L-2006-258, Environmental Protection Plan Report, Request for Minor Revision to Industrial Wastewater Facility Permit

Environmental Protection Plan Report, Request for Minor Revision to Industrial Wastewater Facility Permit

ML063410238
Person / Time
Site:	Saint Lucie
Issue date:	11/27/2006
From:	Johnston G Florida Power & Light Co
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
EPP 3.2.4, L-2006-258
Download: ML063410238 (12)

Text

Florida Power & Light Company, 6501 S. Ocean Drive, Jensen Beach, FL 34957 0L November 27, 2006 FPL L-2006-258 10 CFR 50.36.b EPP 3.2.4 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 Request for Minor Revision to Industrial Wastewater Facility Permit The attached request for a minor revision to the Industrial Wastewater Facility Permit is being submitted pursuant to the requirements of Section 3.2.4 of the St. Lucie Units 1 and 2 Environmental Protection Plans.

Please contact Ken Frehafer at (772) 467-7748 if there are any questions on this matter.

Very truly yours, Gordon L. Johnston Site Vice President St. Lucie Plant GLJ/KWF Attachment Cool an FPL Group company

St. Lucie Units 1 and 2 L-2006-258 Docket Nos. 50-335 and 50-389 Attachment Environmental Protection Plan Report Page 1 of 11 Approved Minor Revision to Industrial Wastewater Facility Permit 0

Florida Power& Light Company, 6351 South Ocean Drive, Jensen Beach FL. 34957 IFPL November 27, 2006 CERTIFIED MAIL RETURN RECEIPT REQUESTED Marc Harris, P.E. 7006 0100 000 9587 0443 Supervisor, Power Plant NPDES Permitting Industrial Wastewater Section Florida Department of Environmental Protection 2600 Blair Stone Road, MS 3545 Tallahassee, Florida 32399-2400 RE: FPL - St. Lucie Plant State IWW Permit No. FL0002208 Request for Minor Revision Due to Minor Modification of Facility

Dear Mr. Harris:

Attached please find the following items to support the request for minor revisions to the Florida Power & Light Company (FPL) St. Lucie Plant State IWW Permit No. FL0002208:

1) Four (4) signed, sealed copies of FDEP Form 62-620.910(9), "Application for a Minor Revision to a Wastewater facility of Activity Permit including Attachment 1 -

Description of Proposed Minor Plant Modification Necessitating Minor Permit revision with Figures and Appendices.

2) An FPL Check (Check No, 1060893) payable to the Florida Department of Environmental protection for the $250 application fee.

If you have any questions or need additional information on this matter, please contact Ron Hix at (561) 691-7641.

Sincerely, Z4ý7 Gordon L. Johnston Site Vice President St. Lucie Plant Enclosure Vpps1036 cc:

USNRC Document Control Desk FDEP - SE District - Tim Powell an FPL Group company

St. Lucie Units 1 and 2 L-2006-258 Docket Nos. 50-335 and 50-389 Attachment Environmental Protection Plan Report Page 2 of 11 Approved Minor Revision to Industrial Wastewater Facility Permit APPLICATION FOR A MINOR REVISION TO A WASTEWATER FACILITY OR ACTIVITY

_______A PERMIT

1. Instructions

a. In accordance with Rule 62-620.325, F.A.C., this form must be submitted to the appropriate Department district office or approved local program when requests for minor revisions to a permit or minor modifications to a facility are made by a permittee, except for transfer of a permitto a new permittee and addition of a major user of reclaimed water to a Part B? reuse systerm. Application for transfer of a permit to anew permittee shall be made onDEP Form 62-620.910(l1). Application for addition ofa major user ofreclaimed water shallbe made on DEP Form 62-610.300(4Xa)l.

b. Each applicable item must be completed in fullin order to avoid delay in processing of this form. Where attached sheets or other technical documentation are provided, indicate appropriate cross-ref.erenc.

c. Three (3) copies of this applicationwith supporting documentation shall be submitted with this form_

d. All information is to be typed or printed in ink. Dates are to be entered in MM/DD/YR format

e. This application and attachments shall be signed in accordance with Rule 62-620.305, F.A.C. Also, as applicable, this application and all attachments shall be signed and sealed by a professional engine registered in Florida in accordance with Rule 62-620.310, F.AC.

