ML20045C955
| ML20045C955 | |
| Person / Time | |
|---|---|
| Site: | Fort Saint Vrain  |
| Issue date: | 06/16/1993 |
| From: | Warembourg D PUBLIC SERVICE CO. OF COLORADO |
| To: | Joseph Austin NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM), NRC OFFICE OF NUCLEAR MATERIAL SAFETY & SAFEGUARDS (NMSS) |
| References | |
| P-93057, NUDOCS 9306250151 | |
| Download: ML20045C955 (45) | |
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- "Le h Public Service' 16805 WCR 191/2; Platteville, Colorado 80651 June 16,1993 ,
Fort St. Vrain )
Unit No.1 4 P-93057 U. S. Nuclear Regulatory Commission ;
ATTN: Document Control Desk Washington, D. C. 20555 Attention: Mr. John H. Austin, Chief Decommissioning and Regulatory Issues Branch Docket No. 50-267
SUBJECT:
NPDES Permit Reports
REFERENCE:
PSC Letter, Warembourg to NRC Document Control Desk, dated March 17,1993 (P-93029) ,
Dear. Mr. Austin:
Attached for your information are copies of non-compliance reports related to the Fort St. Vrain (FSV) National Pollutant Discharge Elimination System (NPDES) Permit, and copies of proposed changes to the NPDES Permit. This information is provided in accordance with the FSV Non-Radiological Technical Specifications, Appendix B to i Facility Operating License No. DPR-34.
The attached non-compliance reports cover the period from 1989 through the present time, and are provided in accordance with Section 3.2.a of the FSV Non-Radiological Technical Specifications. Public Service Company of Colorado (PSC) has determined that copies of these reports were not provided previously to the NRC as required, due to an oversight. At the time of the events, PSC did notify the NRC of these non-compliance conditions via telephone notifications in accordance with 10 CFR l 50.72(b)(2)(vi), with the exception of the August 1989 incident. However, PSC i acknowledges that these telephone notifications did not satisfy the requirements of the FSV Non-Radiological Technical Specifications, and we will submit future non-compliance reports as required.
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i P-93057 -
June 16,1993 -
Page 2 The attached copies of proposed changes to the NPDES permit are submitted in
! accordance with Section 3.2.d of the FSV Non-Radiological Technical Specifications.
The current NPDES Permit is the Wastewater Discharge Permit for the Fort St. Vrain Station, CO-000ll21, which was provided to the NRC via the referenced letter.
If you have any questions regarding this information, please contact Mr. M. H. Holmes at (303) 620-1701.
Sincerely,
~-jgyjI DY Don W. Warembourg
! Decommissioning Program Director DWW/SWC l
Attachments I
cc: w/o attachments Regional Administrator, Region IV Mr. Ramon E. Hall, Director Uranium Recovery Field Office i
Mr. Robert M. Quillin, Director l Radiation Control Division j Colorado Department of Health l
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Attachments to P-93057 l
NPDES Non-compliance Reports, PSC letters dated: .
June 11,1993 May 24,1993 May 6,1993 April 9,1993, with followup letter dated April 21,1993 (farm pond study)
March 31,1993 February 5,1993 January 26,1993 May 19,1992 May 20,1991 March 5,1991 May 22,1990 August 18, 1989, with followup letter dated August 31,1989 (elevated iron concentrations)
Wastewater Discharge Permit Proposed Revisions:
Draft Amendment, dated March 31,1993 PSC Comments on Draft Amendment, dated June 4,1993 I
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4 Public Service ic Serv.ice ----e-0 Publ. Governmental and Environmental Affairs P. o. Box B40 Denver, CO 80201 0840 June 11 1993 -
Ms. Pat Nelson Industrial Unit Chief Permits and Enforcement Section Water Quality Control Division Colorado Department of Health 4300 Cherry Creek Drive South
! Denver, Colorado 80222-1530 RE: Public Service Company of Colorado - Fort St. Vrain Station CDPS Permit No. CO-0001121
Dear Pat:
1 Enclosed please find an amended non-compliance report for the Public Service Company of Colorado Fort St. Vrain Station. The non-compliance report details the pH exceedance reported to you on l June 4, 1993 and includes the time the incident was concluded. l If you have any questions regarding this report, please feel 1 I
! free to contact me at 294-2814.
l' Sin erely, k
ouise C. Meyerkord Unit Manager Environmental Programs Attachment cc: U.S. EPA, Region VIII George Vonesh
- Don Warembourg l Dave Fetterolf Mike Holmes Mike Niehoff Terry Staley Jesse Brungardt Becky Sheridan l
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NPDES DISCHARGE PERMIT NONCOMPLIANCE REPORTING FORM
- Date: 6/4/93
! Applicable Permit No.: CO-0001121
] Discharge No.: 001B L GENERAL
- Company
- Public Service Comnany of Colorado Mailing Address: P.O. Box 840 Denver. CO 80201 l Plant Name: Fort St. Vrain Station Plant Location: Near Platteville. Colorado i
- County
- Weld i
- H. NONCOMPLIANCE REPORT A. Description and Cause of Noncompliance
- A sample collected at discharge point 001B at l 1:15 am on 6/4/93 showed a pH of 9.23 s.u. The cause of this elevated pH is believed to be related to algal activity in the raw water make-up ponds. pH of the west pond is 9.4 s.u. and i of the east pond is 9.3 s.u.
. B. Noncompliance Period:
j Started: 1:15 A.M. P.M. 6/4/93 Date
- Ended
- A.M. 9:45 P.M. 6/4/93 Date C. Action Taken to Reduce, Eliminate, Prevent: Additional sampling was performed upon discovery of the elevated pH level. Since it appears that the pH elevation is due to biological i activity in the raw water ponds, additional make-up water is being added to the ponds to lower
- the pH in the ponds by neutralization and causing turnover of the pond. The pH was back into compliance at 9
- 45 pm 6/4/93, when the pH was measured at 8.97 s.u.
D. Person Initiatin : Louise Meyerkord Signature:
ll . AULV4 fD A--J l E. Water Quality Control Di sion Notification Requirements:
, Telephone (24 hrs.): 6/4/93 Date Ms. Pat Nelson Notified 3:21 p.m.
- Written (5 days)
- 6/4/93 Date Notified 4
7 SUBMIT REPORT TO:
- Ms. Pat Ndson Regional Admin *strator 4
Colorado Department of Heakh U.S. EPA
. Water Quality Control Division One Dennr Place, Suite 500 Monitoring & Enforcement Section 99918th Street SWMC l 4300 Cherry Creek Drive South Denver, CO 80202-2405 Denver, CO 80222-1530 Atta.: Enfoseement - Permit Program j~ In the event of mon <ompliance for the FSV Station , a verbal report must be made to the Nuclear Regulatory Commission by the FSV shift supervisor (620-1990) within four hours aner verbally motifying the Water Quality Control Division.
Contacted the Psv shiA supervisor at 30.3 p m. on 6/4/93.
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i Public Service c- - c-r-0 Public Service' P.O. Box 840 Denver, CO 80201- 0840 May 24, 1993 Colorado Department of Health Water Quality Control Division Monitoring and Enforcement 4300 Cherry Creek Drive South Denver, Colorado 80222-1530 RE: Public Service Company of Colorado -
Fort St. Vrain Station Permit /CO-0001121
Dear Sir:
On February 25, 1993, the final wastewater discharge permit for the Fort St. Vrain Station (FSV) was received from the' Colorado Water Quality Control Division (CWQCD). This permit became effective on. April 1, 1993. ;
Page 17 of the rationale and page lh of the permit establish a maximum pH limitation of 9.0 s.u. for outfall 006, the internal monitoring / limitation point from the turbine building sump drain.
Unfortunately, this upper pH limitation is unattainable due to the necessity for higher pH conditions maintained in the condensate and boiler systems for corrosion protection purposes. The pH of condensate must be maintained at a level 2 9.2 s u. and the boiler water pH is maintained at 11.4 to 11.8 s.u. Since these two wastestreams make up the effluent from the turbine building sump, it is impossible to meet the upper pH limitation of 9.0's.u. The maximum pH of this effluent for the month of April 1993 is reported on the attached discharge monitoring report as 9.2 s.u. The pH at outfall 006 will generally be at or above this level. Therefore, on March 15, 1993, PSC requested that the maximum pH limitation be revised to 10.5 s.u.
On May 10, 1993, a draft amendment to the FSV wastewater discharge permit was received from the CWQCD, which allowed for the requested change to the maximum pH limitation at outfall 006. This amendment is currently in public comment until June 4, 1993, at which time the new limitation will be incorporated into the FSV wastewater discharge permit. Until that time, the pH at outfall 006 remains out of compliance with the current maximum pH l limitation.
