HomeMy WebLinkAboutMITIGATION (2)
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California
Environmental
WORKPLAN
SUPPLEMENTAL SUBSURFACE SITE ASSESSMENT
FUEL IMPACTS IN SOIL
Niagara Car Wash Facility
UST Permit No. 015-021-000333
1701 Stine Road
Bakersfield, California 93309
SUBMITTED TO
BAKERSFIELD FIRE DEPARTMENT
1715 Chester Avenue
Bakersfield, California 93301
Attention: Mr. Ralph E. Huey
FOR
CARWASH OF AMERICA
20280 South Vermont Avenue, Suite 100
Torrance, California 90502
Attention: Mr. Steve White
CE Job No. EV298-161O June 1999
EV161O.R02
31320 Via Colinas, Suite 104 · Westlake Village, CA 91362 · (818) 991-1542 . (213) 485·0606 · FAX (818) 991-0739
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TABLE OF CONTENTS
Page
TEXT
EXECUTIVE SUMMARY . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . ii
INTRODUCTION .................................................. 1
SITE DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 2
LOCATION DESCRIPTION ......................................... 2
S1DRAGE TANKS ............................................... 4
PREVIOUS WORK
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5
HYDROGEOLOGY
6
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PROPOSED WORKPLAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 7
SOIL SAMPLING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 7
REPORTING .................................................. 8
ILLUSTRATIONS
Vicinity Map
Plot Plan
APPENDICES
1. Site Specific Health and Safety Plan
II. Soil Sampling Protocols
EV161O,R02
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EXECUTIVE SUMMARY
J'
The subject property was redeveloped with a car wash facility 1983. The property is currently occupied
by Niagara Car Wash, Chevron Service Station, Detail Plus, and Jiffy Lube. Previous site assessments
by AJ Environmental, Inc identified areas of a fuel release to subsurface soil. California Environmental
prepared a Phase I Environmental Site Assessment, dated April 3, 1998, which recommended that the
previous environmental site assessments be submitted for review and approval to the City of Bakersfield
Fire Department. A letter from the Bakersfield Fire Department, dated May 24, 1999, requested a
workplan for additional site assessment.
Presented herein is a workplan to excavate five borings in the vicinity of the underground storage tanks
and fuel dispensers. The purpose of the site assessment is to further define the lateral and vertical extent
of the fuel hydrocarbons as requested by City of Bakersfield Fire Department (letter dated May 24,
1999). The additional subsurface data was requested by the City of Bakersfield Fire Department in order
to achieve low risk site closure.
The Workplan includes a Site Specific Health and Safety Plan (APPENDIX I). The workplan was
prepared in accordance with the Tri Regional Board Staff Recommendations for Preliminary Evaluations
and Investigations of Underground Storage Tank Sites, Regional Water Quality Control Board - Central
Valley Region, July 1990. The findings of the proposed work will be presented in a formal report.
EVI61O,R02
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1701 Stine Road
Bakersfield, California
June 1999
Page 1
INTRODUCTION
The following Workplan is presented pursuant to a request from the City of Bakersfield, Fire
Department for additional site assessment at the subject property. This Workplan conforms to the
guidelines in Appendix A Report, Tri-Regiofl{ll Board Staff Recommendations for Prelimifl{lry Evaluations
and Investigation of Underground Tank Sites (July 6, 1990). The subject property was developed with
a car wash facility in 1983. Three 12,000 gallon capacity USTs are located along the central portion of
the subject property. Two subsurface site assessment reports were prepared by A1 Environmental in
1997. The previous site assessments indicated that the soil beneath the site is impacted with gasoline
hydrocarbons.
EV1610,R02
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1701 Stine Road
Bakersfield, California
June 1999
Page 2
SITE DESCRIPfION
WCATION DESCRIPTION
The subject property is located on the west side of Stine Road approximately 200 feet south of Ming
Road in the City of Bakersfield, California (see VICINITY MAP). The current street address of the
subject property is 1701 Stine Road. The subject property is a rectangular shaped parcel of land, which
encompasses approximately 74,522 square feet (1.71 acres). Three commercial buildings occupy the
site. The current tenants of the property are Niagara Car Wash, Chevron Service Station, Detail Plus
and Jiffy Lube.
