PHASE II SUBSURFACE INVESTIGATION REPORT

Transcription

1 PHASE II SUBSURFACE INVESTIGATION REPORT Perris-Indian & Markham-Land Indian Avenue & Markham Street Perris, California May 3, 2016 Partner Project Number: Prepared for: Duke Realty 8001 Irvine Center Drive, Suite 1450 Irvine, California Engineers who understand your business

2 May 3, 2016 Mr. Adam Schmid Duke Realty 8001 Irvine Center Drive, Suite 1450 Irvine, California Subject: Phase II Subsurface Investigation Report Perris-Indian & Markham-Land Indian Avenue & Markham Street Perris, California Partner Project Number: Dear Mr. Schmid: Partner Engineering and Science, Inc. (Partner) is pleased to provide the results of the assessment performed on the above-referenced property. The following report describes the field activities, methods, and findings of the Phase II Subsurface Investigation conducted at the above-referenced property. This assessment was performed utilizing methods and procedures consistent with good commercial or customary practices designed to conform to acceptable industry standards. The independent conclusions represent Partner s best professional judgment based upon existing conditions and the information and data available to us during the course of this assignment. We appreciate the opportunity to provide these services. If you have any questions concerning this report, or if we can assist you in any other matter, please contact Bob Geiger at (310) Sincerely, Partner Engineering and Science, Inc. Brian Godbois Staff Assessor Samantha J. Fujita, PG Regional Manager Subsurface Investigation Bob Geiger Principal 2154 Torrance Boulevard, Suite 200, Torrance, California Phone Fax

3 TABLE OF CONTENTS 1.0 Introduction Purpose Limitations User Reliance Site Background Site Description Site History Geology and Hydrogeology Field Activities Preparatory Activities Utility Clearance Health and Safety Plan Drilling Equipment Boring Locations Soil Sampling Post-Sampling Activities Laboratory Analysis Laboratory Analysis Laboratory Analytical Results Soil Sample Analytical Results Discussion and Conclusions Regulatory Agency Guidance Discussion Summary and Conclusions... 8 ATTACHMENTS Tables Figures Appendices 1. Summary of Investigation Scope 2. Soil Sample TPH-cc Laboratory Results 3. Soil Sample VOCs Laboratory Results 1. Site Plan 2. Topographic Map 3. Sample Location Map A. Boring Logs B. Laboratory Analytical Report

4 1.0 INTRODUCTION 1.1 Purpose The purpose of the investigation was to evaluate the potential impact of petroleum hydrocarbons and volatile organic compounds (VOCs) to soil as a consequence of a release or releases from the on-site industrial activities. Duke Realty provided project authorization of Partner Proposal Number P Limitations This report presents a summary of work conducted by Partner. The work includes observations of site conditions encountered and the analytical results provided by an independent third party laboratory of samples collected during the course of the project. The number and location of samples were selected to provide the required information. However, it cannot be assumed that the limited available data are representative of subsurface conditions in areas not sampled. Conclusions and/or recommendations are based on the observations, laboratory analyses, and the governing regulations. Conclusions and/or recommendations beyond those stated and reported herein should not be inferred from this document. Partner warrants that the environmental consulting services contained herein were accomplished in accordance with generally-accepted practices in the environmental engineering, geology, and hydrogeology fields that existed at the time and location of work. No other warranties are implied or expressed. 1.3 User Reliance Partner was engaged by Duke Realty (the Addressee), or their authorized representative, to perform this investigation. The engagement agreement specifically states the scope and purpose of the investigation, as well as the contractual obligations and limitations of both parties. This report and the information therein, are for the exclusive use of the Addressee. This report has no other purpose and may not be relied upon, or used, by any other person or entity without the written consent of Partner. Third parties that obtain this report, or the information therein, shall have no rights of recourse or recovery against Partner, its officers, employees, vendors, successors or assigns. Any such unauthorized user shall be responsible to protect, indemnify and hold Partner, the Addressee and their respective officers, employees, vendors, successors and assigns harmless from any and all claims, damages, losses, liabilities, expenses (including reasonable attorneys fees) and costs attributable to such use. Unauthorized use of this report shall constitute acceptance of, and commitment to, these responsibilities, which shall be irrevocable and shall apply regardless of the cause of action or legal theory pled or asserted. This report has been completed under specific Terms and Conditions relating to scope, relying parties, limitations of liability, indemnification, dispute resolution, and other factors relevant to any reliance on this report. Any parties relying on this report do so having accepted the Terms and Conditions for which this report was completed. Phase II Subsurface Investigation Report Project No May 3, 2016 Page 1

5 2.0 SITE BACKGROUND 2.1 Site Description The subject property consists of six parcels of land comprising approximately 31 acres located on the southeast corner of the West Markham Street and Indian Avenue intersection within a mixed undeveloped, commercial, and industrial area of Riverside County, California. The subject property is currently developed with four single-story buildings and three open canopies, which were constructed between 1976 and 2006 and are occupied by Bruno Farms, Inc. The eastern portion of the subject property is currently occupied by Bruno Farms Inc. for commercial office, storage, and light industrial use; while the western portion is vacant land. On-site operations consist of raw agricultural-related material storage such as almonds, cotton, and hay for grinding, pulverizing, which is packaged for off-site distribution, other operations include maintenance service and repair of tractors and grinding machinery, storage of diesel fuel, hazardous substances, and administrative office operations. In addition to the current structures, the subject property is also improved with one domestic septic system, one concrete-paved vehicle wash area connected to a floor drain and septic system, one 5,000-gallon aboveground storage tank (AST) within concrete block secondary containment, one 500-gallon propane tank, four approximate 25-ton grain silos, one in-asphalt truck scale, one aboveground steel walled container for hazardous material storage, three open canopied areas for commodities, equipment, and truck storage, asphalt-paved parking areas, and associated landscaping. The southeastern parcel was observed as occupied with livestock for grazing and off-site grazing business operations. The remaining parcels west of Bruno Farms Inc. were observed as undeveloped vacant land with overgrown vegetation. The subject property is bound by commercial property to the north across West Markham Street, commercial to the east, agricultural property to the south across Indian Avenue and West Perry Street, and agricultural property to the west across Indian Avenue. Refer to Figure 1 for a site plan showing site features and surrounding properties. 2.2 Site History Partner completed a Phase I Environmental Site Assessment Report (Phase I) dated March 28, 2016, prepared on behalf of on behalf of Duke Realty. Based on the information reviewed and the site reconnaissance, the subject property was formerly developed for agricultural purposes as early as 1949; developed with a mobile trailer and one of the current storage structures between 1976 and 1977; improved with the larger storage building circa 1989; fallow and undeveloped to the west and southwest from circa 1978 to the present; and developed with the remaining canopies and office structure between 2002 and According to historical records and site reconnaissance activities, the eastern portion of the subject property has a lengthy history of disposal and recycling operations (likely transfer station or fleet vehicle staging and repair) and the servicing and repair of other fleet vehicle, tractors and related equipment. These operations, which include the use, storage, and management of bulk quantities of petroleum products and hazardous substances, were conducted at the subject property for over 25 years (from at least 1988 to present). There is a lack of qualitative soil and/or groundwater data associated with the disposal/recycling and vehicle repair Phase II Subsurface Investigation Report Project No May 3, 2016 Page 2

