Report of Investigation Mangrove Site Northeast Corner of 1St and Alameda Streets

REPORT OF INVESTIGATION MANGROVE SITE NORTHEAST CORNER OF 1ST AND ALAMEDA STREETS

REGIONAL CONNECTOR TRANSIT CORRIDOR PROJECT LOS ANGELES, CALIFORNIA

Prepared for:

CONNECTOR PARTNERSHIP JOINT VENTURE 777 SOUTH FIGUEROA STREET, 10 TH FLOOR LOS ANGELES, CALIFORNIA 90017

May 22, 2013 Revised June 28, 2013

AMEC Project 4953-11-0471

May 22, 2013 Revised June 28, 2013 4953-11-0471

William H. Hansmire, Ph.D. Project Manager Connector Partnership Joint Venture 777 South Figueroa Street, 10 th Floor Los Angeles, California 90017

Subject: LETTER OF TRANSMITTAL Updated Report of Investigation – Mangrove Site Northeast Corner of 1 st and Alameda Streets Regional Connector Transit Corridor Project Downtown Los Angeles, California

Dear Dr. Hansmire:

We, AMEC Environment & Infrastructure, Inc. (AMEC) are pleased to submit this updated report presenting the findings of our investigation of the Mangrove site. The existing parking lot at the northeast corner of 1 st Street and Alameda Street is referred to as the Mangrove site, and the site is currently planned to be used as the launch pit for the Tunnel Boring Machine (TBM) during the construction of the tunnels for the proposed Regional Connector Transit Corridor project.

The scope of the investigation was developed based on available information on the site and our discussions with you. The investigation program consisted of a geophysical investigation and drilling one boring to collect environmental and geotechnical soil/rock samples.

Correspondence: AMEC 6001 Rickenbacker Road Los Angeles, California 90040 USA Tel +1 (323) 889 5300 Fax + 1 (323) 889 5398 www.amec.com

REPORT OF INVESTIGATION MANGROVE SITE NORTHEAST CORNER OF 1 ST AND ALAMEDA STREETS

REGIONAL CONNECTOR TRANSIT CORRIDOR PROJECT LOS ANGELES, CALIFORNIA

Prepared for:

CONNECTOR PARTNERSHIP JOINT VENTURE 777 South Figueroa Street, 10 th Floor Los Angeles, California 90017

May 22, 2013 Revised June 28, 2013

AMEC Project 4953-11-0471

Regional Connector – Mangrove Site Investigation May 22, 2013 AMEC Project 4953-11-0471 Revised June 28, 2013

TABLE OF CONTENTS

1.0 INTRODUCTION ...... 1 2.0 BACKGROUND INFORMATION ...... 2 2.1 Site Condition ...... 2 2.2 Prior Usage ...... 2 2.3 Previous Investigations ...... 2 3.0 INVESTIGATION PROGRAM ...... 5 3.1 FIELD WORK PREPARATION ...... 5 3.2 Field Exploration ...... 5 3.2.1 Geophysical Investigation ...... 5 3.2.2 Drilling and Sampling Activities ...... 6 4.0 FINDINGS ...... 8 4.1 Findings of Geophysical Investigation ...... 8 4.2 Subsurface Conditions ...... 8 5.0 GEOTECHNICAL LABORATORY TEST RESULTS ...... 10 5.1 In-place moisture Content and Dry Density Determination ...... 10 5.2 Direct Shear Tests ...... 10 5.3 Grain-size Distribution Analyses ...... 10 5.4 Atterberg Limits ...... 10 6.0 ENVIRONMENTAL LABORATORY TEST RESULTS ...... 13 7.0 LIMITATIONS ...... 18

LIST OF FIGURES Figure 1 Site Vicinity Map 2 Locations of Prior Buildings and Underground Storage Tanks 3 Exploration Plan and Anomalies Detected in Geophysical Investigation

LIST OF APPENDICES APPENDIX APPENDIX A Geophysical Investigation Report by GeoVision APPENDIX B Log of Boring APPENDIX C Geotechnical Laboratory Test Results

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APPENDIX D Analytical Laboratory Report, Chain-of-Custody Documentation for Soil and Groundwater Testing

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1.0 INTRODUCTION

The proposed Regional Connector Transit Corridor (RCTC) project will consist of an underground twin-tunnel light rail line that will connect the Metro Blue/Expo Line to the Metro Gold Line. The project will span the approximately 1.8 mile gap between the existing 7th Street/Metro Center Station, which currently serves as the terminus of the Metro Blue LRT Line/Metro Expo LRT Line, and the Little Tokyo/Arts District LRT Station of the Metro Gold Line.

The existing at-grade parking lot located at the northeast corner of the intersection of 1 st and Alameda Streets in the Little Tokyo District of Downtown Los Angeles is currently planned to be used as the launch pit site for the Tunnel Boring Machine (TBM) that will be used to excavate the tunnels for the RCTC project. The proposed launch pit site is currently owned by the City of Los Angeles, and it is referred to as the Mangrove site and is shown on Figure 1, Vicinity Map. The proposed launch pit is approximately 250 feet long, and is about 60-ft wide at its widest location. The maximum depth of excavation for the launch pit is anticipated to be about 25 feet below existing grade. The existing at- grade transit line will be replaced and connected to the Regional Connector by new underground cut-and-cover structures. The approximate footprint of the launch pit based on current construction staging plan and future underground structures are shown on Figure 2.

The site was previously occupied by the Los Angeles Soap Company. There were one- to five- story buildings on the site which have been demolished. There were also five underground storage tanks which reportedly have been removed. One of the underground tanks containing diesel oil reportedly had leaked in the past.

Because of past industrial use of the site and known history of contamination, there were concerns about the possible presence of contaminants within the excavation zone of the TBM launch pit and the underground cut-and-cover excavations. In addition, some of buildings that were previously present at the site reportedly had basements, demolition of which is not well-documented; therefore, the presence of underground obstructions from the abandoned structures was a concern. The investigation program which consisted of drilling one environmental boring and performing a geophysical investigation, was designed to provide information regarding these concerns.

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2.0 BACKGROUND INFORMATION

2.1 SITE CONDITION

The Mangrove site is located at the northeast corner of the intersection of 1 st and Alameda Streets as shown on Figure 1, Vicinity Map. The site is bound by Temple Street on the north, Alameda Street on the west, 1 st Street on the south, and a Los Angeles Fire Department building on the east. The site is currently used as an at-grade parking lot, and is paved with asphalt concrete. The site is generally level. There is an existing building located near the north end of the site. Some underground utilities cross the site.

2.2 PRIOR USAGE

The Mangrove site was previously occupied by the Los Angeles Soap Company, also known as White King, Inc. There were one- to five- story buildings on the site which have reportedly been demolished circa 1990. These buildings housed the detergent and soap manufacturing operations of the Los Angeles Soap Company. There were also five underground storage tanks (UST) which reportedly have been removed. One of the underground tanks containing diesel oil had reportedly leaked in the past. Banning Street, which at present ends on Vignes Street east of the site, used to traverse the site. The approximate locations of buildings and underground storage tanks based on available information from prior reports are shown on Figure 2.

2.3 PREVIOUS INVESTIGATIONS

AMEC, under the names of LeRoy Crandall and Associates and Law/Crandall, inc. had performed several investigations of the site. The following reports were reviewed as part of our current investigation to collect background information on the site:

• LeRoy Crandall and Associates, 1989, Report of Preliminary Geotechnical Investigation, Proposed Evergreen Project, Alameda Street Between Temple and First Streets, Los Angeles, California for Mangrove Estate B. V ., report dated May 17, 1989 (project No. LCA 89177.AEO) • Leroy Crandall and Associates, 1990 . Summary Report of Environmental Assessment, Proposed Evergreen Project, Former Los Angeles Soap Company Property, Alameda Street Between Temple and First Streets, Los Angeles, California , report dated July 10, 1990 (Project No. LCA L89176.FB). • Leroy Crandall and Associates, 1990. Report of Phase I Environmental Site Assessment, Proposed Evergreen Project, Former Los Angeles Soap Company Property , prepared December 17, 1990. • Leroy Crandall and Associates, 1991. Phase II Environmental Site Assessment, Proposed Mangrove Estate, B.V. Project – Parcel 9 , prepared April 12, 1991 (Project No. LCA L91077.FB).

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• Law/Crandall, Inc, 1992. Report of Restoration of Ground Water Monitoring Wells and Laboratory Testing, Alameda Street between Temple and First Streets , prepared February 5, 1992. A summary of findings from various prior investigations is presented below. The investigation reports are available upon request.

The following information has been gleaned from the summary environmental report dated July 10, 1990:

• Benzene concentration as high as 3.0 micrograms per liter (µg/L) had been detected in groundwater beneath the location of former underground storage tank, UST-4 (see Figure 2). However, up-gradient wells (north and northeast of the launch pit nearer Temple Street) had a higher benzene concentration (4.0 µg/L). The higher benzene concentrations in up-gradient wells were interpreted to be the result of contamination from an up-gradient (off site) source.

• Trace concentrations of chlorinated solvents (TCE, PCE, and 1,2-DCE) were detected in wells at various location within and around the site. The highest concentrations of TCE (31.0 µg/L), PCE (41.0 µg/L) and 1,2-DCE (12.0 µg/L) were detected in up-gradient wells. The concentrations in down-gradient wells (nearer to the launch pit) were less than 5.0 µg/L. The chlorinated solvents within the underlying groundwater were interpreted to be due to regional contamination from off-site sources.

• Total Petroleum Hydrocarbons (TPH) had been detected in soil samples collected near UST-4. Soil in this area contained TPH levels as high as 4,100 milligrams per kilogram (mg/kg). The hydrocarbons were characterized as heavy hydrocarbons and diesel fuel. The approximate vertical and lateral extents of hydrocarbon-contaminated soil was determined (approximately 10,000 cubic yards), and was located north of the launch pit. Furthermore, no TPH concentrations were detected in soil samples collected beneath the additional former USTs located closer to the launch pit.

• Groundwater beneath the Site generally contains elevated concentrations of total dissolved solids (TDS) and chlorides, and locally contains high levels of sulfates and nitrates with concentrations that exceeded the Regional Water Quality Control Board (RWQCB) effluent limitations for the temporary discharge of water into storm drains flowing into the Los Angeles River.

An additional Phase II ESA was performed near an abandoned UST north of the proposed launch pit (Parcel 9, southeast corner of Temple and Alameda Streets) and findings were presented in a report dated April 12, 1991. Based on the assessment, no significant release of fuel hydrocarbons was detected in the vicinity of the abandoned UST.

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Another investigation was performed in 1992 to assess the groundwater conditions at the Mangrove site and to determine if on-site hydrocarbon contamination has affected the groundwater beneath the site. Only one up-gradient well had detectable concentrations of TPH (360 µg/L). This was interpreted to be the result of contamination from up-gradient (off-site) source. The absence of BTEX components in all wells sampled during the investigation, plus their presence in both up-gradient well and wells in the vicinity of the diesel contamination in previous sampling, suggested a decreased supply of contamination from and up-gradient off-site source.

Groundwater analysis for chlorinated hydrocarbons indicated the presence of TCE, PCE, and 1,1,2-TCE within three wells in the northeast half of the site (northeast of the launch pit) with maximum concentrations detected of 66 µg/L, 10 µg/L and 2.0 µg/L, respectively.

The analytical results from the NPDES sampling during the 1992 investigation confirmed the previous analysis, which indicated the groundwater beneath the site generally contains elevated TDS and dewatering operations would require treatment prior to discharge into local storm drains.

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3.0 INVESTIGATION PROGRAM

The main objectives of the investigation program were identification of underground obstructions and determination of the presence of hazardous substances in the subsurface at the proposed location of the TBM launch pit and cut-and-cover construction. A geophysical investigation program was implemented for possible identification of underground objects. An environmental boring was drilled to a depth of 75 feet below ground surface (bgs) to collect soil and groundwater samples. Both environmental and geotechnical samples were collected from the boring to perform appropriate laboratory testing. The approximate boundary of geophysical investigation and the boring location are shown on Figure 3, Exploration Plan.

3.1 FIELD WORK PREPARATION

The field work preparation tasks consisted of preparation of a site-specific health and safety plan that outlined the health and safety procedures to be followed during the fieldwork. As required by the State of California, Underground Service Alert (USA) was notified of the locations of planned exploration at least 48 hours prior to the drilling activities. As an added precaution, a private utility locator (GeoVision) was subcontracted to locate potential conflicts of the underground utilities with exploration using geophysical equipment.

3.2 FIELD EXPLORATION

3.2.1 Geophysical Investigation

A geophysical investigation of the site was performed by GeoVision Inc. under a subcontract with AMEC. As mentioned earlier, the main objective of the geophysical investigation was to identify buried objects such as old building foundations that were possibly left in place when the previous facility was demolished. In addition, the geophysical investigation was used to identify buried utilities at the boring location.

The investigation was conducted on March 23 and 24, 2013. The approximate area of the investigation is shown on Figure 3. The area of investigation was based on the location of proposed TBM launch pit and input from the project team. Due to the interference from the existing chain link fence at the western boundary of the site adjacent to the operating Metro Gold Line, investigation could not be extended westward beyond the fence as originally planned. Geophysical techniques used during this investigation included various electromagnetic (EM) methods, magnetic methods and ground penetrating radar (GPR). These methods complement one another as each responds to different physical properties and has different strengths and limitations.

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Detailed description of the investigation method and findings is included in a report prepared by GeoVision. A copy of the report is included as Appendix A.

3.2.2 Drilling and Sampling Activities

Drilling and sampling of the boring (Boring E2-7) occurred on March 27, 2013. In order to reduce the potential for utility interference during the drilling of boring E2-7, the upper 5 feet of soil was excavated using hand augering equipment. The drilling was performed by Martini Drilling under a subcontract with AMEC. Hollow-stem auger drilling equipment was used to collect soil samples from discrete depths at the boring location. The boring was advanced to a depth of 75 feet bgs. Alternate environmental and geotechnical soil samples were collected at 2½ -foot intervals to the total boring depth.

During sampling activities, the soil samples were logged using the Unified Soil Classification System and screened in the field with a MultiRae Plus portable field instrument which is equipped to detect undifferentiated VOCs and hydrogen sulfide for qualitative analysis. No obvious indications of impacted soils were noted during the field investigation. A slight petroleum odor was noticed in the groundwater collected during the investigation.

The environmental soil samples were collected in 6 inch stainless steel sleeves. The ends of one of the sleeves were covered with Teflon® sheets and capped with plastic end-caps. The remaining sleeves were used for soil classification and field screening purposes. The soil samples to be analyzed for VOCs and total petroleum hydrocarbons as gasoline (TPH-g) were prepared and preserved per EPA Method 5035. This entailed a field preservation method that used laboratory-supplied kits containing 40-ml vials with methanol and/or sodium bisulfate preservative. Within the allotted time required under EPA Method 5035, the sleeve collected and capped for laboratory analysis was used to prepare and preserve soil samples to be analyzed for VOCs and TPH-g. One groundwater sample was also collected. All samples were labeled and placed into a chilled ice chest for transportation to the analytical laboratory. The samples were accompanied by chain-of- custody records and delivered to Advanced Technology Laboratories (ATL) for analyses. ATL is a California certified analytical laboratory located in Signal Hill.

Geotechnical samples were collected in a Crandall sampler. The Crandall sampler is similar to a “Modified California” sampler, but has less sample disturbance thus providing better samples for laboratory testing. The Crandall sample barrel contains six one inch- thick brass rings. A three-dimensional schematic of the Crandall sampler is shown on Figure B-3.

Upon completion of drilling and sampling, the boring was backfilled with a cement- bentonite grout, and the surface was patched with quick setting concrete mix.

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The five selected soil samples (from 10, 20, 30, 45, and 55 foot depths) were analyzed for the following parameters:

• TPH-g by EPA Method 8015M • TPH as diesel/oil (TPH-d/o) by EPA Method 8015M • VOCs and fuel oxygenates by EPA Method 8260B • SVOCs by EPA Method 8270C • Title 22 Metals by EPA Method 6010B/7471A A limited amount of groundwater could be collected from the boring. Therefore, the groundwater sample was analyzed for the following parameters:

• TPH-g by EPA Method 8015M • TPH-d/o by EPA Method 8015M • VOCs and fuel oxygenates by EPA Method 8260B Section 7 contains a more in-depth discussion of the environmental investigation and the results of the laboratory analysis.

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4.0 FINDINGS

4.1 FINDINGS OF GEOPHYSICAL INVESTIGATION

Detailed description of the geophysical investigation and findings of the investigation is presented in a report by GeoVision. A copy of the report is included in Appendix A. A brief summary of the findings is presented in this section.

Several anomalies were detected by the geophysical investigation. The significant ones are shown on Figure 3 and also listed in Table 4-1 below. Detailed discussion is provided in the GeoVision report that is included in Appendix A. One anomaly, designated A-1, is interpreted as being caused by subsurface structure located at a depth between 2 and 4 feet below the ground surface. The data indicates that the buried structure contains at least two levels of reinforcement. Based on available plans of the site from 1990s, it appears that orientation of this anomaly matches with the old Banning Street that used to traverse the site. However, it is unlikely that the street pavement will have two levels of reinforcement. Potholing or excavation of the area will be required to characterize the anomaly further. Two other anomalies, designated A-2 and A-3, are interpreted as being caused by changes in soil properties and are not likely related to subsurface infrastructure.

Table 4-1 Summary of Significant Anomalies Detected in Geophysical Investigation

Anomaly Depth Range below Remarks ground surface A-1 2 – 3 ft Appears to be related to a buried structure A-2 2 – 3 ft Appears to be related to change in soil properties A-3 2 - 3 ft Appears to be related to change in soil properties

In addition, there are several continuous, linear anomalies detected in the Electromagnetic (EM) data. They were interpreted as being caused by underground utilities, such as electric lines or other linear subsurface objects.

It should be noted that geophysical investigation has its limitations. Beyond a depth 8 feet below ground surface, geophysical methods deployed at the site may not accurately detect buried objects. Therefore, encountering buried objects during excavation of the launch pit may not be ruled out.

4.2 SUBSURFACE CONDITIONS

Fill soils were encountered in Boring E2-7 to an approximate depth of 7 feet below the existing ground surface (bgs). The fill soils consist of silty sand with gravel, brick and concrete fragments. The fill could be deeper in other parts of the site.

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The natural soils underlying the fill consisted of alluvial soil. The alluvial soils consisted of loose to very dense poorly to well-graded sand with gravel and cobbles. Gravel and cobble contents increased with depth. Although boulders were not encountered in our current boring, prior explorations of the site as described in Section 2.3 indicated the presence of occasional boulders up to 18 inches in size within the alluvium. Bedrock of the Fernando Formation was encountered below the alluvium at a depth of about 47½ feet bgs.

Groundwater was encountered at a depth of about 46 feet bgs. The groundwater appeared to be perched on top of the bedrock. The log of boring is presented in Appendix B.

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5.0 GEOTECHNICAL LABORATORY TEST RESULTS

Soil samples were collected from Boring E2-7 and selected samples were tested to determine the pertinent static physical characteristics of the soils. The laboratory tests included:

• In-place moisture content (ASTM D 2216) and dry density determination (ASTM D 2937) tests; • Direct shear tests (ASTM D 3080) on Crandall ring samples to determine the shear strength of the materials; • Sieve analyses (ASTM D 422) for grain size distribution and soil classification; • Atterberg Limit tests (ASTM D 4318).

5.1 IN-PLACE MOISTURE CONTENT AND DRY DENSITY DETERMINATION

The field moisture content and dry density of the soil and rock material encountered were determined by performing tests on the relatively undisturbed samples collected in Crandall sampler. The results of the tests are shown on the boring log.

5.2 DIRECT SHEAR TESTS

Direct shear tests were performed on selected undisturbed samples to determine the strength of the soils. The tests were performed after soaking to near saturated moisture content and at various surcharge pressures. The yield-point values determined from the direct shear tests are presented in Appendix C on Figures C-1.

5.3 GRAIN-SIZE DISTRIBUTION ANALYSES

To determine the particle size distribution of the soils and rocks, and to aid in classifying the soils, mechanical sieve analyses were performed on selected samples. The test results are presented in Appendix C on Figure C-2.

5.4 ATTERBERG LIMITS

Atterberg Limit tests were performed on selected samples to determine plasticity of the soil and to aid classifying soils. The results of these tests are presented in Appendix C on Figure C-3.

A summary of geotechnical laboratory test results is presented in Table 5-1.

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Table 5-1 Summary of Geotechnical Laboratory Test Results

Geologic Moisture Dry SPT Crandall Grain Size Atterberg Limit Direct Shear Boring Depth Soil Formatio Content Density Blow Blow No. (feet) Type n (%) (pcf) Count Count Fines φφφ’ Sand (%) LL PI c’ (psf) (%) (degree 5 SM Fill 26 ) 7.5 SM Fill 18 10 SW-SM Alluvium 8 12.5 SW-SM Alluvium 2 119 56 92 8 15 SW-SM Alluvium 34 17.5 SW-SM Alluvium 1.6 124 47 20 SW-SM Alluvium 13 22.5 SW-SM Alluvium 2.6 97 47 30 150 25 SW-SM Alluvium 40 92 8 27.5 SW-SM Alluvium 1.7 118 97 30 SW-SM Alluvium 50/6” 32.5 SW-SM Alluvium 3.1 115 69 E2-7 35 SW-SM Alluvium 81 37.5 SW-SM Alluvium 50 40 SW-SM Alluvium 50/5” 42.5 SW Alluvium 50 45 ML Alluvium 34 15 61 47.5 SW Alluvium 7 118 53 50 Siltstone Fernando 24 2 98 52.5 Siltstone Fernando 27 96 38 55 Siltstone Fernando 23 57.5 Siltstone Fernando 27 96 61 60 Siltstone Fernando 25 62.5 Siltstone Fernando 28.6 94 49 65 Siltstone Fernando 27 42 14

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Geologic Moisture Dry SPT Crandall Grain Size Atterberg Limit Direct Shear Boring Depth Soil Formatio Content Density Blow Blow No. (feet) Type n (%) (pcf) Count Count Fines φφφ’ Sand (%) LL PI c’ (psf) (%) (degree 67.5 Siltstone Fernando 27.9 96 37 ) 70 Siltstone Fernando 38 E2-7 72.5 Siltstone Fernando 22.8 102 47 75 Siltstone Fernando 37 Prepared by: DC 05/20/13 Checked by: AH 05/22/13

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6.0 ENVIRONMENTAL LABORATORY TEST RESULTS

A total of 15 soil samples and one groundwater samples were collected from boring E2-7. Based on field observations and field readings, five selected soil samples and one groundwater sample were submitted for laboratory analysis. The remaining samples were placed on-hold at ATL. The five selected soil samples were submitted to the laboratory and analyzed for the following parameters:

• TPH-g by EPA Method 8015M • TPH as diesel/oil (TPH-d/o) by EPA Method 8015M • VOCs and fuel oxygenates by EPA Method 8260B • SVOCs by EPA Method 8270C • Title 22 Metals by EPA Method 6010B/7471A The one groundwater sample was submitted to the laboratory and analyzed for the following parameters:

• TPH-g by EPA Method 8015M • TPH-d/o by EPA Method 8015M • VOCs and fuel oxygenates by EPA Method 8260B The five soil samples selected for analysis were chosen based on field observations and historical uses near the TBM launch pit. No obvious indications of contamination were observed in the field (i.e., unusual odors, soil discoloration or elevated field reading). Therefore, laboratory samples were chosen at depth intervals thought to be the best representation of soil conditions within the entire pit excavation. The remaining samples were placed on hold at the laboratory. As noted above, a limited amount of groundwater was collected from the boring. The laboratory analytical results are summarized in Tables 6-1 through 6-3 below. Detailed results and the chain of custody form are included in Appendix D.

VOCs

A review of the analytical report shows that VOCs were not present above the respective laboratory practical quantification limits (PQLs) for the 5 soil samples submitted for analysis. VOCs were not present above the respective laboratory PQLs for the one groundwater sample submitted for analysis, except for benzene and toluene. Benzene and toluene was detected with a concentration of 0.78 and 38 micrograms per liter (µg/L), respectively. For comparison purposes, the California Department of Public Health (CDPH) Maximum Contaminant Levels (MCLs) for benzene and toluene are 1 and 150 µg/L, respectively.

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SVOCs

A review of the analytical report shows that SVOCs were not detected above the laboratory PQLs in 5 samples submitted for laboratory analysis.

Title 22 Metals

A review of the analytical report shows that all metals with concentrations above the laboratory PQL were below both the total threshold limit concentration (TTLC) and ten times the soluble threshold limit concentration (10 x STLC) which are classification values listed in the Title 22 California Code of Regulations (CCR) for the characterization of hazardous waste. The metal concentrations reported for the soil samples that were analyzed likely fall within the range of representative of background metal concentrations for soils in the investigation area.

TPH (g/d/o)

TPH-d and TPH-o was detected in one of the five soil samples submitted for analysis with a concentration of 47 and 86 milligrams per kilogram (mg/kg), respectively. TPH-g, TPH-d and TPH-o were not detected above the laboratory PQLs in the one groundwater sample submitted for laboratory analysis.

For comparison purposes, the 1996 California Regional Water Quality Control Board (RWQCB) - Los Angeles Region Interim Site Assessment & Cleanup Guidebook for total petroleum hydrocarbon impacted soils was referenced. The maximum soil screening levels (SSLs) for TPH-impacted soils with carbon ranges of C4 to C12 (gasoline range), C13 to C22 (diesel range), and C23 to C32 (oil range), are 500, 1,000, and 10,000 mg/kg, respectively, if groundwater is within a depth of 20 to 150 feet below the area of TPH- impacted soils. The TPH-d and TPH-o concentrations detected in the soil sample at a depth of 10 feet bgs is well below the respective SSL.

Although no significant amount of contaminant was detected in the current boring, given the findings from our previous investigations, additional investigation of the launch pit area may be required to confirm the findings from the current investigation.

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Table 6-1 Summary of Laboratory Analytical Results for VOCs, SVOCs and TPH in Soil

Semi-Volatile Volatile Organic Organic Compounds (µg/Kg) Total Petroleum Hydrocarbons Compounds and Oxygenates via (mg/Kg) via EPA Method 8015B(M) (µg/Kg) via EPA EPA METHOD 8260B METHOD 8270C DEPTH SAMPLE ID DATE (feet) DRO DRO GRO GRO ORO All VOCs All VOCs All SVOCs SVOCs All

E2-7-10’ 3/27/13 10 ND ND ND (<1.1) 47 86

E2-7-20’ 3/27/13 20 ND ND ND (<95) ND (<10) ND (<10) E2-7-30’ 3/27/13 30 ND ND ND (<0.94) ND (<10) ND (<10) E2-7-45’ 3/27/13 45 ND ND ND (<1.1) ND (<10) ND (<10) E2-7-55’ 3/27/13 55 ND ND ND (<0.82) ND (<10) ND (<10) Prepared by: PK 4/18/13 Checked by: JN 4/19/13 Notes:

ND = Analyte not detected below the Practical Quantitation Limit (PQL) ; shown in parenthesis (<1.1) for Total Petroleum Hydrocarbons. µg/Kg = micrograms per kilogram mg/kg = milligrams per kilogram GRO = Gasoline Range Organics DRO = Diesel Range Organics ORO = Oil Range Organics

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Table 6-2 Summary of Laboratory Analytical Results for Metals in Soil

EPA ICP Metals (mg/Kg) by EPA METHOD 3050B/6010B METHO D 7471 Depth (ft) (ft) Depth SAMPLE ID ID SAMPLE Zinc Lead Lead Silver Nickel Nickel Cobalt Cobalt Barium Copper Copper Arsenic Arsenic Thalium Thalium Mercury Mercury Beryllium Beryllium Antimony Antimony Selenium Cadmium Cadmium Vanadium Vanadium Chromium Chromium Molybdenum Molybdenum

TTLC (mg/kg) 500 500 10,000 75 100 2,500 8,000 2,500 1,000 3,500 2,000 100 500 700 2,400 5,000 20

STLC (mg/L) 15 5.0 100 0.75 1.0 5 80 25 5.0 350 20 1.0 5 7.0 24 250 0.2

ND ND ND ND ND ND ND E2-7-10’ 10 1.2 100 11 5.2 16 39 6.1 18 80 0.31 (<2.0) (<0.99) (<1.0) (<1.0) (<1.0) (<1.0) (<1.0) ND ND ND ND ND ND ND ND ND E2-7-20’ 20 100 5.7 4.2 14 1.4 4.1 15 31 (<2.0) (<1.0) (<1.0) (<1.0) (<1.0) (<1.0) (<1.0) (<1.0) (<0.10) ND ND ND ND ND ND ND E2-7-30’ 30 220 7.9 3.4 16 1.2 1.1 5.0 11 19 0.10 (<2.0) (<1.0) (<1.0) (<1.0) (<1.0) (<1.0) (<1.0) ND ND ND ND ND ND ND ND ND ND ND ND E2-7-45’ 45 18 6.9 53 1.8 53 (<2.0) (<1.0) (<1.0) (<1.0) (<1.0) (<1.0) (<1.0) (<1.0) (<1.0) (<1.0) (<1.0) (<0.10) ND ND ND ND ND ND ND E2-7-55’ 55 7.2 140 24 9.0 52 5.4 18 38 65 0.12 (<2.0) (<1.0) (<1.0) (<1.0) (<1.0) (<1.0) (<1.0) Prepared by: PK 4/18/13 Checked by: JN 4/19/13 Notes : ND = Analyte not detected; below the Practical Quantitative Limit (PQL) mg/Kg = milligrams per kilogram TTLC = total threshold limit concentration STLC = soluble threshold limit concentration

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Table 6-3 Summary of Laboratory Analytical Results for VOCs and TPH in Groundwater

Volatile Organic Compounds Total Petroleum Hydrocarbons (µg/L) and Oxygenates via EPA (mg/L) via EPA Method METHOD 8260B and 8021B 8015B(M)

DEPTH TO GROUNDWATER SAMPLE ID DATE (feet below ground surface) DRO DRO GRO GRO ORO Toluene Toluene Benzene Benzene All Other VOCs AllOther

ND ND ND E2-7-GW 3/27/13 46 0.78 38 ND (<0.20) (<1.0) (<1.0)

Prepared by: PK 4/18/13 Checked JN 4/19/13 Notes: ND = Analyte not detected; below the Practical Quantitative Limit (PQL) mg/Kg = milligrams per kilogram GRO = Gasoline Range Organics DRO = Diesel Range Organics ORO = Oil Range Organics

Regional Connector – Mangrove Site Investigation May 22, 2013 AMEC Project 4953-11-0471

7.0 LIMITATIONS

Our professional services have been performed using that degree of care and skill ordinarily exercised, under similar circumstances, by reputable geotechnical consultants practicing in this or similar localities. No other warranty, express or implied, is made as to the professional advice included in this report. This report has been prepared for Metro, Connector Partnership and their design consultants to be used solely in the design of the proposed Regional Connector. This report has not been prepared for use by other parties, and may not contain sufficient information for purpose of other parties or other uses.

