ML20029D250

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Annual Environ Operating Rept CY93,including pre-operational Infrared Photographs Obtained in 1983 & 1984 & Aerial Overflight Photography Vegatative Remote Sensing Index of Photographs,Dtd 930923.W/940425 Ltr
ML20029D250
Person / Time
Site: Catawba  Duke Energy icon.png
Issue date: 12/31/1993
From: Rehn D
DUKE POWER CO.
To:
NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
NUDOCS 9405040318
Download: ML20029D250 (138)


Text

{{#Wiki_filter:7 11 l DukeIbwer Company DLRLm Catawba & clear Generanon Department Vice President 4800 ConcordRoad (80318313305 Office York, SC29745 (803)S313426 Far , DUKEPOWER April 25,1994 U. S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555

Subject:

Catawba Nuclear Station Docket Nos. 50-413 and 50-414 Annual Environmental Operating Report Calendar Year 1993 Attached is the 1993 Annual Environmental Operating Report which is required by the Environmental Protection Plan (Appendix 13 to the Catawba Facility Operating License). The report consists of the following enclosures: Enclosure I " Summaries and Analysis of Results of Activities Required by the Environmental Protection Plan (EPP)", and Enclosure II " Final Report On The Effects Of Cooling Tower Drift On Vegetation At Catawba Nuclear Station", and Enclosure III " Copy of Non-routine Event Reports Sent to the South Carolina Department of Health and Environmental Control" Very truly yours 4 Ig U /s (/ - D. L. Rehn Attachment JTH/AEOR 1993 , S y c o Lw. u.. A, b. , I 9405040318 931231 PDR ADOCK 05000413 R ( PDR m., o,n an.o,,

7 U. S. Nuclear Regulatory Commission April 25,1994 Page 2 xc w/o attachment: S. D. Ebneter Regional Administrator, Region II R. J. Freudenberger Senior Resident Inspector R. E. Martin, ONRR I l 1 1

l l l i l I U. S. Nuclear Regulatory Commission April 25,1994 Page 3 i bxc w/o attachment: C. T. Peed Z. L. Taylor J. S. Carter ) ELL - EC050 Group File: 801.01 Catawba Document Control: 801.01 1 1 l i 1 l 1

a / 4 ENCLOSUREI Summaries and Analysis of Results of Activities  : Required by the Environmental Protection Plan (EPP) { s A 3 4

Summaries and Analysis of Results of Activities Reauired by the Environmental Protection Plan (EPP) Section 4.2.1 - Aerial Remote Sensing Pre-operational infrared photographs were obtained in 1983 and 1984. Operational data was obtained again in 1985,1986,1987,1990,1991, and 1993. The report is included as Enclosure II and the photographs as Attachment A. Monitoring in 1993 revealed chlorine damage to both coniferous and deciduous trees within one hundred seventy five (175)  : meters of the cooling tower yard. All damage is restricted to this area of the plant site and I does not extend beyond the site boundary. This monitoring and report completes the requirements of the EPP Section 4.2.1 - Aerial Remote Sensing. Section 5.4.l(1)- EPP Non-Compliance and Corrective Actions No noncompliance's of the EPP for Catawba Nuclear Site in 1993. Section 5.4.l(2)- Changes in Station Design or Operation Tests, and Experiments Which Involve a Potentially Significant Unreviewed Ouestion No station changes were identified that involved a potentially significant unreviewed environmental question. j Section 5.4.1(3)- Non-routine Reports Submitted in Accordance with Subsection 5.4.2 of the EPP A copy of all items listed is included in Enclosure 111.

1. A request to conduct a test using sodium bromide as a treatment chemical in the cooling towers was submitted May 27,1993. ,
2. A request to conduct a test using a floating aerator in the sanitaiy waste system was submitted June 1,1993.
3. Approval to discharge Clam-Trol I was received from South Carolina Department of Health and Environmental Control (SCDHEC) June 8,1993.
4. A report documenting the release of Clam-Trol 1 above permitted levels was submitted July 20,1993.

___i

5. Approval to modify the sanitary waste treatment system to remove chlorine prior to discharge to Lake Wylie was received from SCDlIEC June 28,1993.

6 A Toxicity Evaluation Plan was submitted to SCDIIEC July 28,1993 in response to a test failure which occurred April 4,1993.

7. A request to drain the site cooling towers to the yard drain system was subm; .r.1 August 31,1993.
8. A request to use sodium molybdate as a maintenance chemical in closed cooling systems was submitted August 31,1993.
9. A request to reduce the frequency for toxicity testing from monthly to quarterly was submitted September 30,1993.
10. Approval to reduce the frequency for toxicity testing from monthly to quarterly was received from SCDHEC November 5,1993.

1 i l 1. A Toxicity Evaluation Plan was submitted to SCDlIEC November 19,1993 in response to a test failure which occurred October 4,1993.

12. Approval to use sodium molybdate as a corrosion inhibitor was received from SCDIIEC November 22,1993.
13. A request to perform a chemical metal cleaning on the Unit 2 steam generators was submitted December 28,1993.
14. Approval to perform a chemical metal cleaning was received from SCDIIEC February 16, 1994.
15. An additional request to use sodium bromide as a maintenance chemical in the cooling l towers was submitted April 20,1994.

l l t i

Section 5.4,l(4)- NPDES Reports Related to Matters identified in Section 2.1 of the EPP

1. Discharge Monitoring Reports Submitted to SCDHEC Date Submitted Period Covered February 26,1993 January,1993 March 26,1993 February,1993 April 28,1993 March,1993 May 28,1993 April,1993 June 28,1993 May,1993 July 28,1993 June,1993 August 27,1993 July,1993 September 28,1993 August,1993 September 28,1993 July,1993 (Amended)

October 28,1993 September,1993 November 29,1993 October,1993 December 28,1993 November,1993 January 28,1994 December,1993

1 i l l l ENCLOSUREII Final Report On Tlic Effects Of Cooling Tower Drift On Vegetation At Catawba Nuclear Station I l l l

l l FINAL REPORT ON THE EFFECTS OF COOLING TOWER DRIFT ON VEGETATION AT CATAWBA NUCLEAR STATION INTRODUCTION The Catawba Nuclear Station Non-Radiological Environmental Protection Plan requires that the Catawba site be monitored for possible effects of cooling tower dria on vegetation. This monitoring began the first September following operation of Unit I and encompassed a 9-year period from the time Unit 1 began operating. Unit 1 generation began in January 1985; Unit 2 generation began in July 1986. This report describes the final results of the monitoring program and satisfies the requirements of the operating license in regard to the effects of cooling tower driR on terrestrial vegetation. The Catawba Environmental Report (ER) indicated that the area within the NE and SW sectors approximately 300 m from the center of the cooling tower yard would receive maximum drift deposition. Total dissolved solids (TDS) in the drift were projected to be in the range of 350 to 500 mg/1, based on the influent makeup water TDS of 60 mg/l and 1 an operating range of 7 to 10 cycles of concentration. l Drift deposition rate calculations in the Catawba ER predicted total solids deposition rates of 2-3 kg/ha/ month (2-3 lb/ acre / month) based on 350 to 500 mg/l of TDS in drift. The

  • j l Catawba Final Environmental Statement indicated that thresholds for visible leaf damage l in sensitive plants fall in the range of 10 to 20 kg/ha/ month (9-18 lb/ acre / month). Since i the predicted solids deposition rates at the Catawba site were less than the vegetative j l thresholds by factors of approximately 3- to 10-fold, drift from the Catawba cooling '

towers was not expected to result in adverse impacts on site vegetation within or beyond , the cooling tower yard or plant boundaries. l l

 .With current operating conditions, the actual concentration of TDS in cooling water typically ranges from 60 to 400 mg/1. On average, less than 3 cycles of concentrations are reached in cooling water before more makeup water is added.

Sodium hypochlorite, organic biocides, and dispersants have been periodically used to treat cooling water in the past. Current procedures rely on a dispersant (Calgon PCL-4000) and sodium hypochlorite treatments which attain a concentration of about 0.5 mg/l of chlorine in the cooling water. These treatments occur on alternate days during summer and twice per week during winter. METIIODS The condition of Catawba Nuclear Station site vegetation has been monitored by color infrared (IR) aerial photography, supplemented by annual ground level visual inspection of l site vegetation, since 1983. Aerial photography was performed in September 1983 and 1984 (preoperational), in September 1986 (first operational growing season for both units), in September 1987 (second operational growing season), in January 1990 (due to Hurricane Hugo), September 1991 (fiflh operational growing season), and in September 1993 (seventh operational growing season). Ground level observations were made to i

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support aerial photography. Conclusions based on inspections of the IR photographs and ground level observations through 1991 were presented in the Catawba 1991 Annual Environmental Operating Report. The present report summarizes all information collected l with emphasis on data collected from 1992-94. Aerial IR photography was obtained using Kodak IR Type 2443 film at 1:6000 (1 in = 500  ; R) scale on 6 September 1983, on 2 September 1984, on 14 September 1986, on 23 I September 1987, on 3 January 1990, on 14 September 1991, and on 23 September 1993. I Vegetation shown in the photographs within a radius of approximately I km of the cooling ) tower yard was inspected for evidence of dead or damaged foliage and compared with photographs remote from the plant. Photographs were interpreted using Murtha (1972, 1984) as a guide. Intensive field inspections were performed on 26 March 1992,12 May ) 1992,10 and 17 September 1992,15 July 1993, and 10 January 1994, for preparing this ) final report. RESULTS AND DISCUSSION Forested areas located within 1 km of the towers consist of mixed pine-hardwoods, loblolly pine plantations, mixed shortleaf-Virginia pine stands, and mixed hardwoods.

                                                                                                        )

j These stands are described in Duke Power (1975).

                                                                                              ~

Analysis of the 1993 IR photography revealed no vegetation ancmalies that could be attributed to operation of the cooling towers. Small openings in the forest canopies, individual tree mortalities, and vegetation discoloration were apparent inside the study area and at areas remote from the plant. Color variations were primarily associated with premature leaf senescence in some deciduous trees (primarily tulip poplar) due to drought conditions. As discussed later, the primary sign of vegetation stress from cooling tower drift that was present at the time of the photography was thin crowns of pines and leaf anomalies on deciduous trees. This could not be distinguished in the photographs. i Ground inspection of vegetation in the 1-kilometer study area revealed several types of vegetation damage:

  . Needle-tip necrosis associated with cooling tower drift.                                          !
  . Cupped, flecked, and necrotic leaves associated with exposure to cooling tower drift.
  . Pine and deciduous tree mortality attributed to exposure to cooling tower drift.
  . Pine mortalities caused by Southern pine beetles.
  . Remnants of damage from Hurricane Hugo.                                                           j
  . Pine tip moth damage to the apical stem of young pines.                                           I 1

1 Needle-tip necrosis or " needle scorch" was observed on loblolly pines in 1987 on the north l side of the cooling towers and at a distance of about 60 m from the edge of the towers. l This condition was only apparent on pines closest to the towers, and new growth did not exhibit these signs. Newly formed needles of these trees examined later in the growing season were healthy. In 1991, needle scorch was observed in all yellow pines (loblolly, Virginia, and shortleaf) and eastern red cedar in areas bordering the cooling tower yard. Browning of about one-half of the terminal portion of the needle and the terminal 2 l

vegetation of cedars was observed on trees that were within 150 m of the edge of the - closest tower. Conifers on the north to northeast side of the towers were largely affected, whereas trees immediately behind them that did not occupy the canopy or were in the sheltered understory did not normally exhibit signs. In March 1992, needle-tip necrosis was again observed on the majority ofloblolly pines, and to a lesser extent on Virginia and shortleaf pines. Necrosis was widespread on pines within 150 meters of the edge of the towers (Figure 1). By May 1992, needle cast had prematurely begun, and some of necrotic vegetation was gone; new vegetauon was healthy. In September, the needles of pines appeared healthy with only rare signs of necrosis. The crowns of affected pines appeared thin due to the premature casting of needles. Recent pine mortality was evident within the 150 meter affected area; some were attributable to Southem pine beetles and some were attributable to cooling tower drift. Many pines within the 150 meter area appeared very healthy, especially young pines which were screened from drift by taller vegetation. No signs of thin crowns or necrosis was apparent outside of175 m of the edge of the cooling towers. This same cycle appeared in field inspections in July 1993 and January 1994. It is concluded that pines within the immediate area of the towers that are directly exposed to drin experience needle-tip necrosis after being exposed to drift for one growing season. This results in premature casting of needles. Needle-tip necrosis apparently results from translocation of chlorine to , the tip of the needle where the greatest injury is manifested. Necrosis varies annually, probably based on weather conditions and plant operating characteristics. USEPA (1978) , indicates that high soil moisture conditions may exacerbate symptoms. Effects to pines l outside the 175 m area is not apparent, probably due to dispersal of the plume. Pine  ; regeneration within the affected area is abundant, and mortalities to all but very mature  ; pines is not apparent. Vegetation of deciduous trees within 150 m of the cooling towers is experiencing damage (Figure 1), apparently due to chlorine. The damage results in thin crowns, mortality, and anomalous vegetation. Deciduous vegetation was cupped due to stress during leaf growth, exhibited marginal necrosis because of translocation of chlorine to the margins, and was flecked on the upper-leaf surface apparently resulting from chronic chlorine exposure. The species common in this area are white oak, post oak, Southern red oak, water oak, sweetgum, winged elm, black gum, dogwood, and tulip popular. Mortality is uncommon and is restricted to an area within 100 m of the edge of the cooling towers. All of the above-mentioned symptoms were only observed in the 100 m area next to the towers; deciduous vegetation outside this area is healthy. Damage to coniferous and deciduous vegetation is characteristic of chlorine damage l (USEPA 1978). Site vegetation has experienced drift from full two-unit operation since the 1987 growing season, except during outages (Tables 3,4, 5, and 6). Operation of cooling towers began in January 1985 (Tables 1 and 2). It is hypothesized that vegetation

xposure to the cooling tower plume results in the observed vegetation damage, as vegetation screened from the plume is unaffected.

3

l l Southern pine beetle mortalities are common throughout the Piedmont of South Carolina. It is not uncommon to see small pockets of dead or dying yellow pines (loblolly, shortleaf, and Virginia pines) resulting from infestations of Southern pine beetles. In 1987, a large stand of mature yellow pines on the eastern perimeter of the 1-km study area suffered extensive mortalities. This area was subsequently logged to control the infestation and to salvage the timber. It is extremely unlikely that this infestation was associated with cooling tower drift. The stand was remote from the cooling towers, while other mature stands, which experienced little or no infestation of Southern pine beetles, exist within 300 m of the cooling towers. Some mature pines within 150 m from the cooling towers continue to experience limited mortality from Southern pine beetle, but no widespread infestation has occurred. The majority of these occurred following Hurricane Hugo and the drought of 1986. It is unlikely that there is a relationship between Southern pine beetle infestations and cooling tower drift In September 1989, Hurricane Hugo passed through the study area, leaving up-rooted, crown-damaged, and trunk-broken yellow pines and deciduous trees. Snags and broken trunks remain from this damage, leaving open canopies with an abundance of regeneration in the understory. In 1990, insect damage to the main apical twigs of young pines was observed in an area to , the southeast (100-370 m from the cooling towers), and to a lesser extent in the north (400-600 m). The cause of this damage is believed to be pine tip moth which rarely kills young pines, but causes the injured tree to be crooked and loose height growth. Young pines eventually outgrow the attacks when they attain a height of about 6 m. The prevalence of the infestation appeared to be about 5% in 1992-93, a significant decrease from 1990 when the prevalence appeared to be about 90%. The pines in the area are now approaching the height where they are no longer susceptible to infestations. While these areas are not sheltered from cooling tower drift, it is postulated that the infestation is unrelated to cooling tower drift. Young pines are abundant throughout the study area and the pine tip moth was present in only two areas, both occurring on poor soils of a spoil area and a construction staging area. Signs of cooling tower drift damage were rarely observed in the areas of pine tip moth infestation. CONCLUSIONS Damage to coniferous and deciduous trees that is symptomatic of chlorine damage is restricted to the land immediately adjacent to the cooling towers. After eight growing seasons, since the cooling towers have operated (nine years of two-unit operation), it is clear that the vegetation impacts of cooling tower drift are restricted to an area 175 m from the cooling towers. 4

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v DQt g '7,gf 7',4,; /;;' w 4 $ ..//[' FIGURE 1. CATAWDA NUCLEAR STATION p fm a- , 2 s COOLING TOWERS AND AREAS OF

                                                                                                                                                                 ~

_ , AFFECTED V EG ET A TION FROM

                               .r,t . cr . m . m a . .                                                                           ,

COOLING TOWER DRIFT. j l b

1 l i Table 1. Evaporative losses for Catawba Nuclear Station cooling towers,1985 (millions of gallons, MG). MONTH UNIT 1. MG January 26.64 February 32.58 March 247.09 I April 215.71 May 0.19 June 160.87 July 459.48 August 548.03 September 563.83 . October 240.42 November 108.54 1 December 427.60 l SS61.MSW 6

l Table 2. Evaporative losses for Catawba Nuclear Station cooling towers,1986 (millions of gallons, MG). MONTH UNIT 1. MG UNIT 2. MQ January 455.1 February 518.4 March 462.1 April 524.1 May 492.9 June 97.1 July 322.0 48.2 August 71.2 395.2 September 0.0 0.0 l October 0.0 0.0 ( November 159.0 149.0 l December 547.4 620.0 l l I i SS61.MSW 7 l

.            ....   . .               .                    - . . = . .        . . _ .           .-           . . _ _ _-

Table 3. Evaporative losses for Catawba Nuclear Station cooling towers,1987 (millions of gallons, MG). MONTH UNIT 1. MG UNIT 2. MG January 407.1 539.6 February 512.5 441.4 March 294.0 468.9 April 530.1 359.5 May 502.0 575.3 June 550.2 627.2 July 435.5 600.8 August 502.5 179.5 September 554.6 471.9 , October 13.2 665.8 November 1.8 501.7 December 6.6 317.6 SS61.MSW 8

         -,,            +a        -     - - .      - - . -             .__, ,                   . , - , .,

-- . .. - - ... - - . =. . . - . - . . - . . . . . - - _- .. - - . I Table 4. Evaporative losses for Catawba Nuclear Station cooling towers,1988 (millions of gallons, MG). MONT11 UNIT 1. MG UNIT 2. MG January 296.3 0.0 February 478.5 31.3 Man:h 450.7 233.3 i April 554.6 435.4 May 566.2 481.9 June 552.3 477.4 July 568.7 494.9 August 122.5 640.0 September 536.5 515.1 October 573.1 631.9 November 356.5 511.3 December 0.0 649.0 l SS61.MSW 9

                                                                                                                                                                 )

i

Table 5. . Evaporative losses for Catawba Nuclear Station Cooling Towers, 1989-1991 (millions of gallons, MG). Unit 1. MG Unit 2. MG Month 1989 1990 1991 1989 1990 1991 Jan 3.1 434.0 330.1 538.1 569.5 538.5 Feb 309.4 0.0 493.6 502.8 583.1 593.7 Mar 503.2 6.7 232.0 97.7 652.6 657.3 Apr 449.5 37.0 0.0 17.1 624.8 460.3 May 573.1 575.4 1.9 46.6 640.9 613.1 Jun 449.9 296.9 171.1 318.5 113.4 559.1 Jul 580.1 580.1 513.4 655.7 0.0 582.4 Aug 566.1 575.4 603.5 631.6 37.5 608.2 ' Sep 525.1 552.3 530.8 593.2 59.3 352.2 , Oct 499.1 480.6 573.1 610.5 601.1 205.3 Nov 347.4 554.6 565.9 606.9 636.1 0.0 Dec 551.3 582.4 528.6 631.6 648.9 94.8 1 l SS61.MSW 10

Table 6. Evaporative losses for Catawba Nuclear Station Cooling Towers,1992 and 1993 (millions of gallons, MG). , UNIT 1, MG UNIT 2, MG MONTH 1222 1921 1922 1921 JANUARY 589.5 570.8 619.5 663.9 FEBRUARY 547.1 507.1 601.8 1.0 MARCH 559.1 544.9 673.7 22.4 APRIL 575.0 534.2 651.9 613.0 MAY 589.5 566.1 694.7 671.3 JUNE 565.9 279.8 647.4 656.5 JULY 171.3 494.5 665.6 666.7 AUGUST -5.8 612.9 666.7 680.7 SEIrrEMBER -17.0 579.5 550.6 600.4 OCIOBER 95.6 559.1 609.0 692.4 , NOVEMBER 536.5 0.0 364.8 665.5 DECEMBER 545.6 12.6 570.6 697.1 SS61.MSW 11

REFERENCES Duke Power Company.1975. Catawba Nuclear Station Terrestrial Studies (Submitted to U.S. Atomic Energy Commission Directorate of Licensing, January 31, 1975). U.S. Environmental Protection Agency.1978. Diagnosing Vegetation Injury Caused by Air Pollution. USEPA - 450/3-78-005, Research Triangle Park, NC. Murtha, P. A.1972. A Guide to Air Photo Interpretation of Forest Damage in Canada. Canadian Forestry Service Publication No.1292. Canadian Forestry Service, Ottawa. 62 pp. Murtha, P. A.1984. Vegetation Damage Detection and Assessment: The Photographic Approach. Pp. 337-354 in: Renewable Management Application of Remote Sensing. Proceedings of the RNRF Symposium on the Application of Remote Sensing to Resource Management, Seattle, Washington, American Society of Photogrammetry, Falls Church, VA. 4 SS61.MSW 12 l

I i I ENCLOSURE III I Copy of Non-routine Event Reports Sent to tiie South Carolina Department of ficalth and Environmental Control l l l

ll l l Duke Ibwer Company Generation Services Department 13339 Hagers Ferry Road Huntersedle, NC28078 7929 f . DUKEPOWER May 27, 1993 4 1 To: Mr. Timothy Eleazer Division of Industrial & Agricultural Wastewater

;                Bureau of Water Pollution Control South Carolina Department of Health i                   and Environmental Control 2

2600 Bull Street Columbia, SC 29201

]

Subject:

Catawba Nuclear Station NPDES Permit No. SC0004278 Notification of Maintenance Chemical Use l File: CN-702.13 *

Dear Mr. Eleazer:

With reference to our recent telephone conversation, Duke Power Company (DPC) requests permission to begin this summer on a trial basis the use of sodium bromide at the subject facility. Catawba Nuclear Station is a two unit steam electric' generating station, with each unit having a cooling tower system. One of the primary maintenance activities for the cooling towers is the control of biological growth. . Historically, the biological growth has been greatest in the warmer months. During this trial period DPC proposes . l that sodium bromide will be used in one unit with the results of its effectiveness being compared to the other unit. At present the biological growth is treated by the use of sodium hypochlorite. However sodium hypochlorite is not as effective when the water pH increases above 8 Standard Units. Thus the addition of sulfuric acid is needed to readjust the pH. Sodium bromide is effective in higher pH water. By using approximately 100 gallons of 40 to 46 % liquid sodium bromide solution (normally every two days) of ;;di_; tremide it is anticipated that the current sodium hypochlorite dose will be reduced to more than half of its present dose requirements and also the need for sulfuric acid should almost be completely eliminated. n.m w , awe na

l l l Page 2 of I In order to evaluate this product it is advantageous to begin its usage during the warmer months. Attached are the items as required by the subject permit Part III Item 9. We apologize for requesting this approval in such a short time, however we think that the proposed restrictions (Attachment 1) will j ensure that the environment is adequately protected. i j Please advise if you need additional information. You may contact me at (704) 875-5970. If possible DPC would like to begin using this product by July 1, 1993. Your cooperation is appreciated. Sincerely,

      'p   ,

Robert R. Wyl'ie, Engineer Environmental Division Generation Services Department cc: NRC Distribution  ; 1 l

ATTACEMENT 1 CATAWBA NUCLEAR STATION PROPOSED SODIUM BROMIDE USAGE MAY 27, 1993 NPDES PERMIT SC0004278 PART III ITEM 9 REQUIREMENTS

1) NAME AND GENERAL COMPOSITION OF THE MAINTENANCE CHEMICAL a) Liquid Sodium Bromide (40 to 46% solution)
2) QUANTITIES TO BE USED Approximtely 100 gallons of product.
2) FREQUENCY OF USE Every two days.
4) PROPOSED DISCHARGE CONCENTRATION Since chlorine and bromide are both oxidants it is proposed that I

the current limits on Outfall 005 of 0.2 mg/l monthly average and 0.5 mg/l daily maximum for Free Available Chlorine be changed to Free Available Oxidant. (Outfall 005 is an internal outfall that discharges upstream of Outfall 001. Flow through Outfall 001 typically allows for an approximate 9 to 1 dilution ratio.)