6 operational areas. In addition, Partner observed the storage of oil in eight 55-gallon drums and one 250- gallon plastic storage tank on the wood floor decking of a larger steel-walled storage container that was situated in an unpaved area southwest of the maintenance/part shop. Oil product and staining was observed throughout the storage area on the wood floor decking. Physical and visual access below the storage container was not available, and Partner was not able to determine if oil had impacted the soils below or if an encapsulating steel floor was present beneath the wood decking. As such, Partner could not rule out the possibility of an undocumented release of petroleum products or hazardous substances to have adversely impacted the subject property. Therefore, in the absence of subsurface data, the use of the subject property as a fleet vehicle staging and repair facility (commonly known petroleum product and hazardous substance-intensive related operations) for over 25 years was representative of a recognized environmental condition (REC) in connection with the subject property. The subject property maintains two on-site septic systems for which the style or construction type (either holding tank or leach field system) could not be substantiated. Even when petroleum products and hazardous substances are properly stored and disposed of, such materials can be released during general facility operations in small, frequent releases through floor drains, cracked concrete, and sewer systems that can easily accumulate in the soil and migrate to the groundwater of the subject property. Septic systems (holding tank styles if compromised and leach fields by direct discharge) can act as a conduit for petroleum products and hazardous substances to become placed into the subsurface. Partner could not rule out the possibility of an undocumented release of petroleum products or hazardous substances to have adversely impacted the subject property. Therefore, in the absence of subsurface data, the presence of on-site septic systems in conjunction with the use of the subject property as a fleet vehicle staging and repair facility (commonly known petroleum product and hazardous substance-intensive related operations) for over 25 years was representative of a REC in connection with the subject property. Bruno Farms Inc. maintains two washing machines which generate greywater that is discharged onto unpaved areas of the adjacent vacant parcel (Parcel ) and onto the subject property. Household greywater discharge does not typically represent a significant environmental concern. However, considering operations on the subject property include the industrial-based vehicle service and repair activities with the use and washing of clothing and rags assumed to be affected with petroleum products and hazardous substances, Partner could not rule out the possibility of an undocumented release of the affected greywater to have adversely impacted the subject property. Therefore, in the absence of subsurface data, the greywater discharge area was representative of a REC in connection with the subject property. 2.3 Geology and Hydrogeology Based on a review of the United States Geological Survey (USGS) Perris, California Quadrangle topographic map, the subject property is situated at an elevation approximately 1465 feet above mean sea level, and the local topography is sloping gently to the southwest. Refer to Figure 2 for a topographic map of the site vicinity. Based on borings advanced during this investigation, the underlying subsurface consists predominantly of medium brown, very fine to fine grained, dry, medium dense, poorly graded, silty sand from the ground surface to approximately ten feet below ground surface (bgs). Refer to Appendix A for boring logs from this investigation. Phase II Subsurface Investigation Report Project No May 3, 2016 Page 3

7 Groundwater was not encountered during this investigation and was not part of the scope of work. According to the State Water Resources Control Board (SWRCB) GeoTracker Website, a nearby Leaking Underground Storage Tank (LUST) site is Shell Perris # Newlowe Properties (global facility identification number T ) at 4039 North Perris Boulevard in the city of Perris, which is approximately 0.5 miles to the southeast of the subject property and is overseen by the Santa Ana Regional Water Quality Control Board (SARWQCB) as Case Number The site maintained three groundwater monitoring wells in the area. The most recent monitoring data available on the GeoTracker Website was for April 23, 2009, with depth to groundwater ranging from to feet bgs with a direction of flow to the southwest. Phase II Subsurface Investigation Report Project No May 3, 2016 Page 4

8 3.0 FIELD ACTIVITIES Refer to Table 1 for a summary of the borings, sampling schedule and laboratory analyses for this investigation. The scope of the Phase II Subsurface Investigation included the advancement of nine borings (B1 through B9) for the collection of representative soil samples. 3.1 Preparatory Activities Prior to the initiation of fieldwork, Partner completed the following activities Utility Clearance Partner delineated the work area with white spray chalk and notified Underground Service Alert (USA) to clear public utility lines as required by law at least 48 hours prior to drilling activities. USA issued ticket number B B for the project. In addition, Partner subcontracted with Subsurface Surveys (SSS) on April 19, 2016, to clear boring locations of utilities. SSS systematically free-traversed each proposed boring location with a Geonics EM-61 and a Fischer M-Scope electromagnetic induction (EM) equipment, a Schonstedt GA-52 magnetic gradiometer, a Sensors and Software Noggin ground penetrating radar (GPR) unit, and a Metrotech 9890 utility locator with line-tracing capabilities and the equipment readouts were interpreted in real time for evidence of utility lines and/or other subsurface features of potential concern. Boring placement was modified as necessary based on the geophysical survey results to avoid damaging underground features Health and Safety Plan Partner reviewed the site-specific Health and Safety Plan with on-site personnel involved in the project prior to the commencement of drilling activities. 3.2 Drilling Equipment On April 19, 2016, Partner subcontracted with Minute Man Drilling, Inc. (MMD) to provide and operate drilling equipment. MMD, under the direction of Partner, advanced borings B1 through B9 with a truckmounted GeoProbe Model 5400 direct-push drill rig. Sampling equipment was decontaminated between sample intervals and boring locations to prevent cross-contamination. 3.3 Boring Locations Boring B1 was advanced to the east of the diesel fuel dispenser. Boring B2 was advanced to the north of the car wash drain. Boring B3 was advanced to the south of the greywater discharge area. Boring B4 was advanced to the northeast of the hazardous materials storage area. Boring B5 was advanced to the west of the car wash septic system. Boring B6 was advanced to the southeast of the equipment storage building. Boring B7 was advanced to the northeast of the equipment storage building. Boring B8 was advanced in the southeast corner of the property. Boring B9 was advanced in the southwest corner of the subject property. Boring placement was limited/modified due to access limitations by the truck mounted dig rig. Refer to Figure 3 for a map indicating boring locations. Phase II Subsurface Investigation Report Project No May 3, 2016 Page 5

