Laserfiche WebLink
San Joaquin County <br /> Environmental Health Department DIRECTOR <br /> Donna Heran,REHS <br /> 600 East Main Street <br /> PROGRAM COORDINATORS <br /> Stockton, California 95202-3029 <br /> Robert McClellon,REHS <br /> Jeff Carruesco,RENS,RDI <br /> c p Kasey Foley,REHS <br /> Q<< o'a�'� Website: www.sjgov.org/ehd Linda Turkatte,REHS <br /> Phone: (209) 468-3420 <br /> f Fax: (209)464.0138 <br /> November 10, 2011 <br /> Ashraf and Yasmin Ali Sukhwinder Singh <br /> 5000 2nd Street Suite G 8807 Bergamo Circle <br /> Benicia, California 94510 Stockton, California 95212 <br /> Subject: Fast and Easy Mart No. 38 <br /> 244 West Harding Way <br /> Stockton, California <br /> The San Joaquin County Environmental Health Department (EHD) has received and reviewed <br /> Well Destruction Work Plan (work plan), dated 20 October 2011, submitted by yourconsulting <br /> firm, Advanced GeoEnviron mental, Inc. (AGE) on your behalf for the above referenced site. <br /> # The EHD had directed the submittal of a work plan to destroy the monitoring wells at your site <br /> by letter dated 10 August 2011. <br /> In the work plan, AGE proposes to drill-out all original well construction material of monitoring <br /> well MW-'E, including well casing, screen, filter pack, and annular seal, by drilling to one foot <br /> deeper than the total depth of the original borehole measured of 45 feet below surface grade <br /> (bsg). The borehole will then be backfilled to surface grade with neat cement and covered with <br /> I the appropriate material, concrete or asphalt, to match the surrounding surface area. The EHD <br /> approves the destruction of MW-1 as described; however, �a tremie pipe must be utilized to fill + <br /> the borehole with neat cement. <br /> ' 1 <br /> 4 AGE proposes to pressure grout MW-2 and MW-3 by removing the well boxes and caps, then <br /> pumping a thick grout mixture into the well casing while applying approximately 5 to 15 pounds <br /> per square inch (psi) of pressure. Instead, the EHD directs that a'thin grout mixture be used so , <br /> the grout can more easily penetrate the screen openings3`of the casing under pressure; and <br /> although a time limit for applying the pressure was not presented, pressure must be applied for <br /> at least ten minutes at 25 psi. Following this, AGE proposes to over-drill MW-2 and MW-3 to <br /> approximately 3 feet bsg using eight-inch diameter hollow stem augers, then cut and remove <br /> the top 2.5 feet of the well casing before backfilling the remaining borehole with neat cement <br /> and completing the surface with concrete or asphalt to match the surrounding surface material. <br /> Instead of over-drilling the wells using eight-inch hollow stem augers, the EHD directs that you <br /> follow the Standards for Well Construction and Destruction in San Joaquin County (Well " <br /> Standards). Sections 13.17.12 and 13.17.13 of the Well Standards state that "If the well casing <br /> was left in place during sealing operations, a hole at least ane foot larger in diameter than the <br /> original drilled hole shall be excavated around the outside of the well casing to a depth of 3 feet <br /> below the ground surface, and the well casing shall then be cut off6 inches above the bottom of <br /> this excavation and removed. The grout used to fill the well shall be allowed to spill over into <br />