5) EPA REGISTRATION NUMBER The EPA Registration Number for one of the sodium bromide products under evaluation is 1706-168. Once the actual manuf acturer/ supplier is selected an update can be provided if needed.
6) AQUATIC TOXICITY INFORMATION a) SODIUM BROMIDE 96 hour static acute LC 50 to Fathead Minnow = 16,479 ppm.

96 hour static acute LC 50 to Poecilia reticulata = 225 ppm. 48 hour static acute LC 50 to Daphnia magna = 7,900 ppm. b) HYPOBROMOUS ACID (acid generated from Sodium Bromide) 96 hour static acute LC50 to Bluegill Sunfish = 0.52 ppm (as Br2) 96 hour NOEC for Bluegill Sunfish is 0.30 ppm based on' no mortality. 48 hour static acute LC50 to Daphnia Magna = 0.71 ppm (as Br2) 48 hour NOEC for Daphnia magna is 0.41 ppm based on no mortality. _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ ~ _ _ __ . --~ ,- -

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11- ~ l Duke her Company Generation Services Department 13339 Hagers Ferry Road Huntersedle, NC23078 7929 DUKEPOWER June 1, 1993 South Carolina Department of Health and Environmental Control Attn: Mr. Timothy M. Eleazar Industrial and Agricultural Wastewater 2600 Bull Street Columbia, SC 29201 Re': Duke Power Company Catawba Nuclear Station Floating Aerator Test for Sanitary Treatment System File: CS-0702.13

Dear Mr. Eleazar:

Catawba Nuclear Station (NPDES Permit #SC0004278) currently treats its sanitary wastes in a 4 cell lagoon aearated through perforated .. headers on the bottoms of the cells. The station, desiring to improve performance and increase treatment efficiency, is considering replacing. this system with one of ' floating aerator units. Before we pursue such a change, we would like to perform a test on the first of the four cells. This test would involve floating a 1 to 2 horsepower aerator in the cell and turning off the air to the perforated header in that cell. This test would be performed in the July or August time frame and would last no longer than 6 weeks. If this test is successful, we will-pursue formal approval to permanently replace the system of perforated headers with floating aeartors. For your review, a layout of.the lagoon with Cell 1 designated for the aerator test is included, as well as manufacturer's information on the floating aerator to be used. Your prompt consideration of our request to perform this test would be greatly appreciated. If you have any questions or need further information, please contact me at (704) 875-5966. Sincerely, r N Timothy L. Huf man, PE GSD Environmental Division attachments cc w/o att: J.S. Carter, R.R. Wylie, M. A. Lascara, ggAged G.W. Sain, P.W. Downing, File a - w,-

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          ,__                                                                              s.nar.;ua 2000 Butt street, cokansa, sc 2e201     Promoang Healtts. Prorecung the Ennronment June 28, 1993 Q3 g gg O TlCKLER        DATE Mr. Timothy L. Huffman, P.E.

Duke Power Company O CO?Y _ ,, Generation Services Department . 13339 Hagers Ferry Road - - - ~ . . Huntersville, N.C. 28078-7929 O ROUTE _ , 4 Re: Floating Aerator Test for - Sanitary Treatment System Duke Power Co./ Catawba Nuclear Station York County

Dear Mr. Huffman:

Our Office has received your June 1,1993 letter requesting approval to conduct a floating aerator test in cell 1 of the existing four (4) cell aerated sanitary lagoon system at the Duke Power Company Catawba Nuclear Station in York County. We understand this test will involve floating a 1 to 2 horsepower aerator in the first of the four cells, and that the air to the perforated header for this cell will be tumed off. The aeration of the other three cells will not be changed. Based on a review of the information provided, our Office approves your request with the following conditions:

1) The floating aerator test is approved for a period of six (6) weeks.
2) Please contact our District Office at (803)285-7461 in regards to the specific start date of the test.

If you should have any questions, please call me at (803)734-5247. Sincerely, c/ W-Timothy M. Eleazer Environmental Engineer Associate Industrial and Agricultural Wastewater Division THE/ebs cc: Al Williams, Catawba EQC O .uwaao,o ,

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Ya$N asco sus su.a. cuunus, oc sesot  % *sm m eesw ree w dune 8.1993 Mr. Robert R. Wylie, Engineer Environmental Division Duke Power Company 13339 Hagers Ierry Road Huntersville, N.C. 28078-7929 Re: Biocide: Betz Clam-Trol CT-1 Approval Duke Power Co./ Catawba Nuclear Station York County

Dear Mr. Wylie:

Our OfTice has received your March 4,1993 letter concerning the use of the Betz biocide Clam 1rol C1-1 at the Duke Power Company Catawba Nuclear Station in York County. lhe data supplied by Betz Laboratories on the toxicity of Clam-Trol CT-1 to Ceriodaphnia dubia indicates that a 12-hour exposure to 0.40 mg/l is not toxic. Based on a review of the information provided, our Office approves your request to use the, biocide Clam 1rol at the Catawba Nuclear Station for Outfalls 001 and 002 with the following conditions:

1) The clam-Trol CT-1 shall be limited to a daily maximum of 0.40 mg/1, at least three (3) samples shall be taken during a 24-hour period when the Clam Trol CT 1 is expected to be present (detectable) in the outfalls.
2) lo ensure that the CT-1 has been datoxified from the discharge, Duke Power Company shall perform a 100% affluent three-brood pass / fail Ceriodaphnia dubia chronic toxicity test. Toxicity shall be limited to no statistically significant evidence at the 0.05 a level that the percentage of tests failed is greater than 5%. As has been discussed with Mr. Vernon Beaty, Water
  • Quality Monitoring Section, the toxicity test solutions will be allowed to be renewed daily with a new sample taken daily during the early part of the test. Renewing daily samples will make the test a better approximation to 01-1 that organisms in Lake Wylie will receive. The samples collected shall bc 24 hour composite samples. Also, a minimum of three (3) samples must be used, and all other U$ EPA and SCDHEC test protocols must be followed.

If you should have any questions, please call me at (803)734-5247. Sincerely, t:/Inw - h. Timothy M. Eleazer Environmental Engineer Associate THE/ebs Industrial and Agricultural Wastewater Division cc: Al Williams, Catawba ~EQC Vernon Beaty, Water Quality Monitoring .

Il I l Duke }%w Company D L Rt.m Catawba Nuclear Generatton Depamnent nce President 4800 Concord Road (803)83IJ203 office York,SC29745 (803)831JC6 Fax DUKEPOWER l June 23,1993 U. S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555

Subject:

Catawba Nuclear Station  ! Docket Nos. 50-413 and 50-414 Environmental Protection Plan Reporting i The Environmental Protection Plan ( Appendix B to the Catawba Facility Operating License) requires that changes to the NPDES Permit or State Certification be reported to the NRC within thirty (30) days following the date the change is approved. Attached please find approval for the discharge of Betz Clam-Trol 1 issued by the. South Carolina Department of Health and Environmental Control June 8,1993. Very truly yours D. L. Rehn Attachments JTH/EPP 1993 l l l Nferf Ce WWW Ayer

U. S. Nuclear Regulatory Commission June 23,1993 Page 2 xc: S. D. Ebneter Regional Administrator, Region II R. J. Freudenberger Senior Resident Inspector Catawba Nuclear Station f R. E. Martin, ONRR

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ll , I ( Duke 1%urr Company ' Generalwn Sernces Department 13339 llagers ferry Road fluntersalle. NC 28078 7929

   ,    DUKE POWER i

l l July 20, 1992 Mr. Robert Knauss Water Quality Assessment

and Enforcement Division South Carolina Department of Health and Environmental Control 2600 Bull Street Columbia, South Carolina 29201 l Subject Catawba Nuclear Station- NPDES Permit.#SC0004278 Exceedance of a Maintenance Limit File
CN-702.00, CN-702.15 -

Certified: P 623 739 359 l

Dear Mr. Knauss:

Pursuant to Part II B. 2. a. of the subject permit, this is a follow up written report for the recent exceedance at Catawba Nuclear Station. Verbal notifications'were made to you and also Mr. Lanny Robinson of the DHEC Catawba District by Mr. Gerry Parker of Duke Power Company on the morning of the exceedance (July 15, 1993). On June 8, 1993 Catawba Nuclear Station received permissi~on to use a blocide called Clam-trol with concentrations-at the outfall not to exceed a daily maximum of 0.40 mg/1. Several industries have used Clam-trol to control the populations of Corbicula (Asiatic Clams) in systems that use raw water from lakes and rivers. Clam-trol has five ingredients: N-alkyl dimethyl benzyl ammonium chloride, dodecylguanidine hydrochloride, isopropyl alcohol, ethyl alcohol, and ethylene glycol. The EPA registration number for Clam-trol is 3876-145. The injection of Clam-trol began on the afternoon of July 14, 1993 at 1655. A slurry of bentonite (clay) was being injected just p.or to discharge to detoxify the Clam-Trol. Duplicate samples of t..e discharge were being taken hourly and results averaged to verify the injection / detoxification process was working properly. At 0055 July 15th it was determined there would not be enough bentonite to complete the proposed 12 hour injection. ( q.4

                                                                      , -            --n , , - - - ,      g         - , - ,

l i Page 2 of 3 The Clam-Trol additions were halted at 0100 and tha bentonite injection continued in order to detoxify the remaining Clam-trol that was still in the system. It was believed at that time there was enough bentonite remaining to detoxify for an hour or more to make sure the system was thoroughly flushed free of Clam-Trol. At 0105 July 15th the concentration of Clam-Trol was averaged at 0.26 mg/1. The 0210 samples were 0.74 and 0.67 mg/l which exceeded the permitted limit of 0.4 mg/1. At this time the bentonite material had run out. At 0250 the samples indicated the concentration had returned to less than 0 2 mg/1. Therefore, for a certain time period between the hours of 0105 and 0250 the concentration of Clam-Trol exceeded the permitted level of 0.4 mg/1. The discharge area was inspected immediately after the  ; exceedance was determined with no adverse impacts being observed. Due to some surf actants contained in Clam-trol, some slight foaming was observed. Ef forts were made to control this by use of a defoamer ~which was approved for usage. Results of biomonitoring performed on a 24-hour composite sample - collected during the Clam-trol injection failed. A three-brood  ! Ceriodaphnia survival and reproduction test was initiated on Friday July 16, 1993 using a 24-hour composite sample. The composite sample was composed of hourly samples collected from 1800 July 14, 1993 until 1800 July 15, 1993. Following 24-hours of exposure to the composite sample, all of the Ceriodaphnia exposed to the effluent were dead, all 20 control animals were alive. I l A second 24 hour composite sample was collected from 1800 July 15th l to 1800 July 16th, 1993 from the same outfall. This sample was I intended for use as second day exposure solutions for the initial test began on July 16, 1993. However, the initial test was terminated af ter 24-hours, and is considered a failure based on EPA and SCDHEC criteria. One possible cause for the test failure is l the presense of bentonite clay in the sample. This and other factors are being investigated. The second sample was, however, used as a normal monthly NPDES sample. The initial results from our toxicity laboratory indicate that the second composite sample will pass the three-brood Ceriodaphnia survival and reproduction test. An investigation'has begun to determine why the bentonite slurry ran out prematurely. To prevent recurrence of this event, additional measures will be taken to ensure that the appropriate flow rate for the detox system exists and that a sufficient supply of bentonite material is on site.

k Page 3 of 3  ; If you have any questions concerning this matter or need additional information please contact either Robert Wylie at (704) 875-5970 or John Estridge at (704) 875-5965. Sincerely, 4 o . Carter, Technical System Manager Environmental Division, Water Protection l 4 I xc: Lanny Robinson, DHEC - Catawba District Timothy Eleazer, DHEC - Columbia Office U.S. Nuclear Regulatory Commission - Document Control Desk John Zieler - Catawba Nuclear Station, NRC Resident Inspector i f 4

                                                    --m -- -          _ , - . , . . .

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I Duke hwerCompany D L Cots Cann;ba Nuclear Genemnon Depanment Vice President + 4800 ConcordRoad (803)UiJ205 Omce York, SC29N5 (803)D10426 Tat DUKEPOWER July 26,1993 U. S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555

Subject:

Catawba Nuclear Station Docket Nos. 50-413 and 50-414 Environmental Protection Plan Reporting The Environmental Protection Plan (Appendix B to the Catawba Facility Operating License) requires that certain changes or modifications to the environmental treatment systems be reported to the NRC. Attached please find approval from the South Carolina Department of Health and Environmental Control to modify the Sanitary Waste system by constructing a system

  • to dechlorinate the effluent prior to release to Lake Wylie.

Very truly yours %[ G D. L. Rehn Attachments JTH/EPP 1993 e

   ~- m- -

l U. S. Nuclear Regulatory Commission l July 26,1993 l Page 2 . l l xc: S. D. Ebneter- . Regional Administrator, Region II 1 1 R. J. Freudenberger 1 Senior Resident Inspector j Catawba Nuclear Station l l t l R. E. Martin, ONRR j l l l l l e 1 i l l l l _ , _ i

lugne - ManasEtemA. onw===s a == se mie===en ce=* C Bessik Jelue44 SMIIIIE6chsmu m 8BE8IWW E Jabbour.DeeviesChahnen miteia seemsJr.assumy

                                                    **'"** * ** , su anemai.e WEbene E &amars= m, Tenor Grenent, A. WD aine. A weeneer a.nn a p.m un asco sus seen. commeda. sc seest                                                                                                      .

June 28, 1993 Y,b: l Mr. M.S. Tuckman, Vice President '

  • Duke Power Company * . _,

13339 Hagers Ferry Road Huntersville, N.C. 28078-7929 Re: Construction Permit #17,521-IW Duke Power Co./ Catawba Nuclear Station York County

Dear Sir:

Enclosed is a State Construction Permit for the above-referenced wastewater treatment facility. The conditions of the permit are explicitly stated: construction is to be performed in accordance with this permit and the supporting engineering report, plans and specifications approved by this Office.

                                                                                                                                                     ~

Your EQC District contact from this Department is Al William * (address below).J He, along with this Division of the SC Department of Health and Environmental Control, should be notified when construction ias begun and when the facility is ready for operation. A final inspection must be made before the treatment facility is placed in operation. At the time of this inspection, you must submit a letter from a registered engineer certifying that the construction has been completed in accordance with the approved plans and specifications.- In accordance with State Law, your facility will be required to have an operator-in-charge who has been certified by the SC Environmental Certification Board. Your facility has been classified in Group II-B , necessitating an operator holding a Grade _R:R_ or higher certificate. You will not be given permission to operate your facility untti a properly qualified operator (s) has been obtained. Questions in this matter should be directed to William R. Moore, SC Environmental Certification Board, 2221'Devine Street, Suite 320, Columbia, SC 29205. Sincerely, Address of District Engineer: t .C. 29714 Marion F. Sadler, Jr., Acting D rector Industrial & Agricultural MFS/TME/ebs Wastewater Division cc: Al Williams, Catawba EQC David Lee Ward, P.E. David R. Kulla, P.E.

          . Timothy L. Huffman, Duke Power Co.
O mwnwoam
                                                                                                       , . . , , - - .             .n w,               g ,--,n-   y. ~ - -

i Duke Power Co./ Catawba Nuclear Station fl7,521-IW l Page 2 I SPECIAL CONDITIONS 1 ! 1. This permit is in addition to Construction Permit #16,492, 14,260, 9,166,~ and 6,583.

2. The permittee shall maintain at the permitted facility a complete Operations j and Maintenance Manual for the waste treatment plant. The manual shall be j made available for on-site review during nonsal working hours. The manual shall contain operation and maintenance instructions for all equipment and
appurtenances associated with the waste treatment plant. The manual shall
contain a general description of the treatment process (es), operating

) characteristics that will produce maximum treatment efficiency 'and corrective action to be taken should operating difficulties be encountered. 1 3. The permittee shall modify and maintain a Best Management Practice (BMP) Plan to identify and control the discharge of significant amounts of oils and the hazardous and toxic substances listed in 40 CFR, Part 117 and Tables II and III of Appendix D to 40 CFR, Part 122. The plan shall include a listing.of all potential sources of spills or leaks of these materials, a i method of containment, a description of training, inspection and security - , procedures, and emergency response measures to be taken in the event of a 1

discharge to surface waters or plans and/or procedures which constitute an l
equivalent BMP. Sources of such discharges may include materials storage J l areas; in-plant transfer, process and materials handling areas; loading and .

1 unloading operations; plant site runoff; and sludge and disposal areas. The  !

BMP plan shall be updated in accordance with good engineering practices, j' shall be documented in narrative form, and shall include any necessary )
plot plans, drawings, or maps. The BMP plan shall be modified no later l than six months after issuance of the Construction Permit and any changes
implemented no later than one year after issuance of the Construction Permit. The BMP plan shall be maintained at the plant site and shall be j available for inspection by Department personnel.
4. All sludges, waste oil and solid and hazardous waste shall be properly disposed i of in accordance with the rules and regulations and specific, written approval j of the S.C. DHEC Bureau of Solid and Hazardous Waste Management.

i l . l l e 1 i 4

                                                    -                           -  ..m,,     -
                                                                                               -7,-.p. e

Benen ofWaterPoButton Control PennitTo Constreet 2000 bus Soest r ah* SC 28301 Duke Power Company Permission is herefy granted to: Catawba Nuclear Station Highway 274 Clover, South Carolina for the construction of a wastewater collection system in accordance with the construction plans, specifications, engineering report and Construction Permit Application signed by David R. Kulla and David L. Ward , Registered Professional Engineer, S. C. Registration Number: 11340 and 10765 . Project Name: Duke" Power Co./ Catawba Nuclear Sta. - Dechlorination System County: York Project

Description:

The addition of a dochlorination system, and associated piping and appurtenances to the existing sanitary wastewater treatment system. The wastewater will be discharged to Bia Allison Creek. Lake Wylie. NPDES Permit #SC0004278. Outfall 003 at a daily rate not to exceed - 80.000 gallons per day. The effluent concentrations of those constituents the wastewater treatment system is designed to remove or reduce are contained in NPOES Permit SC0004278 . Treatment Plant Classification: Group IT-B . Special Conditions: . (See Attachment) Permit Number: 17.521-IW Date of Issue: June 28. 1993 5 l Expiration Dates: Unless construction begins prior to aune 28. 1994 I and construction is completed prior to ; une 28. 1995 l

   .                              this permit will expire.