9 3.4 Soil Sampling Borings B1, B2, and B4 were overlain by concrete, which was penetrated using a punch bit attachment advanced by the direct-push drill rig. Borings B3, and B7 through B9 were unpaved. Borings B5 and B6 were overlain by asphalt, which was penetrated using a punch bit attachment advanced by the direct-push drill rig. Borings B1 through B9 were advanced to a terminal depth of 10 feet bgs. Soil samples were collected using a two-foot long by 1.5-inch diameter sampler with a two-foot long acetate liner and sampling point. The sampler was advanced by the direct-push drill rig using four-foot by inch diameter hollow rods with the inner rods in place. At approximately one foot above the desired sampling depth, an inner rod was removed and the sampler was advanced to the desired sampling depth to allow undisturbed soil to enter the sampling liner. The sampler was retrieved from the subsurface and the soil-filled liner was removed. Each acetate liner was cut using a hacksaw or pipe-cutter. Samples were collected from the lower half of the liner using a disposable plastic syringe and retained in two sodium bisulfate-preserved volatile organics analysis (VOA) vials in accordance with United States Environmental Protection Agency (EPA) Method 5035 sampling protocol. The remainder of the lower half of the liner was capped on either end with Teflon tape and plastic caps. The capped liners and VOA vials were labeled for identification and stored in an iced cooler. The soil in the upper half of the liner was visually inspected for discoloration, monitored for odors, classified in accordance with the Unified Soil Classification System, placed in a sealable plastic bag, and field-screened with a photoionization detector (PID). None of the samples exhibited discoloration or an odor and none of the PID readings suggested the presence of elevated volatile organics concentrations. Soil samples were collected from each boring at two, five, and 10 feet bgs. 3.5 Post-Sampling Activities Boreholes were backfilled with hydrated bentonite chips following sampling activities. Boreholes advanced in improved areas were capped with concrete patch after being backfilled. No significant amounts of derived wastes were generated during this investigation. Phase II Subsurface Investigation Report Project No May 3, 2016 Page 6

10 4.0 LABORATORY ANALYSIS 4.1 Laboratory Analysis Partner collected 27 soil samples on April 19, 2016, which were transported on the same day in an iced cooler under proper chain-of-custody protocol to Alpha Scientific Corporation (ASC), a state-certified laboratory (California Department of Public Health Environmental Laboratory Accreditation Program certificate number 2633) in the City of Cerritos, California, for analysis. Based on field-screening results, visual observations, and/or olfactory observations, one soil sample per boring (nine soil samples total) were analyzed for carbon chain total petroleum hydrocarbons (TPH-cc) in accordance with EPA Method 8015M and for VOCs in accordance with EPA Method 8260B. The remaining soil samples were placed on hold at the laboratory. 4.2 Laboratory Analytical Results Laboratory analytical results are included in Appendix B and discussed below Soil Sample Analytical Results None of the analyzed soil samples contained detectable concentrations of TPH-cc or VOCs at concentrations exceeding the laboratory practical quantitation limits (PQLs). Refer to Tables 2 and 3 for a summary of the soil sample TPH-cc and VOCs, laboratory analysis results, respectively. Phase II Subsurface Investigation Report Project No May 3, 2016 Page 7

11 5.0 DISCUSSION AND CONCLUSIONS 5.1 Regulatory Agency Guidance Maximum Soil Screening Levels Maximum Soil Screening Levels (SSLs) are concentrations of petroleum hydrocarbons that are allowed to remain in soil without potentially degrading the quality of groundwater underlying a site. Maximum SSLs are established and enforced by the Los Angeles Regional Water Quality Control Board (LARWQCB). Department of Toxic Substances Control Regional Screening Levels Regional Screening Levels (RSLs) (formerly Preliminary Remediation Goals) are generic, risk-based chemical concentrations developed by the EPA Region 9 for use in initial screening-level evaluations. RSLs combine human health toxicity values with standard exposure factors to estimate contaminant concentrations that are considered to be health protective of human exposures over a lifetime through direct-contact exposure pathways (e.g., via inhalation and/or ingestion of and/or dermal contact with impacted soil and/or indoor air). RSLs are not legally enforceable standards, but rather are considered guidelines to evaluate if potential risks associated with encountered chemical impacts may warrant further evaluation. The Department of Toxic Substances Control (DTSC) Office of Human and Ecological Risk (HERO) developed California-Modified RSLs based on a review of 1) the differences in methodology between PRGs and RSLs 2) RSL concentrations, and 3) recent toxicity values. 5.2 Discussion None of the analyzed soil samples contained detectable concentrations of TPH-cc or VOCs above their respective PQLs which were below their respective applicable screening levels. There does not appear to be impacts of TPH-cc or VOCs to soil as a consequence of a release or releases from the on-site industrial activities. 5.3 Summary and Conclusions Partner conducted a Phase II Subsurface Investigation at the subject property to investigate the potential impact of petroleum hydrocarbons and VOCs to soil as a consequence of a release or releases from the onsite industrial activities. The scope of the Phase II Subsurface Investigation included the advancement of nine soil borings. Nine soil samples were analyzed for TPH-cc and VOCs. Subsurface lithology encountered in the upper ten feet bgs consisted predominantly of medium brown, very fine to fine grained, dry, medium dense, poorly graded, silty sand. TPH-cc and VOCs were not detected in any of the analyzed soil samples at concentrations exceeding laboratory PQLs and applicable screening levels. Based on the field observations and analysis of soil samples, there is no evidence of a release or releases of hazardous materials from the subject property and Partner recommends no further investigation with respect to the on-site industrial activities at this time. Phase II Subsurface Investigation Report Project No May 3, 2016 Page 8

