ML20198B809

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Submits Listed Info as follow-up to Recent Telcon Re Bradshaw Reservoir NPDES Permit PA 0052221.Historical Do Grab Sample Data for Ebpc Discharge,Encl
ML20198B809
Person / Time
Site: Limerick  Constellation icon.png
Issue date: 12/09/1998
From: Matty R
PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
To: Newbold J
PENNSYLVANIA, COMMONWEALTH OF
References
NUDOCS 9812210133
Download: ML20198B809 (11)
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PECO ENERGY esco ene,ov comn.ev Fbwer Generation Group 2600 Monroe Boulevard Norristown. PA 19403 610 676 8100 December 9,1998 Mr. James Newbold l

Chief, Permits Section Department of Environmental Protection Water Management Program Lee Park, Suite 6010 1

555 North Lane Conshohocken, PA 19428

Dear Mr. Newbold:

I

Subject:

Bradshaw Reservoir NPDES Permit No. PA 0052221 This letter is being sent as a follow up to our recent telephone conversation j conceming the subject permit. The following issues are being raised regarding  !

the final permit. i

)

1. Dissolved Oxygen (DO): In comments submitted concerning the draft  !

permit, historical data was included showing DO levels at the outfall. The l data indicated that DO at the outfall exceeded a level of 6 mg/l 99.77% of the l time. The lowest DO level experienced was 5.2 mg/l. Historical monitoring data clearly indicates that the discharge has been in 100% compliance with DO limits. As stated in previous comments, turbulence created by the discharge diffuser results in air saturated water conditions at the outfall. In addition, oxygen (03) is added to the water via the disinfection system from ,

May through Septamber Thersfore DO levels at the discharge will always I be above the minimum water quality requirements. PECO Energy is requesting that the current monitoring requirement for DO be deleted and that DO samples only be required when obtaining samples for fecal coliform j  ;

(i.e.,5 times per month, May through September).

2. pH: Similar to DO, pH data was taken at the outfall as part of the post-diversion aquatic biology assessment. The historical pH data was also h L provided in comments filed regarding the draft permit. The data indicates the i discharge has been overwhelmingly compliant with the limits for pH (99.55%

j compliant). Therefore, PECO Energy is also requesting that the current monitoring requirements for pH be deleted. As with DO, samples for pH can be obtained during fecal coliform sampling (i.e.,5 times per month, May through September).

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9812210133 981209 PDR ADOCK 05000352 p PDRL

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3. Fecal Coliform: The monitoring frequency for fecal coliform was changed to

'6nce per week. According to 25 Pa Code Chapter 93.7, Table 3, the maximum fecal coliform level of 200 colonies per 100 milliliters is a geometric average based on five consecutive samples, with each sample collected on l different days. Therefore the measurement frequency should be changed to l 5 times per month and the compliance limit based on a monthly geometric average.

As offered in the past, PECO Energy would appreciate the opportunity to meet with the Department to discuss these issues if needed. In the mean time, if you have any questions or require additional information, please contact me at (610)676-8420.

A copy of this letter (including any attachments or enclosures) is being provided to the U.S. Nuclear Regulatory Commission (USNRC) in accordance with the Limerick Generating Station, Units 1 and 2, Environmental Protection Plan, Section 3.2. The plan stipulates that the USNRC shall receive a copy of any '

proposed changes to the NPDES permit at the same time that the permitting agency is notified.

Sincerely, 4

~MN .

Robert M. Mat , Jr.

Engineer Environmental Affairs Attachment cc: :U.S. Nuclear Regulatory Commission, Document Control Desk (Docket Nos. 50-352 and 50-353) -

H. J. Miller, Administrator, USNRC, Region i USNRC Senior Resident inspector, LGS

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s. 1 HistoricaE Dissolved OxygAN Grab Sample Data for EBPC Discharge 1989-1998 l DATE DO (mg/L) DATE DO (mg/L) DATE l DO (mg/L) )

08/04/1989 -

8.10 09/08/1989 7.70 10/03/1989 14.50 I 08/04/1989 7.40 09/08/1989 10.00 10/04/1989 10.30 l 08/05/1989 7.40 09/09/1989 9.30 10/04/1989 l

