CORRESPONDENCE_2000-2002 - Laserfiche WebLink

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. . , 0 In order to evaluate the approximate quantities of ADC necessary at the facility measurements of the working face were obtained during the inspection. The measurements obtained were approximately 300 feet by 270 feet which is 81,000 square feet. [This did not include the Class II disposal area.] This would require approximately 1,500 cubic yards or 1,800 tons of soil for coverage. On an annual basis(305 days/year)the total would be approximately 549,000 tons per year. Some of the requested tonnage information for this facility has not yet been received,however from the available information and information previously submitted for the DRS a temporary analysis can be determined. The DRS information indicates that for the period of July 1,2001 to December 31,2001 that the facility accepted 24,160 tons of material which was used as greenwaste ADC and that 17,695 tons of C&D material was used as ADC. Also records obtained during the site visit reveals that the total of 145,514 tons of material was accepted as cover during the same six month period. Therefore,it is assumed that 103,659 tons of soil was used for cover during the six month period. In order to provide for the difference in average depths allowed and the weight conversions from soil to ADC types the table at the end of this memo was used. The calculations indicate that a total equivalent of 168,721 tons of soil coverage would have been provided by the soil and ADC accepted during this time(6 months)or approximately 337,442 tons for a full year which is approximately 61%of the cover needs. Currently it is not possible to determine whether the facility needs to accept additional cover material to make up for a soil shortfall. The operator should provide an amendment to the RDSI and describe ADC and beneficial use waste types,quantities,processing methods,and operations methods. Calculations and supporting information should be included based on waste types, applicable cover to waste volume ratios, applicable density conversion factors,engineering specifications,or other pertinent information to determine the maximum quantity limits of these materials to be used establish and establish an accurate soil balance for the facility. Cover Soil or Soil Equivalent Approximate number Average allowed of square yards Cover Material Pounds per cubic yard thickness in inches coverage for one ton Soil (includes 2400 6 5 contaminated soil) Sludge 1300 6 9 Green waste 500 12 12 Treated auto shredder 800 24 4 waste Processed C&D or 1800 18 2 tailings Tire shreads 1200 6 10 Ash 1400 18 3 Street sweepings 1200 6 10 Compost 500 12 12 C&D wood waste 400 18 10 3