Laserfiche WebLink
,,#awl `. <br />The soil boring located hydrologically downgradient from the former tanks will be further advanced to <br />approximately 35 feet below grade and completed as a groundwater monitoring well. The well will be <br />constructed of 2 -inch diameter PVC casing with 0.010 inch slotted screen installed from the bottom of <br />the boring to approximately 5 feet above first encountered groundwater to allow for seasonal <br />groundwater fluctuations. A two foot thick bentonite plug will be placed above the filter pack. The <br />remaining annular space will be grouted with a cement slurry to ground surface. <br />The well will be developed, purged and sampled prior to placing the bentonite plug and the cement <br />grout. Groundwater samples collected from the well will be delivered under chain of custody to Argon <br />Laboratories and analyzed for TPHg and BTEX. <br />A technical summary report will be prepared which will include all analytical results, a site plan with <br />sample locations, conclusions, and recommendations. If appropriate, the report will include an <br />evaluation of risk to public health posed by subsurface contaminants remaining at the site. <br />The well will be purged and sampled approximately 30 days after the first sampling event has been <br />completed to confirm initial results. <br />The field work is scheduled to be performed on Friday, June 14, 1996 if PHS/EHD can accommodate <br />Mr. Ranuio's request for expedited review of this workplan. All work will be performed in accordance <br />with the existing site safety plan on file with PHS/EHD, and Ground Zero's Quality Assurance/Quality <br />Control (QA/QC) Plan, Attachment B. <br />Please call John Lane or Greg Stahl at Ground Zero if you have any questions regarding the project. <br />Respectfully, <br />Ground Zero Analysis, Inc. <br />John P. Lane <br />Seni r Geologist <br />--7 /). :A0 <br />Gregory P. Stahl, RG #5023 <br />CA Certified Hydrogeologist No. 264 <br />JPL <br />STAHL <br />No. 5023 � <br />.q <br />.'�� <br />Attachments: Tabulated Data and Site Plan from Uriah Environmental <br />cc: Mr. Mark Ranuio <br />gro mdu\]me\rnnuio.wk2 3 <br />