WQ0031506_FP AttA_20080515

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Michael F. Easley, GovemoT
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William G. Ross Jr., Secretary
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North Carolina Department of Environment and Natural Resources
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In Sullins. Director
Dieenvision
Division of Water Quality
Mr. Ed Kerwin, Executive Director
Orange Water & Sewer Authority
PO Box 366
400 Jones Ferry Road
Carrboro, North Carolina 27510
May 15, 2008
Subject: Attachment A Certification
Permit No. WQ0031506
Orange Water and Sewer Authority
Reclaimed Water Storage & Distribution System,
and Bulk Fill Operation
Orange County
In accordance with your notification received on April 3, 2008, we are forwarding herewith a
modified Attachment A to Orange Water and Sewer Authority for the subject reclaimed water program.
This certification is being issued to modify Attachment A by the approval of sampling location at
the bulk fill hydrant for fecal coliform.
Please replace the existing Attachment A of Permit No. WQ0031506 that was previously
certified on February 29, 2008, with this modified Attachment A. Note that it is the Permittee's
responsibility to ensure that a complete permit is created by inserting this modified Attachment A into
Permit No. WQ0031506, issued on February 29, 2008.
This modified Attachment A shall be effective from the date of issuance; shall void Attachment A
of Permit No. WQ0031506 that was previously certified on February 29, 2008; and shall be subject to the
conditions and limitations as specified therein as well as those specified in the above -referenced permit.
As always, remember to take the time to review this modified Attachment A thoroughly, as some of
the conditions contained therein may have been changed since the last certification. Note that this
modified Attachment A is hereby incorporated by reference into Permit No. WQ0031506, issued on
February 29, 2008.
If any parts, requirements, and/or limitations contained in this certification or modified
Attachment A are unacceptable, you have the right to request an adjudicatory hearing upon written
request within 30 days following receipt of the certification. This request shall be in the form of a written
petition, conforming to Chapter 150B of the North Carolina General Statutes and filed with the Office of
Administrative Hearings at 6714 Mail Service Center, Raleigh, North Carolina 27699-6714. Unless such
demands are made, this permit shall be final and binding.
NorthCarohna
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Aquifer Protection Section 1636 Mail Service Center Raleigh, NC 27699-1636 Phone [phone] Customer Service
Internet: http://Mo.mr.state.nc.us 2728 Capital Boulevard Raleigh, NC 27604 Fax [phone]
Fax [phone]
An Equal Opporlunity/Affirmative Action Employer - 50% Recycled110% Post Consumer paper

If you need any additional information concerning this matter, please contact Chonticha
McDaniel by telephone at [phone] or via e-mail at [e-mail].
Sincerely,
or Coleen H. Sullins
cc: Orange County Health Department
Raleigh Regional Office - Aquifer Protection Section
APS Central Files
LAU File

ATTACHMENT A - LIMITATIONS AND MONITORING REQUIREMENTS
PPI 001 - Bulk Fill Operation (temporary) a
Permit Number: WQ0031506 Version: 1.3
RECLAIMED WATER CHARACTERISTICS
RECLAIMED WATER LIMITS
MONITORING REQUIREMENTS
Parameter Description - PCS Code
Monthly Average
Weekly Average
Daily Maximum
Measurement
Frequency
Sample
'Type
Nitrite plus Nitrate Total 1 DET. (as N) - 00630
Weekly b
Composite
Solids, Total Suspended - 00530
5
mg/I
10.
mg/l
Daily
Composite
Chloride (as Cl) - 00940
3 X year`
Composite
Nitrogen, Ammonia Total (as N) - 00610
4
mg/l
6_
mg/1
Daily
Composite
BOD, Carbonaceous 05 Day, 20C - 80082
10
mg/1
15.
mg/l
Daily
Composite
Coliforrn, Fecal MF, M-FC Broth,44.5C - 31616 (geom.mean)
14 a
#/100ml
25.
#/100ml
Daily
Grab
Turbidity, HCH Turbidimiter - 00076 `
10.
ntu
See Permit
Grab
Flow, in conduit or thru treatment plant - 50050
Continuous
Recorder
PH - 00400
6.0 — 9.0 f
su
9.0
Su
Dailyb
Grab
'Effluent sample location for all parameters except turbidity and fecal colifonn shall be sampled at the effluent sampling point associated with NPDES permit
NC0025241. Turbidity and fecal colifoun sampling shall be sampled at the bulk fill station.
b Sampling frequency is set to match NPDES permit sampling frequency. Sample results associated with NPDES permitting requirements can be used formeeting
the sampling requirements for this permit as long as the sampling locations remaui the same in both permits.
3 X year sampling sliall be performed every March, July and November.
a Monthly average for fecal coliform shall a geometric mean.
Turbidity sampling shall be performed immediately prior to all bulk filling procedures. Recorded turbidity meter results shall be documented and maintained with
each bulk filling event. The highest turbidity value recorded for each day of operation shall be reported.
f The effluent pH shall not be less than 6.0 standard units nor greater than 9.0 standard units
WQ0031506 Version 1.3 Attachment A Page 1 I of 13

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WQ00315.,, Version 13 Attachment A ;e 12 of 13