HomeMy WebLinkAbout2511-2513 south h soil assessment work planAdvanced Environmental Concepts, Inc. is pleased to present the following:
Soil Assessment Work Plan
for
Benton Park Cleaners
2511-2513 South H Street
County of Kern • Bakersfield, California
This report has been prepared for:
Mr. Mel Atkinson Prepared: September 2016
- ENVIRONMENTAL CONCEPTS WITH DESIGN IN MIND -
220 E. TRUXTUN AVENUE BAKERSFIELD, CA 93305 6611395-1646 FAX 661/395-1616
Subsurface Soil and Indoor Air Assessment Work Plan Advanced Environmental Concepts, Inc.
Table of Contents
1.0 INTRODUCTION
1.1 Purpose
1.2 Scope of Work
1.3 Schedule
2.0 BACKGROUND
3.0 PHYSICAL CHARACTERISTICS
3.1 Site Description
3.2 Site Hydrogeology
4.0 WORK PLAN
4.1 Drilling Methods
4.2 Summa Canister Sample Collection
4.3 Analytical Testing
5.0 REMARKS /SIGNATURES
Appendices:
(A) Project Maps /Figures
(B) Health & Safety Plan
(C) July 5, 2016 Soil Gas Survey
• ENVIRONMENTAL CONCEPTS WITH DESIGN IN MIND e
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220 E. TRUXTUN AVENUE BAKERSFIELD, CA 93305 661/395 -1646 FAX 661/395 -1616
Subsurface Soil and Indoor Air Assessment Work Plan Advanced Environmental Concepts, Inc.
1.0 INTRODUCTION
Mr. Mel Atkinson, Property Manager for the Benton Park Cleaners and surrounding Benton Park
Shopping Center, has authorized Advanced Environmental Concepts, Inc. (AEC) to prepare this soil
assessment work plan to investigate the potential for Volatile Organic Compounds (VOCs) consisting
primarily of Tetrachloroethene (PCE) and /or Trichloroethylene (TCE) at the subject property from
historical use of PCE as a cleaning solvent since commencement of the dry cleaning operation in 1970.
The subject property has a street address of 2511 -2513 South H Street, Bakersfield, California (Figure
1).
1.1 Purpose
The soil assessment program described in this work plan has the following objective:
Evaluate and quantify the potential for VOCs to be identified in subsurface soil consisting
primarily of Tetrachloroethene (PCE) and /or Trichloroethylene (TCE). PCE was
previously detected in subsurface soil gas at approximately 5' and 15' below ground
surface (bgs) ranging from 1.05 ug /L to a high concentration of 80.14 ug /L. Trace
concentrations of TCE were also detected in some of the soil gas samples. The current
February 2016, Revision 3, Environmental Screening Level (ESL) comparative standard
for PCE in Subslab Soil Gas with a non - restricted use is 0.24 ug /L and for a commercial
scenario is 2.1 ug /L. Also, the Indoor Air Direct Exposure Human Health Risk Levels for
non - restricted use is 0.00048 ug /L and for commercial use is 0.0021 ug /L.
1.2 Scope of Work
The scope of services described in this work plan, are summarized below for clarification
purposes. Detailed investigative methods are presented in Section 4.0 of this report:
1. Locating underground utilities using Client records and Underground Service
Alert (USA);
2. Evaluate subsurface soil by advancing five exploratory soil borings in the
locations depicted on Figure 2 which are generally proximal to a soil gas location
that exhibited the higher detections to confirm the soil gas analytical results;
3. The soil borings will be drilled using a Geoprobe 6600 drill rig, which is a larger,
heavy -duty drilling machine. Soil samples will be collected at intervals of 5 -feet
commencing at 5 -feet below ground surface (bgs) to 30 -feet bgs using a spoon
sampler lined with clean acetate sleeves. The soil samples will be field screened
using a Photoionization Detector (PID) equipped with a 10.6 eV lamp;
4. Analyzing selected soil samples for full scan of VOCs by EPA Method 826013;
5. Preparing soil boring logs in accordance with the United Soils Classification
System (USCS).
6. Also, AEC will conduct indoor air sampling using 6 Liter Summa canisters with
the controllers set for a 10 hour collection rate. One canister will be placed within
the Benton Park Cleaners; one canister within the Mis Hermanos clothing store;
one in the Little Caesars Pizza restaurant; and one on the roof top of the
cleaners. The four canisters will collect indoor air during general business hours.
In addition, the process will be repeated during non - operational hours.
7. Prepare a final report detailing the results of the soil investigation and indoor air
sampling which will include drilling methods, analytical results, extent of VOC-
impacted soil and indoor air, conclusions, and recommendations.
1
ENVIRONMENTAL CONCEPTS WITH DESIGN IN MIND
220 E. TRUXTUN AVENUE BAKERSFIELD, CA 93305 661/395 -1646 FAX 661/395 -1616
Subsurface Soil and Indoor Air Assessment Work Plan Advanced Environmental Concepts, Inc.
1.3 Schedule
Advanced Environmental Concepts, Inc. anticipates beginning the services described in this
work plan upon approval by the City of Bakersfield Fire Department (Mr. Howard Wines), Valley
Republic Bank, and Mel Atkinson, Property Manager. The indoor air sampling and soil borings
should be completed within two days of mobilization on the site. A final report will be prepared
summarizing all field operations and laboratory results. The report will be provided within 2-
weeks of completion of the field work.
2.0 BACKGROUND
The soil gas study was initiated by AEC following the completion of our Phase I Environmental Site
Assessment (ESA) during June 2016 which identified the following:
Recognized Environmental Condition
The area of greatest environmental significance consists of the Benton Park Cleaners. A review of the
historical dry cleaning operations document Tetrachloroethene (PCE) solvent use at this site. On a
larger scale, prior studies indicate that approximately 75% of dry cleaner facilities operated in the US
during past decades have caused contamination to subsurface soil and groundwater and present a
human health risk from vapor intrusion. Currently, that percentage has decreased greatly in that
permitted operations do not present a significant source of ongoing contamination because of more
stringent operational regulations, regularly scheduled inspections, improved dry cleaning equipment,
and improved operating practices.