FIGURES

Explanation Existing Station Proposed Station Proposed Metro Regional Connector Alignment Existing Metro Blue Line Existing Metro Red and Purple Lines r te n e C ic iv C 2nd/Hope Station Connect to Existing Gold Line

2 nd /B S ro DOWNTOWN LOS ANGELES ta ad tio w n ay d x m . y t i n i c i V _

e MANGROVE v o r SITE g n e

a r a M u _ q 1 S _ e g r n u i g

i h s F 7t r _ h e 1 /M P 7 e 4 tr 0 o ral 1 C ent 1 /C

\ t en 1s n $ S io I te Stat

G r

\ Connect to Existing r o t Gold Line c e n n o C _ l a n o i g e R _ 1 7 4 0

1 AMEC 1

\ Environment & Infrastructure, Inc

1 6001 Rickenbacker Road 1 Los Angeles, CA 90040 0

2 Ph. 323-889-5300 * FAX. 323-721-6700 \ h c e t FIGURE 1 - Site Vicinity Map o

e I Metro Regional Connector - Mangrove Site G

_ Los Angeles, California 3

5 4953-11-0471

9 APPROXIMATE SCALE

4 5-3-13 5/15/2013 3:40:21 PM \ : 1 inch = 500 feet G 0 500 1,000 2,000

: PER h t Feet NOTE: DC a Copyright: ©2012 Esri, DeLorme, NAVTEQ P Proposed Alignment Based on CADD drawings from CPJV dated March 23, 2012 ALAMEDA STREET CUT-AND-COVER 2 - STORY CONCRETE BUILDING UST-5 1 - STORY BRICK UST BUILDING

1 - STORY CONCRETE BUILDING

1 - STORY BRICK BUILDING UST-4

BANNING STREET (NOW ABANDONED)

5 - STORY 2 - STORY CONCRETE 4 - STORY BRICK BUILDING BRICK BUILDING BUILDING 5 - STORY CONCRETE BUILDING PROPOSED 4 - STORY TBM LAUNCH BRICK PIT BUILDING UST-2 2 - STORY 1 - STORY 3 - BRICK STORY BUILDING BRICK BRICK UST-3 BUILDING 1 - STORY BUILDING BRICK BUILDING UST-1

3 - STORY 1 - STORY BRICK BRICK BUILDING BUILDING 1 - STORY BRICK BUILDING

NOTE: Building and undergroundstorage tank information based on AMEC report dated July 10, 1990 (under the name of LeRoy Crandall & Associates). REGIONAL CONNECTOR TRANSIT CORRIDOR LEGEND Los Angeles, California

FIGURE NO. E2-7 BORING LOCATION PREPARED BY PE: MAW SCALE: 1" = 80' APPROXIMATE BOUNDARY OF THE MANGROVE SITE 0 40' 80' 160' APPROXIMATE LOCATIONS DRAWN: VMN OF PRIOR BUILDINGS AND PRIOR BUILDINGS AMEC CHKD: D. Chaudhuri SCALE: 1" = 80' Environment & Infrastructure, Inc. PROJECT NO. 6001 Rickenbacker Road, Los Angeles, CA 90040 PM: D. Chaudhuri UNDERSTORAGE TANKS UST PRIOR UNDERGROUND STORAGE TANK Phone (323) 889-5300 Fax (323) 721-6700 DATE: 6/28/2013 4953-11-0471 Path: G:\4953_Geotech\2011\110471_Regional_Connector\CAD\Larrys-Work\Mangrove\4953-11-0471_Fig-2_Understorage(13.06.20).dwg [Fig-2] Date: June 28, 2013 - 10:47am By: vo.nguyen SUMMARY OF ANOMALIES DETECTED IN GEOPHYSICAL INVESTIGATION Depth Range below Anomaly Remarks ground surface A-1 2 - 3 ft Appears to be related to a buried structure A-2 2 - 3 ft Appears to be related to change in soil properties A-3 2 - 3 ft Appears to be related to change in soil properties

ALAMEDA STREET CUT-AND-COVER

PROPOSED TBM LAUNCH PIT

LEGEND REGIONAL CONNECTOR TRANSIT CORRIDOR Los Angeles, California E2-7 BORING LOCATION PREPARED BY PE: MAW FIGURE NO. APPROXIMATE BOUNDARY OF THE MANGROVE SITE SCALE: 1" = 80' 0 40' 80' 160' EXPLORATION PLAN AND DRAWN: VMN APPROXIMATE BOUNDARY OF GEOPHYSICAL SURVEY AREA ANOMALIES DETECTED IN AMEC CHKD: D. Chaudhuri SCALE: 1" = 80' Environment & Infrastructure, Inc. PROJECT NO. 6001 Rickenbacker Road, Los Angeles, CA 90040 PM: D. Chaudhuri GEOPHYSICAL INVESTIGATION ANOMALIES DETECTED IN GEOPHYSICAL INVESTIGATION Phone (323) 889-5300 Fax (323) 721-6700 DATE: 6/28/2013 4953-11-0471 Path: G:\4953_Geotech\2011\110471_Regional_Connector\CAD\Larrys-Work\Mangrove\4953-11-0471_Fig-3_Exploration(13.06.20).dwg [Fig-3] Date: June 28, 2013 - 10:21am By: vo.nguyen

APPENDIX A GEOPHYSICAL INVESTIGATION REPORT by GEOVISION, Inc.

REPORT GEOPHYSICAL INVESTIGATION

Alameda Street and East 1st Street Los Angeles, California

GEOVision Project No. 13089

Prepared for:

AMEC 6001 Rickenbacker Road Los Angeles, California 90040 (323) 889-5300

Prepared by:

GEOVision Geophysical Services, Inc. 1124 Olympic Drive Corona, CA 92881 (951) 549-1234

April 5, 2013 TABLE OF CONTENTS

1 INTRODUCTION...... 1 2 GEOPHYSICAL TECHNIQUES...... 2 2.1 ELECTROMAGNETIC METHODS...... 2 2.2 MAGNETIC METHOD ...... 3 2.3 GROUND PENETRATING RADAR ...... 4 3 FIELD PROCEDURES...... 5 3.1 SITE PREPARATION...... 5 3.2 GEONICS EM-61 SURVEY...... 5 3.3 GEONICS EM-31 SURVEY...... 5 3.4 GEOMETRICS G858 MAGNETOMETER SURVEY ...... 6 3.5 GSSI SIR-3000 GPR SURVEY...... 6 4 DATA PROCESSING AND INTERPRETATION...... 7 4.1 DATA PROCESSING...... 7 4.1.1 EM and Magnetic Data Processing...... 7 4.1.2 GPR Data Processing...... 8 4.2 INTERPRETATION...... 8 5 RESULTS ...... 10 6 CERTIFICATION...... 11

LIST OF FIGURES

FIGURE 1 SITE MAP WITH GEOPHYSICAL INTERPRETATION FIGURE 2 EM61MK2A CH3 RESPONSE FIGURE 3 EM-31 CONDUCTIVITY RESPONSE FIGURE 4 GPR TIME/DEPTH SLICE 15.5-21 NS (~2-3 FT)

APPENDIX A GEOPHYSICAL TECHNIQUES FOR SHALLOW ENVIRONMENTAL INVESTIGATIONS

13089 AMEC i April 5, 2013 1 INTRODUCTION A geophysical investigation was conducted on March 23rd and 24th, 2013 in a parking lot on the corner of Alameda Street and East 1st Street in Los Angeles, California. The purpose of the investigation was to screen the approximate 2 ¼ acre site for former building footings and other subsurface metallic structures.

The site consisted of an asphalt paved parking lot bound by a chain link fence. Surficial features at the site that affected the geophysical data included chain link fencing, metal bollards and light poles.

Geophysical techniques used during this investigation included various electromagnetic (EM) methods, magnetic methods and ground penetrating radar (GPR). These methods complement one another as each responds to different physical properties and has different strengths and limitations.

Geophysical techniques used during the investigation are discussed in Section 2. Field procedures are described in Section 3. Data processing and interpretation are discussed in Section 4. The results of the geophysical survey are presented in Section 5 and our professional certification is presented in Section 6.

13089 AMEC 1 April 5, 2013 2 GEOPHYSICAL TECHNIQUES This section presents background information on the EM and magnetic methods used during this investigation. A description of the geophysical methods used during this investigation, common applications of the methods, photographs of the instruments and example applications are included in Appendix A.

2.1 Electromagnetic Methods EM equipment used during this investigation consisted of a Geonics EM-31 Terrain Conductivity Meter (EM-31) and a Geonics EM-61 Mk2A high-resolution digital metal detector (EM-61). The EM-31 consists of a transmitter and receiver coil, one at each end of a 12-foot long boom. An alternating current is applied to the transmitter coil, causing the coil to radiate a primary EM field. This primary field generates eddy currents in subsurface materials, which give rise to a secondary EM field. The EM-31 measures the components of the secondary EM field both in-phase and 90-degrees out-of-phase with the primary EM field. The out-of-phase component is converted to apparent conductivity in millisiemens per meter (mS/m) and the in-phase component is measured as parts per thousand (ppt) of the primary EM field. A negative EM-31 response with positive shoulders is generally observed over shallow, buried metallic objects. When the instrument boom is orientated parallel to a long, linear conductor such as a pipe a positive response centered over the conductor is typically observed. The EM-31 must pass directly over or immediately adjacent to a buried metallic object to detect it. Because of the 12-foot separation between the transmitter and receiver coils, the EM-31 cannot detect very small, buried metallic objects. Approximately 70% of the EM-31 conductivity response arises from material in the upper 18 feet; however, the instrument is most sensitive to materials in the upper 5 feet.

The EM-61 has a single transmitter and two receiver coils. The bottom coil is the transmitter during the current on-time and receiver during current off-time. The top-coil, mounted 40- cm above the bottom coil, is a receiver coil only. The transmitter and receiver electronics controls are mounted on a backpack or on the instrument handle and a hand-held data logger is used to store field measurements. During operation, a half-duty cycle waveform is applied to the transmitter coil. During the off-time, the receiver coils measure the decay of eddy currents, in millivolts (mV), produced in subsurface metallic objects by the pulsed primary EM field. The top coil is gained in such a manner that the instrument response to a metallic object lying on the surface will be approximately equal at both the top and bottom coils. The effects of surface debris can, therefore, be suppressed by calculating the differential response (subtraction of the bottom coil from top coil response). Positive EM-61 anomalies centered over the source are typically observed over buried metallic objects. Above ground metallic objects will often give rise to a negative differential response, as the top coil response is larger than the bottom coil response.

13089 AMEC 2 April 5, 2013 2.2 Magnetic Method The magnetometer used during this investigation consisted of a Geometrics G858 optically pumped cesium-vapor magnetometer (G858). This instrument measures the intensity of the earth's magnetic field in nanoteslas (nT) and, optionally, the vertical gradient of the earth’s magnetic field in nanoteslas per meter (nT/m). The vertical magnetic gradient is calculated by measuring the total magnetic field with two sensors at different heights, subtracting the top sensor reading from the bottom sensor reading, and dividing by the sensor separation. The vertical magnetic gradient has better lateral resolution than total magnetic field measurements and is less sensitive to deep (e.g. geologic) structure.

The earth’s magnetic field is believed to originate in convection currents in the earth’s liquid outer core. The magnetic field varies in intensity from about 25,000 nT at the equator, where it is parallel to the earth’s surface, to about 70,000 nT at the poles where it is perpendicular to the earth’s surface. The intensity of the earth’s magnetic field in North America varies from about 48,000 to 60,000 nT, and has an associated inclination that varies from about 60 to 75 degrees.

The earth’s magnetic field undergoes low-frequency diurnal variations (drift) caused by the earth’s rotation. The magnetic field can also undergo short-period, high-amplitude variations during periods of sunspot activity called magnetic storms. Often magnetic field intensity can be so variable during a magnetic storm that meaningful magnetic data cannot be acquired. When necessary to correct for magnetic drift a base station magnetometer is set up in a quiet portion of the site and programmed to record total magnetic field intensity at fixed increments (i.e. 5-second intervals) throughout the day. This base station data is then used to remove the effects of drift from the field data. In small survey areas where the data is acquired over a small amount of time and the anomalies have large amplitudes correction for magnetic drift is not necessary.

Buried ferromagnetic objects give rise to local perturbations (anomalies) in the earth’s magnetic field. In North America, an oil well typically gives rise to a very high amplitude, positive magnetic anomaly with the maximum response (peak) about 1- foot, or more, south of the well. Other buried ferrous metallic objects; such as pipes, drums, tanks, and debris, generally give rise to dipolar anomalies with a positive response south of the object and a negative response north of the object. The dimensions and amplitude of a magnetic anomaly are a function of the size, mass, depth and magnetic properties of the source. The magnetic anomaly over a buried oil well often has a diameter of over 50 feet and amplitude of several thousand nanoteslas, depending on depth and casing characteristics. A magnetometer can typically locate an abandoned oil well to a depth of over 20 feet providing background noise levels are not too high and the well casing is not significantly corroded. Magnetometers are not able to detect nonferrous metals such as aluminum or brass.

Typical applications of the magnetic method include:

 Locating pits and trenches containing ferrous metallic debris.  Locating buried drums, tanks and pipes.  Delineating boundaries of landfills containing ferrous debris.

13089 AMEC 3 April 5, 2013  Locating abandoned steel well casing.  Detecting unexploded ordnance.  Mapping basement faults and geology.  Mapping archeological sites.

Some advantages of magnetic surveys are:

 Rapid – modern instruments can acquire up to 10 readings per second as the operator walks down survey lines.  Depth of investigation – magnetometers can often locate buried ferrous metallic objects to greater depths than other methods.  Anomalies are much larger than the source allowing for larger line spacing in some situations.

Some limitations of the magnetic surveys are:

 Unable to detect non-ferrous metals such as aluminum or brass.  Magnetic anomalies are unsymmetrical and much larger than the source and it can, therefore, be difficult to determine the precise locations and size of the source.  Ineffective in areas having extensive metallic debris at the surface, as no distinction can be made between anomalies caused by surface and buried debris.  Metallic structures such as buildings, fences, reinforced concrete and light posts interfere with the measurements.  High voltage power lines can often strongly interfere with the measurements.  Data can be very noisy in areas containing volcanic rock, specifically basalt.

2.3 Ground Penetrating Radar The ground penetrating radar (GPR) equipment used during this investigation consisted of a Geophysical Survey Systems, Inc. (GSSI) SIR-3000 GPR system with a 400-MHz antenna. A GPR antenna transmits high-frequency electromagnetic (EM) waves into the ground. A portion of the energy is reflected back to the surface at the interface of two materials with different electrical properties and it is received at the antenna. High-amplitude, hyperbolic reflections are generally observed on GPR records over buried metallic objects. GPR depth penetration is a function of the electrical conductivity of subsurface soils and the center frequency of the antenna. Depth penetration is very limited in fine-grained soils such as clay. Low frequency antennas achieve greater depth penetration than high frequency antennas at the expense of resolution. At typical sites in California, depth penetration of a 400-MHz antenna is limited to about 3 to 5 feet.

13089 AMEC 4 April 5, 2013 3 FIELD PROCEDURES This section describes the field procedures used during the investigation, including site preparation, EM-61, EM-31, magnetometer and GPR methods.

3.1 Site Preparation Before conducting the geophysical investigation, the extents of the survey area were established by a representative from AMEC and a 10- by 10-foot survey grid was established and marked with surveyors paint. Obvious surface cultural features that could potentially affect the geophysical data (i.e. chain link fences, light poles, and other surface metallic objects) were identified in the field and plotted onto a scaled, hand-drawn site map. The surveyed grid and interpretations of the geophysical survey were tied to the State Plane Coordinate System using a Trimble ProXRS GPS system with OmniSTAR submeter differential corrections. The coordinates are presented in California State Plane NAD83, Zone V (0405), US survey feet. A site map, transcribed from the hand drawn map, showing the location of the geophysical survey area, geophysical survey coordinate system, interpretations and surficial features, as tied to the State Plane coordinate system, is presented as Figure 1.

3.2 Geonics EM-61 Survey The EM-61 was assembled and battery levels were checked and found to be within acceptable levels. The EM-61 digital data logger was then programmed with the appropriate file name, line number, start station, station increment and direction. Changes in these parameters were made as necessary throughout the survey. EM-61 measurements were made at 2.5-foot intervals along S-N survey lines spaced 5 feet apart using the 10-foot grid points for spatial control. The EM-61 data were stored in a digital data logger along with line and station number. If an error was made acquiring a line, a note was made in the field log and the line repeated. EM-61 data were downloaded to a laptop computer at the end of the survey using the computer program DAT61W by Geonics Ltd.

3.3 Geonics EM-31 Survey The EM-31 was assembled and battery levels were checked and found to be within acceptable levels. The in-phase component was then set to zero in a portion of the site with no buried metallic objects. The EM-31 digital data logger was then programmed with the appropriate file name, line number, start station, station increment and direction. Changes in these parameters were made as necessary throughout the survey. EM-31 measurements of conductivity and in-phase component were made at 5-foot intervals along S-N survey lines spaced 5 feet apart using the 10-foot grid points for spatial control. The EM-31 data were stored in a digital data logger along with line and station number. If an error was made acquiring a line, a note was made in the field log and the line repeated. EM-31 data were downloaded to a laptop computer at the end of the survey using the computer program DAT31W by Geonics Ltd.

13089 AMEC 5 April 5, 2013 3.4 Geometrics G858 Magnetometer Survey Prior to data acquisition, the G858 was programmed with the appropriate line number, direction, sampling interval, and control point spacing. Changes in these parameters were made as necessary during the survey. Measurements of the earth's total magnetic field and vertical magnetic gradient were made at 0.2-second intervals as the operator walked along S- N survey lines spaced five (5) feet apart. The 10-foot grid points were used for spatial control. A marker key on the instrument was depressed every time a 10-foot control point was crossed and linear interpolation was used to assign station positions to the intermediate readings. The 0.2-second sampling interval resulted in an average station spacing of about 0.5 feet. The magnetic data were stored in the internal memory of the magnetometer, along with line and station number, and time of measurement. If a location error was made on a survey line (station mark skipped, etc.) the line was deleted from the magnetometer's internal memory and reacquired. Magnetic data were downloaded to a laptop computer at the end of the survey using the program MAGMAP 2000 by Geometrics, Inc.

3.5 GSSI SIR-3000 GPR Survey The SIR-3000 ground penetrating radar (GPR) system was assembled and tested to obtain site appropriate settings for data collection. GPR data were collected at 5-foot intervals along S-N and W-E survey lines spaced 5 feet apart using the 10-foot grid points for spatial control. Spatial data, such as the beginning and ends of each traverse, were noted in a field log. Distance information were recorded by the attached survey wheel. If an error was made acquiring a line, a note was made in the field log and the line repeated. GPR data were then copied to an external storage device for later processing.

13089 AMEC 6 April 5, 2013 4 DATA PROCESSING AND INTERPRETATION This section presents the data processing procedures and interpretation of the geophysical data.

4.1 Data Processing 4.1.1 EM and Magnetic Data Processing Color-enhanced contour maps of the EM and magnetic data were generated using the GEOSOFT® Oasis montaj TM geophysical mapping system. The maps were color-enhanced to aid in the interpretation of subtle anomalies. Prior to map generation, a number of preprocessing steps were completed and included:

 Backup of all original field data files to computer.  Correcting of all data acquisition errors (typically only deleting the first portion of a reacquired line, renaming lines incorrectly labeled, deleting additional readings outside the grid, etc.).  Reformatting field data files to free format XYZ files containing line number, station, time (if applicable), and field measurements.  Applying small adjustments to EM-61 and EM-31 station locations to compensate for data being recorded while the operator was walking.  Merging of multiple data files into a single file and sorting, if necessary.

These data adjustments were made using a combination of commercial and in-house software. All adjustments made to data files and resulting file names were documented and are retained in project files.

The outputs of the data preprocessing were data files containing the various data measurements. The EM-31 data file contained conductivity and in-phase response. The EM- 61 data file contained four time gates and the differential response. The third time gate, referred to as the bottom coil, is typically used for interpretation. The magnetic data contained total field response, bottom sensor response and vertical gradient response. Data processing steps included the following:

 Reformatting of data files to GEOSOFT® format.  Generating final map scale.  Gridding data using down- and cross-line splines or minimum curvature.  Masking grid in areas where data not acquired (i.e. around site perimeter or building).  Applying Hanning filter to smooth the data, as necessary.  Generating color zone file describing color for different data ranges.  Contouring the data.  Generating map surrounds (title block, legend, scale, color bar, north arrow, etc.).  Annotating anomalies.  Merging various plot files and plotting final map.

13089 AMEC 7 April 5, 2013 The names of the files generated and the processing parameters used were documented and are retained in project files. All files generated during the processing sequence were archived on a backup drive.

4.1.2 GPR Data Processing GPR data were processed using the program GPR-Slice v7 by Geophysical Archaeometry Laboratory, Inc. After the data were downloaded from the GPR unit, raw data were imported into GPR-Slice. Processing included the following steps:

 Create info file(s) that contain(s) spatial information for each traverse.  Editing info file(s) to account for collection in reverse direction or varying geometry.  Merging multiple info files into a primary info file, as necessary.  Convert data into program compatible 16 bit format.  Batch gain and remove data wobble.  Create navigational notations for slicing using artificial or field markers.  Apply filters such as Hilbert or boxcar, as necessary.  Apply deconvolution and migration, as necessary.  Slice/resample data using multiple time slices of chosen time thickness and overlap.  Output time data into XYZ coordinates for gridding and presentation.

Color-enhanced contour maps of the GPR time slices were generated using the GEOSOFT® Oasis montaj TM geophysical mapping system. Data processing steps included the following:

Additionally, to further characterize anomalies interpreted in the GPR time slice data, selected radargrams were converted to bmp format for review.

4.2 Interpretation Color-enhanced contour maps of the EM-61 channel 3 response and the EM-31 conductivity response are presented as Figures 2 and 3, respectively. Color-enhanced contour maps of the magnetic response, the EM-31 in-phase response and the EM-61 differential response were also generated. These maps are not presented as they did not reveal additional information and were, therefore, considered redundant. The coordinates shown on these figures reference the relative geophysical coordinate system. The color bar indicates the amplitude of the measured quantity with the magenta and cyan colors representing high and low amplitudes,

13089 AMEC 8 April 5, 2013 respectively. The light orange, yellow and light green colors indicate average "background" values of the measured quantity. A color-enhanced contour map of the GPR time/depth slice for 15.5 to 21 ns is presented as Figure 4. Selected radargrams over interpreted anomalies are presented as Figure 5. Color-enhanced contour maps for other time/depth slice ranges were also generated but are not presented as they did not reveal additional information and were, therefore, considered redundant. The coordinates shown on time/depth slice reference the relative geophysical coordinate system. The color bar indicates the amplitude of the measured quantity with the yellow and cyan colors representing high and low amplitudes, respectively. The dark blue and dark orange colors indicate average "background" values of the measured quantity.

Several surface anomalies imaged in the data were caused by fencing, structures and other metallic objects. These anomalies are labeled with “SM” on the respective contour maps.

There are numerous linear anomalies in the EM data that are interpreted as being caused by buried pipelines or other subsurface linear objects. These anomalies are marked with “P” on each of the color contour maps. Most of the interpreted linear objects are electric lines likely related to the overhead lights on site. Discontinuous segments, such as imaged in the northeastern portion of the survey area, may be related to former infrastructure or possible pipe segments.

There are three significant anomalies, A-1, A-2 and A-3, that require further discussion. Anomaly A-1 is imaged in the EM and GPR data and may continue outside the survey area in the west central portion of the site. A-1 has a very strong EM-61 CH3 response (Figure 2) and a very strong EM-31 conductivity response (Figure 3). Additionally, the GPR time/depth slice data for A-1 shows very strong reflectivity (Figure 4). Review of radargrams of A-1 (Figure 5) indicate a buried structure that contains at least two levels of reinforcement. A-1 is likely related to material/debris or footings from a former building on site.

Anomalies A-2 and A-3 were not imaged in the EM-61 CH3 data (Figure 2) or in the EM-31 conductivity data (Figure 3), but were imaged in the GPR time/depth slice data (Figure 4). Further review of the radargrams (Figure 5) indicate that the sources of these anomalies are related to sudden changes in reflectivity of the surbsurface, such as changes in soil properties. These anomalies are likely not related to subsurface infrastructure.

There are several other responses imaged in the EM and GPR data that may be related to small pieces of construction debris or other metallic objects. However, these anomalies were not marked as they were considered too small for the purposes of this survey.

13089 AMEC 9 April 5, 2013 5 RESULTS A geophysical investigation was conducted near the corner of Alameda Street and East 1st Street in Los Angeles, California. The purpose of the investigation was to screen the approximate 2 ¼ acre site for former building footings and other subsurface metallic structures.

There are several continuous, linear anomalies in the EM data that are interpreted as being caused by underground utilities, such as electric lines or other linear subsurface objects.

One anomaly, A-1 is interpreted as being caused by subsurface infrastructure, such as footings or other material related to former buildings. Two anomalies, A-2 and A-3, are interpreted as being caused by changes in soil properties and are not likely related to subsurface infrastructure.

The geophysical survey was designed to locate all significant buried metallic objects 10 ft in diameter, or larger. It is our opinion that the geophysical survey was appropriately designed to locate all such objects less than about 8 feet deep; except in portions of the survey area where data was affected by subsurface utilities or surface structures, such as surface debris, fences, and other large surface metallic objects.

13089 AMEC 10 April 5, 2013 6 CERTIFICATION All geophysical data, analysis, interpretations, conclusions, and recommendations in this document have been prepared under the supervision of and reviewed by a GEOVision California Registered Geophysicist.

Prepared by

04/05/2013 William Dalrymple, P.Gp. 1072 Date Senior Project Geophysicist GEOVision Geophysical Services

 This geophysical investigation was conducted under the supervision of a California Professional Geophysicist using industry standard methods and equipment. A high degree of professionalism was maintained during all aspects of the project from the field investigation and data acquisition, through data processing interpretation and reporting. All original field data files, field notes and observations, and other pertinent information are maintained in the project files and are available for the client to review for a period of at least one year.

A professional geophysicist’s certification of interpreted geophysical conditions comprises a declaration of his/her professional judgment. It does not constitute a warranty or guarantee, expressed or implied, nor does it relieve any other party of its responsibility to abide by contract documents, applicable codes, standards, regulations or ordinances.

13089 AMEC 11 April 5, 2013

FIGURES

TRAVERSE 300E (S-N)

0 0 A-3 10

2 20 DEPTH (NS) 30 4

40 20 40 60 80 100 120 140 160 180 200 220 240 260 280 300 320 340 DISTANCE (FT) APPROXIMATE DEPTH (FT ~8 NS/FT)

TRAVERSE 240N (W-E)

0 0 A-1 A-2

2 20 DEPTH (NS) 30 4 FIGURE 5 SELECT RADARGRAMS 40 OVER ANOMALIES A-1, A-2 AND A-3 Project No. 13089 150 170 190 210 230 250 270 290 310 330 350 ALAMEDA ST AND EAST 1ST ST APPROXIMATE DEPTH (FT ~8 NS/FT) Date: APR 4, 2013 DISTANCE (FT) LOS ANGELES, CALIFORNIA Drawn By: DALRYMPLE Approved By: MARTIN PREPARED FOR File C:\GVPROJECTS\13089\F5.cdr AMEC APPENDIX A

APPENDIX B BORING LOG

GROUP MAJOR DIVISIONS SYMBOLS TYPICAL NAMES Undisturbed Sample Auger Cuttings Well graded gravels, gravel - sand CLEAN GW mixtures, little or no fines. Split Spoon Sample Bulk Sample GRAVELS GRAVELS (Little or no fines) Poorly graded gravels or grave - sand (More than 50% of GP mixtures, little or no fines. Rock Core Crandall Sampler coarse fraction is LARGER than the GRAVELS GM Silty gravels, gravel - sand - silt mixtures. Dilatometer Pressure Meter COARSE No. 4 sieve size) WITH FINES (Appreciable GRAINED GC Clayey gravels, gravel - sand - clay Packer No Recovery SOILS amount of fines) mixtures. (More than 50% of Well graded sands, gravelly sands, little or material is CLEAN SW Water Table at time of drilling Water Table after drilling LARGER than No. no fines. 200 sieve size) SANDS SANDS (More than 50% of (Little or no fines) SP Poorly graded sands or gravelly sands, coarse fraction is little or no fines. SMALLER than the No. 4 Sieve SANDS WITH SM Silty sands, sand - silt mixtures Size) FINES (Appreciable amount of fines) SC Clayey sands, sand - clay mixtures. Inorganic silts and very fine sands, rock Correlation of Penetration Resistance ML flour, silty of clayey fine sands or clayey silts and with slight plasticity. with Relative Density and Consistency SILTS AND CLAYS Inorganic lays of low to medium plasticity, SAND & GRAVEL SILT & CLAY CL gravelly clays, sandy clays, silty clays, FINE (Liquid limit LESS than 50) lean clays. No. of Blows DensityNo. of BlowsRelative Consistency 0 - 4 Very Loose 0 - 1 Very Soft GRAINED OL Organic silts and organic silty clays of low SOILS plasticity. 5 - 10 Loose 2 - 4 Soft (More than 50% of Inorganic silts, micaceous or 11 - 30 Medium Dense 5 - 8 Medium Stiff material is MH diatomaceous fine sandy or silty soils, SMALLER than elastic silts. 31 - 50 Dense 9 - 15 Stiff No. 200 sieve size) SILTS AND CLAYS Over 50 Very Dense 16 - 30 Very Stiff CH Inorganic clays of high plasticity, fat clays (Liquid limit GREATER than 50) Over 30 Hard Organic clays of medium to high OH plasticity, organic silts.

