ML20039F490

Notifies of Change in Discharge Flow & Discharge & Monitoring Locations Per NPDES Permit Requirements.Changes Reflect Const Progress.Future Changes Expected Due to Completion of Final Grading & Seeding

ML20039F490
Person / Time
Site:	Sequoyah
Issue date:	01/07/1982
From:	Elashry M TENNESSEE VALLEY AUTHORITY
To:	Traina P ENVIRONMENTAL PROTECTION AGENCY
References
NUDOCS 8201130042
Download: ML20039F490 (3)

Text

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Wajyr; Managemen t, Di,vi s fon! ' " / . p 't- l , MNI.119825 2 m U.S. Environmental Pr*dtection Agen'cy 5- s= =m. ,,,,, ,,, -

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Dear Mr. Tra in:

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SEQUOYAH NUC1'BAR PLAN 7 NPDES NO. TN0026450 - CHANGE N. DISCIIARGE FLOW, DISCIIARGEI LO'$ TION , AND MONITORING LOCATION FOR hDSN ' 005 (M10,096)  ? 4

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In accordance with PgtNL. A,N' of lil e pojects permitthis .

is to notify 'you of : N* .

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1. \ the redhet[1\ n in f(6w t?ironge DSN odSi J ,

hm,a.:, result of Pekouting tJIe ruqb f f rom the howyqq \ RLd Waste (LLP.W) stC e conptruction prda W thrt,ug D(Nc031 and U3'/ : ,

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'd . tlN change in locatiort-oMSA 005 from a 'dtt, charge

.pdin'. inty the dif fuse}- pohd;'hU a pakoktGs~ charge ,

points inte thegouth sidef of 4thd copling< water return

' channel; and

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3. the change in the moni[ din'gipoint'for"DSE 005.

These changes reflect the progreds of construct'ior. 'a't the site.

DSN 005 was previously identified as runoff the LLRW storage construction area and cobling tower No. 2 ..tetion area.

This runoff drained-by way of a ditch arounu the cooling tower and through an underground duct to.;the diffuser pond. NPDES permit samples were collected at the upstream end of the under-ground duct. Since the LLRW construction activity has been temporarily stopped and the cooling tower completed, TVA has filled the drainage ditch around the base of the cooling tower and graded the area to a gentle slope (less than about 3 percent),

and in a manner that will prevent future LLRW construction runoff from flowing into this area. Flow from the LLRW construction area will be routed to DSNs 031 and 032 as indicated in my letter to Mr. Howard D. Zeller dated June 29, 1981.

The drainage area around cooling tower No. 2 is about six acres.

Any runoff from the six acres will flow into a gravel area under the base of the cooling tower and will filter through the gravel underlayer into a subsurface drainage system. This drainage system discharges through two outfalls into the south side of the cooling water return channel between the two cooling towers.

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8201130042 820107 PDR ADOCK 05C00327 p PDR ,.

An EquM opportunity Employer - SIf6

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l Mr. Paul J. Traina, Director JAN 071982 A f ter completion o f final grading and seeding, we would consider DSN 005 to no longer be a point source of construction runoff but a part of our permanent stormwater drainage system. Accordingly we would, at that time, terminate the monitoring of the discharge.

Since only minor amounts of finish work remains to be done, we request approval to terminate monitoring activities now.

Until such time as (1) you approve the termination of monitoring activities or (2) we complete the final grading and seeding of the drainage area, we will continue to monitor the discharge.

Samples of the runoff will be collected from one of the underground drain discharge pipes and reported as DSN 005. When the cooling water system is being operated in the closed mode, the underdrain discharge pipes may be submerged; however, the frequency at which this occurs should not prohibit us from getting the samples required by the permit.

Although we plan to phase out the use of DSN 005 flow as a discharge covered by the NPDES permit, we want to reserve the 005 designation in the event additional construction activities are needed in this area.

If you have any questions concerning this temporary change in discharge location, please call Abraham 11. I,oudermilk at FTS 872-8971 or (205) 386-2971.

Sincerely, e

, I Mohamed T "

.417, Ph.D.

Assistant Manager of Natural ih sources (Environment) ec See page 3.

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St r . Paul J. Traina, Director 'O' cc: _h! r . liaro d it. Denton, Director Of fice of Nuclear Iteactor llegulation U.S. Nuclear llegulatory Commission 7920 Norfolk Avenue Washington, DC 20555 hir . Jack h!cCormick, Basin h!anager Southeast llegional llealth Of fice Division of Water Quality Control

) Chattanooga Basin Office 2501 hiilne Street Chattanooga, Tennessee 37100 hir . James P. O'Iteilly, Director Office of Inspection and Enforcement U.S. Nuclear llegulatory Commission , llegion II 101 h!arietta Street - Suite 3100 Atlanta, Georgia 30303 Tennessee Department of Public Ilealth Division of Water Quality Control 631 Cordell Hull Building Nashville, Tennessee 37219

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