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I <br /> PACIFIC RIM <br /> i <br /> February 7, 1994u 1 gs <br /> F�r� � C <br /> ENVIRONMENTAL HEALTH <br /> HEADQUARTERS Linda Turkatte PERMIT SERVICES <br /> Senior REHS <br /> Environmental Health Division-San Joaquin County <br /> 445 N.San Joaquin Street <br /> Stockton, CA 95201 <br /> 2525 Van Ness Ave. <br /> Suite 211 RE: Bioremediation- 15 East Grant Line Road Site Code: 1404 <br /> _ Tracy,CA — <br /> San Francisco <br /> California 94109 Dear Ms. Turkatte: <br /> We are in receipt of your letter to John Johnson of the Customer Company regarding the <br /> utilization of our.bioremediation technology at the above site. We do not feel that the proposal <br /> is premature and would like to respond to your letter outlining the CVRWQCB's concern's and <br /> Post Office Box 192972 the deficiencies of our proposal for bioremediation. <br /> i <br /> San Francisco Your letter outlined five areas of deficiency, I would like to address each one of these areas. <br /> Soi i&points were addressed in the addenduin'leffei of',Dee"eiriber 45 1994 by�Dn Don <br /> McEdwards'of Trans- ech'which was sent ' ' <br /> ou and theCVRW CB. <br /> California.94119 Q •' <br /> 1)"Site'Assessment to deter»tine fit 11.extent o f th'e contamination is not yet`coinplete: <br /> We are aware-that'further characferization of the site is required. This point was addressed by <br /> Phone:415-255-0860 Dr. Don McEdwards in his letter dated December 15, 1994. In order to determine the full <br /> I <br /> extent of contamination at the site we have proposed to advance an additional 10 borings on the <br /> Fax:415-431-0334 site inthearea that has yet to be defined. Two of these borings will be developed as monitoring <br /> wells at locations northeast and west of the former tank excavation. <br /> 2) The soil at the site should be characterized for the following; moisture content,porosity, <br /> BRANCH OFFICE nitrogen content,phosphorous content, and natural.,'•occurring biological content. <br /> 'Sufficient information regarding the soil characteristics is supplied in subsurface investigation <br /> reports supplied by Parker Environmental. The soil at the site is classified as silty and sandy <br /> clays and fine to medium grain sands. These conditions provide an excellent:environment for <br /> 3101 Sillect Ave. our application. <br /> Suite 105 The H-10 microaerophilic bacteria are already fully nutrient loaded prior to inoculation. <br /> Nitrogen,phosphorous and the naturally occuring biological content have no significant impact <br /> Bakersfield on the effectiveness of the H-10 bacteria. <br /> California 93308 3)Ground water pumping and vap`dr ixtraction tests should be performed at the site. <br /> Gtoundwaterpumping and vapor extraction'tests are=not appUable,for this bioremediation <br /> approach,which isalso a less expensive than piinip and treator soil vapor extraction <br /> technologies:'' ..:.,, <br /> Phone:805-326-0173 <br /> I <br /> Fax:805-326-0527 <br /> I <br />