WQ0009267_Modification_20230508 (3)

Kevin Witchger
From: Saunders, Erickson G <[e-mail]>
Sent: Tuesday,January 24, 2023 1:24 PM
To: Kelli Braunbach; Kevin Witchger
Cc: Thornburg, Nathaniel; Robson, Dorothy M; Manuel, Vanessa;Vinson, Scott;
[e-mail]; Rebecca Kaufman
Subject: [ATTACHMENT CERTIFICATION] WQ0001203 - Ponderosa Subdivision WWTF
Attachments: WQ0001203AttA230124.pdf
Importance: High
CAUTION:This email originated from outside of the Wake County network. Do not click links or open attachments unless you
recognize the sender and know the content is safe.
All,
Attached is the Attachment A Certification for Wake County's Ponderosa Subdivision WWTF which has been modified to
change the measurement frequencies for Total Residual Chlorine and pH from "Weekly"to "Per Event" based on the
configuration of the irrigation system. Please respond to the read receipt on this email to verify that you have received
this permit's issuance.
Regards,
Erick Saunders
Environmental Engineer 111
Division of Water Resources—Non-Discharge Branch
North Carolina Department of Environmental Quality
Office: [phone]
Cell: [phone]
[e-mail]
�
NORTH CAROLINA kl /)
Department of Environmental Quality
Email correspondence to and from this address is subject to the North
Carolina Public Records Law and may be disclosed to third parties.
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n 4 V
ROY COOPER v = o
Governor
ELIZABETH S.BISER ` I> r
a�
Secretary
RICHARD E.ROGERS,JR. NORTH CAROLINA
Director Environmental Quality
January 24,2023
KELLI A.BRAUN13ACH—DIRECTOR,GENERAL SERVICES ADMINISTRATION
WAKE COUNTY
POST OFFICE BOX 550
RALEIGH,NORTH CAROLINA 27602
Subject: Permit No.WQ0001203
Ponderosa Subdivision WWTF
Attachment A Certification
Wake County
Dear Ms. Braunbach:
In accordance with your permit minor modification request received August 4, 2022, and
subsequent additional information received November 18, 2022, we are forwarding herewith a modified
Attachment A certified January 24,2023,to Wake County for the subject wastewater irrigation system.
Modifications to the subject Attachment are as follows:Due to the configuration of the chlorination
system, which is dosed through the irrigation pump and only doses during irrigation events, the sampling
frequency for pH(00400) and Total Residual Chlorine(50060)has been changed to"Per Event".
The modified Attachment A shall be effective from the date of certification until July 31,2023 (i.e.,
expiration date of the current permit), shall replace Attachment A of Permit No. WQ0001203 issued May
25,2018,and shall be subject to the conditions and limitations as specified therein,as well as those specified
in the above-referenced permit. Please replace Attachment A of Permit No. WQ0001203 that was issued
May 25, 2018 with the modified Attachment A. Please note that the Permittee shall submit a renewal
application no later than February 1,2023.
If any parts, requirements, or limitations contained in this certification are unacceptable, the
Permittee has the right to request an adjudicatory hearing upon written request within 30 days following
receipt of this permit. 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,NC 27699-6714. Otherwise,this certification shall be final and binding.
DE Q�� North Carolina Department of Environmental Quality I Division of Water Resources
_ 512 North Salisbury Street 1 1617 Mail Service Center I Raleigh,North Carolina 27699-1617
NORTH CAROLINA
awe of E-I—m"i � /'� 919.707.9000

Ms.Kelli A.Braunbach
January 24,2023
Page 2 of 2
If you need any additional information concerning this matter, please contact Erick Saunders at
[phone] or erickson.saundersgncdenr.gov.
Sincerely,
Richard E. Rogers,Jr.,Director
Division of Water Resources
cc: Wake County Health Department(Electronic Copy)
Raleigh Regional Office,Water Quality Regional Operations Section(Electronic Copy)
Guido J. Carrara,P.E.—G.C. Environmental, Inc. (Electronic Copy)
Laserfiche File(Electronic Copy)
Digital Permit Archive(Electronic Copy)

ATTACHMENT A—LIMITATIONS AND MONITORING REQUIREMENTS Permit Number: WQ0001203 Version: 4.1
PPI 001 —WWTF Effluent
EFFLUENT CHARACTERISTICS EFFLUENT LIMITS MONITORING REQUIREMENTS
PCS Units of Monthly Monthly Measurement Sample
Code Parameter Description Measure Average Geometric Mean Daily Minimum Daily Maximum Frequency Type
00310 BOD,5-Day(20°C) mg/L 4 x Year 1 Grab
00940 Chloride(as Cl) mg/L 3 x Year 2 Grab
50060 Chlorine,Total Residual mg/L Per Event 3 Grab
31616 Coliform,Fecal MF,M-FC Broth,44.5°C #/100 mL 4 x Year 1 Grab
50050 Flow,in Conduit or thru Treatment Plant GPD 20,000 Continuous Recorder
00610 Nitrogen,Ammonia Total(as N) mg/L 4 x Year 1 Grab
00625 Nitrogen,Kjeldahl,Total(as N) mg/L 4 x Year 1 Grab
00620 Nitrogen,Nitrate Total(as N) mg/L 4 x Year 1 Grab
00600 Nitrogen,Total(as N) mg/L iAl 4 x Year 1 Grab
00400 pH su Per Event 3 Grab
00665 Phosphorus,Total(as P) mg/L 4 x Year 1 Grab
70300 Solids,Total Dissolved—180°C mg/L 3 x Year 2 Grab
00530 Solids,Total Suspended mg/L 7 4 x Year 1 Grab
1. 4 x Year sampling shall be conducted in March,June,September,and December.
2. 3 x Year sampling shall be conducted in March,July,and November.
3. The Division has granted an exception to the Non-Discharge Effluent Monitoring Policy due to the configuration of the chlorination system,which is dosed through the irrigation pump and only
doses during irrigation events. Accordingly,the Permittee shall sample Total Residual Chlorine and pH per irrigation event instead of weekly.
WQ0001203 Version 4.1 Attachment A Pagel of 1

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