COMPLIANCE INFO_1996-2003 - Laserfiche WebLink

Home Browse Search

DC(' " Ca ornia a nal Water Quality trol Board Central Valley Region Peter M.Rooney Sacramento Main Office Ed J.Schnabel Secretaryfor Internet Address: httpJ/vrww.svffcb.ca.gov/•-rwgcb5 Chair EnWromnental 3443 Routier Road,Suite A,Sacramento,California 95827-3003 Protection Phone(916)255-3000•FAX(916)255-3015 2 November 1998 FACILITY FILE CARB N CO Y _ �, „_1 f OP,IGINALTO FIL SCJ SUBMITTED BY DATA I Mr.Mike Miller COPY TO Department of Public Works COPY TO City of Stockton COPY TO 425 N.El Dorado Street COPY TO Stockton, CA 95202-1997 CITY OF STOC%TONAUSTIN ROAD LANDFILL,SAN JOA QUIN COUNTY(CASE NO. 2148) Enclosed are copies of recent inspection reports for your facility. During my inspection last-week I saw considerable progress in preparation for wet weather operations. However, a numb tasks remain to be completed. These include maintenance of perimeter drainage channels,in. l�tion of down drains on side slopes,localized repair of erosion damage and completion of hay placement on side slopes. Another area of concern is cover soil on the landfill. The landfill's waste discharge (WDRs)require compliance with Standard Provisions and Chapter 15 (now Division 2, Title 27) [see WDR Provisions D.1. and D.2.]. The Standard Provisions that require that during the rainy season, a minimum one-foot thickness of low permeability soil be maintained over all but the active disposal area of the landfill. Title 27, §20705(b) requires that intermediate cover be designed and constructed to minimize percolation of liquids through wastes. Broad areas of the landfill's top deck are covered with intermediate cover that consists of loose, silty soil. This intermediate cover was not constructed in a manner necessary to produce low permeability and to minimize percolation through wastes. The numerous leachate seeps experienced at the landfill last winter is additional evidence that the intermediate cover is not minimizing percolation,My conclusion is that a general lack of compactive effort and lack of moisture conditioning during construction resulted in the placement of soils that do not meet the requirements for intermediate cover. The condition of intermediate cover soil should addressed before the rainy season begins. The City needs to reconstruct those areas of intermediate cover that do not comply with the WDRs. The City also needs to demonstrate that intermediate cover is designed and constructed in compliance with the WDRs. Failure to bring the intermediate cover into compliance before the rainy season begins will result in a violation of WDRs and possible enforcement action by the Board. The groundwater treatment system was shut down last week due to mineral deposits clogging the filter media. This condition should be corrected as soon as possible and the extraction system restarted. California Environmental Protection Agency ea Recycled Paper