WQ0001868_Final Permit_19940809

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
August 9, 1994
Mr. M.E. Lassiter
Town of Severn
P.O. Box 401
Severn, NC 27877
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Subject: Permit No. WQ0001868
Wastewater Spray Irrigation
Northampton County
Dear Mr. Lassiter:
In accordance with your renewal request received May 11, 1994, we are forwarding herewith
Permit No. WQ0001868, dated August 9, 1994, to the Town of Severn for the continued operation of the
subject wastewater treatment and spray irrigation facilities. The permit has been amended per
recommendation by the Raleigh Regional Office to remove the previous requirement for disinfection
facilities to be included. Please be advised of condition II.10, however, which states that the disinfection
facilities must be reactivated if the possibility of human contact with the wastewater arises.
The Training and Certification Unit of the Division will classify the spray irrigation facilities
permitted by the Division. Prior to that time, a spray irrigation school will be offered. The permittee must
have a certified spray irrigation operator to operate the subject facility. Accordingly, the permittee should
contact the Training and Certification Unit at [phone] to determine when the next "Spray Irrigation
School" will be offered.
This permit shall be effective from the date of issuance until July 31, 1999, shall void Permit No.
WQ0001868 issued June 29, 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. Ray Cox at (919)
733-5083.
cc: Northampton County Health Department
Raleigh Regional Office, Water Quality
Raleigh Regional Office, Groundwater
Groundwater Section, Jack Floyd
Training and Certification Unit
Facilities Assessment Unit
P.O. Box 29535, Raleigh, North Carolina 27626-0535
An Equal Opportunity Affirmative Action Employer
Sincerely,
A. Prest Howard Jr.,P.E.
Telephone [phone] FAX [phone]
50% recycled/ 10% post -consumer paper

NORTH CAROLINA
ENVIRONMENTAL MANAGEMENT COMMISSION
DEPARTMENT OF ENVIRONMENT, HEALTH AND NATURAL RESOURCES
RALEIGH
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
The Town of Severn
Northampton County
FOR THE
continued operation of a 0.062 MGD spray irrigation treatment and disposal facility consisting of an
influent pump station with dual 80 GPM pumps, high water alarm, a storage lagoon with 35-day storage at
design flow, dual 320 GPM irrigation pumps, approximately 10,300 linear feet of irrigation piping and
sprayers and approximately 13.7 acres of wetted spray irrigation area to serve the Town of Severn with no
discharge of wastes to the surface waters, pursuant to the renewal request received May 11, 1994, and in
conformity with the project plan, specifications, and other supporting data subsequently filed and
approved by the Department of Environment, Health and Natural Resources and considered a part of this
permit.
This permit shall be effective from the date of issuance until July 31, 1999, shall void Permit No.
WQ0001868 issued December 4, 1990, and shall be subject to the following specified conditions and
limitations:
I. PERFORMANCE STANDARDS
1. 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
Environmental Management, 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
Environmental Management.
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,
d) 100 feet between wetted area and drainage ways or surface water bodies,
e) 50 feet between wetted area and public right of ways,
f) 100 feet between wastewater treatment units and 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.
II. 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 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.
3. A suitable vegetative cover shall be maintained. In the event the existing cover crop,
including trees, appears to be stressed or damaged as a result of the operation of the
wastewater system, the permittee should take immediate action to assess the nature of the
problem and take appropriate corrective action.
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.
b. 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 application rate shall not exceed 46.8 inches per acre per year not to exceed an average
weekly application rate of 0.90 inches/acre.
No type of wastewater other than that from the Town of Severn shall be sprayed onto the
irrigation area.
9. No traffic or equipment shall be allowed on the disposal area except while installation
occurs or while normal maintenance is being performed.
2

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. If, at any time, the possibility of human contact with the wastewater arises, the
disinfection facilities shall be immediately reactivated
11. Freeboard in the storage lagoon shall not be less than 1.5 feet at any time.
III. MONITORING AND REPORTING REQUIREMENTS
1. Any monitoring (including groundwater, surface water, soil or plant tissue analyses)
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.
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 April, August and November (if irrigation occurs during the calendar
month) for the following parameters:
BOD5 TSS
Total Coliform pH
NH3-N Sodium
Magnesium Calcium
Sodium Adsorption Ratio by Calculation
4. A representative annual soils analysis (Standard Soil Fertility Analysis) shall be conducted
of each site receiving residuals in the respective calendar year and the results maintained on
file by the Permittee for a minimum of five years.
