FINAL REPORT. Environmental Monitoring Services during the Underground Storage Tank Removal at Fire Hall # Nicola Street

Transcription

1 FINAL REPORT Environmental Monitoring Services during the Underground Storage Tank Removal at Fire Hall # Nicola Street Prepared for: City of Vancouver 453 West 12 th Avenue Vancouver, BC V5Y 1V4 Prepared by: Hemmera Suite Burrard Street Vancouver, BC V6Z 2H3 May 2013 File:

2 City of Vancouver Hemmera UST Removal at Fire Hall #6, 1001 Nicola Street - i - May 2013 TABLE OF CONTENTS 1.0 INTRODUCTION OBJECTIVE APPLICABLE ENVIRONMENTAL QUALITY GUIDELINES / STANDARDS INVESTIGATION METHODOLOGY HEALTH AND SAFETY TANK DECOMMISSIONING RESULTS SOIL STRATIGRAPHY SOIL ANALYTICAL RESULTS DISCUSSION OF INVESTIGATION PROGRAM CONCLUSIONS STATEMENT OF LIMITATIONS REFERENCES... 7 List of Tables (within text) Table 4.1 Summary of Soil Stratigraphy... 3 List of Figures (following text) Figure 1 Figure 2 Site Location UST Excavation and Soil Results List of Tables (following text) Table 1 Soil Analytical Results List of Appendices Appendix A Appendix B Appendix C Site Photographs Disposal Documentation Certified Analytical Report

3 City of Vancouver Hemmera UST Removal at Fire Hall #6, 1001 Nicola Street May INTRODUCTION The City of Vancouver (CoV) retained Hemmera to provide environmental monitoring services during the excavation and removal of an underground storage tank (UST) at Fire Hall #6 at 1001 Nicola Street (the Site ). The location of the Site and aerial view is illustrated on Figure 1. The diesel fuel UST was located in the northern corner of the property, under a grassed area and a portion of the fire hall s driveway as shown on Figure 2. Based on information provided by the City of Vancouver, Hemmera understands that the diesel UST was used to fuel the fire engines stationed at Fire Hall #6 and was replaced once previously in approximately Site photos 1 to 10 taken during the environmental monitoring of the UST removal are provided in Appendix A. 1.1 OBJECTIVE The objective of the work was to remove and dispose of approximately 2,000 L diesel fuel UST and to evaluate for the presence of associated potential contaminants of concern (PCOCs) by collecting representative soil samples from the floor and walls of the tank basin. The work also included disconnecting and a capping of the UST s associated underground piping plus removing the dispenser. Quantum Murray Remediation Services (Quantum) was contracted by Hemmera to conduct the work. Hemmera was on-site to perform environmental monitoring, the confirmatory sampling program as well as support Quantum with the removal of the UST. 2.0 APPLICABLE ENVIRONMENTAL QUALITY GUIDELINES / STANDARDS The Site is under provincial jurisdiction and is subject to provincial environmental regulations and guidelines. Therefore, the British Columbia Environmental Management Act (EMA) Contaminated Sites Regulation (CSR) standards were used. The CSR soil standards applied to this program were: The Generic Numerical Soil Standards and Matrix Numerical Soil Standards, Residential Land Use (RL) as presented in Schedules 4, 5 and 10 of the CSR, which includes amendments up to B.C. Reg. 343/2008, May 31, In accordance with the CSR, the applicable matrix soil standards include: intake of contaminated soil (mandatory for all sites), groundwater flow to surface water used by marine life (site-specific standard), groundwater used for drinking water (site-specific standard), and toxicity to soil invertebrates and plants (mandatory for all sites). CSR RL standards have been applied as a fire hall is considered an institutional setting and considered a residential land use under the CSR. For each constituent the most stringent of the above-listed standards was applied to this program.

