Safeguarding Abandoned Mines on Boston Hill | Silver City, NM Safeguarding Abandoned Mines on Boston Hill | Silver City, NM
table of contents Phase I Phase II appendix a: boston hill talking points, November 2012 ...... II appendix a: public meeting...... II This talking point paper is the information the team utilized going into the Phase I interviews with known Public Meeting notices were posted at the entries of all Boston Hill trailheads and at the Silco Theatre. stakeholders. Notices were sent via email to stakeholder lists and the meeting was held the eveingin of April 3, 2013 at appendix b: communication records...... III the Silco Theatre. The material in Appendix A represent the advertisements, the presentation materials and These communication records are summaries of conversations the team had with different community the meeting notes from that meeting. members and groups. More dialogue about safeguarding abandoned mines on Boston Hill can be found appendix b: kleinfelder phase II site...... III at http://gilacommunity.net/. The Gilacommunity.net blog is a significant community forum discussing topics Appendix B is for information only and represents a separate contracted study of Legal Tender Mine of local and regional importance. Many stakeholders were informed of the AML Boston Hill planning effort Complex commissioned by the AML program. The study is integral to our understanding of the conditions and had the opportunity to express their opinions. of the abandoned Legal Tender Mine Complex . appendix c: stakeholder listing...... IXI appendix c: field design meeting #1...... IXI This list represents those landowners within the study area, residents that attended meetings, requested Held at the Silco Theatre field design meeting #1 was held from Aug 8-10, 2013. This appendix contains flyers, information and corresponded with the team. orientation materials, meeting notes and attendance lists. appendix d: town council presentation, january 8, 2013...... IXII appendix d: field design meeting #2...... IXII This Silver City Town Council presentation was made to the Council and public in the chambers on January 6, Held at the Silco Theatre field design meeting #1 was held from October 5-8, 2013. This appendix contains 2013 by John Kretzmann, P.E. Director of the AML program and Ken Romig, DPS. flyers, orientation materials, meeting notes, attendance lists and before and after graphics. appendix E: techinical memorandum: techinical review of boston hill open appendix E: xxx Golder Associates evaluated the 1999 Duke Engineering Boston Hill Environmental Assessment. This summary xxx evaluation was necessary to understand the limitations and general accuracy of the report in light of possible AML activity on Boston Hill. appendix F: draft report on evaluation of the boston hill project by j scott altenbach, phd...... XCII Bat habitat study of Boston Hill by Dr. Altenbach. Conducted on April 23, 2013. appendix G: town of silver city amphitheater study...... XCVII Ampitheatre study by Architecture Workshop commissioned by the Town of Silver City. appendix h: town of silver city demographics...... C Demographics of Silver City to understand the planning context from a socio-economic basis.
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Appendix A: Boston Hill Talking Points Appendix B: Communication Records
Introduction to the Planning Project for Mine Safety & Trails Improvement on Boston Hill November 2012 Communication Record 1) A team of planners, landscape architects and geologists is working on a plan to safeguard mines and improve trails on Boston Hill. The plan is scheduled to be completed by April 2013. Project No.: 12-0089.001 Project: Boston Hill 2) The team has been contracted by the Abandoned Mine Land (AML) program, a state agency within the Date: 10/25/2012 Energy, Minerals & Natural Resources Department (EMNRD). AML has had mine safeguarding projects Time: 4:30 pm on Boston Hill in the past. The Boston Hill area is made up of City, County, BLM and private lands and Type: Meeting includes some land that had mining activity post-1977 Attending: Jeff Hill, WNMU, Joseph Gendron, Ken Romig, DPS By: Ken Romig, DPS 3) AML is authorized by the Surface Mining Control and Reclamation Act (SMCRA) to address mines abandoned prior to 1977 and is funded through taxation on coal mining throughout the U.S. AML’s Copies To: Ken Romig, File priorities are: Issue Date: 11/13/12 i) Protecting the public from immediate hazards resulting from historic mining practices ii) Protecting the public from hazards that do not constitute immediate hazards Discussion Items: 1. WNMU uses the Boston Hill site frequently for plant surveys and outdoor education. iii) Reclamation of lands and water degrades by historic mining practices. Reclamation may include 2. Jeff Hill recognizes the danger the open mines pose to students and knows that the students hang out in the mines conservation measures that return land to productive purposes, e.g., agriculture or recreational frequently. uses. 3. Jeff also recognizes that the dangers pose liability issues for the city and others. 4. Jeff offered WMNU resources for study of the area including mammalian studies, GIS mapping and student research 4) AML is committed to a public outreach process to reach general agreement about an action plan to a) projects. reduce public safety hazards in the Boston Hill area; b) protect wildlife habitat associated with mine 5. Hi vision would be to set up the Legal Tender for periodic tours. features; c) improve recreational amenities in the area; and d) protect sensitive wildlife and plant species 6. WNMU President, Joe Sheppard, 538-6238, is very interested in service learning and can be approached. associated with historic mining areas. A team of landscape architects, planners and environmental 7. WMNU mammalian studies, Randy Jennings (575) 538-6519. scientists will be interviewing and speaking to community groups and individuals to get a sense of what 8. Rolling Stones Geology Club Boston Hill means to them so that these factors can be considered in the development of a Plan of Action. 9. WNMU William Norris, Botanist, Native Plant Collections, Environmental sustainability. 10. Micheal Metcalf, Sculptor (575) 538-6538 5) AML has the ability to fund reclamation work on Boston Hill according to the plan of action that may be 11. WNMU professor for GIS- Cathy Whitman (575) 538-6253. developed. There are constraints, however: a) AML serves the entire state and has budget limitations. b) AML may be “sunsetted” and there may be a time limit on its funding. c) All AML funding must be closely tied to protecting public safety, especially hazard mitigation. This report is assumed to be a true and accurate account of this communication unless notice to the contrary is d) If the community has no desire to implement any projects on Boston Hill, AML is willing to do received within 10 calendar days of issue. nothing. End of Report 6) The team is very interested in your questions and input regarding the possibility of reclamation work on Boston Hill: a) What questions do you have about the proposed project? b) How do you use Boston Hill? How often? Where? c) How does Boston Hill benefit you, the city and/or your organization? d) Do you have any concerns about Boston Hill? e) Are there improvements/changes to Boston Hill you would like to see?
Thank you for your interest, your questions and your suggestions! If you would like more information, please contact:
Tim Karpoff, Meeting Facilitator Ken Romig, Project Manager 505-280-4797 505-923-9598 [email protected] [email protected]
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Communication Record Communication Record Project No.: 12-0089.001 Project No.: 12-0089.001 Project: Boston Hill Project: Boston Hill Date: 10/23/2012 Date: 10/26/2012 Time: 10:00 pm Time: 1:00 pm Type: Telephone Type: Meeting Attending: Chris Teske, BLM AML Manager Attending: Claire Catlett, GRIP, Ken Romig, DPS By: Ken Romig By: Ken Romig, DPS Copies To: Ken Romig, File Copies To: Ken Romig, File Issue Date: 11/13/12 Issue Date: 11/13/12 Discussion Items: 1. Chris Teske is very interested in collaborating with the State AML program. His primary interest is in measures and Discussion Items: improvements that increase the safety of the Legal Tender Mine. My impression of our conversation is that BLM isn’t 1. Claire is the Vista Volunteer with GRIP (Gila Resources Information Project) . GRIP is an independent group comfortable leaving the immediate hazard of harm unattended/unaddressed. monitoring the mining in and around the Gila region. She teaches kid’s water quality monitoring, gives 2. Chris has been walking on the site and encounter people enjoying the mine. The people he met requested that BLM not presentations and advocates for environmental stewardship. Her goal is the eradication of poverty through Healthy do anything to the site. Community Resource Management. 3. Chris is following the states lead in the development of strategies for the Boston Hill area in accordance with the 2. Claire serves on a committee that is working with the greenways and trails groups to develop a bike/trail master plan assistance agreement the two organizations have signed.. He suggested that after our initial assessment was complete that with Community by Design (Charlie Dean) the team address the BLM leadership team in Las Cruces. 3. Claire was aware of an effort to design an amphitheater near the Cappilla area in the past. 4. Claire is also aware of a buried and long forgotten stream in Silver City called Yankee Creek which sometimes runs This report is assumed to be a true and accurate account of this communication unless notice to the contrary is in the spring and monsoon season through town. She’d like to reclaim the stream in some way. received within 10 calendar days of issue. 5. Claire suggests the use of local labor and resources including the local the local company - Steelworks. She was not aware who the local stone masons were. End of Report 6. Claire was aware that the mines have been used by the homeless and that liability and diverse landownership issues have hampered decisions about the Legal Tender mine. 7. Claire recommends we contact Bob Schiowitz, Former member of Friends of Boston Hill, who now works for the forest service(?), who maintains the trails.
This report is assumed to be a true and accurate account of this communication unless notice to the contrary is Communication Record received within 10 calendar days of issue. Project No.: 12-0089.001 Project: Boston Hill End of Report Date: 10/26/2012 Time: 9:00 pm Type: Meeting
Attending: Alex Brown, Town of Silver City Manager, Ken Romig, DPS By: Ken Romig, DPS
Copies To: Ken Romig, File Issue Date: 11/13/12
Discussion Items: 1. The Town is a destination community, in that people come to Silver City and stay in Silver City. The town is working hard on quality of life projects that boost GRT, keep tourists in Silver City another day and raise revenues 2. The town sees Boston Hill as an economic, quality of life asset, however they are aware of the liability issues inherent in the dangers of abandoned mines on Boston Hill. Alex Brown was happy to hear that we are working with Joseph Gendron. He suggested that we contact David Lawrence for GIS information, Jim Coates and Joe Ray. 3. The Town has hired Kevin Robinson, architect, to assess the possibility of constructing an amphitheater at the Spring Street high wall. The acoustics are apparently very good. The amphitheater would host the Blues festival- that gets between 10 and 12 K visitors and Pickamania- 3-5K visitors. There are access and parking issues that need to be overcome.
\\enterprise\landscape\12-0089.0014. The Town Boston would Hill\Task Ilike - Assessm theent\Communication hiking and records\Co trailsmmunication open, maintainedRecord_ Teske.doc and used by the residents
This report is assumed to be a true and accurate account of this communication unless notice to the contrary is received within 10 calendar days of issue. \\enterprise\landscape\12-0089.001 Boston Hill\Task I - Assessment\Communication records\Communication Record_ Claire Catlett.doc End of Report
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Communication Record
Project No.: Communication Record Project: Boston Hill Date: 10/29/2012 Project No.: 12-0089 Time: 2 pm Project: Boston Hill Type: Telephone Date: 12/18/12 Time: 2pm Attending: Jim Gruel Type: Telephone By: Joseph Gendron Attending: Ken Copies To: Ken Romig By: Ken Issue Date: 10/30/12 Copies To: File Discussion Items: Issue Date: 12/19/12 1. I informed him about the current AML project and he indicated his interest in cooperating and signing a Consent-to- Entry form. Discussion Items: a. He gave me his cell # (575-313-3126) so he could be contacted directly rather than thru his office. 1. Marshall requested that no improvements be made to Boston Hill. He lives on West Cooper and considers the hill his backyard. He visits the caves and Raven pits periodically. 2. He repeated his interest in ultimately making a deal with the Town for acquisition of the southern part of his property that 2. Improvements, mitigating the headwall hazards ect.. is thought of as government babysitting people who ought to take includes the Legal Tender mine. responsibility for themselves. 3. One improvement that he sees that could mitigate the hazards, or address the concerns landowners have about liability is 3. He alluded that he wasn’t sure of the property boundaries and thought the City owned some of the Legal Tender. I told signage that states- hike at your own risk or stay on trails. him we verified ownership when we performed a property survey in 2001 and that a little more than half of the fenced in 4. Marshall has never seen any homeless people living in the caves- not is he aware of any person being hurt on the Hill. area was on his property. 5. Marshall does not think that human visitation contributes to a degradation of the wildlife (bat) habitat- except if people are throwing rocks or purposely disturbing habitat. Bats should not be the reason to keep people out of the ballroom. This report is assumed to be a true and accurate account of this communication unless notice to the contrary is 6. Dumping is a problem and Marshall regularly takes a trash bag up to the area to clean up after people. He is a received within 10 calendar days of issue. responsible user of the area. 7. Marshall also thinks that our best efforts to improve the area, make people safe or fence the mining features will be End of Report vandalized and it will be money wasted. 8. Marshall did state that if there were significant drops adjacent to the trails that protective nets may be an improvement he would agree is necessary.
This report is assumed to be a true and accurate account of this communication unless notice to the contrary is received within 10 calendar days of issue.
End of Report
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Communication Record Communication Record Project No.: 12-0089.001 Project: Boston Hill Project No.: 12-0089.001 Date: 2/27/2013 Project: Boston Hill Time: 9:00 am Date: 2/27/2013 Type: Phone Time: 10:00 am Type: Phone Who: Kevin Robinson, architect By: Joseph Gendron Who: Jim Gruel, Legal Tender Property Owner By: Joseph Gendron Copies To: Ken Romig, File Issue Date: 2/28/13 Copies To: Ken Romig, File Issue Date: 2/28/13 Discussion Items: 1. I met with Kevin to look at possible amphitheater sites around the Adonis Pits. We liked a site that bordered Cooper Discussion Items: Street, between the cemetery and La Capilla that included a Percha shale outcrop that had the potential to be shaped. 1. Jim Gruel is “ready” to get rid of the south portion of the Legal Tender Claim where the openings are. He would This is outside of the Adonis Pits area but in the vicinity. We also looked at sites west of the animal shelter that also had propose to the Town that he trade them a portion of the claim for 2 acres the Town owns up Cottage San Road that is potential. next to a trailer park that he owns. 2. He is going to do an evaluation process and probably present at least two sites for consideration and see what kind of 2. I told him I would let Peter Russell at the Community Development Department know and see if a meeting is warranted reaction they get. If necessary, he would have additional sites that would be presented if objections surface to the two to discuss. initial sites. This report is assumed to be a true and accurate account of this communication unless notice to the contrary is This report is assumed to be a true and accurate account of this communication unless notice to the contrary is received within 10 calendar days of issue. received within 10 calendar days of issue. End of Report End of Report Communication Record
Project No.: 12-0089.001 Project: Boston Hill Date: 2/27/2013 Time: 5:00 pm Communication Record Type: Phone Project No.: 12-0089.001 Who: Peter Russell, Town of Silver City Community Development Project: Boston Hill Director Date: 3/15/2013 By: Joseph Gendron Time: 1:00 pm Type: Field Visit Copies To: Ken Romig, File Issue Date: 2/28/13 Who: Anthony Gutierrez, Grant County Planning Director By: Joseph Gendron Discussion Items: Copies To: Ken Romig, File 1. I told him about my conversation with Jim Gruel and that with the AML project developing a plan for safeguarding, Issue Date: 3/17/13 this is a prime time for the Town to consider acquisition. Also, AML may have a different approach to safeguarding public open space versus private land. He agreed on the timing and will bring up the subject with the Town Manager. Discussion Items: He cautioned that the process would take time and would include the involvement of the City Attorney. He also wants 1. I met with Anthony to visit the abandoned mine features on the Globe claim owned by the County as well as the Legal Jim Coates involved and mentioned that he is leaving soon on a two week vacation. Tender. Anthony had never been to either and did not think there were many people in County government who had 2. One scenario he thought could be used in the meantime (after consultation with manager and attorney) was for the except for Raul Turrieta in the Assessor’s office. Town to write a letter to AML stating the Town’s intent so that appropriate planning could proceed. 2. Anthony was appreciative of being taken on a tour of these features and was very impressed by their nature. We talked about the possibility of the County and the City getting together to look at options for the future as to how this land This report is assumed to be a true and accurate account of this communication unless notice to the contrary is should be managed and by who. received within 10 calendar days of issue. 3. Anthony will discuss this visit with the County Manager, John Saari, to make him aware of the situation and to discuss what to do with the property such as a possible land exchange with the City following hazard mitigation work. I invited End of Report him to the open house on March 21 and forwarded email invitation.
This report is assumed to be a true and accurate account of this communication unless notice to the contrary is received within 10 calendar days of issue.
\\enterprise\landscape\12-0089.001 Boston Hill\Task I - Assessment\Communication records\Communication Record_ Robinson.doc End of Report \\enterprise\landscape\12-0089.001 Boston Hill\Task I - Assessment\Communication records\Communication Record_ Gruel, Russell.doc
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Communication Record Communication Record Project No.: 12-0089 Project: Boston Hill Project No.: 12-0089 Date: 5/24/13 Project: Boston Hill Time: Date: February 22, 2013 Type: Telephone Time: 2 PM Type: Interview Attending: Ken Romig By: Ken Romig Attending: Ken Romig, Councilor Jose Ray By: Ken Romig Copies To: Issue Date: Copies To: Issue Date: Discussion Items: 1. Tom walks Boston Hill frequently- possibly as much as twice or three times a week. He lives 4-5 blocks away and has Discussion Items: been a resident of Silver City for 6 years. 1. Jose and I met at his home near Capilla. Jose had mentioned he had worked in the mines and the integration work into 2. He loves the ruggedness of Boston Hill and doesn’t want that to change though he does acknowledge that he has seen the AML project was a facet of our work. some dangerous shafts that could cause harm.. 2. He and his friend drove trucks from the luck mine to the railroad for shipping to Pueblo. 3. He enters Boston Hill from the south side which does not get much traffic and he has not been to the Legal Tender 3. Jose spent his childhood playing in the abandoned mines on the hill. He remembers when there were people living in the complex. abandoned mines 4. He would like to see more benches for rest 4. There are rumors of some bad doings in the mines- including satan workshipping. 5. Cell phone # (575) 956-8731 5. There are also rumors that the cave entrance on the highwall on Spring Street was a getaway cave for the courthouse at 6. Address: one time. 315 11th Street 6. Jose Ray finds fossils on the hill. Silver City, NM 88061 This report is assumed to be a true and accurate account of this communication unless notice to the contrary is received within 10 calendar days of issue. This report is assumed to be a true and accurate account of this communication unless notice to the contrary is received within 10 calendar days of issue. End of Report
End of Report Communication Record
Project No.: 12-0089 Project: Boston Hill Date: February 22, 2013 Time: 10 AM Type: Interview
Attending: Ken Romig, Fay McCalmont By: Ken Romig
Copies To: Issue Date:
Discussion Items: 1. Ken introduced the Boston Hill project to Fay and informed her of our work with AML 2. Fay McCalmont was very interested in the involvement of artists in the project. She was enthusiastic about the possibility of the project meshing with the clay festival and involving artists working in clay with the community. a. Kay introduced Ken to the mural program that is construction hand walls/ceramic mosaics with all the kids in Grant County. b. The selection of visual artists is of importance to the Arts Council as fair public competition for publicly funding art can be contentious. 3. The Blues Festival has increased in attendance and outgrown Penny Park. They are paying attention to the amphitheater discussion and they are part of a task force. 4. Fay stated that we could download images from their website to use in our presentations
This report is assumed to be a true and accurate account of this communication unless notice to the contrary is received within 10 calendar days of issue. \\enterprise\landscape\12-0089.001 Boston Hill\Task I - Assessment\Communication records\Communication Record Tom Froiland.doc \\enterprise\landscape\12-0089.001 Boston Hill\Task I - Assessment\Communication records\Communication Record Councilor Jose Ray.doc End of Report
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Lana Idriss
Communication Record From: Kretzmann, John, EMNRD [[email protected]] Sent: Monday, January 14, 2013 12:08 PM Project No.: 12-0089 To: [email protected] Project: Boston Hill Cc: Ken Romig; Timothy Karpoff; McGrath, Sarah, EMNRD; Moiola, Lloyd, EMNRD Date: 4/15/13 Subject: Re: Boston Hill Time: Type: Telephone Hello Dana, Attending: Ken Romig By: Ken Romig Thank you for contacting the Abandoned Mine Land (AML) Program about the Boston Hill project. I Copies To: appreciate your interest and concern. Issue Date: The primary mandate of the New Mexico AML Program is to protect public health, safety and property from the Discussion Items: adverse effects of historic mining practices (more information on the Program can be found at 1. Jim is interested in closing off the entry to the Globe and Legal Tender complex http://www.emnrd.state.nm.us/MMD/AML/amlmain.html). As you infer in your email, there are significant 2. He is open to a land exchange to transfer ownership to the Town so that the majority of Boston Hill is in common numbers of hazardous mine openings and mining-related highwalls on Boston Hill. Less obviously, there is ownership also the potential for sudden collapse of several large, shallow, underground stopes and a geotechnical 3. He has concerns about safety and people getting hurt and has heard of peple camping in the caves 4. [email protected] consultant to the Program is beginning a geotechnical analysis of rock stability at one site with shallow stopes. Because of the proximity of Boston Hill to the town of Silver City, its high level of public visitation and the This report is assumed to be a true and accurate account of this communication unless notice to the contrary is importance of Boston Hill to many for recreation and other uses, the Program is working as a partner with received within 10 calendar days of issue. residents, landowners, advocacy groups, stakeholders, and agencies to develop a plan of action for Boston Hill. Dekker Perich Sabatini (DPS), a contractor to the AML Program, is handling the public outreach, coordination End of Report and planning phases of work. If, through the outreach effort, the general consensus is that no action be taken, the Program is prepared to honor that request and will spend its grant monies elsewhere. Alternately, if the consensus is to mitigate some Communication Record or all of the historic mining hazards within the planning boundary (which includes both private and public land), DPS will move into the design phase of work, with continued public participation. Project No.: 12-0089 Project: Boston Hill I encourage you to continue to interact with the Boston Hill project team at DPS and the AML Program. Date: 4/13 Time: John A. Kretzmann, P.E. Type: Telephone Program Manager Attending: Ken Romig NM Abandoned Mine Land Program By: Ken Romig 1220 S. Saint Francis Drive Santa Fe, New Mexcio 87505 Copies To: 505.476.3423 Issue Date: 505.476.3402 fax [email protected] Discussion Items: 1. Ken Keppler lives near the Cheyenne trailhead. 2. He recommended we contact Ira Guin who owns five acres on the edge of Boston Hill and lives out of town- phone # (760) 256-6122 and (760) 987-1407 3. Ken noted that cows have been excluded from Boston Hill for 17 years and the vegetation has come back dramatically From: DANA BATES [mailto:[email protected]] 4. Ken noted that bats have decreased since the barbed wire was put into the shaft entrances. It was my impression that he Sent: Sunday, January 13, 2013 4:43 PM would like to see more bats in the neighborhood. To: McGrath, Sarah, EMNRD 5. He is interested in a balanced approach to bat habitat preservation and safeguarding the open shafts/adits Subject: Boston Hill 6. He is alright with more signage cautioning visitors 7. He is aware of water runoff – Yankee creek?_ off of Boston Hill. 8. Fencing would decrease the use of ATV on Boston Hill- which he sees occasionally Hi Sarah, thanks for asking for input from the public. Here's my two cents... I understand we feel the need to improve 9. Ken would like signage for private property owners, because there is no clear delineation of private/public property things, but my position is that generally while we think we are improving something, we are in fact leaving a bigger mess for someone later ‐‐ Boston Hill being a good example of this. What is the "improvement" objective? Swing sets for the This report is assumed to be a true and accurate account of this communication unless notice to the contrary is kiddies or bulldozing and cementing mines under the name of safety? received within 10 calendar days of issue.
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Lana Idriss
My suggestion: don't do a damn thing. Why spend the money, use up energy and other natural resources to essentially From: cecilia stanford [[email protected]] get nowhere in the end. You can fix the area perfectly, but you can't fix people. Some folks just shouldn't be a part of Sent: Monday, November 19, 2012 9:20 AM the gene pool and are determined to eliminate themselves one way or another. If they don't do it on Boston Hill, they'll To: Ken Romig; [email protected]; [email protected] do it on the sidewalk downtown or in traffic. From a safety objective, maybe there should be a law against getting out Subject: boston hill of bed. Surely that would increase our safety level somewhat. To Whom It MY Concern, I guess if the government is compelled to do something then I suppose I could agree to a sign placed on your billboards that states something like, "If you step foot on this city property you automatically relinquish all legal rights to any I have recently become aware of the meeting that will take place today concerning possible claims whatsoever and if you get hurt you did it to yourself". use and reclamation of Boston Hill. Unfortunately I am out of town for the holidays, but can speak to this as a home owner, at the foot of Boston Hill, on the Cheyenne Trail Head. I am Dana Bates also a frequent hiker there.
It is my opinion the nothing should be done on the Hill, and find that the trail work done by Aldo Leopold is a great way to not only maintain and improve trails, erosion, etc, but is accomplished locally with our own youth. I have also seen Youth Core workers there, again local young people.
I am not aware of any accidents or deaths related to the pits or caves. Accidents that have occurred seemed to be of the type that can occur on any trail, and that is why they are called accidents.
Please use these state resources elsewhere, where the need may be greater.
thanks, Cecilia Stanford
Lana Idriss
From: Angela Flanders [[email protected]] Sent: Sunday, January 13, 2013 9:47 AM To: Ken Romig Subject: Boston Hill
Dear Sir,
As a hiker, I thought I would take the opportunity to say that I think there are too many trails on Boston Hill. There are many trails dissecting trails, completely unnecessary for anyone's convenience, or for any reason I can imagine. As you know, preservation includes erosion control, but also conservation of plant, animal, bird, lizard, insect, micro organism, etc populations. They all work together, and they all begin to fall apart when any component is too greatly disturbed. Boston Hill is a great resource for our community! Thank you for your concern and involvement in its maintenance.
Angela Flanders 808 C Street, Silver City
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Lana Idriss
From: marsden [[email protected]] Sent: Friday, July 26, 2013 1:14 PM You are right that the most hazardous feature is the Legal Tender mine and the owner has lots of liability associated Ken Romig To: with people visiting the site. Fending is not capable of keeping people out of the mine. We are suggesting more Subject: Re: Community Field Design Meeting for Safeguarding Abandonded Mines on Boston Hill durable closures. I hope you have a chance to help us at the Field Design Meeting.
dear Ken, Thanks i would ask, if you personally were faced with a situation as you describe where you were personally responsible and ken liable, and your deligee, in this case WNMU, but it could be anyone, due to any cause, fell down on the job, would'nt you immediately or soon upon learning of non performance, have engaged a substitute ? your agency has made a report that alleges "extreme danger to the public" and yet , after many months and now, apparently after many years of having known about WNMU's failure to perform, is still not putting into place temporary if From: marsden [mailto:[email protected]] not completely adequate protection ? oil refineries, industrial sites, and many working mines i've observed have properly Sent: Friday, July 26, 2013 10:03 AM maintained chain link fences and no trespassing signs. To: Ken Romig is there something amiss here? Subject: Re: Community Field Design Meeting for Safeguarding Abandonded Mines on Boston Hill maybe this old mine feature isn't dangerous as your agency's report alleges, and the fencing should be removed. from my last visit to the site to remove trash largely consisting of clothing, beer, soda cans, snack food packaging, i saw dear mr romig, tons of footprints, indicating popular and recent use. the gravest mine features are on private land, and there's a chain link fence surrounding the site. a half a year has passed since this yours feature, already enclosed, was identified as extremely dangerous. isn't your department and the landowner wide open for great herbie liability if some serious or lethal accident were to happen because the fence, which could be easily repaired and monitored and ----- Original Message ----- maintained isn't ? From: Ken Romig yours To: marsden herbie marsden Sent: Friday, July 26, 2013 11:06 AM silver city, NM Subject: RE: Community Field Design Meeting for Safeguarding Abandonded Mines on Boston Hill ----- Original Message ----- Hi Herbie‐ From: Ken Romig To: Ken Romig WNMU was the organization that was tasked to maintain the fencing and since the death of the biology professor who Sent: Thursday, July 25, 2013 2:10 PM studied bat habitat, in the mines the fences have become more and more open to intrusion. It is the general opinion of Subject: Community Field Design Meeting for Safeguarding Abandonded Mines on Boston Hill many residents in Silver City and the landowners that the fencing will be breached and the site trespassed if fencing and signage only are used to deter visitors.
