WQ0007927_Final Permit_19940531

State of North Carolina
Department of Environment,
Health and Natural Resources Ml."FA
17
Division of Environmental Management A& e
James B. Hunt, Jr., Governor Aawml �
Jonathan B. Howes, Secretary ED E H N F1
A. Preston Howard, Jr., P.E., Director
May 31, 1994
Mr. R A. Bryan, Jr., President
Aviation Fuel Terminals, Incorporated
Route 4, Box 19
Beaufort, North Carolina 28516
Dear Mr. Bryan:
Subject: Permit No. WQ0007927
Aviation Fuel Terminals, Inc.
Groundwater Remediation Facilities
by means of Spray Irrigation
Carteret County
In accordance with your application received May 20, 1993, and subsequent letters in reference to
the Draft permit received February 9, 1994, we are forwarding herewith Permit No. WQ0007927, dated
May 31, 1994, to Aviation Fuel Terminals, Incorporated for the construction and operation of the subject
groundwater remediation by means of spray irrigation facility. This facility is also being constructed for
the treatment of wastewater drained from the bottom of fuel storage tanks. Please be advised that it may be
necessary for the construction of carbon filters for the continued treatment of tank bottom wastewater once
the groundwater remediation activities are completed.
The February 17, 1994 letter in response to the February 9, 1994 draft permit requested that
Condition 114 be removed from the permit. The Division has modified Condition 114 to say that,
"Irrigation shall not be performed in such a manner that will cause runoff." Also, Aviation Fuel requested
that Condition Ill 2 of the February 9, 1994 draft permit be modified to eliminate certain parameters. This
condition has been eliminated all together with respect to this permit issuance.
'iris permit shall be effective from the date of issuance until April 30, 1999, 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.
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

One set of approved plans and specifications is being forwarded to you. If you need additional
information concerning this matter, please contact Ms. Angela Y. Griffin at [phone].
Sincerely,
A. Prest Howard, Jr., P.E.
cc: Carteret County Health Department
Triangle Environmental, Incorporated
Wilmington Regional Office, Water Quality Section
Wilmington Regional Office, Groundwater Section
Jack Floyd, Groundwater Section
Training and Certification Unit
Facilities Assessment Unit

NORTH CAROLINA
ENVIRONMENTAL MANAGEMENT COMMISSION
DEPARTMENT OF ENVIRONMENT, HEALTH AND NATURAL RESOURCES
INFILTRATION GALLERY 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
Aviation Fuel Terminals, Incorporated
Carteret County
FOR THE
construction and operation of a 30,000 GPD groundwater remediation treatment and disposal facility by
means of spray irrigation consisting of a 180 gallon oil/water separator, a 1,128 gallon four (4)
compartment in series aeration basin with each basin containing a 4.5 hp blower, a 1,100 gallon
equalization/pumping tank, all other associated pumps, valves and appurtenances with the ultimate
disposal to approximately 15,000 square feet of spray irrigation area to serve Aviation Fuel Terminals,
Incorporated's treatment of groundwater remediation and tank bottom wastewater at the Fort Macon Street
facility in Beaufort, North Carolina with no discharge of wastes to the surface waters, pursuant to the
application received May 20, 1993, 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 April 30, 1999, and shall be subject to
the following specified conditions and limitations:
I. PERFORMANCE STANDARDS
1. 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. Mail the Certification to the Water Quality
Permits and Engineering Unit, P.O. Box 29535, Raleigh, NC 27626-0535.
2. The Wilmington Regional Office, telephone number [phone], shall be notified at
least forty-eight (48) hours in advance of operation of the installed facilities so that an in -
place inspection can be made. Such notification to the regional supervisor shall be made
during the normal office hours from 8.00 a.m. until 5:00 p.m. on Monday through Friday,
excluding State Holidays.

3. The spray irrigation 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
Environmental Management, such as the construction of additional or replacement
wastewater treatment and disposal facilities.
4. 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.
5. In the event that the facilities fail to perform satisfactorily, including the creation of
nuisance conditions, the Permittee shall take immediate corrective action, including those
actions that may be required by this Division, such as the construction of additional or
replacement treatment or disposal facilities.
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. Any 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.
8. Diversion or bypassing of the untreated groundwater from the treatment facilities is
prohibited.
II. OPERATION AND MAINTENANCE REQULREMENT-S
l . 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 each Class I facility at
least weekly and each Class II, III, and IV facility at least daily, excluding weekends and
holidays, and must properly manage and document daily operation and maintenance of the
facility and must comply with all other conditions of Title 15A, Chapter 8A, .0202. Once
the facility is classified, the Permittee must submit a letter to the Certification Commission
which designates the operator in responsible charge within thirty days after the wastewater
treatment facilities are 50% complete.
3. 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.
4. Irrigation shall not be performed in such a manner that will cause runoff.
5. Adequate measures shall be taken to prevent wastewater runoff from the spray field.
6. The instantaneous application rate not to exceed 20.0 inches per hour.
7. No type of wastewater other than that from Aviation Fuel Terminals, Incorporated
groundwater remediation facilities shall be sprayed onto the irrigation area.
2

8. No traffic or equipment shall be allowed on the disposal area except while installation
occurs or while normal maintenance is being performed.
9. Public access to the land application sites shall be controlled during active site use. Such
controls may include the posting of signs showing the activities being conducted at each
site.
1. 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. 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
directly to receiving waters without treatment 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.
Monitor wells MW-102, MW-4, and MW-6 shall be sampled every February and August
for the following parameters:
pH
Water Level
EPA Method 610
EPA Method 602 (including Xylenes)
Floating Product Thickness
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.
3

