Laserfiche WebLink
GROUND ZERO ANALYSIS, INC. <br /> 1714 Main Street <br /> Escalon, California 95320-1927 <br /> Telephone (209)838-9888 <br /> Facsimile (209)838-9883 <br /> October 4, 2002 <br /> OCT 0 7 2002 <br /> ENVIRUNMENI HEALTH <br /> Mr MichaelInfurna PERMIT/SERVICESSan Joaquin County Environmental Health Department <br /> 304 East Weber Avenue, Third Floor <br /> Stockton, CA 95202 <br /> Subject Third Quarter 2002 Groundwater Monitoring and Sampling Report <br /> Former Harry's Auto Mart <br /> 2662 N Wilson Way, Stockton, CA(Site Code 13 06) <br /> Dear Mr Infurna <br /> This letter report presents the results of the third quarter 2002 groundwater monitoring and sampling <br /> activities at the subject site (Figure 1) <br /> SITE ACTIVITIES <br /> Activities at the site included monitoring water level elevations, and purging and sampling groundwater <br /> from site wells and U-Haul well MW7 Samples were analyzed for total petroleum hydrocarbons as <br /> gasoline (TPHg), benzene, toluene, ethylbenzene, total xylenes (BTEX), gasoline oxygenate additives, <br /> 1,2-dichloroethane(1,2-DCA), and ethylene dibromide (EDB) <br /> FIELDWORK <br /> Groundwater Monitoring and Sampling <br /> On September 18, 2002, water levels in wells MW 1 through MW4 and U-Haul well MW7 were <br /> monitored Groundwater elevations were calculated by measuring the depth to groundwater in each site <br /> well and subtracting the depths from the respective wellhead elevations Depth to water in the wells <br /> ranged from 59 09 to 6139 feet below ground surface (bgs) Well MW2 was dry Groundwater fell an <br /> average of 5 81 feet since last measured on June 27, 2002 <br /> iThe calculated hydraulic gradient at the site was approximately 0 062 ft/ft or 327 fthrule Apparent flow <br /> was in a west-southwesterly direction Compared to previous results the gradient calculated during this <br /> \1CZA_FS\SYSO1\Data\GROi]NDZEIHARRYS\Repolls\QMR\2002\3QM2002 doc <br />