RECLAMATION ISSUES AND ESTIMATED COST OF RECLAMATION MARLIN MINE
San Miguel Ixtahuacán and Sipacapa Municipalities San Marcos Department Guatemala 2011
Comisión Pastoral Paz y Ecología Unitarian Universalist ServiceCommittee Diócesis de San Marcos 689 Massachusetts Ave. Casa Diocesana, Oficina 21 Cambridge, MA 02139-3302 10 Avenida, 6-28 Zone 4, San Marcos United States of America San Marcos, Guatemala www.uusc.org www.copaeguatemala.org/
AUTHORS AND CONTRIBUTORS
Keith Campbell, B.S., P.E. Chemical process engineer with 25 years experience in treatment of contaminated groundwater, process water, and industrial wastewater for the mining, oil and gas, chemical process, pharmaceutical, and alternative energy industries.
Ana Lidia González, Lic. Biologist responsible for water quality monitoring around the Marlin mine.Experience in environmental impact studies and biological research.
Steve Laudeman, B.S., M.S., P.E. Geological and civil engineer with 21 years experiencein hazardous materials, waste management, road construction, mines and quarries, and infrastructure for nature reserves.
James Montgomery, E.M. Mining engineer with 40 years experience in minerals exploration, mine design, safety engineering, production and project management for underground mines and nuclear waste disposal.
Nic Remington, B.S., P.E. Civil engineer with 8 years experience investigating soil and structural failures, assessing earthquake damage, designing commercial and educational facilities, and cost estimating.
Robert Robinson, E.M., M.S., M.E.M.P., P.E. Mining and environmental engineer with 40 years experience in mine production and engineering, and the remediation of abandoned and historic mines.
Additional Research: Molly Butler
Translation: Molly Butler Maria J. Van Der Maaten, M.A. H. Alejandro Alfaro Santiz, M.A.
Resumes available on request.
Location map on cover page by Richard Harris.
TABLE OF CONTENTS
Page Introduction 01
Environmental Risks of Mining 03
Reclamation Cost Estimate 09 Reclamation Tasks 12 Costing Methodology 23
Reclamation Plan Requirements 25
Conclusions 29
Works Cited 31
Appendix Reclamation Cost Estimate (not including water treatment) 35
Figures 5 - 8 1. Millsap Tailings near Victor, Colorado 2. Eureka Tailings near Silverton, Colorado 3. American Tunnel Tailings near Gladstone, Colorado 4. Gilt Edge Open Pit near Lead, South Dakota 5. Grand Mogul Mine Discharge near Gladstone, Colorado 6. Kerber Creek Fish Kill near Villa Grove, Colorado 7. Urad Water Treatment Plant and Tailings near Empire, Colorado
Tables 1. Total Estimated Reclamation Cost in Quetzals, Labor Adjusted 09 2. Total Estimated Reclamation Cost, USA Cost Basis 11
Note: This report uses both dollars and quetzals, and metric and English units. The cost estimating software is based on dollars and English units as well as many of the data sources. Information is quoted herein in their original units so the information can be conveniently traced back to its source.
INTRODUCTION
The Marlin mine is owned and operated by Montana Exploradora de Guatemala, S.A. a wholly-owned subsidiary oftransnational Goldcorp Inc. The mine is located in the north of San Marcos Department, and straddles the municipalities of San Miguel Ixtahuacán and Sipacapa.
Montana has provided a $1 million surety bond (Montana Exploradora de Guatemala, S. A., 2010, p. 50) that the government can use to reclaim the mine in the event of a company default. This amount is trivial compared to reclamation bonds required for mining operations elsewhere. For example, reclamation bonds for four mines in Colorado, U.S.A. are:
Cresson: gold, open pit, heap leach, processing plant - $99 million; Climax: molybdenum, underground mine and open pit , processing plant - $52 million; Henderson: molybdenum, underground mine, processing plant- $41 million; and San Luis: gold and silver, open pit, processing plant - $7.4 million (Colorado Division of Reclamation, Mining & Safety, 2010).
Although the reclamation requirements at these four mines are not fully comparable with the Marlin mine, many of the reclamation tasks are similar and the preceding reclamation amounts indicate the magnitude of surety bonds for reclamation at modern mines. Others also have observed that the Marlin bond amount is low(On Common Ground, 2010, p. 16; E-Tech, 2010, p. 8)
The low Marlin surety bond amount exposes the government, local residents, and the environment to significant risks from default by Montana in properly reclaiming the mine. The risks include ongoing pollution from acidic toxic metal effluents, erosion and sedimentation, and disturbed lands that cannot be returned to their prior use. These risks are discussed further in the next section.
The amount estimated in this study for an appropriate surety bond on Marlin is Q389 million or $49 million, obviously a significant increase over the existing bond. This amount provides for indefinite operation of the existing water treatment plant;covering mine waste rock dumped on the surface and tailings from ore processing; contouring disturbed lands to natural and less erosive landforms; control of erosion;removal of buildings, equipment, and waste; and revegetation. If it proves that water retreatment becomes unnecessary, approximately half of the bond amount could be returned to Montana. Similarly, if it can be certified that Montana is properly performing concurrent reclamation, applicable portions of the bond could be returned.
The reclamation cost was estimated with computer software that is widely acceptedand used within the U.S.A.Nevada State regulators and the mining
1 industry in that State jointly prepared the software and unit costs. Where available, input data for the computer software was taken from publicly available Montana and Goldcorp documents. Unfortunately, these documents are lacking in regard to reclamation information, and some input data had to be assumed from the authors’ experience and judgment. If additional data becomes available,input for the computer program can be updated. For example, a Guatemalan professional cost estimator could adjust the unit cost rates used herein to the local rates. The third section of this report describes the reclamation cost estimate and the estimating software. The attached Appendix contains the costing spreadsheets.
The second section of this report summarizes the reclamation risks posed by Marlin. For those readers unfamiliar with reclamation plans, the fourth section describes the content and level of detail generally required.
2 ENVIRONMENTAL RISKSOF MINING
Even though mostmining companies arefairly responsible environmentally, monumental disasters continue to occur. A few examples of recent gold mining disasters include the following:
Baia Mare, Romania: In January 2000, a tailings dam breach released some 100,000 cubic meters of cyanide-rich tailings into the river system. This spill released an estimated 50-100 tons of cyanide, as well as toxic metals, particularly copper, into the Somes and Tisza Rivers, and finally into the Danube River before reaching the Black Sea. Omai, Guyana: The breach of a tailings damin August 1995 released 3.5 million cubic meters of toxic effluent containing cyanide and toxic metals into the Omai and Essequibo rivers. Gilt Edge Mine, USA: After mine closure in 1992, acidic toxic metal effluents seeped into a river from mine waste rock dumps and contaminated water filling three open pits. The owner became insolvent in 1999before cleanup was completed. Subsequently the U.S. Environmental Protection agency financed cleanup. Yanacocha, Peru: The mine has been discharging acidic toxic metal effluents to local rivers, and these rivers have diminished flow from consumption by the mine. The toxic effluents and diminished water flow impact drinking water and agriculture. There also has been a spill of mercury in transit to the mine.
This is a short list of the many recent environmental disasters from gold mining.The US Environmental Protection Agency (1997, p. 1)summarized 62 cases in just eight states from 1990 to 1997 of toxic releases and damages to the environment from mining and ore processing. Forty-nine of these cases involved tailings, ponds, mine wasterock, process solution (e.g., cyanide), wastewater, acid mine drainage, and storm water.
The above examples and document present some of the risks of gold mining, including cyanide spills, breaches and leakage in tailings dams, and acidic toxic metal effluents.These and some other risks are illustrated in Figures 1 – 7.
Figure 1 shows a gulley in tailings that eroded downstream after a breach in the tailings dam. These tailings flooded and sterilized the fields of downstream farmers. The barren valley floor in Figure 2 should be covered with willow bushes and beaver ponds; however, the area is contaminated with toxic tailings that also leach into the adjacent stream killing aquatic life. This contamination occurred more than 100 years ago, and the area has not reclaimed itself. The tailings in Figure 3 are 20 to 80 years old. The tailings never completely dried out, and acidic toxic metal effluents seeped into an
3 adjacent stream during the entire period. At the time the photo was taken, the tailings were being removed to anengineeredlandfill. The open pit in Figure 4 filled with surface and groundwater that became contaminated from leaching sulfides and metals in the mineralized rock remaining in the pit walls. This water contaminated groundwater, which surfaced in nearby streams. Such water also builds up in underground mines and become similarly contaminated. A spring from underground mine water is shown in Figure 5 where the orange water is acidic toxic metal discharge mixing with clean water. Figure 6 shows some of the more than 150,000 fish killed from a sudden release into the stream of tailings similar to those shown in Figure 3. A mine water treatment plant with sludge ponds atop old tailings is shown in Figure 7. Sludge output from the treatment plant is removed to a landfill periodically. The water treatment plant has been operating since the mine closed in the early 1970s, and probably will be required to operate in perpetuity.
The risks of all the preceding environmental calamities exist at the Marlin mine. In addition, there are others not shown in the examples, document, and photos. The soils on the site are easily eroded when stripped of vegetation and disturbed. If surface waters are not carefully controlled and the area not properly re- vegetated, there could be considerable erosion making the lands unfit for use. Downstream, the eroded soils settle out of the water, and become sediments that clog streams and cover adjacent landswhen mobilized by high water. If Montana suddenly abandons the mine, there also will be hazardous chemicals and petroleum products on-site that become vulnerable to release to the environment.
When disasters occur such as those above, it is the government, area residents and the environment that suffer the consequences. The nations ’ taxpayers must finance the cost of cleanup or the local land and people will suffer severe and long-lasting injuries to public health and the environment. Given the poor record of some mining companies in leaving such disasters, authorities should be aggressive in making mining companies meet their responsibilities. This includes requiring the mining company to set aside the full cost of reclamation. The following section provides an estimate of the funds that Montana should provide, in a surety bond, in the event of its default in properly completing reclamation and protecting public health and the environment.
4
Figure 1Millsap Tailings, near Victor, Colorado (U.S.A.)
Figure 2 Eureka Tailings, near Silverton, Colorado (U.S.A.)
5
Figure 3 American Tunnel Tailings, near Gladstone, Colorado (U.S.A.)
Figure 4 Gilt Edge Open Pit, near Lead, South Dakota (U.S.A.)
6
Figure 5 Grand Mogul Discharge, near Gladstone, Colorado (U.S.A.)
Figure 6 Dead Fish Kerber Creek, near Villa Grove, Colorado (U.S.A.)
7
Figure 7 Urad Water Treatment Plant and Tailings, near Empire, Colorado (U.S.A.)
8 RECLAMATION COST ESTIMATE
The estimated total reclamation cost is Q389 million ($49 million, exchange rate Q8.097 = $1.00), which assumes Montana departs fromthe Marlin mine without performing adequate reclamation. This mightoccurif the company abandons the mine, the company goes bankrupt, or the government suddenly ordersthe mine closed. It is the amount the Guatemala government should require from Montana in a surety bond for minereclamation in the event of any of those defaults. If Montana defaults on proper reclamation, the reclamation bond could be used to reclaim the mined lands, protect the local people and environment from long-term injuries, and return the mined lands to their prior use. The existing Marlin reclamation bond is $1 million (Montana Exploradora de Guatemala, S. A., 2010, p. 50).
A breakdown of the estimated total reclamation cost is given in Table 1.
Table 1Total Estimated Reclamation Cost, Labor Adjusted
Reclamation Tasks Labor Equipment Material Total (Q) (Q) (Q) (Q) Water Treatment 2,883,410 20,242,500 73,650,312 96,776,222 Exploration 366,260 5,930,972 774,948 7,072,179 Roads 326,069 5,592,501 243,388 6,161,957 Pit Berms 4,603 36,752 126,977 168,332 Pit Lime 1,236 26,315 749,985 777,536 Pit Dewater 62,766 242,910 1,093,095 1,398,771 Underground Openings 10,514 33,797 37,270 81,582 Underground Lime 1,902 40,485 578,936 621,322 Underground Dewater 34,236 202,425 526,305 762,966 Process Ponds 138,934 1,487,613 42,712 1,669,259 Mine Waste Rock & 2,428,867 45,687,954 347,588 48,464,409 Open Pits Landfill 20,094 309,872 13,473 343,439 Tailings 3,147,584 51,135,373 1,374,328 55,657,285 Foundations & 1,218,871 7,427,038 105,520 8,751,429 Buildings Equipment Removal 163,540 3,396,044 3,559,584 Yards 391,756 5,706,417 460,655 6,558,828 Sediment & Drainage 208,606 622,894 1,551,029 2,382,529 Waste Disposal 53,821 2,763,061 2,816,882 Fences 140,810 249,792 6,153,720 6,544,323 Pipe Removal 329,804 852,614 1,182,418
9 Reclamation Tasks Labor Equipment Material Total (Q) (Q) (Q) (Q) Power Lines & 879,351 879,351 Substation Riprap 6,358,693 18,831,986 596,117 25,786,797 Monitoring 1,092,399 963,090 4,363,919 6,419,407 Construction 2,535,133 10,361,958 60,728 12,957,818 Management Indirect Costs 91,308,590 91,308,590 TOTAL 22,799,259 179,381,302 186,922,654 389,103,215
Note that the largest cost items include:
Surface Water Treatment for indefinite operation of the water treatment plant –Q96,776,222/$11,952,108. Mine Waste Rock & Open Pits, and Tailings are earthmoving costs for regrading the highwalls of the open pits; and contouring, covering, and re- vegetatingall these areas –total Q104,121,694/$12,859,293. Sediment &Drainage, and Riprap for controlling erosion – Q28,169,326/$3,478,983. Demolition and removal of buildings, equipment, power lines, and substation –total Q13,190,364/$1,629,043.
The high cost of water treatment and the earthmoving reflect the highest risk from mining, which is the discharge of toxic effluents. The remaining costs are required to return the lands disturbed by the mine to their prior use, which in this case is agriculture and forestry.
The reclamation cost estimate could be reduced by concurrent reclamation and equipment salvage. Although Montana is performing some concurrent reclamation, the annual monitoring reports do not provide any details.(Montana Exploradora de Guatemala, S. A., 2005 - 2009) Some of the areas Montana may be reclaiming concurrently include exploration disturbances, open pits, and minewaste rock. It is difficult to give a precise cost saving from any concurrent reclamation, as Montana has nopublic reclamation plan, and the annual monitoring reports are vague in regard to reclamation completed to date. Most importantly, an independent or government authority has not certified the reclamation accomplished thus far or the quality of the work.
There may be some salvage value of the mining and processing equipment that could be credited to the reclamation cost. However, no equipment salvage values are included in the cost estimate as it is not possible to anticipate the condition of the equipment when the mine closes.
10 Another possible cost saving is in the water treatment operating cost, if acidic toxic metaleffluents do not develop in the two open pits, underground mine, and mine waste rock.
Portions of the reclamation bond could be returned to Montana as reclamation is completed and certified or shown to be unnecessary.
Because Montana does not have a public reclamation plan or any plans showing the final limits of mining and land disturbance, the above estimated total reclamation cost was in large part based on professional judgment and experience with similar mines. A cost estimate based on detailed plans and maps, actual data, and engineering analyses may result in a much higher cost estimate. All the cost items are vulnerable to an increase, if the costing parameters are underestimated. Some of the reclamation items that could be significantly underestimated in this cost estimate are the adequacy of the existing water treatment plant for future uses, the amount of toxic effluents that develop from the mine workings, mine waste rock, and tailings, the amount of time required to stabilize the tailings, and the work required to control erosion and re- vegetate the disturbed lands.
Montana also plans to process ore from other nearbyprojectsat the Marlin facilities. The impact on reclamation costs of this activity is not included here.
Table 2 summarizes the estimated reclamation costs on a U.S. cost basis. These are the costs that were adjusted for Guatemalan labor rates and currency to arrive at the costs given in Table 1. In Table 1, labor is adjusted to 15.66 percent of U.S.A. labor. This percentage is based on the ratio of Guatemala to U.S. average monthly wages for mining and quarrying obtained from the International Labor Organization at http://laborsta.ilo.org/. The currency conversion rate used is Q8.097 for $1. Guatemala costs for imported equipment and supplies could be higher than estimated. On the other hand, supplies obtained locally could be less than estimated. The Table 1 cost estimate assumes these differences compensate. A skilled local costing engineer could update the estimate with local unit cost rates. Table 2 is provided here for reference and tracking to the detail spreadsheets in the Appendix. The Appendix has another cost summary that breaks down the costs differently.
Table 2 Total Estimated Reclamation Cost, USA Cost Basis
Reclamation Tasks Labor Equipment Material Total ($) ($) ($) ($) Water Treatment 2,274,000 2,500,000 9,096,000 13,870,000 Exploration 288,851 732,490 95,708 1,117,049 Roads 257,154 690,688 30,059 977,901 Pit Berms 3,630 4,539 15,682 23,851
11 Reclamation Tasks Labor Equipment Material Total ($) ($) ($) ($) Pit Lime 975 3,250 92,625 96,850 Pit Dewater 49,500 30,000 135,000 214,500 Underground Openings 8,292 4,174 4,603 17,069 Underground Lime 1,500 5,000 71,500 78,000 Underground Dewater 27,000 25,000 65,000 117,000 Process Ponds 109,570 183,724 5,275 298,569 Mine Waste Rock & 1,915,525 5,642,578 42,928 7,601,031 Open Pits Landfill 15,847 38,270 1,664 55,781 Tailings 2,482,341 6,315,348 169,733 8,967,422 Foundations & 961,262 917,258 13,032 1,891,552 Buildings Equipment Removal 128,976 419,420 548,396 Yards 308,958 704,757 56,892 1,070,607 Sediment & Drainage 164,517 76,929 191,556 433,002 Waste Disposal 42,446 341,245 383,691 Fences 111,050 30,850 760,000 901,900 Pipe Removal 260,100 105,300 365,400 Power Lines & 693,500 693,500 Substation Riprap 5,014,781 2,325,798 73,622 7,414,201 Monitoring 861,520 118,944 538,955 1,519,419 Construction 1,999,332 1,279,728 7,500 3,286,560 Management Indirect Costs 11,276,842 11,276,842 TOTAL 17,980,627 22,154,045 23,085,421 63,220,093
RECLAMATION TASKS
The reclamation proposed in this cost estimate has the objective of minimizing the mining impacts on the local people and environment, and returning the disturbed lands to their prior use to the extent possible, given the current state of reclamation technology. Prior use means returning as much of the land as possible to farming, grazing, and forestry. Insuring that the lands return to these uses may be a lengthy process, perhaps as long as fifteen or more years.To return the disturbed lands to their prior use, all the surface facilities and equipment must be removed. The disturbed lands must be contoured to natural landforms, covered with growth media, and re-vegetated. In addition, surface water must be controlled to prevent erosion and the subsequent down-slope or down-stream damaging effects of sedimentation.
12 The primary environmental risk is the release of acidic toxic metal effluentsfrom the open pits (Marlin and Cochise), underground mine, mine waste rock dumped on the surface, and tailings.Surface and groundwater pass through sulfide mineralization in the mine rock. The water dissolves the metal sulfides and becomes acidic. This process is generally referred to acidic rock drainage (ARD). There are two lines of defense against ARD. The first defense includes various source control measures designed to prevent the formation of ARD. The second line of defense is to collect anyARD,remove toxic constituents in a water treatment plant, and release the clean water to nearby waterways. The toxic sludge removed by the water treatment plant must be sequestered in an engineered landfill on-site. This treatment may be required indefinitely as historically some mines discharge ARD for many decades and centuries after mining ends.
Source control involves blocking ingredients in the chemical reactions that form ARD. In the case of the Marlin mine, this means blocking water and oxygen from contacting the sulfide minerals in the rock left exposed by the mining. These are two of the ingredients necessary to form ARD. The source control measures used in this cost estimate include liming sulfide soils and sulfide rock exposures, compacting soils to minimize water infiltration, and diverting surface water away from those areas. ARD is very difficult to stop once the chemical reactions begin, and so it is likely that any source control measures will be only partially successful.
Tailings are a slurry of finely ground rock, processing chemicals, and process water that are left over after the processing plant has removed the valuable mineralsfrom the ore. The water has the same toxic metals as ARD, plus some processing chemicals. The tailings are contained behind a dam, and fill a small valley. Toxicwater from the tailingscan both overflow the dam during storm events, and continuallyinfiltrate groundwater immediately down gradient from the dam. Below the dam, there are groundwater wells intended to intercept the toxic effluents,and pump the toxic water into a pond. (This pond is referred to as the ‘infiltration pond ’ by Montana .) From this pond, the captured toxic water is pumped back into the tailings.
The second line of defense in preventing release of toxic discharges is to collect anyARDthat gets past the source control measures, collecttoxic water in the tailings and in the groundwater below the tailings dam, and process these discharges in a water treatment plant. Sludge removed from the water must be sequestered in a leak-proof landfill. Montana constructed a water treatment plant for the purpose of processing the tailings to remove toxic constituents. This cost estimate assumes that theexisting water treatment plant is adequate for future needs. The treatment plant may be required to operate indefinitely.
The following subparagraphs describe all of the reclamation tasks that are the basis for the total estimated reclamation costs.The titles of most
13 subparagraphsare the same as in their costing spreadsheets in the Appendix. Some of the cost items are found on multiple spreadsheets or are just one item of several on a particular spreadsheet. For these cost items, the following subparagraphs name the spreadsheet where the cost item(s) are found. One exception is Water Treatment, which is estimated from different sources.
The Appendix spreadsheets are given in the following order:
1. Title page with cost basis information. 2. Table of contents. 3. Cost summary. 4. -26. Detail cost spreadsheets.
Input data for each spreadsheetare color-coded green and blue. Citations for each line of input follow the input tablein numbered notes. Where the references had incomplete information, the authors assumed input from their judgment and experience with mine reclamation. Key assumptions are given in the following subparagraphs.
Water Treatment Q96,776,222/$11,952,108 Marlin has one existing source of toxic discharge and three other possible sources that could develop with time.
The existing source is the tailings, which contain toxic waters. This water is infiltrating the groundwater below the tailings dam(E-Tech, 2010; MEG 2009, p. 61; MARN 2008-2010, D6 samples; Robertson 2009, p. 6,11). Currently, Montana has groundwater wells that are pumping the contaminated water into a pond and then back into the tailings. This groundwater pumpingprobably must be continued indefinitely or until there is no more contamination of the groundwater.The water must be treated to remove the toxic constituents prior to releasing treated water downstream. Otherwise, the contaminated groundwater plume will expand and eventually surface in springs or in downstream waters.Further, toxic water in the tailings requires treatment in order to complete final reclamation of the tailings area. Solids in the tailings are not settling out of the toxic water as expected (Robertson, 2009,p. 6 & 11). In order to dewater the tailings,the tailings must be treated to separate solids from the water. The water is treated to remove toxic constituents and released. The separated solids must be removed to an engineered landfill on-site.Treatment of the groundwater plume and water in the tailings may require many years or decades.
The other three possible sources of toxic dischargesare the Marlin and Cochise open pits, the underground mine, and mine waste rock dumped on the surface. All these facilities contain exposed rock with sulfide minerals that can leach out acidic toxic metaleffluents (also known as acidic rock drainage or ARD). Montana reportsundertakingsource control steps to avoid ARD such as regrading the highwalls of the open pits, placing cemented backfill in the underground mine
14 where ore has been removed, encapsulating any sulfide waste rock deep within neutral waste rock, and placing a soil cover over the mine waste rock. However, these steps are notorious for having limited success. In the cost items below, additional source control steps are provided to further minimize the risk of ARD.If these measures are unsuccessful, the ARD will require treatment,perhaps indefinitely.
This cost item provides for operating the existing water treatment plant indefinitely to treat tailings dam effluents and toxic water contained within the tailings, and possibly ARD.The cost estimating software does not provide for estimating water treatment. In addition, Montana has not made public details of the water treatment plant from which costs could be estimated.
Water treatment operating costs generally range from $1 to $4 per 1000 gallons treated. If a reasonable rate of $1.50 per 1000 gallons is assumed for the Marlin water treatment, the operating costs are:
1. Total Cost to Treat Water in Tailings $4,800,000 given the 20 million cubic meters of tailings (Howell & Christopherson, 2009) and 0.6 water content of tailings. 2. Annual Cost to Treat Groundwater and ARD $394,200 per year assuming the need to treat 500 gallons per minute of contaminated groundwater and ARD. An escrow account earing six percent interest per year would require $6,570,000 to pay this annual operating cost.
If the plant must be operated indefinitely, additional funds must be provided to replace aging equipment. A typical cost for a water treatment plant such as the one at Marlin is around $5 million not including engineering and design costs. Providing half of that amount to replace aging equipment over time would require $2.5 million .The total initial construction cost of $5 million does not need to be provided as much of the original cost includes funds for items that do no need replacement such as site preparation and foundations.
The total amount required for the reclamation bond is $13,870,000, the three preceding amounts in bold text.
Exploration Spreadsheets: Exploration and Exploration Roads & Pads Q7,072,179/$873,432 Montana drilled and continues to drill exploration holes into various mineral deposits to sample for possible ore. This drilling has occurred at Marlin, La Hamaca, and West Vero. Any casing in the holes must be removed. The holes must be plugged for their entire length to prevent cross-linking of any aquifers penetrated by the drill holes, and to prevent injuries to people or livestock from tripping in open holes. The cost estimate provides for plugging the holes with
15 grout.There also are a number of water supply wells and monitoring wells that similarly must be plugged during the final phase of reclamation.
The number of drill holes and their depth were found in various sources; however, there is little information on the length of hole casing and depth to water. This information had to be assumed.
Exploration access roads, drill pads, and sumps must be regraded to natural landforms, covered with growth media, and re-vegetated. No information was found on access roads and drill pads for La Hamaca and West Vero, and this information had to be assumed. The length and width of the access road to the water supply wells was obtained from a map of Marlin(Comision Gubernamental Para Analizar El Fenomeno De Agrietamiento De Paredes En Algunas Casas Adyacentes Al Proyecto Minero Marlin I, 2010). The reclamation cost for access roads within the Marlin project area is included under Roads.
It is possible that Montana has completed some of this reclamation work. However, until the work is certified as properly completed, any reclamation bond should provide for performing the work.
Roads Q6,161,957/$761,017 Roads requiring reclamation include the very wide haul roads from the Marlin and Cochise open pits to the ore crusher and the mine waste rock dump, the airstrip, and other on-site roads. These roads must be regraded to natural landforms, covered with growth media, and re-vegetated.The airstrip is paved with asphalt, and the cost of removing and treating this asphalt is included under Waste Disposal.
Pit Berms Q168,332/$20,789 Berms must be placed around the Marlin and Cochise open pits to discourage vehicle traffic from disturbing the open pit reclamation.
Pit Lime Treatment Q777,536/$96,028 Spreadsheet: Miscellaneous Costs Apply lime to sulfide soilsin the open pits to neutralize any acidic toxic metal leachates that might form. The cost estimate assumes that 10 tons per acre (Skousen & McDonald, 2005)are applied over 65 acres (263,045 square meters). The preceding acreage assumes that much of the pit surface is sulfide rock. This may not be the case, and a careful inventory by an independent professional may result in a lower acreage. In addition, there may be present carbonate rock that will help to neutralize the sulfides.
16 Pit Dewater Q1,398,771/$172,752 Spreadsheets: Miscellaneous Costs Pit slope regrading may leave a depression in the Marlin pit bottom where water can collect, and become contaminated with acidic toxic metal effluents. When this water rises to the lowest point along the depression rim, the water will begin to overflow onto the southern hillside above the Tzal á River. The cost estimate provides for cutting a trench from the pit bottom to the outlying hillside toward the south, installing a culvert with perforated riser pipe on the pit bottom end, and backfilling the trench. This culvert drains any water accumulating in the pit bottom to a lined pond where it is pumped to the water treatment plant.
The cost estimate is based on a pond (included under Sediment and Drainage Control) with a capacity and a pump with a pumping rate adequate to handle a 24-hour 100-year stormevent of 219 millimeters (Robertson, 2009, p. 9) over 65 acres (263,045 square meters). The cost estimate provides for a500 gallons per minute pump, and a pipeline 6,600 feet long with 200 feet of head. This pit dewatering may be required indefinitely. Similar pit dewatering is not includedin the cost estimate for the Cochise open pit as it is open toward a drainage that flows into the tailings.
Underground Openings Q81,582/$10,076 The underground mine has two openings to the surface including a decline ramp and a ventilation shaft. The cost estimate provides for a concrete and rock plug in the decline portal and a concrete cover for the shaft opening.
Underground Mine Water When the mine closes, there is a risk that the underground workings will fill with water that could accumulate acidic toxic metal effluents from the surrounding sulfide rock. Subsequently this toxic water could migrate out into the groundwater and then into surface springs and rivers. Because Montana is backfilling some areas in the mine with cemented mine waste rock, the cement is buffering any acid currently being formed. This buffering may not last in the long term, and the following two cost items are included to minimize the risk of acidic toxic metal discharge.
Underground Lime Treatment Q621,322/$76,735 Spreadsheet: Miscellaneous Costs Lime must be placed in the underground workings to neutralize any formation of acidic toxic metal leachates. The volume of the mine water is estimated at 1.1 million cubic meters, which is the estimated volume of the underground development workings at the planned closure of the mine. This volume does not include the areas where ore will be or has been removed,as Montana is backfilling theseareas with cemented mine waste rock. The amount of lime is estimated based on the mine water having 500 milligrams of sulfate per liter (Montana Exploradora de Guatemala, S.
17 A., 2007, pp. Ann. C, D1)and a lime neutralization efficiency of 0.82 (Skousen, Hilton, & Faulkner, 2010).
Underground Mine Dewater Q762,966/$94,228 Spreadsheet: Miscellaneous Costs In the event that the preceding lime application is inadequate, the cost estimate provides for a drill hole (water well) from the surface to a sump at the lowest pointin the workings to dewater the mine. The drill holemust be equipped with pipe and submersible in-wellpump both acid resistant to remove acidic toxic metal effluents from the mine to the water treatment plant. The assumedrate is 150 gallons per minute with a head of 475 meters. This dewatering and water treatment may be required indefinitely.
Process Ponds Q1,669,259/$206,158 There are three process ponds. The first is for storage of water pumped from the water supply wells, the second is a sediment pond on the south side of the Marlin open pit, and the third is an infiltrationbelow the tailings dam. Montana is planning a second tailings storage facility(Robertson, 2009, p. 4), and the cost estimate provides for reclaiming an additional infiltration pond for the second facility. This spreadsheet does not include any ponds constructed for sediment control and final reclamation, which are included under Sediment& Drainage Control.
Mine Waste Rock &Open Pits Spreadsheet: Waste RockDumps Q48,464,409/$5,985,477 Montana states that the mine waste rock dump now in use is being reclaimed concurrently. However, the annual monitoring reports provide no specific information on this reclamation, and there is no independent certification that the reclamation has been accomplished properly. The cost estimate provides for regrading the mine waste rock dump to a 2.5:1 horizontal to vertical slope, and compacting to minimize the risk of erosion and surface water infiltration. Surface water infiltration could react with sulfide rockin the dump, and produce acidic toxic metal effluents.
There is another mine waste rock dump called area 5. This dump is no longer in use and has been covered. One water sample from this area shows little contamination in effluents from the mine waste rock (Ministero de Ambiente y Recursos Naturales, 2007)
The steep highwalls around the open pits must be regraded to a slope of 2.5:1 horizontal to verticalto minimize erosion of the final pit surfaces, and return the final pit surfaces to their prior use. The regraded areas must be compacted, covered with growth media, and re-vegetated. Slope reduction will reduce the risk of erosion. Compaction will reduce the risk of surface water percolating through the fill to react with sulfide rock. The earthmoving calculations performed in the Waste Rock Dumps spreadsheet are applicable to dozing the pit highwalls
18 from the existing steep slope to the required flatter slope. This estimate assumes that the earthmoving does not require blasting.
Landfill Q343,439/$42,416 Marlin has a solid waste landfill for non-hazardous waste that will require closure and reclamation when the mine closes.Any building materials not salvaged in the demolition of the buildings also must be disposed of in this landfill.
Tailings Q55,657,285/$6,873,815 The existing tailings storage facility is expected to reach full capacity within a year (Robertson, 2009, p. 4), and a second will be required for future tailings. The cost estimate provides for reclaiming the existing tailings and a second storage facility with similar dimensions. This assumption may underestimate the estimated reclamation cost as the new tailings storage facility may have a greater capacity than the existing facility.
The cost estimate is based on covering the tailings first with a compacted 24-inch thick low permeability soil layer. The second layer is a 12-inch thick drainage layer. The third or top layer of the tailings cover is growth media 24 inches thick, which is thicker than the growth media layers used elsewhere on the site. (United States Enviornmental Protection Agency, 1989, p. 9)
It may be many years or decades before the existing tailings storage facility can be finally reclaimed. Solid particles in the tailings are not settling from the water at the rate expected(Robertson, 2009, p. 6 & 11), and the surface may not become solid enough for any work for a long time. Operation of the water treatment plant will facilitate dewatering of the tailings. In addition, a plan is understudy to dewater future tailings by filtration, and alternatively a water cover for the tailings has been suggested. (Robertson, 2009, p. 3)
The existing tailings dam is settling more than expected, approximately three percentto date (Robertson, 2009, p. 13). The cost estimate provides for adding two100-inch lifts(three percent of dam height) on top of the dam to maintain its designed height.
Foundations and Buildings Demolition Q8,751,429/$1,083,232 The cost estimate provides for dismantling all the buildings, slab demolition, and burying the foundations in place. The disturbed areas must be covered and re- vegetated.
Although the municipality or other organizations may want to retain some of the buildings after mining ends, the cost estimate provides for removing all buildings as there is no certainty that any will be retained. There may be some salvage value in the buildings when the mine closes; however, there is no certainty that the buildings will have any value, and some may be unusable if contaminated with process chemicals.
19
Equipment Removal Q3,559,584/$439,618 The processing equipment and storage tanks must be dismantled and removed. Two of the tank volumes had to be assumed for the cost estimate, as the volumes were not found in the Montana documents.
The mining equipment and various vehicles must be removed. The cost estimate provides for removing the equipment for sale in Guatemala City. Any proceeds from the sale could be credited to the surety bond.
Yards Q6,558,828/$810,031 Storage areas, building sites, parking lots, and other yards require ripping (scarifying), growth media cover, and re-vegetation. This cost estimate is adequate to include chemical characterization of any soils contaminated with petroleum products and other contaminates. Petroleum-contaminated soils must be removed to the bioremediation cell.
Sediment and Drainage Control Spreadsheets: Sediment &Drainage Control and Miscellaneous Costs Q2,382,529/$294,248 To minimize erosion and the risk of acidic toxic metal effluents, the cost estimate provides for perimeter ditchesto divert surface water from flowing onto the regraded open pits,mine waste rock dump, and tailings. All these ditches will drain into sediment ponds that settle out sediment carried by the water. The Marlin pit perimeter ditch is in two sections, one around the east end and a second around the west end with a pond at the end of both sections. Although the existing tailings havetwo sediment ponds below the dam, this cost estimate provides for reconstructing both ponds. The existing ponds may not be functional when the mine closes. The sediment ponds periodically will require removal of trapped sediments.