12 TABLES

13 Table 1: Summary of Investigation Scope Indian Avenue Markham Street Perris, California Partner Project Number May 2016 Boring Identification Location Terminal Depth (feet bgs) Matrix Sampled Sampling Depths* (feet bgs) Target Analytes B1 East of Diesel Fuel Dispenser 10 Soil 2, 5, 10 TPH-cc, VOCs B2 North of Car Wash Drain 10 Soil 2, 5, 10 TPH-cc, VOCs B3 South of Greywater Discharge Area 10 Soil 2, 5, 10 TPH-cc, VOCs B4 Northeast of Hazardous Materials Storage Area 10 Soil 2, 5, 10 TPH-cc, VOCs B5 West of Car Wash Septic System 10 Soil 2, 5, 10 TPH-cc, VOCs B6 Southeast of Equipment Storage Building 10 Soil 2, 5, 10 TPH-cc, VOCs B7 Northeast of Equipment Storage Building 10 Soil 2, 5, 10 TPH-cc, VOCs B8 Southeast Corner of Property 10 Soil 2, 5, 10 TPH-cc, VOCs B9 Southwest Corner of Property 10 Soil 2, 5, 10 TPH-cc, VOCs Notes: *Depths in bold analyzed for carbon chain total petroleum hydrocarbons (TPH-cc) in accordance with United States Environmental Protection Agency (EPA) Method 8015M. Depths in italics analyzed for volatile organic compounds (VOCs) in accordance with EPA Method 8260B. bgs = below ground surface

14 Notes: Table 2: Soil Sample TPH-cc Laboratory Results Indian Avenue Markham Street Perris, California Partner Project Number May 2016 EPA Method Units TPH-cc via 8015M (mg/kg) Analyte Maximum SSL B1-2 B2-2 B3-2 B4-2 B5-2 B6-2 B7-2 B8-2 B9-2 TPH-g 500 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 TPH-d 1,000 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 TPH-o 10,000 < 40 < 40 < 40 < 40 < 40 < 40 < 40 < 40 < 40 TPH-cc = carbon chain total petroleum hydrocarbons EPA = United States Environmental Protection Agency TPH-g = total petroleum hydrocarbons as gasoline TPH-d = total petroleum hydrocarbons as diesel TPH-o = total petroleum hydrocarbons as oil mg/kg = milligrams per kilogram SSLs = Soil-screening levels (Los Angeles Regional Water Quality Control Board - April 27, 2004) for groundwater at a depth of 79 feet bgs. < = not detected above indicated laboratory Practical Quantitation Limit (PQL)

15 Notes: Table 3: Soil Sample VOCs Laboratory Results Indian Avenue Markham Street Perris, California Partner Project Number May 2016 EPA Method Units VOCs via 8260B (µg/kg) Analyte Residential Industrial Soil RSL Soil RSL B1-2 B2-2 B3-2 B4-2 B5-5 B6-2 B7-2 B8-2 B9-2 Benzene 1,100 5,400 < 2 < 2 < 2 < 2 < 2 < 2 < 2 < 2 < 2 Toluene 5,000,000 45,000,000 < 2 < 2 < 2 < 2 < 2 < 2 < 2 < 2 < 2 Ethylbenzene* 5,400 27,000 < 2 < 2 < 2 < 2 < 2 < 2 < 2 < 2 < 2 Xylenes* 630,000 2,700,000 < 4 < 4 < 4 < 4 < 4 < 4 < 4 < 4 < 4 Other VOCs NA NA ND ND ND ND ND ND ND ND ND VOCs = volatile organic compounds EPA = United States Environmental Protection Agency µg/kg = micrograms per kilogram RSL = January 2016 Department of Toxic Substances Control (DTSC) Regional Screening Levels (RSLs). If DTSC RSLs do not exist, November 2015 EPA Region 9 RSLs were utilized, as denoted by *. < = not detected above indicated laboratory Practical Quantitation Limit (PQL) NA = not applicable ND = not detected above laboratory PQLs

16 FIGURES

17 Commercial West Markham Street Indian Avenue & Markham Street Commercial Indian Avenue Area Shown In Figure 3 Agricultural West Perry Street Agricultural Agricultural Approximate Scale: 1 = 240 Legend Site Plan 2154 Torrance Boulevard, Suite 200 Torrance, California Project Number: N Subject Site Figure 1 Prepared By B.Godbois April 2016 Indian Avenue & Markham Street Perris, California Date

18 Subject Property 2154 Torrance Boulevard, Suite 200 Torrance, California Project Number: N Legend USGS Perris, California Quadrangle Version: 1978 Current as of: 1979 Topographic Map Figure 2 Prepared By Date B. Godbois April 2016 Indian Avenue & Markham Street Perris, California 92571

19 West Markham Street Greywater Discharge B3 B2 Car Wash Drain B1 B7 Hazardous Materials Storage Diesel Fuel Dispenser B5 Car Wash Septic System B4 Equipment Storage B6 B8 B Approximate Scale: 1 = Torrance Boulevard, Suite 200 Torrance, California Project Number: N Subject Site Boring Location Legend Sample Location Map Figure 3 Prepared By Date B. Godbois April 2016 Indian Avenue & Markham Street Perris, California 92571

20 APPENDIX A: BORING LOGS

21 Boring Number: Location: Site Address: Project Number: Drill Rig Type: Sampling Equipment: Borehole Diameter: Depth Sample 1 B1 Page 1 of 1 East of Diesel Fuel Dispenser Date Started: 4/19/2016 Indian Avenue & Markham Street Date Completed: 4/19/2016 Perris, California Depth to Groundwater: N/A Field Technician: B. Godbois Truck Mounted Direct Push Drill Rig Partner Engineering and Science Acetate liner, plastic syringes 2154 Torrance Boulevard, Suite " Torrance, California PID USCS Description Notes 6" of concrete at surface. 2 1 B ML Sandy SILT: medium brown, very fine to fine grained sand, dry, dense, poorly graded B ML Sandy SILT: medium brown, very fine to fine grained sand, dry, dense, poorly graded B ML Sandy SILT: medium brown, very fine to coarse grained sand, dry, loose, poorly graded. Boring terminated at 10 feet bgs. Borehole was backfilled with bentonite chips and capped with concrete upon completion of sampling.

