Removal Action Report US Forest Service, Blue River Administration Site Blue River, Oregon

Prepared for: US Forest Service, Willamette National Forest McKenzie River Ranger District

Report Date: August 2012 PBS Project No. 76127.000, Phase 0004

Removal Action Report US Forest Service, Blue River Administration Site Blue River, Oregon

TABLE OF CONTENTS

1.0 INTRODUCTION ...... 1 2.0 SITE LOCATION AND SETTING ...... 1 2.1 Location ...... 1 2.2 Physiographic Setting...... 1 3.0 PREVIOUS SITE STUDIES ...... 2 3.1 Assessment and Evaluation of Remedial Options ...... 2 3.2 Waste Determination ...... 2 4.0 REMOVAL ACTION OBJECTIVES AND APPROACH ...... 2 5.0 SAFETY ...... 3 6.0 SUMMARY OF FIELD ACTIVITIES...... 4 6.1 Monitoring Well Abandonment – May 2012 ...... 4 6.2 Soil Excavation – May 2012 ...... 4 6.3 Soil Excavation – June 2012 ...... 5 6.4 Used Oil Area Soil Confirmation Sampling – May and June 2012 ...... 5 6.5 Soil Backfill – July 2012 ...... 6 7.0 USED OIL AREA SOIL CONFIRMATION SAMPLE FINDINGS ...... 6 7.1 Initial Sampling Results – May ...... 6 7.2 Final Sampling Results – June...... 6 7.3 Evaluation of Results ...... 7 8.0 SUMMARY AND CONCLUSION ...... 7 10.0 LIMITATIONS ...... 8 11.0 SIGNATURES ...... 8 12.0 REFERENCES ...... 9

SUPPORTING DATA

TAB 1 FIGURES Figure 1 – Vicinity Map Figure 2 – Site Map Figure 3 – Wood Post Excavation Area Detail Figure 4 – Used Oil Excavation Table of Area Detail

TAB 2 TABLES Table 1 – Solid Waste Disposal Summary Table 2 – Summary of Soil Analysis

APPENDICES Appendix A – Site Photographs Appendix B – Monitoring Well Abandonment Logs Appendix C – Solid Waste Disposal Receipts Appendix D – Laboratory Reports – Used Oil Area

August 2012 Project No. 76127.000, Phase 0004 i Removal Action Report US Forest Service, Blue River Administration Site Blue River, Oregon

1.0 INTRODUCTION PBS Engineering and Environmental Inc. (PBS) performed a Removal Action (RA) at the Blue River Administration Site near the community of Blue River (Figure 1). The RA included the removal and appropriate management of impacted media at the former Wood Post and the Used Oil Areas. In addition, on-site monitoring wells were decommissioned as part of the RA. The procedures of the RA are specified in the Removal Action Work Plan (Work Plan). The Work Plan is intended to be used in conjunction with the Sampling and Analysis Plan (SAP) and the Site Health and Safety Plan (HASP).

This report describes the RA procedures and findings used to complete the RA. This includes the removal of soils in the Wood Post Area containing pentachlorophenol (PCP) and dioxins and furans, and removal of soils in the Used Oil Area containing used oil-derived petroleum contaminated soil (PCS) near the southwest corner of the Upper Blue River Warehouse building. The Used Oil Area is located about 500 feet to the east-southeast of the Wood Post Area on FS Road 2620-130 (Figure 2).

The RA utilized the RA Work Plan (PBS, April 2012) to achieve the cleanup objectives and goals as indicated in Abbreviated Engineering Evaluation/Cost Analysis: Blue River Wood Post Site, Willamette National Forest, Oregon, August 2005, and Final Report: Engineering Evaluation/Cost Analysis Addendum, Blue River Wood Post Site, Willamette National Forest, August 15, 2006 (Cascade Earth Sciences, 2006), and the Addendum to the Abbreviated Engineering Evaluation/Cost Analysis, Blue River Wood Post Site, Willamette National Forest, September 8, 2011 (BB&A Environmental, Inc.).

2.0 SITE LOCATION AND SETTING

2.1 Location The Site is located within the southwest ¼ of Section 21, Township 16 South, Range 4, East of the Willamette Meridian, approximately 40 miles east of Springfield, near the community of Blue River, Oregon (Figure 1). The Site is situated on Forest Service Road (FR) 2620-130 at mile post 0.2. Vacant USFS housing is located southwest of the Site across FR 2620-130.