HIGHLY ORGANIC SOILS PT Peat and other highly organic soils. BOUNDARY CLASSIFICATIONS: Soils possessing characteristics of two groups are designated by combinations of group symbols.

SAND GRAVEL KEY TO SYMBOLS AND SILT OR CLAY Cobbles Boulders Fine Medium Coarse Fine Coarse DESCRIPTIONS No.200 No.40 No.10 No.4 3/4" 3" 12" U.S. STANDARD SIEVE SIZE

Reference: The Unified Soil Classification System, Corps of Engineers, U.S. Army Technical Memorandum No. 3-357, Vol. 1, March, 1953 (Revised April, 1960) Figure B-1 BORING E2-7

DATE DRILLED: March 27, 2013 EQUIPMENT USED: CME 75 (pcf) HOLE DIAMETER (in.): 8 inches (blows/ft) DEPTH (ft)DEPTH MOISTURE "N" VALUE ELEVATION: N/A ** OVA(ppm)*** (% of dry wt.) SAMPLE LOC. DRY DENSITY DRY ELEVATION (ft)ELEVATION STD.PEN.TEST BLOW COUNT* BLOW

4½ inches thick Asphalt Concrete

5 26 0.0 SM FILL [Af] SW- SILTY SAND - moist, grayish brown, fine to medium grained, SM some gravel (upto 1/2 inch in size), some brick and concrete fragments) 18 ALLUVIUM [Qal] WELL GRADED SAND with SILT - loose to medium dense, moist, light gray, fine to medium grained 10 8 No sample recovery

0.1 2.0 119 56 Becomes dense

15 34 0.0

1.6 124 47 Becomes medium dense

20 13 0.0 Becomes medium dense to very dense, some coarse grained, some gravel, trace cobbles (up to 3 to 4 inches in size)

2.6 97 47

25 40 0.0

More gravel and coarse grained 1.7 118 97

30 50/6" 0.0

3.1 115 69 Becomes dark gray to black Occasional Cobble (up to 6 to 8 inches in size)

35 81 0.1 More gravel

AT OTHER TIMES MAYAT OTHER TIMES DIFFER. INTERFACES STRATA ARE APPROXIMATE. BETWEEN TRANSITIONS STRATA MAY BE GRADUAL. BETWEEN 50 Occasional Cobble (up to 6 to 8 inches)

40 50/5" 0.1 SW WELL GRADED SAND with GRAVEL - dense, moist, gray, SHOWN ON LOGS ARE APPROXIMATE; TO PLOT PLANREFER FOR LOCATION MORE ACCURATE INFORMATION. SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND

THIS RECORD IS A REASONABLE INTERPRETATION OF SUBSURFACE CONDITIONS AT THE EXPLORATION LOCATION. LATITUDE AND LONGITUDE OF BORING LOCATION moist, fine to coarse grained, fine to coarse gravel, some cobbles (up to 3 to 8 inches in size), difficult drilling 50

45 34 0.1 Field Tech: AR Prepared By: LH (CONTINUED ON FOLLOWING FIGURE) Checked By: DC Metro Regional Connector Transit Corridor LOG OF BORING Los Angeles, California Project: 4953-11-0471 Figure: B-2.a B15SOIL_CRANDALL L:\70131 GEOTECH\GINTW\LIBRARY AMEC JUNE2012.GLB P:\4953 GEOTECH\2011-PROJ\110471 REGIONAL CONNECTOR\3.3 DATA (REVIEWED)\GINT LOGS\4953-11-0471 HSA DON'T USE G2-15.GPJ 5/15/13 BORING E2-7 (Continued)

Thin layer of light to medium brown Silt Becomes light brownish gray 7.0 118 53 FERNANDO FORMATION [Tf]: SANDY to CLAYEY SILTSTONE - moist, greenish gray, massive 50 24 0.0

27.0 96 38

55 23 0.1

27.0 96 61 Some shell fragments

60 25 0.1

28.6 94 49

65 27 0.1

27.9 96 37

70 38 0.1 Cemented layer (approximately 4 inches thick) 22.8 102 47

Cemented layer (approximately 2 to 3 inches thick) 75 37 END OF BORING AT 75 1/2 FEET

NOTES: Hand augered upper 5 feet to avoid damage to utilities. Borehole 80 grouted with cement-bentonite slurry and patched with quick set cement.

AT OTHER TIMES MAYAT OTHER TIMES DIFFER. INTERFACES STRATA ARE APPROXIMATE. BETWEEN TRANSITIONS STRATA MAY BE GRADUAL. BETWEEN Ground water encountered at 46.3 ft bgs. "N" Value Standard Penetration Test: Number of blows required to drive the SPT sampler 18 inches using a 140 pound automatic hammer falling 30 inches. 85 SHOWN ON LOGS ARE APPROXIMATE; TO PLOT PLANREFER FOR LOCATION MORE ACCURATE INFORMATION. SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND

THIS RECORD IS A REASONABLE INTERPRETATION OF SUBSURFACE CONDITIONS AT THE EXPLORATION LOCATION. LATITUDE AND LONGITUDE OF BORING LOCATION *Number of blows required to drive the Crandall Sampler 12 inches using a 140 pound hammer falling 30 inches. **Surface elevation based on CAD drawings provided by CPJV ***Photo Ionization Detector used for OVA readings 90 Field Tech: AR Prepared By: LH Checked By: DC Metro Regional Connector Transit Corridor LOG OF BORING Los Angeles, California Project: 4953-11-0471 Figure: B-2.b B15SOIL_CRANDALL L:\70131 GEOTECH\GINTW\LIBRARY AMEC JUNE2012.GLB P:\4953 GEOTECH\2011-PROJ\110471 REGIONAL CONNECTOR\3.3 DATA (REVIEWED)\GINT LOGS\4953-11-0471 HSA DON'T USE G2-15.GPJ 5/15/13 AMEC ENVIRONMENT & INFRASTRUCTURE 5628 E. SLAUSON AVE. LOS ANGELES, CALIFORNIA 90040 (323) 889-5300 fax (323) 889-5398

FIGURE B-3 - Crandall Sampler

JOB NO.: 4953-11-0471 REVISIONS: DATE: 12-11-09 SCALE: DRAWN BY: NH CHECKED BY: MKT

APPENDIX C GEOTECHNICAL LABORATORY TEST RESULTS

SHEAR STRENGTH in Pounds per Square Foot 0 1000 2000 3000 4000 5000 6000 0

1000

Boring Number and Sample Depth (ft.) E2-7@22' 2000

E2-7@22' 3000

E2-7@22' 4000

SURCHARGE PRESSURE5000 in Pounds per Square Foot

6000

KEY: Samples tested at field moisture content

Prepared/Date: JF 4/29/13 E2-7 Checked/Date: DC 5/15/13

DIRECT SHEAR TEST DATA Project No. 4953-11-0471 Figure C-1 U.S. SIEVE OPENING IN INCHES U.S. SIEVE NUMBERS HYDROMETER 6 3 1.5 3/4 3/8 4 10 20 40 60 100 200 100 0

90 10

80 20

70 30

60 40

50 50

40 60 PERCENT FINER BY WEIGHT FINER PERCENT PERCENT RETAINED BY WEIGHT BY RETAINED PERCENT

30 70

20 80

10 90

0 100 100 10 1 0.1 0.01 0.001 GRAIN SIZE IN MILLIMETERS GRAVEL SAND COBBLES SILT OR CLAY coarse fine coarse medium fine

SYMBOL BORING DEPTH (ft) CLASSIFICATION LL (%)* PL (%)* PI (%)* Cc Cu E2-7 12.5 WELL GRADED SAND with SILT (SW-SM) ------1.4 7.9 E2-7 25.0 WELL GRADED SAND with SILT (SW-SM) ------1.4 3.5 E2-7 45.0 SILT with GRAVEL (ML) ------E2-7 50.0 SILTSTONE ------1.8 13.1

SYMBOL BORING DEPTH (ft) D100 (mm) D60 (mm) D30 (mm) D10 (mm) % Gravel % Sand % Silt or % Clay E2-7 12.5 9.52 0.702 0.294 0.089 0.2 91.5 8.3 E2-7 25.0 4.75 0.291 0.181 0.084 0.0 91.5 8.5 E2-7 45.0 25.40 ------23.7 15.1 61.2 E2-7 50.0 1.98 0.019 0.007 0.001 0.0 2.1 97.9 Laboratory Test Method: ASTM D 422 *As determined by ASTM D 4318; see attached Atterberg Limits Test Results. Prepared/Date: JF 4/29/2013 Checked/Date: DC 5/15/2013

Metro PARTICLE SIZE DISTRIBUTION Regional Connector Transit Corridor Project No.: 4953-11-0471 Los Angeles, California Figure: C-2 MACTEC LA GRAIN SIZE L:\70131 GEOTECH\GINTW\LIBRARY AMEC JUNE2012.GLB P:\4953 GEOTECH\2011-PROJ\110471 REGIONAL CONNECTOR\3.3 DATA (REVIEWED)\GINT LOGS\4953-11-0471 HSA DON'T USE G2-15.GPJ 5/15/13 60 CL or OL CH or OH

20 PLASTICITY INDEX (%) INDEX PLASTICITY

CL-ML 0 ML or OL MH or OH 0 10 20 30 40 50 60 70 80 90 100 110 LIQUID LIMIT (%)

SYMBOL BORING DEPTH LL PL PI CLASSIFICATION (ft) (%) (%) (%) E2-7 65.0 142842 SILTSTONE

Laboratory Test Method: ASTM D 4318 "NP" indicates Non-Plastic Prepared/Date: JF 4/29/2013 Checked/Date: DC 5/15/2013

Metro ATTERBERG LIMITS TEST RESULTS Regional Connector Transit Corridor Project No.: 4953-11-0471 Los Angeles, California Figure: C-3 MACTEC LA _ATTERBERG_LIMITS L:\70131 GEOTECH\GINTW\LIBRARY AMEC JUNE2012.GLB P:\4953 GEOTECH\2011-PROJ\110471 REGIONAL CONNECTOR\3.3 DATA (REVIEWED)\GINT LOGS\4953-11-0471 HSA DON'T USE G2-15.GPJ 5/15/13

APPENDIX D ANALYTICAL LABORATORY REPORT AND CHAIN OF CUSTODY DOCUMENTATION FOR SOIL AND GROUNDWATER TESTING

April 08, 2013

Jay Neuhaus ELAP No.: 1838 NELAP No.: 02107CA AMEC CSDLAC No.: 10196 6001 Rickenbacker Road ORELAP No.: CA300003 Los Angeles, CA 90040-3031 TCEQ No.: T104704502 Tel: (323) 889-5300 Fax:(323) 721-6700

Re: ATL Work Order Number : 1300952 Client Reference : Regional Connector, 4953-11-0471

Enclosed are the results for sample(s) received on March 28, 2013 by Advanced Technology Laboratories. The sample(s) are tested for the parameters as indicated on the enclosed chain of custody in accordance with applicable laboratory certifications. The laboratory results contained in this report specifically pertains to the sample(s) submitted.

Thank you for the opportunity to serve the needs of your company. If you have any questions, please feel free to contact me or your Project Manager.

Sincerely,

Eddie Rodriguez Laboratory Director

The cover letter and the case narrative are an integral part of this analytical report and its absence renders the report invalid. Test results contained within this data package meet the requirements of the National Environmental Laboratory Accreditation Conference and/or applicable state-specific certification programs. The report cannot be reproduced without written permission from the client and Advanced Technology Laboratories.

3275 Walnut Avenue, Signal Hill, CA 90755 Tel: 562-989-4045 Fax: 562-989-4040 www.atlglobal.com

Page 1 of 61 Certificate of Analysis

AMEC Project Number : Regional Connector, 4953-11-0471 6001 Rickenbacker Road Report To : Jay Neuhaus Los Angeles , CA 90040-3031 Reported : 04/08/2013

SUMMARY OF SAMPLES

Sample ID Laboratory ID Matrix Date Sampled Date Received

E2-7-5' 1300952-01 Soil 3/27/13 18:35 3/28/13 14:44 E2-7-10' 1300952-02 Soil 3/27/13 18:45 3/28/13 14:44 E2-7-20' 1300952-04 Soil 3/27/13 19:05 3/28/13 14:44 E2-7-30' 1300952-06 Soil 3/27/13 19:30 3/28/13 14:44 E2-7-45' 1300952-09 Soil 3/27/13 20:15 3/28/13 14:44 E2-7-55' 1300952-11 Soil 3/27/13 21:35 3/28/13 14:44 E2-7-GW 1300952-16 Groundwater 3/27/13 23:00 3/28/13 14:44

CASE NARRATIVE

Sample Receiving/General Comments

Headspace >5-6mm was noted in all voa vials of E2-7-GW.

Sample volume of E2-7-GW received for EPA 8015 (DRO/ORO) was about 500 ml.

3275 Walnut Avenue, Signal Hill, CA 90755 Tel: 562-989-4045 Fax: 562-989-4040 www.atlglobal.com Page 2 of 61 Certificate of Analysis

AMEC Project Number : Regional Connector, 4953-11-0471 6001 Rickenbacker Road Report To : Jay Neuhaus Los Angeles , CA 90040-3031 Reported : 04/08/2013

Client Sample ID E2-7-10' Lab ID: 1300952-02

Title 22 Metals by ICP-AES EPA 6010B Analyst: PT

Result PQL MDL Date/Time Analyte (mg/kg) (mg/kg) (mg/kg) Dilution Batch Prepared Analyzed Notes

Antimony ND 2.0 NA 1 B3C0494 03/29/2013 04/01/13 09:02 Arsenic 1.2 0.99 NA 1 B3C0494 03/29/2013 04/01/13 09:02 Barium 100 0.99 NA 1 B3C0494 03/29/2013 04/01/13 09:02 Beryllium ND 0.99 NA 1 B3C0494 03/29/2013 04/01/13 09:02 Cadmium ND 0.99 NA 1 B3C0494 03/29/2013 04/01/13 09:02 Chromium 11 0.99 NA 1 B3C0494 03/29/2013 04/01/13 09:02 Cobalt 5.2 0.99 NA 1 B3C0494 03/29/2013 04/01/13 09:02 Copper 16 2.0 NA 1 B3C0494 03/29/2013 04/01/13 09:02 Lead 39 0.99 NA 1 B3C0494 03/29/2013 04/01/13 09:02 Molybdenum ND 0.99 NA 1 B3C0494 03/29/2013 04/01/13 09:02 Nickel 6.1 0.99 NA 1 B3C0494 03/29/2013 04/01/13 09:02 Selenium ND 0.99 NA 1 B3C0494 03/29/2013 04/01/13 09:02 Silver ND 0.99 NA 1 B3C0494 03/29/2013 04/01/13 09:02 Thallium ND 0.99 NA 1 B3C0494 03/29/2013 04/01/13 09:02 Vanadium 18 0.99 NA 1 B3C0494 03/29/2013 04/01/13 09:02 Zinc 80 0.99 NA 1 B3C0494 03/29/2013 04/01/13 09:02

Mercury by AA (Cold Vapor) EPA 7471 Analyst: VV

Result PQL MDL Date/Time Analyte (mg/kg) (mg/kg) (mg/kg) Dilution Batch Prepared Analyzed Notes

Mercury 0.31 0.10 NA 1 B3D0058 04/03/2013 04/03/13 15:56

Gasoline Range Organics by EPA 8015B (5035) Analyst: VN

Result PQL MDL Date/Time Analyte (mg/kg) (mg/kg) (mg/kg) Dilution Batch Prepared Analyzed Notes

Gasoline Range Organics ND 1.1 NA 1 B3D0004 04/01/2013 04/01/13 14:11 Surrogate: 4-Bromofluorobenzene 71.7 % 59 - 160 B3D0004 04/01/2013 04/01/13 14:11

Diesel Range Organics by EPA 8015B Analyst: CR

Result PQL MDL Date/Time Analyte (mg/kg) (mg/kg) (mg/kg) Dilution Batch Prepared Analyzed Notes

DRO 47 10 NA 1 B3C0492 03/29/2013 03/29/13 12:30 ORO 86 10 NA 1 B3C0492 03/29/2013 03/29/13 12:30 Surrogate: p-Terphenyl 96.0 % 62 - 136 B3C0492 03/29/2013 03/29/13 12:30

3275 Walnut Avenue, Signal Hill, CA 90755 Tel: 562-989-4045 Fax: 562-989-4040 www.atlglobal.com Page 3 of 61 Certificate of Analysis

AMEC Project Number : Regional Connector, 4953-11-0471 6001 Rickenbacker Road Report To : Jay Neuhaus Los Angeles , CA 90040-3031 Reported : 04/08/2013

Client Sample ID E2-7-10' Lab ID: 1300952-02

Volatile Organic Compounds by EPA 5035/EPA 8260 Analyst: TP

Result PQL MDL Date/Time Analyte (ug/kg) (ug/kg) (ug/kg) Dilution Batch Prepared Analyzed Notes

1,1,1,2-Tetrachloroethane ND 8.6 NA 1 B3C0501 03/27/2013 03/29/13 15:21 1,1,1-Trichloroethane ND 8.6 NA 1 B3C0501 03/27/2013 03/29/13 15:21 1,1,2,2-Tetrachloroethane ND 8.6 NA 1 B3C0501 03/27/2013 03/29/13 15:21 1,1,2-Trichloroethane ND 8.6 NA 1 B3C0501 03/27/2013 03/29/13 15:21 1,1-Dichloroethane ND 8.6 NA 1 B3C0501 03/27/2013 03/29/13 15:21 1,1-Dichloroethene ND 8.6 NA 1 B3C0501 03/27/2013 03/29/13 15:21 1,1-Dichloropropene ND 8.6 NA 1 B3C0501 03/27/2013 03/29/13 15:21 1,2,3-Trichloropropane ND 8.6 NA 1 B3C0501 03/27/2013 03/29/13 15:21 1,2,3-Trichlorobenzene ND 8.6 NA 1 B3C0501 03/27/2013 03/29/13 15:21 1,2,4-Trichlorobenzene ND 8.6 NA 1 B3C0501 03/27/2013 03/29/13 15:21 1,2,4-Trimethylbenzene ND 8.6 NA 1 B3C0501 03/27/2013 03/29/13 15:21 1,2-Dibromo-3-chloropropane ND 17 NA 1 B3C0501 03/27/2013 03/29/13 15:21 1,2-Dibromoethane ND 8.6 NA 1 B3C0501 03/27/2013 03/29/13 15:21 1,2-Dichlorobenzene ND 8.6 NA 1 B3C0501 03/27/2013 03/29/13 15:21 1,2-Dichloroethane ND 8.6 NA 1 B3C0501 03/27/2013 03/29/13 15:21 1,2-Dichloropropane ND 8.6 NA 1 B3C0501 03/27/2013 03/29/13 15:21 1,3,5-Trimethylbenzene ND 8.6 NA 1 B3C0501 03/27/2013 03/29/13 15:21 1,3-Dichlorobenzene ND 8.6 NA 1 B3C0501 03/27/2013 03/29/13 15:21 1,3-Dichloropropane ND 8.6 NA 1 B3C0501 03/27/2013 03/29/13 15:21 1,4-Dichlorobenzene ND 8.6 NA 1 B3C0501 03/27/2013 03/29/13 15:21 2,2-Dichloropropane ND 8.6 NA 1 B3C0501 03/27/2013 03/29/13 15:21 2-Chlorotoluene ND 8.6 NA 1 B3C0501 03/27/2013 03/29/13 15:21 4-Chlorotoluene ND 8.6 NA 1 B3C0501 03/27/2013 03/29/13 15:21 4-Isopropyltoluene ND 8.6 NA 1 B3C0501 03/27/2013 03/29/13 15:21 Benzene ND 8.6 NA 1 B3C0501 03/27/2013 03/29/13 15:21 Bromobenzene ND 8.6 NA 1 B3C0501 03/27/2013 03/29/13 15:21 Bromochloromethane ND 8.6 NA 1 B3C0501 03/27/2013 03/29/13 15:21 Bromodichloromethane ND 8.6 NA 1 B3C0501 03/27/2013 03/29/13 15:21 Bromoform ND 8.6 NA 1 B3C0501 03/27/2013 03/29/13 15:21 Bromomethane ND 8.6 NA 1 B3C0501 03/27/2013 03/29/13 15:21 Carbon disulfide ND 8.6 NA 1 B3C0501 03/27/2013 03/29/13 15:21 Carbon tetrachloride ND 8.6 NA 1 B3C0501 03/27/2013 03/29/13 15:21 Chlorobenzene ND 8.6 NA 1 B3C0501 03/27/2013 03/29/13 15:21 Chloroethane ND 8.6 NA 1 B3C0501 03/27/2013 03/29/13 15:21 Chloroform ND 8.6 NA 1 B3C0501 03/27/2013 03/29/13 15:21 Chloromethane ND 8.6 NA 1 B3C0501 03/27/2013 03/29/13 15:21 cis-1,2-Dichloroethene ND 8.6 NA 1 B3C0501 03/27/2013 03/29/13 15:21

3275 Walnut Avenue, Signal Hill, CA 90755 Tel: 562-989-4045 Fax: 562-989-4040 www.atlglobal.com Page 4 of 61 Certificate of Analysis

AMEC Project Number : Regional Connector, 4953-11-0471 6001 Rickenbacker Road Report To : Jay Neuhaus Los Angeles , CA 90040-3031 Reported : 04/08/2013

Client Sample ID E2-7-10' Lab ID: 1300952-02

Volatile Organic Compounds by EPA 5035/EPA 8260 Analyst: TP

Result PQL MDL Date/Time Analyte (ug/kg) (ug/kg) (ug/kg) Dilution Batch Prepared Analyzed Notes

cis-1,3-Dichloropropene ND 8.6 NA 1 B3C0501 03/27/2013 03/29/13 15:21 Di-isopropyl ether ND 8.6 NA 1 B3C0501 03/27/2013 03/29/13 15:21 Dibromochloromethane ND 8.6 NA 1 B3C0501 03/27/2013 03/29/13 15:21 Dibromomethane ND 8.6 NA 1 B3C0501 03/27/2013 03/29/13 15:21 Dichlorodifluoromethane ND 8.6 NA 1 B3C0501 03/27/2013 03/29/13 15:21 Ethyl Acetate ND 86 NA 1 B3C0501 03/27/2013 03/29/13 15:21 Ethyl Ether ND 86 NA 1 B3C0501 03/27/2013 03/29/13 15:21 Ethyl tert-butyl ether ND 8.6 NA 1 B3C0501 03/27/2013 03/29/13 15:21 Ethylbenzene ND 8.6 NA 1 B3C0501 03/27/2013 03/29/13 15:21 Freon-113 ND 8.6 NA 1 B3C0501 03/27/2013 03/29/13 15:21 Hexachlorobutadiene ND 8.6 NA 1 B3C0501 03/27/2013 03/29/13 15:21 Isopropylbenzene ND 8.6 NA 1 B3C0501 03/27/2013 03/29/13 15:21 m,p-Xylene ND 17 NA 1 B3C0501 03/27/2013 03/29/13 15:21 Methylene chloride ND 8.6 NA 1 B3C0501 03/27/2013 03/29/13 15:21 MTBE ND 8.6 NA 1 B3C0501 03/27/2013 03/29/13 15:21 n-Butylbenzene ND 8.6 NA 1 B3C0501 03/27/2013 03/29/13 15:21 n-Propylbenzene ND 8.6 NA 1 B3C0501 03/27/2013 03/29/13 15:21 Naphthalene ND 8.6 NA 1 B3C0501 03/27/2013 03/29/13 15:21 o-Xylene ND 8.6 NA 1 B3C0501 03/27/2013 03/29/13 15:21 sec-Butylbenzene ND 8.6 NA 1 B3C0501 03/27/2013 03/29/13 15:21 Styrene ND 8.6 NA 1 B3C0501 03/27/2013 03/29/13 15:21 tert-Amyl methyl ether ND 8.6 NA 1 B3C0501 03/27/2013 03/29/13 15:21 tert-Butanol ND 170 NA 1 B3C0501 03/27/2013 03/29/13 15:21 tert-Butylbenzene ND 8.6 NA 1 B3C0501 03/27/2013 03/29/13 15:21 Tetrachloroethene ND 8.6 NA 1 B3C0501 03/27/2013 03/29/13 15:21 Toluene ND 8.6 NA 1 B3C0501 03/27/2013 03/29/13 15:21 trans-1,2-Dichloroethene ND 8.6 NA 1 B3C0501 03/27/2013 03/29/13 15:21 trans-1,3-Dichloropropene ND 86 NA 1 B3C0501 03/27/2013 03/29/13 15:21 Trichloroethene ND 8.6 NA 1 B3C0501 03/27/2013 03/29/13 15:21 Trichlorofluoromethane ND 8.6 NA 1 B3C0501 03/27/2013 03/29/13 15:21 Vinyl acetate ND 86 NA 1 B3C0501 03/27/2013 03/29/13 15:21 Vinyl chloride ND 8.6 NA 1 B3C0501 03/27/2013 03/29/13 15:21 Surrogate: 1,2-Dichloroethane-d4 108 % 56 - 159 B3C0501 03/27/2013 03/29/13 15:21 Surrogate: 4-Bromofluorobenzene 104 % 69 - 131 B3C0501 03/27/2013 03/29/13 15:21 Surrogate: Dibromofluoromethane 114 % 60 - 127 B3C0501 03/27/2013 03/29/13 15:21 Surrogate: Toluene-d8 108 % 70 - 121 B3C0501 03/27/2013 03/29/13 15:21

3275 Walnut Avenue, Signal Hill, CA 90755 Tel: 562-989-4045 Fax: 562-989-4040 www.atlglobal.com Page 5 of 61 Certificate of Analysis

AMEC Project Number : Regional Connector, 4953-11-0471 6001 Rickenbacker Road Report To : Jay Neuhaus Los Angeles , CA 90040-3031 Reported : 04/08/2013

Client Sample ID E2-7-10' Lab ID: 1300952-02

Semivolatile Organic Compounds by EPA 8270C Analyst: BB

Result PQL MDL Date/Time Analyte (ug/kg) (ug/kg) (ug/kg) Dilution Batch Prepared Analyzed Notes

1,2,4-Trichlorobenzene ND 3300 NA 10 B3C0503 03/29/2013 03/29/13 19:31 D1 1,2-Dichlorobenzene ND 3300 NA 10 B3C0503 03/29/2013 03/29/13 19:31 D1 1,3-Dichlorobenzene ND 3300 NA 10 B3C0503 03/29/2013 03/29/13 19:31 D1 1,4-Dichlorobenzene ND 3300 NA 10 B3C0503 03/29/2013 03/29/13 19:31 D1 2,4,5-Trichlorophenol ND 3300 NA 10 B3C0503 03/29/2013 03/29/13 19:31 D1 2,4,6-Trichlorophenol ND 3300 NA 10 B3C0503 03/29/2013 03/29/13 19:31 D1 2,4-Dichlorophenol ND 16000 NA 10 B3C0503 03/29/2013 03/29/13 19:31 D1 2,4-Dimethylphenol ND 3300 NA 10 B3C0503 03/29/2013 03/29/13 19:31 D1 2,4-Dinitrophenol ND 16000 NA 10 B3C0503 03/29/2013 03/29/13 19:31 D1 2,4-Dinitrotoluene ND 3300 NA 10 B3C0503 03/29/2013 03/29/13 19:31 D1 2,6-Dinitrotoluene ND 3300 NA 10 B3C0503 03/29/2013 03/29/13 19:31 D1 2-Chloronaphthalene ND 3300 NA 10 B3C0503 03/29/2013 03/29/13 19:31 D1 2-Chlorophenol ND 3300 NA 10 B3C0503 03/29/2013 03/29/13 19:31 D1 2-Methylnaphthalene ND 3300 NA 10 B3C0503 03/29/2013 03/29/13 19:31 D1 2-Methylphenol ND 3300 NA 10 B3C0503 03/29/2013 03/29/13 19:31 D1 2-Nitroaniline ND 16000 NA 10 B3C0503 03/29/2013 03/29/13 19:31 D1 2-Nitrophenol ND 3300 NA 10 B3C0503 03/29/2013 03/29/13 19:31 D1 3,3´-Dichlorobenzidine ND 6600 NA 10 B3C0503 03/29/2013 03/29/13 19:31 D1 3-Nitroaniline ND 16000 NA 10 B3C0503 03/29/2013 03/29/13 19:31 D1 4,6-Dinitro-2-methyphenol ND 16000 NA 10 B3C0503 03/29/2013 03/29/13 19:31 D1 4-Bromophenyl-phenylether ND 3300 NA 10 B3C0503 03/29/2013 03/29/13 19:31 D1 4-Chloro-3-methylphenol ND 6600 NA 10 B3C0503 03/29/2013 03/29/13 19:31 D1 4-Chloroaniline ND 6600 NA 10 B3C0503 03/29/2013 03/29/13 19:31 D1 4-Chlorophenyl-phenylether ND 3300 NA 10 B3C0503 03/29/2013 03/29/13 19:31 D1 4-Methylphenol ND 3300 NA 10 B3C0503 03/29/2013 03/29/13 19:31 D1 4-Nitroaniline ND 16000 NA 10 B3C0503 03/29/2013 03/29/13 19:31 D1 4-Nitrophenol ND 3300 NA 10 B3C0503 03/29/2013 03/29/13 19:31 D1 Acenaphthene ND 3300 NA 10 B3C0503 03/29/2013 03/29/13 19:31 D1 Acenaphthylene ND 3300 NA 10 B3C0503 03/29/2013 03/29/13 19:31 D1 Anthracene ND 3300 NA 10 B3C0503 03/29/2013 03/29/13 19:31 D1 Benzidine (M) ND 16000 NA 10 B3C0503 03/29/2013 03/29/13 19:31 D1 Benzo(a)anthracene ND 3300 NA 10 B3C0503 03/29/2013 03/29/13 19:31 D1 Benzo(a)pyrene ND 3300 NA 10 B3C0503 03/29/2013 03/29/13 19:31 D1 Benzo(b)fluoranthene ND 3300 NA 10 B3C0503 03/29/2013 03/29/13 19:31 D1 Benzo(g,h,i)perylene ND 3300 NA 10 B3C0503 03/29/2013 03/29/13 19:31 D1 Benzo(k)fluoranthene ND 3300 NA 10 B3C0503 03/29/2013 03/29/13 19:31 D1 Benzoic acid ND 16000 NA 10 B3C0503 03/29/2013 03/29/13 19:31 D1