2. The effluent shall be sampled once every two (2) weeks for the first three (3) months and
quarterly thereafter for the following parameters:
EPA Method 602 (including Xylenes)
EPA Method 610
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 within 30 days of
sample collection.
3. The groundwater treatment system shall consistently achieve at least a 95% treatment
efficiency (i.e. remove 95% of the influent contaminants) prior to discharge to the injection
wells. If the treatment system fails to consistently achieve this standard, additional
treatment units or changes in operational methods, may be required.
4. Isoconcentration (lines connecting points of equal concentration) maps in both the vertical
and horizontal directions shall be developed using the semiannual groundwater monitoring
data for BTEX. A water level contour map must also be developed on a semiannual basis.
These maps shall be submitted along with all other monitoring data for that period.
5. The COMPLIANCE BOUNDARY for the disposal system is specified by regulations in
15A NCAC 2L, Groundwater Classifications and Standards. The Compliance Boundary is
for the disposal system constructed after December 31, 1983 is established at either (1) 250
feet from the waste disposal area, or (2) 50 feet within 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 BQJJNDARY 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.
6. Any additional groundwater quality monitoring, as deemed necessary by the Division, shall
be provided.
7. All components of the groundwater recovery, treatment and disposal system shall be
properly weather -proofed to prevent freezing and failure of the system.
8. The groundwater recovery, treatment and disposal system shall be inspected weekly. If it
is determined that the system is malfunctioning, all repairs should be made as soon as
possible and reported to the Wilmington Regional Office within 48 hours.
9. All wells that are constructed for purposes of groundwater monitoring shall be constructed
in accordance with 15A NCAC 2C .0108 (Standards of Construction for Wells Other than
Water Supply) and any other state and local laws and regulations pertaining to well
construction.
V . INSPECTIONS
1. Adequate inspection, maintenance and cleaning shall be provided by the Permittee to insure
proper operation of the subject facilities.
4

2. The Permittee or his designee shall inspect the groundwater recovery and treatment
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.
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.
4. A set of approved plans and specifications for the subject project must be retained by the
Pen- ittee for the life of this project.
5. 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).
6. 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 peanut as specified by 15A NCAC 2H .0205
(c)(4).
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.
5

S. 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 31 st day of May, 1994
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
A. Preston goward, Jr., P.P., Director
Division of1grivironmental Management
By Authority of the Environmental Management Commission
Permit No. WQ0007927
0

Permit No. WQ0007927
May 31, 1994
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, , for the
Project Name Location
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.

