ML20198P070

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NPDES Monthly Discharge Monitoring Rept for Sept 1997
ML20198P070
Person / Time
Site: Haddam Neck File:Connecticut Yankee Atomic Power Co icon.png
Issue date: 09/30/1997
From:
CONNECTICUT YANKEE ATOMIC POWER CO.
To:
Shared Package
ML20198P059 List:
References
NUDOCS 9711060264
Download: ML20198P070 (19)
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,' , DMR Processing D11567/SES 97-Gh-i61/ Enclosure, Page 1 ,

October 27,1997 Enclosure

[ Haddam Neck Plant L

Connecticut Yankee Atomic Powcr Comnany Results and Discussions NPDES Monthly Report - September 1997 L Introduction This report fulfills the morboring requirements for the Haddam Neck Plant (Connecticut Yankee), NPDES Permit No. CT0003123, dated September 30,1992. DMR's are submitted as soon as compiled, but not later than the last day of the month following the report period as stated in the permit.

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Results and Discussions Results of the continuous, weekly and monthly monitoring programs are summarized on the DMR sheets aned All sampling and analysis except hydrazine, ethanolamine and boron were conducted h 0.co.hnce with EPA approved procedures set forth in EPA Publication 600/4-79-020. For these three chemical substat.:es, CYAPCO submitted its own procedures to the Connecticut Department of Environmental Protection ("DEP" or " Department") for approval

(, on October 4,1996.

' The computerized data logging report of the continuous monitoring program is included in Table 1. This repon is included because it provides data for the daily range of pH, temperature, and flow, which re required under the NPDES permit. The DMR form does not have provisions for daily ranges.

DSN 001. Discharce Canal In-line pH Meter Failure On September 4,1997, at approximately 8:35 a.m., the discharge canal (DSN 001-1) in-line pH meter experienced a malfunction. The DEP was notified and hourly grab samples were immediately initiated. At no time was the permit pH limit for DSN 001-1 exceeded. The pH pro'be was replaced and the system was declared back in service at approximately 4:00 p.m. that same day. Results of the grab samples which were taken are included in Tabl8 3. A five day notification letter was sent to the Department on September 8,1997 (D11505).

9711060264 971027 PDR ADOCK 05000213 R pgg

- DMR Processing -

- D11567/SES 97-ON 161/ Enclosure, Page 2 October 27,1997 DSN 001-A. B. E. and J oH Samnle Locations Pursuant to Section 22a-430-3(j)(9)(c) of the Regulations of Connecticut State _ Agencies (RCSA), CYAPCO informed the Department on September 12,1997 and September 29,1997  ;

that t > reporting of pH results at DSN 001-A (Test Tanks),001-B (Steam Generators),001-E '

_ (Floor Drains, etc.) and 001-J (Auxiliary Boiler Blowdown) may require revision. In the past, while sampling for all parameters was performed ,at the discharges themselves, additional ,

sampling for pH was performed at downstream locations after mixing with other_ water, such as '

cooling _ water, It is our view at this time, subject to confirmation, that sampling at these Swnstream locations was reported in the DMRs. It does not appear that pH sampling performed at the discharges themselves was reported in tim monthly DMR.

During the month of September, no discharges occurred from any of the above listed locations and, as discussed with the Department, no discharges will be released unless the pH is within the permitted range prior to mixing with any other waste streams. A report on this matter was provided in writing to the Department on October 10,1997 (D11531) and was further discussed at a meeting with the Department on October 15,1997.

