ML20070Q514

NPDES Noncompliance Notifications:Over Two 12 H Periods,Ph Values Over Specs While Releasing 45,000 Gallons Max.On 821203,coliform Analysis Revealed Concentration Above Spec. on 821212,chlorine Analysis Not Performed

ML20070Q514
Person / Time
Site:	Calvert Cliffs
Issue date:	01/11/1983
From:	Russell L BALTIMORE GAS & ELECTRIC CO.
To:	Haynes R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
References
NUDOCS 8301260489
Download: ML20070Q514 (3)

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SG-54 B ALTIMORE G AS AND ELECTRIC COMPANY P.O. B O X 14 7 5 B ALTIM OR E. M A R YL A N D 21203 HUCLEAR POWER DEPARTMENT COLVERT CLIFFS NUCLEAR POWER PL ANT LUSBY. M ARYL AND 20657 January 11, 1983 b!r. Ronald C. Ilaynes, Director U. S. Nuc1 car Regulatory Commission Region 1 631 Park Avenue King of Prussia, PA 19406

Dear h!r. Ilaynes:

In accordance with Section 3.2, #1 of the Environmental Protection Plan, Appendix B, Part 2 Technical Specifications, enclosed is a copy of the violation of the NPDES permit for the Calvert Cliffs Nuclear Power Plant.

Very truly yours, L. B. Russell Plant Superintendent LBR/GEB/feb cc: Director, Office of h!anagement Information and Program Control blessrs : A. E. Lundvall, Jr.

J. A. Tiernan 8301260489 830111 PDR ADOCK 05000317 S gd pyg

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B ALTIMORE G AS AND ELECTRIC COMPANY P.O. BOX i475 B A LTIM OR E. M A R YL A N D 212o 3 NUCLEAR POWER DEPARTMENT cALvERT CLIFFS NUCL E A R PO WER PL AN T LU58Y. M AR v6 AND 206 U January 5,1983 Office or Environmental Programs Waste Management Administration 201 West Preston Street Baltimore, Maryland 21201 Attention: Mr. Ronald Parise Re: Maryland State Discharge Permit No. 74-DP-0187 and NPDES Permit No. MD 0002399

Dear Mr. Parise:

Four incidences of NPDES noncompliance are detailed below, each having been reported by telephone previously.

On two occasions Outfall 004 experienced pH values which were over the NPDES specification of 9.0. These occurred while releasing 45,000 gallons maximum, high pH water (--10.3) during two 12 hour1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> periods, to the north storm drain system. This high pH water was being mixed with bay water from the screen well sump pumps to provide dilution. Rigorous monitoring was performed; nevertheless, two of nine grab samples indicated 9.0 pH.

Average pH values of 9.0 for the first release (December 1,1983 and 9.2 for the second release (December 6, 1982) were observed. To reduce the pH, acid was added to the high pH water as it was draining. This was not a routine discharge and steps had been taken to alleviate the impact.

On December 3,1982, the weekly coliform analysis from Outfall 001 showed a concentration of >1609 mpn/100 ml which is greater than the specification of 70 mpn/100 ml. However, a chlorine residual of c2.0 ppm was maintained in the contact tank during this time and the next coliform count was 26 mpn/

100 ml. It is therefore suspected that the dilution buffer used in this analysis was contaminated, although at the time thought to have been sterilized.

This suspected mixup occurred when the previous operator had to be replaced on the day the analysis was set up and thus this information was not clearly exchanged. The use of proper lab procedures has been emphasized to the current operator.

On December 12, 1982, effluent chlorine analysis from Outfall 001 was not performed. Due to severe weather conditions, the operator failed to appear en site. The residual chlorine was within the specification of 0.5 mg/l

, O Mr. Ronald Parise January 5,1983 before and after the missed analysis. The operators have been re-instructed on call-in procedures for times they are unable to get to the work site so that future incidences will be avoided.

Should you have questions regarding this information, please feel free to call.

Very truly yours, MA

. . ussell Plant Superintendent LBR/EME/feb cc: U. S. Nuclear Regulatory Comission