MW-I01
Petroleum Storage Tank Petroleum Storage Tank
Mw- l
MW-102
Petroleum rage Tank Petroleum Storage Petroleum Storage }
Tank Tank 1� RC-C
MW-2
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MW-3 Fence
4 MW -Z ;
MW-9
i MW-7
Petrol Storage Tank rPetroleum Storage petroleum Storage r
1 Tank ' . Tank SMW-25
MW-23 � MW` 1,�� ----.� R —
i r RC-B : -21 MW 27 J
-8 MW-5 MW-22 MW-17 MW-26
AV 0 S
MW-18MW-5 -MW-4 IA
Dirt Road
MW-IS
S - Monitoring Well Location
Recovery Well Location
Froject:
Beaufort Aviation Fuel Terminal
Beaufort, North Carolina
Title: Monitoring Well Location Map
Job: Figure: Scale:
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s
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RATING SCALE FOR CLASSIFICATION OF FACILITIES
Name of Plant: I�L� fOt�'�L{�� t r t� � 1 C9 _), ,cal C 7_ ,nr-.
Owner or Contact Person: 4P5,feC ,r E %L
Mailing Adddress:� 3 DX !g PCi[�T& L'�d
County: l 4.` Pete ��~ _ Telephone:
NPDES Permit No. NC00 Issue Date:
Expiration Date:
Water Quality Permit No.WQ00D-7 71ssue Date:
Expiration Date:
Rated By: Cc Date: —
Reviewed By (Regional WWTPC):
Reviewed By (Train & Cert):
ORC: Grade:
Plant Class (circle one) G II III IV
ITEM POINTS
Industrial Pretreatment Units and/or 4
Industrial Pretreatment Program
(See Definition No. 33)
DESIGN FLOW OF PLANT IN GPD
(Not applicable to non -contaminated cooling
waters, sludge handling facilities for water
purification plants, totally closed cycle
systems (definition No. 11), and facilities
consisting only of item (4)(d) or
T ms (4)(d) and (11)(d).
0 -- 20,000................................ 1
20,001 -- 50,000........................I.......10
50,001 -- 100,000..............I..................3
10D,001 -- 250,000.................................4
250,001 -- 500,000.................................5
500,001 -- 1,000,000.................................a
1,000,001 -- 2,000,000................................10
2,000,001 (and up) -- rate 1 point additional for each
200,000 GPD capacity up to a
maximum of 30
Design Flow (GPD): 3'� or)-o
PRELIMINARY UNITS (See definition No. 32)
(a)
Bar Screens ............................
............
I
or
(b)
Mechanical Screens, Static
Screens or
Comminuting Devices................................2
or
(c)
Grit Removal.......................................I
or
(d)
Mechanical or Aerated Grit
Removal. ........
....... 2
(e)
Flow Measuring Device ..............................I
or
(f)
Instrumented Flow Measurement ......................2
(9)
Preaeration........................................2
(h)
Influent Flow Equalization
.........................2
(i)
Oil or Grease Separators --
Gravity ............
__. 27
Mechanical.........
.
DAF....................8
] P" `RY TREATMENT UNITS
( eptic Tank (See definition No. 43)................2
(. mhoff Tank........................................5
(c) Primary Clarifiers.................................5
(d) Settling Ponds or Settling Tanks for
Inorganic Nontoxic Materials (sludge
handling facilities for water purification
plants, sand, gravel, stone, and other such
mining operations except recreational
activities such as gem or gold mining..............2
(5) SECONDARY
TREATMENT UNITS
(a) Carbonaceous
Stage
(i)
Aeration _ High Purity Oxygen System ........
2
Diffused Air System............
Mechanical Air System (fixed,
floating, or rotor)..............8
Separate Sludge Reaeration........
3
(ii)
Trickling Filter - High Rate.................7
Standard Rate.............5
Packed Tower..............5
(iii)
Biological Aerated Filter or Aerated
Biological Filter... .......................
10
(iv)
Aerated Lagoons . ...........................10
(v)
Rotating Biological Contactors..............10
(vi)
Sand Filters - Intermittent Biological .......
2
Recirculating Biological ......
3
(vii)
Stabilization Lagoons ........................5
(viii)
Clarifier .......... .........................5
(ix)
Single stage system for combined
carbonaceous removal of HO❑ and
nitrogenous removal by nitrification
(See definition No. 12) (Points for
this system are in addition to items
(5)(a)(i) through (5)(a)(viii)...............8
(x)
Nut_'ent Additions To Enhance BOD Removal .... 5
(xi)
Bio:=gical,Culture ("Super Bugs") addition
to enhance organic compound removal ......... 5
(b) NitrogenoLa Stage
(i)
Aeration - High Purity oxygen System ........ 20
Diffused Aeration. ............... 10
Mechanical Air System (fixed,
floating, or rotor)..............8
Separate Sludge Reaeration...... ..3
(ii)
Trickling Filter - High Rate.................7
Standard Rate.............5
Packed Tower..............5
(iii)
Bio'�;gical Aerated Filter or Aerated
Biological Filter .. .......................10
(iv)
Rotating Biological Contactors..............10
(v)
Sand Filter - Intermittent Biological ........ 2
Recirculating Biological ....... 3
(v!)
Clarifier....................................5
(6) TERTIARY OR A:�';ANCE TREATMENT UNITS
(a)
Activated :arbon Beds -
Without Carbon Regeneration..............5
with Carbon Regeneration. ...............
15
(b)
Powdered or Granulated Activated Carbon Feed -
,:ithout Carbon Regeneration... ...........
5
with Carbon Regeneration................15
(c)
Air Stripp'ng......................................5
(d)
Denitrification Process (Separate Process)— ......10
(e)
Electrodiz_ysis....................................5
(f)
Foam Sepazation....................................5
(9)
Ion Exchan=e.......................................5

(h)
Land Appl cation of Treated Effluent
'See Defir,_tion No. 22b) (Not Applicable For
and, gravel, stone, and other similar mining
Aerations`
(i) On Agriculturally Managed Sites (See
Definition No. 4).........
10
(ii) By Yigh Rate Infiltration On Non -
Agriculturally Managed Sites (IncludEt
Rotary Distributors and Similar Purpc-a
Fixed Nozzle Systems).........
.......
(iii) By Subsurface Disposal (Includes L.-4
0
Pressure Pipe Systems and Gravity
Systems Except Plants Consisting Of
5ept'_c Tank and Nitrification Lines Only)
.... 4
(i)
Microscreers........................................5
fj)
Phosphorus Removal By Biological Process
(See Defi::ition No. 26).....
(k)
Polishing Ponds - Without Aeration.......
.20
With Aeration., ..................5
(1)
Post Aeration - Cascade ......... .. .........
0
(m)
Diffused or Mechanical.........
Reverse osmosis
..5
(n)
...............
Sand or Nixed Media Filters - Law Rate.............2
5
High Rate ............
5
(o)
Treatment Process For Removal of Metal
OrCyanide.......................................15
(p)
Treatment Process For Removal Of Toxic
Materials Other Than Metal Or Cyanide ............
15
SLUDGE TREATMENT
(a)
Sludge Digestion Tank - Heated. ...................
10
Aerobic....................5
Unheated-- ...............3
(b)
Sludge Stabilization (Chemical or Thermal) ........
10
(c)
Sludge Drying Beds - Gravity.......................2
Vacuum Assisted...............5
(d)
Sludge Elutriation.................................5
(e)
Sludge Conditioner (Chemical or Thermal) ...........
5
(f)
Sludge Thickener (Gravity).........................5
(,
%ssolved Air Flotation Unit (Not Applicable
PC A Unit Rated As(3)(1))........................8
Mudge Gas Utilization (Including Gas Storage).....2
(i)
Sludge Holding Tank - Aerated...... ................
5
Non -aerated...
2
(j)
Sludge Incinerator (Not Including Activated
Carbon Regeneration)......... o...................10
(k)
vacuum Filter, Centrifuge, Filter Press or
other similar dewatering devices.................10
SLUDGE DISPOSAL (Including Incinerated Ash)
(a) Lagoons . ........... ..... .............2
(b) Land Application (Surface and Subsurface) (See
Definition No. 22a)
Where the facility holds the land application
permit .......................... ............10
- By contracting to a land application
operator who holds the land application
permit.... .... .. .........................2
Land application of sludge by a contractor
who does not hold the permit for the
wastewater treatment facility where the sludge
is generated...................................10
(c) Landfill (Burial)..................................5
DISINFECTION
(a) Chlorination.......................................5
(b) Dechlorination ........................ ..........5
(c) ozone.. ...........................................5
(d) Radiation..........................................5
CHEMICAL ADDITION SYSTEM(S) (See Definition No. 9)
(Not Applicable to Chemical Additions Rated As Item
(3)(j), (5)(a)(xi.), (6)(a), (6)(b), (7)(b), (7)(e),
(9)(a), (9)(b), or (9)(c) 5 points each. LIST:
................5
.....................5
.....................5
.....................5
(11) MISCELLANEOUS UNITS
(a)
Holding Ponds, Holding Tanks, or Settling
Ponds
For Organic or Toxic Materials
Including Wastes From Mining Operations
Containing Nitrogen and/or Phosphorus
Compounds in Amounts Significantly Greater
Than
(b)
Is Common for Domestic Wastewater).. ...,,,•,,,4
Effluent Flow Equalization (Not Applicable
To Storage Basins Inherent To Land
Application Systems)....,,
(c)
Stage Discharge (Not Applicable To Storage
2
( )
Basins Inherent To Land Applic
Pumps ation Systems).....
5
(0 )
Standbyy Power Supply,....• .......................
(f)
Thermal Pollution Control Device
...................3
TOTAL POINTS
CLASSIFICATION
Class I.......,.
5 - 25 Points
Class lI.....,..,,.. 26 _ 50 Points
Class III ................ „ 51 - 65 Points
Class IV........................66 - up Points
Facilities having
inclusive, donotrequirating re acertified opera or. Classif cationtof
all other facilities requires A comparable grade operator in
responsible charge.
Facilities hav_ng an activated sludge process will be
assigned a minimum classification of Class II.
Facilities having treatment processes for the removal of
metal or cyanide will be assigned a minimum classification of
Class II.
Facilities having treatment processes for the biological
removal of phosphc.-us will be assigned a minimum classification
of Class III.