The single-story metal and concrete block building located along the eastern portion of the property is
utilized as office space, car wash services and a convenience store. The structure occupies
approximately 5,400 square feet. The building is utilized as a convenience store, office space, and the
car wash tunnel. The automobiles move through the tunnel in a north/south direction.
The single-story slump stone building located along the northwestern portion of the site is utilized by
Jiffy Lube. The structure occupies approximately 1,440 square feet. The building consists of auto bays
and an office. The structure is utilized as an automobile oil change facility. Hazardous substances
(primarily oils and lubricants) are stored and used within this building. Jiffy Lube facility uses and
stores motor oil onsite. The fresh oil is stored in aboveground containers with 2,500 gallon capacity.
The containers are located along the western wall of the Jiffy Lube building. Waste oil generated onsite
is stored in a 2,000 gallon UST located immediately south of the Jiffy Lube building.
EV1610.R02
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1701 Stine Road
Bakersfield, California
June 1999
Page 3
The single-story stucco structure located along the southwestern portion of the site is occupied by Details
Plus. The building is utilized as an automobile detailing facility. The structure occupies approximately
2,790 square feet. The building is utilized às office space and auto bays.
A canopy structure is located in the north-central portion of the site. There are three pump islands with
nine fuel dispensers located beneath the canopy. A concrete pad is located beneath the pump islands.
The service station stores automobile fuels in three 12,000 gallon underground storage tanks (USTs).
The USTs are located along the central portion of the subject property. The fuel is dispensed from one
of nine fuel dispensers located to the north of the USTS.
The subject property is generally level. A concrete drainage swale is located along the northern portion
of the property. Drainage from the property is by sheetflow towards the adjacent surface streets.
Surface drains were observed in the car wash tunnel.
Access to the property is via Stine Road to the east and Hasti-Acres Drive to the west, see PLOT
PLAN. The portion of the property not occupied by the car wash and auto servicing facilities consists
of landscaped planters and asphalt paved parking areas.
The subject property is bound to the north by commercial property with Ming Road located beyond; to
the west by Hasti-Acres Drive with undeveloped land located beyond; to the south by commercial
property; and to the east by Stine Road with commercial property located beyond.
EVI61O.R02
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1701 Stine Road
Bakersfield, California
June 1999
Page 4
STORAGE TANKS
Three 12,000 gallon capacity underground fuel storage tanks (USTs) are located beneath the central
portion of the subject property. The former owner, Mr. Hobin, reported during an interview for the
previous Phase I Environmental Site Assessment prepared by California Environmental, that the USTs
are single-walled with a concrete deadman support. The tanks were reportedly installed in 1983. The
USTs have reportedly been retrofitted to 1998 regulatory standards. The upgrade included the
installation of an,-'mteman)ladâer-sys~em utilized as secondary containment with a leak detection system.
The tank fill valves are located approximately 30 feet south of the USTs. Three pump islands with nine
fuel dispensers are located north of the USTs, beneath the canopy.
A 2,000 gallon capacity, single-walled, waste oil UST is located immediately south of the Jiffy Lube
building. The tank was reportedly installed in 1991. The waste oil stored within the UST is pumped
out by Ashbury Environmental and hauled offsite. Waste oil manifests are maintained at Niagara Car
Wash.
EVI61O.R02
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1701 Stine Road
Bakersfield, California
June 1999
Page 5
PREVIOUS WORK
A Phase II Site Assessment report, dated February 1997, was issued for three Niagara Car Wash sites
by A J Enviromnental. The purpose of the study was to determine the presence or absence of soil
contamination beneath the underground storage tanks, fuel dispensers, and supply lines at each of the
Niagara Car Wash sites. The report as submitted to California Enviromnental only contained
information for 1701 Stine Road, Bakersfield. Thirty four (34) soil samples were obtained from 17
borings and analyzed for BfEX compounds and total petroleum hydrocarbons (TPH) using EPA
Methods 8020 and 8015. Two areas of concern were ascertained during the subsurface exploration.
