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Category:NPDES NONCOMPLIANCE NOTIFICATION
MONTHYEARML20237H3751987-08-14014 August 1987 NPDES Noncompliance Notification:Between 870726-0803 Temp Noncompliances Occurred in Plant Discharge Canal. Noncompliances Resulted from Unusually High River Temps & Continued Hot Weather Conditions ML20205R7771987-03-27027 March 1987 NPDES Noncompliance Notification:On 870319,water Above Daily Max Biological Oxygen Demand Limitations at 005 Discharge. Sys Stabilized by Pumping Cells Out & Increasing Wasting Activities ML20207M9871987-01-0606 January 1987 NPDES Noncompliance Notification:During 861216-870104. Difficulty Experienced W/Maintaining 004 Discharge in Compliance w/7.0 Ph Value.Caused by Increased Vol of Water Discharged to Settling Pond.Water Vol Restricted ML20205H7921986-08-0404 August 1986 NPDES Noncompliance Notification:On 860721,discharge of Ph at Discharge 004 Rated Above Daily Concentration Limits. Caused by Lack of Proper Surveillance to Splitter Box Ph by Station Personnel.Personnel Increased Surveillance ML20212F3181986-08-0101 August 1986 Updated NPDES Noncompliance Notification:On 860723,discharge of Ph Above Daily Concentration Limits Occurred.Results of Flow & Ph Sampling Listed ML20212B3761986-07-29029 July 1986 NPDES Noncompliance Notification:On 860602,while Draining Water Treatment Sludge Pond,Discharge Limitation Exceeded. Pond Drained & Cleaned & Temporary Diversion of Clearwell Overflow to 002 Discharge Discontinued ML20207K8631986-07-25025 July 1986 NPDES Noncompliance Notification:On 860723,discharge of Ph Above Daily Concentration Limitations Occurred.Caused by Inability of Acid Pumps to Control Ph of Water When Lime Feed Sys Malfunctioned.Lime Sys Repair Parts on Order ML20137P9601986-01-27027 January 1986 NPDES Noncompliance Notification:On 860116,biochemical Oxygen Demand Exceeded Limit.Caused by Lack of Proper Attention by Operators & Dumping of Floor Wax Matl Into Wastewater Treatment Sys.Surveillance of Sys Increased ML20137B0931986-01-0606 January 1986 NPDES Noncompliance Notification:On 851231,total Suspended Solids from Discharge Point 005 Analyzed at 1.85 Kg/Day & 98mg/l,exceeding Permit Levels.Caused by Variable Flows to Treatment Plant & Operator Errors ML20137Z1751985-12-0202 December 1985 NPDES Noncompliance Notification:On 851121,biochemical Oxygen Demand & Total Suspended Solid Noncompliances Occurred.Caused by Variable Flows to Treatment Plant & Operator Inattentiveness ML20138J5341985-10-18018 October 1985 NPDES Noncompliance Notification:On 851014,increased Flows & Flow Surges to Treatment Plant Occurred.Cause Not Stated ML20133H9871985-07-31031 July 1985 NPDES Noncompliance Notification:Test Results from 850716 Effluent Sample Indicated Limits Exceeded Per NPDES Discharge Permit.Cause & Corrective Actions Not Specified ML20129H9941985-05-28028 May 1985 NPDES Noncompliance Notification:On 850415,biochemical Oxygen Demand Exceeded Max 1.71 Kg/Day Limit.Caused by Addl People on Site as Result of Repiping & Refueling Outage & Flow Surges to Treatment Plant ML20127M7011985-05-10010 May 1985 NPDES Noncompliance Rept:During Apr,Water Samples for Fecal Coliform Counts Not Collected at 005 Discharge ML20108C8441985-03-0101 March 1985 NPDES Noncompliance Notification:Biochemical Oxygen Demand & Total Suspended Solid Noncompliance Occurred.Caused by Increased Flow to Treatment Plant & Inflated Calculated Discharge Due to Line Break in Potable Water Sys ML20105B7821985-01-25025 January 1985 NPDES Noncompliance Notification:On 850116,biochemical Oxygen Demand Exceeded Permit Limit.Caused by Flow Surges & Increased Flow Due to Addl Workers During Refueling ML20104B6831985-01-22022 January 1985 NPDES Noncompliance Notification:On 841219,total Daily Suspended Solids Found Above Limit.Caused by Problems W/Sewage Treatment Tanks & Increased Sewage Load.Load Limiting Effort Underway 1987-08-14
