NC0031577_AUTHORIZATION TO CONSTRUCT_19970722

NPDES DOCYNENT SCANNINK COVER SNEET
NPDES Permit:
NCO031577
White Oak Estates WWTP
Document Type:
Permit Issuance
Wasteload Allocation
Authorization to Construct
(AtC)�= 'r
Permit Modification
Complete File - Historical
Correspondence
Speculative Limits
Instream Assessment (67b)
Environmental Assessment (EA)
Permit
History
Document Date:
July 22, 1997
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State of North Carolina
Department of Environment,
Health and Natural Resources
Division of Water Quality
James B. Hunt, Jr., Governor
Jonathan B. Howes, Secretary
A. Preston Howard, Jr., P.E., Director
July 22, 1997
Mr. L. T. Mercer, Jr.
Mercer Environmental Corporation
1117 Gum Branch Road
Jacksonville, North Carolina 28540
Dear Mr. Mercer:
Alva
EDEHNR
Subject: NPDES Permit No. NC0031577
Authorization to Construct
White Oak Estates Expansion
Onslow County
A letter of request for an Authorization to Construct was received September 12, 1996 by the Division 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 additional wastewater treatment facilities with a design flow of 0.1 MGD consisting of a
30,000 gallon flow equalization basin, a 150,000 gallon fine bubble aeration basin, a 19,974.gallon secondary clarifier, a
15,000 gallon sludge holding tank, a dual bed tertiary filter, a 2,098 gallon chlorine contact basin with gas chlorination and
all piping and appurtenances with final discharge of treated effluent into Northeast Creek in the White Oak River Basin.
This Authorization to Construct is issued in accordance with Part III, Paragraph A of NPDES Permit No.
NC0031577 issued July 21, 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. NC0031577.
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 Wilmington 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, a certification 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 Permits and
Engineering Unit, P.O. Box 29535, Raleigh, NC 27626-0535.
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
P.O. Box 29535, Raleigh, North Carolina 27626.0535 Telephone [phone] FAX [phone]
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Permit No. NC0031577
Authorization to Construct
White Oak Estates WWTP
July 22, 1997
Page 2
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 II, III, 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 Permittee for 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 complying with 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 Mr. Mark McIntire, telephone number [phone], extension 553.
Sincerely,
Preston Howard, Jr., P.E.
cc: Central Files
Permits'& -Engineering (Permit fle),,
Wilmington Regional Office, Water Quality
Training and Certification Unit
Parker &• Associates, Incd Tim Stewart, P.E.

To: Permits and Engineering Unit P�
Water Quality Section
Date: December 5, 1996
AUTHORIZATION TO CONSTRUCT
NPDES PERMIT
REPORT AND RECOMMENDATIONS
County: Onslow
Permit No. ACB031577 Noor,TN'c7"s� U'c"r�v
PART I - GENERAL INFORMATION
1. Facility and Address:
White Oak Estate
Mercer Environmental
1117 Gum Branch Road
Jacksonville, North Carolina 28540
2. Date of Investigation: November 13, 1996
3. Report Prepared by:. Pat C. Durrett
4. Persons Contacted and Telephone Number:
Jonh Parker, Parker and Assoc. [phone]
5. Directions to Site: Travel North from jacksonville on U.S
Highway 17 to the Pumpkin Center crossroads, turn right
heading SE on NCSR 1406. Travel for approximately 2.8 miles
(Just passing White Oak High School) to White Oak Blvd.
Turn right onto White Oak Blvd, travel approximately 0.8
mile to the end (cul-de-sac). Follow the gravel road
between house numbers 227 and 240.
3
Discharge Point: Latitude:
7. Size: NA
Longitude:
340 45' 15"
770 21' 15"
USGS Quad Sheet: H 29 SE Kellum NC

8. Topography: The facility is located on a gently downward
sloping site with an elevation approximately 5' above MSL.
9. Location of nearest dwelling: There are houses
approximately 300' from the plant site.
PART II - DESCRIPTION OF DISCHARGE AND TREATMENT WORKS
1. Existing treatment facility:
a. What is the current permitted capacity of the facility?
0.12 MGD with expansion to 0.22 MGD
b. Date 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? 0.120 MGD
d. Description of existing treatment facility: The
existing 0.120 MGD facility consists of two flow
equalization basins with a total volume of 40,000
gallons , flow splitter box, three 40,000 gpd aeration
basins, three clarifiers, tertiary filters chlorination
sludge digesters, flow recording, phosphorus removal,
and post aeration.
2. Description of proposed treatment facility: The project
consists of constructing an additional 100,000 GPD treatment
train containing the following components: 30,000 gallon
flow equalization basin, 100,000 gallon aeration basin
(actual volume is 140,698 gallons), 19,900 gallon clarifier,
tertiary filters, chlorination and a 15,000 gallon sludge
holding basin.
3. Residuals handling .and utilization/disposal scheme: Sludge
is stored in an aerated sludge holding basin, treated to
meet PSRP, and disposed of by land application.
a. If residuals are being land applied, please specify DEM
permit no. WO0005859
Residual Contractor:_ Mercer Environmental Corp
Telephone Number: [phone]

C!
5
9
b. Residuals stabilization:
Treatment plant classification:
SIC Code: 4952
PSRP X PFRP
Class "III" Plant
Wastewater Codes: Primary: 05 Secondary: 03
Main Treatment Unit Code: 06103
Important SOC, JOC, or Compliance Schedule dates: N/A
PART III - EVALUATION AND RECOMMENDATIONS
The Wilmington Regional Office has completed it's review of
the plans and specifications for the additional treatment train.
The following concerns were noted during the review:
1. The clarifier indicates a side water depth of 8.5 feet at
the lowest point. For consistent operation a minimum side
water depth of 10 feet should be required.
2. Stricter limits should be imposed for ammonia and phosphorus
due to the nutrient sensitive water classification of the
discharge point. Additional phosphorus may need to be
removed which may require more chemical addition and
additional sludge generation. This being the case, more
sludge holding capacity may be needed.
3. All flow will exit the plant in the existing flow box. The
ability of the meter and box to handle the additional flow
has not been shown. Proper weir size should be provided in
order to provide reliable flow data.
4. In the event that the City of Jacksonville annexes the area,
then we should require that the discharge be ceased at the
earliest possible date and that they connect to the City's
land application system.

It is recommended that Authorization to Construct No.
ACB031577 for the additional train be issued pending the
resolution of the above items.
gnature Af Repor Preparer
Regional Supervisor
�L/YJ
Date
PD:ACB31577.SR
cc: Wilmington Regional Files
Technical Support Branch
Central Files