ATTACHMENT 6 - 1237-1001_Soil_Groundwater_Sampling_Report_MP.pdf

1725 Victory Boulevard, Glendale, California 91201 / P 818.246.2707 / F 818.246.3145 www.citadelenvironmental.com

July 25, 2018

Eloy Luna

Engineering Geologist Associate IV

LOS ANGELES FIRE DEPARTMENT

Underground Storage Tank & Plan Check Unit

200 North Main Street, Suite 1780

Los Angeles, CA 90013

Re: CITADEL Project No. 1237.1001.0

Soil and Groundwater Sampling Report

Underground Storage Tank and Associated Piping

11301 Wilshire Boulevard

Los Angeles, California 90073

Dear Mr. Luna:

Citadel Environmental Services, Inc. is pleased to provide you with this Soil and

Groundwater Sampling Report for the above-referenced location.

The sampling activities described in this report were conducted in accordance with Citadel’s workplan dated March 26, 2018. Citadel submitted a letter under the provisions of Article 11, Chapter 16, Title 23 of the California Code of Regulations to implement the workplan on May 30, 2018.

If, after your review, you have any questions or require additional information, please do not hesitate to telephone me at the Citadel Office at (818) 246-2707.

Sincerely, CITADEL ENVIRONMENTAL SERVICES, INC.

Mark Drollinger, M. Eng., CSP, CHMM, EiT

Director, Engineering and Environmental Sciences

Enclosure http://www.citadelenvironmental.com/

1725 Victory Boulevard, Glendale, California 91201 / P 818.246.2707 / F 818.246.3145 www.citadelenvironmental.com

Los Angeles Fire Department Los Angeles, California 90013

Soil and Groundwater Sampling Report

July 25, 2018

Citadel Project Number 1237.1001.0

Underground Storage Tank

Los Angeles, California 90049 www.citadelenvironmental.com http://www.citadelenvironmental.com/

CITADEL PROJECT NO. 1237.1001.0

SOIL AND GROUNDWATER SAMPLING REPORT

UNDERGROUND STORAGE TANK AND ASSOCIATED PIPING

11301 WILSHIRE BOULEVARD

LOS ANGELES, CALIFORNIA

JULY 25, 2018

Table of Contents

1.0 INTRODUCTION AND BACKGROUND

2.0 GEOLOGY/HYDROGEOLOGY

3.0 PREVIOUS INVESTIGATIONS

4.0 FIELD ACTIVITEIS

4.1 Pre-Sampling Activities

4.2 Soil Sampling along UST Transfer Piping

4.3 Soil and Groundwater Sampling near Underground Storage Tank

5.0 FINDINGS AND ANALYSIS

5.1 Soil Sampling along UST Transfer Piping

5.2 Soil and Groundwater Sampling near Underground Storage Tank

6.0 CONCLUSIONS

7.0 SIGNATURES

LIST OF FIGURES

Figure 1 Site Location Map Figure 2 Site Map Figure 3 Site Map showing Sampling Locations

TABLES

Table 1 Total Petroleum Hydrocarbons (TPH) and Benzene, Toluene, Ethylbenzene, Xylenes (BTEX) and Oxygenates in Soil Table 2 Total Petroleum Hydrocarbons (TPH) and Benzene, Toluene, Ethylbenzene, Xylenes (BTEX) and Oxygenates in Water

APPENDICES

Appendix A Health and Safety Plan Appendix B Geophysical Survey Report Appendix C USA Digalert Ticket Appendix D Los Angeles County Public Health Well Permit Appendix E Boring Logs Appendix F Citadel Field Notes Appendix G Laboratory Reports and Chain of Custody Documentation

11301 WILSHIRE BOULEVARD

1237-1001_Soil_Groundwater_Sampling_Report_MP 1

1.0 INTRODUCTION AND BACKGROUND

Citadel Environmental Services, Inc. (Citadel) is pleased to provide this Soil and Groundwater

Sampling Report for the underground storage tank (UST) located west of Bonsall Avenue and north of Eisenhower Avenue, at the VA-GLAHS West Los Angeles Medical Center (WLAMC), at 11301

Wilshire Boulevard in Los Angeles, California (Site). The Ste is at an elevation of approximately 350 feet above mean sea level (msl). A Site Location Map and Site Map are included as Figure 1 and

Figure 2, respectively.

According to previous reports, the approximate 300,000-gallon UST may have been installed in or around 1964 and is constructed of reinforced concrete with an interior and exterior protective coating. The dimensions of the UST vault are 85 feet by 48 feet. Subsurface conduits were detected in the vicinity of the UST. The UST was used for bulk storage of fuel oil for an on-Site boiler house and was placed out of service in 1993. At this time, the VA-GLAHS has plans to decommission the UST by abandoning in place. The fuel oil has been removed and the interior cleaned. Residual water remains in the UST and was sampled as part of this investigation. The water is likely from infiltration of storm water and/or irrigation water run-off. Please refer to Figure 2 showing the approximate UST and transfer piping locations.

In advance of closure activities, Citadel conducted this assessment of soil and groundwater at the

Site for potential adverse impacts due to the prior storage of fuel oil.

2.0 GEOLOGY/HYDROGEOLOGY

The Site is shown on the geologic map of the Beverly Hills and Van Nuys (south 1/2) quadrangle1as underlain by Holocene-aged alluvium (Qoa), described as older alluvium of gray to light brown pebble-gravel, sand, silt, and clay derived from the Santa Monica Mountains.

The Site is situated in the Coastal Plain of Los Angeles Groundwater Basin, Santa Monica Subbasin, according the California Department of Water Resources Bulletin 1182. Holocene age alluvium forms much of the surficial deposits for the central part of the subbasin. Groundwater in this subbasin moves mainly southward toward the Ballona Gap, then flows toward the ocean. The depth to groundwater from previous environmental assessments at the VA-GLAHS and other nearby sites is estimated to be at approximately 65 feet below ground surface (bgs).

A review of previous investigations on the Site and nearby cases on Geotracker, groundwater was estimated to be encountered between approximately 264 feet to 271 feet msl or approximately

79 to 86 feet below ground surface (bgs) based on the Site elevation of 350 feet msl.

3.0 PREVIOUS INVESTIGATIONS

In August 2016, Citadel advanced seven soil borings surrounding the UST perimeter using a direct push drill rig. Borings identified as Soil Boring-1 (SB-1) to SB-5 and SB-7 were advanced to 25 feet bgs. Boring SB-6 attempted to reach groundwater but encountered refusal at 41.5 feet bgs.