3275 Walnut Avenue, Signal Hill, CA 90755 Tel: 562-989-4045 Fax: 562-989-4040 www.atlglobal.com Page 6 of 61 Certificate of Analysis

AMEC Project Number : Regional Connector, 4953-11-0471 6001 Rickenbacker Road Report To : Jay Neuhaus Los Angeles , CA 90040-3031 Reported : 04/08/2013

Client Sample ID E2-7-10' Lab ID: 1300952-02

Semivolatile Organic Compounds by EPA 8270C Analyst: BB

Result PQL MDL Date/Time Analyte (ug/kg) (ug/kg) (ug/kg) Dilution Batch Prepared Analyzed Notes

Benzyl alcohol ND 6600 NA 10 B3C0503 03/29/2013 03/29/13 19:31 D1 bis(2-chloroethoxy)methane ND 3300 NA 10 B3C0503 03/29/2013 03/29/13 19:31 D1 bis(2-Chloroethyl)ether ND 3300 NA 10 B3C0503 03/29/2013 03/29/13 19:31 D1 bis(2-chloroisopropyl)ether ND 3300 NA 10 B3C0503 03/29/2013 03/29/13 19:31 D1 bis(2-ethylhexyl)phthalate ND 3300 NA 10 B3C0503 03/29/2013 03/29/13 19:31 D1 Butylbenzylphthalate ND 3300 NA 10 B3C0503 03/29/2013 03/29/13 19:31 D1 Chrysene ND 3300 NA 10 B3C0503 03/29/2013 03/29/13 19:31 D1 Di-n-butylphthalate ND 3300 NA 10 B3C0503 03/29/2013 03/29/13 19:31 D1 Di-n-octylphthalate ND 3300 NA 10 B3C0503 03/29/2013 03/29/13 19:31 D1 Dibenz(a,h)anthracene ND 3300 NA 10 B3C0503 03/29/2013 03/29/13 19:31 D1 Dibenzofuran ND 3300 NA 10 B3C0503 03/29/2013 03/29/13 19:31 D1 Diethyl phthalate ND 3300 NA 10 B3C0503 03/29/2013 03/29/13 19:31 D1 Dimethyl phthalate ND 3300 NA 10 B3C0503 03/29/2013 03/29/13 19:31 D1 Fluoranthene ND 3300 NA 10 B3C0503 03/29/2013 03/29/13 19:31 D1 Fluorene ND 3300 NA 10 B3C0503 03/29/2013 03/29/13 19:31 D1 Hexachlorobenzene ND 3300 NA 10 B3C0503 03/29/2013 03/29/13 19:31 D1 Hexachlorobutadiene ND 6600 NA 10 B3C0503 03/29/2013 03/29/13 19:31 D1 Hexachlorocyclopentadiene ND 6600 NA 10 B3C0503 03/29/2013 03/29/13 19:31 D1 Hexachloroethane ND 3300 NA 10 B3C0503 03/29/2013 03/29/13 19:31 D1 Indeno(1,2,3-cd)pyrene ND 3300 NA 10 B3C0503 03/29/2013 03/29/13 19:31 D1 Isophorone ND 3300 NA 10 B3C0503 03/29/2013 03/29/13 19:31 D1 N-Nitroso-di-n propylamine ND 3300 NA 10 B3C0503 03/29/2013 03/29/13 19:31 D1 N-Nitrosodiphenylamine ND 3300 NA 10 B3C0503 03/29/2013 03/29/13 19:31 D1 Naphthalene ND 3300 NA 10 B3C0503 03/29/2013 03/29/13 19:31 D1 Nitrobenzene ND 3300 NA 10 B3C0503 03/29/2013 03/29/13 19:31 D1 Pentachlorophenol ND 16000 NA 10 B3C0503 03/29/2013 03/29/13 19:31 D1 Phenanthrene ND 3300 NA 10 B3C0503 03/29/2013 03/29/13 19:31 D1 Phenol ND 3300 NA 10 B3C0503 03/29/2013 03/29/13 19:31 D1 Pyrene ND 3300 NA 10 B3C0503 03/29/2013 03/29/13 19:31 D1 Pyridine ND 16000 NA 10 B3C0503 03/29/2013 03/29/13 19:31 D1 Surrogate: 1,2-Dichlorobenzene-d4 66.3 % 48 - 113 B3C0503 03/29/2013 03/29/13 19:31 D1 Surrogate: 2,4,6-Tribromophenol 36.8 % 14 - 162 B3C0503 03/29/2013 03/29/13 19:31 D1 Surrogate: 2-Chlorophenol-d4 72.2 % 40 - 117 B3C0503 03/29/2013 03/29/13 19:31 D1 Surrogate: 2-Fluorobiphenyl 68.9 % 52 - 126 B3C0503 03/29/2013 03/29/13 19:31 D1 Surrogate: 2-Fluorophenol 71.2 % 26 - 124 B3C0503 03/29/2013 03/29/13 19:31 D1 Surrogate: 4-Terphenyl-d14 73.7 % 36 - 163 B3C0503 03/29/2013 03/29/13 19:31 D1 Surrogate: Nitrobenzene-d5 86.4 % 42 - 118 B3C0503 03/29/2013 03/29/13 19:31 D1

3275 Walnut Avenue, Signal Hill, CA 90755 Tel: 562-989-4045 Fax: 562-989-4040 www.atlglobal.com Page 7 of 61 Certificate of Analysis

AMEC Project Number : Regional Connector, 4953-11-0471 6001 Rickenbacker Road Report To : Jay Neuhaus Los Angeles , CA 90040-3031 Reported : 04/08/2013

Client Sample ID E2-7-10' Lab ID: 1300952-02

Semivolatile Organic Compounds by EPA 8270C Analyst: BB

Result PQL MDL Date/Time Analyte (ug/kg) (ug/kg) (ug/kg) Dilution Batch Prepared Analyzed Notes

Surrogate: Phenol-d5 75.0 % 29 - 124 B3C0503 03/29/2013 03/29/13 19:31 D1

3275 Walnut Avenue, Signal Hill, CA 90755 Tel: 562-989-4045 Fax: 562-989-4040 www.atlglobal.com Page 8 of 61 Certificate of Analysis

AMEC Project Number : Regional Connector, 4953-11-0471 6001 Rickenbacker Road Report To : Jay Neuhaus Los Angeles , CA 90040-3031 Reported : 04/08/2013

Client Sample ID E2-7-20' Lab ID: 1300952-04

Title 22 Metals by ICP-AES EPA 6010B Analyst: PT

Result PQL MDL Date/Time Analyte (mg/kg) (mg/kg) (mg/kg) Dilution Batch Prepared Analyzed Notes

Antimony ND 2.0 NA 1 B3C0494 03/29/2013 04/01/13 09:09 Arsenic ND 1.0 NA 1 B3C0494 03/29/2013 04/01/13 09:09 Barium 100 1.0 NA 1 B3C0494 03/29/2013 04/01/13 09:09 Beryllium ND 1.0 NA 1 B3C0494 03/29/2013 04/01/13 09:09 Cadmium ND 1.0 NA 1 B3C0494 03/29/2013 04/01/13 09:09 Chromium 5.7 1.0 NA 1 B3C0494 03/29/2013 04/01/13 09:09 Cobalt 4.2 1.0 NA 1 B3C0494 03/29/2013 04/01/13 09:09 Copper 14 2.0 NA 1 B3C0494 03/29/2013 04/01/13 09:09 Lead 1.4 1.0 NA 1 B3C0494 03/29/2013 04/01/13 09:09 Molybdenum ND 1.0 NA 1 B3C0494 03/29/2013 04/01/13 09:09 Nickel 4.1 1.0 NA 1 B3C0494 03/29/2013 04/01/13 09:09 Selenium ND 1.0 NA 1 B3C0494 03/29/2013 04/01/13 09:09 Silver ND 1.0 NA 1 B3C0494 03/29/2013 04/01/13 09:09 Thallium ND 1.0 NA 1 B3C0494 03/29/2013 04/01/13 09:09 Vanadium 15 1.0 NA 1 B3C0494 03/29/2013 04/01/13 09:09 Zinc 31 1.0 NA 1 B3C0494 03/29/2013 04/01/13 09:09

Mercury by AA (Cold Vapor) EPA 7471 Analyst: VV

Result PQL MDL Date/Time Analyte (mg/kg) (mg/kg) (mg/kg) Dilution Batch Prepared Analyzed Notes

Mercury ND 0.10 NA 1 B3D0058 04/03/2013 04/03/13 16:06

Gasoline Range Organics by EPA 8015B (5035) Analyst: VN

Result PQL MDL Date/Time Analyte (mg/kg) (mg/kg) (mg/kg) Dilution Batch Prepared Analyzed Notes

Gasoline Range Organics ND 0.95 NA 1 B3C0499 03/29/2013 03/29/13 14:50 Surrogate: 4-Bromofluorobenzene 85.3 % 59 - 160 B3C0499 03/29/2013 03/29/13 14:50

Diesel Range Organics by EPA 8015B Analyst: CR

Result PQL MDL Date/Time Analyte (mg/kg) (mg/kg) (mg/kg) Dilution Batch Prepared Analyzed Notes

DRO ND 10 NA 1 B3C0492 03/29/2013 03/29/13 11:23 ORO ND 10 NA 1 B3C0492 03/29/2013 03/29/13 11:23 Surrogate: p-Terphenyl 92.0 % 62 - 136 B3C0492 03/29/2013 03/29/13 11:23

3275 Walnut Avenue, Signal Hill, CA 90755 Tel: 562-989-4045 Fax: 562-989-4040 www.atlglobal.com Page 9 of 61 Certificate of Analysis

AMEC Project Number : Regional Connector, 4953-11-0471 6001 Rickenbacker Road Report To : Jay Neuhaus Los Angeles , CA 90040-3031 Reported : 04/08/2013

Client Sample ID E2-7-20' Lab ID: 1300952-04

Volatile Organic Compounds by EPA 5035/EPA 8260 Analyst: TP

Result PQL MDL Date/Time Analyte (ug/kg) (ug/kg) (ug/kg) Dilution Batch Prepared Analyzed Notes

1,1,1,2-Tetrachloroethane ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 15:41 1,1,1-Trichloroethane ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 15:41 1,1,2,2-Tetrachloroethane ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 15:41 1,1,2-Trichloroethane ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 15:41 1,1-Dichloroethane ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 15:41 1,1-Dichloroethene ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 15:41 1,1-Dichloropropene ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 15:41 1,2,3-Trichloropropane ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 15:41 1,2,3-Trichlorobenzene ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 15:41 1,2,4-Trichlorobenzene ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 15:41 1,2,4-Trimethylbenzene ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 15:41 1,2-Dibromo-3-chloropropane ND 9.5 NA 1 B3C0501 03/27/2013 03/29/13 15:41 1,2-Dibromoethane ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 15:41 1,2-Dichlorobenzene ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 15:41 1,2-Dichloroethane ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 15:41 1,2-Dichloropropane ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 15:41 1,3,5-Trimethylbenzene ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 15:41 1,3-Dichlorobenzene ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 15:41 1,3-Dichloropropane ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 15:41 1,4-Dichlorobenzene ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 15:41 2,2-Dichloropropane ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 15:41 2-Chlorotoluene ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 15:41 4-Chlorotoluene ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 15:41 4-Isopropyltoluene ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 15:41 Benzene ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 15:41 Bromobenzene ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 15:41 Bromochloromethane ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 15:41 Bromodichloromethane ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 15:41 Bromoform ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 15:41 Bromomethane ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 15:41 Carbon disulfide ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 15:41 Carbon tetrachloride ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 15:41 Chlorobenzene ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 15:41 Chloroethane ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 15:41 Chloroform ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 15:41 Chloromethane ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 15:41 cis-1,2-Dichloroethene ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 15:41

3275 Walnut Avenue, Signal Hill, CA 90755 Tel: 562-989-4045 Fax: 562-989-4040 www.atlglobal.com Page 10 of 61 Certificate of Analysis

AMEC Project Number : Regional Connector, 4953-11-0471 6001 Rickenbacker Road Report To : Jay Neuhaus Los Angeles , CA 90040-3031 Reported : 04/08/2013

Client Sample ID E2-7-20' Lab ID: 1300952-04

Volatile Organic Compounds by EPA 5035/EPA 8260 Analyst: TP

Result PQL MDL Date/Time Analyte (ug/kg) (ug/kg) (ug/kg) Dilution Batch Prepared Analyzed Notes

cis-1,3-Dichloropropene ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 15:41 Di-isopropyl ether ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 15:41 Dibromochloromethane ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 15:41 Dibromomethane ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 15:41 Dichlorodifluoromethane ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 15:41 Ethyl Acetate ND 47 NA 1 B3C0501 03/27/2013 03/29/13 15:41 Ethyl Ether ND 47 NA 1 B3C0501 03/27/2013 03/29/13 15:41 Ethyl tert-butyl ether ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 15:41 Ethylbenzene ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 15:41 Freon-113 ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 15:41 Hexachlorobutadiene ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 15:41 Isopropylbenzene ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 15:41 m,p-Xylene ND 9.5 NA 1 B3C0501 03/27/2013 03/29/13 15:41 Methylene chloride ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 15:41 MTBE ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 15:41 n-Butylbenzene ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 15:41 n-Propylbenzene ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 15:41 Naphthalene ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 15:41 o-Xylene ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 15:41 sec-Butylbenzene ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 15:41 Styrene ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 15:41 tert-Amyl methyl ether ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 15:41 tert-Butanol ND 95 NA 1 B3C0501 03/27/2013 03/29/13 15:41 tert-Butylbenzene ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 15:41 Tetrachloroethene ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 15:41 Toluene ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 15:41 trans-1,2-Dichloroethene ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 15:41 trans-1,3-Dichloropropene ND 47 NA 1 B3C0501 03/27/2013 03/29/13 15:41 Trichloroethene ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 15:41 Trichlorofluoromethane ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 15:41 Vinyl acetate ND 47 NA 1 B3C0501 03/27/2013 03/29/13 15:41 Vinyl chloride ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 15:41 Surrogate: 1,2-Dichloroethane-d4 111 % 56 - 159 B3C0501 03/27/2013 03/29/13 15:41 Surrogate: 4-Bromofluorobenzene 106 % 69 - 131 B3C0501 03/27/2013 03/29/13 15:41 Surrogate: Dibromofluoromethane 112 % 60 - 127 B3C0501 03/27/2013 03/29/13 15:41 Surrogate: Toluene-d8 105 % 70 - 121 B3C0501 03/27/2013 03/29/13 15:41

3275 Walnut Avenue, Signal Hill, CA 90755 Tel: 562-989-4045 Fax: 562-989-4040 www.atlglobal.com Page 11 of 61 Certificate of Analysis

AMEC Project Number : Regional Connector, 4953-11-0471 6001 Rickenbacker Road Report To : Jay Neuhaus Los Angeles , CA 90040-3031 Reported : 04/08/2013

Client Sample ID E2-7-20' Lab ID: 1300952-04

Semivolatile Organic Compounds by EPA 8270C Analyst: BB

Result PQL MDL Date/Time Analyte (ug/kg) (ug/kg) (ug/kg) Dilution Batch Prepared Analyzed Notes

1,2,4-Trichlorobenzene ND 330 NA 1 B3C0503 03/29/2013 03/29/13 17:47 1,2-Dichlorobenzene ND 330 NA 1 B3C0503 03/29/2013 03/29/13 17:47 1,3-Dichlorobenzene ND 330 NA 1 B3C0503 03/29/2013 03/29/13 17:47 1,4-Dichlorobenzene ND 330 NA 1 B3C0503 03/29/2013 03/29/13 17:47 2,4,5-Trichlorophenol ND 330 NA 1 B3C0503 03/29/2013 03/29/13 17:47 2,4,6-Trichlorophenol ND 330 NA 1 B3C0503 03/29/2013 03/29/13 17:47 2,4-Dichlorophenol ND 1600 NA 1 B3C0503 03/29/2013 03/29/13 17:47 2,4-Dimethylphenol ND 330 NA 1 B3C0503 03/29/2013 03/29/13 17:47 2,4-Dinitrophenol ND 1600 NA 1 B3C0503 03/29/2013 03/29/13 17:47 2,4-Dinitrotoluene ND 330 NA 1 B3C0503 03/29/2013 03/29/13 17:47 2,6-Dinitrotoluene ND 330 NA 1 B3C0503 03/29/2013 03/29/13 17:47 2-Chloronaphthalene ND 330 NA 1 B3C0503 03/29/2013 03/29/13 17:47 2-Chlorophenol ND 330 NA 1 B3C0503 03/29/2013 03/29/13 17:47 2-Methylnaphthalene ND 330 NA 1 B3C0503 03/29/2013 03/29/13 17:47 2-Methylphenol ND 330 NA 1 B3C0503 03/29/2013 03/29/13 17:47 2-Nitroaniline ND 1600 NA 1 B3C0503 03/29/2013 03/29/13 17:47 2-Nitrophenol ND 330 NA 1 B3C0503 03/29/2013 03/29/13 17:47 3,3´-Dichlorobenzidine ND 660 NA 1 B3C0503 03/29/2013 03/29/13 17:47 3-Nitroaniline ND 1600 NA 1 B3C0503 03/29/2013 03/29/13 17:47 4,6-Dinitro-2-methyphenol ND 1600 NA 1 B3C0503 03/29/2013 03/29/13 17:47 4-Bromophenyl-phenylether ND 330 NA 1 B3C0503 03/29/2013 03/29/13 17:47 4-Chloro-3-methylphenol ND 660 NA 1 B3C0503 03/29/2013 03/29/13 17:47 4-Chloroaniline ND 660 NA 1 B3C0503 03/29/2013 03/29/13 17:47 4-Chlorophenyl-phenylether ND 330 NA 1 B3C0503 03/29/2013 03/29/13 17:47 4-Methylphenol ND 330 NA 1 B3C0503 03/29/2013 03/29/13 17:47 4-Nitroaniline ND 1600 NA 1 B3C0503 03/29/2013 03/29/13 17:47 4-Nitrophenol ND 330 NA 1 B3C0503 03/29/2013 03/29/13 17:47 Acenaphthene ND 330 NA 1 B3C0503 03/29/2013 03/29/13 17:47 Acenaphthylene ND 330 NA 1 B3C0503 03/29/2013 03/29/13 17:47 Anthracene ND 330 NA 1 B3C0503 03/29/2013 03/29/13 17:47 Benzidine (M) ND 1600 NA 1 B3C0503 03/29/2013 03/29/13 17:47 Benzo(a)anthracene ND 330 NA 1 B3C0503 03/29/2013 03/29/13 17:47 Benzo(a)pyrene ND 330 NA 1 B3C0503 03/29/2013 03/29/13 17:47 Benzo(b)fluoranthene ND 330 NA 1 B3C0503 03/29/2013 03/29/13 17:47 Benzo(g,h,i)perylene ND 330 NA 1 B3C0503 03/29/2013 03/29/13 17:47 Benzo(k)fluoranthene ND 330 NA 1 B3C0503 03/29/2013 03/29/13 17:47 Benzoic acid ND 1600 NA 1 B3C0503 03/29/2013 03/29/13 17:47

3275 Walnut Avenue, Signal Hill, CA 90755 Tel: 562-989-4045 Fax: 562-989-4040 www.atlglobal.com Page 12 of 61 Certificate of Analysis

AMEC Project Number : Regional Connector, 4953-11-0471 6001 Rickenbacker Road Report To : Jay Neuhaus Los Angeles , CA 90040-3031 Reported : 04/08/2013

Client Sample ID E2-7-20' Lab ID: 1300952-04

Semivolatile Organic Compounds by EPA 8270C Analyst: BB

Result PQL MDL Date/Time Analyte (ug/kg) (ug/kg) (ug/kg) Dilution Batch Prepared Analyzed Notes

Benzyl alcohol ND 660 NA 1 B3C0503 03/29/2013 03/29/13 17:47 bis(2-chloroethoxy)methane ND 330 NA 1 B3C0503 03/29/2013 03/29/13 17:47 bis(2-Chloroethyl)ether ND 330 NA 1 B3C0503 03/29/2013 03/29/13 17:47 bis(2-chloroisopropyl)ether ND 330 NA 1 B3C0503 03/29/2013 03/29/13 17:47 bis(2-ethylhexyl)phthalate ND 330 NA 1 B3C0503 03/29/2013 03/29/13 17:47 Butylbenzylphthalate ND 330 NA 1 B3C0503 03/29/2013 03/29/13 17:47 Chrysene ND 330 NA 1 B3C0503 03/29/2013 03/29/13 17:47 Di-n-butylphthalate ND 330 NA 1 B3C0503 03/29/2013 03/29/13 17:47 Di-n-octylphthalate ND 330 NA 1 B3C0503 03/29/2013 03/29/13 17:47 Dibenz(a,h)anthracene ND 330 NA 1 B3C0503 03/29/2013 03/29/13 17:47 Dibenzofuran ND 330 NA 1 B3C0503 03/29/2013 03/29/13 17:47 Diethyl phthalate ND 330 NA 1 B3C0503 03/29/2013 03/29/13 17:47 Dimethyl phthalate ND 330 NA 1 B3C0503 03/29/2013 03/29/13 17:47 Fluoranthene ND 330 NA 1 B3C0503 03/29/2013 03/29/13 17:47 Fluorene ND 330 NA 1 B3C0503 03/29/2013 03/29/13 17:47 Hexachlorobenzene ND 330 NA 1 B3C0503 03/29/2013 03/29/13 17:47 Hexachlorobutadiene ND 660 NA 1 B3C0503 03/29/2013 03/29/13 17:47 Hexachlorocyclopentadiene ND 660 NA 1 B3C0503 03/29/2013 03/29/13 17:47 Hexachloroethane ND 330 NA 1 B3C0503 03/29/2013 03/29/13 17:47 Indeno(1,2,3-cd)pyrene ND 330 NA 1 B3C0503 03/29/2013 03/29/13 17:47 Isophorone ND 330 NA 1 B3C0503 03/29/2013 03/29/13 17:47 N-Nitroso-di-n propylamine ND 330 NA 1 B3C0503 03/29/2013 03/29/13 17:47 N-Nitrosodiphenylamine ND 330 NA 1 B3C0503 03/29/2013 03/29/13 17:47 Naphthalene ND 330 NA 1 B3C0503 03/29/2013 03/29/13 17:47 Nitrobenzene ND 330 NA 1 B3C0503 03/29/2013 03/29/13 17:47 Pentachlorophenol ND 1600 NA 1 B3C0503 03/29/2013 03/29/13 17:47 Phenanthrene ND 330 NA 1 B3C0503 03/29/2013 03/29/13 17:47 Phenol ND 330 NA 1 B3C0503 03/29/2013 03/29/13 17:47 Pyrene ND 330 NA 1 B3C0503 03/29/2013 03/29/13 17:47 Pyridine ND 1600 NA 1 B3C0503 03/29/2013 03/29/13 17:47 Surrogate: 1,2-Dichlorobenzene-d4 101 % 48 - 113 B3C0503 03/29/2013 03/29/13 17:47 Surrogate: 2,4,6-Tribromophenol 87.9 % 14 - 162 B3C0503 03/29/2013 03/29/13 17:47 Surrogate: 2-Chlorophenol-d4 112 % 40 - 117 B3C0503 03/29/2013 03/29/13 17:47 Surrogate: 2-Fluorobiphenyl 109 % 52 - 126 B3C0503 03/29/2013 03/29/13 17:47 Surrogate: 2-Fluorophenol 117 % 26 - 124 B3C0503 03/29/2013 03/29/13 17:47 Surrogate: 4-Terphenyl-d14 127 % 36 - 163 B3C0503 03/29/2013 03/29/13 17:47 Surrogate: Nitrobenzene-d5 113 % 42 - 118 B3C0503 03/29/2013 03/29/13 17:47

3275 Walnut Avenue, Signal Hill, CA 90755 Tel: 562-989-4045 Fax: 562-989-4040 www.atlglobal.com Page 13 of 61 Certificate of Analysis

AMEC Project Number : Regional Connector, 4953-11-0471 6001 Rickenbacker Road Report To : Jay Neuhaus Los Angeles , CA 90040-3031 Reported : 04/08/2013

Client Sample ID E2-7-20' Lab ID: 1300952-04

Semivolatile Organic Compounds by EPA 8270C Analyst: BB

Result PQL MDL Date/Time Analyte (ug/kg) (ug/kg) (ug/kg) Dilution Batch Prepared Analyzed Notes

Surrogate: Phenol-d5 111 % 29 - 124 B3C0503 03/29/2013 03/29/13 17:47

3275 Walnut Avenue, Signal Hill, CA 90755 Tel: 562-989-4045 Fax: 562-989-4040 www.atlglobal.com Page 14 of 61 Certificate of Analysis

AMEC Project Number : Regional Connector, 4953-11-0471 6001 Rickenbacker Road Report To : Jay Neuhaus Los Angeles , CA 90040-3031 Reported : 04/08/2013

Client Sample ID E2-7-30' Lab ID: 1300952-06

Title 22 Metals by ICP-AES EPA 6010B Analyst: PT

Result PQL MDL Date/Time Analyte (mg/kg) (mg/kg) (mg/kg) Dilution Batch Prepared Analyzed Notes

Antimony ND 2.0 NA 1 B3C0494 03/29/2013 04/01/13 09:11 Arsenic ND 1.0 NA 1 B3C0494 03/29/2013 04/01/13 09:11 Barium 220 1.0 NA 1 B3C0494 03/29/2013 04/01/13 09:11 Beryllium ND 1.0 NA 1 B3C0494 03/29/2013 04/01/13 09:11 Cadmium ND 1.0 NA 1 B3C0494 03/29/2013 04/01/13 09:11 Chromium 7.9 1.0 NA 1 B3C0494 03/29/2013 04/01/13 09:11 Cobalt 3.4 1.0 NA 1 B3C0494 03/29/2013 04/01/13 09:11 Copper 16 2.0 NA 1 B3C0494 03/29/2013 04/01/13 09:11 Lead 1.2 1.0 NA 1 B3C0494 03/29/2013 04/01/13 09:11 Molybdenum 1.1 1.0 NA 1 B3C0494 03/29/2013 04/01/13 09:11 Nickel 5.0 1.0 NA 1 B3C0494 03/29/2013 04/01/13 09:11 Selenium ND 1.0 NA 1 B3C0494 03/29/2013 04/01/13 09:11 Silver ND 1.0 NA 1 B3C0494 03/29/2013 04/01/13 09:11 Thallium ND 1.0 NA 1 B3C0494 03/29/2013 04/01/13 09:11 Vanadium 11 1.0 NA 1 B3C0494 03/29/2013 04/01/13 09:11 Zinc 19 1.0 NA 1 B3C0494 03/29/2013 04/01/13 09:11

Mercury by AA (Cold Vapor) EPA 7471 Analyst: VV

Result PQL MDL Date/Time Analyte (mg/kg) (mg/kg) (mg/kg) Dilution Batch Prepared Analyzed Notes

Mercury 0.10 0.10 NA 1 B3D0058 04/03/2013 04/03/13 16:08

Gasoline Range Organics by EPA 8015B (5035) Analyst: VN

Result PQL MDL Date/Time Analyte (mg/kg) (mg/kg) (mg/kg) Dilution Batch Prepared Analyzed Notes

Gasoline Range Organics ND 0.94 NA 1 B3C0499 03/29/2013 03/29/13 15:06 Surrogate: 4-Bromofluorobenzene 85.3 % 59 - 160 B3C0499 03/29/2013 03/29/13 15:06

Diesel Range Organics by EPA 8015B Analyst: CR

Result PQL MDL Date/Time Analyte (mg/kg) (mg/kg) (mg/kg) Dilution Batch Prepared Analyzed Notes

DRO ND 10 NA 1 B3C0492 03/29/2013 03/29/13 11:40 ORO ND 10 NA 1 B3C0492 03/29/2013 03/29/13 11:40 Surrogate: p-Terphenyl 93.8 % 62 - 136 B3C0492 03/29/2013 03/29/13 11:40

3275 Walnut Avenue, Signal Hill, CA 90755 Tel: 562-989-4045 Fax: 562-989-4040 www.atlglobal.com Page 15 of 61 Certificate of Analysis