Ken
From: marsden [mailto:[email protected]] Sent: Friday, July 26, 2013 10:46 AM To: Ken Romig Subject: Re: Community Field Design Meeting for Safeguarding Abandonded Mines on Boston Hill
dear ken, i don't agree with your assertion that fencing is not capable of keeping people out.... i lived near the site in the mid 1970's and while the fence, even then had one or 2 holes in it , it was signed with no trespassing signs and was largely intact. no one to my knowlege , ever made any attempts to provide service to the enclosure to keep it intact and properly understood sinage in place. what are we talking about here ? a few thousand dollars a year to keep a fence in order as opposed to a human life ? tell me how much money was spent on assessing the hazards on the hill and convince the parents of a dead child that thay haven't suffered an avoidable loss due to obvious negligence. ----- Original Message ----- From: Ken Romig To: marsden Sent: Friday, July 26, 2013 10:09 AM Subject: RE: Community Field Design Meeting for Safeguarding Abandonded Mines on Boston Hill
Thanks you for your message Herbie‐
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Ken Romig, ASLA - Associate Dekker/Perich/Sabatini
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18 19 Safeguarding Abandoned Mines on Boston Hill | Silver City, NM Safeguarding Abandoned Mines on Boston Hill | Silver City, NM
Lana Idriss Lana Idriss
From: Kretzmann, John, EMNRD [[email protected]] From: Timothy Karpoff [[email protected]] Sent: Friday, January 18, 2013 11:55 AM Sent: Tuesday, November 20, 2012 5:57 PM To: [email protected] To: [email protected] Cc: Ken Romig; McGrath, Sarah, EMNRD; Moiola, Lloyd, EMNRD Cc: Ken Romig; Jim Coates Subject: FW: Boston Hill Subject: RE: Boston Hill comment
Dear Ms. Papin, Ms. Eisenhower,
Thank you for your message. I will definitely inform you of all meetings and developments regarding the Abandoned Mine Thank you for your encouraging words. Boston Hill is a special place and the Abandoned Mine Land Program's planning effort regarding Boston Hill, and appreciate your interest. Thank you for your responses to the Land Program's intention is for its work to improve conditions there for plant and animal questions on the introductory handout, too. life. Re: your last question: I really don't know. In fact, you could help me out and let me know why you and others think that The Abandoned Mine Land Program and its contractor, Dekker Perich Sabatini, will keep you anything has seemed secretive. Here's what I know: I started calling representatives of local groups (trails group, County informed of upcoming meetings and events in the planning process. Planner, bike group, walkability advocates, Boston Hill area, etc.) in the last week or so to ask if I could say hi (or introduce myself), let them know about the project, and ask them for their advice on how to proceed. I know that John A. Kretzmann, P.E. Councilor Jose Ray went further and was nice enough to invite some of his neighbors and set up the Senior Center as a Program Manager place to meet. I also know that John Crow put something on his website and a couple people responded, and at least one NM Abandoned Mine Land Program person assumed that something was being planned secretly. I put the handout together because I gathered that a larger 1220 S. Saint Francis Drive group might be coming to the Senior Center. Santa Fe, New Mexcio 87505 505.476.3423 Beyond that, I'd appreciate knowing what's been a secret. Nothing has been planned, no information has been gathered 505.476.3402 fax (other than the notes from yesterday's meeting, which I took because people were offering suggestions). We'll be sure to [email protected] talk to groups and have one or more community meetings when the actual planning happens. I have just been trying to inform people, not keeping them from being informed. So, any information you can provide to clear that up would be great. Thanks!
‐‐‐‐‐Original Message‐‐‐‐‐ Best, From: McGrath, Sarah, EMNRD Tim Karpoff Sent: Tuesday, January 15, 2013 8:04 AM To: Kretzmann, John, EMNRD Timothy F. Karpoff Subject: FW: Boston Hill 1811 Tapia SW Albuquerque, NM 87105 FYI 505-877-6041 505-280-4797 mobile ‐‐‐‐‐Original Message‐‐‐‐‐ From: Jane Papin [mailto:] Sent: Monday, January 14, 2013 7:47 PM From: [email protected] To: McGrath, Sarah, EMNRD Subject: Boston Hill comment Cc: [email protected] Date: Tue, 20 Nov 2012 10:03:47 -0700 Subject: Boston Hill To: [email protected]
Hi Tim, Hello Sarah and Ken, I'm writing to request being on the list to be notified of all meetings and developments regarding Boston Hill. I hope you'll let me know that this will be done. Thank you both so much for all you do to protect Boston Hill. I'd also like to respond to those questions that were asked at yesterday's meeting. I do not use Boston Hill very much for hiking, and I have no concerns or hopes for the Hill at this time. I live several blocks from the Spring Street entrance and walk on the Hill usually five times The value of the Hill to me is its natural state. My expanse of south-facing windows (no windows on nature in a week. I love Boston Hill and its plant and animal life. I'm concerned about all the extra other directions in my house) look up to the hill, and this view is very important to me. paths that have been worn and uncaring cyclists running over plants. I have just one question - in common with many others - and that is: why the process of gathering information has seemed so secretive. Thank you for staying in touch with me. Thank you. Jean Eisenhower Jane Papin 1 1
20 21 Safeguarding Abandoned Mines on Boston Hill | Silver City, NM Safeguarding Abandoned Mines on Boston Hill | Silver City, NM
Lana Idriss Lana Idriss
From: Nancy Cliff [[email protected]] From: timkarpoff [[email protected]] Sent: Sunday, August 11, 2013 1:37 PM Sent: Tuesday, March 26, 2013 1:52 PM To: Ken Romig To: [email protected] Cc: [email protected]; [email protected] Cc: [email protected]; Ken Romig; [email protected]; [email protected]; Subject: Boston Hill [email protected]; [email protected] Subject: RE: Boston Hill
Gentlemen: Spike, I appreciate the time you spent introducing the community to AML this week. I am concerned about what I consider the over‐emphasis on the Legal Tender mine issues, Thanks very much for your thoughtful message and ideas. I'm passing it on to a few people on the team. including anticipated roof collapse and bat habitat. While I recognize this property is part of your study area, it is not an active component of the trail system. I don't want to get ahead of the planning too much and comment on the merits of each suggestion, but I'll make Frankly, if the whole thing imploded it would solve most of the current problems, especially its use as party central for the bored youth of the area. Also it might afford some much a couple general remarks. First, I think the team agrees that the "rough" look should be preserved. This is needed parking for downtown residents and businesses. because of our general low-impact orientation, and because of what we've heard from community members. What is the status of negotiations with the owners of the Legal Tender Mine, assuming that you've been talking with them? Second, the question you raise about safety is a key one. What is "safe," and how do we support safe situations and behavior without overly restricting people? This will be a question we'll be wrestling with during the I suggest the next set of meetings focus on other issues, although they may not be as planning. relevant to the safeguarding mission. My primary concerns center on trails ‐‐ their ease of use ‐‐ and maintaining the status quo in terms of number and condition. So, there's a lot of work to do regarding concepts and definitions and how to translate that thinking into design. I've commented previously about the proliferation of trails which I see as an environmental threat: it increases the potential for erosion and for harming fragile grasses and other soil We were grateful for the participation and the interest in helping out that we saw at the meeting. I went over to retention mechanisms. the Wellness Coalition the next morning and thanked the YCC for their interest--those folks were really great at The entire Boston Hill Open Space/Trail System is so rich with history, environmental and the meeting and want to stay involved. geological features and culture. I would recommend doing a series of interpretive signs (not just directional) about what it used to be like and how it came to be a public asset. I hope to see you at future meetings on Boston Hill. Thanks again for your suggestions. People should know, for instance, that there was a small gauge railroad that went through the south end, including what it was intended for/how long it lasted, etc. Best, Tim Karpoff I think removing chain link fence should be at the very bottom of the priority list. The initial material cost and installation was likely pretty steep; while the fences are Sent from my Verizon Wireless 4G LTE Smartphone unsightly, at least they provide information about hazards. Even though they've been breached, I suspect that would provide some defense against accident and/or injury (the fence does not eliminate liability but it might mitigate). There are other matters tangential to the main mission. I think bat habitat is one of these, as are increasing the number of parking spaces at trailheads, removing non‐native plant ------Original message ------species, and making good durable directional signage. From: Spike Flanders
Tim Karpoff:
Just a quick note to let you know that your recent meeting convinced me that there is room for improvement on Boston Hill. My original thoughts were that if it ain't broken, why fix it? I have changed my mind. I do have a number of thoughts and concerns, however.
One concern is that Boston Hill may lose some of its "roughness" charm. This is difficult to explain. Boston Hill is special. It doesn't need to be like other parks. I think the sort of unrefined, unpolished, feel that it now
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22 23 Safeguarding Abandoned Mines on Boston Hill | Silver City, NM Safeguarding Abandoned Mines on Boston Hill | Silver City, NM
Appendix C: Stakeholders List
BOSTON HILL AML PROJECT has should be preserved, if possible. I do not think that we need paved paths. I do not think that we need steps STAKEHOLDERS LIST cut into the rock. I suppose the deep mine shafts need to be filled. I do think that the old prospects need to be Updated 11‐4‐13
left alone. If someone wants to investigate them, why not let them? They aren't very deep. My guess is that NAME ORGANIZATION/TITLE CONTACT NAME PHONE INFO EMAIL NOTES/OTHER the danger would be very low. If there was a problem with "falling rocks" I would think that the prospect could Town of Silver City Community Development Peter Russell 575‐534‐6374 be inspected and any problem remedied. Utilities Manager Bud Malany GIS Planner David Lawerence Public Works Peter Peňa 575‐388‐4640 [email protected] I think that just about all the fences need to be removed. They are not doing what is expected. Most have been Town Manager Alex Brown 575‐534‐6358 [email protected] compromised. The haven't been ,maintained in years. As they are now, they are useless. They certainly do not Museum Jessa Tumposky 575‐538‐5921 [email protected] Mayor James R. Marshall 575‐534‐6346 [email protected] keep people out of any mines. And why should we keep people out of the mines? I think we (or you) just have Councilors Cynthia Ann Bettison 575‐538‐3887 [email protected] to minimize the danger. People have an interest in these mines and do want to go into them. My guess is there Councilors Pauline N. Hassler‐Cook 575‐654‐2427 [email protected] Councilors Jose A. Ray, Jr. 575‐313‐5116 [email protected] would be more injuries on the trails than in the mines. Councilors Michael S. Morones 575‐313‐9787 [email protected] OSM AML oversight OSM Erica Foley 303‐293‐5038 [email protected] Main Street Manager 575‐534‐1700 I suppose some signage could be helpful. What might the signs say? "Danger, Precipitous Cliff Nearby, Stay Arts & Culture District Non‐profit (under Main Street) Julie Minicucci 575‐538‐5560 away". Sometimes signs like this draw people to look over the edge.This leads me to think that any overhangs Gila Resources Information Project Non‐profit Andrew Lindoff 575‐538‐8078 [email protected] Allyson Siwik 575‐538‐8075 [email protected] should be eliminated. I think it would be a problem keeping the signs where they belong. My own thoughts are Audubon Society Non‐profit Dennis Beaver 575‐534‐1115 [email protected] Native Plant Society Non‐profit Russ Kleinman [email protected] that we do not need fences or walls or warnings. Why prevent people from looking over the edge? As one of Bureau of Land Management AML Coordinator Chris Teske 575‐525‐4323 [email protected] the participants in your meeting pointed out; there are all kinds of places for people to look over the edge at the Grant County Planning Anthony Guiterez 575‐574‐0007 [email protected] Mimbres Region Arts Council Director Fay McCallmont 575‐538‐2505 [email protected] Grand Canyon. Even closer to home is the Lower Box with plenty of cliffs and no warnings. What I find Grant County Trails Group informal community group Michelle Giese 575‐538‐5873, ext. 121 interesting is how "safe" do we have to be and how "safe" do we want to get? Gila Conservation Education Center non‐profit Barbara Nuzzi 575‐388‐8266 Grant County Bicycle Advocacy Group Co‐chair Jaime Thompson 575‐534‐9040 [email protected] Grant County Archeological Society President Bill Hudson 575‐536‐3902 [email protected] I would suggest that as many mines as possible remain open. People find these mines fascinating and definitely Grant County Rolling Stones President Kyle Meredith 575‐538‐5706 [email protected] High Desert Humane Society Gigi Shoaf 575‐538‐9261 [email protected] want to explore them. Most are as safe as walking on the trails. Apparently you have identified "falling rocks" Society of Mining Engineers Michael Linley as one of the biggest dangers. I would think tjhis, or any other danger, could be eliminated or, at least, WNMU Chair, Natural Sciences Dept. Jeffrey Hill 575‐538‐6227 [email protected] minimized. President Joe Sheppard 575‐538‐6238 Director of Outdoor Education Kathy Whiteman [email protected] Friends of Boston Hill USFS Bob Schiowitz 575‐388‐2325 I am concerned, of course, about the expenses involved. I would like to suggest that as much local hedflp as Citizen Architect Kevin Robinson 575.574.7677 [email protected] possible be involved. The YCC people, for instance, seemed to show quite a bit of interest. Possibly other Artist Micheal Metcalf 575.388.9789 Surveyor Rick Miller 575‐388‐2252 students would want to get involved. Jim Gruwell 575‐313‐3126 [email protected] Gail and Emmanuel Stamler 575‐535‐2383 Joe, Senovia, Richard Ray 575‐538‐2549 I would suggest that the city acquire more land adjacent to Boston Hi9ll. This certainly would be beneficial to Jeannie McLerie 575‐534‐0298 [email protected] the city residents. I would hope that you could present this idea to the city. Possibly this could be brought up Becky Smith 575‐534‐9808 [email protected] Ben Ortiz 575‐388‐1649 during your presentation to the city council on april 9th. Janey Katz 575‐388‐0888 [email protected] 575‐313‐6707 Marta Green & Rod Rees 575‐534‐1227 [email protected] Susie Siedentop 575‐534‐9103 I deo think you need to hold more public meetings. Bob Schiowitz 575‐388‐8201 [email protected] Herbie Marsden 575‐538‐5229 [email protected] Lita Furby 575‐388‐2733 I was happy to to see that the "no action" option is off the table. F. Dean Little [email protected] Bloggist John Crow 575‐538‐2664 [email protected] Gretchen Tatro 575‐534‐9620 Lastly, I think the idea of making Boston Hill some sort of tourist attraction is ridiculous. My own thoughts are Frank Drysdale 575‐534‐9658 [email protected] Nancy Cliff [email protected] that we have enough tourist attractions in the area and we do not need any more. I understand that some will Bruce McKinney [email protected] disagree with this. Azima Lila Forest 575‐574‐7805 [email protected] Jill Steidl 575‐538‐5756 Anne Hedlund 575‐597‐1906 [email protected] Thank you. Dana Bates 575‐313‐0079 [email protected] Sue Bean 575‐388‐3756 John Rawlins 520‐327‐3592 [email protected] C. N. "Spike" Flanders Robert Southworth [email protected] Ted Prescell 575‐519‐8375 [email protected] Pam Donohue 575‐574‐0332 [email protected] Wendi Oliveira [email protected] Boston Hill adjacent property owners Jim Gruwell 575‐313‐3126 ˂ 5 acres Gail and Emmanuel Stamler 575‐535‐2383 Gila river house Jose Ray (575) 313-5116 [email protected] Jeannie McLerie 575‐534‐0298 [email protected] Kenneth Keppeler Becky Smith 575‐538‐5373 [email protected] Ben Ortiz 575‐388‐1649 Janey Katz 575‐388‐0888 [email protected] Marta Green & Rod Rees 575‐534‐1227 [email protected] Susie Siedentop 575‐534‐9103 2 Ira Guin 760‐256‐6122 760‐987‐1407
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Appendix D: Town Council Presentation
-
anager
M
anager
M
STAFF PRESENTERS Ken Romig, Dekker Perich Sabatini Perich Ken Romig, Dekker John Kretzmann, PE, AML Program
AML John John Kretzmann, PE, AML Program Sarah McGrath, Sarah McGrath, Project Manager
Land (AML) Program
TOWN OF SILVER CITY PRESENTATION CITY OF SILVER TOWN Abandoned of for Safeguarding the and Design Plan Mexico New City, Silver in Hill Boston on Mines 8, 2013 January NM ABANDONED MINE LAND PROGRAM
Mine
funded state program, formed through the passage of the Surface Mining Control Control theMining of the passage Surface through formed program, funded state - Act (SMCRA). (SMCRA). Act Project Overview
is a federally AML AML funding sunsets program in 2021. AML is funded through a tax on existing coal mined within a state. AML works AML works on abandoned hard mined withina state. coal on existing tax a AML isthrough funded and Reclamation and Reclamation rock mines (i.e. Boston Hill) when obvious hazards are apparent. AML has worked on in HillBoston AML has worked apparent. are when mines Hill) Boston (i.e.rock obvious hazards the past.
The New Mexico AML Program, part of the New Mexico Energy, Minerals, and Natural and Natural Minerals, Energy, part of the New Mexico AML Program, The New Mexico the of abandonedthroughout mines the reclamation addresses Department, Resources onproperty. both public and private state o o o The New Mexico Abandoned
26 27 Safeguarding Abandoned Mines on Boston Hill | Silver City, NM Safeguarding Abandoned Mines on Boston Hill | Silver City, NM historic historic
resulting from from resulting Restoration must must Restoration
health, safety and property from immediate hazards hazards immediate and property from safety health,
public from hazards that do not constitute immediate hazards. immediate do not constitute that hazards from public
lands and water degraded by historic mining practices. mining practices. by historic landsdegraded and water
ature of Boston Hill of Boston ature Restore Restore Protect the Protect rock mining AML and Boston Hill and Boston AML AML Priorities AML N - 2 : practices. Wildlife habitat Wildlife Hard Proximity to Silver City to Proximity Multiple landowners interests Diverse stakeholder oversight Federal and State structure Organizational o o o o o o o Characteristics Hill of Boston Characteristics Funding Limitations Limited Program Operations and Maintenance for constructed facilities constructed for and Maintenance Operations Program Limited Sunsets in 2021 Program Boston Hill Hill Landownership Boston facilitate the higher facilitate priority reclamation. Priority 1: Protect publicPriority 1: Protect mining 3: Priority Priority Priority • • The Unique • capacity unique funding and organizational AML’s • •
The AML program funding priorities: The AML program • • •
28 29 Safeguarding Abandoned Mines on Boston Hill | Silver City, NM Safeguarding Abandoned Mines on Boston Hill | Silver City, NM
- environmental .
archeology - data data and creation mgmt. structural engineering structural - - public outreach/facilitation community and civil liaison community - - Albuquerque Albuquerque
, ,
Environmental Inc Services, Environmental Recognizes landownership diverse Recognizes expertise local knowledge and Integrate design into Respect the legacy of mining action option No o o o o engineering Silver City Silver Durango Silver City Silver Silver City Silver City Silver Silver City Silver SUBCONSULTANTS Golder Associates, Associates, Golder Inc. Karpoff Associates & Ecosphere PE Joseph Gendron, Caspersen Engineering Caspersen Dos Rios Consultants, Inc.
PRIME Albuquerque AML AML Approach Dekker Dekker Perich Sabatini Planning Team
30 31 Safeguarding Abandoned Mines on Boston Hill | Silver City, NM Safeguarding Abandoned Mines on Boston Hill | Silver City, NM
Construction Assistance Construction
Plan Assessment
- - -
Phase 4 Phase I Phase 2 Phase 3 - Design Phase Research (biological, archaeological, historical) Research (biological, archaeological, a plan public meetings for Developing Regulatory framework Regulatory of Assessment hazards Public outreach landowners Interview Website public to engage strategy public outreach Develop Report GIS of mapping conditions existing stakeholders Primary a Develop schedule o o o o
o o o o o o o o o o o o - Planning Scope Develop plan a Develop Communicate Gather Information Gather Map
Pre
• • • •
Scope of Work Assessment
- Phase I
32 33 Safeguarding Abandoned Mines on Boston Hill | Silver City, NM Safeguarding Abandoned Mines on Boston Hill | Silver City, NM
ongoing ongoing
- -
ongoing -
ongoing – ongoing - Current MappingCurrent ongoing
profit groups
-
GIS GIS data integration Non Landowners Landowners Silver City Residents GIS assistance from from GIS and County assistancethe City Biological - History Archaeology of SilverCity City Manager of the Town Ongoing Regulatory framework Regulatory Research Mapping Interviews Reconnaissance Site
• • • •
Boston Hill Current Project Status
34 35 Safeguarding Abandoned Mines on Boston Hill | Silver City, NM Safeguarding Abandoned Mines on Boston Hill | Silver City, NM
design
into
ups of - ups improvements vision
community consensus Full Full Scale mock site design sessions- site with stakeholders . Hostpublic atone meeting least Develop Develop On Develop report for AML and community Interview stakeholders stakeholders Interview community Integrate D - D model the design Cost estimates Cost Refine design for bidding Prepare designs, elevations and sections engineers, design with Coordinate in experts biology, resources archaeological 3 o
o o o o o o o o o o Draft a Report Draft
Public Meetings Public and Field Design Meetings Sessions
• • Develop Schematic Schematic Design Develop
•
Plan
- Design
- Phase 2 Phase 3
36 37 Safeguarding Abandoned Mines on Boston Hill | Silver City, NM Safeguarding Abandoned Mines on Boston Hill | Silver City, NM
Assessment
Plan Construction Assistance Construction Design – - - – Summer, 2013 Summer, Spring, 2013 Completion in 2013 Completion March, TBD . . . . Phase 4 Phase 3 Phase 1 Phase 2 Monitor construction Monitor Review construction at substantial completion substantial at construction Review o o o o
• • Preliminary Schedule Project Preliminary
•
Boston Hill Construction Assistance
- Phase 4 Phase
38 39 Safeguarding Abandoned Mines on Boston Hill | Silver City, NM Safeguarding Abandoned Mines on Boston Hill | Silver City, NM
Appendix E: Techinical Memorandum
TECHNICAL MEMORANDUM
Date: March 15, 2013 Project No.: 123-80045 To: Ken Romig Company: Dekker/Perich/Sabatini
From: Douglas Romig, CPSS cc: Email: [email protected]
RE: TECHNICAL REVIEW OF BOSTON HILL OPEN SPACE ENVIRONMENTAL CHARACTERIZATION DATA
1.0 INTRODUCTION Boston Hill is an abandoned mine lands property purchased by the Town of Silver City, New Mexico in 2000 as an open space preserve. It was the Town’s first open space acquisition and is located adjacent to, and accessible from, the historic downtown area. The area serves the Silver City community as a
recreational amenity.
Boston Hill is a former iron and manganese mining district. The first mining claim was filed for Boston Hill in 1870 after silver chloride ore was discovered at the Chloride Flat area west of the Boston Hill (DE&S 1999). Soon after Silver City was connected to a railroad in 1883, manganese ore, including silver- bearing manganiferous ore, was mined from Boston Hill and shipped by railcars. In 1893, the price of
silver dropped, prompting the mining of iron ore at the site. In 1916, as most of the silver was mined out, the mining of manganiferous iron ore increased in order to meet the needs of the steel industry.
Underground mining ceased after World War II though ore continued to be mined from the surface cuts across the site and continued until 1980. Figure 1 shows the locations on the major mining claims in the Boston Hill mining district.
Mining in the area left highwalls, shafts, adits, open stopes and underground workings that may represent public safety hazards. The New Mexico Abandoned Mine Land (AML) Program, an agency of the New Questions? Mexico Energy, Minerals and Natural Resources Department, is conducting a planning effort to safeguard hazardous conditions that are a result of historic mining on Boston Hill. The AML Program has initiated a for this opportunity. public outreach process to reach general community agreement about an action plan to: a) reduce public safety hazards in the Boston Hill area; b) protect wildlife habitat associated with mine features; and c) improve recreational amenities in the area.
Dekker/Perich/Sabatini (DPS) has been hired by the AML to lead the planning effort. DPS has initiated contact with several community members and groups to determine the level of interest in safeguarding Our thanks to the Mayor and Town Council thanksOur to Mayor the andTown public hazards at Boston Hill. DPS is also evaluating environmental conditions at the site and assembling available site characterization data for public presentation and comment. tm review of boston hill phase 2 031513.docx Golder Associates Inc. 5200 Pasadena Avenue N.E., Suite C Albuquerque, NM 87113 USA Tel: (505) 821-3043 Fax: (505) 821-5273 www.golder.com
Golder Associates: Operations in Africa, Asia, Australasia, Europe, North America and South America Golder, Golder Associates and the GA globe design are trademarks of Golder Associates Corporation 40 41 Safeguarding Abandoned Mines on Boston Hill | Silver City, NM Safeguarding Abandoned Mines on Boston Hill | Silver City, NM
Ken Romig March 15, 2013 Ken Romig March 15, 2013 Dekker/Perich/Sabatini 3 Project No. 123-80045 Dekker/Perich/Sabatini 2 Project No. 123-80045
protocols for completing ESA investigations are provided by American Society for Testing and Materials Figure 1. Approximate locations of Boston Hill mining claims (from NMED, 1999) (ASTM), standard practice E1903-11.
As part of its Phase II investigation, NMED conducted environmental sampling of soils, sediments, and waste rock materials at the site to provide a preliminary assessment of metal concentrations. NMED’s objectives of their Phase II ESA was to determine whether metal concentrations were elevated above that of surrounding, unmined (i.e. background) areas and presented potential exposure risks. Groundwater samples were also collected from two nearby wells to determine whether groundwater contamination existed and whether it could be attributed to the site.
The NMED found isolated occurrences of certain heavy metals at elevated concentrations above background, though concentrations were not sufficient to pose a threat to human health from exposure resulting from recreation use. Groundwater samples taken from nearby wells also had metal concentrations above water quality drinking standards. These results were provided to Silver City to assist the Town with its decision to purchase Boston Hill property. Following a presentation from DE&S and NMED, the Town unanimously agreed to purchase the property as an open space.
