WQ0003044_Final Permit_19960726

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
July 26, 1995
Mr. Nick Crane, Managing Agent
Dunescape Villas Homeowners Association, Inc.
P.O. Box 4455
Emerald Isle, NC 28594
Dear Mr. Crane:
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Subject: Permit No. WQ0003044
Dunescape Villas HOA
Dunescape Villas Condominiums
Wastewater Rotary Distributor Facilities
Carteret County
In accordance with your renewal request received January 11, 1995, we are forwarding herewith
Permit No. WQ0003044, dated July 26, 1995, to the Dunescape Villas Homeowners Association,
Incorporated, for the continued operation of the subject wastewater rotary distributor facilities. The
narrative of the permit has been modified in an attempt to more accurately describe the components which
exist at the subject treatment facility.
This permit shall be effective from the date of issuance until June 30, 2000, shall void Permit No.
WQ0003044 issued August 30, 1991, 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.
If you need additional information concerning this matter, please contact 1WPqWWlvat (919)
733-5083, ext. 549.
Sincerely,
A. Presto oward, Jr., P.E.
cc: Carteret County Health Department
Wilmington Regional Office, Water Quality Section
Wilmington Regional Office, Groundwater Section
Brian Wootton, Groundwater Section, Central Office
Training and Certification Unit
Facilities Assessment Unit
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

NORTH CAROLINA
ENVIRONMENTAL MANAGEMENT COMMISSION
DEPARTMENT OF ENVIRONMENT, HEALTH AND NATURAL RESOURCES
RALEIGH
HIGH RATE INFILTRATION SYSTEM 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 THE
Dunescape Villas Homeowners Association, Incorporated
Carteret County
continued operation of approximately 1,760 linear feet of 8-inch gravity sewer; a 150 gpm influent pump
station with dual pumps and approximately 247 linear feet of 4-inch force main; a 70,200 GPD
wastewater treatment and rotary distributor facility consisting of a 28,860 gallon flow equalization basin, a
43,680 gallon aeration basin, a 5,850 gallon clarifier, a 15,000 gallon aerated digester and a tertiary
section consisting of two (2) tertiary filters (each with a surface area of 16 square feet), a 2,872 gallon
mudwell, a 2,872 gallon combination clearwell and chlorine contact tank with a tablet type chlorinator and
a 2,900 gallon dosing tank; a 55,000 gallon aeration basin, two (2) 5,850 gallon clarifiers and a tertiary
section consisting of two (2) tertiary filters (each with a surface area of 15 square feet), a 4,700 gallon
mudwell, a 3,750 gallon combination clearwell and chlorine contact tank with a tablet type chlorinator and
a 5,082 gallon dosing tank; four (4) 160 cfm blowers, three (3) rotary distributors (each with a diameter
of 65 feet), a 200 gpm dosing pump, and all associated piping, valves and appurtenances to serve
Dunescape Villas Condominiums, with no discharge of wastes to the surface waters, pursuant to the
renewal request received January 11, 1995, and in conformity with the project plan, specifications, and
other supporting data subsequently filed and approved by the Department of Environment, Health and
Natural Resources and considered a part of this permit.
This permit shall be effective from the date of issuance until June 30, 2000, shall void Permit No.
WQ0003044 issued August 30, 1991, and shall be subject to the following specified conditions and
limitations:
I. PERFORMANCE STANDARDS
1. In the event that the facilities fail to perform satisfactorily, including the creation of
nuisance conditions, the Permittee shall tape immediate corrective actions, including those
actions that may be required by this Division, such as the construction of additional or
replacement wastewater treatment or disposal facilities.

2. This permit shall become voidable if the soils fail to adequately assimilate the wastes and
may be rescinded unless the facilities are installed, maintained, and operated in a manner
which will protect the assigned water quality standards of the surface waters and ground
waters. The ponding of wastewater on the surface of the distribution field when the dosing
cycle commences shall be considered as evidence of failure of the soils to adequately
assimilate the wastewater. Additionally, such failure shall be interpreted as a violation of
this permit condition.
3. 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 North Carolina Division of
Environmental Management.
4. Adequate measures shall be taken to divert stormwater from the high rate infiltration area
and to prevent wastewater runoff.
5. Diversion or bypassing of the untreated wastewater from the treatment facilities is
prohibited.
