WQ0001962_Final Permit_19940805

;)Iaite of North Carolina
Department of Environment,
Health and Natural Resources
Division of Environmental Management
James B. Hunt, Jr., Governor
Jonathan B. Howes, Secretary
A. Preston Howard, Jr., P.E., Director
August 5, 1994
Mr. Thomas E. Elmore, III, Vice President
Barrus Construction Company
Division of APAC-Carolina, Incorporated
Post Office Box 399
Kinston, North Carolina 28502
soft
�EHNF�
Subject: Permit No. WQ0001962
Barrus Construction Company
Goldsboro Asphaltic Batch Plant
Wastewater Recycle System
Wayne County
T>ar Mr. Elmore:
In accordance with your application received February 21, 1994, we are forwarding herewith
Permit No. WQ0001962, dated August 5, 1994, to Barrus Construction Company for the continued
operation of the subject wastewater recycle system.
This permit shall void Permit No. WQ0001962 issued January 31, 1992, and shall be effective
from the date of issuance until July 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.
If you need additional information concerning this matter, please contact Ms. Angela Y. Griffin at
[phone].
cc: Johnston County Health Department
Raleigh Regional Office, Water Quality
Training and Certification Unit
Facilities Assessment Unit
P.O. Box 29535, Raleigh, North Carolina 27626-0535
An Equal Opportunity Affirmative Action Employer
Sincerely,
A. Prest Howard, Jr., P.E.
Telephone [phone] FAX [phone]
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
Barrus Construction Company
Johnston County
FOR THE
continued operation of a 144,000 GPD wastewater recycle system consisting of one (1) basin (45 feet by
130 feet) for settling out trapped dust particles from a Venturi Scrubber and all necessary pump, valve and
appurtenances for recycling the basin water back to the system to serve Barrus Construction Company's
Princeton Asphaltic Batch Plant with no discharge of wastes to the surface waters, pursuant to the
application received February 21, 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 void Permit No. WQ0001962 issued January 31, 1992 and shall be effective
from the date of issuance until May 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.
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 treatrnent or disposal facilities.

6. The residuals generated from these treatment facilities must be disposed in accordance with
General Statute 143-215.1 and in a manner approved by the North Carolina Division of
Environmental Management.
7. The issuance of this permit shall not relieve the Perm.ittee of the responsibility for damages
to surface or groundwaters resulting from the operation of this facility.
8. 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.
9. Diversion or bypassing of untreated wastewater from the treatment facilities is prohibited.
10. Freeboard in the settling basins shall not be less than two feet at any time.
11. 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.
12. Adequate inspection, maintenance, and cleaning shall be provided by the Permittee to
insure proper operation of the subject facilities.
13. The Permittee or his designee shall inspect the wastewater recycle 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.
14. 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 recycle system 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.
15. The annual administering and compliance fee must be paid by the Permittee within thirty
(30) days after being billed by the Division. Failure to pay the fee accordingly may cause
the Division to initiate action to revoke this permit as specified by 15A NCAC 2H .0205
(c)(4).
16. Failure to abide by the conditions and limitations contained in this permit may subject the
Permince 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).
17. 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.
18. A set of approved plans and specifications for the subject project must be retained by the
Permittee for the life of this project.
2

19. Noncompliance Notification:
The Permittee shall report by telephone to the Raleigh 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.
20. Sampling of the recycling basin water must occur within thirty (30) days after the plant is
put back into operation and thereafter every May a sample of the wastewater discharged to
the settling basin shall be obtained and analyzed for the following parameters:
Purgeable Halocarbons
Purgeable Aromatics
Aldehydes (formaldehyde, isobutyraldehyde, n-butyraldehyde, and isovaleraldehyde)
Analytical methods used should be the appropriate EPA method having the lowest detection
limits.
21. The results of the sampling and analysis shall be sent to the Groundwater Section, Permits
and Compliance Unit, P. O. Box 29535, Raleigh, NC 237626-0535 on Form GW-59
[Compliance Monitoring Report Form].
22. Any additional groundwater quality monitoring, as deemed necessary by the Division, shall
be provided.
23. 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 BQLJNDARY 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.
3

24. 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 11, 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.
25. 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 dep-m appropriate.
