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<s •x r-::°*' em,'x ay;:. r v p•e •s ree., •'.n rte, <br /> 'Beta associates <br /> Consultants in Waste Management,Environmental Control and the Geotechnical Sciences <br /> September 15, 1983 <br /> Project 116-1.4 <br /> California Regional Water Quality Control Board <br /> Central Valley Region <br /> 3201 "S" Street <br /> Sacramento, California 95816 KC <br /> _. <br /> Attention:,, Mr. John Marshak Toxics '(knit <br /> SEP12603 <br /> Subject: Compliance Schedule; a AIN <br /> Board Order Number 83-063; <br /> Forward, Inc. , HEOL _s <br /> Class II - 1 Disposal Site; <br /> San Joaquin County, California, <br /> r <br /> Pursuant to the terms of the subject Board Order, this letter will update ; <br /> our progress in completing the work within the approved time schedule. r <br /> We will be unable to comply with the elimination and excavation of solar <br /> evaporation ponds #1 through #5 by 15, September, 1983. At the date of <br /> thie writing, Ponds #1, #2 and #5 have approximately 1 to 2 feet of fluid <br /> remaining in the pond enclosures. Ponds #3 and #4 are dry, <br /> During August 1983, an interior irrigation system was installed in an <br /> ' effort to accelerate: the rate of.evaporation. This evaporation <br /> enhancement system was successful in accelerating the rate of fluid <br /> evaporation, however, it was not successful in eliminating thO ,remaining <br /> liquids in_a time period which permitted compliance with the approved <br /> time schedule. -we anticipate that the remaining fluid' can be- evaporated <br /> during the week of September 26, 1983. It will then be necessary to <br /> commence removal of drilling mud residue from Pends #3 and #4 and <br /> excavation of tho..,contaminated portion of the floor liners and pond <br /> embankments. <br /> Prior to our excavation and removal of the contaminated embankment and <br /> liner soil, it will be necessary for the Board staff to inform us of the <br /> chloride ion concentration level above which the soils are considered <br /> Group I waste and must be disposed in Trench A. Once this information <br /> is available, we anticipate completion of pond cleaning and excavation <br /> work to be completed by the week of October 10, 1983. The following <br /> paragraphs include a summary of work remaining to be done and;estimated <br /> compliance dates which differ from the approved compliance dates <br /> contained in the subject Board Order. <br /> 1 <br /> r <br /> 5 v <br /> 1365 Vander Way • San Jose, California 95112 • (408) 295-7483 <br /> r <br /> t <br />