The mine waste rock dump must have parallel contour ditches evenly spacedacross the top and sides to minimize erosion and water infiltration into the waste rock from direct precipitation. In addition, this dump has a very long slope, and surface water must be diverted to the sides to eliminate formation of rills and gullies from erosion. To further minimize water infiltration, these ditches must be concrete lined (see the spreadsheet Miscellaneous Costs for the concrete lining) as recommended by Robertson (2009, p. 15). The spacing between parallel contour ditches is 50 meters horizontal. These ditches will flow into the perimeter ditches described above. Unit costs for the concrete lining were obtained from RSMeans Building Construction Cost Guide (1999, p. Sec. 033 130 4840).
The Marlin pit east sediment pond must be lined. This pond performs double duty in receiving water from the eastern perimeter ditch and water drained through the pit bottom trench (see Pit Dewater). The pond must be lined in the event that waters from the pit bottom develop acidic toxic metal effluents.
20
Waste Disposal Spreadsheets: Waste Disposal and User 1 Q2,816,882/$347,892 Marlin has an asphalt-paved airstrip. The cost estimate provides for removing the asphalt and treating it in a bioremediation cell. This cost item probably is adequate to remove other small areas of hydrocarbon-contaminated soil in the project area.
Marlin has an incinerator for disposal of hazardous chemicals. The cost estimate assumes operating this incinerator for 10 days to incinerate any open containers and bins containing hazardous chemicals. The incinerator has a capacity of 400 pounds per hour (Montana Exploradora de Guatemala, S. A., 2006). The unit costs were obtained from the RSMeans Building ConstructionCost Guide(1999, p. Sec. 111 701 4480). The cost estimate assumes that unopened containers of both hazardous and non-hazardous chemicals can be returned to suppliers at a cost less than their return value.
Fences Spreadsheet: Miscellaneous Costs Q6,544,323/$808,240 The existing fence around the project boundaries must be removed and a new fence installed. The new fence will have a smaller perimeter only enclosing the tailings, water treatment plant, and Marlin pit east sediment pond. The new fence protects these areas from public intrusion until their final closure and reclamation. Final remediation of these facilities is expected to be completed long after the other reclamation work.
Pipe Removal Spreadsheet: Miscellaneous Costs Q1,182,418/$146,031 Overland pipelines that must be removed are the water supply pipeline from the supply wells to the crude water pond, pipelines between the process plant and both the tailings storage facility and water treatment plant, a pipeline from the tailings infiltration pond to the water treatment plant, and a new pipeline provided in this cost estimate from the Marlin pit east sediment pond to the water treatment plant. The lengths of the pipelines to the existing tailings storage facilityare doubled in the cost estimate to remove pipelines to the new tailings storage facility.
The cost of building demolition should be adequate to include any pipe removal in and around the various buildings.
Power Lines and Substation Spreadsheet: Miscellaneous Costs Q879,351/$108,602 The cost estimate includes removal of two power lines and a substation. One power line is high voltage incoming power from the power plant at Tejutla. The second is a lower voltage line to the water supply wells.
21 The estimated cost of building demolition is assumed adequate to include removal of on-site power distribution.
Riprap Spreadsheet: Miscellaneous Costs Q25,786,797/$3,184,735 The cost estimate provides for lining all perimeter diversion ditches and sediment pond spillways with riprap. The riprap will protect the integrity of the ditches and spillways for the long term. Rock on the tailings dam face and spillway is weathering and degrading(Robertson, 2009, p. 5 & 10). The cost estimate also provides for placing riprap on these surfaces. The source of the riprap is assumed offsite. These cost items are not included for the new tailings storage facility as it is assumed thisfacility will be built properly.
Monitoring Q6,419,407/$792,813 The cost estimate provides for monitoring mine waste rock (including area 5), landfills, tailings and tailings dams, re-vegetation, ground and surface water, and any toxic effluents for a period of fifteen years. This task requires the following:
Sampling and analysis of mine waste rock and tailings, and ground and surface water for contaminants. Measuring integrity and stability of mine waste rock dumps, landfills, tailings, and tailings dams with inclinometers and survey monuments. Sampling tailings for density and moisture content. Sampling re-vegetation for density and species richness. Inspection for erosion and sedimentation.
The task includes interpreting and reporting monitoring results to the authorities and interested parties. The cost estimate for this task does not include monitoring for the above water treatment plant as those operating costs include monitoring.
Construction Management Q12,957,818/$1,600,323 The post-mining reclamation period is expected to require a year. After this reclamation, the site supervision required is for monitoring and site maintenance.
Indirect Costs Q91,308,590/$11,276,842 Spreadsheet: Cost Summary The cost estimate automatically adds indirect costs based on the size of the reclamation project. These costs include an item ‘BLM Indirect Cost”. This item is the cost for government agency compliance monitoring of the reclamation, which in this case would go to MEM and MARN.
22 COSTING METHODOLOGY
The estimated reclamation cost was prepared with Excel software developed jointly by the State of Nevada (U.S.A.), other U.S.A. government agencies, and the mining industry(Nevada Division of Environmental Protection, 2010). The software name is Standardized Reclamation Cost Estimator (SRCE), and information regarding the software is available at the web site: http://www.nvbond.org/index.htm
SRCE has the following advantages:
Specific to the mining industry, Acceptable to both government and industry, Up-to-date cost rates, and Readily available at the above web site.
There are other reclamation cost estimating software available including RACER(US Air Force & US Environmental Protection Agency, 2008) and Sherpa(Aventurine Engineering, Inc., 2010). The US Environmental Protection Agency and US Air Force developed RACER for estimating reclamation costs for all types of hazardous materials sites. The software requires detailed input data that is not publicly available for Marlin. Sherpa has an excellent reputation and its author also provides a mine costing data service used widely by the mining industry. In the early 1990s, the US Bureau of Mines published a mine cost estimating guide that includes reclamationand water treatment costs(United States Bureau of Mines).
The specific version of the SRCE software and cost rates used herein is given on the title page of the cost estimate (see Appendix).Dimensional input data for SRCE was extracted from various Montana sources, which are listed in the Works Cited section of this report. Notes following input in the SRCE spreadsheetsindicate the specific reference for the data. Where the Montana information is incomplete, the authors assumed input from their experience and professional judgment.
The cost estimate selects small to medium sized earthmoving equipment instead of the large-scale mining equipment used by Montana. This selection assumes that a local contractor with road-building sized equipment will perform the reclamation, as Montana’s equipment may not be available or operable at the time reclamation is required.
The cost estimate uses US unit cost rates. The total costs are adjusted for local labor rates and converted to Guatemalan quetzals with the conversion factor current at the time of the cost estimate was prepared. For a more accurate cost
23 estimate, a Guatemalan professional cost estimator could adjust the unit cost rates used herein to the local rates.
SRCE does not specifically provide for costing all the reclamation tasks required at Marlin. In particular, there are no spreadsheets for regrading the open pits, treating toxic waters, and operation of the hazardous waste incinerator. For regrading the open pits, it was possible toadapt the Waste Rock Dumpsspreadsheet. For the water treatment and incineration, SRCE was supplemented with professional estimating sources and publications.
There are possible shortcomings in the cost estimate. Much of the input data came from the Marlin Evaluacion de ImpactoAmbiental y Social de Marlin (Montana Exploradora de Guatemala, S. A., 2003). This document is now seven years out of date, and some of the data is incomplete for costing purposes. Similarly, some data was taken from the annual monitoring reports (Montana Exploradora de Guatemala, S. A., 2005 - 2009), which are not as suitable for cost estimating as actual field measurements and detailed engineering plans.The biggest uncertainty is in the cost of future treatment of toxic water in the tailings and possibly acidic toxic metal effluents from the mine workings and mine waste rock dumped on the surface.
Another cost estimate for Marlin reclamation is reported at $13.06 million (On Common Ground, 2010, p. 13). MWH Consulting prepared this cost estimate on behalf of Goldcorp in May 2009. An independent professional review concludes thatthe cost estimate is low, the post closure period short, and there is no surety bond to guarantee the reclamation(On Common Ground, 2010, pp. 12-14). Other experienced professionals in mining risks have observed that the existing $1 million reclamation bond is minimal (E-Tech, 2010). Apart from the preceding review, the MWH cost estimate is not publicly available, and has not stood the test of public scrutiny. Nor has a qualified independent authority analyzed and evaluated the estimate. It would be very useful to review the MWH cost estimate with specific attention to the methods and assumptions used.
24 RECLAMATION PLAN REQUIREMENTS
It has been reported that there is a reclamation plan for the Marlin mine(On Common Ground, 2010, p. 13); however, it is not public. If it is made public, the reclamation tasks and costs can be compared with this estimate to check whether that plan is complete and its cost estimates are acceptable. The authors of that plan presumably had better access to Marlin information. Or, the input data for this cost estimate can be adjusted as appropriate. In doing so, care must be taken to accept only obviously better information, and information that has been independently certified by a recognized authority.
In engineering plans there are several levels of detail including 1) order of magnitude, 2) conceptual, 3) design, and 4) construction. A mine reclamation plan should beat the construction level of detail. This means providing the performance criteria, specifications, constraints, quantities, and engineering drawings in sufficient detail for construction.The currentdisturbances and the planned final disturbancesto the land at Marlin should be shown to a scale larger than 1:200, and these plans should be updated whenever there are changes. The reclamation earthmoving drawings should be on the same scale, and details on those drawings such as ditches, ponds, fences, etc. should be on a scale adequate for construction. For the various buildings and processing facilities, the original construction drawings updated with any subsequent modifications are adequate. It is vital that the reclamation plan have detailed reports on the various natural resources including surface and groundwater, geology and mineralogy, soils, wildlife, and vegetation. These reports must describe the pre- mining state of the resources, how the mine will impact the resources, and mitigation measures required to prevent their degradation. For any possible project effluents, the reports must describe their sources, pathways of release, and all possible environmental and human receptors. The reports must include maps of the resources; sampling and analytical data; population density, and distribution statistics. Most importantly, the mine reclamation plan must include management plans for protecting the resources and mitigatingimpacts of the project.
For an example of the requirements for a mine reclamation plan, see the rules and regulations for Colorado,USA at http://mining.state.co.us/Rules%20and%20Regs.htm
This web site also has the reclamation plans for mines in Colorado. For example, the San Luis gold mine was similar in size to Marlin with daily ore production of 5,000 tons and a life of 10 years. The reclamation plan is about 700 pages long in 17 exhibits and 3 appendices. The file includes another 170 documents on public hearings, reviews, and correspondence on the reclamation plan. Subsequent to filing the original plan, approximately 1790 revisions were filed through the life of the mine. Administration of the reclamation plan by the
25 state is reported in 55 documents on the reclamation bond, 120 inspections, and 471 documents on enforcement.(Colorado Division of Reclamation, Mining & Safety, 2010)
There are a number of international references or starting points from which Guatemala’s regulators could begin to develop a comprehensive mine reclamation program. The World Bank Group has information on mining guidelines, mine closure, and surety bonds. (International Finance Corporation, 2007) (Sasson, 2009) (Sheldon et al, 2002) One of Montana’s engineering contractors, SRK Consulting, published an “Overview of International Mine Closure Guidelines.” (Garcia, 2008)At Marlin, the tailings are one of the primary reclamation issues. The following web sitehas technical information and guidelines on tailings. www.tailings.info/guidelines.htm
A highly respected technical resource is the Canadian program Mine Environment Neutral Drainage, which can be accessed at http://www.nrcan.gc.ca/mms-smm/tect-tech/sat-set/med-ndd-eng.htm.
Guatemala’s regulators should be diligent in insisting on a comprehensive Marlin reclamation plan and should be diligent in enforcing the plan. Goldcorp does not have a very good record of environmental protection at many of its mines as follows:
Alumbrera, Argentina: slurry pipeline spill; transportation release of ammonium nitrate; releases of arsenic, cadmium, copper, mercury, and strontium. Red Lake, Canada: release of tailings into the Bruce Channel of Red Lake that required two-day shutdown of nearby municipal water treatment plant; among highest 12 emitters of arsenic in Canada. Musselwhite, Canada: cyanide release. Equity Silver, Canada: acid rock drainage. La Coipa, Chile: releases of mercury and cyanide. Pueblo Viejo, DominicanRepublic: acidic rock drainage. San Martin, Honduras: reduced water resources; releases of arsenic, cyanide, copper, iron, and lead. Nukay, Mexico: tailings release. Marigold, USA: arsenic contamination of groundwater; releases of mercury. Wharf, USA: releases of cyanide, nitrate, and selenium.(MiningWatch Canada, 2007)
Without vigilance on the part of the government of Guatemala, the San Miguel Ixtahuacán and Sipacapa Municipalities, and the local people, Marlin has the
26 potential to leave a costly legacy, and a source of ongoing environmental impacts for many years to come.
27
CONCLUSIONS
From multiple viewpoints, the existing Marlin reclamation bond of $1 million is a trivial amount. The cost estimate given in this report indicates that the reclamation cost in the event of a Montana default could be as much as Q389 million or $49 million. There is a high risk that contaminated effluents from the site will require water treatment indefinitely (E-Tech, 2010), and the preceding total includes sufficient funds for an escrow account of Q97 million or $12 million to fund the treatment. Reclamation bonds held on other modern mines elsewhere are in the same order of magnitude. An unpublished report prepared for Montana estimates reclamation at $13.06 million. Even so, another mining expert who has reviewed the $13.06 million estimate concludes that it is inadequate(On Common Ground, 2010).
By not requiring an adequate reclamation bond, Guatemala is exposed to high risks of injury to public health and the environment should Montana default on its responsibility to properly reclaim the Marlin mine. Such aMontana default could result from bankruptcy, forced or unplanned shutdown of the mine, and extreme weather or seismic events.
A non-public reclamation plan is equally serious. It raises doubts about the sincerity of the mining company and regulators. Worldwide these documents are required to be public. The public can be a valuable resource in assuring that industrial projects are conducted in an appropriate manner.
The world’s landscape is littered with mines that adversely i mpact public health and the environment. Many of these are historic mines, but irresponsible modern mining companies continue to leave environmental disasters such as the short list given in the section Environmental Risks of Mining. Many of these disasters are monumental as modern mining takes place on a massive scale. Some of these disasters require hundreds of millions or more than a billion dollars of government funds to cleanup, and in spite of these costly cleanups many of the injuries are perpetual.As noted earlier, Goldcorp has a history of environmental problems at many of its mines. Unless comprehensive reclamation requirements are diligently applied, the Marlin Mine also could become a significant environmental disaster. It would serve Goldcorp well to improve its environmental reputation among governments and citizens by carrying out exemplary reclamation at the Marlin mine.
29
WORKS CITED
Aventurine Engineering, Inc. (2010). Accessed 28-Sept. 2010at Sherpa: www.aventurineengineering.com/index.html
Colorado Division of Reclamation, Mining & Safety. (2010). Retrieved 3-Oct. 2010 from http://mining.state.co.us/operatordb/criteria.asp?search=minename
Comision Gubernamental Para Analizar El Fenomeno De Agrietamiento De Paredes En Algunas Casas Adyacentes Al Proyecto Minero Marlin I. (2010). Informe final No. GI-001-2010 An. D 100115 CONJUNTO MARLIN(1), Guatemala City.
E-Tech International (2010). Evaluation of predicted and actual water quality coditions at the Marlin Mine, Guatemala.
Garcia, D. H. (2008). Overview of International Mine Closure Guidelines. 2008 Meeting of American Institute of Professional Geologists, Flagstaff, Arizona, 20- 24 Sept.2008.
Goldcorp Inc. (2010). Marlin Drill Hole Data. Vacouver: Accessed 16-July 2010 at www.goldcorp.com/operations/marlin/reports .
Howell, C., & Christopherson, D. (2009). Three-phase mining effluent treatment plant to meet stringent standards. Enginering and Mining Journal , April 2009, p. 48.
International Finance Corporation. (2007). Environmental, Health, and Safety Guidelines MINING. World Bank Group, Washington, D. C., 10-Dec. 2007.
Kuyucak, N. Lime neutralization treatment plant cost estimate. Golder Associates Ltd., Ontario.
Nevada Division of Environmental Protection. (2010). Standardized reclamation cost estimator. Bureau of Mining Regulation and Reclamation. Reno: Retrieved 1-July 2010 from http:www.nvbond.org/index.htm.
MiningWatch Canada. (2007). Goldcorp Analysis. Retrieved 1-Oct. 2010 from www.miningwatch.ca
Ministero de Ambiente y Recursos Naturales. (2007-2010). Informe de inspeccion Minera Marlin 1. Guatemala City.
31 Montana Exploradora de Guatemala, S. A. (2003). Estudio de evaluacion de impacto ambiental y social projecto minero Marlin. Guatemala City.
Montana Exploradora de Guatemala, S. A. (2006). Estudio de evaluacion de impacto ambiental del proyecto La Hamaca. Guatemala City.
Montana Exploradora de Guatemala, S. A. (2007). Annual Monitoring Report 2006. Guatemala City.
Montana Exploradora de Guatemala, S. A. (2008). Annual Monitoring Report 2007. Guatemala City.
Montana Exploradora de Guatemala, S. A. (2010). Annual Monitoring Report 2009. Guatemala City.
On Common Ground. (2010). Human Rights Assessement Appendix H External Environmental Review. Vancouver: Goldcorp, Inc.
Robertson, A. M. (2009). Dam inspection - November 2009. 2009 Annual Monitoring Report, Appendix E,Guatemala City: Montana Exploradora de Guatemala, S. A.
RSMeans Company, Inc. (1999). Building Construction Cost Data. Kingston, MA: RSMeans Company, Inc.
Sasson, M. (2009). Guidelines forthe Implementation of Financial Surety for Mine Closure. World Bank, Oil, Gas, and Mining Policy Division, Extractive Industries for Development Series #7, Washington, D. C., June 2009.
Sheldon, C. G., J. E. Strongman, M. Weber-Fahr, N. Mekharat, M. Tall. (2002). Global Mining It’s Not Over When It’s Over: Mine Closure Around the World. World Bank Group’s Mining Department, Washington, D. C., 2002.
Skousen, J., & McDonald, L. (2005). Land Feclamation. Accessed 5-Sept. 2010at http://anr.est.wvu.edu/land_reclamation/revegetation
Skousen, J., Hilton, H., & Faulkner, B. (2010). Overview of acid mine drainage treatment with chemicals. Accessed 1-Sept. 2010 at http://anr.ext.wvu.edu/land_reclamation/chemical_treatment. Morgantown, WV, USA.
United States Air Force & US Environmental Protection Agency. (2008). Federal Remediation Technologies Roundtable . Retrieved 28-Sept. 2010 from www.frtr.gov/ec2/ecracersystm.htm
32 United States Bureau of Mines. Bureau of Mines Cost Estimating System Handbook. Washington, D.C.: United States Department of the Interior, Information Circular 9142-9143.
United States Enviornmental Protection Agency. (1989). Technical Guidance Document: Final Covers on Hazardous Waste Landfills and Surface Impoundments. Washington, D.C.: EPA/530-SW-89-047.
United States Environmental Protection Agency. (1997). Damage cases and environmental releases from mines and mineral processing sites. Washington, D.C.
33
RECLAMATION ISSUES
At the
Marlin Mine
APPENDIX
RECLAMATION COST ESTIM
35
37 STANDARDIZED RECLAMATION COST ESTIMATOR
Version 1.1.2 (updated 03 February, 2008) NOT APPROVED FOR USE IN NEVADA COST DATA FILE INFORMATION File Name: Marlin Rec Cst 2010 12 01.xls
Cost Data File: cost_data-std-nv2009-1.xls
Cost Data Date: August 1, 2009
Cost Data Basis: Standardized Data
Author/Source: Nevada Division of Environmental Protection (NDEP) & NV BLM
PROJECT INFORMATION Project Name: Marlin
Date of Submittal: 1 July 2010
Select One: NoticeNotice oror SmSm ExplorationExploration PlanPlan LgLg ExplorationExploration PlanPlan MineMine PlanPlan ofof OperationsOperations
Select One: PrivatePrivate LandLand PublicPublic oror Public/PrivatePublic/Private
Cost Basis Category: NorthernNorthern NevadaNevada
Cost Basis Description: Churchill, Douglas, Elko, Eureka, Humboldt, Lander, Lyon, Mineral, Pershing, Storey, Washoe, and White Pine Counties
This version has been validated and verified by the NDEP and BLM for use in Nevada as of 04 February 2008.
Copyright © 2004-2008 - SRCE Software. All Rights Reserved. Page 1 of 1 Project Name: Marlin Project Date: 1 July 2010 Marlin Rec Cst 2010 12 01.xls Reclamation Plan
Table of Contents
Cost Summary Exploration Exploration Roads & Pads Waste Rock Dumps Heap Leach Pads Tailings Roads Pits Underground Openings Foundations and Buildings Other Demo & Equipment Removal Sediment & Drainage Control Process Ponds Landfills Yards, Etc. Waste Disposal Misc. Costs Monitoring Construction Management Labor Costs Equipment Costs Material Costs Misc. Unit Costs Fleets (Crews) Productivity Seed Mixture #
Page 1 of 1 NEVADA STANDARDIZED RECLAMATION BOND CALCULATION - SUMMARY Project Name: Marlin Project Date: 1 July 2010 Model Version: Version 1.1.2 (updated 03 February, 2008) File Name: Marlin Rec Cst 2010 12 01.xls
A. Earthwork/Recontouring Labor (1) Equipment (2) Materials Total Exploration $270,101 $689,665 $92,558 $1,052,324 Exploration Roads & Drill Pads $18,307 $42,445 $0 $60,752 Roads $252,926 $687,057 $0 $939,983 Well Abandonment* $0 $0 $0 $0 Pits $1,424 $2,645 N/A $4,069 Underground Openings $8,292 $4,174 $4,603 $17,068 Process Ponds $108,790 $183,054 $0 $291,844 Heaps $0 $0 $0 $0 Waste Rock Dumps $1,909,488 $5,637,391 $0 $7,546,879 Landfills $15,613 $38,069 $0 $53,682 Tailings $2,458,465 $6,294,839 $0 $8,753,304 Foundation & Buildings Areas $85,419 $204,651 $0 $290,070 Yards, Etc. $300,955 $697,883 $0 $998,838 Drainage & Sediment Control $63,255 $73,484 $15,246 $151,985 Other** $0
Subtotal $5,493,035 $14,555,357 $112,407 $20,160,798 Mob/Demob* $0 Subtotal "A" $5,493,035 $14,555,357 $112,407 $20,160,798
B. Revegetation/Stabilization Labor (1) Equipment (2) Materials Total Exploration $0 $0 $0 $0 Exploration Roads & Drill Pads $443 $380 $3,150 $3,973 Roads $4,228 $3,631 $30,059 $37,918 Well Abandonment N/A Pits $2,206 $1,894 $15,682 $19,782 Underground Openings N/A Process Ponds $780 $670 $5,275 $6,725 Heaps $0 Waste Rock Dumps $6,037 $5,187 $42,928 $54,152 Landfills $234 $201 $1,664 $2,099 Tailings $23,876 $20,509 $169,733 $214,118 Foundation & Buildings Areas $2,870 $2,466 $13,032 $18,368 Yards, Etc. $8,003 $6,874 $56,892 $71,769 Drainage & Sediment Control $2,862 $2,461 $19,854 $25,177 Other** $0 Subtotal "B" $51,539 $44,273 $358,269 $454,081
C. Detoxification/Water Treatment/Disposal of Wastes** Labor (1) Equipment (2) Materials Total Process Ponds/Sludge* $0 Heaps* $0 Dumps (Waste & Landfill)* $0 Tailings* $0 Surplus Water Disposal* $0 Monitoring* $0 Miscellaneous* $0 Solid Waste - On Site $0 $0 N/A $0 Solid Waste - Off Site $0 Hazardous Materials $0 Hydrocarbon Contaminated Soils $9,196 $0 $91,245 $100,441 Other** Hazmat Incinerator $33,250 $0 $250,000 $283,250 Subtotal "C" $42,446 $0 $341,245 $383,691
D. Structure, Equipment and Facility Removal Labor (1) Equipment (2) Materials Total Foundation & Buildings Areas $872,973 $710,141 $0 $1,583,114 Other Demolition $4,500 $4,500 $0 $9,000 Equipment Removal $124,476 $414,920 $0 $539,396 Fence Removal $20,850 $8,450 $29,300 Fence Installation $90,200 $22,400 $760,000 $872,600 Pipe & Culvert Removal $260,100 $105,300 $365,400 Powerline Removal $635,000 $635,000 Transformer Removal $58,500 $58,500 Rip-rap, rock lining, gabions $5,014,781 $2,325,798 $73,622 $7,414,201 Other Misc. Costs $177,375 $64,234 $520,581 $762,190 Other** $0 Subtotal "D" $7,258,755 $3,655,743 $1,354,203 $12,268,701
E. Monitoring Labor (1) Equipment (2) Materials Total Reclamation Monitoring and Maintenance $594,234 $50,218 $172,355 $816,807 Ground and Surface Water Monitoring $267,286 $68,726 $366,600 $702,612 Subtotal "E" $861,520 $118,944 $538,955 $1,519,419
F. Construction Management & Support Labor Equipment (2) Materials Total Construction Management $1,775,232 $499,392 N/A $2,274,624 Construction Support $0 $356,609 $0 $356,609 Road Maintenance $224,100 $423,727 $7,500 $655,327 Other** $0 Subtotal "F" $1,999,332 $1,279,728 $7,500 $3,286,560
G. Operational & Maintenance Costs Labor (1) Equipment (2) Materials (3) Total Subtotal A through F $15,706,627 $19,654,045 $2,712,579 $38,073,250
* Costs estimated outside of standardized model - additional documentation required. ** Other Operator supplied costs - additional documentation required.
Marlin Rec Cst 2010 12 01.xls Page 1 of 2 1/17/2011 NEVADA STANDARDIZED RECLAMATION BOND CALCULATION - SUMMARY Project Name: Marlin Project Date: 1 July 2010 Model Version: Version 1.1.2 (updated 03 February, 2008) File Name: Marlin Rec Cst 2010 12 01.xls
Indirect Costs Include? Total 1. Engineering, Design and Construction (ED&C) Plan (7) $1,522,930 2. Contingency (8) $2,284,395 3. Insurance (9) $235,599 $235,599 4. Performance Bond (10) $1,142,198 5. Contractor Profit (11) $3,807,325 6. Contract Administration (12) $2,284,395 7. BLM Indirect Cost (13) N/A Subtotal Add-On Costs $11,276,842
Grand Total $49,350,092
Administrative Cost Rates (%) Cost Ranges for Indirect Cost Percentages <= <= <= > 1. Engineering, Design and Construction (ED&C) Plan (7) $1,000,000 $25,000,000 $25,000,000 Notice Level Variable Rate 8% 6% 4% 0% <= <= <= > 2. Contingency (8) $500,000 $5,000,000 $50,000,000 $50,000,000 Notice Level Variable Rate 10% 8% 6% 4% 0% 3. Insurance (9) 1.5% of labor costs 4. Bond (10) 3.0% of the O&M costs if O&M costs are >$100,000 5. Contractor Profit (11) 10% of the O&M costs <= <= <= > 6. Contract Administration (12) $1,000,000 $25,000,000 $25,000,000 Variable Rate 10% 8% 6% 7. BLM Indirect Cost (13) 21% of Contract Administration
RECLAMATION COST ESTIMATION SUMMARY SHEET FOOTNOTES 1. Federal construction contracts require Davis-Bacon wage rates for contracts over $2,000. Wage rate estimates may include base pay, payroll loading, overhead and profit. To avoid double counting of any of the identified administrative costs the operator must itemize the components of their labor cost estimates or provide BLM with a signed statement, under penalty of USC 1001, that identifies what specific administrative costs are included in the quoted hourly rate.
2. The reclamation cost estimate must include the estimated plugging cost of at least one drill hole for each active drill rig in the project area. Where the submitted Notice or approved Plan of Operations calls for drill holes to be plugged, but doesn’t specifically require the drill holes be plugged before the drill rig has been move d from the drill pad, the reclamation cost estimate must include the plugging cost for those drill holes. For all drill holes and wells scheduled to be left open, the estimated plugging cost must be included in the reclamation cost estimate. Where the approved Plan of Operations proposes immediate mining through an area where the drilling is to occur, and the cost of the post-mining reclamation is included in the reclamation cost estimate, the cost estimate does not need to include the plugging costs for those drill holes. 3. Miscellaneous items should be itemized on accompanying worksheets. 4. Fluid management should be calculated only when mineral processing activities are involved. Fluid management represents the costs of maintaining proper flui d management to prevent overflow of solution ponds through premature cessation or abandonment of operations. Calculate a minimum six month direct cost estimate which includes power, supplies, equipment, labor and maintenance. 5. Handling of hazardous materials includes the cost of decontaminating, neutralizing, disposing, treating and/or isolating all hazardous materials used, produced, or stored on the site. 6. Any mitigation measures required in the Plan of Operations must be included in the reclamation cost estimate. Mitigation may include measures to avoid, minimize, rectify and reduce or eliminate the impact, or compensate for the impact. 7. Engineering, design and construction (ED&C) plans are often necessary to provide details on the reclamation needed to contract for the required work. To estimate the cost to develop an ED&C plan use 4-8% of the O&M cost. Calculate the ED&C cost as a percentage of the O&M cost as follows: up to and including $1 million, use 8%; over $1 million to $25 million, use 6%; and over $25 million, use 4%. Inclusion of a line item for the development of an ED&C plan may not be necessary for small operations, such as notice-level exploration. With small, uncomplicated reclamation efforts contracting may be able to proceed without developing an ED&C plan. [ED&C is automatically eliminated if "Notice" is selected on the Property Information Sheet]
8. A contingency cost is included in the reclamation cost estimation to cover unforeseen cost elements. Calculate the contingency cost as a percentage of the O&M cost as follows: up to and including $500,000, use 10%; over $500,000 to $5 million, use 8%; over $5 million to $50 million, use 6%; and greater than $50 million, use 4%. As with the ED&C cost, inclusion of a contingency cost may not be necessary for small operations, such as notice-level exploration.
9. Insurance premiums are calculated at 1.5% of the total labor costs. Enter the premium amount if liability insurance is not included in the itemized unit costs.
10. Federal construction contracts exceeding $100,000 require both a performance and a payment bond (Miller Act, 40 USC 270et seq.). Each bond premium is figured at 1.5% of the O&M cost. Enter the sum of both premium costs on this line. 11. For Federal construction contracts, use 10% of estimated O&M cost for the contractor’s profit. 12. To estimate the contract administration cost, use 6 to 10% of the operational and maintenance (O&M) cost. Calculate the contract administration cost as a percentage of the O&M cost as follows: up to and including $1 million, use 10%; over $1 million to $25 million, use 8%; and greater than $25 million use 6%.