6. 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.
7 _ The following buffers shall be maintained:
a) 400 feet between high rate infiltration unit and any habitable residence or place of public
assembly under separate ownership or which is to be sold,
b) 200 feet between high rate infiltration unit and any private or public water supply
source and any streams classified as WS or B,
c) 200 feet from mean high water between high rate infiltration unit and any "SA" or "SB"
classified surface waters,
d) 200 feet from normal high water between high rate infiltration unit and any other
stream, canal, marsh, or coastal waters,
e) 200 feet from normal high water between high rate infiltration unit and any Class I or
Class II impounded reservoir used as a source of drinking water,
f) 200 feet between high rate infiltration unit and any other lake or impoundment,
g) 200 feet between high rate infiltration unit and any Drainage systems (ditches, drains,
surface water diversions, etc.) and from any groundwater lowering and surface
drainage ditches,
h) 100 feet between high rate infiltration unit and property lines,
i) 50 feet between treatment units and property lines, and
j) 50 feet between high rate infiltration unit and other treatment units and public right of
ways.
Some of the buffers specified above may not have been included in previous permits for
this waste treatment and disposal system. These buffers are not intended to prohibit or
prevent modifications, which are required by the Division, to improve performance of the
existing treatment facility. These buffers do, however, apply to modifications of the
treatment and disposal facilities which are for the purpose of increasing the flow that is
tributary to the facility. These buffers do apply to any expansion or modification of the
high rate infiltration areas and apply in instances in which the sale of property would cause
any of the buffers now complied with, for the treatment and disposal facilities, to be
violated. The applicant is advised that any modifications to the existing facilities will
require a permit modification.
2

8 . A usable green area shall be maintained for wastewater disposal. The green area shall have
the capability of accommodating the average daily flow of the facility being served without
exceeding the loading rates of the green area. A "green area", as defined in 15A NCAC 2H
.0404 (g)(7), is an area suitable for waste disposal, either in its natural state or which has
been modified by planting a vegetative cover of grasses or low growing shrubbery.
II. OPERATION AND MAINTENANCE REQUIREMENTS
1. The facilities shall be properly maintained and operated at all times.
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 the plant at least five
days per week, 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.
During the months of April through October, the five days shall be Monday, Wednesday,
Friday, Saturday and Sunday, including holidays.
3. The application rates for the high rate infiltration system shall not exceed 10GPD/ft2-
4. The facilities shall be effectively maintained and operated as a non -discharge system to
prevent the discharge of any wastewater outside of the high rate infiltration disposal area,
which result from the operation of this facility.
5. No traffic or equipment shall be allowed on the disposal area except while installation
occurs or while normal maintenance is being performed.
6. The rotary distribution fields shall be raked twice weekly during the months April through
October and once a week during the months of November through March.
7. The screenings removed from the wastewater treatment plant shall be properly disposed in
a sanitary landfill or by other means which have been approved by this Division.
8. Vegetative growth must be kept out of the rotary distribution areas at all times. All
vegetation must be removed manually so that minimal disturbance will occur to the disposal
area.
9. The application of chemicals to the distribution field(s) is expressly prohibited.
10. An automatically activated standby power source shall be on site and operational at all
times. If a generator is employed as an alternate power supply, it shall be tested weekly by
interrupting the primary power source.
11. The flow measurement device shall be calibrated annually by a representative of a firm
which is routinely engaged in the calibration of flow measurement devices. Records of this
calibration, including all information pertinent to the calibration, shall be available during
any inspection by Division staff.
12. Diffusers shall be cleaned as needed to ensure that adequate aeration is provided. Records
of this maintenance shall be maintained by the permittee.

13. The chlorine tablets used in the disinfection facility shall be of the kind and type specified in
the plans and specifications approved by the Division.
MONITORING AND REPORTING REQUIREMENTS
Any monitoring deemed necessary by the Division of Environmental Management 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 Averagea. _ Daily Maxi:mumb
FIow 70,200 GPD
BOD5 (5-day, 20°C) 10 mg1I
NH3-N 4 mg/I
TSS 20 mg/1
Fecal Coliform 14 per 100 mI 43 per 100 ml
a Monthly average shall be the arithmetic mean of all samples collected during the
reporting period.
Daily maximum shall be the maximum value of all samples collected during the reporting
period.
