Laserfiche WebLink
I <br /> 7-11/Stockton <br /> April 1989 <br /> 5 <br /> Currently, GTI is proceeding with regularly scheduled <br /> maintenance and monitoring at the site alongwith <br /> and modify (as described in ' ost steps to update <br /> 1988) the remediation system. The Cregularly Proposschedual Of leaember 23, <br /> maintenance and monitoring has included the following: sampling <br /> and water-level monitoring in the groundwater monitoring wells; <br /> sampling from the area domestic wells; recording hydrocarbon- <br /> product levels in the underground storage tank; monitoring and <br /> maintaining the groundwater remediation and soil-vent systems; <br /> and preparation of project update reports and recommendations. <br /> The latest "project Update Report', submitted <br /> bd � 1ary, <br /> includes groundwater-gradient direction maps .and total pet role g <br /> hydrocarbon distribution. Two of these maps are attachedasaum- <br /> reference to the locations selected for the monitoring wells and <br /> the nested monitoring wells (Figures 3 and 4) . The groundwater <br /> gradient direction generally trends toward the east, while the <br /> hydrocarbon plume, evidenced from some of the sampling rounds, <br /> extends toward the north. <br /> The locations of the proposed monitoring wells to the north <br /> w and northwest have been selected in order to investigate possible <br /> upgradient sources which may have resulted in the relatively high <br /> locations of the two proposed monitoring well nests were selected <br /> levels of contaminants on the north end of the project site. The <br /> to determine the vertical extent of contamination below the <br /> - under-ground tank pad and dawngradient (approximately 150 feet) <br /> Of the tank pad. <br /> TECIIA'OWGY INC. <br />