WQ0008431_Final Permit_19931112

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
k T,%%T-X;wj
[DEHNR
November 12, 1993
Mr. Dale Crisp, Asst. Public Utilities Director
City of Raleigh
Department of Public Utilities
Post Office Box 590
Raleigh, North Carolina 27602
Subject: Permit No. WQ0008431
City of Raleigh
E.M. Johnson Water Treatment Plant
Alum Sludge Landfill
Wake County
Dear Mr. Crisp:
In accordance with your application received September 9, 1993, we are forwarding herewith
Permit No. WQ0008431 dated November 12, 1993, to the City of Raleigh, Department of Public Utilities
for the operation of a landfill of sludge program.
This permit shall be effective from the date of issuance until October 31, 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 to you, 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.
P,O. Box 29535, Raleigh, North Carolina 27626-0535 Telephone [phone] FAX [phone]
An Equal Opportunity Affirmative Action Employer 500% recycled/ 10% post -consumer paper

One set of approved plans and specifications is being forwarded to you. if you need additional
information concerning this matter, please contact Mr. John Seymour at 919/ 733-5083.
Sincerely,
A. Prest Howard, Jr., P.E.
Director
cc: Wake County Health Department
Piedmont Olsen Hensley
Raleigh Regional Office, Water Quality Section
Raleigh Regional Office, Groundwater Section
Jack Floyd, Groundwater Section Central Office
Training and Certification
Facilities Assessment Unit

NORTH CAROLINA
ENVIRONMENTAL MANAGEMENT COMMISSION
DEPARTMENT OF ENVIRONMENT, HEALTH AND NATURAL RESOURCES
RALEIGH
SLUDGE LANDFILL 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
City of Raleigh, Department of Public Utilities
Wake County
FOR THE
operation of an alum sludge landfill program consisting of the landfill of approximately 26 Million gallons
of alum sludge from the City of Raleigh E.M. Johnson water treatment facility, consisting of the
construction and operation of a lined on site landfill with landfill decant wastewater being pumped, by
floating pump and overland piping, back to the water treatment plant's existing alum sludge dewatering
facilities with no discharge of wastes to the surface waters, pursuant to the application received September
9, 1993, and in conformity with the project plan, specifications, and other supporting data subsequently
filed and approved by the Department of Environment, Health and Natural Resources and considered a
part of this permit.
This permit shall be effective from the date of issuance until October 31, 1998, and shall be subject
to the following specified conditions and limitations:
I. PERFORMANCE STANDARDS
1. The Raleigh Regional Office, telephone number 919/ 571-4700 and the appropriate local
governmental official (county manager/city manager) shall be notified at least twenty-four
(24) hours prior to the initial application of the sludge so that an inspection can be made of
the landfill and application method. 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. Also the Wake County Manager's office must be
notified prior to the initial application so that they will be aware that the operation has
commenced.
2. The land application program shall be effectively maintained and operated as a non -
discharge system to prevent the discharge of any wastes resulting from the operation of this
program.
3. 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.

4. In the event that the landfill program is not operated satisfactorily, including the creation of
nuisance conditions, the Permittee shall cease disposing of alum sludge into the landfill area
and take any immediate corrective actions, including the construction of additional or
replacement wastewater treatment or disposal facilities.
5. The following buffer zones shall be maintained:
a) 400 feet from residences or places of public assembly under separate ownership for
surface application method; however, the buffer zone requirement may be reduced
to a minimum of 100 feet upon written consent of the owner and the appropriate
DEM regional office,
b) 200 feet from residences or places of public assembly under separate ownership for
injection method; however, the buffer zone requirement may be reduced to a
minimum of 100 feet upon written consent of the owner and the appropriate DEM
regional office,
c) 100 feet from "SA and SB" classified waters and public surface water supplies for
both methods,
d) 50 feet from "WS" classified waters and other streams, creeks, lakes, rivers, and
surface water drainage ways for injection method,
e) 100 feet from "WS" classified waters and other streams, creeks, lakes, rivers and
surface water drainage ways for surface application method,
f) 50 feet from property lines for both methods; however, this requirement may be
reduced upon written concurrence from the adjoining property owner and the
appropriate DEM regional office,
g) 50 feet from public right of ways for surface application methods,
h) 25 feet from public right of ways for subsurface disposal methods,
i) 10 feet from upslope interceptor drains and surface water diversions for both
methods,
j) 25 feet from downslope interceptor drains, surface water diversions, groundwater
drainage systems and surface drainage ditches for both methods.
Some of the buffers specified above may not have been included in previous permits
for this land application operation. Any sites or fields that are included in this permit,
but were approved with different applicable buffers, will continue to be regulated by
those originally approved buffers. All new sites and fields will be regulated by the
buffers specified above.
6. A copy of this permit shall be kept at the landfill site when sludge is being applied during
the life of this permit. A spill prevention and control plan shall be kept in all sludge
transport vehicles.