08/05/1989 6.80 10.50 (

l 09/10/1989 9.20 10/05/1989 10.20 08/06/1989 7.60 09/10/1989 9.40 10/05/1989 9.70 08/06/1989 7.80 09/11/1989 10.50 10/06/1989 9.70 08/07/1989 6.30 09/11/1989 10.20 10/06/1989 10.40 08/07/1989 8.40 09/12/1989 13.00 10/07/1989 9.70 08/07/1989 6.30 09/12/1989 11.40 10/07/1989 9.90 08/08/1989 8.60 09/12/1989 13.00 10/08/1989 9.20 08/08/1989 8.70 09/13/1989 13.40 10/08/1989 13.30 08/09/1989 8.60 09/13/1989 12.90 10/09/1989 11.10 1 08/09/1989 10.20 09/14/1989 13.80 10/09/1989 10.40 08/10/1989 8.00 09/14/1989 13.40 10/10/1989 10.20 08/10/1989 8.30 09/15/1989 12.30 10/10/1989 12.40 08/11/1989 9.30 09/15/1989 13.70 10/10/1989 10.20 08/11/1989 8.60 09/16/1989 13.30 10/11/1989 10.10 08/12/1989 9.70 09/16/1989 12.00 10/11/1989 11.80 08/12/1989 9.50 09/17/1989 13.20 10/12/1989 11.80 08/13/1989 9.20 09/17/1989 13.20 10/12/1989 10.80 08/13/1989 9.40 09/18/1989 11.40 10/13/1989 10.70 08/14/1989 9.40 09/18/1989 12.70 10/13/1989 10.20 08/14/1989 10.00 09/19/1989 9.00 10/14/1989 11.30 08/14/1989 10.00 09/19/1989 11.90 10/14/1989 10.30 08/15/1989 10.10 09/19/1989 9.00 10/15/1989 11.10 08/15/1989 8.90 09/24/1989 10.20 10/15/1989 10.90 08/16/1989 9.90 09/24/1989 9.80 10/16/1989 9.60 08/16/1989 10.10 09/25/1989 9.90 10/16/1989 10.40 08/17/1989 9.40 09/25/1989 9.40 10/17/1989 11.70 08/17/1989 9.10 09/26/1989 10.90 10/18/1989 9.80 08/18/1989 8.80 09/27/1989 10.80 10/18/1989 7.30 08/18/1989 8.90 09/27/1989 10.70 10/21/1989 11.40 08/19/1989 10.10 09/28/1989 11.10 10/21/1989 11.50 08/19/1989 7.10 09/28/1989 9.10 10/22/1989 8.00 08/20/1989 8.70 09/29/1989 10.70 10/22/1989 9.60 08/20/1989 7.10 09/29/1989 9.10 10/23/1989 11.30

08/21/1989 10.40 09/30/1989 10.70 10/23/1989 11.90 l 08/22/1989 10.90 09/30/1989 11.00 10/24/1989 12.40 1 08/22/1989 11.00 10/01/1989 10.60 10/24/1989 8.10 09/06/1989 11.10 10/01/1989 11.40 10/25/1989 12.50 09/06/1989 9.10 10/02/1989 11.60 10/26/1989 11.00 l 09/07/1989 9.10 10/03/1989 10.50 10/26/1989 11.80 09/07/1989 9.30 10/03/1989 9.50 10/27/1989 10.40
. Historical Dissolvcd Oxygsn Grab l Sampla Data for EBPC Discharge 1989-1998 '

. DATE l DO (mg/L) DATE DO (mg/L) DATE l DO (mg/L) l 10/27/.1989 - 11.30 11/16/1989 11.80 12/08/1989 14.70 10/28/1989 10.60 11/17/1989 10.80 12/09/1989 15.10 10/28/1989 10.50 11/17/1989 11.20 12/09/1989 14.00 10/29/1989 11.40 11/18/1989 10.80 12/10/1989 15.00 10/29/1989 10.70 11/18/1989 11.80 12/10/1989 13.40 10/30/1989 12.50 11/19/1989 11.30 12/11/1989 14.40 10/30/1989 11.40 11/19/1989 12.00 12/11/1989 14.50 10/31/1989 12.60 11/20/1989 13.30 12/11/1989 14.40 10/31/1989 12.70 11/20/1989 13.30 12/12/1989 13.00 11/01/1989 11.60 11/21/1989 15.10 12/13/1989 14.70 11/01/1989 10.40 11/21/1989 14.50 12/13/1989 14.90  !