Laboratory analysis detected TPH 4,400 ppm, xylene 630 ppm, and ethylbenzene67 ppm in a boring
(NCWS #4) excavated between the west and center USTs. Soil samples from borings (#10, #12 and
#16) located beneath the dispensers contained fuel hydrocarbons up to 5,500 ppm. The report
recommended that a site characterization be conducted onsite in order to determine the vertical and
lateral of extent of the fuel impacts and that hand auger samples should be obtained in the vicinity of the
southern dispenser; and another boring should be drilled adjacent to the southwest dispenser.
A Site Characterization Report, dated February 1997, was issued for 1701 Stine Road, Bakersfield, by
A J Enviromnental. The report stated that the USTs were installed onsite in 1983. The purpose of the
study was to define the horizontal and vertical extent of the product plume associated with the release,
which occurred in the area of the underground storage tanks and determine if any product had reached
groundwater. Twenty nine (29) soil samples were obtained from the borings excavated onsite and
analyzed for BfEX, TPH gasoline, TPH diesel, and MtBE. The samples contained up to 12,000 mg/kg
of gasoline and up to 1,900 mg/kg of diesel. The volume of the plume was estimated to be 1,500 cubic
EV16lO,R02
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1701 Stine Road
Bakersfield, California
June 1999
Page 6
estimated to be 1,500 cubic yards extending to a depth of 85 feet below ground surface. A J
Environmental concluded that a "no action" alternative to remediation should be employed at the
property if approved by the local regulatory agency. The report stated that if the "no action" alternative
was not approved, vapor extraction could be implemented. Regulatory agencies were not involved in
oversight of the subsurface assessment of the subject property.
HYDRO GEOW GY
The subject property is located within the Tulare subregion of the Central Valley Groundwater Basin.
Previous subsurface site assessment reports prepared by A J Environmental for the subject property
indicate that the property is underlain with sand from the surface to approximately 30 feet bgs. Gravel
exists from approximately 30 to 50 feet bgs. Clay and sand exist from approximately 50 to 100 feet bgs.
Groundwater was not encountered during the' previous site assessments. The reports bY.. A=U
Environmental state that the Kern Water Agency indicates the depth to groundwater i~--etJjgs.
EV161O,R02
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1701 Stine Road
Bakersfield, California
June 1999
Page 7
PROPOSED WORKPLAN
SOIL SAMPLING
A California Registered Geologist or a Geologist directly supervised by a Registered Geologist will be
onsite to conduct the subsurface assessment. The final technical report will be signed by a Registered
Geologist. A Site Specific Health and Safety Plan is included as APPENDIX A. A copy of the plan will
be onsite during the site assessment work. A soil sampling survey will be conducted at the subject
property. Borings will be excavated in five locations using a hollow stem auger drill rig, see attached
PWT PLAN. Borings will be sampled at 5-10 foot intervals to an approximate depth of 100-120 feet
bgs. The soil samples will be analyzed until a 25 foot clean earth interval is achieved in the vadose
zone. Soil samples will be obtained using 2lh inch diameter split spoon sampler. The sampler contains
four 21h inch x 6 inch long diameter tubes for retention of the soil samples. The tube containing the soil
sample for the laboratory will be sealed at both ends with Teflon sheeting and tight fitting plastic caps.
The caps will be taped to the tube with masking tape, labeled and transferred immediately to the state
certified fixed laboratory for analysis. Detailed soil sampling protocols are included in APPENDIX II.
Perched or unconfined groundwater was not encountered in the previous subsurface assessments.