13. BLM’s indirect cost rate is 21% of BLM’s contract administration costs.
Marlin Rec Cst 2010 12 01.xls Page 2 of 2 1/17/2011 Bond Calculation Project Name: Marlin - Reclamation Plan Exploration Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls
Exploration - Cost Summary Labor Equipment Materials Totals Hole Abandonment Costs $270,101 $689,665 $92,558 $1,052,324 Trench Backfilling Costs $0 Subtotal Earthworks $270,101 $689,665 $92,558 $1,052,324 Trench Revegetation Costs $0 Subtotal Revegetation $0 $0 $0 $0 TOTALS $270,101 $689,665 $92,558 $1,052,324
Color Code Key User Input - Direct Input Direct Input Exploration hole surface seal thickness: 20.0 ft < In Nevada use 10' User Input - Pull Down List Pull Down Selection Minimum seal above groundwater table: 50.0 ft < In Nevada use 50' Program Constant (can override) Alternate Inpu t Program Calculated Value Locked Cell - Formula or Reference
Exploration Drillhole Abandonment - User Input Hole Plugging Total Max Holes Average Hole Number Open at One Casing to Depth of Depth to Plug Description Hole Type Diameter of Holes Time Remove Hole (1) Water Method -1 (select) in ft ft bgs ft bgs (select) 1 Marlin Exploration Drill Holes, 2 Core 2.98 610 610 30 690 20 Grout + Backfill 2 La Hamaca Exploration Drill Holes, 3 Core 2.98 31 31 30 850 20 Grout + Backfill 3 West Vero Exploration Drill Holes, 2 Core 3.98 38 38 30 1,317 20 Grout + Backfill 4 Water Supply Well PSA-1, 4 Rotary 12.25 1 1 1110 1,115 750 Grout + Backfill 5 Water Supply Well PSA-2, 4 Rotary 12.25 1 1 950 960 246 Grout + Backfill 6 PW Monitoring Wells, 5 Rotary 9 5 5 300 310 280 Grout + Backfill 7 MW Monitoring Wells, 5 Rotary 9 7 7 460 820 480 Grout + Backfill
Notes: 1. If core holes are pre-drilled, use length of hole below pre-drilled length 2. Goldcorp 2010 3. MEG 200 6 4. MEG 2010 p. 5 9 5. MEG 2010 Att. D and MEG 2008 Fig. 8
Exploration Trenches - User Input
Trench Parameters Backfill Revegetation Trench Trench Additional Cut Description Trench Trench Bottom Sideslope Hrs Backfill Material Backfilling (required) Length Depth Width Angle for Walk-in (1) Material Type Fleet Seed Mix Mulch Fertilizer -1 ft ft ft degrees (select) (select) (select) (select) (select) (select) 1
1. Include one-way hours necessary to walk equipment in from drop-off point to work area
Exploration Drillhole Abandonment
Total Casing Casing Hole Total Total Total Drillhole Removal Removal Plugging Plugging Plugging Top Seal Vol/foot of Plugging Grout Cuttings Top Seal Abandon. Labor Equipment Labor Equipment Material Material Total Description depth Material (1) Volume (2) Volume Volume (3,4) Hours (6,7) Cost (5) Cost Cost Cost Cost Cost (2,3) Cost (6,7) ft3 cy cy cy hrs $ $ $ $ $ $ $ 1 Marlin Exploration Drill Holes, 2 0.05 Grout 1.57 0.02 2.9 $30,998 $79,149 $193,736 $494,680 $62,825 $3,563 $864,951 2 La Hamaca Exploration Drill Holes, 3 0.05 Grout 1.94 0.02 2.9 $1,575 $4,022 $9,846 $25,139 $3,945 $181 $44,708 3 West Vero Exploration Drill Holes, 2 0.09 Grout 5.44 0.04 2.9 $1,931 $4,931 $12,069 $30,816 $13,561 $444 $63,752
1/17/2011 Copyright © 2004-2008 - SRCE Software. All Rights Reserved. Page 1 of 3 Exploration Bond Calculation Project Name: Marlin - Reclamation Plan Exploration Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls 4 Water Supply Well PSA-1, 4 0.82 Grout + Cutting s 15.75 20.96 0.38 25.9 $1,766 $4,509 $1,334 $3,406 $1,033 $111 $12,159 5 Water Supply Well PSA-2, 4 0.82 Grout + Cutting s 29.00 5.65 0.38 22.0 $1,512 $3,860 $1,092 $2,790 $1,902 $111 $11,267 6 PW Monitoring Wells, 5 0.44 Grout + Cutting s 1.63 3.59 0.20 8.8 $2,414 $6,163 $2,223 $5,677 $535 $292 $17,304 7 MW Monitoring Wells, 5 0.44 Grout + Cutting s 7.94 6.84 0.20 12.3 $5,158 $13,170 $4,447 $11,353 $3,646 $409 $38,183 63.27 37.04 1.24 77.7 $45,354 $115,804 $224,747 $573,861 $87,447 $5,111 $1,052,324 Notes:
1. Assumes grout backfill from bottom of hole to 50' (15.24m) above static water level, up to distance from top of hole as set above. 2. Assumes 25% loss to formation for grout backfill 3. If "Top Plug" hole plug method is used, assumes physical plug installed without backfill, grout or cement. Not available option for Nevada projects 4. Assumes top 10' (3 m) of hole is plugged with cement if "Grout Only", "Backfill + Grout", or "Cement Plug" hole plug method are chosen. 5. Assumes that a) casing is not cemented entire length, b) does not include temporary surface casing 6. Assumes minimum 1 hr per hole for abandonment (excluding move-to and casing removal) 7. Assumes fixed hours per hole for setup & tear-down and moving between holes (see Productivty Sheet) per drill hole (includes rig time if grouting required, labor crew only if cuttings backfill only)
Exploration Trenches - Calculations
Exploration Trench Volume Calculation Dozing & Ripping/Scarifying Calculations
Dozing: Dozing distance = 1/2 trench length or 400 ft (max push) whichever is less Assumes flat push (grade correction factor = 1)
Revegetation: 10 ft (3 m) added to trench width to account for revegetation under spoil pile
a # b ! d 2
Exploration Trenches - Backfill/Regrading Costs Productivity = Dozer Productivity x Grade Correction x Density Correction x Operator (0.75) x Material x Visibility x Job Efficiency (0.83)
Trench Dozer Corrected Total Trench Backfill Trench Backfill Total Description Backfill Push Equipment Dozing Density Backfilling Hourly Dozer Labor Equipment Trench Backfill (required) Volume Distance Productivity Material Correction Fleet Productivity Hours Cost Cost Cost LCY (BCY+30%) ft yd3/hr yd3/hr hr $ $ $ 1
Exploration Trenches - Revegetation Costs
Revegetation Revegetation Revgetation Total Description Surface Labor Equipment Material Revegetation (required) Area Cost Cost Cost Cost
1/17/2011 Copyright © 2004-2008 - SRCE Software. All Rights Reserved. Page 2 of 3 Exploration Bond Calculation Project Name: Marlin - Reclamation Plan Exploration Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls acres $ $ $ $ 1
1/17/2011 Copyright © 2004-2008 - SRCE Software. All Rights Reserved. Page 3 of 3 Exploration Bond Calculation Expl. Roads & Pads Project Name: Marlin - Reclamation Plan Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls Exploration Roads & Pads - Cost Summary Labor Equipment Materials Totals Grading Costs $2,020 $2,066 N/A $4,086 Cover Placement Cost $15,664 $40,043 N/A $55,707 Ripping Cos t $623 $336 N/ A $959 Subtotal Earthworks $18,307 $42,445 $60,752 Revegetation Cos t $443 $380 $3,150 $3,973 TOTALS $18,750 $42,82 5 $3,150 $64,72 5
Color Code Ke y User Input - Direct Input Direct Input Maximum grade allowed for dozer: 10.0 % < In Nevada use 10 ' User Input - Pull Down List Pull Down Selection Maximum grade allowed for grader: 10.0 % < In Nevada use 30 ' Program Constant (can override) Alternate Inpu t Original slope cutoff to include extra sump volume: 30.0 % Program Calculated Valu e Locked Cell - Formula or Referenc e
Exploration Roads & Pads - User Input You must fill in ALL green cells and relevant blue cells in this section for each road (1) Facility Description Physical User Overrides Growth Media Regrade Underlying Road + Number Individual Drill Drill Slope Volume Disturbed Area Growth Distance to Slope from Description Ground Ungraded Cut Drill Pad Road of Drill Sump Pad Pad Replacement (if calculated (if calculated Media Growth Media Road to (required) ID Code Slope Slope Slope Length Width Pads Volume Width Length Percent elsewhere) elsewhere) Thickness Stockpile Stockpile -1 % grade _ H:1V degrees ft ft cy ft ft % c y acres in ft % grade 1 La Hamaca 20.0 1.3 45 10,000 12 31 20 33 30 12 30,000 -6 2 Water Supply Well Access & Pad, 3 20.0 1.3 45 4,000 12 2 20 10 30 12 34,000 -6 3
1. All Physical parameters must be input even if manual overrides for volume or area are used. 2. Sump volume will be applied to all roads on slopes less than show above. On slopes great than shown above pad width (i.e. cut volume) should be adequate to account for sump volume. 3. Comision 2010
Exploration Roads & Pads - User Input (cont.) You must fill in ALL green cells and relevant blue cells in this section for each road
Grading Cover Revegetation Cover Additional Placement Additional Description Regrade Cut Material Recontouring Hrs Cover Equipment Hrs Scarifying/ (required) Material Type Equipment Fleet for Walk-in (1) Material Type Fleet for Walk-in (1) Seed Mix Mulch Fertilizer Ripping? Ripping Fleet (select) (select) (select) (select) (select) (select) (select) (select) (select) (select) (select) (select) 1 La Hamaca 1 Alluvium Sm Excavator 1 Alluvium Small Truck 1 Mix 1 Straw Mulch Chemical Yes Small Dozer 2 Water Supply Well Access & Pad, 3 1 Alluvium Sm Excavator 0 Alluvium Small Truck 0 Mix 1 Straw Mulch Chemical Yes Small Dozer 3
1. Include one-wa y hours necessary to walk equipment in from drop-off point to work are a
Exploration Roads & Pads - Calculations
Regrading Volume and Footprint Volume
Figure 1 - Regrading Volume Calculation
Will not allow dozer for slopes greater than 30% For dozer regrading push distance = road widt h
1/17/2011 Copyright © 2004-2008 - SRCE Software. All Rights Reserved. Page 1 of 3 Expl. Roads & Pads Bond Calculation Expl. Roads & Pads Project Name: Marlin - Reclamation Plan Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls Assumes dozer push is uphill Assumes minimum push distance of 100 ft
Ripping/Scarifying Calculations
Minimum 1 hr ripping/scarifying time per area Number of passes = Final slope length ÷ Grader width Travel distance = Number of passes x Road length Total hours = (Travel distance ÷ Grader productivity) + (Number of passes x Grader maneuver time) For dozer regrading assumes push distance = 3 x road width
Revegetation Calculations
Minimum of 1 acre crew time per area
Inputting Exploration Roads and Drill Pads
Exploration Roads & Pads - Regrading Costs
Total Total Total Total Total Total Description Road Drill Pad Regrading Recontouring Equipment Equipment Labor Equipment Regrading (required) Length Length Volume Fleet Productivity Hours (1) Cost Cost Cost ft ft c y cy/h r hr $ $ $ 1 La Hamaca 9,070 930 3,676 Sm Excavator 139 28.4 $1,682 $1,721 $3,403 2 Water Supply Well Access & Pad, 3 3,940 60 796 Sm Excavator 139 5.7 $338 $345 $683 3 13,010 990 4,472 34.1 $2,020 $2,066 $4,086
1/17/2011 Copyright © 2004-2008 - SRCE Software. All Rights Reserved. Page 2 of 3 Expl. Roads & Pads Bond Calculation Expl. Roads & Pads Project Name: Marlin - Reclamation Plan Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls (1) Includes walk-in time based on distance and travel speed (see Productivity sheet for speeds)
Exploration Roads & Pads - Growth Media Costs
Growth Total Growth Media Number of Total Total Total Growth Description Media Replacement Fleet Trucks/ Fleet Labor Equipment Media (required) Volume Fleet Productivity Scrapers Hours Cost Cost Cost cy LCY/hr $ $ $ 0 1 La Hamaca 6,891 Small Truck 576 16 14.0 $11,834 $30,248 $42,082 2 Water Supply Well Access & Pad, 3 2,364 Small Truck 544 17 4.3 $3,830 $9,795 $13,625 3
9,255 18.3 $15,66 4 $40,043 $55,707
Exploration Roads & Pads - Scarifying/Revegetation Costs
Ripping Ripping Total Revegetation Revegetation Revgetation Total Description Surface Ripping Equipment Labor Ripping Labor Equipment Material Revegetation (required) Area Hours Cost Costs Costs Cost Cost Cost Cost acres hrs $ $$$$$$ 1 La Hamaca 4.23 4.3 $462 $249 $711 $330 $283 $2,346 $2,959 2 Water Supply Well Access & Pad, 3 1.45 1.5 $161 $87 $248 $113 $97 $804 $1,014 3 5.68 5.8 $623 $336 $959 $443 $380 $3,150 $3,973
1/17/2011 Copyright © 2004-2008 - SRCE Software. All Rights Reserved. Page 3 of 3 Expl. Roads & Pads Bond Calculation
Project Name: Marlin - Reclamation Plan Roads Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls Roads - Cost Summary Labor Equipment Materials Totals Grading Costs $116,694 $354,032 N/A $470,726 Cover Placement Cost $129,416 $330,779 N/A $460,195 Ripping Cos t $6,816 $2,246 N/ A $9,062 Subtotal Earthworks $252,92 6 $687,057 $939,98 3 Revegetation Cos t $4,228 $3,631 $30,059 $37,918 TOTAL S $257,154 $690,688 $30,059 $977,901
Color Code Ke y User Input - Direct Input Direct Input Maximum grade allowed for dozer: 30.0 % < In Nevada use 10' User Input - Pull Down List Pull Down Selection Maximum grade allowed for grader: 10.0 % < In Nevada use 30' Program Constant (can override) Alternate Inpu t Program Calculated Value Locked Cell - Formula or Reference
Roads - User Input You must fill in ALL green cells and relevant blue cells in this section for each road (1) Facility Description Physical User Overrides Growth Media Underlying Slope Regrade Volume Disturbed Area Growth Distance to Slope from Description Ground Ungraded Replacement (if calculated (if calculated Media Growth Media Road to (required) ID Code Slope Slope Cut Slope Road Width Road Length Percent elsewhere) elsewhere) Thickness Stockpile Stockpile -1 % grade _ H:1V degrees ft ft % c y acres in ft % grade 1 Mine Access Roads, 2 30.0 1.3 60.0 33 4,921 100% 12 30,000 -6 2 Air Strip, 3 30.0 1.3 60.0 146 2,600 100% 12 30,000 -6 3 Overburden Haul Road, 3 30.0 1.3 60.0 80 7,200 100% 12 30,000 -6 4 Ore Haul Road, 3 20.0 1.3 60.0 80 4,480 100% 12 30,000 -6 5 Coches Haul Road, 3 20.0 1. 3 60.0 80 2,500 100% 1 2 30,000 - 6
(1) All Physical parameters must be input even if manual overrides for volume or area are used. 2. MEG 2003 p. 3-11 3. Comision 2010
Roads - User Input (cont.)
Haul Road Safety Berms Berm Berm Number of Description Berm Berm Base Sideslope Berms (2) (required) Length Height Width Angle (1 or 2 sides) ft ft ft _H:1V 1 Mine Access Roads, 2 4,921 2 4 1.0 1 2 Air Strip, 3 0 0 0 0.0 1 3 Overburden Haul Road, 3 7,200 3 8 1.3 1 4 Ore Haul Road, 3 4,480 3 8 1.3 1 5 Coches Haul Road, 3 2,500 3 8 1. 3 1
(2) Enter 1 if berm on only one side of road, 2 if both sides of road are bermed.
Roads - User Input (cont.) You must fill in ALL green cells and relevant blue cells in this section for each road
Grading Growth Media Revegetation Dozing Description Material Recontouring No. of Excavators Growth Media Cover Placement Scarifying/ (required) Condition Cut Material Type Equipment Fleet (3) if grade >30% Material Type Equipment Fleet Seed Mix Mulch Fertilizer Ripping? Ripping Fleet (select) (select) (select) (select) (select) (select) (select) (select) (select) (select) (select) 1 Mine Access Roads, 2 1 Basalt Med Dozer 1 Alluvium Small Truck Mix 1 Straw Mulch Chemical Yes Med Dozer 2 Air Strip, 3 1 Basalt Med Dozer 1 Alluvium Small Truck Mix 1 Straw Mulch Chemical Yes Med Dozer 3 Overburden Haul Road, 3 1 Basalt Med Dozer 1 Alluvium Small Truck Mix 1 Straw Mulch Chemical Yes Med Dozer 4 Ore Haul Road, 3 1 Basalt Med Dozer 1 Alluvium Small Truck Mix 1 Straw Mulch Chemical Yes Med Dozer 5 Coches Haul Road, 3 1 Basalt Med Doze r 1 Alluvium Small Truck Mix 1 Straw Mulch Chemical Yes Med Doze r
(3) If original slope >30% "optimize" option will only select among the excavator options.
1/17/2011 Copyright © 2004-2008 - SRCE Software. All Rights Reserved. Page 1 of 3 Roads Bond Calculation
Project Name: Marlin - Reclamation Plan Roads Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls
Roads - Calculations
Regrading Volume and Footprint Volume Safety Berm Volume Calculation
a # b! h 2
Figure 1 - Regrading Volume Calculation
Will not allow dozer for slopes greater than 30% For dozer regrading push distance = road width Total berm volume doubled if both sides of road are bermed. Assumes dozer push is uphill If length of berm on each side of road is different, input total length of both berms Assumes minimum push distance of 100 ft and input 1 for number of sides
Ripping/Scarifying Calculations
Minimum 1 hr ripping/scarifying time per area Number of passes = Final slope length ÷ Grader width Travel distance = Number of passes x Road length Total hours = (Travel distance ÷ Grader productivity) + (Number of passes x Grader maneuver time) For dozer regrading assumes push distance = 3 x road width
Revegetation Calculations
Minimum of 1 acre crew time per area
Roads - Regrading Costs
Total Total Description Regrading Recontouring Fleet Labor Equipment Total Regrading (required) Volume Fleet Productivity Total Fleet Hours Cost Cost Cost cy cy/h r hr $ $ $ 1 Mine Access Roads, 2 12,199 Med Dozer 157 77.7 $4,500 $13,651 $18,151 2 Air Strip, 3 118,624 Med Dozer 110 1078.4 $62,450 $189,464 $251,914 3 Overburden Haul Road, 3 101,909 Med Dozer 157 649.1 $37,589 $114,040 $151,629 4 Ore Haul Road, 3 37,987 Med Dozer 282 134.7 $7,800 $23,665 $31,465 5 Coches Haul Road, 3 21,198 Med Doze r 282 75.2 $4,355 $13,212 $17,567 291,917 2015.1 $116,694 $354,032 $470,726
Roads - Growth Media Costs
1/17/2011 Copyright © 2004-2008 - SRCE Software. All Rights Reserved. Page 2 of 3 Roads Bond Calculation
Project Name: Marlin - Reclamation Plan Roads Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls
Growth Media Total Total Description Growth Media Replacement Number of Labor Equipment Total Topsoiling (required) Volume Fleet Fleet Productivity Trucks/ Scrapers Total Fleet Hours Cost Cost Cost cy LCY/hr $ $ $ 1 Mine Access Roads, 2 8,903 Small Truck 571 16 15.6 $13,187 $33,704 $46,891 2 Air Strip, 3 20,812 Small Truck 571 16 36.4 $30,769 $78,644 $109,413 3 Overburden Haul Road, 3 31,580 Small Truck 571 16 55.3 $46,745 $119,478 $166,223 4 Ore Haul Road, 3 16,800 Small Truck 571 16 29.4 $24,852 $63,520 $88,372 5 Coches Haul Road, 3 9,375 Small Truck 571 16 16.4 $13,863 $35,433 $49,296 87,470 153.1 $129,416 $330,779 $460,195
Roads - Scarifying/Revegetation Costs
Ripping Ripping Total Revegetation Revegetation Revgetation Total Description Final Slope Equipment Labor Ripping Labor Equipment Material Revegetation (required) Surface Area Length Ripping Hours Cost Costs Costs Cost Cost Cost Cost acres ft hrs $ $ $ $ $ $ $ 1 Mine Access Roads, 2 5.52 49 3.7 $650 $214 $864 $431 $370 $3,061 $3,862 2 Air Strip, 3 12.9 216 9.4 $1,651 $544 $2,195 $1,006 $864 $7,153 $9,023 3 Overburden Haul Road, 3 19.57 118 13.7 $2,407 $793 $3,200 $1,526 $1,311 $10,851 $13,688 4 Ore Haul Road, 3 10.41 101 7.7 $1,353 $446 $1,799 $812 $697 $5,772 $7,281 5 Coches Haul Road, 3 5.81 101 4.3 $755 $249 $1,004 $453 $389 $3,222 $4,064 54.21 38.8 $6,816 $2,246 $9,062 $4,228 $3,631 $30,059 $37,918
1/17/2011 Copyright © 2004-2008 - SRCE Software. All Rights Reserved. Page 3 of 3 Roads Bond Calculation Pits Project Name: Marlin - Reclamation Plan Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls Pits - Cost Summary Labor Equipment Materials Totals Safety Berm Construction Cost $1,424 $2,645 N/A $4,069 Safety Berm Revegetation Cos t $2,206 $1,894 $15,682 $19,782 TOTALS $3,630 $4,539 $15,682 $23,851
Color Code Key User Input - Direct Input Direct Input User Input - Pull Down List Pull Down Selection Program Constant (can override) Alternate Input Standardized Data (cannot override) Standardized Data Program Calculated Value Locked Cell - Formula or Reference
Pits - User Input
Pit Berms Berm Construction Revegetation
Berm Berm Berm Berm Description (or Highwall) Berm Base Sideslope Berm Material Construction (required) ID Code Length Height Width Angle Type Equipment Fleet Seed Mix Mulch Fertilizer -1 ft ft ft _H:1V (select) (select) (select) (select) (select) 1 Marlin Open Pit (MEG 2003, Fig. 3.4-4) 8,000 3 10 1.3 Alluvium Small Mix 1 Straw Mulch Chemical 2 Cochise Open Pit (MEG 2003, Fig. 3.4-4) 3,20 0 3 1 0 1.3 Alluvium Small Mix 1 Straw Mulch Chemical
Pits - Calculations
Safety Berm Volume Calculation
a # b! h 2
Productivity assumes push distance of: 100 feet
Revegetation Calculations
Dozer: Length x (Berm Base Width + Dozer Push Distance) - accounts for disturbance created in borrow area Minimum 1 acre revegetation crew time per area
Pits - Safety Berm Construction Costs Safety Berm Safety Safety Total Safety Corrected Berm Berm Safety Description Berm Selected Fleet Total Labor Equipment Berm (required) Volume Fleet Productivity Hours Cost Cost Cost cy cy/hr $ $ $ 1 Marlin Open Pit (MEG 2003, Fig. 3. 4 5,422 Small (D7R) 308 17.6 $1,019 $1,892 $2,911 2 Cochise Open Pit (MEG 2003, Fig. 2,169 Small (D7R) 308 7.0 $405 $753 $1,158 7,591 24.6 $1,424 $2,645 $4,069
Pits - Safety Berms - Revegetation Costs
1/17/2011 Copyright © 2004-2008 - SRCE Software. All Rights Reserved. Page 1 of 2 Pits Bond Calculation Pits Project Name: Marlin - Reclamation Plan Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls
Revegetation Revegetation Revgetation Total Description Labor Equipment Material Revegetation (required) Flat Area Cost Cost Cost Cost acres $ $ $ $ 1 Marlin Open Pit (MEG 2003, Fig. 3. 4 20.2 $1,576 $1,353 $11,201 $14,130 2 Cochise Open Pit (MEG 2003, Fig. 8.1 $630 $541 $4,481 $5,652 28.3 $2,206 $1,894 $15,682 $19,782
1/17/2011 Copyright © 2004-2008 - SRCE Software. All Rights Reserved. Page 2 of 2 Pits Bond Calculation Underground Openings Project Name: Marlin - Reclamation Plan Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls Underground Openings Cost Summary Labor Equipment Materials Totals Adit and Decline Pluggin g $5,118 $3,439 $2,275 $10,832 Shaft Backfill/Cove r $163 $401 N/A $564 Shaft Capping $3,011 $334 $2,328 $5,672 TOTAL S $8,292 $4,17 4 $4,603 $17,068
Color Code Ke y User Input - Direct Input Direct Input User Input - Pull Down List Pull Down Selection Program Constant (can override) Alternate Inpu t Program Calculated Value Locked Cell - Formula or Referenc e
Adits, Declines and Portals - User Input
Physical Characteristics Backfill Material Backfill Distance Slope from Description Backfill/ Distance to Backfill Material to Backfill Adit to (required) ID Code Height Width Plug Type Bulkhead Material Type Borrow Borrow Area -1 ft ft ft (select) (select) ft % grade 1 Decline (MEG 2003, p. 3-28 ) 16 15 Concrete + R 15 0 1.2 Alluvium 50 0 0
Notes: 1) Foam (adit) option is for smaller openings that can be plugged with simple forms and a 5' thick plug. 2) Foam (production) option is for larger production openings (declines, etc.) and requires larger form construction and minimum 10' thick plug. 3) All foam plugs include minimum 15' of backfill from opening to plug. 4) Bat gate option is for small openings and the material cost is the same for any size opening.
Shaft Openings - User Input You must fill in ALL green cells and relevant blue cells in this section for each shaft
Physical Characteristics Backfill or Foundation Cover Thickness Shaft Depth Cover Cover/ (if not Distance Slope from Description (for backfill Backfill/ Material Backfill complete to Backfill Shaft to (required) ID Code Diameter method) Plug Type Type Fleet backfill) Borrow Borrow Area -1 ft ft (select) (select) (select) ft ft % grade 1 Ventilation Shaft (MEG 2003 p. 3-29 ) 13 Concrete Ca p Alluvium Small Truc k 2 50 0 0
Underground Openings - Calculations
Adits, Declines and Portals - Volume Calculations
Concrete Cover/Bulkhead Volume Calculation
Using Means Heavy Construction Cost Data (2004) Estimage cover/bulkhead thickness Assumes that all concrete works are reinforced Productivity for crew from Means Heavy Construction Cost Data (2004) adjusted for supervision (addressed in Misc. Costs) and Davis-Bacon Wage Rates Assumes 18 in (45 cm) thick slab
Backfill Calculations
Uses 1 large and 1 small dozer for adit backfil l Assumes max 400 foot (122 m) push Assumes average operator and 50 min/hr availability
Uses truck & loader load, haul place fleets for shaft s Concrete cap will be 1.5 feet (45 cm) thick, reinforced, structually supported.
1/17/2011 Copyright © 2004-2008 - SRCE Software. All Rights Reserved. Page 1 of 2 Underground Openings Bond Calculation Underground Openings Project Name: Marlin - Reclamation Plan Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls If concrete cap is used, assume 10 feet (3 m) of rock backfill on top of cap. Assumes that all concrete works are reinforced If backfill is used, assume overfill by 5 feet (1.5 m) Carpenter D-B rate incl Fringe $41.44 per hour
Shaft Volume Calculations
Adits, Declines and Portals Plugging
Uses RS Means Heavy Construction Cost Data for bulkhead production rate, material costs and crews
(1) (2,3,4) Bulkhead Construction Backfill or Foam Bat Gate or Culvert Total Costs Backfill Total Total Total Total Total Total Material Total Total Total Total Total Total Total Total Description Bulkhead (rock) Labor Equipment Material Bulkhead Labor Equipment (Foam) Backfill Labor Equipment Material Total Bat Labor Equipment Material Plugging (required) Volume Volume Cost Cost Cost Cost Cost Cost Cost Cost Cost Cost Cost Gate Cost Cost Cost Cost Costs cy cy $$$$$$$$$$$$$$$$ 1 Decline (MEG 2003, p. 3-28 ) 13 1,333 $4,087 $462 $2,275 $6,824 $1,031 $2,977 $4,008 $5,118 $3,439 $2,275 $10,832 13 $4,087 $462 $2,275 $6,82 4 $1,031 $2,977 $4,008 $5,118 $3,439 $2,275 $10,832
Notes: 1) Foam costs include 1 hour move to and setup + 1 hr. minimum crew time 2) Assumes 1 hr walk-in/walk-out time for equipment 3) Batgate assumes 8 hr install time each 4) Bat culvert backfill costs based on one 8-hr day (i.e. backfilling hours = 8 hrs).
Shaft Plugging Cover/Cap Backfill/Cover Backfill Total Total Total Total Total Total Total Description Cover or Cover Labor Equipment Material Shaft Cap Labor Equipment Backfill (required) Area Volume Cost Cost Cost Cost Cost Cost Cost ft2 cy $ $ $ $ $ $ $ 1 Ventilation Shaft (MEG 2003 p. 3-2 9 133 10 $3,011 $334 $2,328 $5,672 $163 $401 $564 133 10 $3,011 $334 $2,328 $5,672 $163 $401 $564
1/17/2011 Copyright © 2004-2008 - SRCE Software. All Rights Reserved. Page 2 of 2 Underground Openings Bond Calculation
Project Name: Marlin - Reclamation Plan Process Ponds Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls
Process Ponds - Cost Summary Labor Equipment Materials Totals Backfilling Costs $40,518 $100,940 N/A $141,458 Growth Media Placement Costs $22,316 $57,038 N/A $79,354 Liner Cutting & Folding Costs $45,956 $25,076 $71,032 Subtotal Earthworks $108,790 $183,054 $0 $291,844 Revegetation Costs $780 $670 $5,275 $6,725 TOTALS $109,570 $183,724 $5,275 $298,569
Color Code Key User Input - Direct Input Direct Input User Input - Pull Down List Pull Down Selection Program Constant (can override) Alternate Inpu t Program Calculated Value Locked Cell - Formula or Reference
Process Ponds - User Input You must fill in ALL green cells and relevant blue cells in this section for each pond
(1) (1) Pond Dimensions Backfill Growth Media Distance Pond Disturbed Area from Slope from Pond Volume Distance from Slope from Description Pond Pond Pond Sideslope (if calculated Percent Backfill Facility to (if calculated Growth Media Growth Media Facility to (required) ID Code Length Width Depth Angle elsewhere) Backfill Borrow Borrow Area elsewhere) Thickness Stockpile Stockpile -1 ft ft ft _H:1V acres (100% if blank) ft % grade cy in ft % grade 1 Crude Water Pond, 2 350 300 35 10.0 4.00 100% 2,500 -6 17,000 12 30,000 -6 2 TSF Filtrate Pond, 3 300 300 15 2.5 4.00 100% 2,500 -6 12 30,000 -6 3 Open Pit Sediment Pond, ? 300 100 15 2.5 100% 500 0 12 30,000 -6 4 TSF II Filtrate Pon d 300 100 15 2. 5 200% 500 0 1 2 30,000 - 6
(1) All Pond Dimension and Backfill parameters must be input even if manual overrides for volume or area are used. 2. MEG 2003, Fig. 3.4-2 and p. 3-49 3. MEG 2003, Fig. 3.4-10 and p. 3-14
Process Ponds - User Input (cont.) Line r Backfill Growth Media Revegetation Growth Media Crew Backfill Placement Description Cut & Fold Backfill Equipment Growth Media Equipment (required) Time Material Type Fleet Material Type Fleet Seed Mix Mulch Fertilizer hrs (select) (select) (select) (select) (select) (select) (select) 1 Crude Water Pond, 2 120 Alluvium Small Truck Alluvium Small Truck Mix 1 Straw Mulch Chemical 2 TSF Filtrate Pond, 3 121 Alluvium Small Truck Alluvium Small Truck Mix 1 Straw Mulch Chemical 3 Open Pit Sediment Pond, ? Alluvium Small Truck Alluvium Small Truck Mix 2 Straw Mulch Chemical 4 TSF II Filtrate Pon d 121 Alluvium Small Truc k Alluvium Small Truc k Mix 3 Straw Mulch Chemical
Process Ponds - Calculations
Pond Volume Calculation
1/17/2011 Copyright © 2004-2008 - SRCE Software. All Rights Reserved. Page 1 of 3 Process Ponds Bond Calculation
Project Name: Marlin - Reclamation Plan Process Ponds Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls
Revegetation Calculations
Minimum 1 acre revegetation crew time per area
Process Ponds - Liner Cutting and Folding
Total Total Total Liner Description Labor Equipment Removal (required) Crew Hours Cost Cost Cost hrs $ $ $ 1 Crude Water Pond, 2 120.0 $15,234 $8,312 $23,546 2 TSF Filtrate Pond, 3 121.0 $15,361 $8,382 $23,743 3 Open Pit Sediment Pond, ? 4 TSF II Filtrate Pon d 121.0 $15,361 $8,382 $23,743 362.0 $45,956 $25,076 $71,032
Process Ponds - Backfill and Growth Media Costs Pond Backfill Growth Media
Number of Total Total Topsoil Number of Total Total Description Backfill Backfill Fleet Trucks/ Total Fleet Labor Equipment Total Backfill Topsoil Repacement Fleet Trucks/ Total Fleet Labor Equipment Total (required) Volume Fleet Productivity Scrapers Hours Cost Cost Cost Volume Fleet Productivity Scrapers Hours Cost Cost Topsoiling Cost cy LCY/hr hrs $ $ $ cy LCY/hr $ $ $ 0 1 Crude Water Pond, 2 17,000 Small Truck 560 3 30.4 $7,712 $19,327 $27,039 6,453 Small Truck 571 16 11.3 $9,552 $24,414 $33,966
1/17/2011 Copyright © 2004-2008 - SRCE Software. All Rights Reserved. Page 2 of 3 Process Ponds Bond Calculation
Project Name: Marlin - Reclamation Plan Process Ponds Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls
2 TSF Filtrate Pond, 3 38,542 Small Truck 560 3 68.8 $17,452 $43,741 $61,193 6,453 Small Truck 571 16 11.3 $9,552 $24,414 $33,966 3 Open Pit Sediment Pond, ? 9,375 Small Truck 298 1 31.5 $5,123 $12,637 $17,760 1,111 Small Truck 571 16 1.9 $1,606 $4,105 $5,711 4 TSF II Filtrate Pond 18,750 Small Truck 298 1 62.9 $10,231 $25,235 $35,466 1,111 Small Truck 571 16 1.9 $1,606 $4,105 $5,711
83,667 193.6 $40,518 $100,940 $141,458 15,129 26.4 $22,316 $57,038 $79,354
Process Ponds - Revegetation Costs
Revegetation Revegetation Revgetation Total Description Labor Equipment Material Revegetation (required) Flat Area Cost Cost Cost Cost acres $ $ $ $ 1 Crude Water Pond, 2 4 $312 $268 $2,218 $2,798 2 TSF Filtrate Pond, 3 4 $312 $268 $2,218 $2,798 3 Open Pit Sediment Pond, ? 0.7 $78 $67 $409 $554 4 TSF II Filtrate Pon d 0.7 $78 $67 $430 $575 9.4 $780 $670 $5,275 $6,725
1/17/2011 Copyright © 2004-2008 - SRCE Software. All Rights Reserved. Page 3 of 3 Process Ponds Bond Calculation Heap Leach Project Name: Marlin - Reclamation Plan Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls Heap Leach Pads - Cost Summary Labor Equipment Materials Totals Grading Costs N/A $0 Cover Placement Cos t N/A $0 Topsoil Placement Cos t N/A $0 Ripping/Scarifying Cos t N/ A $0 Subtotal Earthworks $0 $0 $0 $0 Revegetation Cos t $0 TOTALS $0 $0 $0 $0
Color Code Ke y User Input - Direct Input Direct Input User Input - Pull Down List Pull Down Selection Program Constant (can override) Alternate Inpu t Program Calculated Valu e Locked Cell - Formula or Referenc e
Heap Leach Pads - User Input You must fill in ALL green cells and relevant blue cells in this section for each heap, lift or heap category (1) Physical Cover(lower layer) Growth Media Average Flat Area Long Final Cover Distance Slope Distance from Slope Underlying Dimension (Regraded) Regrade Volume Cover Thickness from from Slope Growth Flat Area Growth from Description Ground Final Top Lift (heap) Mid-Bench (ripping Heap (if calculated Thickness Flat Cover Heap to Media Growth Media Material Heap to (required) ID Code Slope Ungraded Slope Final Slope Slope Height Length distance) Footprint elsewhere) Slopes Areas Borrow Cover Borrow Thickness Thickness Stockpile Stockpile -1 % grade _ H:1V _ H:1V % grade ft ft ft acres c y in in ft % grade in in ft % grade 1
Notes: (1) All Physical parameters must be input even if manual overrides for volume or area are used.
Heap Leach Pads - User Input (cont.) You must fill in ALL green cells and relevant blue cells in this section for each heap, lift or heap category Grading Cover Growth Media Revegetation Cove r Growth Growth Heap Grading Cover Placement Media Media Scarifying/ Description Dozing Material Equipment Slot/ Material Equipment Material Equipment Seed Mix Seed Mix Flat Mulch Mulch Fertilizer Fertilizer Slope Flat Area Ripping (required) Material Type Fleet Side-by-Side Type Fleet Type Fleet Slopes Areas Slopes Flat Areas Slopes Flat Areas Scarify/ Rip? Scarify/ Rip? Fleet (select) (select) (select) (select) (select) (select) (select) (select) (select) (select) (select) (select) (select) (select) (select) (select) (select) 1
Heap Leach Pads - Calculations
Regrading Volume Calculation Final Slope Area and Footprint Area Calculations
Figure 3 - Final Slope Area and Footprint Area Calculation
Figure 2 - Regrading Volume Calculation
Drainage Channel Calculations Regrading Push Distance Calculation Use when existing heap material is not suitable drain rock dozing distance: based on 2/3 final cut slope + 2/3 final fill slope (minimum = 50 ft) Assume to be constructed in existing solution channels Assume 2H:1V ditch sideslopes Drain rock assumed to be Gravel - Dry at 2,550 lb/cy (1,510 kg/m3) from CAT Handbook 35th Ed.
1/17/2011 Copyright © 2004-2008 - SRCE Software. All Rights Reserved. Page 1 of 2 Heap Leach Bond Calculation Heap Leach Project Name: Marlin - Reclamation Plan Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls
Ripping/Scarifying Calculations 2 c1 " c 2 ! 3 Minimum 1 hr ripping/scarifying per area
Slopes: Number of passes = Final slope length ÷ Grader width Travel distance = Number of passes x Mid-bench length Total hours = (Travel distance ÷ Grader productivity) + (Number of passes x Grader maneuver time)
Flat Areas: Flat area width = Final flat area ÷ Average long dimensions Number of passes = Flat area width ÷ Grader width Travel distance = Number of passes x Average long dimensions Total hours = (Travel distance ÷ Grader productivity) + (Number of passes x Grader maneuver time) Figure 2 - Dozing Distance Calculation Revegetation: Minimum 1 acre revegetation crew time per area
Heap Leach Pad - Regrading Costs Productivity = Dozer Productivity x Grade Correction x Density Correction x Operator (0.75) x Material x Visibility x Job Efficiency (0.83) x (Slot/Side-by-Side)
Dozing Uncorrected Side-by-Side Total Total Total Total Description Regrading Distance Dozer Grade Dozing Density or Hourly Dozer Labor Equipment Total Regrading (required) Volume (see above) Productivity Correction Material Correction Slot Dozing Productivity Hours Cost Cost Cost cy ft cy/h r cy/h r hr $ $ $ 1
Heap Leach Pad - Cover and Growth Media Costs Cover (lower layer) Growth Media Placement
Cover Number of Cover Cover Growth Media Number of Total Total Total Description Cover Replacement Fleet Trucks/ Total Fleet Labor Equipment Total Cover Growth Media Replacement Fleet Trucks/ Labor Equipment Topsoiling (required) Volume Fleet Productivity Scrapers Hours Cost Cost Cost Volume Fleet Productivity Scrapers Total Fleet Hours Cost Cost Cost cy LCY/hr $ $ $ cy BCY/hr $ $ $ 1
Heap Leach Pad - Scarifying/Revegetation Costs
Slope Flat Area Scarifying/ Scarifying/ Total Total Final Flat Area Scarifying/ Scarifying/ Ripping Ripping Scarifying/ Revegetation Revegetation Revgetation Total Description Slope Flat Surface Slope Long Ripping Ripping Equipment Labor Ripping Labor Equipment Material Revegetation (required) Area Area Area Length Dimension Hours Hours Cost Costs Costs Cost Cost Cost Cost acres acres acres ft ft hrs hrs $$ $ $ $ $$ 1
1) Minimum total ripping hours = 1 (i.e. If total ripping hrs (slope + flat) < 1, then one hour of fleet time is assumed, regardless of acres shown in in scarifying table.)
