WQ0007169_Final Permit_19931208

State of North Carolina
Department of Environment,
Health and Natural Resources
Division of Environmental Management
James B. Hunt, Jr., Governor
Jonathan B. Howes, Secretary
A. Preston Howard, Jr., P.E., Director
December 8, 1993
Mr. Michael L. Triplett, President
Caldwell Ready Mix, Incorporated
Post Office Box 461
Granite Falls, North Carolina 28630
Dear Mr. Triplett:
IDEHNF=1
Subject: Permit No. WQ0007169
Caldwell Ready Mix, Inc.
Washout Recovery System
Wastewater Recycle System
Caldwell County
In accordance with your application received October 26, 1992, we are forwarding herewith Pemn t
No. WQ0007169, dated December 8, 1993, to Caldwell Ready Mix, Incorporated for the subject
wastewater recycle system.
This permit shall be effective from the date of issuance until November 30, 1998, 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 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 919/ 733-5083.
Sincerely,
&4' 00 1q,
A. Preso Howard, Jr., P.E.
cc: Caldwell County Health Department
Asheville Regional Office, Water Quality Section
Haynes Engineering Associates
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
Caldwell Ready Mix, Incorporated
Caldwell County
FOR THE
construction and operation of a 4,000 GPD wastewater recycle system consisting of a truck wash out pad,
a hopper for separating aggregates, mechanical screw screening conveyors, stockpile slabs, primary
separation slab, three (3) clarification basins ( approximately 9,090 gallons, 8,525 gallons and 22,740
gallons), and all necessary pumps, valves and appurtenances to serve Caldwell Ready Mix, Incorporated's
truck washing and concrete operation with no discharge of wastes to the surface waters, pursuant to the
application received October 26, 1992 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 November 30, 1998, 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, 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. 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. Mail the Certification to the Permits and Engineering Unit, P.O. Box
29535, Raleigh, NC 27626-0535.

6. 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 as
may be required by this Division, such as the construction of additional or replacement
wastewater treatment or disposal facilities.
7. The Asheville 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.
8. The sludge generated from these treatment facilities must be disposed of in accordance with
General Statute 143-215.1 and in a manner approved by the North Carolina Division of
Environmental Management
9. 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.
10. 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.
11. Diversion or bypassing of untreated wastewater from the treatment facilities is prohibited
12. 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.
13. Adequate inspection:, maintenance, and cleaning shall be provided by the Permittee to
insure proper operation of the subject facilities.
14. 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 keep an inspection log or summary including at least the date and time of
inspection, observations made, and any maintenance, repairs, or corrective actions taken
by the Permittee. This log of inspections shall be maintained by the Permittee for a period
of three years from the date of the inspection and shall be made available upon request to
the Division of Environmental Management or other permitting authority.
15. 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
kept under the terms and conditions of this permit; or may obtain samples of groundwater,
surface water, or leachate.
16. 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 15 NCAC 2H .0205
(c)(4).
17. Failure to abide by the conditions and limitatiops 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 143-215.6A to 143-215.6C.
19. The issuance of this permit does not preclude the Permittec 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.
2

18. A set of approved plans and specifications for the subject project must be retained by the
Permittee for the life of this project.
19. Noncompliance Notification:
The Permittee shall report by telephone to the Asheville 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 render the facility
incapable of adequate wastewater treatment such as mechanical or electrical failures
of pumps, aerators, compressors, etc.
c. Any failure of a pumping station, sewer line, or treatment facility resulting in a by-
pass directly to receiving waters without treatment of all or any portion of the
influent to such station or facility.
d. Any time that self-monitoring information indicates that the facility 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. 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. 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.
K

21. 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 8th day of December, 1993
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
t!
A. Preston oward, Jr., .E., Director
Division o nvironmental Management
By Authority of the Environmental Management Commission
Permit No. WQ0007169
4

Permit No. WQ0007169
December 8; 1993
Engineer's Certification
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
Location Project Name
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 the approved plans and specifications.
