ML18025B785

NPDES Noncompliance Notification:On 820513,samples Taken of Sewage Treatment Plant Effluent Flow Exceeded Tech Spec Limit.Caused by Malfunctioning of Lift Pumps in Equalization Tank.Mod Proposals Being Reviewed

ML18025B785
Person / Time
Site:	Browns Ferry
Issue date:	06/08/1982
From:	Elashry M TENNESSEE VALLEY AUTHORITY
To:	Marlar J ENVIRONMENTAL PROTECTION AGENCY
References
NUDOCS 8206140121
Download: ML18025B785 (2)

Text

I LyNNF~c,l- C VAl,l.LgY ALj I I IOBlT I<N(')XVIt I I=. I'- NN P.'a~C I-,*Ist>><)."s TUA Hailroom JuN 8 1982 Hr. John Marlar, Chief Facilities Performance Branch HQ, FDiE cOPV Water Management Division U.S. Environmental Protection Agency, Region IV 345 Courtland Street, NE.

Atlanta, Georgia 30365

Dear Hr. Marlar:

NOTIFICATION OF NONCOMPLIANCE WITH EFFLUENT LIMITATIONS NPDES PERMIT NO. AL0022080 BROWNS FERRY NUCLEAR PLANT Descri tion of the dischar e Discharge No. 006 Sewage treatment plant effluent. Samples collected on Hay 13, 1982 and reported by the laboratory on Hay 21 exceeded the maximum permit limitation as shown below:

Parameter Concentration Maximum Limitation BODg 74 mg/L 45 mg/L Total Suspended Solids 65 mg/L 45 mg/L Cause and eriod of the noncom liance This sewage treatment system is designed for a flow of 30,000 gpd. However, for the 4 calendar days prior to sample collection the flow averaged 38,300 gpd. On May 13 when the effluent.was sampled, the instantaneous flow was approximately 3,168 gpd, yet the daily totalized flow equaled 42,400 gpd and the chlorine residual was zero. The low and varied instantaneous flow is due to malfunctioning of lift pumps in the equalization tank. The excessive and surging flow

'caused hydraulic overloading of the treatment system and carryover of solids into the chlorine contact tank resulting in these violations.

Ste s taken to reduce eliminate, and revent recurrence of the noncom

~dischar e Modigication proposals are presently being reviewed. 'l<e will l in continue to operate the treatment system as efficiently as possible until the system is modified or replaced.

Sincerely, Hohamed T. El-Ashry, Ph.D.

Assistant Manager of Natural Resources (Environment) cc: Alabama Water Improvement Commission Public Health Services Building Hontgomery, Alabama 36130 Director Division of Licensin U.S. Nuclear Regulatory Commission Washington, DC 20555 820bf40l21 0g0002g9,,I",',;

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