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If you have any questions or concerns regarding'this matter, i please call me at 294-2814. l l
l Sin erely,
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Lbuise C. Meyerk d Unit Manager i Environmental Programs i l
l cc: D. Warembourg M. Holmes M. Niehoff l S. Miller l D. Fetterolf l G. Vonesh j J. Brungardt j i
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Govemmental and Environmental Affairs P. o. Box B40 Denver, Co 80201 0840 May 6, 1993 Ms. Anne Ihlenfeldt Industrial Enforcement Engineer Permits and Enforcement Section water Quality control Division Colorado Department of Health 4300 Cherry Creek Drive South Denver, Colorado 80222-1530 RE: Public Service Company of Colorado -
Fort St. Vrain Station CDPS Permit No. CO-0001121
Dear Anne:
Enclosed please find a non-compliance report for the Public Service Company of Colorado Fort St. Vrain Station. The non-compliance report details the TSS exceedance reported to you on May 6, 1993.
If you have any questions regarding this report, please feel free to contact me at 294-2814.
Si erely,
,4 i hff V&
udse C. Meyerko ,
Unit Manager Environmental Programs Attachment cc: U.S. EPA l George Vonesh Don Warer: bourg Dave Fetterolf Becky Sheridan l .
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l NPDES DISCHARGE PERMIT NONCOMPLIANCE REPORTING FORM ,
Date: 5/6/93 I Applicable Permit No.: CO-0001121 Discharge No.: 00.13 I. GENERAL Company: Public Service Company of Colorado Mailing Address: P.O. Box 840 Denver. CO 80201 ;
l Plant Name: Fort St. Vrain Station :
Plant Location: Near Platteville. Colorado County: Weld l
II. NONCOMPLIANCE REPORT A. Description and Cause of Noncompliance: A sample _ collected at discharge point 001B at l
8:30 am on 5/4/93 showed a net TSS of 57.5 mg/1. The cause of this elevated TSS level is
! undetermined at this time, but the solids collected on the filter appeared to be sandy in nature.
l B. Noncompliance Period:
l Started: 8:30 A.M. P.M. 5/4/93 Date Ended: 8:30 A.M. P.M. 5/5/93 Date C. Action Taken to Reduce, Eliminate, Prevent: Additional sampling was performed upon discovery of the elevated TSS level. The discharge was back into compliance at 8:30 am on 5/5/93. The cause of the elevated TSS has not been determined, but a thorough investigation is underway to determine its cause and take appropriate measures to prevent recurrence.
D. Person Initiating Report: Louise Meyerkord l Signature: ,
E. Water Quality Control Division Notification Requirements:
Telephone (24 hrs.): 5/6/93 Date Ms. Anne Ihlenfeldt Notified 11:30 a.m.
Written (5 days): 5/6/93 Date Notified SUBMIT REPORT TO:
l Ms. Anne Ihleafeldt Regional AA=inktrator l Colorado Department of Heskh U.S. EPA l Water Quality Control Division One Denver Place, Suke 500 l
Mondoring & Enforcement Section 99918th Street 8WM-C -
4300 Cherry Creek Drive South Denver, CO 80202-2405 l
Denver, CO 80222-1530 Atta.: Enforcement - Perak Pmgram I-In the event of non-compliance for the FSV Station , a verbal report must be made to the Nuclear Regulatory Commission by the FSV shift supervisor (620-1990) withis four hours mAer verbally notifying the Water Qualty Control Division.
Contacted the PsV shiA supervisor at 11:31 am on 5/6/93.
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Public Service c-, c--
0 Public Service' Govemmental and Environmental Affairs P. O. Bcx 840 Denver, CO 80201 0840 April 9, 1993 Ms. Anne Ihlenfeldt Industrial Enforcement Engineer Permits and Enforcement Sectio" 4 Water Quality Control Divisio4 l Colorado Department of HealG 4300 Cherry Creek Drive Solun Denver, Colorado 80222-1570 ,
RE: Public Service Ccspany cf Colo.n do -
Fort St. Vrain Station CDPS Permit M. CO-0001.121 l j
Dear Anne:
Enclosed please find a ne vcomplianct. report for the Public Service Company of Colorado Foz L St. 7rr' ' n Station. The non-compliance report details the pH i a.. dance reported to you on April 9, 1993.
If you have any questions regarding this report, please feel free to contact me at 294-2814.
Sincerely, NW ouise C. Meyerk d NL 4 Unit Manager Environmental Programs Attachment cc: George Vonesh Don Warembourg ;
Dave Fetterolf Becky Sheridan 1
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Attachment #2 NPDES DISCRARGE PERMIT NONCOMPLIANCE REPORTING FORM i Date: 4/9/93 i CO-0001121
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Applicable Permit No.:
Discharge No.: 001 A
- 1. GENERAL
. Company: Public Service Company of Colorado P.O. Box 840, Denver, CO 80201 Mailing Address: '
3 Plant Name: Ft. St. Vrain Station l Near Platteville, CO ,
Plant Location: I i
County: Weld i
II. NONCOMPLIANCE REPORT A. Description and cause of Noncompliance:
As a new requirement of the renewal wastewater discharge permit, the 001 A .
effluent was monitored for pH for the first time at 9:30 a.m. 4/6/93. The !
j pH was 10.0 S.U . . The influent water to the farm pond was 8.8 S.U., ,
- so the increase in pH. occurs in the pond itself and may be related to
. biological activity, e.g. algal influences.
B. Noncompliance Period: j Started: 9:30 A.M. P.M. 4/6/93 Date ;
j Ended: A.M. P.M. Date s C. Action Taken to Reduce, Eliminate, Prevent:
A study will be conducted to assess the cause of increased pH.
1 This study will address the biological factors influencing the pH in the farm pond.
D. Person Initiating Report: Louise C. Meyerkord f i
Signature: )
E. Water Quality Control Division Notification Requirements: l Telephone (24 hrs.): 4/8/93 Date Ms Anne lhlenfeldt Notified Written (5 days): 4/9/93 Date SUBMIT REPORT To:
Xs. Anne Ihlenfeldt Regional Administrator colorado Department of Health U.S. EPA Water Quality Control Division one Denver "r. ace, Suite 300 2 Monitoring & Enforcement Section 999 18th St est 8WM-C 4300 Cherry Creek Drive South Denve:c, Colorado 80202-2405 Denver, Colorado 80222-1530 Attn: Enforcement - Permit Program I In the event of non-compliance for the FSV Station, a' verbal report must be made to the Nuclear Regulatory Commission by the FSV shift supervisor (620-1090)
- within four hours after verbally notifying the Water Quality control Division.
Contacted Ft. St. Vrain shift supervisor / control room at 9:00 a.m. 4/8/93.
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Q Public Service' Govemmental and l
Environmental Af' airs ;
P. o. Box 640 Denver CO 80201 0840 April 21, 1993 Mr. Don Holmer !
Industrial Permits Engineer l
Permits and Enforcement Section i Water Quality Control Division i
Colorado Department of Health 4300 Cherry Creek Drive South '
Denver, Colorado 80222-1530 RE: Public Service Company of Colorado - Fort St. Vrain l Station Permit /CO-0001121
Dear Don:
'I On February 25, 1993, the final wastewater discharge parmit i
for the Public Service Company of Colorado (PSC) Fort St. Vrain !
} Station (FSV) was received from the Colorado Water Quality control l l Division (CWQCD). This permit became effective on April 1, 1993.
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' Page 1c of the permit defines the discharge limitations for outfall 001A to the South Platte River from the farm pond and includes limiting the pH to the range of 6.5 to 9.0 standard units !
l (s.u.). At 9:30 am on April 6, 1993, the pH was measured at this outfall and determined to be 10.0 s.u., despite the fact that the {
l pH of the influent water to the farm pond was measured at 8.8 pH. '
Investigations of this situation indicated that the increase in pH occurred in the pond itself and may be related to biological activity in the pond, particularly algal influences.
1 on AprilVerbal notification 6, 1993 was this regarding made to Ms. Anne Ihlenfeldt at 9:00 am-incident. In discussions with Ms.
