Laserfiche WebLink
Qutk Stop Station No 039 March 1, 2004 <br /> Stockton, California_ _ Quarterly Groundwater Monitoring Report <br /> methyl ether (TAME), tert-butanol (TBA), and 1,2-dichloroethane (DCA) by <br /> Environmental Protection Agency (EPA) Method 8260B <br /> Groundwater Monitoring Results <br /> Depth-to-groundwater measurements were subtracted from the surveyed TOC elevations <br /> to calculate static groundwater elevations Groundwater elevation data was used to <br /> construct a groundwater contour map (Figure 2) The groundwater flow direction for this <br /> sampling event was toward the north under a gradient of approximately 0 001 <br /> Groundwater analytical results are summarized in Table 1 Groundwater analytical <br /> reports and the COC document are contained in Attachment C On February 3, 2004, <br /> Horizon transported the monitoring well purge water to InStrat, Inc in Rio Vista, <br /> California for disposal A payment receipt for acceptance of the purge water is contained <br /> in Attachment D <br /> GeoTracker Electronic Data Deliverables <br /> The analytical electronic data deliverable (EDD) is uploaded by Kiff The groundwater <br /> well measurement file EDD for this quarterly monitoring event has been uploaded by <br /> Horizon The GEO_WELL file upload confirmation sheet for this quarterly event is <br /> • contained in Attachment D <br /> Recommendations <br /> Horizon recommends continuous quarterly monitoring during the ongoing investigation <br /> On February 26, 2003, Horizon submitted Results of the Additional Subsurface <br /> Evaluation and Work Plan Addendum dated February 14, 2003 Review and comment by <br /> the San Joaquin County Environmental Heath Department is pending <br /> 7039gmr04QE doe <br /> Project No 703945 2 HORIZON ENVIRONMENTAL INC <br />