Soil samples were analyzed for Total Petroleum Hydrocarbons (TPH) by EPA Method 8015B and

Benzene, Toluene, Ethylbenzene, and Xylenes (BTEX) by EPA Method 8260B. Results were non-detect for BTEX compounds in all samples. TPH was non-detect in all samples except the 15-foot

1 Dibblee and Ehrenspeck, H.E., ed., 1991, Geologic Map of the Beverly Hills and Van Nus (south ½) quadrangle, Los

Angeles County, California.

2 California Department of Water Resources, California Groundwater: Bulletin 118, 2004.

11301 WILSHIRE BOULEVARD

1237-1001_Soil_Groundwater_Sampling_Report_MP 2 bgs samples from borings SB-1 and SB-7, both located near the southern end of the UST. Maximum concentrations of TPH as gasoline (TPHg), TPH as diesel (TPHd) and TPH as oil (TPHo) were 5.72 mg/kg, 1,300 mg/kg and 27.5 mg/kg, respectively.

4.0 FIELD ACTIVITEIS

4.1 Pre-Sampling Activities

A site-specific Health and Safety Plan (HASP) was prepared prior to on-site activities. The HASP identified existing and potential hazards for workers at the Site during drilling and sample collection activities. A copy of the HASP and sign in sheet is included in Appendix A.

Prior to collection of soil and groundwater samples, Citadel conducted a geophysical survey at the Site on June 1, 2018, using ground penetrating radar and electromagnetic techniques to identify subsurface utilities and clear the proposed boring locations. A copy of the geophysical survey report is included as Appendix B. Citadel personnel also marked onsite sampling areas with white chalk paint and contacted Underground Service Alert (USA) to allow member utility companies to mark subsurface conduits on and adjacent to the Site. A copy of the USA Dig Alert ticket is included as Appendix C.

Prior to collection of soil and groundwater samples, a Non-Production Monitoring Well permit was acquired from the County of Los Angeles County Department of Environmental Health (LACDEH).

A copy of the approved permit is included in Appendix D.

4.2 Soil Sampling along UST Transfer Piping

On June 5, 2018, Citadel advanced 12 soil borings (identified as SB-1 to SB-12) adjacent to the transfer piping between the UST and the boiler building located northeast of Bonsall Avenue, using a direct push drill rig. These borings were advanced to depths of between five and 15 feet below ground surface (bgs). Based on the results of the geophysical survey and visible observations, the base of the underground conduit that runs between the UST and the boiler building northeast of

Bonsall Avenue is located approximately five to six feet below grade adjacent to the UST;

approximately 10 feet below grade after turning to the northeast across Bonsall Avenue;

approximately 15 feet below grade perpendicular to Bonsall Avenue; and approximately 10 feet below grade near the boiler building. Based on these approximate depths, four soil borings near the UST (SB-1 to SB-4) were advanced to approximately six feet bgs; two borings across Bonsall

Avenue (SB-5 and SB-6) were advanced to approximately 10 feet bgs; four borings along the conduit perpendicular to Bonsall Avenue (SB-7 to SB-10) were advanced to approximately 15 feet bgs; and two borings near the boiler building (SB-11 and SB-12) were advanced to approximately

10 feet bgs.

The soil samples from these borings were logged under the direction of a Professional Geologist;

detailed boring logs are included in Appendix E and Citadel’s field notes are included in Appendix

F. Soil samples collected from each boring were field screened with a photo-ionization detector

(PID) for the presence of volatile organic compounds (VOCs).

The soil samples were placed in a cooler with ice and delivered to American Scientific Laboratory

(ASL) under proper Chain of Custody (COC) procedures.

After completion of sampling, the soil borings were backfilled with bentonite granules and patched to match the surrounding surface.

11301 WILSHIRE BOULEVARD

1237-1001_Soil_Groundwater_Sampling_Report_MP 3

4.3 Soil and Groundwater Sampling near Underground Storage Tank

On June 6, 2018, Citadel advanced two borings to groundwater (identified as GB-1 and GB-2) on the southwest and northeast sides of the UST using a hollow stem auger rig.

To determine approximate depth to groundwater at the Site, Citadel reviewed the Regional

Water Control Board Geotracker database of known environmental cases in the Site vicinity. A former UST case located approximately 3,300 feet east of the Site encountered groundwater during a 2008 sampling event at an approximate elevation of 264 feet msl. Another former UST case located approximately 3,800 feet west of the Site encountered groundwater at approximately 271 feet above msl in a 2009 sampling event. All of the sites reviewed show the groundwater gradient in the area approximately to the south or southeast matching the topography in the area and placing the sites to the east and west directly cross gradient from the

Site. Using the Site elevation of approximately 350 feet msl, and the groundwater elevation at the two cross gradient sites, groundwater was expected to be encountered between 264 and 271 feet above msl or approximately 79 to 86 feet bgs.

Citadel collected soil samples from the groundwater borings at five, 15, and 20 feet bgs; and at ten-foot intervals thereafter. The soil borings were logged under the direction of a Professional

Geologist; detailed boring logs are included in Appendix E and Citadel’s field notes are included in Appendix F. Soil samples collected from each boring were field screened with a PID for the presence of VOCs.

Groundwater was encountered in the GB-1 and GB-2 at approximately 95 feet bgs; groundwater samples were collected from both borings using a new unused bailer.

After completion of sampling, the groundwater borings were backfilled as per guidelines provided in the well permit from the LACDEH. Accordingly, the groundwater borings were backfilled with cement grout, proceeding upward from the bottom of the borings. The cement grout used for backfilling had a ratio of 5-6 gallons of water per 94-pound bag of Portland cement. Due to time constraints, GB-1 was backfilled on June 11, 2018.

In addition, a water sample was collected from an access port in the UST for analysis.

The soil and groundwater samples were placed in a cooler with ice and delivered to American

Scientific Laboratory (ASL) under proper Chain of Custody (COC) procedures.

5.0 FINDINGS AND ANALYSIS

5.1 Soil Sampling along UST Transfer Piping

Field PID readings for the soil samples ranged from 0.0 to 0.1 parts per million (ppm). The soil samples were analyzed for total petroleum hydrocarbons (TPH) by EPA Method 8015B and BTEX compounds by EPA Method 8260B. TPH and BTEX compounds were not reported above laboratory practical quantitation limits (pql) in any of the soil samples. The laboratory results are summarized in Table 1.