2. Facility Information

a. PermitNumber: FL0002208 b. Facilityldentification Number FL0002208

c. Project/Facility Name: FPL - St Luoie Power Plant

d. Contact Name: Ron Hix Number and Streest 700 UniverseBoulevard City/State/Zip Code: Juno Beach, Florida 33408 Telephone (561) 691-7641

3. Type of Revision

[]Correct Typographical Errors' - Submit one copy of each page of the permit showing revisions being requested.

[] Change Improvement Schedule' - Providea description of the improvement, a list of the dates to be revised, and a reason for the proposed change in each date.

[] Change Expiration Date of Permit' -Provide the current and proposed expiration dates for the permit and the reasons for the proposed change.

[EChange Staffing Requirements' - Describe the proposed change and submit justification for the change in accordance with Chapter 62-699, FA.C.

-Apt-.oinw f. a t ,,qWl*d. D1o r- 62=.910(9)

'Ap-n fm,1a WId wiaha. Wpplik-o, Effsir,,, O,,b, 23, 2sa0 i, -,odaw- withWej62.050, F.&C.

St. Lucie Units 1 and 2 L-2006-258 Docket Nos. 50-335 and 50-389 Attachment Environmental Protection Plan Report Page 3 of 11 Approved Minor Revision to Industrial Wastewater Facility Permit E Change Monitoring and Reporting Requirements 2 - Describe the proposed change and submitjustification for the change in accordance with Chapter 62-601, F.A.C.

[] Modify Approved Pretreatment Program' - Describe the proposed modification and provide the information required by Rule 62-625.540, F.A.C.

E] Delete Point Source Outfall' - Identify the outfall and explain why the outfall is being eliminated.

El Modify or Expand Approved Residuals Land Application Sites2 - Attach a new or updated Agricultural Use or Dedicated Site Plan as required by Chapter 62-640, F.A.C.

[ Minor Modification to the Facility' - Provide a description of the proposed modification. If applicable, attach any reports, plans, and specifications which have been developed to implement this modification.

[E Other' -Provide appropriate documentatioa Describe.

4. Certifications

a. Applicant or Authorized Representative I certify under penalty of law that I have personally examined and am familiar with the information submitted in this application and all attachments and that, based on my inquiry of persons immediately responsible for obtaining the information contained in the application, I believe that the information is true, accurate and complete. I am aware that there are significant penalties for submitting false information, including the possibility of and isprisonment.

(Signature of Applicant or Auth d Represen ) (Date)

Name (please type) Gordon ohnsto..- CompanyName FPL Title Vice President, St. Lucie Plant Company Address: 6451 S. Ocean Drive Phone: (772) 467-7100 City/State/Zip Code: Jensen Beach, Florida 34957

b. Professional Engineer Registered in Florida I certify that the engineering features of this project have been (4oaifed) (examined) by me and found to conform to engineering principles applicable to such projects. In my professional judgement, this facility, when properly constructed, operated, and maintained, will comply with all applicable statutes of the State of Florida and rules of the Department.

Name (please type): Ed Preast Florida Registration Number: 33225 Company Name: FPL Company Address: 700 Universe Boulevard City/State/Zip Code: Juno Beach, Florida 33408 PhoneNumber: 561-691-2679 __-o_,_ i[ -

(Seal, Signature, Date, and Registration Number) airtgnd bs th .ahondd *re-d 2, 62-M.910(9 DFPFun-R.lI 62-62M.305. FAXC-

St. Lucie Units 1 and 2 L-2006-258 Docket Nos. 50-335 and 50-389 Attachment Environmental Protection Plan Report Page 4 of 11 Approved Minor Revision to Industrial Wastewater Facility Permit Attachment 1 Description of Proposed Changes to Monitoring and Reporting Requirements and Addendums/Clarification to StateIWW Permit Application General Description of St. Lucie Plant:

The Florida Power and Light Company (FPL) St. Lucie Nuclear Plant is located on Hutchinson Island, between Jensen Beach and Ft. Pierce, Florida. Unit 1 has been in service since 1976, with Unit 2 commencing operation in 1983.