Some community members have expressed concerns over high metal concentrations reported for waste rock materials at the site. DPS directed Golder Associates, Inc. (Golder) to provide a technical review of the Phase II ESA to better understand the character of the site and evaluate potential human health risks. This technical memorandum provides a review of the methods and data reported in the Limited Phase II Sampling Report (NMED, 1999). Technical reviewers are Golder senior scientists who are familiar with the Silver City area as well as these types of environmental investigations at historic mine sites. Reviewers include Tom Stapp, Senior Chemist; Doug Romig, Senior Soil Scientist; and Clay Kilmer, 1.1 Background Senior Hydrogeologist. Prior to the Town’s purchase of the property, Duke Engineering & Services (DE&S) was retained by the
New Mexico Environment Department (NMED) to perform a Phase I Environmental Site Assessment This memo provides a general summary of the Phase II report and gives additional context to the site (DE&S 2000). In addition, a partial Phase II investigation of the site was performed by the NMED (1999) environmental conditions relative to casual recreational use as the AML and the Silver City community under the State’s Voluntary Remediation Program for brownfield properties. considers possible safeguarding activities. Section 2 provides a description of NMED’s scope of work and a summary of the 1999 site assessment results. Section 3 discusses several data quality issues related to Environmental Site Assessments (ESAs) are commonly used to identify potential or existing the waste rock sampling, analytical methods and results. A discussion of NMED’s human health risk environmental liabilities for commercial real estate transactions. A Phase I ESA is typically a combination assessment is given in Section 4. Section 5 reviews the results of the groundwater data provided in the of: 1) an site visit to document current conditions and identify any hazardous substances (i.e. asbestos, Phase II report. Finally, Golder provides some general conclusions petroleum contaminated soils, mold, etc.); and 2) search available public files including title examinations and review of other historical documents including aerial photos of the site. Phase II ESA investigations 2.0 SUMMARY OF 1999 ESA are often conducted when the Phase I ESA determines the site may be contaminated. Phase II ESAs NMED conducted a limited Phase II Evaluation of the Boston Hill site in September 1999 to determine if frequently involve collecting samples of soils, groundwater and/or building materials for laboratory surface soils at the site contained levels of metals elevated above that of surrounding, unmined (i.e. analyses to determine contamination levels. Phase II assessments are generally not exhaustive, but background) areas as well as health-based screening levels promulgated by the Environmental Protection intend to provide degree of confidence whether hazardous substances are present at a site. Standardized
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Ken Romig March 15, 2013 Ken Romig March 15, 2013 Dekker/Perich/Sabatini 4 Project No. 123-80045 Dekker/Perich/Sabatini 5 Project No. 123-80045
Agency (EPA). NMED also collected groundwater samples from two nearby water wells to determine Characteristic Leaching Procedure (TCLP). NMED states they took a conservative approach to site whether groundwater contamination existed and if it could be attributed to the site. Figure 2 shows the sampling by biasing sample locations in areas that potentially contained higher metal concentrations. distribution of sample locations. For XRF results, a significant number of Boston Hill samples had metal concentrations that exceeded Figure 2. Boston Hill Phase II ESA soil and groundwater sample locations (from NMED, 1999) three times the mean background levels. Further, XRF analyses indicated that iron, manganese, lead, and arsenic may exceed human health medium-specific screening levels for an industrial exposure scenario (EPA, 1999). However, the confirmational laboratory data indicated that metal concentrations were as much as an order of magnitude lower than the XRF results. Generally laboratory results were found to be below health-based screening levels associated with an industrial-use risk scenario. Thus, NMED considered their risk analysis conservative due to the uncertainties associated with the use of the XRF. Based on the results of the soil analyses, NMED concluded:
• “A significant number of the analytical results exceeded three times the mean background concentrations for this study; however, metals concentrations in the soils generally appeared to be below screening levels associated with an industrial use scenario for the site.
• Soils contaminated with lead were encountered in the area of the Comanche Pit where concentrations for lead exceeded concentrations for an industrial exposure scenario. Minor cleanup of soils will likely be necessary in this area.
• Contaminated soils appear to be migrating offsite during precipitation events. Additional work may be necessary to prevent this migration.”
Groundwater samples collected from wells on or near the site were found to contain levels of beryllium, iron, thallium, and manganese that were slightly elevated above NMWQCC or EPA standards. However, NMED reported that both samples were unfiltered and one well may have been sampled incorrectly (insufficiently purged) to ensure a representative sample of groundwater. Based on the results groundwater analyses, NMED concluded:
• “The number of ground water samples collected was not sufficient to determine if elevated metals levels in ground water can be attributed to onsite mining activities. Additional sampling including the installation of monitoring wells would be necessary to characterize the shallow ground water in this area.
• Although neither of the wells that were sampled is presently used for drinking water, usage could change in the future. NMED recommends that these wells not be used for drinking water.”
3.0 WASTE ROCK ANALYSES Soil and waste rock materials were tested using an x-ray fluorescence (XRF) spectrometer to evaluate Golder’s primary concern with the Phase II ESA is the use of the XRF data to make definitive conclusions metal concentrations. The XRF analysis is a field screening method that has the benefits of providing about metal contamination on the site, particularly when the concentrations are poorly correlated with quick results at a low cost, compared to laboratory analytical results that are more accurate, but more laboratory analyses. NMED expressed a similar cautious tone relative to the XRF results and qualified costly with a longer turnaround time. Approximately one-third of the samples were sent to the laboratory their conclusion that the site did not present a significant exposure risk. While the XRF data can be a for confirmational analyses, including both total metals analysis and extractable metals using the Toxicity useful when properly calibrated, NMED’s report indicates there are several problems with interpretation.
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Ken Romig March 15, 2013 Ken Romig March 15, 2013 Dekker/Perich/Sabatini 7 Project No. 123-80045 Dekker/Perich/Sabatini 6 Project No. 123-80045
reported compared to total concentrations. In many cases, XRF data are two orders of magnitude greater In this section, we evaluate XRF instrumentation and calibration, spectral responses, data quality, and than totals measured in the lab. sample heterogeneity and preparation related to the interpretation of metal concentrations reported at
Boston Hill. The relative percent difference (RPD) is a measure of variability between laboratory and XRF results. Golder calculated RPDs for metals with confirmation analysis (Table 1). Data quality objectives set by the Golder regards the XRF data presented in the NMED report as acceptable from a gross screening effort EPA require RPDs for XRF data compared to confirmation samples to be less than or equal to 30% to used to identify metals that may be elevated above background. Inaccuracies do exist, particularly for the accept XRF measurements (EPA SOP, 1995 and EPA, 2007). Only a few Boston Hill samples met the key elements of iron and manganese, due to the performance issues with the XRF spectrometer including data quality objectives for barium, copper, manganese, lead and zinc (Table 1). Generally, samples with spectral peak overlap, calibration to a simple rather than a complex matrix, and sample heterogeneity. low RPDs were associated with low to moderate total metal concentrations. However, the use of an XRF unit as a screening instrument usually precludes such detail. Improvements
could be made to better prepare the samples and calibrate the instrument to site conditions. That said, Table 1. Relative Percent Differences for Metals in Boston Hill Soil Samples the responses of the XRF unit as a screening device in NMED’s study are skewed to be more protective Metals Symbol Relative Percent Difference when compared to industrial screening exposure guidance Silver Ag 185.8 to 196.9% Arsenic As no samples with both XRF and total metals data 3.1 XRF Spectrometer Barium Ba 12.8 to 113.6% Most XRF spectrometers operate by exposing soil matrices to radioactive materials contained in the Cadmium Cd 196.7 to 196.7% instrument. The radiation excites atoms of the elements being reported so that electrons are expelled Copper Cu 17.2 to 178.1% from orbital shells around the atom. Light (fluorescence) is then emitted when the electrons re-enter the Iron Fe 36.6 to 167.3% Mercury Hg 199.7 to 199.7% orbital shell. The XRF detector reads the fluorescence by measuring both the wavelength and the number Manganese Mn 27.1 to 181.3% of photons per unit time. The instrument is then able to determine the specific elements based on their Nickel Ni 197.3 to 198% characteristic spectral signature which corresponds to the wavelength response and elemental Lead Pb 2.5 to 132.9% concentrations in the sample which is related to the photon count rate. Thallium Th 92.4% Zinc Zn 1.7 to 90.2% The instrument used to perform field XRF surveys at the Boston Hill site was a Spectrace Model 9000 (S- 9000). The S-9000 spectrometer was an early entry to the market for rapid screening metals in soil, as well as other important applications (lead in paint, etc.). Multiple improvements have been made to XRF The following subsections describe how some issues can lead to relatively large differences (high RPD) in instrumentation since the S-9000 was introduced including advances in detectors, software, and sample the reported data. preparation protocols to improve instrument response and accuracy. 3.2.1 Overlapping Spectral Response At the time of NMED’s study, the S-9000 was capable of reporting most metal concentrations as long as Limitations in instrument resolution and matrix effects may cause problems analyzing some elements. soil matrices were not complicated. But the mineralized materials at Boston Hill are not simple and the Under certain conditions, spectral responses may overlap and make it difficult to determine accurate calibration algorithms used to process the S-9000 detector responses were poorly adapted to the concentrations or discern one metal from another. For example, manganese is especially high in RPD, complex soil matrices. Golder suspects that S-9000 was inefficient in identifying both the spectral peaks owing to the tight grouping of spectral lines for manganese, iron, and chromium in an XRF response. and overestimating metal concentrations. These issues are discussed in detail below. When relatively high levels of iron exist (>10,000 mg/kg), overlapping spectral lines can skew the ability of the instrument software to adequately separate iron from manganese, and concentrations can become 3.2 XRF Metal Concentration Data Quality inaccurate. X-ray florescence results for 26 metals are tabulated in Tables A-1 and compared to 23 or 24 total metal analytes from the confirmation laboratory results (Appendix B). In general, recorded XRF data does not The XRF also appears to be overestimating lead values by a factor of about 2. Inaccuracies can be compare favorably with laboratory totals and there is a distinct trend towards higher XRF concentrations reported because arsenic and lead compete strongly on the XRF when concentrations of either one
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Ken Romig March 15, 2013 Ken Romig March 15, 2013 Dekker/Perich/Sabatini 8 Project No. 123-80045 Dekker/Perich/Sabatini 9 Project No. 123-80045
exceed values of 200 to 500 mg/kg. However, XRF responses for arsenic values did not compare to The precision and accuracy of both XRF and laboratory analysis is greatly improved when soils are dried, laboratory values, particularly sample BHS011 where arsenic was not detected in the confirmational sieved, and ground to a uniform size prior to testing (EPA, 2007). Sample preparation methods for the testing despite a high XRF reading. Errors associated with these spectral interferences may be the case Boston Hill soils were not detailed beyond the application of a bench test for separation of particle sizes for several samples including BHS008 and BHS005. (Table A-2). More robust sample preparation procedures may have lowered the RPD of XRF verses laboratory results. Finally, several metals including titanium, strontium , zirconium, molybdenum, rubidium, tin, and uranium are not reported by the laboratory, yet detectable concentrations for titanium, strontium and zirconium 4.0 HUMAN HEALTH RISK ASSESSMENT were reported for the XRF. Therefore, single XRF response of uranium in sample BSH005 cannot be Human health risk assessment according to the EPA is the process to characterize the nature and confirmed. Golder believes the uranium response for this sample could be associated with misidentified magnitude of health risks to humans (e.g., residents, workers, recreational visitors) who may be exposed spectral peaks from the presence of naturally occurring strontium or zirconium. to chemicals contaminants, now or in the future.” Risk is dependent on the following factors:
3.2.2 XRF Calibration • How much of a chemical is present in an environmental medium (e.g., soil, water, air), NMED was not specific regarding the calibration of the XRF instrument, except to indicate they used • How much contact (exposure) a person or ecological receptor has with the contaminated standard protocols. There is no disclosure in the report that “empirical” calibrations were employed, thus environmental medium, and Golder presumes the NMED used a simple or benign matrix to calibrate the S-9000. An empirical • The inherent toxicity of the chemical. calibration of the XRF would have required up-front characterization of site soils by laboratory methods and thereby improve the capability on the instrument. Empirical calibrations use known metal The EPA has developed exposure scenarios that are generally based on long-term (chronic) exposure to concentrations in a sample that are then correlated to instrument response to reduce RPD. hazardous substances and assume that exposure comes through the following pathways; ingestion of contaminated soil, inhalation of contaminated soil particles, inhalation of volatile chemicals, and It is often not practical to empirically calibrate XRFs for screening level assessments such as the one absorption of contaminants through the skin. The difference between the residential and industrial conducted at Boston Hill. Thus, for preliminary screening investigations the practice of conservatively exposure scenarios used in the Phase II ESA has to do with duration and method of exposure. The comparing 3X background data to site soil responses is commonly employed. However, due to the issues industrial scenario assumes exposure for eight hours a day, five days a week and puts more emphasis on stated previously with the S-9000, reported high concentration in background samples may also be inhalation rather than ingestion. The residential scenario assumes that a child is exposed, places more affected by the simple matrix calibration. emphasis on ingestion, and uses longer exposure periods.
3.2.3 Sample Heterogeneity and Preparation The industrial exposure scenario used by NMED considers a longer duration than would be expected for The largest increase of RPD between laboratory data and XRF results is also associated with the recreational exposure and therefore gives a conservative indication of risk to human health. Tables 5 and heterogeneous nature of the samples. After the XRF data was recorded, site soils were mixed and 6 of the Phase II report compares Boston Hill XRF results are to EPA Region VI Human Health Medium- submitted to the fixed laboratory. This procedure would have likely affected the precision on the XRF Specific Screening Levels in both residential and industrial worker site use scenarios (EPA 1999). tested soil compared to the fixed laboratory analysis. Because of the issues related to XRF data quality discussed in Section 3, Golder believes it is more To address this, NMED attempted to draw a correlation between grain sizes and XRF concentration of appropriate to evaluate potential exposure risks using laboratory data for total metal concentrations. elements for the samples at Boston Hill (NMED, 1999; Table A-2), though no discussion was provided in Additionally, recreational use exposure scenarios have been developed since NMED completed its their report. Table A-2 illustrates a general trend towards higher XRF concentrations associated with investigation. In this section we will discuss human-health risks at Boston Hill based on these newer smaller particle sizes compared to larger sand grains. This is characteristic of a heterogeneity effect guidance for recreational uses. where more intense fluorescence is detected on fine materials (clays and silt sized particles) and a less intense fluorescence realized with coarser grain sizes.
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Ken Romig March 15, 2013 Ken Romig March 15, 2013 Dekker/Perich/Sabatini 11 Project No. 123-80045 Dekker/Perich/Sabatini 10 Project No. 123-80045
RMC are considered to pose a low to moderate risk; these occurrences may pose a chronic threat. Media 4.1 Exposure Scenarios concentrations exceeding RMCs by more than 10 are considered to pose a high risk and those exceeding Golder believes the casual recreational uses such as hiking, mountain bike riding and bird watching at RMCs by 100-fold are considered to pose an extremely high risk for humans. Based on lab data Boston Hill are quite different from residential and industrial exposure scenarios presented in the ESA presented in the ESA, only one sample presented a low risk to human health for lead. because recreational users would be onsite infrequently and for shorter periods of time. More appropriate
exposure scenarios have been contemplated by the Bureau of Land Management (BLM) for occasional Table 7 of the Phase II report presents selected metal concentrations (Manganese, iron, lead, and use of land impacted by mining. The BLM established risk management criteria (RMC) for heavy metals arsenic) based on laboratory analyses and compares them to EPA industrial and residential exposure on mining sites on Public Lands as they relate to recreational use and wildlife habitat (BLM 2004). The scenarios. In their evaluation, NMED found only one sample to have lead concentrations to above the RMCs were developed using available toxicity data and EPA exposure assumptions. The BLM EPA guidance. We are uncertain why NMED limited their evaluation to these specific metals and took a recommends using the RMCs to determine the potential health hazards are present at a site and if action, comprehensive approach based on all the data available. Golder assembled all the laboratory data for by either resource management or remediation, should be considered. Furthermore, the BLM as well as total metals in Table 3 and included BLM RMCs and updated EPA soil screening levels (EPA 2012). other federal agencies often apply these RMC to determine if soil remediation should be conducted on Based on the data presented in Table 3, Golder confirms NMED’s estimate the potential lead risk with public lands that have been impacted by mining. Golder recognizes the BLM screening procedure was sample BHS008, but we’d qualify it as a low risk to human health based the BLM guidance. Additionally, not available at the time of the Boston Hill investigation by NMED. Golder estimates a low risk associated with arsenic in 2 samples based on current industrial worker exposure scenarios. Note that the EPA industrial guidance for arsenic is different relative to the BLM Human exposure scenarios were developed for individuals who use BLM lands for camping and all-terrain camper scenario, thus Golder believes the risk associated with arsenic is acceptable at Boston Hill. vehicle (ATV) driving. The camper scenario is a more restrictive scenario indicative of a chronic level of exposure assuming a 14-day exposure duration. Campers may be exposed to metals by inhalation of 5.0 GROUNDWATER dust; accidental ingestion of soil by hand-to-mouth activities (eating, drinking and smoking); and small Twelve geologic units are exposed at the site ranging in age from Upper Cambium to Quaternary with children may ingest larger amounts of soil than adults. The ATV driver scenario assesses acute Precambrian granite and metamorphosed rocks underneath. Entwistle (1944) indicates there is limited exposures for individuals who may stir up and inhale dust while riding on unimproved roads or trails. folding and numerous faults in the area. The predominate dip of the geologic units is 15 degree to the southeast (Cunningham 1974). Table 2. Recreational Risk Management Criteria for Human Exposure to Soils at Mining Sites Trauger (1972) reports that other than Quaternary alluvium in the southeast and southwest of the site, the Metal Camper ATV Driver mg/kg rock units are not water-bearing except for local areas in the immediate vicinity of fractures and faults. Antimony 50 750 Groundwater flow direction is to the southeast approximating the dip of rock units with a hydraulic Arsenic 20 300 Cadmium 70 950 gradient at nearly 0.02 according to a water-level contour map (Trauger, 1972). With the exception of the Copper 5000 7000 Silver Spot mine, no water was encountered in the underground mines at Boston Hill (Entwistle 1944). Lead 1000 1000 Manganese 19000 250000 Mercury 40 550 The Phase II ESA did not include discussion of published data (Trauger, 1972) on groundwater depth or Nickel 2700 38000 gradient direction of the area, or geometric relationship of groundwater sampling well locations relative to Selenium 700 9600 geologic units or mining areas (Cunningham, 1974). Based upon review of these resources, Golder Silver 700 9600 Zinc 40000 550000 concludes that the wells sampled by NMED (BHW-001 and BHW-002) penetrate different stratigraphic units that are separated by approximately 300 feet of intervening strata. According to the groundwater gradient projection (Trauger 1972, Figure 3), wells BHW-001 and BHW-002 are located upgradient or The concept behind the RMC is that people will not experience adverse health effects from metal sidegradient respectively of mining disturbances at Boston Hill. contamination in their lifetimes while exposure is limited to soil, sediments, and waters with concentrations at or below the RMC. Risk is evaluated for soil concentrations exceeding RMCs with concentrations below the RMC considered very low to no risk. Concentration between 1-10 times the
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50 51 Safeguarding Abandoned Mines on Boston Hill | Silver City, NM Safeguarding Abandoned Mines on Boston Hill | Silver City, NM 19 64 25 17 75 7.4 1.5 6.1 7.3 0.9 7.1 1.6 ND ND 440 160 7300 0.058
12000 Ken Romig March 15, 2013 Dekker/Perich/Sabatini 1 Project No. 123-80045 , 2013 80045 BHS035 Background worker
22 17 11 Groundwater samples were collected from two wells in the vicinity of Boston Hill on September 1999 4.3 3.4 2.9 7.3 3.4 ND ND ND 310 110 March 15 0.72 5000 5800 1000 0.062
30000 (Figure 2). NMED sampled groundwater at one well located within the Boston Hill site boundary (BHW- BHS029 001, Onsite well); the other was located approximately 900 feet northeast of the site boundary (BHW-002, Project No. 123 - 10 33 17 13 16 85 2.1 7.5 9.3 2.7 4.9 ND ND ND 160 Klaus well). Samples from these two wells were collected and analyzed for total metals using EPA 8600 2400 1400 25000
BHS014 protocols (SW846 2007). 3 87 68 20 5.8 0.1 4.1 3.8 2.1 ND ND ND ND 300
0.39 Documentation of the groundwater sampling methods employed during the limited Phase II investigation 1600 4100 1100 46000
BHS013 does not identify the water-bearing units penetrated by the wells and in the case of BHW-002 includes no
5 information on depth of completion or static water level. NMED reported that well BHW-0002 may have 18 76 5.4 1.5 3.8 1.4 7.7 1.3 ND ND ND 110 0.7 0.07 0.24 1300 2700 1100
15000 been inadequately purged such that turbidity may have been present in the sample. BHS012
64 50 23 11 Analytical results indicated that barium, cadmium, cobalt, copper, iron, manganese, thallium, and zinc 1.1 3.5 6.8 4.7 9.5 7.6 1.3 ND ND 390 120 0.69 7600 6700
44000 were detected in the water samples collected. Beryllium, iron, manganese and thallium were found in BHS011 concentrations exceeding NMWQCC or EPA standards in samples collected from one or both wells. 31 86 1.3 1.9 5.6 4.2 1.4 9.5 ND ND ND 170
0.85 Previous groundwater sampling of BHW-001 (SWAT Laboratory 1996) reported a total dissolved solids 1800 6500 3000 2800 4000 0.075
BHS008 concentration of 244 mg/L, indicating the water had a low level of salinity and was suitable for livestock consumption. No metals analyses were performed on the 1996 sample. The NMED reported that 10 19 1.9 2.6 2.7 4.4 4.8 6.1 3.1 ND ND 540 190 490 160 total (mg/kg) total 0.13 4100 1600
1 insufficient data was collected during the Phase II investigation to attribute the elevated metals in 36000 Boston Hill Soil Samples Soil Hill Boston BHS005 groundwater to the Boston Hill mining activities. 12 93 10 21 2.1 1.8 3.7 6.6 2.8 4.9 ND ND ND 210 820 190 3900
17000 25000 5.1 Interpretation of Groundwater Analyses BHS004 Analysis of water samples for total metals is a conservative method. The total metals approach was 0 14 12 23 1.9 3.5 7.2 3.1 6.7 ND ND ND 200 100 24 820 developed to account for potential erroneous low concentrations when trace metals form precipitates in 4500 0.052 18000 27000
BHS003 sample containers between the time of sample collection and the time of laboratory analysis. To 2 3 overcome this problem, acid is placed in the sample containers to maintain trace metals in solution until 14 11 33 64 13 23 2.2 2.1 7.2 ND ND 290 650 4200 0.093
20000 24000 the laboratory can perform the analysis. The total metals analytical approach is often deployed initially to BHS002 identify potential environmental problems associated with toxic metals 6 .5 36 62 11 16 8 8.3 1.7 2.9 ND ND ND 200 650 0.94 1200 2700 0.022 21000 Total metals analytical methods requires water samples to be digested in acid prior to analysis. Total BHS001 metals analyses are very sensitive, but yield erroneously high metals concentrations when turbid samples not detected are analyzed. Common earth metals such as iron and manganese, as well as other less common metals 50 20 40 70 NA NA NA NA NA NA NA NA 700 700 BLM 5000 1000 2700 RMC 19000 40000 are normally bound in mineral matrices and not mobile in groundwater in oxidizing shallow groundwater Camper Camper environments. When turbid water samples are acid-digested, immobile metals present in suspended solids are dissolved into the sample, which bias and yield analytical results with higher metal 00 43 1.6 NA 410 300 8 EPA EPA 800 3 5100 5100 5200 2000 41000 23000 47000 990000 180000 720000 310000 190000 Worker concentrations. Where rigorous well purging to obtain turbidity-free water samples is not feasible, field not available; ND – Industrial Industrial filtered samples may be collected to remove turbidity prior to acidifying the samples. V Al Ni Cr As Fe Th Zn Sb Ba Be Pb Se Ag Cd Co Cu Hg Mn Analyte and BLM based risk criteria for campers Ken RomigKen for levels industrial to screening samples compared soil EPA soil background Bostonand for Hill Table concentrations 3 : Total metal Note: NA – 2 031513.docx phase hill boston of review tm Dekker/Perich/Sabatini
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Ken Romig March 15, 2013 Ken Romig March 15, 2013 Dekker/Perich/Sabatini 2 Project No. 123-80045 Dekker/Perich/Sabatini 3 Project No. 123-80045
We conclude that limited Phase 2 groundwater data indicates that barium, cadmium, cobalt, copper, iron Duke Engineering & Services, January 2000, Phase I and Limited Phase II Environmental Site Assessment for the Boston Hill Site, Silver City, New Mexico. manganese, thallium, and zinc may potentially be present in groundwater in the vicinity of Boston Hill; however due to lack of information on sampling methods and sample turbidity, detections of these metals Entwistle, L.W. 1944. Manganiferous iron-ore deposits near Silver City, New Mexico. New Mexico Bureau of Mines and Minerals Resources, Bulletin No. 19. is unconfirmed. Additionally, based upon available regional groundwater gradient projection, wells BHW- 001 and BHW-002 do not appear to be located in areas that are downgradient of mining disturbances at EPA. 1999. EPA Region 6 Human Health Medium-Specific Screening Levels. Dallas, TX. June 1999. Boston Hill. EPA SOP. 1995, “Spectrace 9000 Field Portable X-Ray Fluorescence Operating Procedures”, USEPA SOP# 1713, Rev. 0.0, January, 26, 1995. 6.0 GENERAL CONLUSIONS EPA. 2007. Method 6200, “Field Portable X-Ray Fluorescence Spectrometry For The Determination of Our general impression of the Phase II ESA is that the investigation was performed in accordance with Element Concentrations in /Soil and Sediment”, Rev. 0, SW-846 Test Methods for Evaluating Solid standard protocols for a screening level assessment and the NMED used prescribed EPA methodology Waste, February, 2007. for laboratory work. However, Golder believes the XRF data are generally unreliable given the poor EPA. 2013. Regional Screening Levels (http://www.epa.gov/region6/6pd/rcra_c/pd-n/screen.htm) correlation with laboratory data due to issues related to instrument calibration, overlapping spectral Accessed February 15, 2013. responses, and sample heterogeneity. Thus, Golder would not make any definitive conclusions about EPA 2013. Risk Assessment (http://www.epa.gov/risk_assessment/basicinformation.htm). Accessed metal contamination on the site base on XRF responses and would rely on confirmational sample data to March 14, 2013 assess any potential exposure risks. New Mexico Environmental Department (NMED). 1999. “Limited Phase II Sampling Report, Boston Hill Mining District, Silver City, NM.” Groundwater Quality Bureau Based on laboratory data, one sample of the 24 taken at Boston Hill appears to present an acceptable SW-846. 2007. Method 6010C, “Inductively Coupled Plasma-Atomic Emission Spectrometry”, Revision 3, human health risk for lead for a recreational camper exposure scenario. Golder believes the camper SW-846 Test Methods for Evaluating Solid Waste, February, 2007. exposure scenario is conservative given the more casual recreational day uses at Boston Hill. Though Golder used a different exposure model, our assessment of human health risks with the metals is similar Trauger, F.D. 1972. Water Resources and General Geology of Grant County, New Mexico. New Mexico Bureau of Mines and Minerals Resources, Hydrologic rReport 2. to NMED’s.
Golder is unable to make definitive conclusions about groundwater impacts with the limited data provided in the Phase II report. Groundwater impacts remain unknown given the samples were collected improperly and taken from wells not downgradient from the site. However, Golder suspects the elevated metals found in the water samples are most likely associated with the suspended sediment rather than mine-related impacts because the majority of mine working did not intersect groundwater. This remains unconfirmed.