5.2 Soil and Groundwater Sampling near Underground Storage Tank

VOCs were not detected during the field screening with the PID in any of the soil samples from the groundwater borings, with the exception of the 60-foot sample from GB-1, at 0.1 ppm.

11301 WILSHIRE BOULEVARD

1237-1001_Soil_Groundwater_Sampling_Report_MP 4

The soil and groundwater samples from the groundwater borings were analyzed for TPH by EPA

Method 8015 and BTEX compounds and methyl tert-butyl ether, di-isopropyl ether, ethyl tert-butyl ether, tert-amyl methyl ether and tertiary butyl alcohol (oxygenates) by EPA Method 8260B. TPH, BTEX compounds and Oxygenates were not reported above the laboratory pql in any of the soil and groundwater samples.

The water sample from the UST was also analyzed for TPH by EPA Method 8015 and BTEX and

Oxygenates by EPA Method 8260B. TPH, BTEX compounds and Oxygenates were not reported above the laboratory pql in the UST water sample. The laboratory results for soil and water samples are summarized in Tables 1 and 2.

Detailed laboratory reports with COC documentation are included in Appendix G.

6.0 CONCLUSIONS

The investigation was intended to evaluate soil and groundwater at the Site for impacts due to a potential release of petroleum hydrocarbons from the UST and associated piping in preparation for submitting a Los Angeles Fire Department Division 5 permit for closure of the UST. Soil samples were collected at depths of five to 15 feet bgs along the transfer piping between the UST and the boiler building northeast of Bonsall Avenue. Soil and groundwater samples were collected from near the UST. TPH, BTEX compounds and Oxygenate compounds were not reported to be present in the soil and groundwater samples. This indicates that there have been no subsurface impacts from the UST and associated transfer piping.

The site meets the general requirements for low threat closure under the Low-Threat Underground

Storage Tank Closure Policy. Citadel therefore recommends that permission be obtained from the

LAFD to abandon the UST in place.

11301 WILSHIRE BOULEVARD

1237-1001_Soil_Groundwater_Sampling_Report_MP 5

7.0 SIGNATURES

Report Prepared by:

Roopal Jani

Staff Geologist

Reviewed and Approved by:

