Laserfiche WebLink
Page i of L <br /> Mike Infuma [EH] <br /> From: Mike Infurna[EH] <br /> Sent: Thursday, May 03,2007 9:41 AM <br /> To: 'gkowtha@stratusinc.net' <br /> Subject: RE: USA#835 <br /> Attachments: 2705 Co Club SRs 0050443 &444 Scanned_.pdf <br /> Attached please find TWO SJCEHD permits for work at 2705 Country Club. One is for 6 onsite MWs and the <br /> other for ONE offsite, City ROW (MW-17). <br /> Please confirm start date and time. <br /> From: Gowri Kowtha [mailto:gkowtha@stratusinc.net] <br /> Sent: Thursday, May 03, 2007 10:09 AM <br /> To: Mike Infurna [EH] <br /> Cc: Allan Dudding <br /> Subject: RE: USA #835 <br /> Importance: High <br /> Mike: <br /> Sorry for the confusion. <br /> Wells MW-11, MW-15, MW-16, MW-17 and MW-20 will be installed using a Hollow stem augur rig to <br /> depths ranging between 20 and 25 depending on geology to monitor first encountered groundwater. <br /> Wells MW-11 and MW-20 are 4-inch diameter wells. Wells MW-11 and MW-20 will be drilled with 8-inch <br /> augurs for sampling purposes, and the borehole will be drilled out using 10-inch augurs prior to well <br /> installation. We had this option open, as we had planned on using a limited access rig for all shallow <br /> wells. If a limited access rig is not being used (now that we have two mobs), then the 4-inch dia wells will <br /> be installed using 10-inch augurs. <br /> Wells MW-12, MW-13, MW-14, MW-18, MW-19, MW-21 will be installed using a sonic rig (to avoid <br /> conductor casings)will all be 2-inch diameter wells. These wells are planned to be installed to depths <br /> ranging between 45 and 48 feet bgs. The bore holes for these wells will be cleared (vacuumed/pumped) <br /> of any groundwater,within the upper 30 feet bgs per Table (page 6) provided in Stratus work plan dated <br /> April 7, 2006. All the wells installed using sonic rig will use 9-inch diameter threaded steel casings. <br /> Centralizes will be used in all wells during installation. <br /> Hope that helps. <br /> -----Original Message----- <br /> From: Mike Infurna [EH] [mailto:MInfurna@sjcehd.com] <br /> Sent: Wednesday, May 02, 2007 3:58 PM <br /> To: gkowtha@stratusinc.net <br /> Subject: USA #835 <br /> Gowri, <br /> Clear up some techno stuff for me about sonic vs hollow stem for this site's pending drill. <br /> 5/3/2007 <br />