Signature
Date
5
Registration No.

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RATING SCALE FOR, CLASSIFICATION
OF WATER POLLUTION CONTROL SYSTEMS
Name of Facility:�4ck��
�lG(! LC .��•.
Owner or Contact Person:
septic tanks
Mailing Address: P_Q Y (it
pump tanks
.Unty: _ C_4&DL1djE11_1
Telephone: -.2/,3
esent Classification: _
New Facility `� Existing Facility
NPDES Per. No. NCOD Nondisc. Per. No.W Ca;/Ce Health Dept.Per No.
Rated by:
Telephone:Date:�.�
Reviewed by:
Health Dept. Telephone:
disinfection
Regional Office Telephone:
chemical addition for nutrient/algae control
Central Office Telephone:
ORC:
Grade: Telephone:
Check Class ification(s): Subsurface
Spray Irrigation Land Application
Wastewater Classification: (Circle One) 0
II 1[[ IV Total Points:
-------------------------------------------------------------
IN-PLANT PROCESSES AND RELATED CONTROL EQUIPMENT WHICH ARE AN INTEGRAL PART OF INDUSTFtX PRODUCTION SHALL
nT BE CONSIDERED WASTE TREATMENT FOR THE PURPOSE OFCLASSIF1CATIoN ALSO SEF'TICTANK SYSTEMS CONSWING
ONLY OF �5EPTIC TANK AND fB��YITY NITRIFi TICYJIINR�,
-------------------------------------------------------------
ARE-EXEWPI FROM, CLASS ICATION,
SUBSURFACE CLASSIFICATION
(check all units that apply)
1. septic tanks
2. pump tanks
3. siphon or pump -dosing systems
4._ sand fitters
5. grease trap/interceptor
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,
septic tanks
4.
pump tanks
5.
pumps
6.
sand filters
7.
grease lraprnlerceplor
S.
oil/wafer'separators
g,
disinfection
i0.
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 APPLICATION/RESIDUALS CLASSIFICATION (Applies only to permit holder)
I. Land application of biosoiids, residuals or contaminated soifs on a designated site.
------------._._..— .
WASTEWATER TREATMENT FACILITYCLASSIFICATION
The following systems shall be assigned a Class'[ classification, unless the flow is of a significant quantity or the technology is
unusually complex, to require consideration by the Commission on a case-by-case basis: (Check if Appropriate)
1. Oil/waler Separator Systems consisting only of physical separation, pumps and disposal;
2. Septic Tank/Sand Filter Systems consisting oniy of septic tanks, dosing apparatus, pumps,sand fillers, disinfection
and direct discharge;
3. Lagoon Systems consisting only of preliminary treatment, lagoons, pumps, disinfection, necessary chemical
✓ treatment for algae or nutrient control, and direct discharge;
4. Closed-loop Recycle Systems;
5. Groundwaler Remediation Systems consisting only of pumps, air -stripping, carbon adsorption, disinfection and
disposal;
6. Aquaculture operations with discharge to surface wafers;
Water Plant sludge handling and back -wash water ireatmr:r';
Seafood processing consisting of screening and disposal.
Single-family discharging systems, wilh !-he exception of Aerobic Treatment Units, will be classified if permitted
after July 1, 1993 or if upon inspection by lha Division, it is found [hat the sysle"m isnot being adequalely operated
or maintained_ Such systems will be notified of the classification or reclassification by the Commission, in writing.

