WQ0008963_Final Permit_19940415

State' of North Carolina
Department of Environment,
Health and Natural Res6urces
Division of Environmental Management
James B. Hunt, Jr., Governor
Jonathan B. Howes, Secretary
A. Preston Howard, Jr., P.E., Director
April 15, 1994
Mr. Tim Matt
Triple T Parts & Equipment Company, Inc.
Post Office Box 2064
Wilmington, North Carolina 28402
Subject: Permit No. WQ0008963
Triple T Parts & Equipment Co., Inc.
Equipment Washing Facility
Wastewater Recycle System
New Hanover County
Dear Mr. Matt:
In accordance with your application received February 2, 1994, we are forwarding herewith Permit
No. WQ0008963, dated April 15, 1994, to Triple T Parts & Equipment Company, Incorporated for the
construction and operation of the subject wastewater recycle system.
This permit shall be effective from the date of issuance until March 31, 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 North
Carolina General Statutes, and filed with the Office of Administrative Hearings, P.O. Drawer 27447,
Raleigh, NC 27611-7447. Unless such demands are made this permit shall be final and binding.
One set of approved plans and specifications is being forwarded to you. If you need additional
information concerning this matter, please contact Ms. Angela Y. Griffin at [phone].
Sincerely, n
oo.
A. Prest Howard, Jr., P.E.
cc: New Hanover County Health Department
Wilmington Regional Office, Water Quality
Impact Engineering, P.C.
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
RECYCLE 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
Triple T Parts & Equipment Company, Incorporated
New Hanover County
FOR THE
construction and operation of a 150 GPD wastewater recycle system consisting of a wash pad with
sediment basin, an ULTRASORB, Model LD system which consists of a pump station, aeration tower,
mechanical oil/water separator with a product storage tank, a multimedia filter which includes solids
filtration, granular activated carbon and hydrocarbon absorbing foams, a chlorinator, a polishing filter, an
ozone treatment unit, and a treated water storage tank and associated appurtenances and piping to serve
Triple T Parts & Equipment Company, Incorporated's Equipment Washing Facility, with no discharge of
wastes to the surface waters, pursuant to the application received February 2, 1994, 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 March 31, 1999, and shall be subject
to the following specified conditions and limitations:
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. The facilities shall be properly maintained and operated at all times.
4. 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 the request will be considered on its merits and may or may
not be approved.

17. 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).
18. 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.
19. A set of approved plans and specifications for the subject project must be retained by the
Pemtittee for the life of this project.
20. 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.
21. A leakage test shall be performed on the septic tank and dosing tank to insure that any
exfiltration occurs at a rate which does not exceed twenty (20) gallons per twenty-four (24)
hours per 1,000 gallons of tank capacity. The engineer's certification will serve as proof of
compliance with this condition.
22. 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, 111, 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.
3

23. 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 15th day of April, 1994
By Auttionty of the Environmental Management Commission
Permit No. WQ0008963
0
COMMISSION

Permit No. WQ0008963
April 15, 1994
1, , as a duly registered Professional Engineer in the State of North
Carolina, having been authorized to observe (periodically, weekly, full time) the construction of the
project, ,
Project Name
Location
for the
Permittee hereby state that, to the best of my abilities, due care and diligence was used in the observation
of the construction such that the construction was observed to be built within substantial compliance and
intent of this permit, the approved plans and specifications, and other supporting materials.
Signature
Date
5
Registration No.

ix
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t AJINtx SC:ALF_ FOR CLASSIFICATION OF WATER POLLUTION CONTROL SYSTEMS
Narne of facility: II'/aC / A&66
Owner or Contact Person: — -lir
Mailing Address: ce!66 BCC 2ao5�
ounty: A/Kly fiQ� C/Ozn' _ Telephone: 9/&)
Present Classification: New raciiitExisting Facility
NPDES Per. No. NOOO Nondisc. Per. No.WQf7U ^C Health Dept.Per No.
