WQ0006317_Final Permit_19970715

State of North Carolina
Department of Environment,
,. Health and Natural Resources
Division of Water Quality
James B. Hunt, Jr., Governor
Jonathan B. Howes, Secretary
A. Preston Howard, Jr., P.E., Director
July 15, 1997
Mr. V.A. Yarborough, V.P. Operations
Colonial Pipeline Company
P.O. Box 18855
Atlanta, GA 30326
Dear Mr. Yarborough:
IDEHN1=11
SCANNED
DATE: i /k,51 17
Subject: Permit No. WQ0006317
Colonial Pipeline Company
Greensboro Terminal
Wastewater Spray Irrigation
Guilford County
In accordance with your application received March 3, 1997, we are forwarding herewith Permit
No. WQ0006317, dated July 15, 1997, to Colonial Pipeline Company for the continued operation of the
subject wastewater treatment and spray irrigation facilities.
This permit shall be effective from the date of issuance until June 30, 2002, shall void Permit No.
WQ0006317 issued February 11, 1993, and shall be subject to the conditions and limitations as specified
therein. Please pay particular attention to the monitoring requirements in this permit. Failure to establish
an adequate system for collecting and maintaining the required operational information will result in future
compliance problems.
If any parts, requirements, or limitations contained in this permit are unacceptable, you have the
right to request an adjudicatory hearing upon written request within thirty (30) days following receipt of
this permit. This request must be in the form of a written petition, conforming to Chapter 150B of the
North Carolina General Statutes, and filed with the Office of Administrative Hearings, P.O. Drawer
27447, Raleigh, NC 27611-7447. Unless such demands are made this permit shall be final and binding.
If you need additional information concerning this matter, please contact Mr. Randy Kepler at
[phone] extension 544.
;Sincere1,
VP!- . Preston Howard, Jr., P.E.
cc: Guilford County Health Department
Winston-Salem Regional Office, Water Quality Section
Winston-Salem Regional Office, Groundwater Section
AIM Bob Cheek, Groundwater Section, Central Office
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

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NORTH CAROLINA
ENVIRONMENTAL MANAGEMENT COMMISSION
DEPARTMENT OF ENVIRONMENT, HEALTH AND NATURAL RESOURCES
RALEIGH
SPRAY IRRIGATION 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
Colonial Pipeline Company
Guilford County
FOR THE
continued operation of a 7,140 GPD spray irrigation treatment and disposal facility consisting of a holding
tank, an oil/water separator, an air stripping unit, a 147,000 gallon clay -lined aerated lagoon with two 3.0
HP aerators, a 257,000 gallon clay -lined aerated lagoon with two 5 HP aerators, approximately 420 linear
feet of three inch suction line, an 80 GPM pump station, approximately 2,511 linear feet of three inch
distribution force main, 2,820 linear feet of four inch force main, 24 spray heads, 5.6 acres of spray area,
and all associated pipe fittings, valves, and appurtenances to serve Colonial Pipeline Company, with no
discharge of wastes to the surface waters, pursuant to the application received March 3, 1997, 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 June 30, 2002, shall void Permit No.
WQ0006317 issued February 11, 1993, and shall be subject to the following specified conditions and
limitations:
I. PERFORMANCE STANDARDS
The spray irrigation facilities shall be effectively maintained and operated at all times so that
there is no discharge to the surface waters, nor any contamination of ground waters which
will render them unsatisfactory for normal use. In the event that the facilities fail to
perform satisfactorily, including the creation of nuisance conditions or failure of the
irrigation area to adequately assimilate the wastewater, the Permittee shall take immediate
corrective actions including those actions that may be required. by the Division of Water
Quality, such as the construction of additional or replacement wastewater treatment and
disposal facilities.
2. 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.
3. The residuals generated from these treatment facilities must be disposed in accordance with
General Statute 143-215.1 and in a manner approved by the North Carolina Division of
Water Quality.

4. Diversion or bypassing of the untreated wastewater from the treatment facilities is
prohibited.
5. The following buffers shall be maintained:
a) 400 feet between wetted area and any residence or places of public assembly under
separate ownership,
b) 150 feet between wetted area and property lines,
c) 100 feet between wetted area and wells (does not apply to monitoring wells),
d) 100 feet between wetted area and drainageways or surface water bodies,
e) 50 feet between wetted area and public right of ways,
f) 100 feet between wastewater treatment units and wells (does not apply to monitoring
wells), and
g) 50 feet between wastewater treatment units and property lines.