Finally, Golder concurs with NMED Phase II report that Boston Hill presents low risks to expose recreational users to metals associated with the mine wastes.
7.0 REFERENCES American Society of Testing and Materials (ASTM). 1997. E1903-11 Standard Practice for Environmental Site Assessments: Phase II Environmental Site Assessment Process. Reissued 2002.
Cunningham, J.E. 1974. Geologic map and sections of the Silver City quadrangle, New Mexico. New Mexico Bureau of Mines and Minerals Resources, Geologic Map 30
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Appendix F: Draft Report On The Evaluation of the Boston Hill Project
Feature: 4 To: Abandoned Mine Lands Bureau Environmental Coordinator Observations: This is a 6’ x 8’ by 20’ blind open stope. There was no sign of bat use and From: Dr. J. Scott Altenbach low potential for bat use. A barn owl was nesting with a small clutch of eggs in a stoped Department of Biology portion in one of the ribs. University of New Mexico Recommendation: This feature should be protected with a closure which allows access Albuquerque, NM 87131 for barn owls. Closure construction should be from the beginning of August through the end of April to minimize impact on barn owl nesting behavior. Subject: Draft Report on Evaluation of the Boston Hill Project
Date of Evaluation: April 23, 2013 Feature: 5
Observations: This is a 5’ x 7’ x 10’ blind adit with no bat sign or owl sign and very low Feature dimensions are given as linear distances across the opening (adit portal, or bat use potential. shaft/open stope collar) and the depth of the feature. Recommendation: Safeguard by any means at any time.
Features: NW shaft, S shaft/stope, S shaft, shaft 01, shaft 13, shaft 08 Feature: 6
Observations: These are all prospects less than 8’ deep, have no sign of wildlife use and Observations: This 8’ x 10’ x 10’ blind shaft with no sign of bat or owl use and very low have no bat use potential. use potential. Recommendation: Safeguard by any means at any time. Recommendation: Safeguard by any means at any time.
Feature: 2 Feature: 7
Observations: This is a 10’ x 20’ by 25’ blind open stope. There is some potential for bat Observations: This is a 6’ x 8’ x 25’ shaft which has been stoped in the ribs along the night roosting activity but there was no sign of bat use. Barn owl whitewash of the rib strike of the ore body being prospected. No sign of bat use was observed but there was a indicated periodic use. barn owl present and considerable whitewash on the ribs. The feature presents minimal Recommendation: If this feature is protected it should be protected with a closure which bat habitat. allows access for barn owls. Closure construction should be from the beginning of Recommendation: If this feature is protected it should be protected with a closure which August through the end of April to minimize impact on barn owl nesting behavior. allows access for barn owls. Closure construction should be from the beginning of August through the end of April to minimize impact on barn owl nesting behavior. Feature: 3
Observations: This is a 12’ deep blind shaft with no sign of bat or owl use and very low use potential. Recommendation: Safeguard by any means at any time.
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Feature: 14 Feature: 9 Observations: This is a cut with a 10’ highwall. There is no potential for wildlife use. Observations: There are two separate features here. The first (A) is a large open stope Recommendation: No recommendation. with a stoped out rib on the north making an undercut. There is a 20’ drop from the collar above this undercut to the sill below. A person can easily walk in and out of this stope. The undercut portion of the stope has the potential for bat night roost activity although no Feature: Tunnel A bat sign was observed. Neotoma sign and a large midden were observed in the stope. Observations: This is a 30’ x 20’ x 20’ open stope with a 30’ x 10’ undercut stoped area The second (B) is an adit/open stope with a 2’ x 5’ portal and an oval underground stoped on the north side. There was guano from Corynorhinus townsendii and at least one area roughly 15’ x 20’ and about 7’ high. No bat sign was observed but there is both species of Myotis in this stoped portion. There is obviously night roosting activity here night roosting potential and hibernation potential. and the potential for maternity activity. Recommendation: The first feature (A) can be safeguarded by any means at any time. Recommendation: The stope collar should be closed with cable netting fitted with 6” x The second feature (B) could be closed by any means at any time with visual inspection 12” angle iron windows for bat entry. Construction should avoid the warm season. immediately before to be sure no unexpected occupants are present Construction should be from the beginning of October through the end of April.
Feature: Legal Tender Mine and associated shafts/open stopes in three fenced areas Feature: 10 The underground mine is large, with multiple openings, and has highly significant Observations: This 6’ x 7’ x 15’ blind shaft with no sign of bat or owl use and very low bat use. Of great concern to me is the extreme danger the site presents. The underground use potential. portion of the mine is dangerous with large slabs on the back that are cracked nearly Recommendation: Safeguard by any means at any time. around. There is evidence of extensive visitation. There are numerous campfire sites, large amounts of trash including alcoholic beverage containers, exploded fireworks and clothing scattered in many areas of the underground. This appears to be a well used party site. Building fires underground, even in a mine with multiple openings and generally good ventilation, is extremely dangerous because of the possibility of carbon dioxide accumulation in low lying areas. Many deaths have occurred in abandoned mines because Feature: 11 of this. Of greater concern to me is the extreme danger the surface openings in the fenced areas present as fall hazards even to the wary. The sides of some of the shaft/open stope Observations: This 6’ x 7’ x 20’ blind shaft with no sign of bat or owl use and very low entries have loose rock on a solid rock surface making slipping and falling highly likely. I use potential. have spent much of my life working in and around abandoned mines and have evaluated Recommendation: Safeguard by any means at any time. many thousands of abandoned mines in 12 states. The likelihood of falling into these openings makes this among the most dangerous sites I have seen. It is absolutely astonishing to me that falls and death or injuries have not occurred here. The Feature: 12 responsible parties should consider the safeguarding of these features a critical priority. Observations: This is a 3’ x 7’ shaft/open stope likely not more that 15’ deep. However Of importance from a wildlife management perspective is the tremendous it is filled with barbed wire and other trash which prevents entry and evaluation. Bat entry negative impact to bat use presented by the magnitude of the human visitation to the is possible. underground parts of this mine. There is maternity activity and hibernation by Recommendation: The feature should be evaluated after removal of the wire and trash. Corynorhinus townsendii and use by several other bat species as well. Both of these If it is to be closed destructively, closure should be done in the warm season, from the activities are highly vulnerable to disturbance. Under the best of circumstances, beginning of May through the end of September, with heavy smoke bombing at night disturbance of bats during maternity activity will result in the death of the bat pups. followed by exclusion with 1 inch mesh or poultry netting for 48 hours before closure. Repeated disturbance during hibernation will likely result in the death of the bats. I suspect that the negative impact to bats in this area has been significant. Summary of Recommendations:
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Safeguard by any means at any time, or no recommendation Appendix G: Town Of Silver City Ampitheater Study NW shaft, S shaft/adit, S shaft, shaft 01, shaft 13, shaft 08, 3, 5, 6, 9A, 10, 11, 14 Project Overview Protect with a closure which allows access for barn owls. Closure construction should be from the beginning of August through the end of April to minimize Part of the Town's Trails and Open Spaces initiative, the Boston Hill, San Vicente impact on barn owl nesting behavior. Creek and other trail areas keep important parts of Silver City's natural environment and 2, 4 historic areas available to citizens and visitors.
In an effort provide an enhanced visitors experience as well as a Town Asset, this presentation
King Bolt proposes developing an outdoor concert & entertainment space that takes advantage of the Evaluate after removal of the wire and trash. If it is to be closed destructively, Pit natural features of the Boston Hill Open Space and its proximity to downtown Silver City. closure should be done in the warm season, from the beginning of May through the We have identified an appropriate site based on a number of metrics, from existing infrastructure, end of September, with heavy smoke bombing at night followed by exclusion with 1 North Pit accessibility, traffic, natural siting opportunites, and minimizing impact to surrounding residential La Capilla inch mesh or poultry netting for 48 hours before closure. neighborhoods. 12 The Adonis Pits are a short 0.75 mile walk, drive, or bike from the downtown Silver City Core.
The stope collar should be closed with cable netting fitted with 6” x 12” angle iron The Amphitheatre is currently designed to hold 1000-1200 people in the site proper.
windows for bat entry. Construction should avoid the warm season. Construction Adonis Pitss This presentation reflects a schematic level of design only and is intedended to illustrate just one should be from the beginning of October through the end of April. possible solution for the project. Tunnel A
14,015 Ft. Overall view
East|West Site Profile
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Boston Hill Amphitheatre Primary Site Materials & Methods This Adonis Pits, located just off Cooper Street is the suggested Primary Site:
The site should be: Proposed materials for the strucuture are intentionally simple and meant to be exposed • Accessible to visitors with disabilities to the elements. • Provisions for parking is a Town Zoning requirement • Utilities should be located nearby • Steel was chosen for ease of construction, durability and it’s ability • The siting of the stage should take advantage of views, sunpath and to be easily disassembled and repurposed or recycled. the natural terracing if possible. • The storage wings are concrete block and stucco. Cooper Street Initial code analysis requires spaces for 400 cars, this number can be reduced, through variances • The proposed roofing material is fabric sunshade. and other parking reduction measures, but from a strategic planning view, this is the number one space issue limiting the location possibilities. The La Capilla “bowl” could possibly be developed • The stage is metal frame with metal decking and concrete topping. for off-street parking or an additional or alternative site. This too can be disassembled and repurposed should the need arise. A modular frame also allows for understage access. The Chihuahua Hill neighborhood borders the site to the North and we believe the proposed site is located a sufficient distance to provide a buffer to those residents. Noise analysis will have to be • The seating should take advantage of the natural bowl shape at the conducted prior to any proposed development. Primary site. Earthwork will have to be performed to ensure safety and views. View looking West The site is also directly North of the La Capilla Cemetary and we propose extending the natural • The terraced steps have concrete retaining block for schematic purposes, berm as a buffer between the cemetary and the stage. this can be refined and alternate materials can be suggested.
The Senior Center across Cooper Street has a nature walk developed that could be extended and • The sharp rocky features of Boston Hilll do not lend themselves well for linked to the outdoor venue, creating an added benefit for our Seniors. seating. The terraces created will need something more forgiving than the existing site soils. The proximity to downtown Silver City should prove to be a benefit to the annual Blues Festival, The ultimate goal is enhance the site potentials of Boston Hill to create a venue that Pickemania, and other outdoor music events where staging can occur and Gough Park and at provides an intimate outdoor concert and entertainment space. Boston Hill simultaneously.
View looking North
View looking East
Proposed View from Amphitheatre
Site Panorama
Architecture|Workshop www.architectureworkshop.com
62 63 Safeguarding Abandoned Mines on Boston Hill | Silver City, NM Safeguarding Abandoned Mines on Boston Hill | Silver City, NM
Appendix H: Town Of Silver City Demographics Subject Percent Subject Percent VETERANS HOUSEHOLDS BY TYPE Civilian population 18 years and over 8,368 Total households 4,473 Civilian veterans 11.7% Family households 56.0% with own children under age of 18 19.8% U.S. CITIZENSHIP STATUS Married-couple family 33.0% Foreign-born population 779 with own children under age of 18 8.0% Naturalized U.S. citizen 51.9% Male householder, no wife present, family 4.4% Not a U.S. citizen 48.1% with own children under 18 years 2.4% Female householder, no husband present, family 18.6% LANGUAGE SPOKEN AT HOME with own children under 18 years 9.4% Population 5 years and over 9,727 Nonfamily households 44.0% English only 65.1% Householder living alone 40.2% Language other than English 34.9% 65 years and over 12.8% Spanish 31.8% Households with one or more people under 18 years 24.0% Households with one or more people 65 years and over 33.8% Subject Percent Subject Percent EMPLOYMENT STATUS SCHOOL ENROLLMENT Population 16 years and over 8,649 Population 3 years and over enrolled in school 2,883 In labor force 54.8% Civilian labor force 54.8% Nursery school, preschool 4.5% Employed 50.0% Kindergarten 2.5% Unemployed 4.8% Elementary school (grades1-8) 27.9% Armed forces 0.0% High school (grades 9-12) 19.1% Not in labor force 45.2% College or graduate school 46.0% Civilian labor force 4,742 SCHOOL ENROLLMENT Percent unemployed 8.8% Population 25 years and over enrolled in school 7,049 Less than 9th grade 6.9% Females 16 years and over 4,562 9th to 12th grade,no diploma 10.2% In labor force 54.4% High school graduate (include equivalency) 24.0% Civilian labor force 54.4% Employed 50.4% Some college, no degree 26.3% Associates degree 7.5% Own children under 6 years 680 Bachelors degree 12.8% All parents in family in labor force 66.8% Graduate or professional degree 12.4% Own children 6 to 17 years 1,127 Percent high school graduate or higher 82.9% All parents in family in labor force 71.3% Percent of bachelor degree or higher 25.2%
64 65 Safeguarding Abandoned Mines on Boston Hill | Silver City, NM Safeguarding Abandoned Mines on Boston Hill | Silver City, NM
COMMUTING TO WORK Subject Percent Workers 16 years and over 4,115 CLASS OF WORKER Car, truck, or van- drove alone 68.2% Civilian employed population 16 years and over 4,325 Car, truck, or van-carpooled 12.7% Private wage and salary workers 67.8% Public transportation 0.0% Government workers 26.8% Walked 8.7% Self-employed in own not incorporated business workers 4.8% Other means 3.0% Unpaid family workers 0.6% Worked at home 7.4%
INCOME AND BENEFITS (IN 2011 INFLAMATION ADJUSTMENT DOLLARS Total households 4,473 Subject Percent Less than $10,000 9.5% OCCUPATION $10,000 to $14,999 11.0% Civilian employed population 16 years and over 4,325 $15,000 to $24,999 22.3% Management, business, science, and arts occupations 40.6% $25,000 to $34,999 11.4% Service occupations 21.5% $35,000 to $49,999 15.6% Sales and office occupations 19.1% $50,000 to $74,999 13.0% Natural resources, construction, and maintenance occupations 10.8% $75,000 to $99,999 11.1% Production, transportation, and material, moving occupations 8.2% $100,000 to $149,999 4.3% $150,000 to $199,999 0.6% INDUSTRY $200,000 or more 1.1% Civilian employed population 16 years and over 4,325 Agriculture, forestry, fishing, and hunting, and mining 9.8% Subject Percent PERCENTAGE OF FAMILIES AND PEOPLE WHOSE Construction 5.8% INOME IN THE PAST 12 MONTHS IS BELOW THE Manufacturing 1.2% POVERTY LEVEL Wholesale trade 1.4% All families 18.3% Retail trade 8.4% Transportation and warehousing, and utilities 1.7% All people 20.6% Information 2.6% Under 18 years 34.0% Finance and insurance, and real estate and rental and leasing 3.8% Related children under 18 years 34.0% Professional, scientific, and management, and administrative 7.8% Related children under 5 years 41.7% and waste management services Related children 5 to 17 years 30.4% Educational services, and health care and social assistance 36.8% 18 years and over 17.4% Arts, entertainment, and recreation, and accommodation and 12.7% 18 to 64 years 22.1% food services 65 years and over 4.0% Other services, except public administration 4.0% People in families 20.2% Public administration 4.0% Unrelated individuals 15 years and over 22.1%
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table of contents
Subject Percent SEX AND AGE Phase II Total population 10,337 appendix a: public meeting...... II Male 47.5% Public Meeting notices were posted at the entries of all Boston Hill trailheads and at the Silco Theatre. Female 52.5% Notices were sent via email to stakeholder lists and the meeting was held the eveingin of April 3, 2013 at the Silco Theatre. The material in Appendix A represent the advertisements, the presentation materials and Under 5 years 5.9% the meeting notes from that meeting. 5 to 9 years 3.7% appendix b: kleinfelder phase II site...... III 10 to 14 years 6.0% Appendix B is for information only and represents a separate contracted study of Legal Tender Mine 15 to 19 years 7.4% Complex commissioned by the AML program. The study is integral to our understanding of the conditions 20 to 24 years 8.9% of the abandoned Legal Tender Mine Complex . 25 to 34 years 9.4% appendix c: field design meeting #1...... IXI 35 to 44 years 10.8% Held at the Silco Theatre field design meeting #1 was held from Aug 8-10, 2013. This appendix contains flyers, 45 to 54 years 12.2% orientation materials, meeting notes and attendance lists. 55 to 59 years 8.2% appendix d: field design meeting #2...... IXII 60 to 64 years 7.0% Held at the Silco Theatre field design meeting #1 was held from October 5-8, 2013. This appendix contains 65 to 74 years 9.9% flyers, orientation materials, meeting notes, attendance lists and before and after graphics. 75 to 84 years 7.2% appendix E: xxx 85 years and over 3.6% xxx
Subject Percent RACE Total population 10,337 Caucasian 75.5% African American .6% Native American 4.3% Asian 1% Some other race 15.9%
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Appendix A: Public Meeting . . Y Y T O T O I I C C C
C
T MARKET STREET T N N E R TRAILHEAD E R TRAILHEAD A A V V SPRIING STREET R L R L G G TRAILHEAD
S I TRAILHEAD S I
CHEYENNE STREET TRAIILHEAD LEGAL TENDER // GLOBE MIINE
NORTH PIIT KIING BOLT PIIT
RAVEN PIIT ADONIIS PIITS COOPER STREET COMMANCHE TRAIILHEAD PIIT LUCK MIILL . . Y Y T O T O I I C C C
C
T T N N E R E R A A V V R L R L G G S I S I
0 300 600 900 1,200 Feet SCALE: 1" = 300' ´ LEGEND
STUDY AREA BOUNDARY
SURFACE DEPRESSION AREAS
EXISTING BOSTON HILL TRAILS
POST-1977 MINING AREA
BOSTON HILL OPEN SPACE BOUNDARY
BLM LAND
EXISTING PRIVATE LAND
W. NEW MEXICO UNIVERSITY LAND
GRANT COUNTY LAND
EXISTING TRAILHEAD ACCESS
GRANT CO. / SILVER CITY BOUNDARY SAFEGUARDING ABANDONED MINES Open House Community Meeting, Silver City, New Mexico March 21, 2013
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NATIVE PLANTS
MARKET STREET TRAIILHEAD SPRIING STREET TRAIILHEAD Shaft 14 Grama Grass Catsclaw Acacia Cane Cholla Desert Broom Globemallow Brownfoot Chocolate Flower )" CHEYENNE STREET )" )" TRAIILHEAD Shaft 13 LEGAL TENDER // )" Shaft 05 GLOBE MIINE Shaft 15)" Potential Bat Habitat NORTH PIIT )"Shaft 12 KING KING Desert Willow Sacred Datura Bird of Paradise Mountain Mahogany Turpentine Bush Bannana Yucca Blanket Flower BOLT PIIT )" Tunnel A )" Potential Bat Habitat
Shaft 08)" )" Shaft 10 Shaft 11 )" NW Shaft RAVEN )")" PIIT )"Shaft 09 ADONIIS Fendler’s Penstemon Buffalo Gourd Alligator Juniper Sunflower Indian Paintbrush Javalina Bush Verbana PIITS COOPER STREET COMMANCHE TRAIILHEAD PIIT LUCK MIILL
Beargrass Wheeler’s Sotol Blackfoot Daisy Pin Cushion Cactus Scarlet Penstemon Pinon Pine Prickly Poppy Shaft 07 )" Shaft 06 )" )"Shaft 04 )" Shaft 03 Potential )" Shaft 02 Potential Barn Own Habitat )")")")" Ban Own Habitat )" South Shafts South Shaft 01 - Adit Shafts
Prickly Pear Squawbush Snakeweed Hedgehog Cactus Apache Plume Soapweed Yucca Sideoats Grama INTRODUCED PLANTS
Russian Olive Tree of Heaven Common Mullein White Horehound Thistle Tamarisk Goathead
Copyright:© 2013 Esri, DeLorme, NAVTEQ, TomTom, Source: Esri, DigitalGlobe, GeoEye, i-cubed, USDA, USGS, AEX, Getmapping, Aerogrid, IGN, IGP, and the GIS User Community ANIMALS 0 300 600 900 1,200 LEGEND Feet SCALE: 1" = 300' Shafts_GAIFieldData STUDY AREA BOUNDARY Shafts_GAIFieldData ´ STEEP AREA SHAFTS BY FALL HAZARD AND EGRESS SURFACE DEPRESSION AREAS )" NO FALL HAZARD EXISTING BOSTON HILL TRAILS )" FALL HAZARD, EASY EGRESS POST-1977 MINING AREA )" FALL HAZARD, DIFFICULT EGRESS BOSTON HILL OPEN SPACE BOUNDARY Small Eared Bats Coyote Javalina Mule Deer Fox Porcupine Rattle Snake )" FALL HAZARD, NO EGRESS EXISTING TRAILHEAD ACCESS BLM LAND
EXISTING PRIVATE LAND
W. NEW MEXICO UNIVERSITY LAND
GRANT COUNTY LAND Hazards Associated with Boston Hill Mines American Dipper Mexican Spotted Owl Dusky Grouse Wild Turkey Gambels Quail Black Hawk Goshawk Open House Community Meeting, Silver City, New Mexico March 21, 2013 Open House Community Meeting, Silver City, New Mexico March 21, 2013
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BOSTON HILL SAFEGUARDING SOLUTIONS
Airflow Closure Lake Valley AML Bat Cupola in Orogrande Bat Gate Harding Pegmatite Mine
Bats in Bat Cupola Oritz Mine Bat Gate Harding Pegmanite Mine Bat Cupola Lake Valley BLM March 201321,
Mesh and Bridge over Shaft Cerrillos Hills State Park Viewing Platform with Mesh at Cerrillos Hills State Park
Bat Cupola Lake Valley BLM AML Bat Cupola Lake Valley BLM Mesh Cover in Orogrande
Open House Community Meeting, Silver City, New Mexico March 21, 2013 OpenHouse Community New MexicoMeeting, Silver City, CULTURAL RESOURCES
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BOSTON HILL SAFEGUARDING SOLUTIONS
MULTIPLY “The garden place is a possibility of immersing oneself in nature and penetrating UNDER & ABOVE it. This one spot on the earth becomes a door, a gate, a crack, a grotto, a cave, a corridor leading inwards.”
DIVISION “Every stone setting is reminiscent of ancient SUBTRACTION times, of the Stone Age, of Stonehenge and cave-dwellers. Stone landscapes are serious & ADDITION and dignified. A breath of a cemetery wafts around them.” IMAGINE ENTRANCES EDGES
EXPERIENCE REIMAGININGREIMAAGINING THE LANDSCAPE
BRIDGES STRATEGIES
ENCLOSURE “This way leads into the interior of the earth, into its bowels, into the subconscious of the earth.” SEPARATE
PATHS EVENING FLIGHT VOID “The place as a separate zone. Hearing the grass grow all around.”
KNIT
ENTRY
REMOVE EXISTING CONDITIONS
CONCEPTS *Derived from: “Landscape as Inspiration” by Hans Dieter Schaal Open House Community Meeting, Silver City, New Mexico March 21, 2013 Open House Community Meeting, Silver City, New Mexico March 21, 2013
76 77 Safeguarding Abandoned Mines on Boston Hill | Silver City, NM Safeguarding Abandoned Mines on Boston Hill | Silver City, NM
Meeting Minutes • Transition the apparent risk into the “experience of risk” without sacrificing the feeling of exploring the mines Project No.: 12-0089.001 • The mine hazards equal an experience that is unique Project: Plan and Design for Safeguarding Abandoned Mines on Boston • Awareness… what protocols for safety, maintenance, etc, to follow? Hill • Visitors use common sense – there are hidden features/dangers present (like the Grand Canyon) Date/Time: 03/21/2013, 5:30-8:00pm • Safety and curiosity need balance • Do not change what doesn’t need it Place: Silco Theatre, Silver City • Preserve the natural beauty of the site • Construction, need to know what they are doing (be familiar) Attending: Ken Romig, Noah Shumate, DPS; Tim Karpoff, Karpoff and • ADA considerations, not too accessible – don’t want to lose the natural beauty/setting of the site Associates; Doug Romig, Jen Pepe, Golder Associates; Joseph • City needs awareness of on-going responsibilities Gendron, PE; Meaghan Vallero, Marc Concilovich, Kleinfelder; • Don’t want to miss out on this opportunity John Kretzmann, AML Program Director. • Concern for obliterating natural beauty to maintain safeguarding measures By: Noah Shumate, Lana Idriss • Town needs to take interest and maintain the site also • Area is not static – it will change over time (consider this in design and visioning) Copies To: Parties Present • Do not destroy, rehabilitate Issue Date: 04/09/2013 • Let some area go back to natural Discussion Items: • Preserve floras/fauna (controlling humans, not just controlling mines)
The Open House / Public Meeting schedule was as follows: Opportunities- What Can We Do?
Open House 5:30 to 6:30 PM • Signage of potential hazards Presentation 6:30 to 7:00 PM • History and safety exhibit on trailheads Discussion 7:00 to 8:00 PM • Danger to pets- need leash laws • Preserve it, have tours For the Open House portion, guests were encouraged to view the large format poster boards which presented four topics (at • Tours = Group maintenance four “stations”) relative to mine safeguarding at Boston Hill: • Rock work, natural native stone • Stabilizing the Legal Tender mine? Maintain natural look • Existing conditions of the mining areas and their Geology (Doug Romig and Jen Pepe, Golder Associates) • Qualities of construction, keep natural and rough • Existing hazards and current safeguarding measures (Meaghan Vallero and Marc Concilovich, Kleinfelder) • Fence private land vs. appropriate safeguarding • Cultural/historical and biological aspects (Joseph Gendron) • Could the Town acquire private land within Boston Hill • Opportunities for uses and mitigation strategies/potentials (Ken Romig, D/P/S) • Legal tender safeguard = Town acquisition • Design for an experience with less risk. Attendees throughout the evening were mostly local, concerned citizens of Silver City. Also in attendance were • Design for low maintenance representatives of the local Youth Conservation Corps (YCC) who showed much enthusiasm for the project, especially with • Plan should include maintenance plan schedule regard to how they often work on fence and trail projects in the region and that their organization could become an asset in • Site visit @ next public gatherings the long term maintenance of Boston Hill. • Plan to involve community to maintain • These are man-made- naturally eroding The formal presentation portion of the meeting was in PowerPoint format and generally followed the flow of the four topics • Not engineered features mentioned above. Tim Karpoff opened the presentation by thanking everyone for attending. Each of the team members then • introduced themselves. Need a clear criteria for work • Zoning – could help protect habitat and the site John Kretzmann began with an overall presentation of the AML program. Doug Romig presented on the overall site location and its attributes, followed by Marc Concilovich who discussed the hazards associated with Boston Hill and mine safeguarding in general. Next, Joseph Gendron discussed the various cultural, historical, and biological features of the site; and lastly, Ken Romig spoke to some of the potentials and opportunities for creating safeguards on Boston Hill that seek to This report is assumed to be a true and accurate account of this communication unless notice to the contrary is mitigate hazards on-site while also respecting the biology and aesthetics of the natural surroundings. received within 10 calendar days of issue.