4 City of Vancouver Hemmera UST Removal at Fire Hall #6, 1001 Nicola Street May INVESTIGATION METHODOLOGY 3.1 HEALTH AND SAFETY A site-specific Health and Safety Plan (HASP) was prepared to address contaminants which may be encountered on Site and to outline the health and safety concerns associated with Site activities. Prior to commencing work on-site, employees and sub-contractors held a health and safety meeting to review the potential hazards. 3.2 TANK DECOMMISSIONING On February 25, 2013, Quantum removed approximately 1,370 L of product from the UST using a vacuum truck operated by Sumas. On February 26, 2013, after exposing the UST with a hydraulic excavator Quantum monitored the vapours inside the tank using a Gastech gas detector to ensure that vapour readings were below 5% of the Lower Explosive Limit (LEL). The UST s access hatch was then opened and another Sumas vacuum truck was used to pressure wash and vacuumed out the interior of the tank, removing approximately 180 L of mixed fuel and wash water. Excavated overburden material was stockpiled on the concrete driveway east of the excavation. The UST was then cut free from its concrete base and removed from the ground. The UST was observed to be in good condition and perforations or cracks were not observed (see Photos 4 and 5, Appendix A). The UST and excavated concrete slab pieces (from the driveway pad) were loaded into a truck and removed from the Site for disposal. Disposal documentation for the UST/dispenser, product and wash water from Quantum as received from Quantum is included in Appendix B. During the work, the UST s associated piping was disconnected and capped and the dispenser removed. A concrete pad underlying the UST, located approximately 2.35 m below grade, was left in place. Some visual and olfactory indications of contamination were observed within the overburden material surrounding the UST and at the south end of the excavation base. The final dimensions of the excavation were approximately 4.0 m long by 4.0 m wide, extending to a depth of approximately 2.35 m below grade. Soil samples were collected from the walls (twelve samples total three per wall), and the floor (three samples total - two samples and one duplicate) of the excavation after the UST was removed in accordance with BC Ministry of Environment (MOE) Guidance Document #1, Contaminated Site Characterization and Confirmation Testing Guidelines. Soil samples were screened in the field for combustible soil vapour (CSV). Eight confirmatory samples were submitted to Maxxam Analytical of Burnaby, BC (Maxxam) for laboratory analysis. The excavation was backfilled using the soil that was excavated while exposing the UST as well as one tandem dump truck load of imported road base material to bring the excavation up to the surrounding elevation (the base of the concrete driveway pad). Also polyethylene sheeting was placed on top of the imported material, following backfill and compaction (see photos 9 and 10).

5 City of Vancouver Hemmera UST Removal at Fire Hall #6, 1001 Nicola Street May RESULTS The results of the work program are presented below. 4.1 SOIL STRATIGRAPHY The in-situ soil stratigraphy encountered during the excavation program, as observed by depth, is summarised in Table 4.1. Some visual and olfactory evidence of contamination was observed in the material surrounding the UST and on the excavation base. Groundwater infiltration was not observed during the excavation and sheen or staining was not observed in the tank excavation (Photo 6 and 7, Appendix A). Table 4.1 Summary of Soil Stratigraphy Approximate Depth Below Grade (m) Primary Soil Type Soil Description Ground surface to 0.2 Ground Surface to 0.2 Concrete Slab Grass and Topsoil N/A (The concrete slab only covered the northeast side of the excavation) Organic topsoil and sand, black /dark brown, medium dense, moist Medium-grained Sand Some fine to coarse gravel, trace silt, brown, loose, moist. 4.2 SOIL ANALYTICAL RESULTS Analytical results for the eight analyzed confirmatory soil samples collected from the excavation are presented in Table 1, attached. Seven confirmatory soil samples and one duplicate were submitted to Maxxam for analysis of one or more of benzene, toluene, ethylbenzene, xylenes, (BTEX), volatile petroleum hydrocarbons (VPH), extractable petroleum hydrocarbons (EPHs), light and heavy extractable petroleum hydrocarbons (LEPH/HEPH), and petroleum PAHs. The samples submitted to the laboratory were chosen based on visual and olfactory evidence as well as field vapour screening measurements. The results from the eight soil samples were reported as below the provincial CSR RL standards with the exception of sample FL-2. This sample was reported with CSR RL exceedances of EPHs/LEPH/HEPH, and select PAH concentrations. The results of the laboratory analysis are shown in Table 1 and a summary of the exceedances are listed below, as follows: South excavation floor (sample FL-2): LEPH was reported at a concentration of 1890 µg/g versus the BC CSR RL standard of 1000 µg/g. HEPH was reported at a concentration of 2910 µg/g versus the BC CSR RL standard of 1000 µg/g.

6 City of Vancouver Hemmera UST Removal at Fire Hall #6, 1001 Nicola Street May 2013 Benzo(a)anthracene was reported at a concentration of 74 µg/g versus the BC CSR RL standard of 1 µg/g. Benzo(a)pyrene was reported at a concentration of 93 µg/g versus the BC CSR RL standard of 1 µg/g. Benzo(b)fluoranthene was reported at a concentration of 72 µg/g versus the BC CSR RL standard of 1 µg/g. Benzo(b,j)fluoranthene was reported at a concentration of 110 µg/g versus the BC CSR RL standard of 1 µg/g. Benzo(k)fluoranthene was reported at a concentration of 35 µg/g versus the BC CSR RL standard of 1 µg/g. Dibenz(a,h)anthracene was reported at a concentration of 17 µg/g versus the BC CSR RL standard of 1 µg/g. Indeno(1,2,3-c,d)pyrene was reported at a concentration of 64 µg/g versus the BC CSR RL standard of 1 µg/g. Phenanthrene was reported at a concentration of 66 µg/g versus the BC CSR RL standard of 5 µg/g. Pyrene was reported at a concentration of 130 µg/g versus the BC CSR RL standard of 10 µg/g. Copies of the certified analytical reports and chain of custody forms for the soil analyses are presented in Appendix C. 5.0 DISCUSSION OF INVESTIGATION PROGRAM The 2,000 L diesel fuel UST was removed from the ground and confirmatory soil samples were collected from the walls and base of the excavation. Seven of the eight confirmatory samples from the excavation walls (6 samples) and floor (1 sample) were reported as below detection limits and thus less than the applicable CSR RL standards. As detailed above, sample FL-2 was reported with exceedances of the CSR RL standard for LEPH, HEPH and select PAHs. Based on the exceedances identified in the southern floor of the UST excavation, further soil remediation is recommended in the vicinity of the excavation base. This should be completed prior to the installation of the new fuel system.