11/02/1989 11.80 11/22/1989 14.60 12/14/1989 13.60 i 11/02/1989 10.50 11/22/1989 12.80 12/14/1989 14.40 11/03/1989 11.30 11/23/1989 12.50 12/15/1989 15.00 '

11/03/1989 10.60 11/24/1989 14.80 12/16/1989 13.50 l

11/04/1989 10.20 11/24/1989 15.60 12/16/1989 15.20  ;

11/04/1989 12.90 11/25/1989 16.10 12/17/1989 15.40 l 11/05/1989 11.20 11/25/1989 14.50 12/17/1989 16.40 I 11/05/1989 11.00 11/26/1989 16.20 12/18/1989 16.50 l 11/06/1989 11.90 11/26/1989 14.00 12/18/1989 17.10  !

11/06/1989 14.60 _ 11/27/1989 15.90 12/19/1989 14.00 l 11/06/1989 11.90 11/27/1989 15.10 Annual Avg. 11.56 11/07/1989 1 1.40 11/28/1989 14.40 Annual Min. 6.30 i 11/07/1989 13.90 11/28/1986 ! 12.20 11/08/1989 13.70 11/29/1989 14.00 11/08/1989 12.80 11/29/1989 13.50 11/09/1989 13.10 11/30/1989 14.20 11/09/1989 13.40 11/30/1989 14.20 11/10/1989 10.90 12/01/1989 14.10 11/10/1989 11.00 12/01/1989 14.60 11/11/1989 11.70 12/02/1989 13.30 11/11/1989 12.80 12/02/1989 13.50 11/12/1989 10.90 12/03/1989 14.40 11/12/1989 11.30 12/03/1989 12.80 11/13/1989 11.60 12/04/1989 13.40 11/13/1989 12.70 12/04/1989 14.40 11/13/1989 11.50 12/05/1989 15.80 11/14/1989 12.10 12/05/1989 15.10 11/14/1989 11.80 12/06/1989 14.20 11/15/1989 11.80 12/06/1989 14.30 11/15/1989 13.70 12/07/1989 14.70 11/16/1989 11.80 12/07/1989 13.40

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Historical Dissolved Oxygen Grab  !

Sampb Data for EBPC Dischargo 1989-1998

. DATE DO (mg/L) DATE l DO (mg/L) DATE DO (mg/L) 01/02/1990 13.40 07/13/1990 9.90 01/02/1991 12.20 01/08/1990 14.00 08/03/1990 9.10 01/07/1991 13.20 01/09/1990 14.10 08/06/1990 9.30 01/08/1991 13.40 l 01/10/1990 12.80 08/07/1990 9.50 01/09/1991 13.00 l 01/11/1990 14.30 08/08/1990 10.40 01/10/1991 13.20 01/12/1990 15.10 08/09/1990 10.20 01/11/1991 13.60 02/06/1990 15.00 08/10/1990 9.70 02/01/1991 14.20 02/07/1990 13.50 09/04/1990 11.70 02/04/1991 12.60 02/08/1990 13.00 09/10/1990 10.10 02/05/1991 12.30 02/09/1990 14.00 09/11/1990 10.90 02/06/1991 12.40 {

02/12/1990 12.70 09/12/1990 10.80 02/07/1991 13.00 1 03/05/1990 13.20 09/13/1990 10.50 02/08/1991 13.00 03/06/1990 12.80 09/14/1990 11.00 03/01/1991 14.00 l 03/07/1990 15.70 10/01/1990 10.50 03/04/1991 13.40 03/08/1990 13.80 10/02/1990 9.30 03/05/1991 14.00 03/09/1990 13.70 10/03/1990 9.80 03/06/1991 13.60 03/12/1990 14.00 10/04/1990 9.70 03/07/1991 13.00 ,

