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'Problem t3' Stud ort Assessment:- Feasibili Re Y. P STRONG PROPERTY 5157 West Business Loop 205, Tracy, California., , TABLE OF CONTENTS SECTION .PAGE. .._ . GROUND WATER REMEDIATION ALTERNATIVES .. . . . . . . . . . . . . . . . . . . ..13 7.1. GROUNDWATER EXTRACTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 ' 7.1.1. Ground Water Treatment Methods . . . . . . . . : . . . . . . . . : 13 7:1.2. _Feasibility Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 7.1.3. Duration . .. . . . . . . . . . . . . . . . . . . . . , . . . ... .. . . . . . . . ... 14 !: 7.1.4: Cost . . . . . . . . . . ; . . . . . : . . . . . . . . ; . 14 .7 2. IN-SITU BIOREMEDIATION/BIOENHANCEMENT ... . . . . . ...14. 7.2.1. 'Nutrient'Requirernents and Toxicity ... : : . 15 ' 7:2.2. Monitoring Activities . . . . . . . . . . . . .' . . . . . . . . .'. . . . . . . 15 7.2.3. Feasibility Studies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 7.2.4. Duration' . . .'. . . . . . . . . . . : . . . . . . . . . 16 ' 7.2.5. - Cost . . . . . . . . . . . . . . . . . . . . . . . . .,. . . . . . . . . . . . . . . . . . . .. . . ' M 1�01 7.3. MONITORED NATURAL ATTENUATION" . . . ' . . . . . . . . . . . . . . . . ... . 16 ' 8.0. RECOMMENDATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 8.1'. REMEDIATION OF HYDROCARBON-IMPACTED SOIL . . . . . . . . . . . . . . . 17 ' 8.2. REMEDIATION OF HYDROCARBON-IMPACTED GROUND WATER . . . 18 9.0: LIMITATIONS . ... . . . . . .. . . ... .'. . . . . . . . . 18 FIGURES Figure 1 -Location Map Site Plan' Figure.2 ' Figure 3 Sensitive Receptor Survey. Figure 4 - Geologic Cross Section:A-A ' Figure 5 - Geologic Cross Section:-B-B ' 'Figure 6 - Geologic Cross Section: C-C' ; Figure 7 - Dissolved_TPH-g ' Figure 8 - Dissolved,Benzene. Figure 9 -Adsorbed'Soil` Advaiued GeoEnvironmental,Inc:'