7 City of Vancouver Hemmera UST Removal at Fire Hall #6, 1001 Nicola Street May CONCLUSIONS Samples collected from the limits of the UST excavation were below the CSR RL standards, with the exception of Sample FL-2 collected from the southern base of the excavation. Based on this soil exceedance, further soil remediation is recommended in the vicinity of the excavation base. We trust this meets your requirements at this time. If you have any questions or require further clarification please feel free to contact the undersigned at Report prepared by: Hemmera Garett White, B.Sc. Martin Megens, BA, AScT, PMP Environmental Scientist Environmental Projects Manager (138) (161) gwhite@hemmera.com mmegens@hemmera.com Report reviewed by: Bonnie Marks, M.A.Sc., P.Eng., PMP Senior Project Manager (439) bmarks@hemmera.com

8 City of Vancouver Hemmera UST Removal at Fire Hall #6, 1001 Nicola Street May STATEMENT OF LIMITATIONS This report (Report) was prepared by Hemmera, based on fieldwork conducted by Hemmera, for the sole benefit and exclusive use of The City of Vancouver (CoV). The material in it reflects Hemmera s best judgment in light of the information available to it at the time of preparing this Report. Any use that a third party makes of this Report, or any reliance on or decision made based on it, is the responsibility of such third parties. Hemmera accepts no responsibility for damages, if any, suffered by any third party as a result of decisions made or actions taken based on this Report. Hemmera has performed the work as described in its Scope of Work and, made the findings and conclusions set out in this Report in a manner consistent with the level of care and skill normally exercised by members of the environmental science profession practicing under similar conditions at the time the work was performed. This Report represents a reasonable review of the information available to Hemmera within the established Scope of Work and work schedule. It is possible that the levels of contamination or hazardous materials may vary across the Site, and hence currently unrecognized contamination or potentially hazardous materials may exist at the Site. No warranty, expressed or implied, is given concerning the presence or level of contamination on the Site, except as specifically noted in this Report. The conclusions and recommendations contained in this Report are based upon applicable legislation existing at the time the Report was drafted. Any changes in the legislation may alter the conclusions and/or recommendations contained in the Report. Regulatory implications discussed in this Report were based on the applicable legislation existing at the time this Report was written. In preparing this Report, Hemmera has relied in good faith on information provided by others as noted in this Report, and has assumed that the information provided by those individuals is both factual and accurate. Hemmera accepts no responsibility for any deficiency, misstatement or inaccuracy in this Report resulting from the information provided by those individuals. The liability of Hemmera to CoV shall be limited to injury or loss caused by the negligent acts of Hemmera. The total aggregate liability of Hemmera related to this agreement shall not exceed the lesser of the actual damages incurred, or the total fee of Hemmera for services rendered on this project.

9 City of Vancouver Hemmera UST Removal at Fire Hall #6, 1001 Nicola Street May REFERENCES British Columbia Ministry of Water Land and Air Protection, Environmental Management Act, 2004, Contaminated Sites Regulation, B. C. Reg. 343/2008, including amendments update to May 31, British Columbia Ministry of Environment, (July 2005). Technical Guidance on Contaminated sites document #1: Site Characterization and Confirmation Testing, Environmental Protection Division, Land Remediation Section. Available at: H guidance/technical/pdf/tech1.pdf

10 FIGURES

11 !( ,000 Meters Site Location Site Location (Source: ESRI) ± Excavation Area Nelson Street Nicola Street Comox Street Meters Aerial View (Bing Imagery 2010) FIRE HALL #6 UST REMOVAL 1001 Nicola Street, Vancouver, BC CLIENT: City of Vancouver PROJECT No. SITE LOCATION MAP & AERIAL VIEW May 2013 FIGURE 1

