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ARCHIVED REPORTS XR0009838
EnvironmentalHealth
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EL DORADO
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3500 - Local Oversight Program
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PR0544710
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ARCHIVED REPORTS XR0009838
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Last modified
7/30/2019 1:50:42 PM
Creation date
7/30/2019 1:10:36 PM
Metadata
Fields
Template:
EHD - Public
ProgramCode
3500 - Local Oversight Program
File Section
ARCHIVED REPORTS
FileName_PostFix
XR0009838
RECORD_ID
PR0544710
PE
3528
FACILITY_ID
FA0006247
FACILITY_NAME
Western Lift
STREET_NUMBER
3430
Direction
S
STREET_NAME
EL DORADO
STREET_TYPE
ST
City
STOCKTON
Zip
95206
APN
17525063
CURRENT_STATUS
02
SITE_LOCATION
3430 S EL DORADO ST
P_LOCATION
01
P_DISTRICT
001
QC Status
Approved
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EHD - Public
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' Bank of Stockton Cutter Lumber Site Page 3 <br /> Quarterly Groundwater Monitoring Report <br />' Project No 102 2 <br /> . July 5, 2001 <br />' 2.0 GROUNDWATER MONITORING <br />' The following sections describe the procedures associated with the completion of <br /> groundwater monitoring at the site along with documenting the disposal of the <br /> well purge water associated with groundwater monitoring activity <br /> 2.1 Groundwater Sample Collection <br />' On June 7, 2001, Del-Tech Geotechnical Services of Oakdale, CA mobilized to <br /> the site to complete groundwater monitoring The groundwater monitoring <br /> procedure was as follows Upon arrival, each well was opened and the water <br /> level allowed to equilibrate As each well was opened, and prior to taking the <br /> depth to groundwater measurement, a PID organic vapor meter was used to <br /> screen for VOC's in the head space of the well The depth to groundwater was <br />' then measured by lowering an electronically actuated air / water interface <br /> detector suspended from a polyethylene measuring tape calibrated to the nearest <br />' 0 01 foot (see groundwater monitoring data sheets in Appendix B) A careful <br /> notation made of the depth to groundwater as measured by the device No <br /> measurable free product was observed in the wells. <br />' • Each well was pumped with a dedicated Wattera pump or by inserting a <br /> submersible pump into the well and lowering it to bottom Well water was <br />' containerized in 55-gallon DOT approved polyethylene drums, properly labeled, <br /> and temporarily stored on-site The rate of well purging was monitored, and <br /> each well was purged of at least three casing volumes or until the groundwater <br />' parameters (temperature, conductivity, and pH) had stabilized indicating that <br /> water representative of actual aquifer conditions was entering the well <br /> Groundwater parameter stabilization was characterized by three successive <br />' readings within 10 percent After the wells had been allowed to recharge to at <br /> least 80 percent of their original volume, samples were collected from them <br />' using methods described below <br /> A stainless steel bailer belayed on a clean stainless steel line was used to collect <br />' each sample Bailer cleanliness was verified by collecting a bailer blank <br /> (pouring distilled water through the bailer and collecting it in a VOA vial) prior <br /> to collecting the analytical sample Before and in between uses, all sampling <br />' equipment was washed using a portable steam cleaner Disposable gloves were <br /> worn by the sampling technician while collecting all samples The gloves were <br /> changed between the collection of each sample to reduce the potential for cross- <br /> contamination <br /> • <br />' 2937 Vene man Ave ,#B240 Geo-Phase Environmental Inc Phone (209) 569-0293 <br /> Modesto, CA 95356 Fax (209) 569-0293 <br /> I <br />
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