Rated by: A. 6' .n _Telephone: s, :EL,3Datejrr
Reviewed by. Health Dept. Telephone:
Regional Office Telephone:
Central Office Telephone:
ORC: Grade: Telephone:
Check Classification(s): Subsurface Spray Irrigation _ Land Application
Wastewater Classification: (Circle One) I II III IV Total Points: 028
-------------------------------------------------------------
Its-PLANT PROCESSES AND RELATED CONTROL EQUIPMENT WHICH A -ME AN INTEGRAL PART OF INDUSTRIAL PRODUCTION SHALL
NOT BE CONSIDERED WASTE TREATMENT FOR, THE PURPOSE OF CLASSIF)CATiON, ALSO SEPTIC TANK SYSTEMS CONS{STING
Qz J YQE SEPTIC TANK AND GRAVITY NITRIFICATION LINES ARE EZEMPT FR2d 2_ ISSIFICATION.
SUBSURFACE CLASSIFICATION
(check all units that apply)
1_ septic tanks
2, pump tanks
3. siphon or pump -dosing systems
4. sand filters
5.� grease traplinlerceplor
oillwater separators
__gravily subsurface treatment and disposal
pressure subsurface treatment and disposal:
SPRAY IRRIGATION CLASSIFICATION
(check all units that apply)
1.
preliminary treatment (definition no. 32 )
2,
lagoons
3.
seplic tanks
4.
pump tanks
5.
pumps
6.
sand filters
7.
grease traptnterceplor
B.
oil/water separators
9.
disinfeclion
10,
chemical addition for nulrieni/algae control
11.
spray irrigation of wastewater
In addition to the abase 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.
LAUD APPLICATION/RESIDUALS CLASSIFICATION (Applies only to permit holder)
1. Land application of biosolids, residuals or contaminated soils on a designated site.
-------------------------------------------------------------
WASTEWATER TREATMENT FACILIT1'CiASSiFICATQN
The following systems shall be assigned a Class I classification, unkP s the flow is of a significant quantity or the technology is
unusually complex, to require consideration by the Commission on a case -by -case basis: (Check if Appropriate)
1. Coil/water Separator Systems consisting only of physical separation, pumps and disposal;
2_ Septic Tank/Sand Filler Systems consisting only of septic tanks, dosing apparatus, pumps,sand tillers, 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. X Closed -loop Recycle Systems;
5. Groundwater Remedialion Systems consisting only of pumps, air -stripping, carton adsorplion, disinfection and
disposal;
6, Aquacuiture operations with discharge to surfarF waters;
Water Plant sludge 13andling and back -wash water Ireafmar';
Seafood processing consisling of screening and disposal.
Single-farnOy discharging systems, with the exception of Aerobic Treatment Units, will be classified it permitted
alter July 1, 1993 or if upon inspection by the Division, it is found that the system is not being adequately operated
or maintained. Such systems will be nolified of the classilicalion or reclassification by the Commission, in writing.

111G IVi I\l Yr ti II Jl.rQ rG iJ UOcv ,v, tQ%1'1y VYc1JLUVVdLCI S'. �.'dilll�lll IdC.l ll ltt''.5. (L.1f1;iL- i pprupr€aie
points)
ITEM POINTS
(1)
Industrial Pretreatment Units or Industrial pretreatment Program (see definition No. 33)...................................................4
(2)
DESIGN FLOW OF PLANT IN gpd {not applicable to non-ccnlaminaled cooling waters, sludge handling
facilities
for water purification plants, totally closed cycle sy sterrs(ses definition No. 11), and laciiiiies
consisting only of Item (4)(d) or Items (4)(d) and (11)(d)]
0 - 20.000..............................................................................---...................................................I......Q
20,001 - 50,000............................... :.................. ............................ ........................................ I ...............
2
50.001 100,000 .....................................................................................................................................3
100.001 250,000 ...................................................................................................................................4
250.001 500,000 ...................................................................................................................................5
500.001 - 1,000.000................................................................................................................................8
1,000,001 - 2,000.000...........................................................................................................................10
2,000,001 (and up) tale 1 point additional for each 200,000 gpd capacity up to a
max€mum of........................................................................30
Design Flow (gpd)
(3)
PRELIMINARY
UNITSIPROCESSES (sea dint€on No.32)
(a)
Bar Screens...............................................................................................................................................1
or
(b)
Mechanical Screens, Static Screens or Comminuting Devices..........................................................................2
(c)
Grp Removal.............................................................................................................................................1
or
(d)
Mechanical or As rated Grit Removal..............................................................................................................2
(o)
Flow Measuring Device ................................................................................................................................1
or
(1)
Instrumented Flow Measurement.................................................................................................................2
(9)
Preaeralion................................................................................................................................................2
(h)
Iniluent Flow Equalization........................................................................................................................ .2
(€)
Grease or Oil Separators - Gravify............................. :.................................................................................
