Laserfiche WebLink
Phase II Environmental Site Assessment <br /> Manteca Multimodal Station Project,Southeast of Moffat Boulevard and Main Street,Manteca, California <br /> TABLE OF CONTENTS <br /> EXECUTIVESUMMARY.......................................................................................................... 1 <br /> INTRODUCTION.........................................................................................................................3 <br /> PROJECTHISTORY..................................................................................................................4 <br /> PURPOSE AND SCOPE OF WORK..........................................................................................4 <br /> GEOLOGIC AND HYDROGEOLOGIC SETTING.................................................................. 5 <br /> Topography.............................................................................................................................. 5 <br /> Geologyand Hydrogeology............................................................................:........................ 5 <br /> Regional Groundwater Occurrence and.Quality..................................................................... 6 <br /> METHODOLOGY.......................................................................................................................7 <br /> SOIL AND GROUNDWATER SAMPLING............................................................................. 7 <br /> Standard Oil Company Supply Station and Industrial Adjacent Land Uses............................ 7 <br /> HistoricRailroad Spurs........................................................................................................... 8 <br /> StainedPavement..................................................................................................................... 8 <br /> LABORATORYANALYSIS..................................................................................................... 9 <br /> RESULTS......................................................................................................................................9 <br /> FORMER STANDARD OIL COMPANY SUPPLY STATION AND ADJACENT <br /> INDUSTRIALLAND USES ......................................................................................................9 <br /> Soil and Groundwater Sampling.............................................................................................. 9 <br /> HISTORIC RAILROAD SPURS .............................................................................................. 10 <br /> SoilSampling.......................................................................................................................... 10 <br /> STAINEDPAVEMENT ........................................................................................................... 11 <br /> SoilSampling.......................................................................................................................... 11 <br /> DISCUSSIONOF RESULTS.................................................................................................... 11 <br /> METALSIN SOIL.................................................................................................................... 11 <br /> Comparison to Background Concentrations.......................................................................... 12 <br /> Comparison to SLs and CHHSLs........................................................................................... 12 <br /> Comparison to TTLCs and STLCs......................................................................................... 13 <br /> Conclusions Regarding Metals in Soil................................................................................... 13 <br /> TPHIN SOIL............................................................................................................................. 14 <br /> Comparison to SFBRWQCB ESLs......................................................................................... 14 <br /> Conclusions Regarding TPH in Soil...................................................................................... 14 <br /> TPH-G AND VOCS IN GROUNDWATER............................................................................ 15 <br /> Comparison to MCLs and SFBRWQCB ESLs....................................................................... 15 <br /> Conclusions Regarding TPH-g and VOCs in Groundwater.................................................. 15 <br /> CONCLUSIONS AND RECOMMENDATIONS.................................................................... 15 <br /> REFERENCES............................................................................................................................ 16 <br /> LIMITATIONS........................................................................................................................... 17 <br /> Rincon Consultants <br />