On March 6, 2014, 17 shallow soil samples were collected along the proposed trail alignment according to

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2 LAKE EWAUNA TRAIL LEVEL 2 FIELD SAMPLING ASSESSMENT the proposed alignment (Figure 1). The trail will also include the installation of a geothermal snow melt system, allowing for year round use of the trail with minimal maintenance. The geothermal supply and return lines will be constructed under the trail in excavations not expected to exceed 3 feet. Contaminants of Concern Due to historical activities of the former lumber mill, soil and groundwater may be contaminated with petroleum products, PAHs, wood treating chemicals such as pentachlorophenol (PCP), dioxins, furans, pesticides, solvents, and inorganic constituents such as lead and arsenic (DEQ, 2013a). Sampling Approach and Locations On March 6, 2014, 17 shallow soil samples were collected along the proposed trail alignment according to the Draft Sampling and Plan prepared in February 2014 (Figure 1) (CH2M HILL, 2014). Fifteen of the 17 soil samples were collected to a maximum of one foot bgs. The remaining two soil samples (SE 4 and SE 5) were collected from geotechnical test pits, excavated by backhoe, located in the general location of the proposed bridge footings. Multi incremental sampling was used to represent the soil quality for these locations. Soil was homogenized over the sample interval prior to sampling. All samples were analyzed for TPH, PAHs, PCP, and metals (arsenic, barium, chromium, cadmium, lead, mercury, selenium, and silver). Note that locations SE 8 and SE 13 are the closest sampling locations to the areas of wetland removal fill activities. These sampling locations, as well as wetland removal fill areas, are called out on Figure 1. Investigation s Soil logs and sampling details for the shallow soil samples are contained in the field notes attached as Appendix A. Dark brown soil with the presence of wood waste (sawdust) and red volcanic rock was commonly noted in the sampling excavations. Field notes indicate that sample location SE 15 was shifted in the field to avoid an area with recent placement of bark mulch. The two geotechnical test pits, SE 4 and SE 5, appeared to be completed in fill material along the bioswale. SE 4, approximately 12 feet north of the bioswale, was completed to a depth of 3.5 feet bgs. Groundwater was encountered at a depth of 3 feet bgs. Fill in this area appeared to be pumice with a green gray silt layer. SE 5, located approximately 30 feet south of the bioswale, was completed to a depth of 6 feet bgs. Fill debris was encountered in this location including bricks and logs, and a strong diesel or wood waste odor was observed. A sheen was observed in the excavation, but could not be replicated with a bag sheen test. Representative photos of the sampling locations are included as Appendix B. Analytical results for TPH, PAHs, PCP, and metals are included in Table 1 and laboratory reports are included as Appendix C. These results were evaluated in the following three step screening process: Initial Risk Based Screening (Table 1) Analytical results were compared to the most conservative DEQ risk based concentrations (RBCs) from the Table of Generic Risk Based Concentrations for Petroleum Constituents and Total Petroleum Hydrocarbons (DEQ, 2012). The exposure scenarios of soil ingestion, dermal contact and inhalation, and leaching to groundwater, both for residential receptors, were used for comparison. Metals concentrations were compared to the Regional 95% UPL Default Background Concentrations for Metals in Soil, the Basin and Range Region, from Development of Oregon Background Metals Concentrations in Soil (DEQ, 2013b). Risk to Site Workers (Table 2) Constituents which exceeded RBCs in the initial screening were further screened to evaluate risk to site workers. Risk receptors were selected for the exposure scenario of soil ingestion, dermal contact and inhalation from DEQ s Table of Generic Risk Based Concentrations for Petroleum Constituents and Total Petroleum Hydrocarbons. These included the construction and excavation worker receptor scenarios. RBCs for the occupational receptor in the scenario of soil leaching to groundwater were also included for comparison with site data. Constituents were compared to the more conservative of these RBCs. 2

3 LAKE EWAUNA TRAIL LEVEL 2 FIELD SAMPLING ASSESSMENT Waste Screening Evaluation (Table 3) Total metals results for all soil samples were compared to 20 times the Toxicity Characteristic Leaching Procedure (TCLP) limits to assess whether soil will require hazardous waste handling according to EPA regulation. All samples had detected concentrations of TPH Diesel, TPH Oil, multiple PAHs, and metals. Six of 17 samples had detected concentrations of PCP, but no concentrations exceeded the associated RBCs. RBCs were exceeded for the two TPH fractions (TPH Diesel and TPH Oil) and two PAHs (naphthalene and benz(a)pyrene) in at least one sample. In addition, six metals (arsenic, cadmium, lead, mercury, selenium, and silver) exceeded regional background concentrations in at least one sample. The geotechnical test pits had the most frequent exceedances of RBCs; including naphthalene and benzo(a)pyrene at SE 4, and TPH Diesel, TPH Oil, naphthalene, and benzo(a)pyrene at SE 5. All six previously listed metals were above regional background concentrations in both samples. Exceedances of the residential RBC for soil ingestion, dermal contact and inhalation for benzo(a)pyrene also occurred in SE 2, SE 7, SE 13, SE 15, and SE 17. RBC exceedances of more than one metal occurred in seven samples: SE 3, SE 4, SE 5, SE 6, SE 7, SE 13, and SE 15. The remaining 8 out of 15 metals exceedances occurred only for arsenic. Although arsenic was above the most conservative RBC in 15 of the 17 samples, only one sample (SE 4) exceeded the regional background concentration of 12 mg/kg. Two other metals concentrations lead concentrations measured in SE 4 and SE 5 exceeded both the regional background concentration and the RBC for soil ingestion, dermal contact and inhalation. Construction and excavation worker RBCs for soil ingestion, dermal contact and inhalation, as well as the occupational receptor scenario for leaching to groundwater, were used to evaluate constituents with exceedances of most conservative RBCs. Of these, lead is the only constituent with exceedances of the most conservative RBC (the occupational receptor scenario for soil leaching to groundwater), at a concentration of 30 mg/kg. However, this value was calculated assuming that all lead within the soil will leach into water during a routine leaching test, as discussed in Section B.3.4 of DEQ s 2012 Risk Based Decision Making for the Remediation of Petroleum Contaminated Sites. The lead leachate concentration must not exceed 1.5 mg/l, which is 100 times greater than the RBC for tap water (DEQ, 2012). To evaluate site specific leaching potential of the samples with lead exceedances, Toxicity Characteristic Leaching Potential (TCLP) was analyzed for those samples with the highest lead concentrations, SE 4 and SE 5, resulting in a value of 0.03 mg/l for SE 4 and a non detect for SE 5. Given that TCLP data is available for soil samples collected at the property, it is appropriate to compare these values to the lead leachate concentration limit of 1.5 mg/l. This comparison shows that the site specific TCLP is significantly lower than the maximum allowable leachate concentration, indicating that the lead concentrations observed in the site soils will not result in groundwater exceeding lead RBCs in tap water. The results of the two stage risk evaluation indicates no sitespecific protocols will be required to protect site workers. In addition to assessing risk to site workers, an evaluation of whether excavated soil will need special handling or disposal requirements was conducted (Table 3). TCLP analysis is designed to simulate landfill conditions and assesses the mobility of analytes in wastes. EPA regulated wastes are defined with TCLP limits under RCRA (40 CFR Part 261). The contaminants of concern at the site which could classify site soils as hazardous waste are metals. Therefore, total metals concentrations were evaluated using the 20 times TCLP rule. This rule described in Use of Total Waste in Toxicity Characteristic Determinations (EPA, 1994) indicates that total metals analysis can be used as a proxy for TCLP results with the limits at 20 times those used for TCLP. Lead is the only total metal with exceedances of the 20 times TCLP limits at locations SE 4 and SE 5. TCLP was analyzed as a result of these exceedances and resulting values were below the TCLP limit of 5 mg/l at 0.03 mg/l and nondetect, respectively. Consequently, soil at the site will require contaminated media management and may need to be disposed of at a Subtitle D landfill handling municipal solid waste.

4 LAKE EWAUNA TRAIL LEVEL 2 FIELD SAMPLING ASSESSMENT Conclusion and Recommendations This Level 2 Preliminary Site Investigation included the collection of 17 shallow soil samples along the proposed project alignment. A risk evaluation to site workers indicated that while soil collected at the site exceeds some of the most conservative DEQ RBCs in some areas, it does not pose an unacceptable risk to current occupational, construction, and/or excavation workers. Although the lead concentrations in soil were greater than the RBCs for soil leaching to groundwater, this value is calculated using the assumption that all lead from the soil would leach to water during a standard leaching test. Site specific TCLP data indicates that the lead leachate is significantly lower than the concentration needed to cause groundwater to exceed the lead RBC for tap water. Site soils and groundwater do not pose an unacceptable risk to site workers and no site specific protocols are required to address worker safety. An evaluation of disposal requirements of site soils was conducted using the 20 times TCLP rule established by EPA. Though lead exceeded the 20 times TCLP rule for two samples, TCLP results were below the limits requiring hazardous waste disposal. However, site soils will still require handling under a contaminated media management plan, which will include provisions for offsite disposal as a nonhazardous waste. Site groundwater was not sufficiently characterized in this investigation to assess disposal requirements; therefore, it is likely that groundwater will need to be characterized and managed during the excavations for the bridge footings and any other excavation deep enough to encounter groundwater. References CH2M HILL Hazardous Materials Corridor Study, Lake Ewauna Trail, Klamath Avenue to Spring Street, Klamath County, Klamath Falls, Oregon. February. CH2M HILL Draft Sampling and Plan, Lake Ewauna Trail. Prepared for City of Klamath Falls. February. Oregon Department of Environmental Quality (DEQ). 2013a. Environmental Cleanup Site Information (ECSI) Database, Site Summary Report Details for Site ID 2307, Modoc Lumber (Former) Study Area. Accessed January Oregon Department of Environmental Quality (DEQ). 2013b. Development of Oregon Background Metals Concentrations in Soil. March. Oregon Department of Environmental Quality (DEQ) Risk Based Decision Making for the Remediation of Petroleum Contaminated Sites, Table of Generic Risk Based Concentrations for Petroleum Constituents and Total Petroleum Hydrocarbons. Updated July United States Environmental Protection Agency (EPA) Use of Total Waste in Toxicity Characteristic Determinations. RCRA Hotline Report. January. Accessed September

