ML18088A510

Annual Environmental Report No. 2 for the Year 1977

ML18088A510
Person / Time
Site:	Saint Lucie
Issue date:	03/30/1978
From:	Florida Power & Light Co
To:	Office of Nuclear Reactor Regulation
References
Download: ML18088A510 (50)

Text

FLORIDA POMER 8, LIGHT CONPAflY -.

ST, LUCIE PLANT UINIT NO, 1.

Fl.ORIOA POWEA Ca UOHT COMPANY PEOPLE... SERVING PEOPLE ANHLtAL ENVI ROjlf'"FNTAL REPORT NO, 2 FOR THE YEAR Dgctgt g g~395 8ÃfV/40 CorItrol P 7<~4@06'0 Date 0 j~/~ef AMRNoitY00CKH'ILE Documenb 1977

f S

1 I. INTRODUCTION This report, is submitted by Florida Power a Light Company in accordance with St. Lucie Unit 1 Environmental Technical Specifications, Appendix B, Section 5.6.1.a.

The report covers the period January 1, 1977 through December 31, 1977.

II .

SUMMARY

St. Lucie Unit No. 1 reached the 100% power level in January, 1977 and experienced no operating difficulties requiring shutdowns of significant length during the reporting period. At no time did the unit exceed any of the thermal limitations as imposed by the Environmental Technical Specifications.

Results of all chemical parameter monitoring have shown that levels of concentration were as expected and have not changed significantly during 1977.

The results of the biological surveillance program are dis-cussed in the report entitled "Ecological Monitoiing at the Florida Power 6 Light Company St. Lucie Plant '1977."

This report was prepared in accordance with Environmental Technical Specifications 3.1.B, 4.1, and 4.2. Zt compares the data collected during 1977 with the results of the baseline study and the 1976 operational study 2 to assess the effects of plant construction and operation on

the major biotic communites in the near shore marine environment. It was concluded from this assessment that negligible impacts have resulted from the operation of the plant.

Only a few months remain until two years of plant operation are complete. We anticipate. that the monitoring during that time will continue to demonstrate that the effects attributable to plant operation are environmentally acceptable. Therefore, we are preparing a summary report to be submitted under separate cover. That report will contain a request for revision of the biotic monitoring program at St.. Lucie in, accordance with Environmental-Technical Specifications 3.1.B and 4.1.

Preoperational Baseline Environmental Study performed by the Florida Department of Natural Resources Marine Research Laboratory in conjunction with FPL, September 1971 to July 1974.

1976 Annual Environmental Monitoring Report entitled "Ecological Monitoring at the Florida Power G,Light Company St. Lucie Plant."

III. ABIOTIC SURVEILLANCE RESULTS

1. Thermal The four thermal limitations of concern are: 1) dis-charge canal maximum release temperature (ill'F);

2) maximum temperature rise across the condenser (24'F);

3) maximum temperature within the zone of mixing (93'F);

and 4) maximum surface temperature rise over ambient within the zone of mixing (5.5'F) . Analysis of all thermal data taken shows that. no thermal limits were exceeded.

1.A. Maximum dischar e canal water tern erature The maximum discharge canal water temperature was de-termined and tabulated (Table 1) for each day that the plant was operating. An analysis of the data shows that the maximum discharge temperature during the year was 110'F occuring on only 0.6% of the operating days (two days). The occurences were in July and:September 'with the unit operating at, approximately 95% and 97% of full power respectively. During these hot months with the plant at high power levels, it is expected that water temperatures will be higher.

1.B. Condenser a T Table 2 is a time duration table for the temperature rise across the condenser. It shows that the condenser aT reached the Technical Specification limit of 24'F on approximately 56% of the operating days. Since the condenser desi'gn temperature rise is 24'F, the maximum temperature rise is expected to be close to or at this

value on most of the days for a base-loaded plant such as St. Lucie.

The environmental impact on the ecosystem in thearea of the thermal plume is dependent on the discharge canal water temperature rather than the condenser hT.

As was discussed above, the discharge canal temperature was below the Technical Specification limit during 1977.

Zone of Mixin Maximum Water Tem erature Water temperature data within the zone of mixing was gathered using two self-contained recording thermographs as described in Environmental .Technical Specification 3.1.A.6.