Some of the buffers specified above may not have been included in previous permits for
this waste treatment and disposal system. These buffers are not intended to prohibit or
prevent modifications, which are required by the Division, to improve performance of the
existing treatment facility. These buffers do, however, apply to modifications of the
treatment and disposal facilities which are for the purpose of increasing the flow that is
tributary to the facility. These buffers do apply to any expansion or modification of the
spray irrigation areas and apply in instances in which the sale of property would cause any
of the buffers now complied with, for the treatment and disposal facilities, to be violated.
The applicant is advised that any modifications to the existing facilities will require a permit
modification.
H. OPERATION AND MAINTENANCE REQUIREMENTS
1. The facilities shall be properly maintained and operated at all times.
2. Upon classification of the facility by the Certification Commission, the Permittee shall
employ a certified wastewater treatment plant operator to be in responsible charge (ORC) of
the wastewater treatment facilities. The operator must hold a certificate of the type and
grade at least equivalent to or greater than the classification assigned to the wastewater
treatment facilities by the Certification Commission. The Permittee must also employ a
certified back-up operator of the appropriate type and grade to comply with the conditions
of Title 15A, Chapter 8A, .0202. The ORC of the facility must visit each Class I facility at
least weekly and each Class 111,11I, and IV facility at least daily, excluding weekends and
holidays, and must properly manage and document daily operation and maintenance of the
facility and must comply with all other conditions of Title 15A, Chapter 8A, .0202.
3. A suitable vegetative cover shall be maintained. Cuttings from the cover crop shall be
disposed of in a municipal landfill.
4. Irrigation shall not be performed during inclement weather or when the ground is in a
condition that will cause runoff.
5. Adequate measures shall be taken to prevent wastewater runoff from the spray field.
6. 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.
7. The average annual weekly application rate shall not exceed 0.49 inches with a normal
application rate of 25.48 inches/year or a maximum application of 33.75 inches/year.
No type of wastewater other than that from Colonial Pipeline Company shall be sprayed
onto the irrigation area.
2

9. No traffic or equipment shall be allowed on the disposal area except while installation
occurs or while normal maintenance is being performed.
10. Public access to the land application sites shall be controlled during active site use. Such
controls may include the posting of signs showing the activities being conducted at each
site.
11. The soil in the spray areas shall be maintained above a pH of 6.5.
III. MONITORING AND REPORTING REQUIREMENTS
1. Any monitoring (including groundwater, surface water, soil or plant tissue analyses)
deemed necessary by the Division of Water Quality to insure surface and ground water
protection will be established and an acceptable sampling reporting schedule shall be
followed.
2. Adequate records shall be maintained by the Permittee tracking the amount of wastewater
disposed. These records shall include, but are not necessarily limited to, the following
information:
a. date of irrigation,
b. volume of wastewater irrigated,
c. field irrigated,
d. length of time field is irrigated,
e. continuous weekly, monthly, and year-to-date hydraulic (inches/acre) loadings for each
field,
f. weather conditions, and
g. maintenance of cover crops.
3. The effluent from the subject facilities shall be monitored by the Permittee at the point prior
to irrigation every March, July and November for the following parameters:
Oil and Grease TSS
pH NH3 as N
Sodium Magnesium
Calcium
Sodium Adsorption Ratio by Calculation
4. The Permittee shall collect composite soil samples from the spray fields annually and have
them analyzed for the following parameters:
pH, su
Sodium
Conductivity
Arsenic
Calcium
Nickel
Leada
Cadmiuma
Antimony
Magnesium
Samples shall be collected form the top eight inches of soil in each spray field. These
samples will be composited such that each composite represents the soil from the six
adjacent spray fields. The analytical results shall be reported to the Winston-Salem
Regional Office within 60 days of the sample dates.
a Soils analysis for these parameters shall be conducted once prior to permit renewal
on soils from each field which has received effluent during the permit cycle.