5 Appendix A Field Notes

6 Appendix B Representative Photographs

7 Appendix C Laboratory Reports

8 Bioswale Bioswale SE-2 SE-3 SE-4 SE-5 SE-6 SE-7 SE-8 Wetland Removal-Fill Area (Close Up 1) SE-9 SE-1 SE-10 SE-8 Close Up 1 Close Up 2 SE-11 SE-13 SE-13 SE-12 SE-16 Wetland Removal-Fill Area (Close Up 2) SE-14 SE-15 SE-17 Site Location LEGEND Soil Sample Location Proposed Trail Alignment Wetland Removal-Fill Permanent Temporary Feet Vicinity road map source: Esri, DeLorme, NAVTEQ, TomTom, USGS, Intermap, ipc, NRCAN, Esri Japan, METI, Esri China (Hong Kong), Esri (Thailand) Figure 1 Soil Sample Locations and Removal-Fill along Proposed Trail Alignment Lake Ewauna Trail Level 2 Field Sampling Assessment Klamath Falls, Klamath County \\ROSA\PROJ\ODOT\462902LAKEEWAUNA\TASK 2 - SURVEY\GIS\MAPFILES\SAMPLELOCATIONS2.MXD GGEE 6/24/2015 4:00:18 PM

9 TABLE 1 Initial Risk Based Screening of Soil Analytical s for PAHs, SVOCs, and Metals Lake Ewauna Trail Level 2 Field Sampling Assessment Sample Location RBC (Soil ingestion, SE 1 SE 2 SE 3 SE 4 SE 5 SE 6 SE 7 SE 8 SE 9 SE 10 SE 11 SE 12 SE 13 SE 14 SE 15 SE 16 SE 17 RBC Background dermal contact and Sample (Leaching to Metals 3/6/2014 3/6/2014 3/6/2014 3/6/2014 3/6/2014 3/6/2014 3/6/2014 3/6/2014 3/6/2014 3/6/2014 3/6/2014 3/6/2014 3/6/2014 3/6/2014 3/6/2014 3/6/2014 3/6/2014 inhalation) 1 groundwater) 2 Concentrations 3 Sample Depth (ft bgs) Residential Scenario Moisture (%) Total Petroleum Hydrocarbons (TPH) (mg/kg) TPH Diesel 1,100 9, J 13.5 J 13.6 J 331 J 2, J 116 J 18.5 J J 113 J 15 J 37.2 J 7.86 J 7.87 J TPH Oil 2,800 > 1,000, J 104 J 93.2 J 2,300 10, J 1,750 J ,580 J J 64.6 J Polynuclear Aromatic Hydrocarbons (PAHs) (µg/kg) Naphthalene 4, J 2.85 J 0.34 J J 7.37 J Methylnaphthalene 0.11 U J J J 2.74 J 1.37 J 1.34 J 0.2 J J 4.5 J Methylnaphthalene 0.12 U U J 4.92 J 1.37 J 1.43 J 0.65 U 0.89 J 0.11 U 3.6 J 1.12 J 3.12 J 1.79 J 5.4 Acenaphthylene 0.56 J U J J 0.86 J 0.12 J J 5.18 J Acenaphthene 4,700, U J U 0.89 U 0.41 U 0.45 U 0.51 U 0.45 U U 0.88 J 0.45 U 1.45 U 0.7 J 3.16 Fluorene 3,100, U J J 1.6 J 0.6 J 0.95 J 0.4 J 0.32 U J 1.24 J 0.5 J 1.91 J 0.69 J 2.92 Phenanthrene 0.49 J J Anthracene 23,000, J J J 0.54 J 0.1 J 5.02 J 1.07 J 5.85 J Fluoranthene 2,300, J 0.46 J Pyrene 1,700, Benz(a)anthracene 150 3, J J 0.45 U U J Chrysene 14, J J 1 J U J Benzo(b)fluoranthene 150 4, J 0.48 U Benzo(k)fluoranthene 1, J J U 0.42 U U 0.81 U 1.08 J Benzo(a)pyrene J U 0.47 U J Indeno(1,2,3 c,d)pyrene U J 0.55 U 0.1 U U 8.87 J Dibenz(a,h)anthracene 15 3, U U 0.44 U U 1.05 U 0.49 U 0.53 U 0.6 U 0.54 U 0.1 U 1.04 U 0.53 U 1.73 U 0.51 U 4.31 Benzo(g,h,i)perylene U 0.49 U J Semi volatile Organic Compounds (µg/kg) Dibenzofuran 0.1 U J J 2.27 J 0.76 J 0.95 J 0.84 J 1.13 J U 1.48 J 0.76 J 2.5 J 1.79 J 15 Pentachlorophenol J U 2.56 U 2.32 U 1.07 U 1.17 U 1.33 U 1.18 U 0.61 J 2.29 U 4.61 J 3.8 U 1.13 U 1.08 U Metals, dry weight (mg/kg) Arsenic J J J J 0.37 J J J Barium 15, Cadmium U 0.18 J 1.18 U J 0.67 J U 0.24 J 0.33 J 0.33 J J 0.35 J 0.11 J 0.7 J 0.45 J 0.23 J Chromium 120, Lead J Mercury J J J J Selenium J 0.21 U 1.88 U 0.91 J 0.44 J 0.36 U 0.25 J 0.16 U 0.21 J 0.25 J 0.21 J 0.14 U 0.26 U 0.17 J 0.46 J 0.32 U 0.33 U Silver J 0.13 U 1.18 U 1.5 J 1.53 J 0.22 U 0.11 U U U 0.12 U 0.12 U U 0.16 U U 0.23 U 0.2 U 0.22 J Metals, TCLP (µg/l) Lead U NOTES: (1) = Table of Generic Risk Based Concentrations for Petroleum Constituents and Total Petroleum Hydrocarbons and Generic Remedy for Simple Risk Based Sites. Oregon DEQ. (Updated July, 2012) Residential receptor for soil ingestion, dermal contact and inhalation. (2) = Table of Generic Risk Based Concentrations for Petroleum Constituents and Total Petroleum Hydrocarbons and Generic Remedy for Simple Risk Based Sites. Oregon DEQ. (Updated July, 2012) Residential receptor for leaching to groundwater. (3) = Regional 95% UPL Default Background Concentrations for Metals in Soil (Basin and Range), from Oregon DEQ Development of Oregon Background Metals Concentrations in Soil. March. Bold = Analyte Detected mg/kg = milligram per kilogram µg/kg = microgram per kilogram Shaded = Exceeds risk based concentration (RBC) value or background metals concentration. U = Not detected at specified detection limit J = Estimated value below reporting limit = not analyzed

10 TABLE 2 Soil Analytical s for Selected PAHs and Metals Evaluated for Risk to Site Workers Lake Ewauna Trail Level 2 Field Sampling Assessment Sample Location RBC (Soil ingestion, RBC (Leaching to SE 1 SE 2 SE 3 SE 4 SE 5 SE 6 SE 7 SE 8 SE 9 SE 10 SE 11 SE 12 SE 13 SE 14 SE 15 SE 16 SE 17 Sample dermal contact and inhalation) groundwater) 3 3/6/2014 3/6/2014 3/6/2014 3/6/2014 3/6/2014 3/6/2014 3/6/2014 3/6/2014 3/6/2014 3/6/2014 3/6/2014 3/6/2014 3/6/2014 3/6/2014 3/6/2014 3/6/2014 3/6/2014 Sample Depth (ft bgs) Construction Worker 1 Excavation Worker 2 Occupational Total Petroleum Hydrocarbons (TPH) (mg/kg) TPH Diesel 4,600 >Max >Max 10 J 13.5 J 13.6 J 331 J 2, J 116 J 18.5 J J 113 J 15 J 37.2 J 7.86 J 7.87 J TPH Oil 11,000 >Max >Max 64.1 J 104 J 93.2 J 2,300 10, J 1,750 J ,580 J J 64.6 J Polynuclear Aromatic Hydrocarbons (PAHs) (µg/kg) Naphthalene 580,000 16,000, J 2.85 J 0.34 J J 7.37 J Benzo(a)pyrene 2,100 59,000 >Csat J U 0.47 U J Metals, dry weight (mg/kg) Arsenic J J J J 0.37 J J J Cadmium 150 4, U 0.18 J 1.18 U J 0.67 J U 0.24 J 0.33 J 0.33 J J 0.35 J 0.11 J 0.7 J 0.45 J 0.23 J Lead J Mercury 93 2, J J J J Selenium 0.24 J 0.21 U 1.88 U 0.91 J 0.44 J 0.36 U 0.25 J 0.16 U 0.21 J 0.25 J 0.21 J 0.14 U 0.26 U 0.17 J 0.46 J 0.32 U 0.33 U Silver 1,500 43, J 0.13 U 1.18 U 1.5 J 1.53 J 0.22 U 0.11 U U U 0.12 U 0.12 U U 0.16 U U 0.23 U 0.2 U 0.22 J NOTES: (1) = Table of Generic Risk Based Concentrations for Petroleum Constituents and Total Petroleum Hydrocarbons and Generic Remedy for Simple Risk Based Sites. Oregon DEQ. (Updated July, 2012) Construction Worker receptor for soil ingestion, dermal contact and inhalation. (2) = Table of Generic Risk Based Concentrations for Petroleum Constituents and Total Petroleum Hydrocarbons and Generic Remedy for Simple Risk Based Sites. Oregon DEQ. (Updated July, 2012) Excavation Worker receptor for soil ingestion, dermal contact and inhalation. (3) = Table of Generic Risk Based Concentrations for Petroleum Constituents and Total Petroleum Hydrocarbons and Generic Remedy for Simple Risk Based Sites. Oregon DEQ. (Updated July, 2012) Residential receptor for leaching to groundwater. Bold = Analyte Detected mg/kg = milligram per kilogram µg/kg = microgram per kilogram Shaded = Exceeds risk based concentration (RBC) value. U = Not detected at specified detection limit J = Estimated value below reporting limit = not analyzed