The maximum water temperature for each day is. listed in Table 3. The recording thermographs in the discharge area were lost twice during 1977 and data were not recovered. (FPL Reportable Occurrence Nos. 335-8-77-01, and 335-B-7704). Xt is felt, however, that the maximum water temperature limit..for the zone of mixing was not exceeded during these outages. This belief is based on the following factors: 1) The discharge canal temperature during the outages were normal. 2) There is not indication that mixing was hampered during the outage. 3) Similar plant operating conditions during the remainder of the year produced a maximum zone of mixing water temperature

l of 90'F for only 0. 8% of the operating days. This is 3'F below the Technical Specification limit and occurred infrequently.

Zone of Mixin Surface Tem erature Rise As shown by Table 4, 'the maximum surface temperature",

rise within the zone of mixing was 5.5'F which occurred only 1.2% of the operating days. Although a temperature rise of 5.5'F is the technical specification limit, it is considered to- be acceptable because of the small portion of the operating time during which it occurred and because of the inherent difficulties of determining real temperature differences in the open ocean (i.e.

instrument accuracy, accuracy of measuring, the ambient temperature, and the natural temperature fluctuations in the ocean). The maximum temperature ris'e was: determined using data from two recording thermographs as required by Environmental Technical'Specification 3.1.A.6.

Section 1.C. above indicated that two outages of the thermographs in the discharge area occurred. in 1977. One of these outages also involved the intake area thermograph.

During the time of the outages, the hT in the zone of mixing was not determined. Monitoring of other thermal parameters during those periods shows, however, that no unusual conditions existed that might have caused the zone of mixing temperature rise to be abnormally high., Therefore,

'he thermograph data shows that the temperature rise in

T

\

the thermal plume did not exceed the Technical Specification limit during 1977.

1.E. Tem erature Rise Outside The Zone Of Nixin The surface temperature rise above ambient, outside the 400 acre zone of mixing is limited to 1.5'F from June through September and 4'F during the remaining months. Infrared aerial photography was used to show compliance in accordance with Environmental Technical Specification 3.1.A.6. Four infrared flights were performed approxi-mately three months apart to reflect seasonal conditions.

The flights were performed by Texas Ins truments Inc.

Ecological Services Division and are represented as Quarter I through Quarter IV.

Each Quarter's flight was scheduled to occur during low and high tide conditions, weather permitting. The results of Quarters I, II, and IV (Shown below') demonstrate that compliance with the 4'F criteria for temperature rise outside the 400 acre mixing zone has been accomplished.

1 A Quarter I flight at low tide was not performed due to equipment maIfunctions.

t I Actual Area of O'F Isotherm as 8 of 400 Acre Mixing Zone.

Reactor Area Tide of F 11<<lht Power (8) (acres) Condition Allowable Quarter I 82 3.' High 0. 78 Quarter II 98.4 98.4 2.4 0.1 High'igh 0.6

0. 02 99.4 5.4 Low 1.4 Quarter IV 99.6 N.M.* Low N.M.*

100.1 22.19 High 5.5

• N.M. = Not Measurable The Quarter III flight results (Shown below).:.demonstrate.

compliance with the 1.5'F criteria for temperature rise outside the 400 acre mixing zone during the months from June through September.

Actual Area of 1.5'F Isotherm as 8 of 400 Acre Mixing Zone.

Reacto Area Tide 8 of Flicihh Power (0) (acres) Condition Allowable Quarter III 100 269 Low 67 4.9

99. 8 19.5 High In conclusion, compliance with the limitations on temperature rise outside the 400-acre zone of mixing has been accomplished throughout 1977. Detailed information's presented in the quarterly reports which are enclosed with this report.

2. Chemical Table 5 summarizesthe chemical monitoring program at St.

Lucie. Dissolved oxygen, pH, salinity, and total residual chlorine are monitored in the discharge canal. Dissolved oxygen is monitored in the intake canal.

Dissolved oxygen levels in both the intake and discharge canals were observed to fluctuate weekly between about 6.00 ppm and 8.00 ppm. This is consistent with the pattern observed in 1976.

The pH is measured daily in the discharge canal. It varied from a low of 8.00 to a high of 8.25. This is quite stable as would be expected in highly buffered sea water. These levels are consistent with those reported for 1976 and are well within the limits established by the Environmental Technical Specifications.

Salinity concentrations in the discharge canal reached a low of 29.4 ppt and a high of 35.5 ppt. These levels are comparable to those observed previously and reported in the 1976 Annual Environmental Monitoring Report for St. Lucie.

Total residual chlorine levels ranged from the detection limit of 0.01 mg/1 to a high of 0.08 mg/1. These are all below the technical specification limit of

0. 1 mg/1.

