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Category:NPDES NONCOMPLIANCE NOTIFICATION
MONTHYEARML20099G3651992-08-11011 August 1992 NPDES Noncompliance Notification:On 920805,fish Discovered in Circulating Water Discharge Area.Caused by Thermal Stresses Re Plant Circulating Water Discharge Temps.Temp Monitoring Will Continue.Table Re Fish Species Encl ML20101T1111992-07-14014 July 1992 NPDES Noncompliance Notification:On 920708,fish Kill Discovered in Plant Circulating Water Discharge.Caused by Thermal Shock from Increasing Circulating Water Discharge Temps.Addl Info Will Be Included in 1992 Fish Kill Summary ML20059G3861990-09-0404 September 1990 NPDES Noncompliance Notification:On 900828,29 & 30,limited Fish Kills Discovered in Circulating Water Discharge Bay. Caused by Thermal Shock from Increasing Discharge Temps Combined W/Fluctuating Water Levels in Reservoir ML20059B5041990-08-20020 August 1990 NPDES Noncompliance Notification:On 900815 & 16,limited Fish Kills Discovered in Plant Circulating Water Discharge Bay. Caused by Thermal Shock from Increasing Discharge Temps Combined W/Fluctuating Water Levels ML20055G3951990-07-16016 July 1990 NPDES Noncompliance Notification:On 900711,limited Fish Kill Discovered in Plant Circulating Water Discharge Bay.Caused by Thermal Shock from Increasing Discharge Temp & Fluctuating Water Levels in Reservoir ML20044B0181990-07-11011 July 1990 NPDES Noncompliance Notification:On 900706,limited Fish Kill Discovered in Plant Circulating Water Discharge Bay.Caused by Thermal Shock from Increasing Discharge Temps Combined W/Fluctuating Water Levels in Facility Reservoir ML20085M5841990-06-14014 June 1990 NPDES Noncompliance Notification:Chronic Problem W/Ph Values Exceeding Limit of 9.0 at Outfalls 005,006A & 006B ML20246K2581989-08-28028 August 1989 NPDES Noncompliance Notification:On 890822,fish Kill Discovered in Circulating Water Discharge Bay.Caused by Temp Fluctuation in Circulating Water Discharge Bay ML20245J4581989-08-0909 August 1989 NPDES Noncompliance Notification:On 890804,89 Dead Fish Discovered in Circulating Water Discharge Bay.Possibly Caused by Temp Fluctuations at Bottom of Discharge Bay on 890803 ML20247E9961989-07-20020 July 1989 NPDES Noncompliance Notification:On 890715,fish Kill Discovered at Plant Circulating Water Discharge Canal.Caused by Thermal Shock ML20247F7111989-07-20020 July 1989 NPDES Noncompliance Notification:On 890626,dead Catfish Discovered in Circulating Water Discharge Bay & Canal at Plant.During 890626-0710,167 Dead Fish Noted in Discharge Area.Fish Kill Suspected to Have Occurred Late on 890624 ML20149J2731988-02-16016 February 1988 NPDES Noncompliance Notification:On 880208,pH at Plant Surge Basin,Outfall 6B Exceeded Permitted Max of 9.0.Probably Caused by Effects of Algae.Util Working W/State of Sc to Gain Approval for Use of Algicides ML20235U9111987-07-17017 July 1987 Notifies of Small Fish Kill in Plant Circulating Water Discharge Canal on 870703.Caused by Apparent Thermal Shock During Period of Rapidly Increasing Circulating Water Discharge Temps ML20212D1081986-08-0606 August 1986 Notifies of Limited Fish Kill in Circulating Water Discharge Canal on 860729.Caused by Either Thermal Shock Due to 860727 Turbine Trip or by Fish Being Trapped in Refuge Area ML20207G0081986-07-17017 July 1986 NPDES Noncompliance Notification:On 860618,instantaneous Max Ph 10.43 Exceeded Ph Upper Limit for Surge Basin Pond Outfall 006B.Caused by Demineralization of Train a Component Cooling Water.Flow Diverted to Chemical Cleaning Pond ML20112A9821985-03-0606 March 1985 NPDES Noncompliance Notification:On 850301,analysis Indicated Iron Out of Spec for Tank Previously Released. Caused by Lab Instructions Not Requiring Completion of Analysis Prior to Approving Release ML20114A2141985-01-17017 January 1985 NPDES Noncompliance Notification:On 850113,unit Exceeded Ph Lower Limit from Steam Generator Blowdown Outfall 004. Lower Limit of 6.0 Exceeded Due to Resin Intrusion Into Condensate Sys.Discharge to Outfall Secured ML20094E5581984-08-0101 August 1984 NPDES Noncompliance Notification:On 840725,total Suspended Solids for Discharge Points 005 & 010 Exceeded 45-mg/P Limit.Caused by Loss of Power to Aerator at Point 005 & Clogged Aerator Diffuser at Point 010.Conditions Corrected ML20093K1361984-07-23023 July 1984 NPDES Noncompliance Notification:On 840718,oil & Grease from Discharge Point 003 (Radwaste) Exceeded 29 mg/1 Limit Per Release.Caused by Excessive Amounts of Soaps or Cleaning Agents ML20084A6021984-04-20020 April 1984 NPDES Noncompliance Notification:On 840201,daily Max Effluent Limitations on Total Suspended Solids for Daniel Const Co Sewage Lagoon 001 & Nuclear Training Ctr Sewage Lagoon 001 Exceeded.Caused by Power Outage on 840131 1992-08-11