Permit issued this the 5th day of August, 1994
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
A. Preston Poward, Jr., AE., Director / L
Division o nvironrnental Management
By Authority of the Environmental Management Commission
Permit No. WQ0001962
4

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BATING SCALE FOR CLASSIFICATION OF WATER POLLUTION CONTROL SYSTEMS il
Name of Facility: / �U�" Ct/J STY LL�f'd�- l• / /f /CL-t(_/f k__ 41''k'XZL�
Owner or Contact rson: 77-1
Mailing Address: _P0 - A/C SZ)?-
County: _ z_ /-n Telephone: 2_w' �
sent Classification: _ New Facility Existing Facility 2�
.jDES Per. No. NC00 Nondisc. Per. No.WQQ0619(a51-Health Dept.Per No.
Rated by: /iq• Ci/'�' � Telephone, T -S Date:IV
Reviewed by: Health Dept. Telephone:
Regional Office Telephone:
Central Office Telephone:
ORC: Grade: Telephone:
Check Class ification(s), Subsurface Spray Irrigation Land Application
Wastewater Classification: (Circle One) 1 II 111 1V Total Points:
IN -PLANT PROCESS>=S AND RELATED CONTROL EQUIPMENT WHICH ARE AN INTEGRAL PART OF INDUSTRIAL PRODUCTION SPALL
NOT BE CONSIDERED WASTE TREATMENT FOR THE PURPOSE OFCLASSIFiCAT1ON ALSO SEPTIC TANK SYSTEMS CONSISTIN
C&L Y OF SEPTIC TANK AND GRAVITY NITRIFICATION LINES ARE EXEMPT FROt.. CLASSIFICATION,
SUBSURFACE CLA-SSIFICATION
(check all units that apply)
1. septic tanks
2, pump tanks
3. siphon or pump -dosing systems
A, sand fillers
5. grease traptnlerceplor
6. oil/water separators
gravity 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 traptinterceplor
a-
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 shali be rated using the point rating system and will require an operator with an
appropriate dual certification.
LAND APPLICATION/RESIDUALS CLASSIFICATION (Applies only to permit holder)
1. Land application of biosolids, residuals or contaminated soils on a designated site.
-----------------------------------------
WASTEWATER TREATMENT FACILITYCLASSIFICATION
The following systems shall be assigned a Class I cfassffication, unless the flow is of a signlficanl quantity or the technology is
unusually complex, to require consideration by the Commission on a case -by -case basis: (Check if Appropriale)
1. Oil/water Separator Syslems consisting only of physical separation, pumps and disposal;
2. Septic Tank/Sand Filler Systems consisting only of septic tanks, dosing apparatus, pumps,sand filters, disinfection
and direct discharge;
3. Lagoon Systems consisting only of preliminary treatment, lagoons, pumps, disinfection, necessary chemical
%/ treatment for algae or nutrient control, and direct discharge;
4. Xa Closed-#oop Recycle Systems;
5. Groundwater Remedialion Systems consisting only of pumps, air -stripping, carbon adsorption, disinfection and
disposal;
6. Aquacullure operations with discharge 10 surface waters;
7. Water Plant sludge liandling and back -wash water treatmer';
9. Seafood processing consisting of screening and disposal.
_Single lamiiy discharging Syslems, with the exception of Aerobic Treatment Units, will be classified if permitted
after 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 notified of the classification or reclassification by the Commission, in writing.

The foliowing scale is urea !nr iaut,y
points)
rrEM 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 -contaminated cooling wafers, sludge handling
lacilities
for water purification plants, totally closed cycle systems(ses delirdtion No. 1i), and facilities
consisting only of Item (4)(d) or Items (4)(d) and (11)(d)j
0 - 20.000........................................................................................................................................1
20,001 - 50,OOD....................................................................................................... ,..............................2
50.001 100.000.....................................................................................................................................3
100,001 - 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 10 a
maximum of........................................................................30
Design Flow (gpd)
(3) PRELIMINARY
UN17SJPROCESSES (see definition No.32)
(a)
Bar Screens..................................................................................................,...........................................1
or
(b)
Mechanical Screens, Static Screens or Comminuting Devices ...................... ............. ........ ............. ................ z
(c)
GritRemoval..............................................................................................................................................1
or
(d)
Mechanical or Aerated Grit Removal.............................................................................................................2
(e)
Flow Measuring Device ..........................................................................................................................1
or
(1)
instrumented Flow Measurement .................................. ...... »...................................................................... 2
(g)
Preaeraiion............................................................................................................................................... 2
(h)
Influent Flow Equalization..........................................................................................................................2
(1)
Grease or Oil Separator; - Gravity.................................................................................................................2
Mechanical .................................................................................................................................................3
Dissolved Alr Flotation................................................................................................................................8
(1)
Prachlorination....................... .......... .................................................................................. 5
(4) PRIMARY TREATMENT LNiTSrPROCESSES
(a)
Septic Tank (see definition No. 43).............................................................................................................2
(b)
Imhoil Tank........................................................................._....................................................................5
(c)
Primary Clarifiers ... ...................... ......................................... ...................................................... I.................