[Table view] Category:TEXT-ENVIRONMENTAL REPORTS
MONTHYEARML20206S4971998-12-31031 December 1998 Annual Radiological Environ Rept,Radiological Environ Monitoring Program,Jan-Dec 1998 ML20206E5561998-12-31031 December 1998 1998 Annual Rept Number of Personnel & Man-Rem by Work & Job Function ML20206J2501998-12-31031 December 1998 CNS Annual Radioactive Effluent Release Rept for 1998 ML20209B8381997-12-31031 December 1997 Corrected 1997 Annual Rept of Number of Personnel & Man-Rem by Work & Job Function ML20217J0391997-12-31031 December 1997 Annual Radiological Environ Rept for Period Jan-Dec 1997 ML20217J5231997-12-31031 December 1997 CNS Annual Operating Rept Radioactive Effluents for 970101- 1231 ML20209B8341996-12-31031 December 1996 Corrected 1996 Annual Rept of Number of Personnel & Man-Rem by Work & Job Function ML20137W8221996-12-31031 December 1996 Annual Operating Rept for Jan-Dec 1996, Including Personnel & man-rem Exposure by Work & Job Function ML20140E8141996-12-31031 December 1996 Annual Operating Rept Radioactive Effluents for 960101-1231 ML20138C5761996-12-31031 December 1996 Annual Radiological Environ Operating Rept for 1996 ML20108A9491995-12-31031 December 1995 NPPD CNS Annual Radiological Environ Operating Rept Environ Radiation Monitoring Program Jan-Dec 1995 ML20108B4321995-12-31031 December 1995 CNS Annual Operating Rept Radioactive Effluents Jan-Dec 1995 ML20108C2101995-12-31031 December 1995 Annual Operating Rept for Period of Jan-Dec 1995 ML20092B5631995-06-30030 June 1995 Correction to 1993 Semiannual Radioactive Matl Release Rept for Jan-June 1993 ML20092A7361995-06-30030 June 1995 Semi-Annual Operating Rept Radioactive Effluents Jan-June 1995 ML20087H4771994-12-31031 December 1994 Annual Radiological Environ Operating Rept, for Period of 940101-1231 ML20080Q6351994-12-31031 December 1994 Annual Operating Rept for Jan-Dec 1994 ML20080M9821994-12-31031 December 1994 Semiannual Operating Rept Radioactive Effluents Jul-Dec 1994 ML20072N0631994-06-30030 June 1994 CNS Semiannual Operating Rept Radioactive Effluents Jan- June 1994 ML20065L1981993-12-31031 December 1993 Annual Radiological Environ Operating Rept Environ Radiation Monitoring Program Jan-Dec 1993 ML20067C7451993-12-31031 December 1993 Semiannual Operating Rept Radioactive Effluents Jul-Dec 1993 ML20056G3461993-06-30030 June 1993 Semiannual Operating Rept, Radioactive Effluents,Jan-June 1993 ML20114B7731992-06-30030 June 1992 Semiannual Radioactive Matl Release Rept,Jan-June 1992, Cooper Nuclear Station ML20095G7641991-12-31031 December 1991 Annual Radiological Environ Operating Rept - Environ Radiation Monitoring Program 1991. W/920409 Util Ltr ML20094G7671991-12-31031 December 1991 Semiannual Operating Report Radioactive Effluents, Jul-Dec 1991 ML20079N2531991-11-11011 November 1991 Rept Presenting Biological,Engineering & Hydrological Data Related to once-through Operation of Plant NLS9100534, Semiannual Operating Rept of Radioactive Effluents for Jan-June 19911991-06-30030 June 1991 Semiannual Operating Rept of Radioactive Effluents for Jan-June 1991 ML20024G7501990-12-31031 December 1990 Annual Radiological Environ Rept 1990. W/910402 Ltr NLS9100176, Semiannual Operating Rept Radioactive Effluents Jul-Dec 19901990-12-31031 December 1990 Semiannual Operating Rept Radioactive Effluents Jul-Dec 1990 NLS9000350, Semiannual Operating Rept Radioactive Effluents Jan-June 19901990-06-30030 June 1990 Semiannual Operating Rept Radioactive Effluents Jan-June 1990 ML20042D7711989-12-31031 December 1989 Semiannual Operating Rept Radioactive Effluents,Jul-Dec 1989. W/900320 Ltr ML20042E0831989-12-31031 December 1989 Annual Radiological Environ Operating Rept 1989. NLS8900310, Semiannual Radioactive Effluent Release Rept for Cooper Nuclear Station for Jan-June 19891989-06-30030 June 1989 Semiannual Radioactive Effluent Release Rept for Cooper Nuclear Station for Jan-June 1989 ML20244E1761988-12-31031 December 1988 Annual Radiological