12 Nelson Street EX-N2 2/26/2013 Depth: 0.9 m BTEX/VPHs < PAHs < LEPH/HEPH < ± Excavation Area EX-N3 2/26/2013 Depth: 1.85 m EPHs < Depth (m) A Ground Surface!??!? EX-N1 0.5m EX-N2 0.9m EX-N3 1.85m B Meters FL-1 2/26/2013 Depth: 2.25 m EPHs < 2.5 Nicola Street EX-W3 2/26/2013 Depth: 2.0 m BTEX/VPHs < EPHs < C Ground Surface A 0 EX-W1 0.5m EX-W2 1m A!H??!?!??? 1 Depth (m) EX-W3 2m C 2.5 FL m!H!H FL m (FL-200) B D 2.5 EX-E3 1.8m 2 EX-E2 1m 1 Depth (m) EX-E1 0.5m 0 B Ground Surface D EX-E3 2/26/2013 Depth: 1.80 m EPHs < Path: O:\! \358\011\01\mxd\130522_ _Fig02.mxd Meters Image: City of Vancouver ± BC CSR RL Soil Standards (mg/kg) EPH EPH LEPH 1000 HEPH 1000 Benzo(a)anthracene 1 Benzo(a)pyrene 1 Benzo(b)fluoranthene 1 Benzo(b,j)fluoranthene 1 Benzo(k)fluoranthene 1 Dibenz(a,h)anthracene 1 Indeno(1,2,3-c,d)pyrene 1 Phenanthrene 5 Pyrene 10 FL-200 2/26/2013 Depth: 2.25 m EPHs < EX-S3 2/26/2013 Depth: 1.80 m EPHs < Depth (m) Notes CSR = Contaminated Sites Regulation RL = Residential Land Use BTEX = Benzene, Toluene, Ethylbenzene and Xylene EPH = Extractable Petroleum Hydrocarbons LEPH = Light Extractable Petroleum Hydrocarbons HEPH = Heavy Extractable Petroleum Hydrocarbons PAHs = Polycyclic Aromatic Hydrocarbons VPH = Volatile Petroleum Hydrocarbons All values are reported as µg/g unless otherw ise noted C!? EX-S3 1.8m? EX-S2 1.1m? EX-S1 0.5m Ground Surface D FL-2 2/26/2013 Depth: 2.25 m BTEX/VPHs < LEPH 1890 HEPH 2910 Benzo(a)anthracene 74 Benzo(a)pyrene 93 Benzo(b)fluoranthene 72 Benzo(b,j)fluoranthene 110 Benzo(k)fluoranthene 35 Dibenz(a,h)anthracene 17 Indeno(1,2,3-c,d)pyrene 64 Naphthalene 2.2 Phenanthrene 66 Pyrene 130 Legend Site Boundary!H Floor Sample FIRE HALL #6 UST REMOVAL 1001 Nicola Street, Vancouver, BC? Wall Sample! Sample Below CSR RL Standards UST EXCAVATION AND SOIL RESULTS! Sample Above CSR RL Standards CLIENT: PROJECT No. City of Vancouver May 2013 FIGURE 2

13 TABLE

14 Table 1: Soil Analytical Results - UST Excavation Location ID: EX-E3 EX-N2 EX-N3 EX-S3 EX-W3 FL-1 FL-2 FL-200 RPD 10 Sample ID: EX-E3 EX-N2 EX-N3 EX-S3 EX-W3 FL-1 FL-2 FL Date Sampled: 26/02/ /02/ /02/ /02/ /02/ /02/ /02/ /02/ Sample Depth (m): Parameter BCCSR RL 3,4 Field Tests Field Vapours (ppm) Physical Tests Moisture (%) % BTEX Benzene < < < nc Ethylbenzene < < < nc Styrene < < < nc Toluene < < < nc Xylenes < < < nc EPH EPH <100 <100 <100 <100 < <100 nc EPH <100 <100 <100 <100 < <100 nc LEPH < nc HEPH < nc VPH VH < <10 - <10 - nc VPH < <10 - <10 - nc PAH 2-Methylnaphthalene - - < nc Acenaphthene - - < nc Acenaphthylene - - < nc Anthracene - - < nc Benzo(a)anthracene < nc Benzo(a)pyrene < nc Benzo(b)fluoranthene < nc Benzo(b,j)fluoranthene < nc Benzo(g,h,i)perylene - - < nc Benzo(k)fluoranthene < nc Chrysene - - < nc Dibenz(a,h)anthracene < nc Fluoranthene nc Fluorene - - < nc Indeno(1,2,3-c,d)pyrene < nc Naphthalene < nc Phenanthrene < nc Pyrene nc Total HMW PAH's nc Total LMW PAH's - - < nc Total PAH's nc VOC Methyl tert-butyl ether (MTBE) < < < nc City of Vancouver Fire Hall 6, 1001 Nicola St UST Removal Page 1 of 2 Hemmera File: May 2013