(d)
Settling Ponds or Settling Tanks for Inorganic Non -toxic Materials (sludge handling facilities for
water purilication plants, sand, gravel, stone, and other mining operations except recreational
activities such as gem or gold mining)........................................................................................................2
(5) SECONDARY TREATMENT UNrr&PROCESSES
(a)
Carbonaceous Stage
(i) Aeration -High Purity Oxygen System...............................................................................20
DiffusedAir Syslem.......................................................................................................10
Mechanlcal Air System (fixed, floating or rotor) ......... ................................................... ...... a
Separate Sludge Reaeralicn.............................................................................................3
(ii) Trickling Filter
HighRate........................................................................................................................7
Standard Rate................................................................................................................5
PackedTower.................................................................................................................5
(iii) Biological Aerated Filter or Aerated
Biological Fher.............................................................................................................1 0
(iv) Aerated Lagoons ...................................... :................................................................... 10
(v) Rotating Biological Contactors ......................... ....................... ................ ....................... 10
(vi) Sand Fillers -intermittent biological..................................................................................2
Recirculatingbiological.....................................................................................................3
(vif) Stabilization Lagoons...................__........................................................._......................5
(viii) Clarifier...........................................................................................................................5
(ix) Single stage system for combined carbonaceous ramoval of SOD and nitrogenous
removal by nitrification (see definition No. 12)(Polnis for this item have to be in
addition to hams (5)(a)(i) through
utilizing the extended aeration process (see definition No.3a)...........................................2
utilizing other Phan the extended aeration process............................................................5
(x) Nutrient additions 10 enhance BOD removal......................................................................6
(col) Biological Culture ('Super Bugs')addition........................................................................5
(b)
Nitrogenous Stage
(i) Aeration - High Purity Oxygen System............................................................................20
Diffused Air System.......................................................................................................1 0
Mechanical Air System (fined, floating or rotor)..................................................................a
Separate Sludge Reaeration............................................................................................. 3
(ii) Trickling Filler -High Rate...................................................................................................7
Standard Rate................................................................................................................5
Packed Tower.......................................................................................
(iii) Biological Aerated Filter or Aerated Biological Filter.............................................................1 0
(iv) Rotating Biological Contactors .................................................. ....................... ............ 10
(v) Sand Filter - inierminenl biological...................................................................................2
Recirculating biological.....................................................................................................3
(vl) Ct Rier.............................................................................................. 5
(6) TERTtARYORADVANCED TREATMENT UNIT&'PFIOCESSES
1 a)
Activated Carbon Bads -
withoutcarbon regeneration....................................................................................................5
With carbon regeneration................................................................................ ...15
....................
(b)
Powdered ar Granular Activated Carbon Feed -
without carbon regeneration..................................................................................................5
with carbon regeneration.....................................................................................................1 5
(c)
Air stripping...................................................... ................ .................. ..................:................................ ...5
(d)
Denitr:licaiion Process.....................................................................................................I............I...........10
(a)
Eleclrodialysis................__............................................................................................5
(1)
Foam Separation..............................................................................._._....................._..6

tn)
t-aw nppneanon ct rreateu rinueni tsee oerrnnion No. zzo) (rat appucame for aarru,
gravel, stone and other similar mining operations) by high race Infiltration......................................................4
(t}
Microscreens........................................................_........_.................5
{J }
Phosphorous Removal by Biological Processes (Sae definitlon No. 26).........................................................20
3
(k)
Polishing Ponds - without aeration...........................................................................................................2
withaeration..................................................................................................................5
(I}
Post Aeration - cascade ......................... ......... .......................................................................................... 0
diffusedor mechanical........................................................................................................2
(m)
Reverse Osmosis ..............
