ML19323H698

Notifies of Noncompliance W/Effluent Limitations of NPDES Permit.Operational Sewage Treatment Plant Effluent Sample Collected on 800521 Exceeded 45 Mg/Liter.Caused by Accumulation of Effluent in Sand Filter

ML19323H698
Person / Time
Site:	Sequoyah
Issue date:	06/10/1980
From:	Elashry M TENNESSEE VALLEY AUTHORITY
To:	Patrick J ENVIRONMENTAL PROTECTION AGENCY
References
TN0026450, TN26450, NUDOCS 8006160069
Download: ML19323H698 (1)

Text

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TENNESSEE VALLEY AUTHORITY norms. TENNESSEE 37828 [

/Uhm/)

%V Forestry Building Wr[W l

l jut'E 1 0 1980

/Mr. James R. Patrick, Jr. , Chief  ;

Water Inforcement Branch '

Environmental Protection Agency, Region IV 345 Courtland Street, NE. l Atlanta, Georgia 30308 -  !

Dear Mr. Patrick:

NCrfIFICATION OF NONCOMPLIANCE WITH EFFLUENT LIMITATI(RIS - NFDEs PREMIT ,

I NO. IN0026450 - SEQUCYAH NUCLEAR PLANT Description of the discharge--Discharge No. 003 - Operational sewage treatmant plant affluent. A sample collected as Hey 21, 1980, and reported by the laboratory on May 27, 1980, contained 76 mg/l of BOD3 ,

exceeding the maximum permit limitation of 45 mg/1.

Cause and period of the noncompliance--The flowmoter in the disaharge pipe from the sand filter became plugged. This caused the septic teak -

effluent to accumulate in the aand filter and fluidised the send filter for at least 48 hours5.555556e-4 days <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br />. The blockage was discovered and corrected on May 1, 1980. The affluent flows on May 2 and 3, 1980, were 0.0556 HGD ]

and 0.0618 NGD, respe.ctively, which were far in emesse of the systems design capacity of 0.0149 MGD. We believe that the blockage followed by the hydraulic overload caused a temporary reduction in the treatment efficiency of the system. A repeat sample collected on May 30, 1980, contained 34 mg/l of BOD 3

, so the per W of noneemp h e has ended.

Steps taken to prevent recurrence of the noncomplyina discharge--Simca the treatment system appears to have recovered, ao further action will l be taken.

l Sincerely,

~'

Nah d T. El-Ashry, Ph.D.

Director of Environmental Quality j cc: Tennessee Department of Public Health Mr. Jamsa F. O'Emilly, Director Division of Water Quality Control Offica of Inspeetten and Baforcement 621 Cordell Hull Building U.S. Nuelear Regulatory e-imaima, Nashville, Tennessee 37219 Regies II

. 101 Marietta Street Mr. Harold R. Dantn A Directat.,/

Atlanta, Georgia 30303 Office of Nuclear Reactor Regulation U.S. Nuclear Regulatory Conesission 7920 Norfolk Avenue Washington, D.C. 2'3555 800616,0 0M

, y An Equal Opportumty Employer

.