In accepting this it, the owner agrees to the admission of properly authorized persons , at all reasonable for the purpose of sampling and inspection. ' THIS !$ A PERNIT FOR CONSTRUCTION OKY AM DOES NOT CONSTITUTE STATE DEPARTMENT OF HEALTH AND EMIR 000lDfTAL CONTROL APPROVAL. TEMPORARY OR OTHatWISE TO PLACE THIS SYSTEN IN OPERATION. \

                                                        ~hanbf Bureau of Water Pollution Cony 51 l

l . 9

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ll I Dube lhwer Company Generation Services Department 13339llagers Ferry Road Huntersedle, NC 28078 7929 l DUKEPOWER l l July 28,1993 Mr. Robert Knauss Enforcement Division Bureau of Water Pollution Control South Carolina Department of Ilealth and Environmental Control 2600 Bull Street Columbia, South Carolina 29201

Subject:

Catawba Nuclear Station l NPDES Permit #SC0004278 l Toxicity Evaluation Plan File: CN-702.20, 702.20-1 1

Dear Mr. Knauss,

                                                                             . I l

In accordance with Part III. A.13(c) of the subject permit, . a Toxicity Evaluation Plan for a test failure that occurred at outfall 002 for the subject facility is enclosed (Attachment 2). A retest was promptly conducted in April with a pass test resulting. Additionally subsequent tests conducted in May and June both resulted in passes. Attachment 1 is a copy of results of the l J April retest. This is the first and the only biomonitoring failure to occur at Outfall 002 for the subject facility. Duke Power Company believes that the April toxicity represents a non-persistent event. Duke Power plans to continue to review relevant wastewater data along with future biomonitoring tests. If any test failures do occur this will help to better determine the cause. With DHEC's approval, DPC requests that the attached TEP serve as the final report for the April toxicity event. If you have any questions are need additionalinformation please contact either Robert Wylie at (704) 875-5970 or John Estridge at (704) 875-5970. Sincerely, 1

        ,c. >    .6%

ohn S. Carter, Tec nical System Manager ater Protection Environmental Division w w.xa n

cc: Timothy Eleazer - DHEC Columbia Vernon Beaty - DHEC Columbia John Velte - DPC ASC Robert Wylie - DPC ASC Tim Harris - DPC CNS Tony Jackson - DPC CNS

ATTM HMEvri CB0493K2 Facility: Catawba Nuclear Station NPDES No.: SC0004278 County: York Sampling Point: 002 ( Conventional Waste Treat. Sys.) Receiving Stream: Lake Wylie Imboratory: Duke Power Biomonitoring Cert. No.: 99005 Exp. Date: 12/31/93 Test Organism: Ceriodaphnia dubia Temp. Range: 24.6 to 25.7 *C IWC: 100% Test Type: ( ) hr acute; ( 6 ) d chronic; static / daily-renewal Started (date/ time): 04-23-93 / 1117 Ended (date/ time): 04-29 93 / 1018 I l Dilution Water Source Alk liard Cond 20% Perrier@ in Milli-Q DPC Lot # PER 168 62.3 75.3 162 Sample Type: grab ( 24 ) hr comp. Samole # date/ time collected Alk flard Cond O2 # renewals CN049307 04-21-93 / 1605 20.0 _39.5 252 NM 2 CN049308 04-23-93 / 1100 13.4 , 29.9 273 NM 4 Control Day 1 2 3 4 5 6 7 Temp (*C) 25.1 24.8 24.8 25.2 25.7 24.7 25.0 D.O. initial 8.2 8.6 7.9 7.7 8.9 8.4 NA final 8.3 8.4 7.8 7.8 7.9 7.9 NA pli initial 8.2 8.1 8.2 8.2 8.1 8.2 NA final 8.5 8.5 8.2 8.2 8.2 8.2 NA (100) % Effluent Day 1 2 3 4 5 6 7 Temp (*C) 24.9 25.1 24.9 25.3 25.2 24.6 24.9 D.O. initial 8.2 8.8 8.4 7.8 8.2 8.0 NA final 8.1 8.2 7.3 7.3 7.4 7.3 NA pli initial 7.8 7.7 7.3 7.3 7.2 7.2 NA final 8.0 8.1 7.4 7.3 7.4 7.3 NA Comments: This le e retest of the NPDES-requirement for 4-93.1st ettempt felled trestrnent mortelity. Principal Analyst: L3.G. Newton Procedure Number: BIO-260.0 (SC P/F Modification 1 Organism Age at initiation: 20 to 23 hours Organism Source: Duke Power Culture (Trav D&Ei Sample CN049307 Temperature at Receipt:16 'Q Thermometer ID: ELENV-30883 Sample CN049308 Temperature at Receipt: 3.2 *C Test Vessels: 30-mL coivstyrene intermittent batch discharge; only two semples were eveilable. Test Solution Volume: 15 mL No. Organisms per Test Vessel: 1 Feeding: Oailv: 0.1 mL ea. YTC and Selenastrum suso. Aeration: None M=Malej NA=Not Applicable; NM=Not Measured; ND=Not Detected Dato checked by: fA . w sm Date: V ft fj Laboratory Supervisor A Date: 93 L

                                                               //                                              V (over)

l l i ATTACHMENT 2 DUKE POWER COMPANY CATAWBA NUCLEAR STATION TOXICITY EVALUATION PLAN B ACKGROUND INFORMATION i Key Facts i Facility Name: Catawba Nuclear Station NPDES Number: SC0004278 County: York Outfall Number: 002 i Receiving Stream: Lake Wylie Test Organism: Ceriodaphnia dubia Test Type: 3-Brood Chronic Pass / Fall Test Schedule: Monthly Parameter Code: TGP3B Sample Type: 24 Hour Composite Dilution Water: 20% Perrier" in Deionized Water (Milli-Q" Weter Purification System) Testing Laboratory: Duke Power Company, Environmental Division, j Biomonitoring $ Certification Number: 99005 Expiration Date: 12/31/93

System Description

] Outfall 002 discharges flow from the Conventional Wastewater Treatment (WC) System l into the Big Allison Creek arm of Lake Wylie. The system is composed of a concrete

Initial Holdup Pond (IHP) of 300,000 gallons, two (2) clay-lined settling basins (WC A and WC B) of 5,000,000 gallons each, and a polymer lined Final Holdup Pond (FHP) of 1,500,000 gallons.

Normally the IHP will receive plant wastes from the Service Building Sump, Water Treatment Plant, Diesel Generator Room Sumps, Unit 1 & 2 Turbine Building Sumps, Transformer Base Drainage Sumps, Diesel Generator Catchment Sumps, and the Sulfuric Acid Tank Containment Sump. The IHP serves to allow for large solids ) removal, oil skimming, and flow surge control. Wastes flow from the IHP to either settling basins WC A or WC B. The settling basins are parallel and operated in a batch mode with one basin in service to collect waste flow and one in standby, recirculation, or discharge. Provisions for treatment (neutralization, sedimentation, oxidation and. mixing) are incorporated into the operation of the settling basins as the waste is prepared for discharge. Discharge is normally from one of the settling basins directly to Lake Wylie either by gravity at approximately 900 gpm or pumping up to 1500 gpm.

Page 2 of 3 The FHP is used to collected flow from the Yard Drain Collection System. Three sumps collect site runoff and stormwater and transfer this to the FHP. The FHP allows for treatment and release of this waste in a controlled manner. Attachment 3 provides a water flow schematic which indicates the inputs to this 1 l Outfall. Attachment 4 provides a site plan view indicating where the outfalls are physically located. Circumstances Requiring This Toxicity Evaluation Plan A statistically significant (a = 0.05) mortality (50% or 10 of 20 Ceriodaphania dubia) was observed in the 100% Outfall 002 effluent treatment verses the control treatment (0% or 0 of 19 C. dubia) during biomonitoring for the month of April 1993. That test is a failure based on criteria defined in Catawba Nuclear Station's NPDES Permit.  ; Initial Data and Information The monthly biomonitoring test for Outfall 002 was initiated on 04/.08/93 with a 24-hour composite sample that was collected on 04/07/93. Effluent renewals for the entire 6 days of the three-brood test were made with this sample as per SCDHEC . guidance in instances where additional samples are unavailable due to intermittent batch release at Outfall 002. Site personnel reviewed the station's activities at th'e time of the failure and found little in the way of an event which could have attributed to this test failure. All other NPDES data for releases during this period were within permitted levels. Analytical measurements made during this test revealed that pH and hardness were at their lowest values since biomonitoring began, 6.1 units and 16.8 mg/l as CACO3 , respectively. Additionally, alkalinity was very low, only 1.8 mg/l as CACO3 . Toxicity Reduction Evaluation Plan A retest of Outfall 002 was initiated at the earliest opportunity to verify the test failure. The retest began 04/23/93 with a sample collected on 04/21/93. A subsequent effluent sample collected on 04/23/93 was also used in the test. The retest passed. The May 1993 monthly biomonitoring test for Outfall 002 was initiated on 05/13/93 with a sample collected on 05/12/93. Again, effluent renewals for the entire 6 days of the three-brood test were made with this sample as per SCDHEC guidance in instances where additional samples are unavailable due to intermittent batch release at Outfall 002. This test also resulted in a " pass". The June 1993 monthly biomonitoring test for Outfall 002 was initiated on 06/10/93 with a sample collected on 06/09/93. Again, effluent renewals for the entire 6 days of the three-brood test were made with this sample as described above. This test resulted in a " pass".

                                                                                           \

l 1 1 I l Page 3 of 3 Based on our inability to verify the toxicity that was observed in the first April 1993 test, Duke Power Company believes that the toxicity that was displayed represents a non-persistent event. DPC plans to continue to review relevant wastewater data at the same time of future biomonitoring in order to better determine the cause of if any future failures do occur. 1 l l

40 DRIFT H " EVAPORATION

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ll l Duke 1%uer Company Generation Services Department 13339 Hagers ferry Road Huntersville, NC28018 7929

DUKEPOWER August 31, 1993 Mr. Timothy M. Eleazer Industrial and Agricultural Wastewater Division South Carolina Department of Health and Environmental Control 2600 Bull Street Columbia, SC 29201

Subject:

Catawba Nuclear Station- Cooling Tower Drainage j NPDES Permit No. SC0004278 - l File: CN-254.00

Dear Mr. Eleazer:

The purpose of this memo is to request that a trial alternate method be approved by the State for drainage of the cooling towers at the Catawba Nuclear Station. At the start of each nuclear refueling outage, one of the first tasks which must be accomplished is to drain the water out of the cooling towers and condenser cooling system. Presently, this task requires approximately 36 hours to accomplish. If the proposed method is approved, the task will be reduced to approximately 12 hours. Present Method of Drainage j The cooling water contained in the towers and plant condenser cooling system consists of approximately 7.5 million gallons of raw water from Lake Wylie per unit. There are three cooling towers per each nuclear unit for a total of six cooling towers at the Catawba site containing approximately 15 million gallons of water. Upon the start of an outage the water contained in the cooling system is removed as follows: For the unit 1 cooling towers, approximately 5 million gallons is discharged via outfall 005-001 at a flow rate of approximately 15,000 GPM. The remaining water is drained to the turbine building sump and pumped to the conventional waste treatment system (WC) and discharged via outfall 002.

     ~~c,wan
                                                                   -               M

Page #2 Cooling Tower Drainage For Unit 2 the process is similar but the volumes are slightly different. Approximately 3 million gallons discharge via outfall 005-001 and 4.5 million gallons to the turbine building sump. i l Proposed Method of Drainage l In order to expedite the removal of water from the cooling towers I and cooling system, the following method is requested. The cooling towers will be drained in three phases. The three phases refer to the different elevations from which the water will be drained. l The initial phase will consist of draining the water out of the cooling towers by means of the blow down line, outfall 005, and outfall 001 using the normal method of water removal. This phase would bring the water to approximate elevation 619 - the yard elevation of the cooling towers. The second phase would begin after the water has reached elevation 619. At this point a manway will be removed from the condenser

  • cooling piping system (RC). The RC piping is 14 feet in diameter and runs between the cooling towers and the condenser. Water will be pumped from the RC piping into a storm drainage yard drain. The yard drain flows toward and discharges to Lake Wylie near the intake structure.

The total volume of water to be discharged during the second phase is approximately 1.8 million gallons at a flow rate of 18,000 gallons per minute. The third phase would be very similar to the second phase, however, it would be at a lower elevation. The third phase would begin at approximate elevation 593 - the yard elevation next to the plant within the protected area boundary. Once the water elevation reaches 593, a manway would be removed and the water will be pumped from the RC piping to a yard drain. This yard drain flows toward outf all 001 and discharges to Lake Wylie in the general vicinity of outfall 001. The total volume of water to be discharged during the third phase is approximately 3.7 million gallons at a flow rate of 60,000  ; gallons per minute. I I Erosion control will not be a problem as these storm drainage structure discharge directly to Lake Wylie. The above flow rates and volumes are only approximate volumes and were calculated based upon the flow capacity of the storm drainage system.

Page #3 Cooling Tower Drainage l Please find attached a general layout sketch showing the various , NPDES outfalls for the Catawba Nuclear site. This sketch also shows the proximity of the cooling towers to Lake Wylie along with other plant features. Summary Approval of this request will simply allow the water in the cooling. towers to be removed fester. All the water within the cooling system will still discharge into Lake Wylie regardless of the method used to dewater the cooling towers. If at all possible, we would like to request approval for this be granted by September 8, 1993 in order to prepare for the next scheduled outage in late October. Should this initial trial be successful, we will request .that permanent approval be granted to dewater the cooling towers in this - manner. If you need additional information or have any questions please give me a call at (704) 875-5965. Sincerely, Jo n Estridge, eer Environmental Division, Water Protection jte/224 cc: NRC Document Distribution

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ll l Duke 1%uct Cornpany Generation Services Departenent 13339 Hagers ferry Road , Huntersville, NC280781929 1

)   DUKEPOWER I

l August 31, 1993

                                                                                                                )

l Mr. Timothy M. Eleazer  ! Industrial and Agricultural Wastewater Division I South Carolina Department of Health and Environmental Control , 2600 Bull Street Columbia, SC 29201 l l l

Subject:

Catawba Nuclear Station j NPDES Permit No. SC0004278 ' Notification of Maintenance Chemical l File: CN-702.13

Dear Mr. Eleazer:

Pursuant to Part III item A. 9. Catawba Nuclear Station is planning to change to a molybdate based corrosion inhibitor program. If this l program is successful it will be implemented in several closed { cooling water systems that currently use sodium nitrite as their l main corrosion inhibitor. Once implemented this program would i significantly reduce the amount of sodium nitrite that is used at I Catawba Nuclear Station. The product will be utilized in closed cooling water systems and will only be discharged on an intermittent frequency during system maintenance or possibly by leaks. It potentially could be discharged via Outfalls 001 and 002 to Lake Wylie. The product will primarily be discharge through outfall 002- the conventional waste treatment system (WC). When cooling system maintenance is required the product would be drained to the WC system and discharged via outfall 002. The product could also be discharged through outfall 001 due to system leaks or system-drainage via the liquid radwaste system.

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Attachment #1 provides the infor: nation that is required by Part III A item 9 of the subject permit. Attachment #2 provides toxicity information on a typical molybdate based corrosion inhibitor product to be used - Performax 330. Attachment #3 provides toxicity test results on nitrite. A comparison of this toxicity data indicates that nitrite is the most restrictive compound. With reference to the subject NPDES permit Part III A. item 8. the NOEC for nitrite is 4.3 mg/l (6.4 mg/l as sodium nitrite). Attachment #4 is a copy of the Material Safety Data Sheet (MSDS) for Performax 330. Performax 330 is a typical product that is planned on being used. Different proprietary names for the same compound may be selected for use. The attached MSDS identifies the various ingredients along with their CAS numbers. Summary f Based on the information provided, it is requested that the use of a molybdate based corrosion inhibitor be approved and that a limit of 4.3 mg/l (6.4 mg/l as sodium nitrite) for nitrite for Outfalls 001 and 002 be established. If approval is granted Catawba would " like to begin use of this product by October 20, 1993. Please note ~ that 4.3 mg/l of nitrite is equivalent to 1.3 mg/l NO 2 -N/l or nitrite as nitrogen . If you need additional information please give John Estridge a call

at (704) 875-5965.

Sincerely, 4 1

             '?~

' QI n S. Carter, Technical System Manager Environmental Division, Water Protection

jte/225 l 1

l j cc: NRC Document Distribution i l i 4 i i

ATTACHMENT 1 I l CATAWBA NUCLEAR STATION PROPOSED MAINTENANCE CHEMICAL LIMIT AUGUST 26, 1993 NPDES PERMIT SC0004278 PART III ITEM 9 REQUIREMENTS

1) NAME AND GENERAL COMPOSITION OF THE MAINTENANCE CHEMICAL 1

a) Sodium Nitrite ' b) Sodium Molybdate c) Sodium Metasilicate Anhydrous For the general composition of the maintenance chemical please refer to the attached Material Safety Data Sheet.

2) QUANTITIES TO BE USED Approximately 1000 pounds / year of this product are to be added to closed cooling systems.
3) FREQUENCY OF USE Product will be added to plant systems as needed to maintain concentration levels of between 1000 and 3000 mg/1.
4) PROPOSED DISCHARGE CONCENTRATION Based on toxicity information as referenced in Part III A.

Item 8, the NOEC for nitrite is 4.3 mg/1.(6.4 mg/l as sodium nitrite) Therefore a daily maximum limit of 4.3 mg/l Nitrite per an occurrence is requested for Outfalls 001 and 002. Sampling to confirm compliance with this limit would be required whenever maintenance activities or leaks occur that have the potential to exceed the value of 3.5 mg/1.

5) EPA REGISTRATION NUMBER unknown ,

i

6) AQUATIC TOXICITY INFORMATION 1

See Attachments #2 and #3. l l l l

i! ' [ f-/m- /nte3[ 2, l l l PERFORMAX" 330 CORROSION INHIBITOR i )i' I l AOUATIC_T0XICIII 96 HOUR LC50 RAINBOW TROUT:  ! 1,581.1 mg/l (CONFIDENCE LIMITS 95%: 1,000 - 2,500 mg/1)  !

        *NOEC RAINBOW TROUT:                                                         i 1,000 mg/l                 l 96 HOUR LC50 EATHEAD MINNOW:                      812.3 mg/l (CONFIDENCE LIMITS 95%:               682 - 968 mg/1)            -

NOEC FATHEAD MINNOW: 500 mg/l 48 HOUR LC50 DAPHNIA MAGNA: 526.8 mg/l (CONFIDENCE LIMITS 95%: 381 - 738 mg/1) NOEC DAPHNIA MAGNA: s 125 mg/l l i 5 6 i

   *NOEC - No observed effect concentration.

i s

klC Men Memo to: Mitch C. Griggs Date: 24 January 1990

Subject:

Acute and Chronic Ceriodaphnia dubia Toxicity of Nitrite (as NANO 2) to Data reported previously regarding chronic toxicity of nitrite to C. dubia (memo from J.S. Velte to M.C. Griggs dated 10 January 1990) is in error and should not be used. I was notified by our chemists this morning that the results of prior nitrite analyses had been reported erroneously to me as "mg NO 7 /L" when, in fact they were "mg NO 3 -N/L". In other words, the concentrations that I had been provided represented only the mass of the nitrogen component of the nitrite ion, not the entire ion. This problem is easily 3.28. corrected by multiplying the values reported previo6 sly by A revised analysis of the chronic toxicity test is reported here, as are the results of a recently completed and

" properly" analyzed acute toxicity test with C. dubia. Please accept my apologies for any confusion this has caused you. On the bright side, we no longer need be concerned about the mysterious disappearance of nitrite in lake water (we've recovered essentially 100% of what was added).              And, nitrite has ~

proven even less toxic to C. dubia than we had originally thoughti Here are the revised chronic test results, based on measured NO concentrations (see Table 1) . The raw data are attached. 2 NOEC =,4.3 mg NO /L 2 LOEC = 8.5 mg NO2 /L t' Chronic Value (CV) = m/4.3 X 8.5 = 6.0 mg NO /L 2 A Moving Average-Angle (MAA) analysis of the 48-hour static acute test data gave the. following LC50 and associated 95% confidence  ; l limits (again, the raw data sheet, and a graph of the nominal vs. measured exposure concentrations -- Figure 2, are attached). LC50 = 28 mg NO2 /L Lower and Upper 95% Confidence Limits = 21 and 39 mg NO /b 2 If you have please questions, call me,at concerns, or need additional information, 875-5237. Again, I'm sorry for the confusion. M J h S. Velte Scientist cc w/ attachments: R. Biswas K. Finley G. Vaughan

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TOXICITY TEST DATA " "' J W W Industry / Toxicant: Ala A/0,_ Test Conducted By: i 's. NLut Test Typa:hStatic ' Address. Testing Laboratory: Mc_ - INc N %W O Static with renewal at: NPDES Permit No.: - Beginning Date: EL. / BA / _'la_ Time: /O.30 0 Continuous flow Effluent Senal No.: __ --- Ending Date: 0 /_ / 4'L / 90 Time: SempWfype- O Grab Conected: _ / _ / ____ Time: Dilution water: _h___ tva eco-t Test Organism: _C.e_riodachna.__.avJos __ ___. / _ / _ Time: Carrier Solvent: O Yes f(No ___ __ Organism Age: _i2_'t L __ O Composite Test cnterion:)(Mortality Olmmobility Organism Source:nau- 9. ews e^,L.W. Conected From: _ / __ _ / Time: _ _ _ _ _ . _ _ _ (Other) To: / / Time: Concentration Temperature (*C) Chemistry Data (gm.,/t egd_ Test e Container Number of Surviving Organisms (ELENV- 31100.___ ) \ rwm'<% [-(mgA4 Date:dl / AL/id Time: /_6_Op Ah Number 0h Ih A4 V8 Sk 19 LIA e- High _ . O_ . ._Qfi 11 /2. IA 11 " 24.;L SIsA M.1 ( Control Conc.