paints)
ITEM POINT&
(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 waters, sludge handling
facilities for
water purification plants, totally closed cycle systems(see definition No. 11), and facilities
consisting
only of Item (4)(d) or Items (4)(d) and (11)(d))
0 - 20.000. ............ ................................................................................................. ............. .... .......... I
20,001 - 50.000...............................:......................................................................................................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) rale 1 point additional for each 200,000 gpd capacity up to a
maximumof ................... .................................... ................. 30
Design Flow (gpd)
(3) PRELIM€NARY UNITSIPROCESSES (see definition No.32)
(a)
Bar Scresns................................ ........... .................. ......................................................_.........................1
or
(b)
Mechanical Screens, Static Screens or Comminuting Devices..........................................................................2
(cJ
Grit Removal..............................................................................................................................................1
or
(d)
Mechanical orAaratedGrit Removal.............................................................:...............................................2
{e)
Flow Measuring Device................................................................................................................................1
or
(f)
Instrumented Flow Measurement................................................................................................................2
(g)
Preaeration...............................................................................................................................................2
(h)
Influent Flow Equalization..........................................................................................................................2
(I)
Grease or Oil Separators - Gravity.................................................................................................................2
Mechanical.................................................................................................................................................3
Dissolved Air Flotation........................................-.............................................................._..._....................a
(()Prechlorination
...........................................................................................................................................5
(4) PRIMARY TREATMENT
UNIT&PK>CESSES
(a)
Septic Tank (see definition No. 43).............................................................................................................2
(b)
Imholf Tank.............................................................................................................................................. 5
(c)
Primary Clarifiers..........................................................................................................................................5
(d)
Settling Ponds or Settling Tanks for tnorganic Non-toxic Materials (sludge handling facilities for
water purification plants, sand, gravel, stone, and other mining operations except recreational
activities such as gem or gold mining).........................................................................................................2
(5) SECONDARYTREATMEN7UNiTWROCESSES
(a)
Carbonaceous Stage
(f) Aeration -High Purity Oxygen System........................................................:......................20
Diffused Air System.......................................................................................................10
Mechanical Air System (fixed, floating or rotor) ..................................................................8
Separate Sludge Reaeration.............................................................................................3
Trickling Filter
HighRate.......................................................................................................................7
StandardRate........................................................................".......................................5
PackedTower................................................................................................................5
Biological Aerated Filter or Aerated
Biological Fitter ................................................ .........1 0
....................................................
(iv) Aerated Lagoons..........................................................................................................10
(v) Rotating Biological Contactors.......................................................................................10
(VI) Sand Filters -intermittent biological ................................................ -.................................2
Recirculatingbiological...................................................".................................................3
(vii) Stabilization Lagoons.........:...........,................:.............................-........:.......................5
(vni) Clarifier .....................
..........................................;................. ................ .......................... 5
(Ix). Single stage system for combined carbonaceous removal of BOD 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),
ulilizing 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 Cullure (-Super Bugs-)addition........................................................................5
(b)
Nitrogenous Stage
(I) Aeration - High Purity Oxygen System.............................................................................20
DilfusedAir System.......................................................................................................1 0
Mechanical Air System (fixed, floating or rotor)..................................................................8
separateSludge Reaeration.............................................................................................3
(Ii) Trickling Filter -High Rale.................:.................................................................................7
StandardRate.........................................".....,................................................................5
PackedTower.................................................................................................................5
Biological Aerated Filter or Aerated Biological Fifter ............................... ........................1 o
(iv) Rolaling Blologlcal Conlactors......................................................................................10
(v) Sand Filter - intermittent biological...................................................................................2
Recirculatingbiological................................................................:....................................3
(vi) Clarifier...........................................................................................................................5
(.8} TERTIARY OR ADVANCED TREATMerrUNITS_rPROCESSES
(a)
Activated Carbon Beds -
withoutcarbon regenoratlon....................................................................................................5
with carbon cogeneration., ..................................................................................................... 15
(b)
Powdered or Granular Activated Carbon Feed -
Without carbon regeneration..................:...............................................................................5
with carbon regeneration.....................................................................................................1 5
I(c)
Air stripping ....................... :... ............................................................................... :....... 5
(d)
............................
Denitrification Process ..............................