AMEC Project Number : Regional Connector, 4953-11-0471 6001 Rickenbacker Road Report To : Jay Neuhaus Los Angeles , CA 90040-3031 Reported : 04/08/2013

Client Sample ID E2-7-30' Lab ID: 1300952-06

Volatile Organic Compounds by EPA 5035/EPA 8260 Analyst: TP

Result PQL MDL Date/Time Analyte (ug/kg) (ug/kg) (ug/kg) Dilution Batch Prepared Analyzed Notes

1,1,1,2-Tetrachloroethane ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 16:01 1,1,1-Trichloroethane ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 16:01 1,1,2,2-Tetrachloroethane ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 16:01 1,1,2-Trichloroethane ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 16:01 1,1-Dichloroethane ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 16:01 1,1-Dichloroethene ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 16:01 1,1-Dichloropropene ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 16:01 1,2,3-Trichloropropane ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 16:01 1,2,3-Trichlorobenzene ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 16:01 1,2,4-Trichlorobenzene ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 16:01 1,2,4-Trimethylbenzene ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 16:01 1,2-Dibromo-3-chloropropane ND 9.4 NA 1 B3C0501 03/27/2013 03/29/13 16:01 1,2-Dibromoethane ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 16:01 1,2-Dichlorobenzene ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 16:01 1,2-Dichloroethane ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 16:01 1,2-Dichloropropane ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 16:01 1,3,5-Trimethylbenzene ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 16:01 1,3-Dichlorobenzene ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 16:01 1,3-Dichloropropane ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 16:01 1,4-Dichlorobenzene ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 16:01 2,2-Dichloropropane ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 16:01 2-Chlorotoluene ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 16:01 4-Chlorotoluene ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 16:01 4-Isopropyltoluene ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 16:01 Benzene ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 16:01 Bromobenzene ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 16:01 Bromochloromethane ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 16:01 Bromodichloromethane ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 16:01 Bromoform ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 16:01 Bromomethane ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 16:01 Carbon disulfide ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 16:01 Carbon tetrachloride ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 16:01 Chlorobenzene ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 16:01 Chloroethane ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 16:01 Chloroform ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 16:01 Chloromethane ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 16:01 cis-1,2-Dichloroethene ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 16:01

3275 Walnut Avenue, Signal Hill, CA 90755 Tel: 562-989-4045 Fax: 562-989-4040 www.atlglobal.com Page 16 of 61 Certificate of Analysis

AMEC Project Number : Regional Connector, 4953-11-0471 6001 Rickenbacker Road Report To : Jay Neuhaus Los Angeles , CA 90040-3031 Reported : 04/08/2013

Client Sample ID E2-7-30' Lab ID: 1300952-06

Volatile Organic Compounds by EPA 5035/EPA 8260 Analyst: TP

Result PQL MDL Date/Time Analyte (ug/kg) (ug/kg) (ug/kg) Dilution Batch Prepared Analyzed Notes

cis-1,3-Dichloropropene ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 16:01 Di-isopropyl ether ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 16:01 Dibromochloromethane ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 16:01 Dibromomethane ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 16:01 Dichlorodifluoromethane ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 16:01 Ethyl Acetate ND 47 NA 1 B3C0501 03/27/2013 03/29/13 16:01 Ethyl Ether ND 47 NA 1 B3C0501 03/27/2013 03/29/13 16:01 Ethyl tert-butyl ether ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 16:01 Ethylbenzene ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 16:01 Freon-113 ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 16:01 Hexachlorobutadiene ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 16:01 Isopropylbenzene ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 16:01 m,p-Xylene ND 9.4 NA 1 B3C0501 03/27/2013 03/29/13 16:01 Methylene chloride ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 16:01 MTBE ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 16:01 n-Butylbenzene ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 16:01 n-Propylbenzene ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 16:01 Naphthalene ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 16:01 o-Xylene ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 16:01 sec-Butylbenzene ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 16:01 Styrene ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 16:01 tert-Amyl methyl ether ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 16:01 tert-Butanol ND 94 NA 1 B3C0501 03/27/2013 03/29/13 16:01 tert-Butylbenzene ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 16:01 Tetrachloroethene ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 16:01 Toluene ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 16:01 trans-1,2-Dichloroethene ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 16:01 trans-1,3-Dichloropropene ND 47 NA 1 B3C0501 03/27/2013 03/29/13 16:01 Trichloroethene ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 16:01 Trichlorofluoromethane ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 16:01 Vinyl acetate ND 47 NA 1 B3C0501 03/27/2013 03/29/13 16:01 Vinyl chloride ND 4.7 NA 1 B3C0501 03/27/2013 03/29/13 16:01 Surrogate: 1,2-Dichloroethane-d4 109 % 56 - 159 B3C0501 03/27/2013 03/29/13 16:01 Surrogate: 4-Bromofluorobenzene 103 % 69 - 131 B3C0501 03/27/2013 03/29/13 16:01 Surrogate: Dibromofluoromethane 112 % 60 - 127 B3C0501 03/27/2013 03/29/13 16:01 Surrogate: Toluene-d8 110 % 70 - 121 B3C0501 03/27/2013 03/29/13 16:01

3275 Walnut Avenue, Signal Hill, CA 90755 Tel: 562-989-4045 Fax: 562-989-4040 www.atlglobal.com Page 17 of 61 Certificate of Analysis

AMEC Project Number : Regional Connector, 4953-11-0471 6001 Rickenbacker Road Report To : Jay Neuhaus Los Angeles , CA 90040-3031 Reported : 04/08/2013

Client Sample ID E2-7-30' Lab ID: 1300952-06

Semivolatile Organic Compounds by EPA 8270C Analyst: BB

Result PQL MDL Date/Time Analyte (ug/kg) (ug/kg) (ug/kg) Dilution Batch Prepared Analyzed Notes

1,2,4-Trichlorobenzene ND 330 NA 1 B3C0503 03/29/2013 03/29/13 18:13 1,2-Dichlorobenzene ND 330 NA 1 B3C0503 03/29/2013 03/29/13 18:13 1,3-Dichlorobenzene ND 330 NA 1 B3C0503 03/29/2013 03/29/13 18:13 1,4-Dichlorobenzene ND 330 NA 1 B3C0503 03/29/2013 03/29/13 18:13 2,4,5-Trichlorophenol ND 330 NA 1 B3C0503 03/29/2013 03/29/13 18:13 2,4,6-Trichlorophenol ND 330 NA 1 B3C0503 03/29/2013 03/29/13 18:13 2,4-Dichlorophenol ND 1600 NA 1 B3C0503 03/29/2013 03/29/13 18:13 2,4-Dimethylphenol ND 330 NA 1 B3C0503 03/29/2013 03/29/13 18:13 2,4-Dinitrophenol ND 1600 NA 1 B3C0503 03/29/2013 03/29/13 18:13 2,4-Dinitrotoluene ND 330 NA 1 B3C0503 03/29/2013 03/29/13 18:13 2,6-Dinitrotoluene ND 330 NA 1 B3C0503 03/29/2013 03/29/13 18:13 2-Chloronaphthalene ND 330 NA 1 B3C0503 03/29/2013 03/29/13 18:13 2-Chlorophenol ND 330 NA 1 B3C0503 03/29/2013 03/29/13 18:13 2-Methylnaphthalene ND 330 NA 1 B3C0503 03/29/2013 03/29/13 18:13 2-Methylphenol ND 330 NA 1 B3C0503 03/29/2013 03/29/13 18:13 2-Nitroaniline ND 1600 NA 1 B3C0503 03/29/2013 03/29/13 18:13 2-Nitrophenol ND 330 NA 1 B3C0503 03/29/2013 03/29/13 18:13 3,3´-Dichlorobenzidine ND 660 NA 1 B3C0503 03/29/2013 03/29/13 18:13 3-Nitroaniline ND 1600 NA 1 B3C0503 03/29/2013 03/29/13 18:13 4,6-Dinitro-2-methyphenol ND 1600 NA 1 B3C0503 03/29/2013 03/29/13 18:13 4-Bromophenyl-phenylether ND 330 NA 1 B3C0503 03/29/2013 03/29/13 18:13 4-Chloro-3-methylphenol ND 660 NA 1 B3C0503 03/29/2013 03/29/13 18:13 4-Chloroaniline ND 660 NA 1 B3C0503 03/29/2013 03/29/13 18:13 4-Chlorophenyl-phenylether ND 330 NA 1 B3C0503 03/29/2013 03/29/13 18:13 4-Methylphenol ND 330 NA 1 B3C0503 03/29/2013 03/29/13 18:13 4-Nitroaniline ND 1600 NA 1 B3C0503 03/29/2013 03/29/13 18:13 4-Nitrophenol ND 330 NA 1 B3C0503 03/29/2013 03/29/13 18:13 Acenaphthene ND 330 NA 1 B3C0503 03/29/2013 03/29/13 18:13 Acenaphthylene ND 330 NA 1 B3C0503 03/29/2013 03/29/13 18:13 Anthracene ND 330 NA 1 B3C0503 03/29/2013 03/29/13 18:13 Benzidine (M) ND 1600 NA 1 B3C0503 03/29/2013 03/29/13 18:13 Benzo(a)anthracene ND 330 NA 1 B3C0503 03/29/2013 03/29/13 18:13 Benzo(a)pyrene ND 330 NA 1 B3C0503 03/29/2013 03/29/13 18:13 Benzo(b)fluoranthene ND 330 NA 1 B3C0503 03/29/2013 03/29/13 18:13 Benzo(g,h,i)perylene ND 330 NA 1 B3C0503 03/29/2013 03/29/13 18:13 Benzo(k)fluoranthene ND 330 NA 1 B3C0503 03/29/2013 03/29/13 18:13 Benzoic acid ND 1600 NA 1 B3C0503 03/29/2013 03/29/13 18:13

3275 Walnut Avenue, Signal Hill, CA 90755 Tel: 562-989-4045 Fax: 562-989-4040 www.atlglobal.com Page 18 of 61 Certificate of Analysis

AMEC Project Number : Regional Connector, 4953-11-0471 6001 Rickenbacker Road Report To : Jay Neuhaus Los Angeles , CA 90040-3031 Reported : 04/08/2013

Client Sample ID E2-7-30' Lab ID: 1300952-06

Semivolatile Organic Compounds by EPA 8270C Analyst: BB

Result PQL MDL Date/Time Analyte (ug/kg) (ug/kg) (ug/kg) Dilution Batch Prepared Analyzed Notes

Benzyl alcohol ND 660 NA 1 B3C0503 03/29/2013 03/29/13 18:13 bis(2-chloroethoxy)methane ND 330 NA 1 B3C0503 03/29/2013 03/29/13 18:13 bis(2-Chloroethyl)ether ND 330 NA 1 B3C0503 03/29/2013 03/29/13 18:13 bis(2-chloroisopropyl)ether ND 330 NA 1 B3C0503 03/29/2013 03/29/13 18:13 bis(2-ethylhexyl)phthalate ND 330 NA 1 B3C0503 03/29/2013 03/29/13 18:13 Butylbenzylphthalate ND 330 NA 1 B3C0503 03/29/2013 03/29/13 18:13 Chrysene ND 330 NA 1 B3C0503 03/29/2013 03/29/13 18:13 Di-n-butylphthalate ND 330 NA 1 B3C0503 03/29/2013 03/29/13 18:13 Di-n-octylphthalate ND 330 NA 1 B3C0503 03/29/2013 03/29/13 18:13 Dibenz(a,h)anthracene ND 330 NA 1 B3C0503 03/29/2013 03/29/13 18:13 Dibenzofuran ND 330 NA 1 B3C0503 03/29/2013 03/29/13 18:13 Diethyl phthalate ND 330 NA 1 B3C0503 03/29/2013 03/29/13 18:13 Dimethyl phthalate ND 330 NA 1 B3C0503 03/29/2013 03/29/13 18:13 Fluoranthene ND 330 NA 1 B3C0503 03/29/2013 03/29/13 18:13 Fluorene ND 330 NA 1 B3C0503 03/29/2013 03/29/13 18:13 Hexachlorobenzene ND 330 NA 1 B3C0503 03/29/2013 03/29/13 18:13 Hexachlorobutadiene ND 660 NA 1 B3C0503 03/29/2013 03/29/13 18:13 Hexachlorocyclopentadiene ND 660 NA 1 B3C0503 03/29/2013 03/29/13 18:13 Hexachloroethane ND 330 NA 1 B3C0503 03/29/2013 03/29/13 18:13 Indeno(1,2,3-cd)pyrene ND 330 NA 1 B3C0503 03/29/2013 03/29/13 18:13 Isophorone ND 330 NA 1 B3C0503 03/29/2013 03/29/13 18:13 N-Nitroso-di-n propylamine ND 330 NA 1 B3C0503 03/29/2013 03/29/13 18:13 N-Nitrosodiphenylamine ND 330 NA 1 B3C0503 03/29/2013 03/29/13 18:13 Naphthalene ND 330 NA 1 B3C0503 03/29/2013 03/29/13 18:13 Nitrobenzene ND 330 NA 1 B3C0503 03/29/2013 03/29/13 18:13 Pentachlorophenol ND 1600 NA 1 B3C0503 03/29/2013 03/29/13 18:13 Phenanthrene ND 330 NA 1 B3C0503 03/29/2013 03/29/13 18:13 Phenol ND 330 NA 1 B3C0503 03/29/2013 03/29/13 18:13 Pyrene ND 330 NA 1 B3C0503 03/29/2013 03/29/13 18:13 Pyridine ND 1600 NA 1 B3C0503 03/29/2013 03/29/13 18:13 Surrogate: 1,2-Dichlorobenzene-d4 97.3 % 48 - 113 B3C0503 03/29/2013 03/29/13 18:13 Surrogate: 2,4,6-Tribromophenol 64.4 % 14 - 162 B3C0503 03/29/2013 03/29/13 18:13 Surrogate: 2-Chlorophenol-d4 97.3 % 40 - 117 B3C0503 03/29/2013 03/29/13 18:13 Surrogate: 2-Fluorobiphenyl 103 % 52 - 126 B3C0503 03/29/2013 03/29/13 18:13 Surrogate: 2-Fluorophenol 96.5 % 26 - 124 B3C0503 03/29/2013 03/29/13 18:13 Surrogate: 4-Terphenyl-d14 116 % 36 - 163 B3C0503 03/29/2013 03/29/13 18:13 Surrogate: Nitrobenzene-d5 112 % 42 - 118 B3C0503 03/29/2013 03/29/13 18:13

3275 Walnut Avenue, Signal Hill, CA 90755 Tel: 562-989-4045 Fax: 562-989-4040 www.atlglobal.com Page 19 of 61 Certificate of Analysis

AMEC Project Number : Regional Connector, 4953-11-0471 6001 Rickenbacker Road Report To : Jay Neuhaus Los Angeles , CA 90040-3031 Reported : 04/08/2013

Client Sample ID E2-7-30' Lab ID: 1300952-06

Semivolatile Organic Compounds by EPA 8270C Analyst: BB

Result PQL MDL Date/Time Analyte (ug/kg) (ug/kg) (ug/kg) Dilution Batch Prepared Analyzed Notes

Surrogate: Phenol-d5 96.8 % 29 - 124 B3C0503 03/29/2013 03/29/13 18:13

3275 Walnut Avenue, Signal Hill, CA 90755 Tel: 562-989-4045 Fax: 562-989-4040 www.atlglobal.com Page 20 of 61 Certificate of Analysis

AMEC Project Number : Regional Connector, 4953-11-0471 6001 Rickenbacker Road Report To : Jay Neuhaus Los Angeles , CA 90040-3031 Reported : 04/08/2013

Client Sample ID E2-7-45' Lab ID: 1300952-09

Title 22 Metals by ICP-AES EPA 6010B Analyst: PT

Result PQL MDL Date/Time Analyte (mg/kg) (mg/kg) (mg/kg) Dilution Batch Prepared Analyzed Notes

Antimony ND 2.0 NA 1 B3C0494 03/29/2013 04/01/13 09:13 Arsenic ND 1.0 NA 1 B3C0494 03/29/2013 04/01/13 09:13 Barium 18 1.0 NA 1 B3C0494 03/29/2013 04/01/13 09:13 Beryllium ND 1.0 NA 1 B3C0494 03/29/2013 04/01/13 09:13 Cadmium ND 1.0 NA 1 B3C0494 03/29/2013 04/01/13 09:13 Chromium 6.9 1.0 NA 1 B3C0494 03/29/2013 04/01/13 09:13 Cobalt ND 1.0 NA 1 B3C0494 03/29/2013 04/01/13 09:13 Copper 53 2.0 NA 1 B3C0494 03/29/2013 04/01/13 09:13 Lead ND 1.0 NA 1 B3C0494 03/29/2013 04/01/13 09:13 Molybdenum ND 1.0 NA 1 B3C0494 03/29/2013 04/01/13 09:13 Nickel ND 1.0 NA 1 B3C0494 03/29/2013 04/01/13 09:13 Selenium ND 1.0 NA 1 B3C0494 03/29/2013 04/01/13 09:13 Silver ND 1.0 NA 1 B3C0494 03/29/2013 04/01/13 09:13 Thallium ND 1.0 NA 1 B3C0494 03/29/2013 04/01/13 09:13 Vanadium 1.8 1.0 NA 1 B3C0494 03/29/2013 04/01/13 09:13 Zinc 53 1.0 NA 1 B3C0494 03/29/2013 04/01/13 09:13

Mercury by AA (Cold Vapor) EPA 7471 Analyst: VV

Result PQL MDL Date/Time Analyte (mg/kg) (mg/kg) (mg/kg) Dilution Batch Prepared Analyzed Notes

Mercury ND 0.10 NA 1 B3D0058 04/03/2013 04/03/13 16:10

Gasoline Range Organics by EPA 8015B (5035) Analyst: VN

Result PQL MDL Date/Time Analyte (mg/kg) (mg/kg) (mg/kg) Dilution Batch Prepared Analyzed Notes

Gasoline Range Organics ND 1.1 NA 1 B3C0499 03/29/2013 03/29/13 15:22 Surrogate: 4-Bromofluorobenzene 73.8 % 59 - 160 B3C0499 03/29/2013 03/29/13 15:22

Diesel Range Organics by EPA 8015B Analyst: CR

Result PQL MDL Date/Time Analyte (mg/kg) (mg/kg) (mg/kg) Dilution Batch Prepared Analyzed Notes

DRO ND 10 NA 1 B3C0492 03/29/2013 03/29/13 11:56 ORO ND 10 NA 1 B3C0492 03/29/2013 03/29/13 11:56 Surrogate: p-Terphenyl 91.1 % 62 - 136 B3C0492 03/29/2013 03/29/13 11:56

3275 Walnut Avenue, Signal Hill, CA 90755 Tel: 562-989-4045 Fax: 562-989-4040 www.atlglobal.com Page 21 of 61 Certificate of Analysis

AMEC Project Number : Regional Connector, 4953-11-0471 6001 Rickenbacker Road Report To : Jay Neuhaus Los Angeles , CA 90040-3031 Reported : 04/08/2013

Client Sample ID E2-7-45' Lab ID: 1300952-09

Volatile Organic Compounds by EPA 5035/EPA 8260 Analyst: TP

Result PQL MDL Date/Time Analyte (ug/kg) (ug/kg) (ug/kg) Dilution Batch Prepared Analyzed Notes

1,1,1,2-Tetrachloroethane ND 5.6 NA 1 B3C0501 03/27/2013 03/29/13 16:21 1,1,1-Trichloroethane ND 5.6 NA 1 B3C0501 03/27/2013 03/29/13 16:21 1,1,2,2-Tetrachloroethane ND 5.6 NA 1 B3C0501 03/27/2013 03/29/13 16:21 1,1,2-Trichloroethane ND 5.6 NA 1 B3C0501 03/27/2013 03/29/13 16:21 1,1-Dichloroethane ND 5.6 NA 1 B3C0501 03/27/2013 03/29/13 16:21 1,1-Dichloroethene ND 5.6 NA 1 B3C0501 03/27/2013 03/29/13 16:21 1,1-Dichloropropene ND 5.6 NA 1 B3C0501 03/27/2013 03/29/13 16:21 1,2,3-Trichloropropane ND 5.6 NA 1 B3C0501 03/27/2013 03/29/13 16:21 1,2,3-Trichlorobenzene ND 5.6 NA 1 B3C0501 03/27/2013 03/29/13 16:21 1,2,4-Trichlorobenzene ND 5.6 NA 1 B3C0501 03/27/2013 03/29/13 16:21 1,2,4-Trimethylbenzene ND 5.6 NA 1 B3C0501 03/27/2013 03/29/13 16:21 1,2-Dibromo-3-chloropropane ND 11 NA 1 B3C0501 03/27/2013 03/29/13 16:21 1,2-Dibromoethane ND 5.6 NA 1 B3C0501 03/27/2013 03/29/13 16:21 1,2-Dichlorobenzene ND 5.6 NA 1 B3C0501 03/27/2013 03/29/13 16:21 1,2-Dichloroethane ND 5.6 NA 1 B3C0501 03/27/2013 03/29/13 16:21 1,2-Dichloropropane ND 5.6 NA 1 B3C0501 03/27/2013 03/29/13 16:21 1,3,5-Trimethylbenzene ND 5.6 NA 1 B3C0501 03/27/2013 03/29/13 16:21 1,3-Dichlorobenzene ND 5.6 NA 1 B3C0501 03/27/2013 03/29/13 16:21 1,3-Dichloropropane ND 5.6 NA 1 B3C0501 03/27/2013 03/29/13 16:21 1,4-Dichlorobenzene ND 5.6 NA 1 B3C0501 03/27/2013 03/29/13 16:21 2,2-Dichloropropane ND 5.6 NA 1 B3C0501 03/27/2013 03/29/13 16:21 2-Chlorotoluene ND 5.6 NA 1 B3C0501 03/27/2013 03/29/13 16:21 4-Chlorotoluene ND 5.6 NA 1 B3C0501 03/27/2013 03/29/13 16:21 4-Isopropyltoluene ND 5.6 NA 1 B3C0501 03/27/2013 03/29/13 16:21 Benzene ND 5.6 NA 1 B3C0501 03/27/2013 03/29/13 16:21 Bromobenzene ND 5.6 NA 1 B3C0501 03/27/2013 03/29/13 16:21 Bromochloromethane ND 5.6 NA 1 B3C0501 03/27/2013 03/29/13 16:21 Bromodichloromethane ND 5.6 NA 1 B3C0501 03/27/2013 03/29/13 16:21 Bromoform ND 5.6 NA 1 B3C0501 03/27/2013 03/29/13 16:21 Bromomethane ND 5.6 NA 1 B3C0501 03/27/2013 03/29/13 16:21 Carbon disulfide ND 5.6 NA 1 B3C0501 03/27/2013 03/29/13 16:21 Carbon tetrachloride ND 5.6 NA 1 B3C0501 03/27/2013 03/29/13 16:21 Chlorobenzene ND 5.6 NA 1 B3C0501 03/27/2013 03/29/13 16:21 Chloroethane ND 5.6 NA 1 B3C0501 03/27/2013 03/29/13 16:21 Chloroform ND 5.6 NA 1 B3C0501 03/27/2013 03/29/13 16:21 Chloromethane ND 5.6 NA 1 B3C0501 03/27/2013 03/29/13 16:21 cis-1,2-Dichloroethene ND 5.6 NA 1 B3C0501 03/27/2013 03/29/13 16:21

3275 Walnut Avenue, Signal Hill, CA 90755 Tel: 562-989-4045 Fax: 562-989-4040 www.atlglobal.com Page 22 of 61 Certificate of Analysis

AMEC Project Number : Regional Connector, 4953-11-0471 6001 Rickenbacker Road Report To : Jay Neuhaus Los Angeles , CA 90040-3031 Reported : 04/08/2013

Client Sample ID E2-7-45' Lab ID: 1300952-09

Volatile Organic Compounds by EPA 5035/EPA 8260 Analyst: TP

Result PQL MDL Date/Time Analyte (ug/kg) (ug/kg) (ug/kg) Dilution Batch Prepared Analyzed Notes

cis-1,3-Dichloropropene ND 5.6 NA 1 B3C0501 03/27/2013 03/29/13 16:21 Di-isopropyl ether ND 5.6 NA 1 B3C0501 03/27/2013 03/29/13 16:21 Dibromochloromethane ND 5.6 NA 1 B3C0501 03/27/2013 03/29/13 16:21 Dibromomethane ND 5.6 NA 1 B3C0501 03/27/2013 03/29/13 16:21 Dichlorodifluoromethane ND 5.6 NA 1 B3C0501 03/27/2013 03/29/13 16:21 Ethyl Acetate ND 56 NA 1 B3C0501 03/27/2013 03/29/13 16:21 Ethyl Ether ND 56 NA 1 B3C0501 03/27/2013 03/29/13 16:21 Ethyl tert-butyl ether ND 5.6 NA 1 B3C0501 03/27/2013 03/29/13 16:21 Ethylbenzene ND 5.6 NA 1 B3C0501 03/27/2013 03/29/13 16:21 Freon-113 ND 5.6 NA 1 B3C0501 03/27/2013 03/29/13 16:21 Hexachlorobutadiene ND 5.6 NA 1 B3C0501 03/27/2013 03/29/13 16:21 Isopropylbenzene ND 5.6 NA 1 B3C0501 03/27/2013 03/29/13 16:21 m,p-Xylene ND 11 NA 1 B3C0501 03/27/2013 03/29/13 16:21 Methylene chloride ND 5.6 NA 1 B3C0501 03/27/2013 03/29/13 16:21 MTBE ND 5.6 NA 1 B3C0501 03/27/2013 03/29/13 16:21 n-Butylbenzene ND 5.6 NA 1 B3C0501 03/27/2013 03/29/13 16:21 n-Propylbenzene ND 5.6 NA 1 B3C0501 03/27/2013 03/29/13 16:21 Naphthalene ND 5.6 NA 1 B3C0501 03/27/2013 03/29/13 16:21 o-Xylene ND 5.6 NA 1 B3C0501 03/27/2013 03/29/13 16:21 sec-Butylbenzene ND 5.6 NA 1 B3C0501 03/27/2013 03/29/13 16:21 Styrene ND 5.6 NA 1 B3C0501 03/27/2013 03/29/13 16:21 tert-Amyl methyl ether ND 5.6 NA 1 B3C0501 03/27/2013 03/29/13 16:21 tert-Butanol ND 110 NA 1 B3C0501 03/27/2013 03/29/13 16:21 tert-Butylbenzene ND 5.6 NA 1 B3C0501 03/27/2013 03/29/13 16:21 Tetrachloroethene ND 5.6 NA 1 B3C0501 03/27/2013 03/29/13 16:21 Toluene ND 5.6 NA 1 B3C0501 03/27/2013 03/29/13 16:21 trans-1,2-Dichloroethene ND 5.6 NA 1 B3C0501 03/27/2013 03/29/13 16:21 trans-1,3-Dichloropropene ND 56 NA 1 B3C0501 03/27/2013 03/29/13 16:21 Trichloroethene ND 5.6 NA 1 B3C0501 03/27/2013 03/29/13 16:21 Trichlorofluoromethane ND 5.6 NA 1 B3C0501 03/27/2013 03/29/13 16:21 Vinyl acetate ND 56 NA 1 B3C0501 03/27/2013 03/29/13 16:21 Vinyl chloride ND 5.6 NA 1 B3C0501 03/27/2013 03/29/13 16:21 Surrogate: 1,2-Dichloroethane-d4 106 % 56 - 159 B3C0501 03/27/2013 03/29/13 16:21 Surrogate: 4-Bromofluorobenzene 104 % 69 - 131 B3C0501 03/27/2013 03/29/13 16:21 Surrogate: Dibromofluoromethane 108 % 60 - 127 B3C0501 03/27/2013 03/29/13 16:21 Surrogate: Toluene-d8 110 % 70 - 121 B3C0501 03/27/2013 03/29/13 16:21

3275 Walnut Avenue, Signal Hill, CA 90755 Tel: 562-989-4045 Fax: 562-989-4040 www.atlglobal.com Page 23 of 61 Certificate of Analysis

AMEC Project Number : Regional Connector, 4953-11-0471 6001 Rickenbacker Road Report To : Jay Neuhaus Los Angeles , CA 90040-3031 Reported : 04/08/2013

Client Sample ID E2-7-45' Lab ID: 1300952-09

Semivolatile Organic Compounds by EPA 8270C Analyst: BB

Result PQL MDL Date/Time Analyte (ug/kg) (ug/kg) (ug/kg) Dilution Batch Prepared Analyzed Notes