04/02/1990 12.40 10/05/1990 10.20 03/08/1991 14.00 1 04/04/1990 14.00 10/08/1990 9.50 04/01/1991 12.50 04/05/1990 12.40 11/05/1990 10.00 04/02/1991 12.70 l 04/06/1990 13.40 11/06/1990 10.20 04/03/1991 12.00 04/07/1990 12.80 11/07/1990 10.30 04/04/1991 13.10 l 04/08/1990 13.30 11/08/1990 10.50 04/05/1991 13.00 04/09/1990 12.80 11/09/1990 11.60 04/08/1991 12.60 05/01/1990 10.90 11/12/1990 11.00 05/02/1991 10.60 l 05/02/1990 11.30 12/03/1990 12.40 05/06/1991 10.50 05/03/1990 11.70 12/04/1990 14.00 05/07/1991 10.60 05/04/1990 11.50 12/05/1990 11.60 05/08/1991 11.40 05/07/1990 12.60 12/06/1990 13.40 05/09/1991 10.80 05/08/1990 10.60 12/07/1990 11.80 05/10/1991 10.80 05/09/1990 11.80 12/10/1990 12.00 06/03/1991 9.00 05/10/1990 10.90 Annual Avg. 11.60 06/04/1991 9.70 05/11/1990 10.20 Annual Min. 8.10 06/05/1991 9.10 06/01/1990 10.20 06/06/1991 8.20 06/04/1990 11.20 06/07/1991 8.20 06/05/1990 11.10 06/10/1991 9.30 06/06/1990 10.20 07/01/1991 8.80 06/07/1990 10.00 07/08/1991 9.10 06/08/1990 9.80 07/09/1991 9.40 07/02/1990 11.70 07/10/1991 11.60 07/09/1990 8.40 07/11/1991 9.70 07/10/1990 8.10 07/12/1991 9.70 07/11/1990 12.00 08/01/1991 9.10 07/12/1990 8.90 08/05/1991 8.50

[ ..

Historical Dissolved Oxyg3n Grab Samplo Data for EBPC Discharge 1989-1998 DATE DO (mg/L) DATE l DO (mg/L) DATE l DO (mg/L) 08/06/.1991 9.10 01/02/1992 12.20 09/15/1992 10.10 08/07/1991 8.90 01/06/1992 11.50 09/16/1992 10.90 08/08/1991 11.10 01/07/1992 12.00 09/17/1992 11.90 08/09/1991 8.90 01/08/1992 12.70 09/18/1992 9.90 09/03/1991 9.90 01/09/1992 10.10 10/01/1992 10.70 09/09/1991 9.60 01/10/1992 12.70 10/05/1992 9.80 09/10/1991 9.60 02/03/1992 13.80 10/06/1992 10.00 09/11/1991 11.00 02/04/1992 16.20 10/07/1992 7.80 09/12/1991 9.40 02/05/1992 13.70 10/08/1992 9.70 09/13/1991 10.20 02/06/1992 14.40 10/09/1992 10.00 10/01/1991 10.30 02/07/1992 15.00 11/02/1992 8.60 10/07/1991 9.20 02/10/1992 12.40 11/03/1992 11.00 10/08/1991 8.90 03/02/1992 14.40 11/04/1992 11.00 10/09/1991 8.60 03/03/1992 13.80 11/05/1992 11.00 10/10/1991 11.30 03/04/1992 12.20 11/06/1992 11.00 10/11/1991 10.90 03/05/1992 13.20 11/09/1992 11.30 11/01/1991 10.30 03/06/1992 12.50 12/01/1992 11.20 11/04/1991 9.70 03/09/1992 13.20 12/07/1992 12.80 11/05/1991 9.20 04/01/1992 13.10 12/08/1992 13.40 11/06/1991 11.10 04/06/1992 10.80 12/09/1992 14.40 11/07/1991 11.60 04/07/1992 11.60 12/10/1992 12.80 11/08/1991 11.70 04/08/1992 12.10 12/14/1992 15.00 12/02/1991 13.60 04/09/1992 11.60 12/15/1992 14.80 12/09/1991 13.00 04/10/1992 10.70 12/16/1992 14.00 12/10/1991 12.20 05/01/1992 11.20 12/17/1992 15.20 12/11/1991 12.20 05/04/1992 10.50 12/18/1992 12.60 12/12/1991 12.30 05/05/1992 10.00 Annual Avg. 11.46 12/13/1991 l 12.30 05/06/1992 10.40 Annual Min. 6.00 Annual Avg. 11.17 05/07/1992 8.40 Annual Min. 8.20 05/08/1992 13.30 07/01/1992 9.50 07/06/1992 9.80 07/07/1992 8.70 07/08/1992 9.50 07/10/1992 6.00 08/03/1992 9.80 08/04/1992 10.60 08/05/1992 9.50 08/06/1992 9.60 08/07/1992 9.60 08/10/1992 8.50 09/01/1992 9.60 09/08/1992 10.10 09/14/1992 10.50

