Laserfiche WebLink
000� 1117 Lone Palm Avenue,Suite 201 <br /> ("kTC <br /> Modesto,California -2221 <br /> 209-579-2221 <br /> Fac:209-579-2225 <br /> ASSOCIATES INC. <br /> borehole within the existing conductor casing, assuming the grout seal associated with the conductor <br /> casing is not compromised. The replacement well will be installed to approximately 69 feet below <br /> grade and will be constructed of 2-inch inside diameter schedule 40 PVC well screen and casing with <br /> approximately five feet of 0.010 inch slot screened PVC. A sand pack will be placed in the annulus of <br /> the well extending from the bottom of the well screen to approximately two to three feet above the top <br /> of the screen. Approximately three feet of bentonite will be placed on top of the sand pack and <br /> hydrated with potable water. The remaining annulus will be grouted to surface with cement grout. To <br /> protect the integrity of the well, a locking, watertight well plug will be installed on the well and a <br /> watertight wellhead labeled "monitoring well' will be set in concrete over the well. <br /> The drilling will be conducted under the current drilling permit application issued by the San Joaquin <br /> County Environmental Health Department (SJCEHD) by a State-licensed (C57) drilling company. All <br /> drill cuttings will be stored on site in 55-gallon drums pending laboratory results. <br /> i <br /> Once the monitoring well is installed, the top of the well casing will be surveyed to sub-meter accuracy i <br /> relative to a known benchmark by a State of California licensed land surveyor. At least 48 hours after <br /> installation, the well will be developed using surging and bailing techniques until the purged <br /> groundwater is relatively sediment free. The well will be sampled at least 48 hours after development. <br /> Purged groundwater will be stored in 55-gallon drums approved for hazardous liquid storage pending <br /> laboratory results. <br /> i <br /> If you have any questions or require additional information regarding this workplan,please contact us <br /> at(209)579-2221. <br /> Respectfully submitted, <br /> ATC Associates Inc. ONAL a <br /> cJ / Nth q TODD C.WNER Nj <br /> i <br /> No.BM <br /> Todd Hafner, P.G. <br /> CA Professional Geologist No. 8090 9rFOfi CA���OQ� <br /> I <br /> (J <br /> Jeanne Homsey, P.E. <br /> CA Registered Civil Engineer No.47410 <br /> cc: Ms. Eugenia Valdez,J&L Market <br /> Mr. Mike Infurna, SJCEHD <br /> S:tEnvironmentalt285891replacement well wkp.doc 2 ATC Associates Inc. <br />