(n)
Sand or Mixed -Media Filters - low rate..........................................................................................................2
highrate.....................................................................5
(o }
Treatment processes for removal of malal or cyanide...................................................................................1 5
(p)
treatment processes for removal of toxic materials other than metal of cyanide..............................................15
(7)
SLUDGETAEATMENT
(a)
Slvdge Digestion Tank - Heated (anaerobic)...............................................................................................10
Aerobic..............................................................................................................................................5
Unhealed(anaerobic)........................... ...................................................................................................3
(b)
Sludge Stabilization (chemical or thermal)...............................................................................................I..5
(c)
Sludge Drying Beds -Gravity......................................................................................................................2
VacuumAssisted......................................................................................................................:.:..............5
(d)
Sludge Eluldation..................................... ..............................................................................................5
.
(a)
Sludge Conditioner (chemical or thermal).....................................................................................................6
(f)
Sludge Thickener (gravity) ............................ ...4
(g)
Dissolved Air Flotation Unit [not applicable to a unit rated as(3)(I)].............................................................8
(h)
Sludge Gas Utilization (including gas storage).............................................................................................2
(1)
Sludge Holding Tank - Aerated....................................................................................................................5
Norraerat_ed ....... ................................................. ....................................................................2
([)
Sludge Incinerator (not including activated carbon regeneration)................................................................10
(k)
Vacuum Filter, Centrifuge, or Filter Press or other similar dewalering devices...................................................1 0
(e)
RESIDUALS UTILIZATION/DISPOSAL (including incinerated ash)
(a)
Lagoons. ....._. .._... I .... . ...................... ..................................................
(b)
Land Application (surface and subsurface) (see definition 22a)
by contracting to a land application operator or landlill operator who holds the land
applicationpermit or landfill permit..............................................................................................................2
(c)
Dedicated Land[ ill(burial) by the permittee of the wastewater treatmentfacility. ........................................... 5
(9)
D044FECTIC—N
(a)
Chlorination.............................................................................................................................................5
(b}
Dechlorination...........................................................................................................................................5
(c)
Ozons......................................................................................................................................................5
(d)
Radiation. ... ...... .... ......._ .....5 ..................... ........................... ........... ....................... ................................
t t u/
CHEMICAL ADDITION SYSTEM(S) ( see definition No. 9) [not applicable to chemical additions rated as flem
(3)(1). (5)(a)(xf), (6)(a), (6){b), (7)(b), (7)(s), (9a), (9)(b) or (9)(c) 5 points each.'
List.....................................................................................................................................5
...................................................................................................................................5
................. ......................... ....... .............................................................. I ............ ...... I....5
............................................................................................................ .. ..........5
(1 1)
MISCEU.ANECIiS UNITSrPPIOCESSES
(a)
Hulding Ponds, Holding Tanks or Sensing 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
I
(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.............................................................................................................................3
(1)
Thermal Pollution Control Device.................................................................................................................3
TOTAL POINTS ............ ...................... ...... -............. ...-..................
CLASSIFICATION
Classi...........................................................................................................5.25 Points
Classil.........................................................................................................26.50 Pofnls
classIII .............. ............................................................................... I .......... 51-65 Points
ClassIV ....................................................... ................ ................................ 66-Up Points
--------------------------_.--------.,---...---------------. __-_.-----
Facilities having a rating of one through four points, inclusive, do not require a certilied operator.
Facilities having an activated sludge process will be assigned a minimum classification of Class 11.
Facilities having treatment processes for the removal of metal or cyanide will be assigned a minimum classification of Class 11.
Facilities having treatment processes for the biological removal of phosphorus will be assigned a minimum classification of Class 11).
.0004 DEFINITIONS
The following delinillom shall apply throughoul this Subchapter.