Once the presentation was complete, Tim Karpoff then led an open discussion to gather comment on what the public feels are End of Minutes values and/or opportunities for the Boston Hill site in light of the presentation noted above. Those results – noted on large- format sketch boards during the meeting – are listed below.
Values- What to Keep in Mind
• Existing dangers at the mines… are they really dangerous, and how do we know? • Man made in natural areas – this is not a “natural” landscape • Preserve history of natural landscape surrounding the mines
\\enterprise\landscape\12-0089.001 Boston Hill\General\Meeting Minutes\MM-2012-03-21.doc \\enterprise\landscape\12-0089.001 Boston Hill\General\Meeting Minutes\MM-2012-03-21.doc
78 79 Safeguarding Abandoned Mines on Boston Hill | Silver City, NM Safeguarding Abandoned Mines on Boston Hill | Silver City, NM 3/28/2013 10:39 AM 10:39 3/28/2013 AM 10:39 3/28/2013 E-mail E-mail [email protected] [email protected] [email protected] [email protected] [email protected] [email protected] [email protected] [email protected] [email protected] [email protected] [email protected] [email protected] [email protected] [email protected] [email protected] [email protected] [email protected] [email protected] [email protected] [email protected] [email protected] [email protected]
Fax Fax
21-Mar-13
TWC 956-7138 534-0665 519-8974 654-2387 388-0243 536-9934 534-9040 534-9355 388-9069 538-5290 388-4367 534-0298 388-1417 538-9723 388-1417 Telephone Telephone (706) 369-6129 (706) 654-8185 (575) (248) 240-5029 (248) (520) 401-3096 (520) (505) 538-9080 (505) 538-8573 (121) 538-8573 (505) 280-4797 (505) (575) 534-0298 (575) (575) 538-8078 (575) (575) 654-0091 (575)
1 2
Self Self Self Self Self Self Self Self Gria Bayou Seco Bayou Bayou Seco Bayou Boston HRC Representing Representing Self / CaspersonSelf 1404 Su(illegible) The Coalition Wellness The Coalition Wellness The Coalition Wellness The Coalition Wellness The Coalition Wellness The Coalition Wellness The Coalition Wellness The Coalition Wellness NMOOH/GC Trails Group 12-0089 Safeguarding Boston Hill
Name Name Pat Dunn Susan HillSusan Nick Seibel Nick Sam Austin Sam Nancy Griff Joe Bemben Christopher John Rivera Sue Bemben Sue Henry Facio Gary Stailey Tim Karpoff Tim Jeff Romano Gail StanfordGail Ken Keppeler Cindy Gagnon Michele Griese Sandra Jeffries Carolyn Moore S. Lewis Hiram Jeanie McLerie Mary Ann Finn Jamie Thomson Jamie Stacy D-Mrazik CNF (? Illegible) Andrew Lindloff Marilyn Gendron Trevor DesRosiers Mandy Whitenburg Meeting Attendance Record 3-21 Record Attendance Meeting 3-21 Record Attendance Meeting Attendance Record Attendance Project No.: Project: Owner: Meeting Purpose: Meeting Date and Time:
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-
anager M
, AML Project Manager Project , AML March 21, 2013 21, March
- STAFF
Moiola AML Lloyd Lloyd John Kretzmann, PE, AML Program Program AML John Kretzmann, PE, Open House Open TOWN OF SILVER TOWN SILVER OF CITY PRESENTATION Abandoned of the and Safeguarding for Plan Design Mines on Boston Hill in Silver City, New Mexico NM ABANDONED ABANDONED PROGRAM LAND MINE NM Land (AML) Program
Mine
Who is AML? funded funded program, formed state through passage the of Surface the Mining Control - Act (SMCRA).
is a federally AML and Reclamation and Reclamation rock mines (i.e. Boston Hill) when obvious hazards are apparent. AML has worked on Boston Hill in Boston Hill on worked AML has apparent. are obvious hazards when Boston Hill) (i.e. mines rock past. the AML program funding sunsets in 2021. AML is funded through existing on tax a coal within mined AML abandoned state. on a works hard The New Mexico AML Program, part of the New Mexico Energy, Minerals, and Natural Natural and Minerals, Energy, of part Mexico New the Program, AML The Mexico New Resources Department, addresses the reclamation of abandoned mines throughoutproperty. the and private public both on state o o o The The New Abandoned Mexico
82 83 Safeguarding Abandoned Mines on Boston Hill | Silver City, NM Safeguarding Abandoned Mines on Boston Hill | Silver City, NM
practices.
historic mininghistoric
facilitate the higher higher the facilitate priority reclamation.
health, safety and property from from property and safety health,
public from hazards that do not constitute constitute not do that hazards from public
resulting from from resulting
lands and water degraded by historic mininghistoric by degraded water and lands
hazards. Restoration must must Restoration AML Priorities AML ature of Boston Hill : Protect : Protect the rock mining rock 2 AML AML and Boston Hill N - Wildlife habitat Proximity to Silver City Hard landowners Multiple Diverse Diverse stakeholder interests practices. Priority 1: Protect public Priority immediate hazards hazards immediate immediate Priority 3: Restore o o o o o for for constructed facilities Boston Hill Land Hill Land Ownership Boston Limitations Funding Limited Program Operations and Maintenance and Maintenance Operations Program Limited Characteristics of Boston Hill The AML program funding priorities: funding program AML The • •
• The Unique Unique The • capacity and organizational funding unique AML’s • • •
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Current Phase
-
Scope of Work
Design Construction Assistance Plan Assessment
- - - - AML AML Approach Safeguarding 3 Phase Phase I Phase 2 Phase 4 Phase Recognizes diverse landownership Respect the legacy of mining Integrate local knowledge and expertise into design No action option o o o o o o o o
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Hazards
- ongoing ongoing
- -
ongoing
-
ongoing – ongoing
-
profit groups profit -
Ongoing Silver City City Residents Silver Non Regulatory framework Regulatory integration data GIS History Biological GIS assistance from the City County City and from the assistance GIS City Manager of the Town Manager Silver City of theCityTown of Landowners Landowners
and Opportunities Possibilities Biological Biological and Cultural Resources Boston Hill Geologic Hazard Analysis Hazard Geologic Hill Boston Legal ComplexTender Geo Public Meeting Interviews Site Reconnaissance Research Mapping Current Project Status
• • • • • Station #3 Station #1 Station #2 Station #4 Presentation Organization
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Hazard Mapping Hazard
1H:1V steeper or 1H:1V > 10 feet 10 feet > Geologic Hazard Analysis Hazard Geologic - Land Ownership Map
• • Field Field Survey to potential characterized hazards physical highwalls Identify fall hazards with associated • Mine openings Mine Topographical analysis analysis Topographical • Station #1Station
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Fall Hazard, Hazard, Fall Egress Easy walk (Easy out) Fall Hazard, Hazard, Fall Egress No (Requires Rescue)
Shaft Risk Categories Risk Shaft Pit Risks Pit
No Fall Hazard Analysis Analysis
Fall Hazard, Hazard, Fall Egress Difficult (Difficult climb out)
Geologic Hazard Hazard Geologic - Geologic Hazard Hazard Geologic - Rocks at crest may often be loose loose often be may crest at Rocks and undercut Potential fall distance Potential over 50 feet locations many in • High Walls(Fall Risk) • Station #1Station Station #1Station
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Pit Risks Safeguards Place in Safeguards
Analysis
Slopes
Geologic Hazard Hazard Geologic - Geologic Hazard Analysis Hazard Geologic Oversteepened Beds Dipping Eroded WeakEroded Rock Warning Signs Warning Fences Netting Cable - • • Rock Falls Near Paths from (Risk (Risk from Paths Near Falls Rock Above and Below): • Safeguards in Place: in Safeguards • • • Station #1Station Station #1Station
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16
Geologic Hazard Characterization
– The Coliseum
Trail to Spring Street Spring to Trail Legal Mine Tender
– Legal Tender Mine - Hazards The Raceway
Mine Entrances Legal Tender Complex Geo Complex Tender Legal
- The Fire Pit Room The Ballroom Station #2 Station Kleinfelder Study Areas
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17 18
Geologic Hazard Characterization Geologic Hazard Characterization
– –
Legal Tender Mine Legal Tender Mine Hazard Category
Hazard Category
Qualitative Assessment Risk Qualitative Assessment Risk Qualitative Falling from height Potential fall rock Potential
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19 20
Geologic Hazard Characterization Geologic Hazard Characterization
– –
Legal Tender Mine Legal Tender Mine
Hazard Category Hazard Category Qualitative Assessment Risk Qualitative Assessment Risk Qualitative Disorientation Air quality Trips/slips Additional categories:hazard Collapse of chamber/entrapment
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22 Increasing 21
Probability Risk Matrix Risk
Increasing Geologic Hazard Characterization
– Geologic Hazard Characterization
– Low Low High High
Risk Ranking Risk Ranking
Classification Legal Tender Mine ) The Ballroom Risk Ranking Value System Ranking Risk Value Legal Tender Mine
Risk Matrix Risk Severity 2 2 6 6 Ranking Ranking – Value severity
Risk (probability X (probability
fatality. 1 2 3 3
Risk Value Severity Severity
occur occur not occur Description
What is risk? Event may or may Event less likely to 2 1 2 2 Event highly likely to
Risk
Value Probability Probability
3 1 2 Risk Matrix / Severity Probability
Probability
Injury requiring EMS or search and or Hospitalization response. rescue treatment. emergency Injury requiring minor firstaid treatment. Critical debilitating injury or height Hazard Rock fall chamber Potential Potential
Trips/slips
Collapse of
entrapment Falling from Very Least Least Risk= (probability of occurrence) X (severity ofconsequence) (2) (1) (3) ate Low High Probable Probable Probable Category Moder Probability
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23
24
Risk Matrix Risk Risk Matrix Risk Geologic Hazard Characterization
Low High High – Geologic Hazard Characterization
Extreme – Risk Ranking Classification ) 9 4 3 6 Legal Tender Mine Ranking Ranking Value Legal Tender Mine severity The RacewayThe
Risk (probability X (probability The Fire Pit Room –
2 1 3 3 – Risk Value Severity Severity 3 2 3 2 Risk Value Probability Probability / Risk Matrix
Risk Matrix Rock fall Trips/slips entrapment
Potential Hazard Potential Falling from height Collapse of chamber
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25
26
Risk Matrix Risk Risk Matrix Geologic Hazard Characterization
– Geologic Hazard Characterization
Ranking Low – Extreme Low Low High Risk Classification Extreme Risk Ranking Classification ) Legal Tender Mine The Coliseum ) Legal Tender Mine 9 3
Ranking Value 6 3 3 9 Ranking Ranking – severity Surface Hazards Value
severity Risk (probability X (probability Risk (probability X (probability – 3 1 3 3 1 3 Risk Value Risk Severity Severity Value Severity Severity 3 3 2 1 3 3 Risk Value Risk Value Probability Probability Probability Probability / Risk Matrix
Risk Matrix height Hazard Rock fall chamber Potential Potential Trips/slips
height Collapse of entrapment Falling from Hazard Potential Potential Trips/slips Falling from
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Biological Cultural
Biological CulturalAnd Resources Biological CulturalAnd Resources
- - Station #3 Station #3 Station
108 109 Safeguarding Abandoned Mines on Boston Hill | Silver City, NM Safeguarding Abandoned Mines on Boston Hill | Silver City, NM
Safeguarding Possibilities Safeguarding Possibilities
Possibilities and Opportunities Possibilities and Opportunities
- - Station #4 Station #4 Station
110 111 Safeguarding Abandoned Mines on Boston Hill | Silver City, NM Safeguarding Abandoned Mines on Boston Hill | Silver City, NM
Concepts
What Next? Possibilities and Opportunities
- Station #4 Station
112 113 Safeguarding Abandoned Mines on Boston Hill | Silver City, NM Safeguarding Abandoned Mines on Boston Hill | Silver City, NM
design
Design - into into Plan
-
vision
Phase 3 Phase
Phase 2 Phase ups of improvements of ups -
Construction Assistance
Mock site design session with stakeholders with session design site - 4 - . D model the the design D model - Develop community consensus Develop report for and AML for community report Develop Integrate community community Integrate On and community AML with solutions design Vet Prepare designs, elevations and sections elevations designs, Prepare Cost estimates 3
Coordinate design with experts in in biology, experts with design Coordinate for bidding design Refine engineers, archaeological resources archaeological engineers,
o o o o o o o o o o Draft a Report Reviewconstruction at substantial Monitor Monitor construction Phase Phase Develop Schematic Design Schematic Develop Public Meetings and Field Design Sessions
• •
• • • completion
114 115 Safeguarding Abandoned Mines on Boston Hill | Silver City, NM Safeguarding Abandoned Mines on Boston Hill | Silver City, NM
Discussion
Schedule
Assessment
Plan Construction Assistance Construction Design
– - – - TBD Completion in in 2013March, Completion Late April/Early May, 2013 2013 Summer, . . . . Phase 4 Phase Phase 1 Phase Phase 2 Phase Phase 3 Phase o o o o Preliminary Project Schedule PreliminaryProject
•
116 117 Safeguarding Abandoned Mines on Boston Hill | Silver City, NM Safeguarding Abandoned Mines on Boston Hill | Silver City, NM
Appendix B: Kleinfelder Phase II Site
including the ground surface and the following underground areas: the Ballroom, the Fire Pit Room, the Raceway and the Coliseum as presented on Figure 1. In each study area, the following potential hazards were evaluated:
May 7, 2013 Potential for rock fall Project No.: 130875 Potential for falling from height Potential for trips/slips
Mr. John Kretzmann, Program Manager Potential for disorientation Abandoned Mine Land Program Potential for collapse of chamber/entrapment 1220 S. Saint Francis Drive Santa Fe, NM 87505 Kleinfelder assessed the potential for the hazards listed above by performing visual
observations, analyzing photos, and examining data provided by Wilson and Company’s SUBJECT: Phase II Site Characterization Data Summary 3D LIDAR survey. Comments relating to the qualitative assessment of each hazard Legal Tender Mine potential are shown in Figures 3 through 7. Based on these hazard potential Silver City, NM assessments, the potential for risk was qualitatively evaluated in each study area. To evaluate the potential for risk, Kleinfelder created a Risk Matrix which considered the Dear Mr. Kretzmann: probability of a hazard occurring and the severity of harm to people should that hazard occur. Hazard probability and severity levels were qualitatively assigned numerical Kleinfelder West, Inc. (Kleinfelder) has prepared the following Site Characterization classifications to rank each potential hazard. The Risk Matrix and a description of risk Data Summary of the Legal Tender Mine in Silver City, New Mexico. The work was probability/severity are shown on Figure 2. performed in accordance with the scope of services presented in our proposal dated February 14, 2013. The work was performed for the Abandoned Mine Lands Program Using the risk matrix, Kleinfelder performed a qualitative risk evaluation for each study of the State of New Mexico (State). The site characterization and data collection effort area. The potential hazards in each study area were identified and assigned a was performed by Kleinfelder on March 4 through March 8, 2013. The data collected numerical risk value according to the Risk Matrix shown in Figure 2. Risk evaluation included geologic rock mass characterization and discontinuity mapping data within the results for each study area are presented on Figures 3 through 7. mine. In addition, geologic hazard observations were performed within the mine and at the surface. This information was used to perform a qualitative evaluation of risk and RISK PRESENTATIONS subsequent development of risk matrices for presentation to the Town of Silver City at a public meeting held on March 21, 2013. Kleinfelder presented the results of our qualitative geologic hazards study in a public meeting to the Town of Silver City, New Mexico on March 21, 2013. This included a RISK EVALUATIONS brief presentation to discuss our work and summarize our findings as well as an exhibit booth with an open-discussion PowerPoint presentation, photographs, and poster The purpose of the site characterization was to collect qualitative mine geologic hazards boards. A copy of the PowerPoint presentation and exhibit slides are provided on the data, analyze the data, and to prepare a qualitative risk ranking of the geologic hazards attached CD. that could be used to judge the relative safety of the mine in its current condition. The site characterization was performed on various areas within the Kleinfelder study area,
130875.2e-ALB13RP001 Page 2 of 6 May 7, 2013 Copyright 2013 Kleinfelder Rev. 0
130875.2e-ALB13RP001 Page 1 of 6 May 7, 2013 Copyright 2013 Kleinfelder Rev. 0 KLEINFELDER 9019 Washington St. NE Building A. Albuquerque, NM 87113 p| 505.344.7373 f| 505.344.1711
KLEINFELDER 9019 Washington St. NE Building A. Albuquerque, NM 87113 p| 505.344.7373 f| 505.344.1711
118 119 Safeguarding Abandoned Mines on Boston Hill | Silver City, NM Safeguarding Abandoned Mines on Boston Hill | Silver City, NM
ROCK MASS CHARACTERIZATION AND DISCONTINUITY MAPPING DISCUSSION
Rock mass and rock discontinuity data was collected in several underground areas of Kleinfelder performed qualitative evaluations of the areas of the mine most accessible to the mine to assist in our qualitative evaluation of risk. Rock mass data, discontinuity the public. Extreme risks were identified in almost all areas of the surface and data, and a location map are presented in Appendix A. underground rooms. The ground surface of the mine is characterized by a rugged, uneven grade containing numerous open chutes and stopes ranging from 5 to 50 feet in Rock mass data collection included: diameter. Hiking trails are popular on Boston Hill and many pedestrians frequent the
• Locality type ground surface area of the Legal Tender mine without knowledge of the openings that • Rock feature length exist. One of these large openings, or collapsed stopes is The Coliseum which has • Rock feature height steep, vertical walls which presents a fall danger to those at the surface and a rock fall • Rock mass color hazard to anyone inside.
• Rock mass grain size • Intact rock uniaxial compressive strength Entrance to the underground portion of the mine is through the Ballroom which contains many overhanging loose blocks present at the entrance arch. There is also an adit on • Rock mass fabric • Rock mass block size the north side of the Ballroom leading to the surface which shows evidence of tabular block failures. Falling rock is also an extreme hazard in the Fire Pit room which is • Rock mass state of weathering • Number of discontinuity sets littered with rock debris of varying sizes (cobbles to table-sized blocks) and has broken lagging in the roof holding back rock. Additional areas of concern are the Raceway and
The rock discontinuity data collected included: Southeastern Rooms and Drifts. They have minimal access to natural light and they are extensive, with many unexplored passages in the Southeastern Rooms and Drifts and • Location of the discontinuity multiple ledges and levels in the Raceway. This creates the risk of disorientation, • Type of discontinuity potential entrapment and falls from heights along with tabular block failures and cracked • Discontinuity dip angle and direction pillars. • Discontinuity persistence • Discontinuity termination Given the many observed hazards and the severity of the risk levels currently present, • Discontinuity aperture width the State should consider immediate implementation of measures to prevent people • Discontinuity filling (or lack of) from entering the fenced-in area. This includes fortifying the existing fence to keep • Discontinuity wall strength people from entering the mine or traversing the surface. Warning signs should also be • Discontinuity surface roughness and shape posted to alert people of the extreme safety hazards at the Legal Tender Mine. • Barton’s joint roughness coefficient (JRC) value • Presence or lack of water LIMITATIONS • Discontinuity spacing
This work described in this summary was performed in a manner consistent with that Kleinfelder used the rock mass and discontinuity data to assist in our qualitative level of care and skill ordinarily exercised by other members of Kleinfelder’s profession evaluation of the hazards within the underground workings. This data may be also used practicing in the same locality, under similar conditions and at the date the services are for future quantitative analysis of stability at the Legal Tender Mine. 130875.2e-ALB13RP001 Page 3 of 6 May 7, 2013 130875.2e-ALB13RP001 Page 4 of 6 May 7, 2013 Copyright 2013 Kleinfelder Rev. 0 Copyright 2013 Kleinfelder Rev. 0
KLEINFELDER 9019 Washington St. NE Building A. Albuquerque, NM 87113 p| 505.344.7373 f| 505.344.1711 KLEINFELDER 9019 Washington St. NE Building A. Albuquerque, NM 87113 p| 505.344.7373 f| 505.344.1711
120 121 Safeguarding Abandoned Mines on Boston Hill | Silver City, NM Safeguarding Abandoned Mines on Boston Hill | Silver City, NM
provided. Our conclusions, opinions, and recommendations are based on a limited number of observations and data. It is possible that conditions could vary between or beyond the data evaluated. Kleinfelder makes no other representation, guarantee, or warranty, express or implied, regarding the services, communication (oral or written), summary, opinion, or instrument of service provided.
Kleinfelder offers various levels of investigative and engineering services to suit the varying needs of different clients. Although risk can never be eliminated, more detailed and extensive studies yield more information, which may help understand and manage the level of risk. Since detailed study and analysis involves greater expense, our clients participate in determining levels of service, which provide information for their purposes at acceptable levels of risk. The client and key members of the design team should discuss the issues covered in this summary with Kleinfelder, so that the issues are understood and applied in a manner consistent with the owner’s budget, tolerance of risk and expectations for future performance and maintenance.
The information included on graphic representations in this summary has been compiled from a variety of sources and is subject to change without notice. Kleinfelder makes no representations or warranties, express or implied, as to accuracy, completeness, timeliness, or rights to the use of such information. These documents are not intended for use as a land survey product nor are they designed or intended as a construction design document. The use or misuse of the information contained on these graphic representations is at the sole risk of the party using or misusing the information.
This summary may be used only by the Client and the registered design professional in responsible charge and only for the purposes stated for this specific engagement within a reasonable time from its issuance, but in no event later than two (2) years from the date of the summary. The observations presented in this summary should not be extrapolated to adjacent sites or used for other projects without our written approval.
130875.2e-ALB13RP001 Page 5 of 6 May 7, 2013 Copyright 2013 Kleinfelder Rev. 0
KLEINFELDER 9019 Washington St. NE Building A. Albuquerque, NM 87113 p| 505.344.7373 f| 505.344.1711
122 123 Safeguarding Abandoned Mines on Boston Hill | Silver City, NM Safeguarding Abandoned Mines on Boston Hill | Silver City, NM
Risk Probability
The Raceway PLOTTED: 19 Apr 2013, 9:06am, pdan
Severity of Harm
The Coliseum DD Figures\130875_01.mxd
The Ballroom
.
Risk Matrix
The Fire Pit Room
100 50 0 100 Feet
The information included on this graphic representation has been LEGEND compiled from a variety of sources and is subject to change The information included on this graphic representation has been compiled from a variety of without notice. Kleinfelder makes no representations or warranties, sources and is subject to change without notice. Kleinfelder makes no representations or
express or implied, as to accuracy, completeness, timeliness, or SOURCES: Kleinfelder Project Distinct Inves tigation CAD FILE: C:\Users\pdan\appdata\local\temp\AcPublish_25584\ LAYOUT: Layout1 warranties, express or implied, as to accuracy, completeness, timeliness, or rights to the use of rights to the use of such information. This document is not intended 1. Bing maps, (c) 2010 Microsoft Corporation Area (fenced) Areas such information. This document is not intended for use as a land survey product nor is it for use as a land survey product nor is it designed or intended as a designed or intended as a construction design document. The use or misuse of the information construction design document. The use or misuse of the information and its data suppliers contained on this graphic representation is at the sole risk of the party using or misusing the information. contained on this graphic representation is at the sole risk of the 2. LIDAR point could image from Wilson & party using or misusing the information. Company, Inc., March 2013. FIGURE PROJECT NO. 130875 FIGURE PROJECT NO. 130875 RISK EVALUATION LEVELS AND RISK MATRIX DRAWN: 4/16/2013 DRAWN: 4/16/2013 LEGAL TENDER MINE/GLOBE COMPLEX DRAWN BY: PD LEGAL TENDER MINE/GLOBE COMPLEX DRAWN BY: PD BOSTON HILL BOSTON HILL CHECKED BY: MV SILVER CITY, NEW MEXICO CHECKED BY: MV SILVER CITY, NEW MEXICO 2 ORIGINATOR: M. MONCILOVICH DRAWING FILE NAME: ORIGINATOR: M. MONCILOVICH DRAWING FILE NAME: www.kleinfelder.com www.kleinfelder.com CATEGORY: 2 130875_01.MXD CATEGORY: 2 130875_02.dwg J. NORTH
ATTACHED IMAGES: ATTACHED XREFS: APPROVED BY: APPROVED BY: J. NORTH ALBUQUERQUE, NM Path: G:\Geotech\Projects\130875 Information\2.8r Mine\2.0Technical-CA Technical -ENMRD-Legal- Tende
124 125 Safeguarding Abandoned Mines on Boston Hill | Silver City, NM Safeguarding Abandoned Mines on Boston Hill | Silver City, NM 3 4 FIGURE FIGURE 2 2 . DRAWING CATEGORY: DRAWING CATEGORY: PLOTTED: 19 Apr 2013, 11:00am, pdan PLOTTED: 19 Apr 2013, 11:01am, pdan BOSTON HILL BOSTON HILL BALLROOM FIRE PIT ROOM J. NORTH J. NORTH SILVER CITY, NEW MEXICO SILVER CITY, NEW MEXICO RISK EVALUATION RISK EVALUATION M. MONCILOVICH M. MONCILOVICH LEGAL TENDER MINE/GLOBE COMPLEX LEGAL TENDER MINE/GLOBE COMPLEX ORIGINATOR: APPROVED BY: ORIGINATOR: APPROVED BY: PD PD MV MV 130875 130875 4/16/2013 4/16/2013 FILE NAME: FILE NAME: DRAWN BY: CHECKED BY: DRAWN BY: CHECKED BY: PROJECT NO. DRAWN: PROJECT NO. DRAWN: 130875_03.dwg 130875_03.dwg Risk Evaluation, Fire Pit Room Risk Evaluation, Ballroom www.kleinfelder.com www.kleinfelder.com a a no no for for design design from from graphic graphic makes makes intended intended this this completeness, completeness, not not on on compiled compiled is is construction construction a a Kleinfelder Kleinfelder been been as as accuracy, accuracy, has has contained contained to to document document notice. notice. as as This This intended intended or or without without implied, implied, information information representation representation or or the the information. information. change change designed designed it it to to of of is is graphic graphic such such express express of of nor nor this this subject subject misuse misuse use use on on is is or or the the product product to to warranties, warranties, and and use use included included or or survey survey rights rights The The or or sources sources land land of of a a information information as as The The timeliness, document. timeliness, document. variety variety use use representation is at the sole risk of party using or misusing information. representation is at the sole risk of party using or misusing information. representations representations ATTACHED IMAGES: ATTACHED XREFS: ATTACHED IMAGES: ATTACHED XREFS: CAD FILE: C:\Users\pdan\appdata\local\temp\AcPublish_25584\ LAYOUT: Layout1 CAD FILE: C:\Users\pdan\appdata\local\temp\AcPublish_25584\ LAYOUT: Layout2 ALBUQUERQUE, NM ALBUQUERQUE, NM
126 127 Safeguarding Abandoned Mines on Boston Hill | Silver City, NM Safeguarding Abandoned Mines on Boston Hill | Silver City, NM 5 6 FIGURE FIGURE 2 2 DRAWING CATEGORY: DRAWING CATEGORY: PLOTTED: 19 Apr 2013, 9:05am, pdan PLOTTED: 19 Apr 2013, 11:01am, pdan BOSTON HILL BOSTON HILL COLISEUM THE RACEWAY J. NORTH J. NORTH SILVER CITY, NEW MEXICO SILVER CITY, NEW MEXICO RISK EVALUATION RISK EVALUATION M. MONCILOVICH M. MONCILOVICH LEGAL TENDER MINE/GLOBE COMPLEX LEGAL TENDER MINE/GLOBE COMPLEX ORIGINATOR: APPROVED BY: ORIGINATOR: APPROVED BY: PD PD MV MV 130875 130875 4/16/2013 4/16/2013 FILE NAME: FILE NAME: DRAWN BY: CHECKED BY: DRAWN BY: CHECKED BY: PROJECT NO. DRAWN: PROJECT NO. DRAWN: 130875_03.dwg 130875_03.dwg Risk Evaluation, Coliseum Risk Evaluation, The Raceway www.kleinfelder.com www.kleinfelder.com a a no no for for design design from from graphic graphic makes makes intended intended this this completeness, completeness, not not compiled on compiled on is is construction construction a a Kleinfelder Kleinfelder been been as as accuracy, accuracy, has has contained contained to to document document notice. notice. as as This This intended intended or or without without implied, implied, information information representation representation or or the the information. information. change change designed designed it it to to of of is is graphic graphic such such express express of of nor nor this this subject subject misuse misuse use use on on is is or or the the product product to to warranties, warranties, and and use use included included or or survey survey rights rights The The or or sources sources land land of of a a information information as as The The timeliness, document. timeliness, document. variety variety use use representations representations representation is at the sole risk of party using or misusing information. representation is at the sole risk of party using or misusing information. ATTACHED IMAGES: ATTACHED XREFS: ATTACHED IMAGES: ATTACHED XREFS: CAD FILE: C:\Users\pdan\appdata\local\temp\AcPublish_25584\ LAYOUT: Layout3 CAD FILE: C:\Users\pdan\appdata\local\temp\AcPublish_25584\ LAYOUT: Layout4 ALBUQUERQUE, NM ALBUQUERQUE, NM
128 129 Safeguarding Abandoned Mines on Boston Hill | Silver City, NM Safeguarding Abandoned Mines on Boston Hill | Silver City, NM 7 FIGURE 2
BA-1 DRAWING CATEGORY: PLOTTED: 03 May 2013, 9:17am, pdan
BOSTON HILL Pillars J. NORTH SILVER CITY, NEW MEXICO RISK EVALUATION GROUND SURFACE M. MONCILOVICH LEGAL TENDER MINE/GLOBE COMPLEX DD Figures\130875_A-1.mxd
B-1 ORIGINATOR: APPROVED BY: PD MV
130875 FP-1 4/16/2013 FILE NAME: DRAWN BY: CHECKED BY: PROJECT NO. DRAWN: 130875_03.dwg Risk Evaluation, Ground Surface www.kleinfelder.com a no for 100 50 0 100 design from graphic makes intended this
completeness, Feet not compiled on
is construction a Kleinfelder been
as The information included on this graphic representation has been LEGEND accuracy, has contained to compiled from a variety of sources and is subject to change document notice.