11 TABLE 3 Waste Screening Evaluation of Soil Analytical s for Metals Lake Ewauna Trail Level 2 Field Sampling Assessment Metals, dry weight (mg/kg) Sample Location SE 1 SE 2 SE 3 SE 4 SE 5 SE 6 SE 7 SE 8 SE 9 SE 10 SE 11 SE 12 SE 13 SE 14 SE 15 SE 16 SE 17 Sample TCLP Limit 1 20 x TCLP Limit (mg/l) (mg/kg) 3/6/2014 3/6/2014 3/6/2014 3/6/2014 3/6/2014 3/6/2014 3/6/2014 3/6/2014 3/6/2014 3/6/2014 3/6/2014 3/6/2014 3/6/2014 3/6/2014 3/6/2014 3/6/2014 3/6/2014 Sample Depth (ft bgs) Arsenic J J J J 0.37 J J J Barium 100 2, Cadmium U 0.18 J 1.18 U J 0.67 J U 0.24 J 0.33 J 0.33 J J 0.35 J 0.11 J 0.7 J 0.45 J 0.23 J Chromium Lead J Mercury J J J J Selenium J 0.21 U 1.88 U 0.91 J 0.44 J 0.36 U 0.25 J 0.16 U 0.21 J 0.25 J 0.21 J 0.14 U 0.26 U 0.17 J 0.46 J 0.32 U 0.33 U Silver J 0.13 U 1.18 U 1.5 J 1.53 J 0.22 U 0.11 U U U 0.12 U 0.12 U U 0.16 U U 0.23 U 0.2 U 0.22 J Metals, TCLP (mg/l) Lead U NOTES: (1) = EPA regulatory levels for Toxicity Characteristic Leaching Procedure (TCLP) meeting the definition of EPA toxicity under RCRA (40 CFR Part 261) of D004 through D052. Bold = Analyte Detected mg/kg = milligram per kilogram mg/l = milligrams per Liter Shaded = Exceeds waste screening limit. U = Not detected at specified detection limit J = Estimated value below reporting limit = not analyzed

12 Appendix A Field Notes

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24 Appendix B Representative Photographs

25 Appendix B Representative Shallow Soil Sampling Photographs March 2014 Lake Ewauna Trail Level 2 Preliminary Site Investigation Photograph B 1. Shallow soil sample location SE 1 (3/6/2014). Photograph B 2. Shallow soil sample location SE 2 (3/6/2014). Photograph B 3. Shallow soil sample location SE 3 (3/6/2014). Photograph B 4. Test pit location SE 4 (3/6/2014), near western pedestrian bridge footing.

26 Appendix B Representative Shallow Soil Sampling Photographs March 2014 Lake Ewauna Trail Level 2 Preliminary Site Investigation Photograph B 5. Excavation spoils from test pit location SE 5 (3/6/2014), near eastern pedestrian bridge footing. Photograph B 6. Shallow soil sample location SE 6 (3/6/2014). Photograph B 7. Shallow soil sample location SE 7 (3/6/2014). Photograph B 8. Shallow soil sample location SE 8 (3/6/2014). Location is adjacent to wetland removal fill area.

27 Appendix B Representative Shallow Soil Sampling Photographs March 2014 Lake Ewauna Trail Level 2 Preliminary Site Investigation Photograph B 9. Shallow soil sample location SE 9 (3/6/2014). Photograph B 10. Shallow soil sample location SE 10 (3/6/2014). Photograph B 11. Shallow soil sample location SE 11 (3/6/2014). Photograph B 12. Shallow soil sample location SE 12 (3/6/2014).

28 Appendix B Representative Shallow Soil Sampling Photographs March 2014 Lake Ewauna Trail Level 2 Preliminary Site Investigation Photograph B 13. Shallow soil sample location SE 13 (3/6/2014). Location is adjacent to wetland removal fill area. Photograph B 14. Shallow soil sample location SE 14 (3/6/2014). Photograph B 15. Shallow soil sample location SE 15 (3/6/2014). Photograph B 16. Shallow soil sample location SE 16 (3/6/2014).

29 Appendix B Representative Shallow Soil Sampling Photographs March 2014 Lake Ewauna Trail Level 2 Preliminary Site Investigation Photograph B 17. Shallow soil sample location SE 17 (3/6/2014).

30 Appendix C Laboratory Reports

31 ANALYTICAL REPORT For: Klamath Lake Ewauna ASL Report #: N1415 Project ID: Attn: Darren Hippenstiel/PDX cc: Bruce Pratt/CVO Pat Heins/PDX Authorized and Released By: Laboratory Project Manager Kathy McKinley (541) ext April 01, 2014 All analyses performed by CH2M HILL are clearly indicated. Any subcontracted analyses are included as appended reports as received from the subcontracted laboratory. The results included in this report only relate to the samples listed on the following Sample Cross Reference page. This report shall not be reproduced except in full, without the written approval of the laboratory. Any unusual difficulties encountered during the analysis of your samples are discussed in the attached case narratives. Accredited in accordance with NELAP: Oregon (100022) Arizona (0771) Louisiana (05031) Page 1 of 74

32 ASL Report #: N1415 Sample Receipt Comments We certify that the test results meet all NELAP requirements. Sample Cross Reference ASL Sample ID Client Sample ID /Time Collected Received N SE 1 03/06/14 14:57 03/07/14 N SE 2 03/06/14 15:18 03/07/14 N SE 3 03/06/14 15:33 03/07/14 N SE 4 03/06/14 13:22 03/07/14 N SE 5 03/06/14 13:40 03/07/14 N SE 6 03/06/14 16:45 03/07/14 N SE 7 03/06/14 16:30 03/07/14 N SE 8 03/06/14 16:10 03/07/14 N SE 9 03/06/14 11:55 03/07/14 N SE 10 03/06/14 11:36 03/07/14 N SE 11 03/06/14 11:20 03/07/14 N SE 12 03/06/14 10:48 03/07/14 N SE 13 03/06/14 10:20 03/07/14 N SE 14 03/06/14 09:55 03/07/14 N SE 15 03/06/14 09:00 03/07/14 N SE 16 03/06/14 08:28 03/07/14 N SE 17 03/06/14 08:00 03/07/14 Page 2 of 74

33 CASE NARRATIVE GC/MS SEMI-VOLATILES ANALYSIS Lab Name: ASL SDG#: N1415 Project: Klamath--Lake Ewauna Project #: With the exceptions noted as flags, footnotes, or detailed in the section below; standard operating procedures were followed in the analysis of the samples and no problems were encountered or anomalies observed. All laboratory quality control samples were within established control limits, with any exceptions noted below, or in the associated QC summary forms. Each sample was analyzed to achieve the lowest possible reporting limit within the constraints of the method. For diluted samples, the reporting limits are adjusted for the dilution required. Calculations are performed before rounding to minimize errors in calculated values. All holding times were met and proper preservation noted for the methods performed on these samples, unless otherwise detailed in the section below, or in the sample receipt documentation. (s): SW8270C-SIM: SW3550 Surrogate Standard(s): Surrogate recovery of Terphenyl-d14(153%) in SE-5 did not meet acceptance criteria of %. Analytical Exception(s): Multi-incremental sampling was performed on N and N Many samples required dilutions due to heavy matrix interferences. Page 3 of 74 TH :02-N1415-S

34 Client Sample ID: SE-1 Sample : 03/06/14 Sample Time: 14:57 Type: Grab Lab Sample ID: N Received: 03/07/14 Dilution Factor: 1 Report Revision No.: 0 Analyte CAS# Sample Qualifier GC/MS Semi-Volatiles Naphthalene Methylnaphthalene U 1-Methylnaphthalene U Acenaphthylene J Acenaphthene U Dibenzofuran U Fluorene U Pentachlorophenol Phenanthrene J Anthracene J Fluoranthene Pyrene Benzo(a)anthracene Chrysene Benzo[b]fluoranthene Benzo(k)fluoranthene Benzo(a)pyrene Indeno(1,2,3-c,d)pyrene Dibenzo(a,h)anthracene U Benzo(g,h,i)perylene Surrogate Terphenyl-d14 % Recovery Control Limits Qualifier HM :50-N1415-S Page 4 of 74

