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f <br /> Comments: <br /> Attached is the revised permit for the abandonment of the subject wells with Woodward's LCD. <br /> A permit package with boring logs, maps, and permit fees was submitted to you about two weeks <br /> ago. Per our discussions, the well screens will be cut/perforated prior to abandonment as <br /> described below 5W %Xto 19 <br /> Abandonment of 2-inch PVC wells PZ-002A-1, PZ-002A-2, and PZ-003A by a "Mills Knife or <br /> similar": <br /> A knife tool used to cut perforations in well casing after the casing is in the ground. The knife is <br /> lowered into the well to the specified depth by the use of rods, the blade of the knife is engaged <br /> by lifting the blade of the knife by a wireline; as the wireline is pulled up, the blade is forced into <br /> the casing. Two continuous cuts offset by 180 degrees will be performed along the perforated <br /> interval of the PVC wells. Once the screened interval of each well are cut open a tremie pipe is <br /> then lowered to the bottom of the hole and grout is pumped from the total depth of well to surface <br /> (displacing and containing any water from well). Once grouted the top 5 feet is overdrilled and <br /> removed. <br /> Abandonment of 6-inch stainless-steel well GWE-002 by a "Holte Air Perforator": <br /> For the larger diameter SS screen, a Holte Air perforator will be used. This tool screws to the <br /> end of drill pipe and will puncture rows of approximately 1"x 1/10" slots in steel casing having a <br /> thick wall up to .450" (see attached specifications for the Holte Air Perforator). Once the <br /> screened interval of each the well is perforated a tremie pipe is then lowered to the bottom of the <br /> hole and grout is pumped from the total depth of well to surface (displacing and containing any <br /> water from well). After grouting is complete the well vault and top 5 feet of the well will be <br /> excavated, backfilled and the ground surface refinished. <br /> A permit for the abandonment of Vapor Well SVE-004 was also submitted to you about two <br /> weeks ago. This well no longer requires abandonment. Please disregard the previous permit <br /> application for this well. Please call Jason Triolo or me at (510) 652-4500. Thank you for your <br /> assistance with this matter. <br /> Sincerely, <br /> s <br /> Lucas Goldstein <br /> Senior Engineer <br />