An interview with the onsite manager at the Benton Park Cleaners (Ms. Winona Treadwell) indicates
that the onsite cleaners has been operational since at least 1970; therefore, has been at this location
for the past 46 years. Ms. Treadwell stated that the original dry cleaning machine(s) at the facility
used PCE, then PCE and Trichlorofluoroethane; however, the current machine uses Drycleaning
Fluid 2000 (DF -2000) which is a petroleum -based solvent and environmentally compatible. AEC
observed a few 55- gallon drums of DF -2000 staged proximal to the existing dry cleaning machine; in
addition, AEC observed three 55- gallon drums used to contain the waste DF -2000 liquid and sludge
and also formerly contained the waste PCE solvent and sludge. Ms. Treadwell stated that Safety
Kleen retrieves the generated waste by- products on an as- needed basis. AEC's review of the Unified
Program Inspection Checklist forms filled out by the Bakersfield Fire Department inspector following
their scheduled inspection(s) indicated that the Benton Park Cleaners (formerly known as One Hour
Martinizing) used PCE from at least June 1987 (first BFD inspection) through at least the June 2006
inspection and that approximately 450 - gallons of new PCE and 25- gallons of waste PCE were being
stored onsite on a daily basis. It is the opinion of AEC that PCE has been used onsite since at least
1970. An inspection of the boiler room constructed along the west interior wall of the facility indicated
the presence of a floor drain that was heavily stained and may have been a disposal port for spent
PCE. In this room AEC also observed 5- gallon buckets in which the dry cleaning machine filters were
being drained.
PCE and its dechlorination by- products Trichloroethene (TCE), Dichloroethene (DCE) and Vinyl
Chloride can create a significant environmental concern to soil gas, soil and groundwater resources if
released in sufficient quantity. The pressing immediate concern is a human health threat from vapor
intrusion caused by chlorinated hydrocarbon soil vapors migrating from the subsurface into the
occupied space of an enclosed room. There are specific comparative standards identified as
Environmental Screening Levels (ESLs) for all three media that may be adversely impacted. To
evaluate if these standards have been exceeded it is generally accomplished by conducting a soil gas
investigation, followed by soil and possible groundwater investigation, if warranted. Therefore, AEC
recommends initially conducting a multi -depth soil gas survey proximal to the existing dry cleaning
machine and also proximal to the floor drain in the boiler room. The soil gas data obtained from this
investigation will be compared to the commerciallindustrial ESLs and determine a future course of
action.
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• ENVIRONMENTAL CONCEPTS WITH DESIGN IN MIND •
220 E. TRUXTUN AVENUE BAKERSFIELD, CA 93305 661/395 -1646 FAX 661/395 -1616
Subsurface Soil and Indoor Air Assessment Work Plan Advanced Environmental Concepts, Inc.
SOIL GAS STUDY
AEC and Optimal Technology mobilized to the site on July 5, 2016, to conduct the proposed soil gas
study (The Optimal Technology soil gas survey and analytical results are attached to this letter). AEC
sited the multi -depth soil gas sampling locations (ranging from 3' to 15' bgs) proximal to suspect areas of
potential chlorinated solvent releases. Therefore, AEC placed one soil gas location proximal to the
existing dry cleaning machine (SV -5) and also proximal to the floor drain in the boiler room (SV -4). The
remaining soil gas locations (SV -1, SV -2, SV -3, SV -6, SV -7, SV -8, SV -9 and SV -10) were placed in the
parking and drive areas west of the Benton Park Cleaners to test for the potential presence of PCE
migrating within the subsurface sewer line.
The analytical results from the samples collected within the dry cleaning building indicate detections of
Tetrachloroethene (PCE) ranging from 1.05 ug /L (SV -4 -3') to 8.39 (SV- 5 -5'). The samples collected from
the parking and drive areas west of the dry cleaning facility exhibited consistent detections at 5' and 15'
bgs of PCE ranging from 16.58 ug /L (SV- 2 -15') to 80.14 ug /L (SV- 8 -5'). In addition, seven of the samples,
including one duplicate, exhibited trace detections of Trichloroethene (TCE). It is important to note that
no other Volatile Organic Compounds (VOCs) were identified in soil gas above the indicated detection
limit.
PCE has a specific gravity of approximately 1.60; therefore, is approximately 60% more dense than
water. Also, PCE has a limited tendency to dissolve in water; as a result of its low solubility and high
density PCE tends to "sink" through soil and groundwater and can exist in a groundwater aquifer as a
separate Dense Non - Aqueous Phase Liquid (DNAPL) whereas, a gasoline will tend to float on the
potentiometric surface of the groundwater. The PCE identified at the subject property was generally
detected at higher concentrations with depth which coincide with the characteristics of the chemical. In
addition, a review of the spatial distribution of the PCE detections indicates the highest concentrations are
along the estimated trace of the sewer lateral(s).
AEC referenced the attached Bay Area Environmental Screening Levels (ESLs), Summary of Vapor
ESLs, February 2016 (Revision 3) for the comparative standard to the detected PCE concentrations. The
Subslab /Soil Gas Vapor Intrusion: Human Health Risk Levels indicates a comparative value of 2.1 E +03
ug /m3 which when converted to ug /L indicates a value of 2.1 ug /L. The only sample that did not exceed
the comparative ESL of 2.1 ug /L was sample SV -4 -3' (adjacent to floor drain in boiler room) which
exhibited a result of 1.05 ug /L.
Based on the data obtained to date from the multi -depth soil gas investigation, it is the opinion of AEC
that the detected PCE concentrations currently pose an environmental risk to human health from a
commercial /industrial occupation standpoint. Therefore, AEC recommends further investigation is
warranted consisting of using Summa canisters to collect indoor air samples. Also, as another
conservative measure, AEC recommends air flow circulation within the building interior during times of
occupancy. Accomplishing air flow circulation can be as simple as opening the back door during the day
time to a more complex process of installing ceiling fans and exhaust vents. Finally, AEC recommends
collection of soil samples to evaluate the environmental condition of the subsurface.
3.0 PHYSICAL CHARACTERISTICS
3.1 Site Description
The subject property consists of two buildings which have been divided into leasable tenant
space. The northernmost building is the larger structure and trends north- south; this building is
currently leased to the following tenants:
• ENVIRONMENTAL CONCEPTS WITH DESIGN IN MIND e
220 E. TRUXTUN AVENUE BAKERSFIELD, CA 93305 661/395 -1646 FAX 661/395 -1616
Subsurface Soil and Indoor Air Assessment Work Plan Advanced Environmental Concepts, Inc.
Tenant
Address
Square Footage
Dollar Tree
2505 South H Street
20,900
Mis Hermanos
2509 South H Street
3,000
Benton Park Cleaners
2511 -2513 South H Street
4,380
Little Caesars Pizza
2515 South H Street
1,600
WIC
2517 -2519 South H Street
4,400
Melrose Clothing Store
2601 South H Street
10,987
Home -Mart
2611 South H Street
18,032
This building was constructed during the early 1960s; prior to commercial development, the
subject site was in agricultural production of irrigated row crops from prior to 1937 until the mid -
1950s when the cultivation of row crops ceased and the general area graded in preparation for
conversion to residential and commercial use.