Environ Operating Rept for 1988 NLS8900085, Semiannual Operating Rept Radioactive Effluents for Jul-Dec 19881988-12-31031 December 1988 Semiannual Operating Rept Radioactive Effluents for Jul-Dec 1988 NLS8800435, Semiannual Operating Rept Radioactive Effluents,Jan-June 19881988-06-30030 June 1988 Semiannual Operating Rept Radioactive Effluents,Jan-June 1988 ML20151R5681987-12-31031 December 1987 Annual Radiological Environ Operating Rept for 1987 NLS8800117, Semiannual Operating Rept - Radioactive Effluents,Jul-Dec 19871987-12-31031 December 1987 Semiannual Operating Rept - Radioactive Effluents,Jul-Dec 1987 ML20237H3751987-08-14014 August 1987 NPDES Noncompliance Notification:Between 870726-0803 Temp Noncompliances Occurred in Plant Discharge Canal. Noncompliances Resulted from Unusually High River Temps & Continued Hot Weather Conditions ML20236Q9201987-06-30030 June 1987 Errata to Semiannual Radioactive Matl Release Rept for Jan-June 1987, Consisting of Corrected Tables 1-11,App C Re Calculated Doses Resulting from Exposure to Radioactivity Due to Liquid & Gaseous Effluents NLS8700412, Semiannual Operating Rept,Radioactive Effluents for Jan- June 19871987-06-30030 June 1987 Semiannual Operating Rept,Radioactive Effluents for Jan- June 1987 ML20205R7771987-03-27027 March 1987 NPDES Noncompliance Notification:On 870319,water Above Daily Max Biological Oxygen Demand Limitations at 005 Discharge. Sys Stabilized by Pumping Cells Out & Increasing Wasting Activities ML20207M9871987-01-0606 January 1987 NPDES Noncompliance Notification:During 861216-870104. Difficulty Experienced W/Maintaining 004 Discharge in Compliance w/7.0 Ph Value.Caused by Increased Vol of Water Discharged to Settling Pond.Water Vol Restricted ML20205H9531986-12-31031 December 1986 Annual Radiological Environ Rept for 1986 ML20205H7921986-08-0404 August 1986 NPDES Noncompliance Notification:On 860721,discharge of Ph at Discharge 004 Rated Above Daily Concentration Limits. Caused by Lack of Proper Surveillance to Splitter Box Ph by Station Personnel.Personnel Increased Surveillance ML20212F3181986-08-0101 August 1986 Updated NPDES Noncompliance Notification:On 860723,discharge of Ph Above Daily Concentration Limits Occurred.Results of Flow & Ph Sampling Listed ML20212B3761986-07-29029 July 1986 NPDES Noncompliance Notification:On 860602,while Draining Water Treatment Sludge Pond,Discharge Limitation Exceeded. Pond Drained & Cleaned & Temporary Diversion of Clearwell Overflow to 002 Discharge Discontinued ML20207K8631986-07-25025 July 1986 NPDES Noncompliance Notification:On 860723,discharge of Ph Above Daily Concentration Limitations Occurred.Caused by Inability of Acid Pumps to Control Ph of Water When Lime Feed Sys Malfunctioned.Lime Sys Repair Parts on Order NLS8600262, Semiannual Operating Rept Radioactive Effluents,Jan-June 19861986-06-30030 June 1986 Semiannual Operating Rept Radioactive Effluents,Jan-June 1986 ML20195E8201986-04-30030 April 1986 Errata to Cooper Nuclear Station Semiannual Operating Rept, Radioactive Effluents Jan-June 1984 1998-12-31
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W Nebraska Public Power District "
July 29, 1986 Mr. Jay D. Ringenberg Section Head, Permits and Compliance Water Quality Division Nebraska Department of Environmental Control P.O. Box 94877 Lincoln, Nebraska 68509-4877
Dear Mr. Ringenberg:
Subjects Nebraska Public Power District (NPPD)
Cooper Nuclear Station (CNS)
NPDES Permit No. NE 0001244 Draining and Cleaning of Sludge Settling Pond This letter confirms the completion of the draining and cleaning of the sludge settling pond at CNS and discontinuing the temporary diversion of the clearwell overflow to the 002 discharge. Also, this letter provides results of the additional analyses, which were performed as directed by your department, and written notification, as directed by Dick Varner, of NPDES discharge violations at the 004 discharge during this time period.