Use ofNalcolvte As part of CYAPCO's review of the above matter, and as discussed with the Department, it was discovered that "Nalcolyte" flocculant has been used to assist in removing water impurities prior -

to discharging waste water via DSN 001-A. The Test Tanks are part of the waste liquid processing system and discharge to the service water system. A review is underway to determine whether the Department was notified of this substance. As part of the review, CYAPCO is reviewing whether Nalcolyte, when used, is present in the discharge, and whether continued use of Nalcolyte is necessary. Nalcolyte has not been used since August 29,1997

. Bulab 8007 Iniection On September 5,1997, CYAPCO personnel noted a. discoloration inside the weir, before wastewater enters either the discharge canal or the Connecticut River. No discoloration of the-discharge canal or the Connecticut River was observed. Chemical injection of Bulab 8007 into the service water commenced two hours prior to the appearance of this discoloration. As a result, CYAPCO's use of Bulab 8007, which is used to control microbiological corrosion of the service

water system and is authorized pursuant to a permit modification issued to CYAPCO by the Department on April 21,1995, is under review. The vendor of Bulab 8007 is not awwe of any reports of discoloration caused by its use. An analysis performed by the vendor of the sample

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DMR Processing -

D1Id67/SES 97-GN-161/ Enclosure, Page 3 -

October 27,1997 taken from the weir indicates that the discoloration was the result of microbiological growth being dislodged from the service water system. Pending further resiew, use of Bulab 8007 has been suspended. Following completion of the review, CYAPCO will notify the Department of

. the results and any recommended ( hange in its use. A report c3 +1 :e matter was provided to the

- Department on October 10,- 1997 and was further discussed at a meedng with the Department on October 15,1997.

Also discussed at the meeting on October 15,1997, was the sampling method used to take the monthly " daily composite" sample when Bulab 8007 is used. While CYAPCO's practice is to collect a 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> daily composite, a minor permit modification request (D10877) was submitted in March of this year seeking clarification of this practice, since Bulab is injected into the sersice water system at a maximum of four hours per day.

As'the use of Bulab 8007 was halted very early in the month, prior to the scheduled monthly

' monitoring, nc monthly sample was obtained. The DMR is, therefore, marked "Not Sampled" for this parameter.

. DSN 001-J. Oil and Grease The permit requires quarterly sampling for oil and grease at DSN 001-3 (Auxiliary Boiler Blowdown). However, the boilers have not been run since August 26,1997.1Due to this extended boiler shutdown, CYAPCO personnel were unable .to perform the required monitoring.

- As a result, this month's DMR is marked.."Not Sampled" for this parameter. All other parameters for this ' discharge were previously sampled and reported this quarter and are therefore marked "No Discharge" for this month.

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STATE OF CONNECTICUT " DEPARTMENT OF ENVIRONMENTAL PROTECTION Bureau of Water Management - Discharge Monitoring Report (DMR)

DATE RECEIVED (STAMPED)

Permit: CT0003123 MAJ Dist: 12 Town:061 Loc-008 Facilit/ CT. YANKEE ATOMIC POWER PLANT

Contact:

Paul Brindamour Town: HADDAM NECK Phone: (860) 267-3510 Logged Delivered: OK'd:

KEY: CT0003123 issue: 093092 Expire: 09/3G/97 Sample Month September 1997 Average Flow- 600000000 GPD ND = none detected Discharg 0011 Mon Loc: 1 NON-CONTACT COOLING WATER Sample Weeks:

Code Start s/m Typ Unit Parameter Min. Ave. Max. Freq 1 2 3 4 5 00310 100192 0/0 CP MG/L BOD 5 DAY (20 DEG C) -

02/99 Code 9

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00335 100192 0/0 CP MG/L CHEMICAL OXYGEN DEMAND -

02/99 Code 9

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01042 100192 0/0 CP MG/L COPPER, TOTAL (AS CU) -

02/YR Last sampled 8-97

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50050 100192 0/0 i MGD FLOW, IN CONDUIT OR THRU 6 16 24/01 SEE AT ACHEDTABLE1 81313 100192 0/0 CP MG/L HYDRAZINE -

02/99 Code 9

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G1051 100192 0/0 CP MG/L LEAD. TOTAL (AS PB) -

02/YR Last sampled 8-97

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01067 100192 0/0 CP MG/L NICKEL TOTAL (AS NI) -

02/YR Last sampled 8-97

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00610 100192 0/0 CP MG/L NITROGEN, AMMONIATOTAL -

