NC0023299_Authorization to Construct_19940315

State of North Carolina
Department of Environment,
Health and Natural Resources
Division of Environmental Management
James B. Hunt, Jr., Governor
Jonathan B. Howes, Secretary
A. Preston Howard, Jr., P.E., Director
March 15, 1994
Ms. Barbara C. Norcom, Director of Operations
Oakwood Land Development Corporation
Post Office Box 77013
Greensboro, North Carolina 27417-7013
Dear Ms. Norcom:
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Subject: Permit No. NC0023299
Authorization to Construct
Oakwood Land Development Corp.
Woodlake Mobile Home Park
Wastewater Treatment Facility
Guilford County
A letter of request for an Authorization to Construct was received September 3, 1993 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 a dual tertiary sand filter system and
ultraviolet disinfection system and the removal of the existing chlorine disinfection system with continued
discharge of treated wastewater into an unnamed tributary to Polecat Creek.
This Authorization to Construct is issued in accordance with Part III, Paragraph B of NPDES
Permit No. NC0023299 issued November 15, 1991, and shall be subject to revocation unless the
wastewater treatment facilities are constructed in accordance with the conditions and limitations specified in
Permit No. NC0023299.
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 Environmental Management.
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.
In conjunction with review of this Authorization to Construct request, the Division's Winston-Salem
Regional Office staff brought substantial compliance problems to our attention. Thus, you will be required
to conduct a thorough Alternatives Analysis in conjunction with your NPDES permit renewal (your
NPDES Permit expires on April 30, 1996). This analysis must include all available disposal options
including connection to the City of Greensboro sewer system (we have been advised that the City is
extending sewer service to the nearby Pleasant Garden area) and on -site disposal such as spray irrigation
or subsurface disposal. The analysis of on -site options must include an evaluation of actual site soils by a
soil scientist. This information is being included in this Authorization to Construct so that you can
consider conducting the Alternatives Analysis now and, if a suitable alternative is identified, perhaps urili7e
the resources allocated to this project to instead pursue the selected alternative. The Winston-Salem
Regional Office can assist you in identifying and evaluating all available alternatives.
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. NC0023299
Oakwood Land Development Corporation
Authorization to Construct
March 15, 1994
Page 2
The Winston-Salem 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 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.
A copy of the approved plans and specifications shall be maintained on file by the Permittee for the
life of the facility.
The sand media of the tertiary sand filter units must comply with the Division's sand
specifications. The engineer's certification will be evidence that this certification has been met.
Failure to abide by the requirements contained in this Authorization to Construct may subject the
Permittee to an enforcement action by the Division of Environmental Management 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. Dana J. Bolden, telephone number 919/733-
5083.
cc: Guilford County Health Department
Winston-Salem Regional Office, Water Quality Section
Training and Certification Unit

cc: Permits and Engineering
Technical Support Branch
County Health Department
Central Files
WSRO
SOC PRIORITY PROJECT: YES _ NO X
IF Yes, SOC No._
To: Permits and Engineering Unit
Water Quality Section
Attention: Dana Bolden (Review Engineer)
AUTHORIZATION TO CONSTRUCT
NPDES PERMIT REPORT AND RECOMMENDATIONS
Date: 930927
County: Guilford
Permit No. NC: NC0023299
PART I - GENERAL INFORMATION
1. Facility Name and Current Address: Barbara C. Norcom, Dir. of Ops.
Woodlake MHP
c/o Oakwood Land Dev. Corp.
2225 South Holden Rd.
PO Box 77013
Greensboro, NC 27417-7013
2. Date of most recent NPDES Staff Report: (attach copy) 900320
3. Changes since previous action on NPDES Permit: There have been complaints in
the area about odors and solids in the creek. Investigations have shown that solids have
been discharged into the creek and that the ORC had installed an aeration pump into the
creek. WSRO suspects inappropriate losses of solids; however, low flow conditions may
also be having an effect. No other changes or conceerns are known.
4. Verify Discharge Point(s) on plans with current NPDES Permit. List for all discharge
points.
Latitude: 35°58' 12" Longitude: 79°47'43"

Attach a USGS map extract and indicate treatment facility site and discharge point on
map.
U.S.G.S. Quad No. D19NE U.S.G.S. Name Pleasant Garden
5. Treatment plant classification: (attach completed rating sheet)
II
PART II - DESCRIPTION OF DISCHARGE AND TREATMENT WORKS
(PROVIDE THE FOLLOWING INFORMATION IF IT IS NOT ON THE PREVIOUS NPDES
STAFF REPORT)
1. Existing treatment facility
a. What is the current permitted capacity of the facility?
0.070 MGD
b. Date(s) and construction activities allowed by previous Authorizations to
Construct issued in the previous two (2) years:
None known.
c: What is the actual treatment capacity of the current facility (design volume)?
Unknown, averages about 0.045 MGD.
d. Please provide a description of existing or substantially constructed wastewater
treatment facilities. Influent pump station, parallel systems of 7-5,000 galon
aeration tanks, clarification tanks, tertiary filtration, aerated sludge holding tank,
gas chlorination, flow measurement and measurement with discharge pipe. Stand-
by portable power is available. Systems may be operated individually by ORC
in order to provide more sludge aeeration in the opposite system.
2. Please provide a description of proposed wastewater treatment facilities:
1. Pre -assembled continuous backwash countercurrently operated sand filter
w/ 7 sq. ft. of filtration area for effluent of less than 5.0 mg/1 TSS.
2. HD submersible pump for return to the influent wet well.
3. UV disinfection unit (30,000 uws/cm) for reduction of fecal coli to less
than 200/100 ml (geometric mean) with effluent pump. System will have
UV intensity monitoring and alarm.