T. Michael Pendergrass, PG 5685

Senior Project Manager

Figures

Source: USGS, Beverly Hills Quadrangle, 2015, 7.5 Minute Series Not to Scale

CONCOURSE FEDERAL GROUP

Los Angeles CA

Figure 1 PROJECT NO: 1237.1001.0

DATE: JULY 2018

Site Location Map

SITE LOCATION

Source: Google Earth Not to Scale

LOS ANGELES FIRE DEPARTMENT

CUPA SECTION

Bonsall Avenue

West Los Angeles Medical Center Los Angeles CA

Figure 2 PROJECT NO: 1237.1001.0

Site Map showing Sampling Locations

APPROXIMATE

UST LOCATION

- Approximate Location of Transfer Piping between UST and boiler building

Source: Google Earth Not to Scale

CONCOURSE FEDERAL GROUP

Los Angeles, CA

Figure 3 PROJECT NO: 1237.1001.0

Site Map showing Sampling Locations

APPROXIMATE

UST LOCATION

- Approximate Location of Borings to Groundwater

- Approximate Location of Transfer Piping between UST and boiler building

- Approximate Location of Borings Along Pipeline Route

SB-1

SB-2

SB-3 SB-4

SB-5

SB-6

SB-7

SB-8

SB-9

SB-10

SB-11

SB-12

GB-1

GB-2

Tables

TPHg mg/kg

TPHd mg/kg

TPHo mg/kg

Benzene mg/kg

Toluene mg/kg

Ethyl-benzene mg/kg o-Xylene mg/kg m,p-

Xylene mg/kg

MTBE DIPE ETBE TAME TBA Comment

SB-1 6 6/5/2018 <0.500 <10 <50 <0.002 <0.002 <0.002 <0.002 <0.004 -- -- -- -- --

SB-2 6 6/5/2018 <0.500 <10 <50 <0.002 <0.002 <0.002 <0.002 <0.004 -- -- -- -- --

SB-3 6 6/5/2018 <0.500 <10 <50 <0.002 <0.002 <0.002 <0.002 <0.004 -- -- -- -- --

SB-4 6 6/5/2018 <0.500 <10 <50 <0.002 <0.002 <0.002 <0.002 <0.004 -- -- -- -- --

SB-5 10 6/5/2018 <0.500 <10 <50 <0.002 <0.002 <0.002 <0.002 <0.004 -- -- -- -- --

SB-6 10 6/5/2018 <0.500 <10 <50 <0.002 <0.002 <0.002 <0.002 <0.004 -- -- -- -- --

SB-7 10 6/5/2018 <0.500 <10 <50 <0.002 <0.002 <0.002 <0.002 <0.004 -- -- -- -- --

SB-7 15 6/5/2018 <0.500 <10 <50 <0.002 <0.002 <0.002 <0.002 <0.004 -- -- -- -- --

SB-8 10 6/5/2018 <0.500 <10 <50 <0.002 <0.002 <0.002 <0.002 <0.004 -- -- -- -- --

SB-8 15 6/5/2018 <0.500 <10 <50 <0.002 <0.002 <0.002 <0.002 <0.004 -- -- -- -- --

SB-9 10 6/5/2018 <0.500 <10 <50 <0.002 <0.002 <0.002 <0.002 <0.004 -- -- -- -- --

SB-9 15 6/5/2018 <0.500 <10 <50 <0.002 <0.002 <0.002 <0.002 <0.004 -- -- -- -- --

SB-10 10 6/5/2018 <0.500 <10 <50 <0.002 <0.002 <0.002 <0.002 <0.004 -- -- -- -- --

SB-10 15 6/5/2018 <0.500 <10 <50 <0.002 <0.002 <0.002 <0.002 <0.004 -- -- -- -- --

SB-11 10 6/5/2018 <0.500 <10 <50 <0.002 <0.002 <0.002 <0.002 <0.004 -- -- -- -- --

SB-12 10 6/5/2018 <0.500 <10 <50 <0.002 <0.002 <0.002 <0.002 <0.004 -- -- -- -- --

GB-1 5 6/6/2018 <0.500 <10 <50 <0.002 <0.002 <0.002 <0.002 <0.004 <0.005 <0.005 <0.005 <0.005 <0.020

GB-1 15 6/6/2018 <0.500 <10 <50 <0.002 <0.002 <0.002 <0.002 <0.004 <0.005 <0.005 <0.005 <0.005 <0.020

GB-1 20 6/6/2018 <0.500 <10 <50 <0.002 <0.002 <0.002 <0.002 <0.004 <0.005 <0.005 <0.005 <0.005 <0.020

GB-1 30 6/6/2018 <0.500 <10 <50 <0.002 <0.002 <0.002 <0.002 <0.004 <0.005 <0.005 <0.005 <0.005 <0.020

GB-1 40 6/6/2018 <0.500 <10 <50 <0.002 <0.002 <0.002 <0.002 <0.004 <0.005 <0.005 <0.005 <0.005 <0.020

GB-1 50 6/6/2018 <0.500 <10 <50 <0.002 <0.002 <0.002 <0.002 <0.004 <0.005 <0.005 <0.005 <0.005 <0.020

GB-1 60 6/6/2018 <0.500 <10 <50 <0.002 <0.002 <0.002 <0.002 <0.004 <0.005 <0.005 <0.005 <0.005 <0.020

GB-1 80 6/6/2018 <0.500 <10 <50 <0.002 <0.002 <0.002 <0.002 <0.004 <0.005 <0.005 <0.005 <0.005 <0.020

GB-1 90 6/6/2018 <0.500 <10 <50 <0.002 <0.002 <0.002 <0.002 <0.004 <0.005 <0.005 <0.005 <0.005 <0.020

GB-2 5 6/6/2018 <0.500 <10 <50 <0.002 <0.002 <0.002 <0.002 <0.004 <0.005 <0.005 <0.005 <0.005 <0.020

GB-2 15 6/6/2018 <0.500 <10 <50 <0.002 <0.002 <0.002 <0.002 <0.004 <0.005 <0.005 <0.005 <0.005 <0.020

GB-2 20 6/6/2018 <0.500 <10 <50 <0.002 <0.002 <0.002 <0.002 <0.004 <0.005 <0.005 <0.005 <0.005 <0.020

GB-2 30 6/6/2018 <0.500 <10 <50 <0.002 <0.002 <0.002 <0.002 <0.004 <0.005 <0.005 <0.005 <0.005 <0.020

GB-2 40 6/6/2018 <0.500 <10 <50 <0.002 <0.002 <0.002 <0.002 <0.004 <0.005 <0.005 <0.005 <0.005 <0.020

Table 1. Total Petroleum Hydrocarbons (TPH) and Benzene, Toluene, Ethylbenzene, Xylenes (BTEX) and Oxygenates in Soil

11301 Wilshire Boulevard

Los Angeles, CA

Boring/

Sample ID

Sample

Depth

(Feet)

Date

Sampled

Total Petroleum Hydrocarbons (TPH) -

EPA Method 8015B

Benzene, Toluene, Ethylbenzene, Xylenes (BTEX)

EPA Method 8260B

Citadel Project No. 1237.1001 mg/kg

TPHd mg/kg

TPHo mg/kg

Benzene mg/kg

Toluene mg/kg

Ethyl-benzene mg/kg o-Xylene mg/kg m,p-

Xylene mg/kg

MTBE DIPE ETBE TAME TBA Comment

Table 1. Total Petroleum Hydrocarbons (TPH) and Benzene, Toluene, Ethylbenzene, Xylenes (BTEX) and Oxygenates in Soil

11301 Wilshire Boulevard

Los Angeles, CA

Boring/

Sample ID

Sample

Depth

(Feet)

Date

Sampled

Total Petroleum Hydrocarbons (TPH) -

EPA Method 8015B

Benzene, Toluene, Ethylbenzene, Xylenes (BTEX)

EPA Method 8260B

GB-2 50 6/6/2018 <0.500 <10 <50 <0.002 <0.002 <0.002 <0.002 <0.004 <0.005 <0.005 <0.005 <0.005 <0.020

GB-2 60 6/6/2018 <0.500 <10 <50 <0.002 <0.002 <0.002 <0.002 <0.004 <0.005 <0.005 <0.005 <0.005 <0.020

GB-2 70 6/6/2018 <0.500 <10 <50 <0.002 <0.002 <0.002 <0.002 <0.004 <0.005 <0.005 <0.005 <0.005 <0.020

GB-2 80 6/6/2018 <0.500 <10 <50 <0.002 <0.002 <0.002 <0.002 <0.004 <0.005 <0.005 <0.005 <0.005 <0.020

GB-2 90 6/6/2018 <0.500 <10 <50 <0.002 <0.002 <0.002 <0.002 <0.004 <0.005 <0.005 <0.005 <0.005 <0.020

Notes:

< = Analyte not detected at or above reporting limit

-- = Not analyzed

TPHg = Total Petroleum Hydrocarbons - Gasoline

TPHd = Total Petroleum Hydrocarbons - Diesel

TPHo = Total Petroleum Hydrocarbons - Oil

MTBE = Methyl tert-Butyl Ether

DIPE = Di-Isopropyl Ether

ETBE = Ethyl tert-Butyl Ether

TAME = Tert-Amyl Methyl Ether

TBA = Tertiary Butyl Alcohol

Detected concentrations are shown in bold type µg/L

TPHd µg/L

TPHo µg/L

Benzene µg/L

Toluene µg/L

Ethyl-benzene µg/L o-Xylene µg/L m,p-Xylene µg/L MTBE DIPE ETBE TAME TBA Comment

GW-1 6/6/2018 <50 <500 <500 <1 <1 <1 <1 <2 <2 <2 <2 <1 <10 Boring GB-1

GW-2 6/5/2018 <50 <500 <500 <1 <1 <1 <1 <2 <2 <2 <2 <1 <10 Boring GB-2

UST-1 6/5/2018 <50 <500 <500 <1 <1 <1 <1 <2 <2 <2 <2 <1 <10 UST

Notes:

< = Analyte not detected at or above reporting limit

-- = Not analyzed

TPHg - Total Petroleum Hydrocarbons - Gasoline

TPHd - Total Petroleum Hydrocarbons - Diesel

TPHo - Total Petroleum Hydrocarbons - Oil

MTBE = Methyl tert-Butyl Ether

DIPE = Di-Isopropyl Ether

ETBE = Ethyl tert-Butyl Ether

TAME = Tert-Amyl Methyl Ether

TBA = Tertiary Butyl Alcohol

Detected concentrations are shown in bold type

Table 2. Total Petroleum Hydrocarbons (TPH) and Benzene, Toluene, Ethylbenzene, Xylenes (BTEX) and Oxygenates in Water

11301 Wilshire Boulevard

Los Angeles, CA

Boring/

Sample ID

Date

Sampled

Total Petroleum Hydrocarbons (TPH) -

EPA Method 8015B

Benzene, Toluene, Ethylbenzene, Xylenes (BTEX)

EPA Method 8260B

Appendix A

Health and Safety Plan

Los Angeles Fire Department CUPA Section 200 North Main Street, Suite 1780 Los Angeles, California 90012

Health and Safety Plan

March 26, 2018

Citadel Project Number 1237.1001.0

Underground Storage Tank Bonsall Avenue

Los Angeles, California 90073 www.citadelenvironmental.com

HEALTH AND SAFETY PLAN

UNDERGROUND STORAGE TANK

BONSALL AVENUE

MARCH 26, 2018

Table of Contents

1.0 SITE DESCRIPTION

2.0 BACKGROUND

3.0 SAFETY POLICY

4.0 WORK DESCRIPTION

5.0 KEY PROJECT PERSONNEL AND RESPONSIBILITIES

PROJECT MANAGER

SITE SAFETY OFFICER/PROJECT MONITOR

SUBCONTRACTOR PERSONNEL

6.0 SITE CONTROL MEASURES

7.0 STANDARD OPERATING PROCEDURES

GENERAL SAFETY

HAZARD EVALUATION

COMMUNICATION PROCEDURES

FIELD VEHICLES

MANUAL LIFTING

HEAT EXPOSURE

8.0 PERSONAL PROTECTIVE EQUIPMENT

9.0 DECONTAMINATION PROCEDURES

10.0 EMERGENCY PROCEDURES

SIGNATURE PAGE

BONSALL AVENUE

1237-1001_HASP_MP 1

1.0 SITE DESCRIPTION

The Project is located west of Bonsall Avenue and north of Eisenhower Avenue, at the Veterans

Affairs – Greater Los Angeles Healthcare System (VA – GLAHS) West Los Angeles Medical Center

(WLAMC), Los Angeles, California (Site).

Citadel Environmental Services, Inc., (Citadel) has prepared this Health and Safety Plan (HASP) for use during drilling and sampling activities to be conducted at the Site. Activities conducted under

Citadel’s direction at the Site will be in compliance with applicable Occupational Safety and

Health Administration (OSHA) regulations, particularly those in Title 8 California Code of

Regulations (CCR) 5192, and other applicable federal, state, and local laws, regulations, and statutes. A copy of this HASP will be kept onsite during scheduled field activities.

2.0 BACKGROUND

Citadel understands that an underground storage tank (UST), with a capacity of approximately

420,000 gallons, may have been installed in or around 1964 at the Site. The UST is constructed of reinforced concrete with an interior and exterior protective coating. The UST was used for bulk storage of fuel oil for an on-Site “boiler house” and was taken out of service in 1993. The fuel oil has been removed from the UST and the interior cleaned.

In advance of closure activities, an assessment of the soil and groundwater must be completed to determine if the surrounding soil and groundwater has been impacted from a release of fuel oil. Citadel will therefore collect groundwater and soil samples to identify and characterize any potential soil and groundwater contamination from the UST and associated piping.

3.0 SAFETY POLICY

Safety will be given primary importance in the planning and operation of this project. It is the policy of Citadel to conform to current OSHA standards in construction and local government agency requirements having authority over the project as regards to Citadel employees, subcontractors and public safety.

Each subcontracting firm will assume primary responsibility for the safety of their own work in regards to their employees and other persons. Subcontractors will assume the duty to comply with

OSHA, and all other federal, state and local regulations.

The subcontractors work will be monitored by Citadel project managers for implementation of the

Citadel HASP, while adhering to their own safety program. Citadel will retain the authority and power to enforce this HASP during the progress of the work. Any deficiencies in safe work practices will be brought to the attention of the subcontractor firm’s supervisor for immediate corrective action. If the subcontractor fails or refuses to take corrective action promptly a stop work order shall be issued and the subcontractor or the subcontractor employee may be removed from the project.

4.0 WORK DESCRIPTION

Citadel conducted a geophysical survey at the Site during a previous investigation in September

2016. Based on the results of this survey, there is an empty pump room located to the south of the

UST. The transit piping was previously removed, and apparently ran southeast from the pump room to a northeast-southwest-running concrete corridor located below a concrete walkway. The

BONSALL AVENUE

1237-1001_HASP_MP 2

dimensions of the UST vault are 85 feet by 48 feet. Subsurface conduits were detected in the vicinity of the UST during the geophysical survey.

Citadel will advance two borings (SB-1 to SB-2) using a hollow stem rig to groundwater, which is at approximately 65 feet below ground surface (bgs) in the Site vicinity. Soil samples will be collected at five, 15, 20, 30, 40, 50, and 60 feet bgs. Citadel will also collect soil samples (SB-3 to SB-16) from an approximate depth of six to 10 feet bgs at 14 locations along transfer piping located between the UST and the boiler building across Bonsall Avenue to the northeast. The soil borings will be logged under the direction of a Professional Geologist. Soil samples collected from each boring will be field screened with a photo-ionization detector (PID).

Hazards that may be associated with the project include heavy moving equipment, and soil and groundwater potentially impacted with petroleum hydrocarbons.

5.0 KEY PROJECT PERSONNEL AND RESPONSIBILITIES

Project Manager Mark Drollinger (Citadel)

Site Safety Officer (SSO)/Project Monitor TBD (Citadel)

Subcontractor TBD

Site Representative TBD

PROJECT MANAGER

The Project Manager has the ultimate responsibility for the health and safety of personnel at the

Site. The Project Manager is responsible for:

▪ Ensuring that project personnel review and understand the requirements of this HASP;

▪ Keeping on-site personnel, including subcontractors, informed of the expected hazards and appropriate protective measures at the Site; and

▪ Providing resources necessary for maintaining a safe and health work environment.