The effluent from the subject facilities shall be monitored, by the Permittee, at the point
prior to discharge to the rotary distributors for the following parameters:t
Parameter Sampling Point Sampling, Frequency Type of Sample
Flow
BOD5 (5-day, 20°C)
NH3 as N
TSS
Fecal Coliform
Settleable Matter
Residual Chlorine
NO3
TDS
TOC
Chloride
Influent or Effluent
Continuous
Recording
Effluent
*2/Month
Composite
Effluent
*2/Month
Composite
Effluent
*2/Month
Composite
Effluent
*2/Month
Grab
Effluent
Daily
Grab
Effluent
Daily
Grab
Effluent
**Triannually
Grab
Effluent
Triannually
Grab
Effluent
**Triannually
Grab
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.
** Triannual sampling shall be conducted during March, July and November.
t The Permittee shall monitor the influent and effluent from each wastewater treatment
plant train for the above specified parameters. The Permittee shall maintain a complete
set of monitoring data for each wastewater treatment plant train.
4

If Groundwater sampling indicates or predicts problems with compliance with of the
Groundwater Standards, this permit will be modified to include additional and/or more
restrictive limitations.
3. Three (3) copies of all effluent monitoring data (as specified in condition 1112) on Form
NDMR-1 shall be submitted on or before the last day of April, August and December. All
information shall be submitted to the following address:
NC Division of Environmental Management
Water Quality Section
Facility Assessment Unit
Post Office Box 29535
Raleigh, N.C. 27626-0535
4. A record shall be maintained of all residuals removed from this facility. The record shall
include the name of the hauler, the permit authorizing the disposal or a letter from a
municipality agreeing to accept the residuals, the date the residuals were hauled, and the
volume of residuals removed.
5. 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; and
f. Dates fields were raked and arms inspected.
6. Noncompliance Notification:
The Permittee shall report by telephone to the Wilmington Regional Office, telephone
number [phone], 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 basin or tank, 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 renders 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
of all or any portion of the influent to such station or facility; or
d. Any time that self -monitoring information indicates that the facility is not in compliance
with its permit limitations.
Persons reporting such occurrences by telephone shall also file a written report in letter
form within 15 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
Within ninety (90) days of permit issuance, the monitor wells (MW-1, MW-2 and MW-3)
must have new identification plates and locks securing the wells against unauthorized
access and use (15A NCAC 2C .0108). The identification plates are to be constructed of a
rustproof, durable material, shall be permanently affixed to the well and shall contain the
following information:
a) drilling contractor name and registration number,
b) date the well was completed,
c) total depth of the well, and
d) a warning that the well is not a water supply well and that the groundwater may contain
contaminants.
2. Monitor wells MW-1, MW-2 and MW-3 shall be sampled every March, July and
November for the following parameters:
NO3 Ammonia Nitrogen
TDS TOC
pH Water Level
Chloride Fecal Coliform
Total Phosphate
Volatile Organic Compounds - In November only (by Method 1 or 2 below)
Method 1: Method 6230D (Capillary - Column), "Standard Methods For The
Examination of Water and Wastewater", 17th ed., 1989
Method 2: Method 502.2 "Methods For The Determination Of Organic Compounds
In Drinking Water", U.S. EPA-600/4-88/039
The measurement of water levels must be made prior to sampling for the remaining
parameters. The depth to water in each well shall be measured from the surveyed point on
the top of the casing.
The measuring points (top of well casing) of all monitoring wells shall be surveyed to
provide the relative elevation of the measuring point for each monitoring well.
If TOC concentrations greater than 10 mg/1 are detected in any downgradient monitoring
well, additional sampling and analysis must be conducted to identify the individual
constituents comprising this TOC concentration. If the TOC concentration as measured in
the background monitor well exceeds 10 mg/1, this concentration will be taken to represent
the naturally occurring TOC concentration. Any exceedances of this naturally occurring
TOC concentration in the downgradient wells shall be subject to the additional sampling
and analysis as described above.
If any volatile organic compounds are detected by Method 6230D, or the equivalent Method
502.2, then the Wilmington Regional Office Groundwater Supervisor, telephone number
[phone], must be contacted immediately for further instructions regarding any
additional follow-up analyses required. The results of all initial and follow-up analyses
must be submitted simultaneously.