02/YR Last sampled 8-97 l 1

00556 100192 0/0 CP MG/L OIL & GREASE, FPEON EX -

02/YR Last sampled 8-97 34044 100192 0/0 G MG/L OXIDANTS, TOTAL RESIDUAL - -

0.05 01/07 0.05 Notei Note 1 C0400 10CI92 0/0 l SU PH 6.6 9.0 24/01 SEE ATTACHED TABLE 1 l Note 2 Note 2 )

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70300 100192 0/0 CP MG/L SOL!uS, TOTAL DISSOLVED - 02/YR Last sampled 8-97 I

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COMMENTS: Code 9 = conditional monitoring Semi-annual TSS last sampled 8-97 Note 1 = No chlorination of cire water Note 2 = High pH due to algae bloom.

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STATE OF CONNECTICUT " DEPARTMENT OF ENVIRONMENTAL PROTECTION Bureau of Water Managemerd - Discharge Monitoring Report (DMR) ,

' KEY: CT0003123 issue: 093092 Expire: 09/30/97 Sample Month SeWmber 1997 Average Flovc 600000000 GPD ND = none detected Discharg 0011 Mon Loc- 1 NON-CONTACT COOLING WATER Sample Weeks:

Code Start s/m Typ Unit Parameter Min. Ave. Max. Freq 1 2 3 4 5 00530 100192 0/0 G MG!L SOLIDS. TOTAL SUSPENDED 5.8 8.2 01/07 4.0 6.4 4.4 8.2

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38260 100192 0/0 CP MG/L SURFACTANTS(MBAS) -

02/YR Last sampled 8-97 00018 100192 0/0 i DEG TEMP DIFF BETWEEN SAMP 0.0 0.0 2.8 01/01 SEE ATTACHFO TABLE 1 00011 100192 0/0 i DEG TEMPERATURE DEG FAHR 65.3 72.1 79.5 24/01 SEE ATTACHED TABLE 1 00015 100192 0/0 CA MBTU THERMAL D:SCHARGE MILL 0.1 8.5 01/30 SEE ATTACHED TABLE 1 01092 100192 0/0 CP MGM. ZINC, TOTAL (AS ZN) -

02/YR Last sampled 8-97 1

COMMENTS:

KEY: CT0003123 lssue: 093092 Expire: 09/30/97 Sample Month September 1997 Average Flovc 600000000 GPD ND = none detected Discharg 0011 Mon Loc- 7 NON-CONTACT COOLING WATER Sample Weeks:

Code Start s/m Typ Unit Parameter Min. Ave. Max. Freq 1 2 3 4 5 50050 100192 , 0/0 i MGD FLOW, IN CONDUIT OR THRU 6 16 24/01 SEE ATTACHED TABLE 1 00011 100f92 0/0 1 DEG TEMPERATURE, DEG FAHR 79.0 24/01 SEE ATTACHED TABLE 1 COMMENTS:

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STATE OF CONNECTICUT ** DEPARTMENT OF ENVIRONMENTAL PROTECTION Bureau of Water Management - Discharge Monitoring Report (DMR)

IEY: CT0003123 issue:093092 Expir. 09/30/97 Sample Month September 1997 Ave. age Flom 600000000 GPD ND = none detected Discharg 0011 Mon Loc: G NON-CONTACT COOLING WATER Sample Weeks:

Code Start s/m Typ Unit Parameter Min. Ave. Max. Freq 1 2 3 4 5

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01042 100192 0/0 CP MG/L COPPER TOTAL (AS CU) - 02/YR Last sampled 8-97

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01051 100192 0/0 CP MG/L LEAD, TOTAL (AS PB) -

02/YR Last sampled 8-97 01067 100192 0/0 CP MG/L NICKEL,TC~AL(AS NI) ***** - - 02/YR Last sampled 8-97 ,

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00610 100192 0/0 CP MG/L NITROGEN, AMMONIATOTAL ***** - 02/YR Last sampied 8-97

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00556 100192 0/0 CP MG/L O'L & GREASE. TOTAL REC -