SITE SAFETY OFFICER/PROJECT MONITOR

The SSO is responsible for enforcing the requirements of this HASP once site work begins. The SSO has the authority to immediately correct situations where noncompliance with this HASP is noted and to immediately stop work in cases where an immediate danger to site workers or the environment is perceived. Responsibilities of the SSO also include:

▪ Obtaining and distributing PPE and air monitoring equipment necessary for this project;

▪ Limiting access at the Site to authorized personnel;

▪ Communicating unusual or unforeseen conditions at the Site to the Project Manager;

▪ Supervising and monitoring the safety performance of site personnel to evaluate the effectiveness of health and safety procedures and correct deficiencies;

▪ Conducting daily tailgate safety meetings before each day’s activities begin; and

▪ Conducting a site safety inspection prior to the commencement of each day’s field activities.

SUBCONTRACTOR PERSONNEL

Subcontractor personnel are expected to comply with the minimum requirements specified in this

HASP. Failure to do so may result in the dismissal of the subcontractor or any of the subcontractor’s workers from the job site. Subcontractors may employ health and safety procedures that afford

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them a greater measure of personal protection than those specified in this plan as long as they do not pose additional hazards to themselves, the environment, or others working in the area.

6.0 SITE CONTROL MEASURES

The SSO or Project Manager has been designated to coordinate access and security on site.

7.0 STANDARD OPERATING PROCEDURES

GENERAL SAFETY

▪ Maintain good housekeeping at all times in all project work areas.

▪ Check the work area to determine what problems or hazards may exist.

▪ Designate specific areas for the proper storage of materials.

▪ Store tools, equipment, materials, and supplies in an orderly manner.

▪ Provide containers for collecting trash and other debris.

▪ Clean up all spills quickly.

▪ Report unsafe conditions or unsafe acts to your supervisor immediately.

▪ Report all occupational illnesses, injuries, and vehicle accidents.

▪ Do not wear loose clothing, wristwatches, and other loose accessories when within arm’s reach of moving machinery.

▪ Emergency exits and evacuation areas should be clearly marked during work activities.

▪ Personnel fall protection is required when climbing to perform maintenance six feet or higher above ground.

▪ Inspect hand tools and use proper PPE.

▪ Ensure proper grounding and guarding of equipment.

▪ Keep hands and fingers out of pinch points.

▪ Use good ergonomic posturing when working with heavy items.

HAZARD EVALUATION

The following substances are known or suspected to be on site. The primary hazards of each are identified as follows:

Substances Concentration Primary Hazards

Total Petroleum Hydrocarbons various ingestion, inhalation, skin

Volatile Organic Compounds various ingestion, inhalation, skin

COMMUNICATION PROCEDURES

Due to the close proximity of all field crew members, the necessity for radio communication is not necessary.

The following standard hand signals will be used:

Hand drawn across throat ......................................................................... Cease operation immediately

Hand gripping throat .............................................................................................. Out of air, can't breathe

Grip partner's wrist or both hands around waist .............................................. Leave area immediately

Hands on top of head .......................................................................................................... Need assistance

Thumbs up .......................................................................................................... OK, I am alright, understood

Thumbs down ............................................................................................................................... No, negative

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FIELD VEHICLES

▪ Equip vehicles with emergency supplies and equipment.

▪ Maintain both a first aid kit and fire extinguisher in the field vehicle at all times.

▪ Utilize a rotary beacon on vehicle if working adjacent to active roadway.

▪ Always wear seatbelt while operating vehicle.

▪ Tie down loose items.

MANUAL LIFTING

▪ Personnel shall seek assistance when performing manual lifting tasks that appear beyond their physical capabilities.

▪ Assess the situation before lifting, ensure good lifting and body positioning practices, and ensure good carrying and setting down practices.

HEAT EXPOSURE

▪ Limit exposure to the sun, or take extra precautions when the UV index rating is high.

▪ Take lunch and breaks in shaded areas.

▪ Create shade by using umbrellas, tents, and canopies.

▪ Wear proper clothing: long sleeved shirts with collars, long pants, and UV-protective sunglasses or safety glasses.

▪ Apply sunscreen generously to all exposed skin surfaces at least 20 minutes before exposure.

Re-apply sunscreen at least every 2 hours, and more frequently when sweating or performing activities where sunscreen may be wiped off.

▪ Communicate any concerns regarding heat stress to a supervisor.

▪ Keep hydrated throughout the day (about 4 cups per hour).

▪ OHSA’s Heat Index:

Heat Index Risk Level Protective Measures

Less than 91°F Lower (Caution) Basic heat safety and planning

91°F to 103°F Moderate Implement precautions and heighten awareness

103°F to 115°F High Additional precautions to protect workers

Greater than

115°F

Very High to

Extreme

Triggers even more aggressive protective measures

Utilities (Under Ground and Above Ground): Low Hazard. Utilities have been cleared during a geophysical survey.

Biological Hazards: Low to medium Hazard. Beware of spiders, insects and other possible animals.

Site Instability: Low to medium Hazard. The Site will be inspected prior to equipment placement and closely monitored. Any settling of the equipment will cause the work to stop immediately.

Equipment Refueling: Low Hazard. Equipment shall not be refueled with the engine running.

Cigarettes, open flames, or other ignition sources are not allowed within 50 feet of the fueling location.

Personnel Injury: Upon notification of an injury the Project Field Leader should evaluate the nature of the injury, and the affected person should be decontaminated to the extent possible prior to movement. The Project Field Leader shall initiate the appropriate first aid, and contact should be

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made for an ambulance and with the designated medical facility (if required).

Fire/Explosion: The fire department shall be alerted and all personnel moved to a safe distance from the involved area.

Other Equipment Failure: If any other equipment on site fails to operate properly, the Project Team

Leader shall be notified and then determine the effect of this failure on continuing operations on site.

If the failure affects the safety of personnel or prevents completion of the Work Plan tasks, work will cease until the situation is evaluated and appropriate actions taken.

8.0 PERSONAL PROTECTIVE EQUIPMENT

The purpose of PPE is to protect employees from hazards and potential hazards they are likely to encounter during site activities. The amount and type of PPE used will be based on the nature of the hazard encountered or anticipated. Respiratory protection will be utilized when an airborne hazard has been identified using real-time air monitoring devices, or as a precautionary measure in areas designated by the SSO, elevating to level C. If this occurs, contractor personnel shall be respirator-approved.