The results of the sampling and analysis shall be sent to the Groundwater Section, Permits
and Compliance Unit, P.O. Box 29535 Raleigh, N.C. 27626-0535 on Form GW-59
[Compliance Monitoring Report Form] every April, August and December.
0

3. The COMPLIANCE BOUNDARY for the disposal system is specified by regulations in
15A NCAC 2L, Groundwater Classifications and Standards. The Compliance Boundary
for the disposal system constructed prior to December 31, 1983 is established at either (1)
500 feet from the waste disposal area, or (2) at the property boundary, whichever is closest
to the waste disposal area. 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).
In accordance with 15A NCAC 2L, a REVIEW BOUNDARY is established around the
disposal systems midway between the Compliance Boundary and the perimeter of the
waste disposal area. Any exceedance of standards at the Review Boundary shall require
remediation action on the part of the permittee.
4. Any additional groundwater quality monitoring, as deemed necessary by the Division, shall
be provided.
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 maintain 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 to the
Division of Environmental Management or other permitting authority, upon request.
3. Any duly authorized officer, employee, or representative of the Division of Environmental
Management 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
1. 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.
3. 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 of Environmental Management 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.
7

4. The subject wastewater treatment and disposal facilities shall be connected to an operational
publicly owned wastewater collection system within 180 days of its availability to the
subject facilities, if the subject wastewater treatment or disposal facilities are in
noncompliance with the terms and conditions of this non -discharge permit or the governing
statutes or regulations. Prior to the initiation of these connection activities, appropriate
approval must be received from this Division.
5. The annual administering and compliance fee must be paid by the Permittee within thirty
(30) 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 15A NCAC 2H .0205
(c)(4).
6. Failure to abide by the conditions and limitations contained in this permit may subject the
Permittee to an enforcement action by the Division of Environmental Management in
accordance with North Carolina General Statute 143-215.6(a) to 143-215.6(c).
7. 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.
8. A set of approved plans and specifications for the subject project must be retained by the
Permittee for the life of this project.
9. 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 twenty-sixth day of July, 1995
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
0 a6:CL'C'. 6, fi":X- ,
A. Preston oward, Jr., P.., Director
Division of -Environmental Management
By Authority of the Environmental Management Commission
Permit Number WQ0003044
8

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RATING SCALE FOR CLASSIFICATION OF WATER POLLUTION CONTROL SYSTEMS
Name of Facility:
Owner or Contact Person: -ran
V eUI
tr
H08
Mailing Address: PC 13cx
L44SSr
County: Crkf kre t
_Telephone:
Present Classification:
r New Facility
Existing Facility ✓
NPDES Per. No. NCOO
Nondisc.
Per. No.WQ Q=3014�
Health Dept.Per No.
Rated by:
Telephone: _ q
_
— 350C Date:
Reviewed by:
Health Dept.
Telephone:
Regional Office
Telephone: 3q 6-0
Central Office
Telephone:
ORC: ►ti 0` r,' ACZ -cc
Grade:
Telephone:
Check Classification(s):
Subsurface
Spray Irrigation
Land Application
Wastewater Classification: (Circle One) I
it 111 IV
Total Points: SO
i :►1 ' Stiff :► / ' : 1 / �►IIi�A w�a ru �►1 •Ir ��:r : i :♦ ►Ih : d � ► / 4 1:: r: �i/ 1�i S: \�
i��� / / :' O► ate" � • ar. �� ►�: �.► � ' 1. Via. ii r� �� �. w�\'►
S UBS URFACE CLP-5S1 FICATK7N
(check ail 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
SPRAY IRRIGATON CLASSIFICATKJN
(check all units that apply)
I. -preliminary
treatment (definition no. 32 )
2.
lagoons
3.
seplic tanks
4.
pump tanks
S.
pumps
6.
sand filters
7.
grease trapAnferceptor
8.
oil/water separators
9.
disinfection
10.
chemical addition for nutrient/algae control
ti.
spray irrigation of wastewater
In addition to the above clessifleetions, pretreatment of wastewater In excess of these components shall
be rated using the point rating system and will require an operator wlth an appropriate duel certification.
