HomeMy WebLinkAboutAttachment 3a-11 - Soil Vapor Study and HR Survey RedactedSoil Vapor Survey and Human Health
Risk Screening
Assessor’s Parcel Number 644-040-01
517 Shinohara Lane, Chula Vista, CA 91911
Presented to:
VWP-OP Shinohara Owner, LLC
2390 East Camelback Road, Suite 305
Phoenix, Arizona 85016
8799 Balboa Avenue, Suite 290
San Diego, CA 92123
858-571-5500
01221156.01 | August 5, 2021
APPENDIX J
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August 5, 2021
Number: 01221156.01
Mr. Steven Schwarz
WP-OP Shinohara Owner, LLC
2390 East Camelback Road, Suite 305
Phoenix, Arizona 85016
RE: Soil Vapor Survey and Human Health Risk Screening (Assessment)
Site: Assessor’s Parcel Number (APN) 644-040-01
517 Shinohara Lane, Chula Vista, California 91911
Dear Mr. Schwarz
SCS Engineers (SCS) is pleased to present this report (Report) of the Assessment of the
above-described Site that was conducted in order to evaluate the Site’s current environmental
conditions. The work described in this Report was performed by SCS in general accordance with
Exhibit 01 that was executed on July 9, 2021, and the Assignment and Assumptions of Contracts
provided by VWP-OP Shinohara Owner, LLC (Client).
SCS enjoyed working with you on this project. Providing economical environmental solutions to meet
your needs is more than our goal—it is our mission and the measure of our success. If we may assist
you in any way, now or in the future, please call our office at (858) 571-5500.
Sincerely,
Alissa Barrow, PE
Project Manager
Luke Montague, MESM, PG 8071
Vice President
SCS ENGINEERS SCS ENGINEERS
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Table of Contents
Section Page
1 Background ...................................................................................................................................... 1
2 Objectives ........................................................................................................................................ 2
3 Assessment...................................................................................................................................... 2
Preparation for Fieldwork .................................................................................................................. 2
Preparation of Health and Safety Plan .................................................................................... 2
Utility Search and Markout ...................................................................................................... 2
Field Activities ..................................................................................................................................... 3
Soil Vapor Sampling and Analysis ........................................................................................... 3
4 Findings ............................................................................................................................................ 3
Topography, Geology, Hydrogeology, and Water Quality Survey ..................................................... 3
Topography ............................................................................................................................... 3
Geology ...................................................................................................................................... 4
Hydrogeology ............................................................................................................................ 4
Water Quality Survey ................................................................................................................ 4
Laboratory Analytical Results ............................................................................................................ 5
Soil Vapor Sample Analytical Results ...................................................................................... 5
VOCs ...................................................................................................................... 5
5 Discussion ........................................................................................................................................ 5
VOCs in Soil Vapor .............................................................................................................................. 5
Vapor Intrusion Risk Screening (VIRS) .............................................................................................. 5
Approach ................................................................................................................................... 6
VIRS Results.............................................................................................................................. 6
6 Conclusions...................................................................................................................................... 7
7 Recommendation ............................................................................................................................ 8
8 Report Usage and Future Site Conditions ...................................................................................... 8
7 Likelihood Statements..................................................................................................................... 9
8 Special Contractual Conditions Between User and Environmental Professional .......................... 9
Table
1 Soil Vapor Sample Analytical Results for VOCs and Vapor Intrusion Risk Screening
Figures
1 Four-Way Site Location Map
2 Site Map with Soil Vapor Data
Appendix
Laboratory Analytical Report
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1 BACKGROUND
SCS Engineers (SCS) understands that 517 Shinohara Lane, Chula Vista, California 91911 (Site),
consists of one approximately 9.56-acre parcel of land (Figure 1). The Site is currently a vacant and
undeveloped lot. The Client is proposing to purchase the Site and develop it into an industrial land
use.
SCS prepared a report titled Phase I Environmental Site Assessment (Phase I ESA) for the Site dated
June 15, 2021. This Phase I ESA provided the following conclusions and recommendations regarding
a possible recognized environmental condition at the Site:
Omar Rendering facility located at 1886 Auto Park Place (Approximately 1,500 feet to the
east)
In May 1996, groundwater was found to be impacted by volatile organic compounds (VOCs)
at the property located adjacent to the east of the Site at the Brandywine Distribution Center
at 1670 & 1690 Brandywine Avenue. Groundwater results indicated the presence of VOCs
above laboratory reporting limits, primarily with trichloroethene (TCE) at 720 micrograms per
liter (ug/L), and also with tetrachloroethene (PCE) at 56 ug/L, and methylene chloride (MEC)
at 79 ug/L in MW-04.
It was determined that the property was not the source of the pollutants and that the likely
source is the former Omar Rendering facility located at 1886 Auto Park Place, a property that
stored hazardous waste in evaporation ponds from 1959 to 1978, which were situated to
the east and cross- to up-gradient of the Brandywine Distribution Center.
The Regional Water Quality Control Board (RWQCB) closed the case administratively in 2017,
noting the Brandywine Distribution Center was not the source of the contamination and that
the samples collected at the property suggest a potential threat to indoor air. The RWQCB
recommended more recent groundwater data.
Omar Rendering facility is approximately 1,500 feet to the east and cross- to up-gradient of
the Site and began remediation circa 1980, with removal of the waste ponds and their
disposal at a permitted location. In 1981, the impacted soil beneath the waste ponds was
placed in a lined and capped waste cell in the northwest corner of the property.
Subsequently, the waste cell has been maintained and monitored by the RWQCB.
In January 2021, during the most recent sampling event at the former Omar Rendering
facility, the monitoring well closest to the Site, well MW-18, situated approximately 1,500
feet to the east of the Site, indicated results for TCE at 4.3 ug/L. No additional recent well
data was available for wells closer to the Site to indicate whether or not the TCE plume may
still be in the immediate vicinity of or beneath the Site.
Based on the concentrations of VOCs at the east-adjacent property indicated in 1996 (up to
720 ug/L TCE), the cross- to up-gradient position of the source with respect to the
groundwater flow direction to the Site (southwest), that the presence of TCE was reported to
be present in the monitoring well closest to the Site from the source in the most recent
groundwater monitoring report from January 2021, and that no additional, more recent data
is available to indicate whether or not the TCE plume may still be in the immediate vicinity of
or beneath the Site, there is a low to moderate likelihood that a recognized environmental
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condition exists at the Site in connection with the former release from the Omar Rendering
facility. Additional assessment (e.g., soil vapor sampling) would be necessary to evaluate the
potential associated releases.
Based on the Phase I ESA conclusions and recommendations and conversations with the Client, SCS
completed a soil vapor survey and human health risk screening at the Site to assess the potential
recognized environmental condition associated with the historical Site release from the nearby Omar
Rendering facility.
2 OBJECTIVES
The objectives of the scope of services were to:
Assess the possible presence and concentrations of VOCs in the shallow soil vapor beneath
the Site in connection with an unauthorized release of VOCs from the Omar Rendering facility
located at 1886 Auto Park Place, which were detected in groundwater at the east adjacent
facility located at 1670 & 1690 Brandywine Avenue.
Assess the likelihood that Significant1 human health risk exists at the Site as a result of
vapor phase migration of VOCs.
3 ASSESSMENT
PREPARATION FOR FIELDWORK
Preparation of Health and Safety Plan
A health and safety plan for work conducted at the Site and workers within the “exclusion zone” is
required pursuant to the regulations found in 29 Code of Federal Regulations (CFR) Part 1910.120
and California Code of Regulations (CCR), Title 8, Section 5192. Therefore, a health and safety plan
was prepared for the proposed work scope, which outlined the potential chemical and physical
hazards that may have been encountered during drilling and sampling activities. The appropriate
personal protective equipment and emergency response procedures for the anticipated Site-specific
chemical and physical hazards were detailed in this plan. SCS and contracted personnel involved
with the proposed field work were required to read and sign this document in order to encourage
proper health and safety practices.
Utility Search and Markout
SCS notified Underground Service Alert on July 8, 2021, as required by state law, prior to drilling and
sampling activities and was issued ticket number B211890779-00B. In addition, a private utility
locator, Subsurface Alert, was subcontracted to clear the proposed boring locations for possible
subsurface utility conflicts. These procedures were designed to minimize the likelihood of drilling
into a subsurface utility. The soil vapor locations were adjusted as necessary to avoid conflicts with
identified subsurface features.
1 For the purposes of this assessment, significant is defined as greater than one in 1,000,000 excess lifetime cancer
risk or a hazard index of greater than 1.
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FIELD ACTIVITIES
Soil Vapor Sampling and Analysis
On July 13, 2021, SCS oversaw the drilling and installation of four soil vapor probes (SV1 through
SV4) (Figure 2) in representative portions of the Site to assess the possible presence and
concentrations of VOCs in the soil vapor in connection with the historical nearby release from the
Omar Rendering facility. The Site was divided into quadrants and one soil vapor sample was
collected from each quadrant.