22 Boring Number: B2 Page 1 of 1 Location: North of Car Wash Drain Date Started: 4/19/2016 Site Address: Indian Avenue & Markham Street Date Completed: 4/19/2016 Perris, California Depth to Groundwater: N/A Project Number: Field Technician: B. Godbois Drill Rig Type: Truck Mounted Direct Push Drill Rig Partner Engineering and Science Sampling Equipment: Acetate liner, plastic syringes 2154 Torrance Boulevard, Suite 200 Borehole Diameter: 1.5" Torrance, California Depth Sample PID USCS Description Notes 1 6" of concrete at surface. 2 1 B ML Sandy SILT: medium brown, very fine to fine grained sand, dry, medium dense, poorly graded B SM Silty SAND: medium brown, very fine to fine grained sand, dry, dense, poorly graded B SM Silty SAND: medium brown, very fine to coarse grained sand, dry, dense, poorly graded. Boring terminated at 10 feet bgs. Borehole was backfilled with bentonite chips and capped with concrete upon completion of sampling.

23 Boring Number: B3 Page 1 of 1 Location: South of Greywater Discharge Area Date Started: 4/19/2016 Site Address: Indian Avenue & Markham Street Date Completed: 4/19/2016 Perris, California Depth to Groundwater: N/A Project Number: Field Technician: B. Godbois Drill Rig Type: Truck Mounted Direct Push Drill Rig Partner Engineering and Science Sampling Equipment: Acetate liner, plastic syringes 2154 Torrance Boulevard, Suite 200 Borehole Diameter: 1.5" Torrance, California Depth Sample PID USCS Description Notes 1 Dirt at surface. 2 1 B SM Silty SAND: medium brown, very fine to fine grained sand, dry, medium dense, poorly graded B SM Silty SAND: red brown, very fine to coarse grained sand, dry, medium dense, poorly graded B SP SAND: red brown, very fine to coarse grained sand, dry, loose, poorly graded. Boring terminated at 10 feet bgs. Borehole was backfilled with bentonite chips and capped with concrete upon completion of sampling.

24 Boring Number: B4 Page 1 of 1 Location: Northeast of Hazardous Materials Storage Area Date Started: 4/19/2016 Site Address: Indian Avenue & Markham Street Date Completed: 4/19/2016 Perris, California Depth to Groundwater: N/A Project Number: Field Technician: B. Godbois Drill Rig Type: Truck Mounted Direct Push Drill Rig Partner Engineering and Science Sampling Equipment: Acetate liner, plastic syringes 2154 Torrance Boulevard, Suite 200 Borehole Diameter: 1.5" Torrance, California Depth Sample PID USCS Description Notes 1 6" of concrete at surface. 2 1 B ML Sandy SILT: medium brown, very fine to fine grained sand, moist, dense, poorly graded B ML Silty CLAY: medium brown, moist, medium stiff, medium plasticity B CL Sandy CLAY: medium brown, very fine to coarse grained sand, moist, stiff, Boring terminated at 10 feet bgs. Borehole was backfilled with bentonite chips and capped with concrete upon completion of sampling.

25 Boring Number: B5 Page 1 of 1 Location: West of Car Wash Septic System Date Started: 4/19/2016 Site Address: Indian Avenue & Markham Street Date Completed: 4/19/2016 Perris, California Depth to Groundwater: N/A Project Number: Field Technician: B. Godbois Drill Rig Type: Truck Mounted Direct Push Drill Rig Partner Engineering and Science Sampling Equipment: Acetate liner, plastic syringes 2154 Torrance Boulevard, Suite 200 Borehole Diameter: 1.5" Torrance, California Depth Sample PID USCS Description Notes 1 2" of asphalt at surface. 2 1 B ML Sandy SILT: black brown, very fine to fine grained sand, moist, dense, poorly graded B CL Sandy CLAY: medium brown, very fine to fine grained sand, moist, medium stiff, poorly graded B SC Clayey SAND: medium brown, very fine to coarse grained sand, moist, loose, poorly graded. Boring terminated at 10 feet bgs. Borehole was backfilled with bentonite chips and capped with concrete upon completion of sampling.

26 Boring Number: B6 Page 1 of 1 Location: Southeast of Equipment Storage Building Date Started: 4/19/2016 Site Address: Indian Avenue & Markham Street Date Completed: 4/19/2016 Perris, California Depth to Groundwater: N/A Project Number: Field Technician: B. Godbois Drill Rig Type: Truck Mounted Direct Push Drill Rig Partner Engineering and Science Sampling Equipment: Acetate liner, plastic syringes 2154 Torrance Boulevard, Suite 200 Borehole Diameter: 1.5" Torrance, California Depth Sample PID USCS Description Notes 1 2" of asphalt at surface. 2 1 B SC Clayey SAND: medium brown, very fine to fine grained sand, dry, loose, poorly graded B SC Clayey SAND: medium brown, very fine to fine grained sand, dry, medium dense, poorly graded B SC Clayey SAND: medium brown, very fine to coarse grained sand, dry, medium dense, poorly graded. Boring terminated at 10 feet bgs. Borehole was backfilled with bentonite chips and capped with concrete upon completion of sampling.

27 Boring Number: B7 Page 1 of 1 Location: Northeast of Equipment Storage Building Date Started: 4/19/2016 Site Address: Indian Avenue & Markham Street Date Completed: 4/19/2016 Perris, California Depth to Groundwater: N/A Project Number: Field Technician: B. Godbois Drill Rig Type: Truck Mounted Direct Push Drill Rig Partner Engineering and Science Sampling Equipment: Acetate liner, plastic syringes 2154 Torrance Boulevard, Suite 200 Borehole Diameter: 1.5" Torrance, California Depth Sample PID USCS Description Notes 1 Dirt at surface. 2 1 B SP SAND: medium brown, very fine to fine grained sand, dry, loose, poorly graded B SP SAND: medium brown, very fine to fine grained sand, dry, loose, poorly graded B SC Clayey SAND: light brown, very fine to fine grained sand, dry,dense, poorly graded. Boring terminated at 10 feet bgs. Borehole was backfilled with bentonite chips and capped with concrete upon completion of sampling.