Sample analysis will be performed using a fixed base and/or mobile state accredited laboratory
(Columbia Analytical Services). All samples will be screened in the field using a Photovac MicroTip
PID. Samples will be analyzed for Total Petroleum Hydrocarbon - Fuel Characterization, Benzene,
Toluene, Ethylbenzene, Xylenes, and Methyl-tert-butyl ether (MtBE) using EPA Methods
8015FC/8020. Confirmation of MtBE will be conducted utilizing EPA Method 8260. The borings will
be backfilled using hydrated granulated bentonite. Two borings will be excavated to the north of the
EV161O.R02
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1701 Stine Road
Bakersfield, California
June 1999
Page 8
tank pit and three borings will be advanced in the vicinity of three fuel dispensers west of the tank pit
area. The borings will be excavated to further define the vertical and lateral extent of the plume. The
borings will be continuously logged for soil identification (using the Unified Soil Classification System)
and for field measured using a photoionization detector (PID). The PID will calibrated prior to the start
of the assessment using 100 ppm isobutylene standard.
REPORTING
The findings of the subsurface assessment will be presented in a fonnal report which confonns to the
Regional Board Staff Recommendations for Initial Evaluation and Investigation of Underground Storage
Tanks, Tri Regional Recommendations, Central Valley Regional Board Reporting Requirements, July
1990.
Should you have any questions, please call the undersigned.
Respectfully submitted,
~¿~
Charles 1. Bu
Certified Hydrogeolo is No. 55
Registered Environmental Assessor No. 837
Christopher E. Rude
Environmental Scientist
EVI61O.R02
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ILLUSTRATIONS
Vicinity Map
Plot Plan
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VICINITY MAP
,Car Wash America
1701 Stine Road, Bakerfield
Drawn By:
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EV298-1610
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Date:
June 1999
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LEGEND
Q Location of Hand Auger Test Holes
Excavated by AJ Environmental 1997
$ Location of 8 inch Hollow Stem Auger Borings
Excavated by AJ Environmental 1997
~ Location of Proposed Borings by CE
I Soil Sample Locations with Levels of Fuels
Greater than 1.000 ppm
- REFERENCE: SURVEY PROVIDED BY JOHN B, ABELL. INC
.--
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APPENDIX I
Site Specific Health and Safety Plan
EV1610.R02
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SITE SPECIFIC HEALTH AND SAFETY PLAN FOR SITE ASSESSMENT WORK
Commercial Property
1701 Stine Road
Bakersfield, California
The purpose of this Health and Safety Plan is to provide general safety requirements for site assessment
to be conducted at the subject property with respect to soil and water contaminated with fuel
hydrocarbons (VOCs). Site investigations conducted previously have determined that such compounds
are present.
Preparation of this Health and Safety Plan is not intended to relieve any contractor, his representatives
or any other professionals from their duties and responsibilities with respect to overall site safety for the
project. Specifically, this Health and Safety Plan covers environmental considerations with respect to
VOC impacted soil which may be encountered during future soil vapor sampling. The contractor is
responsible for observing all additional health and safety requirements as mandated by Cal-OSHA, the
Department of Building and Safety, the South Coast Air Quality Management District, the County of
Kern Health Department and all other pertinent health and safety rules which would govern work
activities to be conducted at a construction site.
EV161O.R02
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1701 Stine Road
Bakersfield, California
June 1999
Page 2
WORK OBJECTIVE
The overall work objective of this Health and Safety Plan is to provide for proper identification, safe
handling and mitigation of petroleum hydrocarbon contaminated soil which may be encountered during
drilling and sampling at the site. To achieve this objective, the following must be accomplished.
· Monitor the soil samples and drilling area periodically for flammable, explosive, or toxic
concentrations of gas.
· Provide for proper identification of petroleum hydrocarbon contaminated soils.
· Provide for proper handling and disposal of petroleum contaminated soils.
· Comply with the requirements of the City of Bakersfield Fire Department.
POTENTIAL HAZARDS
The drilling activities proposed at the subject property may present the following hazards with respect
to petroleum hydrocarbon contaminated soil:
1. Drilling into subsurface utilities.
2. Fire and explosive hazards created by the volatile vapors which may be present.
3. Toxic and irritating gasses which may be present at levels above or below the action levels deemed
safe for human exposure. Although these levels appear to be unlikely, proper use of protective
equipment and common sense should significantly reduce these hazards.