Table 6 presents data from the St. Lucie heavy metals monitoring program. Five elements were found to be at levels less than their respective detection limits in both the intake and discharge canals throughout the year.

f I 0

Element. Detection Limit Chromium <0.02 ppm Lead <0.05 ppm Mercury <0.0002 ppm iVickel <Q.Q2 ppm Copper < Q. Q2 ppm The minimum detectable level for arsenic was increased from 0.001 ppm to 0.002 ppm during 1977 by the laboratory that FPL contracts -to analyze its sample. Ne have not yet received the results from the final arsenic sample analysis for 1977. Based on the trend observed during-1976 and 1977, however, we anticipate that it, will show a level below the detection limit. One sample (8-1-77) indicated a measurable quantity of arsenic in the intake canal. Xn view of the monitoring results during 1976 and the remainder of 1977, we have concluded that this was due to contamination in the sample or to an error in measurement.

The recorded levels of iron and zinc are reported in Table 6.

10 IV. MINIMUM EFFECTIVE CHLORINE USAGE STUDY PROGRESS REPORT Environmental Technical Specification 4.3 requires that a study be conducted "to determine the minimum amount of chlorine necessary which will afford adequate protection to the condenser while avoiding unnecessary discharge of chlorine to the environment." This study was performed using condenser cleanliness and efficiency as a means of determining when minimum chlorination had been achieved.

Analysis of the data collected during 1977 does not result in a direct correlation between condenser efficiency and chlorine injection rate (See Figure 1) Plant personnel have visually observed, however, an increase in fouling in other parts of the system as a result of operating at low chlorination rates; i.e. condenser water box, component cooling water heat exchangers, and intake, str~ctures. At a chlorination rate of 83.3 lbs per hour or less, the fouling in parts of the system other than the condenser is unacceptable. Therefore, the chlorination rate has been returned to 104 lbs per hour which was the original rate. This has resulted in an improvement.

Table 7 summarizes the chlorine injection data taken. A comparison-of the concentrations of residual chlorine measured at the discharge canal terminus shows that the levels are approximately the same fear'll injection rates. Also, .the concentrations at the- canal terminus range from 0.005 to 0.08 ppm all of which are below the technical specification limit of 0.1 ppm.

11 Therefore, returning the chlorination rate to 104 lbs per hour does not result in an unnecessary discharge of chlorine to the environment.

V. ADDITIONAL BIOTIC RESULTS Sea turtle entrapment in the intake canal has occurred during the monitoring period of January 1, 1977 through December 31, 1977. A large mesh turtle net placed in the intake canal is used to capture the entrapped turtles.

A total-of 74 turtles were caught, tagged, and released unharmed to the ocean. Loggerhead- turtles accounted for 70 of the number, with three green turtles and one leather-back turtle comprising the balance.

Mortality of sea turtles was also noted in the intake canal with six loggerheads and two greens being recovered.

With the exception of one drowning, the cause of death was unknown.

The turtles were entrapped eleven out of twelve months of the year with the largest number being caught and released during the month of September. The weight and carapace size of the loggerheads indicates that the majority of these turtles are subadults.

The capture/release method is an interim solution to turtle entrapment while a final solution is being assessed and engineered.

VI. CHANGES TO THE ENVIRONMENTAL TECHNICAL SPECIFICATIONS None

I 13 VII. REPORTABLE OCCURRENCES There were four Environmental Reportable Occurrences during 1977.

R. O. Number Date of R. O. Title 335-8-77-01 1-10-77 Discharge zone of Mixing Recording Thermographs.

335-B-77-02 1-26-77 Waste Gases 335-B-77-03 8-29-77 Fish Impingement 335-B-77-04 10-10-77 Intake and Discharge Area Thermographs

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1977 TABLE 1 ST. LUCIE PLANT MAX. DISCHARGE CANAL TEMP.

TEMPERATURE DURATION CURVE NUMBER MAXIMUM ACCUMULATED OF DAYS TEMP.-- F 8 of 0 eratin Da s 2 110 0'. 6 7 109 2.8 12 108 6.6 23 107 13.9 27 106 22.5 9 105 25.3 25 104 33.2 25 103 41.1 22 102 48.1 19 101 54.1 7 100 56.3 10 99 59.5 5 98 61.1 10 97 64.2 ll ll 96 95 67.7 71.2 6 94 73.1 8 93 75.6 10 92 78.8 6 91 80.7 8 90 83.2 4 89 84.5 5 88 86.1 10 87 89.2 6 86 91.1 6 85 93.0 8 84 95.6 7 83 97.8 1 82 98.1 2 81 98.7 1 80 99.0 2 79 99.7 0 78 99.7 0 77 99.7 0 76 99.7 1 75 100.0

