ML20043C608

Comments on Revised Emergency Procedure EP-18.W Lynick Inspected Retention Pond Berm on 900501 & Concluded That Seepage Through Dam &/Or Along Foundation/Embarkment Contact Likely Whenever Pond Levels Rise Above Normal

ML20043C608
Person / Time
Site:	05000054
Issue date:	05/18/1990
From:	Zobel S NEW YORK, STATE OF
To:	Mcgovern J CINTICHEM, INC.
References
NUDOCS 9006050383
Download: ML20043C608 (2)

Text

__ . . _ _ _ _ _ .

~

eh fo-@/

. New York State Department of Environmental Conservation 50 Wolf Road, Albany, New Wrk 12233 May 18, 1990 Thomas C. Jorling Commissioner Mr. James McGovern cintichem, Inc.

P.O. Box B16

• Tuxedo, New York 10987 l

Dear Mr,

McGovern:

Your revised emergency procedure, EP-18, for heavy rain alerts has been reviewed by the Department. The following comments are offered:

The Department's letter of May 17, 1990, suggested a modification to EP-18 wherein the retention pond would be kept at a depth of 20" or less'. Your original procedure stated the pond would be kept at 20". The revised EP-18, received May 18, 1990, has eliminated this statement. Additionally, in step 5., which initiates the S-7 diversion, the retention pond maximum depth has l been changed from 35" to 45" without any explanation.

Mr. W. Lynick, Buread of Dam Safety, inspected the retention i pond berm on May 1, 1990, and concluded that:

Seepage through the dam and/or along the foundation / embankment contact is likely whenever pond levels rise above normal.

The constructed embankment when suojected to high pond i

levels may exhibit slope instability and/or piping of the earthfill. .Either of these two conditions could lead to failure of the dam.

l Before this emergency procedure can be put into effect, please explain:

1. Why a 45" pond depth was selected for initiating the S-7 diversion.

2. At what depth will the retention pond normally be kept?

3. The telefaxed copy of pictures of the diversion structure was not clear enough to easily discern the structure's details. Please provide a detailed sketch of the structure or better copies of the photographs.

9006050383 900518 FDR ADOCK 050000'.4 1 i P PDC f

\

]/ >o

IL , 't

.-_,.'6 If you have any questions, please contact me at:

NYS Department of Environmental Conservation Bureau of Radiation, Room 510 I 50 Wolf Road Albany,_NY 12233-7255 or (518) 457-2225.

Sincerely  !

l L  !

1  !

L  !

Steven Z il Environmental Radiation Specialist i

i cc: J. McGrath, USNRC l R. Bores, USNRC i

i i

1 2

G