ML20064J406

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Analysis of Joseph M Farley Nuclear Plant'S Contribution to Increases in Temp of Chattahoochee River
ML20064J406
Person / Time
Site: Farley Southern Nuclear icon.png
Issue date: 03/01/1979
From:
ALABAMA POWER CO.
To:
Shared Package
ML19261B804 List:
References
NUDOCS 7903060284
Download: ML20064J406 (21)


Text

..

ANALYSIS OF THE JOSEPH M. FARLEY NUCLEAR PLANT'S CONTRIBUTION TO INCREASES IN THE TEMPERATURE OF THE CHATTAHOOCHEE RIVER UNIT NUMBER ONE REPORT _

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SUMMARY

The Joseph M. Farley Environmental Technical Specifications

(_ (ETS), Section 3.1.l(a)-2, require a thermal study of the Chattahoochee River in the vicinity of the Farley Nuclear Plant. A standard "T" test a

was performed upon the data for the various sample points. Based upon this statistical analysis, the Farley Nuclear Plant does not contribute to increases in the temperature of the Chattahoochee River.

INTRODUCTION The Joseph M. Farley Environmental Technical Specifications (ETS), Section 3.1.l(a)-2, require a thermal study to be conducted to assess any significant adverse impact on the aquatic biota of the Chattahoochee River by thermal discharges. The assessment of any impact on the aquatic biota by the Joseph M. Farley Nuclear Plant will be addressed in a separate report entitled Environmental Non-Radiological Monitoring of Aquatic Communities in the Chattahoochee River. The oojective of this report is to determine if tne plant contrioutes to a rise in the river's temperature.

For comparison purposes, pre-operational data were obtained for 1976. The -

post-operational phase began with commercial operation of Unit One and lasted for a ~ period of one year. Unit One began commercial operation on December 1,1977. Because of difficulties associated with thermograph operations, data for the post-operational period began on December 13, 1977.

Figure 3.1.1 of the ETS specified certain locations in which the thermographs were to be located. Figure 3.1-1 is reproduced as the

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Figure in this report. The names which were used in this report for the sample points are given in the Figure. To help ensure valid data, two -~

thermographs were installed at the upstream and downstream locations. The data were averaged at a sample point when both thermographs were operational.

The data for the pre-operational and post-operational phase are given in Appendices I and II, respectively.

' Regrettably, the data for the discharge proved to be unacceptable.

The river level changed drastically from day to day. This changing level caused the instrument to be out of the water a significant portion of the time. The problem is now being studied and hopefully acceptable data will be available for the two unit report. Initial studies indicated that the __

five foot depth requirement for the thermograph could not be followed and still ensure valid data. Therefore, in the future this depth will be increased to the level necessary to ensure valid data. Additonally, vandalism has caused the loss of approximately 25% of the post-operational data.

DATA ANALYSIS To assist in the analysis of the data, a statistical comparison of the thermograph data at the Upstream, Intake, and Downstream Sample Points was performed for both the pre-operational and post-operational periods.

Standard "T" tests on the sample means were performed to test the thpothesis that there was no difference in the means of the sample points, i

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It can be inferred .that if this hypothesis is true, then the sample points would experience the same thermal regime. The analysis was

(. . performed upon the means of the temperatures at the various sample points.

The means include data which were available at both sample points for the same time interval. If there were no data available at one sample point, no calculation was made for that specific time interval. This

. was necessary to ensure that the seasonal and climatic effects are equal at all sample points within a single year.

For comparisons between pre-operational and post-operational

. data, the same -type analysis as the above was conducted but identical climatic conditions cannot be ensured. The comparison of pre-operational and post-operational data would be meaningless unless the sample points were identical.

The results of the statistical comparisons are presented in the Table.