3. Residuals handling and utilization/disposal scheme:
a. If residuals are being land applies, please specify DEM permit no.
Greensboro WWTP @ North Buffalo Creek (NPDES NC0024325)
Residual Contractor: Solids are supposed to be sent to a POTW by the ORC.
Telephone No. [phone]
b. Residuals stabilization: PSRP _ PFRP Other X
c. Landfill:
d. Other disposal/utilization scheme (Specify):
4. Important SOC, JOC or Compliance Schedule dates, if applicable: (Please indicate)
Submission of Plans and Specifications NA
Begin Construction NA
Complete Construction NA
PART III - EVALUATION AND RECOMMENDATIONS
WSRO recommends that the A2C be issued.
Signature of report preparer
,,'Water Quality Supervisor
?- L7-'25
Date

RATING SCALE fOR CLASSIFICATION OF FACILITIES
Name of Plant: ttiGc-// _ ,,27// '
Owner or Contact Person: ,D. a fps .
Mailing Address: , 2 . rT r? c i 3
C� ►- .e 1 rl.c �- c ru' - ? 5//2 7 0' i ___
County: f'�=c,:/, " Telephone: 9/ 9-2' 7 GW
NPDES Permit No. NC00.,73. 9 5 Nondisc. Per. No. •
IssueDate: is G / o / Expiration Date: 9f c V_?
Existing Facility 4c,2 c / a VNew Facility
Rated By: �J -/� , ,� ,•./Ie . Date: �; G' 2.2?
Reviewed (Train. & Cert.) Reg. Office
Reviewed (Train. & Cert.) Central Office
ORC ,.�.-nL,i Grade
/!-
Plant Class: (circle one) I (II ' / III
IV Total Points ‘z.,3
ITEM POINTS
(1) Industrial Pretreatment Units and/or
Industrial Pretreatment Program
(see definition No. 33) 4
(2) DESIGN FLOW OF PLANT IN GPO
(not applicable to non -contaminated cooling waters. sludge
handling facilities for water purification plants, totally
closed cycle systems (def. No. 11), and facilities
consisting only of Item (4) (d) or Items (4) (d) and (11) (d))
0 -- 20,000 1
20,001 — 50,000 2
sox, - 100,000 3
100.001 — 250,000
250,001 — 500,000 5
500,001—1.000,000 8
1.000.001 -- 2,000.000 10
2,000.001 (and up) - rate 1 point additional for each
200,000 gpd capacity up to a
maximum of 30
Design Flow (gpd) : 7�' o c' c+ -9per(
(3) PRELIMINARY UNITS (see definition nod 32)
(a) Bar Screens
Of
(b) Mechanical Screens. Static Screens or
Comminuting Devices
(c) Grit Removal
or
(d) Mechanical or Aerated Grit Removal
(e) Flow Measuring Device
or
(f) Instrumented Flow
(g) Peeaeration
1
2
1
2
1
Measurement
(h) Influent Flow•Equalization 2
(i) Grease or Oil Separators - Gravity 2
Mechanical 3
Dissolved Air Flotation. 8
(j) Prechtorination 5
(4) PRIMARY TREATMENT UNITS
(a) Septic Tank (see definition no. 43) 2
(b) Imhoff Tank 5
(c) Primary Clarifiers 5
(d) Settling Ponds or Settling Tanks for Inorganic
Non -toxic Materials (sludge handling facilities
for water purification plants. sand, gravel,
stone. and other mining operations except
recreational activities such as gem or gold
mining) 2
(5) SECONDARY TREATMENT UNITS
(a) Carbonaceous Stage
(i)Aeration - High Purity Oxygen System
Diffused Air System
Mechanical Air System (fixed,
floating or rotor) 8
Separate Sludge Reaeration 3
(ii) Trickling Filter
High Rate 7
Standard Rate 5
Packed Tower 5
(iii) Biological Aerated Filter or Aerated
Biological Filter 10
(iv) Aerated Lagoons 10
(v) Rotating Biological Contactors 10
20
(vi) Sand Filters -
intermittent biological 2
recirculating biological 3
(vrli) Stabilization Lagoons
(viii)Ciarifier
(ix) Single stage system for combined
carbonaceous removal of BOD and
nitrogenous removal by nitrification
(see def. No. 12) (Points for this item
have to be in addition to items (5) (a)
(i) through (5) (a) (vitli) 8
(x) Nutrient additions to enhance BOD
removal 5
(xi) biological Culture (-Super Bugs') addition
to enhance organic compound removal 5
(b) Nilrooenous Stage
(i) Aeration - High Purity Oxygen System 20
Diffused Air System 10
Mechanical Air System (fixed.
floating, or rotor) 8
Separate Sludge Reaeration 3
(ii) Trickling Filter -
High Rate 7
Standard Rate 5
Packed Tower 5
(iii) Biological Aerated Filter or Aerated
Biological Filter 10
(iv) Rotating Biological Contactors 10
(v) Sand Filter -
intermittent biological 2
recirculating biological 3
(vi) Clarifier 5
1.-t%

