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r 'N? <br />Natalia Subbotnikova <br />From: <br />Joyesh Chandra <Jchandra@sjgov.org> <br />Sent: <br />Tuesday, December 23, 2014 9:13 AM <br />To: <br />Natalia Subbotnikova [EH] <br />Cc: <br />Robert McClellon [EH]; Michael Carroll; Taj Bahadori <br />Subject: <br />RE: FH -MW -6 Revised Design <br />Hello Natalia <br />Per our phone conversation yesterday, Solid waste is working on finalizing the revised design of the <br />groundwater monitoring well MW -6 at Foothill Landfill with RWQCB. We understand if RWQCB <br />approves the revised design, then EHD will also approve it. <br />The well drilling is scheduled for Jan 5th and EHD inspection will be needed starting Jan 7th at 9:00 <br />am. <br />Thanks <br />JOYESH CHANDRA <br />SAN JOAQUIN COUNTY I PUBLIC WORKS DEPARTMENT I SOLID WASTE DIVISION <br />PH: (209) 468-3066 1 Fax: (209) 468-3078 <br />From: Joyesh Chandra <br />Sent: Wednesday, December 03, 2014 11:48 AM <br />To: Natalia Subbotnikova (nsubbotnikova@sjcehd.com) <br />Cc: Robert McClellon; Taj Bahadori; Michael Carroll <br />Subject: FH -MW -6 Revised Design <br />Hello Natalia <br />Re: FA# 4517 <br />SR# 0070696 <br />Our division is submitting a design change for the groundwater well MW -6 at Foothill landfill <br />(Attached -Figure 2). The new design is for a double screen groundwater monitoring well. The design <br />change is made to address the continuous drop in groundwater table in the Central Valley. In the <br />past five years, Solid Waste had to replace few groundwater wells due to the decreasing groundwater <br />table. Below is a list of replaced wells: <br />1. Foothill landfill (MW -1), <br />2. Harney Lane landfill two wells (MW -3 and MW -4), <br />3. North County landfill (G-2 and G-5). <br />The new well design will allow groundwater monitoring for a longer period and will eliminate re -drilling <br />of new wells within a short period of time as the groundwater table continues to drop. <br />The packer shown in Figure 2 separates the monitoring intervals. When the first screen interval dries <br />out, the packer will be removed and monitoring will continue from the second screen interval. We <br />have spoken to Greg Drilling, and they have constructed this type of well and are familiar with the <br />