3.2 Site Hydrogeology
The subject property is located in the southeastern end of the San Joaquin Valley where the
Sierra Nevada, Great Valley, and Coastal Range physiographic provinces meet. The southern
end of the Sierra Nevada province is composed of a massive block of igneous and metamorphic
rock of Mesozoic age and older. This Sierran block, 40 to 100 miles wide and 400 miles long,
slopes five to seven degrees beneath the San Joaquin Valley. The Coastal Range province on
the west consists of tectonically deformed and fractured marine and non - marine sedimentary
rocks of Jurassic, Cretaceous, and Tertiary age which dip eastward beneath the San Joaquin
Valley. The Great Valley province is a broad asymmetrical synclinal trough, which is known as
the Sacramento Valley in the north and the San Joaquin Valley in the south. Beneath the
southern San Joaquin Valley floor, the Sierran plutonic and metamorphic rock is overlain by
consolidated marine rocks of Jurassic and Cretaceous age. These rocks are overlain by
continental marine and non - marine sedimentary rocks of Tertiary age. These continental
deposits are consolidated to semi - consolidated, fossilferous sandstone, siltstone, and shale
which thicken toward the south and west. The Tertiary rocks are overlain by unconsolidated
continental deposits consisting of Pliocene to Holocene river and lake sediments of gravel, sand,
silt, and clay. Surface features of the floor of the San Joaquin Valley consist of dissected
uplands, alluvial fans, overflow areas, and lake bottoms. Dissected uplands lie between the
mountains and the nearly flat Valley floor and are manifest in low lying hills through which
perennial and intermittent streams flow. These features consist of reworked older alluvium. The
alluvial fans are the sites of active stream deposition of sand and silts derived from the Sierra
Nevada and the dissected uplands. The overflow lands and lake bottoms lie in the central part of
the Valley where silt and clay accumulate in quiet lake and marsh environments.2 The subject
property is located on a flat grade with average approximate elevation of 380 -feet above MSL.3
The property is underlain by alluvial fan deposits created from sediments transported and
deposited by tributaries of the Kern River. The underlying sediments consist of gravels, sands,
silts, and clays.
The Central Valley of California is underlain by a broad and deep hydrogeologic unit consisting of
soil and rock of varying porosity and permeability. Physical dimensions are approximately 50
miles wide at the widest point in the Valley, 400 miles long, and as much as 2,000 feet deep.
Recharge to regional aquifers consists of infiltration of seasonal precipitation and percolation of
surface waters. The Valley aquifer of greatest storage, highest quality, and greatest accessibility
for domestic and agricultural use consists of the alluvial and lacustrine continental deposits
extending to depths of 1,500 to 2,000 feet beneath the San Joaquin Valley floor. Lithology and
hydraulic properties of these sediments are largely the product of the sediment source and the
depositional environment. These sediments range in size from clays to boulders and include all
mixtures between the extremes. Those of the west side of the Valley are derived largely from the
Coastal Ranges, which tend to consist of shales and fine sandstones with limited permeability.
The east side sediments are derived mainly from granitic materials of the Sierra Nevada which
are generally coarser and much more permeable. The majority of groundwater pumped from
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ENVIRONMENTAL CONCEPTS WITH DESIGN IN MIND
220 E. TRUXTUN AVENUE BAKERSFIELD, CA 93305 661/395 -1646 FAX 661/395 -1616
Subsurface Soil and Indoor Air Assessment Work Plan Advanced Environmental Concepts, Inc.
beneath the area occurs within unconsolidated continental deposits. Based on information
provided by the Kern County Water Agency4 depth to unconfined groundwater is approximately
175 -feet below grade and the groundwater flow direction (gradient) beneath the site is estimated
to be toward the southwest.
4.0 WORK PLAN
AEC proposes to advance a minimum of five soil borings at the subject site; the locations of the proposed
soil borings are plotted on Figure 2.
4.1 Drilling Methods
4.1.1 Soil Borings
The borings will be advanced using a Geoprobe rig. Soil sampling will be conducted at 5-
foot intervals commencing at 5 -feet bgs to approximately 30 -feet bgs. Upon reaching the
selected sampling interval, the sampler will be fitted with a four foot long acetate sleeve
and driven ahead of the rods using hydraulic force.
After driving the sampler to the required interval, it will be withdrawn from the borehole
and brought to the surface. The soil sample will be removed from the spoon, and the
acetate sleeve will be immediately sealed with Teflon tape, capped, duct - taped, labeled,
placed in a sealable plastic bag, and stored in a chilled ice chest for delivery to a State -
certified laboratory. All soil samples will be recorded on a chain -of- custody document to
ensure sample integrity and traceability. Soil lithology will be described from the cuttings
and recorded on the boring logs in accordance with the Unified Soils Classification
System (USCS). Also, at sampled locations indicating the highest PID detections, AEC
will use Terra Core samplers to preserve the sample and prevent possible volatilization of
the contaminant within the perceived sandy matrix.
The soil in the sleeve will also be screened with a photoionization detector for total
petroleum hydrocarbons. Prior to each sampling interval, the sampler will be washed in
an Alconox solution and double- rinsed with clean, deionized water.
4.2 Summa Canister Sample Collection
AEC will conduct indoor air sampling using 6 Liter Summa canisters with the controllers set for a
10 hour collection rate. One canister will be placed within the Benton Park Cleaners; one canister
within the Mis Hermanos clothing store; one in the Little Caesars Pizza restaurant; and one on
the roof top of the cleaners. The canisters placed within the building interiors will be set on a
stand approximately 4' in height and the four canisters will collect indoor air during general
business hours. In addition, the process will be repeated during non - operational hours. The
canister placed on the roof will be used to evaluate background conditions proximal to the site.
4.3 Analytical Testing
Soil samples collected during this project will be recorded on a chain -of- custody document and
prepared for submittal to Test America Laboratories, Inc. a California - certified laboratory in Irvine,
California. The selected soil samples will be analyzed for the full scan of VOCs by EPA Method
8260B. In addition, the Summa canisters will be analyzed for VOCs by Method TO -15 SIM by BC
Labs in Bakersfield, California.
5
• ENVIRONMENTAL CONCEPTS WITH DESIGN IN MIND •
220 E. TRUXTUN AVENUE BAKERSFIELD, CA 93305 661/395 -1646 FAX 661/395 -1616
Subsurface Soil and Indoor Air Assessment Work Plan Advanced Environmental Concepts, Inc.
5.0 REMARKS /SIGNATURES
This work plan represents Advanced Environmental Concepts, Inc.'s professional opinions. These
opinions are based on currently available data and were arrived at in accordance with accepted
hydrogeologic and environmental engineering practices. No other warranty, expressed or implied, is
given.
This work plan was prepared by:
Advanced Environmental Concepts, Inc.
