ARCHIVED REPORTS_XR0008724 - Laserfiche WebLink

Home Browse Search

xq ori . Ground Water Monitoring Report - First Quarter 2004 WATERLOO FOOD & FUEL 3032 E Waterloo Road, Stockton, California 1.0. INTRODUCTION AND SCOPE OF WORK At the request of Mr Paul S1dhu,Advanced GeoEnvironmental,Inc (AGE)has prepared this ground water monitoring report for the site located at 3032 East Waterloo Road, Stockton, California(site) The scope of work included conducting a quarterly ground water monitoring event during the first quarter of 2004 and preparation of this report The location of the site is illustrated in Figure 1, locations of structures, soil bonngs and monitoring wells on the site are depicted in Figure 2 At the present time, there is a total of eight monitoring well locations at the site, four locations contain single-level wells (MW-I through MW-4),and four(MW-5 through MW-8)contain multi- level wells consisting of five perforated and screened well chambers (A through E) in a seven- chamber casing(Continuous Multichannel Tubing-CMT) Based on field and laboratory analytical data, screened intervals of the wells were set within discrete depth intervals (hydrologic units) to monitor vertical and lateral changes in hydraulic gradient,contaminant concentrations and migration directions within the hydrologic units Each hydrologic unit was defined based on lithologic information provided by cone penetrometer testing, as detailed in the AGE-prepared Cone Penetrometer Testing and Monitoring Well Installation Report, dated i 1 February 2002 As-built monitoring well construction details are summarized in Appendix A Six hydrologic units (HUs) were defined as the following • HU1 (water table to 62 feet below surface grade[bsg]),within the screened interval of wells MW-1 through MW-4 and A-wells MW-5A through MW-8A, • HU2 (62 to 70 feet bsg),within the screened interval of wells MW-I through MW-4 and A- wells MW-5A through MW-8A, • HU3 (70 to 90 feet bsg),within the screened interval of B-wells MW-5B through MW-8B, • HU4(90 to 100 feet bsg),within the screened interval of B-wells MW-5B through MW-8B, • HU5 (100 to 155 feet bsg),within the screened interval of C-and D-wells MW-5C and MW- 5D through MW-8C and MW-8D and ■ HU6(175 to 185 feet bsg),wrthin the screened interval of E-wells MW-5E through MW-8E HU6 was designated as the deepest hydrologic unit monitored Additional site history and findings from previous investigations and monitoring events at the site are detailed in AGE's report titled Preliminary Investigation and Evaluation Report, dated 14 December 2000 and Cone Penetrometer Testing and Monitoring Well Installation Report dated 11 February 2002