02/YR Last sampled 8-97 70300 100192 0/0 CP MG/L SOLIDS, TOTAL DISSOLVED -

02/YR Last sampled 8-97 00530 100192 0/0 CP MG/L SOLIDS, TOTAL SUSPENDED -

02/YR Last sampled 8-97 o

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38260 100192 0/0 CP MG/L SURFACTANTS,(MBAS) -

02/YR Last sampled 8-97 01092 100192 0/0 CP MG/L ZINC, TOTAL (AS ZN) -

02/YR Last sampled 8-97 KEY: CT0003123 issue: 093092 Expire: 09/30/97 Sample Month September 1997 Average Flom 60000000 GPD ND = none detected Discharg 0011 Mon Loc-T NON-CONTACT COOLING WATER Sample Weeks:

Code Start s/m Typ Unit Parameter Min. Ave. Max. Freq 1 2 3 4 5 TGABC 100fb2 0/0 CP P/F P/F STAT 96 HR ACU PIMEPH -

02/YR Last sampled 8-97*

TGA3D 100192 0/0 CP P/F PiF STAT 48 HR ACU D. PULEX -

02/YR Last sampled 8-97

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TGC3D 100192 0/0 CP P/F P/F STAT CHR DAPHNIA P. - 02/YR Last sampled 8-97 TGC6C 100192 0/0 CP P/F P/F STAT CHR PIMEPHALES -

02/YR Last sampled 8-97 Page 3

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STATE OF CONNECTICUT " DEPARTMENT OF ENVIRONMENTAL PROTECTION Bureau of Water Management - Discharge Monitoring Report (DMR)

- KEY: CT0003123 issue: 093092 Expire: 09/30/97 Sample Month September 1997

  1. Average Flow:16000 GPD ND = none detected Discharg 001 A Mon Loc 1 STEAM ELECT 9fC POWER PLANT Sample Weeks:

Code Start s/m Typ Unit Parameter Min. Ave. Max. Freq 1 2 3 4 5 01022 100192 0/0 G MG/L BORON, TOTAL (AS B) - 02/30 NF NF NF NF NF l 00164 100192 0/0 i GPB FLOW, GALLONS / BATCH - - 01/DS NF NF NF NF NF 01062 100192 0/0 G MG/L MOLYBDENUM, TOTAL (AS MO - - -

02/30 NF NF NF NF NF 71850 100192 0/0 G MG/L NITROGEN, NITRATE TOTAL - 02/30 NF NF NF NF NF 00615 100192 0/0 G MG/L NITROGEN. NITRITE TOTAL -

02/30 NF NF NF NF NF 00556 100192 0/0 G MG/L OIL & GREASE, FREON EXTR - - -

02/30 NF NF NF NF NF j l

34044 100192 0/C G MG/L OXIDANTS, TOTAL RESIDUAL -

0.15 01/07 0.15 0.13 0.07 0.05 0.04 Service Water Weekly maximums, see Table 2 00400 100192 0/0 i SU PH -

- - 02/30 NF NF NF NF NF 00530 100192 0/0 G MG/L SOLIDS, TOTAL SUSPENDED - 02/30 NF NF NF NF NF  :

1 COMMENTS:

KEY: CT0003123 issue: 093092 Expire: 09/30/97 Sample Month September 1997 Average Flow- 120000 GPD ND = none detected Discharg 001 B Mon Loc- 1 BLOW DOWN FROM HEAT / COOL Sample Weeks:

Code Start , s/m Typ Unit Parameter Min. Ave. Max. Freq 1 2 3 4 5 00310 100192 0/0 CP MG/L BOD 5 DAY (20 DEG C) Code 9 02/99 00335 100192 0/0 CP MG/L CHEMICAL OXYGEN DEMAND Code 9 02/99 00940 100192 0/0 CP MG/L CHLORIDE (AS CL) NF 02/99 No Discharge COMMENTS: Code 9 = Corditional monitoring Page 4

STATE OF CONNECTICUT

  • DEPARTMENT OF ENVIRONMENTAL PROTECTION Bureau of Water Management - Discharge Monitoring Report (DMR)

