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INUMI <br /> I <br /> Nations uroundwater Associates 0 <br /> HYDROGEOLOGISTS&GEOLOGISTS <br /> October 31, 1990 <br /> Mr. Harlan Knoll t <br /> San Joaquin County Public Health Services <br /> Environmental Health Division <br /> P.O. Box 2009 Nov 5 !^`lq <br /> Stockton, California 95201 - 4�Nr1�ENTA HFALTH <br /> Subject: Bi-Annual Ground-Water Monitoring ReportERMIf/SERv,+ ,,3 <br /> Lockeford Beacon Mini-Mart <br /> 13975 Highway 88-E <br /> Lockeford, California <br /> NGA Project No. 10-90-104 <br /> Dear.Mr. Knoll: <br /> Nations Groundwater Associates (NGA) has been authorized to submit <br /> this Bi-Annual Ground-Water Monitoring Report on behalf of Mr. Bob <br /> Phillips, owner of .the subject . service station and convenience <br /> I. ._: store: Figures 1 and 2 show the site location and site facilities. <br /> The following sections of this report describe the results of -the <br /> most recent sampling event at the site. <br /> Scope—of Work <br /> The scope of work for this report includes the following <br /> activities. <br /> Collection of water level elevation data in September, <br /> € 1990. <br /> a Preparation of a map depicting the elevation of the <br /> ground-water surface at the site in September, .199.0. <br /> o Purging of a minimum of three casing volumes. of water <br /> from each monitoring well and collection of ground water <br /> samples. Samples were stored in an iced cooler under <br /> Chain-of-Custody until delivery to a California-certified <br /> j laboratory. Ground-water samples were analyzed for <br /> benzene, toluene, ethylbenzene, xylersF' :(BTFX) ; and total <br /> purgeable hydrocarbonp (TPH): by EPA ':hod 8260. <br /> • Preparation of this b -annual monitorint: '•sport. <br /> 3050 Fite Circle,Suite 101 Sacramento,California 95827 t5=1361-8095 <br /> (V16)362-1380 FAX <br />