Draining of the water treatment sludge pond was initiated on June 2, 1986, to facilitate the cleaning of the sludge settling pond. Flows to the sludge pond were restricted when and where possible and planks were removed from the pond overflow structure in intervals to reduce the discharge of lime. Due to the volume of water entering the pond (estimated flow of 100-300 gallons / minute), the water picked up lime as it flowed over the lime bed in the pond resulting in several violations in total suspended solids (Table 1). To reduce this flow, permission was obtained from your department to temporarily divert water from the clearwell overflow to the 002 headwall outfall. On June 7, this diversion was completed, and flow at the 004 discharge was reduced to 1-2 gallons / minute. During the remainder of the draining operation, which was completed on June 8, total suspended solids at the 004 outfall remained within NPDES discharge limitations, but pH values did not.
Lime removal from the sludge settling pond was initiated on June 9 and completed on June 23. During the lime removal operation, total suspended solids remained within NPDES permit limitations while pH values ranged slightly above and ulightly below the maximum permit limitation of 9.O. Following completion of the 8608060310 860729 h PDR 8
ADOCK 05000298 ,g PDR i
l
Mr. Jey D. Ringsnborg
- July 29, 1996 Page 2 lime removal operation, the planks were added to the sludge pond overflow structure, the clearwell overflow was realigned to the 004 discharge, and flows were established to the sludge pond.
If you have any questions regarding these responses, please contact me.
Sin ely, u
L. John op er Environmental honager LJC/eyctdg cc: R. D. Martin D. 8. Vassallo G. R. Horn R.L. Beilke File CB175
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Table 1. Total suspended solids and pH analyses conducted at CNS's 002 (headwall) and 004 (water treatment sludge i I
settling pond) discharges during draining and cleaning i of the sludge settling pond. L i Total ,
} Suspended !
j Flow Solidt t
., Date Time com oH mo/1 Comments I
j 002 Discharoe i
j 06/08 1130 50 8.7 '
06/23 1330 50 7.2 1
j 004 Discharoe l 1
- 06/02 1205 30 7.7 3.0 Prior to draining pond
)
l 06/02 1220 300 7.6 2.0 Started draining pond l
\
06/02 1400 100 8.4 12.0 -
I 1
i 06/02 1400 300 9.5 12.0 Pulled board at Weir 06/02 1545 100 8.4 673.0*
I I 06/02 1545 300 8.4 168.0* Pulled board at weir '
)'
06/03 1430 100 8.0 42.0 06/03 1430 300 8.4 3,437.0* Pulled board at weir t
l 06/04 1050 100 9.0 546.0* 1 i i j 06/04 1050 100 9.1* 281.0* l j 06/05 1300 200 9.1* 3,197.0* - i j 06/06 1030 200 10.1* 3,497.0* l i
06/07 1030 1 9.8* 8.0 Clearwell overflow to 002 1
- 06/08 1130 2 9.3* 8.0 Completed draining pond !
. ?
l 06/09 1100 2 8.9 17.0 Started lime removat j i
4 06/23 1330 0 9.1* 32.0 Completed lime removal l
___________________________________________________________________ i l
- Sample exceeds NPDES discharge limitation. [
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