NC0000396_Updated Accel Remediation Schedule Signed_20170728

DUKE
tMERGY,
July 28, 2017
Mr. S. Jay Zimmerman, Director
Di,,Wun cf Water Resources
North Carolina Departme,it of Enviirm.mental wual ty
1611 Mail Service Center
Raleigh, Nurth CaruGna 27699-1611
Subject: Interim Actium Plan Schedule Update
Asheville Steam Electric Plant
Dear Mr. Zimmerman:
525 5va1n C.rlalerl btPavt:
Mai; Coue r -v i 3R
CH-Rattn. NeRR Uarolna ;eae0e
95U-373-3119
In a later dated Marsh 28, 2017, DEu documented acceptance of Dake Energy'5 milestuns
scrledales for the Accelerated Remediation 5itz-5 Submitted in February 2017. In than letter DF --Q
5tatad that, "if the anticipated milestone dues in this ruque5t are altered, please intvrm the
appropriate DEQ Regional Office and Cantil Office via email, aocamenting the reasons foF any
changes.
Dake Energy is providing the e, iulubed updated 5chedole fur the Asheville project to formally
req-Ue3t achadula extension. The schedule has been adjasted for the folluning two items:
1) the extended DEQ I uvievv pariud fur the 60% Basis of Design:
2) uncertainty with timing of NPDES permit modifi;.,atian5 that are required to complete
start-up ur tha systems.
If yea ha.a comments and/or gnesduna, please direct them tU me at 980 -373 -3719 -
Sincerely,
Z) ,. .
D. Edwin M. Sullivan, PE
Director - Waste & Gruondwate, Prgram5
Envirunntai .tal, Health & Safety
Enclosure: Interim ,Action Plan Schedule Updates - A5hevifla St -ani -ii Electric Plant
Cc: Jim Wells - Dake Energy

Enc1cSarc
Ashgvillp Steam Elegt. ie Plant
Inturim A.-tiu. t Plan Schedule Update to DEu July 28, 2017
• 300/w Design SabmiMd to DEQ
60% Design Submittal to DEc,.,t
10E0 review comments received July 19, 2017)
• 100% Design Submittal tu DEu
Completed November 21; 2016
Cumplzted Marsh 17, 2017
October 4, 2017
• Final Regulatury Approvals for Cut tstraztiuFi Ortubea 27, 2017
(Includes 100% BOD, Well Recovery, E&SC, etc. excludes NPDES Permit Modification)
Bergin Extractlzn Well and Treatment System Construction Navember 100, 0 r i
NPDES Permit a, DEU Aatharizatiun At tticipated February 1, 2018
i Ext, actian Well and Treatment Systet t t Beg in Operatiun Feb+ aary 14, 2018
IVvie: For —n.euLng purposes ane as eireciee By DEM In irle aanuary 30, cu t i conference call, we assume 17E0 wid
review anu return comments to the Basis of Design packages within 10 bw mess days. Extraction Well and
Treatment System operation =11vi3aly i� vvnt"nycnt "pyre rMulpt of irte NPOE5 perma mMllicaiion or oirler
DE0 amilorization to direct trle extractee grounewater into d7e ash basin on or before the anticipated da,e. The
current schedule does not anticipate additional subm n tls after uvrnr erne ons mvvi; sA lar Trio lOt3% 1500 ti.e.
..n, Aultional requ:reu suUminals aver t v0% 1900 will Belay Me andclpatea start tiate.)