The soil vapor sample borings were advanced with a direct-push drilling rig to a depth of
approximately 5 feet below grade. Soil vapor sampling activities were conducted in general
accordance with the Department of Toxic Substances Control (DTSC), Los Angeles Regional Water
Quality Control Board (RWQCB), and San Francisco RWQCB Advisory on Active Soil Gas
Investigations, dated July 2015. A temporary soil vapor well, consisting of Nylaflow™ tubing attached
to a soil gas probe tip, was installed near the bottom of each boring. An appropriate sand pack a
minimum of 6 inches thick was placed around the soil gas probe tip, and the borings were backfilled
with at least 6 inches of dry granular bentonite above each sample port, and topped with hydrated
granular bentonite to the surface. The soil vapor sampling probes were allowed to stabilize for
approximately 2 hours prior to sampling, followed by removing the DTSC-default of three purge
volumes, and performing a shut-in test and leak test.
Soil vapor samples were collected from the soil vapor sampling probes by collecting soil vapor drawn
through the probes into laboratory-provided glass syringes. Soil vapor samples were handed to an
on-Site state-certified, mobile laboratory (H&P Mobile Geochemistry) and analyzed for VOCs in
general accordance with U.S. Environmental Protection Agency (EPA) Method 8260SV. In
accordance with the DTSC guidance, one replicate sample was analyzed (SV3-5 Rep). Chain-of-
custody procedures were implemented for sample tracking.
4 FINDINGS
TOPOGRAPHY, GEOLOGY, HYDROGEOLOGY, AND WATER QUALITY
SURVEY
Topography
A topographic map for the Site vicinity was reviewed and is summarized in the following table.
Reported Elevation 150 to 240 feet above mean sea level
Reported Slope Direction Slopes down to the south
Source United States Geological Survey 7.5 Minute Topographic Map,
Imperial Beach Quadrangle, California – San Diego County, 2018
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Geology
A geological map for the Site vicinity was reviewed and is summarized in the following table.
Reported Formation Old alluvial flood-plain deposits (Qoa), undivided late to middle
Pleistocene aged
Reported Description
Fluvial sediments deposited on canyon floors. Consists of
moderately well consolidated, poorly sorted, permeable,
commonly slightly dissected gravel, sand, silt, and clay-bearing
alluvium
Source
Kennedy, Michael P., and Siang S. Tan, Geologic Map of the San
Diego 30' × 60' Quadrangle, California, California Geological
Survey, 2008
Hydrogeology
Data regarding depth to groundwater and flow direction for the Site were not readily available. In the
absence of Site-specific data, depth to groundwater and flow direction information was reviewed for
properties within the Site vicinity using the State Water Resources Control Board GeoTracker
database. The following table summarizes the results of this review.
Property Location Adjacent to the east of the Site
Reported Depth to
Groundwater 52.6 to 76.3 feet below grade
Reported Groundwater
Flow Direction Southwest
Source
Soil and Groundwater Investigation, Brandywine Distribution
Center, 1670 and 1690 Brandywine Avenue, Chula Vista,
California, prepared by Ogden Environmental and dated May
1996
Please note that many variables influence depth to groundwater and flow direction and the actual
depth to groundwater and flow direction at the Site may be different than presented in this section.
Water Quality Survey
The following table summarizes the reported water quality in the Site vicinity.
Reported Hydrologic Area Otay Valley (910.20)
Reported Hydrologic Unit Otay (910.00)
Reported Beneficial Use Industrial
Source
California RWQCB, San Diego Region, Water Quality Control
Plan for the San Diego Basin, September 8, 1994, with
amendments effective prior to May 17, 2016
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LABORATORY ANALYTICAL RESULTS
Soil Vapor Sample Analytical Results
A summary of the laboratory analytical results for soil vapor is presented below. A complete listing of
the results is presented in the laboratory analytical report included in Appendix A. The data are
presented in Table 1 and depicted on Figure 2.
VOCs
A total of five soil vapor samples, identified as SV1-5, SV2-5, SV3-5, SV3-5 Rep, and SV4-5, were
analyzed for VOCs in general accordance with EPA Method 8260SV.
Benzene was reported to be present in three of the five soil vapor samples at concentrations of
0.021 micrograms per liter (µg/L) (SV1-5 and SV3-5) and 0.24 µg/L (SV3-5 Rep).
Trichloroethene (TCE) was reported to be present in one of the five soil vapor samples (SV4-5) at a
concentration of 0.032 µg/L.
m,p-Xylenes were reported to be present in one of the five soil vapor samples (SV4-5) at a
concentration of 0.10 µg/L.
All other VOCs analyzed were reported to be below the respective laboratory reporting limits. Please
refer to the analytical laboratory report contained in Appendix A for a full listing of VOCs analyzed and
their respective reporting limits.
Since VOCs were reported to be present above laboratory reporting limits, a vapor intrusion risk
screening (VIRS) was conducted to assess the likelihood that a Significant vapor intrusion risk exists
at the Site as a result of vapor phase migration of VOCs. See the “Vapor Intrusion Risk Screening
(VIRS)” section below.
5 DISCUSSION
VOCS IN SOIL VAPOR
The VOCs reported to be present in soil vapor beneath the Site included benzene, xylenes, and TCE.
Benzene and xylenes are typical constituents of petroleum hydrocarbons, likely from the former
Omar Rendering facility plume. TCE is a solvent used in many industrial applications and is also
likely from the Omar Rendering facility plume. Based on the low concentrations at which they were
detected at the Site, it’s unlikely the VOCs in soil vapor resulted from a point source or significant
release at the Site, but more likely have migrated beneath the Site from the nearby Omar Rendering
facility or another off-Site source.
VAPOR INTRUSION RISK SCREENING (VIRS)
Since VOCs were reported to be present in soil vapor beneath the Site, a VIRS was conducted to
assess the potential for Significant human health risk posed to future occupants of the proposed
industrial Site building due to the upward migration of CVOCs in soil vapor. SCS understands that as
of January 24, 2019, the DTSC has archived the Johnson and Ettinger Human Health Risk
Assessment Model. Therefore, SCS has conducted a vapor intrusion risk screening using current
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DTSC screening criteria, as described below, and the Site-specific slab attenuation factor, as
described above.
Approach
VOCs may originate from either impacted soil or groundwater. In this case, VOCs are interpreted to
be from a release from the nearby Omar Rendering facility, which were able to migrate in soil vapor
beneath the Site. The highest soil vapor concentrations detected beneath the Site were
conservatively assumed to be present beneath the entire Site to estimate conservative-case-
scenario predicted indoor air concentrations for the future industrial building at the Site. The
estimate of the theoretical indoor air concentrations were then compared against the most recently
published screening levels2,3 to assess the potential for Significant human health risk posed to
industrial users of the Site due to the upward migration of CVOCs in soil vapor.
The VIRS was conducted using the DTSC default Attenuation Factor4 (AF) of 0.0005 for future
commercial/ industrial buildings. To be conservative, the AF was applied to the highest reported
concentration of each constituent (benzene, m,p-xylenes, and TCE) reported in soil vapor. The
resulting values were compared against the DTSC-Modified Screening Levels (DTSC-SLs) provided in
DTSC Human Health Risk Assessment (HHRA) Note 35, or, for chemicals not listed in HHRA Note 3
(m,p-xylenes), the USEPA Regional Screening Levels (RSLs)6.
VIRS Results
The maximum reported concentrations of VOCs detected at the Site are presented in the table
below, along with the associated DTSC-SL. Please note that only the constituents reported to be
present beneath the Site building were evaluated.
VOC
Maximum Concentration
Detected Beneath the Site
Building
Predicted Indoor Air
Concentration1
DTSC/EPA Screening
Levels2,3
(µg/m3)
TCE 32 0.016 2.0
Benzene 24 0.012 0.42
m,p-Xylenes 100 0.05 440
Notes:
µg/m3 = micrograms per cubic meter
TCE = Trichloroethene
1 Soil vapor concentration multiplied by the attenuation factor (AF) of 0.0005 for future commercial/ industrial use, as
determined by DTSC Final Vapor Intrusion Guidance dated October 2011.
2 DTSC Human Health Risk Assessment Note 3 - DTSC-Modified Screening Levels (DTSC-SLs), June 2020
3 For constituents which do not have a DTSC-SL established (m,p-xylenes), the Environmental Protection Agency (EPA)
Regional Screening Level (RSL) dated May 2021, was used.
After applying the DTSC attenuation factor of 0.0005 for a future commercial/ industrial land use to
the maximum reported concentrations of the constituents reported to be present beneath the Site
2 Human Health Risk Assessment Note 3 - DTSC-Modified Screening Levels (DTSC-SLs), Table 3. Screening Levels for
Ambient Air, June 2020 Update.
3 Regional Screening Level (RSL) provided by the United States Environmental Protection Agency (EPA) and updated as
of May 2021.
4 Department of Toxic Substances Control (DTSC), State of California Vapor Intrusion Guidance Document - Final, dated
October 2011.
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(TCE, benzene, and m,p-xylenes), the maximum theoretical concentrations of VOCs in indoor air at
the Site are below the commercial/ industrial screening levels (DTSC-SLs or RSLs). 5
6 CONCLUSIONS
Based on the data obtained and reviewed as part of this Assessment, laboratory results, and current
regulatory guidelines, and SCS’ experience and professional judgment, SCS concludes the following:
Background
SCS performed an Assessment consisting of the following to assess possible vapor intrusion
impacts to the Site from an unauthorized release of volatile organic compounds (VOCs) from
the Omar Rendering facility located at 1886 Auto Park Place:
o Advancement and sampling of four soil vapor probes (identified as SV1-5, SV2-5,
SV3-5, and SV4-5), and the collection of five soil vapor samples (including a replicate
sample, SV3 Rep) from 5 feet below grade for analysis of VOCs.