I1. OPERATIQN AND MAINTENANCE REQUIREMENTS
1. The facilities and disposal sites shall be properly maintained and operated at all times.
4. No sludges other than the following are hereby approved for Iandfill application in
accordance with this permit:
Pen -nit Estimated
Source County Number Volume
E.M. Johnson Wake NCO082376 26 million gallons
Water Treatment Plant
2

Upon classification of the facility by the Certification Commission, the Permittee shall
employ a certified wastewater treatment plant operator to be in responsible charge (ORC) of
the wastewater treatment facilities. The operator must hold a certificate of the type and
grade at least equivalent to or greater than the classification assigned to the wastewater
treatment facilities by the Certification Commission. The Permittee must also employ a
certified back-up operator of the appropriate type and grade to comply with the conditions
of Title 15A, Chapter 8A, .0202. The ORC of the facility must visit each Class I facility at
least weekly and each Class II, III, and IV facility at least daily, excluding weekends and
holidays, and must properly manage and document daily operation and maintenance of the
facility and must comply with all other conditions of Title 15A, Chapter 8A, .0202.
6. Adequate procedures shall be provided to prevent surface runoff from carrying any
disposed or stored sludge material into any surface waters.
7. Appropriate measures must be taken to control public access to the landfill site during active
site use. Such controls may include the posting of signs indicating the activities being
conducted at each site.
8. Adequate provisions shall be taken to prevent wind erosion and surface runoff from
conveying pollutants from the sludge landfill area onto the adjacent property or into the
surface waters.
9. The pumping of supernatant/stormwater from the alum landfill to the water treatment plant
shall not cause or allow any discharges to the groundwater or any surface waters. No.
nuisance conditions shall be created by this pumping process.
10. Stormwaters shall be prevented from flowing onto the alum landfill area.
III. M NIT RI AND-REPORTINQ REQUIREMENTS
1. Any monitoring (including groundwater, surface water, sludge, soil, or plant tissue
analyses) deemed necessary by the Division of Environmental Management to insure
protection of the environment will be established and an acceptable sampling and reporting
schedule shall be followed. If monitoring data indicates minimal or no concern to the
Division, reduction of monitoring requirements may be pursued after two annual reporting
periods.
2. Proper records shall be maintained by the Permittee tracking all disposal activities. These
records shall include, but are not necessarily limited to the following information. -
a) source of sludge
b) date of sludge landfilling
c) volume of sludge landfUled
d) weather conditions
e) annual and cumulative totals of alurn sludge,
3

3. A quarterly sludge analysis and annual Toxicity Characteristics Leaching Procedure
(TCLP) analysis shall be conducted by the Permittee and the results maintained on file by
the Permittee for a minimum of five years. If landfill application occurs at a frequency less
than quarterly, sludge analysis will be required for each instance of land application.
The sludge analysis shall include but is not necessarily limited to the following parameters:
% total solids
Magnesium
Chlorides
Sulfate
Phosphorus
Potassium
Lead
Zinc
Copper
Nickel
Cadmium
Chromium
Sodium
Calcium
Total Nitrogen
Ammonia Nitrogen
Nitrate/Nitrite Nitrogen
pH
Plant Available Nitrogen (by calculation)
The TCLP analysis shall include the following parameters:
Arsenic
Barium
Benzene
Cadmium
Carbon tetrachloride
Chlordane
Chlorobenzene
Chloroform
Chromium
o-Cresol
m-Cresol
p-Cresol
Cresol
2,4-D
1,4-DichIorobenzene
1,2-Dichloroethane
1,1-Dichloroethylene
2,4-Dinitrotoluene
Endrin
Heptachlor (and its hydroxide)
Hexachlorobenzene
Hexachloro- 1,3-butadiene
Hexachloroethane
Lead
Lindane
Mercury
Methoxychlor
Methyl ethyl ketone
Nitrobenzene
Pentachlorophenol
Pyridine
Selenium
Silver
Tetrachloroethylene
Toxaphene
Trichloroethylene
2,4,5-Trichlorophenol
2,4,6-Trichlorophenoi
2,4,5-TP (Silvex)
Vinyl chloride
4. Three copies of all monitoring and reporting requirements as specified in conditions III 1,
1112, and III 3 shall be submitted annually on or before March 1 of the following year to
the following address:
NC Division of Environmental Management
Water Quality Section
Facility Assessment Unit
PO Box 29535
Raleigh, NC 27626-0535
E

5. Noncompliance Notification:
The Permittee shall report by telephone to the Raleigh Regional Office, telephone number
919/ 571-4700 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 with the land application program which results in the land
application of significant amounts of wastes which are abnormal in quantity or
characteristic.
b. Any failure of the land application program resulting in a release of sludge material
to receiving waters.
c. Any time that self -monitoring information indicates that the facility has gone out of
compliance with the conditions and limitations of this permit or the parameters on
which the system was designed.
d. Any process unit failure, due to known or unknown reasons, that render the facility
incapable of adequate sludge treatment.
e. Any spillage or discharge from a vehicle or piping system transporting sludge to the
application site.
Persons reporting such occurrences by telephone shall also file a written report in letter
form within 15 days following first knowledge of the occurrence. This report must outline
the actions taken or proposed to be taken to ensure that the problem does not recur.