35 Client Sample ID: SE-2 Sample : 03/06/14 Sample Time: 15:18 Type: Grab Lab Sample ID: N Received: 03/07/14 Dilution Factor: 1 Report Revision No.: 0 Analyte CAS# Sample Qualifier GC/MS Semi-Volatiles Naphthalene Methylnaphthalene Methylnaphthalene Acenaphthylene Acenaphthene Dibenzofuran Fluorene Pentachlorophenol Phenanthrene Anthracene Fluoranthene Pyrene Benzo(a)anthracene Chrysene Benzo[b]fluoranthene Benzo(k)fluoranthene Benzo(a)pyrene Indeno(1,2,3-c,d)pyrene Dibenzo(a,h)anthracene Benzo(g,h,i)perylene Surrogate Terphenyl-d14 % Recovery Control Limits Qualifier HM :50-N1415-S Page 5 of 74

36 Client Sample ID: SE-3 Sample : 03/06/14 Sample Time: 15:33 Type: Grab Lab Sample ID: N Received: 03/07/14 Dilution Factor: 1 Report Revision No.: 0 Analyte CAS# Sample Qualifier GC/MS Semi-Volatiles Naphthalene Methylnaphthalene J 1-Methylnaphthalene U Acenaphthylene U Acenaphthene J Dibenzofuran J Fluorene J Pentachlorophenol J Phenanthrene Anthracene Fluoranthene Pyrene Benzo(a)anthracene Chrysene Benzo[b]fluoranthene Benzo(k)fluoranthene Benzo(a)pyrene Indeno(1,2,3-c,d)pyrene Dibenzo(a,h)anthracene U Benzo(g,h,i)perylene Surrogate Terphenyl-d14 % Recovery Control Limits Qualifier HM :50-N1415-S Page 6 of 74

37 Client Sample ID: SE-4 Sample : 03/06/14 Sample Time: 13:22 Type: Grab Lab Sample ID: N Received: 03/07/14 Dilution Factor: 5 Report Revision No.: 0 Analyte CAS# Sample Qualifier GC/MS Semi-Volatiles Naphthalene Methylnaphthalene Methylnaphthalene Acenaphthylene Acenaphthene Dibenzofuran Fluorene Pentachlorophenol Phenanthrene Anthracene Fluoranthene Pyrene Benzo(a)anthracene Chrysene Benzo[b]fluoranthene Benzo(k)fluoranthene Benzo(a)pyrene Indeno(1,2,3-c,d)pyrene Dibenzo(a,h)anthracene U Benzo(g,h,i)perylene Surrogate Terphenyl-d14 % Recovery Control Limits Qualifier HM :50-N1415-S Page 7 of 74

38 Client Sample ID: SE-5 Sample : 03/06/14 Sample Time: 13:40 Type: Grab Lab Sample ID: N Received: 03/07/14 Dilution Factor: 10 Report Revision No.: 0 Analyte CAS# Sample Qualifier GC/MS Semi-Volatiles Naphthalene Methylnaphthalene Methylnaphthalene Acenaphthylene Acenaphthene Dibenzofuran Fluorene Pentachlorophenol U Phenanthrene Anthracene Fluoranthene Pyrene Benzo(a)anthracene Chrysene Benzo[b]fluoranthene Benzo(k)fluoranthene Benzo(a)pyrene Indeno(1,2,3-c,d)pyrene Dibenzo(a,h)anthracene Benzo(g,h,i)perylene Surrogate Terphenyl-d14 % Recovery Control Limits Qualifier * HM :50-N1415-S Page 8 of 74

39 Client Sample ID: SE-6 Sample : 03/06/14 Sample Time: 16:45 Type: Grab Lab Sample ID: N Received: 03/07/14 Dilution Factor: 10 Report Revision No.: 0 Analyte CAS# Sample Qualifier GC/MS Semi-Volatiles Naphthalene Methylnaphthalene J 1-Methylnaphthalene J Acenaphthylene Acenaphthene U Dibenzofuran J Fluorene J Pentachlorophenol U Phenanthrene Anthracene J Fluoranthene Pyrene Benzo(a)anthracene Chrysene Benzo[b]fluoranthene Benzo(k)fluoranthene J Benzo(a)pyrene Indeno(1,2,3-c,d)pyrene Dibenzo(a,h)anthracene U Benzo(g,h,i)perylene Surrogate Terphenyl-d14 % Recovery Control Limits Qualifier HM :50-N1415-S Page 9 of 74

40 Client Sample ID: SE-7 Sample : 03/06/14 Sample Time: 16:30 Type: Grab Lab Sample ID: N Received: 03/07/14 Dilution Factor: 10 Report Revision No.: 0 Analyte CAS# Sample Qualifier GC/MS Semi-Volatiles Naphthalene Methylnaphthalene Methylnaphthalene J Acenaphthylene Acenaphthene U Dibenzofuran J Fluorene J Pentachlorophenol U Phenanthrene Anthracene Fluoranthene Pyrene Benzo(a)anthracene Chrysene Benzo[b]fluoranthene Benzo(k)fluoranthene Benzo(a)pyrene Indeno(1,2,3-c,d)pyrene Dibenzo(a,h)anthracene U Benzo(g,h,i)perylene Surrogate Terphenyl-d14 % Recovery Control Limits Qualifier HM :50-N1415-S Page 10 of 74

41 Client Sample ID: SE-8 Sample : 03/06/14 Sample Time: 16:10 Type: Grab Lab Sample ID: N Received: 03/07/14 Dilution Factor: 5 Report Revision No.: 0 Analyte CAS# Sample Qualifier GC/MS Semi-Volatiles Naphthalene Methylnaphthalene J 1-Methylnaphthalene J Acenaphthylene J Acenaphthene U Dibenzofuran J Fluorene J Pentachlorophenol U Phenanthrene Anthracene Fluoranthene Pyrene Benzo(a)anthracene J Chrysene J Benzo[b]fluoranthene Benzo(k)fluoranthene J Benzo(a)pyrene J Indeno(1,2,3-c,d)pyrene U Dibenzo(a,h)anthracene U Benzo(g,h,i)perylene Surrogate Terphenyl-d14 % Recovery Control Limits Qualifier HM :50-N1415-S Page 11 of 74

42 Client Sample ID: SE-9 Sample : 03/06/14 Sample Time: 11:55 Type: Grab Lab Sample ID: N Received: 03/07/14 Dilution Factor: 5 Report Revision No.: 0 Analyte CAS# Sample Qualifier GC/MS Semi-Volatiles Naphthalene Methylnaphthalene J 1-Methylnaphthalene J Acenaphthylene Acenaphthene U Dibenzofuran J Fluorene J Pentachlorophenol U Phenanthrene Anthracene Fluoranthene Pyrene Benzo(a)anthracene Chrysene Benzo[b]fluoranthene Benzo(k)fluoranthene Benzo(a)pyrene Indeno(1,2,3-c,d)pyrene Dibenzo(a,h)anthracene U Benzo(g,h,i)perylene Surrogate Terphenyl-d14 % Recovery Control Limits Qualifier HM :50-N1415-S Page 12 of 74

43 Client Sample ID: SE-10 Sample : 03/06/14 Sample Time: 11:36 Type: Grab Lab Sample ID: N Received: 03/07/14 Dilution Factor: 5 Report Revision No.: 0 Analyte CAS# Sample Qualifier GC/MS Semi-Volatiles Naphthalene J 2-Methylnaphthalene J 1-Methylnaphthalene U Acenaphthylene J Acenaphthene U Dibenzofuran J Fluorene J Pentachlorophenol U Phenanthrene Anthracene J Fluoranthene Pyrene Benzo(a)anthracene J Chrysene J Benzo[b]fluoranthene J Benzo(k)fluoranthene U Benzo(a)pyrene U Indeno(1,2,3-c,d)pyrene J Dibenzo(a,h)anthracene U Benzo(g,h,i)perylene U Surrogate Terphenyl-d14 % Recovery Control Limits Qualifier HM :50-N1415-S Page 13 of 74

44 Client Sample ID: SE-11 Sample : 03/06/14 Sample Time: 11:20 Type: Grab Lab Sample ID: N Received: 03/07/14 Dilution Factor: 5 Report Revision No.: 0 Analyte CAS# Sample Qualifier GC/MS Semi-Volatiles Naphthalene J 2-Methylnaphthalene J 1-Methylnaphthalene J Acenaphthylene J Acenaphthene U Dibenzofuran J Fluorene U Pentachlorophenol U Phenanthrene Anthracene J Fluoranthene J Pyrene Benzo(a)anthracene U Chrysene J Benzo[b]fluoranthene U Benzo(k)fluoranthene U Benzo(a)pyrene U Indeno(1,2,3-c,d)pyrene U Dibenzo(a,h)anthracene U Benzo(g,h,i)perylene U Surrogate Terphenyl-d14 % Recovery Control Limits Qualifier HM :50-N1415-S Page 14 of 74

45 Client Sample ID: SE-12 Sample : 03/06/14 Sample Time: 10:48 Type: Grab Lab Sample ID: N Received: 03/07/14 Dilution Factor: 1 Report Revision No.: 0 Analyte CAS# Sample Qualifier GC/MS Semi-Volatiles Naphthalene J 2-Methylnaphthalene J 1-Methylnaphthalene U Acenaphthylene J Acenaphthene U Dibenzofuran U Fluorene J Pentachlorophenol J Phenanthrene J Anthracene J Fluoranthene J Pyrene Benzo(a)anthracene U Chrysene U Benzo[b]fluoranthene Benzo(k)fluoranthene U Benzo(a)pyrene Indeno(1,2,3-c,d)pyrene U Dibenzo(a,h)anthracene U Benzo(g,h,i)perylene Surrogate Terphenyl-d14 % Recovery Control Limits Qualifier HM :50-N1415-S Page 15 of 74