Ihlenfeldt, she indicated that it is not unusual for algae to ,
influence pH in the manner seen in the farm pond. She suggested that a request for initiating a compliance schedule to assess the factors influencing the pH in the farm pond, be submitted to you. l Therefore, PSC proposes that a compliance schedule be i
initiated to determine the factors influencing pH in the farm pond and to assess the seasonal nature of the influencing factors, as.
they appear to be biological in nature. This study will extend for a one year period to be initiated as soon as approval for the study l is received from the CWQCD. The following analysis will be conducted throughout the study period:
1.) pH to be measured weekly at the Goosequill Ditch prior to the farm pond, at the inlet to and the outlet from the pond, at the center of the pond on the surface of the water, and S
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. 1 near the bottom at the deepest point in the pond 1
2.) Total biomass and chlorophyll content to be measured weekly at the outlet from the pond, at the center of the pond on the surface of the water, and near the bottom at the ,
j deepest point in the pond 3.) Ammonia to be measured weekly at the inlet to and the outlet from the pond, at the center of the pond on the surf ace I of the water, and near the bottom at the deepest point in the l pond 4.) Soil sampling and analysis to be conducted monthly at four locations surrounding the pond to include pH, ammonia, and phosphate It is recognized that, during the winter months, access to the center of the pond may be limited by freezing conditions and therefore weekly sampling may not be possible.
l PSC proposes that the results of this study be submitted to l the CWQCD on a quarterly basis; that is, a report of the previous three months analytical results will be submitted by the end of the following month.
PSC requests that the current pH limitation of 6.5 to 9.0 s.u.
at the 001A outfall from the farm pond be suspended during the duration of the study and that the study be utilized to assess the need for future pH limitations at this outfall. )
If you have any questions or concerns regarding this request, please call me at 294-2814. Thank you for your cooperation in this matter. j Sincerely, ,
}$$ & fU. &" A
-Louise C. Meyer.ord
- 6 Unit Manager Environmental Programs cc: D. Warembourg D. Fetterolf .
G. Vonesh J. Brungardt D. Clarkson G. Nishimoto l
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$ Public Service' '
Govemmental and Environmental Af' airs -
P. o. Box B40 -
Denver, Co 80201 0840 March 31,:1993 Ms. Anne Ihlenfeldt Industrial Enforcement Engineer Permits and Enforcement Section Water Quality Control Division-Colorado Department of Health 4300 Cherry Creek Drive South Denver, Colorado 80222-1530 RE: Public Service Company of' Colorado -
Fort St. Vrain Station CDPS Permit No. CO-0001121 l
Dear Anne:
Enclosed please find a non-compliance report for the Public ,
Service Company of Colorad.o Fort St. Vrain Station. The non- I compliance report details the TSS exceedance reported to you on March 31, 1993.
l If you have any questions regarding this report, please feel free to contact me at 294-2814. l Sincerely, ', ,
bO b4]06 b5 V Louise C. MeyerkQ'fd j Unit Manager '
Environmental Programs cc: George Vonesh -
Don Warembourg Dave Fetterolf -
Becky Sheridan
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Attachment #2 NPDES DISCHARGE PERMIT NONCOMPLIANCE REPORTING FORM Date: 3/31/93 Applicable Permit No.: Co-0001121 l I. GENERAL Discharge No. : 0 ISB Company: Public Service Coopany of Colorado Mailing Address: P.O. Box 840, Denver. CO 80201-0840 Plant Name: Ft. St. Vrain Plant Location: Near Platteville, CO County: k'e ld
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II. NONCOMPLIANCE REPORT A. At 8:30a.m., 3/30/93, a net TSS DescriptionandCauseofNoncombliance:
value or 214 mg/l was measured at the ISB discharge. The cause of the non-compliance with the daily maximum-net TSS limit (and subsequently the monthly ,
average limit) was maintenance work being performed upstream in the Goosequill I Ditch. The net TSS was back in compliance at 10:00a.m., 3/30/93; the net TSS at that ti=e was 36 mg/1.
B. Noncompliance Period:
Started: 8:30 A.M. P.M. Date 3/30/93 Ended: 10:00 A.M. P.M. Date 3/30/93 C. Action Taken to Reduce, Eliminate, Prevent:
The alternate discharge path to the St. Vrain Creek will be utilized during performance of maintenance activities in the Goosequill Ditch.
D. Person Initiating Report: Louise C. Meyerkord Signature:
E. Water Quality Control Division Notification Requirements:
3 : 30p.m. Telephone (24 hrs.): 3/31/93 DateMs. Anne Ihlenfeldt Notified Written (5 days): 3/31/93 Date SUEMIT REPORT TO:
Ms. Anne Ihlenfeldt Regional Administrator Colorado Department of Health U.S. EPA Water Quality control Division one Denver Place, Suite 300 Monitoring & Enforcement Section 999 18th Street 8WM-C 4300 Cherry Creek Drive South Denver, Colorado 80202-2405 Denver, Colorado 80222-1530 Attn: Enforcement - Permit Program In the event of non-compliance for the TSV Station, a verbal report must be made to the Nuclear Regulatory Co:. mission by the FSV shift supervisor (620-1090) within four hours after verbally notifying the Water Quality control Division.
Notified Ft. St. Vrain Shift Supervisor at 3:33p.m., 3/31/93
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Pubile Service
- e Public Service' - v < c i r e-P O. Box B40 Denver, CO 80201 0840 1
February 5, 1993 Ms. Anne Ihlenfeldt Industrial Enforcement Engineer Permits and Enforcement Section Water Quality Control Division 4
Colorado Department of Health 4300 Cherry Creek Drive South Denver, Colorado 80222-1530 RE: Public Service Company of Colorado -
Fort St. Vrain Station CDPS Permit No. CO-0001121
Dear Anne:
Enclosed please find a non-compliance report for ';he Public ,
Service Company of Colorado Fort St. Vrain Station. 'The non - i compliance report details the oil and grease exceedance reported to l you on February 5, 1993. j l
If you have any questions regarding this report, please feel i free to contact me at 294-2814. i 1
incerely, 1
&& hf5 b Louise C. Meyeryord !
Unit Manager )
Environmental Programs !
Attachment ;
cc: George Vonesh Don Warembourg l Steve Miller Jesse Brungardt
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l NPDES DISCRARGE PERMIT NONCOMPLIANCE REPORTING FORM Date: 2/5/93 Applicable Permit No.: Co-000ll21 Discharge No.: 001B 2.' GENERAL 1
Company: Public Service Company of Colorado Mailing Address: P.o. Box 840 I
Plant Name. Fort St. Vrain Station Plant Location: Near Platteville, Colorado County: W'ld II. NONCOMPLIANCE REPORT A. Description and Cause of Noncompliance: Th sam 1 fe taken at outfall 001B at 1:30PM on 2/2/93 indicaIe8 il an and oilgre$segreasE an of 15mg/1. The elevated oil and grease was caused by problems at the turbine building sump oil separator. The discharge was diverted to outi 002A prior to discovery of the elevated oil and grease level. The' oil an ,
grease level at 002A was lmg/l at 21:nnhM on 2/3/93.
B.
Noncompliance Period:
l Started: A.M. 1: 30 p.M. 2/2/93 Date Ended: 11200 A.M. P.M. 2/3/93 Date C. Action Taken to Reduce, Eliminate, Prevent: !
The oil separator problems are being resolved and closer monitoring of this system will be implemented.
D. Person Initia ip Report: euise C. F;e y e r k o r d I Signature: [#hA/>/ N/#4[A 4[ M E. WaterQuali[yControlDivisio[NotificationRequirements:
8:30AM Telephone (24 hrs.): 2/5/93 Date551hEEIldt Notified Written (5 days): 2/5/93 DateMs. Anne Ihlenfeldt l
SUBMIT REPORT TO:
Ms. Anne Ihlenfeldt Regional Administrator Colorado Department of Health U.S. EPA Water Quality Control Division One Denver Place, Suite 5,00 l
Monitoring & Enforcenent Section 999 18th Street BWM-C 4300 Cherry Creek Drive South Denver, Colorado 80202-2405 i
Denver, Colorado 80222-1530 Attn: Enforcement -
Permit Program
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! . Public Service i
l Public Service' c-<'c'-
P.O. Box B40 j Denver, CO 80201 0840 January 26, 1993 l Ms. Anne Ihlenfeldt i Industrial Enforcement Engineer l
Permits and Enforcement Section Water Quality Control Division l Colorado Department of Health l 4300 Cherry Creek Drive South Denver, Colorado 80222-1530 l
j RE: Public Service Company of Colorado -
Fort St. Vrain Station CDPS Permit No. CO-0001121
Dear Anne:
Enclosed please find a non-compliance report for the Public l Service Company of Colorado Fort St. Vrain Station. The non-compliance report details the TSS exceedance reported to you on January 25, 1993.
If you have any questions regarding this report, please feel free to contact me at 294-2814.