VOCs in Soil Vapor
The VOCs benzene, m,p-xylenes, and trichloroethene (TCE) were reported to be present in soil
vapor beneath the Site.
o Benzene and xylenes are typical constituents of petroleum hydrocarbons, likely from
the former Omar Rendering facility plume.
o TCE is a solvent used in many industrial applications and is also likely from the Omar
Rendering facility plume.
o Based on the low concentrations at which they were observed, it’s unlikely the VOCs
in soil vapor resulted from a point source or significant release at the Site, but more
likely have migrated beneath the Site from the nearby Omar Rendering facility or
another off-Site source.
Because VOCs were reported above the laboratory reporting limits in the soil vapor samples
collected from the Site, a vapor intrusion risk screening (VIRS) was conducted to assess the
5 Note that vapor intrusion standards are currently in a state of transition, and if more conservative standards are
adopted, it is possible that in using the vapor concentration data obtained by SCS that the derived theoretical indoor
air concentrations exceed applicable indoor air screening criteria. For example, if a default attenuation factor of 0.03
for sub-slab soil vapor and “near-source” exterior soil vapor was used, as described in 2015 by USEPA and USEPA and
in February 2020 by DTSC in their Draft Supplemental Guidance: Screening and Evaluating Vapor Intrusion, the
reported maximum benzene concentration at the Site exceed commercial DTSC screening level (U.S. Environmental
Protection Agency Office of Solid Waste and Emergency Response (OSWER) June 2015 – OWSER Technical Guide for
Assessing and Mitigating the Vapor Intrusion Pathway from Subsurface Vapor Sources to Indoor Air). However, the
2015 EPA Guidance indicates attenuation factors for deeper soil vapor data would be expected to be less than those
for sub-slab soil vapor due to additional attenuation through the vadose zone. It is our understanding that, based on
recent projects with DTSC oversight, the DTSC is still allowing the use of the DTSC 2011 Guidance and attenuation
factors. Therefore, based on our experience and because this assessment includes deeper soil vapor sampling depths
than sub-slab depths, the DTSC 2011 Guidance is used herein.
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potential for Significant6 vapor intrusion risk posed to the future industrial occupants at the
Site due to the upward migration of VOCs in soil vapor.
o After applying the Department of Toxic Substances Control (DTSC) attenuation factor
0.0005 for a future commercial/ industrial land use to the maximum reported
concentrations of the constituents reported to be present beneath the Site (TCE,
benzene, and m,p-xylenes), the maximum theoretical concentrations of VOCs in
indoor air at the Site are below the commercial/ industrial screening levels (DTSC-
Modified Screening Levels or EPA Regional Screening Levels).
7 RECOMMENDATION
Based on the data obtained during this Assessment and our conclusions, current regulatory
guidelines, and our experience and professional judgment, SCS recommends no further action for
the Site based related to soil vapor intrusion at this time.
8 REPORT USAGE AND FUTURE SITE CONDITIONS
This Report is intended for the sole usage of the Client and other parties designated by SCS. The
methodology used during this Assessment was in general conformance with the requirements of the
Client and the specifications and limitations presented in the Consulting Agreement (Contract)
between the Client and SCS. This Report contains information from a variety of public and other
sources, and SCS makes no representation or warranty about the accuracy, reliability, suitability, or
completeness of the information. Any use of this Report, whether by the Client or by a third party,
shall be subject to the provisions of the Contract between the Client and SCS. Any misuse of or
reliance upon the Report shall be without risk or liability to SCS.
Assessments are qualitative, not comprehensive, in nature and may not identify all environmental
problems or eliminate all risk. For every property, but especially for properties in older downtown or
urban areas, it is possible for there to be unknown, unreported recognized environmental conditions,
USTs, or other features of concern that might become apparent through demolition, construction, or
excavation activities, etc. In addition, the scope of services for this project was limited to those items
specifically named in the scope of services for this Report. Environmental issues not specifically
addressed in the scope of services for this project are not included in this Report.
Land use, condition of the properties within the Site, and other factors may change over time. The
information and conclusions of this Report are judged to have been relevant at the time the work
described in this Report was conducted. This Report should not be relied upon to represent future
Site conditions unless a qualified consultant familiar with the practice of Phase II Environmental Site
Assessments in the County of San Diego is consulted to assess the necessity of updating this Report.
The property owners at the Site are solely responsible for notifying all governmental agencies and
the public of the existence, release, or disposal of any hazardous materials/wastes or petroleum
products at the Site, whether before, during, or after the performance of SCS’ services. SCS assumes
no responsibility or liability for any claim, loss of property value, damage, or injury that results from
hazardous materials/wastes or petroleum products being present or encountered within the Site.
6 For the purposes of this assessment, significant is defined as greater than one in 1,000,000 excess lifetime cancer
risk or a hazard index of greater than 1.
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Although this Assessment has attempted to assess the likelihood that the Site has been impacted by
a hazardous material/waste release, potential sources of impact may have escaped detection for
reasons that include, but are not limited to, (1) inadequate or inaccurate information rightfully
provided to SCS by third parties, such as public agencies and other outside sources; (2) the limited
scope of this Assessment; and (3) the presence of undetected, unknown, or unreported
environmental releases.
7 LIKELIHOOD STATEMENTS
Statements of “likelihood” have been made in this report. Likelihood statements are based on
professional judgments of SCS. The term “likelihood,” as used herein, pertains to the probability of a
match between the prediction for an event and its actual occurrence. The likelihood statement
assigns a measure for a “degree of belief” for the match between the prediction for the event and
the actual occurrence of the event.
The likelihood statements in this Report are made qualitatively (expressed in words). The qualitative
terms can be approximately related to quantitative percentages. The term “low likelihood” is used by
SCS to approximate a range of 10 to 20 percent; the term “moderate likelihood” refers to an
approximate range of 40 to 60 percent; and the term “high likelihood” refers to an approximate
range of 80 to 90 percent.
8 SPECIAL CONTRACTUAL CONDITIONS BETWEEN USER AND
ENVIRONMENTAL PROFESSIONAL
There were no special contractual conditions between the user of this Assessment, the
environmental professional, and SCS.
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Table
Table 1Soil Vapor Sample Analytical Results for VOCs and Vapor Intrusion Risk Screening517 Shinohara LaneChula Vista, CaliforniaBenzene Trichloroethene (TCE) m,p-XylenesSV1-5 5 7/13/20210.021< 0.020 < 0.10 NDSV2-5 5 7/13/2021 < 0.020 < 0.020 < 0.10 NDSV3-5 5 7/13/20210.021< 0.020 < 0.10 NDSV3-5 Rep 5 7/13/20210.024< 0.020 < 0.10 NDSV4-5 5 7/13/2021< 0.0200.032 0.10ND0.024 0.032 0.10NA24 32 100NA0.012 0.016 0.05NA0.42 2.0 440^NANotes :Soil vapor samples collected by SCS Engineers on July 13, 2021 and analyzed for Volatile Organic Compounds (VOCs) in general accordance with EPA Method 8260SV.Results provided in µg/L= micrograms per liter, converted to micrograms per cubic meter (µg/m3) using the following conversion factor: 1 µg/L = 1,000 µg/m3< : less than the laboratory reporting limit.ND: Not detected above the laboratory reporting limit.Bold = detection above the laboratory limits.1: Maximum soil vapor concentration multiplied by the default Department of Substances Control (DTSC) attenuation factor of 0.0005 for a future commercial building, per Table 2Attenuation Factors for Preliminary Screening Evaluations of the Final Guidance for the Evaluation and Mitigation of Subsurface Vapor Intrusion to Indoor Air (Vapor Intrusion Guidance), prepared by the DTSC and dated October 2011.* Human Health Risk Assessment Note 3 - DTSC-Modified Screening Levels (DTSC-SLs), Table 3 - Screening Levels for Ambient Air. Commercial/Industrial. June 2020 UpdateNA = Not applicable.^ A DTSC-SL has not been established for this constituent. The Environmental Protection Agency (EPA) Regional Screening Level (RSL) dated May 2021, was used for this constituent.DTSC-SLs2 - CommercialSampleOther VOCsDateDepth Predicted Indoor Air Concentrationfor Future Commercial Use1Maximum Site Concentration (µg/L)Maximum Site Concentration (µg/m3) (µg/L)