The St. Lucie Plant State IWW Permit No. FL0002208 was most recently renewed on January 20, 2006. Since the renewed permit was received, FPL, via operation under the permit and through the environmental auditing process, has identified three (3) areas in which the permit needs to be revised.

Item 1) Request to Change Monitoring and Reporting Requirements Specific Condition I.A. .::of the St. Lucie Plant IWW permit requires "Discharge Water Temperature" and "Temperature Differences Between Intake and Discharge" (Delta T) to be monitored "Hourly". This information is collected on an hourly basis, manually, and delta T's calculated, from digital read-outs located in the St. Lucie Plant control room by the facility's "Reactor Operators" (ROs). The primary responsibility of the ROs is the operation of the plant's nuclear reactors, a highly demanding job. In order to allow more time for the ROs to conduct their primary job, and to be more in line with (although more frequent than) the requirements for all other FPL facilities that have temperature reporting requirements (i.e.;

"6/day"), FPL is requesting that the monitoring frequency for these parameters be reduced from hourly to "Every 3 Hours" or "8/day". FPL believes this reduction can be made without sacrificing-the quality, of the data currently being reported. This frequency coincides with other data collecting requirements the ROs currently have.

Justification for Change to:Monitoring and reporting requirements:

To justify this change in monitoring and reporting, FPL looked carefully at one year of discharge temperature data that were collected and reported from September, 2005 though August, 2006 (Appendix 1). Here, FPL compared maximum monthly discharge temperatures and Delta T's based on hourly temperature readings, with maximum monthly discharge temperatures and Delta Tl's using water temperatures from the same data set, for every third, fourth, and sixth hour. The data from every third hour (3-hour) correlated most favorably with the hourly data.

For the maximum hourly versus 3-hour maximum temperature, 8 of the 12 (67%) of the monthly maximums were identical. The maximum difference for any single month was 0.20 F.

Since FPL reports whole numbers on the monthly DMRs, none of the values reported during this time frame would have been different (i.e.; 100% the same) had we been using the "3-hour" maximum temperature.

St. Lucie Units 1 and 2 L-2006-258 Docket Nos. 50-335 and 50-389 Attachment Environmental Protection Plan Report Page 5 of 11 Approved Minor Revision to Industrial Wastewater Facility Permit For the maximum hourly versus 3-hour Delta T, 10 of the 12 (83%) of the monthly delta T's were the same. The maximum difference for one month was 0.70 F and the only other month not the same had a difference of 0.20 F. Thus had we been using the "3-hour Delta T" during this time frame and rounding the numbers for the DMRs, only one value reported (July 2006) would have changed by one degree Fahrenheit.

This information, along with the facts that:

1) The nuclear plants are "base-loaded" so any changes in operation (i.e.; start-ups, shutdowns, load changes) occur infrequently. Therefore, significant changes in the thermal output and their resulting changes in discharge temperature due to operational changes from the facility are relatively infrequent.

2) The intake is located at mid-depth and off-shore in the Atlantic Ocean so changes in the intake water temperature, which effects both types of monitoring, are generally gradual; seem to indicate that the 3-hour monitoring will, in most all cases, lead to the same, or very close to the same, maximum reported temperatures and Delta T's as the hourly monitoring currently being conducted.

