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ANNUAL REPORT <br /> 1998 GROUNDWATER MONITORING <br /> FORMER AMERICAN FOREST PRODUCTS COMPANY FACILITY <br /> STOCKTON, CALIFORNIA <br /> 1.0 INTRODUCTION <br /> This report, prepared on behalf of American Forest Products Company (AFPC), presents <br /> the results for the 1998 groundwater monitoring performed at the former AFPC facility in <br /> Stockton, California (Site) (Figure 1) Annual and semi-annual monitoring is being performed at <br /> the Site in accordance with an April 11, 1996 letter to AFPC submitted by the San Joaquin County <br /> Public Health Services Environmental Health Division (PHS/EHD) <br /> The April 11, 1996 letter outlined two tasks that AFPC must satisfy These tasks include <br /> semi-annual groundwater level measurements and annual groundwater sampling from five existing <br /> on-site monitoring wells The results of this report demonstrate that the groundwater-monitoring <br /> program, agreed to by PHS/EHD and AFPC, has been implemented <br /> The report has been partitioned into three sections and three appendices Section 1 0 <br /> presents this introduction Section 2 0 discusses groundwater sampling methods and analytical <br /> results, and Section 3.0 offers a summary of the data Appendix A describes the groundwater <br /> sampling methodology utilized during the sampling round Appendix B presents Field Record of <br /> Water Sample and Chain-of-Custody forms Appendix C presents the Analytical Laboratory <br /> Summary Report, and a memorandum summarizing data validation <br /> 2.0 GROUNDWATER DEPTH SAMPLING AND ANALYSIS <br /> The groundwater-monitoring program (program) includes the measurement of groundwater <br /> levels and the collection and analysis of groundwater samples from five Site monitoring wells, <br /> DMW-1 through DMW-5 Per the program, the depth to groundwater was measured in January <br /> and July of 1998, and groundwater samples were collected in July 1998 <br /> r <br /> The sections below discuss the sampling and analytical procedures used during t h e 1998 <br /> groundwater monitoring The depth to groundwater procedures are discussed in Section 2 1 The <br /> groundwater sampling and analysis procedures are discussed In Section 2 2 Groundwater table <br /> 1 <br /> 11DM_SACI\SYS\WORDPROC1sacID44misc19809_06 doc <br /> DAMES&MOORE <br />