The Standard Soil Fertility Analysis shall include, but is not necessarily limited to, the
following parameters:
Acidity Manganese Potassium
Calcium Percent Humic Matter Sodium
Copper pH Zinc
Base Saturation (by calculation) Magnesium Phosphorus
Cation Exchange Capacity
5. Three (3) copies of all operation and disposal records (as specified in condition III 2) on
Form NDAR-I (Non -Discharge Application Report) 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 11I 3) on Form NDMR-1 (Non -Discharge Wastewater Monitoring Report)
shall be submitted on or before the last day of May, September and December. All
information shall be submitted to the following address:
3

NC Division of Environmental Management
Water Quality Section
Facility Assessment Unit
PO Box 29535
Raleigh, NC 27626-0535
6. 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 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 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
Monitor wells MW-1, MW-2 and MW-3 shall be sampled every April, August and
November for the following parameters:
NO3 Ammonia Nitrogen
TDS TOC
pH Water Level
Total Coliforms Fecal Coliforms
Volatile Organic Compounds - In November only (by Method 1 or 2 below)
Method 1: Method 6230D (Capillary - Column), "Standard Methods For The
Examination of Water and Wastewater", 17th ed., 1989
Method 2: Method 502.2 "Methods For The Determination Of Organic Compounds
In Drinking Water", U.S. EPA-600/4-88/039
2. 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.

3. If TOC concentrations greater than 10 mg/l are detected in any downgradient monitoring
well, additional sampling and analysis must be conducted to identify the individual
constituents comprising this TOC concentration. If the TOC concentration as measured in
the background monitor well exceeds 10 mg/l, this concentration will be taken to represent
the naturally occurring TOC concentration. Any exceedances of this naturally occurring
TOC concentration in the downgradient wells shall be subject to the additional sampling
and analysis as described above.
4. If any volatile organic compounds are detected by method 6230D, or the equivalent method
502.2, then EPA methods 604 and 611 must also be run to detect other organic compounds
which may be present. The results of all analyses specified in the monitoring requirements,
including 604 and 611 if required, must be submitted simultaneously.
5. The results of the sampling and anafysis shall be sent to the Groundwater Section, Permits
and Compliance Unit, P.O. Box 29535 Raleigh, N.C. 27626-0535 on Form GW-59
(Compliance Monitoring Report Form] every May, September and December.
6. Any additional groundwater quality monitoring, as deemed necessary by the Division, shall
be provided.
7. 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).
8, 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 permitwe.
V . INSPECTIONS
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 Environmental Management or other permitting authority.
3. 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 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.
5

VI. GENERAL CONDITIONS
This permit shall become voidable unless the facilities are constructed in accordance with
the. conditions of this permit, the approved plans and specifications, and other supporting
data.
2. This permit is effective only with respect to the nature and volume of wastes described in
the application and other supporting data.
3. 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 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 143-215.6(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. Prior to any transfer of this land, a notice shall be given to the new owner that gives full
details of the materials applied at this site.
7. A set of approved plans and specifications for the subject project must be retained by the
Permittee for the life of the project.
8. 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).
9. 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 9th day of August, 1994
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
A. Presto oward, Jr., .E., Director
Division ofEnvirorunental Management
By Authority of the Environmental Management Commission
Permit Number WQ0001868
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RATING SCALE -FOR CLASSIFICATION OF WATER POLLUTION CONTROL SYSTEMS
arne of Facility: Ste' ff�LAJ S P Ptf i ;-11 A -Rot -
Jwner or Contact Person: L�'rSSJTE
Mailing Address: 0.2azC_ 4D i _ Sf'JcP2fi/ Alc Z-7 2 7 7
County: Na 1-1-74l ff-m P ' 1,) Telephone: S - 4-4- 0r ©4l
Present Classification:��_ _. New Facility Existing Facility
NPDES Per, No. NC00 Nondisc. Per. No.WQ01 O If! Health Dept. Per No.