IV. GROUNDWATER REQUIREMENTS
1. The lagoon shall have a liner of natural material at least one foot in thickness, compacted to
95% proctor standard dry density and installed and compacted in layers no thicker than six
inches, with a hydraulic conductivity of no greater than 1 x 10-5 cm/sec. Following
installation and inspection of the lagoon liner, and prior to waste disposal operations,
verification of the liner's compliance with hydraulic conductivity and thickness
specifications must be provided to the Division of Environmental Management,
Groundwater Section, by the project engineer.
2. Any groundwater quality monitoring as deemed necessary by the Division of
Environmental Management shall be provided.
The Compliance Boundary for the disposal system (see Attachment A) is specified by
regulations in 15 NCAC 2L, Groundwater Classifications and Standards.The Compliance
Boundary 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 beyond the Compliance Boundary is subject
to penalty provisions applicable under General Statute 143-215.6A(1)a.
Also in accordance with 15A NCAC 2L, Groundwater Classifications and Standards. A
REVIEW BOUNDARY is established around 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.
5

V . INSPECTIQNS
The Permittee or his designee shall inspect the sludge storage, transport, and disposal
facilities to prevent malfunctions and deterioration, operator errors and discharges which
may cause or lead to the release of wastes to the environment, a threat to human health, or a
nuisance. The Permittee shall 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 by the Division of Environmental Management or other permitting authority.
2. Any duly authorized officer, employee, or representative of the Division of Environmental
Management may, upon presentation of credentials, enter and inspect any property,
premises or place on or related to the disposal site and facility 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 Ieachate.
VI. GENERAL CONDITIONS
1, This permit shall become voidable unless the landfill application activities are carried out in
accordance with the conditions of this permit and in the manner approved by this Division.
2. This permit is effective only with respect to the nature and volume of wastes described in
the application and other supporting data.
3. This permit is not transferable. In the event there is a desire for the facilities to change
ownership or a name change of the Permittee, a formal permit request must be submitted to
the Division of Environmental Management accompanied by an application fee,
documentation from the parties involved, and other supporting materials as may be
appropriate. The approval of this request will be considered on its merits and may or may
not be approved.
4. Failure to abide by the conditions and limitations contained in this permit may subject the
Permittee to an enforcement action by the Division of Environmental Management in
accordance with North Carolina General Statute 143-215.6A to 143-215.6C.
5. The annual administering and compliance fee must be paid by the Permittee within thirty
(30) days after being billed by the Division. Failure to pay the fee accordingly may cause
the Division to initiate action to revoke this permit as specified by 15 NCAC 2H .0205
(c)(4).
6. 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.
7. A set of approved documents for the subject project must be retained by the applicant for
the life of the permit.
8. 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.
6

9. This permit may be modified, or revoked and reissued to incorporate any conditions,
limitations and monitoring requirements the Division of Environmental Management deems
necessary in order to adequately protect the environment and public health.
Permit issued this the 12th day of November, 1993
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
6a'L' &roiC"'LT /�'
A. Presto oward, Jr., P.E , Director 17
Division o nvironmental Management
By Authority of the Environmental Management Commission
Permit No. WQ0008431

Permit No. WQ0008431
November 12, 1993
I - IM IN 01 DIRM 01 M I I I�►
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,
Project Name
Location
for the
Permittee hereby state that, to the best of my abilities, due care and diligence was used in the observation
of the construction such that the construction was observed to be built within substantial compliance and
intent of this permit, the approved plans and specifications, and other supporting materials.
Signature
Date
Registration No.

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RATING SCALE FOR CLASSIFICATION OF WATER POLLUTION CONTROL SYSTEMS
Name 'of Facility: �` � 4-f- L;26 Wo -el
Owner or Contact Person: s
Mailing Address: PC el, o1F 11�c " , Ll P.0• Box f!m1, a14; /, At 27rbZ
County: _ Wak e _- ___ Telephone:
Present Classification: New Facility L/ _Existing Facility
NPDES Per. No. NC00 Nondisc. Per. No. 4/�a4Health -Dept. Per. NQ
Rated by: ,] S`t'�.Mcf r- Telephone: Date:�-
Reviewed by: Health Dept. Telephone:
Regional Office Telephone; .
Central Office Telephone:
ORC: Grade: Telephone:
Check Classifications}: subsurface Spray Irrigation LandApplication s/
Wastewater Classification: (Circle One) 1 11 III IV Total Points:
------------------------------------------------------------------------------------------------------------------------------------------------
I ling %wanks •- I ••M -• • r. � ; -_
\� �1. :71 fi : lu 1 a•.L 1■ Cw•� * • 1�\ ' 4 :►I► 7 0►. 71► .
SUBSURFACE ClASSIFICAMON
(check all units that apply)
1. septic tanks
2. pump tanks
3. siphon or pump -dosing systems
4. sand filters
5. grease tra0riterceptor
6. oil/water separators
7. subsurface treatment and disposal
Gravity
pressure
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 fillers
7. grease trapinlerceptor
8, oil/water separators
9. disinfection
10. chemical addition for
nutrient/algae control
11. spray irrigation of wastewater
Pretreatment of wastewater In excess of these components shall be rated using the point rating
system end will require an operator with an appropriate dual certification.