1/17/2011 Copyright © 2004-2008 - SRCE Software. All Rights Reserved. Page 2 of 2 Heap Leach Bond Calculation Waste Rock Dumps Project Name: Marlin - Reclamation Plan Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls Waste Rock Dumps - Cost Summary Labor Equipment Materials Totals Grading Costs $1,623,322 $4,924,907 N/A $6,548,22 9 Cover Placement Cos t $90,425 $236,836 N/A $327,261 Topsoil Placement Cos t $184,867 $472,510 N/A $657,37 7 Scarifying Cos t $10,874 $3,138 N/ A $14,012 Subtotal Earthworks $1,909,488 $5,637,391 $0 $7,546,879 Revegetation Cos t $6,037 $5,187 $42,928 $54,152 TOTALS $1,915,52 5 $5,642,57 8 $42,928 $7,601,031
Color Code Ke y User Input - Direct Input Direct Input User Input - Pull Down List Pull Down Selection Program Constant (can override) Alternate Inpu t Program Calculated Valu e Locked Cell - Formula or Referenc e
Waste Rock Dumps - User Input You must fill in ALL green cells in this section for each dump, lift or dump category
Physical Cover (upper layer) Growth Media Average Flat Area Long Final Regrade Volume Distance Slope Underlying Dimension (Regraded) (1) Cover Cover from from Slope Growth Flat Area Distance from Slope from Description ID Code Ground Ungraded Final Final Top Lift (dump) Mid-Bench (ripping Dump (if calculated Thickness Thickness Flat Cover Dump to Media Growth Media Growth Media Dump to (required) (optional) Slope Slope Slope Slope Height Length distance) Footprint elsewhere) Slopes Areas Borrow Cover Borrow Thickness Thickness Stockpile Stockpile -1 % Grade _ H:1V _ H:1V % Grade ft ft ft acres c y in in ft % grade in in ft % grade 1 Waste Rock Dump, 2 20.0 1.3 2.5 1 690.0 720.0 720.0 24.0 24.0 500 0 12.0 12.0 30,000 -6 2 Marlin Pit, West Wall, 2 0.0 1.0 2.5 1 165.0 600.0 600.0 24.0 24.0 300 6 12.0 12.0 30,000 -6 3 Marlin Pit, North Wall w/ No Road, 2 0.0 1.0 2.5 1 165.0 330.0 330.0 24.0 24.0 300 6 12.0 12.0 30,000 -6 4 Marlin Pit, North Wall w/ Road, 2 0.0 1.0 2.5 1 230.0 1180.0 1180.0 24.0 24.0 300 6 12.0 12.0 30,000 -6 5 Marlin Pit, East Wall, 2 0.0 1.0 2.5 1 130.0 790.0 790.0 24.0 24.0 300 6 12.0 12.0 30,000 -6 6 Marlin Pit, Southeast Wall, 2 0.0 1.0 2.5 1 100.0 400.0 400.0 24.0 24.0 300 6 12.0 12.0 30,000 -6 7 Cochise Pit, 2 0. 0 1. 0 2.5 1 100. 0 720. 0 720. 0 24. 0 24. 0 30 0 6 12. 0 12. 0 30,00 0 -6
(1) All Physical parameters must be input even if manual overrides for volume is used. 2. Comision 2010
Waste Rock Dumps - User Input (cont.) You must fill in ALL green cells and relevant blue cells in this section for each dump, lift or dump category
Grading Cover Growth Media Revegetation Cove r Growth Growth Dump Grading Cover Placement Media Media Description Dozing Material Material Equipment Slot/Side-by- Material Equipment Material Equipment Seed Mix Seed Mix Flat Mulch Mulch Fertilizer Fertilizer Slope Flat Area Scarify/ (required) Condition Type Fleet Side Type Fleet Type Fleet Slopes Areas Slopes Flat Areas Slopes Flat Areas Scarify/ Rip? Scarify/ Rip? Ripping Fleet (select) (select) (select) (select) (select) (select) (select) (select) (select) (select) (select) (select) (select) (select) (select) (select) (select) 1 Waste Rock Dump, 2 1.0 Alluvium Medium No Alluvium Small Truck Alluvium Small Truck Mix 1 Mix 1 Straw Mulch Straw Mulch Chemical Chemical Yes Yes Med Dozer 2 Marlin Pit, West Wall, 2 0.6 Alluvium Medium No Alluvium Scraper Doze Alluvium Small Truck Mix 1 Mix 1 Straw Mulch Straw Mulch Chemical Chemical Yes Yes Large Dozer 3 Marlin Pit, North Wall w/ No Road, 2 0.6 Alluvium Medium No Alluvium Scraper Doze Alluvium Small Truck Mix 1 Mix 1 Straw Mulch Straw Mulch Chemical Chemical Yes Yes Large Dozer 4 Marlin Pit, North Wall w/ Road, 2 0.6 Alluvium Medium No Alluvium Scraper Doze Alluvium Small Truck Mix 1 Mix 1 Straw Mulch Straw Mulch Chemical Chemical Yes Yes Large Dozer 5 Marlin Pit, East Wall, 2 0.6 Alluvium Medium No Alluvium Scraper Doze Alluvium Small Truck Mix 1 Mix 1 Straw Mulch Straw Mulch Chemical Chemical Yes Yes Large Dozer 6 Marlin Pit, Southeast Wall, 2 0.6 Alluvium Medium No Alluvium Scraper Doze Alluvium Small Truck Mix 1 Mix 1 Straw Mulch Straw Mulch Chemical Chemical Yes Yes Large Dozer 7 Cochise Pit, 2 0.6 Alluvium Medium No Alluvium Scraper Doze Alluvium Small Truc k Mix 1 Mix 1 Straw Mulch Straw Mulch Chemical Chemical Yes Yes Large Doze r
Waste Rock Dumps - Calculations
Regrading Volume Calculation Final Slope Area and Footprint Area Calculations
1/17/2011 Copyright © 2004-2008 - SRCE Software. All Rights Reserved. Page 1 of 3 Waste Rock Dumps Bond Calculation Waste Rock Dumps Project Name: Marlin - Reclamation Plan Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls
Figure 3 - Final Slope Area and Footprint Area Calculation Figure 1 - Regrading Volume Calculation
Regrading Push Distance Calculation Ripping/Scarifying Calculations
dozing distance: based on 2/3 final cut slope + 2/3 final fill slope (minimum = 50 ft) Minimum 1 hr ripping/scarifying time per dump
Slopes: Number of passes = Final slope length ÷ Grader width Travel distance = Number of passes x Mid-bench length Total hours = (Travel distance ÷ Grader productivity) + (Number of passes x Grader maneuver time) Minimum 1 hr 2 c " c ! 3 1 2 Flat Areas: Flat area width = Final flat area ÷ Average long dimensions Number of passes = Flat area width ÷ Grader width Travel distance = Number of passes x Average long dimensions Total hours = (Travel distance ÷ Grader productivity) + (Number of passes x Grader maneuver time)
Revegetation: Minimum 1 acre revegetation crew time per area
Figure 2 - Dozing Distance Calculation
Waste Rock Dumps - Regrading Costs
Productivity = Dozer Productivity x Grade Correction x Density Correction x Operator (0.75) x Material x Visibility x Job Efficiency (0.83) x (Slot/Side-by-Side)
Uncorrected Side-by-Side Total Total Total Description Regrading Dozing Distance Dozer Grade Dozing Density or Total Hourly Total Dozer Labor Equipment Regrading (required) Volume (see above) Productivity Correction Material Correction Slot Dozing Productivity Hours Cost Cost Cost cy ft cy/h r cy/h r hr $ $ $ 1 Waste Rock Dump, 2 2,310,133 1,126 120 1.60 1.00 0.79 1 94 24,575.9 $1,423,190 $4,317,740 $5,740,930 2 Marlin Pit, West Wall, 2 114,311 223 550 1.60 0.60 0.79 1 260 439.7 $25,463 $77,251 $102,714 3 Marlin Pit, North Wall w/ No Road, 2 62,871 223 550 1.60 0.60 0.79 1 260 241.8 $14,003 $42,482 $56,485 4 Marlin Pit, North Wall w/ Road, 2 436,819 311 402 1.60 0.60 0.79 1 190 2,299.0 $133,135 $403,911 $537,046 5 Marlin Pit, East Wall, 2 93,425 176 688 1.60 0.60 0.79 1 325 287.5 $16,649 $50,511 $67,160 6 Marlin Pit, Southeast Wall, 2 27,985 135 883 1.60 0.60 0.79 1 417 67.1 $3,886 $11,789 $15,675 7 Cochise Pit, 2 50,373 135 883 1.60 0.60 0.79 1 417 120.8 $6,996 $21,223 $28,219 3,095,91 7 28,031.8 $1,623,32 2 $4,924,90 7 $6,548,22 9
Waste Rock Dumps - Cover and Growth Media Costs Cover (lower layer) Growth Media Placement
Cover Number of Cover Cover Growth Media Number of Total Total Description Cover Replacement Fleet Trucks/ Total Fleet Labor Equipment Total Cover Growth Media Replacement Fleet Trucks/ Total Fleet Labor Equipment Total (required) Volume Fleet Productivity Scrapers Hours Cost Cost Cost Volume Fleet Productivity Scrapers Hours Cost Cost Topsoiling Cost cy LCY/hr $ $ $ cy BCY/hr $ $ $ 1 Waste Rock Dump, 2 121,290 Small Truck 298 1 407.0 $66,199 $163,284 $229,483 60,645 Small Truck 571 16 106.2 $89,771 $229,449 $319,220 2 Marlin Pit, West Wall, 2 19,909 Scraper Dozer 926 1 21.5 $3,753 $11,393 $15,146 9,954 Small Truck 571 16 17.4 $14,708 $37,593 $52,301 3 Marlin Pit, North Wall w/ No Road, 2 10,938 Scraper Dozer 926 1 11.8 $2,060 $6,253 $8,313 5,469 Small Truck 571 16 9.6 $8,115 $20,741 $28,856 4 Marlin Pit, North Wall w/ Road, 2 54,531 Scraper Dozer 926 1 58.9 $10,280 $31,212 $41,492 27,265 Small Truck 571 16 47.7 $40,321 $103,058 $143,379 5 Marlin Pit, East Wall, 2 20,651 Scraper Dozer 926 1 22.3 $3,892 $11,817 $15,709 10,325 Small Truck 571 16 18.1 $15,300 $39,106 $54,406 6 Marlin Pit, Southeast Wall, 2 8,034 Scraper Dozer 926 1 8.7 $1,518 $4,610 $6,128 4,017 Small Truck 571 16 7.0 $5,917 $15,124 $21,041 7 Cochise Pit, 2 14,455 Scraper Doze r 926 1 15.6 $2,723 $8,267 $10,990 7,228 Small Truck 571 16 12.7 $10,735 $27,439 $38,174 249,809 545.8 $90,42 5 $236,83 6 $327,261 124,903 218.7 $184,86 7 $472,510 $657,37 7
Waste Rock Dumps - Scarifying/Revegetation Costs
1/17/2011 Copyright © 2004-2008 - SRCE Software. All Rights Reserved. Page 2 of 3 Waste Rock Dumps Bond Calculation Waste Rock Dumps Project Name: Marlin - Reclamation Plan Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls Scarifying/ Total Flat Area Slope Flat Area Ripping Scarifying/ Revegetation Revegetation Revgetation Total Description Slope Flat Surface Final Slope Long Scarifying/ Scarifying/ Equipment Ripping Labor Total Scarifying/ Labor Equipment Material Revegetation (required) Area Area Area Length Dimension Ripping Hours Ripping Hours Cost Costs Ripping Costs Cost Cost Cost Cost acres acres acres ft ft hrs hrs $$ $ $$$$ 1 Waste Rock Dump, 2 37.59 2,274 720 27.7 0.1 $4,884 $1,610 $6,494 $2,932 $2,519 $20,844 $26,295 2 Marlin Pit, West Wall, 2 6.17 448 600 4.0 0.1 $930 $237 $1,167 $481 $413 $3,420 $4,314 3 Marlin Pit, North Wall w/ No Road, 2 3.39 448 330 2.3 0.1 $545 $139 $684 $264 $227 $1,879 $2,370 4 Marlin Pit, North Wall w/ Road, 2 16.90 624 1,180 10.9 0.0 $2,473 $631 $3,104 $1,318 $1,132 $9,371 $11,821 5 Marlin Pit, East Wall, 2 6.40 353 790 4.2 0.0 $953 $243 $1,196 $499 $429 $3,549 $4,477 6 Marlin Pit, Southeast Wall, 2 2.49 271 400 1.7 0.1 $408 $104 $512 $194 $167 $1,381 $1,742 7 Cochise Pit, 2 4.48 271 720 3.0 0.0 $681 $174 $855 $349 $300 $2,484 $3,133 77.42 53.8 0.4 $10,87 4 $3,138 $14,012 $6,037 $5,187 $42,928 $54,152
Notes: 1) Minimum total ripping hours = 1 (i.e. If total ripping hrs (slope + flat) < 1, then one hour of fleet time is assumed, regardless of acres shown in in scarifying table.)
1/17/2011 Copyright © 2004-2008 - SRCE Software. All Rights Reserved. Page 3 of 3 Waste Rock Dumps Bond Calculation
Project Name: Marlin - Reclamation Plan Landfills Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls
Landfills - Cost Summary Labor Equipment Materials Totals Grading Costs $596 $1,107 $1,703 Cover Placement Cost $7,410 $18,458 N/A $25,868 Topsoil Placement Cos t $7,185 $18,365 N/A $25,550 Ripping Cost $422 $139 N/A $561 Subtotal Earthworks $15,613 $38,069 $0 $53,682 Revegetation Cost $234 $201 $1,664 $2,099 TOTALS $15,847 $38,270 $1,664 $55,781
Color Code Ke y User Input - Direct Input Direct Inpu t User Input - Pull Down List Pull Down Selection Program Constant (can override) Alternate Inpu t Program Calculated Value Locked Cell - Formula or Reference
Landfills - User Input You must fill in ALL green cells and relevant blue cells in this section for each landfill (1) Physical Cover (lower layer) Growth Media (upper layer)
Average Long Regrade Distance Distance Final Dimension Volume from Slope from from Growth Slope from Description Landfill (ripping (calculated Cover Cover Landfill to Growth Media Media Landfill to (required) ID Code Footprint distance) elsewhere) Thickness Borrow Cover Borrow Thickness Stockpile Stockpile -1 acres ft c y in ft % grade in ft % grade 1 Solid Waste, 2 1 165 525 40 2,500 0 12 30,000 -6 2 Bioremediation Cel l 2 150 700 40 2,500 0 1 2 30,000 - 6
(1) All Physical parameters must be input even if manual overrides for volume or area are used. 2. MEG 2003, p. 3-2 0
Landfills - User Input (cont.) You must fill in ALL green cells and relevant blue cells in this section for each landfill
Grading Cover Growth Media Revegetation Cover Growth Growth Landfill Grading Cover Placement Media Media Scarifying/ Description Dozing Material Equipment Slot/ Material Equipment Material Equipment Ripping (required) Material Type Fleet Side-by-Side Type Fleet Type Fleet Seed Mix Mulch Type Fertilizer Scarify/ Rip? Fleet (select) (select) (select) (select) (select) (select) (select) (select) (select) (select) (select) (select) (select) 1 Solid Waste, 2 1 Alluvium Small No Alluvium Small Truck Alluvium Small Truck Mix 1 Straw Mulch Chemical Yes Med Dozer 2 Bioremediation Cel l 1 Alluvium Small No Alluvium Small Truc k Alluvium Small Truc k Mix 1 Straw Mulch Chemical Yes Med Dozer
Landfills - Calculations
Dozing, Ripping/Scarifying & Revegetation Calculations
Dozing: Dozing distance = 2/3 the area width up to 2/3 of the 600 feet maximum from Catepillar Handbook or 400 feet Assumes flat push (grade correction factor = 1) Minimum 1 hr per area
Ripping: Flat area width = Final flat area ÷ Average long dimensions Number of passes = Flat area width ÷ Grader width Travel distance = Number of passes x Average long dimensions Total hours = (Travel distance ÷ Grader productivity) + (Number of passes x Grader maneuver time) Minimum 1 hr per area
1/17/2011 Copyright © 2004 - 2008 - SRCE Software . All Rights Reserved. Page 1 of 2 Landfills Bond Calculation
Project Name: Marlin - Reclamation Plan Landfills Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls
Revegetation: Minimum 1 acre revegetation crew time per area
Landfills - Regrading Costs
Productivity = Dozer Productivity x Density Correction x Operator (0.75) x Material x Visibility x Job Efficiency (0.83) x (Slot/Side-by-Side) Dozing Uncorrected Total Total Total Description Regrading Distance (see Dozer Dozing Density Side-by-Side Total Hourly Total Dozer Labor Equipment Regrading (required) Volume above) Productivity Material Correction or Slot Dozing Productivity Hours Cost Cost Cost cy ft cy/h r LCY/h r hr $ $ $ 1 Solid Waste, 2 525 264 294 1.00 0.79 1 145 3.6 $208 $387 $595 2 Bioremediation Cel l 700 400 213 1.00 0.79 1 105 6.7 $388 $720 $1,108 1,225 10.3 $596 $1,107 $1,703
Landfills - Cover and Growth Media Costs Cover Placement Growth Media Placement
Cover Number of Cover Cover Growth Media Number of Total Total Total Description Replacement Fleet Trucks/ Total Fleet Labor Equipment Total Cover Growth Media Replacement Fleet Trucks/ Total Fleet Labor Equipment Topsoiling (required) Cover Volume Fleet Productivity Scrapers Hours Cost Cost Cost Volume Fleet Productivity Scrapers Hours Cost Cost Cost ft LCY/h r $ $ $ ft LCY/h r $ $ $ 1 Solid Waste, 2 5,378 Small Truck 453 2 11.9 $2,477 $6,170 $8,647 1,613 Small Truck 571 16 2.8 $2,367 $6,050 $8,417 2 Bioremediation Cel l 10,756 Small Truck 453 2 23.7 $4,933 $12,288 $17,221 3,227 Small Truck 571 16 5.7 $4,818 $12,315 $17,133 16,134 35.6 $7,410 $18,458 $25,868 4,840 8.5 $7,185 $18,365 $25,550
Landfills - Scarifying/Revegetation Costs
Scarifying/ Ripping Scarifying/ Total Revegetation Revegetation Total Description Long Scarifying/ Equipment Ripping Labor Scarifying/ Labor Equipment Revgetation Revegetation (required) Final Area Dimension Ripping Hours Cost Costs Ripping Costs Cost Cost Material Cost Cost acres ft hrs $ $ $ $ $ $ $ 1 Solid Waste, 2 1.00 165 0.8 $141 $46 $187 $78 $67 $555 $700 2 Bioremediation Cel l 2.00 150 1.6 $281 $93 $374 $156 $134 $1,109 $1,399 3.00 2.4 $422 $139 $561 $234 $201 $1,664 $2,099
1/17/2011 Copyright © 2004 - 2008 - SRCE Software . All Rights Reserved. Page 2 of 2 Landfills Bond Calculation
Project Name: Marlin - Reclamation Plan Tailings Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls Tailings - Cost Summary Labor Equipment Materials Totals Tailings Surface Grading Cos t $204,091 $619,183 N/A $823,274 Cover Placement Cos t $779,080 $1,940,515 N/A $2,719,595 Topsoil Placement Cost $1,452,393 $3,712,240 N/A $5,164,633 Ripping Costs $22,901 $22,901 N/A $45,802 Subtotal Earthworks $2,458,465 $6,294,839 $0 $8,753,304 Revegetation Cost $23,876 $20,509 $169,733 $214,118 TOTALS $2,482,341 $6,315,348 $169,733 $8,967,422
Color Code Key User Input - Direct Input Direct Input User Input - Pull Down List Pull Down Selection Program Constant (can override) Alternate Inpu t Program Calculated Value Locked Cell - Formula or Reference
Tailings - User Input You must fill in ALL green cells and relevant blue cells in this section for each tailings impoundment
Physical Cover (lower layer) Growth Media (upper layer) Surface Final Final Mid- Regrade Tailings Distance Slope Tailings Distance from Slope (Regraded) Final Tailings Embankment Volume Embankment Surface from from Embankment Surface Growth from Description Embankment Embankment Surface or Ripping (calculated Cover Cover Cover Tailings to Growth Media Growth Media Material Tailings to (required) ID Code Slope Height Area Length elsewhere) Thickness Thickness Borrow Borrow Thickness Thickness Stockpile Stockpile -1 _ H:1V ft acres ft c y in in ft % grade in in ft % grade 1 TSF Surface, 1 151 1,200 350,000 36 2,500 6 24 30,000 -6 2 TSF Dam Lift, 2 4.1 1,800 100,000 200 2,500 6 12 30,000 -6 3 TSF I I 151 1,200 350,000 3 6 2,500 6 24 30,000 - 6
Notes: 1. MEG 2003, p. 3-1 4 2. Robertson 2009 Tailings - User Input (cont.) You must fill in ALL green cells and relevant blue cells in this section for each tailings impoundment
Revegetation Grading Cover Growth Media Revegetation Cover Growth Grading Placement Media Growth Media Seed Mix Seed Mix Mulch Mulch Fertilizer Fertilizer Embankment Tailings Description Equipment Slot/Side-by- Cover Equipment Material Equipment Embankment Tailings Embankment Tailings Embankment Tailing Slope Scarify/ Surface Scarifying/ (required) Fleet Side Material Type Fleet Type Fleet Slope Surface Slopes Surface Slopes Surface Rip? Scarify/ Rip? Ripping Fleet (select) (select) (select) (select) (select) (select) (select) (select) (select) (select) (select) (select) (select) (select) (select) 1 TSF Surface, 1 Medium No Alluvium Small Truck Alluvium Small Truck None Mix 1 None Straw Mulch None Chemical No Yes Small Dozer 2 TSF Dam Lift, 2 Medium No Alluvium Small Truck Alluvium Small Truck None Mix 1 None Straw Mulch None Chemical No Yes Small Dozer 3 TSF I I Medium No Alluvium Small Truc k Alluvium Small Truc k None Mix 1 None Straw Mulch None Chemical No Yes Small Doze r
Tailings - Calculations
Surface Area Calculations Grading Calculations
Top Surface Area provided by user Grading assumed on impoundment surface only, not embankment Average push distance assumed to be 2/3 of the 600 feet maximum from Catepillar Handbook or 400 feet Material assumed to be loose stockile (1.2 productivity factor) Dozing density correction based on dry sand = 2300/2400 = 0.96 Slope assumed to be 0 to 5% (1.0 productivity factor)
Figure 1 - Surface Areas Ripping/Scarifying/Revegetation Calculation
Minimum 1 hr ripping/scarifying per area Minimum 1 acre revegetation crew time per area
Regrading Volume Calculation
1/17/2011 Copyright © 2004 - 2008 - SRCE Software . All Rights Reserved. Page 1 of 3 Tailings Bond Calculation
Project Name: Marlin - Reclamation Plan Tailings Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls
Final Slope Area and Footprint Area Calculation s
Figure 1 - Regrading Volume Calculation
Regrading Push Distance Calculation Embankment height cos(Overal l slope angle
2 c " c ! 3 1 2
Figure 2 - Final Slope Area and Footprint Area Calculation
Figure 2 - Dozing Distance Calculation
Tailings - Surface Regrading Costs
Productivity = Dozer Productivity x Grade Correction x Density Correction x Operator (0.75) x Material x Visibility x Job Efficiency (0.83) x (Slot/Side-by-Side) Dozing Uncorrected Total Total Total Description Regrading Distance (see Dozer Grade Density Dozing Side-by-Side Total Hourly Total Dozer Labor Equipment Regrading (required) Volume above) Productivity Correction Correction Material or Slot Dozing Productivity Hours Cost Cost Cost cy ft cy/hr cy/h r hr $ $ $ 1 TSF Surface, 1 350,000 400 317 1.00 0.96 1.20 1 227 1541.9 $89,291 $270,896 $360,187 2 TSF Dam Lift, 2 100,000 400 317 1.00 0.96 1.20 1 227 440.5 $25,509 $77,391 $102,900 3 TSF I I 350,000 400 317 1.00 0.96 1.20 1 227 1541.9 $89,291 $270,896 $360,187 800,000 3524.3 $204,091 $619,183 $823,274
Tailings - Cover and Growth Media Costs Cover Placement Growth Media Placement
Cover Cover Number of Total Total Total Cover Growth Media Growth Media Number of Total Total Total Topsoil Description Placement Fleet Trucks/ Total Fleet Labor Equipment Placement Growth Media Placement Fleet Trucks/ Total Fleet Labor Equipment Placement (required) Cover Volume Fleet Productivity Scrapers Hours Cost Cost Cost Volume Fleet Productivity Scrapers Hours Cost Cost Cost cy LCY/hr $ $ $ cy LCY/hr $ $ $ 1 TSF Surface, 1 730,840 Small Truck 420 2 1740.1 $362,219 $902,207 $1,264,426 487,227 Small Truck 571 16 853.3 $721,294 $1,843,589 $2,564,883 2 TSF Dam Lift, 2 110,244 Small Truck 420 2 262.5 $54,642 $136,101 $190,743 6,615 Small Truck 571 16 11.6 $9,805 $25,062 $34,867 3 TSF I I 730,840 Small Truck 420 2 1740.1 $362,219 $902,207 $1,264,426 487,227 Small Truck 571 16 853.3 $721,294 $1,843,589 $2,564,883 1,571,924 3742.7 $779,080 $1,940,515 $2,719,595 981,068 1718.2 $1,452,393 $3,712,240 $5,164,633
Tailings - Scarifying/Revegetation Costs
Scarifying/ Scarifying/ Total Total Slope Flat Area Ripping Ripping Scarifying/ Revegetation Revegetation Revgetation Total Description Embankment Tailings Surface Final Slope Scarifying/ Scarifying/ Labor Equipment Ripping Labor Equipment Material Revegetation (required) Slope Area Surface Area Area Length Ripping Hours Ripping Hours Cost Cost Cost Cost Cost Cost Cost acres acres acres ft hrs hrs $ $ $ $ $ $ $ 1 TSF Surface, 1 0.1 151 151.10 0 105.1 $11,300 $11,300 $22,600 $11,778 $10,117 $83,730 $105,625 2 TSF Dam Lift, 2 0.1 4.1 4.20 0 2.8 $301 $301 $602 $320 $275 $2,273 $2,868 3 TSF I I 0.1 151 151.10 0 105.1 $11,300 $11,300 $22,600 $11,778 $10,117 $83,730 $105,625
1/17/2011 Copyright © 2004 - 2008 - SRCE Software . All Rights Reserved. Page 2 of 3 Tailings Bond Calculation
Project Name: Marlin - Reclamation Plan Tailings Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls 0.3 306.1 306.4 213.0 $22,901 $22,901 $45,802 $23,876 $20,509 $169,733 $214,118
1/17/2011 Copyright © 2004 - 2008 - SRCE Software . All Rights Reserved. Page 3 of 3 Tailings Bond Calculation
Project Name: Marlin - Reclamation Plan Foundations & Buildings Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls Buildings & Foundation Demolition Cost Summary Labor Equipment Materials Totals Building Demolition Cost $508,841 $508,841 N/A $1,017,682 Wall Demolition Cost $309,698 $49,677 N/A $359,375 Slab Demolition $54,434 $151,623 N /A $206,057 Subtotal Demolition $872,973 $710,141 $0 $1,583,114 Cover Placement Cost $18,358 $45,723 N/A $64,081 Growth Media Placement Cost $61,451 $157,079 N/A $218,530 Ripping Cost $5,610 $1,849 N/A $7,459 Subtotal Earthworks $85,419 $204,651 $0 $290,070 Revegetation Cost $2,870 $2,466 $13,032 $18,368 TOTALS $961,262 $917,258 $13,032 $1,891,552
Color Code Ke y User Input - Direct Input Direct Inpu t Minimum thickness of cover over unbroken slab: 5.0 ft < In Nevada use 5ft per NV BLM User Input - Pull Down List Pull Down Selection Program Constant (can override) Alternate Inpu t Program Calculated Value Locked Cell - Formula or Reference
Buildings & Foundation - User Input You must fill in ALL green cells and relevant blue cells in this section for each building or facility (1) (1) Physical Characteristics Foundation Cover Growth Media (entire footprint)
Average Flat Building Area Distance Area Long Footprint from Foundation Dimension (including Foundation Foundation Slope from Distance from Slope from Description Eve Slab Wall Wall (ripping surrounding Cover Cover Facility to Growth Media Growth Media Facility to (required) ID Code Length Width Height Thickness Thickness Height distance) facilities) Thickness Borrow Area Borrow Area Thickness Stockpile Stockpile -1 ft ft ft in in ft ft acres in ft % grade in ft % grade 1 Administration, 2 65.6 32.8 15 6 8 2 66 0.10 24 2,500 0 12 30,000 -6 2 Engineering, 2 39.4 32.8 15 6 8 2 70 0.06 24 2,500 0 12 30,000 -6 3 Training, 2 85.3 32.6 15 6 8 2 70 0.13 24 2,500 0 12 30,000 -6 4 Change House, 2 13.1 49.2 15 6 8 2 70 0.03 24 2,500 0 12 30,000 -6 5 Enclosed Warehouse, 3 65.6 65.6 20 12 6 2 66 0.20 24 2,500 0 12 30,000 -6 6 Open-sided Warehouse, 3 75.5 65.6 15 12 6 2 76 0.23 24 2,500 0 12 30,000 -6 7 Equipment Workshop Metal, 3 118.1 98.4 35 20 6 6 118 0.53 24 2,500 0 12 30,000 -6 8 Welding Shop, 3 98.4 65.6 25 12 6 4 98 0.30 24 2,500 0 12 30,000 -6 9 Washing Bay, 3 98.4 39.4 20 98 0.18 24 2,500 0 12 30,000 -6 10 Laboratory, 4 76.9 76.9 15 6 8 2 77 0.27 24 2,500 0 12 30,000 -6 11 Processing Plant, 4 118.1 72.2 20 20 6 2 118 0.39 24 2,500 0 12 30,000 -6 12 Housing & Other Buildings, 5 250 250 8 4 10 2 250 2.87 24 2,500 0 12 30,000 -6 13 Primary Crusher, 5 85 70 100 24 24 6 85 0.27 24 2,500 0 12 30,000 -6 14 Crushed Ore Surge, 5 200 200 12 200 1.84 24 2,500 0 12 30,000 -6 15 Substation, 5 200 200 24 200 1.84 24 2,500 0 12 30,000 -6 16 Grinding Pad, 5 230 70 24 230 0.74 24 2,500 0 12 30,000 -6 17 Lixiviation Pad, 5 445 215 24 445 4.39 24 2,500 0 12 30,000 -6 18 Separation Pad, 5 400 200 24 400 3.67 24 2,500 0 12 30,000 -6 19 Concrete Plant, 5 100 70 24 100 0.32 24 2,500 0 12 30,000 -6 20 Tank Pad, 5 130 130 24 130 0.78 24 2,500 0 12 30,000 -6 21 Water Treatment Plant, 6 160 70 24 160 0.51 24 2,500 0 12 30,000 -6 22 Coneyors, 5 820 10 5 12 10 2 820 0.38 24 2,500 0 12 30,000 -6 23 Explosives Storage 35 35 20 12 10 2 35 0.06 24 2,500 0 12 30,000 -6 24 Incinterator, 5 30 30 15 12 6 2 30 0.04 24 2,500 0 12 30,000 -6 25 Portal Bench Facilities, 5 300 230 20 1 2 6 2 300 3.1 7 24 2,500 0 1 2 30,000 - 6
Notes: 1. Foundation cover only calculated to cover slab. Growth media estimated over entire footprint area 2. MEG 2003, p.3-11 5. Comision 2010 3. MEG 2003, p. 3-12 6. MARN 2007 4. MEG 2003, p. 3-13, p. 7-1 Buildings & Foundation - User Input (cont.) You must fill in ALL green cells and relevant blue cells in this section for each building or facility
Construction Materials Slab Demolition Foundation Cover Growth Media Revegetation
1/17/2011 Copyright © 2004 - 2008 - SRCE Software . All Rights Reserved. Page 1 of 5 Foundations & Buildings Bond Calculation
Project Name: Marlin - Reclamation Plan Foundations & Buildings Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls Growth Slab Cover Media Foundation Breaking Placement Growth Placement Description Wall Slab Demo Equipment Cover Equipment Media Equipment (required) Building Type Type Method Fleet Material Type Fleet Material Type Fleet Seed Mix Mulch Fertilizer Scarify/ Rip? Ripping Fleet (select) (select) (select) (select) (select) (select) (select) (select) (select) (select) (select) (select) (select) 1 Administration, 2 Sm. steel nc 8 in (20 cm) t hBreak & bury Med Excavator Alluvium Small Truck Alluvium Small Truck Mix 1 Straw Mulch Chemical Yes Med Dozer 2 Engineering, 2 Sm. steel nc 8 in (20 cm) t hBreak & bury Med Excavator Alluvium Small Truck Alluvium Small Truck Mix 1 Straw Mulch Chemical Yes Med Dozer 3 Training, 2 Sm. steel nc 8 in (20 cm) t hBreak & bury Med Excavator Alluvium Small Truck Alluvium Small Truck Mix 1 Straw Mulch Chemical Yes Med Dozer 4 Change House, 2 Sm. steel nc 8 in (20 cm) t hBreak & bury Med Excavator Alluvium Small Truck Alluvium Small Truck Mix 1 Straw Mulch Chemical Yes Med Dozer 5 Enclosed Warehouse, 3 Lg. steel nc 8 in (20 cm) t hBreak & bury Med Excavator Alluvium Small Truck Alluvium Small Truck Mix 1 Straw Mulch Chemical Yes Med Dozer 6 Open-sided Warehouse, 3 Sm. steel nc 8 in (20 cm) t hBreak & bury Med Excavator Alluvium Small Truck Alluvium Small Truck Mix 1 Straw Mulch Chemical Yes Med Dozer 7 Equipment Workshop Metal, 3 Lg. steel nc 12 in (30 cm) t Break & bury Med Excavator Alluvium Small Truck Alluvium Small Truck Mix 1 Straw Mulch Chemical Yes Med Dozer 8 Welding Shop, 3 Lg. steel nc 12 in (30 cm) t Break & bury Med Excavator Alluvium Small Truck Alluvium Small Truck Mix 1 Straw Mulch Chemical Yes Med Dozer 9 Washing Bay, 3 Lg. concrete nc 12 in (30 cm) t Break & bury Med Excavator Alluvium Small Truck Alluvium Small Truck Mix 1 Straw Mulch Chemical Yes Med Dozer 10 Laboratory, 4 Sm. steel nc 8 in (20 cm) t hBreak & bury Med Excavator Alluvium Small Truck Alluvium Small Truck Mix 1 Straw Mulch Chemical Yes Med Dozer 11 Processing Plant, 4 Lg. steel nc 12 in (30 cm) t Break & bury Med Excavator Alluvium Small Truck Alluvium Small Truck Mix 1 Straw Mulch Chemical Yes Med Dozer 12 Housing & Other Buildings, 5 Sm. masonry nc 10 in (25 cm) t Break & bury Med Excavator Alluvium Small Truck Alluvium Small Truck Mix 1 Straw Mulch Chemical Yes Med Dozer 13 Primary Crusher, 5 Lg. masonry nc 12 in (30 cm) t Break & bury Med Excavator Alluvium Small Truck Alluvium Small Truck Mix 1 Straw Mulch Chemical Yes Med Dozer 14 Crushed Ore Surge, 5 Lg. concrete nc 12 in (30 cm) t Break & bury Med Excavator Alluvium Small Truck Alluvium Small Truck Mix 1 Straw Mulch Chemical Yes Med Dozer 15 Substation, 5 Lg. concrete nc 12 in (30 cm) t Break & bury Med Excavator Alluvium Small Truck Alluvium Small Truck Mix 1 Straw Mulch Chemical Yes Med Dozer 16 Grinding Pad, 5 Lg. concrete nc 12 in (30 cm) t Break & bury Med Excavator Alluvium Small Truck Alluvium Small Truck Mix 1 Straw Mulch Chemical Yes Med Dozer 17 Lixiviation Pad, 5 Lg. concrete nc 12 in (30 cm) t Break & bury Med Excavator Alluvium Small Truck Alluvium Small Truck Mix 1 Straw Mulch Chemical Yes Med Dozer 18 Separation Pad, 5 Lg. concrete nc 12 in (30 cm) t Break & bury Med Excavator Alluvium Small Truck Alluvium Small Truck Mix 1 Straw Mulch Chemical Yes Med Dozer 19 Concrete Plant, 5 Lg. concrete nc 12 in (30 cm) t Break & bury Med Excavator Alluvium Small Truck Alluvium Small Truck Mix 1 Straw Mulch Chemical Yes Med Dozer 20 Tank Pad, 5 Lg. concrete nc 12 in (30 cm) t Break & bury Med Excavator Alluvium Small Truck Alluvium Small Truck Mix 1 Straw Mulch Chemical Yes Med Dozer 21 Water Treatment Plant, 6 Lg. concrete nc 12 in (30 cm) t Break & bury Med Excavator Alluvium Small Truck Alluvium Small Truck Mix 1 Straw Mulch Chemical Yes Med Dozer 22 Coneyors, 5 Lg. steel nc 12 in (30 cm) t Break & bury Med Excavator Alluvium Small Truck Alluvium Small Truck Mix 1 Straw Mulch Chemical Yes Med Dozer 23 Explosives Storage Sm. steel nc 8 in (20 cm) t hBreak & bury Med Excavator Alluvium Small Truck Alluvium Small Truck Mix 1 Straw Mulch Chemical Yes Med Dozer 24 Incinterator, 5 Sm. steel nc 8 in (20 cm) t hBreak & bury Med Excavator Alluvium Small Truck Alluvium Small Truck Mix 1 Straw Mulch Chemical Yes Med Dozer 25 Portal Bench Facilities, 5 Sm. steel nc 8 in (20 cm) t hBreak & bur y Med Excavato r Alluvium Small Truc k Alluvium Small Truc k Mix 1 Straw Mulch Chemical Yes Med Doze r
Buildings & Foundation - Calculations
Building Volume Calculations
Using Means Heavy Construction Cost Data (2004) calculates cubic feet from building dimensions Estimage slab thickness and wall thickness if not known Assumes that all concrete slabs are reinforced Productivity for crew from Means Heavy Construction Cost Data (2004) adjusted for supervision (addressed in Misc. Costs) and Davis-Bacon Wage Rates
Slab Demolition Calculations
Minimum 1 hr excavator time for slab demolition
Cover Volume Calculation
Foundation area x cover thickness If "Bury in Place" is selected as slab demolition method, cover thickness is adjusted such that total cover (cover + growth media) equals 5 ft (per NV BLM Guidance)
Ripping/Scarifying Calculations
Flat area width = Final flat area ÷ Average long dimensions Number of passes = Flat area width ÷ Grader width Travel distance = Number of passes x Average long dimensions Total hours = (Travel distance ÷ Grader productivity) + (Number of passes x Grader maneuver time)
1/17/2011 Copyright © 2004 - 2008 - SRCE Software . All Rights Reserved. Page 2 of 5 Foundations & Buildings Bond Calculation
Project Name: Marlin - Reclamation Plan Foundations & Buildings Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls Revegetation
Minimum 1 acre revegetation crew time per area
1/17/2011 Copyright © 2004 - 2008 - SRCE Software . All Rights Reserved. Page 3 of 5 Foundations & Buildings Bond Calculation
Project Name: Marlin - Reclamation Plan Foundations & Buildings Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls Building & Foundation Demolition Costs
Uses RS Means Heavy Construction Cost Data for building and wall demolition cost calculations. Uses CAT Handbook for slab breaking production.
