Laserfiche WebLink
0 ' <br /> ��L'1►�"il1 N� <br /> . Letter to Mr Michael Infurna <br /> May 10, 1996 <br /> Page 2 <br /> SJPHS and the Central Valley Regional Water Quality Control Board, Versar is proposing the revised sampling <br /> and analysis plan for each of the soil stockpiles <br /> Stockpile 1 consists of approximately 500 cubic yards (yds3) of backfill material generated during the <br /> removal of the former JP4 underground storage tanks (USTs) in 1992, and the excavated material generated <br /> during the installation of the semi-buried new storage tanks To conduct the confirmation sampling, a total of <br /> six soil saml2les will be collected and submitted to a state-certified laboratory At the laboratory, the six <br /> samples will be composited into two sam les for analysis Based on previous investigation results, each <br /> sample will be analyzed for TPH-JP4 and BTEX <br /> Stockpile 2 consists of approximately 1,440 yds' of soil that originated from excavations conducted at the <br /> former facility wash pad To conduct the confirmation sampling, a total of 12 soil samples will be collected <br /> and cam osited bj the laboratoa into four samples for analysis Based on previous concerns, each composite <br /> sample will be analyzed for TPH-G, TPH-D, TPH-JP4, BTEX, and semi-volatile organic compounds by <br /> modified EPA Method 8270 <br /> All drummed soils will be accumulated into a single stockpile (<13 yd3) at the Site From this material, <br /> one composite sample will be collected for laboratory analyses The composite sample will be analyzed for <br /> TPH-G, TPH-D, TPH-JP4, and BTEX <br /> Versar is currently proposing to conduct fieldwork at the Site in late May or early June 1996 If you have <br /> any questions or comments regarding this workplan addendum, please do not hesitate to call me at (916) 863- <br /> 9326 or Mr Philip Cox at (916) 863-9342 <br /> Sincerely, <br /> Michael P Sellens, R G <br /> Geoscience Department Manager <br /> ?�' 4 <br /> Philip Cox <br /> Staff Geologist <br /> cc Captain Michael Wells, California National Guard <br /> . A K Jain, Division of the State Architect <br />