(a)
Electrodialysis.........................................................."-..................................................".............................5
(1)
Foam Separation.................................:......................................................................................................5

CLASSIFICATION
classI...........................................................................................................5-25 Paints
Class11.........................................................................................................26-50 Points
class ill .....................
........................
........................... ................................. 51-65 Points
ClassIV ....... ...................... ......................................................................... 66 -Up Points
—
Facilities having a rating of ono through lour points, inclusive, do not require a certified operator. w—
FaciGlies 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 III.
_--------._._......._..----------- -----
.0031 DEFINITIONS
The sol€awing definitions shall apply throughout this Subchapter,
(1) Activated Carbon Beds. A physicaltchemical method for reducing soluble organic material from wastewater alAuent; The column -type bods used in this method w41 have
a low rate varying from Iwo to eight gallons per minute per square foot and may be either upAow or downflow carbon beds. Carbon may or may not be regenerated on Lha
wastewater treatment plant site; %
(2) Aerated Lagoons, A basin in which all solids are maintained in suspension and by which biological oxidation or organic matter is reduced through artificially accelerated
uansler of oxygen on a flow-through basis;
(3) Aeration, A process at bxinging about intimate contact between air or high purify oxygen in a liquid by spraying, agitation of diffusion: 3a) Extended Aeration. Art
activated sludge process utilizing a mfnimurn hydraulic detention time of 18 hours.
(4) A� liuralfy managed site. Any site on which A crop Is produced, managed, and harvested (Crop includes grasses, grains, trees, e1c.);
ISI Aa aing. A process by which the immonium ion is first convened to dissolved ammonia (pH adjustmenl) with the arnmortia then released to She atmosphere by
physi, ans- or other sinciar processes which remove petroleum products such as benzene, tduene, and xylene;
I(61 Cr iagenerafion. The regeneration of exhausted carbon by the use of a Iurnace to provide extremely high temperatures which volatilize and oxidize the absorbed
p
(71 C. =ceous Stage, A stage of wastewater treatment desfgr)od to achieve 'secondary- effluent limits;
PCentrik?ga. A mechanical device in which centrifugal force is used In separate solids Irom ligt ds or to sopa<ate liquds at dilfereni densities;
Chemical Addition Systems- The addition of chemical(s) to waslowafar at an application point for purposes of improving solids removal, pit adjusbnanl, alkalinity control,
61c.; the Capability 10 experiment with daloreni chonvcals and dillerent application points to achieve a specific result +.rill be considered one syslam; Sha capability to add
gravel, stone and other similar mining operations) -by high rate lnfiltration......................................................4
{i)
Mic.pscreens:............................................................................................................................................5
O)
Phosphorous Removal by Biological Processes (See definition No. 26).........................................................20
(k)
Polishing Ponds - without aerasion............................................................................................................2
withaerallon...............................................................................................:.................5
(1)
Post Aeration - cascade., ............................................................................................................................0
diflusedor mechanical................................................................................:.......................2
(m)
Reverse Osmosis..........................................:............................................................................................5
(n)
Sand or Mixed -Media Filters - low rale..........................................................................................................2
highrale......................................................................5
(o)
.Treatment processes for removal of metal or cyanide...................................................................................15
(p)
(reatment processes for removal of toxic materials other than metal of cyanide..............................................15
(7)
SLUDGETREATMENT
(a)
Sludge Digestion Tank - Heated (anaerobic)...............................................................................................10
Aerobic.........................................................................................................................................5
Unhealed(anaerobic)
(b)
...............................................................................................................................3
Sludge Stabllizalfon (chemical or thermal) ...........................
(c)
Sludge Drying Beds - Gravity ............................................
VacuumAssisted..................................................................................................................__.::..........._.
