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ARCHIVED REPORTS_XR0002052
EnvironmentalHealth
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3500 - Local Oversight Program
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PR0545245
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ARCHIVED REPORTS_XR0002052
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Last modified
1/30/2020 11:45:45 AM
Creation date
1/30/2020 10:53:06 AM
Metadata
Fields
Template:
EHD - Public
ProgramCode
3500 - Local Oversight Program
File Section
ARCHIVED REPORTS
FileName_PostFix
XR0002052
RECORD_ID
PR0545245
PE
3528
FACILITY_ID
FA0003730
FACILITY_NAME
TIWANA GAS & FOOD
STREET_NUMBER
1210
Direction
E
STREET_NAME
HAMMER
STREET_TYPE
LN
City
STOCKTON
Zip
95210
APN
09403012
CURRENT_STATUS
02
SITE_LOCATION
1210 E HAMMER LN
P_LOCATION
01
P_DISTRICT
002
QC Status
Approved
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EHD - Public
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AL HORIZON ENVIRONMENTAL INC. <br /> Specialists in Site Assessment,Remedial Testing Design and Operation <br /> r� <br /> January 27, 1999 <br /> Mr Joe Aldridge <br /> Ultramar Inc <br /> 525 West Third Street <br /> Hanford, California 93230 <br /> Subject QUARTERLY GROUNDWATER MONITORING REPORT <br /> Fourth Quarter- 1998 <br /> Beacon Station No 641 <br /> 1210 East Hammer Lane, Stockton, California <br /> Mr Aldridge <br /> Horizon Environmental Inc (Horizon) has prepared this Quarterly Groundwater Monitoring <br /> Report which presents results for the fourth quarter 1998 monitoring activity for the above- <br /> referenced site (Figure 1) There are currently five groundwater monitoring wells (MW-1 <br /> through MW-5) and one sparge well (SWA) associated with this site Wells MW-1, MW-3, <br /> MW-4, and MW-5 are onsite groundwater monitoring wells, while well MW-2 is an offsite <br /> groundwater monitoring well (Figure 2) <br /> Groundwater Monitoring <br /> Depth-to-groundwater measurements were obtained from all the monitoring wells by Doulos <br /> Environmental (Doulos) on December 30, 1998 (see Table 1) Static groundwater levels <br /> were measured from the top-of-casing (TOC) of each well and recorded to the nearest 0 01- <br /> foot Water level measurements were subtracted from reference TOC elevations to obtain <br /> groundwater elevations, as listed an Table 1 Ultramar Field Procedures are presented as <br /> Attachment A, and Doulos Sampling Information Sheets are included as Attachment B <br /> Groundwater samples were collected from all five groundwater monitoring wells The <br /> collected samples were submitted under chain-of-custody protocol to Kiff Analytical (Kiff), <br /> a California Department of Health Services-certified analytical laboratory (ELAN No 2236) <br /> located in Davis, California The groundwater samples were analyzed for total petroleum <br /> hydrocarbons as gasoline (TPHg) utilizing modified Environmental Protection Agency <br /> (EPA) Method 8015, and for the volatile aromatics benzene, toluene, ethylbenzene, total <br /> xylenes (BTEX) and the fitel oxygenates methyl tertiary-butyl ether (MTBE) utilizing EPA <br />.` Method 8020 The laboratory results are summarized an Table 1 Copies of the laboratory <br /> data sheets and the chain-of-custody report are included as Attachment C <br /> 5011 Golden Foothill Parkway,Suite 7 • EI Dorado Hills CA 95762 • (916)939-2170 • FAX(916)939-2172 <br />
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