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- FAa 1415 372 3710 HUNTER/GREGG C�j005 <br /> ;. CENTRAL VALL� REGIONAL WATER QUALITY CONTROL B <br /> CARD <br /> INSPEC ft0N-REPORT '::: <br /> JUN 0 5 � <br /> =&=caw <br /> DISCHARGER: Delta Truck Sales 31 May 1989 <br /> LOCATION & COl1M: Stockton, San Joaquin County <br /> Y <br /> CONTACT S : <br /> ( .Ken Smith, President; Mary Varela, Environmental Specialist <br /> INSPECTION DATE: 27 April 1989 <br /> INSPECTED BY: Robert L. Niblack <br /> ACCOMPANIED 8Y: KI n Smith, Mary Varela <br /> OBSERVATIONS <br /> The purpose of this inspection was to sample .a water supply well several <br /> of a surface impoundmentlsubject to regulation by the Toxic Pits Cleanup Act. Accor• <br /> to Mary Varela this well �was probably constructed about 1967: The to feet ethe west <br /> feet, and the screened interval is unknown. total well deppth isd17$ <br /> i <br /> Water samples were collected for analysis by EPA Methods 6OI, 602, and 625, g©r <br /> for major cations and an �vns, pH, EC, fatal dissolved solids, alkalinity, and CAM metals.A portable meter indicat�d H metals. <br /> 460 umho/cm. P of the well water was 7.0, and electrical conductivity was <br /> Samples were taken from a sampling port between the well head and the <br /> Casing is 18 inches in dilameter and a 4-1/2 inch (outside diameter <br /> the top of the casing, pressure tank. <br /> Pipe is cemented into <br /> Mary Varela observed' sampl-,ng of the well . <br /> ANALYTICAL RESULTS <br /> Water samples were analyzed for organic constituents at Enseco Inc <br /> Sacramento. Results of the analyses for halogenated Volatile Organics <br /> Method <br /> in <br /> West <br /> Aromatic Volatile Organics (EPA Method 602) atile 9 (EPA Method 601), <br /> showed none of these constituents were presentin thesamples above Orga the rics eporting limits.625) <br /> Water samples were analyzed for CAM metals by Centralp n9 1�.mi ts. <br /> Obispo. Three metals were found in the samples above the reportingl ' - <br /> present at a concentratidn of 130 ug/L, chrome yeast Analytical Services in San Luis <br /> present at 30 ug/L_ um was present at 9 emit. Barium was <br /> I ug/L, and vanadium was <br /> Water samples were analyzed for general minerals and other water qualityparameters <br /> Sierra Foothill Laboratory in Jackson. Those results are attached to thsrepral at <br /> With the other laborator reports. report along <br />