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1 <br /> P�f"`�i i ,t 4.�*ylFllt� <br /> Working To Restore Nature <br /> 15- J IN 2 3 PM 1 x,3 <br /> 1710 Main Street <br /> Escalon, CA 95320 <br /> Phone (209) 838-3507 <br /> FAX (209) 838-3509 <br /> January 18, 1995 <br /> 150075 01 Task 4 <br /> r Michael Infurna <br /> San Joaquin County ublic Health Services <br /> Environmental Health Division <br /> P O Box 2009 <br /> Stockton, CA 95201 <br /> Subject: Fourth Quarter 1994 Groundwater Monitoring Report <br /> King Island Resort, Site Code 1557 <br /> 11530 West Eight Mile Road, Stockton, California15 <br /> Mr. Infurna <br /> • This letter report is submitted to present results of fourth quarter 1994 monitoring and <br /> sampling activities at 11530 West Eight Mile Road, Stockton, California (Plate 1) <br /> GROUNDWATER MONITORING AND SAMPLING <br /> RESNA Industries Inc (RESNpersonnel conducted groundwater monitoring and sampling <br /> at the subject on December 12; 1994 A RESNA technician measured water levels from each <br /> monitoring well prior to purging and sampling Water levels rose an average of 0 58 feet <br /> since September 1994 Groundwater flows to the northeast away from the slough, with a <br /> gradient of approximately 0 059 feet/foot. A groundwater gradient map for December 12, <br /> 1994 is shown on Plate 2 <br /> A RESNA technician collected groundwater samples from wells MW 1 through MW6 in <br /> accordance with the field methods outlined in Attachment 1 Field purge logs are included in <br /> Attachment 2. <br /> Samples were analyzed for total petroleum hydrocarbons as diesel (TPHd), total petroleum <br /> hydrocarbons as gasoline (TPHg), benzene, toluene, ethylbenzene, and xylenes (BTEX) using <br /> EPA Methods 8015 modified and 8020, respectively No petroleum hydrocarbon constituents <br /> were detected in wells MW 1, MW2, MW3, MW5, or MW6. MW4 contained 15 parts per <br /> billion (ppb) benzene and 260 ppb TPHg The approximate extent of dissolved contaminants <br /> i' in groundwater beneath the site is shown on Plate 3. Analytical results are summarized in <br /> 1500751QUARTLYI4QR-1994 dx 1 <br />