ML20086F101
| ML20086F101 | |
| Person / Time | |
|---|---|
| Site: | McGuire, Mcguire |
| Issue date: | 07/06/1995 |
| From: | Mcmeekin T DUKE POWER CO. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| NUDOCS 9507130021 | |
| Download: ML20086F101 (14) | |
Text
{{#Wiki_filter:gq - l g+ -lh ' DukeIbwerCompany. T C M6 fans ' McGuire Nuclear Generation Departrnent Vicehesident 12700Hagers FerryRoad(MG01VP) (704)8754800 , ^ Huntersville,NC280i&B985 (704)8754809 Fax .l 0-- July.6, 1995 U. S. Nuclear Regulatory Commission -Attention: Document Control Desk Washington,.D.C. 20555
Subject:
'McGuire Nuclear Station Docket Nos. 50-369, 50-370 Comments on NPDES Draft Permit No. NC0024392 Pursuant to McGuire Nuclear Station Environmental Protection Plan (EPP), Appendix B, Section 3.2 of the McGuire Technical Specifications, please find attached McGuire's comments to the state of North Carolina with respect to the subject NPDES Draft l [- Permit. Questions or problems with respect to this report should be directed to Kay Crane, McGuire Regulatory Compliance at (704) 875-4306. Very truly your;, l T. C. McMeekin, Vice President t -: McGuire Nuclear Station 1 TCM:KLC:klc ) cc: Mr. Victor Nerses, Project Manager i Office of Nuclear Reactor Regulation. 1 U. S. Nuclear Regulatory Commission { Washington, D.C. 20555 Mr. S. D. Ebneter, Regional Administrator l U. S. Nuclear Regulatory Commission Region II 101 Marietta Street, NW - Suite 2900 Atlanta, Georgia 30323 Mr. George Maxwell Senior Resident Inspector McGuire Nuclear Station 9507130021 950706 PDR ADOCK 05000369 )Mg
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S. Nuclear Regulatory Commission pf- _ Document. Control Desk Page 2 cc: N. G. Atherton J. S. Carter D. W. Phillips J. E. Snyder-EC050-ELL p I l 1 I l L
4-9 DUKE POWER'S COMMENTS ON DRAFT NPDES PERMIT NO. NC0024392 FOR TIIE McGUlllE NUCLEAR STATION l
- 1. PART A (1): EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS FINAL (OUTFALL 001):
J In our current NPDES permit, we were required to monitor for " Total Residual = Chlorine" In this dran permit, we are required to monitor " Free Available Chlorine" and in footnote "4", monitoring for " Free Available Chlorine" is referenced. However, in footnote "5", references are made for " Total Residual Chlorine". This ambiguity needs to be clarified. We request that the wording in the current permit be maintained. The draft permit states: " Monitoring shall begin immediately upon start-up of chlorination and shall continue until free available chlorine is no longer detected. Neither free available or total residual chlorine may be discharged from any unit for more than two hours in any one day unless the discharger demonstrates to the State that the units in a particular location cannot operate at or below this level of chlorination." The current permit wording more specifically details our concerns, mainly because of potentiel zebra mussel fouling. The current permit states: " Monitoring shall { begin immediately upon stan-up of chlorination and shall discontinue when TRC is no longer detected. Total residual chlorine may not be discharged from any single generating unit for more than two hours per day unless the discharger demonstrates that discharge for more than two hours is required for macroinvertebrate control." Also, the current permit's language follows 40CFR423 guidelines more closely. We request that the wording in the current permit be maintained. l A new monthly monitoring requirement for Selenium at this outfall is incIuded in this draft permit. This is a monitoring and repon requirement and there is at i present no discharge limit. It is our understanding from a recent discussion with your of! ice that this monitoring requirement is based on a Selenium value of 2.9 ug/L that was reported in the permit renewal application. ..a. 2 L l
We request that the monitoring requirement for Selenium be deleted for these reasons: (1) The concentration of Selenium on the iniake waters for that same day was 1.7 ug/L. (2) Both sample values are below Water Quality Standards. (3) Outfall 001 is once-through cooling water. (4) Selenium is not a by product of nuclear generation. Therefore, there is n'ot a reasonable potential for this constituent to be present in the efTluent as a result of McGuire operations.
