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,r Wright <br /> Environinen— 4I <br /> Services, Inc. <br /> r . <br /> Construction ♦ Engineering ♦ Remeduitlon <br /> October 8, 1999 <br /> San Joaquin County Public Health Services <br /> Environmental Health Division <br /> Ms Carol Oz <br /> 304 E Weber St , Third Floor <br /> Stockton, CA 95202 <br /> Subject M&M Automotive, 60 E Tenth Street Tracy, CA <br /> Dear Ms Oz <br /> Per your letter dated July 23, 1999, you requested manifests for contaminated soil <br /> disposal and information regarding the contaminated groundwater analysis <br /> A total of 277 71 tons of contaminated soil was disposed at Forward Landfill for the <br /> �l above referenced site Enclosed are copies of all the manifests (Attachment A) <br /> Groundwater was observed seeping into the excavation from the bottom and sidewalls at <br /> approximately 10 feet below ground surface (bgs) Samples were collected and analyzed <br /> by GeoAnalytical Laboratories, Inc (Attachment B) Prior to backfilling the excavation <br /> groundwater was pumped into the 6,900-gallon holding tank (Tank A), the quantity of <br /> water pumped to Tank A was approximately 5,300 gallons <br /> Attached is a letter from the City of Tracy regarding the water in Tank A (Attachment C) <br /> Per their request, samples were collected on May 3, 1999, and laboratory analysis of this <br /> stored water was performed and submitted for review (Attachment D) As required, the <br /> water was filtered through activated carbon Prior to doing this, Wright calculated the <br /> carbon required to filter the contaminants from the water (Attachment E) The water was <br /> pumped through a 55-gallon carbon filter and stored in another holding tank (Tank B) <br /> Once this procedure was complete, another analysis was done on the water stored in Tank <br /> B This analysis was performed on May 27, 1999, by Geo Analytical Water analysis <br /> resulted in non detectable concentration of the previously detected contaminates <br /> (Attachment F) These results were submitted to the City of Tracy for review and on June <br /> 30, 1999 verbally permission was received to discharge 5,300-gallons of water into the <br /> City's holding pond for further processing with other municipal wastewater <br /> r <br /> 67 E 10th Street ♦ Tracy,CA 95376 <br /> 209 833 0758 ♦ Fax 209 832 5152 <br /> wright@wreach com Lic #}651501 A-$HaWat ilf. <br /> webset hup//home inreach com/wright <br />