46 Client Sample ID: SE-13 Sample : 03/06/14 Sample Time: 10:20 Type: Grab Lab Sample ID: N Received: 03/07/14 Dilution Factor: 10 Report Revision No.: 0 Analyte CAS# Sample Qualifier GC/MS Semi-Volatiles Naphthalene Methylnaphthalene Methylnaphthalene J Acenaphthylene Acenaphthene U Dibenzofuran J Fluorene J Pentachlorophenol U Phenanthrene Anthracene J Fluoranthene Pyrene Benzo(a)anthracene Chrysene Benzo[b]fluoranthene Benzo(k)fluoranthene U Benzo(a)pyrene Indeno(1,2,3-c,d)pyrene Dibenzo(a,h)anthracene U Benzo(g,h,i)perylene Surrogate Terphenyl-d14 % Recovery Control Limits Qualifier HM :50-N1415-S Page 16 of 74

47 Client Sample ID: SE-14 Sample : 03/06/14 Sample Time: 09:55 Type: Grab Lab Sample ID: N Received: 03/07/14 Dilution Factor: 5 Report Revision No.: 0 Analyte CAS# Sample Qualifier GC/MS Semi-Volatiles Naphthalene J 2-Methylnaphthalene J 1-Methylnaphthalene J Acenaphthylene J Acenaphthene U Dibenzofuran J Fluorene J Pentachlorophenol J Phenanthrene Anthracene J Fluoranthene Pyrene Benzo(a)anthracene J Chrysene J Benzo[b]fluoranthene Benzo(k)fluoranthene J Benzo(a)pyrene J Indeno(1,2,3-c,d)pyrene U Dibenzo(a,h)anthracene U Benzo(g,h,i)perylene J Surrogate Terphenyl-d14 % Recovery Control Limits Qualifier HM :50-N1415-S Page 17 of 74

48 Client Sample ID: SE-15 Sample : 03/06/14 Sample Time: 09:00 Type: Grab Lab Sample ID: N Received: 03/07/14 Dilution Factor: 10 Report Revision No.: 0 Analyte CAS# Sample Qualifier GC/MS Semi-Volatiles Naphthalene J 2-Methylnaphthalene J 1-Methylnaphthalene J Acenaphthylene J Acenaphthene U Dibenzofuran J Fluorene J Pentachlorophenol U Phenanthrene Anthracene J Fluoranthene Pyrene Benzo(a)anthracene Chrysene Benzo[b]fluoranthene Benzo(k)fluoranthene Benzo(a)pyrene Indeno(1,2,3-c,d)pyrene J Dibenzo(a,h)anthracene U Benzo(g,h,i)perylene Surrogate Terphenyl-d14 % Recovery Control Limits Qualifier HM :50-N1415-S Page 18 of 74

49 Client Sample ID: SE-16 Sample : 03/06/14 Sample Time: 08:28 Type: Grab Lab Sample ID: N Received: 03/07/14 Dilution Factor: 5 Report Revision No.: 0 Analyte CAS# Sample Qualifier GC/MS Semi-Volatiles Naphthalene Methylnaphthalene Methylnaphthalene J Acenaphthylene Acenaphthene J Dibenzofuran J Fluorene J Pentachlorophenol U Phenanthrene Anthracene Fluoranthene Pyrene Benzo(a)anthracene Chrysene Benzo[b]fluoranthene Benzo(k)fluoranthene Benzo(a)pyrene Indeno(1,2,3-c,d)pyrene Dibenzo(a,h)anthracene U Benzo(g,h,i)perylene Surrogate Terphenyl-d14 % Recovery Control Limits Qualifier HM :50-N1415-S Page 19 of 74

50 Client Sample ID: SE-17 Sample : 03/06/14 Sample Time: 08:00 Type: Grab Lab Sample ID: N Received: 03/07/14 Dilution Factor: 5 Report Revision No.: 0 Analyte CAS# Sample Qualifier GC/MS Semi-Volatiles Naphthalene Methylnaphthalene Methylnaphthalene Acenaphthylene Acenaphthene Dibenzofuran Fluorene Pentachlorophenol U Phenanthrene Anthracene Fluoranthene Pyrene Benzo(a)anthracene Chrysene Benzo[b]fluoranthene Benzo(k)fluoranthene Benzo(a)pyrene Indeno(1,2,3-c,d)pyrene Dibenzo(a,h)anthracene Benzo(g,h,i)perylene Surrogate Terphenyl-d14 % Recovery Control Limits Qualifier HM :50-N1415-S Page 20 of 74

51 Client Sample ID: SB Sample : N/A Sample Time: N/A Type: QC Lab Sample ID: SB Received: N/A Dilution Factor: 1 Report Revision No.: 0 Analyte CAS# Sample Qualifier GC/MS Semi-Volatiles Naphthalene U 2-Methylnaphthalene U 1-Methylnaphthalene U Acenaphthylene U Acenaphthene U Dibenzofuran U Fluorene U Pentachlorophenol U Phenanthrene U Anthracene U Fluoranthene U Pyrene U Benzo(a)anthracene U Chrysene U Benzo[b]fluoranthene U Benzo(k)fluoranthene U Benzo(a)pyrene U Indeno(1,2,3-c,d)pyrene U Dibenzo(a,h)anthracene U Benzo(g,h,i)perylene U Surrogate Terphenyl-d14 % Recovery Control Limits Qualifier HM :50-N1415-S Page 21 of 74

52 Client Sample ID: SB Sample : N/A Sample Time: N/A Type: QC Lab Sample ID: SB Received: N/A Dilution Factor: 1 Report Revision No.: 0 Analyte CAS# Sample Qualifier GC/MS Semi-Volatiles Naphthalene U 2-Methylnaphthalene U 1-Methylnaphthalene U Acenaphthylene U Acenaphthene U Dibenzofuran U Fluorene U Pentachlorophenol U Phenanthrene U Anthracene J Fluoranthene U Pyrene U Benzo(a)anthracene U Chrysene U Benzo[b]fluoranthene U Benzo(k)fluoranthene J Benzo(a)pyrene U Indeno(1,2,3-c,d)pyrene U Dibenzo(a,h)anthracene U Benzo(g,h,i)perylene U Surrogate Terphenyl-d14 % Recovery Control Limits Qualifier HM :50-N1415-S Page 22 of 74

53 LCS ID: BS1S0312 Report Revision No.: 0 Type: QC Dilution Factor: 1 Spike Sample Analyte CAS# Amount %Recovery GC/MS Semi-Volatiles Naphthalene ug/kg 86 SW8270C-SI 2-Methylnaphthalene ug/kg 77 SW8270C-SI 1-Methylnaphthalene ug/kg 74 SW8270C-SI Acenaphthylene ug/kg 88 SW8270C-SI Acenaphthene ug/kg 90 SW8270C-SI Dibenzofuran ug/kg 75 SW8270C-SI Fluorene ug/kg 82 SW8270C-SI Pentachlorophenol ug/kg 80 SW8270C-SI Phenanthrene ug/kg 83 SW8270C-SI Anthracene ug/kg 89 SW8270C-SI Fluoranthene ug/kg 99 SW8270C-SI Pyrene ug/kg 94 SW8270C-SI Benzo(a)anthracene ug/kg 94 SW8270C-SI Chrysene ug/kg 91 SW8270C-SI Benzo(b)fluoroanthene ug/kg 87 SW8270C-SI Benzo(k)fluoranthene ug/kg 91 SW8270C-SI Benzo(a)pyrene ug/kg 94 SW8270C-SI Indeno(1,2,3-c,d)pyrene ug/kg 86 SW8270C-SI Dibenzo(a,h)anthracene ug/kg 87 SW8270C-SI Benzo(g,h,i)perylene ug/kg 87 SW8270C-SI Surrogate Terphenyl-d14 % Recovery Control Limits Qualifier HM :50-N1415-S Page 23 of 74

54 LCS ID: BS1S0318 Report Revision No.: 0 Type: QC Dilution Factor: 1 Spike Sample Analyte CAS# Amount %Recovery GC/MS Semi-Volatiles Naphthalene ug/kg 82 SW8270C-SI 2-Methylnaphthalene ug/kg 80 SW8270C-SI 1-Methylnaphthalene ug/kg 76 SW8270C-SI Acenaphthylene ug/kg 93 SW8270C-SI Acenaphthene ug/kg 95 SW8270C-SI Dibenzofuran ug/kg 80 SW8270C-SI Fluorene ug/kg 83 SW8270C-SI Pentachlorophenol ug/kg 91 SW8270C-SI Phenanthrene ug/kg 90 SW8270C-SI Anthracene ug/kg 93 SW8270C-SI Fluoranthene ug/kg 100 SW8270C-SI Pyrene ug/kg 108 SW8270C-SI Benzo(a)anthracene ug/kg 101 SW8270C-SI Chrysene ug/kg 99 SW8270C-SI Benzo(b)fluoroanthene ug/kg 91 SW8270C-SI Benzo(k)fluoranthene ug/kg 96 SW8270C-SI Benzo(a)pyrene ug/kg 94 SW8270C-SI Indeno(1,2,3-c,d)pyrene ug/kg 100 SW8270C-SI Dibenzo(a,h)anthracene ug/kg 102 SW8270C-SI Benzo(g,h,i)perylene ug/kg 99 SW8270C-SI Surrogate Terphenyl-d14 % Recovery Control Limits Qualifier HM :50-N1415-S Page 24 of 74

