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STATE OF CALIFORNIA — ENVIRONMENTAL PROTECTION AGENCY PETE WILSON, Governor <br />CALIFORNIA REGIONAL WATER QUALITY CONTROL BOARD— <br />CENTRAL VALLEY REGION - <br />3443 ROUTIER ROAD, SUITE A <br />SACRAMENTO, CA 95827-3098 <br />PHONE: (916) 255-3000 <br />FAX: (916) 255-3015 <br />18 February 1993 <br />Ms. Stacie Rindge, <br />Forward Inc. <br />P.O. Box 6336 <br />Waste Evaluation Coordinator <br />Stockton, CA 95206 <br />FEB 23 1393 <br />ENVIRONMENTAL HEALTH <br />PERMIT/SERVICES <br />FORWARD LANDFILL, SAN JOAQUIN COUNTY, (Case No. 2209) <br />Jon Marshack of our Environmental/Technical Support Unit and I have reviewed your <br />submittal of 27 January 1993, requesting revised Designated Levels for the Class III <br />landfill unit(s) at the Forward Inc. facility. The attached table contains corrections to your <br />proposed levels, based on the most current water quality limitations to protect ground <br />waters for municipal, domestic, and agricultural beneficial uses. To implement these <br />designated levels, Forward's Monitoring and Reporting Program would need to be <br />revised. Such revisions will coincide with other revisions needed to implement a new <br />Article 5 monitoring program for your facility. <br />Your letter also requested using "non -detect" as the measure of compliance when <br />calculated designated levels are below the detection limit of the appropriate SW -846 <br />analytical method. We have no problem with that concept, provided that detection limits, <br />and not quantitation limits, are used as the cutoff for waste acceptance decisions. Trace <br />results (between detection and quantitation limits) must be reported by the analytical <br />laboratory. The laboratory must utilize the most stringent applicable analytical method <br />for the constituent, and the method must achieve analytical detection limits as close to <br />EPA Method Detection Limits as practicable. In these situations, a trace results or a <br />quantified results would indicate that the waste was a designated waste. Results below <br />the detection limit would mean that the waste was acceptable for discharge to the Class <br />III landfill. <br />Please call Jon Marshack at (916) 255-3123 or Steve Rosenbaum at (916) 255-3131 if you <br />have questions regarding this matter. <br />WILLIAM J. MARSHALL, Chief <br />Chapter 15 Unit <br />