Mechanical.._ ...... __ ....... ........................................................ ........................................................
DissolvedAir Flotation......................................................................................................................... ...B
( f)
Prechlorinalion..........................................................................................................................................5
(4)
PRIMARY TREATMENT UNI l-WROCESSES_
(a)
Septic Tank (see dafin4lon No. 43)............................................................:...............................................(Z
(b)
Imhoff Tank..............................................................................•---......:......................................................5
(c)
Primary Clarifiers_ .............................. ......................................................... ........................ .............. ......
5
(d)
Settling Ponds or Settling Tanks for inorganic Nan -toxic Maier€als (sludge handling facilities for
water purificatlon plants, sand, gravel, stone, and other mining operations except recreational
activilies such as gem or gold mining) ........................................................................................................2
(5)
SECONDARY TREATMENT UNITSrPROCESSES
(a)
Carbonaceous Stage
(€) Aeration -High Purity Oxygen System...............................................................................20
DiffusedAir System. .................... ....... ...... ............. ......... ................................... ...... 10
Mechanical Air System (fixed, floating or rotor)..................................................................8
Separate Sludge Reaeration.............................................................................................3
Trickling Filler
HighRate.......................................................................................................................7
StandardRate................................................................................................................5
Packed Tower ..................
(iii) Biological Aerated F€lieror Aerated
BiologicalFilter.............................................................................................................1 0
(iv) Aerated Lagoons..........................................................................................................10
(v) Rotating Biological Contactors ............. ..................................... ....................................
.10
(vi) Sand Filters -Intermittent biological .................. :.:............................ .............. I...................
Recirculatingbiological.....................................................................................................3
(vii) Stabilization Lagoons.....................................................................................................5
(viii) Clarifier...........................................................................................................................5
(ix) Single stage system for combined carbonaceous removal of SOD and nitrogenous
removal by nitrification (see definition No, 12)(Points 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 lhan the e):tended aeration process............................................................8
{z) Nutrient additions to enhance BOD removal......................................................................5
(xi) Biological Culture (-Super Bugs')addition........................................................................5
(b)
Nitrogenous Slags
(i) Aeration - High Purity Oxygen Systern.............................................................................20
DiffusedAir System.......................................................................................................1
0
Mechanical Air System (fixed, floating or rolor)..................................................................8
Separate Sludge Reaeralion.............................................................................................3
(ii) Trickling Filler -High Rate...................................................................................................7
StandardRate................................................................................................................5
PackedTower.................................................................................................................5
(iii) Biological Aerated !"flier or Aerated Biological Filler.............................................................10
(iv) Rotating Biological Conlactors......................................................................................10
(v} Sand Filter . intermittent biological...................................................................................2
Recirculatingbiological....................................................................................................3
(v€) CMier...........................................................................................................................5
(6)
TERTIARY OR ADVANCED TREATMENT UNITSrPROCESSES
(a)
Activated Carbon Beds -
without carbon rageneralion....................................................................................................
5
withcarbon regeneralion......................................................................................................15
(b)
Powdered or Granular Aclivalad Carbon Food,
without carbon regenaralion..................................................................................................5
with carbon regeneration.....................................................................................................15
(c)
Air stripping..................•................................. :............................................... ....1...
....5
(d)
DenitrificationProcess........................................................... ............................................................... ...10
(a)
Electrodialysis.......................................................................................................................................j..�
(I)
Foam Separation ..................................... ............................................. .................... ...............................V

(n)
Land Application of Ireated Elltuanl (see definition No. 22b) (not applicable for sand.
gravel, stone and other similar mining operations) by high rate Infiltration......................................................4
{;f
Microscreens..................... ......................................................................................... ................................
5
O)
Phosphorous Removal by Biological Processes (See definition No. 26).........................................................20
(k)
Polishing Ponds - without aeration............................................................................................................2
withaeration ..........................•...--.•---.----........................--•--.........................................6
(I)
Post Aeration - cascade................................•.............................-..................... .............. ....................
