WQ0015052_Final Permit_19980824

State of North Carolina
Department of Env)`ropment
and Natural Resources
Division of Water Quality
f
James B. Hunt, Jr., Governor
Wayne McDevitt, Secretary
A. Preston Howard, Jr., P.E., Director
August 24, 1998
Gerald Friedman, President
Corolla North Utilities, Inc.
PO Box 1068
Kitty Hawk, NC 27949
1 � •
NCDENR
NORTH CAROLINA DEPARTMENT OF
ENVIRONMENT AND NATURAL RESouRcEs
Subject: Permit No. WQ0015052
Corolla North Utilities, Inc.
Wastewater Treatment and Reclaimed
Water Utilization System
Currituck County
Dear Mx, Friedman:
In accordance with your application received March 4, 1998 we are forwarding herewith Permit
Number. WQ0015052 dated August 17, 1998 to Corolla North Utilities, Inc. for the construction and operation
of the subject wastewater treatment reclaimed water utilization system.
This permit shall be effective from the date of issuance until July 31, 2003 and shall be subject to the
conditions and limitations as specified therein. Please pay particular attention to the monitoring requirements
in this permit. Failure to establish an adequate system for collecting and maintaining the required operational
information will result in future compliance problems.
If any parts, requirements, or limitations contained in this permit are unacceptable, you have the right to
request an adjudicatory hearing upon written request within thirty (30) days following receipt of this permit.
This request must 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, P.O. Drawer. 27447, Raleigh, NC
27611-7447. Unless such demands are made this permit shall be final and binding.
One set of approved plans and specifications is being forwarded to you. If you need additional
information concerning this matter, please contact Sue Homewood;at K
5083 extensi n 502.
Sinc�
A. Preston Howard, Jr., P.E.
cc: Currituck County Health Department
Washington Regional Office, Water Quality Section
Washington Regional Office, Groundwater Section
Bob Cheek, Groundwater Section, Central Office
Technical Assistance and Certification Unit
Non -Discharge Compliance/Enforcement Unit
PO Box 29535, Raleigh, North Carolina 27626-0535 Telephone [phone] Fax [phone]
An Equal Opportunity Affirmative Action Employer 50% recycled/10% post -consumer paper

NORTH CAROLINA
ENVIRONMENTAL MANAGEMENT COMMISSION
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
RALEIGH
WASTEWATER TREATMENT AND RECLAIMED WATER UTILIZATION PERMIT
In accordance with the provisions of Article 21 of Chapter 143, General Statutes of North Carolina as
amended, and other applicable Laws, Rules, and Regulations
PERMISSION IS HEREBY GRANTED TO
Corolla North Utilities, Inc.
Currituck County
FOR THE
construction and operation of a 100,000 GPD wastewater treatment and reclaimed water utilization system
consisting of one flow splitter box, one manually cleaned bar screen, one 30,000 GPD flow equalization tank,
one 151 cfm blower, two 69 GPM pumps, two 62,500 gallon coarse bubble aeration basins, three 10,500
gallon clarifiers, two 6,000 gallon aerated sludge holding tanks, two 21 square foot tertiary filters, three 270
cfm blowers, one tablet chlorinator with a 3190 gallon contact tank, one 7440 gallon dosing and the continued
operation of a 64,000 GPD wastewater treatment and reclaimed water utilization system consisting of one
10,000 gallon flow equalization tank with a 142 cfm blower and two 42 GPM pumps, one flow splitter box,
two 40,000 gallon coarse bubble aeration basins, four 10,700 gallon clarifiers, one 6,000 gallon aerated sludge
holding tank, three 142 cfm blowers, two 28 square foot tertiary filters, one tablet chlorinator with 2500 gallon
contact tank, one 4000 gallon dosing tank, one 20,000 square foot spray bed, 516,000 square feet "green area"
one 3.2 million gallon irrigation pond, 12.1 acres of spray field (common area) to serve 299 lots at 533 gallons
per day per lot with no discharge of wastes to the surface waters, pursuant to the application received March 4,
1998 and in conformity with the project plan, specifications, and other supporting data subsequently filed and
approved by the Department of Environment and Natural Resources and considered a part of this permit.
This permit shall be effective from the date of issuance until duly 31, 2003 and shall be subject to the
following specified conditions and Iimitations:
I. PERFORMANCE STANDARDS
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 this permit, the approved plans and specifications, and other
supporting materials. If this project is to be completed in phases and partially certified, you shall
retain the responsibility to track further construction approved under the same permit, and shall
provide a final certificate of completion once the entire project has been complete . Mail the
Certification to the Non -Discharge Permitting Unit, P.O. Box 29535, Raleigh, NC 27626-0535.

2. The Washington Regional Office, telephone number 252-946-6481 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.
3. The reclaimed water utilization facilities shall be effectively maintained and operated at all times
so that there is no discharge to the surface waters, nor any contamination of ground waters which
will render them unsatisfactory for normal use. In the event that the facilities fail to perform
satisfactorily, including the creation of nuisance conditions or failure of the irrigation area to
adequately assimilate the wastewater, the Permittee shall take immediate corrective actions
including those actions that may be required by the Division of Water Quality (Division), such as
the construction of additional or replacement wastewater treatment and disposal facilities.
