CY-98-093, NPDES Noncompliance Notification:On 980202 & 0413,two Sixty Day Oil Spill Repts Submitted to Epa,Describing Sheens, Observed at Water Intake Structure.Tank Considered to Be Permanently out-of-service
| ML20249B767 | |
| Person / Time | |
|---|---|
| Site: | Haddam Neck File:Connecticut Yankee Atomic Power Co icon.png |
| Issue date: | 06/11/1998 |
| From: | Mellor R CONNECTICUT YANKEE ATOMIC POWER CO. |
| To: | Tordoff D ENVIRONMENTAL PROTECTION AGENCY |
| Shared Package | |
| ML20249B768 | List: |
| References | |
| CY-98-093, CY-98-93, NUDOCS 9806240177 | |
| Download: ML20249B767 (9) | |
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ONNECTICUT YANKEE AT O MIC POWER COMPANY HADDAM NECK PLANT 362 INJUN HOLLOW ROAD e EAST HAMFrrON, CT 06424-3090 June 11,1998 CY-98-093 l 1
Mr. David Tordoff, On-Scene Coordinator U. S. Environmental Protection Agency - Region 1 J. F. Kennedy Federal Building Boston, MA 02203-02211 Mailcode 11BR
Subject:
Sixty (60) Day Oil Spill Report per 40 CFR 112.4(a)
Dear Mr. Tordoff:
On February 2,1998 and on April 13,1998, two sixty (60) day oil spill reports were submitted to the Environmental Protection Agency (EPA) describing sheens that were observed at the water -
intake structure and in the discharge canal of Connecticut Yankee Atomic Power Company's (CYAPCO) 11addam Neck Plant during 1997 and 1998. The plant is located on the Connecticut River in lladdam, Connecticut.
Since the April 13,1998 report, two more sheens were observed at the intake structure , one on April 13th and the second on May 7,1998. In addition to these sheens, a foam like material was observed in the discharge canal on April 13th and on numerous occasions since that date. Since two or more incidents have occurred within a twelve month period at this facility, a new report to the U. S. Environmental Protection Agency (EPA) Regional Administrator is required within 60 days of the most recent incidents pursuant to 40 CFR 112.4.
In accordance with 40 CFR 112.4(a), the following information is hereby submitted:
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- 1. Name and Loestion of Facility:
Connecticut Yankee Atomic Power Company - 11addam Neck Plant (CYAPCO) , ., h 362 Injun llollow Road 'y' l Iladdam, Connecticut 9006240177 980611 PDH ADOCK 05000213 8 PDR 1026-3 MV t-91 m . _ . . . _ _ _ _ _ _ . _ _ _
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, .I Mr. David Tordoff CY-98-093/Page 2 June 11,1998
- 2. Name and Mailing Address of the Owner and Operator of the Facility:
Connecticut Yankee Atomic Power Company - Haddam Neck Plant 362 Injun Hollow Road East Hampton, CT 06424-3099 Attn: Russell A.Mellor Vice President - Operations and Decommissioning
- 3. Location of the Facility:
l The station is located in Haddam Neck Connecticut on the east bank of the Connecticut River, latitude 41 -28'-13"N, longitude 72 -28'-54"W(see Attachment A).
- 4. Date and Year ofluitial Facility Operation:
The station was first placed in operation in 1968 and was shutdown for decommissioning in 1996.
- 5. Maximum Storage Capacity of the Facility:
1-10,000 gallon turbine lubricating oil reservoir (empty) 2-12,500 gallon lubrics ting oil tanks 1-2,000 gallon waste oil storage tank 2-500 gallon diesel oil day tanks 2-5,000 gallon diesel oil storage tanks 2-275 gallon diesel oil tanks 1-275 gallon maintenance diesel oil tank 3-500 gallon heating oil tanks 2-1,000 gallon diesel oil tanks 1-6,000 gallon gasoline tank 14,000 gallon heating oil tank 1-20,000 gallon fuel oil storage tank 1-1.000 gallon heating oil tank Total 83,325 gallons of various petroleum products.
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- Mr. David Tordoff CY 98-093/Page 3
. June 11,1998 l
! A 42,000 gallon fuel oil tank which has been emptied, cleaned, and the fill line has been blank flanged, is also present on-site. This tank is considered to be permanently out-of-service.
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- 6. Description of the Facility:
CYAPCO contains one steam electric generating unit that was powered by nuclear fuel. The fuel he been removed and the plant is now inactive. Current operations include significantly reduced water usage and reduced equipment maintenance activities. For the next five to seven years, the plant will be in the process of decommissioning. The overall plan includes reducing the size of the plant while maintaining safe storage of spent nuclear fuel. This will allow for the removal of radioactivity and the elimination of most of the existing structures and operations. The plant intake structure and the associated equipment will not be needed for operations associated with the decommissioned facility once the plant is fully decommissioned.
- 7. A Complete Copy of the SPCC Plan with any amendments:
Enclosed is a copy of the current CYAPCO Spill Prevention Control and Countermeasure Plan, effective 2-19-97, as modified 7-22-97 by Temporary Procedure Change (TPC)97-201 (see Attachment B). CYAPCO is in the process of revising its SPCC and Hazardous Waste Contingency Plan into one document for the entire site. This integrated plan, once completed, will replace the current SPCC Plan.
