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[ASIRRA+9 <br /> ry <br /> i <br /> i <br /> r-- <br /> wil <br /> f <br /> PRE-LANK REPUICENEKT Site Assessment uo,k Plan <br /> 6131 Pacific Ave, Stockton, CA <br /> Aegfs Project Na, 90.020 <br /> Page i <br /> TABLE OF CONTENTS <br /> - 1.0 INTR6 UCTION . . . . . . . . . . . . . ' . .' . . <br /> `1 <br /> 1.1 Purpose . . . . . . . . . . . . . . 1 <br /> 1.2 Scope . . . . . . . . . . . . . . . . . . . . <br /> 2.0 BACKGROUND INFORMATION . . . , . . . 3 <br /> - 2.1 Site Location . . . . . . . 3 <br /> 2,2 Site Descri?7G1on . . . . . . . . . . . 3 <br /> 2.3 Adjacent Land Uses . . . . . . . . . ' . . 3 <br /> 2.4 Tank Storage Products 6 <br /> 2.6 Utilities . <br /> 2.6.1 On-Site Underground Utilities . . 6 <br /> . � � S <br /> 2.6,2 Off--Site Utilities . . . . 8 <br /> 2.7 Site Subsurface Conditions - ' <br /> 2.8 Site Hydrology . . . . . . . S <br /> 8 <br /> y 2.9 Regional Geology . . . . . . . . . . . . . . . . . 8 <br /> 2.9.1 Mehrten Formation . . . . . . . . . . . g <br /> 2.9.2 Laguna Formation . . 9 <br /> 2.9.3 Victor Formation/Recent Alluvium . 9 <br /> { 2.9.4 Structure . . . . . . . . . . 10 <br /> 2.10 Regional Hydrogeology . . . . . , . 10 <br /> . . . . <br /> 2.11 Water Well Information . Z0 <br /> . . . . . . . . <br /> 3.O PROPOSED WORK PLAN t.r . . . . . . . . . 11 <br /> 4.0 I+IETHODS • 13 <br /> E ? 4.1 Soil Sampling . . . . . 13 <br /> ._ 4.2 Sail Classification . 13 <br /> 4.3 Soil Sample Screening: Portable Photoionization�Detector <br /> Method13 <br /> 4.4 Analytical Procedures 14 <br /> 4.5 Quality Assurance Plan . . . . - ' <br /> 14 <br /> 4.5.1 General Sample Collection and Handling <br /> 51 Procedures . . . . . . . . 14 <br /> 4.5.2 Sample Identification and Chain-of-Custody <br /> Procedures . � <br /> . . . _ 14 <br /> 4.5.3 AnalyticalQualityAssurance 15 <br /> 4.5.4 Miscellaneous Checks of Accuracy 15 <br /> 5.0 SCHEDULE . . <br /> . . . . . . 15 <br /> `'. 6.0 REMARKS/SIGNA'T'URES . . . . . . . . <br /> . . . 17 <br /> t 7.0 REFERENCES <br /> I ; . . . . . . . . 1g <br />