as without notice. Kleinfelder makes no representations or warranties, This intended express or implied, as to accuracy, completeness, timeliness, or SOURCES: Kleinfelder Project Rock Mass and or without rights to the use of such information. This document is not intended 1. Bing maps, (c) 2010 Microsoft Corporation Area (fenced) Discontinuit y Data implied, information for use as a land survey product nor is it designed or intended as a representation
or and its data suppliers
the construction design document. The use or misuse of the information Lo cation information. change designed it to
of contained on this graphic representation is at the sole risk of the 2. LIDAR point cloud image from Wilson & is graphic such party using or misusing the information. express
of Company, Inc., March 2013 nor this subject misuse use on
is PROJECT NO. 130875
or APPENDIX the
product to warranties, and use included or DRAWN: 4/16/2013
survey rights The or sources land of a DRAWN BY: PD LEGAL TENDER MINE/GLOBE COMPLEX information as BOSTON HILL The timeliness, document. variety use representations representation is at the sole risk of party using or misusing information. CHECKED BY: MV SILVER CITY, NEW MEXICO ATTACHED IMAGES: ATTACHED XREFS: CAD FILE: G:\Geotech\Projects\130875 -ENMRD-Legal Tender Mine\2.0 Technical Information\2.8 - Technical-CADD Figures\ LAYO UT: Layout5 ALBUQUERQUE, NM FILE NAME: ORIGINATOR: M. MONCILOVICH DRAWING www.kleinfelder.com CATEGORY: 2 130875_01.MXD APPROVED BY: J. NORTH Path: G:\Geotech\Projects\130875 Information\2.8r Mine\2.0Technical-CA Technical -ENMRD-Legal- Tende
130 131 Safeguarding Abandoned Mines on Boston Hill | Silver City, NM Safeguarding Abandoned Mines on Boston Hill | Silver City, NM
132 133 Safeguarding Abandoned Mines on Boston Hill | Silver City, NM Safeguarding Abandoned Mines on Boston Hill | Silver City, NM
134 135 Safeguarding Abandoned Mines on Boston Hill | Silver City, NM Safeguarding Abandoned Mines on Boston Hill | Silver City, NM
136 137 Safeguarding Abandoned Mines on Boston Hill | Silver City, NM Safeguarding Abandoned Mines on Boston Hill | Silver City, NM
138 139 Safeguarding Abandoned Mines on Boston Hill | Silver City, NM Safeguarding Abandoned Mines on Boston Hill | Silver City, NM
140 141 Safeguarding Abandoned Mines on Boston Hill | Silver City, NM Safeguarding Abandoned Mines on Boston Hill | Silver City, NM
142 143 Safeguarding Abandoned Mines on Boston Hill | Silver City, NM Safeguarding Abandoned Mines on Boston Hill | Silver City, NM Open House Exhibit Hazards Characterization Legal Tender Mine Geologic
144 145 Safeguarding Abandoned Mines on Boston Hill | Silver City, NM Safeguarding Abandoned Mines on Boston Hill | Silver City, NM 2 3 Legal Tender Mine – Geologic Hazard Characterization Legal Tender Mine – Geologic Hazard Characterization Legal Tender Mine Location Limits of Legal Tender Mine - Mine deepens- from west to Depth east ranging- from 10 feet Rooms, to pillars, 130 drifts feet (tunnels)
146 147 Safeguarding Abandoned Mines on Boston Hill | Silver City, NM Safeguarding Abandoned Mines on Boston Hill | Silver City, NM 5 4 Risk Rating Probability The Coliseum Legal Tender Mine – Geologic Hazard Characterization Legal Tender Mine – Geologic Hazard Characterization The Raceway Risk Ranking The Fire Pit Room Severity of Consequence The Ballroom Kleinfelder Study Areas
148 149 Safeguarding Abandoned Mines on Boston Hill | Silver City, NM Safeguarding Abandoned Mines on Boston Hill | Silver City, NM 6 7 Legal Tender Mine – Geologic Hazard Characterization Legal Tender Mine – Geologic Hazard Characterization The Ballroom The Ballroom Underground Location
150 151 Safeguarding Abandoned Mines on Boston Hill | Silver City, NM Safeguarding Abandoned Mines on Boston Hill | Silver City, NM 8 9 Legal Tender Mine – Geologic Hazard Characterization Legal Tender Mine – Geologic Hazard Characterization The Ballroom The Ballroom
152 153 Safeguarding Abandoned Mines on Boston Hill | Silver City, NM Safeguarding Abandoned Mines on Boston Hill | Silver City, NM 10 11 Legal Tender Mine – Geologic Hazard Characterization Legal Tender Mine – Geologic Hazard Characterization The Ballroom The Ballroom
154 155 Safeguarding Abandoned Mines on Boston Hill | Silver City, NM Safeguarding Abandoned Mines on Boston Hill | Silver City, NM 13 12 Legal Tender Mine – Geologic Hazard Characterization Legal Tender Mine – Geologic Hazard Characterization The Ballroom The Ballroom
156 157 Safeguarding Abandoned Mines on Boston Hill | Silver City, NM Safeguarding Abandoned Mines on Boston Hill | Silver City, NM 14 15 Legal Tender Mine – Geologic Hazard Characterization Legal Tender Mine – Geologic Hazard Characterization The Ballroom The Ballroom
158 159 Safeguarding Abandoned Mines on Boston Hill | Silver City, NM Safeguarding Abandoned Mines on Boston Hill | Silver City, NM 16 17 Legal Tender Mine – Geologic Hazard Characterization Legal Tender Mine – Geologic Hazard Characterization The Fire Pit Room The Ballroom
160 161 Safeguarding Abandoned Mines on Boston Hill | Silver City, NM Safeguarding Abandoned Mines on Boston Hill | Silver City, NM 18 19 Legal Tender Mine – Geologic Hazard Characterization Legal Tender Mine – Geologic Hazard Characterization The Fire Pit Room Underground Location The Fire Pit Room
162 163 Safeguarding Abandoned Mines on Boston Hill | Silver City, NM Safeguarding Abandoned Mines on Boston Hill | Silver City, NM 21 20 Legal Tender Mine – Geologic Hazard Characterization Legal Tender Mine – Geologic Hazard Characterization The Fire Pit Room The Fire Pit Room
164 165 Safeguarding Abandoned Mines on Boston Hill | Silver City, NM Safeguarding Abandoned Mines on Boston Hill | Silver City, NM 22 23 Legal Tender Mine – Geologic Hazard Characterization Legal Tender Mine – Geologic Hazard Characterization The Fire Pit Room The Fire Pit Room
166 167 Safeguarding Abandoned Mines on Boston Hill | Silver City, NM Safeguarding Abandoned Mines on Boston Hill | Silver City, NM 24 25 Legal Tender Mine – Geologic Hazard Characterization Legal Tender Mine – Geologic Hazard Characterization The Coliseum The Fire Pit Room
168 169 Safeguarding Abandoned Mines on Boston Hill | Silver City, NM Safeguarding Abandoned Mines on Boston Hill | Silver City, NM 26 27 The Coliseum Legal Tender Mine – Geologic Hazard Characterization Legal Tender Mine – Geologic Hazard Characterization Underground Location The Coliseum
170 171 Safeguarding Abandoned Mines on Boston Hill | Silver City, NM Safeguarding Abandoned Mines on Boston Hill | Silver City, NM 28 29 Legal Tender Mine – Geologic Hazard Characterization Legal Tender Mine – Geologic Hazard Characterization The Coliseum The Coliseum
172 173 Safeguarding Abandoned Mines on Boston Hill | Silver City, NM Safeguarding Abandoned Mines on Boston Hill | Silver City, NM 30 31 Legal Tender Mine – Geologic Hazard Characterization Legal Tender Mine – Geologic Hazard Characterization The Raceway The Coliseum
174 175 Safeguarding Abandoned Mines on Boston Hill | Silver City, NM Safeguarding Abandoned Mines on Boston Hill | Silver City, NM 32 33 Legal Tender Mine – Geologic Hazard Characterization Legal Tender Mine – Geologic Hazard Characterization The Raceway Underground Location The Raceway
176 177 Safeguarding Abandoned Mines on Boston Hill | Silver City, NM Safeguarding Abandoned Mines on Boston Hill | Silver City, NM 34 35 Legal Tender Mine – Geologic Hazard Characterization Legal Tender Mine – Geologic Hazard Characterization The Raceway The Raceway
178 179 Safeguarding Abandoned Mines on Boston Hill | Silver City, NM Safeguarding Abandoned Mines on Boston Hill | Silver City, NM 37 36 Legal Tender Mine – Geologic Hazard Characterization Legal Tender Mine – Geologic Hazard Characterization The Surface The Raceway
180 181 Safeguarding Abandoned Mines on Boston Hill | Silver City, NM Safeguarding Abandoned Mines on Boston Hill | Silver City, NM 38 39 Legal Tender Mine – Geologic Hazard Characterization Legal Tender Mine – Geologic Hazard Characterization The Surface The Surface
182 183 Safeguarding Abandoned Mines on Boston Hill | Silver City, NM Safeguarding Abandoned Mines on Boston Hill | Silver City, NM 41 40 Legal Tender Mine – Geologic Hazard Characterization Legal Tender Mine – Geologic Hazard Characterization The Surface The Surface
184 185 Safeguarding Abandoned Mines on Boston Hill | Silver City, NM Safeguarding Abandoned Mines on Boston Hill | Silver City, NM
186 187 Safeguarding Abandoned Mines on Boston Hill | Silver City, NM Safeguarding Abandoned Mines on Boston Hill | Silver City, NM
188 189 Safeguarding Abandoned Mines on Boston Hill | Silver City, NM Safeguarding Abandoned Mines on Boston Hill | Silver City, NM
Appendix C: Field Meeting #1
10, 2013 - TOWN OF SILVER CITY PRESENTATION CITY OF SILVER TOWN NM ABANDONED MINE LAND PROGRAM Abandoned of for Safeguarding the and Design Plan Mexico New City, Silver in Hill Boston on Mines Community Field Design Meeting, August 8
190 191 Safeguarding Abandoned Mines on Boston Hill | Silver City, NM Safeguarding Abandoned Mines on Boston Hill | Silver City, NM
- anager M
on site on site on
Plan/Design Plan/Design Plan/Design Plan/Design
Teams Lunch Teams Regroup Regroup discussand
STAFF 1:00
11:30 4:00 5:00 -
- - -
Friday, August 9 August Friday, 8:30 11:30 1:00 4:00 AML John John Kretzmann, PE, AML Program James Smith, AML James AML Smith, Project Manager
Land (AML) Program
Mine
Wrap up
-
on site on on site on on site on is AML?
Boston Hill Hill Boston Bat Habitat presentation
Design
funded state program, formed through the passage of the Surface Mining Control Control theMining of the passage Surface through formed program, funded state - Act (SMCRA). (SMCRA). Act Plan/Design Plan/Design Plan/Design Plan/Design Plan/
What
Altenbach Project Overview Teams Lunch of Results Presentations Introductions Orientation Design Dr. Teams Visit Visit Legal Tender Complex Lunch Teams Regroup discussand
is a federally 1:00 11:30 1:00
9:30 10:00 3:30 5:00 - - -
11:30 3:00
------Agenda
AML AML funding sunsets program in 2021. rock mines (i.e. Boston Hill) when obvious hazards are apparent. AML has worked on in HillBoston AML has worked apparent. are when mines Hill) Boston (i.e.rock obvious hazards the past. AML is funded through a tax on existing coal mined within a state. AML works AML works on abandoned hard mined withina state. coal on existing tax a AML isthrough funded and Reclamation and Reclamation
11:30 1:00 9:00 Thursday, August Thursday, August 8 AM 8:30 8:45 9:30 10 August Saturday, 10:00
11:30 1:00 4:00
The New Mexico AML Program, part of the New Mexico Energy, Minerals, and Natural and Natural Minerals, Energy, part of the New Mexico AML Program, The New Mexico the of abandonedthroughout mines the reclamation addresses Department, Resources onproperty. both public and private state o o o The New Mexico Abandoned
192 193 Safeguarding Abandoned Mines on Boston Hill | Silver City, NM Safeguarding Abandoned Mines on Boston Hill | Silver City, NM
practices.
facilitate the higher priority facilitate
health, safety and property from and from health, property safety
public from hazards that do not constitute do that not constitute hazards public from
historic mining historic from resulting
hazards. Restoration must must Restoration ature of Boston Hill of Boston ature AML Priorities AML rock mining AML and Boston Hill and Boston AML N - : Protect the 2 : Protect Wildlife habitat Wildlife Hard Proximity to Silver City to Proximity Multiple landowners interests Diverse stakeholder o o o o o for constructed facilities constructed for immediate hazards hazards immediate Priority immediate Priority 1: Protect public public 1: Protect Priority mining historic by degraded and landswater 3: Restore Priority practices. reclamation. Characteristics Hill of Boston Characteristics and Maintenance Operations Program Limited Funding Limitations Boston Hill Hill Land Boston Ownership • • The AML program funding priorities: The AML program •
• • • The Unique • capacity unique funding and organizational AML’s
194 195 Safeguarding Abandoned Mines on Boston Hill | Silver City, NM Safeguarding Abandoned Mines on Boston Hill | Silver City, NM
Hill
n Boston Safeguarding Current Phase - Current
Scope of Work Design Assistance Construction Approach o Plan - - - - Assessment Preliminary AML Preliminary AML Phase 3 Phase 2 Phase 4 Phase I Phase expertise local knowledge and Integrate design into Recognizes landownership diverse Recognizes action option No Respect the legacy mining of legacy the Respect o o o o o o o o
196 197 Safeguarding Abandoned Mines on Boston Hill | Silver City, NM Safeguarding Abandoned Mines on Boston Hill | Silver City, NM
going responsibilities - going - TBD
Status 10, 2013 the landscape is not a “natural” landscape is and landscape a “natural” is not landscape the
What Can We Do? What Can We
– - – What to Keep in Mind - March 15, 2013 August 8 August
Possible second meeting second Possible 80% done 80% Reconnaissance o Legal tender safeguard = Town acquisition acquisition Town = safeguard tender Legal sacrificing the feeling of exploring the mines Safety and curiosity curiosity and Safety mines the exploring of feeling the sacrificing balance need City needs awareness of on Don’t opportunity this on Don’t miss out Stabilizing the Legal Tender mine? Maintain natural look, keep keep look, natural mine? Maintain Tender Legal the Stabilizing stone native and work rock with rough and natural Signage of potential hazards, safety and history at trailheads trailheads at history and safety hazards, potential of Signage Minimize engineered features engineered Minimize The abandoned mine features are manmade and are now now and are manmade features are mine abandoned The naturalized “experience of risk” without the apparent risk into the Transition naturally eroding, eroding, naturally Task II Project II Task Design Meeting Field Community Site Site Public Meeting
• • Opportunities • Values • •
• • •
• • •
Public Meeting Outcomes
Current
198 199 Safeguarding Abandoned Mines on Boston Hill | Silver City, NM Safeguarding Abandoned Mines on Boston Hill | Silver City, NM Hill
.
Boston Hill as Hill Boston
Boston Boston
. Silver City City Silver when sentiment a space that is of the that is a space Envision of Silver center City the and the town emanates outward. What would patterns develop? Imagine may 550 the surrounds acres Town to the represent City? of Silver Envision materials/details/forms sense of a that give place What does Boston Boston Hill What does o o o o reating reating design the safeguarding features features design the safeguarding users, c reflect community community reflect
and the appropriate safeguarding measures the safeguarding appropriate
participants participants recognizes that Boston Hill that Hill and is a community that resource Boston recognizes thinking big opinions regarding regarding opinions
- constructed on Boston Hill. Hill. on Boston constructed Design Field Design Meeting Design meetings will integrate community Design will meetings input design decisions integrate into form is form from derived Goals of the Community he T
site. The AML program there are diverse that and respect prerogatives landowner without concerns. sacrificing landowner Field that may be Stakeholders, and landowners collaboratively and collaboratively landowners Stakeholders,
o o o o
200 201
Safeguarding Abandoned Mines on Boston Hill | Silver City, NM App Safeguarding Abandoned Mines on Boston Hill | Silver City, NM
Approach Design Orientation
202 203 Safeguarding Abandoned Mines on Boston Hill | Silver City, NM Safeguarding Abandoned Mines on Boston Hill | Silver City, NM
Approach Approach
204 205 Safeguarding Abandoned Mines on Boston Hill | Silver City, NM Safeguarding Abandoned Mines on Boston Hill | Silver City, NM
Approach
Site
206 207 Safeguarding Abandoned Mines on Boston Hill | Silver City, NM Safeguarding Abandoned Mines on Boston Hill | Silver City, NM
Site Site
208 209 Safeguarding Abandoned Mines on Boston Hill | Silver City, NM Safeguarding Abandoned Mines on Boston Hill | Silver City, NM
take take
Draw it, it, Draw gateways, columns, columns, gateways, ceilings etc… ceilings and stopes, wall(s), wall(s), construction feasibility. feasibility. construction
bench locations. Note the locations on the Note benchlocations locations.
alignments of walls, of walls, alignments
deterioration of deterioration . of concern alignments, alignments, sites sites length, height length, Safety Focus Safety walls, possible paths walls, at of
Note Note
Design Process
entry into Legal Tender Mine, shafts or adits. Legal Tender entry into maps.