RhTING SCALE FOR CLASSIFICATiON OF WATER POLLUTION CONTROL SYSTEMS
Name of Fac}I)iy: AV LL
Owner or Contact Person: /.
Mailing Address: I Z *
county: Telephone — S
Present Classification: New Facilityy Existing Facility
NPDES Per. No. NC00 Nondisc. Per. No.WQX09427 Health Dept.Per No.
Rated by: -.4, 1 Telephoner" Date: 74742W. AM
Reviewed by: Health Dept. Telephone:
Regional Office Telephone:
Central Office Telephone:
ORC: Grade: Telephone:
Check Class ification(s): Subsuye Spray Irrigation L� Land Application
Wastewater Classification: {Circle One l I 1 II ' III IV Total Points:
NOT BE Q0\3I0ERED WASTE TREATMENT FOR THE PU_A_POSE OFQ_ASSIFICATIUN ALSO SEPTICTANK SYSTEMS C4X\1SfSTING
QN1LY OF S nC TANK AND GRAY=.UIRlFtCA.T#ON LINES ARE FXEMPT FROM CIASSIEKAi-ION.
SUBSURFACE CLASSIFICATION
(check all units that apply)
1, seplic tanks
2. pump tanks
3. siphon or pump -dosing systems
a._ sand tillers
5. grease trapholerceplor
citlwater separators
gravity subsurface treatment and disposal:
a, pressure subsurface treatment and disposal
SPRAY IRRIGATION C1 ASSiFICAT}ON
(check al€ units that apply)
I. —preliminary treatment (definition no. 32 }
2. lagoons
3. septic tanks
4.pump tanks
5. pumps
6. sand filters
7. grease trapTinterceptor
8. ✓ oil/water separators
9. disinfection
M.—chemical addition for nutrient/algae control
11. ✓spray irrigation of wastewater
In addition to the above 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 APPLICA T ION/RESIDUALS CLASSIFICATION (Applies only to permit holder)
1. Land application of biosolids, residuals or contaminated soils on a designated site,
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WASTEWATER TREATMENT FACILITY:' CLASSIFICATION
The following systems shatl be assigned a Class 1 classificalion, uMess the f3ow is of a significant quant;ly or the technology is
unusually complex, to require consideration by the Commission on a case -by -case basis; (Check if Appropriate)
1. Oil/water Separator Systems consiisling only of physical separation, pumps and disposal;
2. Septic Tank/Sand Filter Systems consisling only of septic tanks, dosing apparatus, pumps,sand fillers, disinfec!ion
and direct discharge;
3. Lagoon Systems consisting only of preliminary treatment, lagoons, pumps, disinfection, necessary chemical
lrealmenl for algae or nutrient confroi, and direct discharge;
4. Closed -loop Recycle Systems;
5.—K--Groundwaler Remedialion Systems consisting only of pumps, air -stripping, carbon adsorption, d€sinfeclion and
disposal;
6. Aquacuilure operations with discharge to surface wafers;
Water Plant sludge Handling and back -wash water Ireatmer'.;
Seafood processing consisting of screening and disposal.
Si. Single-family discharging systems, vAlh the exception of Aerobic Trealment Units, will be classified if permilted
alter July 1, 1993 or if upon inspection by the Division, it is found that the system is not being adequately operated
or mainlained. Such systems will be nolified el the classiticalion or reclassilicalion by the Commission, in writing.

