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Quik Stop Station No 076 September 26, 2006 <br /> Stockton California Quarterly Groundwater Monitoring Re ort <br /> r <br /> r, <br /> Groundwater Monitoring Results <br /> �iThe depth=to-groundwater was measured at 59 75 feet from the TOC Groundwater � <br /> analytical results are summarized in Table 1 The groundwater analytical report is <br /> contained'in Attachment C <br /> GeoTracker Electronic Data Deliverables <br /> 6 -The analytical electronic data deliverable (EDD) file (EDF) was prepared by Kiff and <br /> uploaded by Horizon The groundwater level EDD (GEO_WELL) was prepared and <br /> uploaded by Horizon The laboratory analytical EDD and groundwater well <br /> measurement EDD (GEO_WELL)_upload confirmation sheets for this quarter and the <br /> Quarterly Monitoring Report EDD (GEO-REPORT) upload confirmation sheet for the <br /> previous quarter are contained in Attachment D <br /> Conclusions and Recommendations <br /> Groundwater monitoring well MW-1 was replaced in June 2005 The re-installation of <br /> monitoring well MW-1 was documented in a letter report dated June 20, 2005 and <br /> submitted to the San Joaquin County Environmental Health Department <br /> ,Analytical results of groundwater samples collected from monitoring well MW-1 during <br /> the previous four quarters (third quarter 2005 throughec�nd quarter 2006} indicate <br /> TPHg concentrations only ranging from 1400 to, icrograms per Mer (parts per <br /> y 014 billion or ppb) in groundwater samples The third quarter 2006 groundwatei sample from <br /> g1ti MW-1 indicates concentrations of 2100 ppb TPHg and 0 68 ppb benzene (reporting limit <br /> 11 0 50 ppb) Horizon recommends continued monitoring to detect concentratlon trends <br /> Report Distribution - <br /> We recommend a copy of this report be forwarded to <br /> Ms Vicki McCartney <br /> San Joaquz'n County Environmental Health Department <br /> 304 East Weber Avenue, Third Floor <br /> Stockton, California 95202-2708 <br /> Mr James Barton <br /> -- - -- -Califomia-Regional-Water Quality Control Board- - - - -- <br /> Central Valley Region <br /> 11020 Sun Center Drive, #200 <br /> Rancho Cordova, California 95670 <br /> • <br /> 7076gmrQ306 doc <br /> Project No 7076 42 2 HORIZON ENVIRONMENTAL INC. <br />