LAND .9ktPLICATION/RESIDUALS CLASSIFICATION! (Applies only to permit Holder)
I. V Land application of biosolids, residuals or contaminated soils an a designated site.
WASTEWATERTREATMETIT FACILITY CLASSIF)CATfON
The following systems shall be assigned a Class I classification, unless the flow is of a significant quantity or the technology is
unusually complex, to require consideration by the Commission on a case -by -case basis: (check if Appropriate)
1 Oil/water Separalor Systems consisting only of physical separation, pumps and disposal;
2. Septic Tank/Sand Filter Systems consisting only 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, Groundwater Remedialion Systems consisting only of pumps, air -stripping, carbon adsorption, disinfection and
disposal;
6. Fish farms with discharge to surface waters;
7. Water Plant sludge handling and back -wash water treatment;
8. Seafood processing consisting of screening and disposal.
9, Single-family discharging systems with the exception of Aerobic Treatment Units, will be classified it permilted alter
July 1, 1993 or if upon inspection by the Division, it is found 1ha41he system is not being adequately operated or
maintained. Such systems will be notified of the classification or reclassification by the Commission, in writing.
A.
777

The fallowing scale is used for rating wastewater treatment facilities: (circle appropriate
paints)
ITEM POINTS
(1) lnduslrW Pretreatment Units or Industrial Pretreatment Program (see definition No. 33)...................................................4
(2) DF FIGN FLOW OF PLANT IN gpd (not applicable to mn-coniarninaled cooling waters, sludge handling
Iatifitlas 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.....................................................................................................................................1
.......... .
20.001 - 50,000......................................................................................................................................2
50.001 - 100,000.......................................................................................................................I.............3
100,001 - 250,000..................................................... ..................... »...................................................... A
250,001 - 500,000...................................................................................................................................5
500.001 11,00D.000 ................................................................................................................................3
1.000.001 - 2,000.000.............. ........ .............................................. ...... ............. .................... ».......... 10
2.000.001 (and up) rate 1 polat additional for each 200,000 gpd capachy up to a
maximum of........................................................................30
Design Flow (gpd)
(3) PRELIMINARY UNITS/PROCESSES (sae defin tlon No.32)
(a) Bar Screens...................................................................................................._....................................1
or
(b) Mechanical Screens. Slalio Screens or Comminuting Devices ........................ .„...._....»._....»....... »....2
{c) Gril Removal..............................................................................................................................................1
or
(d) Mechanical or Aerated Grit Removal .............. ................................. .................... _.... ................. ......... .»2
(e) Flow Measuring Device ................... ................................................ ........ ................................. ....... ...........
i
or
(f) Instrumented Flow Measurement. ............. ........ . ... ........... I .... ........................ . ........ ................... .... ...... 2
(g) Preaeralion........................................................................................................................... ...............2
(h) Influent Flow Equalization..........................................................................................................................2
(1) Grease or Oil Separators - Gravhy........... ........._..............»......................................»................................2
Mechanical.................................................................................................................................................3
Dissolved Air Flotation ............................... .... ..... ............ »... .................. ......................... ....... .............. 8
I)) Prechlorinatlon..................................................................................»......................................................5
(4) PRIMARY TREATMENT UNITSrpROCESSES
(a) Septic Tank (see definition No. 43)........ »..................................................................................................2
(b) Imhoff Tank ............ ..................................................................................................................................5
(c} Primary Clarifiers.........................................................................................................................» ......»..S
(d) Settling Ponds or Settling Tanks for Inorganic Non -toxic Materials (sludge handling facilities for
water purification plants, sand, gravel. stone, and other mining operations except recreational
activities such as gem or gold mining)........................................................................................................2
(5) SECONDARYTRFATMENT UNfrsrpRoCESSES
(a) Carbonaceous Stage
(I} Aeration -Nigh Purity Oxygen System ........... ............ .......................................... ............ .20
DiffusedAir System.......................................................................................................10
Mechanical Air System (lined, floating or ro3or).......... _................ ............... ................... .8
Separate Sludge Reaeralion............................................................................................3
(11) Tddding Filler
HighRate.......................................................................................................................7
Standard Rafe................................................................................................................5
Packed Tower.................................................................................................................5
(iii) Biological Aerated Filter or Aerated
BiologicalFiher.............................................................»..............................................10
(Iv) Aerated Lagoons..........................................................................................................10
(v) Rotating Biological Conlactors.............................................. ........................................10
(vl) Sand Fillers -Intermittent biological. ...................... _......................................................... 2
Recirculatingbloiogicat.....................................................................................................3
(v€i) Slablllzation Lagoons ......................................... ..... ................ _......................
(vtu) Clarifier ...........................................................................................................................5
(Ix) Single stage system for combined carbonaceous removal of BOO and nilrogenous
removal by Nlrilication (see delihi0on No. 12)(Points for this item have to be In
addition to Items (5)(a)(i) through (5)(a)(viii),
utilizing the extended aeration process (see definition No,3a)..................... .....................