llirr tt)IlL)vvuty. 5ualc IJ USt;u wi ,sting wastewater eatment laciiities: (circle appropriate
points)
ITEM - POINTS
(1)
Industrial Pretreatment Units or industrial Pretreatment Program (see definition No. 33)...................................................4
(2)
DESIGN FLO`,v OF PLANT IN god (not applicable to non -contaminated woiiag waters, sludge handling -
facilities
for water purification plants, lolaliy closed cycle syslens(see deriniiion No. 11), and lacilflies
consisting
only of 11em (4)(d) or Items (4)(d) and (11)(d))
0 - 20,000:....................................:..................--.....................................................................................1
20,001 - 50,000.......................................................................................................................................2
50,001 - 100,000.....................................................................................................................................3
100,001 250,000 ...................................................................................................................................4
250,001 500.000....................................................................................................................................5
-
soo,001 1,000,b00................................................................................................................................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
maximumof........................................................................30
Design Flow (gpd)
(3)
PRELIMINARY UNrTSIPROCESSES (see definition No.32)
(a)
Bar Screens...............................................................................................................................................1
or
(b)
Mechanical Screens, Static Screens or Comminuting Devices...........................................................................2
(c)
Grit Removai..............................................................................................................................................I
or
(d)
Mechanical or Aerated Grit Removal.............................................................................................................2
(e)
Flow Measuring Device................................................................................................................................1
or
(t)
Instrumented Flow Measurement................................................................................................................2
(g)
Preaeralion.......................... ...................................................................................... ........................ ........
(h)
Influent Flow Equalization..........................................................................................................................2
(F)
Grease or Oil Separators - Gravity.................................................................................................................2
Mechanical.................................................................................................................................................3
DissolvedAir Flotation................................................................................................................................8
(i)
Prechlorinalion..........................................................................................................................................5
(4)
PRIMARY TREATMENT UrqrrS/PROCESSES
(a)
Septic Tank (see definition No. 43)............................................................................................................2
(b)
Imhoff Tank...............................................................................................................................................5
(c)
Primary Ciariliars..:............. .......................................................................................................................... 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
acINWes such as gem or gold mining).........................................................................................................2
(5)
SECONDARY
TREATMEW UNITSrPROCESSES
(a)
Carbonaceous Stage
(i) Aeralion-High Purity Oxygen System...............................................................................20
DiffusedAir System.......................................................................................................1
0
Mechanical Air System (fixed, floating or rotor).. ................................................................
B
Separate Sludge Reaeralion.......................................................:.....................................3
(ii) Trickling Fttler
HighRate...........................................................................................I..........................3
StandardRate................................................................................................................5
PackedTower.................................................................................................................5
(iii) Biological Aerated Filter or Aerated
BiologicalFilter.............................................................................................................1
0
(iv) Aerated Lagoons..........................................................................................................10
(v) Rotating Biological Contactors .............................. .........................................................
10
(vi) Sand Fillers -intermittent biological..................................................................................2
Recirculatingbiological.....................................................................................................3
lull) Stabilization Lagoons.....................................................................................................5
(viii) Clarifier...........................................................................................................................5
(ix) Single stage system for combined carbonaceous removal of BOD and Hirogenous
removal by nitrification (see definition No. 12)(Poims for this item have to be in
addition to Items (5)(a)(i) through (5)(a)(viii),
utilizing the extended aeration process (see definition No.3a)...........................................2
utilizing other than the extended aeration process............................................................a
(x ) Nutrient additions to enhance BOD removal......................................................................5
(xi) Biological Culture ('Super Bugs')addition........................................................................5
(b)
Nitrogenous Stage
(i) Aeration - High Purity Oxygen System.............................................................................20
DiffusedAir System....................................................---................................................10
Mechanical Air System (fixed, floating or rotor)..................................................................8
SeparateSludge Reaeration.............................................................................................3
00 Trickling Filter -High Rate ....... ............................................................................................
7
StandardRate...............................................................................................................5
PackedTower.................................................................................................................5
(iii) Biological Aerated Filter or Aerated Biological Fiiler.............................................................10
(iv) Roialing Biological Conlaclnrs......................................................................................10
(v) Sand filter - intermittent bioiogical...................................................................................2
Recirculating biological ........... ...................... .................................................. .................
3
(vi) CL-Alar...........................................................................................................................5
(6}
TERTIAFNORADVANCED TREATMENT UNITS/PPOCESSES
(a)
Activated Carbon Beds -
wilhoul carbon regeneration....................................................................................................5
wlth carbon rogenoralion.......................................................................................................15
(b)
Powdered or Granutar.gciivatad Carbon Food-
4
without carbon regeneration.................................................................................................5
with carbon regeneration. .................................................. ........................................... _..
_. 115
(c)
Air stripping ....... ....................................... ........ ...... I ....... .......... ........... ................ ' ...........5
(d)
Denflrification Process... ....... r ..... ­ ................ ............................. ...................... ............ ..................... 10
(a)
Electrodialysis........................................................................ ....._..................... ......5
(I)
Foam Seoaralion.......................................................................................................................................5