TABLE Difference in Means Statistically Significant Mean Temperature at 90% Confidence Level 0

Pre-op Upstream 63.66 F No -._

Pre-op Downstream 65.12 1

Post-op Upstream 68.93 No Post-op Downstream 70.08 Post-op Upstream 66.80 Significant at 96.7%

Post-op Intake 69.16 Confidence Level Post-op Downstream 68.25 No Post-op Intake 68.97 _

Pre-op Upstream 65.21 No Post-op Upstream 66.26 Pre-op Downstream 69.02 No Post-op Downstream 69.85 From the above, it may be seen that there is only one case where the temperature difference is statistically significant (post-operational intake and post-operational upstream). Since no difference is observed comparing post-operational upstream to downstream or post 0 operationaldownstreamtointake,andsincethedifferencgisonly2.36F, and since the thermographs are only accurate to within 12 F, it is reasonable

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to assume that this difference is due to'a difference in calibration.

c-W- f -'--er v- r s--e +w .----.m-.-,.,,_ ,y ,s r- p . - - - - y _,.---,.y.

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. 3-CONCLUSI0ii

[ Based upon the data available, the Joseph M. Farley Nuclear Plant

, does not contribute to increases in the temperature of the Chattahoochee River.

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FIGURE .

- L f Andrews Lock & Dom CRM 46.5 II Upstream Sample ---+ 1 CRM 46 Point Schematic Diagram of Chattahoochee River Hear the Joseph M. Farley Nuclear Plant

. CRM 45 1

Intake I}

Po

  • CRM 44 CRM 43,8g2- '

PLANT INTAKE l

PLANT DISCHARGE CRM 4 3.5 -

I CRM - Chattahooches River Miles 3 w .

Dischargep .. - ..CRM 43 -

Sample -

Point ,e (1) Sampling station upstream from intake canal. ].

(2) Sampling station in intake canal.

(3) Sampling station below plcnt discharge.

(4) Sampling station downstream from discharge 'tCRM 42 structure. i}

l CRM 41.3 4 k CRM 41 Downstream Sample Point , p

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aLanaua mwtn coummv JostPM u ramLtv HvCLtaR plant

( (NVih0Nuthfab TECHNICAL EPECthCATC6t$

  • THERMAL MONITOrt NG a NON-RADiOLOGtCAL WATER

.i w SAM PLING STATIONS 3_g7 FIGURE 31-1 C

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APPENDIX I PRE-OPERATIONAL THERM 0 GRAPH DATA N

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j 4 ., PRE-OPERATIONAL THERM 0 GRAPH DATA

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- I ' UPSTREAM DOWNSTREAM ,

I, TEMPERATURE TEMPERATURE , ,

YR MO DA (DEGREES F) (DEGREES F)

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76 19 46.0 . ,

76 1

1 16 46.0 . j 76 1 17 46.0 .

76 1 1A 46.0 .

76 1 19 43.0 . ,

76 1 20 43.8 ..

76 1 71 44.0 .

l 76 1 22 44.0 . .

76 1 23 44.5 .

76 1 74 4A.1 . [ .

76 1 25 47.3 .

76 1 26 47.5 .

?7 46.A ,.

76 1 .

76 1 28 46.0 . ,

76 1 29 44.8 .

76 1 30 49.0 46.0

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76 1 . 31 .

76- 2 l' 46.0

  • i 76 2 *> 46,3 .

76 2 3 46.0 .

76 2 4 47.0 . '

? M 48,3  :

8 76 _.

j 76 2 6 48.0 . .

.  ! 76 2 7 48.0 . --~

! 76 2 9 4 0 ._ A_ .

76 2 9 48.5 .

-I 76 2 10 48.3 .

I 76 7 11 4A.3 59.0 j 76 2 12 50.0 50.R

  • ; 76 2 13 50.0 51 0 1 76 2 14 5.Q . A 51,3, {

i 76 2 15 52.0 53.3 l l 76 2 16 52.5 54.3 s i 76 2 L7 _52 1 54..5 T,- l:

76 2 LA 52.0 54.0

- 76 2 19 52.0 54.0 76 2 20 57.0 5.i._0 g 76 2 21 53.5 54.8 l 76 2 22 54.8 56.3 '

l 57.0 j 76 2 23 5.10 ,

I 76 2 24 55.0 57.0 .

