ML20117D876

NPDES Noncompliance Notification:Between 960416 & 24,30-day Average & 7-day Average for BOD5 Results for Samples for Outfall 007 Exceeded.Cause of Increased BOD5 Results Unknown.Util Plans to Use Increased Aeration

ML20117D876
Person / Time
Site:	Fort Saint Vrain
Issue date:	05/02/1996
From:	Lindt E PUBLIC SERVICE CO. OF COLORADO
To:	Sullivan K COLORADO, STATE OF
Shared Package
ML20117D866	List: ML20117D864 ML20117D876
References
NUDOCS 9605150070
Download: ML20117D876 (2)

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Denver, CO 80201 0840 May 2,1996 Ms. Kathleen Sullivan Industrial Enforcement Engineer Permits and Enforcement Section Water Quality Control Division Colorado Department of Health 4300 Cherry Creek Drive South Denver, CO 80222-1530 RE:

Public Service Company of Colorado - Fort St. Vrain CDPS Permit Number CO-0001121 Decr Kathleen:

Attached please find the noncompliance report for Public Service Company of Colorado Fort St. Vrain's outfall 007. The noncompliance report details the discharges from the Sewage Treatment System for April 1996 with BODS concentrations in excess of the permitted 30-day average and 7-day average.

If you have any questions concerning this report, please contact me at 294-2440.

Sincerely, Eldon Lindt, Sr. Environmental Analyst Attachment cc:

U.S. EPA Region Vill Alan Albrandt - PSC Mark Fox - PSC Marty Block - FSV Ted Borst - FSV Sam Chestnut - FSV Jesse Brungardt - FSV Dave Fetterolf - FSV 9605150070 960507 PDR ADOCK 05000267 s

PDR

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NPDES DISCHARGE PERMIT NONCOMPLIANCE REPORTING FORM Date: 05/02/96 Applicable Permit No.: CO-0001121 Discharge No.: 007 I.

GENERAL Company: Public Setvice Comnany of Colorado Mailing Address: P.O. Box 840 Denver. CO 80201 Plant Name: Fort St. Vrain Station Plant location: Near Platteville. Colorado County: Weld II. NONCOMPLIANCE REPORT A. Description and Cause of Noncompliance: The 30-day average and 7-day average for BOD results for 3

April 1996 samples for outfall 007 exceeded the permit limits of 30 mg/l and 45 mg/1, respectively. Sample dates for April 1996 were 4/2, 4/9, 4/16, 4/23 and 4/24. Sample results of 39.4 mg/l and 45 mg/l for 4/2/% and 4/9/96 samples were disregarded due to questions with the validity of the test results. Test results for duplicate samples on 4/86/96 were 48 mg/l and 60 mg/1. The test result for thu 4/23/96 sample before chlorination treatment was 38 mg/l. the sample result for a 4/24/% sample following chlorination was <5 mg/l. The average BOD result for the 4/16/96,4/23/96, and 4/24/96 samples was 37.8 mg/1. 'he 7-day average for the 4/16/% and 3

4/23/96 samples was 48.7 mg/l.

B. Noncompliance Period:

Started:

0700 A.M.

P. M.

04/16/ %

Date Ended:

0700 A.M.

P. M.

04/24/ %

Date C. Action Taken to Reduce, Eliminate, Prevent: The cause of the increased BOD results ir unknown.

3 PSC's Applied Sciences is reviewing the BOD procedure to determine possible problems with the axlyses of the 3

4/2/96 and 4/9/96 samples. FSV used chlorination on 04/23/96 to lower the BOD concentration to within permit 3

limits. The chlorine treatment was determined successful due to the test results for the 4/24/96 rample. FSV plans to use increased aeration to help prevent future noncompliance with the BOD permit limits.

3 D. Person Initiating Written Report: Eldon Lindt Signature:

L M

E. Water Quality Control Division Notification Requirements:

Telephone (24 hrs.):

05/01/96 Date Ms. Kathleen Sullivan Notified 10:15 a m.

Written (5 days):

05/02/96 Date Notified SUllMIT REPORT TO:

Ms. Kathleen Sullivan Reg anal Administrator 8

Colorado Department of Public IIcalth and Environment U fd. EPA Water Quality Control Division One Denver Place, Suite 500 Monitoring & Enforcement Swtion 99918th Street 8WM-C 4300 Cherry Creek Drive South Denver, CO 80202-2405 Demer, CO N02221530 Attn.: Enforcement - Permit Program in the event of non-compliance for the FSV Statim, a verl'al report must be made to the Nuclear Regulatory Commis6m by the FSV shift supervisor (620-1090) within four hours after verhally notifying the Water Quality Control Di$ ism.

Verbal n. tifwati, n to FSV Control Room on 65/02/96 at 1000 a.m.