ccul lttc+l appucaote for sand,
gravel, stone and other similar mining operations) by high rate Infiltration......................................................4
(i)
Microscreens....................................................................................................-........................................5
(j)
Phosphorous Removal by Biological Processes (See definition No. 26).........................................................20
(k)
Polishing Ponds - without aeration............................................................................................................2
withaerailon............................... ........................................,....,,..............:....................5
(1)
Post Aeration - cascade..............................................................................................................................0
diltused or mechanical........................................................................................................2
(mJ
Reverse Osmosis...........................................:.............................................................................................5
(n)
Sand or Mixed -Media Filters - low rate.........................................................................................................2
.- high rate.....................................................................5
(o) ,-,
Treatment processes for removal of malal or cyanide...................................................................................15
(p)
a treatment processos for removal of toxic materials other than metal or cyanide ...............
(7)
SLUDGE TREATMENT
(a)
Sludge Digestion Tank - Healed (anaerobic)...............................................................................................10
Aerobic............................................................................................................................I.................5
Unheated(anaerobic)....................................................................................... .......... .......3
(b)
Sludge Stabilization (chemical or thermal)...................................................................................................5
(c)
..........................
Sludge Drying Beds - Gravity.................................................-....................................... ...2
VacuumAssisted ............................. ..........................................................................................*...............5
(d)
Sludge Elutriation......................................................................................................................................5
(6)
Sludge Conditioner (chemical or thermal).....................................................................................................5
(1)
Sludge Thickener (gravity)..........................................................................................................................5
(g)
Dissolved Air Flolation Unit (not applicable to a unit rated as(3)(1)].............................................................8
(h)
Sludge Gas Utilization (including gas storage).............................................................................................2
(€)
Sludge Holding Tank - Aeraled....................................................................................................................5
Non-aerated.............................................................................................................................................2
j }
Sludge Incinerator (not Including activated carbon regeneration)................................................................1 0
(k)
Vacuum Filter, Centrifuge, or Filler Press or other similar dewatering devices...................................................10
(8)
RESIDUALS UTILt7ATJONID1SPOSAL (including 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 or landfill permit...............................................................................................................2
(c)
Dedicated Landlili(buijW) by the permittee of the wastewater treatment facility...............................................5
(9)
DGNFEC
T)CN
(a)
Chlorination............................................................................................................................... .........5
(b)
Dechlorinalion......... ...................... ................ ............................................................................................ 5
(C)
Ozone...................................................................................................................... 5 ..... . ...........................
(d)
Radiation..................................................................................................................................................5
(10)
CHEMICAL
ADDITION SYSTEM(S) ( see definition No. 9) (not appiicable to chemical additions rated as Item
(3)(j),
(5)(a)(xi), (6)(a), (6)(b), (7)(b), (7)(e), (ga), (9)(b) or (9)(c) 5 points each:
List_.....................................
........................................ .... ...................................................... 5
....................................................................................................................................5
...........................................................................................................................5
.....................................................................................................................5
(1 1)
MISCELLANECUS UNITSIPROCESSES
(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 Equalization (not applicable to storage basins which are inherent in land application
systems)...................................................................................................................................................2
(c)
Stage Discharge (not applicable to storage basins inherent in land application systems)..................................5
(d)
Pumps......................................................................................................................................................3
(e)
Stand -By Power Supply ........... .............. ................................................................................................
(l.)
Thermal Pollution Control Device.................................................................................................................3
TOTALPOINTS ................. :.........................................................
CLASSIFICATION
Class I...........................................................................................................5-25 Points
Class11.... ....................................................................... ............................. 26-50 Points
Ck2csE11.................................... ................ .................................................... 61-65 Points
ClassIV.......................................................................................................66-Up Points
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acililies having a rating of one through lour points, inclusive, do not require a certified operator.
acilities having an activated sludge process will be assigned a minimum classification of Class 11.
acuities having treatment processes for the removal of metal or cyanide will be assigned a minimum classification of Class II.
acililies having treatment processes for the biological removal of phosphorus will be assigned a minimum classification of Class ill,
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Oo4 DEWTIONS
to loliowing derrrrtions shall apply throughout this Subchapter.
) Activated Carbon Beds. A physicallchemical mevuod for reducing soluble organic material from wastewater effluent; The column -type beds used in this method will have
flow rate varying Irom two to eight gallons per minute per square loot end may be either uptow or downhow carbon bads. Carbon may or may not be regeneraled on tlne
sslewaler treatroanl plant site;
) Aerated Lagoons. A basin in which all solids are maintained in suspension and by which biological oxidation or organic matter is reduced through artificially accetefaled
,nafer of oxygen on a flow -through basis;
I Aeration. A process of bringing about intimate contact bolwaen air or high purity oxygen in a liquid by spraying, agitation or diHusion;(3a) Extended Aeration. An
tivaV ' 'udge process utilizing a minimum hydraulic delention time of 19 hours.
A rally managed site. Any sqe cn which i crop is produced, managed, and harvesled (Crop includes grasses, grains, trees, otc,):
Ai ping. A process by which the ammonium ion is first convened to dissolved ammonia (pH adjusvnenl) with the ammora then reivased to the atmosphere by
ysicat means; or other simaar processes which remove petroleum prod c s such as benzene, toluene, and sylane;
1 Carbon Regeneration, Thu regeneration of axhausled carbon by the use of a turnace to provide extremely high temperatures which volatilize and oxidize the absorbed
purifies;
i Carbonaceous Stage. A stage of wastewaler vealmant designed to achieve "secondary- affluent limits;
Cenviluge. A mechanical device in which centr'Ivgat !once is used to separate solids r:nnt iiquds or to separate liquids of different dansides;
Chemical AddGion Systems- The addition of chemieal(s} to waslawalor at an application pant for purposes of improving solids removal, pH adjustment, alkalinity cmlrol,
,; the capability 10 experiment with dWorent chanvcals and dllarent application points to achieve a specific result wilt be considared one syslem; the capabiliry to add