(1) Activated Carbon Beds. A physicalrchemical methad for reducing sotoWa organic material from wastewater offluenti The column -type beds used In this rnencid will have
a now We varying from two to eight gallons per minute per square loot and may be either upAow or downllow carbon beds. Carbon may Or may not be regenerated on the
wastewater treatment plant site;
(2) Aerated Lagoons, A basin In which all solids are maintained in suspension and by which biological oxidation or organic mallet is reduced through artificially accelerated
transfer of oxygen on a Ilow•through basis;
(3) Aeration. A process of bringing about intimate contact between air or Ngh purity oxygen in a liquid by spraying, agitation or ditsion;(3a) Extended Aeration. An
activated stodge process Wizing a minimum hydraulic dalantion time of 18 hours.
(4) Agriculturally managed site. Any site on which a crop is praduced, managed, and harvested (Crop includes grasses, grains, yeas, etc.);
(5) Air ' Ong. A process by which the ammonium ion is first convened to dissolved ammonia (pH adjustment) with the ammonia then released to the atmosphera by
physic or other sirrlar processes which remove petroleum products such as benzene, toluene, and xylene;
(6) Ca •neration. The regeneration of exhausted carbon by the use of a furnace to provide extremely high temperatures which volatilize and oxidize the absorbed
impuril,
(7) Garb. .ous Stage. A ;tags al wastewater treatment designed to achieve 'secondary- elituent limits;
(e) Centrifuge. A mechanical device in which cenl41v9a1 force is used to separate solids from liq.ids or to separate rigvi6s of different densities;
(9) Chemical Addition Systems. The addition or chenticat(s) to wastewater at an application poinl for purposes of improving solids removal, pH ad;vstmenl, alkafinity control,
etc.; the capability to experiment with diilorenl chunicals and dillwant application points to achieve a specific result will be considered one system; tha capability to add

chersicat(s) to dual units will be rated as one system; capability to add a chemical at a diriwenl application points for different purposes will result in the systems being
rated as separate syslOnts;
(so) Chemical Sludge Condiforing, The addition of a dllamical compound such as lime, ferric chloride, or a polymer to wol sludge to coalesce the mass prior to its
application to a dewalering device;
(it) dosed Cycle Systems. Use of holding ponds or hddlrrg larks for containment of wastewater containing Inorganic, nontoxic materials born sand, gravel, crushed
ril or other similar operations. Such systems shall carry a maximum or two points regardless of pumping facilities or any other appurtenances;
(12) Combined Removal of Carbonaceous SOD and Nitrogenous Removal by Nitrification A single stage system required to achiovo parmil ri lluent limits on 800 and
ammonia nitrogen within the same biological reactor;
(13) Oechlorination. The partial or complete reduction of residual chlorine In a liquld by any chemical or physical process;
(14) Deritrifcalion Process_ The conversion of nivate-nitrogen to nitrogen gas:
(15) Eleclrodil ls. Process for removing Ionized sails from wit thro,4h the use of lon-seiecf.ive lon-exchange membranes;
(16) Filler Press. A process o;eralBd mechanically for panialty dewatering sludge;
(17) Foam Separation. The p;.nlad frothing of wastewater or wastowalar siAuend as a means of removing excessive amounts of detergant materials through the
Introbjction of air in the form of Mine bubbles; also called loam fractionation;
(18) Grit Removal. The process of removing girl and ether heavy mineral matter from wastewater:
(19) Irtnotl Tank. A deep two story wastewatar lank consisting of an upper sedimentation chamber and a lewer Wudge digestion chamber.