Ja than L. Buck
P ncipal Geologist
Benton Park Cleaners
WE
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• ENVIRONMENTAL CONCEPTS WITH DESIGN IN MIND •
220 E. TRUXTUN AVENUE BAKERSFIELD, CA 93305 661/395 -1646 FAX 661/395 -1616
Site Location Map FIGURE
- ADVANCED ENVIRONMENTAL CONCEPTS INC
220 East Truxtun Avenue Benton Park Shopping Center 1
Bakersfield, California 93305 South of Wilson Road and West of South H Street
(661) 395 -1646 County of Kern • Bakersfield, California
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Site Location Map FIGURE
- ADVANCED ENVIRONMENTAL CONCEPTS INC
220 East Truxtun Avenue Benton Park Shopping Center 1
Bakersfield, California 93305 South of Wilson Road and West of South H Street
(661) 395 -1646 County of Kern • Bakersfield, California
LZ
N
A
TH-4
■
SNL7 Mis Hermanos
• Clothing Store
Benton Park
Cleaners
SV-5
SV-2 •
SV-6 SV-3 54-4
• 71Dry Cleaning
TH-3 SV_ I :I. Machine
■ • 'Floor
— ------------------------ ------------------------ Drain Little Caesars
■ TH-2
■ TH-1 1\ Pizza
Cement Pad
Estimated Location of and Sewer
Sewer Line Manholes
SWO SWS
0 •
0 20 40
1 1 50mmmoi
Approximate Scale
100�
-ADVANCED ENVIRONMENTAL CONCEPTS INC
220 East Truxtun Avenue
Bakersfield, California 93305
(661) 395-1646
SV-9
6
■
TH-5
Legend
SV- I Soil Vapor Sample Number
• Soil Vapor Sample Location
■ Test Hole (TH) Geoprobe Boring Location
Proposed Geoprobe Boring Locations
Benton Park Shopping Center
South of Wilson Road and West of South H Street
County of Kern • Bakersfield, California
FIGURE
2
TH -4
,
SV -7
• 58.72
,
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• ' 9 40.69 i T:3 Sk 1
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-- _- ••t--------- - - - - -- --- - -..4- ----- - - - -�- - __- �.- - - - + --
-- 17,34
■ TH -2
■ THE 1
Estimated Location o>
Se`,ker Line ;
' g ,
$V p � 10 Sw - &'
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r ,
r ,
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r
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r
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0 20 40
Approximate Scale
rr.
r
0?
,
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rr
Mis Hermapos
Benton Park '.
Cleaners
SV 5 ;
8.39 •
' 4 o Dry 6,,1eaning
• 7'03 '�' Ma4hine
r ioor
Drain Little Caesars
Pizza ;
Cement Pad r
and Sewer
Manholes
r'
,
,
,
,
,
Legend
SV -1 Soil Vapor Sample Number
• Soil Vapor Sample Location
■ Test Hole (TH) Geoprobe Boring Location
PCE Soil Gas Concentrations (5' bgs) FIGURE
1400MEOLMMI,
-ADVANCED ENVIRONMENTAL CONCEPTS INC - Ug'L
Benton Park Shopping Center
220 East Truxtun Avenue 3
Bakersfield, California 93305 South of Wilson Road and West of South H Street
(661) 395 -1646 County of Kern • Bakersfield, California
■ TH-2
LZ
I
0 20 40
Approximate Scale
TH-4
■
SV-7 Mis Hermanos
• 1 Clothing Store
%
% 15 'Benton Park,
Cleaners
30 %
SV-5
60 SV-2
Sv-6 sv 16.580 S4 Dry Cleaning
--�, 0
v_
66.610 34.610 TH-3 Sv-I El* Machine
• ""Floor
------------- 4- - - - - -- ---------- I S*,: Drain Little Caesars
18.f
■ TV- I Pizza
Cement Pad
Estimated Location of and Sewer
Sewer-Line Manholes
SV-8
0
SV-9
6
■
TH-5
Legend
SV- I Soil Vapor Sample Number
• Soil Vapor Sample Location
■ Test Hole (TH) Geoprobe Boring Location
Health & Safety Plan
for
Benton Park Cleaners
2511 -2513 South H Street
County of Kern - Bakersfield, California
Introduction:
A Site Safety Plan (SSP) has been designed to address safety provisions needed during the site soil
assessment/remediation. Its purpose is to provide established procedures to protect all on -site personnel
from direct skin contact, inhalation, or ingestion of potentially hazardous materials that may be encountered at
the site. The SSP establishes personnel responsibilities, personal protective equipment standards,
decontamination procedures and emergency action plans.
Advanced Environmental Concepts, Inc. seeks to enter the property described above for the purpose of
conducting a site assessment. The work will consist of Geoprobe boring and soil sampling to investigate the
potential for volatile organic compounds (VOCs) consisting primarily of Tetrachloroethene (PCE) and /or
Trichloroethylene (TCE) at the subject property.
Soil samples will be collected at intervals of 5 -feet commencing at 5 -feet below ground surface (bgs) to
approximately 30 -feet bgs using a spoon sampler lined with clean acetate sleeves.
Drilling equipment will be brought to the site and operated by:
Strongarm Environmental
13562 Pumice Street
Norwalk, California 90650
This SSP describes the means for protecting all on -site personnel from deleterious contamination of personal
injury while conducting on -site activities. As described below, we will strive to meet all requirements
promulgated by the California Department of Health Services.
Responsibilities of Key Personnel:
All personnel on -site will have assigned responsibilities. Mr. Jonathan L. Buck will serve as Project Manager
and on -site geologist. He will also serve as Site Safety Officer (SSO). As SSO, Mr. Buck will assure that on-
site personnel have received a copy of the SSP. Personnel will be required to document their full
understanding of the SSP before admission to the site. Compliance with the SSP will be monitored at all times
by the SSO. Appropriate personal protective equipment, listed below, will be available and utilized by all on-
site personnel. Prior to beginning work, the SSO will conduct a training session to assure that all are aware of
safe work practices. In the training session, personnel will be made aware of hazards at the site. Mr. Buck will
also be responsible for keeping field notes, collecting and securing samples, and assuring sample integrity by
adherence to Chain -of- Custody protocol.
o ENVIRONMENTAL CONCEPTS WITH DESIGN IN MIND -
220 E. TRUXTUN AVENUE BAKERSFIELD, CA 93305 661/395 -1646 FAX 661/395 -1616
Health & Safety Plan Advanced Environmental Concepts, Inc.
All on -site employees will take reasonable precautions to avoid unforeseen hazards. After documenting their
understanding of the SSP, each on -site employee will be responsible for strict adherence to all points
contained herein. Any deviation observed will be reported to the SSO and corrected. On -site employees are
held responsible for performing only those tasks for which they believe they are qualified. Provisions of this
SSP are mandatory and personnel associated with on -site activities will adhere strictly hereto.
Job Hazard Analyses:
Hazards likely to be encountered on -site include those commonly encountered when operating any
mechanical equipment, such as the danger of falling objects or moving machinery. Simple precautions will
reduce or eliminate risks associated with operating such equipment.