76 2 25 55.0 57.0 76 2 2_6 55 0 51,. 0_.

i 76 2 27 55.0 57.0 '

76 2 28 55.R 57.8 g 76 2 20 57.9 59.0 .

t-3 58.0 59.0 i 76 3 1 '

57.9 59.0  ;

76 3 .?

76 3 3 57.0 59._0 _

76 3 4 57.0 59.0 57.0 59.7 l 76 3 5

(- 52 o 6,115 i '

76 76 76 3

3 3

6 7

8 60.3 61.0 61.0 61.0

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PRE-OPERATIONAL THERM 0 GRAPH DATA ' '

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YR MO DA UPSTREAM 00WNSTRM . l

{ 76 3 9 61.R 61.0 ,

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, 76 3 10 61.3 61.0 -

  • j 76 3 11 62.0 61.8 76 3 12 62.0 62.0 '

. 76 3 13 67.0 62.0 '

76 3 14 62.0 62.0 .  :.

! 76 3 15 61.5 67.0

' 76 3 16 62.0 67.0 .

l 76 3 17 62.0 62.0 ,

76 3 18 60.8 67.0 e i 76 3 19 60.5 61.5 -

76 3 20 61.5 61.0 76 3 21 67.0 67.0 ,

., l 76 3 22 62.0 62.0 76 3 23 62.0 62.5 .

i l 76 3 24 61.9 63.0 1, 76 3 25 61.8 63.0 t 76 3 26 . 63.0 76 3 27 . 63.9

, 76 3 28 . 63.0 3

76' 3 29 . 63.0 I

76 3 3n . 63.0 .

76 3 31 . 64.0

76 4 1 . 65.0 -

l' 76 4 2 . 65.0 c_

! 76 4 3 . 65.0

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76 4 4 . 65.0 .

76 4 5 . 65.0 76 4 6 . 65.0 76 4 7 . 65.0 i

=. 76 4 8 . 65.0 76 4 9 . 6'5. 3 76 4 10 . 66.0 i l 76 4 11 . 67.0 __

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l 76 4 12 . 69.0 i

(  ; 76 4 13 . 6R.0 - .' "-

76 4 14 l

. 67.0 76 4 15 63.0 67.0 76 4 16 63.0 67.0 76 4 17 63.3 67,0 -

76 4 18 63.3 67.0 '

76 4 19 64.0 67.0 ,

76 4 20 64.0 6 7_._0 76 4 21 64.0 67.0 -

76 4 22 64.0 67.0 i 76 4 23 64.5 67.0 t l 76 4 24- 65.0 67.3 ',

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I 76 4 25 65.3 68.0 4 76 4 I I 2_6 6.5.0 63._0 (

l 76 4 27 65.0 69.0 , j j 76 4 28 65.0 68.0 , l (t '

l. 76 76 4

4 20 30 65.0 65.0 69.0 69.0

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l 76 5 1 66.0 69.0  ; j i i E

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b b PRE-OPERATIONAL T HER'40GR APH DATA '

DA UPSTREAM DOWNSTRM f . YR MO 69.0 -

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. 76 5 7 6& 0 '

3 66.3 69.0 76 5 *

' 76 5 4 66.8 70.0 '

I 5 5 67.0 70.0 76 j 76 5 6 67.0 70.0 -

1 76 5 7 . 72.3 76 5 4 . 72.0 '

76 5 9 . 71.0 '

i 76 5 10 . 71 0 >

! 5 11 7 1 .,0 76 .

  • 76 5 12 . 71.0
  • 76 5 13 . 72.0 '

76 5 14 . 77.0 -

76 5 15 . 72.0 72.0 .  !

i 76 5 16 .

y i 76 5 17 . 72.0 e 76 5 19 . 72 3 19 73.0 76 5 .