55 CASE NARRATIVE GC SEMI-VOLATILES ANALYSIS Lab Name: ASL SDG#: N1415 Project: Klamath--Lake Ewauna Project #: With the exceptions noted as flags, footnotes, or detailed in the section below; standard operating procedures were followed in the analysis of the samples and no problems were encountered or anomalies observed. All laboratory quality control samples were within established control limits, with any exceptions noted below, or in the associated QC summary forms. Each sample was analyzed to achieve the lowest possible reporting limit within the constraints of the method. For diluted samples, the reporting limits are adjusted for the dilution required. Calculations are performed before rounding to minimize errors in calculated values. All holding times were met and proper preservation noted for the methods performed on these samples, unless otherwise detailed in the section below, or in the sample receipt documentation. (s): NWTPH-DX: SW3550 Surrogate Standard(s): Surrogate o-terphenyl in SE-5 was diluted out. Surrogate Octacosane in SE-5 was diluted out. Surrogate o-terphenyl in SE-7 was diluted out. Surrogate Octacosane in SE-7 was diluted out. Surrogate o-terphenyl in SE-13 was diluted out. Surrogate Octacosane in SE-13 was diluted out. Analytical Exception(s): Multi-incremental sampling was performed on N and N Page 25 of 74 TH :04-N1415-D

56 Client Sample ID: SE-1 Sample : 03/06/14 Sample Time: 14:57 Type: Grab Lab Sample ID: N Received: 03/07/14 Dilution Factor: 1 Report Revision No.: 0 Analyte CAS# Sample Qualifier GC Semi-Volatiles TPH-Oil TPH-Oil J mg/kg NWTPH-DX TPH-Diesel TPH-Diesel J mg/kg NWTPH-DX 03/17/14 03/17/14 Surrogate % Recovery Control Limits Qualifier o-terphenyl Octacosane CH :06-N1415-D Page 26 of 74

57 Client Sample ID: SE-2 Sample : 03/06/14 Sample Time: 15:18 Type: Grab Lab Sample ID: N Received: 03/07/14 Dilution Factor: 1 Report Revision No.: 0 Analyte CAS# Sample Qualifier GC Semi-Volatiles TPH-Oil TPH-Oil J mg/kg NWTPH-DX TPH-Diesel TPH-Diesel J mg/kg NWTPH-DX 03/17/14 03/17/14 Surrogate % Recovery Control Limits Qualifier o-terphenyl Octacosane CH :06-N1415-D Page 27 of 74

58 Client Sample ID: SE-3 Sample : 03/06/14 Sample Time: 15:33 Type: Grab Lab Sample ID: N Received: 03/07/14 Dilution Factor: 1 Report Revision No.: 0 Analyte CAS# Sample Qualifier GC Semi-Volatiles TPH-Oil TPH-Oil J mg/kg NWTPH-DX TPH-Diesel TPH-Diesel J mg/kg NWTPH-DX 03/17/14 03/17/14 Surrogate % Recovery Control Limits Qualifier o-terphenyl Octacosane CH :06-N1415-D Page 28 of 74

59 Client Sample ID: SE-4 Sample : 03/06/14 Sample Time: 13:22 Type: Grab Lab Sample ID: N Received: 03/07/14 Dilution Factor: 10 Report Revision No.: 0 Analyte CAS# Sample Qualifier GC Semi-Volatiles TPH-Oil TPH-Oil mg/kg NWTPH-DX TPH-Diesel TPH-Diesel J mg/kg NWTPH-DX 03/18/14 03/18/14 Surrogate % Recovery Control Limits Qualifier o-terphenyl Octacosane CH :06-N1415-D Page 29 of 74

60 Client Sample ID: SE-5 Sample : 03/06/14 Sample Time: 13:40 Type: Grab Lab Sample ID: N Received: 03/07/14 Dilution Factor: 50 Report Revision No.: 0 Analyte CAS# Sample Qualifier GC Semi-Volatiles TPH-Oil TPH-Oil mg/kg NWTPH-DX TPH-Diesel TPH-Diesel mg/kg NWTPH-DX 03/18/14 03/18/14 Surrogate % Recovery Control Limits Qualifier o-terphenyl * Octacosane * CH :06-N1415-D Page 30 of 74

61 Client Sample ID: SE-6 Sample : 03/06/14 Sample Time: 16:45 Type: Grab Lab Sample ID: N Received: 03/07/14 Dilution Factor: 1 Report Revision No.: 0 Analyte CAS# Sample Qualifier GC Semi-Volatiles TPH-Oil TPH-Oil J mg/kg NWTPH-DX TPH-Diesel TPH-Diesel J mg/kg NWTPH-DX 03/18/14 03/18/14 Surrogate % Recovery Control Limits Qualifier o-terphenyl Octacosane CH :06-N1415-D Page 31 of 74

62 Client Sample ID: SE-7 Sample : 03/06/14 Sample Time: 16:30 Type: Grab Lab Sample ID: N Received: 03/07/14 Dilution Factor: 20 Report Revision No.: 0 Analyte CAS# Sample Qualifier GC Semi-Volatiles TPH-Oil TPH-Oil J mg/kg NWTPH-DX TPH-Diesel TPH-Diesel J mg/kg NWTPH-DX 03/18/14 03/18/14 Surrogate % Recovery Control Limits Qualifier o-terphenyl * Octacosane * CH :06-N1415-D Page 32 of 74

63 Client Sample ID: SE-8 Sample : 03/06/14 Sample Time: 16:10 Type: Grab Lab Sample ID: N Received: 03/07/14 Dilution Factor: 1 Report Revision No.: 0 Analyte CAS# Sample Qualifier GC Semi-Volatiles TPH-Oil TPH-Oil J mg/kg NWTPH-DX TPH-Diesel TPH-Diesel J mg/kg NWTPH-DX 03/18/14 03/18/14 Surrogate % Recovery Control Limits Qualifier o-terphenyl Octacosane CH :06-N1415-D Page 33 of 74

64 Client Sample ID: SE-9 Sample : 03/06/14 Sample Time: 11:55 Type: Grab Lab Sample ID: N Received: 03/07/14 Dilution Factor: 1 Report Revision No.: 0 Analyte CAS# Sample Qualifier GC Semi-Volatiles TPH-Oil TPH-Oil mg/kg NWTPH-DX TPH-Diesel TPH-Diesel mg/kg NWTPH-DX 03/18/14 03/18/14 Surrogate % Recovery Control Limits Qualifier o-terphenyl Octacosane CH :06-N1415-D Page 34 of 74

65 Client Sample ID: SE-10 Sample : 03/06/14 Sample Time: 11:36 Type: Grab Lab Sample ID: N Received: 03/07/14 Dilution Factor: 1 Report Revision No.: 0 Analyte CAS# Sample Qualifier GC Semi-Volatiles TPH-Oil TPH-Oil mg/kg NWTPH-DX TPH-Diesel TPH-Diesel mg/kg NWTPH-DX 03/18/14 03/18/14 Surrogate % Recovery Control Limits Qualifier o-terphenyl Octacosane CH :06-N1415-D Page 35 of 74

66 Client Sample ID: SE-11 Sample : 03/06/14 Sample Time: 11:20 Type: Grab Lab Sample ID: N Received: 03/07/14 Dilution Factor: 1 Report Revision No.: 0 Analyte CAS# Sample Qualifier GC Semi-Volatiles TPH-Oil TPH-Oil mg/kg NWTPH-DX TPH-Diesel TPH-Diesel mg/kg NWTPH-DX 03/18/14 03/18/14 Surrogate % Recovery Control Limits Qualifier o-terphenyl Octacosane CH :06-N1415-D Page 36 of 74

67 Client Sample ID: SE-12 Sample : 03/06/14 Sample Time: 10:48 Type: Grab Lab Sample ID: N Received: 03/07/14 Dilution Factor: 1 Report Revision No.: 0 Analyte CAS# Sample Qualifier GC Semi-Volatiles TPH-Oil TPH-Oil mg/kg NWTPH-DX TPH-Diesel TPH-Diesel J mg/kg NWTPH-DX 03/18/14 03/18/14 Surrogate % Recovery Control Limits Qualifier o-terphenyl Octacosane CH :06-N1415-D Page 37 of 74

68 Client Sample ID: SE-13 Sample : 03/06/14 Sample Time: 10:20 Type: Grab Lab Sample ID: N Received: 03/07/14 Dilution Factor: 20 Report Revision No.: 0 Analyte CAS# Sample Qualifier GC Semi-Volatiles TPH-Oil TPH-Oil J mg/kg NWTPH-DX TPH-Diesel TPH-Diesel J mg/kg NWTPH-DX 03/18/14 03/18/14 Surrogate % Recovery Control Limits Qualifier o-terphenyl * Octacosane * CH :06-N1415-D Page 38 of 74

69 Client Sample ID: SE-14 Sample : 03/06/14 Sample Time: 09:55 Type: Grab Lab Sample ID: N Received: 03/07/14 Dilution Factor: 1 Report Revision No.: 0 Analyte CAS# Sample Qualifier GC Semi-Volatiles TPH-Oil TPH-Oil mg/kg NWTPH-DX TPH-Diesel TPH-Diesel J mg/kg NWTPH-DX 03/18/14 03/18/14 Surrogate % Recovery Control Limits Qualifier o-terphenyl Octacosane CH :06-N1415-D Page 39 of 74