28 Boring Number: B8 Page 1 of 1 Location: Southeast Corner of Property Date Started: 4/19/2016 Site Address: Indian Avenue & Markham Street Date Completed: 4/19/2016 Perris, California Depth to Groundwater: N/A Project Number: Field Technician: B. Godbois Drill Rig Type: Truck Mounted Direct Push Drill Rig Partner Engineering and Science Sampling Equipment: Acetate liner, plastic syringes 2154 Torrance Boulevard, Suite 200 Borehole Diameter: 1.5" Torrance, California Depth Sample PID USCS Description Notes 1 Dirt at surface. 2 1 B SC Clayey SAND: medium brown, very fine to coarse grained, dry, loose, poorly graded B SC Clayey SAND: medium brown, very fine to coarse grained, dry, dense, poorly graded B SC Clayey SAND: medium brown, very fine to coarse grained, dry, loose, poorly graded. Boring terminated at 10 feet bgs. Borehole was backfilled with bentonite chips and capped with concrete upon completion of sampling.

29 Boring Number: B9 Page 1 of 1 Location: Southwest Corner of Property Date Started: 4/19/2016 Site Address: Indian Avenue & Markham Street Date Completed: 4/19/2016 Perris, California Depth to Groundwater: N/A Project Number: Field Technician: B. Godbois Drill Rig Type: Truck Mounted Direct Push Drill Rig Partner Engineering and Science Sampling Equipment: Acetate liner, plastic syringes 2154 Torrance Boulevard, Suite 200 Borehole Diameter: 1.5" Torrance, California Depth Sample PID USCS Description Notes 1 Dirt at surface. 2 1 B SP SAND: medium brown, very fine to medium grained sand, dry, loose, poorly graded B SP SAND: dark brown, very fine to fine grained sand, dry, loose, poorly graded B SP SAND: dark brown, very fine to medium grained sand, moist, loose, poorly graded. Boring terminated at 10 feet bgs. Borehole was backfilled with bentonite chips and capped with concrete upon completion of sampling

30 APPENDIX B: LABORATORY ANALYTICAL REPORT

31 Alpha Scientific Corporation Environmental Laboratories Mr. Brian Godbois Partner Engineering & Science 2154 Torrance Boulevard Torrance, CA Project: Project Site: Perris Sample Date: Lab Job No.: PA Dear Mr. Godbois: Enclosed please find the analytical report for the sample(s) received by Alpha Scientific Corporation on and analyzed by the following EPA methods: EPA 8015M (Total Petroleum Hydrocarbons) EPA 8260B (VOCs & Oxygenates by GC/MS) All analyses have met the QA/QC criteria of this laboratory. The sample(s) arrived in good conditions (i.e., chilled, intact) and with a chain of custody record attached. Alpha Scientific Corporation is a CA DHS certified laboratory (Certificate Number 2633). Thank you for giving us the opportunity to serve you. Please feel free to call me at (562) if our laboratory can be of further service to you. Sincerely, Roger Wang, Ph. D. Laboratory Director Enclosures This cover letter is an integral part of this analytical report Gridley Road, Cerritos, CA Phone (562) Asc90703@gmail.com

32 Alpha Scientific Corporation Environmental Laboratories Client: Partner Engineering & Science Lab Job No.: PA Project: Project Site: Perris Date Sampled: Matrix: Soil Date Received: Prepared Method for TPH-g: EPA 5035 Date Prepared: Batch No. for TPH-g: AMD19-GS1 Date Analyzed: Batch No for TPH-d: BD20-DS1 Date Analyzed: Date Reported: Sample ID EPA 8015M (Total Petroleum Hydrocarbons) Reporting Units: mg/kg (ppm) Lab ID Gasoline Range (C4-C12)* Diesel Range (C13-C23) Oil Range (C24-C40) MDL PQL Method Blank ND ND ND B1-2 PA ND ND ND B2-2 PA ND ND ND B3-2 PA ND ND ND B4-2 PA ND ND ND B5-5 PA ND ND ND B6-2 PA ND ND ND B7-2 PA ND ND ND B8-2 PA ND ND ND B9-2 PA ND ND ND * Gasoline Range TPH result is obtained from purge and trap analysis using LUFT GC/MS Method; MDL: Method Detection Limit; PQL: Practical Quantitation Limit; ND: Not Detected (at the specified limit); J: Trace concentration, result between MDL and PQL Gridley Road, Cerritos, CA Phone (562) Asc90703@gmail.com

33 Alpha Scientific Corporation Environmental Laboratories Client: Partner Engineering & Science Lab Job No.: PA Date Reported: Project: Matrix: Soil Date Sampled: EPA 8260B (VOCs by GC/MS, Page 1 of 2) Reporting Unit: µg/kg(ppb) DATE ANALYZED PREP METHOD DILUTION FACTOR (DF) LAB SAMPLE I.D. MB PA PA PA PA PA CLIENT SAMPLE I.D. B1-2 B2-2 B3-2 B4-2 B5-5 COMPOUND MDL PQL Dichlorodifluoromethane 2 5 ND ND ND ND ND ND Chloromethane 2 5 ND ND ND ND ND ND Vinyl Chloride 1 2 ND ND ND ND ND ND Bromomethane 2 5 ND ND ND ND ND ND Chloroethane 2 5 ND ND ND ND ND ND Trichlorofluoromethane 2 5 ND ND ND ND ND ND 1,1-Dichloroethene 2 5 ND ND ND ND ND ND Iodomethane 2 5 ND ND ND ND ND ND Methylene Chloride 5 10 ND ND ND ND ND ND trans-1,2-dichloroethene 2 5 ND ND ND ND ND ND 1,1-Dichloroethane 2 5 ND ND ND ND ND ND 2,2-Dichloropropane 2 5 ND ND ND ND ND ND cis-1,2-dichloroethene 2 5 ND ND ND ND ND ND Bromochloromethane 2 5 ND ND ND ND ND ND Chloroform 2 5 ND ND ND ND ND ND 1,2-Dichloroethane 1 5 ND ND ND ND ND ND 1,1,1-Trichloroethane 2 5 ND ND ND ND ND ND Carbon tetrachloride 1 5 ND ND ND ND ND ND 1,1-Dichloropropene 2 5 ND ND ND ND ND ND Benzene 1 2 ND ND ND ND ND ND Trichloroethene 2 4 ND ND ND ND ND ND 1,2-Dichloropropane 2 5 ND ND ND ND ND ND Bromodichloromethane 2 5 ND ND ND ND ND ND Dibromomethane 2 5 ND ND ND ND ND ND Trans-1,3-Dichloropropene 2 5 ND ND ND ND ND ND cis-1,3-dichloropropene 2 5 ND ND ND ND ND ND 1,1,2-Trichloroethane 2 5 ND ND ND ND ND ND 1,3-Dichloropropane 1 5 ND ND ND ND ND ND Dibromochloromethane 2 5 ND ND ND ND ND ND 2-Chloroethylvinyl ether 2 10 ND ND ND ND ND ND Bromoform 2 5 ND ND ND ND ND ND Isopropylbenzene 2 5 ND ND ND ND ND ND Bromobenzene 2 5 ND ND ND ND ND ND Gridley Road, Cerritos, CA Phone (562) Asc90703@gmail.com

