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Page 1 of 2 <br /> Mike Infurna [EH] <br /> From: Mike Infurna [EH] <br /> Sent: Tuesday, May 03, 2011 8:15 AM <br /> To: 'Straten, Melissa' <br /> Subject: RE: Well abandonment <br /> Melissa, <br /> yes, pressure grouting is available but there are conditions. Refer to our Ordinance and pay <br /> particular attention to Section 13.17, with particular attention to sections 13.17.2, 13.17.12 and <br /> really all of section 13.17 except for 13.17.6 (commonly referred to as 'overbore'). If you <br /> pressure grout, you won't need over-bore details. <br /> Most consultants and drillers 'think' pressure grout is easier, cheaper, and better for well <br /> destructions, but after reading section 13. 17.12 actual work required to make this <br /> MUSHROOM CAP, the 20-inch hole to 3 feet deep (for original 8 inch plus 12" installs and <br /> 22inch holes for 10" installs) has proven to be a problem with labor and time. Big thing to <br /> pressure grout are, 1- well is to be clear, 2- ND for chemicals, and 3- known construction. Can't <br /> comply with ALL three, can't pressure grout. if you want to pressure grout wells meeting <br /> these standards, be prepared to apply liquid grout pressure (not air) at NLT 25 psi for at <br /> least ten minutes. then make the mushroom cap. if grading, surface cuts, ag work is planned <br /> in the area of a pressure grouted well, then deeper requirements (typically to 5' bgs) are <br /> required. <br /> wells NOT meeting pressure grout requirements may be drilled out or wire-lined. Wells to be <br /> wire-lined must meet#1 and #3 above. <br /> You should know that wells to be overbored/remove the contents do NOT require a mushroom <br /> cap. just drill out the well to TD +1 foot with at least the same size auger as installed, <br /> preferrably a larger auger but I can't enforce that. <br /> Destruction permits are $366 per application PLUS $122 per well. I need a work plan <br /> approved by your lead agency. Methods and materials are to be described in the plan. A <br /> completed Master File Record (MFR) must accompany the applications. <br /> All wells on UPRR right of way can be under one permit. Step onto City right of way or private <br /> property, then each parcel, each City encroachment permit needs its own permit and its own <br /> fee. <br /> I've attached our webpage that has the forms you'll need, plus an 'information' sheet describing <br /> what I said here. Click and print each. <br /> http://www.sjgov.org/ehd/Programs/Environmental/Borings.htm <br /> mike. <br /> 209.468.3454 <br /> 66 <br /> 5/6/2011 7K n0'/O <br />