(d)
Sludge Elutriation......................................................................................................................................5
(6)
Sludge Conditioner (chemical orthermal)...................................................:.................................................5
{f)
Sludge Thickener (gravity)........................................................... ................................_.............................5
(g)
Dissolved Air Flotation Unit [not applicable to a unit rated as(3)(1)).............................................................8
(h)
Sludge Gas Utilization (including gas storage)..............................:..............................................................2
(i)
Sludge Holding Tank - Aerated....................................................................................................................5
Non-ae ral ed....................................................._................................................_......................................2
O)
Sludge Incinerator (not Including activated carbon regeneration)................................................................10
(k)
Vacuum Filler, Centrifuge, of Filler Press or other similar dewatering devices...................................................10
(f3)
RESIDUALS
UTILIZATIOWDISPOSAL (including incinerated ash)
(a)
Lagoons..................................................................................................................................................2
(b)
Land Application (surface and subsurface) (sea delinilion 22a)
by contracting to a land application operator or landfill operator who holds the land
applicationpermit or landfill permit..............................................................................................................2
(c)
Dedicated Landfill(burial) by the permit€se of the wastewater treatment facility...............................................5
(9)
DISINFECTi�"t. f
(a)
Chlorination... ................................................... 5
(b)
Dechlorination ........... ................ .................................................................. ..............................................5
(c)
Ozone......................................................................................................................................................5
(d)
Radiation....................................................................:.............................................................................5
(10)
CHEMICAL
ADDITION SYSTEMS) ( see definition No. 9) [not applicable to chemical additions raled as Item
(3)(j),
(5)(a)(xi), (6)(a), (6)(b), (7)(b), (7)(e), (9a), (9)(b) or (9)(c) 5 points each:'
List,
...................................................................................................................................... 5
....................................................................................................................5
............ ........................ ........ .................................... ........................................................ 5
(1 1 }
_... .... ......................................................................................... ..........................._...........5
MISCELi.ANECUS UNr(SIPAOCESSES
(a)
Holding Ponds, Holding Tanks or Settling Ponds for Organic or Toxic Materials including wastes
from mfnfng 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
(6)
Stand -By Power Supply ....................
(I)
Thermal Pollution Control Device................................................................................................................3
TOTAL POINTS.................:.............:..........................................
CLASSIFICATION
classI...........................................................................................................5-25 Paints
Class11.........................................................................................................26-50 Points
class ill .....................
........................
........................... ................................. 51-65 Points
ClassIV ....... ...................... ......................................................................... 66 -Up Points
—
Facilities having a rating of ono through lour points, inclusive, do not require a certified operator. w—
FaciGlies 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 III.
_--------._._......._..----------- -----
.0031 DEFINITIONS
The sol€awing definitions shall apply throughout this Subchapter,
(1) Activated Carbon Beds. A physicaltchemical method for reducing soluble organic material from wastewater alAuent; The column -type bods used in this method w41 have
a low rate varying from Iwo to eight gallons per minute per square foot and may be either upAow or downflow carbon beds. Carbon may or may not be regenerated on Lha
wastewater treatment plant site; %
(2) Aerated Lagoons, A basin in which all solids are maintained in suspension and by which biological oxidation or organic matter is reduced through artificially accelerated
uansler of oxygen on a flow-through basis;
(3) Aeration, A process at bxinging about intimate contact between air or high purify oxygen in a liquid by spraying, agitation of diffusion: 3a) Extended Aeration. Art
activated sludge process utilizing a mfnimurn hydraulic detention time of 18 hours.