0 1977 TABLE 2 ST. LUCIE PLANT MAXIMUM CONDENSER hT TEMPERATURE DURATION CURVE Number Maximum Accumulated

~Of Da s hT P  % of 0 eratin Da s 181'9 24 55.9 23 74.1 32 22 84.0 22 21 90.7 10 20 93.8 1 19 94.1 3 18 95.1 1 '17 95.4 1 16 95.7 4 15 96.9 1 14 97.2 3 13 98.2 12 99.4 1, 11 99.7 0 10 99.7 0 '9 99.7 0 8 99.7 0 7 99.7 0 6 99.7 1 5 100.0

1977 TABLE 3 ST. LUCIE PLANT ZONE OF MIXING MAXIMUM TEMPERATURE TEMPERATURE DURATION CURVE Number Maximum Accumulated

~of Da e ~Tem -'F of 0 eratin Da s 2 90 .0. 8 5 89 2.8 7 88 5.7 15 87 11.7 18 86 19.0 16 85 25.5

27. 84 36.4 17 83 43.3 30 82 55.5 23 81 64.8 19 80 72.5 8 79 75.7 3 78 76.9 7 77 79.'

9 76 84.2 7 75 87.0 9 74 90.7 6 73 93.1 5 72 95.1 1 71 95.6 1 70 ,96. 0 4 69 97.6 2 68 98.4 3 67 99.6 1 66 100.0

1977 TABLE 4 ST. LUCIE PLANT ZONE Or MIZING mz. SUarACE TEMP. RISE TEMPERATURE DURATION CURVE Number . Maximum Accumulated

~Of Da H Rise-'P of 0 erat:i'n Da s 2 5.5 1.2 0 5.4 1.2 0 5.3 1.2 2 5.2 2-3 3 5.1 4.0 9 5.0 9 '

0 4.9 9.2 3 4.8 11.0 4 4.7 13.3 1 4.6 13.9 10 4.5 19.6 1 4.4 20.2 4 4.3 22.5 12 4.2 29.5 3 4.1 31.2 12 4.0 38. 2 5 3.9 41.0 2 3.8 42.2 4 3.7 44.5 1 3.6 45.1 11 3.5 46.2 1 3.4 46.8 2 3.3 48.0 15 3.2 56.6 2 3.1 57.8 14 3.0 65.9 2 2.9 67.0 2 2.8 68.2 15 2.7 76.9 0 2.6 76.9 5 2.5 79.8 0 2.4 79. 8 1 2.3 80.4 8 2.2 85.0 2 2.1 86. 1 4 2.0 88. 4 2 1.9 89.6 2 1.8 90.8 8 1.7 95.4 0 1.6 95.4 1 1.5 96.0 0 1.4 96.0 0 1.3 96.0 5 1.2 98.8 0 1.1 98.8 2 1.0 100.0

ST. LUCIE PLANT UNIT NO. 1 CHEMICAL PARAMETERS TABLE 5 JANUARY 1977, Month INTAKE 'ISCHARGE REMARKS DAY 1 D.O D.O.

3.

SALINXTY T. R-C. 3 8.20 35.0 8.20 34.9 .02 8.20 35.0

6. 60 8.22 6. 90 34. 6 8-20 34.8 7 8.20 35.0 8.21 '5.0 8.20 34.8 8.2 35.6 8.2 35.2 7.1 8.15 7.1 35.5 8.21 35.2 14 8.15 35.1 15 8.2 35.1 16 8.2. 35.1 17 8.15 34.6 .02 18 8.15 35.2 19 7.2 8.1 7.2 . 35 20 8.15 21 8.1 -35 22 8.1 35 23 8.15 35 24 8.1 35.2 .02 25 8.1 35. 2 26 7.3 8.1 7.2 35.1 27 8.1 35.2 28 8.15 35 29 8.10 34.8 8.05 34 31 8.15 35 .02 NCYZES:

Dissolved Oxygen in ppm.

2 Salinity in, ppt.

3

.Total Residual Chlorine in ppm.

l LUCIE PLANT UNIT No. 1 CHEMICAL'ARAMETERS

}.977:-'T. TABLE 5." 'g.cOnt. )

Mont/ FEBRUARY INTAKE DISCHARGE REINS DAY 3 D.O. pH D.O." SALZNXTY T.R.C.