Item 2 - Addendum to St. Lucie Plant IWW Permit Application During an internal audit conducted recently of the St. Lucie Plant's Environmental Compliance Program, it was discovered that a source of wastewater to the. on-site "Evaporation and Percolation (E/P)Basins" was inadvertently omitted. The omitted source was laboratory waste streams from the facility's on-site "secondary" laboratory. The secondary laboratory onthe site deals with the plant's "secondary" non-radiological systems (i.e.; testing and analyses, both wet chemistry and.on-line samplers, of non-radiological wastes steams) and monitors virtually the same operational processes as those monitored in the laboratories of FPL fossil-fueled plants.. (Note: The "radio-chemistry" labs, which handle radioactive laboratory wastes - from the "'primary" side of the plant- are routed to OSN - I-003 -Liquid Rad Waste System). According.to 40 CFR 423.11 (b),:laboratory waste is a "low volume waste" and can be commingled with the other low volume wastes such as stormwater or'plant wash water that alsol discharge to these E/P basins. The average daily volue of lab waste discharged to the E/P basins (in particular the East Basin), is approximately 5,000 gallons. Please note that most of the 5,000 gallons consists of on-line instrument process water flow, not actual laboratory analytical waste. This volume is minor compared to storm and wash water from floor drains and other low volume waste sources that are discharged to the E/P basins. As noted in the previous application, the E/P basins have a combined minimum operating capacity of approximately 27,000,000 gallons and only occasionally

.discharge to the plant's intake canal via OSN 1-008. Also, because these laboratory waste steams have always discharged to the E/P basins, the wastes have been "accounted for" in the sampling and analyses conducted for Form 2GS (West Pond) and Form 2CS at OSN 1-008 for the most recent State IWW Permit application and subsequent toxicity testing.

St. Lucie Units 1 and 2 L-2006-258 Docket Nos. 50-335 and 50-389 Attachment Environmental Protection Plan Report Page 6 of 11 Approved Minor Revision to Industrial Wastewater Facility Permit Appendix 2 is a revised "Item VA .Attachment" from the previous State IWW Permit Application with the lab wastes included.

Item 3 - Addition of Well Sampling Purge Water to OSN 1-003, Liquid Radwaste System Batch Releases:

Historically, the St. Lucie Plant has had releases Of turbine lube oil, diesel fuel and solvents to the ground on the plant property. The sites of these spills are in various stages of remediation with groundwater monitoring required by the FDEP at each of the contaminated sites. Prior to collecting samples from the groundwater. monitoring wells, the wells must be purged. This purge water is typically collected in 50 gallon drums and disposed of offsite in an approved manner.. More recently, FPL became aware that due: to some other past releases, there is a small concentration of tritium present in some of these monitoring wells.: In order to facilitate accounting for the amount of radioactive material released from the site, FPL believes it is prudent to release this purge water through outfall OSN 1-003, Liquid Radwaste System Batch releases. To accomplish this, the drums of purge, water would be moved into the Reactor Auxiliary Building (RAB) and the purge water added to0the Liquid Radwaste System. This water would then be intermingled. with other wastestreams in a holding tank for batch release and eventually discharged to the plant's discharge canal via OSN 1-003...

Please note that the maximum volume of purge water collected annually from the monitoring well sampling events will be less than 600 gallons.

Appendices 3, 4, and 5 present expected impacts to water quality at the facility's POD (OSN -

D-001) if these wastes were discharged via OSN 1-003.

Appendix 2 is a revised "Item IVA Attachment" from the previous State IWW Permit Application with the groundwater monitoring well sampling purge water included.

FPL respectfully requests that these releases of groundwater monitoring well purge water be approved and included in State IWW Permit FL0002208.

St. Lucie Units 1 and 2 L-2006-258 Docket Nos. 50-335 and 50-389 Attachment Environmental Protection Plan Report Page 7 of 11 Approved Minor Revision to Industrial Wastewater Facility Permit Appendix I FPL - St. Luice Plant Comparison of Recorded Temperatures (OF)