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MK" - 31 .% IA /.R ll l N'D M.i M la  ! ( (mg/tt w- a u u n e-n.w / \ w . [ 64 4p3 j J. /A _l(1 6 23 9 15 lim.0 k - (mgA ) ___ldb_.. .I6 /2- /b L b. . _ _ _ . _ . . _ _ 33.T N^ M4  ! \ Procedure Numbers IAR _ 5.8 . . Il /1. 1. A M-Q "LS t .89  ! k BIO _ Gen- 0 (Temperature) _ __  ! \ BIO. A 4.0 (Dissolved O,) l \ BIO. 2 in _ 0 (pH) Analyst initials: l'UNIPNIV9)IM4 I I I I I Ik'*/ IW1 NdMI I I I I I I I 10 ' i L^J (Spec. Cond.) Ogan'sm Lengmimm)- O ~ ._O _ . U U . Q kV . Meen- S& ___ NA (TRC) Orger.wrAA*aigh' & . _ . . _ _ . _ . . . _ _ . . _ _ . _ . - - . . . . h M ._ N/i _Foral Alle.) Test vessel capacity: 100. mL _ L Condition of surviving organisms at end of test: a Ha. ness) Test solution volume: _50____ _ __ mL _ _ ._ . . . . ._ _ . .L _ _ _ _ _ . _ . Feeding:M{No Oyes: Comments: MFr h$ hit . ft, tjurw Aeration:p(No Oyes: _ _ _ _ . __ _.

i l l l 1 t FIGURE 2 , <- l Nominal and Measured Concentrations of N02 in Lake Wylie l

l Water.

(from: acute toxicity of nitrite to C. dubia test)  ! l o O~ .. *128-/ ) o '

                                                                                                                                                                            -       x
                                                                                                                                                                        -         121
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nz o l g m - w C - ce Z 32 2 8 . 33 o

  • N 16 o . 8.0 15.7
                                          -                                                                                                                                            i 7.2                                                                                                                               ;

O 1 2 3 4 5 EXPOSURE. TREATMENT NUMBER i _ _ _ . _ _ - - - - - - - - - . -^ ~ ' #

_ . . . . - - - - . . . . -.....w.. m a a s e m. y i i-MATERIAL SAFETY 4 . . . Am em v c. Telephone Ons Drew Plaza. Boonton. Nsw Jtrssy 07005 j OATA SHEET w ~. Phons (201) 263-7600/Telax 136444 1(800) 274-5263 or 1(800) ASHLAND c02874 PERFORMAX(TM) 330 COOLING WATER TREATMNT Page: THIS MSDS CCNPLIES WITN 29 CFR 1910.1200 (THE HAZARD CCM41NICATION STANDAR0) ProcuCt Natne : PERFORMAX(TM) 330 COOLING WATER *REATm i CD 10 922 Data Sheet No: 0231188-004 ' CREW INDUSTRI AL O! VISION Precarea: 05/29/91 500 ARO OALE DRIVE SuDerseces: 04/24/91 SUITE 115 PRODUCT: 491800t CHARLOT*E INVOICE: l NC 28210 !NVOICE DATE: 0: OREW INDUSTRIAL O!V!SION 500 ARO OALE DRIVE DISTRICT MANAGER CHARLOTTE Nr 7astq E 1*R e n *I. m uz J E

  • Ie III.e d n e s s. a s m a mardIMit General or Generic 10: COOLING WATER TREATMENT DOT Hazarc Classification: ORM-E IF PRESD(T. I ARC. NTP ANO OSHA CARCINOGENS AND CHEMICALS SUBJECT 'O THE REPORT-ING REQUIREMENTS OFSEE SARA TITLE !!! SECTION 313 ARE IDENTIFIED IN THIS SECTION.

OEFINITION P, AGE FOR CLARIFICATION INGREDIENT  % (by WT) PEL TLV Note i SOO!LM N! TRITE 10-25 ' CAS s: 7632-00-0 ( t) SOO!UM hCLYBOATE 1-10 5 H1/M3 C. 'd3 CAS s: 7631-95-0 500fLN NITRATE 1-to CAS s 7631-99-4 ( 2)

  • SOCIUM METASILICATE APeWDROUS 1-10 15 MG/M3 CAS s: 6834-92-0 10 hG/M3 ( 3)

Notes ( 1) PEL/TLV NOT ESTABLISHED FOR THIS MATERIAL ( 2) PEL/TLV NOT ESTABLISHED FOR THIS MATERIAL ( 3) PEL AND TLV ARE FOR TOTAL NUISANCE PARTICULATES. SECTION l l i - P H Y S I C AL DATA - e Boiling point f or CD4PONENT( 55-70%) 212.00 Deg F ( 100.00 Deg C)

                                                                                                                                           @        760.00 m Hg Vapor Pressure                    for COMPONENT (               55-70%)                                                                    17.50 m t*2
e. 68.00 Dog F

( 20.00 Deg C) Soecific Vapor Density FEAVIER THAN AIR Specific Gravity 1.25 0 77.00 F 9( 25.00 C) Percent Volatiles' 55-70% Evaporation Rate SLOWER THAN ETFER pH 12.9 Apoearance CLEAR YELLOW State LIQUID FLASH POINT NOT APPLICABLE EXPLOSIVE LIMIT NOT APPLICABLE EXTINGUISHING MEDI A: WATER FOG HAZARDOUS OECO@0SITION PRODUCTS: MAY FORM T0XIC MATERIALS: NITROGEN COMPOUNOS FIREFIGHTING PROCEDURES: WEAR SELF-CONTA!NEO BREATHING APPARATUS w!TH A FULL FACEPIECE OPERATED IN THE POSIT PRESSURE COdAND KlCE AND FULL DOGY PROTECTION wtN FIGiTING FIRES. COPYRIGHT 1991 CONTINUED ON PAGE: 2 1

                                                                  .         g,      ,,,c,                           e6W MATERIAL SAFETY                                  Ona Drsw Plaza. Boonton. Ntw Jarsey 0700S                     Telephono         ;

DATA SHEET Phona (201) 263-7600/Telax 136444 1(800) 274-5263 c l 1(800) ASHLAND i DEFINITIONS ( 1M Ns definiuon page es intended for use witn Material Saf etv Oata Sheets supphed by the Orew Chemical Corcoration.  ! Reciosents of inese data sheets snould consult the OSHA Safety ano Healtn Stancards (29 CFR 1910). carticuiaray sucoart l G - Occuoanonal Heastn and Environmental Controt. and suecart i - Personu Protective Eouipment. for generai guicance on contro of potenual Occupanonai Heaitn ano Saf ety Hazaros. i l SECTION I jECTION IV iconti PRODUCT IDENTIFICATION EXTINGUISHING MEDIA: Following National Fire GENERAL OR GENERIC ID: Chemical f amov or product ecun %mam cmem cescriot on. FIREFIGHTING PROCEDURES: Minimum ecutoment to DOT HAZARD CLASSiflCATION: Proeuct meets DOT protect firengnters vom toxic procucts of vaoorization, j criteria f or nazaros hsted. comousuon or @composioon in fire situanons. Mer  ; firefighting hazards may also be incicated. SECTION !! 1 COMPONENTS SPECIAL FIRE AND EXPLOSION HAZARDS: States hazards not covered by otner sections. Comoonents are hsted in this section if tney present a physical or health hazaro and are present at or amove NFPA CODES: Hazard ratings assigned by the National 1% in tne mixture. If a component is scentified as a Fire Protection Association. CARCINOGEN by NTP. IARC. or OSHA as of the.. cate SECTION V on the MSDS. it will be hsted and footnoted in' this HEALTH HAZARD DATA section wnen present at or aoove 0.1*. in the croouct-Negative conclusions concerning carcinogenicity are not PERMISSIBLE EXPOSURE LIMIT: For product reporteo. Additional hesith inf ormation may be f ound in THRESHOLD LIMIT VALUE: For product. Section V. Components suolect to the reporong recuirements of Section 313 of SARA Title 111 are EFFEC-~ OF ACUTE OVEREXPOSURE: Potential local ano identified in the footnotes in tnis ser.tton. along with y . Wects due - single or snort term overexcesure to the eyes ano .in or through innalation typical cercentages. Other comoonents may be hsteo if  :- :aat:m deemeo accropriate. E:.cosure recommendauons are for comoonents. OSHA EFFECTS OF CHRONIC OVEREXPOSURE: Potential local

ermissible Exposure Limits (PELS) and American and systemic ef f ects due to repeated or long term Conference of Governmental Incustrial Hygienists overexposure to the eyes and skin or througn inhalation or ingestion.

(ACGIH) hne Threshold Limit Values (TLVs) acoear on tne with the component idenufication. Other recommendations appear as footnotes, FIRST AID: Procedures to be followed when deshng with accidental overexposure. SECTION lli PRIMARY ROUTE OF ENTRY: Based on properties and PHYSICAL DATA excected use. BOILING POINT: Of product if k nown. The lowest SECTION Vi vaiue of the components is listed for mixtures. REACTIVITY DATA VAPOR PRESSURE: Of proouct if known. The highest HAZARDOUS POLYMERIZATION: Conditions to avoid to value of the components is hsted ,f or mixtures. prevent hazardous polymerization resulting in a large release of energy. SPECIFIC VAPOR OENSITY: Comoared to AIR = 1. If STABILITY: Conditions to avoid to prevent hazardous or tne Specific Vapor Density of a proouct is not known. viotent decomposition. the value is excressed as hghter or greater than air. SPECIFIC GRAVITY: Compared to WATER = 1. If INCOMPATIBILITY: Materials and conditions to avoid to Specific Gravity of product is not known. tne value is prevent hazardo,us reactions. expressed as less than or greater than water. pH: If aophcable. SECTION Vil SPILL OR LEAK PROCEDURES PERCENT VOLATILES: Percentage of material with initial boshng point below A2S degrees Fahrenneet and Reasonable precautions to be taken and methods of vaoor pressure above 0.1mm Hg at 68 F. containment. clean-up and disposal. Consult federat. EVAPORATION RATE: Indicated as faster or slower ' than ETHYL ETHER. unless otherwise stated. '"Y " #U"9 #" ##" "C"**"'** SECTION IV " FIRE AND EXPLOSION DATA FLASH POINT: Method identified. " " handling the product. EXPLOSION LIMITS: For procuct if known. The lovwest value of the components is tested for mixtures. SECTION IX HAZARDOUS DECOMPOSITION PRODUCTS: Known or expected hazardous products resuiting from heating-burning or other reactions. Covers any relevant points not previously mentioned. ADDITIONAL COMMENTS Containers should oe either reconoitioneo by CERTIFIED hrms or oroceriv discosed of by APPROVED firms. containers snound be in accorcance enm aconicaole ravv s anc reautauens. 'EMP TY" crums snould nct be given :o .noividuais. V ano ex Serious accicents ' ave resuited f rom tne misuse of 'EMPTIEO containers (drums oaos.et

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_ .. . . m _ . . _ -.. . _ - . _ - - - ll l Duke Ibuttr Company Generation Services Department 13339 Hagers Terry Road Hunterndle, NC26078-1929 i DUKEPOWER September.30, 1993 Mr. Timothy M. Eleazer Industrial and Agricultural Wastewater Division South Carolina Department of Health and Environmental Control 2600 Bull Street Columbia, SC 29201

Subject:

Catawba Nuclear Station -NPDES Permit No. SC0004278 Request to Reduce Toxicity Monitoring-Outfalls 001, 002 File: CN-254.00

Dear Mr. Eleazer:

The purpose of this memo is to request a reduction in the toxicity monitoring requirements for Catawba Nuclear Station's outfalls 001 and 002. Please find a summary.of the toxicity monitoring history for these two outfalls listed below: Date Outfall 001 Outfall.002 October 1992 Pass Pass i November 1992 Pass Pass i December 1992 Pass Pass January 1993 Pass Pass l February 1993 Pass Pass March 1993 Pass Passl i April 1993 Pass Fall April 1993 Retest N/A Pass i May 1993 Pass Pass  ! June 1993 Pass Pass July 1993 Pass Pass August 1993 Pass Pass

  • Nit *] W1 !M W&1 Cu'f4
                                                                                         ,.n., n-, . - - . . . . , . . - -

l l i Please note that in Part III, special condition #13 (e) allows for a reduction in the monitoring from monthly to quarterly after twelve consecutive months of toxicity testing has been completed. Additionally, it is requested that Part III, special condition #14 be put into effect. This will allow pages 5 & 9 of the permit to become effective and for pages 4 & 8 to expire. l Pages 5 & 9 require that 1 sample per month be collected. Therefore, if the request to drop the frequency to quarterly is granted, these sheets will need to be revised by the State to show the new frequency of quarterly sampling. Additionally, pages 5 & 9 differ from pages 4 & 8 in that Part III, Special Condition #13 e is omitted from the requirements. This is the condition which requires that a toxicity evaluation plan be submitted following a failed toxicity test. We would like for the State to verify that this is correct. If possible we would like a response to this request prior to the November, 1993 sampling. If you need additional information or have any questions please call Jchn Estridge at (704) 875-5965 or Robert Wylie at (704)875-5970.

                                                                                                                 ~

Sincerely, John Carter, Technical System Manager Environmental Division, Water Protection jte/240 cc: NRC Document Distribution

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F e IWATER POLLUTICN TO 8 704 g7s sg74 1993 11-05 03sOSPM #210 P.02/02 Soutn Car 0Hna -

                                                          ,g DHEC m .m .m                - c a,seet Rwww s. Jew ooe.cneeman Roboet J 8 esp #tng, Jr. Vice chetimen
                                           ****'**"*****'8"

WWwnE Wasaga John k 9etse no. o s,,m e m sc = , - , - ~ . ~ , M',7,*,fg "O i November 5, 1993 i l Mr. John S. Carter, Technical System Manager Environmental Division Duke Power Company 13339 Hagers Ferry Road Huntersville, N.C. 28078-7929 Re: NPDES Permit No. SC0004278 ' Duke Power Co./ Catawba Nucl ear St ation York County Daar Mr. Carter: Our Office has received your September 30, 1993 request to reduce the  ! sampling frequency of the chronic toxicity testing for Outfalls 001 and 002 required by NPDES Permit No. SC0004278 at the Duko Power Company / Catawba Nuclear - Station in York County. Based on a review of. the toxicity testing results submitted, we agree with your request to reduce the sampling frequency from monthly to quarterly. We will be sending the revised discharge monitoring l reports (DMR) in a few weeks. Also, as roquested pages 5 and 9 of the NPDES permit will become effective and pages 4 and 8 shall expire. In regard to 1 Special Condition No.13 Item c, when pages 5 and 9 become offective the toxicity l testing becomes an enforceablo part of the permit. A chronic toxicity testing failure would be considered a violation of the permit rather than a monitored and i l reported result. The October 1993 chronic toxicity tosting results for Outfalls 001 and 002 shall serve as the toxicity samplings for the last quarter of 1993. If you should have any questions, please call me at (803)734-5247. 1 Sincerely, 1

r. y*

Cl A- w - Timothy . Eleazer Environmental Engineer Associato Industrial and Agricultural Wastewater Division THE/ebs cc: Al Williams, Catawba EQC Bob Knauss, Enforcement BWPC Henry Gibson, NPDES Administration Vernon Boaty, Water Quality Monitoring 0 ..~m

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ll . i Duke Ibuer Company Generation Sernces Department 13339 Hagers Ferry Road Huntersalle, NC 28078 7929 DUKEPOWER November 19, 1993 Mr. Robert Knauss Enforcement Division South Carolina Department of Health and Environmental Control.  ! 2600 Bull Street Columbia, SC 29201

Subject:

Catawba Nuclear Station -~Outfall 001 NPDES Permit No. SC0004278 Toxicity Evaluation Plan File: CN-254.00 CERTIFIED: P 068 519 044

Dear Mr. Knause:

Part III. A. 13 O(c) of the subject permit requires that a Toxicity Evaluation Plan (TEP) be submitted when a test failure occurs. A sample collected on October 4, 1993 failed the required toxicity monitoring at outfall 001. A retest sample collected on October 18, 1993 in a passing test. Attached please find the laboratory reports for both tests. Based upon the above information and the-fact that there is no  : indication of routine toxicity failures, Duke Power requests'that ' no further TEP action be required for this October 4, 1993 test failure. Tim Eleazar, provided this office with a memo dated November 5, 1993 which replaced the monitoring and reporting requirement with a toxicity compliance limit. He also indicated in this memo that our fourth quarter 1993 sampling results have been satisfied by the above monitoring. Therefore, our next scheduled toxicity monitoring will occur during the first quarter of 1994. If you need additional .information or have any questions please contact John Estridge at (704)875-5965. Sincerely, 9 -

 'ohn S. Carter, Technical System Manager                                                           5 Environmental Division, Water Protection                                                                    ;

_ , , - - - . - - - - ,,,,,L,~,--, ,,---,.,-,,--w,---

jte/253 attachment cc: Tim Eleazar- SCDHEC Industrial WW Division Vernon Beaty-SCDHEC l l I l I i 4 i I.-- - - . . . . , , , . . . . . .. . . . , , _ _ . . - . . . .. . . . . . , . _ _ .

CA1093K2 Facility: Catawba Nuclear Station NPDES No.: SC0004278 County: York Sampling Point: 001 (Blowdn, Serv. Water, Rad. Waste) Receiving Stream: Lake Wylie Laboratory: Duke Power Biomonitoring Cert. No.: 99005 Exp. Date: 12/31/93 Test Organism: Ceriodaphnia dubia Temp. Range: 24.3 to 25.2 *C IWC: 100%' Test Type: ( ) he acute; ( 7 ) d chronic; static / daily-renewal Started (date/ time): 10-20-93 / 1116 Ended (date/ time): 10-26-93 / 1052 Dilution Water Source M Hms[ COIL 4 20% Perrier@ in Milli-Q I DPC 1.ot# PER- 200 62.3 76.6 167 Sample Type: grab ( 24 ) hrcomp. Samele # date/ time collected M Hg5[ Co_D.4 Cl2 # renewals CN109305 10-18-93 / 1310 13.4 22.1 222 ND 2 CN109306 10-20-93 / 1525 13.8 21.9 225 ND 2 CN109307 10-22-93 / 1300 13.9 22.5 235 ND 2 Control Day 1 2 3 4 5 6 7 Temp (*C) 24.3 24.8 24.9 24.9 25.0 24.7 24.8 D.O. initial 7.8 8.0 8.3 9.0 7.9 8.1 NA final 7.8 8.1 8.0 8.0 7.9 8.0 NA pH initial 8.2 8.2 8.2 8.2 8.2 8.2 NA final , 8.2 8.1 8.2 8.3 8.0 8.1 NA (100) % Effluent Day 1 2 3 4 5 6 7 Temp (*C) 24.4 24.9 25.0 24.7 25.2 24.6 24.6 D.O. Initial 7.5 7.6 8.0 8.3 8.1 8.0 NA final 7.4 7.5 7.5 7.7 7.7 7.7 NA pH initial 7.3 7.4 7.4 7.4 7.4 7.5 NA final 7.4 7.3 7.4 7.5 7.6 7.5 NA Comments: Principal Analyst: B.N. YgAr)g Procedure Number: B10-260.0 (SC P/F Modification) Organism Age at Initiation: 20 to 22 hours Organism Source: Duke Power Culture (Trav C i Sample CN109305 Temperature at Receipt: 0.7 *C Reteet of Failed oct. NPDES Test (001) Sample CN109306 Temperature at Receipt: 0,3 *C Test Vessels: 30-mL oolvstyrene Sample CN109307 Temperature at Receipt: 0 2 *C Test Solution Volume: 15 mL No. Organisms per Test Vessel: 1 Feeding: Dailv: 0.1 mL ea. YTC and Selenastrum suso. Aeration: None M= Male; NA=Not Applicable; NM=Not Measured; ND=Not Detected Dato checked by: / but zrt4 Am. Date: 4(d mtory une

                                                         - b d,            ,

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                                                                                                       %te:            Oc (over)

ChiO95El Facility: Catawba Nucl:er Station NPDES No.: SC0004278 Cour.ty: York j Sampling Point: 001 (Blowdn., Serv. Water, Rad. Waste) Receiving Stream: Lake Wylie Laboratory: Duke Power Biomonitoring Cert. No.: 99005 Exp. Date: 12/31/93 Test Organism: Ceriodaphnia dutia Temp. Range: 24.3 to 25.6 *C IWC: 100% Test Type: ( ) hr acute: ( 7 ) d chronic; static / daily-renewal Started (date/ time): 10-05-93 / 1215 Ended (date/ time): 10-12-93 / 1215 Dilution Water Source M Hard Coud 20% Petrier@ in Mil!I-Q DPC Lot # PER- 197 60.6 79.3 183 1 Sample Type: grab ( 24 ) hr comp. I Samole # date/ time collected g ((;gg Cgnd .Cl2 # renewals CN109301 10-04-93 / 1300 13.8 21.0 205 ND 2 CN109303 10-06-93 / 1530 16.7 21.9 225 ND 3

                                                                                                                         ~

CN109304 10-08-93 / 1305 14.5 19.1 208 ND 2 , l Control Day 1 2 3 4 5 6 7 8 l Temp (*C) 24.8 25.2 24.5 25.3 25.1 25.4 25.0 24.9 . D.O. initial 7.9 7.9 7.9 7.8 8.2 8.5 8.3 final 7.9 7.8 7.7 7.7. 7.8 7.9 7.8 pH initial 8.1 8.3 8.3 8.3 8.2 8.2 8.2 final 8.2 8.2 8.2 8.2 8.2 8.2 8.3 (100) % Effluent Day 1 2 3 4 5 6 7 8 Temp (*C) 24.3 25.6 25.0 25.6., 25.2 25.5 24.8 24.7 D.O. initial 8.0 7.8 7.8 M 7.8 7.8 8.2 final 7.6 7.6 7.5 ' 7.5 7.6 7.7 7.6 pH initial 7.3 7.4 7.3 7.3 7.3 7.5 7.4 final 7.3 7.5 _. . _ 7. 6 7.6 7.6 7.8 7.6 i Comments: Principal Analyst: B.N.Youna Procedure Number: BIO-260.0 (SC P/F Modification) Organism Age at initiation: 19 to 24 hours Organism Source: Duke Power Culture (Trav C&D) , Sample CN109301 Temperature at Receipt: 0.4 *C l Sample CN109303 Temperature at Receipt: 1.6 *C Test Vessels: 30-mL oolvstyrene l Sample CN109304 Temperature at Receipt: 0.7 *C Test Solution Volume: 15 mL No. Organisms per Test Vessel: 1 Feeding: Dailv: 0.1 mL ea. YTC ary1 Selenastrum suso. Aeration: None M= Male; NA-Not Applicable; NM=Not Measured; ND=Not Detected Dato checked by! O. m Dole: # fd3 teorotory superveor:

                                                        &n Dole: udwO (over)

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 .         A ,uo.,s       ..                 ,   . , , wv,i             u4 w     m.     . . , ,                                        ., o s oOuth Cktrolin3                C:mmesasonen Daupas E.Bryant e

DHEC

                     ,..n oin nn.no enmn=nw co Boe'd: R6crad E. Jabbour, DOS, Charman RoDeni Slrtpling, Jr.Vice Cranrnan S* 'd * * *"d * *"*
  • William E Apologate, lit.

