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I will review it.Thanks. <br /> From: Rogers,Tamera [mailto:Tamera.Rogers@arcadis.com] <br /> Sent:Thursday, November 03, 2016 9:08 AM <br /> To: Nuel Henderson [EH] <nhenderson@sicehd.com> <br /> Subject: RE:4707 Pacific Avenue, Stockton -Work Plan Addendum <br /> The Work Plan Addendum we submitted addresses the technical justifications for pressure grouting the wells. <br /> Thanks, <br /> Tamera <br /> T: +1.408.797.2013 <br /> M: +1.408.239.9616 <br /> From: Nuel Henderson [EH] [mailto:nhenderson@sjcehd.com] <br /> Sent:Thursday, November 3, 2016 9:06 AM <br /> To: Rogers,Tamera <Tamera.Rogers@arcadis.com> <br /> Subject: RE:4707 Pacific Avenue, Stockton -Work Plan Addendum <br /> Our county Well Standards permit pressure grouting except where there is known or suspected contamination. Our <br /> Director has interpreted this to allow pressure grouting where site closure has been granted except where the well trace <br /> passes through contaminated zones to uncontaminated ground water(or uncontaminated water overlies impacted <br /> groundwater)—she does not want any potential for additional groundwater to be impacted by the contaminants, even if <br /> the site is being closed. Please present a technical justification for each well you wish to pressure grout.Also note that <br /> pressure grouted wells must be overexcavated to a depth of at least 3 feet bsg with the excavation to be one foot <br /> greater in diameter than the original boring, with a mushroom cap extending 6 inches below and 6 inches above the top <br /> of the casing that has been cut off 6 inches above the floor of the overexcavation. If you cannot meet the mushrooming <br /> requirement,the well should be overdrilled. Our county well standards are available on our website sjcehd.com under <br /> 'Forms'. <br /> NCH <br /> From: Rogers,Tamera [mailto:Tamera.Rogers@arcadis.com] <br /> Sent:Thursday, November 03, 2016 8:54 AM <br /> To: Nuel Henderson [EH] <nhenderson@sjcehd.com> <br /> Subject: RE: 4707 Pacific Avenue, Stockton -Work Plan Addendum <br /> Thank you! Would SJCEHD be amenable to pressure grouting methods? <br /> Thanks, <br /> Tamera <br /> T: +1.408.797.2013 <br /> M: +1.408.239.9616 <br /> From: Nuel Henderson [EH] [mailto:nhenderson@sjcehd.com] <br /> Sent:Thursday, November 3, 2016 8:53 AM <br /> To: Rogers, Tamera <Tamera.Rogers@arcadis.com> <br /> Subject: RE: 4707 Pacific Avenue, Stockton -Work Plan Addendum <br /> Tamera, <br /> 3 <br />