7 l S,incerely, -/
i N1Aki bY ouise C. Meyerk rd Unit Manager Environmental Programs Attachment cc: George Vonesh Don Warembourg Steve Miller l
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WPDES DISCRARGE PERMIT NONCOMPLIANCE REPORTING FORM Date: 1/25/93 Applicable Permit No.: Co-0001121 Discharge No.: 001s
- 2. GENERAL
! Company: Public Service Company of Colorado Mailing Address: P.O. Box 840, Denver, CO 80201 Plant Name: Ft. St. Vrain Station Plant Location: Near Platteville, Colorado County: Weld County II. NONCOMPLIANCE REPORT A. Description and Cause of Noncompliance: At 5:50AM Jan. 20, 1993, t net TSS at 001B (Goosequill Ditch) was 153mg/1. Investigations indicate that the source of high TSS was poor sampling technique during low flow conditions. (only 2-3 inches of water was present '
in the ditch at the time.) At ll:00AM, the net TSS was measured at 6mg/1.
B. Noncompliance Period:
Started: 5:50 A.M. P.M. 1/20/93 Date Ended: 11:00 A.M. P.M. 1/20/93 Date C. Action Taken to Reduce, Eliminate, Prevent.
Operators and all personnel responsible for sampling will be traine in proper sampling technique during l'ow flow conditions.
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D. Person Initiating Report: Louise C. Meverkord Signature: j E. Water Quality Control Division Notification Requirements: l Telephone (24 hrs.): 1/2 5/93 Date Ms . Anne Ih l e n f el dhytified Written (5 days): 1/26/93 Date Ms . Anne Ihlenfeldt 4
SUBMIT REPORT TO: l Ms. Anne Ihlenfeldt Regional Administrator Colorado Department of Health U.S. EPA Water Quality Control Division One Denver Place, Suite 500 Monitoring & Enforcement Section 999 18th Street SWM-C 4300 Cherry Creek Drive South Denver, Colorado 80202-2405 Denver, Colorado 80222-1530 Attn: Enforcement - Permit Program
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O Public Service' P.O. B.x St.0 Denver,CO B02010S40 i
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May 19, 1992-Ms. Anne Ihlenfeldt ,
Water Quality Control Division.
l Monitoring & Enforcement Section -
Colorado Department of Health 4210 East lith Avenue ;
Denver, CO 80220 RE: Fort St. Vrain lion-Compliance Report l
Dear Anne:
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! Attached please find a non-compliance report for the Public Service Company of - >
l Colorado Fort St. Vrain Station. The.non-compliance is'in, regard to the iron >
exceadance reported to you on May 13, 1992. ,
l Please feel free to contact me at 294-2810 with any questions in'this regard.
Sincerely, i
%J . (wiL Peter J. Cohlmia 1
Unit Manager, Environmental Programs ]
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- PJC
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Attachment cc: U.S. EPA George Vonesh liuclear Licensing
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NPDES DISCHARGE PERMIT NONCOMPLIANCE REPORTING FORM Date: 5/14/92 Applicable Permit No.: CO-0001121 Discharge No.: 01SB I. GENERAL ,
A. Company: Public Service Company of Colorado Mailing Address: 16805 19) Veld County Road Plant Name: Fort St. Vra'in Station Plant Location: Platteville, CO County: Veld II. NONCOMPLIANCE REPORT A. Description and Cause of Noncompliance:
One iron sample out of four on May 5-6, 1992, was out of compliance. Two analyses were performed on the 8:30 a.m. sample (5/6). Data revealed 0.98 mg/l iron but a duplicate analysis did not fall within our acceptable standard deviation. The analysis was therefore thrown out.
11:55 p.m. 5/5/92 0.526 mg/l iron 11:10 a.m. 5/6/92 0.456 mg/l iro 8:30 a.m. 5/6/92 1.38 mg/l iron 5:15 p.m. 5/6/92 0.506 mg/l iro
- 3. Noncompliance Period:
Started: 8:30 A.M. P.M. 5/6/92 Date Ended: 11:10 A.M. P.M. 5/6/92 Date C. Action Taken to Reduce, Eliminate, Prevent:
The iron sample integrity is questionable. However, data reveal the iron to have been out of compliance for a very short time. The Fort St. Vrain system is being monitored closely and analytical procedures are being reviewed.
D. Person Initiating Report: Peter J. Cohleia - Unit Manager. Environmental Programs Signature: . N o.
1 E. Water Quality Control Division Notification Requirements:
Telephone (24 hrs.): 5/13/92 Date Ms. Anne Ihlenfeldt - CWocn Notified Written (5 days): 5/18/92 Date Ms. Anne Ihlenfeldt - C W C C <>
SUBMIT REPORT TO:
- Ms. Anne Ihlenfeldt Regional Administrator Colorado Department of Health U.S. Environmental Protection Agency Water Quality Control Division One Denver Place, Suite 500 Monit3 ring & Enforcament Section 999 ISth Street BWM-C 4210 East lith Avenue Denver, Colorado - 80202-2405 Denver, L11erado 80220 Attn: Enforcement - Permit Program I
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Anaconda Tower Suite 1200 P.O. Box 8/.0 Denver, CO 80201- 0840 -
May 20, 1991.
Ms. Anne Ihlenfeldt .
i Public Health Engineer Pemits & Enf orcement Section Water Quality Control Division j Colorado Department of Health -
4210 East lith Avenue Denver, CO 80220 RE: CDPS Permit No. CO-0001121, Fort St. Vrain Station
.- )
1
Dear Anne:
As 6,
we discussed by telephone on May' 2,1991, and in our meeting on May' 1991,~ the Fort St. Vrain (TSV) Station experienced a pH concern which began May 1, 19M, and ended on May 7,1991. The pH at dis-charge point 01SB averaged just over 9.0 s.u. during the above' period and is believed to. be a result of high pH in the St. Vrain Creek. The FSV Station uses inlet water from the St. Vrain Creek and the pH in the i inlet water was found to be 8.5 ~ to 8.8 s.u. This inlet water is utilized- !
to fulfill a Nuclear Regulatory Commission (NRC) requirement for ' dilution water at the site. Two water storage ponds that hold approximately 26 million gallons of water contribute the majority of. -the NRC required discharge water from the site (1,200 to 1,500 ~ gpm). The' pH in these
, ponds was found to be 9.5 to 9.8 s.u. There is no process water direct-ed to these ponds and some biological activity was f ound. It is believed that the concentration of high pH inlet water.from the St. Vrain Creek and the biological activity in the storage ponds led to the pH exceedances
- at 0153. ;
I In order to lover the pH in the water storage ponds, a temporary acid feed system was installed. It was determined that this' system was not j
practical nor safe in that a considerable amount of acid would have been required to lower the pH in 26 million gallons of water. Therefore. the-high pH water brought into the Station from the St. Vrain Creek was discontinued and water was brought into the plant via the South Platte River. The average pH in the South Platte River was 7.7 s.u. The South Platte River water strategy was successful in lowering the pH in the water storage ponds and at discharge point 01SB.
It was discovered during our research of this situation, that the dis-charge f rom the ' f arm pond (discharge point 01SA) had' a pH .over 10.0 s.u.
The farm pond receives water discharged from the plant (01SB) and from the Jay Thomas Ditch. It is believed that agricultural and livestock runoff can also contribute to.this pond. Our CDPS permit requires PSC l
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l to monitor total residual chlorine and temperature at the discharge from I this pond to the South Platte River. Monitoring for pH is not required at l this discharge point and therefore a history of the pH in the pond is not known. However, there are no signs of any aquatic life concerns. The pond may be experiencing a turnover common this time of year which can affect the pH. The pH in the f arm pond is dropping due to the addition of South Platte River water. l l
I The pH situation at the YSV Station discharge point 015B appears to be resolved. PSC believes that the pH exceedance was due to the high pH of the inlet water f rom the St. Vrain Creek. Plant processes are not believed to have contributed to the pH problem.
1 PSC personnel worked diligently to correct the pH concern and are com- I mitted to compliance with our CDPS wastewater discharge permit. This letter will serve as the written notification of this pH situation. Feel free to contact me at 294-3715 with any questions in this regard.
Sincerely, l
l Peter J. Cohlmia l
Supervisor, Environmental Programs l PJC:tc
! cc: Chuck Puller - FSV Station Manager U.S. EPA ,
Ken Weisser George Vonesh
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- Public Service"
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Public Service -
c.- , nr.<c.i.r.
Anaconda Tower. Suite 1200 P.O. Bex 840 Denver, CO 80201 0840 i
1 March 5, 1991 l
l Ms. Anne Ihlenfeldt l Water Qaality Control Division .)