Building Demolition Wall Demolition Slab Demolition Total Costs Building Total Total Building Total Total Wall Total Total Total Total Total Description Footprint Building Labor Equipment Demolition Labor Equipment Demolition Labor Equipment Total Slab Labor Equipment Demolition (required) (slab area) Volume Wall Length Wall Area Slab Volume Cost Cost Cost Cost Cost Cost Cost Cost Breaking Cost Cost Cost Costs sqft cu ft ft sq ft c y $ $ $ $$$$ $ $$$$ 1 Administration, 2 2,152 32,275 197 394 40 $4,841 $4,841 $9,682 $5,579 $894 $6,473 $117 $326 $443 $10,537 $6,061 $16,598 2 Engineering, 2 1,292 19,385 144 288 24 $2,908 $2,908 $5,816 $4,078 $654 $4,732 $117 $326 $443 $7,103 $3,888 $10,991 3 Training, 2 2,781 41,712 236 472 52 $6,257 $6,257 $12,514 $6,684 $1,071 $7,755 $117 $326 $443 $13,058 $7,654 $20,712 4 Change House, 2 645 9,668 125 250 12 $1,450 $1,450 $2,900 $3,540 $568 $4,108 $117 $326 $443 $5,107 $2,344 $7,451 5 Enclosed Warehouse, 3 4,303 86,067 262 524 159 $10,328 $10,328 $20,656 $7,420 $1,189 $8,609 $316 $881 $1,197 $18,064 $12,398 $30,462 6 Open-sided Warehouse, 3 4,953 74,292 282 564 183 $11,144 $11,144 $22,288 $7,986 $1,280 $9,266 $363 $1,011 $1,374 $19,493 $13,435 $32,928 7 Equipment Workshop Metal, 3 11,621 406,736 433 2,598 717 $48,808 $48,808 $97,616 $51,492 $8,262 $59,754 $1,406 $3,915 $5,321 $101,706 $60,985 $162,691 8 Welding Shop, 3 6,455 161,376 328 1,312 239 $19,365 $19,365 $38,730 $26,004 $4,172 $30,176 $469 $1,305 $1,774 $45,838 $24,842 $70,680 9 Washing Bay, 3 3,877 0 276 0 239 $469 $1,305 $1,774 $469 $1,305 $1,774 10 Laboratory, 4 5,914 88,704 308 616 110 $13,306 $13,306 $26,612 $8,723 $1,398 $10,121 $211 $587 $798 $22,240 $15,291 $37,531 11 Processing Plant, 4 8,527 170,536 381 762 526 $20,464 $20,464 $40,928 $15,103 $2,423 $17,526 $1,031 $2,871 $3,902 $36,598 $25,758 $62,356 12 Housing & Other Buildings, 5 62,500 500,000 1,000 2,000 772 $75,000 $75,000 $150,000 $33,040 $5,300 $38,340 $1,511 $4,209 $5,720 $109,551 $84,509 $194,060 13 Primary Crusher, 5 5,950 595,000 310 1,860 441 $77,350 $77,350 $154,700 $36,865 $5,915 $42,780 $867 $2,415 $3,282 $115,082 $85,680 $200,762 14 Crushed Ore Surge, 5 40,000 0 800 0 1,481 $2,893 $8,059 $10,952 $2,893 $8,059 $10,952 15 Substation, 5 40,000 0 800 0 2,963 $5,787 $16,119 $21,906 $5,787 $16,119 $21,906 16 Grinding Pad, 5 16,100 0 600 0 1,193 $2,331 $6,493 $8,824 $2,331 $6,493 $8,824 17 Lixiviation Pad, 5 95,675 0 1,320 0 7,087 $13,834 $38,535 $52,369 $13,834 $38,535 $52,369 18 Separation Pad, 5 80,000 0 1,200 0 5,926 $11,573 $32,237 $43,810 $11,573 $32,237 $43,810 19 Concrete Plant, 5 7,000 0 340 0 519 $1,019 $2,839 $3,858 $1,019 $2,839 $3,858 20 Tank Pad, 5 16,900 0 520 0 1,252 $2,448 $6,819 $9,267 $2,448 $6,819 $9,267 21 Water Treatment Plant, 6 11,200 0 460 0 830 $1,617 $4,503 $6,120 $1,617 $4,503 $6,120 22 Coneyors, 5 8,200 41,000 1,660 3,320 304 $4,920 $4,920 $9,840 $65,802 $10,558 $76,360 $597 $1,664 $2,261 $71,319 $17,142 $88,461 23 Explosives Storage 1,225 24,500 140 280 45 $3,675 $3,675 $7,350 $3,965 $636 $4,601 $117 $326 $443 $7,757 $4,637 $12,394 24 Incinterator, 5 900 13,500 120 240 33 $2,025 $2,025 $4,050 $3,398 $545 $3,943 $117 $326 $443 $5,540 $2,896 $8,436 25 Portal Bench Facilities, 5 69,000 1,380,000 1,060 2,120 2,556 $207,000 $207,000 $414,000 $30,019 $4,812 $34,831 $4,990 $13,900 $18,890 $242,009 $225,712 $467,721 3,644,751 $508,841 $508,841 $1,017,682 $309,698 $49,677 $359,375 $54,434 $151,623 $206,057 $872,973 $710,141 $1,583,114
Building & Foundation - Foundation Cover and Growth Media Costs Foundation Cover Growth Media Cover Total Total Topsoil Number of Total Total Total Description Repacement Fleet Number of Total Fleet Labor Equipment Total Cover Topsoil Repacement Fleet Trucks/ Total Fleet Labor Equipment Topsoiling (required) Cover Volume Fleet Productivity Trucks/ Scrapers Hours Cost Cost Cost Volume Fleet Productivity Scrapers Hours Cost Cost Cost cy LCY/hr $ $ $ cy LCY/hr $ $ $ 1 Administration, 2 159 Small Truck 453 2 1.0 $208 $518 $726 161 Small Truck 571 16 1.0 $845 $2,161 $3,006 2 Engineering, 2 96 Small Truck 453 2 1.0 $208 $518 $726 97 Small Truck 571 16 1.0 $845 $2,161 $3,006 3 Training, 2 206 Small Truck 453 2 1.0 $208 $518 $726 210 Small Truck 571 16 1.0 $845 $2,161 $3,006 4 Change House, 2 48 Small Truck 453 2 1.0 $208 $518 $726 48 Small Truck 571 16 1.0 $845 $2,161 $3,006 5 Enclosed Warehouse, 3 319 Small Truck 453 2 1.0 $208 $518 $726 323 Small Truck 571 16 1.0 $845 $2,161 $3,006 6 Open-sided Warehouse, 3 367 Small Truck 453 2 1.0 $208 $518 $726 371 Small Truck 571 16 1.0 $845 $2,161 $3,006 7 Equipment Workshop Metal, 3 861 Small Truck 453 2 2.0 $396 $985 $1,381 855 Small Truck 571 16 1.5 $1,268 $3,241 $4,509 8 Welding Shop, 3 478 Small Truck 453 2 1.0 $229 $570 $799 484 Small Truck 571 16 1.0 $845 $2,161 $3,006 9 Washing Bay, 3 287 Small Truck 453 2 1.0 $208 $518 $726 290 Small Truck 571 16 1.0 $845 $2,161 $3,006 10 Laboratory, 4 438 Small Truck 453 2 1.0 $208 $518 $726 436 Small Truck 571 16 1.0 $845 $2,161 $3,006 11 Processing Plant, 4 632 Small Truck 453 2 1.0 $291 $726 $1,017 629 Small Truck 571 16 1.1 $930 $2,377 $3,307 12 Housing & Other Buildings, 5 4,630 Small Truck 453 2 10.0 $2,123 $5,288 $7,411 4,630 Small Truck 571 16 8.1 $6,847 $17,500 $24,347 13 Primary Crusher, 5 441 Small Truck 453 2 1.0 $208 $518 $726 436 Small Truck 571 16 1.0 $845 $2,161 $3,006 14 Crushed Ore Surge, 5 2,963 Small Truck 453 2 7.0 $1,353 $3,370 $4,723 2,969 Small Truck 571 16 5.2 $4,396 $11,235 $15,631 15 Substation, 5 2,963 Small Truck 453 2 7.0 $1,353 $3,370 $4,723 2,969 Small Truck 571 16 5.2 $4,396 $11,235 $15,631 16 Grinding Pad, 5 1,193 Small Truck 453 2 3.0 $541 $1,348 $1,889 1,194 Small Truck 571 16 2.1 $1,775 $4,537 $6,312 17 Lixiviation Pad, 5 7,087 Small Truck 453 2 16.0 $3,247 $8,088 $11,335 7,083 Small Truck 571 16 12.4 $10,482 $26,791 $37,273 18 Separation Pad, 5 5,926 Small Truck 453 2 13.0 $2,727 $6,792 $9,519 5,921 Small Truck 571 16 10.4 $8,791 $22,470 $31,261 19 Concrete Plant, 5 519 Small Truck 453 2 1.0 $229 $570 $799 516 Small Truck 571 16 1.0 $845 $2,161 $3,006 20 Tank Pad, 5 1,252 Small Truck 453 2 3.0 $583 $1,452 $2,035 1,258 Small Truck 571 16 2.2 $1,860 $4,753 $6,613 21 Water Treatment Plant, 6 830 Small Truck 453 2 2.0 $375 $933 $1,308 823 Small Truck 571 16 1.4 $1,183 $3,025 $4,208
1/17/2011 Copyright © 2004 - 2008 - SRCE Software . All Rights Reserved. Page 4 of 5 Foundations & Buildings Bond Calculation
Project Name: Marlin - Reclamation Plan Foundations & Buildings Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls 22 Coneyors, 5 607 Small Truck 453 2 1.0 $271 $674 $945 613 Small Truck 571 16 1.1 $930 $2,377 $3,307 23 Explosives Storage 91 Small Truck 453 2 1.0 $208 $518 $726 97 Small Truck 571 16 1.0 $845 $2,161 $3,006 24 Incinterator, 5 67 Small Truck 453 2 1.0 $208 $518 $726 65 Small Truck 571 16 1.0 $845 $2,161 $3,006 25 Portal Bench Facilities, 5 5,111 Small Truck 453 2 11.0 $2,352 $5,859 $8,211 5,114 Small Truck 571 16 9.0 $7,608 $19,445 $27,053 37,571 89.0 $18,358 $45,723 $64,081 37,591 72.7 $61,451 $157,079 $218,530
Building & Foundation - Scarifying/Revegetation Costs
Scarifying/ Scarifying/ Total Scarifying/ Ripping Ripping Scarifying/ Revegetation Revegetation Revgetation Total Description Area Long Ripping Labor Equipment Ripping Labor Equipment Material Revegetation (required) Flat Area Dimension Hours Costs Cost Costs Cost Cost Cost Cost acres ft hrs $ $ $$$$$ 1 Administration, 2 0.10 66 1.0 $58 $176 $234 $78 $67 $55 $200 2 Engineering, 2 0.10 70 1.0 $58 $176 $234 $78 $67 $55 $200 3 Training, 2 0.10 70 1.0 $58 $176 $234 $78 $67 $55 $200 4 Change House, 2 0.10 70 1.0 $58 $176 $234 $78 $67 $55 $200 5 Enclosed Warehouse, 3 0.20 66 1.0 $58 $176 $234 $78 $67 $111 $256 6 Open-sided Warehouse, 3 0.20 76 1.0 $58 $176 $234 $78 $67 $111 $256 7 Equipment Workshop Metal, 3 0.50 118 1.0 $58 $176 $234 $78 $67 $277 $422 8 Welding Shop, 3 0.30 98 1.0 $58 $176 $234 $78 $67 $167 $312 9 Washing Bay, 3 0.20 98 1.0 $58 $176 $234 $78 $67 $111 $256 10 Laboratory, 4 0.30 77 1.0 $58 $176 $234 $78 $67 $167 $312 11 Processing Plant, 4 0.40 118 1.0 $58 $176 $234 $78 $67 $222 $367 12 Housing & Other Buildings, 5 2.90 250 2.3 $133 $404 $537 $226 $194 $1,608 $2,028 13 Primary Crusher, 5 0.30 85 1.0 $58 $176 $234 $78 $67 $167 $312 14 Crushed Ore Surge, 5 1.80 200 1.4 $81 $246 $327 $140 $121 $999 $1,260 15 Substation, 5 1.80 200 1.4 $81 $246 $327 $140 $121 $999 $1,260 16 Grinding Pad, 5 0.70 230 0.6 $35 $105 $140 $78 $67 $388 $533 17 Lixiviation Pad, 5 4.40 445 3.3 $191 $580 $771 $343 $295 $2,440 $3,078 18 Separation Pad, 5 3.70 400 2.8 $162 $492 $654 $289 $248 $2,051 $2,588 19 Concrete Plant, 5 0.30 100 1.0 $58 $176 $234 $78 $67 $167 $312 20 Tank Pad, 5 0.80 130 0.7 $41 $123 $164 $78 $67 $444 $589 21 Water Treatment Plant, 6 0.50 160 1.0 $58 $176 $234 $78 $67 $277 $422 22 Coneyors, 5 0.40 820 1.0 $58 $176 $234 $78 $67 $222 $367 23 Explosives Storage 0.10 35 1.0 $58 $176 $234 $78 $67 $55 $200 24 Incinterator, 5 0.10 30 1.0 $58 $176 $234 $78 $67 $55 $200 25 Portal Bench Facilities, 5 3.20 300 2.4 $139 $422 $561 $250 $214 $1,774 $2,238 23.50 31.9 $1,849 $5,610 $7,459 $2,870 $2,466 $13,032 $18,368
1/17/2011 Copyright © 2004 - 2008 - SRCE Software . All Rights Reserved. Page 5 of 5 Foundations & Buildings Bond Calculation Project Name: Marlin - Reclamation Plan Other Demo & Equip Removal Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls Other Demoltion and Equipment Removal - Cost Summary Labor Equipment Materials Totals Other Demolition $4,500 $4,500 $0 $9,000 Equipment Removal $124,476 $414,920 $0 $539,396 TOTALS $128,976 $419,420 $0 $548,396
Color Code Key User Input - Direct Input Direct Input User Input - Pull Down List Pull Down Selection Program Constant (can override) Alternate Input Program Calculated Value Locked Cell - Formula or Reference
Other Demolition Labor Equipment Material Total Unit Cost Unit Cost Unit Cost Cost -1 LOCATION ID Code Quantity Units ($) ($) ($) ($) 1 Diesel Tank, 1 80,000 gal, 1 1 ea 1000 $1,000.00 $2,000 2 Gasoline Tank, 1 2000 gal, 1 1 ea 250 $250.00 $500 3 Lube & Hydraulic Oil 1 ea 250 $250.00 $500 4 Water Tan k 3 ea 1000 $1,000.0 0 $6,000 $4,500 $4,500 $0 $9,000
Notes: 1. MEG 2003, p. 3-12
Equipment & Material Removal Labor Equipment Material Total Unit Cost Unit Cost Unit Cost Cost -1 LOCATION ID Code Quantity Units ($) ($) ($) ($) 1 Mining Equipment Earthmoving, 1 43 ea 1080 3600 $201,240 2 Open Pit Light Vehicles, 1 2 ea 300 1000 $2,600
1/17/2011 Copyright © 2004 - 2008 - SRCE Software . All Rights Reserved. Page 1 of 2 Other Demo & Equip Removal Bond Calculation Project Name: Marlin - Reclamation Plan Other Demo & Equip Removal Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls 3 Underground Large Equipment, 3 28 ea 1080 3600 $131,040 4 Underground Small Equipment, 3 5 ea 300 1000 $6,500 5 Processing Equipment, 2 1,904 tons 24 80 $198,016 6 $124,476 $414,920 $0 $539,396
Notes: 1. MEG 2003, p. 3-19 2. MEG 2003, p. 3-35 3. MEG 2003, Table 3.4-3
1/17/2011 Copyright © 2004 - 2008 - SRCE Software . All Rights Reserved. Page 2 of 2 Other Demo & Equip Removal Bond Calculation
Project Name: Marlin - Reclamation Plan Yards, Etc. Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls Yards, Etc. - Cost Summary Labor Equipment Materials Totals Regrading Cost $97,926 $181,817 N/A $279,743 Cover Placement Cost $76,082 $189,504 N/A $265,586 Growth Media Placement Cost $122,569 $313,279 N/A $435,848 Ripping Cost $4,378 $13,283 N/A $17,661 Subtotal Earthworks $300,955 $697,883 $998,838 Revegetation Cost $8,003 $6,874 $56,892 $71,769 TOTALS $308,958 $704,757 $56,892 $1,070,607
Color Code Key User Input - Direct Input Direct Input User Input - Pull Down List Pull Down Selection Program Constant (can override) Alternate Inpu t Program Calculated Value Locked Cell - Formula or Reference
Yards, Etc. - User Input You must fill in ALL green cells and relevant blue cells in this section for each building or facility Physical Cover (lower layer) Growth Media (upper layer) Average Flat Area Long Regrade Distance Distance Dimension Volume from Slope from Growth from Slope from Description (ripping (calculated Cover Cover Facility to Media Growth Media Facility to (required) ID Code Area distance) elsewhere) Thickness Borrow Area Borrow Area Thickness Stockpile Stockpile -1 acres ft c y in ft % grade in ft % grade 1 Area 5B, 1 14 1,000 77,000 12 2,500 0 6 30,000 -6 2 Office Area, 1 7.4 650 39,000 12 2,500 0 6 30,000 -6 3 Lixiviation, 1 9.9 650 51,000 12 2,500 0 6 30,000 -6 4 Treatment Plant, 1 3.7 500 15,000 12 2,500 0 6 30,000 -6 5 Portal Bench, 1 62 820 22,000 12 2,500 0 6 30,000 -6 6 Camp, 1 5. 6 500 9,000 1 2 2,500 0 6 30,000 - 6
Notes: 1. Comision 2010
Yards, Etc. - User Input (cont.) You must fill in ALL green cells and relevant blue cells in this section for each building or facility Grading Cove r Growth Media Revegetation Cover Growth Growth Media Dozing Grading Cover Placement Media Placement Description Material Equipment Material Equipment Material Equipment (required) Dozing Material Type Fleet Type Fleet Type Fleet Seed Mix Mulch Fertilizer Scarify/ Rip? Ripping Fleet (select) (select) (select) (select) (select) (select) (select) (select) (select) (select) (select) (select) 1 Area 5B, 1 1 Alluvium Small Alluvium Small Truck Alluvium Small Truck Mix 1 Straw Mulch Chemical Yes Med Dozer 2 Office Area, 1 1 Alluvium Small Alluvium Small Truck Alluvium Small Truck Mix 1 Straw Mulch Chemical Yes Med Dozer 3 Lixiviation, 1 1 Alluvium Small Alluvium Small Truck Alluvium Small Truck Mix 1 Straw Mulch Chemical Yes Med Dozer 4 Treatment Plant, 1 1 Alluvium Small Alluvium Small Truck Alluvium Small Truck Mix 1 Straw Mulch Chemical Yes Med Dozer 5 Portal Bench, 1 1 Alluvium Small Alluvium Small Truck Alluvium Small Truck Mix 1 Straw Mulch Chemical Yes Med Dozer 6 Camp, 1 1 Alluvium Small Alluvium Small Truc k Alluvium Small Truc k Mix 1 Straw Mulch Chemical Yes Med Dozer
Yards, Etc. - Calculations
Grading Calculations
Average push distance assumed to be 2/3 of the 600 feet maximum from Catepillar Handbook or 400 feet Material assumed to be loose stockile (1.2 productivity factor) Slope assumed to be 0 to 5% (1.0 productivity factor)
1/17/2011 Copyright © 2004 - 2008 - SRCE Software . All Rights Reserved. Page 1 of 2 Yards, Etc. Bond Calculation
Project Name: Marlin - Reclamation Plan Yards, Etc. Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls Cover Volume Calculation
Yard area x cover thickness
Ripping/Scarifying Calculations
Flat area width = Final flat area ÷ Average long dimensions Number of passes = Flat area width ÷ Grader width Travel distance = Number of passes x Average long dimensions Total hours = (Travel distance ÷ Grader productivity) + (Number of passes x Grader maneuver time) Minimum 1 hr ripping/scarifying per area
Revegetation
Minimum 1 acre revegetation crew time per area
Yards, Etc. - Regrading Costs
Productivity = Dozer Productivity x Grade Correction x Density Correction x Operator (0.75) x Material x Visibility x Job Efficiency (0.83) x (Slot/Side-by-Side) Dozing Uncorrected Total Total Description Regrading Distance (see Dozer Grade Density Total Hourly Total Dozer Labor Equipment Total (required) Volume above) Productivity Correction Dozing Material Correction Productivity Hours Cost Cost Regrading Cost cy ft cy/h r cy/h r hr $ $ $ 1 Area 5B, 1 77,000 400 213 1.00 1.20 0.79 126 611.0 $35,383 $65,695 $101,078 2 Office Area, 1 39,000 400 213 1.00 1.20 0.79 126 310.0 $17,952 $33,331 $51,283 3 Lixiviation, 1 51,000 400 213 1.00 1.20 0.79 126 405.0 $23,454 $43,546 $67,000 4 Treatment Plant, 1 15,000 400 213 1.00 1.20 0.79 126 119.0 $6,891 $12,795 $19,686 5 Portal Bench, 1 22,000 400 213 1.00 1.20 0.79 126 175.0 $10,134 $18,816 $28,950 6 Camp, 1 9,000 400 213 1.00 1.20 0.79 126 71.0 $4,112 $7,634 $11,746 213,000 1691.0 $97,926 $181,817 $279,743
Yards, Etc. - Cover and Growth Media Costs Cover Growth Media Topsoil Number of Total Total Topsoil Number of Total Total Total Description Cover Repacement Fleet Trucks/ Total Fleet Labor Equipment Total Cover Repacement Fleet Trucks/ Total Fleet Labor Equipment Topsoiling (required) Volume Fleet Productivity Scrapers Hours Cost Cost Cost Topsoil Volume Fleet Productivity Scrapers Hours Cost Cost Cost cy LCY/hr $ $ $ cy LCY/hr $ $ $ 1 Area 5B, 1 22,587 Small Truck 453 2 50.0 $10,387 $25,872 $36,259 11,293 Small Truck 571 16 19.8 $16,737 $42,779 $59,516 2 Office Area, 1 11,939 Small Truck 453 2 26.0 $5,495 $13,688 $19,183 5,969 Small Truck 571 16 10.5 $8,876 $22,686 $31,562 3 Lixiviation, 1 15,972 Small Truck 453 2 35.0 $7,348 $18,302 $25,650 7,986 Small Truck 571 16 14.0 $11,834 $30,248 $42,082 4 Treatment Plant, 1 5,969 Small Truck 453 2 13.0 $2,748 $6,844 $9,592 2,985 Small Truck 571 16 5.2 $4,396 $11,235 $15,631 5 Portal Bench, 1 100,027 Small Truck 453 2 221.0 $45,962 $114,480 $160,442 50,013 Small Truck 571 16 87.6 $74,048 $189,263 $263,311 6 Camp, 1 9,035 Small Truck 453 2 20.0 $4,142 $10,318 $14,460 4,517 Small Truck 571 16 7.9 $6,678 $17,068 $23,746 165,529 365.0 $76,082 $189,504 $265,586 82,763 145.0 $122,569 $313,279 $435,848
Yards, Etc. - Scarifying/Revegetation Costs
Scarifying/ Scarifying/ Total Scarifying/ Ripping Ripping Scarifying/ Revegetation Revegetation Revgetation Total Description Area Long Ripping Labor Equipment Ripping Labor Equipment Material Revegetation (required) Flat Area Dimension Hours Costs Cost Costs Cost Cost Cost Cost acres ft hrs $ $ $ $ $ $ $ 1 Area 5B, 1 14.0 1,000 10.3 $596 $1,810 $2,406 $1,092 $938 $7,763 $9,793 2 Office Area, 1 7.4 650 5.5 $319 $966 $1,285 $577 $496 $4,104 $5,177 3 Lixiviation, 1 9.9 650 7.3 $423 $1,283 $1,706 $772 $663 $5,490 $6,925 4 Treatment Plant, 1 3.7 500 2.8 $162 $492 $654 $289 $248 $2,051 $2,588 5 Portal Bench, 1 62.0 820 45.5 $2,635 $7,994 $10,629 $4,836 $4,154 $34,379 $43,369 6 Camp, 1 5.6 500 4.2 $243 $738 $981 $437 $375 $3,105 $3,917 102.6 75.6 $4,378 $13,283 $17,661 $8,003 $6,874 $56,892 $71,769
1/17/2011 Copyright © 2004 - 2008 - SRCE Software . All Rights Reserved. Page 2 of 2 Yards, Etc. Bond Calculation
Project Name: Marlin - Reclamation Plan Sediment & Drainage Control Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls
Drainage Control - Cost Summary
Labor Equipment Materials Totals Runon Diversion Ditches $20,671 $33,054 N/A $53,725 Sed Pond Construct/Regrade $6,557 $7,668 N/A $14,225 Liner Installation $30,274 $18,731 $15,246 $64,251 Sed Pond Cove r $5,289 $13,169 N/A $18,458 Scarify/Rip $464 $862 N/A $1,326 Subtotal Earthworks $63,25 5 $73,484 $15,24 6 $151,98 5 Diversion Ditch Revegetation $2,082 $1,790 $14,640 $18,512 Sediment Pond Revegetation $780 $671 $5,214 $6,665 Subtotal Revegetation $2,86 2 $2,461 $19,854 $25,17 7 TOTALS $66,117 $75,945 $35,100 $177,162
Color Code Ke y User Input - Direct Input Direct Inpu t User Input - Pull Down List Pull Down Selection Program Constant (can override) Alternate Inpu t Program Calculated Value Locked Cell - Formula or Reference
Diversion Ditches - User Input
Diversions Ditches Revegetation Ditch Ditch Excavating Description Diversion Diversion Bottom Sideslope Excavating Equipment (required) ID Code Length Depth Width Angle Material Fleet Seed Mix Mulch Fertilizer -1 ft ft ft _H:1V (select) (select) (select) (select) (select) 1 TSF Perimeter (MEG 2003, p. 3-14) 17000 3 3 2.5 1 Medium Mix 1 Straw Mulch Chemical 2 Waste Rock Dump Perimeter (Comision 2010) 11000 3 3 2.5 1 Medium Mix 1 Straw Mulch Chemical 3 Marlin Pit (Comision 2010) 6000 3 3 2.5 1 Medium Mix 1 Straw Mulch Chemical 4 Cochise Pit (Comision 2010) 1600 3 3 2.5 1 Medium Mix 1 Straw Mulch Chemical 5 Marlin Pit Dewater (Comision 2010) 500 35 5 0.1 0.6 Medium None None None 6 TSF II Perimeter 17000 3 3 2.5 1 Medium Mix 1 Straw Mulch Chemical 7 Waste Rock Dump Contour (Comision 2010) 16400 2 3 1.0 0.6 Small Mix 1 Straw Mulch Chemical
Sediment/Evaporation Pond Construction/Removal - User Input
Sediment Ponds Regrade Distance Slope from Final Area Volume Cover Volume from Pond to Description Pond/Berm Berm Crest Sideslope (if calculated (if calculated (if calculated Cover Cover Cover (required) ID Code Pond Width Length Height Width Angle elsewhere) elsewhere) elsewhere) Thickness Borrow Borrow -1 ft ft ft ft _H:1V acres c y cy in ft % grade 1 Marlin Pit West 100 225 10 3 2.5 12 2,500 -6 2 Marlin Pit East 100 225 10 3 2.5 12 2,500 -6 3 Cochise Pit 100 225 10 3 2.5 12 2,500 -6 4 TSF Perimeter, 2 each 200 600 10 3 2.5 12 2,500 -6 5 TSF II Perimeter, 2 each 200 600 10 3 2. 5 12 2,500 - 6
Sediment/Evaporation Pond Construction/Removal - User Input (cont.) Sediment Ponds Cover Revegetation Ripping/Scarifying Cover Excavating Placement Excavating Equipment Liner Cover Equipment Flat Area Scarify/ Ripping Description Material Material Type Fleet Type Material Type Fleet Seed Mix Mulch Fertilizer Scarify/ Rip? Fleet (select) (select) (select) (select) (select) (select) (select) (select) (select) (select) (select) 1 Marlin Pit West 1 Alluvium Small None Alluvium Small Truck Mix 1 Straw Mulch Chemical Yes Small Dozer 2 Marlin Pit East 1 Alluvium Small 60 mil HDPE Alluvium Small Truck Mix 1 Straw Mulch Chemical Yes Small Dozer 3 Cochise Pit 1 Alluvium Small None Alluvium Small Truck Mix 1 Straw Mulch Chemical Yes Small Dozer 4 TSF Perimeter, 2 each 1 Alluvium Small None Alluvium Small Truck Mix 1 Straw Mulch Chemical Yes Small Dozer 5 TSF II Perimeter, 2 each 1 Alluvium Small None Alluvium Small Truc k Mix 1 Straw Mulch Chemical Yes Small Doze r
1/17/2011 Copyright © 2004 - 2008 - SRCE Software . All Rights Reserved. Page 1 of 3 Sediment & Drainage Control Bond Calculation
Project Name: Marlin - Reclamation Plan Sediment & Drainage Control Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls
Drainage Control - Calculations
Diversion Ditch Volume Calculation Sediment/Evaporation Pond Construction Calculation
a # b ! d 2
Figure 2 - Sediment Ponds
1) Assume balanced cut-to-fill for berm construction 2) Include cost for liner, if required. Figure 1 - Diversion Ditch Area & Volume Calculation 3) Include line items for removal, if necessary. 4) Assume 20% swell for excavations 1) Assume 20% swell for excavations 5) Minimum 1 hr ripping/scarifying per area 2) Assumes heavy duty trenching bucket is used 6) Minimum 1 acre revegetation crew time per area
Diversion Ditches - Excavation Costs
Diversion Diversion Total Diversion Corrected Ditch Ditch Diversion Ditch Excavator Total Labor Equipment Ditch Description Volume Productivity Hours Cost Cost Cost LCY LCY/hr $ $ $ 0 1 TSF Perimeter (MEG 2003, p. 3-14) 23,800 139 171.0 $10,128 $16,712 $26,840 2 Waste Rock Dump Perimeter (Comis 15,400 360 43.0 $2,547 $4,202 $6,749 3 Marlin Pit (Comision 2010) 8,400 360 23.0 $1,362 $2,248 $3,610 4 Cochise Pit (Comision 2010) 2,240 360 6.0 $355 $586 $941 5 Marlin Pit Dewater (Comision 2010) 944 360 3.0 $178 $293 $471 6 TSF II Perimeter 23,800 360 66.0 $3,909 $6,450 $10,359 7 Waste Rock Dump Contour (Comisi o 10,933 299 37.0 $2,192 $2,563 $4,755
85,517 349.0 $20,671 $33,054 $53,725
Diversion Ditches - Revegetation Costs
Revegetation Revegetation Revgetation Total Labor Equipment Material Revegetation Description Surface Area Cost Cost Cost Cost acres $ $ $ $ 1 TSF Perimeter (MEG 2003, p. 3-14) 7.50 $585 $503 $4,159 $5,247 2 Waste Rock Dump Perimeter (Comis 4.80 $374 $322 $2,662 $3,358 #REF! 3 Marlin Pit (Comision 2010) 2.60 $203 $174 $1,442 $1,819 0 4 Cochise Pit (Comision 2010) 0.70 $78 $67 $388 $533 0 5 Marlin Pit Dewater (Comision 2010) 0.90 2.5 6 TSF II Perimeter 7.50 $585 $503 $4,159 $5,247 0 7 Waste Rock Dump Contour (Comisi o 3.30 $257 $221 $1,830 $2,308 0 27.30 $2,082 $1,790 $14,640 $18,512
Sediment/Evaporation Ponds - Construction/Regrading Costs
1/17/2011 Copyright © 2004 - 2008 - SRCE Software . All Rights Reserved. Page 2 of 3 Sediment & Drainage Control Bond Calculation
Project Name: Marlin - Reclamation Plan Sediment & Drainage Control Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls
Productivity = Dozer Productivity x Grade Correction x Density Correction x Operator (0.75) x Material x Visibility x Job Efficiency (0.83) Earthwork Line r Dozing Uncorrected Total Total Total Total Total Description Regrading Distance Dozer Grade Density Excavating Corrected Total Dozer Labor Equipment Total Constr/ Labor Equipment Material Total Liner (required) Volume (see above) Productivity Correction Correction Material Productivity Hours Cost Cost Regrading Cost Cost Cost Cost Cost LCY ft LCY/h r LCY/h r hr $ $ $ $ $ $ $ 1 Marlin Pit West 2,800 100 627 1.00 0.79 1.00 308 9.1 $539 $630 $1,169 2 Marlin Pit East 2,800 100 627 1.00 0.79 1.00 308 9.1 $539 $630 $1,169 $30,274 $18,731 $15,246 $64,251 3 Cochise Pit 2,800 100 627 1.00 0.79 1.00 308 9.1 $539 $630 $1,169 4 TSF Perimeter, 2 each 7,467 200 365 1.00 0.79 1.00 179 41.7 $2,470 $2,889 $5,359 5 TSF II Perimeter, 2 each 7,467 200 365 1.00 0.79 1.00 179 41.7 $2,470 $2,889 $5,359 23,334 110.7 $6,557 $7,668 $14,225 $30,274 $18,731 $15,246 $64,251
Sediment/Evaporation Ponds - Cover Costs Cover Placement Total Cover Cover Number of Total Total Total Cover Description Cover Placement Fleet Trucks/ Fleet Labor Equipment Placement (required) Volume Fleet Productivity Scrapers Hours Cost Cost Cost cy LCY/hr $ $ $ 1 Marlin Pit West 807 Small Truck 453 2 1.8 $375 $933 $1,308 2 Marlin Pit East 807 Small Truck 453 2 1.8 $375 $933 $1,308 3 Cochise Pit 807 Small Truck 453 2 1.8 $375 $933 $1,308 4 TSF Perimeter, 2 each 4,517 Small Truck 453 2 10.0 $2,082 $5,185 $7,267 5 TSF II Perimeter, 2 each 4,517 Small Truck 453 2 10.0 $2,082 $5,185 $7,267 11,455 25.4 $5,289 $13,169 $18,458
Sediment/Evaporation Ponds - Revegetation Costs
Scarifying / Scarifying / Total Scarifying/ Ripping Ripping Scarifying/ Revegetation Revegetation Revgetation Total Surface Long Area Ripping Equipment Labor Ripping Labor Equipment Material Revegetation Description Area Ripping Distance Width Hours Cost Costs Costs Cost Cost Cost Cost acres ft ft hrs $$$$ $ $ $ 1 Marlin Pit West 0.80 218 100 0.5 $108 $58 $166 $78 $67 $444 $589 2 Marlin Pit East 0.80 218 100 0.5 $108 $58 $166 $78 $67 $444 $589 3 Cochise Pit 0.80 218 100 0.5 $108 $58 $166 $78 $67 $444 $589 4 TSF Perimeter, 2 each 3.50 610 200 2.5 $269 $145 $414 $273 $235 $1,941 $2,449 5 TSF II Perimeter, 2 each 3.50 610 200 2.5 $269 $145 $414 $273 $235 $1,941 $2,449 9.40 1,873 6.5 $862 $464 $1,326 $780 $671 $5,214 $6,665
1/17/2011 Copyright © 2004 - 2008 - SRCE Software . All Rights Reserved. Page 3 of 3 Sediment & Drainage Control Bond Calculation Project Name: Marlin - Reclamation Plan Waste Disposal Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls
Waste Disposal - Cost Summary Labor Equipment Fees Totals Solid Waste - On Site $0 $0 N/A $0 Solid Waste - Off Site $0 Hazardous Materials $0 $0 Hydrocarbon Contaminated Soils $9,196 $0 $91,245 $100,441 TOTAL S $9,196 $0 $91,245 $100,441
Color Code Ke y User Input - Direct Input Direct Input User Input - Pull Down List Pull Down Selection Program Constant (can override) Alternate Inpu t Program Calculated Value Locked Cell - Formula or Reference
Waste Disposal - User Input - Solid Waste On-Site Off-Site Distance Slope to Number Months Waste Disposal to On-Site Disposal of Dumpster Description ID Code Type Method Quantity Disposal (on-site) Trucks Rental -1 (select) (select) cy ft % grade (user override) months
Notes: 1. Use Landfills Sheet for landfill reclamation
Waste Disposal - User Input - Hazardous Materials
One Wa y Vacuum Travel One Way Waste Container Truck Liquid Soild Distance to Travel Time to Description ID Code Type Type Size Quantity Quantity Disposal Site Disposal Site -1 (select) (select) (select) gallons cy mi hr 1
Notes: 1. Use Other Demo & Equip Removal Sheet for tank removal
1/17/2011 Copyright © 2004 - 2008 - SRCE Software . All Rights Reserved. Page 1 of 3 Waste Disposal Bond Calculation Project Name: Marlin - Reclamation Plan Waste Disposal Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls
Waste Disposal - User Input - Hydrocarbon Contaminated Soils