A drilling contractor has been employed to deliver and operate all drilling equipment. Qualified personnel only
will have any contact with this equipment. All on -site personnel, including the drilling contractor and his
employees, are required to wear hard hats when in close proximity to drilling equipment. Latex sampling
gloves will be worn by persons collecting or handling samples to prevent exposure to contaminants. Gloves
will be changed between samples and used ones discarded, to avoid cross - contamination. Proper respiratory
equipment will be worn if vapor contamination levels on -site exceed action levels as determined using a
Photoionization Detector (PID). Action levels requiring respiratory apparatus will be 10 -ppm above
background level in the breathing zone. Furthermore, no on -site smoking, open flames or sparks will be
permitted in order to prevent accidental ignition.
Risk Assessment Summary:
Exposure to chemicals anticipated on -site includes volatile organic compound (VOCs) consisting primarily of
Tetrachloroethene (PCE) and /or Trichloroethylene (TCE).
Exposure Monitoring Plan:
A PID will be used to monitor vapor concentrations around the site. Should concentrations exceed TLV's,
protective measures will be taken. Passive dosimeter badges will be placed in downwind locations if PID
readings indicate high levels of volatile organics in the breathing space.
Personal Protective Equipment:
Personnel on -site will have access to respirators with organic vapor cartridges. Replacement cartridges will
be available on -site as needed. When handling samples, the on -site Geologist will wear latex gloves. Hard
hats will be worn by all personnel on -site when in proximity of drilling equipment.
Work Zones and Security Measures:
Access to the site will be restricted to authorized personnel. A set of cones, placards, or wide yellow tape
surrounding the site will define the perimeter, if needed. The Project Manager will be responsible for site
security.
Decontamination Measures:
Avoidance of contamination whenever possible is the best method for protection. Common sense dictates
that on -site personnel avoid sitting, leaning or placing equipment on possible contaminated soil. All personnel
will be advised to wash their hands, neck and face with soap and water before taking a break or leaving the
site. Respirators will be washed with soap and water following each day's use.
Drilling and sampling equipment used will be decontaminated by steam - cleaning. Sampling equipment will be
decontaminated before each sample is collected.
- ENVIRONMENTAL CONCEPTS WITH DESIGN IN MIND -
220 E. TRUXTUN AVENUE BAKERSFIELD, CA 93305 661/395 -1646 FAX 661/395 -1616
Health & Safety Plan
General Safe Work Practices:
Advanced Environmental Concepts, Inc.
On -site personnel will be briefed each day in "tailgate" meetings as to the day's goals and equipment to be
used. Anticipated contaminants and emergency procedures will be reviewed. Appropriate personal protective
equipment will be put on and verified correct by the SSO, including respirator fit.
Drilling and sampling equipment will be steam - cleaned before arriving on -site. Split -spoon sampling
equipment will be cleaned before each use. Augers will be steam - cleaned between borings.
The on -site engineer will oversee operations and log borings. The Sample Coordinatorwill assure that proper
protocol is used at all times in collecting and handling samples.
Training Requirements:
The SSO will conduct a "tailgate" training session before work begins which will include contaminant
properties, warning signs, health hazard data, risk from exposure and emergency first aid. All chemicals are
to be covered and the SSO will assure that everyone fully understands site hazards.
Medical Surveillance Program:
According to CFR 29, 1910.120, Paragraph (f), employees who wear respirators thirty (30) days or more
during one (1) year or who have been exposed to hazardous substances or health hazards above established
permissible exposure limits are required to be monitored medically. All site personnel are required to have
had a complete physical (including blood chemistry) within the past year.
Record Keeping:
Documentation will be kept on personnel exposed to contaminant hazards on the job site according to OSHA
regulations. These will include documentation that employees have received training on the SSP, respiratory
protection, MSDS forms and all emergency procedures. These will be reviewed during the pre -work training
meeting.
Exposure records on each job will be kept for thirty (30) years to meet requirements. Included will be names
and social security numbers of employees, medical evaluations, on- the -job logs from entry to exit, First Aid
administered, visits on -site by outside persons and personal air- monitoring records.
Contingency Plans:
In the event of an accident, injury, or other emergency, the Project Director, Senior Project Manager, or other
person, will notify the appropriate agencies as follows:
Police, Fire, or Ambulance Emergency
9 -1 -1
2. Emergency Hospital:
Mercy Hospital
2215 Truxtun Avenue
Bakersfield, CA 93301
(661) 632 -5000
3
ENVIRONMENTAL CONCEPTS WITH DESIGN IN MIND -
220 E. TRUXTUN AVENUE BAKERSFIELD, CA 93305 661/395 -1646 FAX 661/395 -1616
Health & Safety Plan
Advanced Environmental Concepts, Inc.
1 have read the Health and Safety Plan and understand the contents herein:
NAME:
COMPANY
a ENVIRONMENTAL CONCEPTS WITH DESIGN IN MIND -
220 E. TRUXTUN AVENUE BAKERSFIELD, CA 93305 661/395 -1646 FAX 661/395 -1616
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® 220 East Truxtun Avenue Benton Park Shopping Center
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July 6, 2016
Benton Park, LLC
c/o Mr. Melvin Atkinson
M.D. Atkinson Company Inc.
1401 19th Street, Suite 400
Bakersfield, CA 93301
RE: July 5, 2016 Soil Gas Survey
Benton Park Cleaners
2511 -2513 South H Street
Bakersfield, California
Dear Mr. Atkinson:
Advanced Environmental Concepts, Inc., (AEC) and Optimal Technology conducted a soil gas survey on
July 5, 2016 at the Benton Park Cleaners; 2511 -2513 South H Street, Bakersfield, California. The soil gas
survey was primarily conducted in the parking and drive areas west of the Benton Park Cleaners facility
and at two locations within the structure.
BACKGROUND
The soil gas study was initiated by AEC following the completion of our Phase I Environmental Site
Assessment (ESA) during June 2016 which identified the following:
Recognized Environmental Condition
The area of greatest environmental significance consists of the Benton Park Cleaners. A review of the
historical dry cleaning operations document Tetrachloroethene (PCE) solvent use at this site. On a
larger scale, prior studies indicate that approximately 75% of dry cleaner facilities operated in the US
during past decades have caused contamination to subsurface soil and groundwater and present a
human health risk from vapor intrusion. Currently, that percentage has decreased greatly in that
permitted operations do not present a significant source of ongoing contamination because of more
stringent operational regulations, regularly scheduled inspections, improved dry cleaning equipment,
and improved operating practices.