. 76 5 20 . 73._0 21 73.0

. 76 5 .

76 5 22 . 73.0

-! 7 3 ._,Q 76 5 23 .

76 5 24 . 73.0 ,

76 5 25 . 73.0 i k-76 5 26 . 73.0 76 5 27 . 73.0 ,

76 5 28 . 73.8 29 74.,Q 76 5 .

76 5 30 . 74.0

  • 76 5 31 . 74.0 76 6 1 . 74.0 76 6 2 . 74.0 6 3 75.0 .,

76 .

1 76 6 4 . 75_.0 .

75.0 76 6 5 . , ,

l 6 75.0

.l 76 6 .

1 76 6 7 . 75.0 76 6 8 . 75.0 76 6 9 . 75.0 76 6 10 . 75.0 ,

6 11 76.0 ,

76 .

j 76 6 12 . 76.0 76 6 13 . 76_.0

  • 1 76 6 14 . 76.0 76.0 }

76 6 15 .

76 6 16 76.0 l. '

76.0 i 76 6 17 72.0 .

18 77.0 76.0

  • 76 6 I 76 6 19 72.0 76_.0 '

76 6 20 72.0 76.0  :

76.0 -

l 76 6 21 77.0

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76 6 22 7?.O 76 _0 a 76 6 23 77.0 76.5 77.0 i 6 24 7?.5 l 76

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. t PRE-OPERATIONAL THERMOGRAPH DATA * .

YR M0 0% UPSTREAM 00HN S T P.M 76 6 75 . 77.0 l.

76 6 26 . 77.3 .

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76 6 27 . 78.0

- 76 6 2R . 78._0 76 6 29 . 78.0 -

78.0  !

76 6 30 .

76 7 1 . 78.0 76 7 2 . 78.0

  • 76 7 3 . 79.5 1 76 7 4 . 80.3 ,

1 76 7 5 . 80.0  :

76 7 6 . 80.0 '

76 7 7 . 80.0 ,

~* 76 7 8 90.3 80.0 90.0 81.0 i 76 7 9 76 7 10 90.0 81.0 1-76 7 11 80.0 81.0  !

, 76 7 12 90.0 R1 0 76 7 13 80.7 81.0 76 7 14 80.8 81.0 76 7 15 80.3 81.0

. 76 7 16 80.R 8.1 0 =

! 76 7 17 31.3 82.3

  • 76 7 18 92.0 82.3 v-
  • 76 7 19 91 .3 R_R. 3 _,

l 76 7 20 91.0 R2.3 76 7 21 81.0 82.3 76 7 77 A1.0 A?.3 76 7 23 82.0 82.3 l 76 7 24 87.0 87.3

. 82.,3

! 76 7 25 9 7_. 5 1 76 7 26 83.0 83.3 76 7 27 82.8 8?.5 -

l 76 7 2a qt.o q1,5 l ,

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t' 76 7 29 81.5 81.5 * "-

. 76 7 30 82.0 81.5 76 7 31 82.3 82.0 76 8 1 . 82.0 76 8 2 . 83.0 76 8 3 . 83.0  ;

76 8 4 . 83.0 '

76 8 5 . 83.0 76 8 6 . 83_ ._0 __

76 8 7 . 83.8  ?

f 84.0 I 76 8 8 .

0 84.0 l 76 8 . ' '

84.0 ',

76 8 10 .

76 8 11 . 85.0 76 8 17 . 8_3_.3 76 8 13 . 83.3

  • l 14 83.3  :

[. 76 76 8

8 15

. 83.3

(' j 76 8 16 . 83.3 ,

76 8 17 . 83.3 ;g 65 a

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PRE-OPER ATIONAL THER40GR APH D AT A ,

YR MO DA UPSTREAM DOWNSTRM

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' 76 R 1R - R7.9

  • 76 8 19 . 82.0 li 76 8 20 . 82.0 ,

76 R 71 . R9.0 76 8 22 . 82.0 -

76 8 23 . 82.0 76 8 74 . R2.0 76 8 25 . 82.0

  • 76 8 26 . 82.0 -

76 9 77 . 81.8 *

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76 9 28- . 81.0 76 8 29 . -81.0 '

- 76 8 30 . RI.O 76 8 31 . 81 0 76 9 1 . 81.0 .

l 76 0 2 . RI.D 7- ;

76 9 3 . 81.0 76 9 4 . 81.0

. . 76 9 15 78.7 74. 7 76 9 16 78.0 75.8

76 9 17 77.a 75.8 '

76 9 18 7E 0 75. 8 .

