Laserfiche WebLink
• Mr George Takemori Project OF90-002 04 <br /> May 1, 1995 <br /> Page 3 <br /> • A 2-inch-diameter casing will be installed in the boring to a depth of 15 feet below first- <br /> encountered groundwater unless a clay aquitard is encountered prior to reaching this <br /> depth, which would restrict air spargmg Approximately 2 feet of 0 02 slotted pipe will <br /> be placed at the termination depth of the boring and surrounded with sand filter pack <br /> The remaining piping will consist of schedule 40 polyvinyl chloride pipe from above the <br /> slotted section to ground surface The annular space above the filter pack will be sealed <br /> with bentonite and neat cement. <br /> • Drill cuttings will be placed on and covered with visqueen Four soil samples from the <br /> drill cuttings will be L ollected and composited into one sample at the laboratory for <br /> analysis to evaluate disposal options <br /> • Soil cuttings from drilling operations will be sampled for TPHG using Environmental <br /> Protection Agency (EPA) Method 8015, BTEX using EPA Method 8020, resistivity, <br /> (.orrosivrty, igrutability (RCI), .ind total lead (Pb) using EPA Method 7410 It is <br /> anticipated that soil cuttings from this boring will be clean and can be used at the site <br /> . • EMCON will develop the air sparge well <br /> DATA EVALUATION AND REPORT PREPARATION <br /> • Results of the air sparge well installation activities will be presented in a quarterly status <br /> report The report will include EMCON's interpretation, conclusions, and <br /> recommendations <br /> DOCUMENT DISTRIBUTION <br /> We recommend copies of this report be distributed to <br /> Ms Linda Turkette <br /> San Joaquin County Public Health Services <br /> P O Box 388 <br /> Stockton, California 95201 <br /> Ms Elizabeth Thayer <br /> Central Valley Regional Water Quality Control Board <br /> 344 Routier Road <br /> Sacramento, California 95827-3098 <br /> SA(VJ0tF9(MF900020 4AS-95 PAS 2 <br />