- 8. The Causes of the Spills, Including a Failure Analysis of the System or Subsystem in which the Failure Occurred:
On April 13,1998 and May 7,1998, two separate sheens of approximately one cup of an oil-like substance were observed by plant personnel at CYAPCO's intake structure. On April 13,1998, a foam-like material was also obserwd at CYAPCO's discharge canal. These incidents were reported to the Environmental Protection Agency (EPA) and the United States Coast Guard (USCG) by calling the National Response Center, and the State of Connecticut Department of Environmer.tal Protection (CTDEP) (collectively referred to as the " Agencies") verbally and in writing.
Through previous discussions with the Agencies, CYAPCO has verbally informed the Agencies that these sheens were recurring in nature and that sheens of similar volume (approximately 1 cup) continue to appear. Since the sheens were very small, possibly from the same source, and since efforts were being actively undertaken to identify the source of the sheens, the Agencies
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Mr. David Tordoff t CY-98 093/Page 4
. June 11,1998 -
concurred that the sheens do not have to be reported each time they appear. Efforts by plant personnel to identify the source of the sheens and to prevent their recurrence consisted of twwwning off the intake structure so as to prevent oil or similar materials originating from oil barges passing by, oil storage facilities located upriver, or recreational boating traffic from entering the intake structure and the discharge canal.
It was originally believed that plant equipment or operations located at the intake structure were the source of the recurring oil sheen. After repeated inspc<:tions and analysis of this equipment, CYAPCO has still not been able to confirm the source of the. sheens. However, since closing off the intake structure to potential outside oil sources, the sheens are appearing much less frequently.
A sample of the sheen was collected from the intake structure and a sample of the foam-like material was collected from the discharge canal on April 14,1998. These samples were analyzed for petroleum hydrocarbons. In addition, a sample of the foam-like material was collected and examined for biological characteristics. No petroleum hydrocarbons were detected at the intake structure or the discharge canal. The biological characterization appears to indicate that the foam-like material is of natural biological origin. The analytical reports are enclosed as Attachment C.
- 9. Corrective Actions and/or Countermeasures Taken, including a Description of Equipment Repairs and/or Replacement:
Immediate corrective actions implemented to date include calling in a vendor spill response unit on April 14 and 15,1998 to change out the existing sorbent booms at the intake structure and the -
discharge canal. Sorbent booms were already deployed at the intake structure and discharge canal above the weir as a result of the spill response activities that occurred in February 1998 and March 1998. In addition, a 100 foot length of I8 inch containment boom was added as a second stage barrier at the intake structure as an additional protective measure for oil collection and containment purposes. Finally, sorbent booms were added at the two previously unprotected intake screens located at the intake structure, thereby preventing oil from entering the intake structure through these openings. This booming activity completely closed the intake structure to outside sources of oil.
On May 21,1998, a length of sorbent boom was added to the intake structure once again. This was necessary because the boom on the north end of the structure was allowing water to overtop
' it at the shoreline due to the very low water levels at low tide (the boom was observed to be 4 I
sitting in the muddy river bottom at low tide, allowing water to pass over it). The May 7,1998 sheen may have been the result of oil floating in through this new found opening in the protective
' boom at the intake structure. Since this May 21,1998 boom installation, sheens have not been observed at the intake structure or in the discharge canal.
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Mr. David Tordoff CY-98-093/Page 5 June 11,1998 CYAPCO is continuing its efforts to monitor the intake structure and the discharge canal in an effort to identify the cause of the sheens and is prepared to implement the corrective action measures necessary to prevent their recurrence, if the source is determined to be from CYAPCO l
equipment or operations.
- 10. Additional Preventive Measures Taken or Contemplated to Minimize the Possibility ofRecurrence:
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Based on the small quantities of the oil-like substances involved, it has been difficult to determine the source of the oil sheens. In addition, recent efforts have been undertaken to install sorbent boom around the intake structure to ensure that oil does not enter the intake areas from outside sources, such as oil barges, leaks and spills from nearby oil terminals, and /or recreational boating activities. With these changes, the 100 foot length of 18 inch containment boom located at CYAPCO's intake structure is no longer necessary.
CYAPCO plans to continue using sorbent booms, as necessary, as a protective measure to prevent the sheens from reappearing. CYAPCO will continue to periodically monitor.the intake structure and discharge canal for oil sheens. If oil sheens continue to appear at our intake structure or our discharge canal, further investigation into the source of the oil will be conducted.
Should you have any questions, please call Ms. Patricia J. Zabrocki, Environmental Coordinator, at (860) 267-3183.
Very truly yours, CONNECTICUT YANKEE ATOMIC POWER COMPANY
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Russek Mellor }
Vice President - Operations and Decommissioning ec: NRC, Document Control Desk Mr. William J. Raymond, NRC, Senior Resident inspector Mr. Michael McCann, CTDEP, Oil and Chemical Spill Response j Ms. Michele DiNioa, CTDEP, Water Management Bureau USCG, Marine Safety Office (MSO), New Haven, CT ;
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