KEY: CT0003123 Issue: 093092 Expire: 09/30/97 Sample Month September 1997 e Average Flow- 120000 GPD ND = none detected Discharg 001 B Mon Loc 1 BLOW DOWN FROM HEAT / COOL Sample Weeks:

Code Start s/m Typ Unit Parameter Min. Ave. Max. Freq 1 2 3 4 5 01042 100192 0/0 CP MG/L COPPER, TOTAL (AS CU) NF 01/30 No discharge 00056 100192 0/0 T GPD FLOW RATE, AVERAGE DAILY NF NF 24/01 No discharge 81313 100192 0/0 CP MG/L HYDRAZINE NF 02/99 No discharge 01045 100192 0/0 CP MG/L IRON, TOTAL (AS FE) NF 01/30 No discharge 00556 100192 0/0 G MG/L OIL & GREASE FREON EXTR. NF NF 01/30 No discharge 00400 100192 0/0 G SU PH NF -

NF 01/30 No discharge 00665 100192 0/0 CP MG/L PHOSPHORUS, TOTAL (AS P) NF 01/90 No discharge 00530 100192 0/0 CP MG/L SOLIDS, TOTAL SUSPENDED NF 01/30 No discharge 00945 100192 0/0 CP MG/L SULFATE TOTAL (AS SO4) N: 02/99 No discharge 100192 0/0 CP MG/L ETA - -

NF 01/07 No additions made COMMENTS: Code 9 = Conditional Monitoring. Sampling only required when discharging wet lay up.

KEY: CT0003123 issue: 093092 Expire: 09/30/97 Sample Month September 1997

, Average Flovc 22000 GPD ND = none detected Discharg 001 E Mon Loc: 1 WATER PRODUCTION WASTEWTR .

Samp'e Weeks:

Code Start s/m Typ Unit Parameter Min. Ave. Max. Freq 1 2 3 4 5 01042 100192 0/0 CP MG/L COPPER, TOTAL (AS CU) - 01/30 No Discharge C0051 42195 0/1 CP MG/L DIMETHYL AMIDE - -

01/30 Not sampled, see coverietter Sampled at R-18 Page 5 j

STATE OF CONNECTICUT " DEPARTMENT OF ENVIRONMENTAL PROTECTION Bureau of Water Management - Discharge Monitoring Report (DMR)

KEY: CT0003123 issue: 093092 Expire: 09/30/97 Sample Month September 1997 p Average Flovr.22000 GPD ND = none detected Discharg 001 E Mon Loc 1 WATER PRODUCTION WASTEWTR Sample Weeks:

Code Start s/m Typ Unit Parameter Min. Ave. Max. Freq 1 2 3 4 5 00056 100192 0/0 T GPD FLOW RATE AVERAGE DAILY - - -

01/30 No Discharge 01045 100192 0/0 CP MG/L IRON, TOTAL (AS FE) - -

01/30 No Discharge 00556 100192 0/0 G MG/L OIL & GREASE FREON EXTR - -

01/30 No Discharge 00400 100192 0/0 i SU PH -

01/30 No Descharge 00665 100192 0/0 CP MG/L PHOSPHORUS, TOTAL (AS P) -

01/30 No DischarDe i 00530 100192 0/0 G MG/L SOLIDS TOTAL SUSPENDED - -

01/30 No Discharge KEY: CT0003123 issue:093092 Expire: 09/30/97 Sample Month September 1997 Average Flow- 28000 GPD ND = none detected Discharg 001 F Mon Loc- 1 NON-CONTACT COOLING WATER Sample Weeks:

Code Start s/m Typ Unit Parameter Min. Ave. Max. Freq 1 2 3 4 5 C0051 42195 0/1 CP MG/L DIMETHYL AMIDE - - 01/30 Not sampled, see coverietter Sampled at R-18 00056 100192 0/0 i GPD FLOW RATE, AVERAGE DAILY - -

01/30 No Discharge 00556 100192 0/0 G MG/L OIL t. GREASE FREON EXTR - -

01/30 No Discharge 00400 1001.92 0/0 G SU PH -

01/30 No Discharge ,

00530 100192 0/0 G MG/L SOUDS.TOTALSUSPENDED - -

01/30 No Descharge

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00011 100192 0/0 G DEG TEMPERATURE DEG FAHR -

01/30 No Discharge COMMENTS: .