J-
5 Three (3) copies of all operation and disposal records (as specified in condition III 2) on
Form NDAR-1 shall be submitted on or before the last day of the following month. Three
(3) copies of all effluent monitoring data (as specified in condition III 3) on Form NDMR-1
shall be submitted on or before the last day of April, August, and December. All
information shall be submitted to the following address:
NC Division of Water Quality
Water Quality Section
Facility Assessment Unit
PO Box 29535
Raleigh, NC 27626-0535
6. Noncompliance Notification:
The Permittee shall report by telephone to the Winston-Salem Regional Office, telephone
number 910-771-4700, 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 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 sludge digester, the known passage of a slug of
hazardous substance through the facility, or any other unusual circumstances;
b. Any process unit failure, due to known or unknown reasons, that renders the facility
incapable of adequate wastewater treatment, such as mechanical or electrical failures of
( pumps, aerators, compressors, etc.;
c. Any failure of a pumping station, sewer line, or treatment facility resulting in a by-pass
directly to receiving waters without treatment of all or any portion of the influent to
such station or facility; or
d. Any time that self -monitoring information indicates that the facility has gone out of
compliance with its permit limitations.
Persons reporting such occurrences by telephone shall also file a written report in letter
form within five (5) 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
Monitoring wells MW-1B, MW-2, MW-5A, MW-6, MW-7 and MW-8 and the final
effluent from the lagoon, shall be sampled every March, July and November for the
following parameters:
Water Level (Monitoring wells only)
pH
Chloride Nitrate (NO3-N)
Total Dissolved Solids Total Ammonia
Volatile Organic Compounds - using EPA Method 602
Method 6230D (Capillary - Column), "Standard Methods For The Examination of
Water and Wastewater", 17th ed., 1989
The measurement of water levels must be made prior to sampling for the remaining
parameters. The depth to water in each well shall be measured from the surveyed point on
the top of the casing.
4

The measuring points (top of well casing) of all monitoring wells shall be surveyed to
provide the relative elevation of the measuring point for each monitoring well.
The results of the sampling and analysis must be received on Form GW-59 (Groundwater
Quality Monitoring: Compliance Report Form) by the Groundwater Section, Permits and
Compliance Unit, P.O. Box 29578 Raleigh, N.C. 27626-0578 on or before the last
working day of the month following the sampling month.
3. Any additional groundwater quality monitoring, as deemed necessary by the Division, shall
be provided.
4. The COMPLIANCE BOUNDARY for the disposal system is specified by regulations in
15A NCAC 2L, Groundwater Classifications and Standards. The Compliance Boundary
for the disposal system constructed prior to December 31, 1983 is established at either (1)
500 feet from the waste disposal area, or (2) at the property boundary, whichever is closest
to the waste disposal area. An exceedance of Groundwater Quality Standards at or beyond
the Compliance Boundary is subject to immediate remediation action in addition to the
penalty provisions applicable under General Statute 143-215.6A(a)(1).
In accordance with 15A NCAC 2L, a REVIEW BOUNDARY is established around the
disposal systems midway between the Compliance Boundary and the perimeter of the
waste disposal area. Any exceedance of standards at the Review Boundary shall require
remediation action on the part of the permittee.
V . INSPECTIONS
1. Adequate inspection, maintenance, and cleaning shall be provided by the Permittee to
insure proper operation of the subject facilities.
2. The Permittee or his designee shall inspect the wastewater treatment 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 to
the Division of Water Quality or other permitting authority.
3. Any duly authorized officer, employee, or representative of the Division of Water Quality
may, upon presentation of credentials, enter and inspect any property, premises or place on or related to the disposal site or facility at any reasonable time for the purpose of
determining compliance with this permit, may inspect or copy any records that must be
maintained under the terms and conditions of this permit, and may obtain samples of
groundwater, surface water, or leachate.
V I . GENERAL CONDITIONS
1. This permit shall become voidable unless the facilities are constructed in accordance with
the conditions of this permit, the approved plans and specifications, and other supporting
data.
2. This permit is effective only with respect to the nature and volume of wastes described in
the application and other supporting data.
5

3. This permit is not transferable. In the event there is a desire for the facilities to change
ownership, or there is a name change of the Permittee, a formal permit request must be
submitted to the Division of Water Quality 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 Water Quality in accordance with
North Carolina General Statute 143-215.6(a) to 143-215.6(c).
5. 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.
6. A set of approved plans and specifications for the subject project must be retained by the
Permittee for the life of the project.
7. The annual administering and compliance fee must be paid by the Permittee within thirty
(30) days after being billed by the Division. Failure to pay the fee accordingly may cause
the Division to initiate action to revoke this permit as specified by 15A NCAC 2H .0205
(c)(4).