Historical Dissolved Oxyg5n Grab Sampla Data for EBPC Discharge 1989-1998 DATE DO (mg/L) DATE DO (mg/L) DATE DO (mg/L) 01/05/1993 14.00 09/07/1993 9.10 01/03/1994 15.20 01/06/1993 13.20 09/13/1993 9.30 01/04/1994 15.50 01/07/1993 11.90 09/14/1993 10.00 01/05/1994 14.20 01/08/1993 13.00 09/15/1993 9.80 01/06/1994 15.10 01/11/1993 12.30 _ 09/16/1993 8.30 01/07/1994 14.40 02/01/1993 14.40 09/17/1993 9.50 01/14/1994 15.40 02/02/1993 13.60 10/01/1993 8.40 02/01/19.4 15.30 02/03/1993 13.60 10/04/1993 10.20 02/07/1994 14.80 02/04/1993 13.20 10/05/1993 9.80 02/08/1994 13.40 02/05/1993 13.30 10/06/1993 10.10 02/09/1994 14.80 02/08/1993 14.60 10/08/1993 10.40 02/10/1994 14.80 03/01/1993 14.90 11/01/1993 12.00 02/11/1994 15.40 03/03/1993 14.60 11/02/1993 12.30 03/01/1994 14.10 03/04/1993 13.00 11/03/1993 12.30 03/07/1994 13.70 03/08/1993 13.10 11/04/1993 11.60 03/08/1994 12.60 03/09/1993 13.50 11/05/1993 12.50 03/09/1994 14.40 03/10/1993 13.50 11/08/1993 11.10 03/10/1994 13.70 03/11/1993 13.10 12/01/1993 11.90 03/11/1994 13.60 03/12/1993 13.30 12/06/1993 11.50 04/04/1994 12.70 04/06/1993 12.00 12/07/1993 12.20 04/05/1994 12.20 05/03/1993 10.80 12/08/1993 12.10 04/06/1994 13.70 05/04/1993 10.60 12/09/1993 12.00 04/07/1994 12.30 05/05/1993 10.70 1 12/10/1993 12.90 04/08/1994 13.00 05/06/1993 10.30 Annual Avg. 11.20 04/11/1994 11.80 05/07/1993 12.10 Annual Min. 8.00 05/02/1994 11.00 05/10/1993 9.60 05/03/1994 10.60 06/01/1993 10.00 05/04/1994 10.20 06/07/1993 10.80 05/05/1994 10.80 06/08/1993 10.90 05/06/1994 10 60 06/09/1993 11.00 05/09/1994 1d.20 06/10/1993 10.00 06/01/1994 10.40 06/11/1993 9.20 06/06/1994 14.40 07/06/1993 8.40 06/07/1994 10.00 l 07/12/1993 8.40 06/08/1994 10.60 07/13/1993 8.70 06/09/1994 8.80 07/14/1993 8.30 06/10/1994 5.20 07/15/1993 10.40 06/13/1994 9.20 07/16/1993 8.90 06/14/1994 11.40 l 08/02/1993 9.20 06/15/1994 10.30 08/03/1993 9.20 06/16/1994 9.00 08/04/1993 8.60 06/17/1994 8.20 l 08/05/1993 8.00 07/05/1994 9.30 l

08/06/1993 8.00 07/11/1994 l 10.80 i

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.; ,  ; Historical Dissolvad Oxygbn Grab l

, Sampla Data for EBPC Discharge 1989-1998

- DATE l DO (mg/L) DATE l DO (mg/L) DATE l DO (mg/L) 07/13/1.994 ' 10.40 01/03/1995 13.40 07/19/1995 9.60 07/14/1994 9.80 01/09/1995 13.70 07/20/1995 9.00 07/15/1994 9.70 01/10/1995 14.50 07/21/1995 9.10 08/01/1994 9.20 01/11/1995 12.80 07/22/1995 8.20 08/02/1994 8.80 01/12/1995 12.40 07/23/1995 9.00 08/03/1994 9.00 01/13/1995 13.80 07/24/1995 7.80 08/04/1994 9.30 02/01/1995 12.60 07/25/1995 9.50 08/08/1994 ,9.10 02/06/1995 14.80 07/26/1995 9.50 08/09/1994 9.10 02/07/1995 13.10 07/27/1995 8.80 08/10/1994 8.70 02/08/1995 11.40 08/01/1995 10.20 08/11/1994 9.20 02/09/1995 14.20 08/07/1995 9.30 l 08/12/1994 9.30 02/10/1995 16.00 08/08/1995 8.20 ,

