Laserfiche WebLink
CONDOR EARTH TECHNOLOGIES INC <br /> 188 Frank West Circle Suite I <br /> Stockton CA 95206 <br /> . Phone 209 234 0518 <br /> FAX 209 234 0538 <br />' CONDOR www condorearth com <br /> t FOURTH QUARTER GROUNDWATER MONITORING REPORT <br /> DECEMBER 2004 <br /> ' Condor Project No 3471E <br /> February 8, 2005 <br /> 1 Site Address Eckert Cold Storage Co <br /> 757 Moffat:Blvd <br /> Manteca,California <br /> Client: Mr Pete Thompson <br /> 19901 McHenry Avenue <br /> ' Escalon, California <br /> Primary Agency Harlin Knoll, San Joaquin County Environmental Health Department(SJCEHD) <br /> ' Copy to James Barton, California Regional Water Quality Control Board, Central Valley <br /> Region (CRWQCB) <br /> This is a report of the results of the fourth quarter 2004 groundwater monitonng event conducted on <br /> lieDecember 30, 2004 at the above-referenced site Monitoring wells MW-4, MW-5, MW-7, and MW-8 <br /> were sampled as part of this annual monitonng event Monitor wells MW-5 and MW-8 were re-sampled <br /> on January 10, 2005 because laboratory analytical results of the groundwater samples collected from <br /> ' those wells on December 30, 2004 were inconsistent with historical laboratory analytical results Maps <br /> indicating the site location, monitoring well locations and well-collar elevations (site map), and <br /> groundwater gradient are included as Figures 1, 2, and 3, Attachment A, respectively Also attached are <br /> site background information, historic groundwater monitoring data, field forms, and laboratory analytical <br /> ' reports for the current monitonng event This report has been submitted to the San Joaquin County <br /> Environmental Health Department (SJCEHD) and the California Regional Water Quality Control Board <br /> (CRWQCB), as referenced above <br /> ' Summary of December 30,2004 Quarterly Groundwater Monitoring Event <br /> Field Activit <br /> ' Number of monitoring wells 8 Number of monitoring wells sampled 4 <br /> Number of monitoring wells measured for 8 Date(s)monitored 12/30/04 <br /> water level 01/10/05 <br /> Site Hydrology <br /> ' Average depth to groundwater below 1877 Average increase(+)/decrease(—) in depths to -4 32 feet <br /> monitoringwell measuringoints oundwater since last sampling shallower <br /> Apgroximate grgundwater flow direction I North-northwest <br /> ' Groundwater Contamination: <br /> Wells containing free product None Wells with petrolcurn hydrocarbon odors noted 1 <br /> Nature of contamination Gasoline Range in concentrations <br /> Constituents Benzene(pg/L) <0 5--2,000 <br /> ' Toluene((pg/L) <0 5—3 9 <br /> Ethyl Benzene(;ig/L) <0 5—3 9 <br /> Xylenes(µgJL) <1 0— 12 <br /> TPH-G(mg/L) <0 05—3 9 <br /> ' MTBE(µgfL) <0 5— 19 <br /> 1,2-DCA(µg./L) <0 5— 14 <br /> TBA(µg/L) <5 0— 160 <br /> DIPS{ L) <05-49 <br /> 1 <br />