ML20153F438

Comments on Draft NPDES Permit Mod for Plant.Components of Draft Mod Acceptable W/Listed Exceptions

ML20153F438
Person / Time
Site:	Catawba
Issue date:	08/30/1988
From:	Haller W DUKE POWER CO.
To:	Weatherup N SOUTH CAROLINA, STATE OF
References
NUDOCS 8809070295
Download: ML20153F438 (5)

Text

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6 Duxe Powna COMPANY I I

F.O. BOX 33189

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WILLIAM A.HALLER w mcEn [ ' =,,,  ;

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i August 30, 1988 Ms. Nancy Weatherup South Carolina Department of Health and Environmental Control 2600 Bull Street Columbia, 3.C. 29201

SUBJECT:

Catawba Nuclear Station [

NPDES Permit Modification #SC0004278 ,

File: CN-702.13 I In response to your letter dated August 19, 1988, we have reviewed the draft NPDES permit mocification for Catawba Nuclear Station (attached). We offer the following coments: (1) On Page 5 of 24, Part I, A. Effluent Limitations and Monitoring Requirements, the verbiage addressing Measurement frequency for Ethylene Glycol should be corrected to read ""

Measurement frequency is once per occurrence, but need not be more than i twice per month." (2) All other components of the draft modification are t acceptable.  !

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With the correction mentioned above addressed, we accept this permit modification. Should you h .ve any questions, please contact Mitch Griggs at 704-373-7080. Thank you for your attention in this matter.  :

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W. A. Italler, Manager f Nuclear Technical ser' ices  !

MCG/35/rhm Attachment xc: Al Williams, Catawba District U.S. Nuclear Regulatory Conraission Washington, 9.C. ,

t 70295 880830

? ADOCM 05000413

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Ccol i l g i  :

o South Carolina Department of Health

• and Environmental Control 808'd 2600 Eail Street Harry M Hauman. Jr., Chairman Cetumtna, S C. 2920f T"*

t i t. Tonev Graham, Jr. M D., Vge Chairman g/M1 g i

1. , .I N i) '.lohn B. Pata, M D., Secretn y Comminionet Oren L Brady, Jr.

M ghael D. J arrett gE f M5 Moses H. Clarkson, Jr.

d' Evia M. Cohin M D.

""ry s. Joas,, M D August 19, 1988 S

Mr. W.A. Haller, Manager Nuclear Technical Services Duke Power Company P.O. Box 33189 l Charlotte, N.C. 28242 l

' Re: NPDES Permit #SC0004278 Duke Power / Catawba Nuclear Station York County

Dear Mr. Haller:

Per your letter of July 18, 1988 and our meeting of August 8, 1988 with Mitch Griggs and Cheryl Therrien of Duke Pouer, this Office has reviewed your proposed changes to the draft NPDES permit modification at the above referenced facility. Based on these supplemental discussions, we propose the modification to be as shown on the attacheu pages.

The submitted laboratory procedures are currently under review. Comments and/or approval will be sent at a later date. 2 Please review this modification and provide your connents and/or acceptance of the NPOES permit modification. If you have any questions, please contact me.

Sincerely, kt24W}

Nancy Weatharup, P.E.

Industrial and Agricultural Wastewater Division NW/jf cc: Al Williaras g, u-h

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MODIFICATION DATE .

Bureau cf Water Pallution Control ,

A. EfftUfflT Lit!!TATIO:!S NID N0ftITORiflG REQUIR0tEllTS During the period beginning r .he effective date and lasting through the exoiration date the petuittee is authorized w discinarge froni (,utfall(s) serial nmi.ber(s)002, wastewater treatment system discharged to Lake Wylie (Low volume wastes, chemical metal cleaning Such discnarge shall be limited and monitored by the permittee as specified below: waste (#005).

Effluent Characteristics Discharge Limitations Monitoring Requirements

~

Other Units (Specify)

Measurement Sample -

Daily Avg. Daily Max. Frequency Type l

3 Flow-m / day (MGD) - -

1/ week Flow Indicator

~

011 and Grease 15 mg/l 20 mg/l 2/ month G- sb Total Suspended Solids 30 mg/l 100 mg/l 2/ month Grab f Hydrazine -

.43 mg/l *l/ occurrence Grab i

Ethylene Glycol ll.9mg/l 23.8mg/l ** l/ occurrence Grab .