Hated by:. --:Z�f- a=-'EEP Telephone: 5"71- 4iCy Date: 6 6
Reviewed by: Health Dept. Telephone:
Regional Office Telephone:
Central Office Telephone:
ORC: Grade: Telephone:
Check Class ification(s): Subsurf ce Spray Irrigation Land Application
Wastewater Classification: (Circle One) it III 1V Total Points:117
i ��I '�1• �► :. I / �s11it� �• 'u7►! W ��: l► II+.,G �:! � ►i � is iilC•/ !�► !ai ►�
ROPER I
SUBSURFACECLASSIFIC MON
(check ail units [ha( apply)
1. septic tanks
2. pump tanks
siphon or pump -dosing systems
sand fillers
,- grease trap/interceptor
6. oil/water separators
7, gravity subsurface treatment and disposal:
8. pressure subsurface treatment and disposal:
SPRAY 1 RRnAT)CN CLAS51 FICATICN
(check all units that apply)
1. preliminary treatment (definition no. 32 )
2lagoons
3. septic tanks
4-pump tanks
5. pumps
6. sand niters
7. grease trapinterceptor
8. oil/water separators
g. disinfection
10. chemical addition for nutrient/algae control
11.Vspray irrigation cl wastewater
In addition to the above classifications, pretreatment of wastewater In excess of these components .sha[;.
be rated using the point rating system and will require an operator with an appropriate due[ certification
LAND APPLICATION/RESIDUALS CLASSIFICATION (Applies only to permit holder)
1. Land application of biosolids, residuals or contaminated soils on a designated site.
WASTEWATER TrRFATMENT FACILITY CLAS51FiC nON
The following systems shall be assigned a Class I classiticalion, unless the flow is of a significant quantity or the technology is unusually
complex, to require consideration by the Commission on a case -by -care basis: (Check if Appropriate)
1. OH/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 filters, disinfection
and direct discharge;
3- Lagoon Systems consisting only of preliminary treatment, iagoons, 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 cil/water separators, pumps, air -stripping, carbon adsorption, disinfection
and disposal;
6. Aquacullure operations with discharge to surface waters;
Wa!er Plant sludge handling and back -wash water treatment;
Seafood processing consistigng of screening and disposal.
9. Single-family discharging systems, with the exception of Aerobic Treatment Units, will be dassilied if permitted alter July 1,
1990 or if upon inspection by the Division, it is lound [hat the system is not Ming adequately operated or maintained. Such
systems will b-a notified of the classification or reclassification by the Commission, in writ;ng.

The following scale is used for rating wastewater treatment facilities: (circle appropriate points)
rr,EM POINTS '
( 1) Induslrw Pretreatment Units or Industrial Pretreatment "ram (sea deilnhlon No. 33)........................__.........�
(2) DESIGN FLOW
OF PLANT IN gpd (not applicable to non•conlaminalod cooT.ig waters, sludge handing factitth:s
for
water purifimtion
plants, totally closed cycle sysierns(sae definition No. 11). and faciWies consisting only of
ltem
{4)(d) or
Ilems.(4)(d) and (11)(d))
'
0 - 20.000—...................... ............ .............................. .»................... _ ».....,...... ............. _........... 1
20.001 - 50.000...._.._...__..................»..._............................... ................ ... ..._._......»...._.._.»._.........z
r
50,001 - 100.000 ........» ».» »..»...» .... ......... -- �.�............
......... .. »... 3
250.001 - 500,000..... ..................... ...................... _...... -_-... _..............
..... = a
500.001 - 1.D00,0o0..................... .....-..........._..-•---------•---......----•.........._..........._........
1.000.001 - 2,000,000.... ...................................................................................... ......................
....... ...:10
2.000,001 (and up) rate 1 point additional for each 200.000 gpd capacity up to a maximum
of „__._._•,__•_ 30 `.
Design Flow (gpd)
(3) PR' �IMNARY UNFTS/PROCESSfS (see darinhion No.32}
,
(a)
BarScreerz...... ».Y....._...........»_..».._...-..»------------------------- .................... ..... ...._-_..........-...»......_...«.-•-.1•.-
or -
(b)
Mechanical Steens, Static Screens or Comminuting Devices ....... ............... .........-
GrkRemoval...»
(c)
......................................»..............-_.._......._............................._.........._.............»........--1� '
(d)
(a)
or
Mechariical or Aerated Grit Removal _.........— .................................................»..........:_,.........-.......-.........._2•
FbwWaasjdrV Device............... ... -. -.- .-...
g. '-
k
.-
Or
(f)
Instrumented Row Measurement............ --- -------- -^--................. ... _.__........ ............................
xf`-: -
(g)
Preasrallon ....................._............. .+........................ .................... ....................................
_.„.....z;�'. �.