.2
utilizing other than the extended aeration process ............................................... ............ a
(x) Nuirlarll additions to enhance HOD removal......................................................................8
(xi) Biological Culture (-Super Bugs')addilion...................... ».................................... ............ 5
(b) Nitrogenous Stage
(i) Aeration - High Purity Oxygen System ......... ............... _............. ..................................... 20
DiffusedAir System.......................................................................................................10
Mechanical Air System (lined, floating or rotor)..................................................................8
Separate Sludge Raaaration.............................................................................................3
(it) Trickling Fi11er•High Rate...................................................................................................7
StandardRate......................................................................»........................................5
PackedTower... .......................................................... . .................................................. 5
(iii) Biological Aerated Filter or Aerated Biological Filter.............................................................1 0
(€V) Rotating Biological Conlac3ors......................................................................................10
(v) Sand Filter- iniermitteni biological...................................................................................2
Recirculating biological.....................................................................................................3
(VI) ckarifior............................................ ,,.................. ..................................................... .....5
(6) TERTIARY OR ADVANCED TREATMENT UNrrSrPROCErSSES
(a) Activated Carbon Beds
without carbon regeneration....................................................................................................5
with carbon regeneration.......................................................................................................15
(b) Powdered or Granular Activated Carbon Feed- V
without carbon regeneration..................................................................................................5
with carbon regeneration.....................................................................................................15
(c) Alf stripping..............................................................................................................................................5
(d) OelnllriliCalien Process..............................................................................................................................10

(a)
Electrodialyafs.......................................... ......... ........... ,........................................................................... S
(f)
Foam Separation ........ ........................................................ _...................................................................... 5
(W
ton Exchange............................................................................................................................................5
(h)
Land Application of Treated Effluent (sea definition No. 22b) (not applicable for sand,
gravel, stone and other similar mining operations) by high rate Infiltration......................................................4
(1)
Microscreens.......................................... ................................................................................................. _Ii
())
Phosphorous Removal by Biological Processes (See definition No. 26)........................................................20
(k)
Polishing Ponds - without aeration. ........................................................................................................... 2
withaeration...............................................................................................5
(I)
Post Aeration - cascade .................... ................ ............................ _............................................................
diffused or mechanical.........................................................................................2
(m)
Reverse Osmosis.........................................................................................................................................6
(n)
Sand or Mixed -Media Filters - low rate ........................ ......... ............ ............................................................
highrate......................................................................5
(o)
Treatment processes for removal of metal or cyanide...................................................................................1 5
(p)
treatment processes for removal of toxic materials other than metal or cyanide., .............. ........... ...... . ......... 15
(7)
SLUDGETREATMENT
(a)
Sludge Digestion Tank - Heated................................................................................................................10
Aerobic 6
Unheated 3
(b)
Sludge Stablllzation (chemical or thermal) .................................. ................................................................. S
{c)
Sludge Drying Beds - Gravity......................................................................................e..............................2
Vacuum Assisted...................-.........................-...........................................5
(d)
Sludge Elutriation..................... .........-....._..........-_...._..........-_...........................................5
(a)
Siudga Conditioner (chemical or thermal)....................................................................................................5
{f)
Sludge Thlckenor (gravity)..........................................................................................................................5
(g)
Dissolved Air Flotation Unit (not applicable to a unit rated as(3)(1)).............................................................a
(h)
Sludge Gas Utilization (including gas storage) ........................ .............................................................. ........ 2
(1)
Sludge Holding Tank - Aerated....................................................................................................................5
Nort•aerated.............................................................................................................................................2
()}
Sludge Incinerator (not including activated carbon regeneration)................................................................1 0
(k)
Vacuum Filter, Centrifuge, or Filter Press or other similar dewatering devices...................................................1 0
(6)
RESIDUALS LITIL17ATIONIMSPOSAL (including iremrated ash)
(a)
Lagoons ..................................... .....................................-....................- ..............................-....-..............2
(b)
Land Application (surface and subsurface) (sea definition 22a)
by contracting to a land application opormor or landfill operator who holds the land
application parmll or landlill pormlt..............................................................................................................2
(c)
Dedicated LAndfill(bufial) by the permitted o1 the wastewater treatment facility .............. _...............................
(9)
DISINFECTnCv
(a)
Chlorination.............................................................................................................................................5
(b)
Dechtorinalion.................................. ................................................................................................. .... ... 5
(c)
Ozone ..................... .................................................. ............ .......... -....... .............................. ................. 5
(d)
Radiation............:.....................................................................................................................................5
(10)
CHEMICAL ADDITION SYSTEM(S) ( sea definition No. 9) (not applicable to chemical additions rated as Item
(3)(j), (5)(a)(xl), (6){a), (6)(b), (7)(b), (7)(0). (9a), (9)(b) or (9)(c) 5 points each:
List......................................................................................................................................5
............ ............ ..... ................. ........ ...................... ..... I ...... ..-................. ............5
.........................................................................................................................5
.....................................................................................................................5
(1 1)
MISCI3IANEOLIS UNITSrPFOCESSES
(a)
Holding Ponds, Holding Tanks or Settling Ponds for Organic or Toxic Mal"als Including wastes
from mining operations containing nitrogen or phosphorus compounds In amounts significantly
greater than is common for domestic waslawater.........................................................................................4
(b)
Effluent Flow Equalization (not applicable to storage basins which are Inherent In land appficalion
systems)..................................................................................................................................................2
(c)
Stage Discharge (not applicable to storage basins Inherent in land application systems)..................................5
(d)
Pumps......................................................................................................................................................3
(a)
Stand -By Power Supply.............................................................................................................................3
(f )
Thermal Pollution Control Device.................................................................................................................3
TOTALPOINTS..........................................................................