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
OW and under such conditions and limitations as it may deem appropriate.
Permit issued this the Fifteenth day of July, 1997
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
. Preston Howard, Jr., P.E., Director
Division of Water Quality
By Authority of the Environmental Management Commission
Permit Number WQ0006317

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9

RATING SCALE FOR CLASSIFICATION OF WATER POLLUTION CONTROL SYSTEMS
Name of Facility:
Owner or Contact
7 /zc)
Mailing Address: i'-c 6'If 3
County: Telephone: 9/ o % aci 5/-
Present Classification: New Facility Existing Facility
NPDES Per. No. NC00 Nondisc. Per. No.WQ coo C�G S j9 Health Dept.Per No.
Rated by: f ICE Telephone: -7 V?c, c, Date:��' ?c3 -1�
Reviewed by: Health Dept. Telephone:
Regional Office Telephone:
Central Office Telephone:
ORC: Grade: I" Telephone:
Check Classification(s): Subsurface Spray Irrigation Land Application
Wastewater Classification: (Circle One) I 1I ; III IV Total Points: .3 6
SUBSURFACE CtASSF"MON
(check all units that apply)
1-septic tanks
2._pump tanks
3. siphon or Pump -dosing systems
I --- sand fitters
5. grease trapfinterceptor
f_oll/water separators
7`_gravify subsurface treatment and disposal:
8. pressure subsurface treatment and disposal:
SPRAY IRRIGATION CLASSIFICATION
(check all units that apply)
1_ preliminary treatment (definition no. 32 )
2.—Iagoons
3. septic tanks
4- pump tanks
5, V pumps
6—sand tiltem
7. grease trapfinterceptor
8, oll/water separators
g. disinfection
10chemical 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)
1. Land application of biosolids, residuals or contaminated soils on a designated site.
-------------------------------------------------------------
WASTEWATER TREATMENT FACILITY CLASSIFICATION
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 tt Appropriate)
1. Oi1/water Separator Systems consisting only of physical separation, pumps and disposal;
2 Septic Tank/Sand Fitter Systems consisting only of septic tanks, dosing apparatus, pumps,sand fitters, disinfection
and direct discharge;
3- Lagoon Systems consisting oniy of preliminary treatment, lagoons, pumps, disinfection, necessary chemical treatment for
algae or nutrient control, and direct discharge;
4. Closed -loop Recycle Systems;
S_Groundwater Remediation Systems consisting only of oNwater separators, pumps, aIr-stripping, carbon adsorption, disinfection
and disposal;
6. Aquaculture operations with discharge to surface waters;
Water Plant sludge handling and back -wash water treatment;
1. _Seafood processing consisting of screening and disposal.
9 Single-lamily discharging systems, with the exception of Aerobic Treatment Units, will be classified M permitted after July 1,
1993 or If upon inspection by the Division, It Is found that the system is not being adequately operated or maintained. Such
systems will be notified of the classification or reclassification by the Commission, to writing.

zy
The following scale is used for rating wastewater treatment facilities: (circle appropriate points)
ITEM POINTS
(1) Industrial Pretreatment Units or Industrial Pretreatment Program (see definition No. 33)..»................... ....... ......
(2) DESIGN FLOW OF PLANT IN gpd [not applicable to non -contaminated cooing watsm, sludge handling facilities for
water purification plants, totally dosed cycle systems(see definition No. 11l and facilities consisting only of hem
(4)(d) or items (4)(d) and (11)(d))
20.001
60.001 100.000.. .»«».».» ..» »»..»..» »« » �....».r..».....»» »»..».»....».......«»......... «....« .....».3
100.001 250.000.„...»...«.»..»..... ».»»..»_.».».»..»........»««...»....»..«»«...».......„.»»...........»..»»......4
250.001 - 500,000.. ....» ....».».»..»......_»......»..„...»».»...»............... »»..........»............»....« «..5
500.001 - 1,000,000.. .... ..».....«.».....« ...... «» .......» .«.....»..»_.«»».».».........»....»..»..» .......»....A
1.000.001 -
2.000.001 (and up) rate 1 polnt additional for each 200.000 gpd capacity up to a maximum of ------ 30
Design Flow (gpd)
(3) PRELIMINARY
U nvPROCESSES (see definition Na.32)
(a)
or
(b)
Mechanical Screens. Static Screens or Comminuting Dsvlcas.„
(c)
Got Removal...........».. ».... _.».«...»....»..»....� « .«r._ ..»».»...„...»».» .. ».» ..» _..»._.1
or
(d)
Mechanics! or Aerated Grit Rerrtovi.»» » ...»«..»......»..»»......_ »»........» ........«..».. ».»...» .....».�_ 2
(e)
Flow Msaswlg Device »..»----.»».«.»..»_...»»...«..
