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5FATEOFCALIFORNIA -CALIFORNIA ENvIRONMENTAL PROTECTION AGENCY PETE WILSON Governor <br /> STATE WATER RESOURCES <br /> CO—ROL 130ARD <br /> DIVISION OF CLEAN MATER PROWWNS <br /> 2014 T STREET, SUITE 130 <br /> P.O.BOX 944212 <br /> HEALTIt <br /> I J <br /> SACRAMENTO, CA 94244-2120 Pppj 3- <br /> � �PVICE <br /> (916) 227-4325 <br /> FACSIMILE (916) 227-4349 095 MAY 21; PH 2-- 32 <br /> MAY 2 21995' <br /> Kevin Allen <br /> Color Spot Incorporated <br /> PO Box 5011 <br /> Richmond, CA 94805 <br /> Dear Mr. Allen: <br /> PETITION, UNDERGROUND STORAGE TANK (UST) LOCAL OVERSIGHT <br /> PROGRAM, SITE NO. 2343, 5400 EAST HARNEY LANE, LODI, CALIFORNIA, SAN <br /> JOAQUIN COUNTY, FILE NO. 93-118 <br /> This is in response to your petition submitted on October 15, 1993. The petition concludes <br /> that further soil and groundwater investigation, as requested by San Joaquin County, is not <br /> warranted and the site should receive closure. As you are aware, we have conducted an <br /> exhaustive review of the petition and other information. It has been mutually agreed upon by <br /> yourself, Diane Hinson of the County, Gordon Lee Boggs of the Central Valley Regional <br /> Water Quality Control Board and myself that additional sampling will be conducted prior to <br /> site closure. The purpose of this sampling is to document that contaminant levels are no <br /> higher, h <br /> t an previous samples. If the levels are no higher than previous samples, the County <br /> will proceed with site closure. The following are recommendations for the sampling of the <br /> wells: <br /> 0 Monitoring well number I (MWI) should be checked to determine if it contains <br /> water. If water is in the well, the well should be redeveloped. After proper <br /> redevelopment, the well should be purged and sampled as per regular protocol (see <br /> attached sampling recommendations). <br /> 0 The pump on the nearest domestic well should be removed prior to sampling. <br /> Purging of this.well would be difficult and, because the well is currently in use, not <br /> . <br /> recommended. 'The sample should be obtained as per regular protocol using the <br /> following parameters: pH, electrical conductivity and temperature. After sounding <br /> for water level, allowing to equilibrate before sampling, samples should be obtained <br /> at the level of the pump. <br /> 0 The samples should be analyzed for all constituents of concern: TPH as gasoline, <br /> TPH as diesel, and BTEX. The laboratory should follow the quality control/quality <br /> assurance (QC/QA) protocols required by the Department of Health Services and <br /> should provide a complete report which includes the QC/QA data and any <br /> abnormalities or interferences observed. <br />