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STATE OF CONNECTICUT ** DEPARTMENT OF ENVIRONMENTAL PROTECTION Bureau of Water Management - Descharge Monitoring Report (DMR)

. KEY: CT0003123 Issue: 093092 Expire: 09/30/97 Sample Month September 1997 p Average Flow- INTERMITT GPD NO = none deteded Discharg 001 G Mon Loc- 1 WATER PRODUCTION WASTEWTR Sample Weeks:

Code Start s/m Typ Unit Parameter Min. Ave. Max. Freq 1 2 3 4 5 00556 100192 0/0 G MG/L OIL & GREASE FREON EXTR - -

02/YR Last sampled 4-97 39516 100192 0/0 G MG/L PCBS-POLYCHLORINATED - -

02/YR Last sampled 4-97 00400 100192 0/0 G SU PH -

02/YR Last sampled 4-97 KEY: CT0003123 issue: 093092 Expire: 09/30/97 Sample Month September 1997 Average Flow- INTERMITT GPD ND = none detected Discharg 001 H Mon Loc 1 WATER PRODUCTION WASTEWTR Sample Weeks:

Code Start s/m Typ Unit Parameter Min. Ave. Max. Freq 2 3 4 5 00556 100192 0/0 G MG/L OIL & GREASE FREON EXTR - - 02/YR Last sampled 4-97 39516 100192 0/0 G MG/L PCBS-POLYCHLORINATED - -

02/YR Last sampled 6-97 00400 100192 0/0 G SU PH -

02/YR Last sampled 4-97 KEY: CT0003123 issue: 093092 Expire: 09/30/97 Sample Month September 1997 Average Flow- 22400 GPD ND = none detected Discharg 001 i Mon Loc 1 SAN SEWAGE 20,000 - 99,000 Sample Weeks:

Code Start s/m Typ Unit Parameter Min. Ave. Max. Freq 1 2 3 4 5 01097 100192 0/0 CP MG/L ANTIMONY. TOTAL (AS SB) NF 02/YR No Flow -

01002 100192 0/0 CP MG/L ARSENIC, TOTAL (AS AS) NF 02/YR No Flow 00998 100192 0/0 CP MG/L BERYLLIUM, TOTAL (AS BE) NF 02/YR No Flow COMMENTS:

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STATE OF CONNECTICUT " DEPARTMENT OF ENVIRONMENTAL PROTECTION

- Bureau of Water Management - Discharge Monitoring Report (DMR)

. KEY: CT0003123 issue: 093092 Expire: 09/30/97 Sample Month Sectember 1997 p Average Flout 22400 GPD ND = none deteded Discharg 001 i Mon Loc 1 SAN SEWAGE 20,000 - 99,000 Sample Weeks:

Code Start s/m Typ Unit Parameter Min. Ave. Max. Freq 1 2 3 4 5 00310 100192 0/0 G MG/L BOD 5 DAY (20 DEG C) NF NF 04/30 No Flow 01027 100192 0/0 CP MG/L CADMlUM, TOTAL (AS CD) NF 02/YR No Flow 01032 100192 0/0 G MG/L CHROMlUM, HEXAVALENT NF 02/YR No Flow 01034 100192 0/0 CP MG/L CHROMfUM, TOT L(AS CR) NF 02/YR No Flow 01042 100192 0/0 CP MG/L COPPER, TOTAL (AS CU) NF 02/YR No Flow 00722 100192 0/0 G MG/L CYANIDE, FREE (AMEN. TO NF 02/YR No Flow 00720 100192 0/U G MG/L CYANIDE TOTAL (AS CN) NF 02/YR No Flow 00056 100192 C10 T GPD FLOW RATE, AVERAGE DAILY NF NF 01/01 No Flow 01051 100192 0/0 CP MG/L LEAD. TOTAL (AS PB) NF 02/YR No Flow 71900 100192 0/0 CP MG/L MERCUHY, TOTAL (AS HG) NF 02/YR No Flow 01067 100192 0/0 CP MG/L NICKEL, TOTAL (AS NI) NF 02/YR No Flow 00300 100192 0/0 G MG/L OXYGEN. DISSOLVED (DO) NF 05/07 No Flow 00400 100197. .. 0/0 G SU PH NF *""

