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~ CALIFORNIA REGIONAL WATER QUALITY CONTROL BOARD— <br /> CENTR/1L VALLEY REGION <br /> 344spOunsxROAD <br /> SACRAMENTO,CA 95827'3098 <br /> 18 February l48i; <br /> Mr. 6req Basso <br /> Forward Inc. <br /> Post Office Box 6326 <br /> Stockton, CA 95206 <br /> ^ <br /> DISPOSAL OF LOUISIANA PACIFIC WASTE AT FORWARD LANDFILL, SAN JOAQUIN COUNTY ' <br /> (CASE NO. 2209) , <br /> I have reviewed the analyses you sent with your letter dated 2 February I1988, <br /> Two different wastes were described in the letter, a waste rich in calcium <br /> carbonate, and uood° ash. My comments are as follows: <br /> ` <br /> l, Calcium carbonate waste 7 This waste is a 'designated waste' due to high <br /> nd nickel found using the Waste Extraction Test <br /> (WET) . Class III disposal may take place only under the following <br /> conditions: <br /> a' Mmmmfill - If the wastes are found to be ` inert wastes' based on a <br /> WET using deionized water,, then the wastes may be monofilled in a <br /> Class Ill location where they won't be subject to an acidic <br /> environment, <br /> b, Foundation Layer of a Final Cap -.Wastes maY he used as part of the <br /> foundation layer of the final cap for a landfill Waste Management Unit <br /> (WMU) where: <br /> I) The landfill has an approved closure plan' <br /> i 2) Since the waste is 83% calcium carbonate which is slightly <br /> soluble in water, this waste should be mixed thoroughly with <br /> othe[ soils that will be used in the foundation layer. If ' <br /> incorporated into the cap without mixing, subsidence could occur <br /> as the calcium carbonate is dissolved over the years. <br /> 3) If the wastes are proposed for the founddtion layer of WMUA, Ray <br /> Leclerc at the Department of Health Services must also approve <br /> this method of disposal . <br /> 2. Wood Ash Waste - In a letter dated 8 September 1987, the Department of <br /> Health Services stated that wood ash generated at the Fibreboard Corpora- <br /> tion facility in Antioch is nonhazardous. One of the analyses you sent me <br /> is for ash samples (Lab No. 28278) submitted to Enseco Laboratories. I do <br /> not know if these samples are from the Fibreboard Corporation in Antioch, <br /> or from another facility' I will need to know where these samples are from ' <br />