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Margaret La orio EH f <br /> �h <br /> . S . <br /> From: janes.elizabeth@epamail.epa.gov <br /> Sent: Friday, November 14, 2003 12:48 PM <br /> To: Margaret Lagorio [FH] <br /> Subject: Sampling criteria <br /> Hi Margaret: per our conversation here are some thought's on waiving <br /> sampling <br /> 1. SJCEHD can summarize what has been found to date and where samples <br /> have been taken vs. what contaminants are thought to bepart of <br /> methamphetamine processing waste - any theories on why none is found <br /> when samples taken? <br /> 2. owner/operator or consultant for sites can respond to the items <br /> below I <br /> System originally constructed to dispose of <br /> sanitary waste <br /> stormwater <br /> other (describe) <br /> Endangering use was: (describe) <br /> Endangering use period from (month/year) to (month/year)' <br /> i <br /> Percolation rate in area: <br /> Depth to seasonal high water table: <br /> Is the site located in a designated recharge area for a .public water <br /> supply system drinking water source? (ask PWS or DHS) <br /> Depth of deepest component of disposal system: <br /> Location nearest downgradient drinking water well <br /> Sampling of downgradient drinking water well shows� no relevant <br /> constituents ; <br /> no observable clues that system (if it was constructed to treat sanitary <br /> waste) is failing in that regard, i.e. , there is no surfacing effluent <br /> above leachfield <br /> If system is going to be returned to service as an onsite wastewater <br /> treatment system, it should be pumped of all solids by a' licensed waste <br /> hauler who could sample just that? <br /> If system is not going to be returned to service, date that devices will <br /> be removed and site backfilled k <br /> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . # <br /> Elizabeth Janes �n�ers— �ro � <br /> (415) 972-3537 <br /> FAX (415) 94 7-354 9 Ql k5la 4,-s C.u55 e d Lxs+%�l <br /> USEPA Region 9 Ground Water Office (WTR9) � �� GC.vtia 0-f <br /> Underground Injection Control Program ski <br /> 75 Hawthorne Street, SF, CA 94105 S <br /> U i ru <br /> ' <br />