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HomeMy WebLinkAboutNC0004961_Additional Assessment of Groundwater_20120316 ,• TAFILE NCDENR North Carolina Department of Environment and Natural Resources Division of Water Quality Beverly Eaves Perdue Charles Wakild, P.E. Dee Freeman Governor Director Secretary • March 16, 2012 Attn: Ed Sullivan and Allen Stowe Water Management Duke Energy Corporation EC 13K/Post Office Box 1006 • Charlotte, NC 28201-1006 RE: Additional Assessment of Groundwater Allen, Buck, Marshall & Riverbend Stations Dear Mr. Sullivan and Mr. Stowe: • We appreciate your meeting with staff of the Mooresville Regional Office of the Division of Water Quality's Aquifer Protection Section (APS) on March 2nd to discuss groundwater monitoring efforts at the subject facilities in the Mooresville Region. To summarize the meeting, APS has requested that Duke begin additional assessment activities at each of the stations where measured and modeled concentrations of groundwater constituents exceed 2L groundwater quality standards at the compliance boundary. Additional assessment activities may be specific to issues at certain wells and include, but are not limited to: statistical evaluation of constituents that may be naturally occurring, refining groundwater models for Riverbend and Allen to better describe the flow systems, continued well development and evaluation of well location and construction, and the assessment of horizontal and vertical extent of constituents in excess of standards. • We appreciate your cooperation and willingness to continue assessment and will look forward to a plan outlining a timeline for these activities. Feel free to contact me at(704)235-2180 or via email at Andrew.PitnerAncdenr.gov should you have any questions. Sinc ely, • Andrew H. Pitner, P.G Regional Aquifer Protection Supervisor Cc: APS Raleigh (Debra Watts by email) SWPS Raleigh (Sergei Chemikov by email) William Miller, Altamont Environmental (by email) Division of Water Quality I Aquifer Protection Section 1 Mooresville Regional Office 610 East Center Avenue,Suite 301,Mooresville,North Carolina 28115 NAthCaroluia Phone:704-663-16991Fax: g663 040 Internt www.ncwatenuali�orAalurali An Equal OpportunitylAtfornative Action Employer