4. The issuance of this permit shall not relieve the Permittee of the responsibility for damages to
surface or groundwaters resulting from the operation of this facility.
The residuals generated from these treatment facilities must be disposed in accordance with
General Statute 143-215.1 and in a manner approved by the Division.
6. Diversion or bypassing of the untreated wastewater from the treatment facilities is prohibited.
7. The following buffers shall be maintained:
a) 100 feet between wetted areas and water supply wells,
b) 100 feet between wetted areas and waters classified as SA,
c) 25 feet between wetted areas and surface waters not classified as SA,
d) 100 feet between wastewater treatment units and wells,
e) 50 feet between reclaimed water storage/irrigation ponds and property lines, and
f) 50 feet between wastewater treatment units and property lines.
Public access to the irrigation sites shall be controlled during active site use. Such controls may
include the posting of signs showing the activities being conducted at each site. A sign shall be
posted in plain sight in the club house showing these activities.
11. OPERATION AND MAINTENANCE REQUIREMENTS
I . The facilities shall be properly maintained and operated at all times.
2. Upon classification of the facility by the Water Pollution Control System Operators Certification
Commission (WPCSOCC), 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 WPCSOCC. The Permittee must also
employ a certified back-up operator of the appropriate type and grade to comply with the
conditions of 15A NCAC 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 15A NCAC 8A .0202. Once the facility is classified, the
Permittee must submit a letter to the WPCSOCC which designates the operator in responsible
charge within thirty days after the wastewater treatment facilities are 50% complete.
3. A suitable, year-round vegetative cover shall be maintained on the irrigation areas.
2

4. Irrigation shall not be performed during inclement weather or when the ground is in a condition
that will cause runoff.
5. Adequate measures shall be taken to prevent wastewater runoff from the spray field.
6. The facilities shall be effectively maintained and operated as a non -discharge system to prevent
the discharge of any wastewater resulting from the operation of this facility.
7. The application rate shall not exceed three inches per week.
8. No type of wastewater other than that from the residential subdivision shall be sprayed onto the
irrigation area.
9. All wastewater shall be routed to the rapid infiltration spray bed should the limit for fecal coliform
(daily maximum concentration of 25 per 100 ml) or turbidity (instantaneous maximum of 10
NTU) be exceeded, until such time that the problems associated with the treatment capability of
the wastewater treatment plant have been corrected.
III. MONITORING AND REPORTING REQUIREMENTS
1. Any monitoring (including groundwater, surface water, soil or plant tissue analyses) deemed
necessary by the Division to insure surface and ground water protection will be established and an
acceptable sampling reporting schedule shall be followed.
2. As an indicator of proper operation and maintenance, the facility shall produce an effluent in
compliance with the following limitations:
Parameter Monthly Average a
vera ea Dail Instantaneous Maximum
Flow 160,000 GPD
BOD5 (5-day, 20°C) 10 mg/l 15 mg/l
NH3 as N 4 mg/l 6 mg/1
TSS 5 mg/l 10 mg/1
Fecal Coliform 14 per 100 ml b 25 per 100 ml
Turbidity 10 NTU
a Monthly averages for all but fecal coliform shall be the arithmetic mean of all samples
collected during the reporting period.
b
Monthly average for fecal coliform shall be the geometric mean of all samples collected during
the reporting period.
t Daily maximum shall be the maximum value of all samples collected during the reporting
period.
3

The effluent from the subject facilities shall be monitored, by the Permittee, at the point prior to
discharge to the irrigation pond for the following parameters:
Parameter
Sampling Point
Sampling Frequency
Type of Sample
Flow
Influent or Effluent
Continuous
Recording
Turbidity
Effluent
Continuous
Recording
BOD5 (5-day, 20°C)
Effluent
*2/Month
Composite
NH3 as N
Effluent
*2/Month
Composite
TSS
Effluent
*2/Month
Composite
Fecal Coliform
Effluent
*2/Month
Grab
Settleable Matter
Effluent
Daily
Grab
NO3
Effluent
**Triannually
Grab
TDS
Effluent
**Triannually
Grab
TOC
Effluent
Triannually
Grab
Chloride
Effluent
*Triannually
Grab
The effluent pH shall not be less than 6.0 standard units nor greater than 9.0 standard units.
* 2/Month sampling frequency only during the months of April through October. During the
remainder of the year, these parameters shall be monitored monthly.
** Triannually sampling shall be conducted during March, July, and November.
If Groundwater sampling indicates or predicts problems with the compliance with Groundwater
Standards, this permit will be modified to include additional and/or more restrictive limitations.
3. Adequate records shall be maintained by the Permittee tracking the amount of wastewater
disposed. These records shall include, but are not necessarily limited to the following
information:
a. date and time of irrigation,
b. volume of wastewater irrigated,
c. zone irrigated,
d. length of time zone is irrigated,
e. continuous weekly, monthly, and year-to-date hydraulic (inches/acre) loadings for each zone,
f. weather conditions, and
g. maintenance of cover crops.