1,2,4-Trichlorobenzene ND 330 NA 1 B3C0503 03/29/2013 03/29/13 18:39 1,2-Dichlorobenzene ND 330 NA 1 B3C0503 03/29/2013 03/29/13 18:39 1,3-Dichlorobenzene ND 330 NA 1 B3C0503 03/29/2013 03/29/13 18:39 1,4-Dichlorobenzene ND 330 NA 1 B3C0503 03/29/2013 03/29/13 18:39 2,4,5-Trichlorophenol ND 330 NA 1 B3C0503 03/29/2013 03/29/13 18:39 2,4,6-Trichlorophenol ND 330 NA 1 B3C0503 03/29/2013 03/29/13 18:39 2,4-Dichlorophenol ND 1600 NA 1 B3C0503 03/29/2013 03/29/13 18:39 2,4-Dimethylphenol ND 330 NA 1 B3C0503 03/29/2013 03/29/13 18:39 2,4-Dinitrophenol ND 1600 NA 1 B3C0503 03/29/2013 03/29/13 18:39 2,4-Dinitrotoluene ND 330 NA 1 B3C0503 03/29/2013 03/29/13 18:39 2,6-Dinitrotoluene ND 330 NA 1 B3C0503 03/29/2013 03/29/13 18:39 2-Chloronaphthalene ND 330 NA 1 B3C0503 03/29/2013 03/29/13 18:39 2-Chlorophenol ND 330 NA 1 B3C0503 03/29/2013 03/29/13 18:39 2-Methylnaphthalene ND 330 NA 1 B3C0503 03/29/2013 03/29/13 18:39 2-Methylphenol ND 330 NA 1 B3C0503 03/29/2013 03/29/13 18:39 2-Nitroaniline ND 1600 NA 1 B3C0503 03/29/2013 03/29/13 18:39 2-Nitrophenol ND 330 NA 1 B3C0503 03/29/2013 03/29/13 18:39 3,3´-Dichlorobenzidine ND 660 NA 1 B3C0503 03/29/2013 03/29/13 18:39 3-Nitroaniline ND 1600 NA 1 B3C0503 03/29/2013 03/29/13 18:39 4,6-Dinitro-2-methyphenol ND 1600 NA 1 B3C0503 03/29/2013 03/29/13 18:39 4-Bromophenyl-phenylether ND 330 NA 1 B3C0503 03/29/2013 03/29/13 18:39 4-Chloro-3-methylphenol ND 660 NA 1 B3C0503 03/29/2013 03/29/13 18:39 4-Chloroaniline ND 660 NA 1 B3C0503 03/29/2013 03/29/13 18:39 4-Chlorophenyl-phenylether ND 330 NA 1 B3C0503 03/29/2013 03/29/13 18:39 4-Methylphenol ND 330 NA 1 B3C0503 03/29/2013 03/29/13 18:39 4-Nitroaniline ND 1600 NA 1 B3C0503 03/29/2013 03/29/13 18:39 4-Nitrophenol ND 330 NA 1 B3C0503 03/29/2013 03/29/13 18:39 Acenaphthene ND 330 NA 1 B3C0503 03/29/2013 03/29/13 18:39 Acenaphthylene ND 330 NA 1 B3C0503 03/29/2013 03/29/13 18:39 Anthracene ND 330 NA 1 B3C0503 03/29/2013 03/29/13 18:39 Benzidine (M) ND 1600 NA 1 B3C0503 03/29/2013 03/29/13 18:39 Benzo(a)anthracene ND 330 NA 1 B3C0503 03/29/2013 03/29/13 18:39 Benzo(a)pyrene ND 330 NA 1 B3C0503 03/29/2013 03/29/13 18:39 Benzo(b)fluoranthene ND 330 NA 1 B3C0503 03/29/2013 03/29/13 18:39 Benzo(g,h,i)perylene ND 330 NA 1 B3C0503 03/29/2013 03/29/13 18:39 Benzo(k)fluoranthene ND 330 NA 1 B3C0503 03/29/2013 03/29/13 18:39 Benzoic acid ND 1600 NA 1 B3C0503 03/29/2013 03/29/13 18:39

3275 Walnut Avenue, Signal Hill, CA 90755 Tel: 562-989-4045 Fax: 562-989-4040 www.atlglobal.com Page 24 of 61 Certificate of Analysis

AMEC Project Number : Regional Connector, 4953-11-0471 6001 Rickenbacker Road Report To : Jay Neuhaus Los Angeles , CA 90040-3031 Reported : 04/08/2013

Client Sample ID E2-7-45' Lab ID: 1300952-09

Semivolatile Organic Compounds by EPA 8270C Analyst: BB

Result PQL MDL Date/Time Analyte (ug/kg) (ug/kg) (ug/kg) Dilution Batch Prepared Analyzed Notes

Benzyl alcohol ND 660 NA 1 B3C0503 03/29/2013 03/29/13 18:39 bis(2-chloroethoxy)methane ND 330 NA 1 B3C0503 03/29/2013 03/29/13 18:39 bis(2-Chloroethyl)ether ND 330 NA 1 B3C0503 03/29/2013 03/29/13 18:39 bis(2-chloroisopropyl)ether ND 330 NA 1 B3C0503 03/29/2013 03/29/13 18:39 bis(2-ethylhexyl)phthalate ND 330 NA 1 B3C0503 03/29/2013 03/29/13 18:39 Butylbenzylphthalate ND 330 NA 1 B3C0503 03/29/2013 03/29/13 18:39 Chrysene ND 330 NA 1 B3C0503 03/29/2013 03/29/13 18:39 Di-n-butylphthalate ND 330 NA 1 B3C0503 03/29/2013 03/29/13 18:39 Di-n-octylphthalate ND 330 NA 1 B3C0503 03/29/2013 03/29/13 18:39 Dibenz(a,h)anthracene ND 330 NA 1 B3C0503 03/29/2013 03/29/13 18:39 Dibenzofuran ND 330 NA 1 B3C0503 03/29/2013 03/29/13 18:39 Diethyl phthalate ND 330 NA 1 B3C0503 03/29/2013 03/29/13 18:39 Dimethyl phthalate ND 330 NA 1 B3C0503 03/29/2013 03/29/13 18:39 Fluoranthene ND 330 NA 1 B3C0503 03/29/2013 03/29/13 18:39 Fluorene ND 330 NA 1 B3C0503 03/29/2013 03/29/13 18:39 Hexachlorobenzene ND 330 NA 1 B3C0503 03/29/2013 03/29/13 18:39 Hexachlorobutadiene ND 660 NA 1 B3C0503 03/29/2013 03/29/13 18:39 Hexachlorocyclopentadiene ND 660 NA 1 B3C0503 03/29/2013 03/29/13 18:39 Hexachloroethane ND 330 NA 1 B3C0503 03/29/2013 03/29/13 18:39 Indeno(1,2,3-cd)pyrene ND 330 NA 1 B3C0503 03/29/2013 03/29/13 18:39 Isophorone ND 330 NA 1 B3C0503 03/29/2013 03/29/13 18:39 N-Nitroso-di-n propylamine ND 330 NA 1 B3C0503 03/29/2013 03/29/13 18:39 N-Nitrosodiphenylamine ND 330 NA 1 B3C0503 03/29/2013 03/29/13 18:39 Naphthalene ND 330 NA 1 B3C0503 03/29/2013 03/29/13 18:39 Nitrobenzene ND 330 NA 1 B3C0503 03/29/2013 03/29/13 18:39 Pentachlorophenol ND 1600 NA 1 B3C0503 03/29/2013 03/29/13 18:39 Phenanthrene ND 330 NA 1 B3C0503 03/29/2013 03/29/13 18:39 Phenol ND 330 NA 1 B3C0503 03/29/2013 03/29/13 18:39 Pyrene ND 330 NA 1 B3C0503 03/29/2013 03/29/13 18:39 Pyridine ND 1600 NA 1 B3C0503 03/29/2013 03/29/13 18:39 Surrogate: 1,2-Dichlorobenzene-d4 80.4 % 48 - 113 B3C0503 03/29/2013 03/29/13 18:39 Surrogate: 2,4,6-Tribromophenol 77.5 % 14 - 162 B3C0503 03/29/2013 03/29/13 18:39 Surrogate: 2-Chlorophenol-d4 85.5 % 40 - 117 B3C0503 03/29/2013 03/29/13 18:39 Surrogate: 2-Fluorobiphenyl 84.8 % 52 - 126 B3C0503 03/29/2013 03/29/13 18:39 Surrogate: 2-Fluorophenol 90.8 % 26 - 124 B3C0503 03/29/2013 03/29/13 18:39 Surrogate: 4-Terphenyl-d14 105 % 36 - 163 B3C0503 03/29/2013 03/29/13 18:39 Surrogate: Nitrobenzene-d5 81.8 % 42 - 118 B3C0503 03/29/2013 03/29/13 18:39

3275 Walnut Avenue, Signal Hill, CA 90755 Tel: 562-989-4045 Fax: 562-989-4040 www.atlglobal.com Page 25 of 61 Certificate of Analysis

AMEC Project Number : Regional Connector, 4953-11-0471 6001 Rickenbacker Road Report To : Jay Neuhaus Los Angeles , CA 90040-3031 Reported : 04/08/2013

Client Sample ID E2-7-45' Lab ID: 1300952-09

Semivolatile Organic Compounds by EPA 8270C Analyst: BB

Result PQL MDL Date/Time Analyte (ug/kg) (ug/kg) (ug/kg) Dilution Batch Prepared Analyzed Notes

Surrogate: Phenol-d5 86.3 % 29 - 124 B3C0503 03/29/2013 03/29/13 18:39

3275 Walnut Avenue, Signal Hill, CA 90755 Tel: 562-989-4045 Fax: 562-989-4040 www.atlglobal.com Page 26 of 61 Certificate of Analysis

AMEC Project Number : Regional Connector, 4953-11-0471 6001 Rickenbacker Road Report To : Jay Neuhaus Los Angeles , CA 90040-3031 Reported : 04/08/2013

Client Sample ID E2-7-55' Lab ID: 1300952-11

Title 22 Metals by ICP-AES EPA 6010B Analyst: PT

Result PQL MDL Date/Time Analyte (mg/kg) (mg/kg) (mg/kg) Dilution Batch Prepared Analyzed Notes

Antimony ND 2.0 NA 1 B3C0494 03/29/2013 04/01/13 09:15 Arsenic 7.2 1.0 NA 1 B3C0494 03/29/2013 04/01/13 09:15 Barium 140 1.0 NA 1 B3C0494 03/29/2013 04/01/13 09:15 Beryllium ND 1.0 NA 1 B3C0494 03/29/2013 04/01/13 09:15 Cadmium ND 1.0 NA 1 B3C0494 03/29/2013 04/01/13 09:15 Chromium 24 1.0 NA 1 B3C0494 03/29/2013 04/01/13 09:15 Cobalt 9.0 1.0 NA 1 B3C0494 03/29/2013 04/01/13 09:15 Copper 52 2.0 NA 1 B3C0494 03/29/2013 04/01/13 09:15 Lead 5.4 1.0 NA 1 B3C0494 03/29/2013 04/01/13 09:15 Molybdenum ND 1.0 NA 1 B3C0494 03/29/2013 04/01/13 09:15 Nickel 18 1.0 NA 1 B3C0494 03/29/2013 04/01/13 09:15 Selenium ND 1.0 NA 1 B3C0494 03/29/2013 04/01/13 09:15 Silver ND 1.0 NA 1 B3C0494 03/29/2013 04/01/13 09:15 Thallium ND 1.0 NA 1 B3C0494 03/29/2013 04/01/13 09:15 Vanadium 38 1.0 NA 1 B3C0494 03/29/2013 04/01/13 09:15 Zinc 65 1.0 NA 1 B3C0494 03/29/2013 04/01/13 09:15

Mercury by AA (Cold Vapor) EPA 7471 Analyst: VV

Result PQL MDL Date/Time Analyte (mg/kg) (mg/kg) (mg/kg) Dilution Batch Prepared Analyzed Notes

Mercury 0.12 0.10 NA 1 B3D0058 04/03/2013 04/03/13 16:16

Gasoline Range Organics by EPA 8015B (5035) Analyst: VN

Result PQL MDL Date/Time Analyte (mg/kg) (mg/kg) (mg/kg) Dilution Batch Prepared Analyzed Notes

Gasoline Range Organics ND 0.82 NA 1 B3C0499 03/29/2013 03/29/13 15:37 Surrogate: 4-Bromofluorobenzene 85.7 % 59 - 160 B3C0499 03/29/2013 03/29/13 15:37

Diesel Range Organics by EPA 8015B Analyst: CR

Result PQL MDL Date/Time Analyte (mg/kg) (mg/kg) (mg/kg) Dilution Batch Prepared Analyzed Notes

DRO ND 10 NA 1 B3C0492 03/29/2013 03/29/13 12:13 ORO ND 10 NA 1 B3C0492 03/29/2013 03/29/13 12:13 Surrogate: p-Terphenyl 91.9 % 62 - 136 B3C0492 03/29/2013 03/29/13 12:13

3275 Walnut Avenue, Signal Hill, CA 90755 Tel: 562-989-4045 Fax: 562-989-4040 www.atlglobal.com Page 27 of 61 Certificate of Analysis

AMEC Project Number : Regional Connector, 4953-11-0471 6001 Rickenbacker Road Report To : Jay Neuhaus Los Angeles , CA 90040-3031 Reported : 04/08/2013

Client Sample ID E2-7-55' Lab ID: 1300952-11

Volatile Organic Compounds by EPA 5035/EPA 8260 Analyst: TP

Result PQL MDL Date/Time Analyte (ug/kg) (ug/kg) (ug/kg) Dilution Batch Prepared Analyzed Notes

1,1,1,2-Tetrachloroethane ND 4.1 NA 1 B3C0501 03/27/2013 03/29/13 16:40 1,1,1-Trichloroethane ND 4.1 NA 1 B3C0501 03/27/2013 03/29/13 16:40 1,1,2,2-Tetrachloroethane ND 4.1 NA 1 B3C0501 03/27/2013 03/29/13 16:40 1,1,2-Trichloroethane ND 4.1 NA 1 B3C0501 03/27/2013 03/29/13 16:40 1,1-Dichloroethane ND 4.1 NA 1 B3C0501 03/27/2013 03/29/13 16:40 1,1-Dichloroethene ND 4.1 NA 1 B3C0501 03/27/2013 03/29/13 16:40 1,1-Dichloropropene ND 4.1 NA 1 B3C0501 03/27/2013 03/29/13 16:40 1,2,3-Trichloropropane ND 4.1 NA 1 B3C0501 03/27/2013 03/29/13 16:40 1,2,3-Trichlorobenzene ND 4.1 NA 1 B3C0501 03/27/2013 03/29/13 16:40 1,2,4-Trichlorobenzene ND 4.1 NA 1 B3C0501 03/27/2013 03/29/13 16:40 1,2,4-Trimethylbenzene ND 4.1 NA 1 B3C0501 03/27/2013 03/29/13 16:40 1,2-Dibromo-3-chloropropane ND 8.2 NA 1 B3C0501 03/27/2013 03/29/13 16:40 1,2-Dibromoethane ND 4.1 NA 1 B3C0501 03/27/2013 03/29/13 16:40 1,2-Dichlorobenzene ND 4.1 NA 1 B3C0501 03/27/2013 03/29/13 16:40 1,2-Dichloroethane ND 4.1 NA 1 B3C0501 03/27/2013 03/29/13 16:40 1,2-Dichloropropane ND 4.1 NA 1 B3C0501 03/27/2013 03/29/13 16:40 1,3,5-Trimethylbenzene ND 4.1 NA 1 B3C0501 03/27/2013 03/29/13 16:40 1,3-Dichlorobenzene ND 4.1 NA 1 B3C0501 03/27/2013 03/29/13 16:40 1,3-Dichloropropane ND 4.1 NA 1 B3C0501 03/27/2013 03/29/13 16:40 1,4-Dichlorobenzene ND 4.1 NA 1 B3C0501 03/27/2013 03/29/13 16:40 2,2-Dichloropropane ND 4.1 NA 1 B3C0501 03/27/2013 03/29/13 16:40 2-Chlorotoluene ND 4.1 NA 1 B3C0501 03/27/2013 03/29/13 16:40 4-Chlorotoluene ND 4.1 NA 1 B3C0501 03/27/2013 03/29/13 16:40 4-Isopropyltoluene ND 4.1 NA 1 B3C0501 03/27/2013 03/29/13 16:40 Benzene ND 4.1 NA 1 B3C0501 03/27/2013 03/29/13 16:40 Bromobenzene ND 4.1 NA 1 B3C0501 03/27/2013 03/29/13 16:40 Bromochloromethane ND 4.1 NA 1 B3C0501 03/27/2013 03/29/13 16:40 Bromodichloromethane ND 4.1 NA 1 B3C0501 03/27/2013 03/29/13 16:40 Bromoform ND 4.1 NA 1 B3C0501 03/27/2013 03/29/13 16:40 Bromomethane ND 4.1 NA 1 B3C0501 03/27/2013 03/29/13 16:40 Carbon disulfide ND 4.1 NA 1 B3C0501 03/27/2013 03/29/13 16:40 Carbon tetrachloride ND 4.1 NA 1 B3C0501 03/27/2013 03/29/13 16:40 Chlorobenzene ND 4.1 NA 1 B3C0501 03/27/2013 03/29/13 16:40 Chloroethane ND 4.1 NA 1 B3C0501 03/27/2013 03/29/13 16:40 Chloroform ND 4.1 NA 1 B3C0501 03/27/2013 03/29/13 16:40 Chloromethane ND 4.1 NA 1 B3C0501 03/27/2013 03/29/13 16:40 cis-1,2-Dichloroethene ND 4.1 NA 1 B3C0501 03/27/2013 03/29/13 16:40

3275 Walnut Avenue, Signal Hill, CA 90755 Tel: 562-989-4045 Fax: 562-989-4040 www.atlglobal.com Page 28 of 61 Certificate of Analysis

AMEC Project Number : Regional Connector, 4953-11-0471 6001 Rickenbacker Road Report To : Jay Neuhaus Los Angeles , CA 90040-3031 Reported : 04/08/2013

Client Sample ID E2-7-55' Lab ID: 1300952-11

Volatile Organic Compounds by EPA 5035/EPA 8260 Analyst: TP

Result PQL MDL Date/Time Analyte (ug/kg) (ug/kg) (ug/kg) Dilution Batch Prepared Analyzed Notes

cis-1,3-Dichloropropene ND 4.1 NA 1 B3C0501 03/27/2013 03/29/13 16:40 Di-isopropyl ether ND 4.1 NA 1 B3C0501 03/27/2013 03/29/13 16:40 Dibromochloromethane ND 4.1 NA 1 B3C0501 03/27/2013 03/29/13 16:40 Dibromomethane ND 4.1 NA 1 B3C0501 03/27/2013 03/29/13 16:40 Dichlorodifluoromethane ND 4.1 NA 1 B3C0501 03/27/2013 03/29/13 16:40 Ethyl Acetate ND 41 NA 1 B3C0501 03/27/2013 03/29/13 16:40 Ethyl Ether ND 41 NA 1 B3C0501 03/27/2013 03/29/13 16:40 Ethyl tert-butyl ether ND 4.1 NA 1 B3C0501 03/27/2013 03/29/13 16:40 Ethylbenzene ND 4.1 NA 1 B3C0501 03/27/2013 03/29/13 16:40 Freon-113 ND 4.1 NA 1 B3C0501 03/27/2013 03/29/13 16:40 Hexachlorobutadiene ND 4.1 NA 1 B3C0501 03/27/2013 03/29/13 16:40 Isopropylbenzene ND 4.1 NA 1 B3C0501 03/27/2013 03/29/13 16:40 m,p-Xylene ND 8.2 NA 1 B3C0501 03/27/2013 03/29/13 16:40 Methylene chloride ND 4.1 NA 1 B3C0501 03/27/2013 03/29/13 16:40 MTBE ND 4.1 NA 1 B3C0501 03/27/2013 03/29/13 16:40 n-Butylbenzene ND 4.1 NA 1 B3C0501 03/27/2013 03/29/13 16:40 n-Propylbenzene ND 4.1 NA 1 B3C0501 03/27/2013 03/29/13 16:40 Naphthalene ND 4.1 NA 1 B3C0501 03/27/2013 03/29/13 16:40 o-Xylene ND 4.1 NA 1 B3C0501 03/27/2013 03/29/13 16:40 sec-Butylbenzene ND 4.1 NA 1 B3C0501 03/27/2013 03/29/13 16:40 Styrene ND 4.1 NA 1 B3C0501 03/27/2013 03/29/13 16:40 tert-Amyl methyl ether ND 4.1 NA 1 B3C0501 03/27/2013 03/29/13 16:40 tert-Butanol ND 82 NA 1 B3C0501 03/27/2013 03/29/13 16:40 tert-Butylbenzene ND 4.1 NA 1 B3C0501 03/27/2013 03/29/13 16:40 Tetrachloroethene ND 4.1 NA 1 B3C0501 03/27/2013 03/29/13 16:40 Toluene ND 4.1 NA 1 B3C0501 03/27/2013 03/29/13 16:40 trans-1,2-Dichloroethene ND 4.1 NA 1 B3C0501 03/27/2013 03/29/13 16:40 trans-1,3-Dichloropropene ND 41 NA 1 B3C0501 03/27/2013 03/29/13 16:40 Trichloroethene ND 4.1 NA 1 B3C0501 03/27/2013 03/29/13 16:40 Trichlorofluoromethane ND 4.1 NA 1 B3C0501 03/27/2013 03/29/13 16:40 Vinyl acetate ND 41 NA 1 B3C0501 03/27/2013 03/29/13 16:40 Vinyl chloride ND 4.1 NA 1 B3C0501 03/27/2013 03/29/13 16:40 Surrogate: 1,2-Dichloroethane-d4 115 % 56 - 159 B3C0501 03/27/2013 03/29/13 16:40 Surrogate: 4-Bromofluorobenzene 102 % 69 - 131 B3C0501 03/27/2013 03/29/13 16:40 Surrogate: Dibromofluoromethane 114 % 60 - 127 B3C0501 03/27/2013 03/29/13 16:40 Surrogate: Toluene-d8 107 % 70 - 121 B3C0501 03/27/2013 03/29/13 16:40

3275 Walnut Avenue, Signal Hill, CA 90755 Tel: 562-989-4045 Fax: 562-989-4040 www.atlglobal.com Page 29 of 61 Certificate of Analysis

AMEC Project Number : Regional Connector, 4953-11-0471 6001 Rickenbacker Road Report To : Jay Neuhaus Los Angeles , CA 90040-3031 Reported : 04/08/2013

Client Sample ID E2-7-55' Lab ID: 1300952-11

Semivolatile Organic Compounds by EPA 8270C Analyst: BB

Result PQL MDL Date/Time Analyte (ug/kg) (ug/kg) (ug/kg) Dilution Batch Prepared Analyzed Notes

1,2,4-Trichlorobenzene ND 330 NA 1 B3C0503 03/29/2013 03/29/13 19:05 1,2-Dichlorobenzene ND 330 NA 1 B3C0503 03/29/2013 03/29/13 19:05 1,3-Dichlorobenzene ND 330 NA 1 B3C0503 03/29/2013 03/29/13 19:05 1,4-Dichlorobenzene ND 330 NA 1 B3C0503 03/29/2013 03/29/13 19:05 2,4,5-Trichlorophenol ND 330 NA 1 B3C0503 03/29/2013 03/29/13 19:05 2,4,6-Trichlorophenol ND 330 NA 1 B3C0503 03/29/2013 03/29/13 19:05 2,4-Dichlorophenol ND 1600 NA 1 B3C0503 03/29/2013 03/29/13 19:05 2,4-Dimethylphenol ND 330 NA 1 B3C0503 03/29/2013 03/29/13 19:05 2,4-Dinitrophenol ND 1600 NA 1 B3C0503 03/29/2013 03/29/13 19:05 2,4-Dinitrotoluene ND 330 NA 1 B3C0503 03/29/2013 03/29/13 19:05 2,6-Dinitrotoluene ND 330 NA 1 B3C0503 03/29/2013 03/29/13 19:05 2-Chloronaphthalene ND 330 NA 1 B3C0503 03/29/2013 03/29/13 19:05 2-Chlorophenol ND 330 NA 1 B3C0503 03/29/2013 03/29/13 19:05 2-Methylnaphthalene ND 330 NA 1 B3C0503 03/29/2013 03/29/13 19:05 2-Methylphenol ND 330 NA 1 B3C0503 03/29/2013 03/29/13 19:05 2-Nitroaniline ND 1600 NA 1 B3C0503 03/29/2013 03/29/13 19:05 2-Nitrophenol ND 330 NA 1 B3C0503 03/29/2013 03/29/13 19:05 3,3´-Dichlorobenzidine ND 660 NA 1 B3C0503 03/29/2013 03/29/13 19:05 3-Nitroaniline ND 1600 NA 1 B3C0503 03/29/2013 03/29/13 19:05 4,6-Dinitro-2-methyphenol ND 1600 NA 1 B3C0503 03/29/2013 03/29/13 19:05 4-Bromophenyl-phenylether ND 330 NA 1 B3C0503 03/29/2013 03/29/13 19:05 4-Chloro-3-methylphenol ND 660 NA 1 B3C0503 03/29/2013 03/29/13 19:05 4-Chloroaniline ND 660 NA 1 B3C0503 03/29/2013 03/29/13 19:05 4-Chlorophenyl-phenylether ND 330 NA 1 B3C0503 03/29/2013 03/29/13 19:05 4-Methylphenol ND 330 NA 1 B3C0503 03/29/2013 03/29/13 19:05 4-Nitroaniline ND 1600 NA 1 B3C0503 03/29/2013 03/29/13 19:05 4-Nitrophenol ND 330 NA 1 B3C0503 03/29/2013 03/29/13 19:05 Acenaphthene ND 330 NA 1 B3C0503 03/29/2013 03/29/13 19:05 Acenaphthylene ND 330 NA 1 B3C0503 03/29/2013 03/29/13 19:05 Anthracene ND 330 NA 1 B3C0503 03/29/2013 03/29/13 19:05 Benzidine (M) ND 1600 NA 1 B3C0503 03/29/2013 03/29/13 19:05 Benzo(a)anthracene ND 330 NA 1 B3C0503 03/29/2013 03/29/13 19:05 Benzo(a)pyrene ND 330 NA 1 B3C0503 03/29/2013 03/29/13 19:05 Benzo(b)fluoranthene ND 330 NA 1 B3C0503 03/29/2013 03/29/13 19:05 Benzo(g,h,i)perylene ND 330 NA 1 B3C0503 03/29/2013 03/29/13 19:05 Benzo(k)fluoranthene ND 330 NA 1 B3C0503 03/29/2013 03/29/13 19:05 Benzoic acid ND 1600 NA 1 B3C0503 03/29/2013 03/29/13 19:05

3275 Walnut Avenue, Signal Hill, CA 90755 Tel: 562-989-4045 Fax: 562-989-4040 www.atlglobal.com Page 30 of 61 Certificate of Analysis

AMEC Project Number : Regional Connector, 4953-11-0471 6001 Rickenbacker Road Report To : Jay Neuhaus Los Angeles , CA 90040-3031 Reported : 04/08/2013

Client Sample ID E2-7-55' Lab ID: 1300952-11

Semivolatile Organic Compounds by EPA 8270C Analyst: BB

Result PQL MDL Date/Time Analyte (ug/kg) (ug/kg) (ug/kg) Dilution Batch Prepared Analyzed Notes

Benzyl alcohol ND 660 NA 1 B3C0503 03/29/2013 03/29/13 19:05 bis(2-chloroethoxy)methane ND 330 NA 1 B3C0503 03/29/2013 03/29/13 19:05 bis(2-Chloroethyl)ether ND 330 NA 1 B3C0503 03/29/2013 03/29/13 19:05 bis(2-chloroisopropyl)ether ND 330 NA 1 B3C0503 03/29/2013 03/29/13 19:05 bis(2-ethylhexyl)phthalate ND 330 NA 1 B3C0503 03/29/2013 03/29/13 19:05 Butylbenzylphthalate ND 330 NA 1 B3C0503 03/29/2013 03/29/13 19:05 Chrysene ND 330 NA 1 B3C0503 03/29/2013 03/29/13 19:05 Di-n-butylphthalate ND 330 NA 1 B3C0503 03/29/2013 03/29/13 19:05 Di-n-octylphthalate ND 330 NA 1 B3C0503 03/29/2013 03/29/13 19:05 Dibenz(a,h)anthracene ND 330 NA 1 B3C0503 03/29/2013 03/29/13 19:05 Dibenzofuran ND 330 NA 1 B3C0503 03/29/2013 03/29/13 19:05 Diethyl phthalate ND 330 NA 1 B3C0503 03/29/2013 03/29/13 19:05 Dimethyl phthalate ND 330 NA 1 B3C0503 03/29/2013 03/29/13 19:05 Fluoranthene ND 330 NA 1 B3C0503 03/29/2013 03/29/13 19:05 Fluorene ND 330 NA 1 B3C0503 03/29/2013 03/29/13 19:05 Hexachlorobenzene ND 330 NA 1 B3C0503 03/29/2013 03/29/13 19:05 Hexachlorobutadiene ND 660 NA 1 B3C0503 03/29/2013 03/29/13 19:05 Hexachlorocyclopentadiene ND 660 NA 1 B3C0503 03/29/2013 03/29/13 19:05 Hexachloroethane ND 330 NA 1 B3C0503 03/29/2013 03/29/13 19:05 Indeno(1,2,3-cd)pyrene ND 330 NA 1 B3C0503 03/29/2013 03/29/13 19:05 Isophorone ND 330 NA 1 B3C0503 03/29/2013 03/29/13 19:05 N-Nitroso-di-n propylamine ND 330 NA 1 B3C0503 03/29/2013 03/29/13 19:05 N-Nitrosodiphenylamine ND 330 NA 1 B3C0503 03/29/2013 03/29/13 19:05 Naphthalene ND 330 NA 1 B3C0503 03/29/2013 03/29/13 19:05 Nitrobenzene ND 330 NA 1 B3C0503 03/29/2013 03/29/13 19:05 Pentachlorophenol ND 1600 NA 1 B3C0503 03/29/2013 03/29/13 19:05 Phenanthrene ND 330 NA 1 B3C0503 03/29/2013 03/29/13 19:05 Phenol ND 330 NA 1 B3C0503 03/29/2013 03/29/13 19:05 Pyrene ND 330 NA 1 B3C0503 03/29/2013 03/29/13 19:05 Pyridine ND 1600 NA 1 B3C0503 03/29/2013 03/29/13 19:05 Surrogate: 1,2-Dichlorobenzene-d4 87.1 % 48 - 113 B3C0503 03/29/2013 03/29/13 19:05 Surrogate: 2,4,6-Tribromophenol 78.0 % 14 - 162 B3C0503 03/29/2013 03/29/13 19:05 Surrogate: 2-Chlorophenol-d4 96.4 % 40 - 117 B3C0503 03/29/2013 03/29/13 19:05 Surrogate: 2-Fluorobiphenyl 96.5 % 52 - 126 B3C0503 03/29/2013 03/29/13 19:05 Surrogate: 2-Fluorophenol 101 % 26 - 124 B3C0503 03/29/2013 03/29/13 19:05 Surrogate: 4-Terphenyl-d14 109 % 36 - 163 B3C0503 03/29/2013 03/29/13 19:05 Surrogate: Nitrobenzene-d5 100 % 42 - 118 B3C0503 03/29/2013 03/29/13 19:05

