Laserfiche WebLink
L` II <br /> ENVIRONMENTAL HEALTH DEPARTMENT <br /> opQu'" SAN JOAQUIN COUNTY <br /> �•,=;C�.'-o Unit Supervisors <br /> r` '? Donna K.Heran,R.E.H.S. <br /> 304 East Weber Avenue, Third Floor <br /> Director Carl Borgman,R.E.H.S. <br /> � � s Mike Huggins,R.E.H. R-D-I. <br /> AI Olsen,R.E.H.S. Stockton, California 95202-2708 Douglas W.Wilson,R.E.H.S, <br /> • - a • Program Manager Telephone: (209) 468-3420 Margaret Lagorio,R.E.H.S. <br /> 4 <br /> fro <br /> Laurie A.Cotulla,R.E.H.S. Fax: (209) 464-0138 Robert McClellon,R.E.H.S. <br /> Program Manager Mark Barcellos,R.E.H.S. <br /> NICHOLAS BOKIDES SEP 0 2002 <br /> MEL BOKIDES PETROLEUM INC <br /> 521 W PINE STREET <br /> LODI CA 95240. <br /> s <br /> RE: Mel Bokides Petroleum SITE CODE: 000691 <br /> 8203 Hwy 26 <br /> Stockton, CA 95204 <br /> San Joaquin County Environmental Health Department (EHD) has reviewed the <br /> "Replacement of Well MW-1" dated August 15, 2002 and the "Additional Site <br /> Assessment and Soil Vapor Extraction Feasibility Work Plan' dated August 12, <br /> 2002, prepared by Advanced GeoEnvironmental, Inc. (AGE)for the above <br /> i <br /> referenced site. <br /> The "Replacement of Well MW-1" proposes pressure grouting of MW as the <br /> method of destruction for this well. The well is located in an area of known <br /> contamination so it must be overdrilled (removal of well casing, filter pack and <br /> annular seal) and the bore hole filled with grout. The location of the replacement <br /> well was not shown on a map. <br /> This site has been approved for use as an unmanned card-lock facility only. The <br /> well and septic tank at the site must be destroyed under permit and inspection by <br /> EHD. Unless a well log can be provided that shows the construction of the on <br /> site drinking water well, the casing will have to be perforated and filled with <br /> approved grout from the bottom up.k If explosives will be used to perforate the <br /> casing, the well should be destroyed before the new tanks are installed. <br /> The "Additional Site Assessment and Soil Vapor Extraction Feasibility Work Plan" <br /> proposes installation of six vapor extraction wells (three shallow, three deep). It <br /> proposes installing a shallow and a deep vapor well in the former tank area <br /> where the new tank system will be installed so this location is no longer valid. <br /> Provide a new location for these wells or move:the four remaining wells closer to <br /> the former tank location. The work plan also proposes drilling two soil boring to <br /> define the extent of the soil contamination laterally to 60 feet below surface grade <br /> (bsg). Soil contamination has been documented to 70 feet bsg, so the two <br /> proposed soil borings should be drilled to 80 feet bsg to provide lateral definition. <br /> High levels of soil contamination exist between 35 and 40 feet bsg so the vapor <br /> well screen interval in the shallow wells should -be increased to remediate this <br /> interval. Soil contamination exists at 10 feet bsg so collection of soil samples for <br />