ARCHIVED REPORTS_XR0007116 - Laserfiche WebLink

Home Browse Search

Corrective Action Plan 15 Tune Oil Com an ,Pro a No 04 049 14000) ast F{t Inti a 88,LocF eford CA September 8 1998 Based upon the chemical and subsurface conditions, SECOR eliminated the following remedial technologies © Alternative 1 - Groundwater Extraction and Soil Vapor Extraction was eliminated based on the cost, the length of time a system of this type would require to remediate a site, and the ineffectiveness of groundwater extraction in removing hydrocarbons adsorbed to soil within the saturated zone 0 Alternative 3 - Natural attenuation with no active remediation was eliminated due to the length of time and associated costs 4.3 REMEDIAL AL'T'ERNA'T'IVE RECOMMENDATION Air sparging with soil vapor extraction (AS/SVE) was selected as the most cost effective remedial alternative to mitigate subsurface impacts to below risk-based levels Soil vapor extraction will remediate unsaturated soils by extracting soil vapor, and introducing oxygen for biodegradation Air sparging will remediate groundwater and saturated soils by stripping organics, and introducing oxygen for biodegradation Results of the SVE feasibility tests indicate that SVE would be an effective means of remediating unsaturated soils impacted with petroleum hydrocarbons In lithologies where SVE is effective, air sparging is typically effective as well 4.4 CONCEPTUAL REMEDIAL, ALTERNATIVE DESIGN The goal of the remediation project is removal and/or in-situ destruction of hydrocarbons in soil and groundwater A total of ten (10) wells W-I through W-8, MWA and MW-3 are recommended for use as SVE wells (Figure 7) Not all of these wells are necessary to achieve the required radius of influence, however, the proximity of these wells to the proposed piping runs makes the expense of hooking additional wells up negligible Use of well MW-1 is Time O&Lockeford\CAP wpd