15 Table 1: Notes (1) All values are reported as µg/g unless otherwise noted (2) - = No standard or not analyzed (3) BCCSR = BC Environmental Management Act, Contaminated Sites Regulation, B.C. Reg. 375/96, including amendments up to B.C. Reg. 6/2013; effective January 24, 2013 (4) BCCSR RL = Schedules 4 (Generic) and/or 5 (Matrix), Column IV Residential, and/or Schedule 10, Column III, Agricultural, Urban Park, Residential Soil Standard (5) Schedule 5, Human Health Protection, Groundwater used for drinking water (6) Schedule 5, Environmental Protection, Toxicity to soil invertebrates and plants (7) Schedule 4, Generic Numerical Soil Standards (8) BC Ministry of Water, Land and Air Protection, Director of Waste Management, May 23, 2003, Update on Contaminated Sites, Clarification on Hydrocarbon Analytical Methods and Standards; the Director has extended the EPH to LEPH/HEPH equivalency indefinitely; therefore, EPH concentrations not corrected for PAHs have been conservatively compared to the LEPH/HEPH standards (9) Schedule 10, Generic Numerical Soil and Water Standards, Column III, Agricultural, Urban Park, Residential Soil Standard (10) RPD = Relative Percent Difference. RPD is calculated as the difference between a sample and its field duplicate, over the average of the two values. nc = not calculated. RPD is not calculated if either the sample or the field duplicate concentration is less than five times the detection limit. City of Vancouver Fire Hall 6, 1001 Nicola St UST Removal Page 2 of 2 Hemmera File: May 2013

16 APPENDIX A Site Photographs

17 City of Vancouver APPENDIX A Hemmera UST Removal at Fire Hall #6, 1001 Nicola Street May 2013 Photo 1: View of exclusion zone and work area around UST, looking east. Photo 2: Excavation location, dispenser and top of tank visible.

18 City of Vancouver APPENDIX A Hemmera UST Removal at Fire Hall #6, 1001 Nicola Street May 2013 Photo 3: Partially excavated UST and associated piping. Photo 4: Removing the UST with a hydraulic excavator, view looking north.

19 City of Vancouver APPENDIX A Hemmera UST Removal at Fire Hall #6, 1001 Nicola Street May 2013 Photo 5: Excavated and removed UST. Photo 6: Tank excavation post UST removal, view to the northeast. PVC storm line visible.

20 City of Vancouver APPENDIX A Hemmera UST Removal at Fire Hall #6, 1001 Nicola Street May 2013 Photo 7: Tank excavation basin post UST removal, view to the south. Photo 8: Partially backfilled tank excavation, view looking northeast.

21 City of Vancouver APPENDIX A Hemmera UST Removal at Fire Hall #6, 1001 Nicola Street May 2013 Photo 9: Backfilled tank excavation, view looking northeast. Photo 10: Backfilled tank excavation covered with poly sheeting, view looking northwest.

22 APPENDIX B Disposal Documentation

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32 APPENDIX C Certified Laboratory Report

33 Your Project #: Site Location: CITY OF VANCOUVER - FIRE HALL #6 Your C.O.C. #: G072666, G Attention: Garett White HEMMERA ENVIROCHEM # BURRARD STREET VANCOUVER, BC Canada V6Z 2H3 Report Date: 2013/03/06 CERTIFICATE OF ANALYSIS MAXXAM JOB #: B Received: 2013/02/26, 15:55 Sample Matrix: Soil # Samples Received: 8 Date Date Analyses Quantity Extracted Analyzed Laboratory Method Analytical Method BTEX/MTBE Soil LH, VH, F1 SIM/MS /02/ /03/01 BBY8-SOP EPA SW C BTEX/MTBE Soil LH, VH, F1 SIM/MS /02/ /03/02 BBY8-SOP EPA SW C Moisture 7 N/A 2013/03/01 BBY8SOP Ont MOE -E 3139 Moisture 1 N/A 2013/03/04 BBY8SOP Ont MOE -E 3139 PAH in Soil by GC/MS (SIM) /02/ /03/04 BBY8SOP EPA 8270D PAH in Soil by GC/MS (SIM) /02/ /03/05 BBY8SOP EPA 8270D Total LMW, HMW, Total PAH Calc 1 N/A 2013/03/05 BBY WI BC MOE Lab Method Total LMW, HMW, Total PAH Calc 1 N/A 2013/03/06 BBY WI BC MOE Lab Method EPH less PAH in Soil By GC/FID 1 N/A 2013/03/05 BBY WI BC MOE Lab Method EPH less PAH in Soil By GC/FID 1 N/A 2013/03/06 BBY WI BC MOE Lab Method BC Hydrocarbons in Soil by GC/FID /02/ /03/01 BBY8SOP BC Env Lab Manual BC Hydrocarbons in Soil by GC/FID /02/ /03/04 BBY8SOP BC Env Lab Manual BC Hydrocarbons in Soil by GC/FID /03/ /03/04 BBY8SOP BC Env Lab Manual BC Hydrocarbons in Soil by GC/FID /03/ /03/04 BBY8SOP BC Env Lab Manual Volatile HC-BTEX 2 N/A 2013/03/01 BBY WI BC MOE Lab Method Volatile HC-BTEX 1 N/A 2013/03/04 BBY WI BC MOE Lab Method * Results relate only to the items tested. Encryption Key Jennifer Exter Please direct all questions regarding this Certificate of Analysis to your Project Manager. Amandeep Nagra, BBY Customer Service ANagra@maxxam.ca Phone# (604) Mar :49:22-08:00 ==================================================================== Maxxam has procedures in place to guard against improper use of the electronic signature and have the required "signatories", as per section of ISO/IEC 17025:2005(E), signing the reports. For Service Group specific validation please refer to the Validation Signature Page. Total cover pages: 1 Maxxam Analytics International Corporation o/a Maxxam Analytics Burnaby: 4606 Canada Way V5G 1K5 Telephone(604) Fax(604) Page 1 of 16

