Laserfiche WebLink
0 <br /> contamination in groundwater through the use of three groundwater extraction and <br /> treatment systems. <br /> Mr. Cudzilo explained that the report was prepared and reviewed by DDJC, the Defense <br /> Logistics Agency(DLA), US EPA, Cal-EPA, and supporting contractors. The <br /> organizations and agencies reviewed cleanup results, conducted site visits,took <br /> photographs,conducted interviews, and studied the results of the groundwater monitoring <br /> that is conducted throughout the year. <br /> The report concluded that active contamination removal in nine areas of the depot has <br /> been sufficient to protect depot workers and the public from health risks. The continuing <br /> land use control that does not allow building of residences is also protective of workers <br /> and the public. Therefore, the remedial actions for soils have accomplished the goal of <br /> protecting public health from contaminants in soils. This effort is continuing. <br /> Mr. Cudzilo also discussed the three groundwater extraction and treatment systems <br /> operating on the Sharpe depot. These three treatment systems include a total of 37 wells. <br /> Groundwater contaminants are removed before the treated water is released to the South <br /> San Joaquin Irrigation District Canal. <br /> The report concluded that the remedial actions for groundwater have lowered the <br /> concentrations of VOCs,bringing them closer to aquifer cleanup levels over large areas. <br /> Furthermore,the remedial actions have been protective because no private wells produce <br /> water with higher health risk than they did before. However, the report concluded that <br /> some portions of contaminated groundwater called"plumes"were not completely <br /> captured by the extraction wells and were moving toward private wells west of the <br /> Sharpe depot.The report also presented evidence that cleanup of groundwater could <br /> require another 30 years of pumping and treating. <br /> Mr. Cudzilo stated that the Five-Year Review Report recommended several actions to <br /> keep groundwater from reaching private wells and to shorten the time needed to achieve <br /> cleanup. The recommended actions are: <br /> • To keep the plume from moving farther: <br /> o Increase pumping rates in wells (CCI and CC3) on the west boundary and <br /> off-depot; and <br /> o Add more wells,if necessary. <br /> • Reduce concentrations of the plume on the west beneath off-depot properties and <br /> shorten the time needed to achieve cleanup. <br /> • Continually optimize the extraction well systems to assure human health and the <br /> environment are protected and to avoid waste of funds. <br /> Because DDJC-Sharpe may still have contamination within its boundaries in five years, <br /> another Five-Year Review will be conducted. The goals for the next five years are to <br /> continue protecting depot workers and the public from exposure to depot contaminants in <br />