No Please sign the Waiver Form Form Pleasethe Waiver sign Pleasegood wear shoes, sunscreen, and hat
Identify safety concern(s). Measure extent of hazard(s). of hazard(s). extent Measure concern(s). safety Identify pictures of conditions. Take note of frequency of visitation (if (if possible), of of frequency note visitation of conditions. Take pictures visible trail, to Proximity intersections Identify prominent views. Identify prominent List possible solutions, List strengths and weaknesses of each potential of and each weaknesses potential possiblestrengths solutions, List and discuss solutions and solution, draw special points, overlooks prominent of views, locations Stake Stake and string line line and or paint string Stake Take pictures of staked of staked pictures Take the o o o o Logistics: Team members and AML staff will break into groups with attendees with attendees groups into will break and AML staff members Team Logistics: to plan and design o o o o Design Task: task: Planning o
210 211 Safeguarding Abandoned Mines on Boston Hill | Silver City, NM Safeguarding Abandoned Mines on Boston Hill | Silver City, NM
discovery -
spaces unframed
of
equence
and Paths
marking /trail
Views Views framed and
- Orientation
elements
Grade/slope Boundaries Wayfinding and trails/s Paths Drives/Parking Drives/Parking Entries/gateways
Repose/Rest/seating Glimpses Arrival Repose/rest/seating city Silver into Views down Exit Gathering/Centers Entries/ gateways Entries/ Defining space Walls/Columns Defining space Design elements
- Land Ownership Map
- Approach
Site o
o
212 213 Safeguarding Abandoned Mines on Boston Hill | Silver City, NM Safeguarding Abandoned Mines on Boston Hill | Silver City, NM
Meeting Minutes 2. Must be protected from sun exposure 3. 20:1 expansion ratio Project No.: 12-0089.001 4. Off-gassing is negligible Project: Safeguarding Boston Hill iv. Backfilling Date: Wednesday, August 7, 2013 1. Process is the use of waste rock to fill mine openings or subsidence Place: Boston Hill, Silver City, NM v. Bat Compatible Steel Enclosure 1. 4x4 HSS filled with concrete and manganal steel bar Attending: Dekker/Perich/Sabatini, AML 2. Often have access gates for maintenance or bat research By: Lana Idriss, Ken Romig 3. Non- structural 4. Allows views to interior of mine workings Copies To: Parties Present vi. Buckhead Rock Wall Issue Date: 1. Mortared native/waste rock wall 2. Non structural Discussion Items: vii. Geosynthetically Confined Soil 1. Team Orientation Site Visit to the Legal Tender mine complex 1. Have bearing capacities and safety factors more than 10 times those of mechanically a. Overall Site Visit Notes: stabilized earth walls i. Looked at the feasibility of stabilizing 2. Facing options include natural vegetation, wire mesh, natural stone, concrete block, or ii. Portions of the complex for human entry sculpted shotcrete iii. Safeguarding the mines for who? Partying teenager, caver/spelunker, visitors, residents who know 3. Even the lightest walls are designed to withstand loads over 20 tons per square foot the risk b. Looked at entrance and approach into the site. i. Currently there are no trash receptacles at entrance or places for people to sit. g. Other possibilities to keep the experience of the mine ii. There is a kiosk at the entrance of the trailhead and a water fountain i. Bridge iii. Signs along the trail leading to legal tender have been vandalized ii. Steel steps, into workings iv. Beautiful views leading up the hill, 8-10% slope, would be nice to have places to stop catch your iii. Overlooks breath and observe iv. Entrance access to only a certain point c. Legal Tender v. Amphitheater to observe bats, study geology and vegetation i. Fences are breached, signs are shot up ii. Overall discussions concerned levels of danger associated with access to the underground workings. Priority will be given to certain areas based on the proximity to trail access and level of danger associated with them. d. East Mine Entry and Fire Pit Room i. Discussed safety hazards of falling rock and loose debris over the entrance (collar) of the mine. ii. Columns supporting the mine roof have spalling and cracking associated from compressive forces. iii. Observed signs of old bat guano and one bat. iv. Graffiti, Trash and frequent use was evident v. Looked at areas for bat observation outside of the Mine Entry. This report is assumed to be a true and accurate account of this communication unless notice to the contrary is e. Coliseum received within 10 calendar days of issue. i. The Coliseum is currently fox habitat ii. Steep slope with loose rock surrounding the collar of the coliseum End of Minutes f. Fundamentals of Safegaurding Measures i. High tensile steel mesh 1. Can handle significant weight/ however will not allow vehicle- bikes and motorcycles are also not advisable 2. Manufacturers does not advise heavy traffic 3. Installation must be horizontal, if it is installed vertically it is susceptible to vandalism 4. Mesh is subject to vandalism 5. Cutting- mesh will fray if there are sharp rock edges around the collar 6. Mesh is secured with a rock or soil anchor 3’-0” from collar in competent rock 7. Mesh can act like a trampoline and has some bounce 8. Mesh will support the weight of a person, smaller mesh can be used to accommodate walking - and will encourage walking on the mesh ii. Tire Plug 1. Process involves- insertion of tire(s) into openings, cabling the tires together, backfilling with waste rock and plating slopes with stone. 2. Tires are not visible 3. Tires do not constitute stabilization of ceilings. However, the tires can support some weight if ceiling shifts/collapses iii. Poly Foam Plug 1. Process involves mixing two compounds together in a bucket and pouring the mixture into the opening. Mix expands, similar to insulation foams L:\12-0089.001 Boston Hill\Task II- Plan\Community Field Design Meeting 1\Meeting Notes\MM-2013-08-07.doc L:\12-0089.001 Boston Hill\Task II- Plan\Community Field Design Meeting 1\Meeting Notes\MM-2013-08-07.doc
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1. Double cable netting – easy to vandalize Meeting Minutes 2. Shotcrete or Gunite 3. Backfill and put up a bat gate Project No.: 12-0089.001 4. Fill depression in and create an amphitheater seating for bat observation Project: Safeguarding Boston Hill 5. Tours, transfer the property to the city with the university providing bat tours th Date: Thursday August 8 , 2013 6. Establish paths on stable ground in areas not subject to collapse Place: Boston Hill, Silver City, NM 7. Create concrete sculptures that provide views in like the land artist Donald Judd 8. (The Bedroom) The area next to where the east entry could be placed (under the bridge) Attending: Dekker/Perich/Sabatini, AML, Dr. Altenbach, One Community you could provide cable netting to support the debris under the collar, but still allow Member people to enter in to a certain spot. We would need to evaluate where to stop the entry By: Lana Idriss iii. Solutions 1. Tire plug with bat compatible enclosure to the south Copies To: Parties Present 2. Grade for observation platform Issue Date: b. Stop 2 ( North Mine Entry and Side Entries into Raceway) i. Existing Conditions Discussion Items: 1. On BLM property 1. Project Orientation/Design Overview 2. Spalling/Cracking of ceiling a. What is AML? AML is a federally funded state program, formed through the passage of the Surface Mining Control 3. Loose rock along the collar and Reclamation Act.(SMCRA) 4. Clear off debris at top of overhang on bridge b. AMLs priorities are to protect the public health, safety and property from immediate hazards resulting from historic ii. Discussion mine practices; protect the public from hazards that do not constitute immediate hazards; restore lands and water 1. Some of the openings could be tire plugged degraded by historic mining practices, restoration of hard rock mines such as Boston Hill must facilitate the higher 2. Drill into the supports and cave it in priority reclamation. 3. Could plug with a stone wall c. Uniqueness of Boston Hill, proximity to Silver City, Hard Rock Mining, Wildlife Habitat. 4. If you saved the view in, you would need to close the side views, and maintain a view d. Boston Hill has multiple landowners and diverse stakeholder interest light to a light shaft shining through e. Values to keep in Mind- The abandoned mine features are manmade and are now naturalized, transition and 5. Create a bulkhead or wall and construct a view port through it with bars apparent risk into the “experience of risk” without sacrificing the feeling of exploring the mines Designs may 6. Create a steel mesh or backing with shotcrete to stabilize entrance balance, safety and curiosity. iii. Solution f. Opportunities- What can we do? Maintain natural look, keep natural and rough with rock work and native stone, and 1. Tireplug some of the openings, but leave one that allows the light to shine in for views. minimize engineered features. Provide signage of potential hazards, safety and history at trailheads. 2. Create a rock bulckhead wall with a rectangular steel frame opening with bars. g. Goals of the Community Field Design Meeting: Stakeholders and landowners collaboratively design the 3. Net it and only keep a shaft of light to the left safeguarding features that may be constructed on Boston Hill. The form is derived from participants and users, 4. Glue rocks with polyurethane (inject post and anchor) creating a space that is of the site. The AML program recognizes that Boston hill is a community resource and that 5. View window could support keystone arch there are diverse opinions regarding the appropriate safeguarding measures that respect landowner prerogatives and 6. Build solid steel bars with structural tubing and concrete to provide a view in reflect community sentiment. c. Stop 3 (Coliseum) 2. Dr. Altenbach Presentation i. Conditions a. Bats only have 1 baby per year 1. On private property b. Bats are most vulnerable when they are in hibernation, if they are disturbed more than two times while they are in 2. Steep significant pit hibernation they will not have enough energy to survive through the spring. 3. High walls with loose rock c. Bats natural habitat has been disturbed by recreational cavers and therefore they rely on places like mines to 4. Pit could be 40’ deep hibernate and breed in. ii. Discussion d. Whispers can be extremely disruptive to bats because of their hearing 1. Create a series of steel steps into the coliseum, close off workings below e. Never shine a light on a bat when it is in hibernation 2. Suspension bridge, over chasm f. Boston Hill has shown evidence that it once inhabited more bat habitat because of the old bat guano found on the 3. Cover the whole thing with cable netting to prevent people from sliding off the edge mine floors. If you were to close up the interiors of the mine from human disturbance you would see an increase in 4. Build a stable foundation for a bridge and provide cable netting underneath it bat population almost immediately. 5. Close off the openings at the bottom and allow a catwalk down in there. ( note loose rock g. The first fossils that we have of bats are still very similar to the bats we have today around the collar makes this dangerous and difficult to do) h. Bats take flying insects at night with sound 6. Create a low wall around the area i. One of the major bats found here at Boston Hill can hear sounds at Echolocation at 200,000 cycles per second 7. Could we have a bridge without netting? j. Firecrackers and torches to see in caves can kill or severely damage the bats ears 8. Mitigate people not the hazard by creating a wall with walkways viewing into the k. Bats have thumbs and fingers to grab and hang on to the tops of caves. coliseum 3. Site Visit (team) to the Legal Tender complex 9. Improved trail system creates a barrier- in this option you would not net the feature a. Stop 1 (East Mine Entry) 10. Generations that are growing up need to be integrated into the site safeguarding process i. Existing Conditions 11. Take away mesh fencing and run metal wire through the existing poles, 1. On BLM property hikers would enter into site through a v like shape, similar to forest service 2. Loose Rock at Entrance, Falling Debris and loose rock around collar fence access trails 3. Cracking columns 12. Build walls low (24” ht.) out of the existing stone; cavers will tie off on any 4. Spalling of mine ceiling railings or fencing to descend into the coliseum. 5. Graffiti 13. Create a multi-phased project, but start here in the private portion of the 6. Trash and spent fireworks site first. However, since the machinery would already be out here we 7. As little as 6’depth loose rock ceiling ii. Discussion L:\12-0089.001 Boston Hill\Task II- Plan\Community Field Design Meeting 1\Meeting Notes\MM-2013-08-08.doc L:\12-0089.001 Boston Hill\Task II- Plan\Community Field Design Meeting 1\Meeting Notes\MM-2013-08-08.doc
216 217 Safeguarding Abandoned Mines on Boston Hill | Silver City, NM Safeguarding Abandoned Mines on Boston Hill | Silver City, NM
h. Stop 8 (Represents the Ceiling subject to Collapse) Meeting Minutes
would also safeguard some of the other highly dangerous shafts along the trail edge that are easily accessed 14. In the first phase you could do a variety of solutions and test them out to see what works best and what does not for the future phases 15. Gathering areas were identified iii. Solution 1. Build a low wall surrounding the coliseum with an associated trail 2. Build a stable foundation for a bridge and provide cable netting underneath it. Bridge without netting was considered d. Stop 4 ( South of the Coliseum) i. Conditions 1. On private property 2. Deep trenches 3. Lots of loose rugged rock along the edges 4. Ceiling collapses create deep shafts ii. Discussion 1. Net and take down the big stones 2. Clear all of the Tree of Heaven and plant native trees 3. Anchor nets further back 4. Provide informational signage to give people an understanding of the sites history (could include historical photographs) iii. Solution 1. Cover this area with cable netting 2. Netting may have vertical fencing to discourage bikes e. Stop 5 ( black hole) i. Conditions 1. On private property 2. Deep narrow pit (extremely dangerous) 3. Existing metal pole driven into stone at side of the hole 4. Loose rock surrounding the collar ii. Discussion 1. Tire Plugs 2. Bat Habitat 3. Caving iii. Solution 1. Tire Plug f. Stop 6 ( Above ground of the fire pit room) i. Existing Conditions 1. On BLM property 2. Deep trenches 3. Large Spires 4. Loose rock around edges ii. Discussion 1. Net the entire area 2. Knock down rock spires in middle and collar to mitigate maintenance iii. Solution 1. Net the entire area g. Stop 7 ( Long Trench) i. Conditions 1. On BLM property 2. Narrow trench 10-15’ deep 3. Jagged stone edges 4. Collapsing edges 5. Great geology at collars ii. Discussion 1. Create bridges over the crevasse with netting covering the trench 2. Put a gate through part of it and allow access into this area up to a certain point iii. Solution 1. Create bridges and cover trenches with metal mesh L:\12-0089.001 Boston Hill\Task II- Plan\Community Field Design Meeting 1\Meeting Notes\MM-2013-08-08.doc i. Conditions 1. BLM and privately owned land Project No.: 12-0089.001 2. Thin ceiling over underground mine works could collapse under weight Project: Safeguarding Boston Hill th ii. Discussion Date: Friday, August 9 , 2013 1. Low wall with warning signage Place: Boston Hill, Silver City, NM iii. Solution 1. Low wall with warning signage Attending: Dekker/Perich/Sabatini, AML, One Community By: Lana Idriss i. Stop 9 ( Not shown on Stop Indicator Map because outside of legal tender) Copies To: Parties Present i. Existing Conditions Issue Date: 1. On private property 2. Breached fence Discussion Items: 3. 25-35’ Deep Pit 1. Stop #1- Eastern-most fenced area 4. Large Trees of Heaven growing in the bottom a. Condition 5. Flat viewing platform at the edge i. Features consisted of significant pits associated with a trench. High walls and rock fall potential 6. Loose rock around collar were present. It may be that these features are connected up to the Legal Tender, but at present ii. Discussion this is unknown. Pit may be 35 feet deep. Scott Altenbach is going to give the AML more 1. Provide a viewing platform information about the extent and possibility of bat habitat in the workings. 2. Take mesh off the fence and run a wire cable through it to make it look nicer b. Discussion 3. This shaft could become a part of phase 2 because it is off the main path i. Frequent public access was observed in and around the pits. 4. Phase 2 may not take place until the town and property owners get together for the town c. Closure Concepts to own the private parcels in Legal Tender 1. Tire or polyfoam plug with a culvert and bat compatible enclosure for the pits. 2. Keep the connected tunnels open to exploration and construct a rock bulkhead at the end. 3. If the features are safeguarded the fencing can come down 2. Stop #2 Centrally Fenced Area a. Condition This report is assumed to be a true and accurate account of this communication unless notice to the contrary is i. Features consist of three pits. Bat habitat is unknown as is their association with underground received within 10 calendar days of issue. workings of the Legal Tender. Stone collars look competent. Pits may be 35 feet deep. Eastern most pit has an adit of unknown horizontal distance. b. Closure Concepts End of Minutes i. Two pits can be plugged with either polyfoam or tire plugs ii. The eastern-most pit is a nice feature. A GCS wall can be built on the sloped side of the feature and a net installed. Keeping bikes from rolling over the netted feature was discussed at length. An idea of placing large several large boulders upslope of the feature would slow the bikes down and decrease the traffic over the netting. 3. Stop #3 Coliseum a. Design discussions and staking of entry features b. Trail realignments and gathering areas
This report is assumed to be a true and accurate account of this communication unless notice to the contrary is received within 10 calendar days of issue.
End of Minutes
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218 219 Safeguarding Abandoned Mines on Boston Hill | Silver City, NM Safeguarding Abandoned Mines on Boston Hill | Silver City, NM
Meeting Minutes
Project No.: 12-0089.001 Project: Safeguarding Boston Hill Date: Saturday, August 10th, 2013 Place: Boston Hill, Silver City, NM
Attending: Dekker/Perich/Sabatini, AML, Two Community Members By: Lana Idriss
Copies To: Parties Present MINE ENTRY Issue Date:
Discussion Items: THE COLISEUM Thursday 8th of August Site Visit Stops Friday 9th of August Site Visit Stops 10th of August Site Visit Stops Saturday
1. Morning Orientation 3 THE BALLROOM a. Ken Romig presented the current status of the project to several community members at the meeting. LEGEND b. Presentation Outline: 2 i. Abandoned Mine Land Program (AML)—Its enacting legislation, purpose and mission 4 3 2 ii. AML’s safeguarding process in complex sites such as Boston Hill iii. AML’s history on Boston Hill iv. Boston Hill’s unique traits and qualities v. Boston Hill’s planning and design team vi. Current status of the project
vii. Assessment and Public Meetings outcomes Off Map to the East 1 2
viii. Field Design Meetings 1 1
ix. Purpose 8 x. Site Visits and current status of safeguarding solutions xi. Follow Up
xii. Next meeting and future opportunities for community input 4 2. 3. Morning Site Visit 5
a. Stop #1 Mine Entry Near Fire Pit MINE ENTRY i. Discussion 7 1. Close off one portion of the entry with tire plugs, and create an amphitheater/bat viewing area to the south of the Entry. The amphitheater could incorporate the existing large boulders. (Community requested to do as little disturbance as possible and to keep
natural) 6 2. A overhang view platform inside a portion of the cave was considered during this visit ( just north of the entry) Discussion of allowing the public into this viewing area was considered. If this approach was taken we would need to stabilize and support the platform from underneath with either a tire plug or waste rock support b. Stop # 2 Coliseum i. Discussion ii. The coliseum is on private property. A low wall with a trail system, and some viewing platforms around the coliseum may be the best solution. Warning signage would be placed around this area. c. Results- Wrap Up Meeting THE FIRE PIT ROOM i. Several community members attended this meeting and were interested in incorporating a children’s art and science program into Boston Hill. They have several murals around town and were interested in working on educational signage about the mines, geology, and vegetation that exists on the site. ii. Another community member, Wendy Phillips, owns a property near the trail head of Boston Hill and was interested in displaying boards from the project on her property. She is very interested in having educational infrastructure on the mountain for tours, students, and families.
L:\12-0089.001 Boston Hill\Task II- Plan\Community Field Design Meeting 1\Meeting Notes\MM-2013-08-10.doc
220 221 Safeguarding Abandoned Mines on Boston Hill | Silver City, NM Safeguarding Abandoned Mines on Boston Hill | Silver City, NM
Appendix D: Field Meeting #2 8/26/2013 11:37 AM E-mail [email protected] [email protected] [email protected] [email protected] [email protected] [email protected] [email protected] [email protected] [email protected] [email protected] [email protected] [email protected] [email protected] [email protected] [email protected] Fax " 538-8983 313-3584 519-0548 313-3750 534-6374 590-5905 534-9355 534-0879 Telephone (858) 442-5866 (207) 319-4808 (303) 579-6033 1 Self Self Self Grip Grip Artist TOSL Structural Representing MRTC Murals MRTC Citizen/Resident Silver Architects SWNM Audubon SWNM Gila Resources Inf. ProgramGila Resources (575) 538-8078 Syzygy Tile - Arts & Cultural District Tile - Arts & Cultural Syzygy 590-0314 12-0089 Safeguarding Boston Hill AML Field Design Meeting Community August 8 - 10, 2013 Name Zoe Wolfe Zoe Jim Coates Nick Seibel Nancy Cliff Peter Lewis Lee Gruber Lee Craig Freas David Shiah Allyson Sink S.N. Flanders Jerry Boswell Teri Matelson Patricia Taber Patricia Wendy Phillips Frank Drysdale Andrew Lindlof Herbie Mansder Herbie Marty Eberhardt Steven Shelendich Robert Southworth Diana Ingalls Leyba Meeting Attendance Record 8-10 Attendance Record Meeting Attendance Record Project No.: Project: Owner: Meeting Purpose: Meeting Date and Time:
222 223 Safeguarding Abandoned Mines on Boston Hill | Silver City, NM Safeguarding Abandoned Mines on Boston Hill | Silver City, NM t e e F 0 8 ' 0 4
0 PRELIMINARY AGENDA =
4 " 1
:
Project No.: 12-0089 E L
Project: Field Design Meeting #2 A C S
Plan and Design for Safeguarding Abandoned Mines on Boston Hill 0 Venue Silco Theatre
Date: 9/6/13 ¯ ) A L
Note: The purpose of the Field Design Meeting is to discuss and design safeguarding measures on Boston Hill with V
stakeholders and significant discussions will happen on Boston Hill. The Silco Theatre venue is only a gathering and R E
presentation space. Planning team member, Ken Romig, can be reached at (505) 259-4516 for residents to coordinate a place T N D I
to meet up and discuss the project. This agenda is subject to change. ' E S 0 A N N L I ( 2
Saturday, October 5 E Y L T L E S A N V I I
8:30-8:45 Introductions P O L
R _ R P E r e
U N u I G 8:45 - 9:30 Project Status and Field Design Orientation t O 3 a L N T I e 1 E L L N F 0 C
I S T U D 2
10:00 - 11:30 Teams Plan/Design on site e
n O E N r N i H F L C E X I
e E
11:30 - 1:00 Lunch b } G N o t } E c O L 1:00 - 3:30 Teams Plan/ Design on site } O T
4:00 - 5:00 Regroup and discussion S }
}} O
} } } } }
} } } } }
} } } B
}
}
}
} Sunday, October 6 }
} N 2
1
} }
}
}
} O
}
} } } }
} }
} } } } } } } } } } } } } AM No meeting }
} S
1:00 - 4:00 Teams Plan/Design on site E N 4:00 - 5:00 Regroup and discussion I M
D Monday, October 7 E
9:00- 11:30 Teams Plan/Design on site N O
11:30 - 1:00 Lunch D N
1:00- 3:00 Teams Plan/Design on site A B
5:30-7:00 Public Presentation by Dr. Altenbach, Bat Specialist A
n g i Tuesday, October 8 G s N e I D
9:00- 11:30 Teams Plan/Design on site D d n R a
PM No meeting A g n i 6:00 Team Presentation to Silver City Town Council U p p G a E M
END OF AGENDA F d l A e i S F
L:\12-0089.001 Boston Hill\Task II- Plan\Community Field Design Meeting 2\A-2013-06-09 team.doc
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226 227 Safeguarding Abandoned Mines on Boston Hill | Silver City, NM Safeguarding Abandoned Mines on Boston Hill | Silver City, NM
-
anager M
STAFF
AML John John Kretzmann, PE, AML Program James Smith, P.E., Project Manager James Smith, P.E., NM ABANDONED MINE LAND PROGRAM TOWN OF SILVER CITY PRESENTATION CITY OF SILVER TOWN Abandoned of for Safeguarding the and Design Plan Mexico New City, Silver in Hill Boston on Mines Council Update Town 10/8/13
Land (AML) Program
Mine
funded state program, formed through the passage of the Surface Mining Control Control theMining of the passage Surface through formed program, funded state Who is AML? - Act (SMCRA). (SMCRA). Act
is a federally AML AML funding sunsets program in 2021. and Reclamation and Reclamation AML works on abandoned hard mined withina state. coal on existing tax a AML isthrough funded rock mines (i.e. Boston Hill) when obvious hazards are apparent. AML has worked on in HillBoston AML has worked apparent. are when mines Hill) Boston (i.e.rock obvious hazards the past. The New Mexico AML Program, part of the New Mexico Energy, Minerals, and Natural and Natural Minerals, Energy, part of the New Mexico AML Program, The New Mexico the of abandonedthroughout mines the reclamation addresses Department, Resources onproperty. both public and private state o o o The New Mexico Abandoned
228 229 Safeguarding Abandoned Mines on Boston Hill | Silver City, NM Safeguarding Abandoned Mines on Boston Hill | Silver City, NM
practices.
historic mining historic
facilitate the facilitate higher priority reclamation.
90% complete 90% 8, 2013 - - health, safety and property and property from safety health,
10, 2013
- public from hazards publicthat from hazards do not constitute
resulting from from resulting lands and water degraded miningby historic landsdegraded and water
April 23, 2013 7 August 5 September hazards. Restoration must must Restoration AML Priorities AML Public Meeting • Field Design Meetings • •
: Protect the : Protect 2 Construction Administration Phase Construction Administration Design Phase Assessment Phase Assessment Plan Phase Plan Current Project Status • • • • immediate immediate Priority Restore 3: practices. Priority 1: Protect publicPriority 1: Protect hazards immediate Priority
• The AML program funding priorities: The AML program • •
230 231 Safeguarding Abandoned Mines on Boston Hill | Silver City, NM Safeguarding Abandoned Mines on Boston Hill | Silver City, NM
Mine Hazards Map
Land Ownership Map
232 233 Safeguarding Abandoned Mines on Boston Hill | Silver City, NM Safeguarding Abandoned Mines on Boston Hill | Silver City, NM
Environmental Resources Legal Tender Mine Complex Legal Tender
234 235 Safeguarding Abandoned Mines on Boston Hill | Silver City, NM Safeguarding Abandoned Mines on Boston Hill | Silver City, NM
measures.
AML program recognizes that Boston Hill is a community resource and that there are diverse diverse are there that and resource is a community HillBoston that recognizes AML program Recreation Resources Stakeholder Concerns Protect the environment. Protect the enjoyment of isOpen diminishingtheHilldevelopment Boston Space. trail Indiscriminate Both Both public and landowners private safeguarding want The landowner respect prerogatives that measures safeguarding the appropriate opinions regarding andcommunity reflect sentiment.
Residents feel more comfortable on Boston more Hillcomfortable feel the Residents more they visit. • • • • •
236 237 Safeguarding Abandoned Mines on Boston Hill | Silver City, NM Safeguarding Abandoned Mines on Boston Hill | Silver City, NM
Field Design Meeting #1 Possibilities and Opportunities
238 239 Safeguarding Abandoned Mines on Boston Hill | Silver City, NM Safeguarding Abandoned Mines on Boston Hill | Silver City, NM
Hill
Hill
taking behaviors. taking -
taking taking when visiting Boston - loved rugged landscape character of Boston character rugged landscape loved -
improvements shouldallthe risk consider improvements place approach must be struck between type of safeguarding improvement and respecting respecting and improvement typeof safeguarding between be struck must approach a visitors sense of risk a visitors balanced Possibilities and Opportunities Preserve and the protect plant native and animal habitats Safeguarding Preserve Preserve the sense the sense of Preserve the much Preserve A Goals for Safeguarding Measures • • • • •
240 241 Safeguarding Abandoned Mines on Boston Hill | Silver City, NM Safeguarding Abandoned Mines on Boston Hill | Silver City, NM
. on Boston Hill on Boston all the trails
After
Mine Entry
Management Challenges
Volunteer groups have managed to construct and maintain many trails, however, volunteers cannot cannot volunteers however, trails, many maintain and construct to managed have groups Volunteer Boston Hill needs a more permanent solution to maintenance, management, and operations operations and management, needs solution Hilla more permanent Boston to maintenance, concerns address all the pressing issues nor maintain issues nor maintain the pressing all address Open Spaces require civic and community resources including maintenance and operation budgets. and operation including resources community maintenance and civicOpen Spaces require • • • Before
242 243 Safeguarding Abandoned Mines on Boston Hill | Silver City, NM Safeguarding Abandoned Mines on Boston Hill | Silver City, NM
After
After Amphitheatre Area Amphitheatre Mine Entry
Before Before
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Design
-
After
Phase 3 Phase
Construction Assistance
- Long Trench
4 D model the design the modelD - Coordinate design with experts in biology, in biology, withdesign experts Coordinate Bid Prepare designs, elevations and and sections designs,elevations Prepare estimates Cost 3 Share design withdesign stakeholders Share
engineers, archaeological resources archaeological engineers,
o Develop Documents Construction o o o o o completion Monitor construction Monitor construction substantial at Review Phase Develop Schematic Design Schematic Develop
• • • Before
246 247 Safeguarding Abandoned Mines on Boston Hill | Silver City, NM Safeguarding Abandoned Mines on Boston Hill | Silver City, NM
Fall Hazard, Egress Easy walk(Easy out) Fall Hazard, No Egress (Requires Rescue)
Shaft Risk Categories
Questions Thank you Thank No Fall Hazard Analysis Fall Hazard, Egress Difficult climb (Difficult out) Geologic Hazard Geologic
- Station #1 Station
248 249 Safeguarding Abandoned Mines on Boston Hill | Silver City, NM Safeguarding Abandoned Mines on Boston Hill | Silver City, NM
Pit Risks Pit Risks
Analysis Analysis
Slopes
Geologic Hazard Geologic Hazard Geologic
- - Oversteepened Beds Dipping Eroded Weak Rock Eroded Weak Potential fall distance over feet 50 over Potential fall distance Rocks at crest may Rocks at crest may often be loose undercut and in many many locations in Rock Falls Rock Falls Near Paths from (Risk Below):and Above • • • • High Walls (Fall Risk) (Fall Walls High • Station #1 Station Station #1 Station
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Safeguards in Place Hazards -
Legal Tender Complex Geo Legal Tender
Geologic Geologic Hazard Analysis -
Warning Signs Warning Cable Netting Fences - • Safeguards in Safeguards Place: • • Station #2 Station #1 Station
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30
31
Geologic Hazard Geologic Hazard Characterization
– The Coliseum Geologic Hazard Geologic Hazard Characterization
–
Trail to Spring Street Spring to Trail Legal Tender Mine Tender Legal
– Legal Tender Mine Tender Legal Legal Tender Mine Tender Legal The Raceway
Hazard Category Mine Mine Entrances The Fire Pit Room The The Ballroom Qualitative Risk Assessment Kleinfelder Study Areas Areas Study Kleinfelder Potential rock fall Potential
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32 33
Geologic Hazard Geologic Hazard Characterization Geologic Hazard Characterization
– –
Legal Tender Mine Tender Legal Mine Tender Legal Hazard Category Hazard Category
Qualitative Risk Assessment Qualitative Risk Assessment Falling Falling from height Collapse of chamber/entrapment
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34
Increasing 35
Probability
Increasing Geologic Hazard Geologic Hazard Characterization
– Geologic Hazard Geologic Hazard Characterization
–
Legal Tender Mine Tender Legal Risk Ranking Value System Value Ranking Risk Legal Tender Mine Tender Legal Risk Matrix Severity
fatality. Hazard Category
occur occur not occur Description
What is risk? Event may or may or may may Event Event less likely to likely less Event Event highly likely to likely highly Event
2 1 3 Qualitative Risk Assessment Severity Probability Disorientation Trips/slips Air quality Probability
Critical debilitating injury or Injury Injury requiring minor first aid treatment. Injury requiring EMS or search and rescue response. Hospitalization or treatment. emergency Additional hazard categories:
Very Very Least Risk = (probability Risk = (probability X (severity of consequence) of occurrence) (3) (1) (2) ate Low Probable Probable Probable High Category Moder Probability Probability
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36
37
Risk Matrix Risk Risk Matrix Risk Geologic Hazard Geologic Hazard Characterization
– Geologic Hazard Geologic Hazard Characterization
– Low Low High High Risk Ranking Risk Ranking Classification Legal Tender Mine Tender Legal ) Legal Tender Mine Tender Legal 2 6 2 6 Ranking Ranking – The Ballroom Value severity Risk (probability X (probability The Fire Pit Room The Fire – 1 3 2 3 Risk Value Severity Severity 2 2 1 2 Risk Value Probability Probability Risk Matrix /
height Hazard Rock fall chamber Risk Matrix Potential Potential Trips/slips Collapse of entrapment Falling from
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38 39
Risk Matrix Risk Matrix Risk Low High High Geologic Hazard Geologic Hazard Characterization Geologic Hazard Characterization
Extreme – – Risk Ranking Classification Low Low High ) Extreme Risk Ranking Classification 9 4 3 6 Ranking Ranking Value Legal Tender Mine Tender Legal Mine Tender Legal severity ) Risk (probability X (probability 6 3 3 9 – The Raceway – The Coliseum Ranking Ranking Value severity 2 1 3 3 Risk Risk (probability X (probability Value Severity Severity 3 3 1 3 Risk Value Severity Severity 2 3 3 2 Risk Value Probability Probability 2 1 3 3 / Risk Value Probability Probability Risk Matrix Risk Matrix /
Rock fall Trips/slips entrapment height Hazard Rock fall chamber Potential Potential Trips/slips Collapse of Potential Hazard Potential entrapment Falling from Falling from height Collapse of chamber
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Meeting Minutes 40 Project No.: 12-0089.002
Project: Safeguarding Boston Hill Date: Saturday, October 5, 2013 Place: Boston Hill, Silver City, NM
Attending: Dekker/Perich/Sabatini, AML, Golder, Silver City citizens. By: Noah Shumate, Ken Romig
Copies To: Project Team Issue Date: 11/15/2013 Risk Matrix Risk Discussion Items: 1. Team Orientation a. Saturday’s meeting began with orientation for any interested citizens who wished to join the site visits scheduled from October 5-8. Orientation consisted of a brief slide presentation lead by Ken Romig to introduce the team, discuss the Boston Hill Site, the need for safeguarding the abandoned mine areas, and options for safeguarding.