- 2. PART A (2): EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS FINAL (OUTFALL 002):
On Outfall 002, we monitor for nutrients such as Total Nitrogen, Ammonia as Nitrogen, and Total Phosphoms. We request that monitoring for these nutrients at this outfall be deleted in favor of monitoring at the fmal outfall prior to discharge to the Catawba River. This is described in more detail in our comments on Outfall 005. in our current permit, we monitor for MBAS. We have historical data (Se6 e Attachments 1 and 2) indicating that MBAS is typically <0.3 mg/L. The Water Quality Standard for MBAS is 0.5 mg/L. At these levels, we request that the monitoring frequency for this parameter be reduced to quarterly monitoring. In this draft permit, MBAS was listed in units of ug/L. Historically, we have reported MBAS as mg/L. We request that MBAS units be maintained as mg/L in order to make paperwork and reporting consistent. This comment would be applicable to Outfall 003 in the permit as well. In the drafl permit, a new monitoring requirement is listed for BOD, In the permit renewal application, the value reported for BOD at this outfall was 1.7 mg/L. If after monitoring this parameter for at least 1 year the values are consistently low, we request that this monitoring requirement be deleted, f 3
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- 3. PART A (3): EFFLUENT LIMITATIONS AND MONITORING REQUlREMENTS FINAL (OUTFALL 003):
f In the dran permit, the monthly average ind daily maximum limits for " Total Suspended Solids" (TSS) for the sanitary treatment system have been lowered to Steam Efiluent Limitations Guidelines. The new TSS limits are listed as 30.0 mg/L and 100.0 mg/L for monthly average and daily average respectively. We will not be able to meet the new monthly average TSS limit proposed in this draft permit. Since Outfall 003 is an internal outfall and does not discharge directly to Waters of i the State, Steam Efiluent Limitations Guidelines should not apply. The sanitary system discharges into the Waste Water Collection Basin which provides additional settling. We therefore request that TSS monitoring be required at Outfall 005. (See comments at Outfall 005) Steam Efiluent Limitations Guidelines for Oil / Grease are proposed for Outfall 003 in this dran permit. The new Oil and Grease limits are listed as 15.0 mg/L and 20.0 mg/L for monthly average and daily average respectively. Because these limits currently exist at Outfall 005, we request that our current Oil and Grease limits of 30 mg/L and 60 mg/L be maintained. We request that the monitoring frequency be reduced to every other month because of good compliance history (i.e. no violations in the previous three years). As a reminder, this outfall will be deleted when the system is connected to the Charlotte Mecklenburg Utilities Deprtment (CMUD) by September 1,1997. Also, the proposed pH limits of 6 to 9 have been added to this outfall. Since Outfall 003 is an internal outfall with no direct discharge to the Catawba River, we request that pH limits not be added to this outfall in the new permit, and that we be allowed to continue to monitor and report pH until the scheduled CMUD connection. In addition, new parameters for Outfall 003, the sanitary treatment system, are included in this dran permit. These monitoring and reporting requirements are for Ammonia as Nitrogen, Total Phosphoms, and Total Nitrogen. As this is an internal outfall, adding these new monitoring and reporting requirements will create unnecessary work for both the State and Duke Power and will provide limited value. We request that monitoring for these nutrients at this outfall be deleted in favor of monitoring at the final outfall prior to discharge to the Catawba River. This is described in more detail in our comments on Outfall 005. In this dran permit, MBAS was listed in units of ug/L. Historically, we have reported MBAS as mg/L. We request that MBAS units be maintained as mg/L in order to make paperwork and reporting consistent. 4
1 y j u A new monthly monitoring requirement for Selenium at this outfall is included in this draft permit. This is a monitoring and report requirement and there is at present no discharge limit. Selenium is not a by product of nuclear generation. t Therefore, there is no reasonable potential fo'r this constituent to be present in the effluent as a result ofMcGuire operationsc We request that the monitoring for Selenium be deleted. ~' A new monthly monitoring requirement for Silver at this outfall is included in this draft permit. This is a monitoring and report requirement and there is at present no discharge limit. We have no reason to suspect Silver to be in the discharge. However, we request that we monitor monthly for 6 months and then be allowed the option to re-evaluate the need to continue this monitoring in conjunction with DEM.