September 2005 - August 2006 Intake Hourly Max 3-Hour Max -Hour Max 4-Hour 6-Hour Max 6-Hour Month,: Temp Disc Temp Temp Temp Difference . Temp Difference Septemiter 85,8 111.0 111.0 111.0 0.0 111.0 0.0 October:: 85.5 110.5 110.5 110.5 0.0 110.5 0.0 November 77.7 :99.8 99.8 99.6 0.2 99.6 0.2 December 74.5 94.4 94.4 94.3 0.11 94.4 0.0, January 73.0 95.4 95.2 95.2 0.2 95.2 0.2 February 7213 95.1 95.1 95.0 0.1 95.1 0.0 March 75.0 96.1 96W1 96.1 0 96.1 0.0 April 76.0 99.6 99.6 99.4 0.2 99.6 0.0 May 80.0 102.1 101.9 101.9 0.2 101.9 0.2 June 84.0 108.8 108.6 108.8 0.0 108.2 0.6 July 84.0 108.7 108.7 108.5 0.2 108.7 0.0 August 83.1 106.4 106.2 106.0 0.4 105.9 0.5 Ave Diff: . . __..___ 0.11____ _ 0.1 Max Diff __: _ .

_____

• 0.4 ________- 0.6

% W.I.s 33%, 68%

Hourly Max 3-Hour Max .-Hour Max 4-Hour 6-Hour. Max 6-Hour Month Delta T Delta T Delta T Difference Delta T Difference Septemiber 26.5 M_ 26.5 26.5 0.0 26.2 0.3 October 26.5 26.5 26.5 0.0 26.5 0.0 November 25.0 25.0 25.0 0.0 25.0 0.0 December . _24.0 .. 24.0 23.0 1.0 :24.0 0.0 January 24.7 24.7 24.7 0.0 24.7 0.0 February 24.3 24.3 24.2 0.1 24.2 0.1 March 23.3 23.3 23.3 0.0 23.0 0.3 April 23.8 23.6 23.4 0.4 23.6 0.2 May 23.0 23.0 22.6 0.4 23.0 0.0 June 26.2 26.2 26.2 0.0 26.2 0 July 26.01 25.3 25.3 0.7 25.3 0.7 August 26.3 26 26.3 .0.0 26.3 0.0 Ave Diff

• _______ 0.2 0.1 Max Diff ______ 1.0 0.7

%05's 58% ___ _ 58%1

St. Lucie Units 1 and 2 L-2006-258 Docket Nos. 50-335 and 50-389 Attachment Environmental Protection Plan Report Page 8 of 11 Approved Minor Revision to Industrial Wastewater Facility Permit ITEM IVA ATTACHMENT FPLT. LCIE.P.L.ANT INDUS:TRIAL WASTEWATER:,PROQCES FLOWDIGA (EstimteO dFlows Based on 2003 Process Dataýand Average Ra all)

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Appendix 3 CD FPL - St. Lucie Plant Turbine Lube Oil Area Clean-up - Groundwater Monitoring Well Purge Water Analyses CD CD 00 Parameter Units Class III Unit 1 Wells I_ Unit 2 Wells Marine Standard MW001 MW002 MWO03 7MW004 MW001 MW002 - MW003 - 0 Arsenic (total) ug/ <50 66 . 74. < 4.8 0.016 13 < 9.2 5.7 0 1-Methylnaphtalene uj/I No Critera < 0.074 < 0.077 0.86 < 0.076 0.29 < 0.076 < 0.075 51 2-Methylnaphtalene u No Criteria < 0.055 < 0.057 < 0.51 < 0.075 0.29  :< 0.056 < 0.056 Acenaphtene u/ A No Criteria 0.096 0.09 .0.51 < 0.091 < 0.091 < 0.12 < 0.091 Naphthalene ugA No Criteria < 0.125 < 0.125 0.54 < 0.074 < 0.073 < 0.12 < 0.073 0

Fluoranthene ug/l No Criteria 0.07 < 0.055 0.055 < 0.056 < 0.056 < 0.056 < 0.056 Phenanthrene ugA No Criteria 0.0626 < 0.094 02 < 0.092 < 0.092 < 0.093 < 0.092 Pyrene ug/ No Criteria 0.0626 < 0.094 < 0.091 < 0.092 0.092 < 0.093 < 0.092 TRPH (FL PRO) mg/I 1 5 2.7 0.26 < 0.41 0.67 0.67 0.72 0.170 Yellow Shading Denotes Highest Value Observed for Each Parameter Summary of Calculated Discharge Concentrations After Mixing In Discharge Canal Prior to Discharge to Waters of the US Parameter Units Intake* Discharge Flow Drum Flow* Total Flow Calculated Discharge Background (GPM) (GPM) (GPM) Concentration Arsenic (total) ug/ < 23.0 472,917 50 472,967 23.01 CD 1-Methylnaphtalene ug/I Not Analyzed** 472,917 50 472,967 --