LAND APPLICATION/RESIDUALS CLASSIFICATION (Applies only to permit holder)
1. Land application of biosolids, residuals or contaminated soils on a designated site.
---------------_---------------------.-------------.__._...------
WASTEWATER TREATMENT FACILITY CLASSIFICATION A
The following systems shall be assigned a Class I classification, unless 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. OiVwater Separaler Systems consisting only of physical separation, pumps and disposal;
2. Septic Tank/Sand Fitter 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, disinfection, necessary chemical treatment for
algae or nutrient control, and direct discharge;
4. Closed -loop Recycle Systems;
5. Groundwater Remedlation Systems consisting only of oilfwater separators, pumps, air -stripping, carbon adsorption, disinfection
and dispos;J;
6. Aquacufture operations with discharge to surface waters:
7. Water Plant sludge handling and back -wash water treatment;
a. Seafood processing consisting of screening and disposal.
9. Single-family discharging systems, with the exception of Aerobic Treatment Units, will be classified if permitted after July 1,
1993 or if upon inspection by the Division, h is found that the system is not being adequately operated or maintained. Such
systems will be notified of the classification or reclassttication by the Commission, in writing.

The following scale is used for rating wastewater treatment facilities: (circle appropriate points)
rrEM POINTS
{ t } Industrial Pretreatment Units or Industrial Pretreatment Program (see definition No. 33)...................................................4
(2) DESIGN FLOW OF PLANT IN gpd [rot applicable to norcontaminated cooing waters, sludge handling facilities for
water purification plants, totally dosed cycle syslems(see definition No. 11). and iaciiities consisting only at Item
(4)jd) or Items (4)(d) and (11)(d))
0 - 20,000................................................................................................................................................1
20.001 - 60.000......................................................................................................................................2
50.001 - 100,000................................................................................................................................n
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 at ........_.......30
Design Flow (gpd)
(3) PRELIMINARY
(a)
UNITSIPROCESSES (see definition No.32)
Aar Screens .............................................................................................................................................
ter-%
or
(b)
Mechanical Screens, Slatic Screens or Comrrdnutfng Devices...._......_........»..»..._....................2
(c)
Grit Removal...........................................................................:..................................................................1
or
(d)
Mechanical or Aerated Grit Removal.............................................................................................................2
(e)
flow Me asu ring Device................................................................................................................................1
(f)
(9)
or
Instrumented Flow Measurement ................................................ I....... .......................
PreaeratIon................ .............................. ....... ........................................................... .................. I ......
.
(h)
Influert Flow Equalization ....................................... ................................ ........ ..........................................
(1)
Grease or Oil Separators - Gravity.................................................................................................................2
Mechanical................................................................................................................................................3
Dissolved Air Flotation.................................................._.............................................................................8
())
Prechlodnailon..... ........................................................... ...................... ..................................................
5
(4) PRIMARYTREATMENTLNfrS+PROCESSES
(a)
Septic Tank (see definition No. 43)... .»......................................................................................................2
(b)
Imhoff Tank...............................................................................................................................................5
(c)
Primary Ctariflers..........................................................................................................................................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 act:vaies such as gem
orgold mining)......................................................................................................................
(5) SECONDARYTREATMENTLNITWPROCESSES
(a)
Carbcnaceokrs Stage
0) Aeration -High Purity Oxygen System.. ............................................................................
Drtlused Air System......................................................................................................
Cp
Mechanical Air System (fixed, floating or rotor) .................................................................
Separate Sludge Reaerallon............................................................................................3
(ii) Trickling Filter
HighRate.......................................................................................................................7
StandardRate...............................................................................................................5
PackedTower, ................................................................................................................
5
(iii) Biological Aerated Filter or Aerated Biological Fiher..... —_....... ............ .......................
...10
(Iv) Aerated Lagoons..........................................:................------.........................................10
(v) Rotating Biological Contaclon:......................................................................................10
(vi) Sand Fillers -interminent biological ................................. .................... .............................
2
Recirculatingbiological......................................................... «....... ...................................
(vii) Stabilization Lagoons.....................................................................................................
!j,
(vill) Clarifier........................................................................................................................
.
(Ix) Single stage system for comb€ned carbonaceous removal of BOO and nitrogenous removal b
nitrification (see definition No. 12)(Points for this item have to be in addition to items
(5)(a)(I) through (5)(a)(vifl).
utilizing the emended aeration process (see deilnht on No.3a).......................................
utilizing other than the extended aeration process...........................................................9
(x) Nutrient add'nicns to enhance Boo removal......................................................................