4. Three (3) copies of all operation and disposal records (as specified in condition III 3) on Form
NDAR-1 shall be submitted on or before the last day of the following month. Three (3) copies of
all effluent monitoring data (as specified in condition 11I 2) on Form NDMR-1 shall be submitted
on or before the last day of March, July, and November. All information shall be submitted to the
following address:
NC Division of Water Quality
Water Quality Section
Non -Discharge Compliance/Enforcement Unit
Post Office Box 29535
Raleigh, North Carolina 27626-0535
4

5. A record shall be maintained of all residuals removed from this facility. This record shall include
the name of the hauler, permit authorizing the disposal or a letter from a municipality agreeing to
accept the residuals, date the residuals were hauled, and volume of residuals removed.
6. A maintenance log shall be maintained at this facility including but not limited to the following
items:
a. Daily sampling results including residual chlorine, settleable matter, and dissolved oxygen in
the aeration basin and at the clarifier weir.
b. Visual observations of the plant and plant site.
c. Record of preventative maintenance (changing of filters, adjusting belt tensions, alarm testing,
diffuser inspections and cleanings, etc.).
d. Date of calibration of flow measurement device.
e. Date and results of power interruption testing on alternate power supply.
7. Noncompliance Notification:
The Permittee shall report by telephone to the Washington Regional Office, telephone number
252-946-6481 as soon as possible, but in no case more than 24 hours or on the next working day
following the occurrence or first knowledge of the occurrence of any of the following:
a. Any occurrence at the wastewater treatment facility which results in the treatment of
significant amounts of wastes which are abnormal in quantity or characteristic, such as the
dumping of the contents of a sludge digester; the known passage of a slug of hazardous
substance through the facility; or any other unusual circumstances.
b. Any process unit failure, due to known or unknown reasons, that render the facility incapable
of adequate wastewater treatment such as mechanical or electrical failures of pumps, aerators,
compressors, etc.
c. Any failure of a pumping station, sewer line, or treatment facility resulting in a by-pass
directly to receiving waters without treatment of all or any portion of the influent to such
station or facility.
d. Any time that self -monitoring information indicates that the facility has gone out of
compliance with its permit limitations.
Persons reporting such occurrences by telephone shall also file a written report in letter form
within five (5) days following first knowledge of the occurrence. This report must outline the
actions taken or proposed to be taken to ensure that the problem does not recur.
IV. GROUNDWATER REQUIREMENTS
1. Prior to beginning waste disposal operations with the new system, existing Monitor Well MW-1
shall be abandoned in accordance with 15A NCAC 2C .0113.
2. Any additional groundwater quality monitoring, as deemed necessary by the Division, shall be
provided.
E

The COMPLIANCE BOUNDARY and REVIEW BOUNDARY for the disposal system is
specified by regulations in 15A NCAC 2L, Groundwater Classifications and Standards. For
disposal systems using reclaimed water, regulation 15A NCAC 2H .0219(k) specifies that both the
Compliance Boundary and Review Boundary are established at the property boundary. An
exceedance of Groundwater Quality Standards at or beyond the Compliance Boundary is subject
to immediate remediation action in addition to the penalty provisions applicable under General
Statute 143-215.6A(a)(1).
V. INSPECTIONS
1. Adequate inspection, maintenance, and cleaning shall be provided by the Permittee to insure
proper operation of the subject facilities.
2. The Permittee or his designee shall inspect the wastewater treatment and disposal facilities to
prevent malfunctions and deterioration, operator errors and discharges which may cause or lead to
the release of wastes to the environment, a threat to human health, or a nuisance. The Permittee
shall keep an inspection log or summary including at least the date and time of inspection,
observations made, and any maintenance, repairs, or corrective actions taken by the Permittee.
This log of inspections shall be maintained by the Permittee for a period of three years from the
date of the inspection and shall be made available upon request to the Division or other permitting
authority.
Any duly authorized officer, employee, or representative of the Division may, upon presentation
of credentials, enter and inspect any property, premises or place on or related to the disposal site or
facility at any reasonable time for the purpose of determining compliance with this permit; may
inspect or copy any records that must be maintained under the terms and conditions of this permit,
and may obtain samples of groundwater, surface water, or leachate.
VI. GENERAL CONDITIONS
This permit shall become voidable unless the facilities are constructed in accordance with the
conditions of this permit, the approved plans and specifications, and other supporting data.
2. This permit is effective only with respect to the nature and volume of wastes described in the
application and other supporting data.
This permit is not transferable. In the event there is a desire for the facilities to change ownership,
or there is a name change of the Permittee, a formal permit request must be submitted to the
Division accompanied by an application fee, documentation from the parties involved, and other
supporting materials as may be appropriate. The approval of this request will be considered on its
merits and may or may not be approved.
4. Failure to abide by the conditions and limitations contained in this permit may subject the
Permittee to an enforcement action by the Division in accordance with North Carolina General
Statute 143-215.6A to 143-215.6C.
The issuance of this permit 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.
6. A set of approved plans and specifications for the subject project must be retained by the Permittee
for the Iife of the project.

A set of approved plans and specifications for the subject project must be retained by the
Permittee for the life of the project.
The annual administering and compliance fee must be paid by the Permittee within thirty days
after being billed by the Division. Failure to pay the fee accordingly may cause the Division to
initiate action to revoke this permit as specified by 15 NCAC 21-1.0205 (c)(4).
The Permittee, at least six (6) months prior to the expiration of this permit, shall request its
extension. Upon receipt of the request, the Commission will review the adequacy of the facilities
described therein, and if warranted, will extend the permit for such period of time and under such
conditions and limitations as it may deem appropriate.