(4) A� liuralfy managed site. Any site on which A crop Is produced, managed, and harvested (Crop includes grasses, grains, trees, e1c.);
ISI Aa aing. A process by which the immonium ion is first convened to dissolved ammonia (pH adjustmenl) with the arnmortia then released to She atmosphere by
physi, ans- or other sinciar processes which remove petroleum products such as benzene, tduene, and xylene;
I(61 Cr iagenerafion. The regeneration of exhausted carbon by the use of a Iurnace to provide extremely high temperatures which volatilize and oxidize the absorbed
p
(71 C. =ceous Stage, A stage of wastewater treatment desfgr)od to achieve 'secondary- effluent limits;
PCentrik?ga. A mechanical device in which centrifugal force is used In separate solids Irom ligt ds or to sopa<ate liquds at dilfereni densities;
Chemical Addition Systems- The addition of chemical(s) to waslowafar at an application point for purposes of improving solids removal, pit adjusbnanl, alkalinity control,
61c.; the Capability 10 experiment with daloreni chonvcals and dillerent application points to achieve a specific result +.rill be considered one syslam; Sha capability to add

a -w-ca at a Wiwonl appicalion points lot different purposes wilt result In the systems baing
-I'
„e:
(ho; C;ti r -:cal sludge Conditioring. The addition of a chemical compou;W such as lima, ferric chloride, or a polymer to wet skxsge to coalesco the mass prior to iEs
application to a dewatering devfre;
(I t) Closed Cycle Systems- Use of holding ponds or holding larks for containment of wastewater contairing Imrgarhic, non-toxic mtalerlals hom sand, gravel, crushed
stone or other similar operations. Such systems shall carry a maximum of two points regardless of pumping facilities or any other appurtenances;
(.=) Combined Ramoval of Carbonaceous BOD and Nitrogenous Removal by Nitrification- A single stage system required to achieve permit effluent lirrks on BOO and
ammonFa rilnigen Wlcin the some bioioglcai raaclor;
(13) Dechlorination. The partial or complele reduction of residual chlorine In a liquid by any cfhemicat of physical process;
(14) Deritrilicalion Process. The conversion of nitrate -nitrogen to nitrogen gas;
(15) Eloclrodiatysls. Process for removing ionized salts from water lihrough the use of Ion-setactive ion -exchange membranes; •`
(16) Filter Press. A process c+errlod mechanically for partially dewatering s!udge; --
(17) Foam Separation. The plpnriad frothing of wastewater or wastewaterMutantas a means of removing excessive amounts of delergerrt materials through the
introduction of air in the form of fine bubbles; also caned foam fractonaticn;
(18) Grit Removal. The process of removing grit and other heavy mineral matter tram wastewater;
(19) Imhoff Tank. A deep two story wastewater lank coraisting at an upper sedimentation chamber and a lower sludge digestion chamber.
(20) Inslrumented Flow Moasuroment. A device which Indicates and records rate of now;
(21) Ion Exchange. A chemical process In which Ions from two ddterent mol"as are exchanged;
(22) Land application:
(a) Sludge Disposal.. A final sludge disposal method by which wet sludge m, v be applied to land either by spraying on the surface or by subsurface in'actien (i.e.,
chisel plow); [not applicable for types of sludge described in (11) of this Rule);
(b) Treated EVIuenl The process of spraying treated wastewater onto a land area cr aVhor methods of application of wastewater onto a land area as a means of final
disposal or treatment;
(23) Microscreon. A low speed, contirxxusly back -washed, totaling ckum lifter operating under gravity conditions as a polishing method for removing suspended solids
front efnuent;
(24) Nitrification Process. The biochemical conversion of unoxidized nilrogon (ammonia and organic rilrogen) to oxidized ritrogen (usually nitrate);
(25) Nitrogenous Stage. A separate stage of wastewater treatment designed for the specify papose of convertng ammonia nitrogen to nitrate nitrogen;
(26) Phosphate Removal, Siclogica. The removal of phosphorus From wastewater by an oxiclanoxic process designed to enhance luxury uptake of phosphorus by the
microorganisms;
(27) Polishing Pond- A i',olding pond Following secondary Ireatrnent wich sufficient dotonbon lima to allow settling of finely suspanded solids;
(28) Post Aeration. Aeration lofiowing conventlenat secondary troalment units to increase effluent D-0, or for any othor purpose;
(29) Post Aeration. (Cascade) A polishing method by which dissolved oxygen Is added to the einuent by a normecharical, gravity means of Flawing dam a series of
steps or weirs; -The flaw occurring across the steps or weirs moves in a lairly thin layer and the operation of the cascade requires no operator acjustnant; thus, zero
points are assigned even though tNs is an essential step to rmeating the limits of thrr discharge ponrit;
(30) Powdered to Granular Activated Carbon Feud. A biophysical carbon process that utilizes biologcal activity error organic absorption by using powdered or granular
ac5valed carbon; Virgin or regenerated carbon is feed controlled into the sysSaiit;
(31) Proaeralion. A tank constructed to provide aeration prior to primary treatment;
(32) Preliminary Juts. Unit operations in the treatment process, such as screening and commirution, that prepare tlw liquor for subsequent major operations;
(33) industrial Pretreatment.