An interview with the onsite manager at the Benton Park Cleaners (Ms. Winona Treadwell) indicates
that the onsite cleaners has been operational since at least 1970; therefore, has been at this location
for the past 46 years. Ms. Treadwell stated that the original dry cleaning machine(s) at the facility
used PCE, then PCE and Trichlorofluoroethane; however, the current machine uses Drycleaning
Fluid 2000 (DF -2000) which is a petroleum -based solvent and environmentally compatible. AEC
observed a few 55- gallon drums of DF -2000 staged proximal to the existing dry cleaning machine; in
addition, AEC observed three 55- gallon drums used to contain the waste DF -2000 liquid and sludge
and also formerly contained the waste PCE solvent and sludge. Ms. Treadwell stated that Safety
Kleen retrieves the generated waste by- products on an as- needed basis. AEC's review of the Unified
Program Inspection Checklist forms filled out by the Bakersfield Fire Department inspector following
their scheduled inspection(s) indicated that the Benton Park Cleaners (formerly known as One Hour
Martinizing) used PCE from at least June 1987 (first BFD inspection) through at least the June 2006
inspection and that approximately 450 - gallons of new PCE and 25- gallons of waste PCE were being
• ENVIRONMENTAL CONCEPTS WITH DESIGN IN MIND -
220 E. TRUXTUN AVENUE BAKERSFIELD, CA 93305 661/395 -1646 FAX 6611395 -1616
July 5, 2016 Soil Gas Survey
Advanced Environmental Concepts, Inc.
stored onsite on a daily basis. It is the opinion of AEC that PCE has been used onsite since at least
1970. An inspection of the boiler room constructed along the west interior wall of the facility indicated
the presence of a floor drain that was heavily stained and may have been a disposal port for spent
PCE. In this room AEC also observed 5- gallon buckets in which the dry cleaning machine filters were
being drained.
PCE and its dechlorination by- products Trichloroethene (TCE), Dichloroethene (DCE) and Vinyl
Chloride can create a significant environmental concern to soil gas, soil and groundwater resources if
released in sufficient quantity. The pressing immediate concern is a human health threat from vapor
intrusion caused by chlorinated hydrocarbon soil vapors migrating from the subsurface into the
occupied space of an enclosed room. There are specific comparative standards identified as
Environmental Screening Levels (ESLs) for all three media that may be adversely impacted. To
evaluate if these standards have been exceeded it is generally accomplished by conducting a soil gas
investigation, followed by soil and possible groundwater investigation, if warranted. Therefore, AEC
recommends initially conducting a multi -depth soil gas survey proximal to the existing dry cleaning
machine and also proximal to the floor drain in the boiler room. The soil gas data obtained from this
investigation will be compared to the commercialrndustrial ESLs and determine a future course of
action.
SOIL GAS STUDY
AEC and Optimal Technology mobilized to the site on July 5, 2016, to conduct the proposed soil gas
study (The Optimal Technology soil gas survey and analytical results are attached to this letter). AEC
sited the multi -depth soil gas sampling locations (ranging from 3' to 15' bgs) proximal to suspect areas of
potential chlorinated solvent releases. Therefore, AEC placed one soil gas location proximal to the
existing dry cleaning machine (SV -5) and also proximal to the floor drain in the boiler room (SV -4). The
remaining soil gas locations (SV -1, SV -2, SV -3, SV -6, SV -7, SV -8, SV -9 and SV -10) were placed in the
parking and drive areas west of the Benton Park Cleaners to test for the potential presence of PCE
migrating within the subsurface sewer line.
The analytical results from the samples collected within the dry cleaning building indicate detections of
Tetrachloroethene (PCE) ranging from 1.05 ug /L (SV -4 -3') to 8.39 (SV- 5 -5'). The samples collected from
the parking and drive areas west of the dry cleaning facility exhibited consistent detections at 5' and 15'
bgs of PCE ranging from 16.58 ug /L (SV- 2 -15') to 80.14 ug /L (SV- 8 -5'). In addition, seven of the samples,
including one duplicate, exhibited trace detections of Trichloroethene (TCE). It is important to note that
no other Volatile Organic Compounds (VOCs) were identified in soil gas above the indicated detection
limit.
PCE has a specific gravity of approximately 1.60; therefore, is approximately 60% more dense than
water. Also, PCE has a limited tendency to dissolve in water; as a result of its low solubility and high
density PCE tends to "sink" through soil and groundwater and can exist in a groundwater aquifer as a
separate Dense Non - Aqueous Phase Liquid (DNAPL) whereas, a gasoline will tend to float on the
potentiometric surface of the groundwater. The PCE identified at the subject property was generally
detected at higher concentrations with depth which coincide with the characteristics of the chemical. In
addition, a review of the spatial distribution of the PCE detections indicates the highest concentrations are
along the estimated trace of the sewer lateral(s).
AEC referenced the attached Bay Area Environmental Screening Levels (ESLs), Summary of Vapor
ESLs, February 2016 (Revision 3) for the comparative standard to the detected PCE concentrations. The
Subslab /Soil Gas Vapor Intrusion: Human Health Risk Levels indicates a comparative value of 2.1 E +03
ug /m3 which when converted to ug /L indicates a value of 2.1 ug /L. The only sample that did not exceed
the comparative ESL of 2.1 ug /L was sample SV -4 -3' (adjacent to floor drain in boiler room) which
exhibited a result of 1.05 ug /L.
2
• ENVIRONMENTAL CONCEPTS WITH DESIGN IN MIND •
220 E. TRUXTUN AVENUE BAKERSFIELD, CA 93305 661/395 -1646 FAX 661/395 -1616
July 5, 2016 Soil Gas Survey
Advanced Environmental Concepts, Inc.
Based on the data obtained to date from the multi -depth soil gas investigation, it is the opinion of AEC
that the detected PCE concentrations currently pose an environmental risk to human health from a
commercial /industrial occupation standpoint. Therefore, AEC recommends further investigation is
warranted consisting of using Summa canisters to collect indoor air samples. Also, as another
conservative measure, AEC recommends air flow circulation within the building interior during times of
occupancy. Accomplishing air flow circulation can be as simple as opening the back door during the day
time to a more complex process of installing ceiling fans and exhaust vents.
AEC appreciates the opportunity to provide our services, should you have any questions please do not
hesitate to contact the undersigned at your convenience.
Sincerely,
Advanced Environmental Concepts, Inc.
This soil gas review has been prepared by:
•
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P ncipal Geologist
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3
• ENVIRONMENTAL CONCEPTS WITH DESIGN IN MIND •
220 E. TRUXTUN AVENUE BAKERSFIELD, CA 93305 661/395 -1646 FAX 661/395 -1616
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tT) OPTIMAL TECHNOLOGY
Specializing in Environmental Field Services
July 6, 2016
Mr. Jon Buck
Advanced Environmental Concepts, Inc.
220 E. Truxtun Avenue
Bakersfield, CA 93305
Dear Mr. Buck:
This letter presents the results of the soil vapor investigation conducted by Optimal Technology
(Optimal), for Advanced Environmental Concepts, Inc. on July 5, 2016. The study was
performed at 2511 South H Street, Bakersfield, California.
Optimal was contracted to perform a soil vapor survey at this site to screen for possible
chlorinated solvents and aromatic hydrocarbons. The primary objective of this soil vapor
investigation was to determine if soil vapor contamination is present in the subsurface soil.
