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Page 2 of 3 <br /> yup. <br /> two choices... <br /> 1- if you grout with cement and o/ex, then o/ex must be to bottom of cement <br /> grout. (chase/remove the grout). <br /> 2- if planning on o/ex <TD of the borehole, use a NON hardening grout, i.e. <br /> bentonite chips, pe.11ets,eslurry. <br /> same as before.. I discourage the 'mixing' of cement lower and bent upper. <br /> Ordinance calls for continous... <br /> From: Doran, Neil [mailto:Neil.Doran@stantec.com] <br /> Sent: Thursday, August 13, 2009 12:42 PM <br /> To: Mike Infurna ,[EH] <br /> Cc: Rorie, Bryan <br /> Subject: RE: revised letter for French Camp <br /> Importance: High <br /> Mike, my field geologist brought up an important point...during previous work at the site, <br /> we had backfilled boreholes with bentonite slurry because they may be subsequently <br /> excavated. That is still the case with the boreholes for tomorrow, in that we may end up <br /> excavating to 10 feet at these locations. <br /> Let me know what you think; if you want us to use bentonite, I can update the letter I sent <br /> you to reflect that. <br /> Also,please give us your cell phone number. <br /> Neil <br /> Stantec <br /> stantec.com <br /> The content of this email is the confidential property of Stantec and should not be copied,modified, <br /> retransmitted,or used for any purpose except with Stantec's written authorization. If you are not the intended <br /> recipient,please delete all copies and notify us immediately. <br /> Please consider the environment before printing this email. <br /> From: Mike Infurna [EH] [mailto:MInfurna@sjcehd.com] <br /> Sent: Thursday, August 13, 2009 11:25 AM <br /> To: Doran, Neil <br /> Subject: RE: revised letter for French Camp <br /> much better. <br /> thank you. yb `5 <br /> you're ok to drill on Friday, Aug 14, 2009 under existing EHD permit for <br /> 8/13/2009 <br />