76 9 19 78.0 76.5 '

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76 9 20 70.0 77.0 77.0 P- (

76 9 21 77.?

1 76' 9 22 77.0 77.0 76 9 23 77.0 77.0 76 0 ?4 77.A 77.D l 25 78.0 77.0 l 76 9

  • 76 9 26 7P.0 77.0 l W

76 9 27 77.a 77.Q 76 0 29 77.5 77.0 76 9 29 70.0 76.3 .,

7 6 . 0 ... _ .

76 4 30 77..J '

76 10 1 76.5 76.0 ,_

. 76 10 2 76.0 75.3 ,

3 76.0 79.0 l 76 10 l 76 10 4 75.3 75.0 l

76 10 5 75.5 75.0 76 10 6 76.0 75.0 ,

  • l 76 10 7 75.0 75.5 ,

74.9

  • f 76 10 8 75.0 )

76 10 0 77._O 73 .0.

76 10 10 71.0 72.0 l 76 10 11 69.5 71.0 ,

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76 10 }2 60.0 71.0 ,

13 68.8 70.3 l'

76 10 76 10 14 70.3 70.5 .

76 10 15 71.0 71.0 t

76 10 16 71.0 71.0 71.0 j 70.3  !

76 10 17 76 10 1P 60.0 71 0 .

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. 76 10 10 68.3 70.3 70.0 l 76 10 20 6R.5 l

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PRE-OPERATIONAL THER40 GRAPH DATA ,

e 1 y YR MO DA UPSTREAM DOWNSTRM .'

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76 10 21 67.0 69.3 t' ;

76 10 22 65.5 68.5 t 76 10 23 65.0 67.0 -

.i 65.0 67.0 l' 76 10 24 '

76 10 25 64.8 67.0 .

76 10 26 65.0 67.0 -

76 10 27 64.R 67.0 -

76 10 28 64.5 67.0 76 10 29 63.5 66.0 '

76 10 30 63.0 65.0 l 76 10 31 69.0 65.0 -

L 76 11 1 62.3 64.0 i

76 11 2 61.3 63.0 63.0 ',

76 11 3 60.5 ,

76 11 4 60.8 63.0 1

76 11 5 60.R 67.0 76 11 6 60.0 62.8 1-76 11 7 59.8 61.8  !

! 76 11 9 50.0 61.0 I'

76 11 9 SP.0 61.0 76 11 10 37.8 60.0

. 76 11 11 58.0 .

76 11 12 50.3 . .

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76 11 13 SP.8 .

. 76 IJ 14 97.5 . ..

! 76 11 15 57.0 . YR 76 11 16 55.0 . 3 f 76 11 17 59.0 .

76 11 18 57.8 56.0 j 76 11 19 53.0 56.0

%  ! 76 1.1 20 54_.5 56._0

! 76 11 21 55.5 56.0 j 76 11 22 59.A 56.0 76 11 23 54.5 56.0 76 11 24 53.0 55.3 _

i' I 76 11 25 53.0 55.0 -i 76 IJ 26 53.0 55 3 76 11 27 53.1 55.0 76 11 2R 54.8 55.0 76 11 29 54.5 56.0

  • l 76 11 30 50.8 55.5
  • 76 11 31 50.0 53.5 ,

76 12 1 40.8 51.0 ,

76 12 2 50.0 52.0 (j 76 12 3 50.0 52.0 ,

76 12 4 90.0 57.0 _

76 12 5 50.0 52.0 2 76 12 6 51.0 52.0 I T 76 1_2 7 51.0 52.0

  • i j 76 12 8 49.5 52.0 76 12 9 40.0 50.5 i {*

76 12 10 4R.0 5n.0 t

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. 76 12 11 49.0 50.0 []

76 12 12 49.0 51.0 -

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PRE-OPERATIONAL THFRMDGRADH DATA

  • s YR MO DA UPSTREAM 00WNSTRM ,.