Dermal protection, primarily in the form of chemical-resistant gloves and coveralls, will be worn whenever contact with chemically affected materials (e.g. soils, groundwater, sludge) is anticipated, without regard to the level of respiratory protection required.

Based on evaluation of potential hazards, the following levels of personal protection have been designated for the applicable work areas or tasks:

Location Job Function Level of Protection

Controlled Area All workers A B C D Other

Specific protective equipment for each level of protection is as follows:

Level A Level C

Fully-encapsulating suit Splash gear

SCBA Half-face canister respirator with H2S/VOC cartridge

Disposable coveralls Mouth/nose canister respirator

Efficiency 100 (HEPA)

Level B Level D

Splash gear Hard hat

SCBA Ear plugs

Neoprene or leather gloves - nitrile gloves

Safety vests and Glasses

Hard toe boots

NO CHANGES TO THE SPECIFIED LEVELS OF PROTECTION SHALL BE MADE WITHOUT THE

APPROVAL OF THE SSO OR PROJECT MANAGER.

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9.0 DECONTAMINATION PROCEDURES

Despite protective procedures, personnel may come in contact with potentially hazardous compounds while performing work tasks. If so, decontamination needs to take place using an

Alconox or tri-sodium phosphate (TSP), followed by a rinse with clean water. Standard decontamination procedure for levels C and D are as follows:

▪ Equipment drop

▪ Boot cover and outer glove wash and rinse

▪ Boot cover and out glove removal

▪ Suit wash and rinse

▪ Suit removal

▪ Safety boot wash and rinse

▪ Inner glove wash and rinse

▪ Respirator removal

▪ Inner glove removal

▪ Field wash of hands and face

Workers should employ only applicable steps in accordance with level of PPE worn and extent of contamination present. The SSO shall maintain adequate quantities of clean water to be used for personal decontamination (i.e. field wash of hands and face) whenever a suitable washing facility is not located in the immediate vicinity of the work area. Disposable items will be disposed of in an appropriate container. Wash and rinse water generated from decontamination activities will be handled and disposed of properly. Non-disposable items may need to be sanitized before reuse.

Each site worker is responsible for the maintenance, decontamination, and sanitizing of his/her own

PPE.

Used equipment may be decontaminated as follows:

▪ An Alconox or TSP and water solution will be used to wash the equipment.

▪ The equipment will then be rinsed with clean water.

Each person must follow these procedures to reduce the potential for transferring chemically affected materials offsite.

10.0 EMERGENCY PROCEDURES

In the event of an emergency, site personnel will signal distress with three blasts of a horn (a vehicle horn will be sufficient), or other predetermined signal. Communication signals, such as hand signals, must be established where communication equipment is not feasible or in areas of loud noise.

The SSO will designate evacuation routes and refuge areas to be used in the event of an emergency.

Site personnel will stay upwind from vapors or smoke and upgradient from spills. Workers should exit through the established decontamination areas wherever possible. If evacuation cannot be done through an established decontamination area, site personnel will go to the nearest safe location and remove contaminated clothing there. Personnel will assemble at the predetermined refuge following evacuation and decontamination. The SSO will count and identify site personnel to verify that all personnel have been evacuated safely. Please refer to Figure 1.0 for the evacuation route and refuge location.

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FIGURE 1.0 – EVACUATION ROUTE AND REFUGE AREAS

- Approximate Site Boundaries

- Refuge Areas

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The designated medical facility is:

Ronald Reagan UCLA Medical Center Emergency Department

757 Westwood Plaza

Los Angeles, CA 90095

(310) 825-2111 (Emergency Department)

Directions:

Head northwest toward Bonsall Avenue 384 feet

Turn left onto Bonsall Avenue 82 feet

Turn right to stay on Bonsall Avenue 0.2 miles

Turn right onto Constitution Avenue 0.2 miles

Turn left onto S. Sepulveda Boulevard 0.6 miles

Turn right onto Montana Avenue 0.5 miles

Continue onto Gayley Avenue 0.5 miles

Turn left onto S. Buenos Aires Dr/Charles E Young Dr S 0.1 miles

Turn right onto Westwood Plasa 203 feet

Turn right, destination will be on right 154 feet

Appendix B

Geophysical Survey Report

SubSurface Surveys 2075 Corte Del Nogal, Suite W Carlsbad, California 92011

An Applied Geophysical Company Office: 760-476-0492 Fax: 760-476-0493

Subsurface Surveys & Associates, Inc. www.subsurfacesurveys.com contactus@subsurfacesurveys.com

Citadel Environmental Attn: Roopal Jani 1725 Victory Blvd Glendale, California 91201

June 6th, 2018

This report is to present the results of our geophysical survey carried out within portions of West Los Angeles Medical Center located near Bonsall Avenue in Los Angeles, California (Figure 1), on June 1st, 2018. The purpose of the survey was to locate and identify, insofar as possible, piping, conduit, and other underground utilities that may exist in the vicinity of fourteen (14) specific locations designated for future drilling activities.

A combination of electromagnetic induction (EM), magnetometry, and ground penetrating radar (GPR) were applied to the search. A utility locator with line tracing capabilities was also brought to the field and used where risers exist onto which a signal could be impressed and traced.

FIGURE 1 –Site Location Map (Map data ©2018 Google)

Subject:

Geophysical Survey

Bonsall Avenue Los Angeles, California

Project Number: 18-246

Survey Design – The areas to be surveyed, along with the specific borehole locations, were indicated in the field by the client. Twelve boreholes were positioned by the client and located along existing product piping originating from an underground storage tank (Figures 3-10, 12-15); while two boreholes were located on the east and west side of said UST (Figures 11 and 16).

The magnetic gradiometer, EM61, line tracer, M-Scope and GPR were traversed systematically over each borehole along the eight lines of the standard search pattern (Figure 2), wherein, there are two sets of three parallel lines, mutually orthogonal, and two diagonals, all centered on the marked drill location. Adjacent parallel lines are approximately 5 feet apart, and each line is approximately 20 feet long, access permitting.

Other traverses were taken, access permitting, for detailing and confirmation where anomalous conditions were found.

Figure 2: Standard search pattern around target

Hard copy of the EM data was not acquired, that is, discrete readings on the nodes of a grid were not recorded that could be put into a contoured map format. Rather, the instruments’ meters were read continuously, and in real-time, during each traverse. This free-traversing method allowed for immediate detection of anomalous objects and facilitated the opportunity to investigate them further, without first having to download data in the office. The lack of hard copy for EM data sets does not degrade the quality of the survey in any way. Hard copy merely provides a basis for report documentation of these geophysical fields, if such documentation is needed.