[Table view] Category:TEXT-ENVIRONMENTAL REPORTS
MONTHYEARML20217J3431999-10-15015 October 1999 Environ Assessment & Finding of No Significant Impact Re Issuance of Exemption from Certain Provisions of 10CFR50, Section 50.60(a) to Sce&G for Operation of VC Summer Nuclear Station RC-99-0075, 1998 Annual Effluent & Waste Disposal Rept for VC Summer Nuclear Station. with1998-12-31031 December 1998 1998 Annual Effluent & Waste Disposal Rept for VC Summer Nuclear Station. with ML20217F2781998-04-0101 April 1998 Mod to NPDES Permit SC0030856,issued to Sce&G Vsns RC-98-0095, Annual Effluent & Waste Disposal Rept for VC Summer Nuclear Station for Operating Period 970101-12311997-12-31031 December 1997 Annual Effluent & Waste Disposal Rept for VC Summer Nuclear Station for Operating Period 970101-1231 RC-98-0096, Radiological Environmental Monitoring Rept for Period Jan-Dec 19971997-12-31031 December 1997 Radiological Environmental Monitoring Rept for Period Jan-Dec 1997 ML20138H7081996-12-31031 December 1996 Annual Effluent & Waste Disposal Rept for Operating Period Jan-Dec 1996 RC-97-0093, Radiological Environ Monitoring Rept VC Summer Nuclear Station for Operating Period 960101-12311996-12-31031 December 1996 Radiological Environ Monitoring Rept VC Summer Nuclear Station for Operating Period 960101-1231 ML20107L8711995-12-31031 December 1995 Annual Effluent & Waste Disposal Rept for Operating Period Jan-Dec 1995 ML20080H6731995-09-30030 September 1995 Technical Rept 94-3, Seismic Activity Near VC Summer Station for Period Jul-Sept 1994 ML20080P4181994-12-31031 December 1994 Semiannual Effluent & Waste Disposal Rept for Operating Period Jul-Dec 1994 ML20083L6511994-12-31031 December 1994 Seismic Activity Near VC Summer Nuclear Station for Period Oct-Dec 1994 RC-94-0227, Semiannual Effluent & Waste Disposal Rept for Period of Jan-June 19941994-06-30030 June 1994 Semiannual Effluent & Waste Disposal Rept for Period of Jan-June 1994 ML20073A7221994-06-30030 June 1994 Technical Rept 94-2, Seismic Activity Near Vsns for Period Apr-June 1994 RC-94-0052, Semiannual Effluent & Waste Disposal Rept for Operating Period,930701-12311993-12-31031 December 1993 Semiannual Effluent & Waste Disposal Rept for Operating Period,930701-1231 ML20065F3041993-12-31031 December 1993 Technical Rept 93-4, Seismic Activity Near Vsns for Period Oct-Dec 1993 ML20065F2981993-09-30030 September 1993 Technical Rept 93-3, Seismic Activity Near VC Summer Nuclear Station for Period Jul-Sept 1993 ML20056G5471993-06-30030 June 1993 Semiannual Effluent & Waste Disposal Rept for Operating Period Jan-June 1993 ML20046A0581993-03-31031 March 1993 Technical Rept 93-1, Seismic Activity Near VC Summer Nuclear Station for Jan-Mar 1993. RC-93-0116, Radiological Environ Monitoring Rept for VC Summer Nuclear Station for Operating Period 920101-12311992-12-31031 December 1992 Radiological Environ Monitoring Rept for VC Summer Nuclear Station for Operating Period 920101-1231 ML20126G9151992-09-30030 September 1992 Technical Rept 92-3, Seismic Activity Near VC Summer Nuclear Station, for Period Jul-Sept 1992 ML20099G3651992-08-11011 August 1992 NPDES Noncompliance Notification:On 920805,fish Discovered in Circulating Water Discharge Area.Caused by Thermal Stresses Re Plant Circulating Water Discharge Temps.Temp Monitoring Will Continue.Table Re Fish Species Encl ML20101T1111992-07-14014 July 1992 NPDES Noncompliance Notification:On 920708,fish Kill Discovered in Plant Circulating Water Discharge.Caused by Thermal Shock from Increasing Circulating Water Discharge Temps.Addl Info Will Be Included in 1992 Fish Kill Summary ML20104B2661992-06-30030 June 1992 Amended VC Summer Nuclear Station Semiannual Effluent & Waste Disposal Rept,Jan-June 1992 ML20104B8261992-06-30030 June 1992 Technical Rept 92-2, Seismic Activity Near VC Summer Nuclear Station, for Period Apr-June 1992 ML20114C7791992-06-30030 