Monitoring & Enforcement Section. )
Colorado Department of F.ealth I l
4210 East lith Avenue Denver, CO B0220 (
l I
P.E: Fort St. Vrain Non-Compliance Report i l
Dear Anne:
Attached please find a non-compliance report for the Public . Service {
Company of Colorado' Fort St. Vrain Station. The non-compliance is in' -l' regard to the iron exceedance reported to you on March 1, 1991.
Please regard.
feel free to contact me at 294-3715 with : any questions in this .,
Sincerely, J. ds c i,
Peter J. Cohlmia Supervisor, Environmental Programs l PJC:to Attachment l cc: U.S. EPA F '
George Vonesh
- l-i !
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NPDES DISCHARGP. PERM 1T NOHCOMPLIANc3 RZaw;uv3 FORM Date: 3-1-91 l
' Applicable Permit No.: CO-0001121 l Discharge No.: 01SB f J I. GENERAL A. Conpany: PUBLIC SERVICE COMPANY OF COLORADO Mailing Address: MB05 Weld County Road 19i l Plant Nama: Fort St. Vrain County: Weld Plant Location: Platteville, CO 80051 I II. NONCOMPLIANCE REPORT l
A. Description and Cause of Noncc:::pliance:
Discharge flow path 01SB had not been used for approximately two months.
Iron value of 1.49 ryll believed to be a result of high polida and sediments in discha' ge line washed out when flow was resumed in 01SB.
B. Soncompliance Period:
P.M. 2-27-91 Date Started: 9:45 A.M.
12:00 P.M. 2-27-91 Date Ended: A.M.
C. Action Taken to Reduce, Eliminate, Prevent:
All wastewater sarples analyzed for iron from 2-24-91 through The2-28-91, monthly except the 9:45 a.m. 2-27-91 sa=ple, were in co=pliance.
average iron limitation was not exceeded.
D, Person Initiating Report: Peter 3. Cohlmia, Supv., Environmental Procrams Signature: M x[ Nnd _
l Signature of Plant Managers //d E,. Water Quality Control Division Notification Requirements:
i 2:35 p.m. Date 3-1-91 Anne Ihlenfeldt Notified
! Telephone (24 hrs.):
Date 3-5-91 Anne Ihlenfeldt - CWQCD Vritten (5 days):
Copy: Pe* Cohln.ia, Ansconda Towar, Suite 1200/ Plant File SUBMIT RENRT TO:
f Regional Administrator i
Ms. Anne Ihlenfeldt U.S. Environmental Protection Agency l
Colorado Department of Health one Denver Place, suite 500 Water Qual.ity Control Division Monitoring & Enforcement Section 999 18th Street BWM-C Denver, Colorado 60202-2405 4210 East lith Avenue Attn: Enforcement - Perrtit Program Denver, Colorado 80220 l
i J
O Public Service * :L%
P.O. Box 840 Danvw,CO 90201 0840 May 22, 1990 Ms. Sandy Marek Water Qaality Control Division Monitoring and Enforcement Section Colorado Department of Health 4210 East lith Avenue.
Denver, CO 80220 RE: Fort St. Vrain Ncn-Co:::pliance Report
Dear Sandy:
Attached please find a non-compliance repcrt for the Public Service Coupany of Colorado Fort St. Vrain Station. The non-compliance is in regard to the iron and copper exceedances reported to you on May 21, 1990.
Please feel free to contact me at 294-3715 with any questions in this I regard. I Sincerely,
. etv j Peter J. Cohlmia Air & Water Progra:ns Coordinator PJC:te Attachment '
cc: U. S. EPA 1
1
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DISCHARGE ~ PERMIT NONCOMPLIANCE REPORTING FORM i
Date: 5/22/90 Applicable Pernit No. Co-0001121 l Discharge No.
~
01SB l I. GENERAL A. Comeany: PU3LIC SERVICE COMPANY OF COLORADO Mailing R aress: _.16805 WCR 194 Plant Name: Fort St. Vrain Plant Location: _ P_la_tteville. CO 80051 Ccunty Weld II. Noncompliance Report A. Description and Cause of Noncompliance:
Treatment of hydrazine using peroxide and chlorine in the system 41 cooling tower i basin resulted in the corrosion of metals from pipes and the condenser. Copper was found to be 0.358 mg/l at 10:00 a.m. on May 18, 1990, and iron at 1.28 mg/l at 10:00 a.m. on May 18, 1990. i i
- 3. Nonconpliance Period:
Started: 10:00 A.M. P.M. 5/18 DATE Inded: A.M. 3:40 P.M. 5/18 DATs C. Action Taken to Reduce, Eliminate, Prevent:
Shut down cooling tower system 41 release to discharge at 3: 40 p.m. on 5/18/90.
Metals concentration vill be reduced prior to discharging from this system.
Iron was found to be back in compliance at 1:30 p.m. (0.79 mg/1). Copper was
- back in compliance at 4
- 45 p.m. (0.018 mg/1) on May 18,1990.
D. Person Init4 ing Report Peter J_._ Cohlmia . Air end Water Proernes Coordinator Signature: ' b l _d Co4 N s. , ,
Signature of Plant Manager: 4 Gr,/ L / A Person Authorized to File Repdrt -
With Regulatory Agencies: Peter Cohlmia/ George Venesh/ Bob Pearson E. Water Quality Control Division Notification Requirements:
I Telephone (24 hrs. ) _ 5/21/90 Date Sands Marek Person Notified Written (5 days) . 5/23/90 Date Sandy Marek - WOCD Copy: Pete Cohlmia, 39th A.E.C./ Plant file SU3MIT REPORT TO:
Ms Sandy Marek Regicnal Adninistrator
! Colorado Department of Health U.S. EnvircrAental Protection Agency Water Quality control Division One Denver Place, suite 500 Monitoring & Enforcement Section 999 18th Street SWM-C 4210 East lith Avenue Denver, Colorado 80202-2405 Danver, Colorado 80220 Attn: Enforcement - Permit Program l
I O Puaic Service- -o -.
Companyof Colorado l
1800 West Sheri Lane Urt'aton. CO 80120 August 31, 1989 Ms. Sandy Marek '
)
Water Quality Control Division -i Monitoring and Enforce.w.nr Section .
i Colorado De*p nt of Health '
4210 East alth Avenue ,
i Denver, CO 80220 )
RE: Fort St. Vrain Station Non-Compliance Report
Dear Sandy:
Attached please find the follow-up non-compliance report regarding j iren for -he Public Service Co:=6ny of Colorado Fort St. Vrain' Station.
7ne iron level in the 01S3 discharge came back into cenpliance on l August 19, 1989, and re: rain in compliance to date. Actual discharge s to the South Platte River from the farm pond outfall did not exceed
~
the 01SE iren limitation during this non-ccepliance period.
'" The increased levels of iron in the discharge will not occur again as .!
it was decided by PSC to shut down the operation of the Fort St. Vrain l Station on August 29, 1989. 1 Please feel free to contact me at 329-1951 with any questions in this regard.
Sincerely, 3yk J . W ,
?cter J. Cchimia-Enviremental Coordinator Attacherent cc: U. S. EPA 1
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l Date: 8/25/89 Applicable Permit No. C0-0001121 1
Discharge No. 015B l I. GENERAL '--
l ,.
A. Company: PUBLIC SERVICE COMPANY OF COLORADO l Mailing Address: 16805 Weld County _ Road id 1/? ,
Plant Name: Fort Saint Vrain _ _ . _ _
Plant Location: - Platteville. CO 80651 County Weld l
II. Noncompliance Reporr l i
A. Description and Cause of Noncompliance:
Elevated iron concentration of cooling tower intake water and the concentrating l effect resulting from evaporation of the cooling water.
l B. Noncompliance Period:
)
Started: __ _ A.M. 7:40 P . M. 8/04 /89 DATE l
. Ended: 6:00 A.M. _
P . M. 8/19/89 DATE C. Action Taken to Reduce, Eliminate, Prevent: l See attached report.
.s~
l 'D. eport Vic Lucero___
Person SLqnature:Initiay)5.n 1 . /. J u f s t) ~ , _
Signature of Plarft Manager: /&;(%ffk Person Authorized to File Report With Regulatory Agencies: Peter Cohlmia/ George Vonesh/ Bob Pearson
! E. Water Quality Control Division Notification Requirements:
cw c>c o Telephone (24 hrs.) shc/79 Date %A md - Person Notified
~
Written (5 days) _ _ _
Date .