8. 10 35.0 7.6 8.12 7.7 33.5

8. 12 35.0 8.12 35.0 8.10 34.5

8. 12 34.8 8.10 35.0 8.10 35.2 0.02 7.3 8.3.2 7.2 35.0

8. 10 35.2 8.12 35.1 14 8. 10 35.2 15 8. 11 35.1 Did Not Chlorina e 16 6.9 8.18 7.3 35.0 17 18 8.15 35.0 19 8.14 34.9 20 8.20 35 '

8.10 35.0 22 8.13 35.0 0.02 23 6.6 8.14 6.6 35.1 24 25 26 8.10 4.

27 8.11 34.8 28 8.12 35.1 29 31 NOTES:

Dissolved Oxygen in ppm.

Salinity in ppt.

3

.Total Residual Chlorine in ppm.

ST. LUCIE PLANT UNIT NO. 1

~

CHEMICAL PARAMETERS TABLE 5,(cont.)

MARCH 1977" Month INTAKE DISCHARGE REMARKS DAY 3 D. O. D.O. SALZNTB T. R.C.

8. 13 4.9 0.02 6.7 8.10 6 '5 35.1 8.10 34.5 8.12 33. 5 8.13 33.5 8.12 34.0 8.13 34.8 8.12 35.2 6.4 8.'10 6.0 34.8 10 8.10 35.0 0.02" 8.10 35.5 12 8.10 35. 0 13 8.10 35.5 8.10 35.0 15 8.10 35.3 6.6 8.20 6.1 35.0 2 17 8.11 35.0 18 8.17 35.0 19 8.13 34.8 20 8.10 34.6 8.15 35.2 22 23 6.5 24 8.18 35.2 25 8.21 35.4 26 8.20 35.2 27 8.20 35.1 28 8.15 34.8 29 8.18 35.0 0.05 6.8 8.15 6.7 34.8 0.04 31 8.18 35.0 NOTES:

Dissolved Oxygen in ppm.

2 Salinity in ppt.

3

.Total Residual Chlorine in ppm.

I ST. LUCRE PLANT UNXT NO. 1 CHEMXCAL PAKQIETERS TABLE 5 (cont.)

1977 -:. Month .

1NTAKE DISCHARGE BZMARES .

DAY 3 D.O. 1 D.O. SALON T. R.C.

8. 15 '4.6 8.21 34.8 8.18 35.0 8.17 34.9

8. 21 35;0'- '.02 7 3 8.19 7.3 35.0 8.18 35.0 8.18 35.1 8.18 35.1 10 8.20 35.0 8.'1 35.0 12 8.19 35.0 0.015

6. 95 8.17 6.7 35.0 14 8.10 35. 0 15 8;13 35. 0 8."11 34.8 8.15 34.5 Did Not Chlorina e '

18 8.20 34.9 19 8.21 34. 2 20 6 3 8.17 6. 95 34.5

'21' 8.18 34.5 23 8.18 33.5 24 8.18 33.8 8.17 34.0 26 8.20 34.1 27.

28 29 8.19 34.0 0.02 8.20 34.5 31 NOTES:

Dissolved Oxygen in ppm.

Salinity in ppt.

3

.Total Residual Chlorine in ppm.

/

ST.. LUCIE PLANT UNXT NO. 1 CHEMICAL PAKQ4ETERS TABLE 5 (cont. )

Month 1977 INTAKE 'ISCHARGE REEVES DAY 3 D. O. D.O. SALINITY T.R.C.

8. 15 34. 0 8.21 34.3 8.15 34.5 6.5 8.20 . 6.75 34. 0 0.025 8.14 34.8 8.15 34.5 8.12 4.6 8.12 34. 7 0". 03

8. 20 34.2 6.5 8.22 9 33.7 8.21 33.9 8.2 14 8.15 34. 0 15 8.20 33.5 16 8.18 33.9'3 17 8.15 '

18 6.2 8.18 .95 34.0 0. 05

.19 8.18 34. 2 20 8.15 33.9 8.18 34.0 22 8.19 34.2

'3 8.1215'6. 4.8 24 8.12 34.3 0.04 25 6. 05 8.11 5.90 34.0

'6 27 8.

8". 15 28'9 8.17 33.5 8.15 33.5

8. 33.5 NOTES:"

Dissolved Oxygen in ppm.

2 Salinity'n ppt..

3

.Total Residual Chlorine in ppm.

LUCIE PLANT UNIT NO. 1 CHEMICAL PAEV8KTERS 1977-:='T. TABLE 5 (cont.)

Month INTAKE  : DISCHARGE REMARKS DAY 3 D;0 D.O. SALZNXTC T.R.C.