ChasI...........................................................................................................5-25 Points
Class11............................................................. ........................ .................... 26-50 Points
Ciasslt............................................................................................... ....51-65 Points
C1assIV............................... ............................................ ........................... 66-Up Points
Facilities havlrtg a rating of one through four points, Inclusive, do not require a csrtilied operator.
Facilities having an aclivaled sludge process will be assigned a minimum classification of Class it.
Facilities having treatment processes for the removal of metal or cyanide wilt bs assigned a minimum classification of Class 11.
Facilities having treatment processes for the biological removal of phosphorus will be assigned a minimum ciassilication of Class Ill.
.0004 DEFWTIONS
The following definitions shalt apply throughout this Subehapler.
(1) Activated Carbon Beds. A phrsicatrchemical rnethod for reducing so€ able organic malarial from wastewater otfiuenl; The colurrxa•type beds used h t-;s method will have
a flow rate varying Item two to eight gallons per minute per square tool and may be either uphow or downfiaw carbon beds- Carbon may or may not be rsgeneraled on the
wastewater treatment plant site;
(2) Aerated Lagoons_ A basin in which all solids ere mainlainad in suspension and by which Nological oxidation a organic maner is reduced thrwgh artificially accelerated
€ranOw of oxygen on a flow -though basis;
(3) Aeralion. A process of bringing about Intimate contact bolween air or high pudly oxygen in a liquid by bpeaying, aglation or diffusion;(3a) Extended Aeration, An
adtivated sludge process utilizing a rririmurrr hydrauiic detention time or 18 hours.
(4) Agdcuhurally managed site. My site an which a crop is pioduc4d, managed, and harvested (Crop includes grasses, grains, trees, etc);
(5) Air Stripping, A procoss by which the ammonium ion is first convenod to 66601v06 anmonla IOH 411,14 ilem) wilh the ammoria than released to the atrmosphere by
physical rneans; w other similar processes which remove petroleum products such as bor]eene, toluene, and aytene;
(61 Carbon Reganwarion, the regeneration of exhausted carbon by the use of a runt@ to prwida exLamely rrigh temperatures which volabtize and oxidize Vie absorbed
Impurities; S
(7) Carbonaceous Stage. A slag@ of wastewater treatmem designed to acheve 'secondary' ojauen€ limits;
(8) Centrifuge. A mechanizal device in which cen!W;r9al lace is used to separate solids Irom liquids or to sopa+ale liquids of dillelenl densides,
(9) Ghomical Adtldiw Systems. The adddtion of chomical(s) to waslewator at an application pant for purposes of improving solids removal, pH adiusbmsn% alkalinity control,
etc,; the capability to exporimunl with dtferanl chemicals end &llorenl application points 10 achieve a specific result will be consid@red one sysr- : the capability to add

chemJ.,.€(s) to dual unils will be rated as one system: capability to add a charrital at a different applitatim potnLi. for different purposes will resuft In the systems being
rated as separate systems;
(10) Chemical Stu699 Conditioring. The a,544orl of a chemical comhpouhd wch as rime, ferric chioridel, or a polymer to wet sludge to coalesce the mass prior to Its
application k'. a dewaturing device;
(tt) Closed Cycia Systems. Use of holding ponds or holding tar4cs Ior corrialomani of wastewater containing kxorgaric, non -toxic maloviars from sand, gavel, crushed
stone or other simlar operations. Such syslomts shall carry a maxinum of two pants regardless of pumping facilities oc any olhor appurtenances;
(12) Combined Ramwvaf of Carbonaceous BOO and Nitrogenous Romova) by Nitrification A single stage system roofed to achieve peimill oultwnt linnets on BOD and
ammonia ritrogen within the same biological reactor;
'13) Dacttorinailm. The partial or conilpetY reduction of rasiduad dYorine, In a ligald by any chemical or physical process;
14) Oeritrihcalion Process. The conversion of nitralo-nitrogen to tilrogon gas;
(15) Eieclrodielysle, Process for removing Ionized sails from water though the use or lonselectiva ion -exchange membranes;
(16) Filter Press, A process oporaled mechanically for partially dewalaring sludge;
(17) Foam Separation. The planned frothing of wastewater or waslawater effluent as a means of removing excessive amounts of detergent materials through the
introduction of air in the form of line bubbles: also called foam fractionation;
(18) Grit Removal. The process of removing grit and other heavy mineral matter horn wastewater;
(19) Imhaff Tank. A deep two story wastewater tank consisting of an u.ppor sedimcnittion chamber and a lower sludge d',gasion chamtbet.