Gas Sampling Method
Gas sampling was performed by hydraulically pushing soil gas probes to a depth of 3.0 -15.0 feet
below ground surface (bgs). An electric rotary hammer drill was used to drill a 1.0 -inch diameter
hole through the overlying surface to allow probe placement when required. The same electric
hammer drill was used to push probes in areas of resistance during placement.
At each sampling location an electric vacuum pump set to draw 0.2 liters per minute (L /min) of
soil vapor was attached to the probe and purged prior to sample collection. Vapor samples were
obtained in SGE gas -tight syringes by drawing the sample through a luer -lock connection which
connects the sampling probe and the vacuum pump. Samples were immediately injected into the
gas chromatograph/purge and trap after collection. New tubing was used at each sampling point
to prevent cross contamination.
All analyses were performed on a laboratory grade Hewlett Packard model 5890 Series II gas
chromatograph equipped with a Hewlett Packard model 5971 Mass Spectra Detector and Tekmar
LSC 2000 Purge and Trap. An SGE capillary column using helium as the carrier gas was used to
perform all analysis. All results were collected on a personal computer utilizing Hewlett
Packard's 5971 MS and chromatographic data collection and handling system.
1667 Cross Bridge Place, Thousand Oaks, CA 91362 - Toll Free (877) SOIL GAS (764 -5427) • (818) 734 -6230 • Fax (818) 734 -6235
Quality Assurance
5 -Point Calibration
The initial five point calibration consisted of 20, 50, 100, 200 and 500 ul injections of the
calibration standard. A calibration factor on each analyte was generated using a best fit line
method using the HP data system. If the r2 factor generated from this line was not greater than
0.990, an additional five point calibration would have been performed. Method reporting limits
were calculated to be 0.01 -1.0 micrograms per Liter (ug /L) for the individual compounds.
A daily calibration check and end of run calibration check was performed using a pre -mixed
standard supplied by Scotty Analyzed Gases. The standard contained common halogenated
solvents and aromatic hydrocarbons (see Table 1). The individual compound concentrations in
the standards ranged between 0.025 nanograms per microliter (ng /ul) and 0.25 ng /ul.
TABLE 1
Dichlorodifluoromethane
Carbon Tetrachloride
Chloroethane
Trichlorofluoromethane
1,2- Dichloroethane
Benzene
1, 1 -Dichloroethene
Trichloroethene
Toluene
Methylene Chloride
1,1,2- Trichloroethane
Ethylbenzene
trans -1,2- Dichloroethene
Tetrachloroethene
m- /p- Xylene
1, l- Dichloroethane
Chloroform
o- Xylene
cis -1,2- Dichloroethene
1, 1, 1,2-Tetrachloroethane
Vinyl Chloride
1, 1, l- Trichloroethane
1,1,2,2- Tetrachloroethane
Freon 113
4- Methyl -2- Pentanone
Cyclohexane
Acetone
Chlorobenzene
2- Butanone
Isobutane
Sample Replicates
A replicate analysis (duplicate) was run to evaluate the reproducibility of the sampling system
and instrument. The difference between samples did not vary more than 20 %.
Equipment Blanks
Blanks were run at the beginning of each workday and after calibrations. The blanks were
collected using an ambient air sample. These blanks checked the septum, syringe, GC column,
GC detector and the ambient air. Contamination was not found in any of the blanks analyzed
during this investigation. Blank results are given along with the sample results.
Tracer Gas Leak Test
A tracer gas was applied to the soil gas probes at each point of connection in which ambient air
could enter the sampling system. These points include the top of the sampling probe where the
tubing meets the probe connection and the surface bentonite seals. Isobutane was used as the
tracer gas. No Isobutane was found in any of the samples collected.
Purge Volume
The standard purge volume of three volumes was purged in accordance with the July 2015
DTSC/RWQCB Advisory for Active Soil Gas Investigations.
Page 2 of 3
Shut -in Test
A shut -in test was conducted prior to purging or sampling each location to check for leaks in the
above - ground sampling system. The system was evaluated to a minimum measured vacuum of
100 inches of water. The vacuum gauge was calibrated and sensitive enough to indicate a water
pressure change of at least 0.5 inches.
Scope of Work
To achieve the objective of this investigation a total of 16 vapor samples were collected from 10
locations at the site. Sampling depths, vacuum readings, purge volume and sampling volumes are
given on the analytical results page. All the collected vapor samples were analyzed on -site using
Optimal's mobile laboratory.
Subsurface Conditions
Subsurface soil conditions at this site were predominately silty -sand from ground surface to 15.0
feet bgs. These soil conditions offered sampling flows at 0" water vacuum.
Results
During this vapor investigation all sixteen samples contained levels of Tetrachloroethene (PCE).
PCE levels ranged from 1.05 ug/L to 80.14 ug/L. Seven samples contained levels of
Trichloroethene (TCE). TCE levels ranged from 0.11 ug/L to 0.17 ug/L. None of the other
compounds listed in Table 1 above were detected above the listed reporting limits. A complete
table of analytical results is included with this report.
Disclaimer
All conclusions presented in this letter are based solely on the information collected by the soil
vapor survey conducted by Optimal Technology. Soil vapor testing is only a subsurface
screening tool and does not represent actual contaminant concentrations in either the soil and /or
groundwater. We enjoyed working with you on this project and look forward to future projects.
If you have any questions please contact me at (877) 764 -5427.
Sincerely,
Av� 6 ,
Attila Baly
Project Manager
Page 3 of 3
(T) OPTIMAL TECHNOLOGY
Specializing in Environmental Field Services
SOIL VAPOR RESULTS
Site Name: 2511 South H Street, Bakersfield, CA Lab Name: Optimal Technology Date: 7/5/16
Analyst: A. Baly Collector: A. Baly Inst. ID: HP -5890 Series II
Method: Modified EPA 8260B Detector: HP -5971 Mass Spectrometer Page: 1 of 3
SAMPLE ID
Sampling Depth (Ft.)