Permit issued this the 24th day of August 1998
NORTH C LINA E 7ONMEN7AL MANAGEMENT COMMISSION
, -A. Preston Howard, Jr., P.E., Director
Division of Water Quality
By Authority of the Environmental Management Commission
Permit Number WQ0015052

Permit No. WQ0015052
August 24, 1998
ENGINEER'S CERTIFICATION
Partial Final
I, , as a duly registered Professional Engineer in the State of
North Carolina, having been authorized to observe (periodically, weekly, full time) the construction of the
project,
Project Name
.Location and County
for the Permittee hereby state that, to the best of my abilities, due care and diligence was used in the
observation of the construction such that the construction was observed to be built within substantial
compliance and intent of this permit, the approved plans and specifications, and other supporting materials.
Signature
Date
Registration No.

Telephone.;
Classification: New Facility Existing Facility
Per. No. NC00 Nondisc. Per. No.WC�_ 15� Health Dept.Per No.
Rated by: Telephone: _
Reviewed by- Health Dept.
Regional Office
RATING SCALE FOR CLASSIFICATION OF WATER POLLUTION CONTROL SYSTEMS
Name of F
Owner or
Mailing Ac
County:
Present
NPDES
Date:
Telephone:
Telephone:
Telephone:
ORC: Grade: Telephone:
Check Classification(s): Subsurface Spray Irrigation and Application
Wastewater lassffication: (Circle One) 1 11 lit IV Total Points:144
00WIDERED WASTE TREATMENT FOR THE PURMEQECLAS$FrATK)N.ALWSEPMIA%a)aMdaQ2�2ONG OMYOFSEFTIC TANK
SUBSURFACE Ct.AS.SIMCATK)N
(check all units that apply)
1. septic tanks
2. pump tanks
3. siphon or pump -dosing systems
4. sand filters
5_ grease trapinterceptor
6. oil/water separators
7. _gravity subsurface treatment and disposal:
8. pressure subsurface treatment and disposal:
Central Office
SPRAY IRRIGATION CLA5SOCATON
(check all units that apply)
1,.
preliminary treatment (definition no. 32 )
2.
lagoons
3.
septic tanks
4.
pump tanks
5.
pumps
6.
sand filters
7.
grease trap/interceptor
8.
oil/water separators
9.
disinfeclion
10.
chemical addition for nutrientlalgae control
11.
spray irrigation of wastewater
In addition to the abode classifications, pretreatment of wastewater in excess of these components shall
be rated using the point rating system and will require an operator with an appropriate dual certification.
LAND APPLICATIONMESIDUALS CLASSIFICATION (Applies only to permit holder) .
1. Land application of biosolids, residuals or contaminated soils on a designated site.
WASTEWATER TREATMENT FACILITY CLASSIFICATION
The following systems shall be assigned a Class I classification, lld1e-s the flow is of a significant quantity or the technology is unusually
complex, to require consideration by the Commission on a case -by -case basis: (Check if Appropriate)
1. Oiffwater Separator Systems consisting only of physical separation, pumps and disposal;
2. Septic Tank/Sand Filter Systems consisting only of septic tanks, dosing apparatus, pumps,sand filters, disinfection
and direct discharge;
3. Lagoon Systems consisting only of preliminary treatment, lagoons, pumps, disinfecion, necessary chemical treatment for
algae or nutrient control, and direct discharge;
4- Closed -loop Recycle Systems;
5. Groundwater Remediation Systems consisting only of oillwater separators, pumps, air -stripping, carbon adsorption, disinfection
and disposW;
6. Aquacufture operations with discharge to surface waters;
7. ,._Water Plant sludge handling and back -wash water treatment;
8. Seafood processing consisting of screening and disposal.
9. Single-family discharging systems, with the exoeption of Aerobic Treatment Units, will be classified K permitted after July 1,
1993 or N upon Inspection by the Division, it is found that the system is not being adequately operated or maintained. Such
systems will be notified of the classification or reclassification by the Commission, in writing.

The following scale is used for rating wastewater treatment facilities: (circle appropriate points)
ITEM POINTS
(1) Industrial Pretreatment Units or Industrial Pretreatment Program (see deilnhlon No. 33)...................................................4
(2) DESIGN
FLOW OF PLANT IN gpd [rot applicable to non-contandnated cooing waters, sludge handling facilities for
water purification
plants, totally closed cycle sysloms(see definition No. 11), and facilities consisting only of hem
(4)(d) or
Items (4)(d) and (11)(d)]
0 - 20,000.....................................................................................:..........................................................1
20.001 -'S0,000................................ ................................................._....................................................2
50.001 - 100�Doo....................................................... .............. ........ .......................................I ............ ..._ 3
100,001 25 0, 00 0.........................................................................................................I...... _............ .
250,001 - 500,000.................................................................................................................................
