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f I <br /> � I <br /> URS <br /> June 11,2004 <br /> San Joaquin Public Health Service <br /> Environmental Health Division <br /> 304 E. Weber Avenue, third Floor <br /> Stockton, California 95202 <br /> Attention: Mr. Jeffrey Wong <br /> Re: Fourth Quarter 2003 Groundwater Monitoring Report <br /> Former American Forest Products Facility <br /> Stockton,California <br /> URS Project No. 17322736 s <br /> Dear Mr. Wong: <br /> On behalf of Mr. William Bergvall, consultant for American Forest Products Company LP, URS , <br /> loa Corporation Americas (URS) is submitting this letter report that includes results of fourth quarter <br /> groundwater monitoring conducted in December 2003 at the Former American Forest Products Facility, <br /> Stockton, California (Figures J and 2).l Groundwater monitoring was conducted, and this report <br /> produced, following the requirements presented in a letter from Mr. Jeffrey Wong of the San Joaquin <br /> County Public Health Service(PHSIEHD)dated April 16, 2003. <br /> Water levels were measured androundwater samples were collected from site monitoring wells DMW- <br /> g P g <br /> w 1 through DMW-7 on December 13, 2003! Well construction details for all of the wells are included in <br /> Table 1. Field records and chain-of-custody forms are included in Appendix A. A Data Validation <br /> Summary and analytical laboratory reports!{are included in Appendix B. ! <br /> FIELD METHODS <br /> Static water levels (Table 2) were measured prior to initiating sampling activities using an electric water <br /> level sounder. <br /> Prior to sampling, the wells were purged to ensure representativeness of the water samples. A 2-inch- <br /> diameter Grundfos submersible pump was used for purging all of the wells with the exception of DMW- <br /> 5, which was purged using a bailer. Wells DMW-1 through DMW-5 were purged at a rate of <br /> approximately 4 gallons per minute (gpm), and DMW-7 was purged at a rate of approximately 1.5 gpm. <br /> i Field parameters (temperature, electrical conductivity, pH and turbidity) were monitored during purging, <br /> Lir and purging was continued until the field parameters stabilized and a minimum of three casing volumes <br /> of groundwater had been removed. Purging�data were entered on Field Record of Water Sampling Forms k <br /> t <br /> URS Corporation ; <br /> Crown Corporate Center <br /> 2870 Gateway Oaks Drive, Suite 300 ffi <br /> Sacramento,CA 95833 p <br /> Te(: 916.679.2000 <br /> Fax: 916.679.2900 } <br /> �f KAWprocess12273614Q03AFP revOl.doe <br /> 'i <br />