34 HEMMERA ENVIROCHEM Maxxam Job #: B Client Project #: Report Date: 2013/03/06 Site Location: CITY OF VANCOUVER - FIRE HALL #6 Sampler Initials: GW PHYSICAL TESTING (SOIL) Maxxam ID FS6192 FS6193 FS6196 FS6199 Sampling Date 2013/02/ /02/ /02/ /02/26 UNITS EX-N2 EX-N3 EX-E3 EX-S3 RDL QC Batch Physical Properties Moisture % Maxxam ID FS6202 FS6203 FS6204 FS6205 Sampling Date 2013/02/ /02/ /02/ /02/26 UNITS EX-W3 QC Batch FL-1 QC Batch FL-2 QC Batch FL-200 RDL QC Batch Physical Properties Moisture % TOTAL PETROLEUM HYDROCARBONS (SOIL) Maxxam ID FS6193 FS6196 FS6199 FS6202 FS6203 FS6205 Sampling Date 2013/02/ /02/ /02/ /02/ /02/ /02/26 UNITS EX-N3 EX-E3 EX-S3 QC Batch EX-W3 QC Batch FL-1 FL-200 RDL QC Batch Hydrocarbons EPH (C10-C19) mg/kg < < < <100 < EPH (C19-C32) mg/kg < < < <100 < Surrogate Recovery (%) O-TERPHENYL (sur.) % RDL = Reportable Detection Limit Page 2 of 16

35 HEMMERA ENVIROCHEM Maxxam Job #: B Client Project #: Report Date: 2013/03/06 Site Location: CITY OF VANCOUVER - FIRE HALL #6 Sampler Initials: GW BCCSR BTEX/VPH BY HS IN SOIL (SOIL) Maxxam ID FS6192 FS6202 FS6204 Sampling Date 2013/02/ /02/ /02/26 UNITS EX-N2 QC Batch EX-W3 QC Batch FL-2 RDL QC Batch Volatiles VPH (VH6 to 10 - BTEX) mg/kg < < < Methyl-tert-butylether (MTBE) mg/kg < < < Benzene mg/kg < < < Toluene mg/kg < < < Ethylbenzene mg/kg < < < m & p-xylene mg/kg < < < o-xylene mg/kg < < < Styrene mg/kg < < < Xylenes (Total) mg/kg < < < VH C6-C10 mg/kg < < < Surrogate Recovery (%) 1,4-Difluorobenzene (sur.) % BROMOFLUOROBENZENE (sur.) % D10-ETHYLBENZENE (sur.) % D4-1,2-DICHLOROETHANE (sur.) % RDL = Reportable Detection Limit Page 3 of 16

36 HEMMERA ENVIROCHEM Maxxam Job #: B Client Project #: Report Date: 2013/03/06 Site Location: CITY OF VANCOUVER - FIRE HALL #6 Sampler Initials: GW LEPH & HEPH FOR CSR IN SOIL (SOIL) Maxxam ID FS6192 FS6204 Sampling Date 2013/02/ /02/26 UNITS EX-N2 RDL FL-2 RDL QC Batch Polycyclic Aromatics Naphthalene mg/kg < Methylnaphthalene mg/kg < Acenaphthylene mg/kg < Acenaphthene mg/kg < (1) Fluorene mg/kg < (1) Phenanthrene mg/kg < (1) Anthracene mg/kg < (1) Fluoranthene mg/kg (1) Pyrene mg/kg (1) Benzo(a)anthracene mg/kg < (1) Chrysene mg/kg < (1) Benzo(b&j)fluoranthene mg/kg < (1) Benzo(b)fluoranthene mg/kg < (1) Benzo(k)fluoranthene mg/kg < (1) Benzo(a)pyrene mg/kg < (1) Indeno(1,2,3-cd)pyrene mg/kg < (1) Dibenz(a,h)anthracene mg/kg < (1) Benzo(g,h,i)perylene mg/kg < (1) Low Molecular Weight PAH`s mg/kg < High Molecular Weight PAH`s mg/kg Total PAH mg/kg Surrogate Recovery (%) D10-ANTHRACENE (sur.) % D8-ACENAPHTHYLENE (sur.) % D8-NAPHTHALENE (sur.) % TERPHENYL-D14 (sur.) % Calculated Parameters LEPH (C10-C19 less PAH) mg/kg < HEPH (C19-C32 less PAH) mg/kg < Hydrocarbons EPH (C10-C19) mg/kg < EPH (C19-C32) mg/kg < Surrogate Recovery (%) O-TERPHENYL (sur.) % RDL = Reportable Detection Limit (1) - RDL raised due to sample dilution. Page 4 of 16