NF 05/07 No Flow 46000 100192 0/0 CP MG/L PHENOLS NF 02/YR No Flow 01147 100192 0/0 CP MG/L SELENIUM, TOTAL (AS SE) NF 02/YR No Flow 01077 100192 0/0 CP MG/L SILVER TOTAL (AS AG) NF 02/YR i@ Flow 00545 100192 0/0 G MG/L SCLIDS, SETTLEABLE NF NF 05'07 No Flow Page 8

STATE OF CONNECTICUT " DEPARTMENT OF ENVIRONMENTAL PROTECTION Bureau of Water Management - Discharge Monitoring Report (DMR)

KEY: CT0003123 issue:093092 Expire: 09/30/97 Sample Month September 1997 s Average Fkw 22400 GPD ND = none detected Discharg 001 i Mon Loc- 1 SA'* CEWAGE 20,000 - 99,000 Sample Weeks:

Code Start s/m Typ Unit Parameter Min. Ave. Max. Freq 1 2 3 4 5 00530 100192 0/0 G MG/L SOLIDS, TOTAL SUSPENDED ""*

NF NF 04/30 No Flow 00011 100192 0/0 G DEG TEMPERATURE, DEG FAHR ""* -

NF 05/07 No Flow 01059 100192 0/0 CP MG/L THALLIUM, TOTAL (AS TL) NF 02/YR No Flow 00070 100192 0/0 G NTU TURBIDITY NF 05/07 No Flow 01092 100192 0/0 CP MG/L ZINC, TOTAL (AS ZN) NF 02/YR No Flow COMMENTS:

KEY: CT0003123 issue: 093092 Expire: 09/30/97 Sample Month September 1997 Average Fkw 22400 GPD ND = none detected Discharg 001 i Mon Loc G SAN SEWAGE 20,000 - 99,000 Sample Weeks:

Code Start s/m _Typ Unit Parameter Min. Ave. Max. Freq 1 2 3 4 5 00310 100192 0/0 G MG/L BOD 5 DAY (20 DEG F) NF 04/30 No Flow 00400 100192 0/0 G SU PH NF -

NF 04/30 No Flow 00545 10092 0/0 G MG/L SOLIDS,SETTLEABLE NF 05/07 No Flow MG/L SOLIDS,TOTALSUSPENDED - *""

00530 10092 0/0 G NF 04/30 No Flow .

COMMENTS:

Page 9

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CTATE OF CONNECTICUT " DEPARTMENT OF ENVIRONMENTAL PROTECTION Bureau of Water Management - Discharge Monitoring Report (DMR)

KEY: CT0003123 issue: 093092 Expire: 09/30!97 Sample Month September 1997

  1. Average Flow- 22400 GPD ND = none detected Discharg 001 i Mon Loc- K SAN SEWAGE 20,000 - 99,000 Sample Weeks:

Code Start s/m Typ Unit Parameter Min. Ave. Max. Freq 1 2 3 4 5 81010 100192 0/0 CA  % BOD,5-DAY PERCENT REMOV NF - -

01/30 No Flow 81011 100192 0/0 CA  % SOLIDS, SUSPENDED PERCEN NF - -

01/30 No Flow COMMENTS:

KEY: CT0003123 issue: 093092 Expire: 09/30/97 Sample Month September 1997 Average Flow: 10000 GPD ND = none deteded Discharg 001 J Mon Loc- 1 BLOW DOWN FROM HEAT / COOL Sample Weeks:

Code Start s/m Typ Unit Parameter Min. Ave. Max. Freq 1 2 3 4 5 00056 100192 0/0 T GPD FLOW RATE, AVERAGE DAILY -

02/99 No Discharge 81313 100192 0/0 G MG/L HYDRAZINE - 01/90 No Descharge 00610 100192 0/0 G MG/L NITROGEN, AMMONIA TOTAL -

01/90 No Discharge 00556 100192 0/0 G MG/L OIL & GREASE FREON EXTR - - 01/90 Not sampled, see coverictier 00400 100192 0/0 i SU PH -

01/90 No Discharge 00530 100192 0/0 G MG/L SOLIDS, TOTAL SUSPENDED - - 01/90 No Discharge COMMENTS: .