John H. BJrfts4 M'*gfyg "o d

        ,        2soo eun street, columbia, SC 29201        hoenoung Health, hotecung the Environsn*nt l

l November 22, 1993 Mr. John S. Carter, Technical System Manager I l Environmental Division Duke Power Company l 13339 Hagers Ferry Road Huntersville, N.C. 28078-7929 Re: Use of Molybdate Duke Power co ./ Catawba Nucl ear S t at i on York County

Dear Mr. Carter:

Our Office has received your August 31, 1993 letter prooosing the use of molybdate as a corrosion inhibitor in several of the closed coo' ling water systems at the Duke Power Company / Catawba Nuclear Stat. ion in York County. We understand if this program is successful the level of sodium nitrite, which is currently the main corrosion inhibitor, would significantly be reduced. The molybdate will only be discharged via outfalls 001 and. 002 to Lake Wylie on an intermittent frequency during system maintenance or possible leaks, Based on a review of the information provided, we approve your request to limit nitrite at Outfalls 001 and 002 to a daily maximum of less than 4.3 mg/l, the no observed effect concentration (N0EC), per occurrence. If you should have any questions, please call me at (803)734-5247. l Sincerely, l ~ 0% th . Q, I knothy M. Eleazer Environmental Engineer Associate Industrial and Agricultural Wastewater' Division , TNEM@!.EfECi10NSEM THE/ebs NOV 2 91993 cc: Al Williams, Catawba Eac U M Vernon Beaty, Water Quality Monitoring U :nT1.2 DATE

       ,                                                                                               G 6 ..' . _ _
                                                                                                                 ..w NO)lk        _

o ,,,,,,, ,m,

Il i 1 DukeIbwer Company . D.L Rtus \ Catawba Nuclear Generation Department \' ice 14esident l 4800 ConcordRaad (803)83I3205 Oflice

                 ~ York, SC29745                                                         (803)8313426 Far               )

l

DUKEPOWER December 13, 1993 U. S. Nuclear Regalatory Commission ATTN: Documcat Control Desk Washington.1]C 20555

Subject:

Catawba Nuclear Station Docket Nos. 50-413 and 50-414 Environmental Protection Plan Reporting The Environmental Protection Plan ( Appendix B to the Catawba Facility Operating License) requires that changes to the NPDES Permit or State Certification be reported to the NRC within thirty (30) days following the date the change is approved. Attached please find approval for the~ discharge of Molybdate issued by the South. - Carolina Department of Health and Environmental Control November 22, 1993. ' l l Very truly yours ! D. L. Rehn Attachments JTH/EPP 1993 l l bOlf Y,' & ff T p(Md lh{Y

U. S. Nuclear Regulatory Commission December 13, 1993 Page 2 xc: S. D. Ebneter Regional Administrator, Region II R. J. Freudenberger Senior Resident Inspector Catawba Nuclear Station R. E. Martin, ONRR e

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l ll l Duke hurr Company Genention kraces uepartment l 13339 Hagers Ferrv Road l Huntersalle NC28078-7929 DLUU? POWER l December 28, 1993 Mr. Timothy M. Eleazer Industrial and Agricultural Wastewater Division l l South Carolina Department of Health and Environmental Control l 2600 Bull Street l Columbia, SC 29201

Subject:

Catawba Nuclear Station -NPDES Permit No. SC0004278-Steam Generator Chemical Metal Cleaning File: CN-208.20 Certified: 068 519 062 .

Dear Mr. Eleazer:

l This letter is being written to request a one time approval to discharge a maintenance compound used to chemically clean the steam l generators. In May 1994 Duke Power Company will perform a steam generator chemical cleaning. Four steam generators for Catawba Unit 2 will be cleaned during this process. Treatment Chemicals Ethylenediamine (EDA) and ammonium carbonate (NH.) 2CO have been 3 selected as the treatment chemicals to use for the cleaning. These compounds have been selected to attack the copper and iron build up within the steam generator and not to attack the base metals. EDA is less aggressive than the more commonly used chemical of EDTA (diammonium salt). The EDTA has been commonly used for this type of cleaning and. if used would yield significantly higher concentrations of copper and iron in the resulting wastewater. Please find attached information on EDA and ammonia carbonate required by the permit (Part III, item 9) which is necessary to obtain approval. Wastewater Treatment Temporary treatment equipment will be used to treat this wastewater prior to discharge. A separate submittal will be made to describe

     -,-,m-

i l Page #2 , CNS Steam Generator Cleaning I the temporary treatment in order to obtain the necessary State approvals. Prior to finalizing the temporary treatment system design, it is necessary to know if additional monitoring above the existing permit requirements is going to be imposed. As a result of this cleaning approximately 40,000 gallons (0.04 MG) of liquid waste will be generated. The approximate composition of this waste will be 3% by weight ammonium carbonate (NH ) 2 cop 3 % by 4 i weight ethylenediamine (EDA), 400 ppm copper, 50 ppm iron, and the balanced deionized water. The wastewater will be slightly radioactive. Prior to any treatment, the waste will be analyzed to determine if it is hazardous. Upon determining that the waste is non-hazardous it will be treated to comply with the effluent limits coi;tained in j the NPDES permit for this facility. ' The liquid waste will be processed through internal outfall 004 and then to Lake Wylie by means of outfall 001. Outfall 004 has . permit limits of 1 ppm for copper and 1 ppm for iron. Precipitation by chemical coagulation coupled with filtration is the anticipated process to be used to remove the metals prior to discharge. The process would be composed of chemical addition  ; equipment, coagulation / settling tank, filter press, and a monitor  ! tank. Each tank would be sampled and analyzed to verify compliance prior to discharge. Along with existing limits, the pH at outfall 001 will be maintained between 6.0 and 8.0. Attached to this memo please find a flow diagram describing the work to be performed. Summary Duke Power is requesting approval to use EDA and ammonium carbonate for use in chemically cleaning the steam generators for Unit 2. Additionally, it is requested that the State determine if any additional monitoring will be imposed due to this discharge. Duke Power will then finalize our treatment system and submit the necessary information to the State for review. If you need additional information or have any questions please call John Estridge at (704) 875-5965. Sincerely, 9 ~ k --% ohn Carter, Technical System Manager Environmental Division, Water Protection jte/270 i

l f CNSSteamGeneratorclefnin cc: NRC Document Distribution l Attachments: #1 Chemical Inf r tion and MSDS Sheets

                #2 Flow Diagram
                                                                                              \
                                                                                              \
                                                                                              )

4 i I l l I l 1

ATTACHMENT 1 CATAWBA NUCLEAR STATION. PROPOSED MAINTENANCE CHEMICAL LIMIT DECEMBER 28, 1993 NPDES PERMIT SC0004278 PART III ITEM 9 REQUIREMENTS

1) NAME AND GENERAL COMPOSITION OF THE MAINTENANCE CHEMICAL a) Ethylenediamine (EDA) b) Ammonium Carbonate (NH.) 2CO 3
2) QUANTITIES TO BE USED ,

40,000 gallons of a solution of approximately 3% EDA and 3% Ammonium Carbonate will be used for the cleaning.

3) FREQUENCY OF USE This compound will be used for a single chemical metal cleaning of the steam generators for Catawba Unit #2.
4) PROPOSED DISCHARGE CONCENTRATION i

The discharge at outfall 004 will be less than 1.0 ppm iron, I and 1.0 ppm copper.  : The Discharge at Outfall 001 will have a pH between 6.0 and 8.0. The EDA concentration will be less than 1.0 mg/1, Total ammonia will be maintained less than 1.0 mg/1.

5) EPA REGISTRATION NUMBER a) Ethylenediamine. CAS# 000107-15-3 b) Ammonium Carbonate. CAS#506-87-6
6) AQUATIC TOXICITY INFORMATION a) Ethylenediamine.

Acute LC50 Daphnia magna (water flea) 0.88-16 mg/l Pimephales promelas (Fathead Minnow) 116-220 mg/l b) Ammonium Carbonate. When mixed with water, ammonium carbonate dissociates to ammonia and carbonate. Chronic Daphnid toxicity to unionized ammonia has been reported to vary from 0.3 to 1.2 mg/1. The. toxicity of total ammonia (mg/l NH3 ) is typically higher than that of unionized ammonia. Please see the attached EPA

document Qpality Criteria for Water 1986. EPA 440/5-86-001. This document shows a 4-day avorage concentrations for total ammonia at 20 C and a pH of 8.0 Std. Units to have a toxicity of 1.31 mg/l (see Table 2, section B - Salmonids and Other Sensitive Coldwater Species Absent) j l l l l

  .w      odamus m x u 4 w m u n a-as c.a                                     sie                        ,

a m esas4 m,,, a / occ za '92 01:42m tatu. l p, ag NATERIAL SAFETY DATA SHEET Dow Chemical U.S.A.* Nidland. NI 411674 Emergency Phone: 517-536-4400 [2$1 Product code: 30421 Page 1 Product Mmen: ETHYLENEDIANINE . Effective Datei 08/17/59 Dats Printed: 11/22/90 MSDS:00016)

1. INGitEDIENTS: (5 w/w, unless otherwise noted) '

Ethylenedlemina f CAS# 000107-15-3 994 This document la prepared pursuant to the 05HA Hazard communication standard (29 CFR 1910.1200) . In addition ether substances not 'Hazardousi per this 0$8A Standaird may be listed. Where proprietary inarodient shows, the Identity may be neds evallable as provided in this standard. 4

2. PHYSICAL DATAI TOILING P0lNT: 23SF. 115C VAP. PRESS: 10 nrnHg 9 20C VAP. OtN$lTY: 2.07 .

SQL. IN WATER: Mixes completely.

                            $P. GRAVITYI 0.B93-0 906 15/15C FREEZING PolNT:                             ,1C APPEARANCE: rless                      Colo$17liquid.

000A Asumoniacal odor.

3. FIRE Ale EXPLOSION HAZARD DATA:

FLASH POINTI 101f. 36C MITH00 U1EDI PMCC FLAMMAILE LIMIT 3 - LFLI 2.6% 0100C UFL: 14.2% 4 1000 ' EXTlHOUISHlHQ MEDI A Water fog, alcohol foam, CO2, dry chemical. FIRE 5, EXPLOSION HAZARDS: Not avullable. FIRt-FIGHTlWS EQUIPMENTS Use full protective clothing (see (Co'ntInued on Page 2) * (R) Indicates a Trademerk of The Dow Chemical Company , 6 An Operating Unit of The Dow Chemical Company

  • 4 2 41 : :E4 1.1 [ 7 - 2RF
  • H'1% :t; Eti t?-21 24I lj101c-r10 sq: Aq ifm

ncu ny:- mecor ren wie # 12-23-92 a 4een : j 2sa u m + sse20 :: x l IEC 23 '92 01843oM DMR P. :V7 l NATERIAL SAFETY DATA S H E' E T Dow Chemical U.S.A.* Nidland. MI 48674 Emergency Phonet 517-636-4400 P('oduct Codel 30h21 Paget 2 Product W ee: ETHYLENEDIANINE Effective Cata: 08/17/83 Date Printed: 11/2.2/90 M801:000161 I 1

           .3. FIRE A6C IXPl.05!0N HAZARD DATAi (CONT!ItaED)                                                                                               '

section 8) and a positive pressure! self-con:sined bresthing apparatus.

4. REACTIVITY DATA: .

STAslLITY: (CONDITIONS TO AVOIO) Autolgnition temperature in air le approximately 763F, 406C. INCOMPATIBILITY: ($PECIFIC MATERI AL5 TO AVOID) Acide exidlaing

  • saterlst halogenated organic courpounds, aldehydes, ketones, and acrylates. Mixture with these matarleis 6t111 result in a temperature end/or pressure Increase.
                                                                                                                                                      ~

HAZARD 0U$ DECOMPOSITION PRODUCTS: Nitrogen oxides when burned.

                                                                                                                                                           \

HAZARDOUS p0LYMIRIZATION: Will not occur. 1

5. ENV!a0ltiENTAL AND DISPOSAL INFolBIATION:  ;
              .       ACTION TO TAKE FOR SPil.LS/ LEAKS: Large spill a dlke u
  • l dilute with water. Pump into appropriate con:elners.p andSmall spill - dilute with water and recover er use noncombustible absorbant material / sand and shovel into suitable containers.

Ol5P05AL METH00s Large quantitles could be recovered. OtherWltee  ! Incinerate in accordance with local regulatinns. Do not dump into newers, on the ground or into any body of water. The Dow Chemical Company may be contacted for advice.

6. HEALTH HAZARD DATA:

tYt May cause esvere irritation with cornest inlury which may I result in permanent Impairment of vision, eviin blindness. Vapors may irritate eyes. (Continuest on Page 3) (R) Indicates a Trademark of The Dow Chemical CompatW

  • An operating Unit of The Dow Chem! cal Company E 84 :E9 111 W &q2R{' t PM :ti Di-r&2 t ! Dil 1L10TMO gf1:MI lil E

RCV BYtXECDC E.ECTISt W10 H2-2342 3t & M j 250 932D wenng s, 4 ECC 23 '92 ,01:43PM DC4,E1J. [ P u7 NATERIAL SAFETY DATA S H E:E T

   .               Dow Chemical U.S.A.*                 Widland. WI 48674 IDnergency Phone: 517-636-4400 Product Code: 30421                                    Pages 3 Product Name: ETHYLENEDIANINE                                                                                      .

Effective Detma '06/17/89 Date Printed: 11/22/90 M808:000161 E

6. HEALTH HAZARD DATA: (CDNTINUED) r SKIN CONTACT: Short single exposure *may cause lievere skin burns.

Has caused ellergic skin reactions in humans, OCT Classifications corrosive. SKIN AB80RPT10N: A single prolonted exposure f6ay result in the material being abscriisd in harmful amounts. The 1,D50 for skin

                        ,-           absorption la rabbits is 657 as/kg.

INGESTION: Single dess oret tonicity is low to moderate. Inesetion may eeuse gestralnteetInoi irritation or ulceration. May cause severe burns of the reouth and throat. The LD50 Ie 1%0 mg/kg for rats and 470 mg/kg for guinea pigt.

     .                             INHAl.ATION: Excessive vapor concentrations are attelnable arid could be hazardous on single expoeure. Excainalve exposure may cause nevere irritation to the upper respiratory tract.- Ma cause roepiratory sensitisation in susceptible Individusts.y SYSTEMIC & OTHER LFFICTS: Repeated exeeaalve axposurse may cause                                       .

Ilver and animal kidne injury. Old not cause concer in long-term studies.y Birth defecte era unlIkely. Exposures having no effect on the mother should have no effect on the fetus. Old not cause birth defects In anitsalal other effects were seen in the fetus only at doses which caused toxic effect's to the mother, in animal studies, hos shown not to Interfere with reproduction. Preponderance of negative det.t Indicates alnlmel or no mutagenic potential.

7. FIR 5T AID:

EYE 8s Ismediate at1d continuous irrigation witt flowing water for at least 0 minutes is Imperative. Prompt m6 dical consultation is essent al. SKIN: In case.cf contset. Immediately flush skin with plenty of water for at least 15 minutes while removing contaminated clothing and shoes. Call a physician If Irritetton persists. (Continued on Page 4) (R) Indicates a Trademark of The Dow Chantoel Corepent

e. An Operating Unit of The Dow Cheruleal Company o

O ti it 2 F.9 IJ!^O %QE

  • t P?.ES. : 6 i'6-nE .? ! ! 31l 3110'bt40 GO : MI l t IT.,
                    .      .                   .-=    .-            .          -                    - . _        --__- -- - -_

l RCV DYsFCRTFX TCLICOPIER 70io :12-23-92 3 47Ftt : ,, 250 93234 m;a g DCC 23 '92 018 44Pf1 LOELL P. Tv7 NATERIAL SAFETT DATA SHdET . Dow Chemical U.S.A.* Widland. WI 48674 Emergency Phone: 517-836-4400

                                                    . Product code       30411           Pages 1.                    .

Praiuct Namor ETHYLENEDIANINE Effective Datet 06/17/89 Date Printed 11/22/30 MSD$8000161

7. FIltST AID: (CIRTINllED) J l

t Wash clothing before reuse. Destroy contaalasted shoes and other leather itema or articles which cannot be decantaalneted. INGESTION: Do not Induce vomiting. Gtve large amounts of water or milk if available and transport to isodical facility. INHALATIOWs Aamove to fresh air if offsets occur. Consult a phyalelan.

  • NOTE TO PHY$1CIANi corrosive. May cause strlcture, if lavage is performede suggest endotrachest and/or esophagoscopio control.

If burn is present, treat as any thermal burn, after . decontamination. No speelfic entidote. Supportive care. Treatment based on Judgment of the phyalcian in response to reactions of the patlant. Excessive exposure may aggravate preexisting asthma, liver and kidney disease.

8. MAICLINil PRECAUTIGts:

EXPOSURE GUIDELINE (S): ACGlH TLV and OSHA PE'L are 10 ppa. VENTILATION: Control airborne concentrations Imlow the exposure guideline. Use only w'Ith adequate. ventilation. Local exhaust ventilation may be necessary for some operatiotis. RESPIRATORY PROTICTION: Atmospheric levels should.be maintained below the exposure guldeline. When respiratory prote$ tion is

  ,                required for sorteln oporttlone, use en approved sir purifying respirator.

SKIN PROTECTION: Use protective clothing Impervlous to this material. Selection of specific iteras such as gloves, boots, aproni or full-body sult will depend on operetten. Wear a face-shlald which allows use of chemical goggles, or wear a full-f ace respirator to protect f ace and eyes when there is any liksilhood of splashes. $afety shower should os located in llamediate work area. Remove contaminated clothing immediately. (Continued on Page 50 . (R) Indicataa a Tradecierk of The Dow Chemical Company e An Operating Unit of The Dow Chaelcul Carapany 4 5 tt!E9 11I~A --W:fr. te% : 6 iM-R MII! :st i 7110 T M O GO:M{ lt G;.

l RCV BY t t2fRCtti TELECOPIER 7010 :12-23-92 334!2*M . 8 j 2:50 9'5234 E5FI2ft:88 6 ICC 23 *92 01 45PM D0411. f P.Cv7

                                                                              ?

NATERIAL SAFETY DATA S H ETE T Dow Chemical U.S.A.* Widland, WI 48674 Energency Phone: 517-636-4400 Product Code: 301:21 Paget 5 Product Name: ETHYLENEDIANINE Effective Datas 08/17/89 Date Printed: 11/21/90 M5D5:000161

8. HANDLING PRECAUTIGtS: (CCMTINUED) f wash skin area wrth soap and water / and launier clothing before )

reuse. Cchtuminated leather items. such as shoes, belte end watchhands, should he removed and destroyed. l EVE PROTECTION: Use chemical gog  ! allows use of chemical gogglas,gles.' or wear aWear full-face a face-shleid respirator which to protest f ace e'nd eyes when there is any likelihood of splashes. If vapor exposure causes eye discasfort, use a full-

  • face respirator. Eye Wash fountain should be located in lamediate work erse.
9. ADDITIONAL INFCIDETINI ,

RESUl.ATORY REQUIRtMENTS: SARA HAZARD CAft00RY: This product has been reviewed according to the EPA 'Harard Categories' pranulgated under Sections 311 and 312 of the Superrund Amendment and Resuthorisation Act of 1986 (SARA Title Ill) and is conalderade under applicable definitions, to meet the following categorles: An Insnedlste health hasard A delayed health hazard A fire hasard tPLCI Ai. PRICAllfl0NS TO BE TAKIN IN MANDI,lNO AN) STORAGEt Ground all transfer agul'pment. Store below 120F, 4:)C and above 517. 11C. Hold bulk storage under nitrogen blenkst. Copper and alloys of copper should not be used as they are quickly corroded by the product. A$05 STATU$t Revised Section 9 . (Continued on Page 6) l lR) Indicates a Trademark of The Dow Chemical Company l l i

  • An Operatina Unit of The Dow Chemical Company 9 11 :E9 11! O rICOD' I F113 : O I 26-9?-2I 311 '4110WO 60: L8 l H T:.
  - o . % , , . r , m c,< wiu : u.-am s e ei :

cas 93234 sseae:u r occ as ><3a ou4m1 rACLL P. 74 NATERIAL SAFETY 0ATA S H E~E T

                                                                               .n............          ..... ... ...

Dow Chemical U.S.A.* Midland, MI 48674 Energency Phone: 517-636-4400 Product Code 30411 Page 6 ProductName: ETHYLEMEDIANINE , Effective Date: 08/17/89 Date Printed: 11/12/90 MSDS 1000161 4

                                                                             /
                                                         -                    t (R) Indicates s' Trademark of The Dow Chemical Company The Information Heroin is QIvan in Good Faith, But No Warranty.

