Laserfiche WebLink
California Regional Water Quality Control Board <br /> Central Valley Region <br /> Robert Schneider,Chair <br /> Winston H.Hickox Gray Davis <br /> Secretary for Sacramento Main Office Governor <br /> Environmental Internet Address: http://www.swrcb.ca.gov/—rwgcb5 <br /> Protection 3443 Rouder Road,Suite A,Sacramento,California 95827-3003 <br /> Phone(916)255-3000•FAX(916)255-3015 <br /> 19 August 2002 <br /> Mr. Sheldon Heckman <br /> c/o Kama E. Herrigfeld <br /> Herum Crabtree Brown <br /> 2291 W. March Lane, Ste. B-100 <br /> Stockton, CA 95207 <br /> QUARTERLYREPORT—SECOND QUARTER 2002, FORMER CONNELL MOTOR LIFT <br /> TRUCK, 22111VORTH WILSON WAY, STOCKTON, SAN JOA QUIN COUNTY <br /> We have reviewed the Quarterly Report—Second Quarter 2002, Former Connell Motor Lift Truck, <br /> 2211 North Wilson Way, Stockton, San Joaquin County (Report), dated 18 July 2002, and submitted on <br /> your behalf by Advanced GeoEnvironmental, Inc. (AGE). The Report provides the groundwater <br /> analytical results of the May 2002 quarterly groundwater monitoring event. <br /> The Report states that all groundwater samples were analyzed in accordance with the Regional Water <br /> Quality Control Board, Central Valley Region (Regional Board) guidance for investigation of <br /> underground storage tanks. Groundwater samples were analyzed for total petroleum hydrocarbons as <br /> diesel (TPH-d), as gasoline (TPH-g), as Stoddard solvent(TPH-ss), and motor oil(TPH-mo);benzene- <br /> tolune-ethylbenzene-xylenes (BTEX); volatile organic compounds (VOCs); and fuel oxygenates, <br /> including methyl tert-butyl ether(MtBE). Maximum groundwater concentrations for May 2002 were: <br /> TPH-d (9,300 µg/L), TPH-g (15,000 µg/L), TPH-ss (9,500 gg/L), TPH-mo (930 gg/L),benzene(3.6 <br /> gg/L), MtBE (7.7 gg/L), and VOCs (1,2-dichlorethane or 1,2-DCA, 34 gg/L). <br /> The Report states that the vertical and lateral extents of the 1,2-DCA groundwater plume between the <br /> intermediate and deep zones have not been defined. <br /> The Report recommends: <br /> • Continuing the quarterly groundwater monitoring, <br /> • Conducting one year of groundwater monitoring before characterizing the vertical extent of the <br /> 1,2-DCA plume (by discreet depth sampling or an additional deep screened monitoring well), <br /> and <br /> • Preparing a site assessment report (SAR) and a corrective action plan (CAP). <br /> California Environmental Protection Agency <br /> �a Recycled Paper <br />