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Figures
North(Not to scale)Disclaimer: This figure is based on available data. Actualconditions may differ. All locations and dimensions are approximate.FOUR-WAY SITE LOCATION MAPVWP-OP Shinohara Owner, LLC 517 Shinohara LaneChula Vista, CaliforniaReference:U.S.G.S. 7.5 Minute Quadrangle MapImperial Beach, CaliforniaReference:U.S.G.S. 7.5 Minute Quadrangle MapImperial Beach, CaliforniaReference:Google Earth Aerial PhotographChula Vista, California - December 2020REGIONAL SITE LOCATION2-DIMENSIONAL SITE LOCATION3-DIMENSIONAL SITE LOCATIONSITE AERIAL PHOTOGRAPHNorth(Not to scale)North(Not to scale)North(Not to scale)SANTA YSABELNorth IslandNASS a n Di ego B
a
y
MissionBayMissionBayMissionBayBONSALLBONSALLBONSALLLAKESIDESAN DIEGOEL CAJONLA MESAFALLBROOKPALAESCONDIDOSANTEEALPINECARLSBADLEUCADIAENCINITASDEL MARLA JOLLASOLANA BEACHCARDIFF-BY-THE-SEATECATEVISTASAN MARCOSJULIANDEHESACamp Pendleton(U.S.M.C.)FallbrookNaval Weapons Station MCAS MiramarForestClevelandNationalForestAnza-BorregoDesertAnza-BorregoDesertTIJUANACaliforniaMexicoLake HenshawLake SutherlandLake HodgesEl Capitan LakeLoveland ReservoirCorteMadero LakeBarrett LakeLake MorenaLake MurrayLake MurrayLake MurrayLower Otay LakeSweetwaterReservoirLake JenningsSan VicenteLakeLake WohlfordLake PowayDixonLakeCleveland NationalJACUMBACAMPOVALLEY CENTERVALLEY CENTERVALLEY CENTEROCEANSIDERAMONAPINE VALLEYMISSION BEACHPACIFIC BEACHOCEAN BEACHCORONADOIMPERIAL BEACHBORREGO SPRINGSWARNER SPRINGS94675454947878787679POWAY79Cuyamaca RanchoState ParkLEMON GROVELEMON GROVELEMON GROVEJAMULToLos AngelesToPalm SpringsTo San Bernardinoand Las Vegas79371DESCANSOSPRINGVALLEYSPRINGVALLEYSPRINGVALLEYTEMECULAS.D. Int'l Airport(Lindbergh Field)Brown FieldMun. AirportPalomarAirportOceansideMun. AirportMontgomery Field AirportSAN YSIDROToIndioToEl CentroToEl Centro 8 8 5 576781 5805 15 15 15 15125163905Balboa Park 5805NATIONALCITYNATIONALCITYNATIONALCITYRiverside CountySan Diego CountyImperial CountySan Diego CountyOrange County 5949452CHULAVISTACHULAVISTACHULAVISTAFigure 1Project No.:01221156.01Date Drafted:7/2/21OTAY MESABONITABONITABONITAMIRA MESAMIRA MESAMIRA MESAS C S E N G I N E E R SEnvironmental Consultants8799 Balboa Avenue, Suite 290San Diego, California 92123 P A C IF IC O C E A N56 ProjectSiteProjectSiteProjectSiteProjectSiteBrandywine AvenueBrandy wine AvenueBrandywine Avenue
Shinohara LaneShinohara LaneShinohara LaneO lean d er A v e n u e
O lean d er A v e n u e
O lean d er A v e n u e
Figure 2Project No.:01221156.01Disclaimer: This figure is based on available data. Actualconditions may differ. All locations and dimensions are approximate.SITE MAP WITH SOIL VAPOR DATAVWP-OP Shinohara Owner, LLC 517 Shinohara LaneChula Vista, CaliforniaDate Drafted:7/21/21S C S E N G I N E E R SEnvironmental Consultants8799 Balboa Avenue, Suite 290San Diego, California 92123Reference: Google Earth Aerial PhotographChula Vista, California - December 20200 50 100 150Approximate Graphic Scale in Feet1 inch = 100 feetNorthBrandywine AvenueB r a n d y w i n e A v e n u eBrandywine Avenue
Shinohara LaneS h i n o h a r a L a n eShinohara Lane517 Shinohara LaneVacant, Undeveloped Land(Site)517 Shinohara LaneVacant, Undeveloped Land(Site)517 Shinohara LaneVacant, Undeveloped Land(Site)O l e a n d e r A v e n u e
O l e a n d e r A v e n u e
O l e a n d e r A v e n u eSV15’0.021<0.020<0.10NDDepthBenzeneTCEm,p-XylenesOther VOCsSV3/SV3 Rep5’0.021<0.020<0.10ND5’0.024<0.020<0.10NDDepthBenzeneTCEm,p-XylenesOther VOCsSV25’<0.020<0.020<0.10NDDepthBenzeneTCEm,p-XylenesOther VOCsSV45’<0.0200.0320.10NDDepthBenzeneTCEm,p-XylenesOther VOCsLEGENDApproximate Site boundaryApproximate location of soil vapor samples collectedby SCS Engineers on July 13, 2021SV45’<0.0200.0320.10NDDepthBenzeneTCEm,p-XylenesOther VOCsSoil vapor samples, with depth in feet below grade,analyzed for volatile organic compounds (VOCs) byEPA Method 8260SV. Results reported in microgramsper liter (μg/L). Bold font indicates sample resultsabove the laboratory reporting limit. < indicates results less thanthe laboratory reporting limit; number indicates individual analytereporting limit. ND indicates concentration not detected abovelaboratory reporting limits. TCE = trichloroethene
Assessment www.scsengineers.com
Appendix
Laboratory Analytical Report
SCS Engineers - San Diego
San Diego, CA 92123
8799 Balboa Avenue, Suite 290
Luke Montague
Enclosed is the analytical report for the above referenced project. The data herein applies to
samples as received by H&P Mobile Geochemistry, Inc. on 13-Jul-21 which were analyzed in
accordance with the attached Chain of Custody record(s).
The results for all sample analyses and required QA/QC analyses are presented in the following
sections and summarized in the documents:
Sample Summary
Case Narrative (if applicable)
Sample Results
Quality Control Summary
Notes and Definitions / Appendix
Chain of Custody
Sampling Logs (if applicable)
Unless otherwise noted, I certify that all analyses were performed and reviewed in compliance with
our Quality Systems Manual and Standard Operating Procedures. This report shall not be
reproduced, except in full, without the written approval of H &P Mobile Geochemistry, Inc.
We at H&P Mobile Geochemistry, Inc. sincerely appreciate the opportunity to provide analytical
services to you on this project. If you have any questions or concerns regarding this analytical report,
please contact me at your convenience at 760-804-9678.
Sincerely,
20 July 2021
Lisa Eminhizer
Laboratory Director
H&P Mobile Geochemistry, Inc. is certified under the California ELAP and the National Environmental Laboratory Accreditation Conference
NELAC) for the fields of proficiency and analytes listed on those certificates. H&P is approved as an Environmental Testing Laboratory in
accordance with the DoD-ELAP Program and ISO/IEC 17025:2005 programs for the fields of proficiency and analytes included in the certification
process and to the extent offered by the accreditation agency . Unless otherwise noted, accreditation certificate numbers, expiration of certificates,
and scope of accreditation can be found at: www.handpmg.com/about/certifications . Fields of services and analytes contained in this report that
are not listed on the certificates should be considered uncertified or unavailable for certification.
Client Project: 01221156.01/ Shinohara Ln
H&P Project: SCS071321-SB1A
Dear Luke Montague:
P 1.800.834.9888 / 760.804.9678 F 760.804.9159 W handpmg.com
2470 Impala Drive, Carlsbad, CA 92010 & Field Office - Signal Hill, CAQuality. Accuracy. Experience.
Geochemistry Inc.
Mobile
Page 1 of 17
Project:
Project Number:
Project Manager:
Reported:
SCS Engineers - San Diego
8799 Balboa Avenue, Suite 290
SCS071321-SB1A
01221156.01/ Shinohara Ln
Luke MontagueSan Diego, CA 92123 20-Jul-21 08:16
2470 Impala Drive
Carlsbad, CA 92010
760-804-9678 Phone
760-804-9159 Fax
H&P Mobile
Geochemistry Inc.
Sample ID Laboratory ID Matrix Date Sampled
ANALYTICAL REPORT FOR SAMPLES
Date Received
SV4-5 E107035-01 Vapor 13-Jul-21 13-Jul-21
SV3-5 E107035-02 Vapor 13-Jul-21 13-Jul-21
SV3-5 REP E107035-03 Vapor 13-Jul-21 13-Jul-21
SV1-5 E107035-04 Vapor 13-Jul-21 13-Jul-21
SV2-5 E107035-05 Vapor 13-Jul-21 13-Jul-21
Page 2 of 17
Project:
Project Number:
Project Manager:
Reported:
SCS Engineers - San Diego
8799 Balboa Avenue, Suite 290
SCS071321-SB1A
01221156.01/ Shinohara Ln
Luke MontagueSan Diego, CA 92123 20-Jul-21 08:16
2470 Impala Drive
Carlsbad, CA 92010
760-804-9678 Phone
760-804-9159 Fax
H&P Mobile
Geochemistry Inc.
DETECTIONS SUMMARY
Sample ID:Laboratory ID:
Analyte Result Limit Units Method
E107035-01SV4-5
Notes
Reporting
Trichloroethene 0.032 0.020 ug/l H&P 8260SV
m,p-Xylene 0.10 0.10 ug/l H&P 8260SV
Sample ID:Laboratory ID:
Analyte Result Limit Units Method
E107035-02SV3-5
Notes
Reporting
Benzene 0.021 0.020 ug/l H&P 8260SV
Sample ID:Laboratory ID:
Analyte Result Limit Units Method
E107035-03SV3-5 REP
Notes
Reporting
Benzene 0.024 0.020 ug/l H&P 8260SV
Sample ID:Laboratory ID:
Analyte Result Limit Units Method
E107035-04SV1-5
Notes
Reporting
Benzene 0.021 0.020 ug/l H&P 8260SV
Sample ID:Laboratory ID:
Analyte Result Limit Units Method
E107035-05SV2-5
Notes
Reporting
No Detections Reported
Page 3 of 17
Project:
Project Number:
Project Manager:
Reported:
SCS Engineers - San Diego
8799 Balboa Avenue, Suite 290
SCS071321-SB1A
01221156.01/ Shinohara Ln
Luke MontagueSan Diego, CA 92123 20-Jul-21 08:16
2470 Impala Drive
Carlsbad, CA 92010
760-804-9678 Phone
760-804-9159 Fax
H&P Mobile
Geochemistry Inc.
