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GEOMATCIIX <br /> TABLE 5 <br /> CORRECTIVE ACTION ALTERNATIVES TO RESTORE GROUNDWATER TO WQOs <br /> 1805 Harbor Street <br /> Stockton, California <br /> Remedial Site-Specific Implementability Time to <br /> Alternative Technical Method Effectiveness at the Site Achieve WQOs Cost <br /> Shallow Tank Physically remove affected soil located in the area of the Poor Implementable 6 months to imple- $246,700 <br /> Area Excava- former UST to a depth of approximately 13 feet below An estimated 15/a o ment, relatively long <br /> mass and the <br /> tion with ground surface A vacuum truck would be used to it the of to achieve WQOs <br /> enhanced bio- remove any free product present on groundwater Cal- <br /> remediation and cium peroxide would be added to the excavation prior to free productt majority <br /> immediately be removed, <br /> product removal backfilling to stimulate bioremediation Dispose of <br /> however, WQOs would not <br /> approximately 117 cubic yards at a Class II landfill <br /> be achieved for decades to <br /> centuries due to presence of <br /> remaining petroleum <br /> affected soil Clean <br /> imported soil used for <br /> backfill would likely <br /> become affected by <br /> petroleum <br /> Tank Area Physically remove affected soil located in the area of the Poor Implementable 6 months to impic- $613,240 <br /> Excavation former UST to a depth of approximately 30 feet below An estimated 40% the ment,relatively long <br /> ground surface Dispose of approximately 780 cubic mass would immediately be to achieve WQOs <br /> yards of affected soil at a Class 11 landfill removed,however,WQOs <br /> would not be achieved for <br /> decades to centuries due to <br /> presence of remaining <br /> petroleum affected soil <br /> Clean imported soil used for <br /> backfill would likely <br /> become affected by <br /> petroleum <br /> 11Doc_Saf69"s199631CAPNn1 5 Alts Thl Doc Page 2 of 3 <br />