The line tracers were used to impress signals onto pipes, generally through accessible risers and tracer wires when present, to delineate the lines’ locations and orientations. The instruments were also used in passive mode, configured to detect 60 Hz electrical signals and other common radio-frequency signals.

A Geonic’s model EM61 and a Fischer M-Scope was used for the EM sampling. A Sensors and Software Noggin Ground Penetrating Radar unit with a 500 MHz antenna produced the radar images. The magnetic gradiometer was a Schonstedt GA-52, and a Metrotech 9890 and RIDGID SR-60 SeekTech utility locator rounded out the tools applied.

Brief Description of the Geophysical Methods Applied - The line locator is used to passively detect energized high voltage electric lines and electrical conduit (50-60 Hz), VLF signals (14-22 kHz), as well as to actively trace other utilities. Where risers are present, the utility locator transmitter can be connected directly to the object, and a signal (9.8-82 kHz) is sent traveling along the conductor, pipe, conduit, etc. In the absence of a riser, the transmitter can be used to impress an input signal on the utility by induction. In either case, the receiver unit is tuned to the input signal, and is used to actively trace the signal along the pipe’s surface projection.

The magnetic gradiometer has two flux gate magnetic fixed sensors that are passed closely to and over the ground. When not in close proximity to a magnetic object, that is, only in the earth's field, the instrument emits a sound signal at a low frequency. When the instrument passes over a buried iron or steel object, so that locally there is a high magnetic gradient, the frequency of the emitted sound increases. The frequency is a function of the gradient between the two sensors.

The EM61 instrument is a high resolution, time-domain device for detecting buried conductive objects. It consists of a powerful transmitter that generates a pulsed primary magnetic field when its coils are energized, which induces eddy currents in nearby conductive objects. The decay of the eddy currents, following the input pulse, is measured by the coils, which in turn serve as receiver coils. The decay rate is measured for two coils, mounted concentrically, one above the other. By making the measurements at a relatively long time interval (measured in milliseconds) after termination of the primary pulse, the response is nearly independent of the electrical conductivity of the ground. Thus, the instrument is a super-sensitive metal detector. Due to its unique coil arrangement, the response curve is a single well-defined positive peak directly over a buried conductive object. This facilitates quick and accurate location of targets.

The GPR instrument beams energy into the ground from its transducer/antenna, in the form of electromagnetic waves. A portion of this energy is reflected back to the antenna at a boundary in the subsurface across which there is an electrical contrast. The instrument produces a continuous record of the reflected energy as the antenna is traversed across the ground surface. The greater the electrical contrast, the higher the amplitude of the returned energy. The radar wave travels at a velocity unique to the material properties of the ground being investigated, and when these velocities are known, the two-way travel times can be converted to depth. The depth of penetration and image resolution produced are a function of ground electrical conductivity and dielectric constant.

The M-Scope device energizes the ground by producing an alternating primary magnetic field with AC current in a transmitting coil. If conducting materials are within the area of influence of the primary field, AC eddy currents are induced to flow in the conductors. A receiving coil senses the secondary magnetic field produced by these eddy currents, and outputs the response to a meter in the form of ground conductivity values for the M- Scope. The strength of the secondary field is a function of the conductivity of the object, say a pipe, tank or cluster of drums, its size, and its depth and position relative to the instrument's two coils. Conductive objects, to a depth of approximately 7 feet for the M-Scope are sensed. The devices are also somewhat focused; that is, they are more sensitive to conductors below the instrument than they are to conductors off to the side.

Interpretation and Conclusions - The interpretation took place in real time as the survey progressed, and accordingly, the findings of our investigation were marked on the ground cover with spray chalk paint and further documented site photographs of the surveyed areas (Figures 3-16).

The EM and magnetic instruments were effective at locating and delineating metallic objects and utilities over the search area. GPR was useful at detecting both metallic and non-metallic lines and utilities. According to principles of physics, radar penetration is a function of soil conductivity and dielectric constant.

Piping and utilities detected during the survey were marked with spray chalk paint on the ground cover using red for electric, green for sewer, yellow for gas and product lines, blue for water and steam lines and white for lines of unknown utility type. Each line is marked and labeled on the photographs.

Once all detectable buried cultural objects were marked and accounted for, our findings were discussed in the field with the client, at the conclusion of the survey. Each borehole was then marked cleared by Subsurface Surveys and Associates with a white circle and a yellow “SSS”. Please use the graphics along with the markings in the field for a better representation of our findings.

Limitations and Cautions - It should be understood that limitations inherent in geophysical instruments and/or surveying techniques exist at all sites, and nearly all sites exhibit conditions under which instruments might not perform optimally. Consequently, the detection of buried objects in all circumstances cannot be guaranteed.

Such limitations are numerous and include, but are not limited to, rebar-reinforced ground cover, abrupt changes in ground cover type, above-ground obstacles preventing full traverses or traverses in one direction only, above-ground conductive objects interfering with instrument signal, nearby powerlines or EM transmitters, highly conductive background soil conditions, limiting GPR penetration, non-metallic targets, shallower or larger objects shielding deeper or smaller targets, tracing signal jumping from one line to another, and inaccessible risers, cleanouts, valve boxes, and manholes. If one or more geophysical instrument is rendered ineffective and cannot be utilized, the quality of the survey can be somewhat degraded.

For the above reasons, and in the interest of maximum safety, we encourage our clients to take advantage of Underground Service Alert (USA), Dig Alert, or other similar services, when possible. Furthermore, we recommend hand-auguring and the use of a drilling method known as air knifing and vacuum extraction, when feasible or if applicable to this project. These methods may significantly limit damage to underground pipes, conduits, and utilities that might not have been detectable during the course of this survey. Please bear in mind, that geophysical surveying is only one of several levels of protection that is available to our clients.

SubSurface Surveys may include maps in some reports. While they are an accurate general representation of the site and our findings, they are not of engineering quality (i.e., measured and mapped by a licensed land surveyor).

SubSurface Surveys and Associates makes no guarantee either expressed or implied regarding the accuracy of the findings and interpretations present. And, in no event will SubSurface Surveys and Associates be liable for any direct, indirect, special, incidental, or consequential damages resulting from interpretations and opinions presented herewith.

All data acquired in…