ML20210L119

NPDES Noncompliance Notification:On 970506,discovered Exceedance of Fecal Coliform.Caused by Insufficient Levels of Chlorine,Compounded by High Level of Nitrite.Increased Level of Chlorine & Performed Addl Monitoring

ML20210L119
Person / Time
Site:	McGuire, Mcguire
Issue date:	05/12/1997
From:	Russell D DUKE POWER CO.
To:	Gleason R NORTH CAROLINA, STATE OF
Shared Package
ML20210L109	List: ML20210L105 ML20210L110 ML20210L119 ML20210L147 ML20210L165 ML20210L192
References
NUDOCS 9708210004
Download: ML20210L119 (2)

Text

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ll l l Dubt Ibuer Company McGuirr Nuclear Station (794)g75 4n00 12700 Hagers ferry Road ^

Huntersville, NC 28078 ~

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DUKEPOWER May 12,1997 Mr. Rex Gicason, P.E.,

Regional Manager, Water Quality Section North Carolina Department of Environmental, llcalth, and Natural Resources 919 North Main Street Moorcsville, North Carolina 28115 Re: Notification oi Fecal Coliform Execcdance McGuire Nuclear Station, WT Sanitary System NPDES Pennit # NC0024392 Mecklenburg County, N.C.

Dear Mr. Gleason:

This written notification is pursuant to: Part II, Section E (6XDX2,3), of the Duke Power Company, McGuire Nuclear Station (WT System), NPDES Permit (NC0024392). This is a follow up written report required to be submitted to the North Carolina Department of Environmental, llcalth, and Natural Resources for the May 8,1997, for the fecal coliform execcdance, on Outfall 003. Telephonc notification was made to Mike Parker of the Moorcsville Regional O!Tice on May 9,1997, at approximately 10:00 a.m., by Eddic Faulkner of the Duke Power's McGuire Nuclear Site, Environmental Management.

The nature of the non-compliance was the exccedance of the daily maximum fecal coliform. The sample taken on May 6,1997, showed >l600 colonics per 100 ml. Upon investigation, insufficient levels of chlorine, compounded by high level of nitrite was the major causes for the exccedance.

The chlorine level was increased, additional monitoring was performed, and additional sample was taken to casure the WT System was back in compliance. The sampic taken on Friday, May 9,1997, showed <2/

100ml ,

Should you have any comments or concerns, please contact Eddie Faulkner Environmental Management at 704 875-5158.

Dayna R 11 P.E.

Environmental Manager McGuire Nuclear Station xc: Mr. Dave Goodrich, NCDEHNR, Raleigh, N.C.

9708210004 970813 PDR ADOCK 05000369 S PDR an=a an =w o.,

l March 20,1997 Mr. Rex Gleason Regional Manager, Water Quality Section, North Carolina Department of Environmental, Health, and Natural Resources 919 North Main Street Mooresville, North Carolina 28115 7 Re:

Compliance Evaluation Inspection Notice of Deficiency McGuire Nuclear Station, NPDES Permit Number NC0024392 Mecklenburg County Attention: Richard Bridgeman:

As a result of the Compliance Evaluation Inspection, on February 27,1997, by Patricia Beam, the Mooresville Regional Office issued a Notice of Deficiency requiring our response. The deficiency was based on DEllNR's interpretation of the sampling protocol requiring the use of multiple standards when calibrating chlorine testing equipment.

De McGuire laboratory uses the DR 100 Hach Colorimeter Monitor, to test wastewater samples for chlorine, and per the manufacturers instructions, one standard is used for calibration before and after each use. The llach Company, states that "using the 1.0 mg/l standard before and after each use to verify the correct calibration, and within the stated pH range, is sufficient for the DR 100, for verification of calibration" The meter was also calibrated against 8 standards 0.05 mg/l to 3.5 mg/l after its purchase in November of 1994 (see attachment 1). Herefore, given the Hach company's position and given Standard Methods refers to the use of " standards" without any specific detail, we have used the 1.0 mg/l calibration standard with confidence in its accuracy. After the inspection, the DR-100, was tested again on March 17, 1997 usini 9 standards in the range of 0.05 mg/l to 4.0 mg/l. De results showed the instrument to be accurate and within tolerance (see attachment 2 ).

In order to comply with the Division of Water Quality's policies, we have changed our procedures to reflect the requirement to calibrate the DR-100 Co'orimeter Chlorine Tester against multiple standards, on an annual basis, in addition to current methods.

If you require additional information, please contact Eddie Faulkner at 704-875-5158 or me at 704-875-5969.

icerely, I

D yua e 'ick P.E.

Environmental Manag -

McGuire Nuclear Station xe:

Mr. David Goodrich, NCDElINR - Raleigh Office Attachments

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