Express or linplied, is Made. Consult The Dew Chemical Company For Further Information, e An Operating Unit of The Dow Chemloal Company I

   !. It 'E9 11 I TO               *:' 'tr
                                      ,
  • 6.p-c3 : O I 26--9?-2 I ' 31 7110 W 3G :al ; .s.r] [ i g;.
 .-   ?*                                  TO:17043823797 FROM: BASIC OEMICAISococ00cx                                                           MAY 13 1993 1:50PM tt602 P.02
    ~
                                              ' Ammonium' Carbonate          .*

Tecimical Bulletin Physical properties Chemical behavior Synonyme: Diammonium carbonate Ammonium carbonate 69 8 while, Ammonium carbonolo givoc off

                *         "'          I ht:    9 crystalline  powder      with   a  strong           carbon  dioxide on-contact with odor of ammonia. It decomposes                      acids and gaseous ammonia on into ammonia, carbon dicedde, and contact with alkalis.

water at tempelaturos owr 59'C M. mm. and many d M Ammonium carponato is readily alloys are corroded by ammonium soluble In water yielding slightly carbonata a M ne W ut h s.. Stainless steel, aluminum. Diass, Average chemical analysis cescs, mh eM MS are Ammonia .'. . 3fa% (30.5-325%) to ammh.NWa Carbon dioxido . . . . . . 55.6% Ammonium carbonate reacts with Wator . . . . . . . . . . . . . . ~ 13.l% nitrites, eg, sodium nitrite at room Wator insolubles. . . . . . . 0.00;% iemperatura The4eachon may bo Residue onignition accompanied by flames and be (sulfate). . . . . . . . . 1.0.00f% explosiva fron . .... . . . . . 0.000S% Arscric . . . . . . . . . . .<0.0001% Applications

  • Load. ..... . .<0.0001% in chemical and pharmacoutical Zinc .. .. . ....<0.0001% industnos it is used for analytical Copper . . . ....<0.000'  % purposos and in the production of Sulfate . . ..... . 0.000:% otDaniccompounds, ag.,betroopdes Chloride . . . . . . . . . . 0.0001% and in the manufacture of catalysts BASF ammonium carbonate con-forms to the purity requirements al the Food Chemical Codex.

Average grain size distribuflor i 00 0.2mm . . . . . . . ... 0.2 0.5mm. . . . . . 00 Over 05mm. . . . . . . 20 % Ruk dansity la aprrommatedy 900 N/ms Chemical Intermodlatec l . i 1 -. --. . .. -- -

l FRQ1:DASIC CHEMICALSX>0CooodA) TO:17043823797 MAY 13, 1993 1:50PM t:G12 P,03 It is also used as a blowin0 agent Stonsga , Imrutw( fe the biortna: ion and dera in tho manufacture d coifutar Ammonium carbonate should /conti.ud i tiis buiscon are presented in plastics and foam rubber, in the ncwr be stored in proximity to marxsfactura d casoin dyes, casoin sodium nitrite (soo chemical

j. % $ $ $'NMW
                                                                                            . corotionsa saios unie.s specdwy incor.

glues, and other adheslws, as well behavior), i rumed inw Order MmMoomart as an additim to photographic SNIU1I Ammonium carbonate loses its A E QS J OP0f8- froc' flowing propert es within a few suun mwo umWDN cR Q4A ' In the textilo industryit is used for , days and tonds to cake. This does L T M $ $1E E, , neutralizing in the carbonizabon not afIoct the chemical composit'on A swa ou pt PuHeosti. ort uw sAlo process;in dyoing, as a base that or usability. (WOHWlQN. (WA oO Pno00 cts CAN DE USFn WITHnuiINFTtlNGING PATENTS OF can bs readily removed by boiling *. Ammonitm carbonate must be narc twn Es, and as a noutralizing agent. kept in ti 0htfy closed containers in in the cosmetic Industry it is usod e cool, dry placa if it is cxposod to * "# C***

  • as an additlw to sharnpoos and sir, gaseous arnmonia and carbon l halt lotions as well as in srnolling dioxldo are liberated with an e salts. attendant loss in weight.

Ammonium carbonate is also usod p,gg / as a leawning agent for biscuits W Mes~ Ammonium carbonato is sdd in 50 kg bags as weit as iri 52 kg and it is also used in tho manufacture 145 kg drums. d strippers for remwin0 fem d l rickd and copper from steel, l plastics, and zinc substrates 4 I I l l i

                                                                                                                                               'l l
                                                                                                          !                                      I i

l DASF Co4 potation 100 Cherry' Hit Rood Parsh

  • New Jersey 07054

(?01)316 670 hoo 420 0 02 i i BA,SF 1

                                                                                                                                                 )

h FIU1: BASIC CHEt11CALSX500000d>J TO:17043823797 t1AY 13,1733 1:51PM 8:602 P.04 l b MATERIAL SAFETY DATA SliEET page i  !

                                                                                                                                                          \

l BASF CORPORATION CHEMICALS DIV. 100 CHERRY HILL ROAD PARSIPPANY,, NJ 07054 Original Dato: 02/11/1993 (800) 669-BASF Rovinion Date: 02/11/1993 Emergonoy Telephones (800)I424-9300 (CEEMTREC)

                                                                  '(800)#832-EELP (;3ASF Hot:line)                                                         l l

BOTH NUMBERS ARE AVMLABLE DAYS, NIGHTS, NERKBMDS, & BOLIDAYS.

                                                           .                               l-                                                             1 SECTION 1 - PRODUCT INFORMATIQN Product 2n: NCI 019741                                                                                                                        )

A!440NIUM CARBONATE POWDER

                                                                                                                                                       -   1 Common Chemical Name                                                                                                                          '

Ammonium Carbonate - l I Synonyms 1

       - Crystal Ammonia                                                                                                                                  j Molecular Formulas

( (NH)4 ) (2) CO(3) Molocular Wt.: 196.1 Chemical Family: Inorganics i SECTION 2 - INGREDIENTS I -- chemical Namet CAS (1 Amounts PEL/TLV Datat Ammonttia cartxxute HC 506 87 6 100.0 K ICT CSTA8LISHED I

  • Donotes an IAAC listed carcinogen 0 - Cenotes an KTP listed cercloogen 0 cenotes an OSHA carcinogen H
  • Denotes an OskA heetth heterd g P - Denotes ao OSliA (tysicat horerd

( , C - cenotes a CCRCLA listed chemical See section 10A for SARA 313 (lat. i I _ . _ _ _ , . . . . , . , _ ,__.,-__-.,m..,_,._

FRON: BASIC OEMiCALSXXXXXXXW TO:170438237J7 MAY 13,1933 1:51PM 11602 P.OS Product In: NCI 019741 Page 2 . AMMONIUM CARBONATE POWDER l SECTION 3 - PilYSICAL PROPERTIES colora Colorless . Form /Appoarances crystal 11no Platos Odor Ammonia l Typical Low-RANGE-High U. O. M. j Spo. Gravityt NOT AVAILABLE ' l Bulk Density 000 -850 KG/CU. M l pH 9 SU l pH motbods 100 G/L H2O . l Typical Low-RANGB-High Dog. 9 Pressure Boiling Pts NOT AVAILABM rrassing Pts NOT AVAILABLE . Dooomp. Tmp NOT AVAILhBLE l C solubility in Water DoDcription: Soluble , Vapor Pressure 60 MILLIBARS 0 20 DEG. C l SECTION 4 - FIRE AND EXPLOSION DATA Typical Low-RANGE-High Deg. Method Plash Points NOT AVAILABLE Autoignitions NOT AVAILABLE i Extinguinhing Media: Use water fog, foain or dry chernical extinguishing media. Fire Fighting Procedurons i Firefighters should be equipped with self-containbd broathing apparatus and turn out gear. Unusual Hazards: Decomposes to aramonia and CO2 at temperatures >.'.36 F. f i 4

                                                                                          +--  ~    --
    .-    FR&t: BASIC CIEMICALSXXXXXXXW  TO:17043823757              MAY 13, 1933 L:52PM 12602 P.06 e'     s
  ,e Product ID: NC1019741                                                              Page 3 I

AMMONIUN CARBONATE POWDER l SECTION'S - HEALTH EFFECTS

                                                        /

Routes of entry for solids and ligdida inclute eye and skin contact, ingestion and inhalation. Routon of ertry for gasses include inhalation and eye and skin contact. Toxicology Test Datas Rat, Oral LD50 - 2150 MG/KG Hoderately Toxic , Acute Overexposure Effects: Contact with the eyes and skin may result in sligl t irritation. Severe overexposure to ammonia may cause pulmonar3 odema and death , Airborno concentrations of 32 to 50 ppm have been reported to cause nacal drynoss while noso, throat, and chest irritetion have been noted at levels as low as 72 ppm.

  ' Chronic overexposure Erfacts:

There are no known chronic effects associated with this material. First Aid Procedures - Skins Wash affected areas with soap and water. Remove and launder contaminated clothing before reuse. If irritation developa, get medical attention. First Aid Procedures - Byes! Immediately wash eyes with running water for 15 m[nutes. If irritation develops, get medical attention. l Firot Aid Procedures - Ingestiont If owallowed, dilute with water and immediately ipduce vomiting. Never give fluids or induce vomiting if the victim 10 unconscious or having convulsions. Got immediate medical attentihn. First Aid Procedures - Inhalation i 1 Move to fresh air. Aid in breathing, if nococcary, and got immediate medical attention. First Aid Procedures - Notes to Physicianst Not applicable. FiratAidProceduras-AggravatedMedicalConditihns No data is available which addresses medical cond tions that are I l E

i FROr1: BASIC CHEt11CALSX>000000)J TD*17043823797 t1AY 13. 1993 1:52PM IG2 P.07 s I

                                                                   -       i                                              ,

l l L I l (,ProductID: NC1019741 l

                                                                                         .         Page 4 AMMONIUM CARBONATE POWDER                                       !

I SECTION 5 - HEALTil EFFECTS (Co t.) generally recognized as being aggravate'd by expontre to this product. Pleaso refer to Section 5 (Effects of Overexposuro) for effects observed in animals. First Aid Procedures - Spoo'al i Precautionst Not applicable. l i SECTION 6 - REACTIVITY DATA  ! Reactivity - Stability Data Unstable (,, R$ activity - Incompatabilityt Sodium nitrite and nitrate. Reactivity - Conditions / Hazards to Avold Excessive temperatures. R3 activity - Hazardous Decomposition /Polymerizatio n Hazardous Decomposition Products: CO2 and NH3. Polymerization: Does not occur. Reactivity - Corrosive Propertioat Corrosive. Reactivity - Oxidizer Propertiest f Not an oxidizer i SECTION 7 - PERSONAL PROTECT 10N  ; l Personal Protection - Clothing: l Gloves, coveralls, apron, and boots as necessary to prevent contact. k- f i I I l _- . . . .. .- .-

an1:aasic aementsxxx>ooom m:1704302R97 MY 13. 1993 L:53PM #602 P.00 4

                                                                                                               /

l' 2 , Product ID: NCI O 19741 - Pago 5 ANM0NIUN CARBOMTE PQWDER Qi 3 . , d,( W .J.; ; ; 1:.d . : .1. ; :. ; ; L.'..it' : hl1 i: .: ..E' SECTION 7 - PERSONAL PROTECTION (Cont.) l l Parsonal Protection - Byes 'f Chemical Goggles I Parsonal Protection . Respiration: j If ducts are generated, wear an approved dust respirator. j Personal Protection - Ventilations

                                                                                                                                  ~      *

? Uce local exhaust to control dusts. i I Parsonal Protection - Explosion Proofings l Soc Section 4 - Fire and Explosion Data. I ] , other Personal Protection Datat J Eyewash fountains and safety showers must be easily accessibie. J ( Shower after handling. . j l SECTION 8 - SPILL-LEAK /ENVIRONNENTAL i I spill / Leak Procedures - Generals l j spills should be contained and placed in a suitable container for disposal. This material contains a CERCLA ("SupeEfund") regulated chemical subject to reporting requirements. spill / Leak Proceduras - Waste Disposal: Dispose of waste in accordanoo Vith all state and local regulations. l Do not discharge into waterways ,or sewer systems with out proper 1 authority. l l i 1 4 Spill / Leak Procedures - Container Disposalt j RCRAonptycontaincramaybelandfilledatalicehsedfacility. , Recommend crushing or other means to prevent unauphorized reuse. l ! Other containers must bo disposed of in a RCRA licensed facility. Ib SECTION 9 - STORAGE AND llANDLING I' .t t ) 1

      ,. 0-MLI1:%IC MrtiCHLSXXX)o00GN                                          lu: h04J82f/tu                                                                                       tvW 13, 1993 1:53Pr1               **602           P.09
                                                                                   ~

l s  ; (,ProductID: NCl 019741 _, Page 6 AMMONIUN CARBONATE POWDER I

         ;.y.:   ., .. .      . .. . L..                          .
                                                                                    ..:':                  :         .i.: -                    .

SECTION 9 - STORAGE AND HANDLING (Cont.) storage and Handling - General

  • Keep away from heat, sparks and open f[ awns.

SECTION 10A - FEDERAL REGULATORY INFORMATION T8CA Inventory status ) Listed on Inventory YES RORA Haz. Wasta No.: NA

  .      CERCLA:    YES       Reportable Qty.: (If YES)                                                                                       5000                                      LBS

( EPA Registration No.: , SECTION 100 - OTHER REGULATORY INFORMATION No applicable data for this section. SECTION 10D - ADDITIONAL REGULATORY TEXT No applicable data for this section. l L

       ,      mm . ~ u ,u , , u m--         .u...e-moca...                ...,..                . . , , . . , ..,c              ,,,,

I-i ." l I { (, Product zo: NCI 019741 , Page 7 j AMMONIUM CARBONATE POWDER , l h ; r i .;;; w;9.m;;w ;i: L gr.f,;. L [. . ; .. SECTION 11 - TRANSPORTATION INFORMATION  : DOT Proper Shipping Namet , i NONE f DOT Technical Names NONE ' ! DOT Primavy Hazard class DOT Secondary Hazard Class 4 } CIABS 9 IF ONLY SHIPPED IN IT'S RQ NONE DOT Label Re'quireds NONE , { DOT Placard Requirod: DOT Poison Cohatituentt 4 NONE i s. BASF Commodity codes! '354 UN/NA Codet M/A E/R dtlider N/A i i SECTION 11B - INTERNATIONAL TRANSlORTATION i No available data for this section. i 4 i . is a regictered trademark of BASF Corporation.

         " is'a trademark of BASF Corporation.

i j WHILE BASF OORPORATION BELIEVBS THE DATA SET FORTT HEREIN ARE

,        ACCURATE AS THE DATE HEREOF, BASP CORPORATION MAKBS NO WARRANTY WITH RESPECT THERETO AND EXPRESSINGLY DISCLAIMS ALL LIABILITY FOR
RELIANCE T!!EREON. SUCH DATA ARE OFFERED SOLELY FpR CONSIDERATION, INVESTIGATION, AND VERIFICATION. i
l J i 1
END OF DATA SilEET i
                                                                                 , , , . , ,  .          .,       , - -          r-- - ,   , .-...

United Sures Off.ce of Water

    .                                         En roeental Protsetion        .

P tations and Standards ( g **"' EPA 440/5-86-001 l ! QUALITY CRITERIA for WATER 1986 -

                                                                                                                                     ~

i( , N = 9 tO ~ i mm - i . l ra i i

                                         %m a i,

N i ca.s ,tssstes a was eset test-ae- =

f 3) AMMONIA

SUMMARY

All concentrations used herein are expressed as un-ionized ammonia (NH3 ), because NH 3, not the ammonium ion {NH4 +) has been demonstrated to be the principal toxic form of ammonia. The data used in deriving criteria are predominantly from flow through tests in which ammonia concentrations were mea'sured. Ammonia was reported to be acutely toxic to freshwater organisms at concentrations (uncorrected for pH) ranging from 0.53 to 22.8 mg/L NH3 for 19 invertebrate species representing 14 families and ' 16 genera and from 0.083. to 4.60 mg/L NH 3 for 29 fish species _, from'9 families and 18 genera. Among fish species, reported 96- - l hour LC50 ranged from 0.083 to 1.09 mg/L for salmonids and from , l 0.14 to 4.60 mg/L NH3 for nonsalmonids. Reported data from'

                                                                                                                                                           )

chronic tests on ammonia with two freshwater invertebrate .j species, both daphnids, showed ~4ictE at co h - ations- i (uncorrected for pH) ranging f om 0.304 to 1.2 mg/L NH3 nd with nine freshwater fish species, rom five familj. and seven genera, ranging from 0.0017 to 0.612 mg/L NH3. concentrations of ammonia acutely toxic to fishes may cause loss of equilibrium, hyperexcitability, increased breathing, , cardiac output and oxygen uptake, and, in extreme cases, convulsions, coma, and death. At lower concentrations ammonia has many effacts on fishes, including a reduction in hatching sucesss, reduction in growth rate and morphological development, and pathologic changes in tissues of gills, livers, and kidneys. E0'd #46SS433 01 WOdd SS:PI E661-82-330

4 Several factors have been shown to modify acute NH3 toxicity  ;, d in fresh water. Some factors alter the concentration of un-ionized ammonia in the vater by affecting the aqueous ammonia equilibrium, and some factors affect the toxicity of un-ionized ammonia itself, either ameliorating or exacerbating the' effects of ammonia. Factors that have been shown to affect ammonia toxicity include dissolved oxygen concentration, temperature, pH, previous acclimation to ammonia, fluctuating or intermittent l exposures, carbon dioxide concentration, salinity, and the , presence of other toxicants. W,

                                                               ,                   g The most well-studied of these is pH; the acute toxicity of          gs      /       l NH 3 has been shown to increase as pH decreases.       Sufficient data    ( pf exist from toxicity tests conducted at dif ferent pH values to N lf4                     \

l formulate a mathematical expression to describe pH-dependent N l l acute NH 3 toxicity. The very limited amount of data regarding effects of pH on chronic NH 3 toxicity also indicates increasing NH 3 toxicity with decreasing pH, but the data are insufficient t.o derive a broadly applicable toxicity /pH relationship. Data on temperature effects on acute NH 3 toxicity are limited and somewhat variable, but indications are that NH toxicity to fish 3 is greater as temperature decreases. There is no information available regarding t:emperature effects on chronic NH 3 toxicity. Examination of pH and temperature-corrected acuto NH 3 toxicity values among species and genera of freshwater organisms showed that invertebrates are generally more tolerant than fishes, a notable exception being the fingernail clam. There is no clear trend among groups of fish; the several most sensitive 70*d PL6sg433 01 WOdd 6S:PI E66I-3533G

tested species and genera include representatives from diverse families (Salmonidae, cyprinidae, Percidae, and Centrarchidae) . Available chronic toxicity. data for freshwater organisms also indicate invertebrates (cladocerans, one insect species) to be more tolerant than fishes, again with the exception of the fingernail clam. When corrected for the presumed effects of temperature and pH, there is also no clear trend amon7 groups of fish for chronic toxicity values, the most sensitive species including representatives from five families (Salmonidae, Cyprinidae, Ictaluridae, Centrarchidae, and Catostomidae) and 4 having chronic values ranging by not much more than a factor or two. The range of acute-chronic ratios for 10 species from G families was 3 to 43, and acute-chronic ratios were higher for the species having chronic tolerance below the median. Available data indicate that differences in sensitivities between warm and coldwater families of aquatic organisms are inadequate  ! to warrant discrimination in the national ammonia criterion between bodies of water with " warm" and "co l dwatie r" fishes; rather, effects of organism sensitivities on the criterion are nest appropriately handled by site-specific criteria derivation procedures. for concentrations of NH 3 Data toxic to freshwater phytoplankton and vascular plants, although limited, indicate that. freshwater pl' ant species are appreciably more tolerant to NH 3 than are invertebrates or fishes. The ammonia criterion appropriate for the protection of aquatic animals will therefore in all likelihood be sufficiently protective of plant life. SO'd 046S5483 01 m 6S M E66 W N

I Available acute and chronic data for ammonia with saltwater I organisms are very limited, and insufficient to derive a saltwater criterion. A few saltwater invertebrate species have been tested, and the prawn Macrobrachium rosenbergii was the most sensitive. The few saltwater fishes tested suggest greater sensitivity than freshwater fishes. Acute toxicity of NH 3 appears to be greater at low pH values, similar to findings in freshwater. Data for saltwater plant species are linited to diatoms, which appear to be more sensitive than the sa? twater invertebrates for which data are available. - More quantitative information needs to be published on the toxicity of' ammonia to aquatic life, several key research needs must be addressed to provide a'more complete assessment of ammonia toxicity. These are: (1) acute tests with additional 4 saltwater fish species and saltwater invertebrate species; (2) ' life-cycle and early life-stage tests with representative freshwater and saltwater organisms from different families, with particular attention to trends of acute-chronic ratios; (3) fluctuating and intermittent exposure tests with a variety of species and exposure. patterns; (4) more complete tests of the individual and combined effects of pH and temperature, especially for chronic toxicity; (5) more histopathological and histochemical research with fishes, which~would provide a rapid means of identifying and quantifying sublethal ammonia effects; and (6) studies on effects of dissolved and suspended solids on acute and chronic toxicity. 90*d PL6SS688 01 WOW 6S:vI E66I-82-33G

! 1 NATIONAL CRITERIA: The procedures described in the Guidelines for Deriving Numerical National Water Quality Criteria for the Protect.cn of 4 Aquatic Organisms and Their Uses indicate that, except po sibly where a locally important species is very sensitive, freshwater aquatic organisms and their uses should not be affected unacceptably if: (1) the 1-hour

  • average concentration of un-ionized ammonia (in ng/L NH3 ) does not exceed, nore often than once every 3 years on the average, the numerical value given by 0.52/FT/FPH/2, where: '