(a) Pre-iraatment Uril, industrial. The condlioneng of a waste at Its source before discharge, to remove Or 10 newafize substances In;urious to Sawars and treaanenl
processes or to enact a partial reduction in load on the treaaneni process which is opuraled by the same governing body as the waslewaiar treatment plant being
ra to d;
b) Pre-trealmont Program, Industrial - must be a Slate or EPA roquired program to receive points on the rating sheet;
(34) Primary Clarifiers- Tho frsl settliN tanks though which wastewater is passed in a treatment works for the p3rpose of removing settleable and suspended solids and
BOD which Is associated with the solids;
(35) Pumps. All influent, efliuent and implant pumps;
(36) Radiation. Disinlection or sterilization process utilizing devices arritting ultraviolet or gamma rays;
(37) Reverse Osmosis. A treatment. process in which a heavy contaminaled liquid is pressurized ttyough a membrana forming nearly pure liquid hoe from suspended solids;
(32) Rotating Biological Contractors. A fixed biological growth process in which wastewater flows through tanks in which : series of partially submerged aocular ssxfacss
aro rotated;
(39) Sand Filters:
(a) Intermittent Biological. Filtration at eftivenl following septic tanks, lagoons, or some other treatment prOcess in which N-lfwr Nodecornposilion is expected fo
produce dasi!od etlluents; Hydraulic loading rales on those fillers are computed in gpdrac and have a restlfing tour gprNs( {lass than ono);
b) P.ecireslating biological - the same type of sand liner as defined in Subparagraph (39) (a) of this Rule with the added capability td recycle alluent back through the
sand li'•lor;
(40) Sand or Mixed-Modia Filters. A polishing process by which e01,18nt limits are achieved through a fu-ther reduction of suspended solids;
(a) low rate -- gratily, hydraulically loaded lifter with loading rales In the one to three gprrvsf range;
(b) high rate -- a pressure, hydraulically loaded filter with loading rales in the live gprnwsf range; At any rate, the loading rate will exceed throe gpm✓sl;
!) Secondary CrariSars_ A. tank which follows the biological unit of treatment plant and which has the purpose of tamovirg sludges assoctafed vrith the biological
aimenl unils-
) Separate Sludae Reaara8on, A part Of the contact stabilization process where the activalod sludge is transferred to a Sank and aerated before returning it to the
_-tilact basin;
(43) Septic Tank. A single -story settling tank in which settled sludge is in contact with Cha wastewater Ifowing through the tank; shall not be applicable for septic lank
systems serving single family residences having capacity Of 2,000 gallons or lass which discharge 10 a nitrification held;
(4-4) Sludge Digestion. The process by which organic or volatile matter and sludge is gasified. IiqueEed, mineralized or conversed into more stable organic matter through
the activity or living orgarisms, wWch includes aaraled holding tanks;
(45) Sludge Drying Beds. An area comprising r.aluraf or arti4rial layers of porous materials upon which digested sewage s!udge is dnaG by drainage and evaporation;
(46) Sludge Elutriation- A process of sludge conditioning in which certain constituents are removed by successive washings with fresh water or plant ellluont;
(47) Sludge Gas Utilization. The process of usimg towage gas lot the purpose of heating buildings, driving engines, etc.:
(48) Sludge Holding Tank (Aerated and Nonaerated). A tart vtlizsd for shall wastawaler lrealmenl plants not confairing a dgester in which sludge may be kept fresh,
and supernatant withdrawn prior to a drying method (i.e. sludge drying beds); This may be done by adding a small amount of air simply to keep the sludge fresh, but not
