ML12157A184

Attachment 11 to GNRO-2012/00039 - Entergy Nuclear Grand Gulf Nuclear Station License Renewal Environmental Audit - Hydrology Patton - Attachment Q Labeled Thermal Monitoring Reports for Winter and Summer 2007.

ML12157A184
Person / Time
Site:	Grand Gulf
Issue date:	05/23/2012
From:	Entergy Operations
To:	Office of Nuclear Reactor Regulation
References
GNRO-2012/00039
Download: ML12157A184 (6)

Text

Attachment 11 to GNRO-2012/00039 Attachment 11 to GNRO-2012/00039 Entergy Nuclear Grand Gulf Nuclear Station License Renewal Environmental Audit-Hydrology Patton -Attachment Q labeled"Thermal Monitoring Reports for Winter and Summer 2007" Attachment Q Thermal Monitoring Reports for Winter and Summer 2007 r7,/A\1 rlA\l r I 10 IN Q, ýOJIQý ORAC F\\ Q A 77A C MH RqA R H 7 1ýo-")IJ HonBgut l1w] Mppwh Vootr Wludý,sir n d R, P AT F 1.-wf I THERMAL MONITORING PROGRAM Part III, D, Item 3, Page 32 of 33, of the GGNS NPDES Permit requires measurements of Mississippi River receiving water temperatures, during periods of power generation when specified conditions occur. In addition, the permit standard conditions require monitoring during the winter of 2006/2007 and during the summer of 2007 with the results included with the application for permit re-issuance.Because implementing conditions did not otherwise occur, the measurements were performed once during the winter of 2006/2007 and once during the summer of 2007, as prescribed by the GGNS NPDES Permit. The Thermal Monitoring Data Sheets documenting these exercises are attached.

Please note in both instances there was no significant thermal influence on receiving waters.For your convenience a summary of the results is shown in the table below.UPSTREAM UPSTREAM DOWNSTREAM DOWNSTREAM SURFACE [CO] SUBMERGED[C-]

SURFACE[CO]

SUBMERGED[Cj is f5 [5 feet)Winter[November

-April] 13.0 13.0 13.0 13.0 Summer[May -October] 26.8 26.7 26.6 26.8 axAND GULF NUJCLEAR STATION ENVIRONMENTAL IN8TRUcrroN 08-8-09-4 Revision:

11 Attaciment III Page 6 of 6 TXMIU UMUTORM UURT VEZUL AMI311Q LT 5133 I. Date Performed I1. Upriver Temperature (Point 1)III. Discharge Outlet Temperature (Note I)IV. Barge Slip Outlet Temperature(Note 2)Surface 5 ft Surface 5 ft Surface 5 ft iiH 8/c 4, 13.60 C 13,0 9c 1'7.',V cc 11 c/Y. ý 6C V. Downriver Temperature (Point 7) Surface IC.O C (Receiving Water)5 tt (3,0 *c V1. Ambient Air Temperature le 4C VII. River Level at Vicksburg 2k &7 ft VIII. Outfall 001 Recorder Temperature ,C S MOTH: A. Any temperature measurement in RECEIVING WATER which is equal to or greater than UPRIVER TE]PERATUBRE

+2.80C must be reported to the Chemistry Superintendent.

B. Any temperature measurement in RECEIVING HATER which exceeds 32.2 0 C must be reported to the Chamistry Superintendent.

Prepared by ________________

&L___' 01gnature-tats Reviewed bySignature/Date (Note 1) If the S ft. sample is impractical, note location of measurement and N/A the 5 ft blank. (See Page 1, III. b)(Note 2) If subsurface measurement depth is leas than 5 ft. note the approximate depth on the data sheet (See Page 1, II. c)J: \ADMSRVS\TBCI PUN\RRVISION\8\13094 .DOC GamnD GULF NUCLZAR STATION MWJERONVUNTAL INSTRUCTION 08-8-03-4

.Revisioni 11 Attachment III Page 6 of 6-MUM G -DAM 8RAT I. Date Performed 1I. Upriver Temperature (Point 1)II. Discharge Outlet Temperature(Note 1)IV. Barge 81lp Outlet Temperature (Note 2)V. Downriver Temperature (Point 7)(Receiving Water)Surface 5 ft Surface 5 ft Surface 5 ft Surface 5 ft*C n.:t 9c 1q, -Ito ft Vt. Ambient Air Temperature VIZ. River Level at Vicksburg VZ11. Outfall 00C Recorder Temperature 3Um Ime OWTE h ýW.w 4&L6coAE -9iI NOT~r A. Any temperature measurement in RECEIVINM WATER which is equal to or greater than UFRIVMR TEMPERATURJ

+2.3 C muest be reported to the Chemistry Superintendent.

B. Any temperature measurement in RMMXVING WATER Which 32.2eC must be reported to the Chemistry Superintendent.

Prepared by #gaueot 4/J0 V Signature/Date (Note 1) If the 3 ft. sample is impractical, note location of measurement and N/A the 5 ft blank. (See Page 1, III. b)(Note 2) If subsurface measurement depth is less than 5 ft. note the approximate depth on the data sheet (See Page 1, IIl. c)J: \ADt4_SRVS\TUCH PUU\RNVISION\B\85094 .DOC