37 HEMMERA ENVIROCHEM Maxxam Job #: B Client Project #: Report Date: 2013/03/06 Site Location: CITY OF VANCOUVER - FIRE HALL #6 Sampler Initials: GW QUALITY ASSURANCE REPORT Matrix Spike Spiked Blank Method Blank RPD QC Batch Parameter Date % Recovery QC Limits % Recovery QC Limits Value UNITS Value (%) QC Limits Moisture 2013/03/01 <0.30 % O-TERPHENYL (sur.) 2013/03/ % EPH (C10-C19) 2013/03/ <100 mg/kg NC EPH (C19-C32) 2013/03/ <100 mg/kg NC Moisture 2013/03/02 <0.30 % ,4-Difluorobenzene (sur.) 2013/03/ % BROMOFLUOROBENZENE (sur.) 2013/03/ % D10-ETHYLBENZENE (sur.) 2013/03/ % D4-1,2-DICHLOROETHANE (sur.) 2013/03/ % Benzene 2013/03/ < mg/kg NC Toluene 2013/03/ <0.020 mg/kg NC Ethylbenzene 2013/03/ <0.010 mg/kg NC m & p-xylene 2013/03/ <0.040 mg/kg NC o-xylene 2013/03/ <0.040 mg/kg NC VH C6-C /03/ <10 mg/kg NC Methyl-tert-butylether (MTBE) 2013/03/01 <0.10 mg/kg Styrene 2013/03/01 <0.030 mg/kg Xylenes (Total) 2013/03/01 <0.040 mg/kg NC ,4-Difluorobenzene (sur.) 2013/03/ % BROMOFLUOROBENZENE (sur.) 2013/03/ % D10-ETHYLBENZENE (sur.) 2013/03/ % D4-1,2-DICHLOROETHANE (sur.) 2013/03/ % Benzene 2013/03/ < mg/kg NC Toluene 2013/03/ <0.020 mg/kg NC Ethylbenzene 2013/03/ <0.010 mg/kg NC m & p-xylene 2013/03/ <0.040 mg/kg NC o-xylene 2013/03/ <0.040 mg/kg NC VH C6-C /03/ <10 mg/kg NC Methyl-tert-butylether (MTBE) 2013/03/02 <0.10 mg/kg NC Styrene 2013/03/02 <0.030 mg/kg NC Xylenes (Total) 2013/03/02 <0.040 mg/kg NC Moisture 2013/03/04 <0.30 % O-TERPHENYL (sur.) 2013/03/ % EPH (C10-C19) 2013/03/ <100 mg/kg NC EPH (C19-C32) 2013/03/ <100 mg/kg NC D10-ANTHRACENE (sur.) 2013/03/04 56(1, 2) % D8-ACENAPHTHYLENE (sur.) 2013/03/ % D8-NAPHTHALENE (sur.) 2013/03/ % TERPHENYL-D14 (sur.) 2013/03/ % Naphthalene 2013/03/ <0.050 mg/kg NC 50 Page 5 of 16

38 HEMMERA ENVIROCHEM Maxxam Job #: B Client Project #: Report Date: 2013/03/06 Site Location: CITY OF VANCOUVER - FIRE HALL #6 Sampler Initials: GW QUALITY ASSURANCE REPORT Matrix Spike Spiked Blank Method Blank RPD QC Batch Parameter Date % Recovery QC Limits % Recovery QC Limits Value UNITS Value (%) QC Limits Methylnaphthalene 2013/03/ <0.050 mg/kg NC Acenaphthylene 2013/03/ <0.050 mg/kg NC Acenaphthene 2013/03/ <0.050 mg/kg NC Fluorene 2013/03/ <0.050 mg/kg NC Phenanthrene 2013/03/ <0.050 mg/kg NC Anthracene 2013/03/ <0.050 mg/kg NC Fluoranthene 2013/03/ <0.050 mg/kg NC Pyrene 2013/03/ <0.050 mg/kg NC Benzo(a)anthracene 2013/03/ <0.050 mg/kg NC Chrysene 2013/03/ <0.050 mg/kg NC Benzo(b&j)fluoranthene 2013/03/ <0.050 mg/kg NC Benzo(b)fluoranthene 2013/03/04 81 N/A 83 N/A <0.050 mg/kg NC N/A Benzo(k)fluoranthene 2013/03/ <0.050 mg/kg NC Benzo(a)pyrene 2013/03/ <0.050 mg/kg NC Indeno(1,2,3-cd)pyrene 2013/03/ <0.050 mg/kg NC Dibenz(a,h)anthracene 2013/03/ <0.050 mg/kg NC Benzo(g,h,i)perylene 2013/03/ <0.050 mg/kg NC 50 N/A = Not Applicable RPD = Relative Percent Difference Duplicate: Paired analysis of a separate portion of the same sample. Used to evaluate the variance in the measurement. Matrix Spike: A sample to which a known amount of the analyte of interest has been added. Used to evaluate sample matrix interference. Spiked Blank: A blank matrix sample to which a known amount of the analyte, usually from a second source, has been added. Used to evaluate method accuracy. Method Blank: A blank matrix containing all reagents used in the analytical procedure. Used to identify laboratory contamination. Surrogate: A pure or isotopically labeled compound whose behavior mirrors the analytes of interest. Used to evaluate extraction efficiency. NC (RPD): The RPD was not calculated. The level of analyte detected in the parent sample and its duplicate was not sufficiently significant to permit a reliable calculation. (1) - Recovery or RPD for this parameter is outside control limits. The overall quality control for this analysis meets acceptability criteria. (2) - Surrogate recovery below control limit. Page 6 of 16