4. Chemical testing completed at the subject property indicates that petroleum hydrocarbons consisting
of gasoline and diesel fuel are present in the soil. Gasoline and diesel fuel may cause irritation to
the skin, eyes and respiratory tract. lilhalation of gasoline vapors may cause central nervous system
symptoms. Refer to Material Safety Data Sheet in APPENDIX II.
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1701 Stine Road
Bakersfield, California
{
June 1999
Page 3
EXCLUSION ZONE
An exclusion zone will be set up around the borehole and drilling rig while drilling and sampling. The
exclusion zone will be delineated with traffic cones and caution tape. Entry into the exclusion zone will
be restricted to properly trained and equipped personnel. No smoking is permitted in the exclusion zone.
If site access is restricted by fences or other barriers then the entire site may be considered as the
exclusion zone.
HAZARD COMMUNICATION
Material Safety Data Sheets (MSDS) for gasoline and diesel are included in APPENDIX II of this
report. High concentrations of diesel and/or gasoline vapor may be irritating to the eyes, nose and
throat. Prolonged inhalation of vapor may cause dizziness, headache, difficult breathing or respiratory
arrest. Liquid diesel and/or gasoline is irritating to the skin and eyes. If swallowed it will cause nausea
or vomiting. If liquid enters the lungs, it will cause severe irritation, coughing, gagging, pulmonary
edema and signs of bronchopneumonia and pneumonitis. Gasoline contains benzene which is a known
carcinogen. Gasoline TLV-TWA=300 ppm; STEL=500 ppm, benzene PEL-TWA=l ppm; STEL=5
ppm. MtBE TLV-TWA=40 ppm. Exposure to liquid gasoline and/or diesel fuel is not expected during
this project.
LEVELS OF PROTECTION
Level D protection is recommended.
Four levels of protection are described as follows:
. Level B: A NIOSH approved portable pressure demand self-contained breathing apparatus.
Appropriate protective clothing, e.g., Tyvek, Saranex, or chemical resistant suit with Nitrile (NBR)
gloves and steel-toed neoprene boots.
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Bakersfield, California
June 1999
Page 4
. Level C: A NIOSH approved half face or full face mask air purifying respirator with dual organic
vapor cartridges. Appropriate protective clothing, e.g. Tyvek, Saranex, or chemical resistant suit
with Nitrile (NBR) gloves and steel-toed neoprene boots.
. Level C (modified): A NIOSH approved half face mask air purifying respirator with dual organic
vapor cartridges. Safety glasses may be carried when none to very limited accidental exposure is
anticipated. (Clothing as for Level D)
Recommended:
EMERGENCY PROCEDURES
COMMUNICATION PROCEDURES
A site phone will be available to all workers.
EMERGENCY EXITS
All work area entrances will be left open to provide for emergency egress during the course of the work
but shall be barricaded or marked to discourage the entrance of unauthorized persons.
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Bakersfield, California
June 1999
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EMERGENCY SERVICES
The address, phone number, and name of the local hospital and medical emergency room and the phone
number of an ambulance and fire department/rescue unit are given below. This plan will be available
to each individual/working at the job site. Hospital location is shown on the enclosed VICINITY MAP.
All emergency services can be obtained by dialing 911.
Major medical emergencies requiring a trauma center:
Mercy Hospital
2215 Truxtun Avenue
Bakersfield, California
(661) 632-5000
EMERGENCY EQUIPMENT
The following emergency equipment will be available onsite:
. A first aid kit.
. A fire extinguisher.
DECONTAMINATION
The need for personal decontamination is not anticipated. Limited decontamination materials will be
available and will consist of buckets, brushes, detergent, and water.
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Bakersfield, California
June 1999
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PERSONNEL AND ENVmONMENTAL MONITORING
The following instruments will remain at the job and be continuously employed by a qualified person:
. Photo-Ionization Instrument (PID), Photovac Microtip.