3275 Walnut Avenue, Signal Hill, CA 90755 Tel: 562-989-4045 Fax: 562-989-4040 www.atlglobal.com Page 31 of 61 Certificate of Analysis

AMEC Project Number : Regional Connector, 4953-11-0471 6001 Rickenbacker Road Report To : Jay Neuhaus Los Angeles , CA 90040-3031 Reported : 04/08/2013

Client Sample ID E2-7-55' Lab ID: 1300952-11

Semivolatile Organic Compounds by EPA 8270C Analyst: BB

Result PQL MDL Date/Time Analyte (ug/kg) (ug/kg) (ug/kg) Dilution Batch Prepared Analyzed Notes

Surrogate: Phenol-d5 96.9 % 29 - 124 B3C0503 03/29/2013 03/29/13 19:05

3275 Walnut Avenue, Signal Hill, CA 90755 Tel: 562-989-4045 Fax: 562-989-4040 www.atlglobal.com Page 32 of 61 Certificate of Analysis

AMEC Project Number : Regional Connector, 4953-11-0471 6001 Rickenbacker Road Report To : Jay Neuhaus Los Angeles , CA 90040-3031 Reported : 04/08/2013

Client Sample ID E2-7-GW Lab ID: 1300952-16

Gasoline Range Organics by EPA 8015B Analyst: LT

Result PQL MDL Date/Time Analyte (mg/L) (mg/L) (mg/L) Dilution Batch Prepared Analyzed Notes

Gasoline Range Organics ND 0.20 NA 1 B3D0003 04/01/2013 04/01/13 12:24 Surrogate: 4-Bromofluorobenzene 97.3 % 70 - 130 B3D0003 04/01/2013 04/01/13 12:24

Diesel Range Organics by EPA 8015B Analyst: CR

Result PQL MDL Date/Time Analyte (mg/L) (mg/L) (mg/L) Dilution Batch Prepared Analyzed Notes

DRO ND 1.0 NA 1 B3D0005 04/01/2013 04/01/13 14:15 ORO ND 1.0 NA 1 B3D0005 04/01/2013 04/01/13 14:15 Surrogate: p-Terphenyl 64.4 % 48 - 124 B3D0005 04/01/2013 04/01/13 14:15

Volatile Organic Compounds by EPA 8260 Analyst: SL

Result PQL MDL Date/Time Analyte (ug/L) (ug/L) (ug/L) Dilution Batch Prepared Analyzed Notes

1,1,1,2-Tetrachloroethane ND 0.50 NA 1 B3D0081 04/04/2013 04/04/13 19:04 1,1,1-Trichloroethane ND 0.50 NA 1 B3D0081 04/04/2013 04/04/13 19:04 1,1,2,2-Tetrachloroethane ND 0.50 NA 1 B3D0081 04/04/2013 04/04/13 19:04 1,1,2-Trichloroethane ND 0.50 NA 1 B3D0081 04/04/2013 04/04/13 19:04 1,1-Dichloroethane ND 0.50 NA 1 B3D0081 04/04/2013 04/04/13 19:04 1,1-Dichloroethene ND 0.50 NA 1 B3D0081 04/04/2013 04/04/13 19:04 1,1-Dichloropropene ND 0.50 NA 1 B3D0081 04/04/2013 04/04/13 19:04 1,2,3-Trichloropropane ND 0.50 NA 1 B3D0081 04/04/2013 04/04/13 19:04 1,2,3-Trichlorobenzene ND 0.50 NA 1 B3D0081 04/04/2013 04/04/13 19:04 1,2,4-Trichlorobenzene ND 0.50 NA 1 B3D0081 04/04/2013 04/04/13 19:04 1,2,4-Trimethylbenzene ND 0.50 NA 1 B3D0081 04/04/2013 04/04/13 19:04 1,2-Dibromo-3-chloropropane ND 0.50 NA 1 B3D0081 04/04/2013 04/04/13 19:04 1,2-Dibromoethane ND 0.50 NA 1 B3D0081 04/04/2013 04/04/13 19:04 1,2-Dichlorobenzene ND 0.50 NA 1 B3D0081 04/04/2013 04/04/13 19:04 1,2-Dichloroethane ND 0.50 NA 1 B3D0081 04/04/2013 04/04/13 19:04 1,2-Dichloropropane ND 0.50 NA 1 B3D0081 04/04/2013 04/04/13 19:04 1,3,5-Trimethylbenzene ND 0.50 NA 1 B3D0081 04/04/2013 04/04/13 19:04 1,3-Dichlorobenzene ND 0.50 NA 1 B3D0081 04/04/2013 04/04/13 19:04 1,3-Dichloropropane ND 0.50 NA 1 B3D0081 04/04/2013 04/04/13 19:04 1,4-Dichlorobenzene ND 0.50 NA 1 B3D0081 04/04/2013 04/04/13 19:04 2,2-Dichloropropane ND 0.50 NA 1 B3D0081 04/04/2013 04/04/13 19:04 2-Chloroethyl vinyl ether ND 0.50 NA 1 B3D0081 04/04/2013 04/04/13 19:04

3275 Walnut Avenue, Signal Hill, CA 90755 Tel: 562-989-4045 Fax: 562-989-4040 www.atlglobal.com Page 33 of 61 Certificate of Analysis

AMEC Project Number : Regional Connector, 4953-11-0471 6001 Rickenbacker Road Report To : Jay Neuhaus Los Angeles , CA 90040-3031 Reported : 04/08/2013

Client Sample ID E2-7-GW Lab ID: 1300952-16

Volatile Organic Compounds by EPA 8260 Analyst: SL

Result PQL MDL Date/Time Analyte (ug/L) (ug/L) (ug/L) Dilution Batch Prepared Analyzed Notes

2-Chlorotoluene ND 0.50 NA 1 B3D0081 04/04/2013 04/04/13 19:04 4-Chlorotoluene ND 0.50 NA 1 B3D0081 04/04/2013 04/04/13 19:04 4-Isopropyltoluene ND 0.50 NA 1 B3D0081 04/04/2013 04/04/13 19:04 Benzene 0.78 0.50 NA 1 B3D0081 04/04/2013 04/04/13 19:04 Bromobenzene ND 0.50 NA 1 B3D0081 04/04/2013 04/04/13 19:04 Bromodichloromethane ND 0.50 NA 1 B3D0081 04/04/2013 04/04/13 19:04 Bromoform ND 0.50 NA 1 B3D0081 04/04/2013 04/04/13 19:04 Bromomethane ND 0.50 NA 1 B3D0081 04/04/2013 04/04/13 19:04 Carbon tetrachloride ND 0.50 NA 1 B3D0081 04/04/2013 04/04/13 19:04 Chlorobenzene ND 0.50 NA 1 B3D0081 04/04/2013 04/04/13 19:04 Chloroethane ND 0.50 NA 1 B3D0081 04/04/2013 04/04/13 19:04 Chloroform ND 0.50 NA 1 B3D0081 04/04/2013 04/04/13 19:04 Chloromethane ND 0.50 NA 1 B3D0081 04/04/2013 04/04/13 19:04 cis-1,2-Dichloroethene ND 0.50 NA 1 B3D0081 04/04/2013 04/04/13 19:04 cis-1,3-Dichloropropene ND 0.50 NA 1 B3D0081 04/04/2013 04/04/13 19:04 Di-isopropyl ether ND 0.50 NA 1 B3D0081 04/04/2013 04/04/13 19:04 Dibromochloromethane ND 0.50 NA 1 B3D0081 04/04/2013 04/04/13 19:04 Dibromomethane ND 0.50 NA 1 B3D0081 04/04/2013 04/04/13 19:04 Dichlorodifluoromethane ND 0.50 NA 1 B3D0081 04/04/2013 04/04/13 19:04 Ethyl tert-butyl ether ND 0.50 NA 1 B3D0081 04/04/2013 04/04/13 19:04 Ethylbenzene ND 0.50 NA 1 B3D0081 04/04/2013 04/04/13 19:04 Hexachlorobutadiene ND 0.50 NA 1 B3D0081 04/04/2013 04/04/13 19:04 Isopropylbenzene ND 0.50 NA 1 B3D0081 04/04/2013 04/04/13 19:04 m,p-Xylene ND 1.0 NA 1 B3D0081 04/04/2013 04/04/13 19:04 Methylene chloride ND 1.0 NA 1 B3D0081 04/04/2013 04/04/13 19:04 MTBE ND 0.50 NA 1 B3D0081 04/04/2013 04/04/13 19:04 n-Butylbenzene ND 0.50 NA 1 B3D0081 04/04/2013 04/04/13 19:04 n-Propylbenzene ND 0.50 NA 1 B3D0081 04/04/2013 04/04/13 19:04 Naphthalene ND 0.50 NA 1 B3D0081 04/04/2013 04/04/13 19:04 o-Xylene ND 0.50 NA 1 B3D0081 04/04/2013 04/04/13 19:04 sec-Butylbenzene ND 0.50 NA 1 B3D0081 04/04/2013 04/04/13 19:04 Styrene ND 0.50 NA 1 B3D0081 04/04/2013 04/04/13 19:04 tert-Amyl methyl ether ND 0.50 NA 1 B3D0081 04/04/2013 04/04/13 19:04 tert-Butanol ND 10 NA 1 B3D0081 04/04/2013 04/04/13 19:04 tert-Butylbenzene ND 0.50 NA 1 B3D0081 04/04/2013 04/04/13 19:04 Tetrachloroethene ND 0.50 NA 1 B3D0081 04/04/2013 04/04/13 19:04 Toluene 38 0.50 NA 1 B3D0081 04/04/2013 04/04/13 19:04

3275 Walnut Avenue, Signal Hill, CA 90755 Tel: 562-989-4045 Fax: 562-989-4040 www.atlglobal.com Page 34 of 61 Certificate of Analysis

AMEC Project Number : Regional Connector, 4953-11-0471 6001 Rickenbacker Road Report To : Jay Neuhaus Los Angeles , CA 90040-3031 Reported : 04/08/2013

Client Sample ID E2-7-GW Lab ID: 1300952-16

Volatile Organic Compounds by EPA 8260 Analyst: SL

Result PQL MDL Date/Time Analyte (ug/L) (ug/L) (ug/L) Dilution Batch Prepared Analyzed Notes

trans-1,2-Dichloroethene ND 0.50 NA 1 B3D0081 04/04/2013 04/04/13 19:04 Trichloroethene ND 0.50 NA 1 B3D0081 04/04/2013 04/04/13 19:04 Trichlorofluoromethane ND 0.50 NA 1 B3D0081 04/04/2013 04/04/13 19:04 Vinyl chloride ND 0.50 NA 1 B3D0081 04/04/2013 04/04/13 19:04 Surrogate: 1,2-Dichloroethane-d4 118 % 70 - 130 B3D0081 04/04/2013 04/04/13 19:04 Surrogate: 4-Bromofluorobenzene 98.8 % 70 - 130 B3D0081 04/04/2013 04/04/13 19:04 Surrogate: Dibromofluoromethane 111 % 70 - 130 B3D0081 04/04/2013 04/04/13 19:04 Surrogate: Toluene-d8 79.8 % 70 - 130 B3D0081 04/04/2013 04/04/13 19:04

3275 Walnut Avenue, Signal Hill, CA 90755 Tel: 562-989-4045 Fax: 562-989-4040 www.atlglobal.com Page 35 of 61 Certificate of Analysis

AMEC Project Number : Regional Connector, 4953-11-0471 6001 Rickenbacker Road Report To : Jay Neuhaus Los Angeles , CA 90040-3031 Reported : 04/08/2013

QUALITY CONTROL SECTION

Title 22 Metals by ICP-AES EPA 6010B - Quality Control

Result PQL Spike Source % Rec RPD Analyte (mg/kg) (mg/kg) Level Result % Rec Limits RPD Limit Notes

Batch B3C0494 - EPA 3050B

Blank (B3C0494-BLK1) Prepared: 3/29/2013 Analyzed: 4/1/2013 Antimony ND 2.0 NR Arsenic ND 1.0 NR Barium ND 1.0 NR Beryllium ND 1.0 NR Cadmium ND 1.0 NR Chromium ND 1.0 NR Cobalt ND 1.0 NR Copper ND 2.0 NR Lead ND 1.0 NR Molybdenum ND 1.0 NR Nickel ND 1.0 NR Selenium ND 1.0 NR Silver ND 1.0 NR Thallium ND 1.0 NR Vanadium ND 1.0 NR Zinc ND 1.0 NR

LCS (B3C0494-BS1) Prepared: 3/29/2013 Analyzed: 4/1/2013 Antimony 50.5561 2.0 50.0000 101 80 - 120 Arsenic 47.5258 1.0 50.0000 95.1 80 - 120 Barium 50.3132 1.0 50.0000 101 80 - 120 Beryllium 49.6426 1.0 50.0000 99.3 80 - 120 Cadmium 48.3552 1.0 50.0000 96.7 80 - 120 Chromium 51.2496 1.0 50.0000 102 80 - 120 Cobalt 50.0622 1.0 50.0000 100 80 - 120 Copper 50.3459 2.0 50.0000 101 80 - 120 Lead 47.3072 1.0 50.0000 94.6 80 - 120 Molybdenum 48.8320 1.0 50.0000 97.7 80 - 120 Nickel 48.7846 1.0 50.0000 97.6 80 - 120 Selenium 44.1192 1.0 50.0000 88.2 80 - 120 Silver 50.6718 1.0 50.0000 101 80 - 120 Thallium 52.0942 1.0 50.0000 104 80 - 120 Vanadium 53.1796 1.0 50.0000 106 80 - 120 Zinc 49.7764 1.0 50.0000 99.6 80 - 120

Duplicate (B3C0494-DUP1) Source: 1300952-02 Prepared: 3/29/2013 Analyzed: 4/1/2013 Antimony ND 2.0 ND NR 20 Arsenic 0.984731 1.0 1.17895 NR 18.0 20 Barium 86.6593 1.0 101.928 NR 16.2 20 Beryllium ND 1.0 ND NR 20

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AMEC Project Number : Regional Connector, 4953-11-0471 6001 Rickenbacker Road Report To : Jay Neuhaus Los Angeles , CA 90040-3031 Reported : 04/08/2013

Title 22 Metals by ICP-AES EPA 6010B - Quality Control (cont'd)

Result PQL Spike Source % Rec RPD Analyte (mg/kg) (mg/kg) Level Result % Rec Limits RPD Limit Notes

Batch B3C0494 - EPA 3050B (continued)

Duplicate (B3C0494-DUP1) - Continued Source: 1300952-02 Prepared: 3/29/2013 Analyzed: 4/1/2013 Cadmium 0.280567 1.0 0.321849 NR 13.7 20 Chromium 9.67874 1.0 10.9762 NR 12.6 20 Cobalt 4.99470 1.0 5.15119 NR 3.08 20 Copper 15.3779 2.0 16.4627 NR 6.81 20 Lead 30.2701 1.0 39.1559 NR 25.6 20 R Molybdenum 0.171222 1.0 0.288930 NR 51.2 20 R Nickel 5.71030 1.0 6.09993 NR 6.60 20 Selenium ND 1.0 ND NR 20 Silver ND 1.0 ND NR 20 Thallium ND 1.0 ND NR 20 Vanadium 17.3414 1.0 18.3710 NR 5.77 20 Zinc 67.1679 1.0 80.3715 NR 17.9 20

Matrix Spike (B3C0494-MS1) Source: 1300952-02 Prepared: 3/29/2013 Analyzed: 4/1/2013 Antimony 87.2966 2.0 124.378 ND 70.2 34 - 102 Arsenic 104.280 1.0 124.378 1.17895 82.9 56 - 101 Barium 202.261 1.0 124.378 101.928 80.7 31 - 136 Beryllium 104.057 1.0 124.378 ND 83.7 60 - 103 Cadmium 96.8429 1.0 124.378 0.321849 77.6 53 - 100 Chromium 117.042 1.0 124.378 10.9762 85.3 52 - 113 Cobalt 105.325 1.0 124.378 5.15119 80.5 53 - 103 Copper 127.046 2.0 124.378 16.4627 88.9 56 - 121 Lead 127.363 1.0 124.378 39.1559 70.9 45 - 111 Molybdenum 101.319 1.0 124.378 0.288930 81.2 56 - 102 Nickel 106.034 1.0 124.378 6.09993 80.3 46 - 111 Selenium 100.458 1.0 124.378 ND 80.8 48 - 103 Silver 111.022 1.0 124.378 ND 89.3 56 - 113 Thallium 90.3950 1.0 124.378 ND 72.7 48 - 103 Vanadium 127.764 1.0 124.378 18.3710 88.0 52 - 119 Zinc 165.044 1.0 124.378 80.3715 68.1 30 - 124

Matrix Spike Dup (B3C0494-MSD1) Source: 1300952-02 Prepared: 3/29/2013 Analyzed: 4/1/2013 Antimony 80.7860 2.0 125.000 ND 64.6 34 - 102 7.75 20 Arsenic 99.2028 1.0 125.000 1.17895 78.4 56 - 101 4.99 20 Barium 195.798 1.0 125.000 101.928 75.1 31 - 136 3.25 20 Beryllium 99.0811 1.0 125.000 ND 79.3 60 - 103 4.90 20 Cadmium 91.9240 1.0 125.000 0.321849 73.3 53 - 100 5.21 20 Chromium 109.528 1.0 125.000 10.9762 78.8 52 - 113 6.63 20 Cobalt 100.454 1.0 125.000 5.15119 76.2 53 - 103 4.73 20 Copper 121.980 2.0 125.000 16.4627 84.4 56 - 121 4.07 20 Lead 121.554 1.0 125.000 39.1559 65.9 45 - 111 4.67 20 Molybdenum 95.0505 1.0 125.000 0.288930 75.8 56 - 102 6.38 20

3275 Walnut Avenue, Signal Hill, CA 90755 Tel: 562-989-4045 Fax: 562-989-4040 www.atlglobal.com Page 37 of 61 Certificate of Analysis

AMEC Project Number : Regional Connector, 4953-11-0471 6001 Rickenbacker Road Report To : Jay Neuhaus Los Angeles , CA 90040-3031 Reported : 04/08/2013

Title 22 Metals by ICP-AES EPA 6010B - Quality Control (cont'd)

Result PQL Spike Source % Rec RPD Analyte (mg/kg) (mg/kg) Level Result % Rec Limits RPD Limit Notes

Batch B3C0494 - EPA 3050B (continued)

Matrix Spike Dup (B3C0494-MSD1) - Continued Source: 1300952-02 Prepared: 3/29/2013 Analyzed: 4/1/2013 Nickel 100.349 1.0 125.000 6.09993 75.4 46 - 111 5.51 20 Selenium 95.0542 1.0 125.000 ND 76.0 48 - 103 5.53 20 Silver 104.774 1.0 125.000 ND 83.8 56 - 113 5.79 20 Thallium 84.4914 1.0 125.000 ND 67.6 48 - 103 6.75 20 Vanadium 121.014 1.0 125.000 18.3710 82.1 52 - 119 5.43 20 Zinc 166.052 1.0 125.000 80.3715 68.5 30 - 124 0.609 20

3275 Walnut Avenue, Signal Hill, CA 90755 Tel: 562-989-4045 Fax: 562-989-4040 www.atlglobal.com Page 38 of 61 Certificate of Analysis

AMEC Project Number : Regional Connector, 4953-11-0471 6001 Rickenbacker Road Report To : Jay Neuhaus Los Angeles , CA 90040-3031 Reported : 04/08/2013

Mercury by AA (Cold Vapor) EPA 7471 - Quality Control

Result PQL Spike Source % Rec RPD Analyte (mg/kg) (mg/kg) Level Result % Rec Limits RPD Limit Notes

Batch B3D0058 - EPA 7471

Blank (B3D0058-BLK1) Prepared: 4/3/2013 Analyzed: 4/3/2013 Mercury ND 0.10 NR

LCS (B3D0058-BS1) Prepared: 4/3/2013 Analyzed: 4/3/2013 Mercury 0.823090 0.10 0.833333 98.8 80 - 120

Duplicate (B3D0058-DUP1) Source: 1300952-02 Prepared: 4/3/2013 Analyzed: 4/3/2013 Mercury 0.313239 0.10 0.306502 NR 2.17 20

Matrix Spike (B3D0058-MS1) Source: 1300952-02 Prepared: 4/3/2013 Analyzed: 4/3/2013 Mercury 1.17884 0.10 0.833333 0.306502 105 70 - 130

Matrix Spike Dup (B3D0058-MSD1) Source: 1300952-02 Prepared: 4/3/2013 Analyzed: 4/3/2013 Mercury 1.28820 0.10 0.833333 0.306502 118 70 - 130 8.87 20

Post Spike (B3D0058-PS1) Source: 1300952-02 Prepared: 4/3/2013 Analyzed: 4/3/2013 Mercury 0.008953 5.00000E-3 0.003678 105 70 - 130

3275 Walnut Avenue, Signal Hill, CA 90755 Tel: 562-989-4045 Fax: 562-989-4040 www.atlglobal.com Page 39 of 61 Certificate of Analysis

AMEC Project Number : Regional Connector, 4953-11-0471 6001 Rickenbacker Road Report To : Jay Neuhaus Los Angeles , CA 90040-3031 Reported : 04/08/2013

Gasoline Range Organics by EPA 8015B - Quality Control

Result PQL Spike Source % Rec RPD Analyte (mg/L) (mg/L) Level Result % Rec Limits RPD Limit Notes

Batch B3D0003 - GCVOAW

Blank (B3D0003-BLK1) Prepared: 4/1/2013 Analyzed: 4/1/2013 Gasoline Range Organics ND 0.20 NR Surrogate: 4-Bromofluorobenzene 0.09947 0.100000 99.5 70 - 130

LCS (B3D0003-BS1) Prepared: 4/1/2013 Analyzed: 4/1/2013 Gasoline Range Organics 1.03600 0.20 1.00000 104 70 - 130 Surrogate: 4-Bromofluorobenzene 0.1118 0.100000 112 70 - 130

LCS Dup (B3D0003-BSD1) Prepared: 4/1/2013 Analyzed: 4/1/2013 Gasoline Range Organics 1.00500 0.20 1.00000 100 70 - 130 3.04 20 Surrogate: 4-Bromofluorobenzene 0.1113 0.100000 111 70 - 130

3275 Walnut Avenue, Signal Hill, CA 90755 Tel: 562-989-4045 Fax: 562-989-4040 www.atlglobal.com Page 40 of 61 Certificate of Analysis

AMEC Project Number : Regional Connector, 4953-11-0471 6001 Rickenbacker Road Report To : Jay Neuhaus Los Angeles , CA 90040-3031 Reported : 04/08/2013

Gasoline Range Organics by EPA 8015B (5035) - Quality Control

Result PQL Spike Source % Rec RPD Analyte (mg/kg) (mg/kg) Level Result % Rec Limits RPD Limit Notes

Batch B3C0499 - GCVOAS

Blank (B3C0499-BLK1) Prepared: 3/29/2013 Analyzed: 3/29/2013 Gasoline Range Organics ND 1.0 NR Surrogate: 4-Bromofluorobenzene 0.08693 0.100000 86.9 59 - 160

LCS (B3C0499-BS1) Prepared: 3/29/2013 Analyzed: 3/29/2013 Gasoline Range Organics 5.44000 5.00000 109 70 - 130 Surrogate: 4-Bromofluorobenzene 0.1044 0.100000 104 59 - 160

LCS Dup (B3C0499-BSD1) Prepared: 3/29/2013 Analyzed: 3/29/2013 Gasoline Range Organics 5.50200 5.00000 110 70 - 130 1.13 20 Surrogate: 4-Bromofluorobenzene 0.1048 0.100000 105 59 - 160

Batch B3D0004 - GCVOAS

Blank (B3D0004-BLK1) Prepared: 4/1/2013 Analyzed: 4/1/2013 Gasoline Range Organics ND 1.0 NR Surrogate: 4-Bromofluorobenzene 0.08430 0.100000 84.3 59 - 160

LCS (B3D0004-BS1) Prepared: 4/1/2013 Analyzed: 4/1/2013 Gasoline Range Organics 5.08300 5.00000 102 70 - 130 Surrogate: 4-Bromofluorobenzene 0.1034 0.100000 103 59 - 160

LCS Dup (B3D0004-BSD1) Prepared: 4/1/2013 Analyzed: 4/1/2013 Gasoline Range Organics 5.34000 5.00000 107 70 - 130 4.93 20 Surrogate: 4-Bromofluorobenzene 0.1020 0.100000 102 59 - 160

Matrix Spike (B3D0004-MS1) Source: 1300961-01 Prepared: 4/1/2013 Analyzed: 4/1/2013 Gasoline Range Organics 4.54700 5.00000 0.225000 86.4 40 - 124 Surrogate: 4-Bromofluorobenzene 0.09844 0.100000 98.4 59 - 160

Matrix Spike Dup (B3D0004-MSD1) Source: 1300961-01 Prepared: 4/1/2013 Analyzed: 4/1/2013 Gasoline Range Organics 4.76500 5.00000 0.225000 90.8 40 - 124 4.68 20 Surrogate: 4-Bromofluorobenzene 0.1004 0.100000 100 59 - 160

3275 Walnut Avenue, Signal Hill, CA 90755 Tel: 562-989-4045 Fax: 562-989-4040 www.atlglobal.com Page 41 of 61 Certificate of Analysis

AMEC Project Number : Regional Connector, 4953-11-0471 6001 Rickenbacker Road Report To : Jay Neuhaus Los Angeles , CA 90040-3031 Reported : 04/08/2013

Diesel Range Organics by EPA 8015B - Quality Control

Result PQL Spike Source % Rec RPD Analyte (mg/kg) (mg/kg) Level Result % Rec Limits RPD Limit Notes

Batch B3C0492 - GCSEMI_DRO

Blank (B3C0492-BLK1) Prepared: 3/29/2013 Analyzed: 3/29/2013 DRO ND 10 NR ORO ND 10 NR Surrogate: p-Terphenyl 81.94 80.0000 102 62 - 136

LCS (B3C0492-BS1) Prepared: 3/29/2013 Analyzed: 3/29/2013 DRO 923.670 10 1000.00 92.4 72 - 131 Surrogate: p-Terphenyl 77.62 80.0000 97.0 62 - 136

Matrix Spike (B3C0492-MS1) Source: 1300952-04 Prepared: 3/29/2013 Analyzed: 3/29/2013 DRO 761.810 10 1000.00 ND 76.2 64 - 131 Surrogate: p-Terphenyl 80.87 80.0000 101 62 - 136

Matrix Spike Dup (B3C0492-MSD1) Source: 1300952-04 Prepared: 3/29/2013 Analyzed: 3/29/2013 DRO 912.560 10 1000.00 ND 91.3 64 - 131 18.0 20 Surrogate: p-Terphenyl 76.35 80.0000 95.4 62 - 136

3275 Walnut Avenue, Signal Hill, CA 90755 Tel: 562-989-4045 Fax: 562-989-4040 www.atlglobal.com Page 42 of 61 Certificate of Analysis

AMEC Project Number : Regional Connector, 4953-11-0471 6001 Rickenbacker Road Report To : Jay Neuhaus Los Angeles , CA 90040-3031 Reported : 04/08/2013

Diesel Range Organics by EPA 8015B - Quality Control (cont'd)

Result PQL Spike Source % Rec RPD Analyte (mg/kg) (mg/kg) Level Result % Rec Limits RPD Limit Notes

Batch B3D0005 - GCSEMI_DRO

Blank (B3D0005-BLK1) Prepared: 4/1/2013 Analyzed: 4/1/2013 DRO ND 0.20 NR ORO ND 0.20 NR Surrogate: p-Terphenyl 0.04218 8.00000E-2 52.7 48 - 124

3275 Walnut Avenue, Signal Hill, CA 90755 Tel: 562-989-4045 Fax: 562-989-4040 www.atlglobal.com Page 43 of 61 Certificate of Analysis

AMEC Project Number : Regional Connector, 4953-11-0471 6001 Rickenbacker Road Report To : Jay Neuhaus Los Angeles , CA 90040-3031 Reported : 04/08/2013

Diesel Range Organics by EPA 8015B - Quality Control (cont'd)

Result PQL Spike Source % Rec RPD Analyte (mg/L) (mg/L) Level Result % Rec Limits RPD Limit Notes

Batch B3D0005 - GCSEMI_DRO (continued)

LCS (B3D0005-BS1) Prepared: 4/1/2013 Analyzed: 4/1/2013 DRO 0.658580 0.20 1.00000 65.9 45 - 109 Surrogate: p-Terphenyl 0.03907 8.00000E-2 48.8 48 - 124

3275 Walnut Avenue, Signal Hill, CA 90755 Tel: 562-989-4045 Fax: 562-989-4040 www.atlglobal.com Page 44 of 61 Certificate of Analysis

AMEC Project Number : Regional Connector, 4953-11-0471 6001 Rickenbacker Road Report To : Jay Neuhaus Los Angeles , CA 90040-3031 Reported : 04/08/2013

Diesel Range Organics by EPA 8015B - Quality Control (cont'd)

Result PQL Spike Source % Rec RPD Analyte (mg/L) (mg/L) Level Result % Rec Limits RPD Limit Notes

Batch B3D0005 - GCSEMI_DRO (continued)

LCS Dup (B3D0005-BSD1) Prepared: 4/1/2013 Analyzed: 4/1/2013 DRO 0.697090 0.20 1.00000 69.7 45 - 109 5.68 20 Surrogate: p-Terphenyl 0.04065 8.00000E-2 50.8 48 - 124