34 Alpha Scientific Corporation Environmental Laboratories Client: Partner Engineering & Science Lab Job No.: PA Date Reported: Project: Matrix: Soil Date Sampled: EPA 8260B (VOCs & Oxygenates by GC/MS, Page 2 of 2)Reporting Unit: µg/kg(ppb) COMPOUND MDL PQL MB B1-2 B2-2 B3-2 B4-2 B5-5 Toluene 1 2 ND ND ND ND ND ND Tetrachloroethene 2 4 ND ND ND ND ND ND 1,2-Dibromoethane(EDB) 2 5 ND ND ND ND ND ND Chlorobenzene 2 5 ND ND ND ND ND ND 1,1,1,2-Tetrachloroethane 2 5 ND ND ND ND ND ND Ethylbenzene 1 2 ND ND ND ND ND ND Total Xylenes 2 4 ND ND ND ND ND ND Styrene 2 5 ND ND ND ND ND ND 1,1,2,2-Tetrachloroethane 2 5 ND ND ND ND ND ND 1,2,3-Trichloropropane 2 5 ND ND ND ND ND ND n-propylbenzene 2 5 ND ND ND ND ND ND 2-Chlorotoluene 2 5 ND ND ND ND ND ND 4-Chlorotoluene 2 5 ND ND ND ND ND ND 1,3,5-Trimethylbenzene 2 5 ND ND ND ND ND ND tert-butylbenzene 2 5 ND ND ND ND ND ND 1,2,4-Trimethylbenzene 2 5 ND ND ND ND ND ND Sec-Butylbenzene 2 5 ND ND ND ND ND ND 1,3-Dichlorobenzene 2 5 ND ND ND ND ND ND p-isopropyltoluene 2 5 ND ND ND ND ND ND 1,4-Dichlorobenzene 2 5 ND ND ND ND ND ND 1,2-Dichlorobenzene 2 5 ND ND ND ND ND ND n-butylbenzene 2 5 ND ND ND ND ND ND 1,2,4-Trichlorobenzene 2 5 ND ND ND ND ND ND 1,2-Dibromo-3-Chloropropane 2 5 ND ND ND ND ND ND Hexachlorobutadiene 2 5 ND ND ND ND ND ND Naphthalene 2 5 ND ND ND ND ND ND 1,2,3-Trichlorobenzene 2 5 ND ND ND ND ND ND Acetone ND ND ND ND ND ND 2-Butanone (MEK) ND ND ND ND ND ND 4-Methyl-2-pentanone (MIBK) ND ND ND ND ND ND 2-Hexanone ND ND ND ND ND ND Carbon disulfide ND ND ND ND ND ND Vinyl Acetate ND ND ND ND ND ND Ethanol ND ND ND ND ND ND MTBE 2 5 ND ND ND ND ND ND ETBE 2 5 ND ND ND ND ND ND DIPE 2 5 ND ND ND ND ND ND TAME 2 5 ND ND ND ND ND ND T-Butyl Alcohol ND ND ND ND ND ND MDL=Method Detection Limit; PQL=Practical Quantitation Limit; MB=Method Blank; ND=Not Detected (below DF MDL); * Obtained from a higher dilution analysis; J=Trace value (between DF MDL & DF PQL) Gridley Road, Cerritos, CA Phone (562) Asc90703@gmail.com

35 Alpha Scientific Corporation Environmental Laboratories Client: Partner Engineering & Science Lab Job No.: PA Date Reported: Project: Matrix: Soil Date Sampled: EPA 8260B (VOCs by GC/MS, Page 1 of 2) Reporting Unit: µg/kg(ppb) DATE ANALYZED PREP METHOD DILUTION FACTOR (DF) LAB SAMPLE I.D. MB PA PA PA PA CLIENT SAMPLE I.D. B6-2 B7-2 B8-2 B9-2 COMPOUND MDL PQL Dichlorodifluoromethane 2 5 ND ND ND ND ND Chloromethane 2 5 ND ND ND ND ND Vinyl Chloride 1 2 ND ND ND ND ND Bromomethane 2 5 ND ND ND ND ND Chloroethane 2 5 ND ND ND ND ND Trichlorofluoromethane 2 5 ND ND ND ND ND 1,1-Dichloroethene 2 5 ND ND ND ND ND Iodomethane 2 5 ND ND ND ND ND Methylene Chloride 5 10 ND ND ND ND ND trans-1,2-dichloroethene 2 5 ND ND ND ND ND 1,1-Dichloroethane 2 5 ND ND ND ND ND 2,2-Dichloropropane 2 5 ND ND ND ND ND cis-1,2-dichloroethene 2 5 ND ND ND ND ND Bromochloromethane 2 5 ND ND ND ND ND Chloroform 2 5 ND ND ND ND ND 1,2-Dichloroethane 1 5 ND ND ND ND ND 1,1,1-Trichloroethane 2 5 ND ND ND ND ND Carbon tetrachloride 1 5 ND ND ND ND ND 1,1-Dichloropropene 2 5 ND ND ND ND ND Benzene 1 2 ND ND ND ND ND Trichloroethene 2 4 ND ND ND ND ND 1,2-Dichloropropane 2 5 ND ND ND ND ND Bromodichloromethane 2 5 ND ND ND ND ND Dibromomethane 2 5 ND ND ND ND ND Trans-1,3-Dichloropropene 2 5 ND ND ND ND ND cis-1,3-dichloropropene 2 5 ND ND ND ND ND 1,1,2-Trichloroethane 2 5 ND ND ND ND ND 1,3-Dichloropropane 1 5 ND ND ND ND ND Dibromochloromethane 2 5 ND ND ND ND ND 2-Chloroethylvinyl ether 2 10 ND ND ND ND ND Bromoform 2 5 ND ND ND ND ND Isopropylbenzene 2 5 ND ND ND ND ND Bromobenzene 2 5 ND ND ND ND ND Gridley Road, Cerritos, CA Phone (562) Asc90703@gmail.com