...0
diffused or mechanjcat..........................................................................................
2 ...........
(m)
Reverse Osmosis.........................................................................................................................................5
(n)
Sand or Mixed•Modia Filters " low rate..........................................................................................................2
high rate ................... ....5
(0) -
Treatment processes for removal of rrretat or cyanide ........................... ..................................... ...................
I 5 -N
(p)
treatment processes for removal of toxic materials other than metal of cyanide..............................................15
(7)
SLUDGETREATMFNT
(a)
Sludge Digestion Tank - Healed (anaerobic)...............................................................................................10
Aerobic...........................................................................I..................5
Unhealed(anaerobic).............................................................................................. ..... 3 ......... ....................
(b)
Sludge Stabilization (chemical or thermal)...................................................................................................5
(c )
Sludge Drying Beds - Gravity.....................................................................................................................2
Vacuum Assisted......................................................................................................................................5
(d)
Sludge Elutrialion.....................................................................................6.... .... ...,-5
(a)
Sludge Conditioner (chemical or thermal)......................................................................................................5
(f)
Sludge Thickener (gravity)..........................................................................................................................5
(g)
Dissolved Air Flotation Unit [not applicable to a unit rated as(3)(1)j..........................................6..................8
(h)
Sludge Gas Utilization (including gas storage) .............................. :..............................................................
2
(i)
Sludge Holding Tank - Aerated....................................................................................................................5
Norserated.............................................................................................................................................2
{J}
Sludge Incinerator (not Including activated carbon regeneration)................................................................10
(k)
Vacuum Filter, Centrifuge, or Filler Press or other similar dewatering devices ...................................................
10
(a)
RESIDUALS UTILIZATION/DISPOSAL (including incinerated ash)
(a)
Lagoons...................................................................................................................................................2
(b)
Land Application (surface and subsurface) (see definition 22a)
by contracting to a land application operalor or landfill operator who holds the land
application permit or landfill permit..............................................................................................................2
(c)
Dedicated Landfill(burial) by the perm'llee of the wastewater treatment facility...............................................5
(9)
DISINFECTEN
..............................................
(a) Chlorination.............................................................................................. �
(b)
Dechlodnation..........................................................................................................................................�.5`
WOzone
....................................................................................................................................................
f
(d)
Radiation....................................................................;.............................................................................5
(10)
CHEMICAL
ADDITION SYSTEM(S) ( see definition No. 9) [not applicable to chemical additions rated as Item
(3)(j),
(5)(a)(xj), (6)(a), (6)(b), (7)(b), (7)(e), (9a). (9)(b) or (9)(c) 5 points each:
List.........................................................................................................................
...................................................................................................................................5
................................................. . .. I ..................... I ..................... ,..................................5
................................................ ...................................................5
(1 1)
MISCELLANEOUS UNITSIPROCESSES
(a)
Hulding 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...... ...................................................................................
A
(b)
Effluent Flow Equalization (not applicable to storage basins which are inherent in land application
systems)........................................................................................
......2
(c)
Stage Discharge (not applicable 10 storage basins inherent in land application systems).................................6
(d)
Pumps....................................................................................................................................................
(6)
Stand -By Power Supply........................•...................................................................................................
(f)
Thermal Potlution Control Device...........................................................................................................
..
TOTAL POINTS ............................... :..................... .....................
cs�i7
CLASSIFICATION
Class I ..... ...................................................................................................... 5-25 Points
Class11 .........................................................................................................26-50 Points
CtassIll. ............ .... ............................... ............................. 1.1...................... 51-65 Points
ClassIV......:................................................................................................. 66-Up Points
-------------------------------------------------------------
acilhies having a rating of one through four points, inclusive, do not require a certified operator.
acililies having an activated sludge process will be assigned a minimum classification of Class 11.
icifities having treatment processes for the removal of metal or cyanide will be assigned a minimum classification of Class It.
tciiities having Ireatmonl processes (or the biological removal of phosphorus will be assigned a minimum classification of Class III
164 DEFINITIONS
s IWlowing definitions shall apply throughout dYs Subchapter.