Copy: Pete Cohlmia, 39th A.E.C./ Plant file SUBMIT REPORT TO: l Ms Sandy Marek Regional Administrator I
Colorado Department of Health U.S. Environmental Protection Agency
- Water Quality Control Division One Denver Place, Suite 500 l Monitoring & Enforcement Section 999 18th Street 8WM-C j 4210 East lith Avenue Denver, Colorado 80202-2405 !
Denver, Colorado 80220 Attn: Enforcement - Permit Program l
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August 23, 1989 This is a final report addressing the-high iron concentration (greater than 1.0 ppm), found in the Goosequill ditch (01SB). Daily sampling and analysis for iron since the initial finding on 8/4/89 of 1.05 ppm has been performed.
On 8/19/89 at 6:00 AM, the violation condition was terminated when analysis showed the iron concentration to be at 0.97 ppm.
Additional analysis since the termination date indicates the iron concentra-tion to be trending downward. On 8/21/89 a level of 0.55 was found on the Goosequill sample. As shown in the attached table of results, concentrations in the final discharge point (Farm Pond), and intake water, show levels not l exceeding the NPDES limits.
l Continued monitoring at increased intervals of the intake water and Goose-quill will be performed to closely monitor the situation, i
August 29, 1989 The Fert St. Vrain Station has been shut down as of today. Therefore, the
% ~ high iren situation at the Station will not occur again. It is not believed l
that iron greater than the 1.O ng/l 15 nit ever reached the South Platte River.
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IRON VALUES .
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SAMPLE DATE TIME PPM SAMPLED BY SAMPLE POINT 07/31/89 0530 0.38 TENDER GOOSEQUILL 07/31/00 1210 0.25 TENDER GOOSEQUILL i 07/31/89 1820 0.30 TENDER GOOSEQUILL
- 08/01/89 0500 0.39 TENDER GOOSEQUILL 08/01/89 1230 0.33 TENDER GOOSEQUILL 4
Ou/01/89 1840 0.31 TENDER GOOSEQUILL 08/02/89 0235 0.27 TENDER GOOSEQUILL 08/02/89 ',' 1400 0.24 TENDER GOOSEQUILL
- 08/02/89 '
1925 0.39 TENDER GOOSEQUILL 08/05/80 0530 0.34 TENDER GOOSEQUILL' 08/03/89 1411 0.23 TENDER GOOSEQUILL l 08/03/89 1650 0.22 TENDER GOOSEQUILL
- 08/04/89 0530 0.94 TENDER GOOSEQUILL l 08/01/89 1940 1.05 TENDER GOOSEQUILL 08/05/89 1715 1.04 TENDER GOOSEQUILL
, 08/06/89 1645 1.11 TENDER GOOSEQUILL 08/07/89 0530 0.98 TENDER GOOSEQUILL 08/07/89 0900 1.45 NISHIMOTO GOOSEQUILL '
08/07/89 1445 1.23 TENDER GOOSEQUILL 08/07/89 2015 0.96 TENDER GOOSEQUILL 08/08/89 1830 1.11 TENDER GOOSEQUILL 08/09/89 0530 1.05 TENDER GOOSEQUILL 08/09/89 1500 1.20 TENDER GOOSEQUILL
- 08/09/89 2000 1.34 TENDER GOOSEQUILL
- 08/09/89 1230 1.21 NISHIMOTO GOOSEQUILL
'08/1 /89 0530 1.43 TENOER GOOSEQUILL 08/10/89 l
1030 1.90 TENDER GOOSEQUILL 08/10/89 2050 1.47 TENDER GOOSEQUILL 08/10/89 1345 0.57 NISHIMOTO INTAKE 08/10/89 1350 1.73 NISHIMOTO- GOOSEQUILL 08/11/89 0530 1.49 TENDER GOOSEQUILL 08/11/89 1530 0.59 NISHIMOTO INTAKE 08/11/89 1340 1.So NISHIMOTO GOOSEQUILL 08/12/89 1030 1.04 TENDER GOOSEQUILL
! 08/13/89 1030 1.50 TENDER GOOSEQUILL 08/14/89 0455 1.34 TENDER GOOSEQUILL 08/15/89 0900 0.93- NISHIMOTO INTAKE . l 08/15/89 0900 1.21 NISHIMOTO GOOSEQUILL i 08/15/89 1400 0.32 NISHIMOTO FARM POND 08/16/89 0900 0.26 NISHIMOTO FARM POND 08/16/89 0900 0.82 NISHIMOTO INTAKE 08/16/89 0900 1.00 NISHIMOTO GOOSEQUILL 08/17/89 0630 0.55 NISHIMOTO FARM POND 08/17/89 0630 0.91 NISHIMOTO INTAKE 08/17/89 0630 1.45 NISHIMOTO GOOSEQUILL 08/18/89 1030 0.45 DLUG ~ FARM POND i 08/18/89 1030 0.55 DLUG INTAKE 08/18/89 1030 1.03 DLUG GOOSEQUILL 08/19/89 0600 0.97 TENDER GOOSEQUILL
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f 08/20/89 0600 0.97 TENDER GOOSEQUILL C3/21/89 0630 0.45 NISHIMOTO FARM PONO ;
08/21/89 0630 0.72 NISHIMOTO INTAKE i 08/21/89 0630 0.55 NISHIMOTO .GOOSEQUILL 9
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Ms. Sa%' Ma%
Water Quality Contml Division Monitoring and Enforcemnt Section Colorado Department of Health 4210 East. lith Avenue Denver, CO 80220 PI: Fort St. Vrain Non-Co:::pliance Report
Dear Sandy:
i Attached please fird a ren-carpliance report for the Public Service l Company of Colorado Fort St. Vrain Station. The non-ccepliance ,
is in regard to an iron exceedance situation reported to you on August 15, 1989.
Please feel free to contact rae at 329-1961 with any questions in <
this regard. A final report will be prepared when this situation is resolved.
Sincerely, i
k bbA l Peter J. Cchlida I Lvirernaental Coonlinator
- l Attach: Lent I i
1 cc: U. S. EPA l
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NPDES i
l OISCHARGE PERMIT NONCOMPLIANCE REPORTING FORM {
s #
Date: 8/17/89 Applicable Permit No.~~ co-0001121 Discharge No. Os1B I. GENERAL A. Company: PUBLIC SERVICE COMPANY OF COLORADO l Mailing Address: 16805 Weld County Road Plant Name: Fort Saint Vrain Plant Location: Platteville.-CO 80651 County u,14 II. Noncompliance Report I A. Description and cause of Noncompliance: l Elevated iron concentration of cooline tower intak, unrov i
_ and the concentratine effe#c r..nlvfne **m av=nnem e 4 nn ' _ i of the cooline vnterl l
l B. Noncompliance Period
! Started: k.M. 7:40 p,g, 8/4/890 ATE '
Ended: A.M. P.M. DATE Estimate of Return to Compliance: ,
C. Action Taken to Reduce, Eliminate, Prevent: See Attached
. /
0.PersonInitiatingj;eport/ Mor A. I.ucero Signature: _ /MA #/2ur43 . ,
Signature of Stat 1on Mari(ger: dff.f,,/A
~
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Person Authorized to Fil'e Report With Regulatory Agencies: Pete Cohlmia/Georce Vonesh/ Bob Pearson E. Water Quality Control Division Notification Requirements:
Telephone (24 hrs.) 8/15/99 Date sandy Marek Person Notified Written (5 days) 8/21/89 Date saev Mamk anm Copy: Pete Cohlmia, Bellev1w S.C./ Bob Pearson/ George Vonesh, Room 946 HQB Plant file SUBMIT REPORT TO:
i Ms Sandy Marek Regional Administrator .
Colorado Department of Health- U.S. Environmental Protection Agency Water Quality Control Division One Denver Place --' Suite S00 Monitoring & Enforcement Section 999 18th Street Tum-c.--
4210 East lith Avenue Denver, Colorado 80202-2405 !
Denver, Colorado 80220 Attn: Enforcement - Permit Program ponu am.m.see mm mee e m.
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O PublLc Service-August 18, 1989
)
l l A sample of the Goosequill Ditch (0153) taken on 8-7-89 was analyzed for !
l iron ou 8-10-89 and was found to have an iron concentration of 1.45 ppm, i I
which exceeds the 1.0 ppm limit. !
An investigation was begun innediately to determine'the source of the iron. j Samples of the Goosequ111 Ditch that had been collected and saved from l 7-31-89 to 8-10-89 vere analyzed to identify the time the high iron condition ,
began. The t.est results identified that the iron concentration of the (
- discharge was averaging .3 ppm until 8-4-89, when the iron concentration l
increased to greater than 1.0 ppm with the 7:40 PM sample. ,
I I
I Daily sampling and analysis for iron at the Goosequill Ditch was initiated to trend the iron and determine when the violation condition is terminated.
l The results of all iron analyses are attached.