(h)
Influent Flaw Equalization .................. ...... ..................................................................... ............... ............ Z',r",'.,x
I
Grease or oil Separators . Gravh _.__...____•__,_ ,•,
-__, _; ,„ ;•_;
Mechanical.............. ..»�»_» - ��.__ r.._.».......»......»».....».. ...._..
-,:.:3 ,:';
• ())
Dissolved Air
Prechlorinalhan..»......»...»........»__......
..................__-.,.....,._.._......,.........._..........__�_...............5
(4) PRI tARYTREATM31T UN(rS9FDCESSES
z
(a)
Septic Tank (sae definition No. 43).Y_..»»---------------------------- ------ _..._---- -...................................2'.-:; s
(b)
Imholl Tank ......................
(c)
Primary Clarifiers ........ ... ........ _.......... _.-......... _.._................................................................................3
(d)
Souling Ponds cr Settling Tanks for inorganic Nan•laxic Materials (sludge handling facilities for
water fr.:'
purification plans, sand, gravel, sane, and other mining operations except recreational activities such as gam • �' _
E�`'
orgold mining) -------------- .................»..»._........_..--•----.._.___-----.-.__._- 2• -
(5) SECONDARYTREA'iMLrTi 1JnZ,9R0CESSE$
(a) Carbonaceous Stage
}'. ..
U) Aeration•Hlgh Purity Oxygen System ...................... ....... _........
DiffusedAir System ..... _-................................ .........�.»•_.___.......................
20 ,l -
Mechanical Air System (fixed, floating or
Separate Sludge Reaeratlon.........»
(ill) Trickling Filter
High Rate ......... .»....»................
Standard Rate ........... ................. -.......... _.....................................................................5
PackedTower ........................................................................ ......................5 r p,•;."
(iii) Biological Aerated Fifter or Aerated Biological Filter 0:_.
Aerated Lagoons
(iv) .....................-- ... _...... ...............»_......__.....................»..,.»...._70'.I=.A':'.
10
(v) Rotating Biological r
r. •-
(vi) Sand Filters -intermittent biological .......... _._.._.._._......_._.....................»......_...�-..-.2 =;
Recirculating biological-_...- --...»»..»............»_..................-...................
(vif) Stabilization Lagoons ............. -5 ..................-..._.......... .
(viii) Clarifier ............ .............. ........................................................................................... p +
[ix} Single stage sysiom 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 hems-
(5)(a)(i) through (5)(a)(viii),
ufllfzing the extended aeration process (see delinition No.3a) ................. _._.».
utilizing other than the extended aeration process .......... ....................... -......... •--••-g
(x) Nutrient additions 10 onhance BUD removal ................ ...................................
..................
(XI) Biological Culture ('Super Bugs')addhlion.......................................... .........................
(b)
Nitrogenous Stage
Aeratlon High Purcy Oxygen
x,'V
(1) -
Diffused Air System .....................- -- - ...... _....» ._........ __..
.... ._ 1 0_ . r
Mechanical Air System (tined, lloairng or rolorj�_ _.._ _._„ .- •»••••-� B r`
Separate Sludge Reaeration .................... ........ 3 q'
[i]} Trickling Filler -High Rate ............ - ............................... ................................ 7=• '
Standard Rate.........................................................................5
z-
Packed Tower._ ................ �.
Biological Aerated Filler or Aerated Biological Filler.--.----••_.--.---.-•---.---•---•-•10`
_....».....__..._.S': . ,
iv Ralaling, Biological Gantactors.--.--.............................»..»...........__.....--•...-....»--•..•-. '-'-
(v) Sand Filler- frrterminerx bfWogical................................. _.. ...»...... ..». _-.2 .
Recirculating biological.. _...».
.............
NO..................
......5
(5} TERTARYOR
ADVANCED TREATMENT UNITSPRXESSES
(a)
Aczivalad Carbon Beds -
without carbon regeneration- .............
with carbon regeneration ........................ .................................. ... »......................
. _....
(b)
Powdered or GranularActivaled Carbon Feed-
='•�°•
� r
xithout carbon ragoneraliom.................................................... .............
.....................
•.vilh carbon regeneration......__ ................... ...... ..._.........................
.....1
5
.............................................................
^
(d)
Donitrilicatian Process ............... ..•_.10
5
(a)
Eloclrodialysis .................-..................... ............................................. ..... » ..... ...................
.....
s.