June 1992 VC Summer Nuclear Station Semiannual Effluent & Waste Disposal Rept for Operating Period 920101 Through 920630 ML20101L9531992-03-31031 March 1992 Technical Rept 92-1, Seismic Activity Near VC Summer Nuclear Station, for Period Jan-Mar 1992 ML20091N6531992-01-27027 January 1992 Technical Rept 91-3, Seismic Activity Near VC Summer Nuclear Station,Jul-Dec 1991 ML20094H0561991-12-31031 December 1991 Semi-Annual Effluent & Waste Disposal Rept for Jul-Dec 1991 ML20091D7911991-12-31031 December 1991 Technical Rept 91-4, Seismic Activity Near VC Summer Nuclear Station for Period Oct-Dec 1991 ML20079E7721991-10-0101 October 1991 Technical Rept 91-2, Seismic Activity Near VC Summer Nuclear Station,Apr-June 1991 ML20082N1231991-06-30030 June 1991 Semiannual Effluent & Waste Disposal Rept for Jan-June 1991 for VC Summer Nuclear Station ML20079C9541991-06-21021 June 1991 Seismic Activity Near VC Summer Nuclear Station,Jan-Mar 1991 ML20072S6471990-12-31031 December 1990 Seismic Activity Near VC Summer Nuclear Station for Oct-Dec 1990, Technical Rept 90-4 ML20086R9571990-12-31031 December 1990 Radiological Environ Monitoring Rept,Jan-Dec 1990 ML20029A8221990-12-31031 December 1990 Effluent & Waste Disposal Semiannual Rept for Jul-Dec 1990. ML20029A4271990-09-30030 September 1990 Seismic Activity Near VC Summer Nuclear Station,Jul-Sept 1990. ML20059G3861990-09-0404 September 1990 NPDES Noncompliance Notification:On 900828,29 & 30,limited Fish Kills Discovered in Circulating Water Discharge Bay. Caused by Thermal Shock from Increasing Discharge Temps Combined W/Fluctuating Water Levels in Reservoir ML20059B5041990-08-20020 August 1990 NPDES Noncompliance Notification:On 900815 & 16,limited Fish Kills Discovered in Plant Circulating Water Discharge Bay. Caused by Thermal Shock from Increasing Discharge Temps Combined W/Fluctuating Water Levels ML20055G3951990-07-16016 July 1990 NPDES Noncompliance Notification:On 900711,limited Fish Kill Discovered in Plant Circulating Water Discharge Bay.Caused by Thermal Shock from Increasing Discharge Temp & Fluctuating Water Levels in Reservoir ML20044B0181990-07-11011 July 1990 NPDES Noncompliance Notification:On 900706,limited Fish Kill Discovered in Plant Circulating Water Discharge Bay.Caused by Thermal Shock from Increasing Discharge Temps Combined W/Fluctuating Water Levels in Facility Reservoir ML20059C0041990-06-30030 June 1990 Semiannual Effluent & Waste Disposal Rept for Jan-June 1990 ML20085M5841990-06-14014 June 1990 NPDES Noncompliance Notification:Chronic Problem W/Ph Values Exceeding Limit of 9.0 at Outfalls 005,006A & 006B ML20085M5811990-03-31031 March 1990 Status Rept-Fish Kill Action Plan 1st Quarter 1990 ML20006B1241990-01-24024 January 1990 Seismic Activity Near VC Summer Nuclear Station for Period Jul- Sept 1989. ML20042E1961989-12-31031 December 1989 Seismic Activity Near VC Summer Nuclear Station,Oct-Dec 1989. ML20246K2581989-08-28028 August 1989 NPDES Noncompliance Notification:On 890822,fish Kill Discovered in Circulating Water Discharge Bay.Caused by Temp Fluctuation in Circulating Water Discharge Bay ML20245J4581989-08-0909 August 1989 NPDES Noncompliance Notification:On 890804,89 Dead Fish Discovered in Circulating Water Discharge Bay.Possibly Caused by Temp Fluctuations at Bottom of Discharge Bay on 890803 ML20247F7111989-07-20020 July 1989 NPDES Noncompliance Notification:On 890626,dead Catfish Discovered in Circulating Water Discharge Bay & Canal at Plant.During 890626-0710,167 Dead Fish Noted in Discharge Area.Fish Kill Suspected to Have Occurred Late on 890624 ML20247E9961989-07-20020 July 1989 NPDES Noncompliance Notification:On 890715,fish Kill Discovered at Plant Circulating Water Discharge Canal.Caused by Thermal Shock ML20246J6371989-06-30030 June 1989 Nonproprietary Semiannual Effluent & Waste Disposal Rept for Operating Period Jan-June 1989 1999-10-15
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ATTACHMENT 3 Suninary of Lagoon pH Problems I
I NPDES pH Limitation Com aliance Discharges 005,006A & dO6B There has been a chronic problem with pH values exceeding the NPDE5 Limit of 9 0 at outfalls 005, 006A and 006B. All of these discharge points involve lagoon treatment systems. When the renewed NPDES permit is issued, pH limits are expected to be restricted f urther, with an upper limit of 8 5.