I In addition, samples have been taken from the cooling tower intake and the !
f ,
Farm Pond effluent to investigate the cause and effect of the violation -
l condition.
The iron concentration of the intake sample has ranged from .57 ppm to
.93 ppm, which explains the high iron concentration tu the Goosequ111 Discharge. Elevated levels are present in the intake water (from St. Vrain l
l Creek and Platte River) probably due to run off caused by the unusually
! rainy weather during this period. Cycling of the cooling water can increase
- concentration of metals such as iron and this is believed to be the problem.
The Farm pond is the final discharge point to the Platte River. Samples of the Farm Pond verify that the iron concentration of the final discharge does not exceed the NPDES limit. Iron in the discharge stream is , settling l out in the Tszu Pond.
l l As requested by the Colorado Department of Health, suspended solids analysis was performed on the intake and Goosequill Ditch. All test results were normal and within NPDES limits.
Iron will be monitored at the intake, Goosequill Ditch, and Farm Pond effluent until the violation condition is terminated. A final report will be submitted at that tine.
e
IRON VALUES i l
SAMPLE DATE TIME PPM SAMPLED BY SAMPLE POINT l 07/31/89 0530 0.38 TENDER GOOSEQUILL 07/31/89 1210 0.25 TENDER GOOSEQUILL 07/31/89 1820 0.30 TENDER GOOSEQUILL 08/01/89 0500 0.39 TENDER GOOSEQUILL l l 08/01/89 1230 0.33 TENDER GOOSEQUILL l 08/01/89 1840 0.31 TENDER GOOSEQUILL 08/02/S9 0235 0.27 TENDER GOOSEQUILL 08/02/89 1400 0.24 TENDER GOOSEQUILL 08/02/89 1925 0.39 TENDER GOOSEQUILL l 08/05/89 0530 0.34 TENDER GOOSEQUILL 08/03/89 1411 0.23 TENDER GOOSEQUILL 08/03/89 1650 0.22 TENDER GOOSEQUILL 08/04/89 . 0530 0.94 TENDER GOOSEQUILL 08/04/89 1940 1.05 TENDER GOOSEQUILL -
08/05/89 1715 1.04 TENDER GOOSEOUILL 08/06/S9 1645 1.11 TENDER GOOSECUILL l 08/07/89 0530 0.98 TENDER GOOSEQUILL l
08/07/89 0900 1.45 NISHIMOTO GOOSEQUILL 08/07/89 1445 1.23 TENDER GOOSEQUILL i
08/07/89 2015 0.96 TENDER GOOSEQUILL 08/08/89 1830 1.11 TENDER GOOSEQUILL 08/09/89 0530 1.05 TENDER GOCSEQUILL 08/09/89 1300 1.20 TENDER GOCSEQUILL 08/09/89 2000 1.34 TENDER GOOSEQUILL 08/09/89 1230 1.21 NISHIMOTO GOOSEQUILL 08/10/89 0530 1,43 TENDER GOOSEQUILL 08/10/89 1030 1.90 TENDER GOOSEQUILL
'08/10/89 2050 1.47 TENDER GOOSEOUILL 08/10/89 1345 0.57 NISHIMOTO INTAKE 08/10/89 1350 1.73 NISHIMOTO GOOSEQUILL '
08/11/89 0530 1.49 TENDER GOOSEQUILL 08/11/89 1330 0.59 NISHIMOTO INTAKE 08/11/89 1340 1.56 NISHIMOTO GOOSEQUILL 08/12/89 1030 1.04 TENDER GOOSEQUILL 08/13/89 1030 1.50 TENDER GOOSEQUILL 08/14/89 0455 1.34 TENDER GOOSEQUILL
, 08/15/89 0900 0.93 NISHIMOTO INTAKE l 08/15/89 0900 1.21 NISHIMOTO GOOSEQUILL l 08/15/89 1400 0.32 NISHIMOTO FARM POND 08/16/89 0900 0.26 NISHIMOTO FARM POND 08/16/89 j 0900 0.82 NISHIMOTO INTAKE l 08/16/89 0900 1.00 NISHIMOTO GOOSEQUILL 08/17/89 0630 0.55 NISHIMOTO FARM POND 08/17/89 0630 0.91 NISHIMOTO INTAKE 08/17/89 0630 1.45 NISHIMOTO GOOSEQUILL
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ST O? CO103A30 COLORADO DEPARTMENT OF HEALTH Dr#cated to protecong and snsprovong rhe health and envorontnent rir the paspic os Colorada 4 300 Cherrv Creek Dr. S. + tahoratory Building
- Denver. Colurado H0H2 1310 l 4210 E.11th Avt:nue .
Phone:0 03)692 2000 l Denver. Colorado 80220 3716 -
i 0 03:691 4700 au, Romer Govesemr PatteoJ A. Nolan, MD. M*
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RATIONALE FOR PUBLIC NOTICE PUBLIC SERVICE COMPANY OF COLORADO - FORT ST. VRAIN STATION .
PERMIT NUMBER - CO-0001121 Enclosed is a copy of the amended pages of the draft permit for your facility which has just been sent to public notice. You have thirty (30) days from the time of public notice to '
submit comments to the Division for consideration.
Because of the many changes that your permit may undergo before issuance, all changes and corrections will be made after the public notice period. If you have any questions, please do not hesitate to contact the Permits and Enforcement Section at 692-3590.
Thank you for your cooperation.
Sincerely, M
Robert J. Shukle, Chief Permits and Enforcement WATER QUALITY CONTROL DIVISION
! cc: District Engineer, Field Support Section, WQCD l Council of Governments l Local Health Depanment l
Environmental Protection Agency Permit Drafter, Permits and Enforcement Section, WQCD Mined Land Reclamation Division, (Coal Permits Only)
Daries C. (Chuck) Lile, Director, Colorado Water Conservation Board Hal Simpson,-State Engineer, Colo. Division of Water Resources Dennis R. Bicknell, Director, OGCC, (Oil and Gas only)
Enclosure Received Environmen ISe Date [ /O b
/ f rnisordim erens ted
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l COLORADO DISCHARGE PERMIT SYSTEM (CDPS)
AMENDMENT NO.1 - RA TIONALE l PUBLIC SERVICE COMPANY OF COLORADO FORTST. VRAIN STATION - '
PERMITNO. C&0001121, WELD COUNTY L TYPE OF PERMIT: Industrial- Amendment IL FACILITY INFORMATION:
A. Facddy Type Category 8 Subcategory 4 - Power Plants: Process Waterfrom 1.0 to and Fee Category: 4.999 MGD - Currentfee $4568 per yearfor the process related permit; and Category 24, Subcategory 2 - Individualindustrial Storm Water Permits: Ten Acres or More - Currentfee $300/yearper CRS 25-8-502.
Totalfee = $4868/ year.
B. SIC No.: 4911 (Electric Sersices) ;
C. Legal
Contact:
Exuise Meyerkord, Unit Manager, Ensironmental Programs,
\ Public Service Company of Colorado ,
P.O. Bn MO 1 (122517th Street, Suite 2000)
Denver, CO 80201 l (303)+ 294-2814 l
l D. Facility Contacts: Louise Meyerkord, Unit Manager, Environmental Progranu (See abovefor address and phone number)
Don Warembourg, Decommissioning Program Director PSC Fort St. Vrain Station (303)+ 620-1009 E. Facility Location: lite Public Service Company Fort Saint Vrain Station is located
- approximately 3.5 miles nonhwest of Plattesille, Colorado in Section 3, T3N, R67W; and Sections 34 and 35 T4N, R67W: 6th Principal Meridian, as shown infigure 1 and 2 of the permit.
F. Discharge Points: See reneuel rationalefor thisfacilityfor description of all the outfalls (discharge points 001A, 001B, 002, 003, 004, 005, 006, 007, and monitoring point 008) at thisfacility.
Outfall 006 - the internal dischargefrom the turbine building drain at the end of the 24-inch pipe (unless otherwise noted), which is prior to mixing with other waters, as shown infigure 4 p G. Facility Flows: See previous renewal rationale.
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COLORADO DEPARIMENTOFHEAL7H, Water Quality ControlDivision l' Rationale, Amendment No.1 - Page 2 Permit No. CO-0001121 \
1 111. RECEIVING STREAAf:
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Outfal! 006 is an internal discharge point uhich does not discharge directly to any surface waters. Outfall 006 ,
eventually contributes to discharges at 001A,001B, and/or 002. Outfalls 001A and 003 go to the South Plane l l River (segment 1 Afiddle South Platte River subbasin): 001B is located in the Goosequill Ditch Stub, which then \
goes to Goosequill Ditch, which is tributary to the South Plane River (Goosequill Ditch is in segment 3. Afiddle !