Geologic Hazard Geologic Hazard Characterization b. Orientation questions/discussion items: Ranking
Low
– i. The no-action option was also presented, meaning that if citizen input determined that no
Extreme safeguarding measures were wanted, the Abandoned Mine Lands (AML) would not pursue any measures at the sites. Risk Classification ii. Citizen question: Can the Town do this work without public input/support? iii. Answer: Yes, but the focus has been public outreach throughout the project. The Legal Tender mine site is top priority. Also, the Town doesn’t want to take ownership/maintenance of the land unless safeguarding measures are planned and/or in place. ) iv. Citizen comment: Whatever design is done, address all concerns of landowners, the Town, and citizens. Legal Tender Mine Tender Legal
9 3 v. Design/construction timing: there will be a pause between design and construction. There will be
Ranking a need for a NEPA environmental assessment if funded federally. Value vi. Citizen question: what funding is being provided for this project? severity vii. Answer: the AML, which has funding flexibility considering the project conditions. Surface Hazards Risk (probability X (probability viii. Citizen comment: look into grant opportunities such as those provided by Freeport McMoran. 1. This had been looked into earlier, and FM does not want to be involved at this time due
– to liability concerns. ix. Citizen comment: consider the potential for “too much funding,” especially if these sites are not used often. 3 1 x. Team comment: we want to get more people involved and discuss the value of safeguarding Risk
Value measures. Some citizens may resent the measures, but we need continued outreach.
Severity Severity xi. Team comment: it may be possible to take advantage of researching grant opportunities during the environmental assessment phase between design and construction. c. The project team along with citizens in attendance then reconvened at the Spring Street trailhead of Boston Hill to visit the Legal Tender mine. 3 3 2. Site Visit Notes at Key Points – Legal Tender Risk
Value a. Saturday’s site visit followed the map points very closely. The only exception was a discussion of point number 11(the “Moongate” or “Hidden Garden”) alongside Number 1 (the “Amphitheater” and “Ballroom”).
Probability Probability b. Number 1: Number 1 will require some fill/closing of the underground workings entry as well as raising grade in key areas. At bat gate will be installed also. Ken Romig marked the points for the bat gate location with yellow spray paint. i. Area of rock column fracturing was also observed which will require reinforcement and possibly shot-crete coating. ii. Blue tape was used to mark the approximate location of raised grade for a “ballroom balcony.” Amphitheater seating would be placed to the north of the large Juniper Risk Matrix located in the area. The seating would be large boulders available in the area.
height These seats would allow citizens to come and view bat flight and dusk hours or Hazard Potential Potential
Trips/slips perhaps other events as staged by the Town. Falling from iii. The possibility of allowing human entry into the “ballroom” underground workings was discussed, but would depend on Owner approval and understanding of liability as well as allowing entry only when bats are not hibernating.
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iv. The possibility of cairns or rock sculptures was Meeting Minutes discussed, although there was some concern regarding vandalism of such structures and their potential to take away from the natural setting. Project No.: 12-0089.002 v. A “less is more” approach to design and infrastructure may be more favorable. Project: Safeguarding Boston Hill c. Number 11: A bat gate would be installed about 30’ into the entry to Number 11 at the second archway. The gate Date: Sunday, October 6, 2013 would angle up and to the top of the arch. This area currently allows dangerous entry into the underground workings Place: Boston Hill, Silver City, NM of the “ballroom” which also contains bat habitat. i. It was explained that a gate would allow passage of the bats in and out but also allow visitors to Attending: Dekker/Perich/Sabatini, AML, Golder, one Silver City citizen. look into the workings safely. Two stakes were left in place to signal the location of the gate, and By: Noah Shumate, Ken Romig a photo-real interpretation of the gate design (from previous presentation materials) was shared with the group. It was suggested that the gate be installed across the entire opening and have more Copies To: Project Team horizontal running bars for ease of bat flight in and out. Issue Date: 11/15/2013 ii. More discussion of this area was needed to determine how to safeguard from the opening above (wire net, gate, etc?). d. Number 2: Cable net covering would be installed. Discussion Items: i. The possibility of partial closure was discussed, as well as netting over area Number 4 as well. 1. Team Orientation ii. This area contains two entries to the underground workings: one 3’ entry to the south and a high a. Sunday’s meeting required no orientation since no new citizen members were present. entry to the north. e. Number 3: Cable net covering would be installed. 2. Site Visit Notes at Key Points – Legal Tender i. Steel gate/structure would be installed instead of rock bulkhead. a. Sunday’s site visit continued where Saturday left off. ii. Rockfall potential would be removed. b. Point Number 7 was divided into two points, ‘A’ and ‘B’. iii. A rock cairn concept could be used here. i. The competency of rock was questioned for suitability in anchoring cable netting at these iv. Connection to this area could be emphasized via trail alignments, deemphasizing the current trail locations. alignment along the existing chain link fence. c. Number 8: Named the ‘Rain Garden’. f. Number 12: Number 12 was introduced into the discussion to cover the category of perimeter fencing and walls that i. The addition of a perimeter wall was staked-out and captured with GIS points. will be required on site. Some overall options discussed were: 1. The wall will follow the edge of area 8 and also include a circular form to create a i. Cutting the existing fence posts to 4’ and installing new chain link mesh and/or wildlife fencing (if gathering space between areas 7 & 8 and area Number 6. wildlife fence is used, use cable strands not thin wire). 2. The use of GCS wall along the steeper edges of the slope of point 8 and surrounding area ii. Creating ‘anti-bike’ openings in fencing and strategic rock/wall placement to deter bicyclists in was also discussed. some dangerous areas. 3. The GCS and low seat wall solutions need to be integrated along the perimeter of area 7 iii. Other bike deterrents: flagging or rock yard/boulders in key areas, or providing a specific circuit & 8. for bikes outside the mine workings area. d. Number 9: This area was divided into two points, ‘A’ and ‘B’. iv. Using low rock walls instead of chain link or wire fences. i. Point A, north: leave open. Provides animal habitat and little threat to humans. v. The need to not “fence out” pedestrians. ii. Point B, south: a shaft is present. Grates to be installed at shaft and ledge. The grade of this shaft vi. Keeping the current fence since it deters vehicles/bikes, but gets breached. The barbed wire should should also be pulled back for gradual transition. be removed. e. Number 10: The competency of rock was questioned for anchorage of cable netting overall and two points (‘A’ and vii. Use different alignments of wall/fence depending on their function (edge of pit vs. perimeter of ‘B’) were also identified. underground workings, etc.). i. Rock walls and/or rock ‘yards’ could be used to deter bicycle traffic through this area. viii. Safety vs. an inviting feature (do fences/walls invite challenge for bicyclists?). ii. The fencing to the south of this area is viable – perhaps cut the posts to 4’ and install new chain ix. Approach the Town for artists to design and build unique fences/walls. link fabric. x. The need for any fencing at all (why have it?). iii. Trail to bridge (to Number 11 area) to be incorporated. 1. It prevents bicyclists from getting a fast run into mine areas or riding over cable nets. iv. Discussion of a perimeter trail around Number 10 was also discussed. 2. It is safer for hikers. v. Point B is a shaft to be ‘puff’ plugged (foam plugged) g. Number 6: Much discussion at this location. Tentatively named the “Coliseum”. Possible options include any vi. Point A is the connection to Number 5 – a wall alignment to be laid out in the field. number of the following, or a combination thereof: f. Number 11: The Long Trench. i. Cable net over all. i. Bridging the trench will connect to the Number 10 area. ii. Wall around perimeter. ii. Netting will run the length of the trench and stop at the ‘Bedroom’ located north of area Number iii. A cantilever overlook. 1. iv. Bat gates. iii. Low wall will run along the top of the trench and restrict access to the ‘Moongate’ from above. v. Wildlife fencing. These walls were captured in GIS. h. More discussion of Number 6 will be required. iv. The possibility of stairs from the Moongate up to the top of the trench was also discussed. This would help connect trail points internal to areas Number 1 through 11. g. Further discussion of Number 12, fencing. i. Is fencing a necessity for the entire area perimeter (Numbers 1 – 11)? ii. Partial boundary fencing may be useful, such as along the south and east edges. This report is assumed to be a true and accurate account of this communication unless notice to the h. Numbers 3, 5, and 6: trails and boundaries need to be discussed and investigated further. i. Matrix of options for area Number 6: contrary is received within 10 calendar days of issue. i. At the re-grouping session at the Silco Theater, Ken and Noah presented a matrix of ideas/options for area Number 6, the ‘Coliseum’, based on team discussions from End of Minutes the Oct. 7 site visit (see below for example).
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Meeting Minutes
Project No.: 12-0089.002 Project: Safeguarding Boston Hill Safeguarding Netting Overlook Bate Gates Wall/Fencing Signage Date: Monday, October 7, 2013 Measures Place: Boston Hill, Silver City, NM
Attending: Dekker/Perich/Sabatini, AML, Golder. Considerations By: Noah Shumate, Ken Romig
Safety Copies To: Project Team Issue Date: 11/15/2013
Discussion Items: Habitat 1. Team Orientation (bats, birds, etc.) a. Monday’s meeting required no orientation since no new citizen members were present.
2. Site Visit Notes at Key Points – Legal Tender Experience of a. Monday’s site visit was largely focused on staking wall locations per Sunday’s discussions. Place b. Number 11: Rock wall alignment from ‘Moongate’ to area Number 5 was staked and measured in GIS. c. Number 3 & 6: Rock wall alignment was staked and measured in GIS. i. Two features between these areas will be cable netted. Maintenance d. Number 5, areas between 3 & 1: i. Rock wall alignment was staked and measured in GIS. ii. Addition of signage at edge area Number 5 balcony. e. Numbers 6, 7, & 8: The blank cells of this matrix may be filled in with number ratings (i.e. 1 – 5, five being a high or ‘best’ rating) or with a i. Trail alignment to circular gathering area was staked and measured in GIS. bullet list of considerations. The utility of this matrix has yet to be determined, but was presented as a launch point f. Trail alignments (general): for further discussion working toward final decision making for safeguarding solutions around area Number 6. It i. Alignment from area Number 10 to Long Trench Bridge was staked and measured in GIS. could also be used and adjusted for other areas on site. The ‘considerations’ are based on key themes or points ii. Alignment from south to Bridge was staked and measured in GIS. identified as a result of public outreach as well as the AML’s concern for safety (safeguarding), which is of primary g. Fencing: importance. i. Measurements in GIS were made of the extent of existing fencing to be kept. ii. Existing fence posts will be kept but cut to 4’ height, and new chain link fabric will be installed. iii. The remainder of fence will be removed. h. The concept and utility of boulder/rock yards or rocky mounds was discussed. i. They may discourage bicycling through the safeguard areas, but may be too labor intensive to install/move from other areas of the site. This report is assumed to be a true and accurate account of this communication unless notice to the contrary is ii. Further discussion of this safeguarding measure is needed. received within 10 calendar days of issue. i. Lastly, the team outlined a trail alignment from area Number 3 (‘Ballroom’) to the potential overlook location at area Number 6. End of Minutes
This report is assumed to be a true and accurate account of this communication unless notice to the contrary is received within 10 calendar days of issue.
End of Minutes
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Meeting Minutes 6. Site Visit Notes at Key Points – the Shafts to the south of Boston Hill a. Shaft 01: 25’x46’, 98’ deep (17’ of water in bottom). Project No.: 12-0089.002 i. Wear and tear on existing cable netting. ii. Check for habitat, cover with finer cable mesh. Project: Safeguarding Boston Hill b. Shaft 02: 31’x30’ (measured for cable netting), 21’ deep. Date: Tuesday, October 8, 2013 Place: Boston Hill, Silver City, NM i. Cover with cable netting. c. Shaft 03: 8x10.5’, 7’ deep. Attending: Dekker/Perich/Sabatini, AML, Golder. i. Backfill 3’. By: Noah Shumate, Ken Romig d. Shaft 07: 31’x15’, (measured for cable netting) 24’ deep (2’ of water in bottom). i. Owl habitat is likely. Copies To: Project Team ii. Cover with cable netting. Issue Date: 11/15/2013 e. Shaft 04: 21’x16’ (measured for cable netting) 20’ deep i. Owl habitat is likely. ii. Cover with cable netting. Discussion Items: 1. Team Orientation 7. General notes: a. Tuesday’s meeting required no orientation since no new citizen members were present. a. Cable nets come in 10.5’ widths and overlap a minimum of 6”. Measurements for shaft openings to receive cable nets (above) have factored for these dimensions. 2. Site Visit Notes at Key Points – Legal Tender East a. Number 1: Cable netting should be provided over this area. b. Number 2: Total closure via foam and/or toroid method. c. Number 3: Wall and netting will be required. d. Fencing: total removal. This report is assumed to be a true and accurate account of this communication unless notice to the contrary is received within 10 calendar days of issue. 3. Site Visit Notes at Key Points – the ‘Basement’ a. Number 1: shaft End of Minutes i. Need confirmation if bat/owl habitat. ii. Number 1.A., north: total closure iii. Number 1.B., south: puff/foam with culvert. b. Number 2: the complex i. Number 2.A., vertical puff/foam enclosed. ii. Number 2.B., toroid enclosed. iii. Number 2.C., toroid enclosed. c. Number 3: shaft and tunnels i. The team observed bats inside the shaft area. ii. Install bat cupola and rock bulkhead at tunnel. d. Number 4: shaft i. Grated enclosure at seating height. e. Number 5: backfill subsiding adit located north, just outside the fenced area. f. Fencing: total removal.
4. Site Visit Notes at Key Points – ‘Cenote Seco’ a. Create an overlook with steel guardrails. b. Rock wall will be required around the entire feature. Location of a potential wall was staked and measured with GIS. c. Fencing: total removal.
5. Site Visit Notes at Key Points – the Shafts/tunnels off Cooper & Spring Street trailheads a. Shaft 15: 10’x21’ and 11’ deep. i. The shaft should be backfilled with 7’ of material. b. Shaft 09 i. Plug and backfill with granular fill. c. Shaft 10: 7’x13’, 13’ deep. i. Cut trees in shaft and fill. d. Shaft 11: 8’x13’, 10’ deep. i. Cut trees in shaft and fill. e. Shaft 12: 19’ deep. i. Needs to be cleaned out and checked for bat habitat before determining a solution. f. Tunnel A: i. Should be cable netted and bat compatible.
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272 273 Safeguarding Abandoned Mines on Boston Hill | Silver City, NM Safeguarding Abandoned Mines on Boston Hill | Silver City, NM
MARKET STREET TRAIILHEAD SPRIING STREET TRAIILHEAD Shaft 14 )" CHEYENNE STREET )" )" TRAIILHEAD Shaft 13 LEGAL TENDER // )" Shaft 05 GLOBE MIINE Shaft 15)" Potential Bat Habitat NORTH PIIT )"Shaft 12 KIING BOLT PIIT )" Tunnel A )" Potential Bat Habitat
Shaft 08)" )" Shaft 10 Shaft 11 )" NW Shaft RAVEN )")" PIIT )"Shaft 09 ADONIIS PIITS COOPER STREET COMMANCHE TRAIILHEAD PIIT LUCK MIILL
Shaft 07 )" Shaft 06 )" )"Shaft 04 )" Shaft 03 Potential )" Shaft 02 Potential Barn Own Habitat )")")")" Ban Own Habitat )" South Shafts South Shaft 01 - Adit Shafts
Copyright:© 2013 Esri, DeLorme, NAVTEQ, TomTom, Source: Esri, DigitalGlobe, GeoEye, i-cubed, USDA, USGS, AEX, Getmapping, Aerogrid, IGN, IGP, and the GIS User Community
0 300 600 900 1,200 LEGEND Feet SCALE: 1" = 300' Shafts_GAIFieldData STUDY AREA BOUNDARY Shafts_GAIFieldData ´ STEEP AREA SHAFTS BY FALL HAZARD AND EGRESS SURFACE DEPRESSION AREAS )" NO FALL HAZARD EXISTING BOSTON HILL TRAILS )" FALL HAZARD, EASY EGRESS POST-1977 MINING AREA )" FALL HAZARD, DIFFICULT EGRESS BOSTON HILL OPEN SPACE BOUNDARY )" FALL HAZARD, NO EGRESS EXISTING TRAILHEAD ACCESS BLM LAND
EXISTING PRIVATE LAND
W. NEW MEXICO UNIVERSITY LAND
GRANT COUNTY LAND Hazards Associated with Boston Hill Mines Open House Community Meeting, Silver City, New Mexico March 21, 2013
274 275 Safeguarding Abandoned Mines on Boston Hill | Silver City, NM Safeguarding Abandoned Mines on Boston Hill | Silver City, NM
276 277 Safeguarding Abandoned Mines on Boston Hill | Silver City, NM
278 Safeguarding Abandoned Mines on Boston Hill | Silver City, NM Appendix E: xx
279 Safeguarding Abandoned Mines on Boston Hill | Silver City, NM
Safeguarding Mines on Boston Hill. Silver City, NM Legal Tender Mine Complex Safeguarding Matrix‐ v1 Location Name Feature Type Nickname Latitude (NAD Longitude (NAD Height (ft) Width (ft) Shaft Coord Comments Ownership Evidence Public Entry Comments Signage Or Signage Or Fencing Comments Shaft Fall Shaft Egress Shaft/Collapse Habitat 83) 83) length? east/west Depth (ft) Public Entry Fencing Hazard Hazard North/south dimension? dimension? Preferred Safeguarding method
Shaft 01 shaft The net 32.75471 -108.28812 25 46 98 17'-0" of water in bottom Town of Silver City No No access except riding over the netYes Steel cable net over shaft opening. Cable is wearing No Not Applicable No Needs confirmation Cover with finer steel mesh
Shaft 01 shaft The net 32.75481 -108.28809 15 45 30 North end Town of Silver City No No access except riding over the netYes Steel cable net over shaft opening No Not Applicable No Cover with finer steel mesh Shaft 02 shaft 32.75537 -108.2871 31 30 21 Taken on ground surface on ledge above openin Town of Silver City No - No - Yes No No Steel mesh Shaft 03 shaft 32.7556 -108.28704 8 10.5 7 South end of Trench Town of Silver City No - No - Yes Difficult No Backfill to 3'-0" South Shafts adit 32.755 -108.29083 - - 0 A Town of Silver City Yes Dumping of bricks, greenwaste Yes 2 signs, one facing south, one NE "mine hazards" No Not Applicable No ? South Shafts adit 32.755 -108.29094 - - 0 B Town of Silver City Yes Dumping of bricks, greenwaste Yes 2 signs, one facing south, one NE "mine hazards" No Not Applicable No ? South Shafts adit 32.75499 -108.29102 - - 0 C Town of Silver City Yes Dumping of bricks, greenwaste Yes 2 signs, one facing south, one NE "mine hazards" No Not Applicable No ? Yes, some collapse at opening, but small into South Shafts - Adit adit 32.75504 -108.29125 - - 10 Adit Town of Silver City Yes Dumping of bricks, greenwaste Yes 2 signs, one facing south, one NE "mine hazards" No Not Applicable hard rock ? Shaft 06 shaft 32.75558 -108.29072 - 15 6 - Town of Silver City No - No - Yes Easy - N/A Shaft 07 shaft 32.75644 -108.29014 31 15 24 2'-0" water in bottom Town of Silver City No - Yes one post "mine hazards" Yes No - Owl Habitat is likely Cover with Cable netting Several small openings, assume one with barb wire fillin Shaft 08 shaft 32.76272 -108.28564 - - 0 and sign is Shaft 8 Town of Silver City No - Yes Sign adjacent (north) No Not Applicable - Yes, open adit with Shaft 09 shaft 32.76108 -108.28195 - 5 15 S end of trench Town of Silver City Yes Some bottles/cans in trench Yes One sign on east edge, not seen from road Yes Difficult collapsed soils Plug and Backfill with granular fill Area is covered in small pits and trenches, holes and fa hazards in entire area, 2 vertical shafts adjacent appear to Loose rocks at top, Shaft 10 shaft 32.76265 -108.28332 7 13 13 be the only shafts Town of Silver City No - No - Yes No vertical walls Cut trees in shaft and backfill Area is covered in small pits and trenches, holes and fa hazards in entire area, 2 vertical shafts adjacent appear to Loose rocks at top, Shaft 11 shaft 32.76255 -108.28335 8 13 10 be the only shafts Town of Silver City No - No - Yes No vertical walls Cut trees in shaft and backfill Shaft 12 shaft 32.76513 -108.28346 - - 20 - Town of Silver City No - Yes One sign at uphill edge of shaft Yes No - Needs Confirmation Clean out- no solution determined Pots and pans, bottles. Adjacent to Shaft 13 shaft 32.768 -108.28172 - - 0 - Town of Silver City Yes neighborhood No - No Not Applicable - None required Shaft 14 shaft 32.76824 -108.28225 - - 0 N end of trench at trai Town of Silver City Yes Footpath into trench No - Yes Easy - None Required Shaft 14 shaft 32.76812 -108.28227 - - 0 S end between hole and trench Town of Silver City Yes Footpath into trench No - Yes Easy - None Required Shaft 15 shaft 32.76646 -108.28465 10 21 15 Pink flag nearby likely from lidar surve Town of Silver City No - No - Yes No - Backfill with 7' of materia Timber and corrigated metal debris i Tunnel A tunnel 32.76365 -108.28246 - - 15 Northside Town of Silver City No hole No - Yes No - Netted with Bat compatible enclosure Timber and corrigated metal debris i Tunnel A tunnel 32.76376 -108.28242 - - 15 Southside Town of Silver City No hole No - Yes No - Netted with Bat compatible enclosure Shaft 09 shaft 32.76122 -108.28189 0 30 15 South end of deep opening Town of Silver City Yes Some bottles/cans in trench Yes One sign, not seen from road Yes Difficult No ? Yes, open adit with Shaft 09 adit 32.7615 -108.28175 0 20 10 at sign, shaft Town of Silver City Yes Some bottles/cans in trench Yes One sign on east edge, not seen from road Yes Difficult collapsed soils ? Shaft 09 shaft 32.76158 -108.28189 0 15 15 North end of trench Town of Silver City Yes Some bottles/cans in trench Yes One sign, not seen from road Yes Difficult No ? Shaft 04 shaft 32.7555 -108.28978 21 16 20 - Town of Silver City No - No - Yes No No Owl habitat likely Cable netting Shaft 05 shaft 32.7667 -108.29019 4 6 11 - Town of Silver City No - No Sign has fallen or been thrown into the shaft Yes No No filled with Barbed wire? NW Shaft shaft 32.761774 -108.299889 4 6 3 - Town of Silver City No - Yes - No Easy -?
Legal Tender Mine Complex Location Name Feature Type Nickname Latitude(NAD Longitude (NAD Height (ft) Width (ft) Shaft Coord Comments Ownership Evidence Public Entry Comments Signage Or Signage Or Fencing Comments Shaft Fall Shaft Egress Shaft/Collapse Habitat 83) 83) Depth (ft) Public Entry Fencing Hazard Hazard Preferred Safeguarding method Loose rocks at top, Adit 01 Adit/Tunnel The Ballroom 32.76733274 -108.2859681 0 BLM Yes Frequent Daily entry Yes Fencing is breached, signage is on fencing No Easy vertical walls Bat/Fox See discussion Shaft 02 Shaft 32.76761184 -108.2857458 BLM Yes Footpath to edge Yes Yes Easy Yes Bat/Fox Cable netting Tunnel 03 Mine Entry 32.76767439 -108.2856638 BLM Yes Frequent Daily entry Yes No Easy vertical walls Bat/Fox Bat gate Shaft 04 Shaft 32.76749531 -108.2856694 BLM Yes Footpath to edge Yes Yes Easy Yes Bat/Fox Cable netting Feature 05 Shallow ceilings 32.76733724 -108.2855537 Multiple BLM/Private Yes Frequent Daily entry Yes Yes n/a Yes Bat/Fox Low rock wall at perimeter- signage Shaft 6 Shaft Coliseum 32.76750999 -108.2851415 Private Yes Footpath to edge/possible entry Yes Yes Easy Loose rock at top Bat/Fox Cable netting Shaft 07 Shaft 32.76729862 -108.2851797 Private Yes footpath to edge Yes Yes Easy Loose rock Bat/Fox cable netting Shaft 08 Shaft Rain Garden 32.76729084 -108.2853861 Private Yes Frequent Daily entry Yes Yes Easy Loose Rock Bat/Fox Cable netting Shaft 09 Shaft 32.76707314 -108.2852063 Multiple BLM/Private Yes Frequent Daily entry Yes Yes Easy Loose Rock Bat/Fox Total Closure foam or toroid Shaft 10A Shaft 32.76694098 -108.2855357 BLM Yes Frequent Daily entry Yes Yes Easy Loose Rock Bat/Fox Cable netting Shaft 10B Shaft 32.76671419 -108.2855205 BLM Yes Frequent Daily entry Yes Yes Easy Loose Rock Bat/Fox Total Closure foam or toroid Shaft11 A Shaft Long Trench 32.76705856 -108.285922 BLM Yes Frequent Daily entry Yes Yes Easy Loose Rock Bat/Fox cable netting with bridge Feature11B n/a Moongate 32.76720902 -108.2859274 BLM Yes Frequent Daily entry Yes n/a Easy n/a Bat/Fox low rock wall on top of arch Feature 11C n/a The Bedroom 32.76709942 -108.2858997 BLM Yes Frequent Daily entry Yes n/a Easy n/a Bat/Fox Bat gate at second entry Legal Tender East Shaft 1 shaft 32.76730063 -108.2848577 Private Yes Frequent Daily entry Yes Fencing is breached, signage on fencing Difficult yes Needs verification Cable netting Shaft 2 shaft 32.76711566 -108.2849009 Private Yes Frequent Daily entry Yes Difficult yes Needs verification Total Closure foam or toroid Shaft 3 shaft 32.7671366 -108.2847515 Private Yes Frequent Daily entry Yes Difficult yes Needs verification GCS wall and netting and rock wall at edge The Basement Shaft 1 A north Shaft 32.76752869 -108.2842285 Private Yes Frequent Daily entry Yes Fencing is breached, signage on fencing Difficult yes Needs verification Total Closure Foam or toroid Shaft 1B south Shaft 32.76748099 -108.2842463 Private Yes Frequent Daily entry Yes Difficult Needs verification Foam with culvert Shaft 2 A Shaft 32.76741139 -108.2842674 Private Yes Frequent Daily entry Yes Difficult Needs verification Vertical wall- Foam, total closure Shaft 2B Shaft 32.76739625 -108.2842678 Private Yes Frequent Daily entry Yes Difficult Needs verification Toroid closure Shaft 2C Shaft 32.76737751 -108.2842687 Private Yes Frequent Daily entry Yes Difficult Needs verification Toroid closure Feature 03 A Shaft 32.76720157 -108.2842769 Private Yes Entry Yes Difficult Observed bats Bat cupola Feature 03 B Tunnel 32.76719203 -108.2842076 Private Yes Frequent Daily entry Yes n/a n/a Rock Bulkhead Shaft 04 Shaft 32.7670939 -108.284306 Private Yes Footpath to edge Yes Difficult Observed bats Grated enclosure/cupola at seating heigh Subsidence 05 subsidence 32.76768408 -108.2842447 Private Yes n/a no no n/a ? n/a Backfill Cenote Seco Feature 1 Shaft 32.76886749 -108.2844575 Private Yes Footpath to edge Yes Fencing is breached, signage on fencing yes Difficult yes Need verification remove existing fence Feature 2 Shaft 32.76868569 -108.2844498 Private Yes Footpath to edge Yes Fencing is breached, signage on fencing yes Difficult yes Need verification Cable netting
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