or
(f )
Instrumented Flow Measurement.....»»...»»..»».. »« _..w»»....».» .....» .».»»..». »»...._.w...» .... « ...2
(g)
Press ration.. .„......»»».»...».»...........»».»..„..»..«... «.».... »«»..».....„..».»«»..».. ».»...».»..2
(h)
Influent Flow Equalization ..... »... »...» . »..»».».»..»..».»...»....................»».......»....„.»»..»..»....»....».»2
(I)
Grease or Oil Separators - Gravity._„«»_...._..«. _ «... _.«_........».«»._..»«....... .
Mechanical.......».........»........»....._».»»........».«.».»»........._.......»......_....�..»..«......�«.....».............�
Dissolved Air
())
Preehbrinatbn.».._.».»»...»....�............»_....»....»«..».»�_..._..„.»�.......»......»........»......»«....^�...3
(4) PRIMARYTREATMENTLIIriS/PROCESSES
(a)
Septic Tank (see definition No. 43).„ .....» »».» 2
(b)
Imhoff Tank...»...........» «.».„...» .» »...............»«......»....._.»._....»»»»..».....«».......».»..»»»».»..--6
(c)
Primary Clartflers.._............ .. ...»».. ...»... ..«. »..»».«.....«...»»........ ..».5
(d)
Settling Ponds or Settling Tanks for Inorganic Nontoxic Materials (sludge handling factthles for water
purification plants. sand, graysL stcns. and other mining opermbns except recreaibrW activities such as gem
orgold mining).» --- .------------------ ».»....... «» ..»_.».»».»._._......_....—....»»...»..»...—.»......_».....»--2
(5) SECOADARYTREATMENTUNrrSPROCESSES
(a)
Carbonaceous Stage
(I) Aeration -high Purify Oxygen System..... »„.20
Diffused Air 0
Mechanical Alr System (fixed, flowing or rotor—».».» ....„A
Separate Sludge
(II) Trickling Filer
HighRate...— .._.._............. -7
Standard Rate -
PackedTower. «_..»» .»«« ...........»... « ....».„«.»»«.»..»»..».._...».........».......... S
on) Biological Aerated Mar or Aerated Bblogkal Mar ..».�
(Iv) Aerated Lagoons.„......_...»»....»».»...»........ ...........»„............. »«... .f,�1 l
(v) Rotating Biological Comactors»._« ». 0
(VI) Sand Filters -Intermittent t biological. __»».....„...2
Recirculating biological. 3
(vll) Stabilization Lagoons ».«..««—».».».»..».»_._....«»..»_.»»».».»..«».—.....».».«.».»...._,5
(Ix) Single stage system for combined carbonaceous removal of BOO and nkrogencus removal by
nitrdicatlon (see detM;on No. 12)(PoWs for this Item have to be in addition to items
(5)(a)(1) through (5)(a)(vill).
