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Quik Stop 76 June 20, 2005 <br /> Stockton California Re lacement of Monrtorm Well MW-1 <br /> was disposed to Kiefer Landfill in Sacramento County on June 13, 2005 as documented on <br /> the attached landfill scale ticket <br /> On June 6, 2005 Horizon developed and sampled monitoring well MW-1 Well development <br /> and sampling data sheets are attached Initially, the well was surged and bailed to remove any <br /> sediment that collected on the bottom of the well and approximately 5 gallons of the most <br /> turbid water An additional 210 gallons of groundwater were purged from the well with a <br /> submersible pump at a rate of approximately 0 8 gallons per minute The water level in the <br /> well remained within approximately 2 feet of the static water level The pH of the purged <br /> groundwater stabilized at approximately 5 5 No petroleum or cement odors were noted <br /> during the purging process The purge water was disposed to InStrat, Inc (InStrat) of Rio <br /> Vista, California The Non-Hazardous Water Transport Form and InStrat receipt are <br /> attached <br /> The groundwater sample was submitted, with COC documentation, to Kiff and analyzed for <br /> TPHg, BTEX, MTBE, diisopropyl ether (DIPE), ethyl-t-butyl ether (ETBE), tert-amyl methyl <br /> ether (TAME), tert-butanol (TBA), 1,2-dichloroethane and 1,2-dibromoethane by EPA <br /> Method 8260B Groundwater analytical results indicate a TPHg concentration of 160 <br /> micrograms per liter (parts per billion or ppb) and below reporting limits for all other <br /> analytes The groundwater analytical results are summarized in Table 1 The groundwater <br /> analytical report is attached <br /> I <br /> Please call Horizon at 916-939-2170 if you have any questions or require additional <br /> . information <br /> Sincerely, <br /> HORIZON WIRONME�� <br /> REX RD K SMITH <br /> Rexford Smith, P G #530 No 5307 Gary D Barker <br /> Project Manager qj� 49 � Senior Project Manager <br /> OF C <br /> Attachments Figures i and 2 <br /> EDH Correspondence and Well Permit <br /> Typical Well Construction Diagram <br /> Soil Analytical Report <br /> Kiefer Landfill Scale Ticket <br /> Well Development and Sampling Data Sheets <br /> Groundwater Analytical Report <br /> cc Mr Mike Karvelot, Quik Stop Markets <br /> • <br /> M W-1 rpt6-05 <br /> Project No 7076 14 2 HORIZON ENVIRONMENTAL INC. <br />