Laserfiche WebLink
Quarterly Report - Third Quarter 2001 <br /> YAMADA BROTHERS <br /> 15406 South Tracy Boulevard, Stockton, California <br /> 1.0. INTRODUCTION <br /> IIn accordance with the request of Mr Bob Yamada of Yamada Brothers Inc Advanced <br /> I GeoEnvironmental, Inc (AGE)has prepared this quarterly report for the property located at 15406 <br /> South Tracy Boulevard, Stockton, California The scope of work included quarterly ground water <br /> monitoring and preparation of this report The location of the site and the immediately surrounding <br /> I area are illustrated on Figure 1, structures and monitoring well locations on the site are illustrated <br /> on Figure 2 Background information Is summarized in Preliminary Site Assessment Report - <br /> February 1999, prepared by AGE <br /> I <br /> 2.0. PROCEDURES <br /> Quarterly ground water monitoring was performed on 05 September 2001 Field work was <br /> performed in accordance with the Central Valley Regional Water Quality Control Board <br /> (CVRWQCB) and San Joaquin County Public Health Services - Environmental Health Division <br /> (PHS-EHD) guidelines for the investigation of underground storage tank(UST) sites and sampling <br /> ground water monitoring wells <br /> 2 1 MONITORING WELL PURGE PROCEDURES <br /> On 05 September 2001 a Solinst water level meter was used to measure the depth to ground water <br /> P <br /> P <br /> in the three wells relative to the tops of the well casings (well heads) The ground water elevations <br /> and gradient were determined from this data(Table 1) <br /> I After recording water level measurements, a dedicated disposable plastic bailer was used to purge <br /> each monitoring well of standing water Approximately 8 to 11 gallons of water were removed from <br /> each well(approximately 3 casing-water volumes) Ground water temperature,pH and conductivity <br /> were measured at regular intervals during the purge process using an Oakton water analyzer Field <br /> data sheets are included in Appendix A Purged water was stored on site in labeled, 55-gallon DOT- <br /> approved drums <br /> IDomestic well DW-1 was purged by opening the purge valve and allowing the holding tank to be <br /> emptied Following complete discharge of the holding tank the pump was allowed to operate for at <br /> least one minute and a sample was collected from the sampling port located on the supply line <br /> between the well head and the holding tank <br /> I <br /> I <br /> Advanced GeoEnvironmental,Inc <br />