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ARCHIVED REPORTS_XR0004859
EnvironmentalHealth
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2900 - Site Mitigation Program
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PR0505329
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ARCHIVED REPORTS_XR0004859
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Entry Properties
Last modified
3/4/2020 9:09:52 AM
Creation date
3/4/2020 8:49:15 AM
Metadata
Fields
Template:
EHD - Public
ProgramCode
2900 - Site Mitigation Program
File Section
ARCHIVED REPORTS
FileName_PostFix
XR0004859
RECORD_ID
PR0505329
PE
2950
FACILITY_ID
FA0006715
FACILITY_NAME
TRACY COLD STORAGE INC
STREET_NUMBER
24500
Direction
S
STREET_NAME
MACARTHUR
STREET_TYPE
DR
City
TRACY
Zip
953780420
APN
25024001
CURRENT_STATUS
02
SITE_LOCATION
24500 S MACARTHUR DR
P_LOCATION
03
P_DISTRICT
005
QC Status
Approved
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SJGOV\sballwahn
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EHD - Public
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AGS recommends that the collection and analysis of water samples from the two <br /> ' domestic water supply wells be suspended. The December 1998 sampling event marked <br /> the second round of samples collected at these two wells following the remedial soil <br /> ' excavation. Analytical data indicate no adverse impact to these wells, either prior to or <br /> following the remedial excavation activities. <br /> AGS further recommends that monitoring wells MW-5, MW-7 and MW-9 be removed <br /> from the quarterly ground water monitoring program. Historical analytical data indicate <br /> that these wells have shown non detectable levels of gasoline and BTEX throughout their <br /> ' sampled history with the exception of the first sampling event at MW-9. This includes 17 <br /> sampling events at MW-5, and 12 events each at MW-7 and MW-9. <br /> Monitoring well MW-5 is located across the gradient and MW-7 is located upgradient <br /> from the former UST location. Wells MW-5 and MW-7 should be retained as ground <br /> water level measuring points for the purpose of determining the ground water gradient <br /> ' during future sampling events. <br /> Monitoring well MW-9 was installed down gradient from the former UST location, but <br /> ' was screened through the second aquifer to determine the vertical extent of impact. Since <br /> the ground water contaminant plume is well defined, both laterally and vertically, this <br /> '. well no longer provides significant data for'site characterization. Consequently, it is <br /> recommended that MW-9 be destroyed in accordance with California State well <br /> standards. <br /> The next sampling event is scheduled to take place in mid March, 1999. <br /> • CA95DE-029 American Geological Services, Inc. <br /> ' <br /> 11 <br />
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