Purge Volume (ml)
Vacuum (in. of Water)
Injection Volume (ul)
Dilution Factor
COMPOUND
REP. LIMIT
Dichlorodifluoromethane
1.00
Chloroethane
1.00
Trichlorofluoromethane
1.00
Freon 113
1.00
Methylene Chloride
1.00
1,1- Dichloroethane
1.00
Chloroform
1.00
1,1,1- Trichloroethane
1.00
Carbon Tetrachloride
0.02
1,2- Dichloroethane
0.04
Trichloroethene (TCE)
0.10
1,1,2- Trichloroethane
1.00
Tetrachloroethene (PCE)
0.10
1, 1, 1,2-Tetrachloroethane
1.00
1,1,2,2 - Tetrachloroethane
1.00
Vinyl Chloride
0.01
Acetone
1.00
1,1- Dichloroethene
1.00
trans -1,2- Dichloroethene
1.00
2- Butanone (MEK)
1.00
cis- 1,2- Dichloroethene
1.00
Cyclohexane
1.00
Benzene
0.03
4- Methyl -2- Pentanone
1.00
Toluene
1.00
Chlorobenzene
1.00
Ethylbenzene
0.40
m /p- Xylene
1.00
o- Xylene
1.00
Isobutane (Tracer Gas)
1.00
BLANK -1
SV -1 -5'
SV -1 -15'
SV -2 -5'
SV -2 -15'
SV -3 -5'
SV -3 -15'
SV -4 -3'
N/A
5.0
15.0
5.0
15.0
5.0
15.0
3.0
N/A
1,500
3,215
1,500
3,215
1,500
3,215
1,500
N/A
0
0
0
0
0
0
0
50,000
50,000
50,000
50,000
50,000
50,000
50,000
50,000
1
1
1
1
1
1
1
1
Note: ND = Below Listed Reporting Limit
1667 Cross Bridge Place, Thousand Oaks, CA 91362 • Toll Free (877) SOIL GAS (764 -5427) - (818) 734 -6230 • Fax (818) 734 -6235
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1667 Cross Bridge Place, Thousand Oaks, CA 91362 • Toll Free (877) SOIL GAS (764 -5427) - (818) 734 -6230 • Fax (818) 734 -6235
(T) OPTIMAL TECHNOLOGY
Specializing in Environmental Field Services
SOIL VAPOR RESULTS
Site Name: 2511 South H Street, Bakersfield, CA Lab Name: Optimal Technology Date: 7/5/16
Analyst: A. Baly Collector: A. Baly Inst. ID: HP -5890 Series II
Method: Modified EPA 8260B Detector: HP -5971 Mass Spectrometer Page: 2 of 3
SAMPLE ID
Sampling Depth (Ft.)
Purge Volume (ml)
Vacuum (in. of Water)
Injection Volume (ul)
Dilution Factor
COMPOUND
REP. LIMIT
Dichlorodifluoromethane
1.00
Chloroethane
1.00
Trichlorofluoromethane
1.00
Freon 113
1.00
Methylene Chloride
1.00
1,1- Dichloroethane
1.00
Chloroform
1.00
1, 1, 1 -Trichloroethane
1.00
Carbon Tetrachloride
0.02
1,2- Dichloroethane
0.04
Trichloroethene (TCE)
0.10
1,1,2- Trichloroethane
1.00
Tetrachloroethene (PCE)
0.10
1, 1, 1,2-Tetrachloroethane
1.00
1,1,2,2- Tetrachloroethane
1.00
Vinyl Chloride
0.01
Acetone
1.00
1,1- Dichloroethene
1.00
trans -1,2- Dichloroethene
1.00
2- Butanone (MEK)
1.00
cis -1,2- Dichloroethene
1.00
Cyclohexane
1.00
Benzene
0.03
4- Methyl -2- Pentanone
1.00
Toluene
1.00
Chlorobenzene
1.00
Ethylbenzene
0.40
m/p- Xylene
1.00
o- Xylene
1.00
Isobutane (Tracer Gas)
1.00
SV -4 -5'
SV -5 -5'
SV -6 -5'
SV -6 -5'
Dup
SV -6 -15'
SV -7 -5'
SV -8 -5'
SV -9 -5'
5.0
5.0
5.0
5.0
15.0
5.0
5.0
5.0
1,500
1,500
1,500
1,500
3,215
1,500
1,500
1,500
0
0
0
0
0
0
0
0
50,000
50,000
50,000
50,000
50,000
50,000
50,000
50,000
1
1 1
1 1
1 1
1 1
1 1
1 1
1 1
Note: ND = Below Listed Reporting Limit
1667 Cross Bridge Place, Thousand Oaks, CA 91362 - Toll Free (877) SOIL GAS (764 -5427) - (818) 734 -6230 • Fax (818) 734 -6235
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1667 Cross Bridge Place, Thousand Oaks, CA 91362 - Toll Free (877) SOIL GAS (764 -5427) - (818) 734 -6230 • Fax (818) 734 -6235
(T)OPTIMAL TECHNOLOGY
Specializing in Environmental Field Services
SOIL VAPOR RESULTS
Site Name: 2511 South H Street, Bakersfield, CA Lab Name: Optimal Technology Date: 7/5/16
Analyst: A. Baly Collector: A. Baly Inst. ID: HP -5890 Series II
Method: Modified EPA 8260B Detector: HP -5971 Mass Spectrometer Page: 3 of 3
SAMPLE ID
Sampling Depth (Ft.)
Purge Volume (ml)
Vacuum (in. of Water)
Injection Volume (ul)
Dilution Factor
COMPOUND
REP. LIMIT
Dichlorodifluoromethane
1.00
Chloroethane
1.00
Trichlorofluoromethane
1.00
Freon 113
1.00
Methylene Chloride
1.00
1,1- Dichloroethane
1.00
Chloroform
1.00
1, 1, 1 -Trichloroethane
1.00
Carbon Tetrachloride
0.02
1,2- Dichloroethane
0.04
Trichloroethene (TCE)
0.10
1,1, 2- Trichloroethane
1.00
Tetrachloroethene (PCE)
0.10
1,1,1,2- Tetrachloroethane
1.00
1,1,2,2- Tetrachloroethane
1.00
Vinyl Chloride
0.01
Acetone
1.00
1,1- Dichloroethene
1.00
trans -1,2- Dichloroethene
1.00
2- Butanone (MEK)
1.00
cis -1,2- Dichloroethene
1.00
Cyclohexane
1.00
Benzene
0.03
4- Methyl -2- Pentanone
1.00
Toluene
1.00
Chlorobenzene
1.00
Ethylbenzene
0.40
m /p- Xylene
1.00
o-Xylene
1.00
Isobutane (Tracer Gas)
1.00
SV -10 -5'
5.0
1,500
0
50,000
1
Note: ND = Below Listed Reporting Limit
1667 Cross Bridge Place, Thousand Oaks, CA 91362 - Toll Free (877) SOIL GAS (764 -5427) - (818) 734 -6230 - Fax (818) 734 -6235
MisBeuomzua
Benton Park,
Cleaners
-----------
\ Cement Pad Pizza
Estimated Location of and Sewer
Sewer Line Manholes
mv-10 Sv-8 |
0 0 |
ALegmid
0 20 40 SV-1 Soil Vapor SarnpleNumber
Approximate Scale
Optimal Technology DATE: July 5, 2016 APPROXIMATE SCALE: 111=4W FIGURE
1667 Cross Bridge Place
Thousand Oaks, CA 91362 COMPANY: TITLE: Soil Vapor Sampling Location Map
Toll-free (877) SOIL GAS Advanced 1
Tel. (818) 734-6230 * Fax: (818) 734-6235 Environmental Concepts 2511 South H Street, Bakersfield, CA
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