necessarily an amount that would be required to achave stabilization or organic matter. A nonaerated tank would simply be used to decant sludge prior to dewalering and
wWTd not alloy long periods (several days of detention) without resUling Odor problems;
(49) Sludge Incnerators. A fixnace desig:hed to bum %fudge and to remove all moisture and comtwsiihfe materials and reduce the sludge to a sterile ash:
(50) Sludge Stabilization (Chemical or Thhorrnal). A process to maks treated sludge lass odorous and putresclble, and to reduce the pathogenic organism content; This may
be done by pH aujustment. chlorine dosing, or by heat Ceatment:
(51) Sfudga Tlickemer. A q�po of sedinhentation tants in which the sludge Is perminad to settle and thicken through agitatim and gravity;
(52) SlaNlizalion Lagoon. A type of oxidation lagoon in which bidogical oxidation or agaric matter is affected by nrtural transler of oxygen to that water from air (nota
polishing pond);
(53) Stand -By Powor Supply. On silo or poriabla electrical generating equipment;
(54) Sla9C Screens. A slatimary scraern designed to remove solids, including non -biodegradable partialale (Aoatabte solids, suspended solids and BOD feductlon) from
municipal and industrial wastewater treatmanl systems;
(55) Tertiary Troatmoni. A stage of troa!ment lotlowing secondary which is primarily for the purpose at effluent polishing; A serving lagoon or sand or coal filter might be
ampluyed ior this purpose;
(56) 7hurmal Pof rtion Central Device. A device providing for the transfer of heat from a fluid flowing in tubes to another find outside the tubes, or vice versa; or ether
moans of rogdating liquid temperatures;
(57) Ther -nal Silydgo Ccrddi or. A condifioning process by which heat is added for a protracted period of time to improve trig dewalprobifity of sludge by the solubilizing
add hydratkzinc of the smaller and more ltighiy hydrated sludge panicles;
(58) Toxic Materials. Those wastes or combinations of wastes, including disease -causing agents which aha; discharge and upon exposure, Ingestion, inhalation M
assimilation into any orgarism, either directy From the environment or indrocty by ingestion r1rough load chains, wai cause death, disease, behavioral abnormalities,
cancer, genetic mutations, physiological malfunctions (including maNw--tons in reproduction) or physical deformations, in such orgarisms or their otlspring: Toxic materials
include, by way of illustration and not lirnliation: load, cadmium, chromium, mercury, vanadwm, arserie, zinc, ortho-rilro-cHombenzone (ONCE), polychlorinated biphenyls
(PCBs) and dichforodphenyl trichloroathane (DDT): and any otho: makariais that have or may hereaflot be delwrrine'd to have toxic properties;
(59) Trickling Fillar. A biological hoalmonl unit coni;or,g of a materiat such as broken stone or rock over which wastewator is ddatibwted; A ihigh rale Trickling filter is arra
wfich op Prated a% between SO and 30 mgd per acre. A 'ow rate trickling filter is one which is designad to morale at one to four mgd par acre:
(60) Trickifng I'Mor (Packed Tov:or). A plug now typo of operation in which wastewater flows down lirough successive layers of media or Filtrate maloriaf; Organic material
is remavod continu Aify by the activ6 biological 6xod grovreh in each successive layer. Itis moOoo may prnduce 'secondary- quailry efnuent, or may he adapled to
produce a nit: liOd ehlluonr;
(61) Vacuum Filler, Contriiuges, or Filter Presses. Devices which are designed to rarmovo excess water from either digested or undigested sludge prior 1e disposal or
lurt— treatment_