South Platte River subbasin); and outfalls 002, 004, and 005 go to St. Vrain Creek (segment 3, St. Vrain Creek l subbasin). See the previous renewal rationale (February 8,1993)forfurther details.
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l IV. PURPOSE OF AAfENDMENT:
l l This amendment is to modify the limitsfor pHfor discharge point 006. Previously, these pH limits were indicated as 6.0 to 9.0 s.u. (standard units): now the pH limit range is being changed to 6.0 to 10.5 s.u.
l V. DISCUSSION OF AMENDMENT:
i
. In a letter dated March 15, 1993, Public Service Company of Colorado (PSC) requested that the nuuimum pH '
limitationfor outfall 006 in this permit be increased to 10.5 s.u. This was because, with the existing pH limitsfor outfall 006 (6.0 to 9.0 s.u.), the upper pH limitation would be unattainable due to the necessityfor higher pH conditions maintained in the condensate and boiler systemsfor corrosion protection purposes. The pH of condensate must be maintamed at a level greater than or equal to 9.2 s.u., and the boiler unter pH is maintained at 11.4 to 11.8 s.u. Since these two wastestreams make up the efuentfrom the turbine building sump, it will be impossible to meet the upper pH limitation of 9.0 s.u. under existing conditions. The pH of this efuent is generally in the range of10.0 to 10.5 s.u. 7herefore, PSC requested that the maximum pH limitation for outfall l 006 be revised to 10.5 s.u.
1 Since outfall 006 is an internal discharge point, there will be no adverse impact to surface untersfrom this j
modification. Subsequent downstream efuent monitoring and limitations at outfalls 001A, 001B, and 002 will ensure that efuents to surface unters of the State will be maintained at a pH between 6.5 and 9.0 s.u. Previous pH monitoring data at these outfalls has shown compliance with the pH permit limitations: 7.62 - 9.0 s.u. (outfall 001B during 1992). and 7.8 - 8. 7 s.u. (outfall 002from 1 1-1991 through 1992).
Previously before the recently reissued renewalpermitfor thisfacility (uhich will be efective on April 1,1993),
there were no pH limits or monitoring requirementsfor outfall 006.
t 7hus, based upon these previously described considerations, the Division has determined that the pH limitation rangefor outfall 006 may be changed to 6.0 to 10.5 s.u. Page lg of the permit has been accordingly revised in this amendmentfor the pH limitsfor outfall 006.
l Since this amendment includes a significant change, public notice requirements are applicable.
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\ Don Holmer l March 31,1993 l
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PART I l g Pa5e 1g of 19 )
Permit No. CO 0001121 )
A. TERMS AND CONDITIONS
- 5. Effluent Limitations - Discharge Point 006 Beginning immediately and lasting through January 31, 1998, the permittee is authorized to discharge from outfall 006. Outfall 006 is the internal i discharge from the turbine building drain at the end of the 24-inch pipe, which is prior to mixing with other waters, as shown in figure 4 In accordance with the Water Quality Control Commission Regulations for l Effluent' Limitations, Section 10.1.3, and. State Discharge Permit System-Regulations, Section 6.9.2, 5 C.C.R. 1002-2, the permitted discharge shall not contain effluent parameter concentrations which exceed the following limitations, discharge more than the mass pollutant loadings.
specified below, or exceed the specified flow limitation.
1 t
Effluent Parameter 'Discharee Limitations ,
i 30-Day Ave a/ 7-Day Ave h/ Daily Max g/
Flow, MGD Report N/A' Report l Total Suspended Solids, ag/l 30 :N/A 100r l Oil and crease,.mg/l 1/ 15 N/A 20 1
l l pH - standard units shall remain between 6 0 and 10.5 cf. :
i There shall be no discharge of floating solids. )
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The above effluent limitations for Total Suspended Solids and Oil and i crease do not apply when there is a discharge of storm water runoff from either of the smaller pipes located adjacent to the end of the 24.-
inch pipe.
See Part I.C. for Footnotes.
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i Amended Effective l i
l Code: 1 - 2g Date: 1-84, revised 12-87, revised 12-88
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.,r, Public Service Public Service' c- - c-r-Governmental and Environrnental Affairs P. o. Box 840 Denver, CO 80201 0840 j June 4, 1993
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l Mr. Robert J. Shukle, Chief Permits and Enforcement Section Water Quality Control Division Colorado Department of Health 4300 Cherry Creek Drive South Denver, Colorado 80222-1530 j RE: Public Service Company of Colorado Fort. St. Vrain Station !
Draft Amendment No. 1 CDPS No. CO-0001121
Dear Bob:
On May 7, 1993, the Public Service Company of Colorado (PSC) l Fort St. Vrain Station draft amendment No. 1 to ' the facility :
wastewater discharge permit was issued for public notice by the l Colorado Water Quality Control Division (CWQCD). The attached l comments on the draft amendment are hereby submitted within the !
June 6, 1993 public comment deadline. ;
1 PSC appreciates the initiation of this draft amendment to more j accurately represent the effluent at outfall 006, the internal l discharge from the turbine building drain at the end of the 24-inch l pipe. In a letter dated March 15, 1993, PSC requestod that the maximum pH limitation for outfall 006 be increased to 10.5 s u. As that letter indicated, an upper pH limitation of 9.0 s.u. was unattainable due to the necessity for higher pH conditions maintained in the condensate and boiler systems for corrosion protection purposes. The pH of condensate must be maintained at a level greater that or equal to 9.2 s.u. and the boiler water pH is maintained at 11.4 to 11.8 s.u. Since these two wastestreams made up the effluent from the turbine building sump, PSC requested a higher pH limitation at outfall 006. That request resulted in the draft amendment upon which PSC is commenting today.
Due to improvements in the FSV condensate system since March 15, 1993, PSC is no longer discharging other than nominal amounts of condensate into the turbine building sump. Therefore, the only wastestream generally contributing to the turbine building sump and subsequently discharged via outfall 006 is boiler blowdown with a pH of 11.4'to 11.8 s.u. Consequently, PSC further requests that the upper pH limitation at outfall 006 either be removed or raised to at least 11.5 s.u. to avoid issues of non-compliance at this internal discharge point. Due to downstream pH monitoring and limitation of this wastestream after combination with other streams prior to discharge into the South Platte River or the St. Vrain Creek, the CWQCD can be assured that PSC is protective of receiving
e'
- stream quality despite the higher internal pH limitation.
PSC wishes to express its appreciation to Mr. Don Holmer, who cooperated fully with the PSC request for development of this draft amendment.
If you have questions regarding these comments, please feel
' free to contact me at 294-2814.
. Sin erely, D
ouise C. Meyerkord
! Unit Manager Environmental Programs l Attachment cc: George Vonesh Don Warembourg Terry Staley Dave Fetterolf Jesse Brungardt Mike Holmes Mike Niehoff l Dael Clarkson Steve Miller l
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, ,e June 4, 1993 PSC COMMENTS REGARDING FORT ST. VRAIN DRAFT AMENDMENT NUMBER 1 RATIONALE, AMENDMENT NO. 1 Page 2,Section IV. PURPOSE OF AMENDMENT:
Th'e second sentence of this paragraph should be revised to read: "Previously, these pH limits were indicated as 6.0 to 9.0 s.u. (standard units); now the pH limit range is being changed to 6.0 to 11.8 s.u."
Page 2, First paragraph of Section V. DISCUSSION OF AMENDMENT:
Please add the following at the end of the first paragraph:
"However, in a letter dated June 4, 1993, PSC indicated that improvements in the FSV condensate system since March 15, 1993 have resulted in PSC no longer discharging other than nominal amounts of condensate into the turbine building sump.
Therefore, the only wastestream generally contributing to the turbine building sump and subsequently discharged via outfall 006 is boiler blowdown with a pH of 11.4 to 11.8 s.u.
Consequently, PSC requested that the upper pH limitation at outfall 006 either be removed or raised to at least 11.5 s.u.
to avoid issues of non-compliance at this internal discharge point."
Page 2, Fourth paragraph of Section V. DISCUSSION OF AMENDMENT:
The first sentence should be revised to read: " ...pH limitation range for outfall 006 may be changed to 6.0 to 11.8 s.u."
PERMIT Page 19, Third paragraph of Section A.5. Effluent Limitations -
Discharge Point 006 The pH limitation line should be revised to read: "pH -
standard units shall remain between 6.0 and 11.8"
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