2-Methylnaphtalene ug/I Not Analyzed- 472,917 50 472,967 --

Acenaphtene ug/ < 1.0 472,917 50 472,967 1.00 (D

Naphthalene ugA < 1.0 472,917 50 472,967 1.00 Fluoranthene ug/ 1.0 472,917 50 472,967 1.00 Phenanthrene u/j < 1.0 472,917 50 472,967 1.00 Pyrene 1.0 472,917 50 472,967 1.00 Oil and Grease mg/I 1.7 472,917 50 472,967 1.70 Intake background values from 2004 State IWW Permit Application Not one of 126 Priority Pollutants required for NPDES Application - not anticipated to be present in ocean water Maximum of drums per year - 8 (400 gallons)

Assumptions for Calculations: One Unit Operating - Discharge Canal Flow - 472,917 GPM Drum Emptied In 1 Minute - 50 GPM Concentrations from Wells are Maximum Concentrations Observed In One year of Sampling If observed value is "lessthan" (<) MDL - The MDL value Is used in the calculation Calculation assumes no mixing with other waste streams from OSN 1-005

- " " " 0 0

a- 00

Appendix 4.

FPL - St. Lucle Plant CD Benzene Parameter Units u

Diesel Fuel Area Clean-up -. Groundwater Monitoring Well Purge Water Analyses Class III

.. Marine STD.

71.28 <

MW-3

- 1. <

MW-11i 1

Wells Not MW23 Sampled <

MW-26 1

0 Toluene ug/ No Criteria < .1 < 1 ..... Not Sampled < 1 Ethylbenzene ui/ No Criteria < 1 < .. 1 Not Sampled < 1 Total Xylenes ug/I No Criteria < .0.98 < 1 Not Sampled < 1 MTBE u2,h No Criteria < 1 < 1 . Not Sampled < 1 Naphthalene ug/l No Criteria < 10 10 Not Sampled < 10 0 1-Methyl-naphthalene uA/I No*Criteria < , 10 10.: Not Sampled < 10 2-Methyl-naphthalene *ug/ No Criteria < 10 10 Not Sampled < 10 0 Acenaphthalene Lup/ No Criteria < :10 < 10 Not Sampled < 10 Fluoranthene ugA.

• No Criteria < 10 :10 . Not Sampled < 10 Phenanthrene ugA No Criteria < 10 < 10 Not Sampled < 10 Anthracene up/I No Criteria < 10 10 Not Sampled < 10 0

Benzo(a) Anthracene ugA No Criteria < 10 10 Not Sampled: < 10 Benzo(a) Pyrene u - No Criteria < 10 10 Not Sampled < .10 Indeno (1,2,3-cd) Pyrene Uo/I No Criteria < 10 10 Not Sampled < 10 Yellow Shading Denotes Highest Value Observed fro Each Parameter Summary of Calculatn Discharge Concentration After Mixing In Dharge Canal Prior to Dischare to Waters of the US Intake 1 Discharge Flow Drum Flow*- Total Flow - Calculated Dlschargo Parameter Units Background* - (GPM) (GPM) (GPM) Concentration Benzene ugA/I < 1 472,917 50 472,967 1.00 Toluene ug/A:. < 72917 .50 472,967 1.00 Ethylbenzene ug/i 1 472,917 50 472,967 1.00 Total Xylenes ug/I Not Analyzed** 472917. 50_ 472,967 -

