L-2006-102, Environmental Protection Plan Report Approved Minor Revision to Industrial Wastewater Facility Permit
| ML061150517 | |
| Person / Time | |
|---|---|
| Site: | Saint Lucie  |
| Issue date: | 04/17/2006 |
| From: | Johnston G Florida Power & Light Co |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| EPP 3.2.3, L-2006-102 | |
| Download: ML061150517 (6) | |
Text
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Florida Power & Light Company, 6501 S. Ocean Drive, Jensen Beach, FL 1 4957 April 17, 2006 L-2006-102 10 CFR 50.36.b EPP 3.2.3 U. S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, DC 20555 RE:
St. Lucie Units 1 and 2 Docket Nos. 50-335 and 50-389 Environmental Protection Plan Report Approved Minor Revision to Industrial Wastewater Facility Permit The attached minor revision to the Industrial Wastewater Facility Permit is being submitted pursuant to the requirements of Section 3.2.3 of the St. Lucie Units 1 and 2 Environmental Protection Plans. The revision was approved on March 29, 2006.
Very truly yours, Gordon L. Johnston Acting Vice President St. Lucie Plant GLJ,/KWF Attachment
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St. Lucie Units 1 and 2 L-2006-102 Docket Nos. 50-335 and 50-389 Attachment Environmental Protection Plan Report Page I of 5 Approved Minor Revision to Industrial Wastewater Facility Permit Department of Environmental Protection Twin Towers Office Building Jeb Bush 2600 Blair Stone Road Colleen M. Castille Governor Tallahassee, Florida 32399-2400 Secretary March 29,2006 BY CERTIFIED MAIL RETURN RECEIPT REOUESTED Mr. William Jefferson Jr.
Vice President - St. Lucie Plant Florida Power & Light Company 6501 S.Ocean Drive Jensen Beach, Florida 34957 RE:
Florida Power & Light Company (FP&L)
DEP File FL0002208-004-IWB/MR St Lucie Power Plant, St. Lucie County
Dear Mr. Jefferson:
The Department has received FP&L's application dated November 30, 2005 for a minor revision of wastewater permit FL0002208. The minor revision requests the discharge of dewatering effluent associated with the construction of an on-site spent nuclear fuel dry storage facility, also known as an Independent Spent Fuel Storage Installation (ISFSI).
The Department has determined that this activity qualifies as a minor modification of the operations at the St Lucie Plant pursuant to Rule 62-620.200(24), Florida Administrative Code (F.A.C.), and can be authorized by a minor permit revision pursuant to Rule 62-620.325(2), F.A.C. This letter and attachment constitute a minor revision to the referenced wastewater permit. Approval of this permit revision is based on characterization and flow data for cooling water canal intake from the Atlantic Ocean and the proposed intemnal discharge of ground water from dewatering activities provided by the applicant and included in the revision application. The requested intemnal discharge is authorized only when all circulator pumps from at least one of the two generating units are in operation.
This letter and attachment shall be attached to Permit FL0002208. All other conditions of this permit shall remain in effect. If FP&L objects to this permit revision it may petition for an administrative hearing in accordance with the enclosed Notice of Rights. Although not required, FP&L may elect to provide publication of appropriate Public Notice of Rights language in a local newspaper. If so, please contact the Departynent for appropriate public notice language.
If a petition is filed, then this permit revision does not become effective. If you have any questions about Wis permit revision, please contact Allen Hubbard of the Industrial Wastewater Section at (850) 245-8592.
Sincerely, Mimi A. Drew Director Division of Water Resource Managerment MAD/wfr/mah cc: Tim Powell, PE. - FDEP West Palm Beach Paul Wierzbicki - FDEP West Palm Beach "More Protection, Less Process"
?ntted Ron recycled paopr
St. Lucie Units 1 and 2 L-2006-102 Dc-cket Nos. 50-335 and 50-389 Attachment Environmental Protection Plan Report Page 2 of 5 Aproved Minor Revision to Industrial Wastewater Facility Permit NOTICE OF RIGHTS A person whose substantial interests are affected by this permit revision may petition for an administrative proceeding (hearing) in accordance with Section 120.57, Florida Statutes. The petition must contain the information set forth below and must be filed (received) in the Office of General Counsel of the Department at 3900 Commonwealth Boulevard, Mail Station 35, Tallahassee, Florida 32399-3000, within 14 days of receipt of this Permit. A petitioner, other than the applicant, shall mail a copy of the petition to the applicant at the address indicated in the attached letter at the time of filing. Failure to file a petition within this time period shall constitute a waiver of any right such person may have to request an administrative determination (hearing) under Section 120.57, Florida Statutes.