(20) Instrumented Flow Measuamant- A device which indicalas and records rate of flow;
(21) Ion Exchange. A dwrricat process In which Ions from two different molecules are exchanged;
(22) Land application:
(a) Sludge Disposal. A final sludge disposal method by which wel sludge may be applied to land either by spraying on the "ace or by subsurface Iryacton (i.e„
chisel plow); (nol applicable for types of sludge described in (11) of this Al
(b) Treated Effkxerrt The process of spraying treated wastewater onlo a land area or other methods of appiicat m of wastewater onto a tend area as ■ moans of final
disposal or tvatmem;
(23) Microscveon. A low speed, continuously back washed, rotating drum filler operating under gravity conditions as a pdisFing method for removing suspended solids
from alluent;
(24) Nitrification Process. The biochemical conversion of unoxidtzed rilrogen (ammonia and organic nilogen) to oxidized nitrogen (usually nilrete);
(25) Nitroganous Stage. A saparala stage of wastewater treatment designed for the specilic purpose or converting ammonia nitrogen to nitrate nitrogen;
(26) Phosphate Removal, B'ofogca!- The ramaval of phosphorus from wastewater by an oxiclanoxic process designed 10 enhance Iuxuy uptake of phosphorus by the
microorganisms;
(27) Polishing Pond. A lwldma pond lollowiog secondary trealrae l with sulhcienl dotenton time 10 allow setting of finely suspended solids;
(28) Posl Aeration. Aeration fallowing conventional secondary treatment units to increase aN,luent D.O, err for any c')w purpose;
(29) Post Aaration, (Cascade) A polishing me" by which dissofved oxygen Is added to ilia effluent by a nonerleehanical, gravity means of flowing down a series of
steps or weirs; 'The flow occurring across the steps or weirs moves in a lafrly tin layer and the operation or the cascade requiras ro operator adlustrmant: thus, zero
points are assigned even though this is an essential slop to meeting Una limits of the discharge permit;
(30) Powdered to Granular Activated Carbon Feed. A blophysical carbon process llat utilizes biological activity and organic absorption by using powdered or granular
activated carbon; Virgin o,. regenerated carbon is feed controlled into the system;
(31) Praaeration. A tank constructed to provide aeration prior to primary treatment;
(32) Pfeiirnil-Wy Units. Unit operations in the treatment process, such as screening and comminution, that prepare the liquor for subsequent mayor operations;
(33) Industrial PreUaalment.
,a) Pre-area-nan; Ul Industial, The conditioning of a waste at Its source before discharge, to remove or to neutralize substances fnju-icus to sewers and treatment
processes or to etleel a partial feduclian In load on rile treairlenl process which Is operated by the same govwring body as the wastewater treatment plant being
rated;
b) Pre-traalmont Program, Industrial - must be a State or EPA required program to receive points on the rating sheet;
(34} Primary Clarifiers, The first settling tanks through which wastewalar is passed in a treatment works for the purpose of removing settleable 'and suspended solids and
BOD which is associated with the solids;
(35) Pumps. AE inituenl, effluent and implant pumps;
(35) Radiation. Disinfection or slarillzation process utilizing devices emitting ultraviolet or gamma rays;
(37) Reverse OsmosiL. A trealtil process in which a heavy contaminated liquid is pressurized through a membrane forming nearly pure liquid free from suspended saints;
(36) Rotating Biological Contractors. A lied biological grown process in which wastewater Mows through tanks in which a series of partially submerged circular surfaces
are rotated;
(39) Sand Filters:
(a) Intefmirert Biological. Filtration of oftiuenl iollownng septic tanks, lagoons, or some other treatment process in which fu-tCwr biodecorri lIoZ Is expected to
produce desired etlluents; Hydraulic loading rates on these Fitters are computed In gpolac and have a resUling low gpmisf (less than one);
b) P,acirculating biological - the same type of sand bluer as defined In Subparagraph (33) (a) of this Rule with the added capability to recycle effluent back rlrough the
sand filler;
(40) Sal or Affixed -Media Fiitors. A polishing process by which eflfuenl limits are achieved through a h.ather iaduc4on of suspended solids;
(a) love rate •• gravil, hydraulically loaded fitter with loafing rates In khe one to three gpr l range;
(b) high rate -• a prossura, hydraulically loaded litter with Ina&r,g rates in the five gprtVsf range; At any rate, the loading rate will exceed three gpWsl;
(45) Secnndary Clarifiers. A. tal which follows the biological unit of treatment plant and which has the purpose or removing sludges associated with the biological
treatment units;
(42) Separate S;udae Reparation. A part of the contact stabilization process where the activated sludge is transferred to a tank and aaraled before returning it to the