FT = 100.03(20.TCAP) TCAP $ T $ 30 LOO . 03 (2 0-T) ; O $ T $ TCAP FPH = 1  ; 8 1 pH 3,9 1+107.4-pH 1.25 6.55pH $ 7.7

      -                          TCAP = 20 C; Salmonids or other sensitive coldwater species present
                                        = 25 C; Salmonids and other sensitive coldwater species absent

(*An averaging period of I hour may not be appropriate if excursions of concentrations to greater than 1.5 times the average occur during the hour; in such cases, a shorter averaging - period may be needed.) , (2) the 4-day average concentration of un-ionized ammonia (in mg/L NH3 ) does not exceed, more often than once every 3 years on the average, the average

  • numerical value given by O.SO/FT/FPH/ RATIO, where FT and FPH are as above and:

i

             ,d    PL6SS483          01                             N     N*
  • l RATIO = 16  ; 7.7 5 pH $9 (
                             = 24     in7.7-pH    ._

1+107 4PH  ; 6. 55 pH <:,,7.7 TCAP = 15 C; Salmonids or other sensitive coldwater species present

                                =  20 C; Salmonids and other sensitive coldwater species absent

(*Because these formulas are nonlinear in pH and temperature, the criterion should be the average of separate evaluations of the formulas reflective of th's fluctuations of flow, pH, and temperature within the averaging period; it is not approp,riate'in general to simply apply the formula to average pH, temperature, and flow.) . The extremes for temperature (0, 30) and pH'(6.S, 9) given in the above formulas are absolute. It is not permissible with . current data to conduct any extrapolations beyond these limits. In particular, there is reason to believe that appropriate criteria at pH > 9 will be lower than the pl~ateau between pH 8 and 9 given above. Criteria concentrations for the .pH range 6.5 to 9.0 and the temperature range o c'to 30 C are provided in the following tables. Total ammonia concentrations equivalent to each un-ionized ammonia concentration are also provided in these tables. There are limited data on the effect of temperature on chronic toxicity. EPA will be conducting additional research.on the effects of temperature on ammonia toxicity in order to .fil l perceived data gaps. Because of this uncertainty, additional site-specific information should be developed before these 80'd PL6SSLSS 01 WOdd 00:SI E661-82-33G

criteria are used in wasteload allocation modeling. Fot example, s q the chronic criteria tabulated for sitas lacking salmonids are

less certain at temperatures much below 20 C than those tabulated 4

at temperatures near 20 C. Where the treatment levels needed to i meet these c'riteria below 20 C may be substantial, use of site-specific criteria is strongly suggested. Development of such

                                                                                                 }

criteria should be based upon site-specific toxicity tests. 1 Data available for saltwater species are insufficient to i derive a criterion for saltwater. i I The recommended exceedence frequency of 3 years is the l Agency's best scientific judgment of the average amount of time it will take an unstressed system to recover from a pollution event in which exposure to ammonia exceeds the criterion. A - j stressed system, for example, one in which several. outfalls occur 4 in a limited area, would be expected to' require more time for recovery. 4 The resilience of ecosystems and their ability to recover differ greatly, however, and site-specific criteria may be established if adequate justification is provided. ! The use of criteria in designing waste treatment facilities 4 , l 1 requires the selection"of an appropriate wasteload allocation model. Dynamic models are preferred for the application of these } criteria. Limited data or other factors may make their use a impractical, in which case one should rely on a steady-state model. The Agency recommends the interin use of lQS or lQlO for Criterion Maximum ~ Concentration design flow and 7QS or 7QlO for i the criterion Continuous Concentration design flow in steady-4 state models for unstressed and stressed systems respectively. 60*d P66SSLS3 01 WOdd 00:S1 E661-8P-33G

i 1 (21 e-ear everego concentrations for e=onia.' pu oC 5C to C 15 C 20 C 15 C 30 C c A. Salsonles or Other Sensittwo Coldwater Soecies Present Unaloelted Asemont e (ag/Ilter NH3) 6.50 0.0007 0.0009 0.0013 0.0019 0.0019 0.0019 0.0019 6.75 0.0012 0.0017 0.0023 0.0033 0.0033 0.0033 0.0033 7.00 0.0021 0.0029 0.0042 0.0059 0.0059 0.0059 0.0059 2 7.25 0.0037 0.0052 0.0074 0.0105 0.0105 0.0105 0.0105 7.50 0.0066 0.0093 0.0132 0.0!86 0.0186 0.0186 0.0186 7.75 0.0109 0.0153 0.022 0.031 0.031 0.031 0.03t 8.00 0.0126 0.0177 0.025 0.035 0.035 0.035 0.035 8.25 0.0125 0.0177 0.025 0.035 0.035 0.035 8.50 0.0826 0.035 , 0.0177 0.025 0.035 0.035 0.035 0.035 8.75 0.0126 0.0177 0.025 0.035 0.015 0.035 0.035 5 9.00 0.0126 0.0177 0.025 0.035 0.035 0.035 0.035 j Total Ammodle (ag/litec NH3 ) 6.50 2.5 2.4 2.2 2.2 1.49 1.04 6.75 2.5 0.73 2.4 2.2 2.2 1.49 1.04 0.73 7.00 2.5 2.4 2.2 2.2 1.49 7.25 2.5 1.04 0.74 2.4 2.2 2.2 1.50 I.04 0.74 7.50 2.5 2.4 2.2 2.2 1.50 7.75 1.05 0.74 2.3 2.2 2.1 2.0 1.40 0.99 8.00 1.53 1.44 0.75 1.37 1.33 0.93 0.64 0.47 8.25 0.81 0.82 0.78 0.76 8.50 0.54 0.39 0.28 0.49 0.47 0.45 0.44 0.32 0.23 i 8.75 0.2S 0.27 0.17 - 0.26 0.27 0.19 0.15 0.11 9.00 0.16 0.16 0.16 0.16 0'13

                                                                               .         0.10        0.08 i
8. Seleonids ans Other Sensitt wo Cold. ster Species Absenti Un-lonized Aamente (ag/Ilter NH3 )

6.50 ' 0.0007 0.0009 0.0013 0.0019 0.0026 6.75 0.0012 - 0.0026 0.0026 0.0017 0.0023 0.0033 0.0047 0.0047 7.00 0.0021 0.0029 0.0042 0.0047 5 7.25 0.0059 0.0083 0.0083 0.0083 0.0037 0.0052 0.0074 0.0105 0.0148 7.50 0.0066 0.0093 0.0148 0.0144

'                                                  0.0132      0.0186       0.026       0.026        0.026 7.75             0.0109      0.0153          0.022 8.00                                                    0.031        0.04 3      0.043        0.043 0.0126      0.0177        0.025       0.035        0.050 8.25             0.0126      0.0177                                             0.050       0.050 0.025      0.035        0.050       0.050 8.50             0.0126      0.0177        0.025                                            0.050 s.75                                                    0.035        0.050       0.050       0.050 0.0126      0.0177        0.025       0.035        0.050 i

9.00 0.0126 0.0177 0.050 0.0 50

                                                 . 0.025       0.035        0.050       0.050 0.050 Total Ammonte (ag/Ilter NH3 )

6.50 2.5 2.4 2.2 6.75- 2.2 2.1 1 1.03 2.5 2.4 2.2 2.2 7.00 2.5 2.1 f-2.4 2.2 2.2 2.1 47 i.- 7.23 2.5 2.4 2.2 1.04 7.50 2.2 2 1/ 1.48 1.05 2.5 2.4 2.2 2.2 7.75 2.3 21 1.49 1.06 2.2 2.1 2.0 1 8 8.00 1.53 1.44 1.39 f .37 1.33 1.31 0.93 8.25 0.87 0.82 0.78 0.67 8.50 0.76 0.74 0.40 0.49, 0.47 0.45 0.44 0.45 8.75 0.23 0.27 0.31 0.25 0.26 0.27 0.27 0.21 9.00 0.16 0.16 0.16 0.16 0.16 0.17 0.14 0.II i

  • To convert enese values to eg/Ilter N, sulflply try 0.822.

t $lte-se.elfle criterle deveicoment le strongly suggested et te.,.retures emme 20 c because et of the limited date evelletite to generste tho' criterle recommendation, and. , thetumgeratures criterle may beloe have 20 C because of the limi ted date and twecause small changes in signllleent tapact o* the level of treetwf requires. In meeting tne reemaded celterte. OT'd PL6SS433 01 WOBH 10:ST E661-82-33G

                   ,,                              ,                      ,           -                      .,-,.,,,n..m          , - - . ,

i I( a,en ,,ow, .r.9. .entr.,io..,or i..- pH OC 3C IO C IS C 20 C 2S C 30 C A. Salmonids or Omoc Seasittwo Coldwefoe Species Present t un.1ontrod Asenoala (mg/ I toe NH 3 4 3 4 6.50 0.0098 0.0129 0.0182 0.026 l 6.75 0.036 0.036 0.036 0.0149 0.028- 0.030 0.042 0.059 j 7.00 0.023 0.033 0.059 0.039 0.046 0.066 0.093 0.093 t 7JS 0.034 0.044 0.064 0.095 0.095 i 7.50 0.135 0.135 0.135 0.045 0.064 0.09: 0.128 0.181 4 2775 0.036 0.000 0.141 0.181 1

  • 0.183 0.459 0.22 0.22 8.00 0.065 0.092 0.130 0.1M 0.22 l 8.25 0.26 0 .26 0.26 0.065 0.092 0.130 0.184 0.26 i 4.50 0.065 0.092 0.26 0.26 i 0.130 0.144 0.26 0.26 4.75 0.065 0.092 0.130 0.184 0.26 9.00 0.065 0.26 0.26 0.26 0.092 0.130 0.184 0.26 0.26 0.26 i

i Total Ansnonia tag / liter NH ) 3 b 6.50 35 1 33 31 30 29 6.75 32 30 20 14.3 28 77 27 7.00 28 26 18.6 J3.2 23 24 23 7.25 23 22 20 16.4 11.6 7.50 19 .7 19.2 13.4

17.4 16J IS.S 14.9 9.3 7.75 12.2 11.4 14.6 10.2 7.3 10.9 10.5 10.3 7.2 1 8.00 8 .0 7.5 7.1 S.2 5

8.25 4.3 6.9 6.8 4.4 3.5 4.2 4.1 4.0 3.9 4.30 2.6 2.4 2.4 2.1 8.75 2J 2.3 2.3 1.71 1.47 1.40 1.37 1.28 9.00 1.34 1.42 1.07 0.86 0.83 0'.83 0.86 0.83 0.91 0.72 0.38 l} s 6. Salsentes end Otmer Sensitive Coldwater Soeeles 46sent Utv-lontzod Assnonia (mg/IIter NH ) 3 ! 6.50 0.0091 0.0129 0.0182 0.026 0.036 4 6.75 0.0149 0.021 0.051 0.051 7.00 0.030 0.042 0.059 0.084 0.021 0.033 0.044 0.066 0.084 7.25 0.03 4 0.044 0.093 0.131 0.131 l, 7.50 0.064 0.095 0.135 0.045 0.0M O.091 0.190 0.190 7.75 0.056 0.124 0.181 0.26 0.26 j 0.080 0.113 0.139 0.22 8.00 0.065 0.092 0.32 0.32 8.23 0..t30 0.144 0.26 0.065 0.092 0.130 0.37 0.37 i 8.50 0.06S 0.184 0.26 0.37 i 0.092 0.130 0.184 0.37 8.75 0.06 5 0.092 0.26 0.37 0.37 9.00 0.130 0.184 0.26 ] 0.065 0 .0 92 0.130 0.184 0.37 0.37

0.26 0.37 0.37 4,

Total Ammonta (mg/Iltee NH ) 3 6.50 35 33 31 6.75 30 29 29 32 30 28 20 7.00 27 27 26 28 26 23 14.6 1 7.25 23 24 23 23 1 22 20 19.7 16.4 7.50 17.4 16.3 19.2 19.0 13.5 7.75 15.5 14.9 14.6 12.2 11.4 10.9 14.5 10.3 8.00 8 .0 10 .3 10.3 10.2 7.5 7.1 6.9 7.3 i 8.25 4.5 4.2 6.8 6.4 4.9 8.30 4.1 4.0 3.9 2.6 2.4 2.3 2.3 4.0 2.9 8.75 1.47 1.40 2.3 2.4 1.81 9.00 1.37 1.36 1.42 3 0.86 0.83 0.83 0.86 1.52 1.18 0.91 t.01 0.82

  • To convert mese values to ag/li ter M, mul tioly try 0.822.

1 1 II'd PL6SSL83 01 O

                               . _ .       ..                   . _ -    - -_              _     . _ = - _ . _ . _ _ _ . _ _ _ _ _ _ . . . _ . _ . _ __

i l B The Agency acknowledges that the criterion continuous ( Concentration stream flow averaging period used for steady-state ( I ! wasteload allocation modelin,g may be as long as 30 days in situations involving POTWs designed to remove ammonia.Where limited variability of ef fluent pollutant concentration and resultant concentrations in receiving waters can. be demonstrated. In cases where low variability can be demonstrated, longer averaging periods for the ammonia criterion c.ontinuous Concentration (e.g., 30-day averaging periods) wo.uld be l acceptable because the magnitude and duration of exceedences above the criterion continuous concentrat' ion would be sufficiently limited. These matters are discussed in more detail in the Technical Support Document for Water Quality-Based Toxics .

Control (U.S. EPA, 19 85 a) .

7 l [ (50 F.R. 30784, July 29, 1985) SEE APPENDIX A FOR METHODOLOGY s l l 2I*d PL6SSL33 01 l WO&fd 20:ST E66I-32-33G

CATAWBA NUCLEAR STATION STEAM GENERATOR CLEANING  ! SUMMER 1994 CLEANING: MAY 1994 40,000 GAL. ESTIMATED 3% EDA l 3% (NH 4)2CO 3 y ' STEAM l GENERATOR l CLEANING

 -                                               HAZARDOUS WASTE DETERMINATION Y

WASTEWATER ' " ^"' TESTING AND DISPOSAL BY

                                                                ^"'

TREATMENT >  !$'iEES slRNEi^'S"' 400 PPM COPPER 3% EDA pH = 10 ON SITE LANDFILL SO PPM IRON 3%(NH4),CO3 ) CAL CONTAMINATION LI y QUID WASTE OUTFALL 004 RADWASTE LIMITS 1.0 PPM COPPER 1.0 PPM IRON l V OUTFALL 001 pH 6.0 to 8.0 EDA < l.0 PPM , Total Ammonia < l.0 PPM I Y LAKE WYLIE

l 1 l l l I I 1 TIIIS PAGE LEFT BLANK INTENTIONALLY . USED TO SEPARATE ITEMS i 1 1 l l l l l i 1 1 i

February 17,1994 J.T. Harris-CN01EM A.P. Jackson-CNO3CH G.W. Sain EC07D J.W. Bramblett-EC07D C.L. Peed-CN01EM W.J. Davis-CN01CH J.S. Velte D.L. Vaught M.E. Hollis Subjec.. Catawba Nuclear Station -NPDES Permit No. SC0004278 Steam Generator Chemical Metal Cleaning File: CN-208.20 Attached please find an approval letter from the South Carolina Department of Health ad Environmental Control to use the treatment chemicals for the steam generator chemical metal cleaning to occur later this year. No additional monitoring has been imposed above those ,  ; required in our NPDES permit. 1 The next step will to submit a package to the State for a construction permit (or letter of l approval) to treat the wastewater generated from the cleaning. If you have any questions or l need additional information please give me a call at 875-5965. Sincerely, t~~ A John Estridge, Engineer l Environmental Division, Water Protection jte/296 NRC Document Distribution cc: M.A. Lascara

4 tills PAGE LEFT BLANK INTENTIONALLY . j USED TO SEPARATE ITEMS l l l 1

1 South Carolina _ . Dougts E.ery:nt e _ D H E C. Department of Heastn and Environmental Contro' Soard: Richard E. Jabbour. DOS, Chairman Robert J. Stnphng. Jr, %ce Chairman Wdham E. Applegate.111 John H. Burnas J n eM 2600 Bull Street. Colutnbia, SC 29201 Promotrng Health. Protecting the Envrronment i February 16, 1994 Mr. John Carter, Technical System Manager Environmental Division, Water Protection Duke Power Company 13339 Hagers Ferry Road Huntersville, N.C. 28078-7929 Re: Chemical Metal Cleaning Duke Power Co./ Catawba Nuclear Station York County

Dear Mr. Carter:

Our Office has received your December 28, 1993 letter concerning the Chemical Metal Cleaning of the four (4) steam generators at Unit 2 at the Catawba . Nuclear Station in York County. Based on a review of the proposal, we agree with your request. We understand the treatment chemicals selected to remove the copper and iron build up within the steam generator are ethylenediamine (EDA) and ammonium carbonate (NH4 ) C0 . Approximately 40,000 gallons of wastewater will be generated from the metal ' cleaning which will be treated and discharged through the NPDES permit outfall 004. We look forward to receiving the submittal for the wastewater treatment system associated with the chemical metal cleaning project in the near future. If you should have any questions, please call me at (803)734-5247. Sincerely, I e -- el Timothy H. Eleazer

h. [bf j Environmental Engineer Associate j Industrial and Agricultural i TME/ebs Wastewater Division 1

cc: Al Williams, Catawba EQC  : l i i I l 1 O reevcorocace-J

if I Duke Ibuer Company Generafton Serrsces Department I:f:tHliners fim RocJ lictentalle SC MG l*929 DUKEPOWER April 20,1994 Mr. Timothy M. Eleazer Industrial and Agricultural Wastewater Division South Carolina Department of Health and Environmental Control 2600 Bull Street Columbia, SC 29201

Subject:

Catawba Nuclear Station -NPDES Permit No. SC0004278 Sodium Bromide Usage in RC Cooling Towers File: CN-702.13

Dear Mr. Eleazer:

This letter is to request permission to use sodium bromide in the condenser circulating water system (RC) cooling towers at Catawba Nuclear Station on a permanent basis. To support this request please find as Attachment #1 a report titled Toxicity ofCooling Tower Water Following 2:1 (Chlorine to Bromine) Treatment which indicates the solution to be non-toxic. Duke Power also requests that references made to Free Available Chlorine (FAC) be changed to Free Available Oxidant (FAO) for the RC cooling towers. The existing testing requirement for the RC cooling tower blowdown line (Outfall 005) is for FAC. (See Part III Item #16 and P.13 or 31) To allow for the usage of sodium bromide, it is requested that references to FAC be changed to FAO within the permit. When chlorine is the only oxidant utilized, then the FAC is the same as the FAO. However, now that an additional oxidant is to be used, FAO is the more appropriate parameter to reference in the permit. Catawba is presently using the DPD Colormetric Method for determination of Free Available Chlorine. Per Standard Methods, (4500-Cl), this analytical method will detect both free chlorine and free bromine. Background Information Duke Power Company requested permission to begin using sodium bromide on a trial basis in one of the two RC cooling towers systems at Catawba Nuclear Station in a letter dated May 27,1993. The State responded to this letter and requested toxicity

testing data be provided on the sodium bromide and sodium hypochlorite solutions in a letter to Duke Power dated September 16,1993. Duke Power then proposed to State by fax (See Attachment #2) a request to perform toxicity testing on the sodium bromide and sodium hypochlorite solution as it would be discharged to Lake Wylie. The test was then conducted and the results are provided in Attachment #1. Please note that Attachment #1 references Calgon H-940 which is a Calgon Corporation product. This is only a typical product name and other suppliers of sodium bromide will/may be selected in the future. For you convenience, please find as Attachment #3 the original description of sodium bromide usage. This is the information which is required in Part III Item 9 of the NPDES permit. Summary To summarize, Duke Power is requesting approval to use sodium bromide as a . maintenance chemical in the RC cooling towers. The original request was for a trial usage. However, if this initial trial is considered successful, Catawba would like to immediately begin using the sodium bromide without seeking further approvals. It is requested that references within the permit for Free Available Chlorine (FAC) be changed to Free Available Oxidant (FAO) as described above. The existing permitted limits for FAC should be applied for FAO. The solution of sodium bromide and sodium hypochlorite will not be discharged directly to Lake Wylie. The compounds will be allowed to decay until the concentration of FAO (as measured with presently certified DPD Colormetric Method for determination of FAC) in the RC cooling tower being treated drops to less than current permit limits. Once a less-than-detectable FAO is reached in the RC cooling tower being treated, residual byproducts will be discharged to Lake Wylie via Outfall 001 by means of the cooling tower blowdown line (Outfall 005). Therefore, only the by-products of these compounds will be seen in the final discharge. The toxicity testing provided shows these by-products to be non-toxic. The toxicity testing was performed under worst case scenarios. Typical field conditions are eight parts of once through RC cooling water to one part of RC cooling tower blowdown water (1:8). The toxicity tests performed at various ratios as low as 1:2 were not toxic. Your approval is requested as soon as possible in order to begin using the sodium bromide within the RC cooling towers. The use of sodium bromide, if successful, will substantially reduce the volume and concentrations of maintenance chemicals used in the RC cooling towers.

i Should you need additional information to support this request please feel free to call John Estridge at (704) 875-5965 or Christine Odom at (704)S754201.