Volatile Organic Compounds by H&P 8260SV
H&P Mobile Geochemistry, Inc.
Result Analyte Limit
Reporting
Units
Dilution
Batch Prepared Analyzed Method Notes Factor
SV4-5 (E107035-01) Vapor Sampled: 13-Jul-21 Received: 13-Jul-21
H&P 8260SV13-Jul-21 13-Jul-21ug/l EG113070.011,1-Difluoroethane (LCC)0.10ND
""""""Dichlorodifluoromethane (F12)0.10ND
""""""Chloromethane 0.10ND
""""""Vinyl chloride 0.010ND
""""""Bromomethane 0.10ND
""""""Chloroethane 0.10ND
""""""Trichlorofluoromethane (F11)0.10ND
""""""1,1-Dichloroethene 0.10ND
""""""1,1,2 Trichlorotrifluoroethane (F113)0.10ND
""""""Methylene chloride (Dichloromethane)0.10ND
""""""Methyl tertiary-butyl ether (MTBE)0.10ND
""""""trans-1,2-Dichloroethene 0.10ND
""""""1,1-Dichloroethane 0.10ND
""""""2,2-Dichloropropane 0.10ND
""""""cis-1,2-Dichloroethene 0.10ND
""""""Chloroform 0.020ND
""""""Bromochloromethane 0.10ND
""""""1,1,1-Trichloroethane 0.10ND
""""""1,1-Dichloropropene 0.10ND
""""""Carbon tetrachloride 0.020ND
""""""1,2-Dichloroethane (EDC)0.020ND
""""""Benzene 0.020ND
"""""Trichloroethene "0.0200.032
""""""1,2-Dichloropropane 0.10ND
""""""Bromodichloromethane 0.10ND
""""""Dibromomethane 0.10ND
""""""cis-1,3-Dichloropropene 0.10ND
""""""Toluene 0.20ND
""""""trans-1,3-Dichloropropene 0.10ND
""""""1,1,2-Trichloroethane 0.10ND
""""""1,2-Dibromoethane (EDB)0.10ND
""""""1,3-Dichloropropane 0.10ND
""""""Tetrachloroethene 0.020ND
""""""Dibromochloromethane 0.10ND
""""""Chlorobenzene 0.020ND
""""""Ethylbenzene 0.10ND
""""""1,1,1,2-Tetrachloroethane 0.10ND
"""""m,p-Xylene "0.100.10
Page 4 of 17
Project:
Project Number:
Project Manager:
Reported:
SCS Engineers - San Diego
8799 Balboa Avenue, Suite 290
SCS071321-SB1A
01221156.01/ Shinohara Ln
Luke MontagueSan Diego, CA 92123 20-Jul-21 08:16
2470 Impala Drive
Carlsbad, CA 92010
760-804-9678 Phone
760-804-9159 Fax
H&P Mobile
Geochemistry Inc.
Volatile Organic Compounds by H&P 8260SV
H&P Mobile Geochemistry, Inc.
Result Analyte Limit
Reporting
Units
Dilution
Batch Prepared Analyzed Method Notes Factor
SV4-5 (E107035-01) Vapor Sampled: 13-Jul-21 Received: 13-Jul-21
H&P 8260SV13-Jul-21 13-Jul-21ug/l EG113070.01o-Xylene 0.10ND
""""""Styrene 0.10ND
""""""Bromoform 0.10ND
""""""Isopropylbenzene (Cumene)0.10ND
""""""1,1,2,2-Tetrachloroethane 0.10ND
""""""1,2,3-Trichloropropane 0.10ND
""""""n-Propylbenzene 0.10ND
""""""Bromobenzene 0.10ND
""""""1,3,5-Trimethylbenzene 0.10ND
""""""2-Chlorotoluene 0.10ND
""""""4-Chlorotoluene 0.10ND
""""""tert-Butylbenzene 0.10ND
""""""1,2,4-Trimethylbenzene 0.10ND
""""""sec-Butylbenzene 0.10ND
""""""p-Isopropyltoluene 0.10ND
""""""1,3-Dichlorobenzene 0.10ND
""""""1,4-Dichlorobenzene 0.10ND
""""""n-Butylbenzene 0.10ND
""""""1,2-Dichlorobenzene 0.10ND
""""""1,2-Dibromo-3-chloropropane 1.0ND
""""""1,2,4-Trichlorobenzene 0.10ND
""""""Hexachlorobutadiene 0.10ND
""""""Naphthalene 0.020ND
""""""1,2,3-Trichlorobenzene 0.10ND
""""102 %75-125Surrogate: Dibromofluoromethane
""""97.9 %75-125Surrogate: 1,2-Dichloroethane-d4
""""94.0 %75-125Surrogate: Toluene-d8
""""102 %75-125Surrogate: 4-Bromofluorobenzene
Page 5 of 17
Project:
Project Number:
Project Manager:
Reported:
SCS Engineers - San Diego
8799 Balboa Avenue, Suite 290
SCS071321-SB1A
01221156.01/ Shinohara Ln
Luke MontagueSan Diego, CA 92123 20-Jul-21 08:16
2470 Impala Drive
Carlsbad, CA 92010
760-804-9678 Phone
760-804-9159 Fax
H&P Mobile
Geochemistry Inc.
Volatile Organic Compounds by H&P 8260SV
H&P Mobile Geochemistry, Inc.
Result Analyte Limit
Reporting
Units
Dilution
Batch Prepared Analyzed Method Notes Factor
SV3-5 (E107035-02) Vapor Sampled: 13-Jul-21 Received: 13-Jul-21
H&P 8260SV13-Jul-21 13-Jul-21ug/l EG113070.011,1-Difluoroethane (LCC)0.10ND
""""""Dichlorodifluoromethane (F12)0.10ND
""""""Chloromethane 0.10ND
""""""Vinyl chloride 0.010ND
""""""Bromomethane 0.10ND
""""""Chloroethane 0.10ND
""""""Trichlorofluoromethane (F11)0.10ND
""""""1,1-Dichloroethene 0.10ND
""""""1,1,2 Trichlorotrifluoroethane (F113)0.10ND
""""""Methylene chloride (Dichloromethane)0.10ND
""""""Methyl tertiary-butyl ether (MTBE)0.10ND
""""""trans-1,2-Dichloroethene 0.10ND
""""""1,1-Dichloroethane 0.10ND
""""""2,2-Dichloropropane 0.10ND
""""""cis-1,2-Dichloroethene 0.10ND
""""""Chloroform 0.020ND
""""""Bromochloromethane 0.10ND
""""""1,1,1-Trichloroethane 0.10ND
""""""1,1-Dichloropropene 0.10ND
""""""Carbon tetrachloride 0.020ND
""""""1,2-Dichloroethane (EDC)0.020ND
"""""Benzene "0.0200.021
""""""Trichloroethene 0.020ND
""""""1,2-Dichloropropane 0.10ND
""""""Bromodichloromethane 0.10ND
""""""Dibromomethane 0.10ND
""""""cis-1,3-Dichloropropene 0.10ND
""""""Toluene 0.20ND
""""""trans-1,3-Dichloropropene 0.10ND
""""""1,1,2-Trichloroethane 0.10ND
""""""1,2-Dibromoethane (EDB)0.10ND
""""""1,3-Dichloropropane 0.10ND
""""""Tetrachloroethene 0.020ND
""""""Dibromochloromethane 0.10ND
""""""Chlorobenzene 0.020ND
""""""Ethylbenzene 0.10ND
""""""1,1,1,2-Tetrachloroethane 0.10ND
""""""m,p-Xylene 0.10ND
Page 6 of 17
Project:
Project Number:
Project Manager:
Reported:
SCS Engineers - San Diego
8799 Balboa Avenue, Suite 290
SCS071321-SB1A
01221156.01/ Shinohara Ln
Luke MontagueSan Diego, CA 92123 20-Jul-21 08:16
2470 Impala Drive
Carlsbad, CA 92010
760-804-9678 Phone
760-804-9159 Fax
H&P Mobile
Geochemistry Inc.
Volatile Organic Compounds by H&P 8260SV
H&P Mobile Geochemistry, Inc.