500.001 - 1,000,000................................................................................................................................a
1,000.001 - 2,000,000..........................................................................................................................110
2,D00.001 (and up) rate 1 point additional for each 200.000 gpd capacity up to a maximum of .................30
Design Flow (gpd]
(3) PRELIMINARY LINITSIPROCESSES (see definition No.32)
(a) Bar Screens..........................................................................................................................................�1
or
(b)
Mechanical Screens, Static Screens or Comminuting Devices..........................................................................2
(0)
GA Removal..............................................................................................................................................1
or
(d)
Mechanical or Aerated Grit Removal.............................................................................................. .........2
(e)
Flow MeasurkV Device............................................................................................ ...........1
(f)
or
Instrumented Flow Measurement.......................................................................................
(g)
Preaeratlon..............................................................................................................................................
(h)
Influent Flow Equalization...................................................................................................................... ..2
(1)
Grease or Oil Separators - Gravity.................................................................................................................
Mechanicai................................................................................................................................................3
Dissolved Alr Fkxallon................................................................................................................................a
(I)
Prechlorination.........................................................................................................................................5
(4) PRIMARYTREATMEXTWfiSIPRDCESSES
(a)
Septic Tank (see definition No_ 43)............................................................................................................2
(b)
Imhoff Tank...............................................................................................................................................5
(c)
Primary Ciargiers..........................................................................................................................................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 rocreat'wnal activities such as gem
orgold mining)........................................................................................................................................2
(5) SECONDARY TREATMENT LUTSIPROCESSES
(a)
Carbonaceous Stage
(1) Aeration -High Purity Oxygen System............................................................................
DiffusedAir System................................................................................................ ....1 0
Mechanical Air System (fixed, floating or rotor) ...... ..........................................................
Separate Sludge Reaerallon............................................................................................3
(11) Triddhg Filter
HighRate......................................................................................................................7
StandardRate...............................................................................................................J5
PackedTower................................................................................................................5
(ill) Biological Aerated Finer or Aerated Biological Filter........._.....__._.......................................10
(Iv) Aerated lagoons..........................................................................................................10
(v) Rotating Biological Contactors......................................................................................10
(VI) Sand Filters -Intermittent biological. ......... . ...... ___ ........................... . ............................ 2
Recirculatingbiological ...... ................................................ »....................................... .....3
(vll) Stabilization Lagoons....................................................................................................4
(vlii) Clarifier ........... .............................. ...................................................... ........ I ............ . ..5
(ix) Single stage system for combined carbonaceous removal of SOD and nitrogenous removai y
n1fdrication (see definition No. 12)(Points for this Rem have to be in addition to Items
(5)(a)(i) through (5)(a)(viii),
utilizing the extended aeration process (see definition No.3a).....................................�
utilizing other than the extended aeration process. ..............................................
(x) NuWant addrtfons to enhance BOD removal.....................................................................AS
(x1) Biological Culture ('Super Bvgs')addition.......................................................................S
(b)
Nitrogenous Stage
(1) Aeration - High Purity Oxygen Syatem..........»..........................................................20
Ditfusad Air System.......................................................................................................1 0
Mechanical Air System (fixed. floating or rotor) .......... ...... ..,....... ... ......... »......... .............. 8
SeparateSludge Reaeration............................................................................................3
(11) Trickling Fllter--High Rate...................................................................................................7
Standard Rate...............................................................................................................5
PackedTower.................................................................................................................5
(lit) Biological Aerated Finer or Aerated Biological Flhar.... »......»».... ................»..10
(iv) Rotating Biological Contactors................................................................................10
(v) Sand Finer- Intermittent bWogkal..................................................................................2
Recirculating biological....................................................................................................3
(vi) Clarifier ................................................................................................5
........................... .
(S) TEATAWORADNANCEDTREATME TLNn51PROCESSES
(a)
Activated Carlson Beds -
without carbon regeneration.................................................................................................. S
withcarbon regeneration...........................................................................................15
(b)
Powdered or Granular Activated Carbon Feed -
withoutcarbon regeneration................................................................................................5
withcarbon regeneratlon.....................................................................................................16
(c)
Air stripping.................................................................................................................................... .5
(d)
Denitrfiicatlon Process..............................................................................................................................10
(a) Electrodfalysis............... ....... »....... ........................................................................ ....»...... ..........................
(f ) Foam Separation........................................................................»............................................................S
(9) Ion Exchange ..... ..... ............. ........ .... .. ... ........... ...... .......................5
(h) Land Applicatlon of Treated Effluent (see definition No. 22b) (not applicable for sand, gravel, storm
and other similar mining operations) by high rate Rtfinratlon........................ .......................... _..... tr
(I) Microscreens......... .. .......... ....................... . ... ..........................................................».........
()) Phosphorous Removal by Biological Processes (See definition No. 26)........................................................20
(k) Polishing Ponds without aeration............................................................................................................2
with aaration.... ....... ............................ ..»............................................ ....... .......... 5

(1) Post Aeration - cascade..............................................................................................................................0
diffused or mechanical........................................................................................................2
(m) Reverse Osmosis........................................................................................................................................5
(n) Sand or Mixed -Media Filters - low rate...................................................................................................e
highrate....................................................................
(o) Treatment processes for removal of metal or cyanide..............................................i....................................15
( p ) treatment processes for removal of toxic materials other than metal or cyanide..............................................15
(7) SLUDGETRFJ+,IVENT
(a) Sludge Digestion Tank - Heated (anaerobic}................... 10
...........................................................................
Aerobic .............. ..............................................................................................I...........I....,..........
.....
Unhealed(anaerobic)...........................................................................................................................