(xi) Biological Culture ('Super Bugs-)addition........................................................................5
( b)
Nitrogenous Stage
(1) Aeration - High Purity Oxygen System.............................................................................20
DfvsadAirSyslem.......................................................................................................10
Mechanical Air System (fixed, floating or rotor) .................... ............................_.............4
Separate Sludge Reaeration.............................................................................................3
(it) Trickling Filter -High Rate...................................................................................................7
StandardRate...............................................................................................................S
PackedTower......-. ........................................................................................................
S
(liI) Biological Aerated Fifter or Aerated $fologital F11er.............................................................1 0
(Iv) Rotating Biological Contactors......................................................................................10
(v) Sand Fitter - Intermittent bloioglcal..................................................................................2
Reclrcuta(ing biological. ................................................... ...............................................
�3
(v1) Cfaritier...........................................................................................................................
(6) TERTIARY OR ADVANCED TREATMENTLNITS"PROCESSES
(a)
Activated Carbon Beds -
without carbon regeneration...................................................................................................5
withcarbon regensration................*..................................................................................1
5
(b)
Powdered or Granular Activated Carbon Feed- -a-
Aithout carbon regeneration...............................................................................................5
•kith carbon regeneration.....................................................................................................15
(c)
Air stripping....................................................................................................................................
..5
(d)
Denitrificatlon Process..............................................................................................................................10
(a)
Electrodialysis......................................................................................._.................................................5
(1)
Foam Separation.......................................................................................................................................5
(g)
Ion Exchange .......... .................................... _............................... ..................................... .........................
5
(h)
Land Appftallon of Treated Effluent (see definition No. 22b) (rot applicable for sand, gravel, stone
and other similar mining operations) by high rate Infiltratlon........... ............. .............................................
{I)
Microscreens.............................................................................................................................................
([)
Phosphorous Removal by Biological Processes (See deflnhlon No. 26).........................................................20
(k)
Pollshing Ponds • without aeratlon............... _............................................................................................
2
withaerallon................................................... »............................................................5

(1) Post Aeration - cascade..............................................................................................................................0
diffused or mechanical................................................................ ... ...................2
(m) Reverse Osmosis ................................ ............................................................................ __................ •......
(n) Sand or Mixed -Media Filters - low rate...................................................................................................... 42)
highrate......................................................................
(o) Trealmerrl processes for removal of metal or cyanide...................................................................................1 5
( p ) treatment processes for removal of toxic materials other than metal or cyanide ................ ..........................1 5
(7) SL;JDGETREATMFM
(a) Sludge Digestion Tank - Heated (anaerobic)............................................................................................
Aerobic.................. ........................... ................ ................ ..... .... .... ............................. I................... 5
Unhealed(anaerobic)............................................................................................. ...............................�...
(b) Sludge Stabilization (chemical or thermal).. ...................................................................................`%
(c) Sludge Drying Beds - Gravity................................................................:.....................................................2
VacuumAssisted.... ............. .................................................................................................................. 5
(d) Sludge Eluir€alion..............:-,AW..... .................................................................................................... ...... .5
(a) Sludge Conditioner (chemical� or I ennal).......................................................... ........................5
(1) Sludge Thickener (gravity}.........................................................................................................................5
(9) Dissolved Air Rotation Unil (not applicable to a unit rated as(3)(i)).............................................................8
(h) Sludge Gas Utilization (including gas storage).............................................................................................2
(i) Sludge holding Tank - Aerated ......... ......................... ................................. ............................... ................ .5
Nort- ae rated..........................................................................................•-................................................. 2
{J) Sludge incinerator (not including activated carbon regeneration)................................................................10
(k) Vacuum Flier, Cenir4uge. or F^er Press or other similar dewatering devices ...................................................1 D
(8) RESiDUALS UTlL1ZAT0N/DISPOSAL (including incinerated ash)
(a) Lagoons...................................................................................................... ...2
(b) Land Application (surface and subsurface) (see definition 22a)
by contracting to a land applica€on operator or landfill operator who holds the land application permit
or landfill permit.......................................................................................................................................� (c} Dedicated Landfill(burial) by the permittee of the wastewater treatment facility ...............................................
