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STATE OF CALIFORNIA—ENVIRONMENTAL PROTECTION AGENCY PELT WILSON,Govemor <br /> CALIFORNIA REGIONAL WATER QUALITY CONTROL BOARD— smp - <br /> 0- <br /> CENTRAL VALLEY REGION <br /> 3443 ROUTIER ROAD,SUITE A <br /> SACRAMENTO,CA 95827-3098 <br /> PHONE: (916)255-3000 r <br /> FAX: (916)255-3015RECEV <br /> 3 <br /> NOV 18 1992 <br /> E-AVIRONMENTAL H[---?,I_T'r1 <br /> 16 November 1992 PERM IT/svviGr-3 <br /> Ms. Carrie Cummings <br /> Forward Inc. <br /> P. 0.'. Box 6336 !�� <br /> Stockton,�C.A 0 752-06 <br /> FORWARD LANDFILL, SAN JOAQUIN COUNTY, (Case No.2209) <br /> We have reviewed the construction report for the Class II land treatment units (LTUs) <br /> prepared by Harding Lawson Associates (HLA) dated 6 October 1992 and revised <br /> certification dated 19 October 1992. These lined treatment units were built as part of <br /> waste management unit G, a Class II land treatment unit designated in the facility's <br /> waste discharge requirements (WDRs). The LTUs are designed for biotreatment of soils <br /> contaminated with nonhazardous levels of petroleum hydrocarbons. <br /> The HLA construction report indicates certain problems associated with the installation <br /> and seam testing of the PVC lower liner. However, the CQA officer for HLA, Mr. <br /> Ambrose McCready found the liner and seam conditions acceptable for use in the LTUs. <br /> The report also indicates that native soil used for the upper clay liner was admixed with <br /> imported Ione clay achieve the required 1 x 10-6 cm/s permeability requirement. Test <br /> results of the admixture indicate it meets the permeability requirements. <br /> Based on this information, we approve the LTUs for waste discharge operations in <br /> accordance with the facility's WDRs. If you have any questions, please call Steve <br /> Rosenbaum at(916)255-3131. <br /> WILLIAM J. MARSHALL,Chief <br /> Waste Discharge to Land Unit <br /> SER <br /> cc: Mr. Wade Cornwell,Department of Toxic Substances Control,Sacramento <br /> Mr. Brad Williams,Integrated Waste Management Board,Sacramento <br /> Mr. Mike Kuhn,Integrated Waste Management Board,Sacramento <br /> Mr. Fred Kaufman,San Joaquin County Public Health Services,Stockton <br /> Mr. Donald R. Smallbeck,Harding Lawson Associates,Novato <br /> Mr. Ambrose McCready,Harding Lawson Associates,Sacramento <br />