SAFETY/TRAINING REQUIREMENTS
Personnel engaging in level C activities will be properly trained for those activities. All personnel who
use respiratory protective equipment will be properly trained in its use and properly fitted to their
assigned respirators. All workers are to have 40 hour Health and Safety training for hazardous waste
operations.
EQUIPMENT
Personal Safety Equipment
Workers shall have available personal protective safety equipment as follows:
1. Respiratory protection as appropriate for the level of hazard; a NIOSH approved half-face air-
purifying respirator with NIOSH approved organic vapor cartridges.
2. Plastic hard hats.
3. Steel-toed work boots.
4. Safety glasses/chemical protective goggles.
5. 8-mil nitrile gloves, and other suitable protective clothing shall be worn when sampling. Standard
work uniform will be worn where exposure is not expected. Chemical protective suits will be worn
(as specified by the safety officer) for protection from liquid hazards as appropriate.
6. Heavy leather gloves shall be worn when working with drilling tools or other heavy equipment.
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June 1999
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Facility Safety Equipment
The following safety equipment shall be continuously available at the job site in sufficient quantities:
1. Clean water, soap, and paper towels.
2. First aid kit (20 unit).
3. Fire Extinguisher.
4. Site phone.
PERSONAL HEALTH AND HYGIENE
1. Personal safety and the safety of fellow workers require that all employees arrive at the job and
remain mentally alert. No alcohol or drugs shall be permitted at any job site. Parts of the body
which are contacted by petroleum hydrocarbons or distillates should be washed immediately with
soap and water.
2. An cut or abrasion shall be treated immediately, a qualified professional health practitioner shall be
consulted if the safety manager deems it necessary.
Should you have any questions regarding the proposed workplan, please call the undersigned.
arles I. uc ey
Certified Engineering logist No. 1250
Registered Environmental Assessor No. 837
r6~de~
Project Manager
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APPENDIX II
Soil Sampling Protocols
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SOIL SAMPLING PROTOCOLS
Samples will be labeled, preserved, and transported properly to retain sample integrity. This exhibit
describes procedures to be followed by CE, Inc., during collection of samples of subsurface soil.
Sampling guidance documents from the AIDerican Society of Testing and Materials (ASTM), U.S.
Environmental Protection Agency (EPA) , and CaliforniaEPA will be followed for all sampling
procedures. Actual sampling procedures employed will be based on field conditions and may differ
slightly from those described here.
1.0 HYDRO PUNCH BORING/SOIL SAMPLING PROCEDURES
Borings and soil sampling will be performed under the direction of a CE geologist. The borings will
be advanced using a truck-mounted, hollow-stem auger drill rig, hydraulic push rig and/or other similar
methods. Hand auger sampling is also employed.
Soil samples will be continuously collected or at 2-5 foot vertical depth intervals. Soil sampling will be
done in accordance with ASTM 1586-84. Using this procedure, three 21f2-inch-diameter, 6-inch-Iength,
brass tubes will be placed in a California-type split-barrel sampler. The sampler will be driven into the
soil by a 140-pound weight falling 30 inches. After an initial set of 6 inches, the number of blows
required to drive the sampler an additional 12 inches is known as penetration resistance, or the "N"
value. The "N" value will be used as an empirical measure of the relative density of cohesionless soils
and the consistency of cohesive soils.
Upon recovery of the split-barrel sampler, the brass tubes containing the soil will be removed. The ends
of one of the three brass tubes will be sealed with Teflon sheets and plastic end caps. The sample will
be labeled with an identification number, time, date, location, and requested laboratory analysis. The
sample will be placed in a plastic bag and stored at approximately 40 Celsius (C) in an ice chest for
transport to the laboratory. As an alternative, the samples will be immediately transferred to an onsite
mobile laboratory. Sample custody procedures outlined in Section 4.0 of this exhibit will be followed.
One of the brass tubes containing soil will be partially extracted to create headspace and capped for later
screening for organic vapors using a photoionization detector (PID) or a flame ionization detector (FID).
The remaining portion of the soil sample will be examined and a complete log of soil conditions will be
recorded on a soil boring log using the Unified Soil Classification System. The soil will be examined
for grain size, color, and moisture content.