, Activated Carbon Bads. A physicalichemica€ method fen reducing soluble organic material Nom wastewater olquent; The columrtype beds used in this method will have
flow rate varying [ram two to eight gallons per minute per square toot and may be either upAow or downAew carbon beds- Carbon may or may not be regenerated on the
�slawaler treatment plant site;
i Aerated Lagoons. A basin in which all solids are maintained in suspension and by which biological oxidation or organic matter is reduced through anillcially accelerated
nsfer of oxygen on a Ilow•Ilvdugh basis;
Aar A process of bringing about intimate contact between air or high purity oxygen In a liquid by spraying, agilalion or d'ettusion;(3a) Extended Aeration. An
river Igo process vlilizing a minimum hydraulic delention time of to hours,
Ag ally managed silo. Any site on which a crop. is produced, managed, and harvested (C(op includes grasses, grains, trees, etc.);
Ai ping. A process by which the ammonium ion is first convened to dissolved ammonia (pH adjustment) with the ammorva Limn released to the atmosphere by
yst, ant; or other similar processes which remove patrotaum products such as benzene, 1Wueno, and xylene;
Ca,-.,i Regeneration- The regeneration of exhausted carbon by the use al a lurnace to provide axlramely high lomperaluras which volatilize and oxidize the absorbed
purifies:
Carbonaceous Stage- A stage of wastewater Vealmont designed to achieve -secondary" elevenf bmils:
Contrituge. A mechanical device in which cen:rilvgal force is used to separate so8ds Irom licr ids or to sepafale liquids of dillerent densities;
Chemical Addition Systems- The addtlion of chernical(s) to wastawalof at an application point la purposes of improving solids removal, pH adjustment, alkalinity con. lrol,
.; the capability to experiment with dillorent chemicals and dllerenl application pants to achiava a specific rewlt will be considered one system; the capability to add

chemicals) to dual uNIs will be rated as one system; capability to add it chemical at a cillerenl application points for diBereol purposes will resat in the systems being
rated as separate systems;
(to) Chemcal Sludge Conditioning. The addition of a chemcal compoun_ d such as lima, ferric chloride, w a polymer 10 wet sludge to coalesce the mass prior to its
application to a dewatering device;
(it) Closed Cycle Systems. Use or halting ponds or holding larks for containment of wastewater containing Inorganic, non-foxlc materials hom sand, graveT, crushed
stone or other similar oparations. Such systems shall carry a maximum of two points regardless of pumping facilitas or any othoi appurtenances;
(12) Combined Ramova! of CarhonaCeeurs SOD and Nitrogenous Removal by Nildlicalion- A single stage system required to achieve permit erffuenl limits on BOD and
ammonia nitrogen witrin the same biological roactor;
03) Dechforination. The partial or cornplete reduclion of residual chlorin in a liquid by any chemical or physical process;
(14) Denivihcabon Process. The conversion of nitrate -nitrogen, to nitrogen gas;
(15) Efeclrodatysis. Process for rrxnoving Ionized salts kom wafer through the use of ion -selective ion -exchange membranes;
(t6) Filter Press. A process oferated mechanically for partially dawalering sludge;
(0) Foam Separation, The pl�niad frothing of wazlowaler or waslewaler'u Muerat as a means of removing excessive amounts of detergent materials through the
Introdiction of air in the form of fine bubbles; also called loam fractionation;
(te) Grit Removal. The process of removing grit and ether heavy mineral matter from wastewaler;
(19) Imhoff Tank. A deep two story wastewater lank consisting of an upper sedimentation chamber and it lower sludge digestion chamber.