Result Analyte Limit
Reporting
Units
Dilution
Batch Prepared Analyzed Method Notes Factor
SV3-5 (E107035-02) Vapor Sampled: 13-Jul-21 Received: 13-Jul-21
H&P 8260SV13-Jul-21 13-Jul-21ug/l EG113070.01o-Xylene 0.10ND
""""""Styrene 0.10ND
""""""Bromoform 0.10ND
""""""Isopropylbenzene (Cumene)0.10ND
""""""1,1,2,2-Tetrachloroethane 0.10ND
""""""1,2,3-Trichloropropane 0.10ND
""""""n-Propylbenzene 0.10ND
""""""Bromobenzene 0.10ND
""""""1,3,5-Trimethylbenzene 0.10ND
""""""2-Chlorotoluene 0.10ND
""""""4-Chlorotoluene 0.10ND
""""""tert-Butylbenzene 0.10ND
""""""1,2,4-Trimethylbenzene 0.10ND
""""""sec-Butylbenzene 0.10ND
""""""p-Isopropyltoluene 0.10ND
""""""1,3-Dichlorobenzene 0.10ND
""""""1,4-Dichlorobenzene 0.10ND
""""""n-Butylbenzene 0.10ND
""""""1,2-Dichlorobenzene 0.10ND
""""""1,2-Dibromo-3-chloropropane 1.0ND
""""""1,2,4-Trichlorobenzene 0.10ND
""""""Hexachlorobutadiene 0.10ND
""""""Naphthalene 0.020ND
""""""1,2,3-Trichlorobenzene 0.10ND
""""106 %75-125Surrogate: Dibromofluoromethane
""""95.6 %75-125Surrogate: 1,2-Dichloroethane-d4
""""93.5 %75-125Surrogate: Toluene-d8
""""97.9 %75-125Surrogate: 4-Bromofluorobenzene
Page 7 of 17
Project:
Project Number:
Project Manager:
Reported:
SCS Engineers - San Diego
8799 Balboa Avenue, Suite 290
SCS071321-SB1A
01221156.01/ Shinohara Ln
Luke MontagueSan Diego, CA 92123 20-Jul-21 08:16
2470 Impala Drive
Carlsbad, CA 92010
760-804-9678 Phone
760-804-9159 Fax
H&P Mobile
Geochemistry Inc.
Volatile Organic Compounds by H&P 8260SV
H&P Mobile Geochemistry, Inc.
Result Analyte Limit
Reporting
Units
Dilution
Batch Prepared Analyzed Method Notes Factor
SV3-5 REP (E107035-03) Vapor Sampled: 13-Jul-21 Received: 13-Jul-21
H&P 8260SV13-Jul-21 13-Jul-21ug/l EG113070.011,1-Difluoroethane (LCC)0.10ND
""""""Dichlorodifluoromethane (F12)0.10ND
""""""Chloromethane 0.10ND
""""""Vinyl chloride 0.010ND
""""""Bromomethane 0.10ND
""""""Chloroethane 0.10ND
""""""Trichlorofluoromethane (F11)0.10ND
""""""1,1-Dichloroethene 0.10ND
""""""1,1,2 Trichlorotrifluoroethane (F113)0.10ND
""""""Methylene chloride (Dichloromethane)0.10ND
""""""Methyl tertiary-butyl ether (MTBE)0.10ND
""""""trans-1,2-Dichloroethene 0.10ND
""""""1,1-Dichloroethane 0.10ND
""""""2,2-Dichloropropane 0.10ND
""""""cis-1,2-Dichloroethene 0.10ND
""""""Chloroform 0.020ND
""""""Bromochloromethane 0.10ND
""""""1,1,1-Trichloroethane 0.10ND
""""""1,1-Dichloropropene 0.10ND
""""""Carbon tetrachloride 0.020ND
""""""1,2-Dichloroethane (EDC)0.020ND
"""""Benzene "0.0200.024
""""""Trichloroethene 0.020ND
""""""1,2-Dichloropropane 0.10ND
""""""Bromodichloromethane 0.10ND
""""""Dibromomethane 0.10ND
""""""cis-1,3-Dichloropropene 0.10ND
""""""Toluene 0.20ND
""""""trans-1,3-Dichloropropene 0.10ND
""""""1,1,2-Trichloroethane 0.10ND
""""""1,2-Dibromoethane (EDB)0.10ND
""""""1,3-Dichloropropane 0.10ND
""""""Tetrachloroethene 0.020ND
""""""Dibromochloromethane 0.10ND
""""""Chlorobenzene 0.020ND
""""""Ethylbenzene 0.10ND
""""""1,1,1,2-Tetrachloroethane 0.10ND
""""""m,p-Xylene 0.10ND
Page 8 of 17
Project:
Project Number:
Project Manager:
Reported:
SCS Engineers - San Diego
8799 Balboa Avenue, Suite 290
SCS071321-SB1A
01221156.01/ Shinohara Ln
Luke MontagueSan Diego, CA 92123 20-Jul-21 08:16
2470 Impala Drive
Carlsbad, CA 92010
760-804-9678 Phone
760-804-9159 Fax
H&P Mobile
Geochemistry Inc.
Volatile Organic Compounds by H&P 8260SV
H&P Mobile Geochemistry, Inc.
Result Analyte Limit
Reporting
Units
Dilution
Batch Prepared Analyzed Method Notes Factor
SV3-5 REP (E107035-03) Vapor Sampled: 13-Jul-21 Received: 13-Jul-21
H&P 8260SV13-Jul-21 13-Jul-21ug/l EG113070.01o-Xylene 0.10ND
""""""Styrene 0.10ND
""""""Bromoform 0.10ND
""""""Isopropylbenzene (Cumene)0.10ND
""""""1,1,2,2-Tetrachloroethane 0.10ND
""""""1,2,3-Trichloropropane 0.10ND
""""""n-Propylbenzene 0.10ND
""""""Bromobenzene 0.10ND
""""""1,3,5-Trimethylbenzene 0.10ND
""""""2-Chlorotoluene 0.10ND
""""""4-Chlorotoluene 0.10ND
""""""tert-Butylbenzene 0.10ND
""""""1,2,4-Trimethylbenzene 0.10ND
""""""sec-Butylbenzene 0.10ND
""""""p-Isopropyltoluene 0.10ND
""""""1,3-Dichlorobenzene 0.10ND
""""""1,4-Dichlorobenzene 0.10ND
""""""n-Butylbenzene 0.10ND
""""""1,2-Dichlorobenzene 0.10ND
""""""1,2-Dibromo-3-chloropropane 1.0ND
""""""1,2,4-Trichlorobenzene 0.10ND
""""""Hexachlorobutadiene 0.10ND
""""""Naphthalene 0.020ND
""""""1,2,3-Trichlorobenzene 0.10ND
""""104 %75-125Surrogate: Dibromofluoromethane
""""96.6 %75-125Surrogate: 1,2-Dichloroethane-d4
""""93.6 %75-125Surrogate: Toluene-d8
""""100 %75-125Surrogate: 4-Bromofluorobenzene
Page 9 of 17
Project:
Project Number:
Project Manager:
Reported:
SCS Engineers - San Diego
8799 Balboa Avenue, Suite 290
SCS071321-SB1A
01221156.01/ Shinohara Ln
Luke MontagueSan Diego, CA 92123 20-Jul-21 08:16
2470 Impala Drive
Carlsbad, CA 92010
760-804-9678 Phone
760-804-9159 Fax
H&P Mobile
Geochemistry Inc.
Volatile Organic Compounds by H&P 8260SV
H&P Mobile Geochemistry, Inc.
Result Analyte Limit
Reporting
Units
Dilution
Batch Prepared Analyzed Method Notes Factor
SV1-5 (E107035-04) Vapor Sampled: 13-Jul-21 Received: 13-Jul-21
H&P 8260SV13-Jul-21 13-Jul-21ug/l EG113070.011,1-Difluoroethane (LCC)0.10ND
""""""Dichlorodifluoromethane (F12)0.10ND
""""""Chloromethane 0.10ND
""""""Vinyl chloride 0.010ND
""""""Bromomethane 0.10ND
""""""Chloroethane 0.10ND
""""""Trichlorofluoromethane (F11)0.10ND
""""""1,1-Dichloroethene 0.10ND
""""""1,1,2 Trichlorotrifluoroethane (F113)0.10ND
""""""Methylene chloride (Dichloromethane)0.10ND
""""""Methyl tertiary-butyl ether (MTBE)0.10ND
""""""trans-1,2-Dichloroethene 0.10ND
""""""1,1-Dichloroethane 0.10ND
""""""2,2-Dichloropropane 0.10ND
""""""cis-1,2-Dichloroethene 0.10ND
""""""Chloroform 0.020ND
""""""Bromochloromethane 0.10ND
""""""1,1,1-Trichloroethane 0.10ND
""""""1,1-Dichloropropene 0.10ND
""""""Carbon tetrachloride 0.020ND
""""""1,2-Dichloroethane (EDC)0.020ND
"""""Benzene "0.0200.021
""""""Trichloroethene 0.020ND
""""""1,2-Dichloropropane 0.10ND
""""""Bromodichloromethane 0.10ND
""""""Dibromomethane 0.10ND
""""""cis-1,3-Dichloropropene 0.10ND
""""""Toluene 0.20ND
""""""trans-1,3-Dichloropropene 0.10ND
""""""1,1,2-Trichloroethane 0.10ND
""""""1,2-Dibromoethane (EDB)0.10ND
""""""1,3-Dichloropropane 0.10ND
""""""Tetrachloroethene 0.020ND
""""""Dibromochloromethane 0.10ND
""""""Chlorobenzene 0.020ND
""""""Ethylbenzene 0.10ND
""""""1,1,1,2-Tetrachloroethane 0.10ND
""""""m,p-Xylene 0.10ND
Page 10 of 17
Project:
Project Number:
Project Manager:
Reported:
SCS Engineers - San Diego
8799 Balboa Avenue, Suite 290
SCS071321-SB1A
01221156.01/ Shinohara Ln
Luke MontagueSan Diego, CA 92123 20-Jul-21 08:16
2470 Impala Drive
Carlsbad, CA 92010
760-804-9678 Phone
760-804-9159 Fax
H&P Mobile
Geochemistry Inc.
Volatile Organic Compounds by H&P 8260SV
H&P Mobile Geochemistry, Inc.