The split-barrel sampler will be cleaned to prevent cross-contamination for each sampling interval using
procedures described in Section 3.0.
Borings advanced with hollow-stem augers generate cuttings. The soil generated will be stored on
visqueen or in 55 gallon drums.
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2.0DECONTAMINATION AND DISPOSAL PROCEDURES
2.1 Equipment Decontamination
All equipment that comes in contact with potentially contaminated soil, drilling fluid, air, or water will
be decontaminated before each use. Decontamination consists of steam-cleaning, a high-pressure, hot-
water rinse, or alconox (phosphate free soap) and freshwater rinse, as appropriate.
Drilling and sampling equipment will be decontaminated as follows:
1. Drill rig augers, drill rods, and drill bits will be steam-cleaned prior to use and between
borings. Visible soil, grease, and other impurities will be removed.
2. Soil sampling equipment will be cleaned prior to use and between each boring. Prior to
individual sample collection, the sampling device will be cleaned in an alconox solution and
rinsed twice in clean water. Any visible soil residue will be removed.
3. Staiilless steel or brass soil sampling tubes will be steam-cleaned or will be washed in a
alconox solution and rinsed with clean water.
3.0 FIELD MEASUREMENTS
Field data will be collected during various sampling and monitoring activities; this section describes
routine procedures followed by personnel perfonning field measurements. The methods presented below
are intended to ensure that field measurements are consistent and reproducible when perfonned by
various individuals.
3.1 Buried Utility Locations
Prior to commencement of work on site, CE will contact appropriate utility companies to have
underground utility lines located. CE also researches the location of all underground utilities using past
site construction and surveying plans and by conducting a ground reconnaissance of the area if available,
or if provided by client/property owner. All work associated with the auger borings will be preceded
by hand augering to a minimum depth of 5 feet below grade to avoid contact with underground utilities.
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3.2 Lithologic Logging
A log of soil conditions encountered during the drilling and sample collection will be maintained using
the Unified Soil Classification System by an CE geologist. All borings will be reviewed by a California
registered geologist.
The collected soil samples will be examined and the following infonnation recorded: boring location,
sample interval and depth, blow counts, color, soil type, moisture content (qualitative), and depth at
which ground water (if present) is first encountered. Also recorded on the soil boring logs will be the
field screening results derived from the use of a portable PID or FID.
3.3 Disposal Procedures
Soils and fluids that will be produced and/or used during the installation and sampling of borings, and
that are known or suspected to contain potentially hazardous materials, will be contained during the
above operations. These substances will be retained on site until chemical testing has been completed
to detennine the proper means of disposal. Handling and disposal of substances known or suspected to
contain potentially hazardous materials will comply with the applicable regulations of FED EPA, CAL
EPA and CAL OSHA, and any other applicable regulations. Soils and fluids produced and/or used
during the above-described operations that appeared to contain potentially hazardous materials will be
disposed of appropriately.
Residual substances generated during cleaning procedures that are known or suspected to pose a threat
to human health or the environment will be placed in appropriate containers until chemical testing had
been completed to detennine the proper means for their disposal.
4.0 SAMPLE CUSTODY
This section describes standard operating procedures for sample custody and custody documentation.
Sample custody procedures will be followed through sample collection, transfer, analysis, and ultimate
disposal. The purpose of these procedures is to assure that (1) the integrity of samples will be
maintained during their collection, transportation, and storage prior to analysis and (2) post-analysis
sample material will be properly disposed of. Sample custody is divided into field procedures and
laboratory procedures, as described below.
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4.1 FIELD CUSTODY PROCEDURES
Sample quantities, types, and locations will be determined before the actual fieldwork commences. As
few people as possible handle samples. The field sampler will be responsible for the care and custody
of the collected samples until they are properly transferred.
4.1.1 Field Documentation
Each sample will be labeled and sealed properly immediately after collection. Sample identification
documents will be carefully prepared so that identification and chain-of-custody records can be
maintained and sample disposition can be controlled. Forms will be filled out with waterproof ink. The
following sample identification documents will be utilized.
