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ARCHIVED REPORTS_XR0004575
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2900 - Site Mitigation Program
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PR0507835
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ARCHIVED REPORTS_XR0004575
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Entry Properties
Last modified
3/5/2020 12:46:57 PM
Creation date
3/5/2020 11:38:52 AM
Metadata
Fields
Template:
EHD - Public
ProgramCode
2900 - Site Mitigation Program
File Section
ARCHIVED REPORTS
FileName_PostFix
XR0004575
RECORD_ID
PR0507835
PE
2950
FACILITY_ID
FA0007793
FACILITY_NAME
SUPER STOP MARKET
STREET_NUMBER
290
Direction
N
STREET_NAME
MAIN
STREET_TYPE
ST
City
MANTECA
Zip
95336
APN
22309101
CURRENT_STATUS
02
SITE_LOCATION
290 N MAIN ST
P_LOCATION
04
P_DISTRICT
003
QC Status
Approved
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EHD - Public
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WeofaA real?e'fu 2nc <br /> eETlnstalEatron Report Page 2 <br /> Cardoza(Super Stop) <br /> Project No 662 2 <br /> January 19,2000 <br /> ' were drilled with an 8-inch outside diameter, continuous flight, hollow-stem auger owned <br /> and operated by V&W Drilling (C57# 720904) from Rio Vista, California <br /> ' Monitoring well permits were secured from the San Joaquin County Public Health <br /> Services/Environmental Health Department (SJC PHS/EHD) The Iocal regulatory agency <br /> was notified 48 hours prior to commencing work <br /> ' Soil cuttings and drilling decontamination water were placed in DOT-17 approved 55 gallon <br /> drums and moved to the back of the site until their disposal can be arranged <br /> 2.11 Soil Sampling Procedure <br /> Soil samples were collected for geological and laboratory evaluation at five-foot intervals <br /> from ground surface to total depth A boring log providing sediment description using the <br /> ' USCS and field observations was maintained by a professional geologist working under the <br /> supervision of a registered geologist Soil samples were collected in 6 0-inch brass liners <br /> using a 2 0 inch modified California split spoon sampler All soil samples were sealed with <br /> Teflon sheets, capped with plastic end caps, labeled, and placed in a cooler at 4° Celsius for <br /> transport to the laboratory following Chain of Custody protocol The OVM was used to <br /> screen the soil samples <br /> Details on the geology encountered during the completion of the soil sampling as well as the <br /> field observations are included in Section 3 2, Geology and Field Observations <br /> 2.1.2 Laboratory Analyses <br /> Soil <br /> Three soil samples from each borehole were submitted to Sherwood Laboratories of Hilmar, <br /> California (State Certified Laboratory #1400) for the following analysis <br /> ' • benzene, toluene, ethylbenzene and xylene (BTEX) by EPA method 8020 <br /> • gasoline-range petroleum hydrocarbons (TPH-G) by EPA method 8015(m) <br /> • oxygenated fuel compounds (MTBE, DIPE, ETBE, TAME and TBA) by method 8260 <br /> ' A chain of custody was completed for all samples submitted and tracked to ensure sample <br /> integrity p <br /> 2.2 Monitoring Well Installation <br /> To investigate the presence of gasoline-range petroleum hydrocarbons in the groundwater at <br /> ' this site, Geological Technics Inc installed three groundwater monitoring wells (MW-I, <br /> MW-2 & MW-3) The boring, MW-1, was drilled near the north end of the former tank <br /> location The borings for MW-2 and MW-3 were drilled to the west and south, respectively, <br /> ' of the former tank pit (Figure 2, Site Map) <br /> The monitoring wells were constructed using 2-inch diameter PVC casing with flush threads <br /> ' The table below shows the construction details The filter pack was surged during placement <br /> to insure maximum filter pack density <br /> Well o. Dia./TV Screen ofan ac raps. eaTroea <br /> l san <br /> ' san 8- - <br /> 4fl'_— - san -$-4 <br /> 1 <br />
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