Laserfiche WebLink
..one <br /> KEI-J86-084 <br /> September 12 , 1986 <br /> Page 2 <br /> J tox, <br /> 10�uJ`-3 was drilled and completed to a depth of <br /> p p 20.0 feet. Free <br /> Akground water was encountered at a depth of 6.0 feet . Following <br /> completion of drilling, the static water level remained at this <br /> level . Gasoline odor was noted between 1 .0 and 6.0 feet . <br /> MW-4 was drilled and completed to a depth of 20.0 feet . Free <br /> ground water was found at a depth of 7 .0 feet and remained at <br /> this level following well completion. Gasoline odor was noted <br /> between 1 .0 and 7 .0 feet . <br /> The wells were installed with locking caps and padlocks. <br /> The general ground water trend appears to be in a <br /> north/northeasterly direction. <br /> WELL SURVEY <br /> KEI conducted a review of available information regarding the <br /> location of all known water-supply within a 1/4-mile radius of <br /> the project site . Information was obtained from the State <br /> Department of Water Resources and from the City of Tracy <br /> Utilities Department . The sources of information indicate that <br /> five ( 5) wells are located within a 1/4-mile radius of the site . <br /> Four of these wells are moderately deep extending to a depth <br /> greater than 150 feet. The fifth well extends to a depth of 400 <br /> feet and belongs to the City of Tracy. The City well is used for <br /> domestic purposes , and out of the other four only one is used for <br /> domestic purposes. The remaining are used for irrigation only. <br /> GROUND WATER SAMPLING <br /> The monitoring wells were developed on September 2 , 1986 until <br /> water was clear of visible sediment . Following development , each <br /> well was field-checked for the presence of free-floating <br /> petroleum product or sheen with a clear acrylic bailer . The <br /> water level was also measured. At the time of sampling , no free <br /> product was observed in any of the wells . Petroleum odor was <br /> detected in well MW-3 and MW-4 only. The wells were then purged <br /> about four well volumes prior to sampling . A clean teflon <br /> sampler was used for sampling each well . Each sample was <br /> carefully transferred to clean glass (VOA) vials with teflon <br /> septa screw caps , labeled and stored in an ice cooler and shipped <br /> to the analytical laboratory. <br />