(20) Instrumenled now Measurement. A device wfich indicates and records Yale of Mow:
(21) ton Exchange. A chemice! process In which ions from two different molecules are exchanged;
(22) Land application:
(a) Sludge Disposal. A final sludge disposal method by which wet sludge may ber applied to land either by spraying on The surface or by subsurface "action (i.e.,
cNsol plow); (not applicable for types of sludge described In (11) of this Rufa);
(b) Treated Effluent The process of spraying treated, wastewater onto a land area cr other methods of appilcalion ar wastewater onto a land area as a means of final
disposal or treatment; -
(23) Microscreen. A low speed, continuously back -washed, rotating drum filler operating under gravity conditions as a polishing rnemod for removing suspended solids
from elMuent;
(24) Nitrification Process. The biochemical conversion of unoxidzed rvirogen (ammonia and organc nitrogen) to oxidized nitrogen (usually nitrate);
(25) fJilrogenous Stage. A saparale stage of wastewater treatment designed for the specific purpose of converting ammonia nitrogen 10 nitrate nitrogen;
(25) Phosphate Removal, Eioogical. The rart•.oval of phosphorus from wastewater by an oxiclaroxic process designed to enhance luxury uptake of phosphorus by the
microorganisms:
(27) Polishing Pond. A holding pond following secondary treatment with sufficient dolsi lime 10 allow settling or finely suspended solids;
(2e) Post Aeration. Aeration following corrventional secondary troatmart units to increase striven; D.O. or for any other purpose;
(29) Post Aeration. (Cascade) A polishing method by which dissolved oxygen is added to Lye elnueni by a norzriecharical, gravity means of flowing down a series or
steps or weirs; 'The flaw occurring across the steps or waits moves in a fairly thin layer and the operation of the cascade requires no operator adustmenC thus, zero
points are assigned even though this is an essential step to mecong tho limits of the discharge garmil;
(30) Powdered to Granular Activated Carbon Feed. A biophysical carbon process that utilizes biological activity and organic absorption by using powdered or granular
activated carbon; Virgin or regenerated carbon is food controlled into the system;
(31) Prtiaerat!on. A tank constructed to provide aeration prior to primary treatment;
(32) Prelinhirtary L'nits. Unit operations in the treatment process, such as screening and comminulion, that prepare the liquor for subsequent major operations;
(33) fndustrial Pretreatment,
ra) Pre-irea'cnant Uril, Industrial}. The conditioning of a waste at its source before discharge, to remove or to neutralize substances Injurious to sewers and treatment
prmasses or to ehecl a partial reduction in load on the traabnanl process which is operated by the same governing body as the wastewater treatment plant being
rated;
b) Pre-trealmenl Program, Industrial - must he a State or EPA required program to receive points on the rating sheaf;
(34, Primary Clarifiers. The first settling larks through which wastewater is passed in a treatment works for the purpose of removing settleable and suspended solids and
800 which is associated with the solids;
(35) Pumps. All influent, etlluenl and in -plant pumps;
(36) Radiation. Disinfection or sterilization process utilizing devices emitting ultraviolet or gamma rays:
(37) Reverse Osmosis, A treatment process in which a heavy contaminated liquid is pressurized tivovgh a membrane forming noady pure liquid free from suspended solids;
(36) Rotating Biological Contractors. A fixed biological grovrth process in which wastewater rows through tanks in which z series of partially submerged circular surfaces
are totaled;
(39) Sand Filters:
(a) Intermittent Biological. Filtrallm of effluent following septic larks, lagoons, or some other treatment process in which fL+Vor biodecon-position is expected to
produce desired etilvenis: Hydraulic loading rates on theta filters are computed In gpd/ac and have a resulting low gpnvsl (iris Than one);
b) Recircua6ng biological - the same type of sand filler as defined in Subparagraph (39) (a) of this Rule with the added capaWity to recycle effluent back through the
sand tiller;
le0) Sar,d o' klixod-Medic Filtors. A polishing process by which effluent limits are achieved through a farther reduction of suspended solids;
Fa) low rate -- gravity, hydraulically loaded filter 'With loading rates In the one to three gpmisf range;
(b) Ngh rase -- a presr; re, hydraulically loaded filler with loading rates in the live gpmysf range; At any rate, the loading rate will exceed three gprn/sl:
(41) Secondary Clari5ars. A. lank which follows the biological unit of trea"gnt pfar:t and wfich has the purpose of removing sludges associated with the biologicai
Ieatment units;
(42) Sepwalq Sludge Reaeration. A part of the contact stabilization process where the activaled sludge is transferred to a tank and aerated before returning it to the
