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Mr. Shawn Napier <br />December 10, 2009 <br />Page 4 <br />~ Additional WBC Additional Consideration or Task 6 costs may be incurred due to <br />poor access or impassible conditions. <br />Additional Groundwater Monitoring Consideration <br />• The TCEQ may not approve a Stillhouse Road Landfill MSD area without <br />confirmation of the approximate extent of groundwater VOC and metals <br />contamination. The results from the 2008 groundwater sampling indicated VOC <br />and metals concentrations exceeding the TCEQ's groundwater protection <br />standards were present at the northern and eastern landfill boundary areas. If <br />requested by the TCEQ and City, WBC will attempt to determine the extent of off- <br />site groundwater VOC contamination by drilling, installing and sampling up to <br />three off-site groundwater piezometers in one mobilization to the site. In addition, <br />up to five additional existing landfill piezometers or monitor wells will be sampled <br />and analyzed for VOCs and metals for confirmation of current on-site conditions <br />while at the site. As part of this monitoring activity, the City will make all <br />arrangements for off-site property access, permission to install and sample <br />groundwater piezometers, and City disposal of all drilling and groundwater <br />sampling wastes. It is recommended the off-site piezometers remain functional <br />until the MSD is approved by the TCEQ and their removal is authorized by the <br />TCEQ. The estimated cost for the piezometer installations and groundwater <br />sampling, analyses and reporting is $17,350. <br />We appreciate the apportunity to be of service to the City. Attached to this proposal are <br />copies of a Proposal Acceptance Sheet, WBC General Terms and Conditions, and WBC <br />fee schedule. If this proposal is acceptable, please return one signed copy of the Proposal <br />Acceptance Sheet to our office. Please contact me with any questions or concerns. <br />Sincerely, <br />Weaver Boos Consultants, LLC-Southwest <br />.4V - <br />Robert S. Ferbend, P.G. <br />Senior Hydrogeologist <br />Attachments: Proposal Acceptance Sheet <br />WBC General Terms and Conditions <br />WBC Annual Fee Schedule <br />(l (77Y OF PAlUS,PROPOSAI.',1009MSD PROPOSAI_ MS'D P20POSAL 12-09.DOC <br />~ <br />~%II~6!?aC~2460,6.) ~~647J///111I316 <br />