36 Alpha Scientific Corporation Environmental Laboratories Client: Partner Engineering & Science Lab Job No.: PA Date Reported: Project: Matrix: Soil Date Sampled: EPA 8260B (VOCs & Oxygenates by GC/MS, Page 2 of 2)Reporting Unit: µg/kg(ppb) COMPOUND MDL PQL MB B6-2 B7-2 B8-2 B9-2 Toluene 1 2 ND ND ND ND ND Tetrachloroethene 2 4 ND ND ND ND ND 1,2-Dibromoethane(EDB) 2 5 ND ND ND ND ND Chlorobenzene 2 5 ND ND ND ND ND 1,1,1,2-Tetrachloroethane 2 5 ND ND ND ND ND Ethylbenzene 1 2 ND ND ND ND ND Total Xylenes 2 4 ND ND ND ND ND Styrene 2 5 ND ND ND ND ND 1,1,2,2-Tetrachloroethane 2 5 ND ND ND ND ND 1,2,3-Trichloropropane 2 5 ND ND ND ND ND n-propylbenzene 2 5 ND ND ND ND ND 2-Chlorotoluene 2 5 ND ND ND ND ND 4-Chlorotoluene 2 5 ND ND ND ND ND 1,3,5-Trimethylbenzene 2 5 ND ND ND ND ND tert-butylbenzene 2 5 ND ND ND ND ND 1,2,4-Trimethylbenzene 2 5 ND ND ND ND ND Sec-Butylbenzene 2 5 ND ND ND ND ND 1,3-Dichlorobenzene 2 5 ND ND ND ND ND p-isopropyltoluene 2 5 ND ND ND ND ND 1,4-Dichlorobenzene 2 5 ND ND ND ND ND 1,2-Dichlorobenzene 2 5 ND ND ND ND ND n-butylbenzene 2 5 ND ND ND ND ND 1,2,4-Trichlorobenzene 2 5 ND ND ND ND ND 1,2-Dibromo-3-Chloropropane 2 5 ND ND ND ND ND Hexachlorobutadiene 2 5 ND ND ND ND ND Naphthalene 2 5 ND ND ND ND ND 1,2,3-Trichlorobenzene 2 5 ND ND ND ND ND Acetone ND ND ND ND ND 2-Butanone (MEK) ND ND ND ND ND 4-Methyl-2-pentanone (MIBK) ND ND ND ND ND 2-Hexanone ND ND ND ND ND Carbon disulfide ND ND ND ND ND Vinyl Acetate ND ND ND ND ND Ethanol ND ND ND ND ND MTBE 2 5 ND ND ND ND ND ETBE 2 5 ND ND ND ND ND DIPE 2 5 ND ND ND ND ND TAME 2 5 ND ND ND ND ND T-Butyl Alcohol ND ND ND ND ND MDL=Method Detection Limit; PQL=Practical Quantitation Limit; MB=Method Blank; ND=Not Detected (below DF MDL); * Obtained from a higher dilution analysis; J=Trace value (between DF MDL & DF PQL) Gridley Road, Cerritos, CA Phone (562) Asc90703@gmail.com

37 Alpha Scientific Corporation Environmental Laboratories TPH-Gasoline Batch QA/QC Report Client: Partner Engineering & Science Lab Job No.: PA Project: Matrix: Soil Lab Sample I.D.: PA Batch No.: AMD19-GS1 Date Analyzed: I. MS/MSD Report Unit: ppb Analyte Sample Conc. Spike Conc. MS MSD MS %Rec. MSD %Rec. % RPD %RPD Accept. Limit %Rec Accept. Limit TPH-g ND 1,000 1, II. LCS Result Unit: ppb Analyte LCS Report Value True Value Rec.% %Rec Accept. Limit TPH-g 951 1, ND: Not Detected (at the specified limit) Gridley Road, Cerritos, CA Phone (562) Asc90703@gmail.com

38 Alpha Scientific Corporation Environmental Laboratories EPA 8015M (TPH) Batch QA/QC Report Client: Partner Engineering & Science Lab Job No.: PA Project: Matrix: Soil Lab Sample I.D.: PA Batch No.: BD20-DS1 Date Analyzed: I. MS/MSD Report Unit: ppm Analyte Sample Conc. Spike Conc. MS MSD MS %Rec. MSD %Rec. % RPD %RPD Accept. Limit %Rec Accept. Limit TPH-d ND II. LCS Result Unit: ppm 5alyte LCS Value True Value Rec.% Accept. Limit TPH-d ND: Not Detected (at the specified limit) Gridley Road, Cerritos, CA Phone (562) Asc90703@gmail.com

39 Alpha Scientific Corporation Environmental Laboratories EPA 8260B Batch QA/QC Report Client: Partner Engineering & Science Lab Job No.: PA Project: Matrix: Soil Lab Sample I.D.: AI Batch No: 0419-VOAS1 Date Analyzed: I. MS/MSD Report Unit: ppb Analyte 1,1- Dichloroethene Sample Conc. Spike Conc. MS MSD MS %Rec. MSD %Rec. % RPD %RPD Accept. Limit %Rec Accept. Limit ND Benzene ND Trichloroethene ND Toluene ND Chlorobenzene ND II. LCS Result Unit: ppb Analyte LCS Value True Value Rec.% Accept. Limit 1,1-Dichloroethene Benzene Trichloro-ethene Toluene Chlorobenzene ND: Not Detected (at the specified limit) Gridley Road, Cerritos, CA Phone (562) Asc90703@gmail.com