AEP-NRC-2016-71, Notification of Increased Chloride Concentration at Monitoring Well

Notification of Increased Chloride Concentration at Monitoring Well

ML16256A109
Person / Time
Site:	Cook
Issue date:	09/07/2016
From:	Scarpello M Indiana Michigan Power Co
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
AEP-NRC-2016-71
Download: ML16256A109 (5)

Text

INDIANA Indiana Michigan Power MICHIGAN Cook Nuclear Plant POWER One Cook Place Bridgman, Ml 49106 A unit ofAmerican Electric Power lndianaMichiganPower.com September 7, 2016 AEP-NRC-2016-71 10 CFR 50.4 Docket Nos.: 50-315 50-316 U. S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, D.C. 20555-0001 Donald C. Cook Nuclear Plant Units 1 and 2 NOTIFICATION OF INCREASED CHLORIDE CONCENTRATION AT MONITORING WELL

References:

1. Letter from J. H. Harner, Indiana Michigan Power Company, to J. Sanders, Michigan Department of Environmental Quality, "American Electric Power Company, Donald C.

Cook Nuclear Plant, Groundwater Permit No. GW1810102," dated August 15, 2016.

By Reference 1, Indiana Michigan Power Company, the licensee for Donald C. Cook Nuclear Plant (CNP) Units 1 and 2, submitted to Michigan Department of Environmental Quality a notification of increased chloride concentration at Monitoring Well 19, for Groundwater Permit GW1810102.

On August 8, 2016, CNP noted that the chloride concentration at Monitoring Well 19 was 501 mg/I, which exceeds the limits of 500 mg/I, set forth in part 324.3109e(1)(b) of the Natural Resources and Environmental Protection Act 451 of 1994. The cause of increased chloride levels is a result of storm water runoff from the previous winter's road and sidewalk deicing activities.

The identified increase in chloride concentration is not a permit exceedance but does require response activities in accordance with Part 11 (f) of CNP's groundwater permit. Response activities require any downgradient drinking wells to be sampled and treated. In this instance, CNP does not have any downgradient drinking wells due to the fact that the.groundwater discharges from our property to Lake Michigan.

Reference 1 is provided, as an enclosure to this letter, in accordance with CNP's Environmental Protection Plan, Section 5.4.2., "Routine Reports." Other monitoring wells are within permit limits from this sampling period. No further actions are required. *

• U. S. Nuclear Regulatory Commission AEP-NRC-2016-71 Page2 This letter contains no new or revised commitments. Should you have any questions please contact Jon H. Harner, Environmental Manager, at (269) 465-5901, extension 2102.

Sincerely,

\.\-JL. ~ ~ ff\. s~r(4tlo Michael K. Scarpello Regulatory Affairs Manager

Enclosure:

Letter from J. H. Harner, Indiana Michigan Power Company, to J. Sanders, Michigan Department of Environmental Quality, "American Electric Power Company, Donald C.

Cook Nuclear Plant, Groundwater Permit No. GW1810102," dated August 15, 2016.

KMH/mll c: R. J. Ancona - MPSC AW. Dietrich, NRC Washington D.C.

NRC Resident Inspector, w/o enclosure C. D. Pederson - NRC Region Ill A.J. Williamson -AEP Ft. Wayne

ENCLOSURE TO AEP-NRC-2016-71 Letter from J. H. Harner, Indiana Michigan Power Company, to J. Sanders, Michigan Department of Environmental Quality, "American Electric Power Company, Donald C. Cook Nuclear Plant, Groundwater Permit No. GW1810102," dated August 15, 2016.

~m!iena Miu:!ii!'jali ~ower Cook Nllclear Plant One Cool< Place Bridgman, Ml 49106 A unit ofAmerican Electric Power lndianaMichiganPower.com Mr. Jerad Sanders, District Supervisor Michigan Department of Environmental Quality Surface Water Quality Division 7953 Adobe Road Kalamazoo, MI 49009 August. 15, 2016 Re: American Electric Power Company Donald C. Cook Nuclear Plant Groundwater Permit No. GW1810102

Dear Mr. Sanders:

This notification is made pursuant to Cook Nuclear Plant's Groundwater Permit GW 1810102, Part I.11.f), Compliance Requirements.

On August B, 2016 we noted that the chloride concentration at monitoring we11 19 was 501 mg/l, which exceeds the limit of 500 mg/l as set forth in Part 324.. 3109e (1) (b) of the Natural Resources and Environmental Protection Act 451 of i994.

While not a permit exceedance, we are following the compliance schedule detailed in Part 11 (f) of our groundwater permit.

Well.19 is located approximately 1200 feet North of the plant's rapid infiltration basin. Upgradient wells and other monitoring wells are within permit limits from this sampling period. A similar issue occurred in August of 2014 with this wel1.

We determined that the eJ.evated chloride levels were the result of stormwater

. -runoff from the previous winter's road and sidewalk deicing program. A review of groundwater outfall data shows chloride levels that are well below what we have detected in the groundwater.

We have reviewed the requirements to ensure compliance with the permit. In Parts I.11.g) (1), (2) and (3) response activities require any downgradient drinking wells to be sampled and treated. In this case, there are no downgradient drinking wells due to the fact that the groundwater discharges from our property to Lake Michigan so no response other than this notification is required.

The most recent chloride data from Well 19 was 459 mg/l on August 5, 2016.

Please contact me at telephone (269) 465-5901 ext. 2102 if you have any questions regarding this information.

Sincerely, 1_/)

DK\ Rcc1e--- ~ur J.l("ZlC~

Jon H. Harner per '.2D)IP- '.72.1 Environmental Manager Donald C. Cook Nuclear Plant c: Ms*. Christine Bauer, MDEQ Kalamazoo USNRC per Appendix B. T.S.

I I!*

Mr. Jerad Sanders Moni tori_ng well notification Page 2 August 15, 2016 I certify under penalty of law that I have personally examined and am familiar with the information submitted on this and all attached documents,  :-

and based on my inquiry of those individuals immediately responsible for obtaining the information, I believe the submitted information is true, accurate and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment.

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~.)arner Environmental Manager