(1)
Foam Separation .................... .............................. .......
.5
(0)
ton Exchange ........................................ .......................................
.....
(h)
lard Application of Trealod Effluenl (sob dolinrion No. 7.2b) (nor applicabte for sand, gravel, Mona G
and whor similar mining operations) by high ralo infiltrnlian.........................................................
............
(I)
(1)
Microscroons.............................................................................................................................................
Piusptxrous rlomoval by Biological Procosses (Sao doifnitlon No. 2G).........................................................20 -
2
{It)
Polishing Ponds - wthout aeration ..... ... ...............
.......................
................
_................

................................................ ..........0
Post oration - cascade........... ................. .........._...._............
iflusedor mechanical ........................... ................... ........... ............ ............... ................. .�
j(m)
Reverse Osmosis........................................................ ............. ._...-......--................ I ............................ 5
in
Sand or Mixed -Media Filers - low rate ........... .......... ..... .............................................................
highrate......................................................................5
(a)
Treatment processes for removal of metal or cyanide ...............
(p)
treatment processes for removal of toxic materials other than metal or cyanide .................. __,. ........... _......... 16
I (7)
SLUDGETREATMENT
(a)
Sludge Digestion Tank - Healed (anaerobic) ................ ........................... ............. _.................... ........10
............................................................................................................ . . Aerobic ................ .. ..._5
Unheated (anaerobic)
, '
(b)
-Sludge Stabilization (chemical or thermal) ...... ................. ...................... .......................................... .........._5
(c)
Sludge Drying Beds - Gravity .................... ..............................
Vacuum Assisted ....................................................................................................................... 5
..............................
:
(d)
Sludge Elutriation......................................................................................................... ......5
(a)
Sludge Conditioner (chemical or thermal) ..........................___....................................................................._5
:
(I)
Sludge Thickener (gravity)..................................................................................................................... —
{g J
Dissolved Air Flotation Unit [not applicable to a unit rased as(3)(i))......................... .................................... ft
i
(h)
Sludge Gas Utilization (including gas storage)............................................................. _...............................
(l)
Sludge Holding Tank - Aeraled....................................................................................................................5
Norraerated............................................................................................................................................. 2
{)J
Sludge Incinerator (not including activalod carbon regeneration).:....................................................:.........10
(k)
Vacuum Fltor, Centrifuge, or Flier Press or other similar dawalenng devices .... ................... _..................... _...1 0
(a)
RESIDUALS UTILIZATIONIMSPOSAL (irduding incinerated ash)
(a)
Lagoons .............................................. '............. _............................................................. ...................... 2
(b)
Land Application (surface 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 permillee of the wastewater treatment facility ................... ..... .....................
(9)
DShFECTCN
(a)
Chlorinalion.._............... ...... ....................... -.............. .......... ............................. .................................... 5
(b)
Dechlorinalion.......................................................... ....................................................... .........................5
(c)
O:one............................................................................................................................................. .....S
i(d)
Radiation.................................................................................................................................................5
(10)
CHEMICAL ADDITION SYSTEMS) ( see definition No. 9) (not applicable to chemical additions rated as ham (3)0),
(6)(b), (7)(b), (7)(e), (9a). (9)(b) or (9)(c) S points each:
List...............
..................... ............... ........ ........... ................................... ..................... . S
............................................. .... .... ...I .........._........................................................... 5
....................................................................................I........................._................._..
........................................................................................................................5
(11)
mscalANECUS UNiTWROCESSES
(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
fordomestic waslewater........................................................................................................................—_4
(b)
Effluent Flow Equalization (rot applicable to storage basins which are inherent In farad application sysisms).__ 2
(c)
(d)
Stage Discharge (not applicable to storage basins inherent In land applicallon cystems)................_..._.
Pumps....................................................................................................................................................3
(e)
Stand -By Power Supply............................................................................................................................
(1)
Thermal Pollution Comm] Device ................................... »................................. ........... ....... .............. ._......3
TOTAL POINTS ........... ........... ....................... I ......... _................
CLASSFICATICN
tlass 1.......................................................................................................5.25 Points
CassIl...... .................. ................. ............. ................................ ................. L26-50 Points
Cte=III........................................................................................................51.95 Points
-------------------------------------------------------------
ClawIV ...............................................................................__.......................66-Up Points
Facilities having a rating of one through lour points, inclusive, do not require a certified operator.
Facilities having an adWed sludgy rxass wilt ba assignad a minimum classification of Class II.