• Measurement freqeuncy is onc r occurrence, but shall be at least twice per month.

• • Measurement frequency is r occurrence, but need not be more than twice per month.

t Q The radiological components of this discharge is regulated by the United States Nuclear Regulatory Commission (NRC 10 CFR 50 Appendix I) and is monitored and reported to the NRC.

y Based on a design flow of 3.4 MGD.

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The pH shall not be less than 6.0 standard units nor greater than 9.0 standard units and shall be ,,,

monitored: once per week by grab sample. ,6 There shall be no discharge of floating solids or visible foam in other than trace amounts. g' Samples taken in compliance with the monitoring requirennts specified above shall be taken at the @

g following location (s): discharge from the wastewater treatment system prior to mixing with any other waste streams. g h - _ _ _ _ _ - -

MODIFICATION DATE: -

Bureau of Water Pollution Control A. O TLUEllT LJ""ATI0tl5 NID refilTORiflG REQUIRDtEllIS During the :r%i beginning on the effective date and lasting through the expiration date the pensittee s authorized to discharge from outfall(s) serial number (s)D04: Radwaste System Discharge Such discharge shall b2 limited and monitored by the permittee as specified below:

C Effluent Characteristics Discharge Limitations Monitoring Requirements

% Other Units (Spe .ify) -

Heasurement Sample .

Monthly Av9 Daily Max. Frequency Type Oil and Grease 15 mg/1 20 mg/l 1/ year Grab Total Suspended Solids 30 mg/l 100 mg/l 1/ year Grab

• 1/ quarter 30 Day Composite Boron

• Grab Hydrazine **l/ occurrence Ethylene Glycol **l/ occurrence Grab

, . ; This discharge is regulated by the United States Nuclear Regulatory Commission (NRC 10 CFR 50 Appendix I)

'~ and is monitored and reoorted to the flRC. However, in the event that chemical metals cleaning wastes as defined

.3 ) in 40 CFR Part 423 are discharged through this serial number, treatment shall be provided to assure j that discharges are in compliance with requirements of Part .423.13. -

Based on a Design of .140 MGD. yy; Samples taken in compliance with the monitoring requirements specified above shall be taken 3,,I E dt the following location (s): Wastewater treatment system prior to mixing with any other waste ,

"y-stream. Boron shall be sampled from the radiological sample location. g

• Record results. ~%

• • Measurement frequency is once per occurrence, but need not be more than once per month. L 8"

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9 .

I, PART III

• Page 24 of 24 Pemit No. SC0004278 MODIFICATION DATE Bureau of Water Pollution Control U. A monitoring program w':11 be implemented to determine downstream concentrations of boron. A downstream sample shall be collected at the radiological sample location.and analyzed for boron once per quarter. If there is no significant impact on water quality after.5 years of data collection, the monitoring requirement will be eliminated.

V. Monitoring of the rad waste discharge for oil and grease and total suspended solids will be implemented for one year. If shown that the above parameters are not in significant' amounts in the rad wastewater the monitoring requirement will be eliminated.

W. Duke will perfom a 316(a) study to assess any measurable thermal effects on the biota of 1.ake Wylie. The first year pre-operational data was collected by a consultant, Industrial Biotest Inc. Duke implemented the second year of pre-operational data collection in May,1983 and will centinue through May,1984. The operational impact assassment phase of the study will be similar to the second year pre-operational phase with only minor changes made if the results indicate modifications are necessary. The plan and any significant change must be approved by Department of Health and Environmental Control. The operational phase will cow.ence when Unit I reaches 50% power and will continue for one year. Another second year of data collection will be initiated when Unit 2 reaches 50% power.

A report will be submitted to OHEC upon completion of each one-year operational phase study.

X. The rad waste discharge will be required to be monitored and results reported of the discharge concentration for Hydrazine (Part ! Page 7 of 24). If values are greater than 15 mg/1, this permit may be modified to provide Hydrazine limitations and/or biological monitoring.

Reporting requirements, pursuant to Section 402 of the Clean Water Act (Regulation 40 CFR 117), Section 102 of CERCLA (Regulation 40 CFR 302), and Section 302 of SARS Title III (Regulation 40 CFR 355), for an exceedence of the applicable reportable quantity for Hyd rtfied w 11 be inittsted if the discharge concentration of Hydrazi exeeds 1 .0mg/1, and the reportable quantity has been exceeded.

DRAF.

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