The Petition shall contain the following information:
(a) The name, address, and telephone number of each petitioner; the name, address, and telephone number of the petitioner's representative, if any; the Department case identification number and the county in which the subject matter or activity is located; (b) A statement of how and when each petitioner received notice of the Department action; (c) A statement of how each petitioner's substantial interests are affected by the Department action; (d) A statement of all disputed issues of material fact. If there are none, the petition must so indicate; (e) A statement of facts that the petitioner contends warrant reversal or modification of the Department action; (f) A concise statement of the ultimate facts alleged, as well as the rules and statutes which entitle the petitioner to relief; and (g) A statement of the relief sought by the petitioner, stating precisely the action that the petitioner wants the Department to take.
If a petition is filed, the administrative hearing process is designed to formulate agency action.
Accordingly, the Department's final action may be different from the position taken by it in this intent.
Persons whose substantial interests will be affected by any decision of the Department with regard to the application have the right to petition to become a party to the proceeding. The petition must conform to the requirements specified above and be filed (received) within 14 days of receipt of this intent in the Office of General Counsel at the above address of the Department. Failure to petition within the allowed time frame constitutes a waiver of any right such person has to request a hearing under Section 120.57, F.S., and to participate as a party to this proceeding. Any subsequent intervention will only be at the approval of the presiding officer upon motion filed pursuant to Rule 28-5.207, F.A.C.
r St. Lucie Units 1 and 2 Docket Nos. 50-335 and 50-389 Environmental Protection Plan Report Approved Minor Revision to Industrial Wastewater Facility Permit L-2006-102 Attachment Page 3 of 5 Statement of Basis For Minor Permit Revision Permit Number FL0002208 Application Date:
November 30,2005 Additional Information: December 21, 2005; January 18, 2006; February 7, 2006 Application No: FL0002208-004-IWB/MR Name and Address of Applicant:
Florida Power & Light Company 6451 South Ocean Drive Jensen Beach, FL 34957 St. Lucie Plant Hutchinson Island St. Lucie County, Florida The Department received a minor revision application dated November 30,2005 (application complete February 7, 2006) requesting the discharge of dewatering effluent resulting from the dewatering of a 450-foot by 450-foot excavation area adjacent to the on-site cooling canal. The dewatering and excavation are required as part of a proposed project by FP&L to construct an on-site dry storage facility to store some of its spent nuclear fuel. The on-site dry storage facility requires the construction of two concrete pads on which the dry storage containers or casks will rest. This minor revision only covers short-term discharge of ground water resulting from dewatering activities. It does not address or include construction of any plant facilities.
As discussed below, the Permittee has presented data as part of the revision application which provide reasonable'assurances that the internal discharge of ground water into the facility cooling (intake) canal will not result in exceedences of the applicable discharge limitations and water quality standards for existing electric power plants.
Wastewater Discharpes:
A 450-foot by 450-foot area will be excavated to a depth of approximately IS feet and replaced with "engineered" fill. Dewatering of the excavation area will require approximately 30 dewatering wells located around the perimeter of the excavation area at a depth of approximately 40 feet. The maximum initial dewatering flow will be approximately 4,500 gallons per minute (gpm), which after reaching steady state within about tvo weeks will be reduced to approximately 1,500 gpm for the duration of dewatering (approximately 90-120 days). This dewatering effluent will be discharged directly to plant's intake canal. The flow in the intake canal is approximately 1,000,000 gpm with both units operating and approximately 500,000 gpm with one unit operating. The dewatering effluent will combine with the high volume intake water and be routed through the plant's discharge canal to Atlantic Ocean via the combined plant discharge at Outfall D-001.
I.
St. Lucie Units 1 and 2 L-2006-102 Docket Nos. 50-335 and 50-389 Attachment Environmental Protection Plan Report Page 4 of 5
- proved Minor Revision to Industrial Wastewater Facility Permit In addition to the dewatering effluent, there exists an on-site ground water "mixed plume" of petroleum and chlorinated solvents located immediately north of the proposed dewatering area.
Management of the mixed plume has been addressed in a 1999 Consent Order (OGC # 93-2924-56-CU) with the Waste Clean-up Section of the Southeast District DEP. At the present time, the remaining contaminant of concern is vinyl chloride. During the period of dewatering, a Pump and Treat (P&T) approach will be conducted by the facility to ensure that the mixed plume will not be significantly impacted by the dewatering process. From I to 3 mixed plume control wells will be placed on the north side of the dewatering area and pumped at a combined rate of approximately 25 to 200 gpm. The water withdrawn from these wells will be treated using air stripping. The treated water will be then be directed to one of the on-site industrial wastewater treatment ponds and may eventually be discharged to the intake canal via existing Outfall 1-008.