(9) Dt5>`F�cCr1�V
(a) Chlorination...................................................................................................................................-
(b) Dechiorination.......... ..................... ................ ..........•............................ ....
(c) Ozone......................................................................................................................................................5
(d)€3adlalion.................................................................................................................................................5
(1 0} CMEMICAL ADDITION SYSTEM(S) ( sae definiion No. 9) fnol applicable to chemical additions rated as hem (3)(j),
(5)(a)(xi), (6}(a), (6)(b), (7)(b), (7)(e), (9a), (9)(b) or (9)(c) 5 points each:
List....................................................................................................................................5
......................... ...... I ..........................--...........
.......................................................................................I...........................................5
......... ...... ......... ........................ ...................................... I ................. ......... I ........... 5
[ t t) MSCELAUVECUS UNIT57PROCESSES
(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
for domestic wastewater............................................................................................................ ......4
..........
(b) Effluent Flow Equalizalion (not applicabe to storage basins which are inhererri In land application systems) ...... 2
(C) Stage Discharge (not applicable to storage basins inherent in land application systems) .................................
(d) Pumps....................................................................................................................................................
(a) $land -By Power Supply ........ •...................................... .................................................................. G�
(f ) Thermal Poliul€on Control Device ............................... ..................................... ..........................
............ -.....
TOTAL POINTS.........................................................................
C(ASSIFCATIGN
ClassI...........................................................................................................5.25 Points
iprv�
.......................................................................................................26.50 Points
....................................................................................................51.65 Points
........... ............................................................................................ 66-Up Points
-------------------------------------------------------------
Facileies 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 minimum classification of Class It.
Facilities having treatment processes for the removal of meta) or cyanide will be assigned a minimum classification of Class II.
Faciiaies having treatment processes for the biological removal of phosphorus will be assigned a minimum classification of Class Ilk.
119
--------------------------------------------------------------
DODO DEFINITIONS
The following definitions shall apply throughout this Subchapter.
(1) Activated Carbon Beds. A physicaVchemlcal method for reducing soluble organic material from wastewater effluent, The column -type beds used in this
method will have a flow rain varying from two to elght.geIons par minute per square foot and may be either upflow or downflow carbon beds. Carbon may or
may not be regenerated on the wastewater treatment plant she;
(2) Aerated Lagoons. A basin in which all solids are maintained in suspension and by which biological oxidation or organic matter is reduced through artificially
accelerated transfer of oxygen on a flow -through basis;
(3) Aeration. A process of bMriging about Intimate contact between air or high purity oxygen in a liquid by spraying, agitation or dffus€on;(3a) Extended
Aeration. An activated sludge process utilizing a minimum hydraulic detention time of 18 hours.
(4) Agriculturally managed she. Any site 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 which remove patroleum products such as benzene, toluene, and xylem;
(5) Carbon Regeneration. The regeneration of exhausted carbon by the use of a furnace to provide extremely high temperatures which volatllize and oxidize ire
absorbed Impuritles;
(7) Carbonaceous Stage, A stage of wastewater treatment designed to achieve 'secondary' effluent limits;
(B) Centrifuge. A mechanical device In which centrifugal force Is used to separate solids from liquids or to separate liquids of ddierenf densc,as;
(9) Chemical Addition Systems- The addition of chemical(s) io wastewater al an application point for purposes of Improving solids removal, pH adJusiment,
alkalinity control, etc.; the capabilhy to experiment with differem chemicals and different a ilcailon points to achieve a spocific 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 chemical at a dilferent application points for different
purposes will resuf In the systems being rated as separate systems;
(10) Chemical Sludge Condil€cuing. The addition of a chemical compound such as Ilms, ferric chloride, or a polymer 10 wet sludge to coalesce the mass prior to
Its application 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 s€mbar operations. Such systems shall cant' a maximum cl two points regardless of pumping facilities or any other appurtenances;
(12) Combined Removal of Carbonaceous BOD and Nitrogenous Removal by Nitrilicalion- A single stage system required to achieve permit effluent limes on SOD
and ammonia nitrogen within the same biological reactor,
(13) Dectuorinailon- The partial or complete reduction of residual chlorine In a liquid by any chemical or physical process;
(14) Denhrillication Process. The conversion of nhrate-nitrogen to nitrogen gas;