(20) Instrumented Flow Measuoment- A device which IndcaleL and records rats of haw;
(21) Ion Ezchenge, A chordcal process In which Ions from two dlfaront mcleczdes are exchanged;
(22) Land.application:
(a) Sludge Disposal. A final sludge disposel method by whlrh wet sludge may he applied to land either by spraying on the surface or by subsurface Injection (i.e..
cKsol plow): inol applicable )or laves of sludge described In (11) of this Rufs);
(b) Treated Eflksant, The process of spraying treated wastewater onto a land area or other mathOds of application or wastewater onto a land area as a moans of lima)
disposal' or treetrnent:
(23) Miuoscrsen, A low speed, contiruously back•washred, rotating drum filler operating tinder gravity condtions as a potisHrsg method )or removing suspended solids
from elfluanl;
(24) Nitrification Process. The biochemical conversion of unoxidzed rrlrogen (ammonia and orgaric nitrogen) to oxidized nitrogen (usually nitrate):
(25) N€Voganous Stage. A separate stage of wa$IGWatw treatment designed la the specific puposo of corrvertng ammonia nitrogen to nirata.nitrogon:
(26) Phosphate Removal, Biological. The removal or phosphorus from wastewater by an oxiclanoxic process designed to enhance Iuxury Uptake of phosphorus by the
rricrocrgandsfns-
(27) Polishing Pond. A holding pond folowing secondary treatrmerd with sulfiaent detention time to allow set Ing of fne€y wspendod solids:
(28) Post Aeration. Aeration loItowing corwenbonai secondary yealmsnl units Ic Inctaase effluent D.O. or for any other purpose;
(29) Post Aeration. (Cascade) A poiisYting method by whirit dissolved ozygen Is added to the olnuoni. by a nomnedharieal, gravely means or flowing dawn a series 01
stopc or weirs- The flour occixdN across the slops Or weirs moves In a faihy trin layer and the eparalion of the cascade re(Vires no operator adjustment; thus, zero
points are assigned oyefi though Or is an essential slop to msaetng the limits of the discharge permit;
(30) Pnwderod to Granular Adivatod.Carbon Fead. A biophysical carbon process that uCizes biological activity and organic absorption by using powdered or gr2nrJl2r
activated carbon; Virgin or regeneraled carbon Is lead controlled into the system;
(31) Prsaeration. A tarn constructed to p;cri& eeraVon prior to primary VeaVr4rit;
(32) Preliminary Units. Unit operations in VW treatment process, such as screening and ccmamirrrCon, that prepare 117a liquor for subsequent major operations;
(33) Industrial Provealment.
(a) Pre-treatment Unit, Industrial. The condlioring of a waste at its source before discharge, to remove or it; neultrarize substances Injurious to sewers and treatment
processes or to effect a partial reduction In load on the treatment process which Is operated by no same governing body as the wastewater treatment plans being
rated:
b) Pie -treatment Program, Industrial . must be a State or EPA required prog•am 10 receive paints on the rating shoat;
(34) Primary Clarifiers. The first sooting larks through which wastowaler is passed in a troatrnarri works [or the purpose of removing settleablo and suspended solids and
600 which Is associated with the solids;
(35) Pumps. All Inflverd. affluent and Irrpfarrt pumps;
(36) Radiation. Disinfection or sterilization process utilizing devices arrirong ultraviolet or gamma rays;
(37) Reverse Osmosis. A treatment process In which a heavy corriam€naled liquid Is pressurized vrough a manlbcano forming nearly pure liquid free from suspended solids;
(38) Rotating Biological Contractors, A fixed biological growth process In which wastewater Rows through tanks in which a series of parbaly submerged circular surfaces
are rotalad'
(39) Sand Filters;
(a) Interminom Biological- Filration of eilluent Iollowirg $optic tanks, lagoons, or some other trealment process in which lu-ther Nodecamposl lion Is expected to
produce desired oPluents: Hydraulic Ioadng roles on these Iillars are tomprad In gpolac and have a r"ling low gpwif {less than ona);
b) Racirculating biologicat - the same type of sand filter as defined in Subparagraph (39) (a) of this Rule with the added capaNiity to recycle affluent back through the
$end Tiller- .