These extreme pH values have been shown to be related to elgae growth in the lagoons.
The algae, though photosynthesis, change the carbon dioxide balance in the water which causes a change in pH, These pH changes are evident when adequate light and nutrients are available to the algae. Control of effluent pH at the affected outfalls can be approached in the f ollowing ways:
- 1. adjust the pH,
- 2. control or kill the algae,
- 3. reduce the nutrient load, and
- 4. reduce the light input.
Adjustment of the pH at the discharge has not been tried, since any addition of acid would require a SCDHEC construction permit. SCDHEC has informed us that suca a permit is not available to us since V. C. Summer Nuclear Station has an expired NPDES permit.
Construction permits would be considered when the renewed permit is issued We have attempted to control the algae in the lagoons by applying a chelated copper based algicide, K-teat Algicide application has resulted in limited success. There is reason -
to suspect that we are, through continuous use of this algicide, selecting for copper resistant types or strains of algae. It has been difficult to adequately treat the lagoons with algicide because of fluctuating flows through thelagoons and because of SCDHECimposed restrictions on copper concentrations in effluents to Monticello Reservoir The continued use of algicides is not suggested since the presence of algicides in the effluent will probably affect our ability to pass effluent toxicity testing which will be required in the renewed NPDES permit increased in plant chlorination levels have allowed very low levels of chlorine to be discharged into the alum sludge lagoon. The chlorine dissipates in the lagoon and is not measurable at the discharge (006A). This treatment appears to be effective in controlling the algae in the alum sludge lagoon Since the onset of pH problems appeared to coincide with the increased use of phosphate compounds for corrosion control, the use of these phosphate containing compounds has been reduced This reduction appean to have reduceci the magnitude of the problem, particularly in the sewage treatment lagoons (discharge 005) k kg 900614 1437 C pg
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. Pag 2 2 of 3 The plant surge basin (006B) was covered with black plastic to reduce the light input into the lagoon and thereby restrict photosynthesis. This appears to be very effective. This lagoon has had no algae related pH problems since it was covered. If this method is pursued f urther, a more permanent covering will have to be desinned One thing that has complicated evaluation of control methods is that different methods have been tried concurrently. For example, phosphate use was restricted during the same time period that chloie levels were increased The most promising options for control of algae related pH problems are listed below. l t
- 1. Install permanent structures over the ponds to decrease light input.
- 2. Use chlorination to control the algae in the ponds. l l
Adjust the pH at the outf alls by adding acid or carbon dioxide. ;
3.
I Advantages and Disadvantages !
of Options OPTION ADVANTAGE DISADVANTAGE i Light Exclusion a) low operating cost a) higher capital cost b) no manpower needed b) could complicate future modifications or for operation maintenance to lagoons such as liner inst allation, dike repair, or destudging c) may not be feasible for sewage lagoons Chlorination a) lower capital cost a) may not be feasible for sewage lagoons b) would not restrict any b) must be accompamed by dechlorination future modifications or at outfall maintenance c) safety considerations must be consider-ed if gaseous chlorine is used d) operating costs pH Adjustment a) lower capital cost a) safety considerations must be consider.
(acid) ed b) no restriction on future modification or b) operating costs maintenance pH Adjustment a) . low capital cost a) no pilot studies have been done to (CO2) determine degree of effectiveness b) no restriction on future modification or mainte- b) operating costs would be higher than nance light exclusion option
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It may be necessary to use a combination of the listed options, or use different options for different ponds. Also attention should be given to the use in the plant of any compounds that may contribute nutrient sources for the algae in the lagoons.
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- 5. E. Summer
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