Laserfiche WebLink
1 <br /> 1n -t�l <br /> E <br /> � 1 <br /> GROUND ZERO ANALYSIS, INC. <br /> 1714 Main Street <br /> Escalon,California 95320-1927 <br /> Telephone (209)838-9888 <br /> Facsimile (209)838-9883 <br /> June 26, 2000 <br /> Mr Jeffrey Wong <br /> San Joaquin County Public Health Services <br /> Environmental Health division <br /> 304 East Weber Avenue, Thud Floor <br /> Stockton, CA 95202 <br /> Subject Second Quarter 2000 Groundwater Monitoring and Sampling Report <br /> Speedy Mart, 8200 N Highway 99, Morada, CA <br /> .l Dear Mr Wong <br /> This letter report presents the results of the groundwater morutoring and sampling activities at the <br /> subject site(Figure 1)for the period ending June 30, 2000 <br /> SITE ACTIVITIES <br /> Activities at the site included monitoring groundwater levels, purging and sampling groundwater from <br /> site wells, analyzing samples for total petroleum hydrocarbons as gasoline (TPHg), benzene, toluene, <br /> ethylbenzene, total xylenes (BTEX), 1,2-dichloroethane (DCA), ethylene dibromide (EDB), <br /> oxygenated gasoline additives, and prepanng this technical summary report <br /> FIELD WORK <br /> Groundwater Monitoring and Sampling <br /> An experienced Ground Zero Analysis, Inc (Ground Zero) technician monitored and sampled wells <br /> MW 1 through MW4 on June 13, 2000 Groundwater elevations were calculated by measuring the <br /> depth to groundwater in each well and subtracting from the respective wellhead elevation <br /> Groundwater rose an average of 3 86 feet since last monitored on October 13, 1999 Groundwater <br /> flow was in a northeast direction with a hydraulic gradient of approximately 0 004 ft/ft A <br /> potentiometnc surface map generated using the June 13, 2000 monitoring data is presented on Figure <br /> 2 Groundwater monitoring data are summarized in Table 1 and field data sheets are included in <br /> Attachment A <br /> F 1DatalGROUNDZF\TUL FBURG\Rcports12QM2000 doe <br />