09/06/1994 10.30 03/01/1995 13.10 08/09/1995 10.40 09/12/1994 10.10 03/06/1995 13.50 08/10/1995 9.70 l 09/13/1994 10.00 03/07/1995 15.40 08/11/1995 10.00 l 09/14/1994 11.10 03/08/1995 14.60 09/05/1995 9.90 09/15/1994 9.20 03/09/1995 14.30 09/11/1995 11.40 09/16/1994 7.60 03/10/1995 14.20 09/12/1995 9.40 10/03/1994 10.50 04/03/1995 11.50 09/13/1995 10.30 10/04/1994 9.80 04/04/1995 10.30 09/14/1995 9.20 10/05/1994 8.80 04/05/1995 12.20 09/15/1995 8.80 10/06/1994 10.50 04/06/1995 12.50 10/02/1995 11.00 10/07/1994 10.90 04/07/1995 10.20 10/02/1995 11.00 10/11/1994 12.20 04/10/1995 10.60 10/03/1995 11.40 11/01/1994 10.40 05/01/1995 11.20 10/04/1995 10.40 11/07/1994 11.90 05/02/1995 10.10 10/05/1995 10.80 11/08/1994 12.30 05/03/1995 11.00 10/06/1995 10.00 11/09/1994 10.60 05/04/1995 12.10 10/09/1995 10.00 11/10/1994 13.60 05/05/1995 11.50 11/06/1995 10.20 11/11/1994 12.60 05/09/1995 9.80 11/07/1995 14.20 12/01/1994 10.90 06/01/1995 9.20 11/08/1995 13.40 12/12/1994 12.20 06/05/1995 9.00 11/09/1995 15.50 12/13/1994 10.40 06/06/1995 9.50 11/10/1995 12.70 12/14/1994 11.80 06/07/1995 9.20 11/14/1995 12.20 12/15/1994 12.30 06/08/1995 9.40 12/04/1995 13.70 12/16/1994 13.00 06/09/1995 9.00 12/05/1995 12.80 Annual Avg. 11.41 07/06/1995 10.60 12/05/1995 12.80 Annual Min. 5.20 07/10/1995 10.70 12/06/1995 14.20 07/11/1995 10.10 12/07/1995 14.10 07/12/1995 9.80 12/08/1995 13.80 07/13/1995 8.90 12/12/1995 14.00 07/14/1995 9.80 Annual Avg. 11.28 J7/17/1995 8.50 Annual Min. 7.80 07/18/1995 8.40

. Historical Dissolved Oxygan Grab Sampb Data for EBPC Discharge 1989-1998 DATE l DO (mg/L) DATE l DO (mg/L) DATE l DO (mg/L) 01/02/1996 15.10 07/19/1996 9.10 10/01/1996 10.50 01/15/1996 15.90 07/19/1996 7.60 10/08/1996 10.00 01/22/1996 14.40 07/21/1996 7.90 10/08/1996 10.00 01/23/1996 14.00 07/22/1996 9.60 10/23/1996 10.80 1 01/24/1996 15.40 07/23/1996 9.80 10/24/1996 10.50 01/25/1996 12.60 07/24/1996 10.50 10/29/1996 11.30 01/26/1996 16.50 07/25/1996 10.20 11/05/1996 11.80 02/01/1996 14.10 07/26/1996 8.90 11/07/1996 12.40 02/05/1996 15.60 07/29/1996 7.50 11/14/1996 10.80 02/06/1996 17.10 07/30/1996 9.50 11/14/1996 10.80 02/07/1996 14.80 08/01/1996 9.50 11/14/1996 10.80 02/08/1996 13.80 08/01/1996 9.50 11/19/1996 12.10 02/09/1996 13.40 08/01/1996 9.50 11/27/1996 13.70 03/04/1996 14.60 _08/02/1996 9.30 12/03/1996 14.60 03/05/1996 16.00 08/02/1996 9.50 12/04/1996 13.70 03/06/1996 15.20 08/03/1996 9.80 12/05/1996 14.10 03/07/1996 15.80 08/03/1996 10.00 12/09/1996 13.30

