Laserfiche WebLink
^.'64.10.2.4 Springs <br />There are no springs on the property). There does a peaF to be a sea6G <br />4-11-44.10.3 Regional Groundwater Quality <br />The landfill site is located within the San Joaquin Hydrologic Region, Eastern San <br />Joaquin Subbasin, which- The subba ,ir+ encompasses 707,000 acres (The California <br />Department of Water Resources, 2003). According to California's Bulletin 118 for the <br />San Joaquin River Hydrologic Region, 2003, groundwater measurements over the past <br />40 years have shown a continuous decline in groundwater levels in the Eastern San <br />Joaquin County. As a result of declining water levels, poor quality water has been <br />moving eastward along a 16 -mile front on the east side of the San Joaquin River Delta. <br />The degradation was particularly evident in Stockton where a saline front is moving <br />eastward. Large areas of elevated nitrate in groundwater exist within the subbasin <br />located southeast of Lodi and south of Stockton. For the entire basin, 689 public supply <br />water wells were sampled from 1994 through 2000. Samples analyzed indicated that <br />523 wells (76%) met the state primary MCLs for drinking water. The others (24%) had <br />constituents that exceeded one or more MCLs. These included: inorganics (aluminum, <br />arsenic, manganese, iron, and total dissolved solids), radiological particles, nitrates, <br />pesticides, and VOCs. Calcium -magnesium bicarbonate or calcium -sodium bicarbonate <br />types characterize the majority of the basin. Bicarbonate is the predominant anion in the <br />eastern part of the basin. <br />Groundwater quality throughout the region is suitable for most urban and agricultural <br />uses (The California Department of Water Resources, 1994). <br />4-4-- - <br />4.1 1.6rSke Groundwater Quality <br />Foothill Sanitary Landfill Page 39 Public Works/Solid Waste <br />Joint Technical Document County of San Joaquin — Revised 7/30110 <br />