(b) Sludge Stab ilizallon (chemical or ftrrtal)....................................................................................................5
(c) Sludge Drying Beds -Gravity ......................................................................................................................2
VacuumAssisted......................................................................................................................................5
(d) Sludge Eluirlation.....................................................................................................................................5
(e) Sludge Conditioner (chemical at thermal) ....................................... 5
(1) Sludge Thickener (gravity)..................................................................................... ...............................5
(9) Dissolved Air Flotation Unit (not applicable to a unit rated as(3)(1)].............................................................8
(h) Sludge Gas Utilization (including gas storage)..............................................................................................2
(1) Sludge Holding Tank - Aerated...................................................................................................................5
Non -aerated ........ .. ....... ... ...............................................................................2
(() Sludge Incinerator (not Including activated carbon regeneration)........................................................ ........ 10
(k) Vacuum Fifter, Centrifuge, or Ffter Press or other similar dewater;ng devices...................................................10
(8) RESIDUALS UTILIZATIONIDISPOSAL (induding incinerated ash)
(a) Lagoons .............. ............................................................................,................_..2
(b) Land Application (surface and subsurface) (see definition 22a)
by contracting to a land application operator or landfill operator who holds the land application permit
orlandfill permit........................................................................................................................................2
( ) (c Dedicated Landflll(budal) by the pemtitlee of the wastewater treatment facility...............................................5
9
(a) Chlorination., ..................................... ............................................................... . .................. ............ ...
(b) Dechlorination....... ................................................................................................................................ ...5
(c) Ozone.....................................................................................................................................................5
(d) Radiation. ...... .... ........ ... .............5
(10) CHEMICAL ADDITION SYSTEM(S) ( see definition No, 9) [not applicable to chemical additions rated as item (3)0).
(5)(a)(xl), (s)(a), (e)(b), (7)(b), (7)(e). (9a), (9)(b) or (9)(0) 5 points each:
List............................................................................................................. ................5
....................................................................................................................sr
............ ....... ..................................................................................................... _....ate
....................................................................................................................... 5
(1 1) MISCi3LANEGUS UNfTSrPAGCESSES
(a) Holding Ponds, Holding Tanks or Settling Ponds for Organic or Toxic Materials Including wastes from mining
operations containing nitrogen or phosphorus compounds In amounts significantly greater than Is common
fordomestic wastewater............................................................... ............................................................ A
(b) Effluent Flow Equalization (not applicable to storage basins which are Inherent In land application systems) ..... .2
(c) Stage Discharge (riot applicable to storage basins Inherent in land application systems) _....... _..................
(d) Pumps.. ....................................................................................................................... ..3
(e) Stand -By Power Supply...........................................................................................................
(f ) Thermal Pollution Corrirot Device.............................................................................
TOTALPaINTS.......................................................................
CLASSFICAMN
CClatss lass 11 ..............................................................................................M.".
s
ClassIII .................................................................................................... 26-50 s
classIV ................. .............................................................................. ....... Be -Up Points
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Facilities having a rating of one through four points. Inclusive, do not require a certified operator.
Facilities having an activated sludge process will be assigned a rninimum classification of Class If.
Facilities having treatment processes forthe removal of metal or cyanide will be assigned a minimum classification of Class 11.
Fact€ties having treatment proceeses for the biological removal of phosphorus will be assigned a minirnum dassiricat€on of Class Ill.
-------------------------------------------------------------
4004 DEFINITIONS
The following definitions shall apply throughout this Subchapter.
(1) Activated Carbon Beds. A physical/chemical method for reducing soluble organic material from wastewater eftluent; The column -type beds used in this
method will have a flow rate varying from two to eight gallons per minute per square toot and may be either uprlow or downffow carbon beds. Carbon may or
may not be regenerated on the wastewater treatment plant site;
(2) Aerated Lagoons. A basin In which all solids are maintained In suspension and by which biological oxidalion or organic matter Is reduced through artificially
accelerated transfer of oxygen on a flow -through basis;
(3) Aeration. A process of bringing about Intimate contact between air or high purity oxygen In a liquid by spraying, agitation or diffuslon;(3a) Extended
Aeration. An activated sludge process utilizing a minimum hydraulic detentlon time of 18 houra.