Result Analyte Limit
Reporting
Units
Dilution
Batch Prepared Analyzed Method Notes Factor
SV1-5 (E107035-04) Vapor Sampled: 13-Jul-21 Received: 13-Jul-21
H&P 8260SV13-Jul-21 13-Jul-21ug/l EG113070.01o-Xylene 0.10ND
""""""Styrene 0.10ND
""""""Bromoform 0.10ND
""""""Isopropylbenzene (Cumene)0.10ND
""""""1,1,2,2-Tetrachloroethane 0.10ND
""""""1,2,3-Trichloropropane 0.10ND
""""""n-Propylbenzene 0.10ND
""""""Bromobenzene 0.10ND
""""""1,3,5-Trimethylbenzene 0.10ND
""""""2-Chlorotoluene 0.10ND
""""""4-Chlorotoluene 0.10ND
""""""tert-Butylbenzene 0.10ND
""""""1,2,4-Trimethylbenzene 0.10ND
""""""sec-Butylbenzene 0.10ND
""""""p-Isopropyltoluene 0.10ND
""""""1,3-Dichlorobenzene 0.10ND
""""""1,4-Dichlorobenzene 0.10ND
""""""n-Butylbenzene 0.10ND
""""""1,2-Dichlorobenzene 0.10ND
""""""1,2-Dibromo-3-chloropropane 1.0ND
""""""1,2,4-Trichlorobenzene 0.10ND
""""""Hexachlorobutadiene 0.10ND
""""""Naphthalene 0.020ND
""""""1,2,3-Trichlorobenzene 0.10ND
""""99.9 %75-125Surrogate: Dibromofluoromethane
""""97.8 %75-125Surrogate: 1,2-Dichloroethane-d4
""""93.5 %75-125Surrogate: Toluene-d8
""""107 %75-125Surrogate: 4-Bromofluorobenzene
Page 11 of 17
Project:
Project Number:
Project Manager:
Reported:
SCS Engineers - San Diego
8799 Balboa Avenue, Suite 290
SCS071321-SB1A
01221156.01/ Shinohara Ln
Luke MontagueSan Diego, CA 92123 20-Jul-21 08:16
2470 Impala Drive
Carlsbad, CA 92010
760-804-9678 Phone
760-804-9159 Fax
H&P Mobile
Geochemistry Inc.
Volatile Organic Compounds by H&P 8260SV
H&P Mobile Geochemistry, Inc.
Result Analyte Limit
Reporting
Units
Dilution
Batch Prepared Analyzed Method Notes Factor
SV2-5 (E107035-05) Vapor Sampled: 13-Jul-21 Received: 13-Jul-21
H&P 8260SV13-Jul-21 13-Jul-21ug/l EG113070.011,1-Difluoroethane (LCC)0.10ND
""""""Dichlorodifluoromethane (F12)0.10ND
""""""Chloromethane 0.10ND
""""""Vinyl chloride 0.010ND
""""""Bromomethane 0.10ND
""""""Chloroethane 0.10ND
""""""Trichlorofluoromethane (F11)0.10ND
""""""1,1-Dichloroethene 0.10ND
""""""1,1,2 Trichlorotrifluoroethane (F113)0.10ND
""""""Methylene chloride (Dichloromethane)0.10ND
""""""Methyl tertiary-butyl ether (MTBE)0.10ND
""""""trans-1,2-Dichloroethene 0.10ND
""""""1,1-Dichloroethane 0.10ND
""""""2,2-Dichloropropane 0.10ND
""""""cis-1,2-Dichloroethene 0.10ND
""""""Chloroform 0.020ND
""""""Bromochloromethane 0.10ND
""""""1,1,1-Trichloroethane 0.10ND
""""""1,1-Dichloropropene 0.10ND
""""""Carbon tetrachloride 0.020ND
""""""1,2-Dichloroethane (EDC)0.020ND
""""""Benzene 0.020ND
""""""Trichloroethene 0.020ND
""""""1,2-Dichloropropane 0.10ND
""""""Bromodichloromethane 0.10ND
""""""Dibromomethane 0.10ND
""""""cis-1,3-Dichloropropene 0.10ND
""""""Toluene 0.20ND
""""""trans-1,3-Dichloropropene 0.10ND
""""""1,1,2-Trichloroethane 0.10ND
""""""1,2-Dibromoethane (EDB)0.10ND
""""""1,3-Dichloropropane 0.10ND
""""""Tetrachloroethene 0.020ND
""""""Dibromochloromethane 0.10ND
""""""Chlorobenzene 0.020ND
""""""Ethylbenzene 0.10ND
""""""1,1,1,2-Tetrachloroethane 0.10ND
""""""m,p-Xylene 0.10ND
Page 12 of 17
Project:
Project Number:
Project Manager:
Reported:
SCS Engineers - San Diego
8799 Balboa Avenue, Suite 290
SCS071321-SB1A
01221156.01/ Shinohara Ln
Luke MontagueSan Diego, CA 92123 20-Jul-21 08:16
2470 Impala Drive
Carlsbad, CA 92010
760-804-9678 Phone
760-804-9159 Fax
H&P Mobile
Geochemistry Inc.
Volatile Organic Compounds by H&P 8260SV
H&P Mobile Geochemistry, Inc.
Result Analyte Limit
Reporting
Units
Dilution
Batch Prepared Analyzed Method Notes Factor
SV2-5 (E107035-05) Vapor Sampled: 13-Jul-21 Received: 13-Jul-21
H&P 8260SV13-Jul-21 13-Jul-21ug/l EG113070.01o-Xylene 0.10ND
""""""Styrene 0.10ND
""""""Bromoform 0.10ND
""""""Isopropylbenzene (Cumene)0.10ND
""""""1,1,2,2-Tetrachloroethane 0.10ND
""""""1,2,3-Trichloropropane 0.10ND
""""""n-Propylbenzene 0.10ND
""""""Bromobenzene 0.10ND
""""""1,3,5-Trimethylbenzene 0.10ND
""""""2-Chlorotoluene 0.10ND
""""""4-Chlorotoluene 0.10ND
""""""tert-Butylbenzene 0.10ND
""""""1,2,4-Trimethylbenzene 0.10ND
""""""sec-Butylbenzene 0.10ND
""""""p-Isopropyltoluene 0.10ND
""""""1,3-Dichlorobenzene 0.10ND
""""""1,4-Dichlorobenzene 0.10ND
""""""n-Butylbenzene 0.10ND
""""""1,2-Dichlorobenzene 0.10ND
""""""1,2-Dibromo-3-chloropropane 1.0ND
""""""1,2,4-Trichlorobenzene 0.10ND
""""""Hexachlorobutadiene 0.10ND
""""""Naphthalene 0.020ND
""""""1,2,3-Trichlorobenzene 0.10ND
""""100 %75-125Surrogate: Dibromofluoromethane
""""97.5 %75-125Surrogate: 1,2-Dichloroethane-d4
""""93.4 %75-125Surrogate: Toluene-d8
""""98.9 %75-125Surrogate: 4-Bromofluorobenzene
Page 13 of 17
Project:
Project Number:
Project Manager:
Reported:
SCS Engineers - San Diego
8799 Balboa Avenue, Suite 290
SCS071321-SB1A
01221156.01/ Shinohara Ln
Luke MontagueSan Diego, CA 92123 20-Jul-21 08:16
2470 Impala Drive
Carlsbad, CA 92010
760-804-9678 Phone
760-804-9159 Fax
H&P Mobile
Geochemistry Inc.
Result Limit
Reporting
Units Level
Spike
Result
Source
%REC
%REC
Limits RPD
RPD
Limit Notes Analyte
Volatile Organic Compounds by H&P 8260SV - Quality Control
H&P Mobile Geochemistry, Inc.
Batch EG11307 - EPA 5030
Blank (EG11307-BLK1)Prepared & Analyzed: 13-Jul-21
1,1-Difluoroethane (LCC)ug/l0.10ND
Dichlorodifluoromethane (F12)"0.10ND
Chloromethane "0.10ND
Vinyl chloride "0.010ND
Bromomethane "0.10ND
Chloroethane "0.10ND
Trichlorofluoromethane (F11)"0.10ND
1,1-Dichloroethene "0.10ND
1,1,2 Trichlorotrifluoroethane (F113)"0.10ND
Methylene chloride (Dichloromethane)"0.10ND
Methyl tertiary-butyl ether (MTBE)"0.10ND
trans-1,2-Dichloroethene "0.10ND
1,1-Dichloroethane "0.10ND
2,2-Dichloropropane "0.10ND
cis-1,2-Dichloroethene "0.10ND
Chloroform "0.020ND
Bromochloromethane "0.10ND
1,1,1-Trichloroethane "0.10ND
1,1-Dichloropropene "0.10ND
Carbon tetrachloride "0.020ND
1,2-Dichloroethane (EDC)"0.020ND
Benzene "0.020ND
Trichloroethene "0.020ND
1,2-Dichloropropane "0.10ND
Bromodichloromethane "0.10ND
Dibromomethane "0.10ND
cis-1,3-Dichloropropene "0.10ND
Toluene "0.20ND
trans-1,3-Dichloropropene "0.10ND
1,1,2-Trichloroethane "0.10ND
1,2-Dibromoethane (EDB)"0.10ND
1,3-Dichloropropane "0.10ND
Tetrachloroethene "0.020ND
Dibromochloromethane "0.10ND
Page 14 of 17
Project:
Project Number:
Project Manager:
Reported:
SCS Engineers - San Diego
8799 Balboa Avenue, Suite 290
SCS071321-SB1A
01221156.01/ Shinohara Ln
Luke MontagueSan Diego, CA 92123 20-Jul-21 08:16
2470 Impala Drive
Carlsbad, CA 92010
760-804-9678 Phone
760-804-9159 Fax
H&P Mobile
Geochemistry Inc.