Travel Distance to Waste Disposal Offsite Description ID Code Type Method Quantity Disposal -1 (select) (select) cy mi 1 Airstrip Pavement Other On site 7,000 2,500
Notes: 1. Use Yards or Landfills Sheets for bioremediation facility reclamation
Waste Disposal - Assumptions & Calculations
Solid Waste Disposal
Off site disposal assumes use of average rolloff dumpster [30 cy (m3), 10 ton (tonne)] On site disposal assumes use of small loader/truck fleet for haulage Average density for on site disposal = 2,600 lb/cy (1,540 kg/m3) For on site disposal only 1 truck is required unless total truck hours > 8, only 2 trucks unless total truck hours are > 16
Hazardous Materials Disposal
Assumes all hazardous materials are known Enter EITHER solid or liquid quantity each line. If container type = 55 gallon drum then solid waste hauling costs apply Average density for solids assumed to be 2,600 lb/cy (1,540 kg/m3) Average density for liquids assumed to be weight of water 2,600 lb/cy (1,540 kg/m3) Vacuum truck sizes: small = 2,200 gal (~8,300 litres), large = 5,000 gal (~19,000 litres) Vacuum truck on site for 4 hours for each load
Hydrocarbon Contaminated Soils Disposal
Assumes all hazardous materials are known On site disposal assumes biopad treatment Exavation productivity =45 C.Y./hr (Means Heavy Construction, 2006: 02315-424-0360)
Waste Disposal - Solid Waste Disposal
1/17/2011 Copyright © 2004 - 2008 - SRCE Software . All Rights Reserved. Page 2 of 3 Waste Disposal Bond Calculation Project Name: Marlin - Reclamation Plan Waste Disposal Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls
Number Total Total of Off Site Onsite Total Offsite Total Total Waste Waste Dumpster Fleet Number of Fleet Costs Labor Equipment Disposal Description Volume Loads Productivity Trucks Hours (incl fees) Cost Cost Cost cy LCY/hr $ $ $ $ $0 $0 $0 $0
Waste Disposal - Hazardous Materials Disposal
Total Liquid Solid Number Tons Hazardous Waste Waste of Truck of Pick-up Transport Disposal Material Description Volume Volume Loads Waste Fees Fees Fees Cost gallons cy Tons $ $ $ $ 1 $0 $0 $0 $0
Waste Disposal - Hydrocarbon Contaminated Soils
Total Total Total Total Waste Description Fleet Treatment Transport Disposal Labor Equipment Disposal (required) Quantity Hours Cost Fees Fees Cost Cost Cost cy $ $ $ $ $ $ 1 Airstrip Pavement 7,000 $91,245 $9,196 $100,441 7,000 $91,245 $0 $0 $9,196 $0 $100,441
1/17/2011 Copyright © 2004 - 2008 - SRCE Software . All Rights Reserved. Page 3 of 3 Waste Disposal Bond Calculation Project Name: Marlin - Reclamation Plan Misc. Costs Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls
Miscellaneous Cost Summary Labor Equipment Materials Totals Fence Removal $20,850 $8,450 N/A $29,300 Fence Installation $90,200 $22,400 $760,000 $872,600 Pipe & Culvert Removal $260,100 $105,300 N/A $365,400 Powerlines $635,000 N/A N/A $635,000 Substations/Tranformers $58,500 N/A N/A $58,500 Rip-rap, rock lining, gabions $5,014,781 $2,325,798 $73,622 $7,414,201 Other Costs $177,375 $64,234 $520,581 $762,190 TOTAL S $6,256,806 $2,526,182 $1,354,203 $10,137,191
Color Code Ke y User Input - Direct Input Direct Inpu t User Input - Pull Down List Pull Down Selection Program Constant (can override) Alternate Inpu t Program Calculated Value Locked Cell - Formula or Reference
Fence Removal You must fill in ALL green and blue cells
Input Costs Description Labo r Equipment Total (required) Length Type Cost Cost Cost -1 ft (select type) $ $ $ 1 Perimter Fence, 1 9,185 Chain link 8-10 ft (2.5-3 m $20,850 $8,450 $29,300 2 $20,850 $8,450 $29,300
Notes: 1.MEG 2003, p. 3-13
Fence Installation You must fill in ALL green and blue cells
Input Costs Description Labor Equipment Material Total (required) Length Type Cost Cost Cost Cost -1 ft (select type) $ $ ($) $ 1 Tailings Pond,1 19,000 Chain link 8-10ft (2.5-3 m $85,690 $21,280 $722,000 $828,970 2 Marlin East Sediment Pond, 2 1,000 Chain link 8-10ft (2.5-3 m $4,510 $1,120 $38,000 $43,630
1/17/2011 Copyright © 2004 - 2008 - SRCE Software . All Rights Reserved. Page 1 of 3 Misc. Costs Bond Calculation Project Name: Marlin - Reclamation Plan Misc. Costs Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls
$90,200 $22,400 $760,000 $872,600
Notes: 1. Comision 2010 2. Sediment & Drainage Control Spreadsheet
Pipe and Culvert Removal You must fill in ALL green and blue cells
Input Costs Description Labo r Equipment Total (required) Length Type Cost Cost Cost -1 ft (select type) $ $ $ 1 Pipe, 1 45,000 12 in (30 cm ) Diameter $260,100 $105,300 $365,400 $260,100 $105,300 $365,400
Notes: 1. Comision 2010
Powerline and Substation Removal You must fill in ALL green and blue cells
Input Costs Description Powerline Powerline Number of Powerline Substation (required) Length Type Substations Removal Removal Total Cost -1 miles (select) # $ $ $ 1 Power Line, 1 15.00 Double Pole 2 $600,000 $39,000 $639,000 2 Water Supply Well PSA-1, 2 1.00 Single Pole 1 $35,000 $19,500 $54,500 $635,000 $58,500 $693,500
Notes: If substation owned by operator, use Other Demo & Equipment Removal sheet User may need to add line items in Foundations & Buildings for substation slab demolition and fence removal 1. MEG 2003, p. 3-18 2. Comision 2010
Rip-Rap & Rock Lining You must fill in ALL green and blue cells
1/17/2011 Copyright © 2004 - 2008 - SRCE Software . All Rights Reserved. Page 2 of 3 Misc. Costs Bond Calculation Project Name: Marlin - Reclamation Plan Misc. Costs Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls
Input Costs Description Labo r Equipment Material Total (required) Area Type Cost Cost Cost Cost -1 S.Y. (select type) $ $ $ $ 1 TSF Perimeter Ditch, 1 9,000 Rip-Rap 18 in min thick, $341,730 $158,490 $0 $500,220 2 WRF Ditch, 1 23,000 Rip-Rap 18 in min thick, 873310 405030 $0 $1,278,340 3 Marlin Pit Ditch, 1 14,000 Rip-Rap 18 in min thick, 531580 246540 $0 $778,120 4 Cochise Pit Ditch, 1 3,600 Rip-Rap 18 in min thick, 136692 63396 $0 $200,088 5 Marlin Pit West Sediment Pond, 1 80 Rip-Rap 3/8 to 1/4 C.Y. p 2013 934 $1,124 $4,071 6 Marlin Pit East Sediment Pond, 1 80 Rip-Rap 3/8 to 1/4 C.Y. p 2013 934 $1,124 $4,071 7 Cochise Pit Sediment Pond. 1 80 Rip-Rap 3/8 to 1/4 C.Y. p 2013 934 $1,124 $4,071 8 TSF Dam Face, 1 70,000 Rip-Rap 18 in min thick, 2657900 1232700 $0 $3,890,600 9 TSF Dam Spillway, 1 5,000 Rip-Rap 3/8 to 1/4 C.Y. p 125800 58350 $70,250 $254,400 10 TSF II Perimeter Ditch 9,000 Rip-Rap 18 in min thick, 341730 158490 $0 $500,220 $5,014,781 $2,325,798 $73,622 $7,414,201
Notes: 1. Comision 2010
Other Costs Description Labor Equipment Material (required) Quantity Units Unit Cost Unit Cost Unit Cost Total Cost -1 ($) ($) ($) $ 1 Open Pit Lime Treatment 650 tons 1.50 5.00 143 $96,850 2 Marlin Pit Dewater Trench Culvert, 1 600 feet 7.50 25 $19,500 3 Underground Lime Treatment 500 tons 3.00 10.00 143 $78,000 4 Underground Dewater Pump & Pip e 1 each 27,000.00 25,000.00 65,000 $117,000 5 Waste Rock Dump Contour Ditch C 98,400 square feet 1.00 0.01 2 $255,840 6 Marlin Pit Dewater Pump & Pip e 1 each 45,000.00 30,000.00 120,000 $195,000 $177,375 $64,234 $520,581 $762,190
Notes: 1. Comision 2010
1/17/2011 Copyright © 2004 - 2008 - SRCE Software . All Rights Reserved. Page 3 of 3 Misc. Costs Bond Calculation Project Name: Marlin - Reclamation Plan Monitoring Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls
Reclamation Monitoring & Maintenance - Cost Summary Materials/ Labor Equipment Laboratory Totals Revegetation Maintenance $44,442 $38,175 $172,355 $254,972 Reclamation Monitoring $549,792 $12,043 $561,835 Subtotal Reclamation Monitorin g $594,23 4 $50,21 8 $172,35 5 $816,80 7 Water Quality Monitoring $267,286 $68,726 $366,600 $702,612 TOTAL MONITORING $861,520 $118,944 $538,955 $1,519,419
Reclamation Maintenance
Total % Area Area Revegetation Requiring Requiring Description Surface Area (1) Reseeding Seed Mix Reseeding Seed Labor Equipment Totals acres (select) acres $/acres $/acres $/acres $ Revegetation Maintenance 569.77 100% Mix 1 569.77 $302.50 $78.00 $67.00 Labor $44,442 Equipment $38,175 Materials $172,355 Cost/Acre $447.50 Subtotal $254,972
Notes: 1) Surface area is NOT the same as footprint disturbance area typically used for permitting purposes.
Reclamation Monitoring Number of Description Hrs/Day Days/Year Years Rate 1/17/2011 Copyright © 2004 - 2008 - SRCE Software . All Rights Reserved. Page 1 of 4 Monitoring Bond Calculation Project Name: Marlin - Reclamation Plan Monitoring Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls
$/hr Field Work Field Geologist/Engineer 8 20 15 $95 $229,080 Range Scientist 8 20 15 $95 $229,080 Reporting Field Geologist/Engineer 8 4 15 $95 $45,816 Range Scientist 8 4 15 $95 $45,816 Subtotal $549,792 Travel Hrs/Trip Trips/Year Years Truck Cost hr $/hr Travel 8 4 15 $25.09 $12,043 Subtotal $12,043
Total Reclamation Monitoring $561,835
Notes:
Ground & Surface Water Monitoring Field work Man-hours/ Description No. of staff Hrs/Day Days/event Events/Year No. Years year Rate Cost $/h r $ Field Tech/Sampler 2 8 4 4 15 256 $63.64 $244,378 Pickup Truck 1 15 256 $17.34 $66,586 Pump (purchased) 1 $2,140 $2,140 Subtotal Field Work $313,104 1/17/2011 Copyright © 2004 - 2008 - SRCE Software . All Rights Reserved. Page 2 of 4 Monitoring Bond Calculation Project Name: Marlin - Reclamation Plan Monitoring Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls
Water and Rock Sample Analysis Description Samples Events/Yea r No. Years Analysis Cost Supplies Lab Cost Material Cost Cost # $/sample $/sample $ $ $ Water Analysis (Profile I) (1) 15 4 15 $325.00 $5.00 $292,500.00 $4,500.00 $297,000 ABA + S speciation 4 4 15 $125.00 $5.00 $30,000.00 $1,200.00 $31,200 WAD Cyanide in water 2 12 15 $35.00 $5.00 $12,600.00 $1,800.00 $14,400 Leach Test (MWMP) w/ analysis 2 2 15 $395.00 $5.00 $23,700.00 $300.00 $24,000
Subotal Sample Analysis $366,600
Reporting Man-hours/ Description Hrs/Event Rate Events/Year yea r No. Years Cost $/h r $ Field Geologist/Enginee r 4 $95.45 4 16 15 $22,908 Subtotal Reporting $22,908
Total Water Quality Monitoring $702,612
Notes: 1/17/2011 Copyright © 2004 - 2008 - SRCE Software . All Rights Reserved. Page 3 of 4 Monitoring Bond Calculation Project Name: Marlin - Reclamation Plan Monitoring Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls
1/17/2011 Copyright © 2004 - 2008 - SRCE Software . All Rights Reserved. Page 4 of 4 Monitoring Bond Calculation Project Name: Marlin - Reclamation Plan Date of Submittal: 1 July 2010 Constr. Mgmt File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls
Construction Management & Road Maintenance - Cost Summary Labor Equipment Materials Totals Construction Mana gement $1,775,232 $499,392 N/A $2,274,624 Construction Support $356,609 $356,609 Road Maintenance $224,100 $423,727 $7,500 $655,327 TOTAL CONSTRUCTION MANAGEMENT $1,999,332 $1,279,728 $7,500 $3,286,560
Construction Management Construction Management Staf f Hours/ Number of Supervisor Labor Equipment Description Duration Month Supervisors Rate Cost Cost (1) Totals mo. hr. $/hr $ $ $ Active Reclamation 12.00 120 5 $62 $443,808 $124,848 $568,656 Monitoring & Maintenance 180.00 120 1 $62 $1,331,424 $374,544 $1,705,968 Total Staff $1,775,232 $499,392 $2,274,624
Construction Management Support Number of Rental Generator Equipment Description Duration Units Rate Cost Cost (1) Totals mo. $/mo $/mo $ $ Temporary Office Rental 180.00 1 $149 $1,656 $324,929 $324,929 Temporary Toilets 180.00 1 $176 $31,680 $31,680 Total Support $356,609 $356,609
Notes: Office rental assumes only 1 generator required for every 4 trailers
Total Construction Management $2,631,233 1/17/2011 Copyright © 2004 - 2008 - SRCE Software . All Rights Reserved. Page 1 of 2 Constr. Mgmt Bond Calculation Project Name: Marlin - Reclamation Plan Date of Submittal: 1 July 2010 Constr. Mgmt File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls
Road Maintenance Hours/ Labor Equipment Description Fleet Size Number Duration Month Cost Cost Totals (select) mo. hr. $ $ $ Active Reclamation Water Truck Small 1.00 12.0 60 $32,256 $60,948 $93,204 Grader Small 1.00 12.0 60 $42,444 $80,294 $122,738 Monitoring & Maintenance Water Truck Small 1.00 180.0 8 $64,512 $121,896 $186,408 Grader Small 1.00 180.0 8 $84,888 $160,589 $245,477 Gallons/ Days/ Cost/ Description Day Month Duration Gallon Totals (select) mo. $ $ Water Fees Water Fees 5000 25 6.0 $0.010 $7,500 Total Project Maintenance $224,100 $423,727 $655,327
Notes: 1) Supervisor equipment = pickup truck
1/17/2011 Copyright © 2004 - 2008 - SRCE Software . All Rights Reserved. Page 2 of 2 Constr. Mgmt Project Name: Marlin - Reclamation Plan Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls
Color Code Ke y User Input - Direct Input Direct Input User Input - Pull Down List Pull Down Selection Standardized Data (imported from data file) Standardized Data Program Calculated Value Locked Cell - Formula or Reference
ZONE ADJUSTMENTS Churchill, Douglas, Elko, Eureka, Humboldt, Lander, Lyon, Mineral, Pershing, Storey, Washoe, and White Pine Cost Basis/Project Region Northern Nevada Counties Power Equipment Operators 151 to 300 miles $3.00 Truck Drivers 151 to 300 miles $3.00 Laborers < 50 miles $0.00 INDIRECT COSTS FICA/Medicare (%) 7.65% Unemployment (%) 3.00% Workman's Compensation (%) 9.77%
HOURLY LABOR RATE TABLE Davis-Bacon Zone Hourl y FICA / Unemploym Workman's EQUIPMENT TYPE (1) OR Group Base Rate Fringe Adjustment Wage Medicare ent Comp Total JOB DESCRIPTION ($/hr) ( $/hr) ( $/hr) ( $/hr) ( $/hr) ( $/hr) ( $/hr) ( $/hr) EQUIPMENT OPERATORS ($/hr) (2) Bulldozers D6R Group 8 $29.55 $15.54 $3.00 $48.09 $3.68 $1.44 $4.70 $57.91 D7R Group 8 $29.55 $15.54 $3.00 $48.09 $3.68 $1.44 $4.70 $57.91 D8R Group 8 $29.55 $15.54 $3.00 $48.09 $3.68 $1.44 $4.70 $57.91 D9R Group 8 $29.55 $15.54 $3.00 $48.09 $3.68 $1.44 $4.70 $57.91 D10R Group 8 $29.55 $15.54 $3.00 $48.09 $3.68 $1.44 $4.70 $57.91 D11R Group 8 $29.55 $15.54 $3.00 $48.09 $3.68 $1.44 $4.70 $57.91 Motor Graders 14G/H Group 10A $30.41 $15.54 $3.00 $48.95 $3.74 $1.47 $4.78 $58.95 16G/H Group 10 A $30.41 $15.54 $3.00 $48.95 $3.74 $1.47 $4.78 $58.95 Track Excavators 320C Group 11 $30.65 $15.54 $3.00 $49.19 $3.76 $1.48 $4.81 $59.23 325C Group 11 $30.65 $15.54 $3.00 $49.19 $3.76 $1.48 $4.81 $59.23 345B Group 11 $30.65 $15.54 $3.00 $49.19 $3.76 $1.48 $4.81 $59.23 385BL Group 11 $30.65 $15.54 $3.00 $49.19 $3.76 $1.48 $4.81 $59.23 Scrapers 631G Group 10 $30.22 $15.54 $3.00 $48.76 $3.73 $1.46 $4.76 $58.72 637G PP Group 11 $30.65 $15.54 $3.00 $49.19 $3.76 $1.48 $4.81 $59.23 Wheeled Loaders 928G Group 10 $30.22 $15.54 $3.00 $48.76 $3.73 $1.46 $4.76 $58.72 966G Group 11 $30.65 $15.54 $3.00 $49.19 $3.76 $1.48 $4.81 $59.23 972G Group 11 $30.65 $15.54 $3.00 $49.19 $3.76 $1.48 $4.81 $59.23 988G Group 11 $30.65 $15.54 $3.00 $49.19 $3.76 $1.48 $4.81 $59.23 992G Group 11 A $32.29 $15.54 $3.00 $50.83 $3.89 $1.52 $4.97 $61.21 Hydrauilc Hammers H-120 (fits 325) H-160 (fits 345) H-180 (fits 365/385) Other Equipment 420D 4WD Backhoe Group 10A $30.41 $15.54 $3.00 $48.95 $3.74 $1.47 $4.78 $58.95 CS563E Vibratory Roller Group 6 $28.71 $15.54 $3.00 $47.25 $3.61 $1.42 $4.62 $56.90 Light Truck - 1.5 Ton Supervisor's Truck Air Compressor + tools Group 3 $27.50 $15.54 $3.00 $46.04 $3.52 $1.38 $4.50 $55.44 Welding Equipment Group 9 $29.87 $15.54 $3.00 $48.41 $3.70 $1.45 $4.73 $58.30 Heavy Duty Drill Rig Group 10 $30.22 $15.54 $3.00 $48.76 $3.73 $1.46 $4.76 $58.72 Pump (plugging) Drill Rig Group 10 $30.22 $15.54 $3.00 $48.76 $3.73 $1.46 $4.76 $58.72
1/17/2011 Copyright © 2004-2008 - SRCE Software. All Rights Reserved. 1 of 3 Labor Rates Project Name: Marlin - Reclamation Plan Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls
Color Code Ke y User Input - Direct Input Direct Input User Input - Pull Down List Pull Down Selection Standardized Data (imported from data file) Standardized Data Program Calculated Value Locked Cell - Formula or Reference
ZONE ADJUSTMENTS Churchill, Douglas, Elko, Eureka, Humboldt, Lander, Lyon, Mineral, Pershing, Storey, Washoe, and White Pine Cost Basis/Project Region Northern Nevada Counties Power Equipment Operators 151 to 300 miles $3.00 Truck Drivers 151 to 300 miles $3.00 Laborers < 50 miles $0.00 INDIRECT COSTS FICA/Medicare (%) 7.65% Unemployment (%) 3.00% Workman's Compensation (%) 9.77%
Concrete Pump Gas Engine Vibrator Group 6 $28.71 $15.54 $3.00 $47.25 $3.61 $1.42 $4.62 $56.90 Generator 5KW HDEP Welder (pipe or liner) 5 Ton Crane Truck Group 10A $30.41 $15.54 $3.00 $48.95 $3.74 $1.47 $4.78 $58.95 25 Ton Crane Group 11 $30.65 $15.54 $3.00 $49.19 $3.76 $1.48 $4.81 $59.23
NOTES: (1) Equipment Type: Catepillar model or equivalent (2) Equipment Operator Source: D-B ENGI0003-35 07/01/2008 (3) Zone Basis: From Washoe Co. Courthouse TRUCK DRIVERS ($/hr) (4) 769D Truck Driver > 25 yds < $22.85 $11.94 $3.00 $37.79 $2.89 $1.13 $3.69 $45.51 777D Truck Driver > 60 yds < $24.29 $11.94 $3.00 $39.23 $3.00 $1.18 $3.83 $47.24 613E (5,000 gal) Water Wagon ter Truck > 2,500 gall $22.26 $11.94 $3.00 $37.20 $2.85 $1.12 $3.63 $44.80 621E (8,000 gal) Water Wagon ter Truck > 2,500 gall $22.26 $11.94 $3.00 $37.20 $2.85 $1.12 $3.63 $44.80 3 Dump Truck (10-12 yd ) Truck Driver > 8 yds < $22.26 $11.94 $3.00 $37.20 $2.85 $1.12 $3.63 $44.80
NOTES: (4) Truck Driver Source: D-B TEAM0533-002 12/01/2007 (5) Zone Basis: From Washoe Co. Courthouse LABORERS ($/hr) (6,7) General Laborer Group 1 $21.25 $6.87 $0.00 $28.12 $2.15 $0.84 $2.75 $33.86 Skilled Laborer Group 4 $21.75 $6.87 $0.00 $28.62 $2.19 $0.86 $2.80 $34.46 Driller's Helper Group 3 $21.50 $6.87 $0.00 $28.37 $2.17 $0.85 $2.77 $34.16 Rodmen (reinforcing concrete) Group 2 $21.35 $6.87 $0.00 $28.22 $2.16 $0.85 $2.76 $33.98 Cement finisher Group 3 $21.50 $6.87 $0.00 $28.37 $2.17 $0.85 $2.77 $34.16 Carpente r $27.54 $6.87 $0.00 $34.41 $2.63 $1.03 $3.36 $41.44
NOTES: (6) Laborer Source: D-B LABO0169-021 10/01/2006 (7) Carpenter Source: D-B CARP0971-010 07/01/2009 (8) Zone Basis: From Washoe Co. Courthouse PROJECT MANAGEMENT AND TECHNICAL LABOR ($/hr) (9) Project Manager $51.19 $51.19 $3.92 $1.54 $5.00 $61.64 Foreman $47.25 $47.25 $3.61 $1.42 $4.62 $56.90 Field Geologist/Engineer $95.45 $95.45 Field Tech/Sampler $63.64 $63.64 Range Scientist $95.45 $95.45
1/17/2011 Copyright © 2004-2008 - SRCE Software. All Rights Reserved. 2 of 3 Labor Rates Project Name: Marlin - Reclamation Plan Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls
Color Code Ke y User Input - Direct Input Direct Input User Input - Pull Down List Pull Down Selection Standardized Data (imported from data file) Standardized Data Program Calculated Value Locked Cell - Formula or Reference
ZONE ADJUSTMENTS Churchill, Douglas, Elko, Eureka, Humboldt, Lander, Lyon, Mineral, Pershing, Storey, Washoe, and White Pine Cost Basis/Project Region Northern Nevada Counties Power Equipment Operators 151 to 300 miles $3.00 Truck Drivers 151 to 300 miles $3.00 Laborers < 50 miles $0.00 INDIRECT COSTS FICA/Medicare (%) 7.65% Unemployment (%) 3.00% Workman's Compensation (%) 9.77%
NOTES: (9) Project Manager: R.S.Means 2009 (01300-700-0200 Total Inc l (9) Foreman Source: R.S.Means 2009 (01300-700-0260 Total Inc l (9) Techical Labor Source: SRK Consulting (Total Incl. O&P-10%)
1/17/2011 Copyright © 2004-2008 - SRCE Software. All Rights Reserved. 3 of 3 Labor Rates Project Name: Marlin - Reclamation Plan Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls Monthly Rental Basis: 176 hrs month
EQUIPMENT RENTAL RATE TABLE Monthly Rental Equipment Fuel/Lube/ EQUIPMENT TYPE (1) Total Rate Rate Hourly Rate Wear Bulldozers D6R $9,895 $56.22 $22.64 $78.86 D7R $13,855 $78.72 $28.80 $107.52 D8R $17,820 $101.25 $36.31 $137.56 D9R $21,725 $123.44 $52.25 $175.69 D10R $28,050 $159.38 $67.54 $226.92 D11R $54,000 $306.82 $97.58 $404.40 Motor Graders 14G/H $12,430 $70.63 $40.90 $111.52 16G/H $18,425 $104.69 $49.93 $154.62 Track Excavators 320C $7,240 $41.14 $19.45 $60.59 325C $7,885 $44.80 $24.47 $69.27 345B $10,800 $61.36 $36.37 $97.73 385BL $22,140 $125.80 $58.77 $184.57 Scrapers 631G $23,460 $133.30 $62.18 $195.47 637G PP $32,140 $182.61 $87.40 $270.01 Wheeled Loaders 928G $5,495 $31.22 $19.87 $51.09 966G $10,890 $61.88 $35.56 $97.43 972G $11,990 $68.13 $37.33 $105.45 988G $20,350 $115.63 $60.76 $176.38 992G $42,300 $240.34 $121.50 $361.85 Hydrauilc Hammers H-120 (fits 325) $4,840 $27.50 $3.11 $30.61 H-160 (fits 345) $8,100 $46.02 $6.85 $52.87 H-180 (fits 365/385) $10,100 $57.39 $8.11 $65.50 Other Equipment 420D 4WD Backhoe $3,045 $17.30 $13.90 $31.21 CS563E Vibratory Roller $9,618 $54.65 $8.26 $62.91 Light Truck - 1.5 Ton $4,000 $22.73 $2.36 $25.09 Supervisor's Truck $2,636 $14.98 $2.36 $17.34 Air Compressor + tools $3,935 $22.36 $0.00 $22.36 Welding Equipment $2,761 $15.69 $0.00 $15.69 Heavy Duty Drill Rig $57,090 $324.38 $0.00 $324.38 Pump (plugging) Drill Rig $57,090 $324.38 $0.00 $324.38 Concrete Pump $15,224 $86.50 $4.72 $91.22 Gas Engine Vibrator $534 $3.04 $4.72 $7.76 Generator 5KW $825 $4.69 $4.72 $9.41 HDEP Welder (pipe or liner) $4,110 $23.35 $0.00 $23.35 5 Ton Crane Truck $3,986 $22.65 $7.08 $29.73 25 Ton Crane $16,236 $92.25 $7.08 $99.33 Trucks 769D $14,000 $79.55 $37.74 $117.29 777D $28,000 $159.09 $70.38 $229.47 613E (5,000 gal) Water Wagon $9,235 $52.47 $32.17 $84.65 621E (8,000 gal) Water Wagon $14,575 $82.81 $32.53 $115.34 3 Dump Truck (10-12 yd ) $10,978 $62.38 $37.74 $100.12 NOTES: (1) Power Equipment Source: Cashman Equipment Company (July 2009) unless noted
1/17/2011 Copyright © 2004-2008 - SRCE Software. All Rights Reserved. 1 of 6 Equipment Costs Project Name: Marlin - Reclamation Plan Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls (2) Power Equipment Type: Catepillar model or equivalent (3) Drilliing Equipment Source: Means Heavy Construction (2009) (4) Other Equipment Source: Means Heavy Construction (2009) (5) Drill rig includes support (pipe) truck
1/17/2011 Copyright © 2004-2008 - SRCE Software. All Rights Reserved. 2 of 6 Equipment Costs Project Name: Marlin - Reclamation Plan Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls FUEL , LUBE AND WEAR CALCULATIONS PM Cost Under carriage G.E.T Fuel Use Cost@ Total Hourly EQUIPMENT TYPE Per Hour (1) or Tires (2) Consumption Rate gal/hr $2.36/ gal Equipment Bulldozers D6R $4.98 $4.09 5.75 $13.57 $22.64 D7R $5.03 $6.07 7.50 $17.70 $28.80 D8R $5.48 $7.82 9.75 $23.01 $36.31 D9R $6.46 $12.16 14.25 $33.63 $52.25 D10R $8.08 $16.98 18.00 $42.48 $67.54 D11R $9.80 $25.24 26.50 $62.54 $97.58 Motor Graders 14G/H $5.24 $8.74 $12.17 6.25 $14.75 $40.90 16G/H $5.09 $10.51 $16.63 7.50 $17.70 $49.93 Track Excavators 320C $4.18 $3.71 4.90 $11.56 $19.45 325C $4.22 $4.67 6.60 $15.58 $24.47 345B $5.44 $5.91 10.60 $25.02 $36.37 385 BL $6.70 $10.77 17.50 $41.30 $58.77 Scrapers 631G $6.24 $13.83 $6.71 15.00 $35.40 $62.18 637G PP $9.10 $13.83 $8.42 23.75 $56.05 $87.40 Wheeled Loaders 928G $3.92 $4.05 $3.64 3.50 $8.26 $19.87 966G $4.95 $8.54 $8.50 5.75 $13.57 $35.56 972G $4.71 $8.54 $9.33 6.25 $14.75 $37.33 988G $7.65 $14.47 $11.50 11.50 $27.14 $60.76 992G $11.09 $28.90 $27.23 23.00 $54.28 $121.50 Hydrauilc Hammers H-120 (fits 325 N/A $3.11 $0.00 $3.11 H-160 (fits 345) N/A $6.85 $0.00 $6.85 H-180 (fits 365/385) N/A $8.11 $0.00 $8.11 Other Equipment 420D 4WD Backhoe $2.88 $1.08 $2.86 3.00 $7.08 $13.90 CS563E Vibratory Roller N/A 3.50 $8.26 $8.26 Light Truck - 1.5 Ton N/A N/A 1.00 $2.36 $2.36 Supervisor's Truck N/A N/A 1.00 $2.36 $2.36 Air Compressor + tools N/A N/A $0.00 $0.00 Welding Equipment N/A $0.00 N/A $0.00 $0.00 Heavy Duty Drill Rig N/A N/A $0.00 $0.00 Pump (plugging) Drill Rig N/A N/A $0.00 $0.00 Concrete Pump N/A N/A 2.00 $4.72 $4.72 Gas Engine Vibrator N/A N/A 2.00 $4.72 $4.72 Generator 5KW N/A $0.00 N/A 2.00 $4.72 $4.72 HDEP Welder (pipe or liner) N/A $0.00 N/A $0.00 $0.00 5 Ton Crane Truck N/A 3.00 $7.08 $7.08 25 Ton Crane N/A 3.00 $7.08 $7.08 Trucks 769D $6.79 $6.45 $2.67 9.25 $21.83 $37.74 777D $10.42 $16.28 $3.56 17.00 $40.12 $70.38 613E (5,000 gal) Water Wagon $4.16 $2.64 N/A 10.75 $25.37 $32.17 621E (8,000 gal) Water Wagon $5.47 $5.23 N/A 9.25 $21.83 $32.53 Dump Truck (10-12 yd3 ) $6.79 $6.45 $2.67 9.25 $21.83 $37.74 Notes: (1) PM Source: July 2009 Cashman Equipment Rental Rate, Elko, NV (except as noted) (2) Undercarriage Source: Purcell Tire. 07/16/2009 (3) G.E.T. Source: CAT Historical Data (4) Fuel Use Source: Caterpillar Handbook, Edition 35, Ch. 20; or estimated average for smaller vehicles
1/17/2011 Copyright © 2004-2008 - SRCE Software. All Rights Reserved. 3 of 6 Equipment Costs Project Name: Marlin - Reclamation Plan Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls
1/17/2011 Copyright © 2004-2008 - SRCE Software. All Rights Reserved. 4 of 6 Equipment Costs Project Name: Marlin - Reclamation Plan Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls TIRE COST TABLES
Equi pment Tire Size # of Tires Per Cost Tire Cos t Life Tire Cost per Bulldozers D6R N/A D7R N/A D8R N/A D9R N/A D10R N/A D11R N/A Motor Graders 14G/H 20.5R25 6 $5,095.71 $30,574.29 3,500 $8.74 16G/H 23.5R25 6 $6,131.43 $36,788.57 3,500 $10.51 Track Excavators 320C N/A 325C N/A 345B N/A 385 BL N/A Scrapers 631G 37.25R35 4 $13,825.71 $55,302.86 4,000 $13.83 637G PP 37.25R35 4 $13,825.71 $55,302.86 4,000 $13.83 Wheeled Loaders 928G 17.5R25 4 $4,554.29 $18,217.16 4,500 $4.05 966G 26.5R25 4 $9,607.14 $38,428.56 4,500 $8.54 972G 26.5R25 4 $9,607.14 $38,428.56 4,500 $8.54 988G 35/65-33 4 $16,275.71 $65,102.84 4,500 $14.47 992G 45/65R45 4 $32,517.14 $130,068.56 4,500 $28.90 Hydrauilc Hammers H-120 (fits 325 N/A H-160 (fits 345) N/A H-180 (fits 365/385) N/A Other Equipment 420D 4WD Backhoe 340/80R18-195LR24 2 + 2 $1,627.14 $3,254.28 3,000 $1.08 CS563E Vibratory Roller N/A Light Truck - 1.5 Ton N/A Supervisor's Truck N/A Air Compressor + tools N/A Welding Equipment Heavy Duty Drill Rig N/A Pump (plugging) Drill Rig N/A Concrete Pump N/A Gas Engine Vibrator N/A Generator 5KW N/A HDEP Welder (pipe or liner) N/A 5 Ton Crane Truck N/A 25 Ton Crane N/A Trucks 769D 18.00R33 6 $6,452.86 $38,717.16 6,000 $6.45 777D 27.00R49 6 $13,565.71 $81,394.26 5,000 $16.28 613E (5,000 gal) Water Wagon 23.5R25 4 $3,967.14 $15,868.56 6,000 $2.64 621E (8,000 gal) Water Wagon 33.25R29 4 $10,452.86 $41,811.44 8,000 $5.23 Dump Truck (10-12 yd3 ) 6 $6,452.86 $38,717.16 6,000 $6.45 Notes: (1) Unit Cost Basis: Cost per set (2) Cost Basis: Total cost for all required tires. (3) Tire Cost Source: Purcell Tire. 07/16/2009
1/17/2011 Copyright © 2004-2008 - SRCE Software. All Rights Reserved. 5 of 6 Equipment Costs Project Name: Marlin - Reclamation Plan Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls (4) Tire Wear Source: Caterpillar Handbook, Edition 35; Ch. 20
1/17/2011 Copyright © 2004-2008 - SRCE Software. All Rights Reserved. 6 of 6 Equipment Costs Project Name: Marlin - Reclamation Plan Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls Revegetation Materials Seed Mixes Seed Mix Description Cost/Acre
None Mix 1 Basins $302.50 Mix 2 Low Hills $332.75 Mix 3 Uplands $363.00 Mix 4 Riparian or Custom $393.25 User Mix 1 Lowlands $217.00 User Mix 2 Low Hills User Mix 3 Uplands User Mix 4 Riparian Cost/lb lbs/Acre Cost/Acre User Mix 5 (from Seed Mix sheet) #DIV/0! 0 $0.00 Notes: Mulch Item Cost/lb lbs/Acre Cost/Acre
None Straw Mulch $0.11 2000 $220.00 Hydro Mulch $0.27 50 $13.50 550
Notes: Straw Specialties $8.00 per bale, certified (July 2009)
Granite Seed $13.00 per 50# bag Wood (Hydro) Mulch (June 2009)
Amendments Item Cost/lb lbs/Acre Cost/Acre
None Organic Matter $0.70 2000 $1,400.00 Treated Sludge 3000
1/17/2011 Copyright © 2004-2008 - SRCE Software. All Rights Reserved. 1 of 3 Material Costs Project Name: Marlin - Reclamation Plan Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls Chemical $0.32 100 $32.00 1000
Notes: Granite Seed $35.00 per 50 # bag Biosol Mix (June 2009) Western Nevada Supply $16.00 per 50 # bag 16/20/0 (June 2009)
Well Abandonment Materials Description Units Cost/unit
Cement cy $292.09 Grout (Low Grade Bentonite) cy $65.60 Inert Material/Cuttings cy $0.00