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76 17 13 50.0 51.0 1 p 7 76 12 14 50.0 51.0 '

49.0 51.0 d 76 12 15 '

76 12 16 49.0 41.0 76 12 17 49.0 56.0 76 12 18 49.0 51.0 . t 76 17 19 49.5 51.0 76 12 20 50.0 51.0 76 12 21 49.0 51.0 76 12  ?? 40.0 49.J ..

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76 12 23 47.5 49.0 .

76 12 24 46.3 49.0 76 17 25 46.0 49.0 '

76 12 26 46.5 49.0 -

76 12 27 47.0 49.0

  • 76 I? 78 47.0 49.0 i 76 12 29 47.0 49.0 1
76 12 -

30 46.5 49.0 76 12 31 46.0 49.0

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9 APPENDIX II POST-OPERATIONAL THERM 0 GRAPH DATA M

4 . POST-OPERATIONAL THERM 0 GRAPH DATA i

UPSTREAM '

INTAKE DOWNSTREAM TEMPERATURE TEMPERATURE TEMPERATURE '

, 'f R M0 DA (DEGREES F) (DEGREES F) (DEGREES F)  ;

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0

, , 77 17 13- . - 9 32 .0 li

} 77 12 14 . . 53.5  :

5 77 12 15 . . 53.8

, 77 12 16 - -

Sl A -

77 12 17 . . 53.5 .  :

i 77 12 18 . . 54.5 77 17 to . . 54.0 I, 54.0 77 12 20 . .

77 12 21 . . 53.0

[ 77 12  ?? . . 52.0 .

?

77 12 23 . . 51.0

! 77 12 24 . . 51.5 *

( 77 12 25 . . 52.n 77 12 26 . . 51.0 i 78 2 15 46.5 46.5 46.3 1.

78 7 16 46_.5 46.7 45.5 I l

78 2 17 46.5 46.9 45.5 l"

78 2 18 46.8 47.3 46.0

, .] 78 2 19 47.4 49.0 46 0 78 2 20 46.9 48.0 45.9 78 2 21 46.9 49.0 46.1 ,

7?

  • 22 t? 9 f.7 f.t 44.S  !

78 2 23 46.5 47.0 44.5 -

78 2 24 46.5 47.3 44.5 (_

1 78' 2 25 46.4 47 J 4 4 1__,

J 78. 2 26 47.3 49.0 47.9 78 2 27 48.0 49.5 45.1

! 78 2 2R 49.1 90.0 46.0

' 78 3 1 49.4 50.0 46.0  :

l 78 3 2 49.3 50.0 46.3 g i 78 3 3 49.4 50.0 46.5 l 78 3 4 49.5 50.3 46.5 78 3 5 49.1 50.0 47.0 '

78 3 6 4 9 .,5 50.0 4 6,._,5  !

78 3 7 49.3 49.B 46.5 *- j 78 3 8 49.8 49.9 47.3 78 3 9 52 1 52.a 49._4  ;

78 3 10 51.9 52.9 49.5 f 78 3 11 51.0 51.0 48.1 '

79 3 12 50.9 5 t_. 0 48.4 .

78 3 13 52.3 52.3 49.5 78 3 14 53.4 53.5 50.3 l 78 3 15 5.3_.f. 53._8 50_.6 .