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41 HEMMERA ENVIROCHEM Report Date: 2013/03/06 Client Project #: Maxxam Job #: B Site Reference: CITY OF VANCOUVER - FIRE HALL #6 Maxxam Sample: FS6192 Client ID: EX-N2 BC Hydrocarbons in Soil by GC/FID Chromatogram Note: This information is provided for reference purposes only. Should detailed chemist interpretation or fingerprinting be required, please contact the laboratory. Page 9 of 16

42 HEMMERA ENVIROCHEM Report Date: 2013/03/06 Client Project #: Maxxam Job #: B Site Reference: CITY OF VANCOUVER - FIRE HALL #6 Maxxam Sample: FS6193 Client ID: EX-N3 BC Hydrocarbons in Soil by GC/FID Chromatogram Note: This information is provided for reference purposes only. Should detailed chemist interpretation or fingerprinting be required, please contact the laboratory. Page 10 of 16

43 HEMMERA ENVIROCHEM Report Date: 2013/03/06 Client Project #: Maxxam Job #: B Site Reference: CITY OF VANCOUVER - FIRE HALL #6 Maxxam Sample: FS6196 Client ID: EX-E3 BC Hydrocarbons in Soil by GC/FID Chromatogram Note: This information is provided for reference purposes only. Should detailed chemist interpretation or fingerprinting be required, please contact the laboratory. Page 11 of 16

44 HEMMERA ENVIROCHEM Report Date: 2013/03/06 Client Project #: Maxxam Job #: B Site Reference: CITY OF VANCOUVER - FIRE HALL #6 Maxxam Sample: FS6199 Client ID: EX-S3 BC Hydrocarbons in Soil by GC/FID Chromatogram Note: This information is provided for reference purposes only. Should detailed chemist interpretation or fingerprinting be required, please contact the laboratory. Page 12 of 16

45 HEMMERA ENVIROCHEM Report Date: 2013/03/06 Client Project #: Maxxam Job #: B Site Reference: CITY OF VANCOUVER - FIRE HALL #6 Maxxam Sample: FS6202 Client ID: EX-W3 BC Hydrocarbons in Soil by GC/FID Chromatogram Note: This information is provided for reference purposes only. Should detailed chemist interpretation or fingerprinting be required, please contact the laboratory. Page 13 of 16

46 HEMMERA ENVIROCHEM Report Date: 2013/03/06 Client Project #: Maxxam Job #: B Site Reference: CITY OF VANCOUVER - FIRE HALL #6 Maxxam Sample: FS6203 Client ID: FL-1 BC Hydrocarbons in Soil by GC/FID Chromatogram Note: This information is provided for reference purposes only. Should detailed chemist interpretation or fingerprinting be required, please contact the laboratory. Page 14 of 16

47 HEMMERA ENVIROCHEM Report Date: 2013/03/06 Client Project #: Maxxam Job #: B Site Reference: CITY OF VANCOUVER - FIRE HALL #6 Maxxam Sample: FS6204 Client ID: FL-2 BC Hydrocarbons in Soil by GC/FID Chromatogram Note: This information is provided for reference purposes only. Should detailed chemist interpretation or fingerprinting be required, please contact the laboratory. Page 15 of 16

48 HEMMERA ENVIROCHEM Report Date: 2013/03/06 Client Project #: Maxxam Job #: B Site Reference: CITY OF VANCOUVER - FIRE HALL #6 Maxxam Sample: FS6205 Client ID: FL-200 BC Hydrocarbons in Soil by GC/FID Chromatogram Note: This information is provided for reference purposes only. Should detailed chemist interpretation or fingerprinting be required, please contact the laboratory. Page 16 of 16