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RCC <br /> well construction, construction materials, depths to seals and well screened intervals. However, <br /> based on the review of the June 10, 2010 closure request, it appears the former presence of <br /> residual soil and groundwater contamination has been reduced to below acceptable <br /> concentrations. <br /> RCC now understands that as a condition of regulatory closure, all monitoring wells must be <br /> removed and the boreholes abandoned by July 30, 2011. To that end, RCC and MLt have <br /> selected RSI Drilling, Inc., a qualified C-57 Contractor, to perform the monitoring well removal <br /> and borehole sealing actions. <br /> In the Contractor's experience as well as RCC's, these shallow-depth well casings may be <br /> removed mechanically, once the well monuments are dislodged. As the well casings are <br /> removed, an appropriate neat cement grout mixture is pumped down the casing to ensure grout <br /> delivery at depth. In the event that well casings cannot easily be removed at a particular <br /> location, the Contractor will be prepared to over-ream the boreholes, and remove the majority of <br /> the well casing in that manner. As always, the ultimate goal of these monitoring well <br /> abandonments will be to maximize the volume of borehole sealing with grout, to reduce the <br /> possible future hydraulic communication between subsurface layers and surface water intrusion <br /> at these locations. <br /> Based on earlier discussions with SJCEHD staff, we believe the appropriate SJCEHD forms <br /> have been prepared for your review and processing. Attached to these forms are detailed well <br /> location maps, as well as an RCC summary of well depths. These documents are attached in <br /> PDF and hardcopies will be delivered to SJCEHD offices by Priority Mail or courier. <br /> RCC is seeking your assistance to estimate the SJCEHD fee amount required per the current <br /> fee schedule. Initially, we have been unable to estimate the fee since we are unsure if staff will <br /> consider these abandonment activities by parcel or overall time to complete. The Contractor <br /> stated the work is expected to take approximately 10 hours total for the two Sites. Client and <br /> RCC would greatly that you communicate your fee estimate as soon as possible to RCC, in <br /> order for the Client to obtain the appropriate internal purchase order(s) needed. <br /> RCC and the Contractor would appreciate an expedited review of the Permit Applications, in <br /> order to schedule and mobilize their equipment. Subject to your approvals and SJCEHD staff <br /> availability, RCC would like to complete this work during the week of July 25, 2011. <br /> Thank you again for assisting MonierLifetile, LLC and RCC Group, LLC with this important <br /> matter. <br /> Please feel free to call us at 530-758-8128 to discuss the contents of this Memorandum, or <br /> email me at mai Ito:richard(c�rccgroupllc.net if you have any other questions. <br /> Richard C. Casias, P.G. <br /> Principal Scientist <br /> RCC Group, LLC <br />