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any extraction system would require <br /> ound water control: therefore, <br /> containment may be incorporated as part of other alternatives. <br /> Ground water extraction and treatment isr. This alternative <br /> enerally an effective <br /> d for the treatment of hydrocarbons <br /> i d zone and reversing the <br /> The <br /> method wells into the ound water• <br /> consists of installing extracting the affected gr <br /> hydraulic gradient by Typical <br /> ground water is then either 1 e to d he tyosew, lines.sed c Pbon <br /> gr ed direct y and activated concern or discharged <br /> treatment methods include air stripping <br /> filtration. proven effective method <br /> hydrocarbons in ground water and reducing <br /> further <br /> Ground water extraction and treatment's a <br /> for remediating by . round water. Implementating e uhf this <br /> migration of chemicals in installed since <br /> alternative would be simplebecause, <br /> wells could beaeasi yl However, the <br /> is normally used. The approximately 6 fee <br /> the depth to ground water is only D Water Channel and ground <br /> site is located near the Stockton deep draulically connected to the <br /> be required to achieve <br /> water under the site ishl{extraction rates may As indicated <br /> Channel, <br /> Therefore adient for ground water collection• out curtain <br /> an appropriate gr wall or gr <br /> previously, a physical barrier such as a slurry <br /> could be installed to reduce the required extraction rate.control has been <br /> 4 s for <br /> Once the appropriate number of wells for hydr, <br /> ground water would be feasible.u rements <br /> selected, treatment of the nt process and permitting req <br /> maintaining the treatment p rate and <br /> Ground water <br /> cannot he estimated at this timeC � QSeaestimates,as flowen t d and <br /> time required for treatment a implem <br /> potentially appropriate remedial alternative <br /> extraction and treatment is effective and easily <br /> therefore is considered a p <br /> for the site. <br /> drocarbons in ground water would involveoeirh�e <br /> Biotreatment of by into the affected <br /> the appropriate <br /> in situ or ex situ methods. For in situ <br /> iTe tly <br /> nutrients and microbes would be injected <br /> would be extracted <br /> ground water. <br /> a or attar treatment, the water <br /> and treat remediate <br /> _._._....... _..._..._ -- <br /> Both in situ-�iid-ex-situ--biotreatment could effectively hydrocarbons <br /> further ire a on of by d be <br /> ound water at the site. However, ex situ treatrnent is preferred as <br /> it would also p <br /> rovide control over ground water coin <br /> in ground water. In addition, extraction oft a <br /> 6-7 <br />