Proiected water guality impacts at Outfall D-001 POD Projected water quality data at Outfall D-001 was evaluated based on mass balance calculations and available dilution in the intake canal assuming worst case flow contributions from the dewatering effluent, P&T mixed plume discharge, and plant intake water. Recent groundwater sampling data taken from the proposed dewatering area was used to characterize the discharge quality of the dewatering effluent and mixed plume discharge. The quality of the intake water was based on other historical monitoring data previously provided to the Department. Except as noted for Beryllium and Gross Alpha below, evaluation and analysis of the data indicate that the combined discharge at Outfall D-001 is expected to meet applicable water quality standards (WQS) for Class m marine waters at the end of the discharge canal (Outfall D-00 1).
It should be noted that discharge limitations for existing steam electric power plants are subject to the requirements contained in 62-660.44(l)(q)3 F.A.C., as follows:
"Dischargesfrom steam electric generating plants existing or licensed by July 1, 1984, shall not be required to be treated to a greater extent than may be necessary to assure:
- 1. That the quality of nonthermal components of discharges from nonrecirculated cooling water systems is as high as the quality of the make-up waters" Beryllium: The maximum unfiltered groundwater sample result was 0.84 ugl. However, the filtered (i.e. dissolved) fraction for ground water samples was below the analytical detection limit of 0.15 ugfl. This indicates that the solids in the samples are the major source of the Beryllium.
It is reasonable that there will be a low concentration of solids in the discharge to the onsite cooling canal. The most recent plant intake value reported by the facility is 0.34 ug/l, which represents the receiving water background. Using this intake value and the dissolved Beryllium value of 0.15 ug/l, the resultant combined discharge at Outfall D-001 would be 0.339 ug/l based on mass balance calculations assuming an intake Beryllium concentration of 0.34 ug/l).
Therefore, the discharge concentration is expected to be no greater than the receiving water background, and provides reasonable assurances that it will meet the discharge requirement for steam electric power plants contained in 62-660.44(l)(q)3 F.A.C.
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St. Lucie Units 1 and 2 L-2006-102 Docket Nos. 50-335 and 50-389 Attachment Environmental Protection Plan Report Page 5 of 5 ApRoroved Minor Revision to Industrial Wastewater Facility Permit Gross Alpha:
Groundwater was analyzed for gross alpha particle activity using two analytical methods: 900.0, and 00-02. Results using 900.0 had a broad range of variability while data from method 00-02 were consistent with one another. Industrial Wastewater Section Staffconsulted with the Department's Bureau of Laboratories who indicated that method 900.0 can be highly variable and unreliable for analyses of high salt content samples such as the onsite ground water and seawater. They indicated that method 00-02 may provide more consistent and reliable data for high-salt content waters.
The maximum groundwater sample result using Method 00-02 was 68 +/- 9 pCi/l, representing the internal discharge within the onsite cooling water canal. Recent intake sampling reported by the facility using this method is 2.5+/-0.4 pCi/l, which represents the receiving water background. The resultant combined discharge at D-001 (using the upper range of these report values) is 3.14 pCi/l based on mass balance calculations, which is below the WQS of 15 pCi/A, and therefore provides reasonable assurance that the discharge will meet the water quality standard.
Additional environmental monitoring by the Florida Department of Health The Florida Department of Health (DO11), Bureau of Radiation Control routinely performs on-site and off-site environmental monitoring of St. Lucie Power Plant as required by the Nuclear Regulatory Commission (NRC) for radiological parameters that may be attributable to radiological release from nuclear power plants. DOH collects surface water and sediment for Gamma isotopic analysis and tritium analysis. Gamma isotopic analysis is the identification and quantification of gamma-emitting radionuclides that may be attributable to the effluents from nuclear power plants.
Chemicals to be used in the P&T System Due to the potential for growth of iron reducing bacteria, water treatment chemicals may be used to prevent the air strippers from scaling and fouling. The chemical that maybe used are Redux 380, a blended scaling control agent, and Redux B-15, aglutraldehyde based water treatment microbiocide. Based on proposed dosage rate, travel time of the discharge, and available dilution, no adverse toxicity impacts are expected at the point of discharge, Outfall D-001.
The Department's Toxicity coordinator was consulted regarding the proposed use these chemicals in the P&T system and dilution calculation were performed. The facility will also evaluate the potential effect of these chemicals in the effluent as part of the toxicity testing already required in the facility's current NPDES discharge permit.
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