utlttting the extended aeration process (see definition No.3a)
utilizing other than the extended aeration
WNutrient addhbca to enhance SOD removal...»...»»..» .. .»............»»......» ..„........».5
(XI) Biological Culture ('Super
(b)
Nitrogenous Stage
(1) Aeration - High Purity Oxygen System_- 0
Diffused Air System....-..-.. —» ..»».».».».... »».».»..... ...»»10
Mechanical Air System(fixed, floating or rotor)_.w.._._ ..,. »« —. A
Separate Sludge I4eaerstion.» »..».........»«................».»»»..».»....»...«.»».».».»..»«3
(II) Trickling Fitter -High Rate « 7
Standard Rate- .....»».S
PackedTowsr»..» .»«« ... _.. .. »..«.».... ... ....»„„».».»....«. S
Oil) Biological Aerated Filler or Aerated Biological Filter r _ .10
(Iv) Rotating Biological Contactors» ».»........... » «.».»..».......»...»....».»............».»....10
(v) Send Filter - Intermittent
Recirculating biological —
NOClantifer.. ..._» ».»..........�»........ ».....».» _..»...... ».�».S
(6)TERTWWORADVANCE)TREATMWLNrrSPFCCESSES
(a)
Activated Carbon Beds -
without carbon regeneration..........«...._.........._.„»........»..».._.»»....... S
with carbon 5
(b)
Powdered or Grartular Activated Carbon I"
without carbon regeneration.._..»» ..............»..»»..» .»»».....«»» ...»..».. .5
with carbon regeneration...„...».»....».».....«»......._......�»_».»........»» ..........:.......»»»tom,
(c)
Air stripping ......».»...».......»».--- ....»...»«.».....».........».................._..._»....»...—....».........»..... — -ca"I
(d) Denhrifkatbn
(a) Efactrodlalyais......._.._............«»...............«.»»........_..... w _... _..._ ..»» .... — .»»_ 5
(f) Foam Separation«.......««.«„»«.»..S
(g) ion Exchange«.........»»..»....»._».»....._........».................. » ..». .............._.S
(h) Land Apptfcatbn of Treated Effluent (caw definition No. 22b) (not applicable for�&and. gravel, stone
and other sbnflar mining operations) by high rate infil ratlonn«.�».....»_» _ ._...«.. _ «.»»._-.«..4�
i1? Phosphorous Removal by Biological Processes (See detinhbn No. 2B)»....„� .....„«....„... «.».».«...»»..«20
(it) Polishing Ponds - without aeralfon.»..... _.........».» »2
withaeration.»... . .»»..»_............ »»«............. ........» ..........»......_.....»..S

(1)
Post Aeration - cascade ............................. .0 IL ................................................................................................
diffusedor mechanical........................................................................................................2
(m)
Reverse Osmosis........................................................................................................................................6
(n)
Sand or Mixed -Media Filters - low rate ............................. ............................... .................................._...2
highrate......................................................................5
(0)
Treatment processes for removal of metal or cyanide...................................................................................15
(p)
treatment processes for removal of toxic materials other than metal or cyanide ............................... 16
(7)
SLLIDGE TREATMENT
(a)
Sludge Digestion Tank - Heated (anaerobic) ...... »..... »_..... »....».... _....... ......... »....... ......... ........ ............... 10
Aerobic................................................................................................._..........................................5
Unheated(anaerobic)...............................................................................................................................3
(b)
Sludge Stabilization (chemical or thermal) ..................................................................................................5
(c)
Sludge Drying Beds - Gravhy......................................................................................................................2
VacuumAssisted.............................................................................................. 5 ........................................
(d)
Sludge Elutriation.....................................................................................................................................5
(a)
Sludge Conditioner (chemical or thermal) ........ ................... »... _...................... ............... ......... _................... 5
(1)
Sludge Thickener (gravity).........................................................................................................................5
(0)
Dissolved Air Flotation Unh (rot applicable to a unh rated as(3)(i)).................................... _....................... 8
(h)
Sludge Gas Utilization (Including gas storage) ....... _........._......... _......... _.._..... _........ _......... _...................2
(1)
Sludge Holding Tank - Aerated ........... .......................... ....._..».... ................................................................
Non -aerated .............................. ... .......................................................................................................... 2
(J)
Sludge Incinerator (not Including activated carbon regeneration)................................................................10
(k)
Vacuum Filter, Centrifuge, or Filter Press or other similar dewaterinp devices.._»_»__»».»»____»_...__....»...10
(8)
RESIDUALS UTILIZATIOWDISPOSAL (Including incinerated ash)
(a)
Lagoons..................................................................................................................................................2
(b)
Land Application (surlace and subsurface) (see definition 22a)
by contracting to a land application operator or landfill operator who holds the land application permit
orlandfill permit........................................................................................................................................2
(c)
Dedicated Landfill(burial) by the permittee of the wastewater treatment facility..................................5
(9)
Of5riCirlON
(a)
Chlorination.............................................................................................................................................5
(b)
Dechlortnation...........................................................................................................................................5
(c)
Ozone ...... .».».........................................................................................................................................5
(d)
Radiation .......................... ...... ............. .. 5 .................................... ................. .............................................
(10)
CHEMICAL ADDITION SYSTEM(S) ( see definition No. 9) (not applicable to chemical addhions rated as hem (3)(j).
(9a)..(9)(b) or (g)(c) 5 points each:..........................................................5
(5)(a)(4). (6)(a). (6)(b). (7)(b)..