2.2 Physiographic Setting The Site is in the western physiographic province of the Cascade Mountain Range in the Willamette National Forest (WNF) at an approximate elevation of 1100 feet above mean sea level (MSL). The area terrain consists of valleys, ridges, and mountains. The Site is situated on a south-facing slope above a valley formed by the McKenzie River. The general topography of the area slopes to the south at an approximate average 12 percent slope. However, both the Wood Post Area and the Used Oil Areas are relatively flat.

The Site is bordered by FR 2620-130 on the north; undeveloped land and a USFS warehouse facility to the east; undeveloped land to the south; and undeveloped land and FR 2620-130 to the west (Figure 2). The former post treatment area is located in a clearing that gently slopes to the south and is surrounded by large old growth firs and hemlocks. The ground is vegetated with ground cover plants and shrubs. The clearing measures roughly 70 feet north-south and 70 feet east-west, encompassing approximately 4,900 square feet.

August 2012 Project No. 76127.000, Phase 0004 1 Removal Action Report US Forest Service, Blue River Administration Site Blue River, Oregon

3.0 PREVIOUS SITE STUDIES

3.1 Assessment and Evaluation of Remedial Options In March and April of 2005, Cascade Environmental Services (CES) conducted a site assessment at the former wood post treatment area. The highest concentrations of PCP and dioxins/furans as 2,3,7,8-TCDD (tetrachlorodibenzo-p-dioxin) adjusted total equivalence factor (TEF) are generally limited to a relatively small area of approximately 800 square feet, and to surface soil less than 24 inches in depth. Subsurface soil contamination was only detected in samples from the hand-augered boring in the southern portion of the Wood Post Area and both PCP and dioxins/furans as TEF decreased significantly in concentration with depth. PCP was detected up to 25 feet in all four directions from the center of the Wood Post Area (Figure 3).

Results also indicated that PCP contamination does not appear to be migrating off-site via surface runoff. Groundwater flow direction mirrors topography and flows to the southwest towards the location of BR-MW-1. No pentachlorophenol was detected above method reporting limits in groundwater samples and dioxins/furans as TEF were detected at concentrations similar to background.

CES performed a streamlined human and ecological risk assessment and determined that an exposure scenario for future workers or campers would not be exposed to an unacceptable risk considering the existing concentrations in soil (CES, 2005). However, since the USFS plans to eventually sell the property, a more conservative residential exposure scenario was evaluated. Under that scenario, the levels of PCP and dioxins and furans exceeded acceptable long-term risk values. After considering various remedial alternatives, the USFS selected a removal action consisting of excavation and off-site disposal of impacted soil as the preferred remedy. The overall objective of the removal action is to allow for unlimited future uses of the property without any institutional or engineering controls.

An approximate 9-cubic-yard, contaminated waste pile (soil, concrete, and debris) was created during the exploration of the former concrete base near the center of the Wood Post Area. This waste pile has been encapsulated in plastic visqueen within the Wood Post Area until the implementation of the RA.

3.2 Waste Determination A considerable amount of effort was made to properly characterize the waste from the wood post area for disposal purposes. A revised waste determination was prepared by BB&A and submitted to DEQ for approval (BB&A, 2011). The Oregon DEQ agreed that the soil removed from the Wood Post Area was not a hazardous waste and could be managed as a solid waste at a Subtitle D landfill. Waste profiles were completed for each waste material and submitted to the landfill facility for approval prior to conducting the RA.

4.0 REMOVAL ACTION OBJECTIVES AND APPROACH The RA is intended to remove and appropriately manage soil impacted with hazardous constituents in a safe manner which is protective of the health and safety of workers and the local general public. Additionally, the RA should remove concentrations of contaminants to achieve applicable risk based concentrations for the anticipated future uses of the site.