_03/08/1996 14.70 08/04/1996 9.80 12/11/1996 14.10 03/11/1996 15.30 08/05/1996 9.20 12/11/1996 14.10 04/01/1996 14.10 08/05/1996 9.50 Annual Avg. 11.27 04/08/1996 13.80 08/06/1996 9.50 Annual Min. 5.80 04/09/1996 14.40 08/06/1996 9.70 04/10/1996 14.50 08/07/1996 8.80 04/11/1996 13.60 08/07/1996 9.10 04/12/1996 11.10 08/08/1946 10.20 1 05/06/1996 11.80 08/08/1996 10.40 05/07/1996 13.10 08/08/1996 10.20 05/09/1996 15.10 08/09/1996 8.90 05/10/1996 11.70 08/09/1996 8.80 05/16/1996 11.10 08/10/1996 9.60 06/03/1996 9.30 08/10/1996 9.40 06/04/1996 8.80 08/11/1996 10.80 06/05/1996 8.60 _ _ _08/11/1996 10.60 06/06/1996 8.80 08/12/1996 8.80 06/07/1996 8.20 08/12/1996 8.70 i 06/10/1996 8.60 08/26/1996 9.90 l 07/08/1996 9.00 08/27/1996 9.30 j 07/09/1996 9.50 09/03/1996 9.90 07/10/1996 9.30 09/05/1996 10.30 07/11/1996 9.60 09/10/1996 9.40 07/15/1996 5.80 09/20/1996 12.10 07/16/1996 9.60 09/27/1996 11.50 07/17/1996 8.90 09/30/1996 10.90 07/18/1996 10.00 10/01/1996 10.50

, '; Historical Dissolvsd Oxygan Grab i Sampla Data for EBPC Discharga 1989-1998 DATE DO (mg/L) DATE l DO (mg/L) DATE l DO (mg/L) 01/08/1997 11.80 09/18/1997 11.90 01/05/1998 14.30 01/13/1997 12.70 09/22/1997 12.90 01/14/1998 10.60 01/15/1997 13.20 09/26/1997 11.70 01/21/1998 11.60 01/15/1997 13.20 10/01/1997 12.30 01/22/1998 12.60 01/16/1997 13.90 10/06/1997 9.40 01/26/1998 12.30 01/21/1997 12.50 10/08/1997 12.40 01/26/1998 8.50 01/22/1997 13.40 10/15/1997 10.80 02/04/1998 11.90 02/04/1997 12.30 10/23/1997 10.90 02/04/1998 11.90 02/13/1997 12.80 11/07/1997 13.20 02/05/1998 11.80 02/18/1997 13.60 11/12/1997 11.50 02/11/1998 11.90 I 02/19/1997 13.50 11/14/1997 12.20 02/12/1998 10.50 i 02/24/1997 14.10 11/18/1997 12.80 02/12/1998 9.30 03/03/1997 12.90 11/20/1997 12.60 02/19/1998 10.80 l 03/05/1997 11.20 11/25/1997 11.40 03/04/1998 11.60 l 03/10/1997 10.20 12/01/1997 8.80 03/10/1998 11.20 03/11/1997 10.60 12/02/1997 10.60 03/12/1998 12.40 l 03/18/1997 9.00 12/04/1997 12.60 03/12/1998 12.40 04/02/1997 11.50 12/08/1997 12.80 03/16/1998 12.60 1 04/03/1997 11.50 12/22/1997 13.40 03/27/1998 11.80 04/09/1997 10.00 12/29/1997 12.40 04/01/1998 10.00 l 04/09/1997 11.80 Annual Avg. 11.57 04/08/1998 10.80 04/09/1997 10.00 Annual Min. 8.40 04/16/1998 12.30 04/15/1997 11.00 04/21/1998 11.70 l 05/01/1997 11.70 04/22/1998 12.40 05/15/1997 11.90 05/04/1998 12.60 05/20/1997 11.90 05/07/1998 9.00 06/02/1997 11.80 05/14/1998 10.30 06/11/1997 9.90 05/18/1998 10.10 l 06/11/1997 9.90 05/20/1998 9.70 06/17/1997 10.60 05/21/1998 10.60 06/18/1997 12.30 Annual Avg. 11.32 06/23/1997 10.00 Annual Min. 8.50 06/25/1997 8.90 07/02/1997 8.40 07/15/1997 9.90 Total Avg. 11.41 07/21/1997 11.00 Total Min. 5.20 08/01/1997 11.30 08/05/1997 10.40 08/12/1997 10.30 08/20/1997 9.70 08/25/1997 12.90 08/26/1997 12.80 09/02/1997 10.60 09/09/1997 11.00
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