`7" ..
...... ................................................................................................... ..........................
.............................»...................................................................................................... S
(11)
MISCEJ.ANEOIiS UNfWROCESSFS
(a)
Holding Ponds, Holding Tanks or Settling Ponds for Organic or Toxic Materials including wastes from mining
operations containing nitrogen or phosphorus compounds in amounts significantly greater than is common for domestic wastewater. ..........................................
(b)
Effluent Flow Equalization (not applicable to storage basins which are Inherent In land application systems)-9),
(c)
Stage Discharge (not applicable to storage basins Inherent in land application
(d)
Pumps ................................................ ................ ........................................ .................... .................. .3
(e)
(f )
Stand -By Power Supply ................. ...................................... »................................................................. ..
Thermal Pollution Control Device ................. ...........»....................................,, ..
TOTALPOINTS 3
........................ ............. .................... ..............
CLASSFICATICN
Class!.................................................. ............................................... ......... 5-25 Points
. Points
asst .................
................................. ............................................... ..61.661-65 Points
class IV .................... .................................................................................. 66-Up Points
FacUhies having a rating of one through four points. Inclusive, do not require a certilied operator.
Facilities having an activated sludge process will be assigned a minimum classification of Class IL
Facilities having treatment processes for the removal of metal or cyanide will be assigned a minimum ciassfflcatlon of Class 11.
Facilities having treatment processes for the biological removal of phosphorus will be assigned a minimum classification of Class III.
.0004 DEFINITIONS
The following definhions shall apply throughout this Subchapter.
(1) Activated Carbon Beds. A physloaVchemical method for reducing soluble organic material from wastewater effluent; The column -type beds used In this
method MITI have a flow rate varying from two to eight gallons per minute per square foot and may be shher upflow or downfiow carbon beds. Carbon may or
may not be regenerated on the wastewater treatment plant she;
(2) Aerated Lagoons. A basin In which all solids are maintained In suspension and by which blological oxidation or organic matter Is reduced through artificlally
accelerated transfer of oxygen on a flow -through basis;
(3) Aeration. A process of bringing about Intimate contact between air or high purity oxygen In a i€quld by spraying, aghation or dittusion;(3a) Extended
Aeration. An activated sludge process utilizing a minimum hydraulic detention time of 18 hours.
(4) Agriculturally managed site. Any she on which a crop Is produced. managed, and harvested (Crop Includes grasses. grains. trees, etc.);
(5) Alr Stripping. A process by which the ammonium ion Is first convened to dissolved ammonia (pH adjustment) with the ammonla then released to the
atmosphere by physical means; or other almiiar processes which remove petroleum products such as benzene, toluene, and xylene;
(6) Carbon Regeneration. The regeneration of exhausted carbon by the use of a furnace to provide extremely high temporaturos which volatilize and oxidize the
absorbed impurities;
(7) Carbonaceous Stage. A stage of wastewater treatment designed to•achleve "secondary effluent Umfts;
(8) Centrifuge. A mechanical device In which centrtfugal force is used to separate solids from riquids or to separate squids of different dent as;
(9) Chemical Addhlon Systems- The addition of chemlcal(s) to wastewater at an application point for purposes of Improving solids removal, pH adjustment.
7kailnlly control, etc.; the capability to experiment with different chemicals and ditferent application points to achieve a specific result will be considered one
stem; the capability to add chemiral(s) to dual units will be rated as one system; capabilty to add a chemical at a different application points for different
jrPoses will result In the systems being rated as separate systems;
(10) Chemical Sludge Conditioning. The addhion of a chemical compound such as Ume, ionic chloride, or a polymer to wet sludge to coalesce the mass prior to
hs application to a dewatering device;
(11) Closed Cycle Systems. Use of holding ponds or holding tanks for containment of wastewater containing inorganto, non -toxic materials from sand, gravel,
crushed stone or other similar operations. Such systems shall Carty a maximum of two points regardless of pumping facilities or any other appurtenances;
(12) Combined Removal of Carbonaceous BOD and Nitrogenous Removal by Nltrificalion- A single stage system required to achieve permit effluent limits on BOD
and ammonia nitrogen within the same biological reactor,
(13) Dechlortnatlom The partial or complete reduction of residual chlorine In a liquid by any chemical or physical process;
(14) Denhrdication Process. The conversion of nitrate -nitrogen to nitrogen gas;