August 2012 Project No. 76127.000, Phase 0004 2 Removal Action Report US Forest Service, Blue River Administration Site Blue River, Oregon

Implementation of the soil RA included the following field tasks:

 Excavate, transport, and dispose of the existing stockpiled waste soil and debris and in- place impacted soil from the Wood Post Area. Waste material was managed at a permitted Subtitle D solid waste facility.  Excavate, transport, and dispose of surface soil from the Used Oil Area to a Subtitle D solid waste facility. Confirmation soil samples were collected by PBS and analyzed for the constituents of concern.  Load and transport clean fill material from Strube Flat (to be supplied by the US Forest Service) to the Site for backfill. Utilize a local USFS gravel source adjacent to the site to backfill the Used Oil Area.  Backfill of the Wood Post Area excavation with fill material from Strube Flat and place an adequate amount of material to match surrounding grade. The fill material was compacted without any specification using the on-site backfill equipment.  Decommission the three on-site groundwater monitoring wells at the Site according to applicable state standards (Oregon Administrative Rules Chapter 690 Division 220) administered by the Oregon Water Resources Department (WRD), and guidelines of the Oregon DEQ.

Sampling activities included the following:

 Confirmation sampling from the Used Oil Area after removal of the suspect media. Note: Confirmation sampling of the Wood Post Area was conducted by BB&A following the completion of the soil removal.

5.0 SAFETY To mitigate potential chemical and physical risks associated with the work described herein, a site-specific Health and Safety Plan (HASP) was read and accepted by all Site personnel to provide and maintain effective safeguards for subsurface worker health and safety when suspected impacted soil is encountered during subsurface work. The Plan conforms to the requirements established under the Code of Federal Regulations 29 CFR 1910.120, including the use of appropriately-trained site workers, monitoring and identification of contaminated media, site health and safety officer's authorities and responsibilities, and health and safety briefings for applicable site personnel. The HASP requires workers involved in subsurface work to use a minimum level of personal protective equipment (PPE) such as protective clothing, chemically-resistant gloves, steel-toe boots, hardhats, and etc. The HASP will also define appropriate protocols for air monitoring, action level upgrades, and equipment and worker decontamination, and will augment any HASPs for normal subsurface work.

The HASP includes a USFS-approved Fire Plan to insure activities comply with appropriate regulations and policies when conducting operations on USFS property.

August 2012 Project No. 76127.000, Phase 0004 3 Removal Action Report US Forest Service, Blue River Administration Site Blue River, Oregon

6.0 SUMMARY OF FIELD ACTIVITIES The following field activities were conducted as part of implementing this RA: monitoring well decommissioning, soil removal from the Wood Post Area (Photo 1, Appendix A) and the Used Oil Areas, and confirmation sampling of the residual soils in the Used Oil Area. Additional field activities related to this RA were conducted by BB&A for the USFS and are not documented in this report.

6.1 Monitoring Well Abandonment – May 2012 A PBS Oregon Registered Geologist oversaw the decommissioning of the three Site monitoring wells (BR-MW-1, BR-MW-2, BR-MW-3) according to Oregon Water Resources Department regulations, Chapter 690, Division 690. On May 3rd, Major Drilling overdrilled each of the monitoring wells to their total depth using an 8-inch hollow-stem auger drilling rig. The total depths ranged from 30 to 40 feet below ground surface. The 2-inch PVC casing was removed and the annular fill material (i.e. bentonite, filter pack material) was removed from the borehole. The full depth of the borehole was backfilled with bentonite chips, hydrated in place in 1- to 2-foot lifts. An asphalt cap was placed in the upper foot to match the surrounding grade around each borehole location. The boring logs and the well abandonment logs are included in Appendix B.

6.2 Soil Excavation – May 2012 NRC Environmental Services, Inc. (NRC), the excavation subcontractor, mobilized to the Site on May 8th and 9th to excavate, load, and remove the PCP-contaminated soil and stockpiled waste from the Wood Post Area and PCS soil from the Used Oil Area. The material was transported in covered loads by Eugene Sand and Gravel to Coffin Butte Landfill in Corvallis, Oregon.

The objectives for the Wood Post Area included the following:  Soils within a 5-foot radius of the center (Location WP-17) will be excavated to a depth of 5 feet.  Soils in the southeast quadrant within 5-20 feet from WP-17 will be excavated to a depth 4 feet.  All other soil within 30 feet from the center will be excavated to a depth of 3 feet.  Removal of existing stockpile.  Confirmation sampling to demonstrate that residual concentrations meet residential risk-based concentrations.  The objective for the Used Oil Area included the following:  Excavate soils in a 10-foot by 30-foot area as marked in the field to a depth of 6 inches.  Use caution in excavating in the vicinity of buried underground power supply to the Warehouse building.  Confirmation sampling to demonstrate that residual concentrations meet residential risk-based concentrations.

