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ARCHIVED REPORTS XR0003439
EnvironmentalHealth
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3500 - Local Oversight Program
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PR0544595
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ARCHIVED REPORTS XR0003439
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Entry Properties
Last modified
6/24/2019 11:52:43 AM
Creation date
6/24/2019 11:10:47 AM
Metadata
Fields
Template:
EHD - Public
ProgramCode
3500 - Local Oversight Program
File Section
ARCHIVED REPORTS
FileName_PostFix
XR0003439
RECORD_ID
PR0544595
PE
3528
FACILITY_ID
FA0002048
FACILITY_NAME
TESORO (Shell) 68221(WRR 6290)
STREET_NUMBER
2705
STREET_NAME
COUNTRY CLUB
STREET_TYPE
BLVD
City
STOCKTON
Zip
95204
APN
12121008
CURRENT_STATUS
02
SITE_LOCATION
2705 COUNTRY CLUB BLVD
P_LOCATION
01
P_DISTRICT
003
QC Status
Approved
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EHD - Public
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FIELD METHODS AND PROCEDURES <br /> 1 0 GROUND WATER AND LIQUID-PHASE PETROLEUM HYDROCARBON <br /> DEPTH ASSESSMENT <br /> A water/petroleum interface probe was used to assess the thickness of liquid-phase petroleum hydrocarbons (LPH), <br /> if present and a water level indicator was used to measure ground water depth in monitoring wells that did not <br /> contain LPH Depth to ground water was measured from the top of each monitoring well casing The tip of the <br /> water levc,l indicator was subjectively analyzed for LPH sheen <br /> 2 0 SUBJECTIVE ANALYSIS OF GROUND WATER <br /> Prior to purging, a water sample was collected from the momtonng well for subjective analysis The sample was <br /> retrieved b,, gently lowering a clean, disposable bailer to approximately one-half the bailer length past the air/liquid <br /> interface, The bailer was then retrieved and the sample contained within the bailer was examined for floating LPH <br /> and the, appearance. of a petroleum sheen <br /> 3 0 MONITORING WELL PURGING AND SAMPLING <br /> Monitoring vNells were purged using a submersible pump or bailer until pH, temperature and conductivit3 of the <br /> purge, eater had stabilized and a minimum of three to four volumes of water had been removed Ground water <br /> rc,mmcd from the; «ells «as stored in 5�-gallon barrels at the Site The barrels were labeled with corresponding <br /> monitoring ,.Nell numbers and the date of purging After purging ground dater levels were, allowed to stabilize A <br /> ground «atcr sample was then removed from each of the wells using a disposable bailer If the well was purged <br /> dry, it was allowed to sufficiently recharge and a sample was collected Samples were collected in air-tight vials, <br /> appropriately labeled, and stored in an ice chest from the time of collection through the time of delivery to the <br /> laboratory A sham-of-custody form was completed to ensure sample integrity, and document possession of the <br /> sample Ground water samples were transported to the laboratory and analyzed within the EPA-specified holding <br /> times for the requested analyses Purge water will be collected from the storage barrels in a vacuum truck and <br /> transported to an appropriate facility for treatment and/or disposal <br /> LRP011 809 <br />
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