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WASTE DISCHARGE REQUIREMENTS ORDER NO.RS-2003-0049 -2- . <br /> FORWARD INC. AND ALLIED WASTE INDUSTRIES <br /> FOR OPERATION OF <br /> FORWARD CLASS 11 LANDFILL <br /> SAN JOAQUIN COUNTY <br /> SITE DESCRIPTION <br /> 5. The measured hydraulic conductivity of the uppermost aquifer underlying the Unit ranges <br /> between 2 X 10*2 and 2 X 10"3 cm/sec. <br /> 6. The closest fault, the Tracy-Stockton Fault Zone is approximately 6.5 miles to the northwest. <br /> Maximum Credible Earthquake Moment magnitudes for faults within, 1.00 miles of the <br /> facility.range between 6.7 and 7.9 on the Richter scale. The maximwn credible horizontal <br /> ground acceleration for the site is 0.13 g. <br /> 7. Land uses within 1,000 feet of the facility are agriculture and residential. The Stockton <br /> Metropolitan Airport is approximately one mile from the site,Youth and Women's criminal <br /> detention facilities are approximately 1,900 feet north of the site, and the 13NSF Intermodal <br /> Facility is approximately one mile northeast or the site. <br /> 8. The facility receives an average of 14.27 inches of precipitation per year as measured at the <br /> Stockton Weather Station approximately eight miles northwest of the si.te. The mean pan <br /> evaporation is 78.43 inches per year as measured at the Oakdale Woodward Dam Station, <br /> located approximately 13 miles southeast of the site. <br /> 9. The 100-year, 24-hour precipitation event is estimated to be 3.25 inches,based on <br /> Department of Water Resources' bulletin entitled Rainfall Depth-Durarion-.Frequency for <br /> Cal fornia, 1981. <br /> 10. Part of the waste management facility is within a 100-and 500-year flood plain based on the <br /> Federal Emergency Management Agency's(FEMA)Flood Insurance Rate Map. Ongoing <br /> realignment of the North Branch of Little Johns Creek should eliminate the floodplain areas <br /> from the landfill footprint. <br /> 11. There are 35 domestic, uidustrial, or agricultural groundwater supply wells within one mile of <br /> the site. <br /> WASTE AND SITE CLASSMCATION <br /> 12. The Discharger discharges designated, nonhazardous, and inert solid wastes to Class 11 <br /> landfill units. Designated and nonhazardous solid wastes include, but are not limited to <br /> asbestos, commercial and industrial waste, municipal solid waste, coal and wood ash, <br /> contaminated soils, salty wastes, construction and demolition waste, shredder waste axtd <br /> dewatered sewage sludge. Contaminated soils may include, but are not limited to, treated, <br /> and untreated petroleum products, metals or other constituents. Designated wastes are <br /> defined in §20164 of Title 27. Nonhazardous solid wastes .includes m1micipal solid wastes, <br /> as referred to in th:e Code of Federal Regulations, Title 40, Part 258.2. <br /> b d NN90££S9 '0N/99:N '1S/L91[ 9002 N lWNOW) wod� <br />