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<br /> out A visual inspection for leaks on aboveground lines, tanks and double contained system occurs
<br /> during all site visits
<br /> UPDATE STATUS REPORT #48
<br /> Interim groundwater treatment started December 1, 1992 LTT was vacuum lifting (purging)
<br /> monitor wells MW1, MW2, MW3, MW8 and MW10 twice a week until May 1993, at that time the
<br /> purging was reduced to once a week until discontinued on August 30, 1993 Before the well
<br /> purging commenced, water samples were obtained from the "ConVault" tank aerator before
<br /> dumping 800 gallons of this treated water to the sewer lateral, see Update Status Report 41 The
<br /> last ConVault sewer discharges occurred on February 4, 1999, 1000 gallons of treated purged well
<br /> water and condensate was discharged to sewer for a total of 22,422 gallons of treated groundwater
<br /> dumped to the sewer as of February 4, 1999 A continuous LEL reading of the discharge water was
<br /> observed and noted on the following table All discharge requirements were met
<br /> No treated water was dumped to the sewer during the months of March, April, May, June, July,
<br /> August, September, October, November, December, 1996, or January, February, April, May, July,
<br /> August, September 1997, or March, May, June and October 1998, January, March, April, May,
<br /> June, July, August and September 1999 The last sampling of the ConVault treated water
<br /> occurred on January 14, 1999 with results received via Fax on February 3, 1999
<br /> Permit Condition 21.
<br /> "I certify under penalty of law that this document and all attachments were prepared under my
<br /> direction or supervision in accordance with a system designed to assure that qualified personnel
<br /> properly gather and evaluate the information submitted Based on my inquiry of the persons
<br /> directly responsible for gathering the information, the information submitted is, to the best of my
<br /> knowledge and belief, true, and accurate, and complete I am aware that there are significant
<br /> penalties for submitting false information, including the possibility of fine and imprisonment fol
<br /> knowing violations "
<br /> Sincerely yours,
<br /> Sg ature date la
<br /> Jo Zve�-
<br /> Margowski
<br /> Director, Environmental Affairs Wickland Properties George L Converse
<br /> Project Manager
<br /> cc Mi John Margowski, Wickland Properties
<br /> Mr Mike Infurna, Public Health San Joaquin Co
<br /> 2 R-603 WW#48 9/13/99
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