con!act basin;
(43, SaF1ic Tank. A single -story tattling tank in which settled sludge is in contact with Ow wastewater flowing through the tank; shall not ba applicable [or septic tank
systemc sawing single larrity rasidences having capacity of 2,000 gallons or toss which discharge to a nitrification field;
(4-i) Sludge Digestion. The process by wrich organic or volatile matter and sludge is gasified, iiquill mineralized or emvil led into more stable organic matte., through
tie acti•rity of living organisms, which includes aeraled holding tanks;
(45) Sludge Drying Beds. An area comprising nalwaf or anihciat layers of porous materials upon which digested sewage sludge is dried by drainage and evaporation;
(46) Vtrdga Etuaialion. A process of sludge conditioning in which certain constituents are removed by successive washings with fresh water or pianl ii ll;ran:;
(47) Sludge Gas U614ation. The process of using sewage gas for the purpose of heating buildings, driving engines, etc
(AS) Sludge Holding 'rank (Aerated and Nonaerated). A lank utilized for small waslawater treatment plants not containing a digester in which sludge may be kept fresh,
and supernatant wilhdrawn prior to a drying method (i,s, sludge drying bads); This may be done by adding a small amount 0 air simply to keep the sludge fresh, but not
necessarily an amour," that would be required to achiave staNlizalion of organic matter. A nonaerated lank would simply be used to decant sludge prior to dswalol and
would nal allow long periods (several days of delention) without resulling odor problems;
(49) "voge Incinerators. A furnace designed to burr. slAge and to remove all moisiure and combustil le materials and reduca the sludge to a sterile ash;
(50) Sludge StaSilization (Chemical or Thermal). A process to make treated sludge less odorous and putrescible, and to toducb the pathogenic organism content; This may
be done by pH a6u3tmeni, chlorine dosing, or by heal trealnn9nl;
(51) Sludge Tliu.enor. A typo of sedimentation lank in which the sludge is permined to settle and thicken through agitation and gravity;
(52) SlaMlization Lagoon, A type of oxidation lagoon in which biological oxidation of organic rnaliar is eflected by nttual transfer of oxygen 10 the water from air (rot a
polishing pc^d): -
(53) Sland-By Power Supply. On site or portable eiactricat generating equipment;
(54) Static Screens- A stationary screen designed to remove solids, includng non -biodegradable panicUa"e (8oalable solids• suspended solids and SOD reduction) from
municipal and -industrial wastewater treatment systems;
(_5) Tertiary Treatrnomt. A stage of treatment fallowing secondary which is primarily for the purpose of effluent polishing; A sattiing lagoon or sand or coal War fright bra
empcuyed for this purpose;
(56) Thermal Poihrtior, Control Device. A device providing for the transfer of heal from a fluid flowing in tubes to another fluid outside the tubes, or vice versa; or other
means of regulating !iquid temperatures;
(57) Thernal Strdge Conditioner. A eondtioning process by which heat is added for a protracted period of tiny to improve toe dewalerability of sludge by the solubtizing
and hydrautizinr of the smaller and more highly hydrated sludge panicles;
(55) Toxic Materials. Those wastes or combinations of wastes, including disease -causing agents which after discharge and upon exposure. Ingestion, inhalation or
assim;lalion into any orgarysm, either directly from the omvironrrlent or indirectly by Ingestion through food chains, will cause death, disease, behavioral abnormalities,
cancel- genetic m Aalions, phys ologicaE malfunctions (inciudng malfunctions in reproduction) or physical delormatons, In such orgarisms or their offspring; Toxic materials
include, by way of ilivslration and rol limitation: read, cadmium, clvwnium, mercury, vanadium, arsenic, 2il ortto-nitro-chloiobsnzene (ONCE), poiychlorinated biphenyls
(PCBs) and dcr,lerodiphenyl tdcNoroothane (DDTp, and any other materials that have or may hereafter be determined to have toxic properties;
(59) Trickling Fdlw. A biological treatment tint consi;dr.g or a material such as broken stone or rock over which waslawater Is distribulad; A high rate trickling lifter is one
witch ope'at10 al bomoon 10 and 30 mgd per acre. A 'ow rare trickling lifter is one which is designed to 6por2lo at one to lour mgd per acre;
(E0) Tnckling Filler (P a^-ked Te-r.-cr . A plug how type of operation in which waslawater flows down tryough successive layers of nlacka or filtrate malarial; Organic malodat
is removed contirvany by 1.1w active biotogidal fixed growth in each successive layer. This madro:, may produce 'secondar!• quality alhuenl- or may be adapted to
produce a ribiliod olQuanl:
(51) Vacuum Filler, Canaifuges, or F411el Presses. Devices which are designed 10 remove excess water from either 696slij or undig6516d sludge prior to disposal or
lurlher uealmor.l.