(40) Sand or Mixad-Media Filters, A polishing process by which efflueol limits va achieved through a frthor redaction of suspended solids;
(a) low rate -- gravily, hydraviicaiiy loaded filler with loading rates In the one to three gprusf range;
(b) high rate a pressure, hydraulically icaded filter with loading rates In the Ave gpmisi range; At any rats, the loafing rate will exceed throe gprTVsf;
(41) Secondary CljAws. A tank which follows the biological Unit or tfsatment piano and wNch has the purpose of ramovirtg sludges associated with lha biological
trealmonl units;
(42) Separate Sludge Reparation. A part of the contact stabilization process v"re the activated sludge is transferred to a tank and aerated before returning 1; to the
contact basin•
(43) Soplic Tank. A singra-story settling tank in which settled sludge Is in contact with the wastewater flowing through the tank; shall ml ba applicable for septic tank
systems serving single lamiiy residences having capacity of 2,000 gallons or less which discharge to a rtiirification field;
(4-4) Sludge Digestion. The process by which organic or volatile manor and sludge is gasified. Ilquehad, mineralized or converlad into more stable organic matter recVph
the activity of firing organisms, which includes aerated holding tanks;
(45) Sludge Drying Beds, An area comprising natural or artificial layers of porous materials upon which digeslad sewage sludge is dried by drainage and evaporation;
(46) Studgo Elutristion. A process or sludge corldi6oning in which certain coruetuenls are temoved by successive washings with fresh water or plant effluent;
(47) Sludge Gas Vtiliza4on. The process or using sewage gas for lho purpose of heating buildings, driving engines, elc,;
(43) Sludge Holding Tarok (Aerated and Nomeraled). A larA utilized ire small wastewater L-salment plants not cortuinng a digosty in wNch si,udge may be kept fresh,
and supernatant withdrawn prior to a drying mabhod (i.e. slvdge drying bads); Ths may be done by adding a small emota'tt of air simply to keep the sludge Irosh. but not
nocassarily an amount nal would be n6u7.rired to achieve stabilization of organic maser. A nonaoralod tank world simply be used to decant sludge prior to dewa,aring and
would not allow long periods (several days of del"on) without resulting odor problems:
(49) Sludge fac;r>eratws. A Vnace designed 10 bum sludge and to remove all moisture and cormbus8bra materials and reduco tie sludge to a sleriie ash;
(50) Sfudga Stabiiizaton (Chemical or Thamnal). A process to make treated srudga less odorous and pu7ascibie, and to reduce tho pathogurtic organism content; TNs may
be done by pH ac�usynonl, chlorino dosing, or by heal treatment;
(5t) Sludge Thickener. A type or sedimentation lank In which the sludge Is per milted in settle and Ockon through agitation aril gravity:
(52) Slabilitaliorq Lagoon. A typo of oxidation lagoon in which biological oxidalim of organic martar is ollaned by natural transfer of oxygen to the water from air (not a
polishing pond); .
(53) Stand -By Power Supply, Oen site or portable olucvical gonorating &quprr n : '
( :) Static Screens. A stationary screen designed to remove solids, iodudng non -biodog'ad able panictiale (Aoalable solids, suspended solids and 1300 zeduction) from
municipal and industrial wastewater treatment systems;
(55) Tardary Tnearrienl. A stage of troalmenl following secorsdary witch is primarily for the purpose of ellfuernl polishing; A setting lagoon or sand or coal fifier right be
om€ioyad for this purpose:
(56) Triermial Potfution Control Dovice- A device providing [or the Fransfw o1 heat hum a 5uid llo ipi; in tubes to another huid outside the tubes, a vita versa: or ether
rrwans or rogtlating liquid lomperaatre1-
(57) Themmal Sludge Conditioner. A condtion)ng process by which heal is adder for a pwtracled period el time 10 improve the dewaierabiliy of sludge by the saub6zing
and hydraui 4irg of the smaller and more Nghly hydrated sludge particles;
(55) Toxic Maivials. Those wastes or combirsaftris of wastes, including 6seasa causing agents which altoe dschargo and upon oxposure, ingasdon, inhalation or
assimflalion Into any osgarism, either directly from the onvirorvnanf or indractly by ingestion through food chains, wild cause death, disease, behavioral abnormal.•ias,
cancer• genetic mutations, physiological malfunctions (inciudng malfunctions in (&production) or physical de(prmaeons. In such organisms or Iheif ❑€!spring; Toxic materials
include, by way of illustration and not limiuikion: lead, cadmium, chromium• mercury, vanadium, arsoric, zinc, orrno,nilro-c Horobenzom (ONCE), polych1winaled biphanyfs
(PCBs) and dchlorodphenyl Irichloroelhano (DDT); and arty other rtzlorials that have « may heroallor be detarmioed 10 have toxic popertes;
(59) Trickling Filter. P. biological Vilatment unit consisting or n malarial such as woken stono of raci•. over which wasto,walor is distributed: A Ngh :a:e trickling t"tar is one
wNch opwatod at botween 10 and 30 mgd por acre. A low rate trickling llter is one which is dosignnd to oporalo at orw to four m9d per acre;
(647) Trickling FiNtif (Packed Towor). A plug flow type of opwalion in whch wastewater Ilow-s dawn thvo-fgh successive layers of media or riumo material; organic malorlal
is romevod continually by llw active biologicat fixed growth in oath successive ia}'or. Tris method may produce 'secondary- qualiry elnuwl• or may be adapter to
p eo.rce a re Viliod oI'luenl;
(61) Vicu.rn Fii;er, Can itugos• or Filter Pressos, Do.icos which are d35igrtrc t, remove excuss water from o4,vr cigosiad or undgoslud sludgu prior to dse:;ual or
lxFdhui trommeni. '