contact basin;
(43) Septic Tank. A single -story selling lank in which settled sludge Is in contact with The wastewater flowing through the tank; shall not be applicable for septic lank
systems serving singfe lamily iasidences having capacity of 2,000 gallons or less which discharge to a N164cation field;
(4-;) Sludge Digestion. The process by which organie or volatile Maher and sludge is gasified, liquefied, mineralized or converted into more stable organic matter though
the acd'viry of living organisms, which includes aerated hoiding tanks;
(45) Sludge Drying Reds, An area comprising nalural or artificial Layers of porous materials upon which digested sewage nudge is dried by drainage and evaporation;
(46) :4udoa Elutrialion. A process of sludge conditioning in which certain constituents are removed by successive washings with fresh wafer or plant ehluont;
(47) Sfudgo Gas UeGzation. The process of using savage gas for the purpose or heating buildings, driving engines, etc.;
(4e) Sludge Holding Tank (Aerated and Nonaeraled). A tank utilized for small wastewater trealmenl plants not conlair:ng a dgester in wNch sludge may be kept fresh,
and supamatant withdrawn prior to a drying method (La- sludge drying beds); This may be done by adding a small amount of air simply to keep the sludge fresh, but not
rrecsssarify as amount tihal woad be required to acheve stabilization of organic matter. A nonaeratad tank wotdd simply be used to decant sludge prior to dewalering and
would rot allow long portals (several days of detention) without resulting odor problems;
(49) Sudya incinerators. A furnace designed to bum sludge and to remove all moisture and combustible materials and reduce the sludge to a sterile ash;
(50) Sfudgo Stabilization (Chemical or Thermal). A process to make treated sludge less odorous and putrescii and to roduco the pathogenic organism content; This may
be none by pH adjustmhenl, chlorine dosing, or by heat treatment;
(51) Sludge Tlic',,enor. A typo of sedinhentation tank in which the sludge is permitted to settle and thicken through agilaoon and gravity;
(52) Sla'Aizalion Lagoon. A type of oxidation lagoon in which biological oxidation of organic matter is eifecled by nrlu-al transfer of oxygen to the water kom air (not a
Polishing pond);
(53) Surd -By Flower Supply. On sire or portable electrical generating equipment; '
(54) Static Screens. A slationary screen designed to remove solids, including non-biodegradabfa paniculals (floalable solids, suspended solids and BOO reduction) from
municipal and industrial wastewater treatrnan£ systems;
(55) Tertiary Treatmonl. A slago of treatment loflowing secondary wNch is primarily for the purpose of elfluent polishing: A satding lagoon or sand or coal Alta, might be
employed. for this purpose;
(56) Tharmal P011ulion control Device. A device providing for the transfer of heat from a fluid flowing in tubes 10 anollwr fu.id outside the tubes, or vice versa: or other
means of regulating liquid temperatures;
(57) Tharnal Sludge Corbtionw. A conditioning process by which heal is added for a protracted period of time to improve the dewalerabifiTy of &Judge by the solubilizirg
and hydiautizine of the smaller and more highly hydrated sludge panicles:
(58) Toxic Materials. Those wastes or combinations or wastes, iccluding disease -causing agents which after discharge and upon exposure, Ingeslion, inTalalion or
assirrilation into any organism, either directly from the environment or indirectly by Ingestion through lood chains, will cause death, disease, behavioral abnormalities,
cancer, genetic mutations, physiorogical malfunctions (inducting rraltunckons in reproduction) or physical deformations, in ouch orgarisms Or their offspring; Toxic materials
include, by way of iiiusiration and not lirnitation: lead, cadmium, crrpmium, Marc", vanadium, arsenic, zinc. orino-ritro-cMorobanzene (ONCB}, polychlorinated Liphenyfs
(PCBs) and dchlorodphonyl trichloroelhane (DDT): and any otner materials that have or may hweattar be de(errrinad to have toxic properties;
(59) trickling Filter. A bloiogical treatment unit consiadr,g of a malarial such as broken stone or rock over which waslewarw Is dstributod: A high rate trickling filler is one
witch operated at between 10 and 30 mgd per acre. A law rain vickling filter is one which is designed to operale at one to lour frigid per acre-
(F0) Trickling Filler (Packed Tcrr,Of). A plug flow type of operation in which wastewater llows down thvough successive layers of media or liltraig material; Organic malarial
is to moved cvnkiihjally by the ae4vs oiological &xod grovrtlh in each successive layer, This method may produce'sacondary' quality effiueni or may be adapted to
produce a nitrified eliluont:
(61) Vacuum Filter, Centrituges. or Filler Presses. Devices which are designed to remove excess water from either digested or undigested sludge prior to dspasal of
suitChar lreaVmar•.l.