! Sincerely,

                 /
  ,on                 chnical System Manager Environmental Division, Water Protection 1

5 jte/311 Attachments i l l l 1 l l 1 l l

be: J.T. Harris M.A. Lascara C.T. Peed A.P. Jackson G.W. Sain W.J. Davis J.S. Velte I l

ATTACHMENT #1 a h Toxicity of Cooling Tower Water Following 2:1 (Chlorine to Bromine) Treatment John S. Velte Duke Power Cornpany, Dmronmental Division,13339 Hagen Ferry Rd, Huntenville, NC 28078 EXECUTIVE

SUMMARY

A sample of cycled up (Le., concentrated via recirculation and evaporation) cooling . water from a Catawba Nuclear Station (CNS) cooling tower was treated with chlorine to a free residual of 3 ppm. Half as much Bismine was then added to the sample (i.e., a ratio of 2:1). The sample was stirred at 40.6-433'C (105110*F) to simulate the physicochemical conditions typical in a cooling tower, until the l concentration of free available oxidant declined to less than background. The l

sample was then diluted with various volumes of Intake (raw) water from the CNS

, intake (Le., Lake Wylle) and tested for toxicity. CNS personnel have estimated that  ; cooling tower " blowdown" waste is typically diluted with raw water to 11.2% waste j (a ratio of 1:8) during discharge. This test of simulated waste demonstrated that no I toxicity occuritd among Ceriodaphnia, even when exposed to 33.4% waste (a 1:2

dilution). These test results support the proposed maintenance chemical trial of j sodium bromkle (Calgon H 940) in condunction with sodium hypochlorite to contavl j biofouling. -

4 INTRODUCTION 1 l ] A bench test designed to simulate the behavior of sodium bromide under cooling tower conditions was developed by Duke Power Company. The bench test was used to

                                                                                                                                                                                )
produce a simulated waste that would allow the evaluation of toxicity from sodium 4 bromide, bromine residuals, and other waste components in the projected " worst-case" ratio of chlorine (Cl) to bromine (Br). South Carolina Department of Health and Environmental Control (SCDHEC) officials identified the need for this information (to ensure that the receiving water body would not be harmed) as a condition for approval to conduct a maintenance chemical trial with sodium bromide.

1 ' MATERIAIS AND METHODS Sample Prenaration i

A 4-L sample of CNS cooling tower water was collect as it spilled to ground level in a Unit-2 cooling tower. The sample had been cycled up to normal blowdown i

concentration but no maintenance chemicals had been added. Immediately following the collection of this sample,10 L of subsurface CNS intake water were collected for use as control and dilution water during the planned test. Both samples were placed

immediately on ice for transport, logged into the Biomonitoring Lab at < 4*C, and held in a refrigerator at 0 to 4*C thereafter.

Duke Power Company's proposal is that Br in the form of sodium bromide be added to the C1 (presently added as sodium hypochlorite) to improve biofouling control while potentially reducing the amount of Cl presently used. Bromine for this test came from a i product called Calgon H 940@ (Calgon Corporation) which is 40% sodium bromide. Page 1 of 5 4

                                                                                  ,,_y_      . , _.   ,     , .. . _ , ,.,_,  ,,,_...,y,y_. p _ _ _, . . , ... , , , , ,, , .

For convenience, the Ci source was Chlorox@ Bleach (Chlorox Company) which contains 5.25% sodium hypochlorite. CNS uses an industrial source of sodium l hypochlorite that differs only in the percentage of active ingredient, so with appropriate dilution, no meaningful chemical difference in the lab and field situation existed. The procedure for sample manipulation was prescribed by Duke Power Nuclear Chemistry personnel to produce a bench-scale sample of effluent that would simulate l waste from the cooling towers if treated with the proposed biofouling agents. That l procedure is summarized here:

1. Approximately 2.5 L of cooling tower water was warmed quickly to 43.3*C in a

) water bath. Exactly 2000 mL were measured from the warmed sample, and poured into a 2000 mL glass beaker.

2. The beaker was set on a magnetic stirrer and a large Teflon-coated stir bar was placed in the sample. These components were set up inside a drying oven which i

had previously been calibrated to operate at 43.3*C. The oven provided an air- i tight, dark, and thermally stable environment.

3. A digital thermometer with remote temperature probes was installed with one probe in the sample being stirred and one measuring the air temperature within the oven.
4. The sample was dosed with 6 mL of a 1000-ppm Ci stock solution; sample temperature at this point was 40.3*C. The oven was sealed followi'ng this addition and continuously thereafter except when sample measures or manipulations were underway.
5. After 15 minutes, the free available oxidant (FAO) of the sampic (i.e., chlorine) was measured with a colorimetric procedure (Hach Company). This required the removal of 25 mL of sample via pipette. The measured FAO was 3.0 ppm.
6. Three mL of a 1000-ppm Br stock solution was added. The sample was then allowed to react in the apparatus for 2 hours and 45 minutes. Another 25 mL subsample was withdrawn and FAO in that sample (i.e., chlorine and bromine) was i measured at 0.2 ppm. The temperature had increased to 42.5'C.
7. Five hours and 15 minutes after Br addition, a third withdrawal of 25 mL showed that FAO had declined to 0.11 ppm; temperature was 43.1 C.

l l

8. The sample treatment was stopped after 7 hours and 5 minutes (post Br addition) when the fourth and final 25-mLaliquot revealed that FAO was < 0.1 ppm. A sirnultaneous test of untreated cooling tower water gave an FAO of 0.12 ppm, so it I was assumed that dissipation of Cl in the manipulated sample was complete.

Achievement of this endpoint, as determined by CNS Chemistry personnel, is necessary before discharge from the cochag towers is begun. The final temperature l reading was 43.3*F. '

9. The manipulated sample was refrigerated (0 to 4 C) in a scaled polyethylene container, with no head space, for toxicity testing.  !

Page 2 of 5

l 1 1 Toxicity Evaluation Toxicity testing was begun the following day (i.e., the cooling tower sample was 50 hours post collection and approximately 17 hours post manipulation; the CNS intake dilution water sample was approximately 49.5 hours post collection). Toxicity test methods were those prescribed by the U.S. Environmental Protection Agency (1989) and SCDHEC (1989). The procedure was a definitive Ceriodaphnia Three-Brood Survival and Reproduction Toxicity Test with a control and series of four treatments. Dilutions of the simulated cooling tower waste were prepared on test days 0,2, and 4; and solutions in test cups were renewed daily. Cooling tower water that is discharged during

       " blowdown" of the towers is typically diluted at a ratio of 1:8 with raw water that is        ,

pumped through the station. That ratio was used as the basis of the treatment series in an attempt to establish a " dose-response" relationship between the waste, and the test organism (Ceriodaphnia dubia). RESULTS The measured sample volume after manipulation was 1827 mL Considering the starting volume of sample, Cl and Br stock solution additions, and FAO sample withdrawals,82 mL were missing due to evaporation. The timing of additions and withdrawals complicates the interpretation of evaporative effects on the sample. Evaporation had the effect of concentrating the test sample by less than 5% under these test conditions. That - effect is considered negligible for this study because ongoing evaporation is a function of full-scale cooling tower operation too. The comparability, however, of evaporation modeled in this study with that which actually occurs in the cooling towers was not determined. The following table summarizes the survival and reproduction that occurred during the toxicity test in the control and treatments. The tested ratios of cooling tower waste to raw intake water (i.e., 1:16.1:8,1:4, and 1:2) are presented as waste percentages to simplify interpretation. l i Percent of Cooling # C. dubia I Tower Waste in Females Percent Total Young Mean Young intake Water Exposed Survival Produced Per Female 0 (Control) 10 100 302 30.2 l 5.8 10 100 283 28.3 l

11.2 10 100 295 29.5 20.0 10 100 293 29.3 33.4 10 100 297 29.7 l i l

Page 3 of 5 i

These data were evaluated as specified by USEPA for significant (alpha = 0.05) survival and reproduction effects. The lack of any mortality during the test negated the need to look for survival effects. The untransformed data were found to be normally distributed according to a Shapiro-Wilks Test. Banlett's Test further confirmed that the data are homogeneous. Consequently, Dunnett's T-Test for determining significant differences between the reproductive mean of the control and all treatments was applied. No significant differences between the control and any treatruent were found. Copies of the raw test data sheets and a printout of the statistical evaluation are attached as Appendix A. DISCUSSION The lack of a " dose-response" curve from this data preclude the determination of the 7-day EC20 value (as specifically requested by SCDHEC) or any other chronic endpoint. The data do, however, demonstrate that the simulated cooling tower waste was safe for C. dubia even at a concentration that was 3 times greater than is expected under actual station discharge conditions. There was no significant difference observed in C. dubia survival or reproduction between the control, which consisted of 100% intake water, and any treatment (the highest of which was 33.4% cooling tower waste). A full-scale trial of sodium bromide (used in a manner consistent with the protocol described in this l report) would be environmentally compatible based on this test outcome. REFERENCES CITED - South Carolina Department of Health and Environmental Control.1989. South Carolina Environmental I.aboratory Certification Criteria: Biological Parameters. Columbia, SC i U.S. Environmental Protection Agency.1989. Short-terrn methods for estimating the j chronic toxicity of effluents and receiving waters to freshwater organisms. 2nd l ed. EPA /600/4-89/001. Cincinnati, OH l 1 I 1 1 I 1 j Page 4 of 5 l { l l

Appendix A l Page 5 of 5 1

              . ~ . , , _ _   '""w+a.m. _ ,

SP0394J2 Carlodaphnic cubia Data Shest for 2:1 Cl to Bt Cooling Tower Waste Chronic Toxicity Tast i Procedura Number B10-260.0 March 1994 i CONTROL (100% Row Water) neolicate

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;                                        numoeh                        Test Terminatbn: Date      / /         Time f est locotton: Duke Power Company Blomonnoring toborofory.13339 Hogers Ferry Rd.. HuntersvE!e, NC 2007S Age of test initiotion           < 30 h                  incubator 10 / shell     /4 /g                    Renewalfrequency = Dolfy Test vessel: Composulon = Polystyrene. Anchor Hocking PI-l                    Capacity = 30 mL             Solutbn volume = 15 mL Day         DHuent          Treatment      Treatment                feeding                   Temperature            innlotiorL     Ironsfers       Counts    Survivoi &

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      *Neonotes checked I h atter initiation for rondom mortollfles @              . replace rondom mortollfles and docaznent in the comments section as opproprion Diluent Cycled-4Jo Cooling Tower Wo'er (recieved 03-23-94)

Toxicants Br (os 40% NoBr: Colgon H-940) and CI(os 5.25% NoOCt Chlorox) Source = Nuclear Chemistry (Steve Davenport) ClStock Sotution Preporation: 4.0 mL product diluted to 100mL wnh diluent = ICKX) ppm Cistock soution Br Stock Solution Preparation: 0.322 mL product diluted to 100mL wnh diluent = 1000 pp}m stock soution Dllution Scheme Recorded by .h 1.\[t1f A. M -$/ Checked by Afd O. il/m 3bf/9t/ D Me DLte '67 mL of treated cool ower water 1o 500 mL wth dauent for a final concenfrotion of 12 Dilute 100 mL of fieoted cooing tower water to 500 mL wth diluent for o finol concentration of 1:4 [ ' ' s M: L'3(; D^ L fW M-t ao 7 Dilute 56 mL of trected cooRng tower water 1o 500 mL with dauent for o finot concentration of 12 :Sqq - l 8. L'7 Ofiute 29 mL of treated cooling tower water to S00 mL with dauent for a fina' :oncentroflon of 1:16  : H 11 - 5. % 7. Dilute O mL of treated coollrig tower water to 500 mL wfth diluent for o final concentration of 100% tow water Control  :: g.X) ~ O ?. Food YIC odjusted to 1800 mg/L total sonds. Procedure Number flO48 0. Daphnid YTC Food Pseparation Seenostrum copricornutum ceR denslty = 3 42 x 10E7 Procedure Nurnbar B104.4.1, Moss AlgolCunure for Daphnid Feeding Ternperoture fest temperatures measured by device: ELENV- 3 tlM , Procedure Number 810-200.0. Tempesoture Determination DO Noi DISPOSE OF SOLUTIONS Of DILUENT UNilL REPORT FORMS HAVE BEEN APPROVID Fino! Dato 3heet Check by /V g- Of k Date '/kW ' nemed 3/29/94 sS w

i 3 SP0394J2 i I i 2:1 Ci to Br Cooling Tower Weste Toxicity Test  ! 70ay Carlodaphnia Survival and Reproduction Test i Water Chemistry Data control ,- l Parameter Day 0 Initiale Day 1 l Initiale l Day 2 l Initials Day 3 l Initlets } Day 4 l initiale l Day So int . dale Day 6 inillais Day 7 Initials i D O (mgt) Onma0 36 YA 8.3 lPW l 9.~7 l l/4 9 .7 I WAG l 97 l A K I 8 36" M [ (Fina0 3t [9/ 8.3 l {<,a) l 9.3 lVKAF E4 lox l 9.5 1 84 irs Utrn I pH (Un ts) Onitia0 7T W 7L l {ed lTs l MW 7,y j MAF l 75 l

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2:1 Cl TO Br COOLING TOWER WASTE CHRONIC TEST. 10:07 Thursday, April 7, 1994 CNS RAW (INTAKE) WATER DILUENT PBYr:*C S. VELTE TILE NO. SP0394J2 NO MORTALITY OCCURRED, THUS FISHER'S EXACT TEST FOR SIGNIFICANT MORTALITY'

   'DOES NOT APPLY.

SHAPIRO-WILKS TEST FOR NORMALITY OF UNTRANSFORMED REPRODUCTION DATA

  • 1 Analysis Variable : YOUNG
    ----------_-___-------_-------- TREAT = control ------------_----------------

Minimum Maximum Sum Mean Std Dev 27.0000000 33.0000000 302.0000000 30.2000000 2.2509257

   --------------------------_---- TREAT =treatl ------------------------------

Minimum Maximum Sum Mean Std Dev 16.0000000 34.0000000 283.0000000 28.3000000 5.5986109 1 i 1

   ------------------------------- TREAT = treat 2 ----__-----___---__-______-_.-                                                            l Minimum                   Maximum                      Sum                   Mean                  Std Dev 25.0000000                37.0000000              295.0000000          29.5000000                    4.1699987 1
   ------------------------------- TREAT = treat 3 ------------------------------                                                            ,

Minimum Maximum Sum Mean Std Dev - i 25.0000000 34.0000000 293.0000000 29.3000000 2.4066644 l

   - - - - - -- -- - -- - - - - - - - - - - - - - - - - - - - T RE AT = t r e a t 4 -- -- --- - - - - -- - --- -- - - - -- -- - -- -

Minimum Maximum Sum Mean Std Dev 25.0000000 53.0000000 297.0000000 29.7000000 2.2135944 Univariate Procedure Variable =DIFF Homents N 50 Sum Wgts 50 Hean 0 Sum 0 Std Dev 3.453481 Variance 11.92653 Skewness _0.55866 Kurtosis 2.23593 USS 584.4 CSS 584.4 CV . Std Mean 0.488396 T:Mean=0 0 Pr>lTj 1.0000 Num ^= 0 50 Nitm > 0 26 M(Sign) 1 Pr>= M 0.8877 Sgn Rank 17.5 Pr>= S 0.8678 W: Normal 0.965742 Pr<W 0.2641 PROBABILITY < W (0.2641) IS GREATER THAN 0.01, SO CONCLUDE THAT UNTRANSFORMED' REPROCUCTION DATA ARE NORMALLY DISTRIBUTED. Page 1 l l [ t I

 .-        -..x                 -            .                      .             _ . .         -     ..- .            . . . . . . . . - . - - .                  - . -               ---   - - - -

BARTLETT'STESTFORHOMOGENEITYOFREPRODUCTIONDATAVARIANCEAMONGTREATHENTSN BARTLETT'S TEST: CHI. SQUARE =12.726632948 ALPHA =0.0126917128 . Compare to critical B as approximated from the Chi-square distribution at (p-1) degrees of freedom at a 0.01 level of significance. If the computed B is less than the critical

                                  -(Chi-square) value, the variances are equal.                                                                                                                     i ALPHA-(0.01269) IS GREATER TRAN 0.01, SO CONCLUDE THAT DATA ARE HOMOGENEOUS-                                                                                               l Listing of Input Data Data Checked                       Total Live Young Per Replicate By:                       -------= - -----------------==- =-- --

Dater y.Sgy 1 l2 l3 l4 l5l6 l7 l8 l9 l10 ___+.__+___+___+___+___+___+__.+___+__. U .44~g _.__________+___+__. N lN lN lN lN lN lN lNlN lN

                                                                                             ,___+___+_..+_..+__.+___+_..+---

Treatment control 32l29 33 28 33 31 32 27 29 28 treati P/ 31 34 24 34 26 32 25 30 31 treat 2. 28 29 30 27 37 25 25 31 27 36 treat 3 1 28 30 31 25 30 27 28 29 31 34 treat 4 l 28 30 29 31 32 30 30 25 29 33 3

                      .-DUNNETT'S T-TEST FOR DETERMINING SIGNIFICANT DIFFERFNCES IN REPRODUCTIONe BETWEEN CONTROL AND TREATMENTS Dunnett's Test at an alpha = 0.05 level of significance General Linear Models Procedure Dunnett's One-tailed T tests for variable: YOUNG-NOTE: This tests controls the type I experimentwise error for comparisons of all treatments against a control.

Alpha = 0.05 Confidence = 0.95 df= 45 MSE= 12.98667 Critical Value of Dunnett's T= 2.222 Minimum Significant Difference = 3.5817 Comparisons significant at the 0.05 level are indic.- by '****. ' General Linear Models Procedure Simultaneous Simultaneous i Lower Difference Upper TREAT Confidence Between Confidence Comparison Limit Means Limit j treat 4 - control _4.082 -0.500 3.082 i treat 2 - control -4.282 -0.700 2.882 ' treat 3 - control -4.482 -0.900 2.682 treatl - control 5.482 -1.900 1.682 SIGNIFICANT DIFFERENCES AT ALPHA = 0.05 VERE NOT OBSERVED BETWEEN THE CONTROLe 1 AND ANY OF THE FOUR TREATMENTS. THIS TEST DISPLAYED TEITHER ACUTE 10R i PCHRONIC TOXICITY OF THE SIMULATED COOLING TOWER WASTE TO .THE TESTJPEC3ES, CERIODAPHNIA DUBIA, AT ANY TESTED DILUTION . CHECKED BY:v Afdua/In DATE: Y/p/fy / Page 2 - . - . . . _ . . . . . . , _ _ , . _ . . . _ , _ _ . _ . . ~ _ . _ - . . _ - . . _ _ . ~ _ . _ _ . . _ . - _ . . _ _ _ _ . . .

ATTACHMENT #2 CATAWBA NUCLEAR STATION ' COOLING TOWER TOXICITY TEST SODIUM BROMIDE MIXED WITH SODIUM HYPOCHLORITE In order to simulate the field conditions after mixing the sodium hypochlorite and sodium bromide to determine the toxicity, the folloveing steps will be performed.

1. The cooling towers at Catawba will be cycled up to normal blow down concentrations without the use of any maintenance chemicals. A sample of this cooling water would be pulled and deliverd to out toxicity laboratory at Duke Power's Environmental Center.
2. A sample of raw lake water from Lake Wylie will also be delivered to the Environmental Center at the same time.
3. The cooling water sample will be placed into a heated stirrer to approximatly 110 F to simulate the temperature of the actual cooling towers.
4. A worst case scenario of sodium hypochlorite and sodium bromide will be added to the cooling water sample. Sodium hypochlorite will be added until a free chirorine ~

residual of 3.5 ppm is obtained. Approximately 1 ppm of sodium bromide will then be added to the mixture.

5. The sample will be mixed until no free oxidant is measured.
6. At the point in which no free oxidant is measured, the sample will be mixed with the raw lake water sample in the following quantities: 8 parts raw lake water to 1 part cooling water.

This 8 to i ratio will simulate the actual conditions prior to the discharge monitoring point. The cooling tower blowdown rate is approximatly 5000 gpm. This is mixed with once through cooling water of approximatly 45,000 to 50,000 gpm prior to being discharged to Lake Wylie.

7. A sample will then be pulled for toxicity testing purposes.

l l

ATTACHMENT #3 CATAWBA NUCLEAR STATION PROPOSED SODIUM BROMIDE USAGE MAY 27, 1993 NPDES PERMIT SC0004278 , PART III ITEM 9 REQUIREMENTS

1) NAME AND GENERAL COMPOSITION OF THE MAINTENANCE CHEMICAL a) Liquid Sodium Bromide (40 to 46% solution)
2) QUANTITIES TO BE USED Approximtely 100 gallons of product. l
2) FREQUENCY OF USE Every two days,  !
4) PROPOSED DI6 CHARGE CONCENTRATION
  • Since chlorine and bromide are both oxidants-it is proposed that '

the current limits on Outfall 005 of 0.2 mg/l monthly average and 0.5 mg/l daily maximum for Free Available. Chlorine be changed to Free Available Oxidant. (Outfall 005 is an '.nternal outfall that > discharges upstream of Outfall 001. Flow through Outfall 001 typically allows for an approximate 9 to 1 dilution ratio.)

5) EPA REGISTRATION NUMBER 1

The EPA Registration Number for one of the sodium bromide products under evaluation is 1706-168. Once the actual manufacturer / supplier is selected an update can be provided if needed.

6) AQUATIC TOXICITY INFORMATION a) SODIUM BROMIDE  :

l 96 hour static acute LC 50 to Fathead Minnow = 16,479 ppm. i 96 hour static acute LC 50 to Poecilia reticulata = 225 ppm. l 48 hour static acute LC 50 to Daphnia'magna = 7,900 ppm. ' b) HYPOBROMOUS ACID (acid generated from Sodium Bromide)- 96 hour static acute LC50 to Bluegill Sunfish = 0.52 ppm-(as Br2) 96 hour NOEC for Bluegill Suntish is 0.30 ppm based on no mortality. ' 48 hour static acute LC50 to Daphnia Magna = 0.71 ppm (as Br2) 48 hour NOEC for Daphnia magna is 0.41 ppm based on no mortality, f

l 1 ATTACilMENT A Aerial Over flight Photography Catawba . Nuclear Station Septeinber 1993 Vegetative Reinote Sensing Flight Lines - 3,4, and 5 Photographs - 3/7-10, 4/6-11, 5/7-11 l

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