Excavation and off-site transportation of contaminated soil followed the procedures provided in the Soil Removal Action Work Plan. Ten loads of waste soil were placed into truck and trailer combination dump trucks and transported offsite on May 8th (Photo 2, Appendix A). An additional 6 truck and trailer combination loads of soil were transported to the landfill on May 9th. The trailer with last load was filled with PCS from the Used Oil

August 2012 Project No. 76127.000, Phase 0004 4 Removal Action Report US Forest Service, Blue River Administration Site Blue River, Oregon

Area. A total of approximately 342 tons of PCP soil and 16 tons of PCS soil were removed during this two-day removal action.

During excavation it was agreed upon by USFS, PBS, and BB&A to widen and deepen the center of the PCP soil excavation. It was expanded from its original 5-foot radius and 5-foot depth to an approximate 12 by 12-foot area, and with a depth of 8 feet. After reaching the target depth, BB&A collected samples for PCP and dioxin/furan analysis. The Wood Post excavation area was covered with a wood-framed visqueen cover to minimize rainfall infiltration (Photo 3, Appendix 3).

At the end of the initial excavation for PCS in the Used Oil Area, PBS collected confirmation samples. A discussion of the sample results from the Used Oil Area is presented in Section 7.1 of this report.

6.3 Soil Excavation – June 2012 Based on the soil sampling results following the first excavation in May 2012, PBS and NRC returned to the site on June 5th to deepen both excavations. One load of PCP soil from the Wood Post Area was placed into the truck and trailer combination dump truck and transported to Coffin Butte landfill. Based on field observations, USFS instructed PBS to mobilize a second combination truck to remove additional PCP soil. A total of approximately 43 tons of soil was removed from the Wood Post Area and the excavation was deepened to a depth of about 15 feet below ground surface. The dimensions of the central excavation were expanded to approximately 16 feet by 12 feet (Photo 4, Appendix A).

One load of PCS from the Used Oil Area was placed into a single load dump truck and transported to Coffin Butte Landfill for disposal. Approximately 10 tons of PCS was removed. The excavation was deepened an additional 8 to 10 inches below ground surface (Photo 5, Appendix A).

At the end of the second PCS excavation in the Used Oil Area, PBS collected additional confirmation samples. A discussion of the sample results from the Used Oil Area is presented in Section 7.2 of this report.

A total of 411 tons of soil was removed from the site during both removal events. A total of 385 tons of soil was removed from the Wood Post Area and 26 tons of soil was removed from the Used Oil Area. A summary of the soil removal quantities is provided in Table 1, and soil disposal receipts are included in Appendix C.

6.4 Used Oil Area Soil Confirmation Sampling – May and June 2012 Confirmation soil samples were collected from the base of the excavation following the removal of contaminated soil from the Used Oil Area on May 9th. Three total composite samples (CS-1 thru CS-3) were collected from the floor of the PCS Area excavation within approximately six (6) inches of the excavated surface (Figure 3 and Photo 6, Appendix A).

Each composite sample was made up of three subsamples collected from locations evenly spaced across approximately one-third of the excavation floor. Samples were collected from the floor of the excavation and placed directly into a stainless steel bowl and then very gently mixed to homogenize the sample. Each sample was placed in a labeled, laboratory-supplied container with Teflon-lined lids using either a fresh pair of

August 2012 Project No. 76127.000, Phase 0004 5 Removal Action Report US Forest Service, Blue River Administration Site Blue River, Oregon

disposable gloves or clean stainless steel hand tools that were decontaminated between samples. Disposable sampling equipment was wiped clean prior to disposal as ordinary solid waste.

The three composite samples and the nine subsamples were stored in a cooler with ice and delivered via overnight courier to TestAmerica, Inc. (TAI) laboratory in Beaverton OR, for analysis. The samples were analyzed for diesel and heavy oil range total petroleum hydrocarbons (TPH-Dx) and select metals (cadmium, chromium and lead). The subsamples were archived in the event that there was a need for additional laboratory analysis.

