WQ0012948_Additional Information Request_20200617

ROY COOPER
Governor
MICHAEL S. REGAN
Secretary
S. DANIEL SMITH
Director
NORTH CAROLINA
Environmental Quality
June 17, 2020
GARY GARDNER — ENGINEERING SECTION CHIEF
NORTH CAROLINA WILDLIFE RESOURCES COMMISSION
POST OFFICE BOX 1600
PISGAH FOREST, NORTH CAROLINA 28768-1600
Subject: Application No. WQ0012948
Additional Information Request
Pisgah Center for Wildlife
Education WWTF
Wastewater Irrigation System
Transylvania County
Dear Mr. Gardner:
Division of Water Resources' Central and Regional staff has reviewed the application package
received April 15, 2020. However, additional information is required before the review may be completed.
Please address the items on the attached pages no later than the close of business on July 17, 2020.
Please be aware that you are responsible for meeting all requirements set forth in North Carolina
rules and regulations. Any oversights that occurred in the review of the subject application package are
still the Applicant's responsibility. In addition, any omissions made in responding to the outstanding items
in Sections A through D, or failure to provide the additional information on or before the above requested
date may result in your application being returned as incomplete.
Please reference the subject application number when providing the requested information. All
revised and/or additional documentation shall be signed, sealed and dated (where needed), with two paper
copies and one electronic copy submitted to my attention at the address below.
If you have any questions regarding this request, please do not hesitate to contact me at (919) 707-
3659 or [e-mail]. Thank you for your cooperation.
Sincerely,
Erick Saunders, Engineer
Division of Water Resources
cc: Asheville Regional Office, Water Quality Regional Operations Section (Electronic Copy)
Mark C. Brooks, PE — Brooks Engineering Associates, P.A. (Electronic Copy)
Permit Application File WQ0012948
D E 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
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Mr. Gary Gardner
June 17, 2020
Page 2 of 2
A. Application:
It is mentioned in section V.S. of the Wastewater Irrigation System application form (FORM: WWIS 06-16)
that automatically activated standby power onsite capable of power all essential treatment units would be
provided under design conditions in accordance with 15A NCAC 02T .0505(1). The cover letter mentions
that this would be addressed with a backup generator, and the Power Reliability Plan in the preliminary
Operation and Maintenance Manual states that a backup generator and automatic transfer switch is currently
employed at the system. However, the current permit does not include this generator in the facility
description, nor are the auxiliary power permit conditions included in the permit issued December 10, 2019.
The equipment information in V.1 l.h. do not propose any specifications for an "Auxiliary Generator", the
engineering plans do not depict this generator, and the specifications do not mention the installation of one.
Please provide information regarding this backup generator that meets the requirements of 15A NCAC 02T
.0505(1) so that it may be incorporated into the permit.
2. The WWIS 06-16 form was signed by Gary Gardner, the Engineering Section Chief. According to 15A
NCAC 02T .0106(a)(4), the application shall be signed by either an executive officer, elected official in the
highest level of elected office, or other authorized employee in the case of a municipal, state, or public entity.
The attached signature authority delegation letter shall be signed in accordance with 15A NCAC 02T
.0106(d) to authorize Mr. Gardner to sign this permit application on behalf of the North Carolina Wildlife
Resources Commission. Alternatively, the WWIS 06-16 form shall be signed by a signature authority and
resubmitted. On file, we have Melinda Patterson, the Center Director, as having signature authority.
B. Engineering Plans:
1. See Item A. 1. Please provide location and detail of this generator and automatic transfer switch, and show
the connections to treatment units that use it as an auxiliary power source.
2. The facility description of the previous permit mentions a 4,000 gallon baffled septic tank that is not depicted
in the engineering plans. Please provide updated plans with the location of this septic tank and associating
piping and appurtenances, or clarify its omission.
3. The facility description of the previous permit mentions a tablet chlorinator that is not depicted in the
engineering plans. Please provide updated plans with the location of this tablet chlorinator and associating
piping and appurtenances, or clarify its omission.
C. Engineering Calculations:
1. Both the plans and the specifications reference an EZ-Treat Model 4L Filter media pod as the chosen fixed
media pods. Sizing for these units appears to be based on manufacturer and NSF Certification data which
specify removal rates of biological oxygen demand (BOD), total nitrogen (TN), and total suspended solids
(TSS) at certain loading rates. However, I cannot find any manufacturer's information for the Model 4L filter
which would support these removal rates. Please provide the manufacturer and NSF data that support these
sizing and removal rate calculations.
2. Section 3.2 — "Media Pod Dosing System" of the specifications specify a Sta-Rite Model STEP 50 1.0 HP 3
stage 230 V pump. Please provide a pump performance curve for this pump.
D. Power Reliability Plan:
1. See A. 1. Provide the technical specifications of the referenced generator.