Result Limit
Reporting
Units Level
Spike
Result
Source
%REC
%REC
Limits RPD
RPD
Limit Notes Analyte
Volatile Organic Compounds by H&P 8260SV - Quality Control
H&P Mobile Geochemistry, Inc.
Batch EG11307 - EPA 5030
Blank (EG11307-BLK1)Prepared & Analyzed: 13-Jul-21
Chlorobenzene ug/l0.020ND
Ethylbenzene "0.10ND
1,1,1,2-Tetrachloroethane "0.10ND
m,p-Xylene "0.10ND
o-Xylene "0.10ND
Styrene "0.10ND
Bromoform "0.10ND
Isopropylbenzene (Cumene)"0.10ND
1,1,2,2-Tetrachloroethane "0.10ND
1,2,3-Trichloropropane "0.10ND
n-Propylbenzene "0.10ND
Bromobenzene "0.10ND
1,3,5-Trimethylbenzene "0.10ND
2-Chlorotoluene "0.10ND
4-Chlorotoluene "0.10ND
tert-Butylbenzene "0.10ND
1,2,4-Trimethylbenzene "0.10ND
sec-Butylbenzene "0.10ND
p-Isopropyltoluene "0.10ND
1,3-Dichlorobenzene "0.10ND
1,4-Dichlorobenzene "0.10ND
n-Butylbenzene "0.10ND
1,2-Dichlorobenzene "0.10ND
1,2-Dibromo-3-chloropropane "1.0ND
1,2,4-Trichlorobenzene "0.10ND
Hexachlorobutadiene "0.10ND
Naphthalene "0.020ND
1,2,3-Trichlorobenzene "0.10ND
"0.500 75-125Surrogate: Dibromofluoromethane 1120.559
"0.500 75-125Surrogate: 1,2-Dichloroethane-d4 1100.552
"0.500 75-125Surrogate: Toluene-d8 99.20.496
"0.500 75-125Surrogate: 4-Bromofluorobenzene 1100.548
Page 15 of 17
Project:
Project Number:
Project Manager:
Reported:
SCS Engineers - San Diego
8799 Balboa Avenue, Suite 290
SCS071321-SB1A
01221156.01/ Shinohara Ln
Luke MontagueSan Diego, CA 92123 20-Jul-21 08:16
2470 Impala Drive
Carlsbad, CA 92010
760-804-9678 Phone
760-804-9159 Fax
H&P Mobile
Geochemistry Inc.
Result Limit
Reporting
Units Level
Spike
Result
Source
%REC
%REC
Limits RPD
RPD
Limit Notes Analyte
Volatile Organic Compounds by H&P 8260SV - Quality Control
H&P Mobile Geochemistry, Inc.
Batch EG11307 - EPA 5030
LCS (EG11307-BS1)Prepared & Analyzed: 13-Jul-21
Dichlorodifluoromethane (F12)ug/l 5.00 QL-1L70-13064.50.503.2
Vinyl chloride "5.00 70-13089.50.0504.5
Chloroethane "5.00 70-13093.70.504.7
Trichlorofluoromethane (F11)"5.00 70-13093.20.504.7
1,1-Dichloroethene "5.00 70-13098.40.504.9
1,1,2 Trichlorotrifluoroethane (F113)"5.00 70-13096.50.504.8
Methylene chloride (Dichloromethane)"5.00 70-13097.90.504.9
trans-1,2-Dichloroethene "5.00 70-1301020.505.1
1,1-Dichloroethane "5.00 70-13094.20.504.7
cis-1,2-Dichloroethene "5.00 70-13097.10.504.9
Chloroform "5.00 70-13092.70.104.6
1,1,1-Trichloroethane "5.00 70-13086.80.504.3
Carbon tetrachloride "5.00 70-13092.60.104.6
1,2-Dichloroethane (EDC)"5.00 70-13098.60.104.9
Benzene "5.00 70-13088.20.104.4
Trichloroethene "5.00 70-13089.20.104.5
Toluene "5.00 70-13087.11.04.4
1,1,2-Trichloroethane "5.00 70-13095.30.504.8
Tetrachloroethene "5.00 70-13092.50.104.6
Ethylbenzene "5.00 70-13092.30.504.6
1,1,1,2-Tetrachloroethane "5.00 70-13090.60.504.5
m,p-Xylene "10.0 70-13094.40.509.4
o-Xylene "5.00 70-13090.20.504.5
1,1,2,2-Tetrachloroethane "5.00 70-1301020.505.1
"2.50 75-125Surrogate: Dibromofluoromethane 1032.57
"2.50 75-125Surrogate: 1,2-Dichloroethane-d4 98.62.46
"2.50 75-125Surrogate: Toluene-d8 97.12.43
"2.50 75-125Surrogate: 4-Bromofluorobenzene 1052.62
Page 16 of 17
Project:
Project Number:
Project Manager:
Reported:
SCS Engineers - San Diego
8799 Balboa Avenue, Suite 290
SCS071321-SB1A
01221156.01/ Shinohara Ln
Luke MontagueSan Diego, CA 92123 20-Jul-21 08:16
2470 Impala Drive
Carlsbad, CA 92010
760-804-9678 Phone
760-804-9159 Fax
H&P Mobile
Geochemistry Inc.
Notes and Definitions
QL-1L The LCS and/or LCSD recoveries fell below the established control specifications for this analyte. Any result for this compound is
qualified and should be considered biased low.
Percent Recovery
Relative Percent DifferenceRPD
%REC
Method Detection LimitMDL
Analyte NOT DETECTED at or above the reporting limitND
Leak Check CompoundLCC
Appendix
H&P Mobile Geochemistry, Inc. is approved as an Environmental Testing Laboratory and Mobile Laboratory in accordance with the DoD -ELAP Program
and ISO/IEC 17025:2005 programs through PJLA, accreditation number 69070 for EPA Method TO-15, EPA Method 8260B and H&P 8260SV.
H&P is approved by the State of California as an Environmental Laboratory and Mobile Laboratory in conformance with the Environmental Laboratory
Accreditation Program (ELAP) for the category of Volatile and Semi -Volatile Organic Chemistry of Hazardous Waste , certification numbers 2740, 2741,
2743 & 2745.
H&P is approved by the State of Louisiana Department of Environmental Quality under the National Environmental Laboratory Accreditation Conference
(NELAC) certification number 04138
The complete list of stationary and mobile laboratory certifications along with the fields of testing (FOTs) and analyte lists are available at
www.handpmg.com/about/certifications.
All soil results are reported in wet weight.
Page 17 of 17
Mobile •
Z Geochemistry, Inc.
2470 Impala Drive, Carlsbad, CA 92010
Field Office - Signal Hill, CA
W handpmg.com E info@handpmg.com
P 760.804.9678 F 760.804.9159
VAPOR / AIR Chain of Custody DATE:
Page of
Lab Client and Project Information Sample Receipt (Lab Use Only)
Lab Client/Consultant:
c
C; r;'.AJG i 0.(243i (15 Project Name / #: 0 1,9 (-6\ di DI
Date Rec'd: 3 if Controll:721u 4 70 . O 1
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Lab Work Order # ) Q C) -z
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Phone Number: 43 --c.. 9 _ 74,_ ._. o.--i____ Receipt Gauge ID: Temp:
Reporting Requirements /Turnaround Time Sampler Information Outside Lab:
Standard Report q Level Ill q Level IV
q Excel EDD q Other EDD:
Et-Standard
report,
Rush
7 days for preliminary
10 days for final report)
specify):
Sampler(s): / /06_0 Receipt Notes/Tracking #:
Lab PM Initials:
Signature:
q CA Geotracker Global ID: Date: 7 1, g j 7,1
Additional Instructions to Laboratory:
Pr erred VOC units (please choose one):
p.g/L q jigim3 q ppbv q ppmv
82/Standard
Full List
60SV
q TO-
15
VOCs Short
List /
Project List
q 8260SV
LI TO-15 Oxygenates
q 8260SV 0 TO-
15 Naphthalene q
8260SV
El TO-
15 TPHv
as Gas
E 8260SVm
0 TO-
15m Aromatic/Aliphatic Fractions E 8260SVm E TO-15m Leak eck CompoundDFAEIPA0HeMethanebyEPA8015mIFixedGases
by ASTMD1945ECO2 0 02 0 N2 SAMPLE NAME FIELD POINTNAME if
applicable) DATE minidd/yy TIME 24hr clock SAMPLE TYPE Indoor
Air (IA), Ambient Air (AA), Subslab (SS), Soil Vapor (SV)
CONTAINER SIZE & TYPE 400mUl U6L Summa, Tedlar, Tube, etc. s CONTAINER ID (#4) Lab use only: Receipt Vac . .5. \ if /....... , —,
R' ii I'LL I 0° 4 C7, til q r ,
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A 1.,,. 5 EV --. 5 c -AD - 1 (c/v zol" c- 6 5 1_,I}cst, ilv512-r )i 15- 5 () 6-1,