Based on initial sampling results from the Used Oil Area, USFS and PBS agreed to conduct additional excavation and re-sampling. Following the deepening of the central portion of the excavation, two additional composite samples (CS-4 and CS-5) were collected using the same sampling procedures as the May 9th sampling event. The two additional composite samples were collected at depths of approximately 8 to 10 inches below ground surface. The samples were submitted to TAI for analysis of TPH-Dx, metals and additional follow-up constituents.

6.5 Soil Backfill – July 2012 Based on the confirmation sampling results collected from the Wood Post and Used Oil Areas, indicating that all residual contaminant concentrations met applicable risk-based regulatory levels, the USFS instructed PBS to implement the backfill activities. NRC mobilized to the site to perform backfill activities on July 24th and 25th, 2012. PBS was on site coordinating and overseeing the backfill of both excavations. Clean backfill material was transported to the site from Strube Flat, approximately nine (9) miles from the site and from a second location off of Blue River Reservoir Road, approximately seven (7) miles from the site (Photo 7, Appendix A). NRC established fire suppression measures at the site and at each of the borrow locations according to the USFS Fire Plan. Additional clean gravel backfill was collected from a location off of FS Road 2620-130 and utilized to fill the PCS excavation area (Photo 8, Appendix A). All backfill material was used to restore the excavation areas to the previous ground surface. Thirty-eight truck loads of imported clean fill (approximately 380 cubic yards) were used to backfill both excavations. Additionally, NRC removed and disposed of the temporary construction fencing surrounding both the PCP and PCS excavation areas.

7.0 USED OIL AREA SOIL CONFIRMATION SAMPLE FINDINGS

7.1 Initial Sampling Results – May The samples collected after the initial removal action detected diesel-range hydrocarbons in one sample (200 mg/kg at CS-2) and detected heavy oil-range hydrocarbons in all three samples ranging from 73 mg/kg (CS-1) and 1,400 mg/kg (CS- 2). Soil samples were also analyzed for metals using EPA Method 6020. Chromium was detected in all three samples ranging from 25 to 48 mg/kg and lead was detected in all three samples ranging from 6 to 12 mg/kg. Cadmium was detected below the method reporting limit in all three samples at estimated values between 0.17 and 0.83 mg/kg.

7.2 Final Sampling Results – June Following the second removal action conducted to removal soils in the vicinity of CS-2, samples (CS-4 and CS-5) were collected from the remaining in-place soils. Both of these

August 2012 Project No. 76127.000, Phase 0004 6 Removal Action Report US Forest Service, Blue River Administration Site Blue River, Oregon

samples detected no diesel-range or heavy oil-range hydrocarbons. Chromium was detected in both samples at 33 to 34 mg/kg and lead was detected in both samples at 7.5 and 8.6 mg/kg. Cadmium was not detected at or above the method reporting limit. Sample CS-5 was also analyzed for volatile organic compounds (VOCs), using Method 8260B and poly-aromatic hydrocarbons (PAHs) using EPA Method 8270 SIM. No VOCs or PAHs were detected at or above the method reporting limit in the sample CS-5. The results are summarized in Table 2 and the complete laboratory report is provided in Appendix D.

7.3 Evaluation of Results The initial sampling results were compared with the most conservative Oregon risk- based concentrations (RBCs) for a residential exposure scenario. One of the initial samples (CS-2) contained a combined total diesel and heavy oil range TPH at a concentration of 1,600 mg/kg. This concentration is slightly above the residential RBC for direct contact (ingestion, inhalation, dermal) with diesel range TPH of 1,100 mg/kg. Even though most of the detected TPH was considered to be in the heavy oil range, all of the detected TPH was considered to be diesel range TPH for this evaluation. This approach is considered to be a conservative way to evaluate heavy oil range TPH, since there is no generic RBC for heavy oil. Based on this evaluation it was recommended to remove additional soil.

After the second soil removal from the middle of the Used Oil Area, confirmation samples detected no diesel or heavy oil-range TPH at or above the method reporting limit (MRL). Additionally no cadmium was detected at or above the MRL. The concentrations of lead and chromium are well below the residential RBC and likely represent naturally occurring levels in the site soil. Additionally, one of the samples was further analyzed for VOCs and PAHs and no constituents were detected above the MRL for each compound.