(1) Ferguson Enterprises, Inc. quote (June 2009) Type I,II Cement at $11.90 (2) Ferguson Enterprises, Inc. (June 2009) Abandonite grout at $12.70 per
Monitoring Costs Description Units Cost/unit
Monitor Well Pump ea. $2,140.00 Sampling Supplies ea. $5.00
Water Analysis (Profile I) (1) ea. $325.00 Leach Test (MWMP) w/ analysis ea. $395.00 ABA + S speciation ea. $125.00 WAD Cyanide in water ea. $35.00 Water Analysis (Profile II) (1) ea. $375.00
1/17/2011 Copyright © 2004-2008 - SRCE Software. All Rights Reserved. 2 of 3 Material Costs Project Name: Marlin - Reclamation Plan Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls
1/17/2011 Copyright © 2004-2008 - SRCE Software. All Rights Reserved. 3 of 3 Material Costs Project Name: Marlin - Reclamation Plan Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls
Color Code Key User Input - Direct Input Direct Input User Input - Pull Down List Pull Down Selection Standardized Data (imported from data file) Standardized Data Program Calculated Value Locked Cell - Formula or Reference
Revegetation Daily Means Number Unit Crew Output Materials Labor Equipment Total Notes Seeding - Broadcast Mechanical (1) acres $78.00 $67.00 $145.00 Seeding - Drill (1) acres 365 $0.00 Seeding - Hydroseeding (1) 365 $0.00 Shrub Planting - bare root 6-10 in (15- 25cm) (2) 02910-400-0561 ea. 1 Clab 365 $0.74 $0.00 $0.74 Tree Planting - bare root 11-16 in (27- 40cm) (3) 02910-400-0562 ea. 1 Clab 260 $1.04 $0.00 $1.04 Cactus Planting (4) ea. 1 Clab $0.00 NOTES: (1) Seeding Source: SlaterSeeding (July 2007) adjusted to 2009 (2) Shrub Source: (3) Tree Source: (4) Cactus Source:
Building and Wall Demolition Hourly productivity rates and crew composition from Means Heavy Construction 2005 Edition by permission of R.S.Means/Reed Construction Data . All equipment, labor and material unit costs are from Labor Costs, Equipment Costs and Material Costs spreadsheets Daily Means Number Unit Crew Output Labor Equipment Premium Total Notes Building Demolition Lg. steel 02220-110-0012 C.F. B-8 21500 $0.12 $0.12 $0.24 Lg. concrete 02220-110-0050 C.F. B-8 15300 $0.17 $0.17 $0.34 Lg. masonry 02220-110-0080 C.F. B-8 20100 $0.13 $0.13 $0.26 Lg. mixed 02220-110-0100 C.F. B-8 20100 $0.13 $0.13 $0.26 Sm. steel 02220-110-0500 C.F. B-3 14800 $0.15 $0.15 $0.30 Sm. concrete 02220-110-0600 C.F. B-3 11300 $0.19 $0.19 $0.38 Sm. masonry 02220-110-0650 C.F. B-3 14800 $0.15 $0.15 $0.30 Sm. wood 02220-110-0700 C.F. B-3 14800 $0.15 $0.15 $0.30
Wall Demolition Block 4 in (10 cm) thick 02220-130-2000 S.F. 1 Clab 180 $1.50 $0.00 20% $1.80 assumes vertical reinforcing rods included (20% premium) Block 6 in (15 cm) thick 02220-130-2040 S.F. 1 Clab 170 $1.59 $0.00 20% $1.91 assumes vertical reinforcing rods included (20% premium) Block 8 in (20 cm) thick 02220-130-2080 S.F. 1 Clab 150 $1.81 $0.00 20% $2.17 assumes vertical reinforcing rods included (20% premium) Block 12 in (30 cm) thick 02220-130-2100 S.F. 1 Clab 150 $1.81 $0.00 20% $2.17 assumes vertical reinforcing rods included (20% premium) Conc 6 in (15 cm) thick 02220-130-2400 S.F. B-9 160 $12.39 $1.99 10% $15.82 assumes average reinforcing (10% premium) Conc 8 in (20 cm) thick 02220-130-2420 S.F. B-9 140 $14.16 $2.27 10% $18.07 assumes average reinforcing (10% premium) Conc 10 in (25 cm) thick 02220-130-2440 S.F. B-9 120 $16.52 $2.65 10% $21.09 assumes average reinforcing (10% premium) Conc 12 in (30 cm) thick 02220-130-2500 S.F. B-9 100 $19.82 $3.18 10% $25.30 assumes average reinforcing (10% premium)
Waste Disposal Unit rates from Means Heavy Construction 2006 Edition by permission of R.S.Means/Reed Construction Data .
1/17/2011 Copyright © 2004-2008 - SRCE Software. All Rights Reserved. 1 of 4 Misc. Unit Costs Daily Means Number Unit Crew Output Materials Labor Equipment Premium Total Notes Rubbish Handling Dumpster delivery (average for all sizes) 02220-350-0910 ea. $43.50 $43.50 Haul (average for all sizes) 02220-350-0920 ea. $128.00 $128.00 Rent per month (average for all sizes) 02220-350-0940 ea. $43.50 $43.50 Disposal fee per ton (tonne) (average for all sizes) 02220-350-0950 ton $43.50 $43.50 NOTES: Dumpster Cost Source 2009 Means Heavy Construction Dumpster Disposal Fee Source: 2009 Means Heavy Construction Hazardous Material Handling - Solids Pickup fees 55 gal. drums 02110-300-1100 ea. $205.00 $205.00 Bulk material (average) 02110-300-1220/1230 ton $332.00 $332.00 Transport - truck load (80 drums, 25 cy (m3), 18 tons) 02110-300-1260/1270 mile $4.39 $4.39 Dump site solid disposal fee 02110-300-6000/6020 ton $261.00 $261.00 NOTES: Solid Handling Cost Source 2009 Means Heavy Construction Solid Disposal Fee Source: 2009 Means Heavy Construction Hazardous Material Handling - Liquids Vacuum Truck Pickup (2200 gal) 02110-300-3110 hr. $112.00 $112.00 Vacuum Truck Pickup (5000 gal) 02110-300-3120 hr. $152.00 $152.00 Dump site liquid disposal fee 02110-300-6000/6020 ton $261.00 $261.00 NOTES: Liquid Handling Cost Source 2009 Means Heavy Construction Liquid Disposal Fee Source: 2009 Means Heavy Construction Hydrocarbon Contaminated Soils (HCS) Insitu Biotreatment 02115-200-2020/2021 C.Y. $13.04 $13.04 HCS disposal fee 02115-200-2050/2055 C.Y. $102.00 $102.00 NOTES: Insitu Treatement Cost Source 2009 Means Heavy Construction HCS Disposal Fee Source: 2009 Means Heavy Construction Concrete Structure Installation Weekly dumpster rental rates from Means Heavy Construction 2005 Edition with permission by R.S.Means/Reed Construction Data . Weekly dumpster rental rates include haul to off-site disposal site and disposal fees Daily Means Number Unit Crew Output Materials Labor Equipment Premium Total Notes Reinforced Concrete Bulkheads and Shaft Covers
Grade walls - 15 in (40 cm) thick, 8 ft ( 2.5 m) high 03310-240-4300 C.Y. C-14D 80.02 $175.00 $102.93 $11.63 $289.56 includes reinforcing Grade walls - 15 in ( 40 cm) thick, 12 ft (3.7 m) high 03310-240-4350 C.Y. C-14D 26.2 $175.00 $314.37 $35.52 $524.89 includes reinforcing Elevated conc, 1-way beam & slab - 15ft (4.6m) span 03310-240-2700 C.Y. C-14B 20.59 $320.00 $407.50 $45.19 $772.69 includes reinforcing Elevated conc, 1-way beam & slab - 25ft (7.5m) span 03310-240-2750 C.Y. C-14B 28.36 $315.00 $295.85 $32.81 $643.66 includes reinforcing
Bat Gate/Foam Plug Installation $/ea. $/ea. Bat Gate (5) ea. 0.5 $2,518.31 $2,520.40 $815.60 materials $/ea. Installed Culvert Gate (5) ea. 1 $5,036.62 $1,849.70 $719.90 materials $/ea. Installed Adit Foam Plug (6) ea./C.Y. 0.5 $251.83 $2,533.40 $1,126.00 materials $/cy placed Production Opening Foam Plug (6) ea./C.Y. 0.5 $251.83 $2,533.40 $1,126.00 materials $/cy placed
NOTES: (5) Bat Gate Source: NV BLM, 2/2006: 8 hr + 1hr mob/demob + 1hr setup per gate (adjusted to 2009) (6) Foam Plug Source: NV BLM, 2/2006: 8 hr + 1hr mob/demob + 1hr setup per adit; 16 hrs per production opening (adjusted to 2009)
Misc. Linear Projects Hourly productivity rates and crew composition from Means Heavy Construction 2005 Edition by permission of R.S.Means/Reed Construction Data . All equipment, labor and material unit costs are from Labor Costs, Equipment Costs and Material Costs spreadsheets Daily
1/17/2011 Copyright © 2004-2008 - SRCE Software. All Rights Reserved. 2 of 4 Misc. Unit Costs Means Number Unit Crew Output Materials Labor Equipment Premium Total Notes Fencing Installation Barbed 3-strand 02820-170-1650 L.F. B-80A 760 $0.45 $1.07 $0.26 $1.78 Barbed 4-strand extrapolated L.F. B-80A 570 $0.60 $1.43 $0.35 $2.38 Barbed 5-strand 02820-130-0920 L.F. B-80A 456 $0.75 $1.78 $0.44 $2.97 Chain link 8-10ft (2.5-3m) Install 02820-130-0920 L.F. B-80C 180 $38.00 $4.51 $1.12 $43.63 Wood stockade fence 6 ft (2 m) high - Install 02820-510-1240 L.F. B-80C 150 $11.15 $5.42 $1.34 $17.91 user L.F. B-80A $0.00 user L.F. $0.00 user L.F. $0.00 user L.F. $0.00
Fencing Removal Barbed 3-strand Removal 02220-220-1600 L.F. 2 Clab 430 $1.26 $0.47 $1.73 Barbed 4-strand Removal extrapolated L.F. 2 Clab 355 $1.53 $0.57 $2.10 Barbed 5-strand Removal 02220-220-1650 L.F. 2 Clab 280 $1.93 $0.72 $2.65 Chain link 8-10 ft (2.5-3 m) Removal 02220-220-1700 L.F. B-6 445 $2.27 $0.92 $3.19 Wood, all types 4-6 ft ("1.5-2 m) high - Removal 02220-220-1775 L.F. 2 Clab 430 $1.26 $0.47 $1.73 user L.F. user L.F. $0.00 user L.F. $0.00 user L.F. $0.00
Pipeline and Culvert Removal 12 in (30 cm ) Diameter 02220-220-2900 L.F. B-6 175 $5.78 $2.34 $8.12 18 in (45 cm) Diameter 02220-220-2930 L.F. B-6 150 $6.74 $2.72 $9.46 24 in (60 cm) Diameter 02220-220-2960 L.F. B-6 120 $8.43 $3.41 $11.84 36 in (1m) Diameter 02220-220-3000 L.F. B-6 90 $11.24 $4.54 $15.78
Pipe and Drainpipe Installation Water 4in (10cm ) 40ft (12m) length, welded HDPE 02510-760-0100 L.F. B-22A 400 $3.12 $4.36 $2.10 $9.58 Water 6in (15cm) 40ft (12m) length, welded HDPE 02510-760-0200 L.F. B-22A 380 $9.15 $4.59 $2.21 $15.95 Drain 4in (10cm) perforated PVC 02620-630-2100 L.F. B-14 315 $0.94 $6.38 $1.43 $8.75 Drain 6in (15cm) perforated PVC 02620-630-2110 L.F. B-14 300 $1.75 $6.70 $1.50 $9.95 Drain 4in (10cm) corrugated, perf or plain 02220-220-2960 L.F. 2 Clab 1200 $0.48 $0.45 $0.17 $1.10 Drain 6in (15cm) corrugated., perf or plain 02220-220-3000 L.F. 2 Clab 900 $1.56 $0.60 $0.22 $2.38
Misc. Backhoe work 02210-700-0120 C.Y. B-11M 28 $16.84 $8.92 $25.76 Powerline and Transformer Removal Single Pole mile $35,000.00 Double Pole mile $40,000.00 Transformer (9) ea. $19,500.00
NOTES: (7) Single Pole Source: NVEnergy estimate (2009) (8) Double Pole Source: NVEnergy estimate (2009) (9) Transformer Source: Sierra Pacific Power Company estimate (2004) adjusted to 2009 Erosion and Sedimentation Control Hourly productivity rates and crew composition from Means Heavy Construction 2005 Edition by permission of R.S.Means/Reed Construction Data . All equipment, labor and material unit costs are from Labor Costs, Equipment Costs and Material Costs spreadsheets Daily Means Number Unit Crew Output Materials Labor Equipment Premium Total Notes Rip-Rap & Rock Lining Rip-Rap 3/8 to 1/4 C.Y. pieces, grouted 02370-450-0110 S.Y. B-13 80 $14.05 $25.16 $11.67 $50.88 assumes on-site source of rip-rap Rip-Rap 18 in min thick, no grout 02370-450-0200 S.Y. B-13 53 $37.97 $17.61 $55.58 assumes on-site source of rip-rap Gabions, 6 in (15 cm) deep 02370-450-0400 S.Y. B-13 200 $4.92 $10.06 $4.67 $19.65 assumes on-site source rock fill for gabions Gabions, 12 in (30 cm) deep 02370-450-0200 S.Y. B-13 153 $7.73 $13.15 $6.10 $26.98 assumes on-site source rock fill for gabions Gabions, 18 in (45 cm) deep 02370-450-0200 S.Y. B-13 102 $10.70 $19.73 $9.15 $39.58 assumes on-site source rock fill for gabions
1/17/2011 Copyright © 2004-2008 - SRCE Software. All Rights Reserved. 3 of 4 Misc. Unit Costs Gabions, 36 in (1m) deep 02370-450-0200 S.Y. B-13 60 $12.30 $33.54 $15.56 $61.40 assumes on-site source rock fill for gabions
HDEP Liner Installation Finish grading large area 2310-100-0100 S.F. B-11L 2,000 $0.37 $0.45 $0.82 Compaction - riding, vibrating roller - 12" lifts 2315-310-5080 S.F. B-10Y 3,500 $0.21 $0.14 $0.35 60 mil HDPE 2660-610-1200 S.F. 3 Skwk 1,600 $0.70 $0.81 $0.27 $1.78 TOTA L $0.70 $1.39 $0.86 $2.95 Construction Management Support Office Trailer, Furnished, no hook-ups 0150-500-0250 mo $149.00 $149.00 Toilet Portable, chemical 1590-400-6410 mo. $176.00 $176.00
TOTA L $325.00 $0.00 $0.00 $325.00 Pump and Casing Removal
Pump Type Measurement Unit Labor Equipment Total Notes Pump Remova l Submersible ft to pump L.F. $2.30 $5.01 $7.31 Line Shaft ft to pump L.F. $5.37 $11.69 $17.06
NOTES: (10) Pump Removal Source: WDC Exploration 12/2005 (adjusted to 2009)
1/17/2011 Copyright © 2004-2008 - SRCE Software. All Rights Reserved. 4 of 4 Misc. Unit Costs Project Name: Marlin - Reclamation Plan Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls
EQUIPMENT FLEETS
RIPPING Rip road Waste rock dumps, heaps, tails - rip flat surfaces Surface preparation Scarify
Small Dozer w/ multi-shank D7R $107.52 $57.91 $165.43 Totals $107.52 $57.91 $165.43
Medium Dozer w/ multi-shank D9R $175.69 $57.91 $233.60 Totals $175.69 $57.91 $233.60
Large Dozer w/ multi-shank D10R $226.92 $57.91 $284.83 Totals $226.92 $57.91 $284.83
Grader w/ multi-shank 16G/H $154.62 $58.95 $213.57 Totals $154.62 $58.95 $213.57
GRADING Grading storage and structure areas Grading waste rock dumps and heaps Grading landfills Constructing pit safety berms
Small Dozer Fleet D7R $107.52 $57.91 $165.43 Totals $107.52 $57.91 $165.43
Medium Dozer Fleet D9R $175.69 $57.91 $233.60 Totals $175.69 $57.91 $233.60
Large Dozer Fleet D10R $226.92 $57.91 $284.83 Totals $226.92 $57.91 $284.83
EXPLORATION GRADING Backfilling and grading exploration trenches Grading flat exploration roads
1/17/2011 Copyright © 2004-2008 - SRCE Software. All Rights Reserved. 1 of 11 Fleets (Crews) Project Name: Marlin - Reclamation Plan Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls
EQUIPMENT FLEETS
Small Dozer Fleet D6R $78.86 $57.91 $136.77 Totals $78.86 $57.91 $136.77
Medium Dozer Fleet D7R $107.52 $57.91 $165.43 Totals $107.52 $57.91 $165.43
Large Dozer Fleet D8R $137.56 $57.91 $195.47 Totals $137.56 $57.91 $195.47
EXCAVATING Earthen Berms Diversion ditch backfill Underground openings backfill - excavate and place
Large Excavator 385BL $184.57 $59.23 $243.80 Totals $184.57 $59.23 $243.80
Medium Excavator 345B $97.73 $59.23 $156.96 Totals $97.73 $59.23 $156.96
Small Excavator 325C $69.27 $59.23 $128.50 Totals $69.27 $59.23 $128.50
EXCAVATE AND RECONTOUR Recontour large roads (haul roads, access roads, etc.) Ponds - Excavate and pull liner and bur y Excavation and grading for diversion and drainage control
Large Excavator + Doze r 385BL $184.57 $59.23 $243.80 D10R $226.92 $57.91 $284.83 Totals $411.49 $117.14 $528.63
Medium Excavator + Doze r 345B $97.73 $59.23 $156.96 D9R $175.69 $57.91 $233.60
1/17/2011 Copyright © 2004-2008 - SRCE Software. All Rights Reserved. 2 of 11 Fleets (Crews) Project Name: Marlin - Reclamation Plan Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls
EQUIPMENT FLEETS
Totals $273.42 $117.14 $390.56
Small Excavator + Doze r 325C $69.27 $59.23 $128.50 D7R $107.52 $57.91 $165.43 Total Equipment $176.79 $117.14 $293.93
EXPLORATION ROAD/PAD RECONTOUR Recontour small roads (exploration roads, service roads, etc. ) Cut and Fill reclamation on slopes Drill pad recountour Drill sump backfill
Small Dozer D6R $78.86 $57.91 $136.77 Totals $78.86 $57.91 $136.77
Large Dozer D8R $137.56 $57.91 $195.47 Totals $137.56 $57.91 $195.47
Grader 14G/H $111.52 $58.95 $170.47 Totals $111.52 $58.95 $170.47
Small Excavator 320C $60.59 $59.23 $119.82 Totals $60.59 $59.23 $119.82
Medium Excavator 325C $69.27 $59.23 $128.50 Totals $69.27 $59.23 $128.50
LOAD, HAUL AND PLACE MATERIAL Rock placement Haul overburden for backfill Haul borrow for backfill Haul cover or growth media
Large Truck/Loader Fleet 777D $229.47 $47.24 $276.71 992G $361.85 $61.21 $423.06 D7R $107.52 $57.91 $165.43 Totals $698.84 $166.36 $865.20
1/17/2011 Copyright © 2004-2008 - SRCE Software. All Rights Reserved. 3 of 11 Fleets (Crews) Project Name: Marlin - Reclamation Plan Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls
EQUIPMENT FLEETS
Small Truck/Loader Fleet 769D $117.29 $45.51 $162.80 988G $176.38 $59.23 $235.61 D7R $107.52 $57.91 $165.43 Totals $401.19 $162.65 $563.84
Scraper/Dozer Fleet 631G $195.47 $58.72 $254.19 D10R $226.92 $57.91 $284.83 D7R $107.52 $57.91 $165.43 Totals $529.91 $174.54 $704.45
Tandem Scraper Fleet 637G PP $270.01 $59.23 $329.24 D7R $107.52 $57.91 $165.43 Totals $377.53 $117.14 $494.67
MISC. LOAD AND HAUL AND EARTHWORKS Sludge removal Drainage controls
Misc. - Cat 325B Excavator / 10-12 yd 3 Truck 325C $69.27 $59.23 $128.50 Dump Truck (10-12 yd3 ) $100.12 $44.80 $144.92 Totals $169.39 $104.03 $273.42
Misc. - Cat D9R Dozer/ Loader (5 yd 3) / 10-12 yd 3 Truck D9R $175.69 $57.91 $233.60 966G $97.43 $59.23 $156.66 Dump Truck (10-12 yd3 ) $100.12 $44.80 $144.92 Totals $373.24 $161.94 $535.18
Misc. - Cat D6 Dozer / Cat 966 Loader / 10-12 yd3 Truck D6R $78.86 $57.91 $136.77 966G $97.43 $59.23 $156.66 Dump Truck (10-12 yd3 ) $100.12 $44.80 $144.92 Totals $276.41 $161.94 $438.35
CONCRETE BREAKING Slab demolition Footing demolition Wall demolition
1/17/2011 Copyright © 2004-2008 - SRCE Software. All Rights Reserved. 4 of 11 Fleets (Crews) Project Name: Marlin - Reclamation Plan Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls
EQUIPMENT FLEETS
Small - Cat 325B Excavator w/ H140D s Hammer 325C $69.27 $59.23 $128.50 H-120 (fits 325) $30.61 $0.00 $30.61 D9R $175.69 $57.91 $233.60 Totals $275.57 $117.14 $392.71
Medium - Cat 345B Excavator w/ H180D s Hammer 345B $97.73 $59.23 $156.96 H-160 (fits 345) $52.87 $0.00 $52.87 D9R $175.69 $57.91 $233.60 Totals $326.29 $117.14 $443.43
Large - Cat 385B Excavator w/ H180D s Hammer 385BL $184.57 $59.23 $243.80 H-180 (fits 365/385) $65.50 $0.00 $65.50 D9R $175.69 $57.91 $233.60 Totals $425.76 $117.14 $542.90
DRILL HOLE ABANDONMENT Drill Hole - Grout or Cement Pump (plugging) Drill Rig $324.38 $58.72 $383.10 Driller's Helpe r $0.00 $34.16 $34.16 Driller's Helpe r $0.00 $34.16 $34.16 Totals $324.38 $127.04 $451.42
Drill Hole - Inert Media (Means Crew B-11M+ 1 Laborer) 420D 4WD Backhoe $31.21 $58.95 $90.16 General Labore r $0.00 $33.86 $33.86 Totals $31.21 $92.81 $124.02
Drill Hole - Casing Perforation or Removal Heavy Duty Drill Rig $324.38 $58.72 $383.10 Driller's Helpe r $0.00 $34.16 $34.16 Driller's Helpe r $0.00 $34.16 $34.16 Totals $324.38 $127.04 $451.42
MAINTENANCE FLEET Road Grading, Dust Suppression, Clean Up Maintenance - Small Water Truck and Cat 14G Grader 613E (5,000 gal) Water Wagon $84.65 $44.80 $129.45 14G/H $111.52 $58.95 $170.47 Totals $196.17 $103.75 $299.92
1/17/2011 Copyright © 2004-2008 - SRCE Software. All Rights Reserved. 5 of 11 Fleets (Crews) Project Name: Marlin - Reclamation Plan Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls
EQUIPMENT FLEETS
Maintenance - Large Water Truck and Cat 16G Grader 621E (8,000 gal) Water Wagon $115.34 $44.80 $160.14 16G/H $154.62 $58.95 $213.57 Totals $269.96 $103.75 $373.71
PROJECT SUPERVISION Supervisor's Truc k $17.34 $0.00 $17.34 Totals $17.34 $0.00 $17.34
MEANS CREW DEFINITIONS Crew composition from Means Heavy Construction 2005 Edition by permission of R.S.Means/Reed Construction Data . For use with misc. unit costs where Means is the source for productivity
1 Clab - Seedling Planting/Block Wall Demolition General Labore r $0.00 $33.86 $33.86 Totals $0.00 $33.86 $33.86
2 Clab - Barbed Wire/Wood Fence Removal, Corrugated Drainpipe Installation General Labore r $0.00 $33.86 $33.86 General Labore r $0.00 $33.86 $33.86 Light Truck - 1.5 Ton $25.09 $0.00 $25.09 Totals $25.09 $67.72 $92.81
2 Clab + Excavator - Pond Liner Cut and Fold General Labore r $0.00 $33.86 $33.86 General Labore r $0.00 $33.86 $33.86 325C $69.27 $59.23 $128.50 Totals $69.27 $126.95 $196.22
2 Clab + Welder - Bat Gates General Labore r $0.00 $33.86 $33.86 General Labore r $0.00 $33.86 $33.86 Welding Equipmen t $15.69 $58.30 $73.99 Light Truck - 1.5 Ton $25.09 $0.00 $25.09 Totals $40.78 $126.02 $166.80
3 Clab - Foam Adit Plugs General Labore r $0.00 $33.86 $33.86 General Labore r $0.00 $33.86 $33.86 420D 4WD Backhoe $31.21 $58.95 $90.16 Light Truck - 1.5 Ton $25.09 $0.00 $25.09 Totals $56.30 $126.67 $182.97
3 Clab + Welder - Culvert Bat Gate
1/17/2011 Copyright © 2004-2008 - SRCE Software. All Rights Reserved. 6 of 11 Fleets (Crews) Project Name: Marlin - Reclamation Plan Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls
EQUIPMENT FLEETS
General Labore r $0.00 $33.86 $33.86 General Labore r $0.00 $33.86 $33.86 Welding Equipmen t $15.69 $58.30 $73.99 420D 4WD Backhoe $31.21 $58.95 $90.16 Light Truck - 1.5 Ton $25.09 $0.00 $25.09 Totals $71.99 $184.97 $256.96
3 Clab D - 3 Laborers + Foreman General Labore r $0.00 $33.86 $33.86 General Labore r $0.00 $33.86 $33.86 General Labore r $0.00 $33.86 $33.86 Foreman $17.34 $56.90 $74.24 Supervisor's Truc k $17.34 $0.00 $17.34 Light Truck - 1.5 Ton $25.09 $0.00 $25.09 Totals $59.77 $158.48 $218.25
3 SKWK - Liner Installation Skilled Labore r $0.00 $34.46 $34.46 Skilled Labore r $0.00 $34.46 $34.46 Skilled Labore r $0.00 $34.46 $34.46 HDEP Welder (pipe or liner) $23.35 $0.00 $23.35 420D 4WD Backhoe $31.21 $58.95 $90.16 Totals $54.56 $162.33 $216.89
B-3 - Small Building Demoltion General Labore r $0.00 $33.86 $33.86 General Labore r $0.00 $33.86 $33.86 Foreman $17.34 $56.90 $74.24 928G $51.09 $58.72 $109.81 Dump Truck (10-12 yd3 ) $100.12 $44.80 $144.92 Dump Truck (10-12 yd3 ) $100.12 $44.80 $144.92 Totals $268.67 $272.94 $541.61
B-6 - Chain Link Fence/Pipeline/Culvert Removal General Labore r $0.00 $33.86 $33.86 General Labore r $0.00 $33.86 $33.86 928G $51.09 $58.72 $109.81 Totals $51.09 $126.44 $177.53
B-8 - Large Building Demolition General Labore r $0.00 $33.86 $33.86 General Labore r $0.00 $33.86 $33.86 Foreman $17.34 $56.90 $74.24 928G $36.97 $58.72 $95.69 25 Ton Crane $78.03 $59.23 $137.26
1/17/2011 Copyright © 2004-2008 - SRCE Software. All Rights Reserved. 7 of 11 Fleets (Crews) Project Name: Marlin - Reclamation Plan Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls
EQUIPMENT FLEETS
Dump Truck (10-12 yd3 ) $100.12 $44.80 $144.92 Dump Truck (10-12 yd3 ) $100.12 $44.80 $144.92 Totals $332.58 $332.17 $664.75
B-9 - Concrete Wall Demolition General Labore r $0.00 $33.86 $33.86 General Labore r $0.00 $33.86 $33.86 General Labore r $0.00 $33.86 $33.86 General Labore r $0.00 $33.86 $33.86 Foreman $17.34 $56.90 $74.24 Air Compressor + tools $22.36 $55.44 $77.80 Totals $39.70 $247.78 $287.48
B-10Y - General Compaction General Labore r $0.00 $33.86 $33.86 CS563E Vibratory Roller $62.91 $56.90 $119.81 Totals $62.91 $90.76 $153.67
B-11L - Fine Grading for Evaporation Pond Liner Base General Labore r $0.00 $33.86 $33.86 14G/H $111.52 $58.95 $170.47 Totals $111.52 $92.81 $204.33
B-11M - Backhoe Work 420D 4WD Backhoe $31.21 $58.95 $90.16 Totals $31.21 $58.95 $90.16
B-12G - Rip-Rap Machine Placed (Modified) 966G $97.43 $59.23 $156.66 325C $69.27 $59.23 $128.50 Light Truck - 1.5 Ton $25.09 $0.00 $25.09 Totals $191.79 $118.46 $310.25
B-13 - Grouted Rip-Rap & Gabion Baskets General Labore r $0.00 $33.86 $33.86 General Labore r $0.00 $33.86 $33.86 General Labore r $0.00 $33.86 $33.86 General Labore r $0.00 $33.86 $33.86 Foreman $17.34 $56.90 $74.24 25 Ton Crane $99.33 $59.23 $158.56 Totals $116.67 $251.57 $368.24
B-12G - Rip-Rap Machine Placed (Modified) 966G $97.43 $59.23 $156.66
1/17/2011 Copyright © 2004-2008 - SRCE Software. All Rights Reserved. 8 of 11 Fleets (Crews) Project Name: Marlin - Reclamation Plan Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls
EQUIPMENT FLEETS
325C $69.27 $59.23 $128.50 Light Truck - 1.5 Ton $25.09 $0.00 $25.09 Totals $191.79 $118.46 $310.25
B-12G - Rip-Rap Machine Placed (Modified) 966G $97.43 $59.23 $156.66 325C $69.27 $59.23 $128.50 Light Truck - 1.5 Ton $25.09 $0.00 $25.09 Totals $191.79 $118.46 $310.25
B-14 PVC Drain Pipe Installation Foreman $0.00 $56.90 $56.90 General Labore r $0.00 $33.86 $33.86 General Labore r $0.00 $33.86 $33.86 General Labore r $0.00 $33.86 $33.86 General Labore r $0.00 $33.86 $33.86 420D 4WD Backhoe $31.21 $58.95 $90.16 Light Truck - 1.5 Ton $25.09 $0.00 $25.09 Totals $56.30 $251.29 $307.59
B-22A - HDEP Installation - Pipe or Liner Foreman $17.34 $56.90 $74.24 Skilled Labore r $0.00 $34.46 $34.46 General Labore r $0.00 $33.86 $33.86 General Labore r $0.00 $33.86 $33.86 Light Truck - 1.5 Ton $25.09 $0.00 $25.09 5 Ton Crane Truc k $29.73 $58.95 $88.68 Generator 5K W $9.41 $0.00 $9.41 HDEP Welder (pipe or liner) $23.35 $0.00 $23.35 Totals $104.92 $218.03 $322.95
B-80A - Install Barbed Wire Fence General Labore r $0.00 $33.86 $33.86 General Labore r $0.00 $33.86 $33.86 General Labore r $0.00 $33.86 $33.86 Light Truck - 1.5 Ton $25.09 $0.00 $25.09 Totals $25.09 $101.58 $126.67
B-80C - Install Chain Link Fence (Flatbed truck has small crane) General Labore r $0.00 $33.86 $33.86 General Labore r $0.00 $33.86 $33.86 General Labore r $0.00 $33.86 $33.86 Light Truck - 1.5 Ton $25.09 $0.00 $25.09 Totals $25.09 $101.58 $126.67
1/17/2011 Copyright © 2004-2008 - SRCE Software. All Rights Reserved. 9 of 11 Fleets (Crews) Project Name: Marlin - Reclamation Plan Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls
EQUIPMENT FLEETS
C-14B - Elevated Concrete Slabs (Reinforced Concrete Shaft Covers) Foreman $17.34 $56.90 $74.24 Carpente r $0.00 $41.44 $41.44 Carpente r $0.00 $41.44 $41.44 Carpente r $0.00 $41.44 $41.44 Carpente r $0.00 $41.44 $41.44 Carpente r $0.00 $41.44 $41.44 Carpente r $0.00 $41.44 $41.44 Carpente r $0.00 $41.44 $41.44 Carpente r $0.00 $41.44 $41.44 Carpente r $0.00 $41.44 $41.44 Carpente r $0.00 $41.44 $41.44 Carpente r $0.00 $41.44 $41.44 Carpente r $0.00 $41.44 $41.44 Carpente r $0.00 $41.44 $41.44 Carpente r $0.00 $41.44 $41.44 Carpente r $0.00 $41.44 $41.44 Carpente r $0.00 $41.44 $41.44 General Labore r $0.00 $33.86 $33.86 General Labore r $0.00 $33.86 $33.86 Rodmen (reinforcing concrete) $0.00 $33.98 $33.98 Rodmen (reinforcing concrete) $0.00 $33.98 $33.98 Rodmen (reinforcing concrete) $0.00 $33.98 $33.98 Rodmen (reinforcing concrete) $0.00 $33.98 $33.98 Cement finishe r $0.00 $34.16 $34.16 Cement finishe r $0.00 $34.16 $34.16 Gas Engine Vibrato r $7.76 $56.90 $64.66 Concrete Pump $91.22 $0.00 $91.22 Totals $116.32 $1,048.80 $1,165.12
C-14D - Concrete Walls Formed in Place (Reinforced Concrete Adit Bulkheads) Foreman $17.34 $56.90 $74.24 Carpente r $0.00 $41.44 $41.44 Carpente r $0.00 $41.44 $41.44 Carpente r $0.00 $41.44 $41.44 Carpente r $0.00 $41.44 $41.44 Carpente r $0.00 $41.44 $41.44 Carpente r $0.00 $41.44 $41.44 Carpente r $0.00 $41.44 $41.44 Carpente r $0.00 $41.44 $41.44 Carpente r $0.00 $41.44 $41.44 Carpente r $0.00 $41.44 $41.44 Carpente r $0.00 $41.44 $41.44 Carpente r $0.00 $41.44 $41.44 Carpente r $0.00 $41.44 $41.44 Carpente r $0.00 $41.44 $41.44
1/17/2011 Copyright © 2004-2008 - SRCE Software. All Rights Reserved. 10 of 11 Fleets (Crews) Project Name: Marlin - Reclamation Plan Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls
EQUIPMENT FLEETS
Carpente r $0.00 $41.44 $41.44 Carpente r $0.00 $41.44 $41.44 Carpente r $0.00 $41.44 $41.44 Carpente r $0.00 $41.44 $41.44 General Labore r $0.00 $33.86 $33.86 General Labore r $0.00 $33.86 $33.86 Rodmen (reinforcing concrete) $0.00 $33.98 $33.98 Rodmen (reinforcing concrete) $0.00 $33.98 $33.98 Cement finishe r $0.00 $34.16 $34.16 Gas Engine Vibrato r $7.76 $56.90 $64.66 Concrete Pump $91.22 $0.00 $91.22 Totals $116.32 $1,029.56 $1,145.88
1/17/2011 Copyright © 2004-2008 - SRCE Software. All Rights Reserved. 11 of 11 Fleets (Crews) Productivity - Bulldozers
Dozer Specifications Description D11R D10R D9R D8R D7R D6R Blade Width (SU) 18.33 ft 15.92 ft 14.17 ft 12.92 ft 12.08 ft 10.67 ft Shank Guage (3 shanks) 9.83 ft 8.67 ft 7.67 ft 7.08 ft 6.50 ft 6.50 ft Pocket Spacing 4.75 ft 4.33 ft 3.87 ft 3.58 ft 3.25 ft 3.25 ft Dozer Productivity (Semi-U Blade) Ripping Width (Ripper + 1 Pocket) 14.58 ft 13.00 ft 11.54 ft 10.66 ft 9.75 ft 9.75 ft Ripping Speed 1.0 mph 1.0 mph 1.0 mph 1.0 mph 1.0 mph 1.0 mph 3000 Ripping Maneuver (turn) Time 0.25 min 0.25 min 0.25 min 0.25 min 0.25 min 0.25 min Ripping Hourly Production (excluding maneuvering time) 5280 ft 5280 ft 5280 ft 5280 ft 5280 ft 5280 ft 2500 y = 185082x -0.919 Source: Caterpillar Performance Handbook Edition 35
2000 D11R D10R y = 81639x -0.8502 D9R Dozer Productivity vs. Grading Distance 1500 D8R D7R Production (LCY/hr) LCY/hr D6R Averag e y = 115087x -1.0809 Dozing 1000 Distance y = 89889x -0.9425 (feet) D11R D10R D9R D8R D7R D6R
50 4800 2800 2000 1400 1000 500
100 2800 1700 1250 850 700 520 -0.7796 200 1500 950 700 475 375 210 y = 22719x 300 1000 625 450 275 250 150 0 y = 101029x -1.1506 400 750 500 300 175 0 100 200 300 400 500 600 700 500 600 410 250 125 600 500 350 200 100 Dozing Distance (feet)
Source: Caterpillar Performance Handbook Edition 35 dozer productivity = k x Dozing Distance p (see graph) k = 185082 81639 89889 115087 22719 101029 p = -0.919 -0.8502 -0.9425 -1.0809 -0.7796 -1.1506
Productivity - Bulldozers (cont.)
