CORRESPONDENCE_2000-2002 - Laserfiche WebLink

Home Browse Search

Mr. Kevin Basso - 3 - 14 August 2002 7. Site-specific conditions at Forward Landfill include a mean annual precipitation of 13.5 inches, and an estimated annual evaporation of 78.43 inches. Dry conditions at the site will tend to limit the production of leachate. The shallow aquifer at Forward is a source of high quality groundwater and is used locally for agricultural and domestic supply. There are other groundwater aquifers available at depth and the shallow aquifer is not a sole source aquifer. Soils beneath the site are composed of intercalated clay, silt and fine to coarse sand. The current high groundwater level is approximately 30 feet below the base of the waste; the historic high groundwater level is approximately 17 feet below the base of the waste. The fairly low permeability of the soils and the depth to groundwater will allow some attenuation in case of a leachate release. 8. Forward Inc. has a history of good operations and has not had a documented release from any of its lined units. Forward proposes to implement or continue the following operational practices: hazardous waste screening and load checking, appropriate staff training, use interim cover specifically designed to minimize infiltration, hydroseed interim cover annually before the rainy season to maximize evapotranspiration, and interim slopes will be sloped to accelerate run-off. Please provide amended copy of Performance Demonstration for a Single Composite Liner addressing the above comments. If you have any questions, please call me at(916) 255-3814. ROSS D. ATKINSON Associate Engineering Geologist cc: Mr. Robert McClellon, San Joaquin County LEA, Stockton Mr. Gino Yekta, CIMVVB, Sacramento. Mr. Butch Stafani, Forward Landfill Operations Manager, Stockton. Ms. Sangeeta Lewis, Lewis Engineering, Piedmont. Mr. Curt Fuji, Forward Inc. RDA;C:\mydocuments\FORWARD\PerformApp3