Laserfiche WebLink
t <br /> Mike Infurna [EH] <br /> From: Mike Infurna [EH] <br /> Sent: Wednesday, August 05, 2009 3:14 PM <br /> To: 'Eli Scott' <br /> Subject: RE: Chevron Site 96171 (6633 Pacific Avenue) Follow-up <br /> Although I initially approve pressure grouting these two wells, you have not provided <br /> me information on hole preparation (if any) and the additional requirements for <br /> pressure grout the EHD requires. <br /> Please submit a revision to the work plan that includes the procedures, materials, and <br /> hole/well head preparation, and hole/well head completion specifications. <br /> I will review your submittal and advise. If approved, I will modify the permit, making the <br /> one I sent you today invalid. <br /> Do you plan on air knifing at all around these well heads? Has Chevron waived this <br /> requirement? If Chevron is waiving the air knife clearing hole, then why not just drill <br /> down the casing with a 8/10" hollow stem auger? <br /> Do you just plan on just filling the casing and leaving the traffic box in the ground? <br /> How do you plan on providing the grout cap over the PVC casing after it is pressure <br /> grouted? <br /> Address these and any other concern you're contemplating in the revision. <br /> -----Original Message----- <br /> From: Eli Scott [mailto:eli_scott@hfa.com] <br /> Sent: Wednesday, August 05, 2009 2:22 PM <br /> To: Mike Infurna [EH] <br /> Subject: Chevron Site 96171 (6633 Pacific Avenue) Follow-up <br /> Mike, <br /> To follow up with our telephone discussion regarding wells MW-7 and MW-9, please <br /> see the attached photos for their proximity to the Lincoln Group's remediation <br /> trenching. Please also verify that you approve pressure grouting for these locations to <br /> reduce the risk of property damage to the Lincoln Center's trenching as a result of <br /> over- drilling and due to their depth and the safety issues associated with the "popsicle <br /> method" we discussed. <br /> MW-7: <br />