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ARCHIVED REPORTS_XR0004590
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2900 - Site Mitigation Program
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PR0507835
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ARCHIVED REPORTS_XR0004590
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Last modified
3/5/2020 12:14:37 PM
Creation date
3/5/2020 11:54:25 AM
Metadata
Fields
Template:
EHD - Public
ProgramCode
2900 - Site Mitigation Program
File Section
ARCHIVED REPORTS
FileName_PostFix
XR0004590
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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C',006gica t reChnics in C. <br /> ' 1101 T°Street <br /> Modesto,California 95354 <br /> (209)522-4119/Fax#522-4227 <br /> REPORT <br /> Groundwater Monitoring <br /> ' I" Quarter 2004 <br /> Cardoza <br /> Super Stop Market <br /> 290 N. Main St. <br /> Manteca, CA <br /> I <br /> Project No 662 2 <br /> April 12, 2004 <br /> EXECUTIVE SUMMARY <br /> ' This report summarizes the I" Quarter 2004 groundwater monitoring event that took place <br /> on February 12, 2004 The laboratory analyses reveal that low to moderate concentrations <br /> of the oxygenated fuel compound MTBE was detected in four of the site's five wells New <br /> extraction well EW-1 contained 120 ug/I MTBE BTEX and TPH-G were not detected in <br /> any of the groundwater samples This data is consistent with past events <br /> In accordance with San Joaquin County directives, the groundwater samples were also <br /> analyzed for diesel, methanol, ethanol, ETBE, DIPE, TAME, TBA, 1,2-DCA, EBD and <br /> lead The samples did not contain any of these constituents above the laboratory reporting <br /> ' limits <br /> An additional deep well was installed at the site on May 30, 2002 Well MW-104 was <br /> ' placed on the eastern edge of the former UST excavation This well contained minor <br /> concentration of MTBE for the seventh consecutive event <br /> The average elevation of groundwater at the site was 10 21 feet mean sea level, or <br /> approximately 29 feet below grade Groundwater gradient calculations show that <br /> ' groundwater flow was N56°E with a slope of 0 001 ft/ft The predominant groundwater <br /> direction has been to the east-northeast during the investigation <br />
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