(6) TERTIARY OR ADVANCED TREATMENT UNIT
(a) Activated Carbons Beds -
without carbon regeneration 5
with carbon regeneration 15
(b) Powdered or Granular Activated Carbon Feed -
without carbon regeneration .. 5
with carton regeneration 15
(c) Air Stripping 5
(d) Denitrification Process (separate process) 10
(e) Electrodialysis .. 5
(Q Foam Separation 5
(g) lion Exchange 5
(h) Land Application of Treated Effluent
(see definition no. 22b) (not applicable for
sand. gravel. stone and other similar mining
operations)
(1) on agriculturally managed sites (See def.
No. 4) 10
(ii) by high rate infiltration on non -agriculturally
managed sites (includes rotary distributors
and similar fixed nozzle systems) 4
(iii) by subsurface disposal (includes low pressure
pipe systems and gravity systems except at
plants consisting of septic tank and nitrifica-
tion lines only) .. 4
Microszreens 5
Phosphorus Remoial by Biological Processes
(See def. No. 26)
(k) Polishing Ponds -
(i)
u)
20
without aeration 2
with aeration 5
(1) Post Aeration - cascade 0
diffused or mechanical ... 5
(m) Reverse Osmosis 5
(n) Sand or Mixed -Media Filters - low rate
high rate
(o) Treatment processes for removal of metal or
cyanide
(p) Treatment processes for removal of toxic
materials other than metal or cyanide
i SLUDGE TREATMENT
(a) Sludge Digestion Tank - Heated
Aerobic ......
Unheated
(b) Sludge Stabilization (chemical or thermal)
(c) Sludge Drying Beds - Gravity
Vacuum Assisted
(d) Sludge Elutriation
(e) Sludge Conditioner (chemical or thermal)
(1) Sludge Thickener (gravity)
(g) Dissolved Air Flotation Unit
(not applicable to a unit rates as (3) (i) 8
(h) Sludge Gas Utilization (including gas storage) .... 2
(i) Sludge Holding Tank - Aerated
Non -aerated 2
(j) Sludge incinerator - (not including activated
carbon regeneration) 10
(k) Vacuum Filter. Centrifuge or Filler Press or other
similar dewatering devices 10
SLUDGE DISPOSAL (including incinerated ash)
(a) Lagoons 2
(b) Land Application (surface and subsurface)
(see definition 22a)
-where the facility holds the Land app. permit ... 10
-by contracting to a land application operator who
holds the land application permit 2
-land application of sludge by a contractor who doe
not hold the permit for the wastewater treatment
facility where the sludge is generated 10
(c) Landlilled (burial) 5
DISINFECTION
(8)
(9)
15
(t 0) •CHEMICAL ADDITION SYSTEM (S) (See definition No. 9)
(not applicable to chemicai additions rated as item
(3) (j). (5) (a) (xi). (6) (a). (6) (b): (7) (b). (7) (e).
(9) (a). (9) (b). or (9) (c) 5 points each: List:
5
5
5
5
(11) MISCELLANEOUS UNITS
(a) Holding Ponds. Holding Tanks or Settling Ponds
for Organic or Toxic Materials including wastes
from mining operations containing nitrogen and/or
phosphorous compounds in amounts significantly
greater than is common for domestic wastewater 4
(b) Effluent Flow Equalization (not applicable to storage
basins which are inherent in land application systems)2
(c) Stage Discharge (not applicable 10 storage basins
inherent in land application systems
(d) Pumps.».....»._.»...».._...........»._._.....»»»...».».»_._....._.__.,..»(
(e) Stand -By Power Supply.......... .......... ......
(f) Thermal Pollution Control Device
TOTAL POINTS •3 r
CLASSIFICATION
Cr ........ .».....».... »_..».... 5 - 25 Points
... .._ 26- 50 Points
Class IV._.........................____._ 66- Up Points
Facilities having a rating of one through four points. inclusive,
do not require a certified operator. Classification of all other
facilities requires a comparable grade operator in responsible
charge.
15 Facilities having an activated sludge process will be assigned
a minimum classification of Class 11.
(a) Chlorination
(b) Dechiorinalion
(c) Ozone
(d) Radiation
5
2
5
5
5
5
Facilities having treatment processes for the removal of metal
or cyanide will be assigned a minimum classification of Class It.
Facilities having treatment processes for the biological removal
of phosphorus will be assigned a minimum classification of Class
111.
in -plant processes and related control equipment which are an
integral part of industrial production shall not be considered waste
treatment. Likewise. discharges of wastewater from residences
having a design flow of 1.000 gpd or less. shall not be subject to
rating.
ADDITIONAL COMMENTS;
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