Facilities having treatment processes for the removal of metal or cyanids will be assigned a minimum classification of Class II.
Facilities having treatment processes for the biological removal of phosphorus wilt be assigned a minimum classir=tion of Class fit.
.0034 DEFiNiTIONS
The following definitions shall apply throughout this Subchapler.
(1) Activated Carbon Beds. A physical/chemical method for reducing soluble organic material from wastewater erlluent; The coiumn-type beds used in tit::
method will have a flow rate varying from Iwo 10 eight gallons per minute per square foci and may be either upflow or downflow carbon beds. Carbon ma
may not be regenerated on the wastewater treatment plant site;
(2) Aerated Lagoons. A basin in which all solids are mainlained in suspension and by which bioiogical oxidation or organic matter is reduced through ani;',_
accelerated transfer of oxygen on a Ilow-through basis;
(3) Aaratfon. A process of bringing about Intimate contact between air or high purity oxygen in a liquid by spraying, agitation or dillusion;(3a) Exlendec
Aeration. An activated sludge process utilizing a minimum hydraulic detention lima of 18 hours.
(4) Agr'tculturatly managed she. Any site on which a crop is produced, managed, and harveslad (Crop includes grasses, grains, trees, etc.);
(5) Air Stripping, A process by which the ammonium iron is first convened to dissolved ammonia (pH adjustment) with the ammonia then rateased to ttv
atmosphere by physical means; or other similar processes which remove petroleum products such as benzene, toluene, and rylens;
(6) Carbon Regenerallen. The regeneration of exhausted carbon by the use of a furnace to provide extremely high lemperalures whtch volatilize and oxic
absorbed impurities;
(7) Carbonaceous Stage. A slay,"* of wastewater treatment designed 10 achieve ,'secondary' effluent limits;
(a) Centrifuge. A mechanical device in which cantrilugal force is used to separate solids Irom liquids or to separate liquids of dillarenl dens&ias;
(9) Chemical Addition Systems- The addition of ehomieai(s) to wastewater at an application point for purposes of Improving sollds removal, pH adjusime
al''talinity control, Bit:.; the tapabifity 10 experiment with different chemicals and dillererlt application points to achieve a specific result will bo considered or
system; the capability to add chemicai(s) to dual units will be rated as one system; capabiiily to add a chemical at a different application points for diliorr
purposes wilt result in the systems being rated as separate system.,s;
(10) Chemical Sludge Conditioning. The addhion of a chemical compound such as lime, ferric chtorido, or a polymer to wet sludge to =IBsca Iho rrass :
its application to a dswalaring device;
(It) Closed Cycle Systems. Use of holding ponds or holding tanks (or conialnmont of wastewater containing inorganic, non-toxlc materials Irom sans.
crushed stone or other similar operations. Such systems shall carry a naximum of two points regardless ai pumping lacilities or any other appurtenances
(12) Combined Removal of Carbonaceous BOD and Nitrogenous Removal by Nitr6calion- A siNle slago system required to achieve permit allluont ti-nits c
and ammonia nhrogon within Iho same biological reactor,
(73} Dechforinalion, The partial or complain reouclion of residual in a liquid by any chemical or physicat procoss;
00) Doni:rifiC,160n Process. the ronvorsion of nitrate -nitrogen to nuogon gas;

IIS) Eieclroddalysls. Process for ramoving Ionized salts from water through the use of ion:salaciive ]an -exchange membranes;
(t5) Fillor Press. A process operated mechanically for parlIelly dewatering sludge;
(17) Foam Separation. The planned frothing of wastewater or wastewater effluent as a means of removing excessive amounls of dalergonl materials through
the Introduction of air In the form of tine bubbles; also called loam (ractionation;
(15) Grit Removal- The process of removing grit and other heavy mineral matter from wastewater;
(T9) fmhofl Tank A deep two story wastewater lank consisting of an upper sadlmentation chamber and a lower sludge digosilon chamber.
