ML20064B966

Comments on to Inform That the Appropriate Observation Well Records Are Checked to Ensure Water Level Has Returned to Near Original Level When Sump Pumps Are Purged.Wells & Pumps Are in Hydraulic Contact W/Aquifier

ML20064B966
Person / Time
Site:	Bailly
Issue date:	09/29/1978
From:	Bohn R NORTHERN INDIANA PUBLIC SERVICE CO.
To:	Ballard R Office of Nuclear Reactor Regulation
References
NUDOCS 7810130139
Download: ML20064B966 (1)

Text

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Nuclear Staff R.R. 3, Box 501 Chesterton, IN 46304 September 29, 1978 S0-3W7 Mr. Ronald Ballard Environmental Pr Tjects Branch No. 1 Directorate of Licensing U. S. Nuclear Regulatory Commission Washington, D. C. 20545 RE: NORTHERN INDIANA PUBLIC SERVICE COMPANY BAILLY GENERATING STATION NUCLEAR 1 DOCKET NO. 50-367

Dear Mr. Ballard:

Our July 20, 1978 letter to you describes the methods used to determine if the sump pumps and observation wells are in hydraulic contact with the aquifer (see response to Clarification No. 2) .

The purpose of this letter is to inform you that the appropriate observation well records are checked to ensure that the water level has returned to near its original level whenever the sump pumps are purged. Similarly, when falling head tests are perfomed, the level in the observation well is observed until it returns to near its original level. This is evidence that the observation wells and sump pumps are in hydraulic contact with the aquifer.

Sin ce rely,

/- ,'

e R. J. Bohn Manager, Nuclear Staff RJB:vit L.PbR 7 8'/ o / 3 ol 39 E PDL AD M W ~ 3 V 7 'I 7Er* M 9

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