6. 35

8. 19 34. 0 0.03 8.20 34.3 4 *8. 20 34.0 8.20 8.13

8. 18 34. 9 0.04 5.98 8.12 6.2 34.2 8.17 34.5 10 8.15 8.25 34. 6 8.15 34.9 14 8.11 34.9 0.03 15 6.00 8.13 6.2 35.0 8.12 34.5 17 8.19 34. 7 18 8.20 35.0 19 8.15 20 8.13 34.7 21 8.13 34.6 0.,03

22. 6.25 8. 10. 6.3 34. 1 23 8.12 34.4 24 8.11 34.6 25 8. 12. 33.

26 8.10 34.2 27 8.12 34.2 28 8.20 33.9 0.035 29 .8. 21 6. 5

33. 9 31 NOTES:

Dissolved Oxygen in ppm.

2 Salinity in ppt 3

.Total Residual Chlorine in ppm.

ST. LUCIE PLANT UNIT NO 1 CHEMICAL PAEQdCETERS TA'BLE 5 (cont. )

JULY 1977 ='. Month INTAKE DISCHARGE REMARKS DAY 1 3 D.O. D.O. SALZNZZY T. R.C.

8.21 33.8

'.20 34.0 3 8.22 33.5 8.20 34.3 8.23 33.9 0.03 6.6 8.16 6.1 34.2 8.13 33.8 8 8.17 3.5 8.14 33.7 10 8.16 33.5 8.16 34;4 8.20 ,34.0 0.03 6.1 8.18 5.9 31.0 8.16 31.8 8.12 .0 8.13 '33. 2 18 8.23 31.5 19 8.18 31;2 0.02 20 6.0 8.20 5.9 33. 1 21 8.20 32.0 0. 03 22 8.18 31.0 24 8.20 31.5 25 8.18 30.0 26 8.18 32.0 0.04 27 6.2 8.18 6.2 32.0 28 8.14 31.5 29 8. 20 30.5 8.20 31.1 31 8.20 31.0 NOTES:

Dissolved Oxygen in ppm.

Salinity in ppt.

3

~ Total Residual Chlorine in ppm.

ST. LUCIE PLANT UNIT NO. 1 CHEMICAL PARAMETERS TABLE 5 (cont. )

AUGUST 1977 = . Month INTAKE DISCHARGE REMARKS DAY 3 D.O. D.O. SALZNZlY T.R.C.

2 .6 8.20 29.4 0.06 3 '7. 95, 8.12 7.65 30.3 8.18 29.5 8.18 30.0 8.20 31.5 8.20 31.0 8.20 31.0 0.02 10 6.10 8.20 5.70 33.0 8.20 33.6 14 8. 12 .6

8. 17 32.4 8.16 32.4 0.08 17 6.30 - 8.20 5.90 33.5 18- 8.20 33.5 19 8.18 33.7 20 8.17 33.5 21 8.18 33.5 22 8.15 34.0 23 8.18 33-7 0. 02 24 '6. 10 8.13 6. 00 34 ~ 0 25 8.12 33.6 8.20 33.5 27 8.18 34.8 28 8.18 35.0 29 8.18 33.5 0.01 8.18 34.0 6.10 8.18 6. 00 34.0 0. 02 NOTES:

Dissolved Oxygen in ppm.,

2 Salinity in ppt.

3.

Total Residual Chlorine in ppm.

ST LUCIE PLANT UNIT NO. 1 CHEMICAL PARAMETERS TABLE 5 (cont.)

'197'7 =-: Month INTAKE 'ISCHARGE REMARKS DAY 3 D.O D.O. SALZNXTC T.R.C.

.6 8.16 34.0 8.17 34.2 8.15 34.0 8.15 34.0 0. 04 6.1 8.17 5.7 33.8

8. 17 33.8 8.15 33.9 10 8.17 34.0 8.17 34.0 8.17 33.8 8.3.8 33.8 0.04 6' 8.16 6.0 33.7 15 8.12 33.9 16 8.15 33.9 8.18 33'. 8 18 8.18 33.8 20 21 6.0 8.08 5.7 34.2 0.01 22 8.10 34. 1 23 8.14 34.0 24 8.10 34.0 25 8;13 34.3

'6 8.20 34.0 27 8.18 33.8 No Chlorination 28 6.8 8.16 6.2 33.9 29 8.13 34.0

8. 15 34.0 31 NOTES:

Dissolved Oxygen in ppm.

Salinity in ppt.

3

.Total Residual Chlorine in ppm.

ST. LUCIE PLANT UNIT NO. 1 CHEMICAL PAINTERS.

TABLE 5 (cont.)

1977 ==. Mpntg ocTQBER INTAKE DISCHARGE REMARKS DAY 3 D.O. D.O. SALINXTY T.R.C.