(20) lnsirumanted Flow Measurement. A device which Indicates and records rate of flow;
(21) ion Exchange. A chemical process in which Ions from two diKorenl molecules are exchanged;
(22) Land application;
(a) Sludge Disposal. A final sludge disposal method by which wet sludge may be applied to land either by spraying on the surface or by subsurface injection
C.a., chisaf plow); (not applicable for types of sludge described In (11) of this Rule);
(b) Treated wflluert. The process of sprayin5 treated wastewater Dnio a land area or other methods of application or wastewater crr.o a Sand area as a
rears of linai disposal or irealmerd;
(23) Microscreen. A low speed, continuously back -washed, rotating drum lifter operating under gravity conditions as a polishing method for removing
suspended solids from ettluanc;
(24) Nitrification Process. The biochemical conversion of unoxidizod nilrogen (ammonia and organic nilrogen) to oxidized nitrogen (usually nitrala):
(25) Nitrogenous Stage. A separate stage of wastewater treatment designed for the specific purpose of convening ammonia nitrogen to nitrate nitrogen;
(26) Phosphate Removal, B ological. The removal of phosphorus lmm wastewater by an cxicianoxic process designed to enhance luxury uptake of phosphorus
by the microorganisms;
(27) Polishing Pond. A holding pond following secondary treatment with sufficient detention time to allow settling of finely suspended solids;
(20) Post Aeraliont, Aeration following convaritional secondary treatment units to increase effluent D.O. or for any other purpose;
(29) Post Aeration. (Cascade) A polishing method by which dissolved oxygen is added to the effluent by a nonmechanical, gravity means of flowing down a
series of steps or weirs; The ilow occurr ng across the stags or weirs moves in a fairly thin layer and the operation of iho cascade requires no operator
adtustment; thus, zero points are assigned even though this is an essential slop to meeting the limits of The discharge pemil;
(3a) Powdered to Granular Activated Carbon Feed. A biophysical carbon process ftu utilizes biological activity and organic absorpllon by using powdered or
granular activated carbon; Virgin or negenerated carbon is lead controlled into the system;
(31) Preaarall" A tank constructed to provide aeralicn prior to primary treatment;
(32) Preliminary Urits. Unit operations In the trealmarr, process, such as screening and comminution, that prepare the liquor for subsequent major operations;
(33) Industrial Pretreatment.
(a) Pre-treatmanl Unit, Induslrial, The conditioning of a waste at ils source before discharge, to reprove or to neutralize substances injurious to sewers and
treatment processes or to effect a partial reduction In load on Ilse treatment process which is operated by the same governing body as the wastewater
treatment plant being ralod;
b) Pre-lrealment Program, Industrial - must be a Stale or EPA required program to receive points on the rating sheet;
(34) Primary Clarifiers. The Tirst sanli-ig tanks through which wastewater is passed In a treatment worts for the purpose of removing sar laaWe and suspended
solids and BOO which is associated weh the solids;
(35)-Pumps. All influent, affluent and in -plant pumps;
(36) Radiation. Disinlection or sterilization process u6fizing devices omining uhraviolat or gamma rays;
(37) Reverse Osmosis. A lreatmerrt process In which a heavy contaminated liquid is pressurized through a membrane forming nearly pure liquid free from
suspended solids;
(38) Rolaling Biological Contractors. A fixed biological growth process In which wastewater flows through tanks In which a series of partially submorged circular
surfaces are rotated;
(39) Sand Fillers:
(a) Intermitiont Biological- Fihralfon of effluent following septic tanks, lagoons, or some other treatment process In which further biodaccmposaion is
expected to produce desired eflluenls; Hydraulic loading rates on these filters are computed In gpdrac and have a resulting law Vm/sl (less than one);
b) Recirculating biological! - the same type of sand filter as defined in Subparagraph (39) (a) of this Rule with the added capability to recycle effluent back
through the sand filler,
(40) Sand or Mixed -Media Fitters, A polishing process by which effluent limits are achieved through a lurhar reduction of suspended solids;
(a) low rate — gravity, hydraulically loaded lilter with loading rates in the One to three gpnYsl range;
(b) high rate — a pressure, hydraulically loaded lifter wnh loading rates in the five gpr-Vsl range: At any rate, the loading rate will exceed three gpmisl;
(41) Secondary Clarifiers. A tank which follows the biological unit of treatment plant and which has the purpose cif removing sludges associated with the
biological treatment units;
(42) Separate Sludge Reaeralion. A part of the contact stabilization process where the activated sludge Is trtnslerred to a tank and aerated before resuming It
