NC0060755_Authorization to Construct_19980612

State of North Carolina
Department of Environment T
and Natural Resources
Division of Water Quality
James B. Hunt, Jr., Governor
Wayne McDevitt, Secretary
A. Preston Howard, Jr., P.E., Director NCDENR
June 12, 1998
Mr. Carl Daniel, Vice President
Carolina Water Service, Inc of NC
Post Office Drawer 240908
Charlotte, North Carolina 28224
Dear Mr. Daniel:
Subject: Permit No. NCO060755
Authorization to Construct
Project No. ACA060755
Saddlewood Subdivision
Gaston County
The Division received a letter of request for an Authorization to Construct April 1, 1998 and final plans
and specifications for the subject project have been reviewed and found to be satisfactory. Authorization is
hereby granted for the construction of facilities at the Saddlewood Subdivision WWT`P with discharge into an
unnamed tributary to Crowders Creek in the Catawba River Basin. Specifically, authorization is granted for the
construction of-
• a new chlorination unit,
• a dechlorination unit,
• a fine bubble diffuser in the dechlorination tank, and
0' all associated piping, controls, and appurtenances.
This Authorization to Construct is issued in accordance with Part III, Paragraph A of NPDES Permit No.
NCO060755 issued July 7, 1997, and shall be subject to revocation unless the wastewater treatment facilities are
constructed in accordance with the conditions and limitations specified in Permit No. NCO060755.
The sludge generated from these treatment facilities must be disposed of in accordance with G.S. 143-
215.1 and in a manner approved by the North Carolina Division of Water Quality.
In the event that the facilities fail to perform satisfactorily, including the creation of nuisance conditions,
the Permittee shall take immediate corrective action,. including those as may be required by this. Division, such as
the construction of additional or replacement wastewater treatment or disposal facilities.
The Mooresville Regional Office, telephone number [phone], shall be notified at least forty-eight
(48) hours in advance of operation of the installed facilities so that an in -place inspection can be made. Such
notification to the regional supervisor shall be made during the normal office hours from 8:00 a.m. until 5:00 p.m.
on Monday through Friday, excluding State Holidays.
Upon completion of construction and prior to operation of this permitted facility, acertification must be
received from a professional engineer certifying that the permitted facility has been installed in accordance with
the NPDES Permit, this Authorization to Construct and the approved plans and specifications. Mail the
Certification to the NPDES Unit, P.O. Box 29535, Raleigh, NC 27626-0535.
P.O. Box 29535, Raleigh, North Carolina 27626-0535 Telephone [phone]/FAX [phone]
An Equal Opportunity Affirmative Action Employer 50% recycled/ 10% post -consumer paper

Permit No. NCO060755
Authorization to Construct
Saddlewood Subdivision
June 12, 1998
Page 2
Upon classification of the facility by the Certification Commission, the Permittee shall employ a certified
wastewater treatment plant operator to be in responsible charge (ORC) of the wastewater treatment facilities. The
operator must hold a certificate of the type and grade at least equivalent to or greater than the classification
assigned to the wastewater treatment facilities by the Certification Commission. The Permittee must also employ
a certified back-up operator of the appropriate type and grade to comply with the conditions of Title 15A, Chapter
8A, .0202. The ORC of the facility must visit each Class I facility at least weekly and each Class 11, 111, and IV
facility at least daily, excluding weekends and holidays, and must properly manage and document daily operation
and maintenance of the facility and must comply with all other conditions of Title 15A, Chapter 8A, .0202. Once
the facility is classified, the Permittee must submit a letter to the Certification Commission which designates the
operator in responsible charge within thirty days after the wastewater treatment facilities are 50% complete.
A copy of the approved plans and specifications shall be maintained on file by the Permitteefor the life
of the facility.
The Operational Agreement between the Permittee and the Environmental Management Commission is
incorporated herein by reference and is a condition of this Permit. Noncompliance with the terms of the
Operational Agreement shall subject the Permittee to all sanctions provided by G. S. 143-215.6 for violation of or
failure to act in accordance with the terms and conditions of this Permit.
Failure to abide by the requirements contained in this Authorization to Construct may subject the
Permittee to an enforcement action by the Division of Water Quality in accordance with North Carolina General
Statute 143-215.6A to 143-215.6C.
The issuance of this Authorization to Construct does not preclude the Permittee from complyingwith any
and all statutes, rules, regulations, or ordinances which may be imposed by other government agencies (local,
state, and federal) which have jurisdiction.
One (1) set of approved plans and specifications is being forwarded to you. If you have any questions or
need additional information, please contact Ms. Mary Cabe, telephone number [phone], extension 518.
Sincerely,
Preston Howard, Jr., P.E.
cc: Central Files
NPDES Unit, Permit File
Mooresville Regional Office, Water Quality
Technical Assistance and Certification Unit
Mr. Herbert R. Moore, PE
Moore Engineering Associates
313 North Main Street, Suite 200
Monroe, North Carolina 28112