chemical(s) to dual units will be rated as one system; capability to add a chernicai at a different application points lot difteranl purposes will resell In the systems being
rated as separate systems:
(to) Comical Sludge Conditioning. The addition of a chemical compound such as lime, ferric chloride, or a polymer to wet sludge to coalosco the mass prior to its
app!icalion to a dawalaring device;
(th) Closed Cycle Systems. Use of holdng ponds or holding lanXs lot containment or wastewater containing iriorgaric, non -toxic materials hem sand, gavel, crushed
stone or other similar operations, Such systems shall carry a rhlaximum or two points regardless of pumping facifftes or any other appurtenances;
(12) Combined Removal of Carbonaceous BOG and Nitrogenous Removal by Nitrification- A single stage system required to achieve parmil eftiuent limits on DOD and
ammonia Nitrogen within the same biological reactor;
(13) Dechlorinalion. The partial or complete reduction of residual chlorine In a liquid by any chemical or physical process;
(1,4) Denitrocalion Process. The conversion o, nitrate-a;apGar, to nitrogen gas;
(15) Elecirodcalysis. Process for rrrnoving ionized salts from v:ater through the use of Ion-seiective Ion -exchange membranes;
(16) Filler Press. A process ote.etud mecharrcally for pbrlially dawalering sludge; -
(17) Foam Separation. The pWtad frothing of wastewater or wastewater-efttuerrt as a means of removing excessive amounts of detergent materials through the
introduction or air in the form of fine bubbles; also called foam fractionation;
(18) Grit Removal. The process or removing grit and ether heavy trneral matter frorn wastewater;
(t9) Imhof: Tank. A deep two story wastewater lank consisting of an upper sedimentation chamber and a lewev sludge digestion chamber.
(20) lnstrumented'Flow Measurement A device which indicates and records rate of flow;
(21) Ion Exchange. A chemical process in which Ions from two different molaculas are exchanged;
(22) Land application:
(a) Sludge Disposal. A final sludge disposal method by which wet sludge may b-ar applied to land either by spraying on the surface of by subsurface Ir�acSon (i.a.,
cltisol plow); [not applicable for;ypes of sludge described in (11) of this Rural;
(b) Treated EfffuerL The process of spraying treated wastewater onto a land area or other methods of application of wastewater We a land area as a means of Trial
disposal or treatment:
(23) llricrosereen. A low speed, continuously back -washed, rotating drun filter operating under gravity conditions as a perishing rrtelhod for removing suspended solids
from effluent;
(24) Nilrilicalion Process. The biochemical conversion of unoxidized nitrogen (ammonia and organic nilrogan) to oxidized nitrogen (usually riitrato);
(25) Nitrogenous Stage, A separate stage of wastewater treatment designed for the specil;c purpose or converting ammonia nitrogen to nitrate nitrogen:
(26) Phosphate Removal, &ologica!_ The removal of phosphorus from wastewater by an oxic/anoxic process designed to enhance luxury uptake of phosphorus by the
microorganisms;
(27) Polishing Pond. A Wclin0 pond follawlrig secondary treatment with sufficient dolention time to allow setting of Finely suspended solids;
:28) Post Aeration. Aeration loliovdng conventional secondary noalmonl units to increase atlusn; D.O. or lot any other purpose:
29) Post Aeration. (Cascade) A p0iicling mt.thod by which dissolved oxygen is added to the e0varnt by a normacharical, gravity means or flomng down a series of
slaps or weirs: 'The flow occurring across the steps or weirs moves in a lairly thin layer and the operation of the cascade requfras no operator adustnent; thus, zero
points are assigned avert though this is an assanfial step to meeting lho limits of the discharge permit;
(30) Powdered to Granular Activated Carbon Feed A biophysical carbon process teal utilizes biological activity and organic absorption by using powderad or granular
attivaled carbon; Virgin a regenerated carbon is lead controlled into the system;
(31) Pisaeraflon. A tank constructed to provide aeration prior to primary treatment;
(32) Preliminary Units. Unit operations in the treatment process, such as screening and commMon, trial prepare the liquor for subsequent mayor operations;
(33) industrial Pretreatment.
;a) Pra t[eath ant U it, Indusdial. Tha condtioring of a waste a[ its so xce before discharge, to remove rx fo ne riraliza substances injUriays to sewers and treatment
processes or to elfecl a partial reduction In load on the treavr:ent process which is operated by the same governing body as the wastewater treatment plant being
rated;
b) Pre-troalmont Program, Industrial - must be a Stale or EPA required program to receive points on the rating sheet;
p34) Primary Clarifiers. The first settling tanks through which wastewater is passed in a treatment woks for the purpose of removing settleable and suspended solids and
DOD which is associated with the solids;
(35) Pumps. All infuenl, effluent and in -plant pumps;
(36) Radiation. Disinfection or sleri0alion process Wiring devices emitting ultraviolet or gamma rays,
(37) Reverse Osmosis. A treat -non', process in which a heavy contaminated ligtr[d is pressurized through a membrane forming nearly pure liquid free Irom suspended sdiris:
(3E) Rolating Biological Contractors. A fixed biological gecrMh process in which wastewater flows through tanks in which o series of partially submerged circular surfaces
aro rolakad:
(39) Sand Filters:
(a) Intermittent Biological. Filtration of eflluenl follovring septic larks, lagoons, or some other treatment process in which fv'ttmr biodecompasilion is expected to
produce desired eflljenls; hydraulic loading rates on these fillers are computed In godiac and have a resulting low gprr✓sf (less 4)an ono);