· Sample labels
· Field notes
· Chain-of-custody forms
4.1.2 Sample Labels
Sample labels provide identification of samples. Preprinted sample labels will be provided. Where
necessary, the label will be protected from water and solvents with clean label-protection tape. Each
level will contain the following information:
· Name of collector
· Date and time of collection
· Place of collection
· CE project number
· Sample number
· Preservative (if any)
4.1.3 Field Notes
Information pertinent to a field survey, measurements, and/or sampling will be recorded in field notes.
Entries may include the following:
· Name and title of author, date and time of entry, and physical/environmental conditions
during field activity.
· Location of sampling. or measurement activity.
· Name(s) and title(s) of field crew.
· Type of sampled or measured media (e.g., soil, groundwater, air, etc.)
· Sample collection or measurement methodes).
· Number and volume of sample(s) taken.
· Description of sampling point(s).,
· Description of measuring reference points.
· Date and time of collection or measurement.
· Sample identification number(s).
· Sample preservative (if any).
· Sample distribution (e.g. laboratory).
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· Field observations/comments.
· Field measurements data (pH, etc.)
4.1.4 Chain-of-Custody Record
A chain-of-custody record will be filled out for and accompany every sample and every shipment of
samples to the analytical laboratories in order to establish the documentation necessary to trace sample
possession from the time of collection. The record will contain the following information:
· Sample or station number of sample J.D.
· Signature of collector, sampler, or recorder.
· Date and time of collection.
· Place of collection.
· Sample type.
· Signatures of persons involved in the chain of possession.
· Inclusive dates of possession.
The laboratory portion of the form will be completed by laboratory personnel and contains the following
information:
· Name of person receiving the sample.
· Laboratory sample number.
· Date and time of sample receipt.
· Analyses requested.
· Sample condition and temperature.
4.1.5 Sample Transfer and Shipment
Samples will always be accompanied by a chain-of-custody record. When transferring samples, the
individuals relinquishing and receiving the samples will sign, date, and note the time on the chain-of-
custody record. Samples will be packaged properly for shipment and dispatched to the appropriate
laboratory for analysis. The chain-of-custody record will accompany each shipment. The method of
shipment, courier name(s), and other pertinent information will be entered in the chain-of-custody
record.
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4.2 Laboratory Custody Procedures
A designated sample custodian will accept custody of the shipped samples and verified that the
infonnation on the sample label matched that on the chain-of-custody record. Infonnation regarding
method of delivery and sample conditions will be also checked on the chain-of-custody record. The
custodian will then enter the appropriate data into the laboratory sample tracking system. The laboratory
custodian may use the sample number on the sample label or may assign a unique laboratory number to
each sample. The custodian will then transfer the sample(s) tò the proper analyst(s) or stored the
sample(~) in the appropriate secure area.
Laboratory personnel are responsible for the care and custody of samples from the time they are received
until the sample is exhausted. Once at the laboratory, the sample are handled in accordance with U.S.
Environmental Protection Agency SW-846. Test Methods for Evaluating Solid Waste Physical/Chemical
Methods. Third Edition, for the intended analyses. All date sheets, chromatographs, and laboratory
results will be field as part of the pennanent documentation.
4.3 Corrections to Documentation
Original data recorded in field notes, chain-of-custody records, and other fonns will be written in ink.
These documents will not be altered, destroyed, or discarded, even if they will be illegible or contained
inaccuracies that required a replacement document.
If an error is made or found on a document, the individual making the corrections will do so by crossing
a single line through the error, entering the correct infonnation, and initialing and dating the change.
The erroneous infonnation will not be obliterated. Any subsequent error(s) discovered on a document
will be corrected. All corrections will be initialed and dated.
4.4 Sample Storage and Disposal
Samples and extracts will be retained by the analytical laboratory for 60 days after a written report will
be issued by the laboratory. Unless notified by the program manager, excess or unused samples will be
disposed of by the laboratory in an appropriate manner consistent with applicable government
regulations.
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