(4) Agriculturally managed site. Any she on which a crop Is produced, managed, and harvested (Crop Includes grasses, grains, trees, etc.);
(5) Air Stripping. A process by which the ammonium Ion is first converted to dissolved ammonia (pH adjustment) with the ammonia then released to the
atmosphere by physical means; or other similar processes wh;ch remove petroleum products such as benzene, toluene, and xylene;
(6) Carbon Regeneration. The regeneration of exhausted carbon by the use of a furnace to provide extremely high temperatures which volatilize and oxidize iha
absorbed Impurities;
(7) Carbonaceous Stage. A stage of wastewater treatment designed to achieve 'secondary effluent limits;
(8) Centrifuge. A mechanical device in which centrifugal force Is used to separate solids from liquids or to separate liquids of different denshlas;
(9) Chemical Addition Systems- The addhlon of chemicals) to wastewater at an application point for purposes of Improving solids removal, pH adjustment,
alkalinity control, etc.; the capability to experiment wfth different chemicals and different application points to achieve a specific result will be considered one
system,, the capability to add chemical(s) to dual units will be rated as one system; capability to add a chernkal at a different application points for different
purposes will result In the systems being rated as separate systems;
(10) Chemical Sludge Conditioning. The addition of a chemical compound such as lime, ferric chloride, or a polymer to wet sludge to coalesce the mass prior to
its appilcat;on to a dewatering device;
(11) Closed Cycle Systems. Use of holding ponds or holding tanks for containment of wastewater containing Inorganic, non-toxlc materials from sand, gravel,
crushed stone or other similar operations. Such systems shall carry a maximum of two points regardless of pumping facilities: or any other appurtanances;
(12) Combined Removal of Carbonaceous BOD and Nitrogenous Removal by Nitrification- A single stage system required to achieve permit effluent limits on SOD
and ammonia nitrogen within the same biological reactor;
(13) Dechlorinatlon. The partial or complete reduction of residual chlorine in a ;;quid by any chemical or physical process;
(14) Denhrif€ration Process. The conversion of nitrate-nftrogen to nitrogen gas;

(15) Electrodiaysis. Process for removing Ionized salts from water through the use of Ion -selective ion -exchange membranes;
(16) Filter Press, A process operated mechanically for partially dewatoring sludge;
(17) Foam Separation. The planned frothing of wastewater or wastewater effluent as a means of removing excessive amounts of detergent materials through
the introduction of air In the form of fine bubbles; also called foam fractionation;
(18) Grit Removal. The process of removing grit and other heavy mineral matter from wastewater;
(19) Imhoff Tank. A deep two story wastewater tank consisting of an upper sedlmerntatxin chamber and a tower sludge digestion chamber.
(20) Instrumented Flow Measurement. A device which Indicates and records rate of flow;
(21) ion Exchange. A chemical process In which ions from two different molecules are exchanged;
(22) Land application:
(a) Sludge Disposal. A final sludge disposal method by which wet sludge may be applied to land elther by spraying on the surface or by subsurface injection
Q.a., chlsel plow); [not applicable for types of sludge described In (11) of this Rule);
(b) Treated Effluent. The process of spraying treated wastewater onto a land area or other methods of application of wastewater onto a land area as a
means of fFnai disposal or treatment;
(23) Microscrean. A low speed, continuously back -washed, rotating drum filter operating under gravity conditions as a polishing method for removing
suspended solids from effluent;
(24) Nitrification process. The b€ochomical conversion of unoxidized nitrogen (ammonia and organic nitrogen) to oxidized 0rogen (usually nitrate);
(25) Nitrogenous Stage. A separate stage of wastewater treatment designed for the specific purpose of converting ammonia nitrogen to nitrate nitrogen;
(26) Phosphate Removal, Biological. The removal of phosphorus from wastewater by an oxiclanoxic process designed to enhance luxury uptake of phosphorus
by the microorganisms-
(27) Polishing Pond. A holding poW following secondary treatment with sufficient detentlon time 10 allow settling of finely suspended solids;
(26) Past Aeration. Aaratlon following conventional secondary trsalment units to Increase effluent D.O. or for any other purpose;
(29) post Aeration. (Cascade) A pot€shirng method by which dissolved oxygen Is added to the oflivard by a nonmechanical, gravity means of flowing down a
series of steps or weirs; The flow occurring across the stops of weirs moves In a fairly thin layer and the operation of the cascade requires no operator
adjustment; thus, zero points are assigned even though this Is an essenilal step to meeting the Ilmhs of the discharge permit;
(30) Powdered to Granular Activated Carbon Feed. A biophysical carbon process that ullilzes biological acttvlty and organic absorption by using powdered or
granular activated carbon; Virgin or regenerated carbon Is feed controlled Into the system;
(31) Preaeraldon. A tank constructed to provide aeration prior to primary treatment:
(32) Preliminary Units. Unit operations in the treatment process, such as screening and comminution, that prepare the liquor for subsequent major operations;
(33) Industrial Protteatmenf.
(a) Pre-treatment Unit, Industrial. The conditioning of a waste at Its source before discharge, 10 remove or to neutralize substances Injurious to sewers and
treatment processes or to effect a partial reduction in load on the treatment process which is operated by the same governing body as the wastewater
treatment plant being rated;
b) Pre-treatment Program, Industrial - must be a State or EPA required program to receive points on the rating sheet;
(34) Primary Clarifiers. The first settling tanks through which wastewater is passed In a treatment works for the purpose of removing settleable and suspended
solids and AOD which is associated with the solids;
(35) Pumps. All Influent, effluent and in -plant pumps;
(36) Radiation. Disinfection or sterilization process utilizing devices emltl€ng ultraviolet or gamma rays;
(37) Reverse Osmosis. A treatment process in which a heavy contaminated liquid is pressurized through a membrane forming nearly pure liquid free from
suspended solids;
(38) Rotating Biological Contractors. A fixed bio€oVeal growth process In which wastewater flows through tanks in which a series of partially submerged circular
surfaces are rotated;
(39) Sand Filters:
(a) Intermittent Biological. Filtration of atfluart following septic tanks, lagoons, or some other lrealrnertf process In which further blodecomposhion is
expected to produce desired effluents; Hydraulic loading rates on these filters are computed In gpdrac and have a resulting low gpm/sf (less than one);
b) Recirculating biological - the same type of sand filter as defined in Subparagraph (39) (a) of this Rule with the added capability to rocycle effluent back
through the sand filter;
(40) Sand or Mixed -Media Filters. A pollshing process by which effluent ftmits are achieved through a further reduction of suspended solids;
(a) low rate — gravity, hydraulically loaded filter with loading rates in the one to three gpm/sf range;
(b) high rate -- a pressure, hydraulically loaded filter with loading rates in the five gpm/sf range; At arry rate, the loading rate will exceed three gpWat.