b) P.ecirculatlng biological - the same ;ype oP sand filer as defined in Subparagraph (39) (a) or this Rule with the addt.d capability to recycle effluent back through the
sand filler:
(40) Sand or Kxed•Media Fillers. A polishing process by which effluent limits art. achieved through a further reduction of suspended solids;
(a) love rate -- gravity, hydraulically loaded filler with loading takes In the one to three gpmrsl range:
(b) high rate -- a pressure, hydraulically loaded filler wilh loading rates in the live gpmisf range; Al any rate, the loadng rate will exceed ltree gprvsr;
(;1) Sacnndwy CtariSars. A tank vehich follows the biological unit of troat-nsnl plant and which has the purpose of removing sludges associated with the biological
lrealmant units;
(42, Separate Sludge Reaaration. A part of the contact slabilization process where the attivaled sludge is transferred to a tank and aaraled before returning It to the
contact basin-
(43) Septic Tank. A singte-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 lamify residences having capacity of 2 00tl gallons cr less which discharga to a ritriflcallon Feld;
(4-;) Sludge Digestion. The process by which organic or volatile matter a,nd sludge is gasified, liquefied, mineralized or convened into more stable organic matter through
Cie activity of living orrvarisms, which includes aerated hording tanks;
(45) Sludge Drying Beds. An area comprising natural or artificial layers of porous materials upon which digested sewage sludge is dried b;i drainage and evaporation;
(46) Sludge Eiutriaiion. A process of sludge condtiorirg in which certain constiluenls are removed by successive washings with fresh water or plant effluent;
(47) Siudgo Gas Utilization. The process of using sewage gas for the purpose of heating buildings, driving engines, etc.;
(49) Sludga Holding Tank (Aerated and Nonaerated). A lank utilized for small wastewater treatment plants not containing a digester in which sludge may be kept fresh,
and supernatant willidawn prior to a drying method ){.a. sludge drying beds); This may be done by adding a small amount of air simply to keep Ir* sludge fresh, but riot
nacassarily an amours that would be required to achieve stabilization of organic matter. A nonaerated tank would simply be used to decant sludge prior to ciewal trig and
would not allow long periods (several days of datanten) without resulting odor problems;
(49) 51L,clgs Incinerators. A turnace designed to Grin sludge and to remove all meislure and combustiisle materials and reduce the sludge to a sterile ash;
(SO) Sludge StaGl'rzation (Chemical or The mai). A process to make treated sludge less odorous and pubescibfe, and to reduce W* pathogenic organism content; Tihis may
be Uno'by pH acqustrnent, chlorine dosing, w by ,heat treatment:
(51) Sludge Tliic',enor. A typo of sedimentation lank in which the sludge is permitted to settle and thicken through agitation and gravity;
(52) Slahilizalion Lagoon. A type or oxidation lagoon in which biological oxidation of organic matter is ellecled by natual transfer of oxygen to the water from air (not a
polishing pond):
(53) Stand -By Powar Supply. On site or portable electrical generating equipment;
(54) Slatic Screens_ A stationary screen designed to remove solids, includr,g nombiodogradable particulate (floatable, solids, suspended solids and DOD reduction) from
municipal and industrial wastewater treatmant syslems;
(S5) Tertiary Troatmoni. A stage of treatment following secoridary whleh is primarily for the purpose of effluent pofishfrg. A settling lagoon or sand or coal filler might be
employed for This purpose;
(56) Thermal Polhrtion Control Devica. A device providing for the transfer of heat from a nuid flowing in tubas to another Fuid outside the tubes, or vice versa; or other
means of regulating liquid 13mpeiatures:
(57) Thermal Siucigo Crnddonar, A conditioning process by which heal is added for a protracted period of lima to improve trw dowaterability or sludge by the solubilizirg
and hydraulizinc of the srnallar and more highly hydrated sludge panicles;
(55) Toxic Maler,als. Those wastes or combinations of wastes, including di sease-causing agents which after discharge and upon exposure, Ingaslion, inhalation or
assimilation into any orgarism, either directly from the envfronmhenl of indrec Cy by Ingaslion through food chains, will cause death, disease, behavioral abnormalities,
cancer, gentitir mutalioris, physiological malfunctions (inciudng maifuncb'ons in reproduction) or physical deformations, in such organisms or their offspring; Toxic materials
include, by way of illuslraton and not limitation: lead, cadmium, ctiromium, mercury, vanadium, arsenic, zinc, ortho-nitre-chiorobanzene (ONCB), polycNorinaled biphenyls
)PCBs) and dichlorociiphonyl tricNoroethane (DDT); and any other malo6als that have or may hereafter be detarmrned to have toxic properties;
(59) Trickling Filter. A biological l:aa:mant Unit cons'r:rr,g of a material such as broken stone or rock over which wastewater ks distributed: A high rate Iricklirg filter is one
wlvch oporalod at between 10 and 30 mgd per acre- A low rate trickling fitter is one which is designed to oeerate at one to four mgd per acre:
(PO) Trickling I'Mor (Packed Tov.,or)_ A plug Aow typo of operation in which wastewater lbws dovm Irvovgh successive layers of mad.a or Ovaie material; Organic material
is removed continually by the active olologicai fixed grovvi in each succassiva layer. This method may produce -secondary- quality ollluent. or may be adapted to
produce a nit7Mad aftluoni:
(61) Vacuum Filler, Cenairvgas. or Filler Presses_ Devices which are destgoocl to remove excess water from Hither digested or undigested sludge prior to disposal or
P,aaher lreatmart.