8. 14 34. 2 34.2 8.15 33.4

8.18 33.0 6.6, 8.20 8.2 34.0 0. 02 8.16 33.5 8.20 33.2 8.18 33.4 8.18 33.5 10 8.05 33.5 8.14 33.0 5.8 8.16 5.4 33.1 0.01 8.15 33-2 14 8.14 33-2 8.15 33.2 S.lo 33 '

8.08 33.1 18 6.0 8.12 5.6 33.2 19 8.12 33 '

20 8.15 33 ' 0.02 21 8.16 33.0 22 23 24 8.14 32.0 25 6. 8.15 5.9 32.3 0. 01 26 8.10 32. 0 27 8.20 32.5 28- 8.20 32.0 29 8.18 32.1

8. 20 32.0 31 8.12 32. 0 NOTES:

Dissolved Oxygen in ppm.

2 Salinity in ppt.

3

.Total Residual Chlorine in ppm.

ST. LUCRE PLANT UNIT NO. 1 CHEMICAL PARAMETERS TABLE 5 (cont.)

1977 NovEMBER Mong+

DISCHARGE REMARKS DAY 1 3 D. O. D.O. SALXNZ T. R.C.

8.15 6.4 34.2

'.12 34'. 3 0. 03 8.14 34.2 8.12" 34.4 8.12 34.2 6 8.15 34.2 8.'15 "

34.4 6.6 8.13 6.2 '4.2 0. 01 8.10 34.5 10 .8.10 34.0

8. 10 34.0 8.10 34.0 8.10 34.0

'4 8.10 33.8 7.0 8.10 7.0 33.5 16 8.15 35.0 0.04 17 18 8.14 35.2 19 8.16 35.5 20 8.12 35.1 8.12 35.4 22 6.6 8.12 6.25 35.5 0.02 23 8.13 35.3 24 8.12 35.2 25 8.12 35.4 26 8.10 34.8 27 8.11 35.0 28 8.10 33.8 29 6.2 8.20 6.0 34. 0 0.03 8.15 34. 5 31 NOTES':

Dissolved Oxygen in ppm.

Salinity in ppt.

3 Total Residual Chlorine in ppm.

, ST. LUCIE PLANT UNIT NO- 1 CHEMICAL.'PAKQIETERS

'TABLE,5, DEM~ER 1977':. Mp>gg INTAKE 'ISCHARGE REMARKS DAY '1 SALZNITL, T.R C. 3, 2

D.O D.O.

8. 10 34.5" 8.05 34. 0 8.10 34.1 8..15 34. 2 8.18 34. 0 "7 6.4 8.12 6.2 35.0, , 0.03 6

9 8.20 35.5 10 8.19 35.0 8.20 35.

8.25 35.50'4 6.8 '.25 6.8 ,

34.5 '0.04

~ 15 8.20 35.0 8.20 35.0 8.21- 35. 0-18 8.20 35.2 19 8.10 34.5

'20 6.8 8.18 7.0 35. 0

'8.10 34. 5 0..04 22 8.25 34.0 23 24 8.20 34.

25- 8.21 34. 7 26 8.20 34. 5 27 8.'20 34.0 0.04 28 6.7 8.20 7.0 35.0 8.20 35.0 29'1

'.20 35.0 8.05 34.5 NOTES:

Dissolved .Oxygen in ppm.

P Salinity, in ppt.

3.

.Total Residua3. Chlorine in ppm.

C

TABLE 6 ST. LUCIE PLANT UNIT NO. 1 HEAVY l1ETALS A. INTME ZEAR 1977 ARSENZC1 HROMZUP COPPER IRON ~ LEAD 2 MERCURY2 NICKLE I 2

<.001 <0- 02 <0. 02 0. 32 <0. 05

<.001 2-28-77 .02 <0.

4-1-77 <0.02 (0.02 <0.02 <0.05 <0.0002 <0.02 0. 7 4-29-77 <0.02 <0.02 <0.02 < . 5

<.002 6-30-77 <.002 <0.02 <0.02 <0.02 0. 05 8-1-77 0. 010 <0. 02 <0.02 <0. 02 0. 05 8-30-77 <.002, Q2 9-30-77 <.002 P

1-29-77 < 0.02 0. 02 0.08 0. 05 <0.0002 < .02 B. DISCHARGE ARSENIC CHROMZ COPPER2 IRON 2 LEAD MERCURY> NICK 1-4-77 <.OOl <0.02 <0.02 0.2 1-31-77 <. 001 <0.02 <0.02 0.14 <0.05 <0.0 02 <0.02 0.07 2-28-77 <.Qpl <0. 02 <0. 02 0. 03 <0. 05 (0.0002 (0.02 0.12 4-1-77 <. 001 <0.02 <0'. 02 <0.02 <0.05 .0 <0. 0.