MTBE uqiI - Not Analyzed  : 472,917 50 472,967 Naphthalene _ up/I < 1 472,917

• 50 472,967 1.00 1-Methyl-naphthalene ugA/I Not Analyzed 472,917 50 472,967 2-Methyl-naphthalene ug/I Not Analyzed 472,917 50 472,967 Acenaphthalene uq/i < 1 472,917 50 472,967 . 1.00 Fluoranthene ug/I < 1 472,917 50 472,967 1.00 Phenanthrene up/I < 1 .. 472,917 50 - 7 1.00 Anthracene ug/l .< 1 472,917 50 472,967 1.00 Benzo(a) Anthracene ug/i < 0.2 47217 50 472,967 " 0.20 Benzo(a) Prene ug/I < 0.2  :..:472,917 50 _ .472,967 0.20 Indeno (1,2,3-cd) Pyrene :. u J/,<1 0.2 J,: 1: 472,917T 50 472,967 0.20 Intake Background Values from 2004 *State IWW Permit Application Not one of 126 Priority Pollutants required for NPDES Application - Not Anticipated to Be Present in Ocean Water

-*MaximumNumber of Drums per Year - 2 (100 gallons)

Assumptions for Calculations: One Unit Operating - Discharge Canal Flow - 472,917 GPM - Drum Emptied in 1 Minute -.50 GPM Concentrations from Wells are Maximum Concentrations Observed in One year of Sampling CD If observed value is less than" (<) MDL The MDL value is used in the calculation. 0 Calculation assumes no mixing with other Waste streams from OSN 1-005

1,

'~1 Appendix 5 C FPL - St. Lucie Plant

.Mixed Plume Area Clean-up - Groundwater Monitoring Well Purge Water Analyses 0 class Ill Wells________ 0

~1 00 Parameter. Units Marine STD. MW-3 MW-7A MW-i . MW-12 CIS -1,2-Dichloroethene Trans-1 2-Dichloroethene

'ugI.:

ug/l -

No Criteria No Criteria :

Not Analyzed Not Analyzed 26 1.6

• :Not Analyzed Not Analyzed 11 3.2 Cs 0 zý.

Vinyl:Chloride uA/I No Criteria Not Analyzed 2.9 Not AnlyzIed 13 11,-Dichloroethane ug/. No Criteria Not Analyzed 1.6 Not Analyzed < 5 PCJ Benzene .-. .,. ug/  : 71.28 < 27 5 <... 0.27 < 5 0 MTBE * " ug/ No Criteria 22 5 < 0.88 . 5 Tetrachioroethene ug/ :. < *8.85 .. Not Analyzed < 5: . . Not Analyzed  : 5 CD Yellow Shading Represents Maximum Values from 4 Wells over a3 Year Period (2004-06) -t Summary. of Calculated Discharge Concentrations After Mixing in Discharge Canal Prior:to Discharge to Waters of US

____:_________Intake Discharge .Flow Drum FIow*** TotalFl0ow Calculated Discharge Cs

__..... .. ___: " 'Units Background* (GPM): (GPM) Concentration cGPM)

CIS -112-Dichloroethene <,ug/I Not Analized**  : 472ý* , 50 472,967 Trans-1,2-Dlchloroethene ug/l < ... 1 . 472,917 . 50 . 472,967.::- 1.00 Cs Vinyl Chloride . ug 472,9117- 50 472,967: 1.00 1,1-Dichloroethane ug < 1: - 472,917 50 " 472,967 1.00: 0 Benzene uq/i < :1 4721917 50 - 472,967 1.00 MTBE . .I uA II Not Analyzed: 1 472,917  : 50 4721967 :  : .. .... .=:_

Tetrachloroethene ug/t < 1 - 472,917 50  :: 472,967,:: 1.00 Cs Intake Background Values from 2004 State IWW Application

" Not One of 126 PriorIty Pollutants Required for NPDES Application -: Not Anticipated to be Present in Ocean Water Maximum Number of Drums per year -2(100 gallons)

Assumptions for Calculations: One Unit Operating - Discharge Canal Row -472,917 GPM Drum:Emptied ln:l Minute - 50 GPM Concentrations from Wells are Maximum Concentrations Observed In One year of Sampling if observed value is "less than" (<) MDL - The MDL value Is used in the calculation Calculation assumes no mixing with other waste streams from OSN 1-005 0 C0 00 i.I 00