- 4. PART A (4): EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS FINAL (OUTFALL 004):
For Hydrazine, the monitoring frequency is listed as " daily" in the draft permit i although the footnote indicates that it is by " batch" We request that the frequency just reference the footnote with an asterisk and not specify " daily". This is the way - the requirement is currently listed in our current permit. Hydrazine discharges are rare and may occur only once per year, if at all. Flow is listed as a " daily" monitoring requirement in the draft permit. We request that flow monitoring remain " weekly" as in the previous permit. There has not been any significant change in the flow of this outfall to warrant an increase in monitoring frequency. The measurement frequency for monitoring Total Suspended Solids and Oil and Grease on the chemical metal cleaning outfall has been changed from quarterly to daily monitoring. Due to an excellent compliance history for the past 3 years, zero violations, and very low reported values, we believe there is no reasonable i justification for the increased monitoring. Attachments 3 and 4 show the data for the past 2 years for Oil / Grease and TSS. Thus, we request that the monitoring requirements for TSS and oil / grease be reduced to semi-annually. i The wording in the footnote that states: "In the event the turbine building sumps are discharged to Lake Norman and are not treated in the radwaste proceesing system.. " We request that the wording be changed to: "In the event the turbine building sumps are discharged through Outfall 001 instead of Outfall 002, the ) above discharge limitations shall also apply to the turbine building sump discharge." 2 5
- 5. PART A (5): EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS FINAL (OUTFALL 005):
Outfalls 002,003 and 005 all have monitoring requirements for nutrients.. These include Ammonia as Nitrogen, TKN, Nitrate plus Nitrite Nitrogen, and Total Phosphorus. As indicated earlier, Outfall 003 is an internal outfall to 005. Also, Outfall 002 discharges at the same location as Outfall 005. Since the purpose of monitoring these nutrients is to obtain data for State Waste Load Allocation calculations, we would like to propose an alternative. We request that the individual monitoring for nutrients at outfalls 002,' 003 and 005 be deleted. In their place, we propose to monitor for these nutrients at the point where Outfalls 005 and 002 come together prior to the Catawba River. The flow at this point is the combined flow of Outfall 002 and Outfall 005. This would provide the State with one number on which to base Waste Load Allocations instead of 2 and reduce sampling. (NOTE: The Discharge Monitoring Reports (DMRs) would need to be amendcd to account for this change.)
- 6. PART A (6): EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS FINAL (OUTFALL 006):
The footnote "There shall be no discharge or floating solids or visible foam in other than trace amounts" is redundant for this outfall. Outfalls 004 and 006 both discharge upstream of Outfall 001. This footnote is already included on the monitoring page for Outfall 001.
- 7. PART III, CONUITION F: ACUTE TOXICITY PASS / FAIL PERMIT LIMIT QUARTERLY):
In this Section, the Fathead Minnow is listed as the test organism,for the 24 hour static acute toxicity pass / fail test. We request continued approval to use Daphnid in our Acute _and Chronic Toxicity tests. We request the wording: "The monitoring shall be performed as a daphnid 24 hour static test, using efTluent collected as 24 x 1 equal volume per hour composite.. during the months of February, May, August and November." The parameter codes that correspond with the 24 hour daphnid test is "TGA3B" for Ceriodaphnia or "TGA3D" for Daphnia pulex.. (See, Footnote 3 of "EfIluent Limitation and Monitoring Requirements"- Outfall 001 of this drafl permit.) 6
~ The current permit includes the statement "Failare to submit suitable test results will constitute noncompliance with mon'.oring requireraents, but will not subiect the oermittee to civil nenalty if the nenaitteS has demonstrated a diligent attempt to conduct a suitable retest and has engapui~the services of a laboratory with valid certification under North Carolina's '.aboratory certification orogram." The wording that is underlined is not present in the dran permit. We request that the wording that is underlined be included in the dran permit. This applies to Conditions 'G' below and 'H' as well.
- 8. PART III, CONDITION G: ACUTE TOXICITY PERMIT LIMIT QUARTERLY):
This Section references EPA Document 600/4-85/013 entitled "The Acute Toxicity of Efiluents to Freshwater and Marine Organisms." The latest EPA guidance on this protocol should be listed as EPA /600/4-90/027F entitled "The Acute Toxicity of Effluents and Receiving Waters to Freshwater and Marine Organisms." Also in this section, a reference is made to a 24 hour composite sample. Footnote 4 of"EfIluent Limitation and Monitoring Requirements" - Outfall 002 of this draft permit specified " grab sample" We request that this section reference "as specified under Efiluent Limitation and Monitoring Requirements" l 1 7
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