% Grade vs. Dozing Factor % Grade vs. Dozing Factor % Grade Dozing Factor -30 1.6 1.8 -20 1.4 1.6 -10 1.2 1.4 0 1 10 0.8 1.2 20 0.55 1 30 0.3 0.8 y = -0.0214x + 0.9786
Dozing Factor 0.6
Source: Caterpillar Performance Handbook Edition 35 0.4 % Grade Dozing Factor = -0.0214x + 0.9786 0.2 (see graph) 0 -30 -20 -10 0 10 20 30 % Grade (- Downhill, + Uphill) Source: Caterpillar Performance Handbook Edtion 35 Job Condition Correction Factors - Bulldozers
OPERATOR Average 0.75 MATERIAL (1)
1/17/2011 Copyright © 2004-2008 - SRCE Software. All Rights Reserved. 1 of 8 Productivity Loose stockpile 1.20 Normal 1.00 Hard to cut; frozen — with tilt cylinder 0.80 0.80 Hard to drift; “dead” (dry,non-cohesive material) or very sticky material Rock, ripped or blasted 0.60 SLOT DOZING OR SIDE BY SIDE 1.20 DOZING (1) VISIBILITY Good conditions 1.00 JOB EFFICIENCY 50 min/hr 0.83 (1) Selected in facility worksheets. Other factors included as standard factors.
Source: Caterpillar Performance Handbook Edition 35
Material Densities (1)
3 Material lb/cy kg/m Alluvium 2,900 1,720 Note: uses Sand & Gravel - Dry from Caterpillar Handbook Basalt 3,300 1,960 Clay - Dry 2,500 1,480 Granite - broken 2,800 1,660 Gravel 2,550 1,510 LS - broken 2,600 1,540 LS - crushed 2,600 1,540 Sandstone 2,550 1,510 Shale 2,100 1,250 Stone - crushed 2,700 1,600 Tailings - Coarse (dry, loose sand) 2,400 1,420 Tailings - Slimes (loose sand & clay) 2,700 1,600 Topsoil 1,600 950 (1) Source: Caterpillar Performance Handbook Edition 35
Productivity - Scrapers
Scraper Specifications Description 631G 637G PP Empty Weight 100,600 lb 112,760 lb Payload Capacity Struck 24 cy 24 cy Heaped 34 cy 34 cy Average 29 cy 29 cy Loaded by One D10R Self* Load Time 0.5 min 0.5 min Maneuver and Spread 0.7 min 0.6 min Job Efficiency 0.83 0.83 Rolling Resistance** 2.5% 2.5%
* Requires pair
**A firm, smooth, rolling roadway with dirt or light surfacing, flexing slightly under load or undulating, maintained fairly regularly, watered
Source: Caterpillar Performance Handbook Edition 35
Weight of Materials Downhill Scraper Speed - Grade Retarding vs. Effective Grade (Grade - Rolling Resistance) 631G 637G PP Scraper Loaded Load Loaded Weight Material lb/cy lb Weight (lbs) 22.0% 16.0% 10.0% 5.0% 1.0% (lbs) 25.0% 20.0% 15.0% 10.0% 5.0% 1.0% Alluvium 2,900 84,100 184,700 7.5 10 13 33 33 196,860 7 10 10 18.5 34 34 Basalt 3,300 95,700 196,300 7.5 10 13 24.5 33 208,460 7 10 10 18.5 25 34
1/17/2011 Copyright © 2004-2008 - SRCE Software. All Rights Reserved. 2 of 8 Productivity Clay - Dry 2,500 72,500 173,100 7.5 10 13 33 33 185,260 7 10 10 18.5 34 34 Granite - broken 2,800 81,200 181,800 7.5 10 13 33 33 193,960 7 10 10 18.5 34 34 Gravel 2,550 73,950 174,550 7.5 10 13 33 33 186,710 7 10 10 18.5 34 34 LS - broken 2,600 75,400 176,000 7.5 10 13 33 33 188,160 7 10 10 18.5 34 34 LS - crushed 2,600 75,400 176,000 7.5 10 13 33 33 188,160 7 10 10 18.5 34 34 Sandstone 2,550 73,950 174,550 7.5 10 13 33 33 186,710 7 10 10 18.5 34 34 Shale 2,100 60,900 161,500 7.5 10 18 33 33 173,660 10 10 13.5 18.5 34 34 Stone - crushed 2,700 78,300 178,900 7.5 10 13 33 33 191,060 7 10 10 18.5 34 34 Tailings - Coarse (dry, loose sand) 2,400 69,600 170,200 7.5 10 13 33 33 182,360 7 10 10 18.5 34 34 Tailings - Slimes (loose sand & clay) 2,700 78,300 178,900 7.5 10 13 33 33 191,060 7 10 10 18.5 34 34 Topsoil 1,600 46,400 147,000 7.5 10 18 33 33 159,160 10 10 13.5 18.5 34 34 Empty 10 18 24.5 33 33 Empty 10 10 13.5 18.5 34 34
Source: Caterpillar Performance Handbook Edition 34
Productivity - Scrapers (cont.)
0 631G Travel Time - Loaded 0 0 7000 631G Scraper Travel Time - Uphill Loaded 0
Time (min) 0 1.3418 Total Resistance (%) 6000 0.0% y = 2142.7x
(rolling + grade) 1.3083 0.5 1 2 3 4 5 k p 0 2.0% y = 1838.1x 0.0% 825 2250 5300 2142.7 1.34185000 0 1.1893 2.0% 750 1800 4600 1838.1 1.3083 4.0% y = 1310.7x
4.0% 550 1400 3000 4800 6700 1310.7 1.1893 e 6.0% 490 1000 2200 3300 4500 5600 1022.1 1.0664000 0 6.0% y = 1022.1x 1.066 8.0% 375 750 1600 2500 3300 4200 769.01 1.0558 10.0% 300 700 1300 2000 2750 3450 645.84 1.0424 8.0% y = 769.01x 1.0558 3000 12.0% 250 550 1100 1700 2250 2800 531.04 1.0453 (fe Distance 14.0% 225 450 900 1400 1850 2250 452.07 1.0089 10.0% y = 645.84x 1.0424 2000 distance 12.0% y = 531.04x 1.0453 Travel Time (min) = p k 1.0089 Source: Caterpillar Performance Handbook Edition 35 1000 14.0% y = 452.07x
0 0 1 2 3 4 5 Time (min) Source: Cater pillar Performance Handbook Edition 34
631G Travel Time - Uphill Empty
7000
631G Scraper Travel Time - Uphill Empty 6000 0.0% y = 2496.9x 1.1675 Total Resistance (%) Time (min) (rollin g + grade ) 0.5 1 2 3 4 5 k p 2.0% y = 2294.8x 1.24 0.0% 1100 2550 5550 2496.9 1.1675 5000 2.0% 950 2400 5300 2294.8 1.24 4.0% y = 1998.3x 1.2849 4.0% 800 2100 4750 1998.3 1.2849 e 6.0% 700 1600 3550 5550 1557.5 1.1566 4000 6.0% y = 1577.5x 1.1566 8.0% 600 1300 2750 4300 5750 1287.8 1.0891 10.0% 500 1100 2250 3450 4550 5750 1068.1 1.0552 8.0% y = 1287.8x 1.0891 3000
12.0% 450 900 1950 2950 3950 4950 923.56 1.0492 (fe Distance 14.0% 375 800 1600 2500 3300 4200 783.37 1.0444 10.0% y = 1068.1x 1.0552 2000 distance 12.0% y = 923.56x 1.0492 Travel Time (min) = p k 1.0444 Source: Caterpillar Performance Handbook Edition 35 1000 14.0% y = 783.37x
0 0 1 2 3 4 5 Time (min) S C ill P f H db kEdii 34
1/17/2011 Copyright © 2004-2008 - SRCE Software. All Rights Reserved. 3 of 8 Productivity Ti me (min) Source: Cater pillar Performance Handbook Edition 34
Productivity - Scrapers (cont.)
637G PP Travel Time - Loaded
8000
7000 y = 2402.9x 1.2362 637G Push-Pull Scraper Travel Time - Uphill Loaded 0.0% Total Resistance (%) Time (min) y = 2127.6x 1.2995 (rollin g + grade ) 0.5 1 2 3 4 5 k p 6000 2.0% 0.0% 1000 2500 5550 2402.9 1.2362 y = 1659.4x 1.2212 2.0% 850 2200 5150 2127.6 1.2995 5000 4.0%
4.0% 700 1700 3900 6250 1659.4 1.2212 e y = 1287.8x 1.0891 6.0% 600 1300 2750 4300 5750 1287.8 1.0891 6.0% 8.0% 500 1100 2200 3300 4500 5600 1059.1 1.0421 4000 1.0421 10.0% 400 850 1750 2700 3600 4475 839.89 1.0503 8.0% y = 1059.1x 12.0% 375 750 1500 2300 3000 3800 751.58 1.0055 (fe Distance 3000 1.0503 14.0% 275 600 1300 2000 2650 3250 595.28 1.0794 10.0% y = 839.89x
1.0055 2000 12.0% y = 751.58x Travel Time (min) = p distance k 1.0794 Source: Caterpillar Performance Handbook Edition 35 1000 14.0% y = 595.28x
0 0 1 2 3 4 5 Time (min) Source: Caterpillar Performance Handbook Edition 34
637G PP Travel Time - Loaded
8000 637G Push-Pull Scraper Travel Time - Uphill Empty Total Resistance (%) Time (min) 7000 1.0945 (rollin g + grade ) 0.5 1 2 3 4 5 k p 0.0% y = 2695.9x 0.0% 1250 2750 5700 2695.9 1.0945 1.1047 2.0% 1200 2600 5550 2587.1 1.1047 6000 2.0% y = 2587.1x 4.0% 990 2450 5250 2335.2 1.0234 1.2034 6.0% 800 2000 4450 7216 1914.4 1.2211 4.0% y = 2335.2x 5000 8.0% 700 1600 3500 5400 7216 1563.8 1.124 1.2211 10.0% 625 1350 2800 4300 5750 7216 1327.4 1.0611 6.0% y = 1914.4x 12.0% 550 1200 2450 3750 5000 6250 1168.8 1.0524 4000 1.124 14.0% 495 1010 2100 3200 4250 5300 1015.8 1.0337 8.0% y = 1563.8x Distance (feet) Distance 3000 y = 1327.4x 1.0611 10.0% Travel Time (min) = p distance k Source: Caterpillar Performance Handbook Edition 35 2000 12.0% y = 1168.8x 1.0524
14.0% y = 1015.8x 1.0337 1000
0 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 Time (min) Source: Cater pillar Performance Handbook Edition 34
Productivity - Haul Trucks
Haul Truck Specifications Description 769D 777D Chassis Weight 53,506 lb 111,575 lb Body Weight 17,200 lb 36,788 lb Standard Liner Weight Total Truck Weight 70,706 lb 148,363 lb
1/17/2011 Copyright © 2004-2008 - SRCE Software. All Rights Reserved. 4 of 8 Productivity Payload Capacity Struck 21.6 cy 55 cy Heaped 31.7 cy 78.6 cy Average 26.65 cy 66.8 cy
Maneuver to Load Time 0.7 min 0.7 min Maneuver and Dump Time 1.1 min 1.1 min Job Efficiency 0.83 0.83 Rolling Resistance** 2.5% 2.5%
**A firm, smooth, rolling roadway with dirt or light surfacing, flexing slightly under
Source: Caterpillar Performance Handbook Edition 35
Weight of Materials Downhill Haul Truck Speed - Grade Retarding vs. Effective Grade (Grade - Rolling Resistance) 769D 777D Truck Truck Loaded (769D) Load (777D) Load Loaded Weight Material lb/cy lb lb Weight (lbs) 20.0% 15.0% 10.0% 5.0% (lbs) 20.0% 15.0% 10.0% 5.0% Alluvium 2,900 77,285 193,720 147,991 11 11 15 26 342,083 7 9 12 29 Basalt 3,300 87,945 220,440 158,651 11 11 11 20 368,803 7 7 12 21 Clay - Dry 2,500 66,625 167,000 137,331 11 11 15 26 315,363 7 9 16 29 Granite - broken 2,800 74,620 187,040 145,326 11 11 15 26 335,403 7 9 12 29 Gravel 2,550 67,958 170,340 138,664 11 11 15 26 318,703 7 9 16 29 LS - broken 2,600 69,290 173,680 139,996 11 11 15 26 322,043 7 9 12 29 LS - crushed 2,600 69,290 173,680 139,996 11 11 15 26 322,043 7 9 12 29 Sandstone 2,550 67,958 170,340 138,664 11 11 15 26 318,703 7 9 16 29 Shale 2,100 55,965 140,280 126,671 11 11 15 26 288,643 7 9 16 29 Stone - crushed 2,700 71,955 180,360 142,661 11 11 15 26 328,723 7 9 12 29 Tailings - Coarse (dry, loose sand) 2,400 69,600 170,200 Tailings - Slimes (loose sand & clay) 2,700 78,300 178,900 Topsoil 1,600 42,640 106,880 113,346 11 11 15 26 255,243 9 12 16 29 Empty 15 15 26 36 Empty 16 16 29 39
Source: Caterpillar Performance Handbook Edition 35
769D Travel Time - Loaded
769D Haul Truck Travel Time - Uphill Loaded 8000 0.0% y = 3316.3x 1.1422 Total Resistance (%) Time (min) 7000 (rollin g + grade ) 0.4 1 2 3 4 5 k p 2.0% y = 2733x 1.1372 0.0% 1148 3428 7183 3316.3 1.1422 6000 2.0% 951 2821 5904 2733 1.1372 1.1033 4.0% 689 1984 4198 6330 1928.3 1.1033 4.0% y = 1928.3x e 5000 6.0% 508 1427 2952 4510 6002 1386.4 1.0725 8.0% 394 1082 2263 3411 4592 5740 1061.8 1.06 4000 6.0% y = 1386.4x 1.0725 10.0% 328 869 1771 2690 3608 4510 857.82 1.0373
15.0% 213 574 1181 1804 2394 3018 565 1.0482 (fe Distance 3000 8.0% y = 1061.8x 1.06
2000 10.0% y = 857.82x 1.0373 p distance Travel Time (min) = 1000 k 15.0% y = 565x 1.0482 Source: Caterpillar Performance Handbook Edition 35 0 0 1 2 3 4 5 Time (min) Source: Cater pillar Performance Handbook Edition 34
Productivity - Haul Trucks (cont.)
769D Travel Time - Empty
8000 769D Haul Truck Travel Time - Uphill Empty 0.0% y = 3870x 1.0888 Total Resistance (%) Time (min) 7000 (rollin g + grade ) 0.4 1 2 3 4 5 k p 4.0% 0.0% 1427 3870 3870 1.0888 6000 y = 3400.1x 1.0895
1/17/2011 Copyright © 2004-2008 - SRCE Software. All Rights Reserved. 5 of 8 Productivity 6000 y =3400 .1x 4.0% 1246 3444 7183 3400.1 1.0895
6.0% 1017 2755 5740 2734.5 1.0759 e 5000 6.0% y = 2734.5x 1.0759 8.0% 820 2230 4592 6954 2191.3 1.0614 10.0% 722 1870 3870 5838 1872 1.0391 4000 15.0% 459 1246 2558 3903 5248 6560 1222.9 1.0523 8.0% y = 2191.3x 1.0614
Distance (fe Distance 3000
1.0391 2000 10.0% y = 1872x distance p 1000 Travel Time (min) = y = 1222.9x 1.0523 k 15.0% Source: Caterpillar Performance Handbook Edition 35 0 0 1 2 3 4 5 Time (min)
Source: Cater pillar Performance Handbook Edition 3 4
777D Travel Time - Uphill Loaded
7000 777D Haul Truck Travel Time - Uphill Loaded Total Resistance (%) Time (min) (rollin g + grade ) 0.4 1 2 3 4 5 k p 6000 0.0% y = 2403.1x 1.3876 0.0% 656 2558 6068 2403.1 1.3876 4.0% 459 1509 3313 5215 7085 1412 1.1863 5000 4.0% y = 1421x 1.1863 6.0% 394 1148 2460 3706 5018 6298 1111 1.0949 8.0% 918 1886 2837 3772 4756 922.57 1.0197
10.0% 722 1443 2165 2919 3608 721.44 1.0027 e 4000 6.0% y = 1111x 1.0949 15.0% 525 1017 1558 2034 2591 520.56 0.9905
8.0% 1.0197 3000 y = 922.57x Distance (fe Distance
p distance 10.0% y = 721.44x 1.0027 Travel Time (min) = 2000 k Source: Caterpillar Performance Handbook Edition 35 15.0% y = 520.56x 0.9905 1000
0 0 1 2 3 4 5 Time (min) Source: Cater pillar Performance Handbook Edition 3 4 Productivity - Haul Trucks (cont.)
777D Haul Truck Travel Time - Uphill Empty 777D Travel Time - Uphill Empty Total Resistance (%) Time (min) (rollin g + grade ) 0.4 1 2 3 4 5 k p 7000 0.0% 968 3034 6560 2929.3 1.192 4.0% 754 2657 6068 2532.8 1.2999 6.0% 656 2247 5182 2167.3 1.2873 6000 0.0% y = 2929.3x 1.192 8.0% 607 1935 4248 6560 1846.2 1.1831 10.0% 525 1607 3378 5215 7282 1528.4 1.1332 4.0% y = 2532.8x 1.2999 15.0% 410 1197 2460 3706 4986 6232 1139.7 1.072 5000
e 4000 6.0% y = 2167.3x 1.2873
p distance 8.0% 1.1831 Travel Time (min) = 3000 y = 1846.2x
k (fe Distance Source: Caterpillar Performance Handbook Edition 35
10.0% 1.1332 2000 y = 1528.4x
15.0% y = 1139.7x 1.072 1000
0 0 1 2 3 4 5
1/17/2011 Copyright © 2004-2008 - SRCE Software. All Rights Reserved. 6 of 8 Productivity 0 1 2 3 4 5 Time (min) Source: Cater pillar Performance Handbook Edition 34
Productivity - Wheel Loaders
Wheel Loader Specifications Description 928G 966G 972G 988G 992G Wheeled Loaders General Purpose Spade Nose-Rock Payload Capacity 928G 3.25 cubic yard not available Struck 2.5 cy 4.46 cy 4.71 cy 6.9 cy 13.2 cy 966G 5.0 cubic yard not available Heaped 3.25 cy 5 cy 5.5 cy 8.33 cy 16 cy 972G 5.5 cubic yard not available Average 2.88 cy 4.73 cy 5.11 cy 7.62 cy 14.60 cy 988G not available 8.3 cubic yard Matched Truck N/A N/A N/A 769D 777D 992G not available 16.0 cubic yard Average Cycle Time 0.45 min 0.50 min 0.50 min 0.55 min 0.60 min Passes to Fill Truck N/A N/A N/A 4 5 note: capacities are 2:1 heaped, SAE standards Time to Fill Truck N/A N/A N/A 2.29 3.23 NOTES: Buckets for both Track Excavators and Wheel Loaders are offered by CECo & Rolling Resistance** 2.5% 2.5% 2.5% 2.5% 2.5% available for the rental rates quoted. Bucket sizes and capacities obtained from CATERPILLAR PERFORMANCE HANDBOOK, ED 34; Section 12, Wheel Loader and Section 4, Excavators Bucket capacity and width dictated by material weight and configuration, ie., shot, loose, **A firm, smooth, rolling roadway with tight bank, stockpile, rock, etc. Typical Nevada applications were used to determine above bucket capacities as related to materials & densities. Job site specifics may alter specific Source: Caterpillar Performance Handbook Edition 35 bucket requirements. (Cashman Equipment, Elko, Nevada - February 21, 2005)
Productivity - Motor Graders
Motor Grader Specifications Description 14G/H 16G/H Grader Width 9.25 ft 10.08 ft Blade Width 14.00 ft 16.00 ft Ripper Width (7 shanks) 8.50 ft 9.75 ft Road Maintence Speed Minimum 3.0 mph 3.0 mph Maximum 9.5 mph 9.5 mph Average 6.3 mph 6.3 mph Hourly Production 33000 ft 33000 ft Ripping Speed 1.0 mph 1.0 mph Minimum 0.0 mph 0.0 mph Maximum 3.0 mph 3.0 mph Average 1.5 mph 1.5 mph Hourly Production (excluding manuever time) 7920 ft 7920 ft Maneuver time per pass 0.5 min 0.5 min
Source: Caterpillar Performance Handbook Edition 35
Productivity - Excavators
Track Excavator Specifications Track Excavators Hvy Duty Rock Extreme Service Exc Hvy Duty Trench Description 320C 325C 345B 385BL (e.g. haulroad recontour) Bucket Capacity 1.57 cy 2.22 cy 3 cy 7.3 cy 320C 30" .78 cubic yd 55.1", 1.57 cubic yard 23.6", .54 yard Fill Factor 0.90 0.90 0.90 0.90 325C 36", 1.25 cubic yd 60", 2.22 cubic yard 30", .88 cubic yard Average Bucket Load 1.413 cy 1.998 cy 2.7 cy 6.57 cy 345B 43.2", 1.69 cubic yd 65", 3.0 cubic yd 48", 2.09 cubic yd Soil Type hard clay hard clay hard clay hard clay 385BL 85", 6.30 cubic yd. 96.0, 7.30 cubic yd 57", 2.75 cuic yd Job Condition med-hard med-hard med-hard med-hard Cycle Times (minutes) - based on hard clay Load Bucket 0.09 0.09 0.13 0.19 Swing Loaded 0.06 0.06 0.07 0.06 Dump Bucket 0.03 0.04 0.02 0.03 Swing Empty 0.05 0.06 0.06 0.07 Note: capacities are 2:1 heaped, SAE standards Total Cycle Time 0.23 0.25 0.28 0.35 NOTES: Buckets for both Track Excavators and Wheel Loaders are offered by CECo & Job Efficiency 0.83 0.83 0.83 0.83 available for the rental rates quoted. Bucket sizes and capacities obtained from CATERPILLAR Operator Efficiency 0.75 0.75 0.75 0.75 PERFORMANCE HANDBOOK, ED 34; Section 12, Wheel Loader and Section 4, Excavators Corrected Productivity (LCY/hr) 229 cy 299 cy 360 cy 701 cy Bucket capacity and width dictated by material weight and configuration, ie., shot, loose, Exploration Road Cycle Time (1) 0.38 0.40 N/A N/A tight bank, stockpile, rock, etc. Typical Nevada applications were used to determine above Exploration Road Corr Prod (LCY/hr) 139 cy 187 cy N/A N/A bucket capacities as related to materials & densities. Job site specifics may alter specific Track Width 9.17 ft 9.83 ft 11.42 ft 11.50 ft bucket requirements ( Cashman Equipment, Elko, Nevada - February 21, 2005)
Ditch/Trench Excavation Bucket Capcity 0.45 cy 0.88 cy 2.09 cy 2.75 cy
1/17/2011 Copyright © 2004-2008 - SRCE Software. All Rights Reserved. 7 of 8 Productivity Fill Factor 0.50 0.50 0.50 0.50 Corrected Productivity (LCY/hr) 37 cy 66 cy 139 cy 147 cy (1) Exploration cycle time assumes feathering/smoothing performed by excavator Source: Caterpillar Performance Handbook Edition 35
Concrete Breaking Production
Track Excavator w/Hammer Specifications Description 325C 345B 385B Hydraulic Hammer H120D s H160D s H180D s Material reinforced concrete Min Shift Production (8hr) 160 cy 300 cy 350 cy Max Shift Production (8hr) 300 cy 850 cy 1550 cy Avg Shift Production (8hr) 230 cy 575 cy 950 cy Job Efficiency 0.83 0.83 0.83
Source: Caterpillar Performance Handbook Edition 35
Drill Hole Plugging Productivity
Drill Hole Plugging Productivity Description Drill Rig Pump Rig Move-to-hole, set-up, tear-down 1.5 hr 1.5 hr
Pulling casing (threaded, not cemented) 80 ft/hr
Single-pass perforating (water wells) 4-inch 240 ft/hr 6-inch 240 ft/hr 8-inch 200 ft/hr 12-inch 150 ft/hr 18-inch 40 ft/hr
Perforation setup,trip in/out,tear-down ti m 1.0 hr Perforation tool cost (wear cost) $1.25 ft
Inert Material Placement (backfill) Grouting/Cement 5.33 cy/hr Cuttings (see below) 3.50 cy/hr
Sournce: WDC Exploration, Dec 2005 Cuttings Placement Productivity Shift productivity (Means 02210-700- 0120; Crew B11M) 28 cy / shift Shift length 8 hours Estimated Hourly Productivity 3.5 cy / hour
1/17/2011 Copyright © 2004-2008 - SRCE Software. All Rights Reserved. 8 of 8 Productivity Bond Calculation Seed Mixture
Project Name: Marlin - Reclamation Plan Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls
Seed Mixture Species Number of Species % in Common Name Scientific Name PLS/acre Cost/Lb Cost/Acre Seeds / lb Mix Grasses $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00
$0.00 $0.00 $0.00 $0.00
$0.00 $0.00 $0.00 $0.00
Total 0 $0.00
Source:
Notes:
1/17/2011 1 of 1 Copyright © 2004 - Jeffrey V. Parshley. All Rights Reserved. Seed Mixture Project Name: Marlin - Reclamation Plan Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls Years of Annual Total Cost Equipment Operation Cost Replacement Waste Water Treatment 17 3024000 51408000 9000000
Labo r Equipment Material Quantity Units Unit Cost Unit Cost Unit Cost Total Cost ($) ($) ($) $ Hazmat Incinerator, 400 lbs/ h 10 da y 3325 0 25000 283250