To
NOu4 lot",
POINT SoUj�CE BRAIVC/q
SOC PRIORITY PROJECT: Yes--- No_X_
Permits and Engineering Unit
Water Quality Section
Attention: Phyllis Cameron
Date: May 1, 1998
AUTHORIZATION TO CONSTRUCT
NPDES PERMIT
REPORT AND RECOMMENDATIONS
County: Gaston
Permit No. ACA060755
MRO No. 98-030
PART I - GENERAL INFORMATION
ICS-01
a L�n wa D
MAY U 1 10L
POINT SOURCE BRANCH
NRecev'ej)
fo "t f.. '-
MAY 04 1998
By
1. Facility and Address: Saddlewood Subdivision WWTP
Carolina Water Service, Inc.
Post Office Drawer 240908
Charlotte, North Carolina 29224
2. Date of On -Site Investigation (if conducted): March 26, 1996
3. Report Prepared By: G. T. Chen
4. Persons Contacted and Telephone Number: Mr. Mike Davis, ORC,
[phone] (contacted on last investigation).
5. Verified Discharge Point(s). List for all discharge points:
Latitude: 350 101 4211 Longitude: 810 101 5911
Attach a U.S.G.S. map extract and indicate treatment facility
site and discharge point on map. Ensure discharge point(s)
correspond to NPDES permitted discharge points.
USGS Quad No.: G 14 NW USGS Quad Name: Gaston South, NCISC
6. Site size and expansion area consistent with application?
Yes.
7. Topography (relationship to flood plain included): Plant is
located on a small flat area near a stream; surrounding land
is moderately sloping. Plant does not appear to be in a flood
plain.

8. Location of nearest dwelling: Approximately 600 feet.
PART II - DESCRIPTION OF DISCHARGE AND TREATMENT WORKS
1. Existing treatment facility
a. What is the current permitted capacity of the facility?
0.009 MGD.
b. Date(s) and construction activities allowed by previous
Authorizations to Construct issued in the previous two
(2) years: None.
c What is the actual treatment capacity of the current
facility (design volume)? 0.009 MGD.
d. Please provide a description of existing or substantially
constructed wastewater treatment facilities: Existing
facility is a 9,000 gpd extended aeration package plant
consisting of a bar screen, aeration basin, clarifier,
aerated sludge holding tank, tablet chlorinator with
contact chamber and a 190 gallon post aeration tank.
2. Please provide a description of proposed wastewater treatment
facilities: The proposed construction project will include
partitioning of the existing chlorine contact chamber and
installation of a new chlorinator and a new de -chlorinator.
3. Residuals handling and utilization/disposal scheme:
a. If residuals are being land applied, please specify
DWQ Permit No.: N/A.
Residual Contractor: N/A.
Telephone No.: N/A.
b. Residuals stabilization: PSRP: N/A.
PFRP: N/A.
Other: N/A.
C. Landfill: N/A.
Authorization to Construct Staff Report
Version 10192
Page 2

d. other disposal/utilization scheme (specify): Sludge is
removed and transported by Liquid Wastes, Inc. to a CMUD
facility for final disposal.
4. Treatment plant classification (attach completed rating
sheet): Class II, see attached rating sheet.
5. SIC Code(s): 4952
Wastewater Code(s):
Primary: 05 Secondary:
Main Treatment Unit Code: 06007
6. Important SOC, JOC or Compliance Schedule dates: (please
indicate) N/A.
PART III - EVALUATION AND RECOMMENDATIONS
Pending final review and approval by the SERG, it is
recommended that an Authorization to Construct be issued to the
applicant as requested. Please note, no aeration device is allowed
in the chlorination unit.
�;� 6-'Z�
Signature Vf Report Preparer
(7)
Water Quality
Date
ional Supervisor
Authorization to Construct Staff Report
Version 10192
Page 3

NCO060755 Saddlewood Subdivision Gaston County
4/1/98 Received ATC request for the addition of dechlorination.
Package acknowledged and SR requested.
5/4 SR received. GT Chen, MRO, recommends issuance.
Facility wants to move the baffle in the existing chlorine contact chamber (volume will
be increased), install new chlorinator and dechlorinator units, and improve post aeration.
Chlorinator and dechlorinator — Eltech Model A200 or 1000 or equal.
New diffuser in the dechlorination tank. Wilfley Weber fine bubble diffuser, capacity = 7
efin. Existing diffusers in the expanded chlorination tank will be removed.
"Dispose of water according to DENR directions." - Item III. C. I of plans.
Engineer, Herbert Moore, says that the contractor will talk with the RO prior to disposing
of water.
5/28 Prepared package for issue 6/12/98. To DAG for review.