8.0 SUMMARY AND CONCLUSION PBS conducted a soil removal action for the USFS at the Blue River Administration Site. The RA consisted of removing soil impacted with wood treating compounds at the former Wood Post Area and used oil compounds at the Used Oil Area adjacent to the Warehouse building. The RA included excavation events, one in May and one in June following initial sampling results indicating additional soil removal was warranted. A total of 385 tons of soil was removed from the Wood Post Area and a total of 26 tons was removed from the Used Oil Area.

PBS conducted sampling of the Used Oil Area to confirm that following the second soil removal residual concentrations of used oil constituents met the Oregon residential risk-based concentrations for long-term exposure. The sampling of the Wood Post Area was performed by another USFS contractor and is reported under a separate report.

After receiving acceptable confirmatory sampling results from both areas, the USFS decided to backfill both excavations in July. The Wood Post Area was backfilled with clean fill material staged at two nearby locations on the forest. Crushed gravel stockpiled at the Site was used to backfill the Used Oil Area.

In addition to the soil removal, PBS oversaw the decommissioning of the three on site monitoring wells by an Oregon licensed monitoring well constructor as part of this removal action.

August 2012 Project No. 76127.000, Phase 0004 7 Removal Action Report US Forest Service, Blue River Administration Site Blue River, Oregon

9.0 LIMITATIONS PBS has prepared this report for use by the US Forest Service, Willamette National Forest. This report is for the exclusive use of the client and is not to be relied upon by other parties. It is not to be photographed, photocopied, or similarly reproduced in total or in part without the expressed written consent of the client and PBS.

This study was limited to the tests, locations, and depths as indicated to determine the absence or presence of certain contaminants. The site as a whole may have other contamination that was not characterized by this study. The findings and conclusions of this report are not scientific certainties but, rather, probabilities based on professional judgment concerning the significance of the data gathered during the course of this investigation. PBS is not able to represent that the site or adjoining land contain no hazardous waste, oil, or other latent conditions beyond that detected or observed by PBS.

10.0 SIGNATURES PBS ENGINEERING AND ENVIRONMENTAL, INC.

08/24/12 ______N. Toby Scott, R.G. Date Senior Project Manager

08/24/12 ______Reviewed by Dulcy Berri, R.G. Date Principal Hydrogeologist

August 2012 Project No. 76127.000, Phase 0004 8 Removal Action Report US Forest Service, Blue River Administration Site Blue River, Oregon

11.0 REFERENCES

BB&A Environmental Inc, Addendum to the Abbreviated Engineering Evaluation/Cost Analysis Addendum, Blue River Wood Post Site, Willamette National Forest, September 8, 2011

Cascade Earth Sciences, Abbreviated Engineering Evaluation/Cost Analysis: Blue River Wood Post Site, Willamette National Forest, Oregon August 22, 2005

Cascade Earth Sciences, Final Report: Engineering Evaluation/Cost Analysis Addendum, Blue River Wood Post Site, Willamette National Forest, August 15, 2006

PBS Engineering + Environmental, Inc, Removal Action Soil Management Plan, Blue River Wood Post Site, Willamette National Forest, April, 2012.

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TAB 1 Figures

TAB 2 Tables

Table 1 PBS Project #: 76127.000 Solid Waste Disposal Summary- Report Date: August 2012 Wood Post and Used Oil Areas USFS Wood Post Site, Blue River, Oregon

Wood Treat Used Oil Area Time Returned Truck Number Time Removed Time Disposed Area Tonnage Tonnage to Site