70 Client Sample ID: SE-15 Sample : 03/06/14 Sample Time: 09:00 Type: Grab Lab Sample ID: N Received: 03/07/14 Dilution Factor: 1 Report Revision No.: 0 Analyte CAS# Sample Qualifier GC Semi-Volatiles TPH-Oil TPH-Oil mg/kg NWTPH-DX TPH-Diesel TPH-Diesel J mg/kg NWTPH-DX 03/18/14 03/18/14 Surrogate % Recovery Control Limits Qualifier o-terphenyl Octacosane CH :06-N1415-D Page 40 of 74

71 Client Sample ID: SE-16 Sample : 03/06/14 Sample Time: 08:28 Type: Grab Lab Sample ID: N Received: 03/07/14 Dilution Factor: 1 Report Revision No.: 0 Analyte CAS# Sample Qualifier GC Semi-Volatiles TPH-Oil TPH-Oil J mg/kg NWTPH-DX TPH-Diesel TPH-Diesel J mg/kg NWTPH-DX 03/18/14 03/18/14 Surrogate % Recovery Control Limits Qualifier o-terphenyl Octacosane CH :06-N1415-D Page 41 of 74

72 Client Sample ID: SE-17 Sample : 03/06/14 Sample Time: 08:00 Type: Grab Lab Sample ID: N Received: 03/07/14 Dilution Factor: 1 Report Revision No.: 0 Analyte CAS# Sample Qualifier GC Semi-Volatiles TPH-Oil TPH-Oil J mg/kg NWTPH-DX TPH-Diesel TPH-Diesel J mg/kg NWTPH-DX 03/18/14 03/18/14 Surrogate % Recovery Control Limits Qualifier o-terphenyl Octacosane CH :06-N1415-D Page 42 of 74

73 Client Sample ID: SB Sample : N/A Sample Time: N/A Type: QC Lab Sample ID: SB Received: N/A Dilution Factor: 1 Report Revision No.: 0 Analyte CAS# Sample Qualifier GC Semi-Volatiles TPH-Oil TPH-Oil U mg/kg NWTPH-DX TPH-Diesel TPH-Diesel J mg/kg NWTPH-DX 03/17/14 03/17/14 Surrogate % Recovery Control Limits Qualifier o-terphenyl Octacosane CH :06-N1415-D Page 43 of 74

74 LCS ID: BS1S0314 Report Revision No.: 0 Type: QC Dilution Factor: 1 Spike Sample Analyte CAS# Amount %Recovery GC Semi-Volatiles TPH-Diesel TPH-Diesel mg/kg 67 NWTPH-DX 03/17/14 Surrogate % Recovery Control Limits Qualifier o-terphenyl Octacosane CH :06-N1415-D Page 44 of 74

75 LCS ID: BS2S0314 Report Revision No.: 0 Type: QC Dilution Factor: 1 Spike Sample Analyte CAS# Amount %Recovery GC Semi-Volatiles TPH-Oil TPH-Oil mg/kg 71 NWTPH-DX 03/17/14 Surrogate % Recovery Control Limits Qualifier o-terphenyl Octacosane CH :06-N1415-D Page 45 of 74

76 CASE NARRATIVE METALS ANALYSIS Lab Name: ASL SDG#: N1415 Project: Klamath--Lake Ewauna Project #: With the exceptions noted as flags, footnotes, or detailed in the section below; standard operating procedures were followed in the analysis of the samples and no problems were encountered or anomalies observed. All laboratory quality control samples were within established control limits, with any exceptions noted below, or in the associated QC summary forms. Each sample was analyzed to achieve the lowest possible reporting limit within the constraints of the method. For diluted samples, the reporting limits are adjusted for the dilution required. Calculations are performed before rounding to minimize errors in calculated values. All holding times were met and proper preservation noted for the methods performed on these samples, unless otherwise detailed in the section below, or in the sample receipt documentation. (s): SW6020: SW3050 SW7471A Analytical Exception(s): SW6020: Client samples required dilution. Internal standards failed at lower dilutions. Multi-incremental sampling was performed on N and N SW7471A: Multi-incremental sampling was performed on N and N Page 46 of 74 JG :01-N1415-M

77 Client Sample ID: SE-1 Lab Sample ID: N Sample : 03/06/14 Sample Time: 14:57 Type: Grab Received: 03/07/14 Report Revision No: 0 Analyte Metals Dilution Factor Qual Prep Arsenic J Barium Cadmium U Chromium Lead Mercury J mg/kg SW7471A METHOD Selenium J Silver J 03/12/14 JG :01-N1415-M Page 47 of 74

78 Client Sample ID: SE-2 Lab Sample ID: N Sample : 03/06/14 Sample Time: 15:18 Type: Grab Received: 03/07/14 Report Revision No: 0 Analyte Metals Dilution Factor Qual Prep Arsenic Barium Cadmium J Chromium Lead Mercury mg/kg SW7471A METHOD Selenium U Silver U 03/12/14 JG :01-N1415-M Page 48 of 74

79 Client Sample ID: SE-3 Lab Sample ID: N Sample : 03/06/14 Sample Time: 15:33 Type: Grab Received: 03/07/14 Report Revision No: 0 Analyte Metals Dilution Factor Qual Prep Arsenic J Barium Cadmium U Chromium Lead J Mercury mg/kg SW7471A METHOD Selenium U Silver U 03/12/14 JG :01-N1415-M Page 49 of 74

80 Client Sample ID: SE-4 Lab Sample ID: N Sample : 03/06/14 Sample Time: 13:22 Type: Grab Received: 03/07/14 Report Revision No: 0 Analyte Metals Dilution Factor Qual Prep Arsenic Barium Cadmium Chromium Lead Mercury mg/kg SW7471A METHOD Selenium J Silver J 03/21/14 03/21/14 03/21/14 03/21/14 03/21/14 03/19/14 03/21/14 03/21/14 JG :01-N1415-M Page 50 of 74

81 Client Sample ID: SE-5 Lab Sample ID: N Sample : 03/06/14 Sample Time: 13:40 Type: Grab Received: 03/07/14 Report Revision No: 0 Analyte Metals Dilution Factor Qual Prep Arsenic Barium Cadmium Chromium Lead Mercury mg/kg SW7471A METHOD Selenium J Silver J 03/21/14 03/21/14 03/21/14 03/21/14 03/21/14 03/19/14 03/21/14 03/21/14 JG :01-N1415-M Page 51 of 74

82 Client Sample ID: SE-6 Lab Sample ID: N Sample : 03/06/14 Sample Time: 16:45 Type: Grab Received: 03/07/14 Report Revision No: 0 Analyte Metals Dilution Factor Qual Prep Arsenic Barium Cadmium J Chromium Lead Mercury mg/kg SW7471A METHOD Selenium U Silver U 03/12/14 JG :01-N1415-M Page 52 of 74

83 Client Sample ID: SE-7 Lab Sample ID: N Sample : 03/06/14 Sample Time: 16:30 Type: Grab Received: 03/07/14 Report Revision No: 0 Analyte Metals Dilution Factor Qual Prep Arsenic Barium Cadmium J Chromium Lead Mercury mg/kg SW7471A METHOD Selenium J Silver U 03/12/14 JG :01-N1415-M Page 53 of 74

84 Client Sample ID: SE-8 Lab Sample ID: N Sample : 03/06/14 Sample Time: 16:10 Type: Grab Received: 03/07/14 Report Revision No: 0 Analyte Metals Dilution Factor Qual Prep Arsenic J Barium Cadmium U Chromium Lead Mercury mg/kg SW7471A METHOD Selenium U Silver U 03/12/14 JG :01-N1415-M Page 54 of 74

85 Client Sample ID: SE-9 Lab Sample ID: N Sample : 03/06/14 Sample Time: 11:55 Type: Grab Received: 03/07/14 Report Revision No: 0 Analyte Metals Dilution Factor Qual Prep Arsenic Barium Cadmium J Chromium Lead Mercury mg/kg SW7471A METHOD Selenium J Silver U 03/12/14 JG :01-N1415-M Page 55 of 74

86 Client Sample ID: SE-10 Lab Sample ID: N Sample : 03/06/14 Sample Time: 11:36 Type: Grab Received: 03/07/14 Report Revision No: 0 Analyte Metals Dilution Factor Qual Prep Arsenic J Barium Cadmium J Chromium Lead Mercury J mg/kg SW7471A METHOD Selenium J Silver U 03/12/14 JG :01-N1415-M Page 56 of 74

87 Client Sample ID: SE-11 Lab Sample ID: N Sample : 03/06/14 Sample Time: 11:20 Type: Grab Received: 03/07/14 Report Revision No: 0 Analyte Metals Dilution Factor Qual Prep Arsenic J Barium Cadmium J Chromium Lead Mercury J mg/kg SW7471A METHOD Selenium J Silver U 03/12/14 JG :01-N1415-M Page 57 of 74

88 Client Sample ID: SE-12 Lab Sample ID: N Sample : 03/06/14 Sample Time: 10:48 Type: Grab Received: 03/07/14 Report Revision No: 0 Analyte Metals Dilution Factor Qual Prep Arsenic Barium Cadmium J Chromium Lead Mercury J mg/kg SW7471A METHOD Selenium U Silver U 03/12/14 JG :01-N1415-M Page 58 of 74