to the contact basin;
(43) Septic Tank A single -story settling lank in which senled sludge is in contact with the wastewater Ilowing through the lank; shall not be applicable for
septic lank syslems serving single family residences having capacity of 2 000 gallons or less which discharge io a nitrification field;
(44) Sludge Digaslioru The process by which organic or volatile mailer and sludge is gasified, liquefied, mineralized or converted into more stable organic mailer
through the activity of living organisms, which Includes aerated holding tanks;
(45) Sluciga Drying Beds. An area comprising natural or art iicial layers of porous malerials upon which digested sewage sludge Is dried by drainage and
evaporation;
(46) Sludge Eluirialion- A process of sludge conditioning in which certain constituents are removed by successive washings with fresh water or plan! effluent;
(47) Sludge Gas Ulilizalion. The process of using sawage gas for the purpose of healing buildings, driving anginas, eic.;
(4E) Sludge Hofdng Tank (Aerated and Nonaeraled). A tank LiCIizod for smelt wastewater Ireatment plants not containing a dlgmar In which sludge may be
kept fresh, and supernatant withdrawn prior to a drying method (La- sludge drying beds); This may be done by adding a small amount of air simply to keep the
sludge fresh, but not necessarily an amount that would be required to achieve slabifization or organic matter. A nonaeralad tank xvuld simply be used to
decant sludge prior to devvatering and would not allow long periods (several days of detention) without resulting odor problems;
(49) Sludge lncinerafors. A furnace designed to burn sludge and to remcre all moisture and combusible materials and reduce the sludge to a sterile ash;
(50) Sludge Stabilization (Chemical or Thermal). A process to make trailed sludge less odorous and putrescible, and to reduce the pathogenic organism
content; This may bit done by pH adjustment, chlorine dosing, or by heal treatment;
(51) Sludge Thickener. A type of sedimentation lank In which the sludge is permilled to settle and thicken through agitalion and gravity;
(52) Stabilization Lagoon. A type of oxidation lagoon in which biological oxidation of organic matter Is effected by natural transfer of oxygen to the water from
air (not a polishing pond);
(53) Stand -By Power Supply. On site or portable electrical generating equipment;
(53) Slalic Screens. A stationary screen designed to rarrrove solids, including non-biodagradable paniculale (licalabla solids, suspended solids and BOO
reduction) from municipal' and industrial wastewater iraafmant systems;
(55) Tertiary Treatment, A stage of treatment loilowing secondary which is primarily for the purpose of o luenl polishing; A settling lagoon or sand or coal filler
night be employed for this purpose;
(56) Thermo[ Pollution Control Osvice. A device providing for the transfer of heal Imm a fluid flowing in tubes to another fluid outsiCa the tubes, or vice versa;
or other means of regulating liquid temperatures;
(57) Thermal Sludge Conditioner. A conditioning process by which heat is added for a prciracted period of lime to improve the dewworabitily of sludge by the
solubilizing and hydraulizing of the smaller and more highly hydrated sludge particles;
(50) Toxic Materials. Those wastes or combinations of wastes, Including disease -causing agents which after dscharga and upon exposure, Ingestlen, Inhalation
or assimilation into any organism, either dlroctly from the environment or indirectly by ingestion through food chains, will cause dealh, disaasa, behavioral
abnormalities, cancer, genetic mutations. physiological malluncilons (including mallun_lions in reproduction) or physical deformations. in such organisms or thair
offspring; Toxic materials include, by way of Illustration and not limitation; lead, cadmium, chromium, mercury, vanadium, atsanic, zinc, onho- nit ro-chlorobenzene
(ONCS), pofychlerinaied bphonyls (PCBs) and dichlorodipNnyi Irichlorcethane (DDT)-, and any other materials that have or may hereafler be Calarmined to have
toxic proporlies;
(59) Tiicklirng Fitter, A biological treatment unit consisting of a malarial such as broken stone or rock over which wastewater is distributed; A high rasa Iricwing
fifer is one which operated at between 10 and 30 mgd per acro. A low rate trickling fitter is one which is designed to operate of one to Ieur ngd per acre;
(60) Trickling Filar (Packed Tower). A plug flow iypa of oFaraiio:t in which wastewaier flows down through successive layers of rgdiia or filtrate malarial; Organic
material is removed comirivally by the active biological fixed growth in each successive layer- Thfs method may produce 'socondary' quality olltuant, or may bu
adapted to produco a nitrified affluont;
(at) Vacuum Fil:or, Conlrifugos. or Filter Prussas. Devices which are dssi_:t;d So rerneva excess water from eiihor divaslad or urn7;-,-3slod stucigo prior to disposal
or funhor treatment.