Page 10

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STATE OF CONNECTICUT " DEPARTMENT OF ENVIRONMENTAL PROTECTION Bureau of Water Management - Discharge Monitoring Report (DMR) 9

PERMIT
CT0003123 DIST:12 TOWN: 061 LOC: 008 FACILITY: CT. YANKEE ATOMIC POWER PLANT MAILING NAME: CT. YANKEE ATOMIC POWER CO.

ADDRESS: INJUN HOLLOW ROAD ADDRESS: P.O. BOX 270

}

CITY, STATE, ZIP: HADDAM NECK, CT CITY, STATE, ZIP: HARTFORD CT 06141 f

CONTACT: MR. PAUL BRINDAMOUR CONTACT: MR. PAUL BRINDAMOUR PHONE: 860-267-3510 PHONE- 860-267-3510 if there are any changes or corrections with your facility information, please cross out incorrect information and replace with correct information.

THIS DMR CONSISTS OF 11 PAGES FOR THE REPORTING PERIOD September 1997 STATEMENT OF ACKNOWLEDGEMENT I certify under penalty of law that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel property gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the information, the information submitted is, to the best of my know-ledge and belief, true, accurate and complete. I am aware that there are significant penalties for submitting false information, including the possi-bility'of fine and imprisonment for knowing violations.

Authorized Official: RusseII A. Mellor

Title:

Director- Site Operations and Decommissioning 9

Signature: t d \- Date: /0-30 -D

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TABLE 1.-Pcgs'3 October 2,1997 7:40 AM INTAKE TEMPERAT8 GeS (DEGREE 3 F) FOR - September 1, 1997 -- TO september 30, 1997 DATA ACQUISITION INTERVAL = EVERY FIFTEEN MINUTE 80FFER MAX MIN AVG Conn Yenkee Tower ALL UNITS 66.1 Devon

= 79.0 - 73.5 j ALL UNITS 78.5 + 65,4 70,8 Middletown ALL UNITS ' 76.2 59,9 70.6 Montville ALL UNITS 82.7 69.1 73.8 Milletone Tower UNIT 1 70.1 63.5 66.3 Millstone Tower UNIT 2 Millstone Tower . UNIT 3

- Norwelk Harbor UNIT 1 - 75.8 63.4 68.8 West Springfield ALL UNITS 73.8 63.4 69.4 9

4 I

Page 1

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  • *
  • TABLE 2 September 1HT ,

Additional TRO Analysis for DSN 001 A. In ma/L hk i hk 2 Nk 3 Wess 4 hk 5 0.15 0.08 0.04 0.04 0.04 0.08 0.13 0.07 0.05 0.04 0.10 0.05 0.04 0.04 0.02-0.08 0.05 0.04 0.05- 0.03 0.08 0.07 0.05 0.04 0.06 0.05 0.04 0.04 0.03 0.05- 0.05 0.04 0.04 0.04 0.04 0.04 ---

I

_____-_---.__-d

t

Table 3 September 1997 .

Connecticut Yankee. Discharae DH Grab Readinos DSN 001-1 Datt .Ilan 911 9/4/97 0900 7.30 9/4/97 1015 7.36 9/4/97 1110 7.76 9/4/97 1200 7.85 9/4/97 1305 7.87 9/4/97 1410 7.67-9/4/97 1502 7.69 ,

9/4/97 1605 7.56 9/6/97 1000 7.41 9/6/97 1100 7.83 9/6/97 1205 7.94 95/97 1305 7.84 1

k i

=

3

.

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