89 Client Sample ID: SE-13 Lab Sample ID: N Sample : 03/06/14 Sample Time: 10:20 Type: Grab Received: 03/07/14 Report Revision No: 0 Analyte Metals Dilution Factor Qual Prep Arsenic Barium Cadmium J Chromium Lead Mercury mg/kg SW7471A METHOD Selenium U Silver U 03/21/14 03/21/14 03/21/14 03/21/14 03/21/14 03/12/14 03/21/14 03/21/14 JG :01-N1415-M Page 59 of 74

90 Client Sample ID: SE-14 Lab Sample ID: N Sample : 03/06/14 Sample Time: 09:55 Type: Grab Received: 03/07/14 Report Revision No: 0 Analyte Metals Dilution Factor Qual Prep Arsenic J Barium Cadmium J Chromium Lead Mercury mg/kg SW7471A METHOD Selenium J Silver U 03/12/14 JG :01-N1415-M Page 60 of 74

91 Client Sample ID: SE-15 Lab Sample ID: N Sample : 03/06/14 Sample Time: 09:00 Type: Grab Received: 03/07/14 Report Revision No: 0 Analyte Metals Dilution Factor Qual Prep Arsenic Barium Cadmium J Chromium Lead Mercury mg/kg SW7471A METHOD Selenium J Silver U 03/21/14 03/21/14 03/21/14 03/21/14 03/21/14 03/19/14 03/21/14 03/21/14 JG :01-N1415-M Page 61 of 74

92 Client Sample ID: SE-16 Lab Sample ID: N Sample : 03/06/14 Sample Time: 08:28 Type: Grab Received: 03/07/14 Report Revision No: 0 Analyte Metals Dilution Factor Qual Prep Arsenic Barium Cadmium J Chromium Lead Mercury mg/kg SW7471A METHOD Selenium U Silver U 03/21/14 03/21/14 03/21/14 03/21/14 03/21/14 03/19/14 03/21/14 03/21/14 JG :01-N1415-M Page 62 of 74

93 Client Sample ID: SE-17 Lab Sample ID: N Sample : 03/06/14 Sample Time: 08:00 Type: Grab Received: 03/07/14 Report Revision No: 0 Analyte Metals Dilution Factor Qual Prep Arsenic J Barium Cadmium J Chromium Lead Mercury mg/kg SW7471A METHOD Selenium U Silver J 03/21/14 03/21/14 03/21/14 03/21/14 03/21/14 03/19/14 03/21/14 03/21/14 JG :01-N1415-M Page 63 of 74

94 Blank ID: SB Sample : N/A Sample Time: N/A Type: QC Received: N/A Report Revision No: 0 Analyte Metals Dilution Factor Qual Prep Arsenic U Barium U Cadmium U Chromium J Lead U Mercury U mg/kg SW7471A METHOD Selenium U Silver U 03/12/14 JG :01-N1415-M Page 64 of 74

95 Blank ID: SB Sample : N/A Sample Time: N/A Type: QC Received: N/A Report Revision No: 0 Analyte Metals Dilution Factor Qual Prep Mercury U mg/kg SW7471A METHOD 03/19/14 JG :01-N1415-M Page 65 of 74

96 Blank ID: SB Sample : N/A Sample Time: N/A Type: QC Received: N/A Report Revision No: 0 Analyte Metals Dilution Factor Qual Prep Arsenic U Barium U Cadmium U Chromium U Lead U Selenium U Silver U 03/21/14 03/21/14 03/21/14 03/21/14 03/21/14 03/21/14 03/21/14 JG :01-N1415-M Page 66 of 74

97 Blank Spike ID: BS1S0311 Report Revision No: 0 Type: QC Dilution Factor: 1 Spike Analyte Amount %Recovery Metals Prep Arsenic mg/kg 107 SW6020 SW3050 Barium mg/kg 105 SW6020 SW3050 Cadmium mg/kg 111 SW6020 SW3050 Chromium mg/kg 111 SW6020 SW3050 Lead mg/kg 103 SW6020 SW3050 Mercury mg/kg 93 SW7471A METHOD Selenium mg/kg 111 SW6020 SW3050 Silver mg/kg 101 SW6020 SW /12/14 JG :01-N1415-M Page 67 of 74

98 Blank Spike ID: BS1S0319 Report Revision No: 0 Type: QC Dilution Factor: 1 Spike Analyte Amount %Recovery Metals Prep Mercury mg/kg 102 SW7471A METHOD 03/19/14 JG :01-N1415-M Page 68 of 74

99 Blank Spike ID: BS2S0317 Report Revision No: 0 Type: QC Dilution Factor: 1 Spike Analyte Amount %Recovery Metals Prep Arsenic mg/kg 101 SW6020 SW3050 Barium mg/kg 100 SW6020 SW3050 Cadmium mg/kg 102 SW6020 SW3050 Chromium mg/kg 99 SW6020 SW3050 Lead mg/kg 99 SW6020 SW3050 Selenium mg/kg 100 SW6020 SW3050 Silver mg/kg 95 SW6020 SW /21/14 03/21/14 03/21/14 03/21/14 03/21/14 03/21/14 03/21/14 JG :01-N1415-M Page 69 of 74

100 CASE NARRATIVE GENERAL CHEMISTRY ANALYSIS Lab Name: ASL SDG#: N1415 Project: Klamath--Lake Ewauna Project #: With the exceptions noted as flags, footnotes, or detailed in the section below; standard operating procedures were followed in the analysis of the samples and no problems were encountered or anomalies observed. All laboratory quality control samples were within established control limits, with any exceptions noted below, or in the associated QC summary forms. Each sample was analyzed to achieve the lowest possible reporting limit within the constraints of the method. For diluted samples, the reporting limits are adjusted for the dilution required. Calculations are performed before rounding to minimize errors in calculated values. All holding times were met and proper preservation noted for the methods performed on these samples, unless otherwise detailed in the section below, or in the sample receipt documentation. (s): SM2540G Page 70 of 74 BS :30-N1415-W

101 Received: 03/07/14 Type: See C.O.C. Lab Batch ID: N1415 : SM2540G : Percent Report Revision No.: 0 Client Sample ID General Chemistry Lab Sample ID Dilution Factor Moisture Qualifier SE-1 N N/A N/A /11/14 SE-2 N N/A N/A /11/14 SE-3 N N/A N/A /11/14 SE-4 N N/A N/A /12/14 SE-5 N N/A N/A /12/14 SE-6 N N/A N/A /11/14 SE-7 N N/A N/A /11/14 SE-8 N N/A N/A /11/14 SE-9 N N/A N/A /11/14 SE-10 N N/A N/A /11/14 SE-11 N N/A N/A /11/14 SE-12 N N/A N/A /11/14 SE-13 N N/A N/A /11/14 SE-14 N N/A N/A /11/14 SE-15 N N/A N/A /11/14 SE-16 N N/A N/A /11/14 SE-17 N N/A N/A /11/14 BS :30-N1415-W Page 71 of 74

102 Page 72 of 74

103 CH2M HILL Applied Sciences Laboratory (ASL) 1100 NE Circle Blvd, Suite 300 Tel Amended Report : 04/18/14 Client: Klamath Lake Ewauna SDG No.: N1415 Project/Task: Revision No.: 1 Completed by: K. Fordyce Affected (s): SW3010A/SW6010 Approved by: KM Amendment(s) Completed and Reason(s): Additional analyses requested by client. Amendment(s) Justification: X Reporting error Calculation error Missing information/data Wrong information/data Analytical problem/correction Client change/request Subcontracted laboratory error Other (define) Edata Required: X Yes No G:\ASLRTool\PDF_Fractions\N1415\N1415-M-AR.docx Doc Control ID: ASL

104 ANALYTICAL REPORT For: Klamath Lake Ewauna ASL Report #: N1415 Project ID: Attn: Darren Hippenstiel/PDX cc: Bruce Pratt/CVO Pat Heins/PDX Authorized and Released By: Laboratory Project Manager Kathy McKinley (541) ext April 18, 2014 All analyses performed by CH2M HILL are clearly indicated. Any subcontracted analyses are included as appended reports as received from the subcontracted laboratory. The results included in this report only relate to the samples listed on the following Sample Cross Reference page. This report shall not be reproduced except in full, without the written approval of the laboratory. Any unusual difficulties encountered during the analysis of your samples are discussed in the attached case narratives. Accredited in accordance with NELAP: Oregon (100022) Arizona (0771) Louisiana (05031) Page 1 of 10

105 ASL Report #: N1415 Sample Receipt Comments We certify that the test results meet all NELAP requirements. Sample Cross Reference ASL Sample ID Client Sample ID /Time Collected Received N SE 1 03/06/14 14:57 03/07/14 N SE 2 03/06/14 15:18 03/07/14 N SE 3 03/06/14 15:33 03/07/14 N SE 4 03/06/14 13:22 03/07/14 N SE 5 03/06/14 13:40 03/07/14 N SE 6 03/06/14 16:45 03/07/14 N SE 7 03/06/14 16:30 03/07/14 N SE 8 03/06/14 16:10 03/07/14 N SE 9 03/06/14 11:55 03/07/14 N SE 10 03/06/14 11:36 03/07/14 N SE 11 03/06/14 11:20 03/07/14 N SE 12 03/06/14 10:48 03/07/14 N SE 13 03/06/14 10:20 03/07/14 N SE 14 03/06/14 09:55 03/07/14 N SE 15 03/06/14 09:00 03/07/14 N SE 16 03/06/14 08:28 03/07/14 N SE 17 03/06/14 08:00 03/07/14 Page 2 of 10

106 Page 3 of 10