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ARCHIVED REPORTS XR0009724
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 XR0009724
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Last modified
7/30/2019 1:36:52 PM
Creation date
7/30/2019 12:00:25 PM
Metadata
Fields
Template:
EHD - Public
ProgramCode
3500 - Local Oversight Program
File Section
ARCHIVED REPORTS
FileName_PostFix
XR0009724
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 /> 17 February 2000 <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 />' 21 Groundwater Sample Collection <br />' On 20 January, Del-Tech Geotechnical Services of Oakdale, CA mobilized to the <br /> 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 by inserting a Grundfus or similar submersible pump <br /> into the well and lowering it to bottom Well water was containerized in 55 <br />' gallon DOT approved polyethylene drums, properly labeled, and temporarily <br /> stored on-site The rate of well purging was monitored, and each well was <br /> purged of at least three casing volumes or until the groundwater parameters <br />' (temperature, conductivity, and pH) had stabilized indicating that water <br /> representative of actual aquifer conditions was entering the well Groundwater <br /> parameter stabilization was characterized by three successive readings within <br />' 10 percent After the wells had been allowed to recharge to at least 80 percent of <br /> their original volume, samples were collected from them using methods <br /> described below <br /> 1 <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 /> 2937 Veneman Ave,#5240 Geo-Phase Environmental Inc Phone (209) 569-0293 <br /> Modesto, CA 95356 Fax (209) 569-0293 <br /> I <br />
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