3275 Walnut Avenue, Signal Hill, CA 90755 Tel: 562-989-4045 Fax: 562-989-4040 www.atlglobal.com Page 45 of 61 Certificate of Analysis

AMEC Project Number : Regional Connector, 4953-11-0471 6001 Rickenbacker Road Report To : Jay Neuhaus Los Angeles , CA 90040-3031 Reported : 04/08/2013

Volatile Organic Compounds by EPA 8260 - Quality Control

Result PQL Spike Source % Rec RPD Analyte (ug/L) (ug/L) Level Result % Rec Limits RPD Limit Notes

Batch B3D0081 - MSVOAW_LL

Blank (B3D0081-BLK1) Prepared: 4/4/2013 Analyzed: 4/4/2013 1,1,1,2-Tetrachloroethane ND 0.50 NR 1,1,1-Trichloroethane ND 0.50 NR 1,1,2,2-Tetrachloroethane ND 0.50 NR 1,1,2-Trichloroethane ND 0.50 NR 1,1-Dichloroethane ND 0.50 NR 1,1-Dichloroethene ND 0.50 NR 1,1-Dichloropropene ND 0.50 NR 1,2,3-Trichloropropane ND 0.50 NR 1,2,3-Trichlorobenzene ND 0.50 NR 1,2,4-Trichlorobenzene ND 0.50 NR 1,2,4-Trimethylbenzene ND 0.50 NR 1,2-Dibromo-3-chloropropane ND 0.50 NR 1,2-Dibromoethane ND 0.50 NR 1,2-Dichlorobenzene ND 0.50 NR 1,2-Dichloroethane ND 0.50 NR 1,2-Dichloropropane ND 0.50 NR 1,3,5-Trimethylbenzene ND 0.50 NR 1,3-Dichlorobenzene ND 0.50 NR 1,3-Dichloropropane ND 0.50 NR 1,4-Dichlorobenzene ND 0.50 NR 2,2-Dichloropropane ND 0.50 NR 2-Chloroethyl vinyl ether ND 0.50 NR 2-Chlorotoluene ND 0.50 NR 4-Chlorotoluene ND 0.50 NR 4-Isopropyltoluene ND 0.50 NR Benzene ND 0.50 NR Bromobenzene ND 0.50 NR Bromodichloromethane ND 0.50 NR Bromoform ND 0.50 NR Bromomethane ND 0.50 NR Carbon tetrachloride ND 0.50 NR Chlorobenzene ND 0.50 NR Chloroethane ND 0.50 NR Chloroform ND 0.50 NR Chloromethane ND 0.50 NR cis-1,2-Dichloroethene ND 0.50 NR cis-1,3-Dichloropropene ND 0.50 NR Di-isopropyl ether ND 0.50 NR Dibromochloromethane ND 0.50 NR Dibromomethane ND 0.50 NR Dichlorodifluoromethane ND 0.50 NR

3275 Walnut Avenue, Signal Hill, CA 90755 Tel: 562-989-4045 Fax: 562-989-4040 www.atlglobal.com Page 46 of 61 Certificate of Analysis

AMEC Project Number : Regional Connector, 4953-11-0471 6001 Rickenbacker Road Report To : Jay Neuhaus Los Angeles , CA 90040-3031 Reported : 04/08/2013

Volatile Organic Compounds by EPA 8260 - Quality Control (cont'd)

Result PQL Spike Source % Rec RPD Analyte (ug/L) (ug/L) Level Result % Rec Limits RPD Limit Notes

Batch B3D0081 - MSVOAW_LL (continued)

Blank (B3D0081-BLK1) - Continued Prepared: 4/4/2013 Analyzed: 4/4/2013 Ethyl tert-butyl ether ND 0.50 NR Ethylbenzene ND 0.50 NR Hexachlorobutadiene ND 0.50 NR Isopropylbenzene ND 0.50 NR m,p-Xylene ND 1.0 NR Methylene chloride ND 1.0 NR MTBE ND 0.50 NR n-Butylbenzene ND 0.50 NR n-Propylbenzene ND 0.50 NR Naphthalene ND 0.50 NR o-Xylene ND 0.50 NR sec-Butylbenzene ND 0.50 NR Styrene ND 0.50 NR tert-Amyl methyl ether ND 0.50 NR tert-Butanol ND 10 NR tert-Butylbenzene ND 0.50 NR Tetrachloroethene ND 0.50 NR Toluene ND 0.50 NR trans-1,2-Dichloroethene ND 0.50 NR Trichloroethene ND 0.50 NR Trichlorofluoromethane ND 0.50 NR Vinyl chloride ND 0.50 NR Surrogate: 1,2-Dichloroethane-d4 27.80 25.0000 111 70 - 130 Surrogate: 4-Bromofluorobenzene 27.24 25.0000 109 70 - 130 Surrogate: Dibromofluoromethane 26.45 25.0000 106 70 - 130 Surrogate: Toluene-d8 20.14 25.0000 80.6 70 - 130

3275 Walnut Avenue, Signal Hill, CA 90755 Tel: 562-989-4045 Fax: 562-989-4040 www.atlglobal.com Page 47 of 61 Certificate of Analysis

AMEC Project Number : Regional Connector, 4953-11-0471 6001 Rickenbacker Road Report To : Jay Neuhaus Los Angeles , CA 90040-3031 Reported : 04/08/2013

Volatile Organic Compounds by EPA 8260 - Quality Control (cont'd)

Result PQL Spike Source % Rec RPD Analyte (ug/L) (ug/L) Level Result % Rec Limits RPD Limit Notes

Batch B3D0081 - MSVOAW_LL (continued)

LCS (B3D0081-BS1) Prepared: 4/4/2013 Analyzed: 4/4/2013 1,1-Dichloroethene 15.6500 20.0000 78.2 70 - 130 Benzene 49.4000 40.0000 124 70 - 130 Chlorobenzene 17.0600 20.0000 85.3 70 - 130 MTBE 15.3100 20.0000 76.6 70 - 130 Toluene 33.8300 40.0000 84.6 70 - 130 Trichloroethene 17.1000 20.0000 85.5 70 - 130 Surrogate: 1,2-Dichloroethane-d4 28.11 25.0000 112 70 - 130 Surrogate: 4-Bromofluorobenzene 28.97 25.0000 116 70 - 130 Surrogate: Dibromofluoromethane 23.42 25.0000 93.7 70 - 130 Surrogate: Toluene-d8 21.12 25.0000 84.5 70 - 130

3275 Walnut Avenue, Signal Hill, CA 90755 Tel: 562-989-4045 Fax: 562-989-4040 www.atlglobal.com Page 48 of 61 Certificate of Analysis

AMEC Project Number : Regional Connector, 4953-11-0471 6001 Rickenbacker Road Report To : Jay Neuhaus Los Angeles , CA 90040-3031 Reported : 04/08/2013

Volatile Organic Compounds by EPA 8260 - Quality Control (cont'd)

Result PQL Spike Source % Rec RPD Analyte (ug/L) (ug/L) Level Result % Rec Limits RPD Limit Notes

Batch B3D0081 - MSVOAW_LL (continued)

LCS Dup (B3D0081-BSD1) Prepared: 4/4/2013 Analyzed: 4/4/2013 1,1-Dichloroethene 15.8000 20.0000 79.0 70 - 130 0.954 20 Benzene 43.9800 40.0000 110 70 - 130 11.6 20 Chlorobenzene 16.4400 20.0000 82.2 70 - 130 3.70 20 MTBE 16.8900 20.0000 84.4 70 - 130 9.81 20 Toluene 30.6200 40.0000 76.6 70 - 130 9.96 20 Trichloroethene 15.5100 20.0000 77.6 70 - 130 9.75 20 Surrogate: 1,2-Dichloroethane-d4 24.53 25.0000 98.1 70 - 130 Surrogate: 4-Bromofluorobenzene 23.94 25.0000 95.8 70 - 130 Surrogate: Dibromofluoromethane 23.14 25.0000 92.6 70 - 130 Surrogate: Toluene-d8 18.86 25.0000 75.4 70 - 130

3275 Walnut Avenue, Signal Hill, CA 90755 Tel: 562-989-4045 Fax: 562-989-4040 www.atlglobal.com Page 49 of 61 Certificate of Analysis

AMEC Project Number : Regional Connector, 4953-11-0471 6001 Rickenbacker Road Report To : Jay Neuhaus Los Angeles , CA 90040-3031 Reported : 04/08/2013

Volatile Organic Compounds by EPA 5035/EPA 8260 - Quality Control

Result PQL Spike Source % Rec RPD Analyte (ug/kg) (ug/kg) Level Result % Rec Limits RPD Limit Notes

Batch B3C0501 - MSVOAS

Blank (B3C0501-BLK1) Prepared: 3/29/2013 Analyzed: 3/29/2013 1,1,1,2-Tetrachloroethane ND 5.0 NR 1,1,1-Trichloroethane ND 5.0 NR 1,1,2,2-Tetrachloroethane ND 5.0 NR 1,1,2-Trichloroethane ND 5.0 NR 1,1-Dichloroethane ND 5.0 NR 1,1-Dichloroethene ND 5.0 NR 1,1-Dichloropropene ND 5.0 NR 1,2,3-Trichloropropane ND 5.0 NR 1,2,3-Trichlorobenzene ND 5.0 NR 1,2,4-Trichlorobenzene ND 5.0 NR 1,2,4-Trimethylbenzene ND 5.0 NR 1,2-Dibromo-3-chloropropane ND 10 NR 1,2-Dibromoethane ND 5.0 NR 1,2-Dichlorobenzene ND 5.0 NR 1,2-Dichloroethane ND 5.0 NR 1,2-Dichloropropane ND 5.0 NR 1,3,5-Trimethylbenzene ND 5.0 NR 1,3-Dichlorobenzene ND 5.0 NR 1,3-Dichloropropane ND 5.0 NR 1,4-Dichlorobenzene ND 5.0 NR 2,2-Dichloropropane ND 5.0 NR 2-Chlorotoluene ND 5.0 NR 4-Chlorotoluene ND 5.0 NR 4-Isopropyltoluene ND 5.0 NR Benzene ND 5.0 NR Bromobenzene ND 5.0 NR Bromochloromethane ND 5.0 NR Bromodichloromethane ND 5.0 NR Bromoform ND 5.0 NR Bromomethane ND 5.0 NR Carbon disulfide ND 5.0 NR Carbon tetrachloride ND 5.0 NR Chlorobenzene ND 5.0 NR Chloroethane ND 5.0 NR Chloroform ND 5.0 NR Chloromethane ND 5.0 NR cis-1,2-Dichloroethene ND 5.0 NR cis-1,3-Dichloropropene ND 5.0 NR Di-isopropyl ether ND 5.0 NR Dibromochloromethane ND 5.0 NR Dibromomethane ND 5.0 NR

3275 Walnut Avenue, Signal Hill, CA 90755 Tel: 562-989-4045 Fax: 562-989-4040 www.atlglobal.com Page 50 of 61 Certificate of Analysis

AMEC Project Number : Regional Connector, 4953-11-0471 6001 Rickenbacker Road Report To : Jay Neuhaus Los Angeles , CA 90040-3031 Reported : 04/08/2013

Volatile Organic Compounds by EPA 5035/EPA 8260 - Quality Control (cont'd)

Result PQL Spike Source % Rec RPD Analyte (ug/kg) (ug/kg) Level Result % Rec Limits RPD Limit Notes

Batch B3C0501 - MSVOAS (continued)

Blank (B3C0501-BLK1) - Continued Prepared: 3/29/2013 Analyzed: 3/29/2013 Dichlorodifluoromethane ND 5.0 NR Ethyl Acetate ND 50 NR Ethyl Ether ND 50 NR Ethyl tert-butyl ether ND 5.0 NR Ethylbenzene ND 5.0 NR Freon-113 ND 5.0 NR Hexachlorobutadiene ND 5.0 NR Isopropylbenzene ND 5.0 NR m,p-Xylene ND 10 NR Methylene chloride ND 5.0 NR MTBE ND 5.0 NR n-Butylbenzene ND 5.0 NR n-Propylbenzene ND 5.0 NR Naphthalene ND 5.0 NR o-Xylene ND 5.0 NR sec-Butylbenzene ND 5.0 NR Styrene ND 5.0 NR tert-Amyl methyl ether ND 5.0 NR tert-Butanol ND 100 NR tert-Butylbenzene ND 5.0 NR Tetrachloroethene ND 5.0 NR Toluene ND 5.0 NR trans-1,2-Dichloroethene ND 5.0 NR trans-1,3-Dichloropropene ND 50 NR Trichloroethene ND 5.0 NR Trichlorofluoromethane ND 5.0 NR Vinyl acetate ND 50 NR Vinyl chloride ND 5.0 NR Surrogate: 1,2-Dichloroethane-d4 49.56 50.0000 99.1 56 - 159 Surrogate: 4-Bromofluorobenzene 51.77 50.0000 104 69 - 131 Surrogate: Dibromofluoromethane 53.89 50.0000 108 60 - 127 Surrogate: Toluene-d8 52.86 50.0000 106 70 - 121

3275 Walnut Avenue, Signal Hill, CA 90755 Tel: 562-989-4045 Fax: 562-989-4040 www.atlglobal.com Page 51 of 61 Certificate of Analysis

AMEC Project Number : Regional Connector, 4953-11-0471 6001 Rickenbacker Road Report To : Jay Neuhaus Los Angeles , CA 90040-3031 Reported : 04/08/2013

Volatile Organic Compounds by EPA 5035/EPA 8260 - Quality Control (cont'd)

Result PQL Spike Source % Rec RPD Analyte (ug/kg) (ug/kg) Level Result % Rec Limits RPD Limit Notes

Batch B3C0501 - MSVOAS (continued)

LCS (B3C0501-BS1) Prepared: 3/29/2013 Analyzed: 3/29/2013 1,1-Dichloroethene 51.1800 5.0 50.0000 102 70 - 130 Benzene 99.1500 5.0 100.000 99.2 70 - 130 Chlorobenzene 49.0000 5.0 50.0000 98.0 70 - 130 MTBE 50.7300 5.0 50.0000 101 70 - 130 Toluene 103.750 5.0 100.000 104 70 - 130 Trichloroethene 53.2600 5.0 50.0000 107 70 - 130 Surrogate: 1,2-Dichloroethane-d4 48.09 50.0000 96.2 56 - 159 Surrogate: 4-Bromofluorobenzene 51.81 50.0000 104 69 - 131 Surrogate: Dibromofluoromethane 51.74 50.0000 103 60 - 127 Surrogate: Toluene-d8 53.61 50.0000 107 70 - 121

3275 Walnut Avenue, Signal Hill, CA 90755 Tel: 562-989-4045 Fax: 562-989-4040 www.atlglobal.com Page 52 of 61 Certificate of Analysis

AMEC Project Number : Regional Connector, 4953-11-0471 6001 Rickenbacker Road Report To : Jay Neuhaus Los Angeles , CA 90040-3031 Reported : 04/08/2013

Volatile Organic Compounds by EPA 5035/EPA 8260 - Quality Control (cont'd)

Result PQL Spike Source % Rec RPD Analyte (ug/kg) (ug/kg) Level Result % Rec Limits RPD Limit Notes

Batch B3C0501 - MSVOAS (continued)

LCS Dup (B3C0501-BSD1) Prepared: 3/29/2013 Analyzed: 3/29/2013 1,1-Dichloroethene 49.0400 5.0 50.0000 98.1 70 - 130 4.27 20 Benzene 93.3300 5.0 100.000 93.3 70 - 130 6.05 20 Chlorobenzene 46.1500 5.0 50.0000 92.3 70 - 130 5.99 20 MTBE 50.5800 5.0 50.0000 101 70 - 130 0.296 20 Toluene 98.9900 5.0 100.000 99.0 70 - 130 4.70 20 Trichloroethene 49.5400 5.0 50.0000 99.1 70 - 130 7.24 20 Surrogate: 1,2-Dichloroethane-d4 48.92 50.0000 97.8 56 - 159 Surrogate: 4-Bromofluorobenzene 52.04 50.0000 104 69 - 131 Surrogate: Dibromofluoromethane 52.82 50.0000 106 60 - 127 Surrogate: Toluene-d8 53.56 50.0000 107 70 - 121

3275 Walnut Avenue, Signal Hill, CA 90755 Tel: 562-989-4045 Fax: 562-989-4040 www.atlglobal.com Page 53 of 61 Certificate of Analysis

AMEC Project Number : Regional Connector, 4953-11-0471 6001 Rickenbacker Road Report To : Jay Neuhaus Los Angeles , CA 90040-3031 Reported : 04/08/2013

Semivolatile Organic Compounds by EPA 8270C - Quality Control

Result PQL Spike Source % Rec RPD Analyte (ug/kg) (ug/kg) Level Result % Rec Limits RPD Limit Notes

Batch B3C0503 - MSSEMI_ISOTOPEDILN

Blank (B3C0503-BLK1) Prepared: 3/29/2013 Analyzed: 3/29/2013 1,2,4-Trichlorobenzene ND 330 NR 1,2-Dichlorobenzene ND 330 NR 1,3-Dichlorobenzene ND 330 NR 1,4-Dichlorobenzene ND 330 NR 2,4,5-Trichlorophenol ND 330 NR 2,4,6-Trichlorophenol ND 330 NR 2,4-Dichlorophenol ND 1600 NR 2,4-Dimethylphenol ND 330 NR 2,4-Dinitrophenol ND 1600 NR 2,4-Dinitrotoluene ND 330 NR 2,6-Dinitrotoluene ND 330 NR 2-Chloronaphthalene ND 330 NR 2-Chlorophenol ND 330 NR 2-Methylnaphthalene ND 330 NR 2-Methylphenol ND 330 NR 2-Nitroaniline ND 1600 NR 2-Nitrophenol ND 330 NR 3,3´-Dichlorobenzidine ND 660 NR 3-Nitroaniline ND 1600 NR 4,6-Dinitro-2-methyphenol ND 1600 NR 4-Bromophenyl-phenylether ND 330 NR 4-Chloro-3-methylphenol ND 660 NR 4-Chloroaniline ND 660 NR 4-Chlorophenyl-phenylether ND 330 NR 4-Methylphenol ND 330 NR 4-Nitroaniline ND 1600 NR 4-Nitrophenol ND 330 NR Acenaphthene ND 330 NR Acenaphthylene ND 330 NR Anthracene ND 330 NR Benzidine (M) ND 1600 NR Benzo(a)anthracene ND 330 NR Benzo(a)pyrene ND 330 NR Benzo(b)fluoranthene ND 330 NR Benzo(g,h,i)perylene ND 330 NR Benzo(k)fluoranthene ND 330 NR Benzoic acid ND 1600 NR Benzyl alcohol ND 660 NR bis(2-chloroethoxy)methane ND 330 NR bis(2-Chloroethyl)ether ND 330 NR bis(2-chloroisopropyl)ether ND 330 NR

3275 Walnut Avenue, Signal Hill, CA 90755 Tel: 562-989-4045 Fax: 562-989-4040 www.atlglobal.com Page 54 of 61 Certificate of Analysis

AMEC Project Number : Regional Connector, 4953-11-0471 6001 Rickenbacker Road Report To : Jay Neuhaus Los Angeles , CA 90040-3031 Reported : 04/08/2013

Semivolatile Organic Compounds by EPA 8270C - Quality Control (cont'd)

Result PQL Spike Source % Rec RPD Analyte (ug/kg) (ug/kg) Level Result % Rec Limits RPD Limit Notes

Batch B3C0503 - MSSEMI_ISOTOPEDILN (continued)

Blank (B3C0503-BLK1) - Continued Prepared: 3/29/2013 Analyzed: 3/29/2013 bis(2-ethylhexyl)phthalate ND 330 NR Butylbenzylphthalate ND 330 NR Chrysene ND 330 NR Di-n-butylphthalate ND 330 NR Di-n-octylphthalate ND 330 NR Dibenz(a,h)anthracene ND 330 NR Dibenzofuran ND 330 NR Diethyl phthalate ND 330 NR Dimethyl phthalate ND 330 NR Fluoranthene ND 330 NR Fluorene ND 330 NR Hexachlorobenzene ND 330 NR Hexachlorobutadiene ND 660 NR Hexachlorocyclopentadiene ND 660 NR Hexachloroethane ND 330 NR Indeno(1,2,3-cd)pyrene ND 330 NR Isophorone ND 330 NR N-Nitroso-di-n propylamine ND 330 NR N-Nitrosodiphenylamine ND 330 NR Naphthalene ND 330 NR Nitrobenzene ND 330 NR Pentachlorophenol ND 1600 NR Phenanthrene ND 330 NR Phenol ND 330 NR Pyrene ND 330 NR Pyridine ND 1600 NR Surrogate: 1,2-Dichlorobenzene-d4 2577 3333.33 77.3 48 - 113 Surrogate: 2,4,6-Tribromophenol 2189 3333.33 65.7 14 - 162 Surrogate: 2-Chlorophenol-d4 2787 3333.33 83.6 40 - 117 Surrogate: 2-Fluorobiphenyl 2810 3333.33 84.3 52 - 126 Surrogate: 2-Fluorophenol 3081 3333.33 92.4 26 - 124 Surrogate: 4-Terphenyl-d14 3261 3333.33 97.8 36 - 163 Surrogate: Nitrobenzene-d5 2934 3333.33 88.0 42 - 118 Surrogate: Phenol-d5 2817 3333.33 84.5 29 - 124

3275 Walnut Avenue, Signal Hill, CA 90755 Tel: 562-989-4045 Fax: 562-989-4040 www.atlglobal.com Page 55 of 61 Certificate of Analysis

AMEC Project Number : Regional Connector, 4953-11-0471 6001 Rickenbacker Road Report To : Jay Neuhaus Los Angeles , CA 90040-3031 Reported : 04/08/2013

Semivolatile Organic Compounds by EPA 8270C - Quality Control (cont'd)

Result PQL Spike Source % Rec RPD Analyte (ug/kg) (ug/kg) Level Result % Rec Limits RPD Limit Notes

Batch B3C0503 - MSSEMI_ISOTOPEDILN (continued)

LCS (B3C0503-BS1) Prepared: 3/29/2013 Analyzed: 3/29/2013 1,2,4-Trichlorobenzene 2665.67 330 3333.33 80.0 62 - 101 1,4-Dichlorobenzene 2438.00 330 3333.33 73.1 58 - 93 2,4-Dinitrotoluene 3148.33 330 3333.33 94.4 67 - 133 2-Chlorophenol 2624.67 330 3333.33 78.7 63 - 100 4-Chloro-3-methylphenol 2893.67 660 3333.33 86.8 70 - 120 4-Nitrophenol 3006.33 330 3333.33 90.2 55 - 137 Acenaphthene 2903.67 330 3333.33 87.1 73 - 112 N-Nitroso-di-n propylamine 3438.67 330 3333.33 103 56 - 114 Pentachlorophenol 2072.33 1600 3333.33 62.2 61 - 125 Phenol 2756.33 330 3333.33 82.7 61 - 106 Pyrene 2694.00 330 3333.33 80.8 66 - 122 Surrogate: 1,2-Dichlorobenzene-d4 2579 3333.33 77.4 48 - 113 Surrogate: 2,4,6-Tribromophenol 2661 3333.33 79.8 14 - 162 Surrogate: 2-Chlorophenol-d4 2808 3333.33 84.2 40 - 117 Surrogate: 2-Fluorobiphenyl 2861 3333.33 85.8 52 - 126 Surrogate: 2-Fluorophenol 2873 3333.33 86.2 26 - 124 Surrogate: 4-Terphenyl-d14 2917 3333.33 87.5 36 - 163 Surrogate: Nitrobenzene-d5 2991 3333.33 89.7 42 - 118 Surrogate: Phenol-d5 2854 3333.33 85.6 29 - 124

3275 Walnut Avenue, Signal Hill, CA 90755 Tel: 562-989-4045 Fax: 562-989-4040 www.atlglobal.com Page 56 of 61 Certificate of Analysis

AMEC Project Number : Regional Connector, 4953-11-0471 6001 Rickenbacker Road Report To : Jay Neuhaus Los Angeles , CA 90040-3031 Reported : 04/08/2013

Semivolatile Organic Compounds by EPA 8270C - Quality Control (cont'd)

Result PQL Spike Source % Rec RPD Analyte (ug/kg) (ug/kg) Level Result % Rec Limits RPD Limit Notes

Batch B3C0503 - MSSEMI_ISOTOPEDILN (continued)

Matrix Spike (B3C0503-MS1) Source: 1300952-04 Prepared: 3/29/2013 Analyzed: 3/29/2013 1,2,4-Trichlorobenzene 3257.67 330 3333.33 ND 97.7 52 - 111 1,4-Dichlorobenzene 3003.33 330 3333.33 ND 90.1 47 - 101 2,4-Dinitrotoluene 3753.67 330 3333.33 ND 113 66 - 134 2-Chlorophenol 3140.67 330 3333.33 ND 94.2 55 - 107 4-Chloro-3-methylphenol 3357.33 660 3333.33 ND 101 64 - 129 4-Nitrophenol 3767.00 330 3333.33 ND 113 56 - 144 Acenaphthene 3472.33 330 3333.33 ND 104 63 - 121 N-Nitroso-di-n propylamine 3928.33 330 3333.33 ND 118 45 - 123 Pentachlorophenol 2545.67 1600 3333.33 ND 76.4 51 - 144 Phenol 3234.00 330 3333.33 ND 97.0 50 - 116 Pyrene 3336.67 330 3333.33 ND 100 65 - 127 Surrogate: 1,2-Dichlorobenzene-d4 3211 3333.33 96.3 48 - 113 Surrogate: 2,4,6-Tribromophenol 3139 3333.33 94.2 14 - 162 Surrogate: 2-Chlorophenol-d4 3418 3333.33 103 40 - 117 Surrogate: 2-Fluorobiphenyl 3484 3333.33 105 52 - 126 Surrogate: 2-Fluorophenol 3524 3333.33 106 26 - 124 Surrogate: 4-Terphenyl-d14 3537 3333.33 106 36 - 163 Surrogate: Nitrobenzene-d5 3565 3333.33 107 42 - 118 Surrogate: Phenol-d5 3443 3333.33 103 29 - 124

3275 Walnut Avenue, Signal Hill, CA 90755 Tel: 562-989-4045 Fax: 562-989-4040 www.atlglobal.com Page 57 of 61 Certificate of Analysis

AMEC Project Number : Regional Connector, 4953-11-0471 6001 Rickenbacker Road Report To : Jay Neuhaus Los Angeles , CA 90040-3031 Reported : 04/08/2013

Semivolatile Organic Compounds by EPA 8270C - Quality Control (cont'd)

Result PQL Spike Source % Rec RPD Analyte (ug/kg) (ug/kg) Level Result % Rec Limits RPD Limit Notes

Batch B3C0503 - MSSEMI_ISOTOPEDILN (continued)

Matrix Spike Dup (B3C0503-MSD1) Source: 1300952-04 Prepared: 3/29/2013 Analyzed: 3/29/2013 1,2,4-Trichlorobenzene 3233.00 330 3333.33 ND 97.0 52 - 111 0.760 20 1,4-Dichlorobenzene 2940.67 330 3333.33 ND 88.2 47 - 101 2.11 20 2,4-Dinitrotoluene 3579.00 330 3333.33 ND 107 66 - 134 4.76 20 2-Chlorophenol 3177.33 330 3333.33 ND 95.3 55 - 107 1.16 20 4-Chloro-3-methylphenol 3275.00 660 3333.33 ND 98.3 64 - 129 2.48 20 4-Nitrophenol 3617.33 330 3333.33 ND 109 56 - 144 4.05 20 Acenaphthene 3449.33 330 3333.33 ND 103 63 - 121 0.665 20 N-Nitroso-di-n propylamine 3910.33 330 3333.33 ND 117 45 - 123 0.459 20 Pentachlorophenol 2443.00 1600 3333.33 ND 73.3 51 - 144 4.12 20 Phenol 3218.67 330 3333.33 ND 96.6 50 - 116 0.475 20 Pyrene 3152.00 330 3333.33 ND 94.6 65 - 127 5.69 20 Surrogate: 1,2-Dichlorobenzene-d4 3102 3333.33 93.1 48 - 113 Surrogate: 2,4,6-Tribromophenol 2916 3333.33 87.5 14 - 162 Surrogate: 2-Chlorophenol-d4 3387 3333.33 102 40 - 117 Surrogate: 2-Fluorobiphenyl 3483 3333.33 104 52 - 126 Surrogate: 2-Fluorophenol 3495 3333.33 105 26 - 124 Surrogate: 4-Terphenyl-d14 3266 3333.33 98.0 36 - 163 Surrogate: Nitrobenzene-d5 3588 3333.33 108 42 - 118 Surrogate: Phenol-d5 3368 3333.33 101 29 - 124

3275 Walnut Avenue, Signal Hill, CA 90755 Tel: 562-989-4045 Fax: 562-989-4040 www.atlglobal.com Page 58 of 61 Certificate of Analysis

AMEC Project Number : Regional Connector, 4953-11-0471 6001 Rickenbacker Road Report To : Jay Neuhaus Los Angeles , CA 90040-3031 Reported : 04/08/2013

Notes and Definitions

R RPD value outside acceptance criteria. Calculation is based on raw values.

D1 Sample required dilution due to possible matrix interference.

ND Analyte not detected at or above reporting limit

PQL Practical Quantitation Limit

MDL Method Detection Limit

NR Not Reported RPD Relative Percent Difference CA1 CA-NELAP (CDPH)

CA2 CA-ELAP (CDPH)

OR1 OR-NELAP (OSPHL)

TX1 TX-NELAP (TCEQ)

Notes: (1) The reported MDL and PQL are based on prep ratio variation and analytical dilution. (2) The suffix [2C] of specific analytes signifies that the reported result is taken from the instrument's second column.

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