May 8th 51-818 830 1024 15.12 ----- 1230 51-466 842 1038 16.66 ----- 1255 51-404 911 1100 15.82 ----- 1318 51-006 945 1135 20.05 ----- 1350 51-819 1010 1203 19.11 ----- 1423 51-818 1250 1451 23.42 ------51-466 1315 1513 23.68 ------51-404 1335 1528 23.95 ------51-006 1412 800 (9th) 25.12 ------51-819 1450 759 (9th) 25.78 ------May 9th 51-818 720 921 21.53 ----- 1145 51-466 740 939 22.71 ------51-404 755 946 22.07 ------51-819 1035 1245 27.98 ------51-606 1055 1253 27.68 ------51-818 1240 1427 11.02 16.06 ----- First Removal Subtotal 341.7 16.1 June 5th 51-804 1005 ----- 10.23 ----- 51-818 1210 20.63 ------51-404 1422 22.42 ------Second Removal Subtotal = 43.1 10.2 Total Solid Waste Removed = 384.8 26.3 Combined Total Solid Waste Removal = 411.1 Tons Notes: All material transported to Coffin Butte Landfill under manifest as solid waste. Time is shown in 24 hrs. ----- = not applicable

Table 2 PBS Project No. 76127.000 Summary of Soil Analysis Report Date: August 2012 Blue River Warehouse - Used Oil Area Sample ID- Depth (Ft) CS-1 CS-2 CS-3 CS-4 CS-5 DEQ Soil RBC Date 5/9/12 5/9/12 5/9/12 6/5/12 6/5/12 Direct Construction Leaching to PARAMETER Ingestion Worker Groundwater Residential TPH-DX - NWTPH Diesel Range <17 200 <17 <17 <18 1,100 4,600 9,500 Heavy Oil Range 73 1,400 75 <34 <36 NA NA NA METALS- EPA 6010 Cadmium 0.83 J 0.19 J 0.17 J <1.3 < 1.4 39 150 NA Chromium 25 48 44 34 33 120,000 460,000 NA Lead 6 12 11 7.5 8.6 400 800 30 VOCs- EPA 8260B Benzene ------<0.19 7.3 340 0.0093 Toluene ------<0.19 5,800 24,000 140 Ethylbenzene ------<0.19 30 1,600 0.16 Xylenes ------<0.19 1,400 19,000 25 Naphthalene ------<0.39 4.6 580 0.087 All other VOCs ------ND various various various PAHs - EPA 8270M-SIM Benzo(a)pyrene ------<0.019 0.015 2.1 0.9 Benzo(b)fluoranthene ------<0.019 0.15 210 4 Naphthalene ------<0.019 4.6 580 0.087 Dibenz(a,h)anthracene ------<0.019 0.015 2.1 3.4 All other PAHs ------ND various various various Notes: Concentrations in milligrams per kilogram (mg/kg). -- = not analyzed for the specific compound ND = not detected above the method reporting limit DEQ Soil RBC = DEQ Soil Risk-Based Concentrations for Individual Chemicals, 9/15/09 >Max =The constituent RBC is greater than 100,000 mg/kg. >Csat = This soil RBC exceeds the limit for three-phase equilibrium partitoning. Bold =Deteced concentrations greater than the method reporting limit. J= Estimated value below the method reporting limit.

APPENDIX A Site Photographs

Removal Action Report US Forest Service, Blue River Administration Site Blue River, Oregon

Photo 1: Pre-excavation view to north of Wood Post Area and covered soil stockpile. Note access road (rear) and center wood stake (WP-17).

Photo 2: Initial excavation of Wood Post Area (5/8/12). Note center area excavated to depth of approximately eight (8) ft bgs (facing north).

August 23, 2012 Project No. 76127.000 1 Removal Action Report US Forest Service, Blue River Administration Site Blue River, Oregon

Photo 3: Wood Post Area following initial excavation (5/9/12) showing temporary cover and barrier fencing (facing south).

Photo 4: Wood Post Area excavation following final excavation (6/5/12). Note barrier fencing (facing south).

August 23, 2012 Project No. 76127.000 2 Removal Action Report US Forest Service, Blue River Administration Site Blue River, Oregon

Photo 5: Used Oil Area excavation following final excavation (6/5/12). Note barrier fencing (facing east).

Photo 6: Initial excavation of Used Oil Area (5/9/12). Note sample jars indicating sample locations (facing east).

August 23, 2012 Project No. 76127.000 3 Removal Action Report US Forest Service, Blue River Administration Site Blue River, Oregon

Photo 7: Wood Post Area backfilled with imported clean fill material to grade (facing south).

Photo 8: Used Oil Area after being backfilled with 3/4 –inch – minus gravel fill on 7/25/12 (facing east).

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