78 3 16 54.1 54.5 51.3  ;

78 3 17 54.4 55.3 53.0 78 3 19 54.0 66.0 53.5 '

' 78 3 19 55.0 56.0 54.0 l 78 3 20 55.3 56.0 54.5 l 78 3 71 5,5_. 5 56.0 55.0 56.5 f

78 3 22 55.9 .

(. 78 78 3

3 23 74 55.9 51 3 57.5 5 A _4

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78 3 25 59.2 59.0 ;i 78 3 26 59.3 60.0 .

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POST-OPER ATIONAL THERMOGR APH D AT A b ,

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' DOWNSTRM

- YR MO DA UPSTREAM INTAKE l  : I 78 3 27 5.9.8 .

60.0 .

I 78 3 28 60.8 60.0 .

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78 3 29 60.3 60.0 .

78 .Jl _ . 30 60.0 60.3 . ,

73 3 31 60.0 61.0 .

78 4 1 61.0 61.5 .

t 78 4 2 62.0 63.0 .

i 78 4 3 . 64.0 . ,

78 4 4 . 65.0 .

78 4 5 . 63.9 . ,

78 4 6 . 63.0 ._

78 4 7 . 63.0 .

I 78 4 8 . 63.0 .

78 4 .9 . 64.5 .  ;

65.8  ;

78 4 10 . .

66.3  ;

78 4 11 . . __

78 4 12 64.0 66.0 58.3 78 4 13 64.3 64.0 58.0

. 78 4 14 65.1 65.3 58_.3 78 4 15 65.6 66.5 59.1

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. 78 4 16 66.0 67.0 61.4 '

Ta 4 17 33.3 57.3 60.4 78 4 18 66.5 67.0 59.9 . f

. 78 4 19 65.8 66.0 59.8 ,_l 66.5 66.5 60.0 f 78 4 20 4 21 67.0 67.5 61.4 . l.

78 78 4 22 67.0 69.0 62.9 78 4 23 67.7 AB.O 62.0 5

78 4 24 67.0 68.0 62.9

  • 78 4 25 67.0 69.0 62.1 78 4 26 66.9 67.8 6 1 _. ,q _ _ $

78 4 77 66.6 67.0 62.3 [

64.0 8 78 4 28 67.0 67.3 -

78 4 29 67.0 68.0 66.3  !:

30 67.3 68.0 67.4 as?

78 4 78 5 1 67.9 68.0 68.3 78 5 2 67.5 68.0 67.5 2 78 5 3 67.5 6R.0 66.5 [

78 5 4 67.5 . 67.6 , 3 1

78 5 5 68.0 . 64.0 +

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78 5 6 69.8 . .

! 78 5 7 70.0 . . s 7,8 5 8 70, 0 . .

l l

78 5 9 70.0 70.0

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l 78 5 10 . . 3 78 5 23 76.5 78.5 78.0 .

76.1 . t 78 5 24 75.3 75.3 78 5 75 . 75.0 74.0 75.1 ll R

< 7R S 26 75.0 74.0 75.1 ' '

78 5 27 75 0 74.0 75.1 78 5 28 75.0 74.0 76.8 (h i 3

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75.0 74.0 75.4 78 78 5

5 29 30 74.9 74.0 74.0 75.6 77.0

'k 78 5 31 74.0 '  ;

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POST-OPER AT IDN AL' THEP.MOGR APH D AT A l '

INTAKE OOWNSTRM .

YR MO DA ' , UPSTREAM ,i s

77.0 76.5 (

7R 6 1 74.9 ',

75.0 72 0 76 3 78 6 2  ::

74.0 . 77.0

  • 78 6 3 74.0 . 78.0 I

7A 6 4 74.0 . 77.3 78 6 5 3

'6 . 77.0 78 6 '

l 77.R

! 7R 6 7 . .

. 77.3 73 6 8 . .

i 9 . . 76.0

  • j 78 6 10 . 77.0 79 6 . +

. 79.0 .

78 6. 11 . *

. 78.0 ,

78 6 12 .

6 13 79.a 77.0 T e i3 78 78.0 l ,

6 14 78.6 77.0

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