(41) Secondary Clarifiers. A tank which follows the biological unit of treatment plant and which has the purpose of removing sludges associated with the
biofoglcal treatment units;
(42) Separate Sludge Reaaration. A part of the contact stabilization process where the activated sludge Is transferred to a tank and aerated before returning it
to the contact basin;
(43) Sept;c Tank A single -story settling tank In which settled sludge is In contact with the wastewater flowing through the tank; shall not be applicable for
septic tank systems serving single family residences having capacity of 2,a00 gallons or less which discharge to a nitrification field;
(44) Sludge Digestion. The process by which organic or volatile matter and sludge is gasified, liquelled. mineralized or corrrerted into more stable orgardc matter
through the activity of living organisms, which includes aerated holdnng tanks;
(45) Sludge Drying Beds. An area comprising natural or artificial layers of porous materials upon which digested sewage sludge Is dried by drainage and
evaporation;
(46) Sludge Elutriaticn. A process of sludge conditioning in which certain constituents are removed by successive washings with fresh water or plant effluent;
(47) Sludge Gas Uifftxation. The process of using sewage gas for the purpose of heating buildings, driving engiries, etc.;
(48) Sludge Holding Tank (Aerated and Nonaerated). A tank utilized for small wastewater treatment plants not containing a digester In which sludge may be
kept fresh, and supernatant withdrawn prior to a drying method (i.e. sludge drying beds); This may be done by adding a small amount of air simply to keep the
sludge fresh, but not necessarily an amount that would be required to achieve stabilization of organic matter. A nonaerated tank would simply be used to
decant sludge prior to dewatering and would not allow long periods (several days of detention) without resulting odor problems;
(49) Sludge Incinerators. A furnace designed to burn sludge and to remove all moisture and combustible materials and reduce the sludge to a slerlle ash;
(50) Sludge Stabilization (Chemical or Thermalj. A process to make treated sludge less odorous and putrescdtle, and to reduce the pathogenic organism
content; This may be done by pH adjustment, chlorine dosing, or by heat treatment;
(51) Sludge Thickener. A type of sedimentation tank In which the sludge Is permitted to settle and thicken through agitation and gravity;
(52) Stabilization Lagoon A type of oxidation lagoon In which biological oxidation of organic matter Is effected by natural transfer of oxygen to the water from
air (not a polishing pond);
(53) Stand -By Power Supply, On site or portable electrkal gwnwratlrng equipment;
(54) Static Screens. A stationary screen designed to remove solids, including non-blodegradable particulate (floatable solids, suspended solids and BOD
reduction) from municipal and Industrial wastewater treatment systems;
(56) Tertiary Treatment. A stage of treatment following secondary which is primarily for the purpose of effluent polishing; A settling lagoon or sand or coal filter
might be empdcI for this purpose;
(56) Thermal Pollution Control Device. A device providing for the transfer of heat from a fluid flowing In tubes to another fluid outside the tubes, or vloe versa;
or other means of regulating liquid temperatures;
07) Thermal Sludge Corditioner. A conditioning process by which heat Jr. added for a protracted period of time to improve the dwwaterabllfty of sludge by the
solubiiizing and hydraulizing of the smaller and more htghiy hydrated sludge particles;
(58) Toxic Materials. Those wastes or combinations of wastes, Including disease -causing agoras which after discharge and upon exposure, Ingestion, Inhalation
or assimilation Into arry organism, either directly from the environment or €rdirect€y by Ingestion through food chains, will cause death, disease, behavioral
abnormalities, cancer, genetic mutations, physiological maffundlons (Inciud€rig malfunctions in reproduction) or physical deformations. in such organisms or their
offspring; Toxic materials include, by way of illustration and not limitation: lead, cadmium, chromium, mercury, vanadium, arsenic, zinc, ortho-nitro-chloroberrzente
(ONCE), polychlorinated blphenyls (PCBs) and dichloroddphenyl trich loroethane (DDT); and any other materials that have or may hereafter be determined to have
toxic properties;
(59) Trickling Filter. A biofoglcal treatment unit consisting of a material such as broken stone or rock over which wastewater is distributed; A high rate tricklinng
filter Is one which operated al between 10 and 30 mgd per acre. A low rate trickling filter is one which Is designed to operate at one to four mgd per acre-
(60) Trickling Filter (Packed Tower). A plug flow type of operation In which wastewater flows down through successive layers of media or filtrate material; Organic
material Is removed continually by the act" biological fixed growth in each successive layer. This method may produce 'secondary' qual€ty effluent, or may be
adapted to produce a nitr;fled effluent;
(61) Vacuum Filter, Centrifuges, or Filter Presses. Devices which are designed to remove excess water from either digested or undigested sludge prior to disposal
or further treatment.