4-29-77 <. 001 <0.02 <0.02 0. 8 5-31-77 <. O02 6-30-77 <. 002 <0.02 <0.02 .02 8-1-77 <. 002 <0. 02 8-30-77 <. p <0.02 <0.02 0.12 <0. 05 <0.0002 <0.02 0. 05 9-30-77 <. 002 10-31-77 <. 0.03 002'1-29-77

<0.02 <0. 02 0. 16 <0.05 <0.0002 <0.02 0.03 NOTE: 1 Results in PPM 2 Results in mg/L

TABLE 7 FLORIDA POWER & LIGHT COMPANY ST LUCIE PLANT CHLORINATION 1977 INJECTION

• CL2 RESIDUAL CL2 RESIDUAL, MONTH RATE. WATERBOX DISCHARGE CANAL TERMINUS 1st week 104 lb/hr .02 PPM 2nd week 104'b/hr .005 PPM

'rd week 104 lb/hr 104 lb/hr 0.8 PPM .02 PPM 4th week 1.1 PPM .02 PPM Feb 1st week 104 lb/hr .02 PPM 2nd week 104 lb/hr .02 PPM 3rd week 104 1b/hr 1.9 PPM .02 PPM ~

4th week 62.5 lb/hr .02 PPM 1st veek 62. 5 .02 PPM 2nd veek 62.5 lb/hr .02 PPM 3rd veek 62.5 lb/hr .02 PPM 4th week 62'5 lb/hr 0.8 PPM .02 PPM 5th week 62.5 lb/hr .04. PPM April 1st week 62.5 lb/hr .02 PPH 2nd veek 62.5 lb/hr .015 PPH 3rd week 62.5 lb/hr .02 PPM 4th week 50 lb/hr 1;1 PPM .02 PPM May 1st week 62.5 lb/hr .025 PPM

'nd week 50 lb/hr .03 PPH

~ 3rd week 62.5 lb/hr .05 PPH 4th week 50 lb/hr 1.1 PPM .04 PPM June, 1st week 33.3 lb/hr .03 PPH 2nd week 62.5 lb/hr .04 PPH 3rd week 62.5 lb/hr .03 PPH 4th week 62.5 lb/hr 1.0 PPM .03 PPH 5th week 62.5 lb/hr .035 PPM July- 1st week 62.5 lb/hr .03 PPM 2nd week 62-5 lb/hr. .02 PPH 3rd week 62.5 .03 PPM lb/hr lb/hr'2-5 4th week 1.0 PPM .04 PPM Aug 1st week'nd 62.5 lb/hr .06 PPM week 62.5 lb/hr .02 PPH 3rd week 62.5 lb/hr .08 PPM 4th week 104 lb/hr ', .02 PPM 5th week 83.3 lb/hr 0.9 PPM .01 PPM Sept 1st week 62.5 lb/hr .04 PPM 2nd week 62.5 lb/hr .04 PPH 3rd week 62.5 lb/hr 01 PPH 4th week SHUTDOWN

• Chlorine injection is normally 1 hr & 20 minutes 'per day with a 20 minute purge.

I, ~

V~LE 7 (Cont)

FLORIDA POWER 6 LIGHT COMPANY ST. LUCIE PLANT CHLORINATION -'977

,r' INJECTION., *, CL2,RESIDUAL CL2 RESIDUAL MONTH RATE WATERBOX'ISCHARGE CANAL TER ENUS Oct 1st week DOWN 2nd week 62;5 lb/hr 0.5 PPM .01 PPM week'HUT 3rd week 62.5 lb/hr .02 PPM 4th 62.5 lb/hr .01 PPM

,'- Nov 1st week 62.5 lb/hr .03 PPM .

,2nd week 83.3 lb/hr 0.7, PPM ,.01'PPM 3rd week 83.3 lb/hr .04 PPM 4th week 83.3 lb/hr .02 PPM 5th week 83.3 lb/hr .03 PPM Dec . 1st week 83.3 lb/hr .03 PPM 2nd week 83.3 lb/hr 0.5 PPM .04 PPM 3rd week; 104 lb/hr .04 PPM 4th week 104 -

lb/hr .04 PPM .

• Chlorine injection is normally '1 hr a 20 minutes per day with' 20 minute purge.

~~

'h N,

'1 I