WQ0000798_Final Permit_19940317

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
March 17, 1994
The Honorable Sarah L. Tripp, Mayor
Town of Shallotte
Post Office Box 27
Shallotte, North Carolina 28459
"4 40
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�EHNR
Subject: Permit No. WQ0000798
Town of Shallotte
Wastewater Treatment and
Spray Irrigation Facility
Brunswick County
Dear Mayor Tripp:
In accordance with your application received February 27, 1992, we are forwarding herewith
Permit No. WQ0000798 dated March 17, 1994, to Town of Shallotte for the continued operation of the
subject wastewater treatment and spray irrigation disposal system. Please note this permit contains
conditions that require upstream and downstream monitoring, in response to concerns of wastewater
runoff effecting downstream shellfish areas. Based on inspections of the treatment and spray facilities the
Division has concerns about spray site maintenance and the soil's ability to adsorb wastewater in specific
spray areas. This permit contains conditions to help determine the Town of Shallotte's compliance with
this permit and State laws and regulations.
This permit shall be effective from the date of issuance until February 28, 1999, shall void Permit
No. WQ0000798 issued February 7, 1989 and shall be subject to the conditions and limitations as
specified therein. Please pay particular attention to the monitoring requirements in this permit. Failure to
establish an adequate system for collecting and maintaining the required operational information will result
in future compliance problems.
If any parts, requirements, or limitations contained in this permit are unacceptable, you have the
right to request an adjudicatory hearing upon written request within 30 days following receipt of this
permit. This request must be in the form of a written petition, conforming to Chapter 150B of North
Carolina General Statutes, and filed with the Office of Administrative Hearings, P.Q. 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. John Seymour at
[phone].
cc: Brunswick County Health Department
Wilmington Regional Office, Water Quality
Wilmington 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. Pres o 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
Town of 5hallotte
Brunswick County
I CC Iwo i 1
continued operation of a 206,100 GPD wastewater treatment spray irrigation disposal facility consisting of
an ultrasonic influent flow measurement device, stair step type cascade influent paths to dual 2 3/4 acre
facultative lagoons with reserve storage capacity, two (2) manually cleaned coarse screens, one (1)
manually cleaned fine mesh screen, chlorine chemical fee system, a mechanical float type effluent flow
measurement device, dual 400 GPM effluent irrigation pumps, approximately 33.6 acres of spray
irrigation fields utilizing pine forest with understory vegetation for nutrient uptake, and all associated
piping, controls, valves, and appurtenances to serve the Town of Shallotte with no discharge of wastes to
the surface waters, pursuant to the application received February 27, 1992, and in conformity with the
project plan, specifications, and other supporting data subsequently filed and approved by the Department
of Environment, Health and Natural Resources and considered a part of this permit.
This permit shall be effective from the date of issuance until February 28, 1999, shall void Permit
No. WQ0000798 issued February 7, 1989 and shall be subject to the following specified conditions and
limitations:
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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 absorb the wastewater, the Permittee shall take such immediate
corrective action to correct the problem, including actions as may be required by the
Division of Environmental Management.
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 sludge generated from these treatment facilities must be disposed of in accordance with
General Statute 143-215.1 and in a manner approved by the North Carolina Division of
Environmental Management.

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 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,
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.
6. The Town shall perform spray irrigation activities per the instructions defined within the
operation and maintenance manual provided by the consultant.
MME!' :: !► u s ►IIIIIIIIqIIIIIIIIIIIIII:;►; t ! u ►
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 over the spray fields shall be maintained.
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.
2

7. The average annual weekly application rate shall not exceed:
2.25 inches/acre/week for Beameade soils
2.75 inches/acre/week for Kureb soils
0.75 inches/acre/week for Leon soils
1.25 inches/acre/week for Leon variant soils
8. No type of wastewater other than that from Town of Shallotte 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.
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.
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 monthly for the following parameters:
BOD5 TSS
Fecal Coliform NH3 as N
TKN NO2/NO3
PAN
The effluent from the subject facilities shall be monitored by the Permittee at the point prior
to irrigation every day for the following parameters:
Flow pH
residual chlorine
3

4. Upstream and downstream monitoring shall be performed on a monthly basis for:
pH
fecal chloroform
T.N
The upstream monitoring points shall be located at accessible points on Stinking Well
Branch and Charles Branch. The downstream monitoring location should be immediately
below the confluence of Charles Branch and Sdnldng Well Branch. Reporting of the
collected data shall be reported as indicated in condition IHA above.
5. Three copies of all operation and disposal records (as specified in condition M 2) and all
monitoring data (as specified in condition III 3 and condition III 4) and any other data as
may be required shall be submitted on or before the last day of the following month to the
following address:
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 Wilmington Regional Office, telephone no.
[phone] as soon as possible, but in no case more than 24 hours or on the next
working day following the occurrence or first knowledge of the occurrence of any of the
following:
a. Any occurrence at the wastewater treatment facility which results in the treatment of
significant amounts of wastes which are abnormal in quantity or characteristic, such as
the dumping of the contents of a 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 render the facility
incapable of adequate wastewater treatment such as mechanical or electrical failures of
pumps, aerators, compressors, etc.
c. Any failure of a pumping station, sewer line, or treatment facility resulting in a by-pass
directly to receiving waters without treatment of all or any portion of the influent to
such station or facility.
d. Any time that self-monitoring information indicates that the facility 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.
4

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1. The six (6) monitor wells shall continue to be sampled every March, July, and November
for the following parameters:
NO3 TDS
TOC pH
Ammonia Nitrogen Chloride
Water Level Fecal Coliforms
Orthophosphate Total Suspended Solids
NO2
Volatile Organic Compounds - In November only (by Method 1 or Method 2 below)
Method 1: Method 6230D (Capillary - Column), "Standard Methods for the
Examination of Water and Wastewater", 17th edition, 1989
Method 2: Method 502.2 "Methods for the Determination of Organic Compounds in
Drinking Water", United States Environmental Protection Agency - 600/4-
88/039
The measurement of water level must be made prior to sampling for the remaining
parameters.
The measuring points (top of well casing) of all monitoring wells shall be surveyed to
provide relative elevations of the measuring point for each of the monitoring wells. These
elevations shall be provided the Regional Hydrogeologist within 60 days after well
construction. The depth of water in each well shall be measured from the surveyed point
on the top of the casing.
If TOC concentrations greater than 10 mg/1 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.
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 analysis specified in the monitoring requirements,
including 604 and 611 if required, must be submitted simultaneously.
The results of the sampling and analysis shall be sent to the N.C. Division of
Environmental Management on Form GW -59 (Compliance Monitoring Report Form) every
April, August, and December.
2. The Compliance Boundmr ! delineated on the attached site plan for the disposal system is
specified by regulations in 15 NCAC 2L, Classifications and Water Quality Standards
applicable to the groundwater of North Carolina. An exceedance of Groundwater Quality
Standards beyond the Compliance Boundary is subject to penalty provisions applicable
under General Statute 143-215.6A. The sale of property, by the Permittee, which is within
or contiguous to the disposal system site may alter location of the Compliance Boundary.
For facilities permitted on or after December 30, 1983, the Compliance Boundary is
established at the lesser of 250 feet from the Lagoons and spray field, or 50 feet within the
property boundary.
5

If the title to any property which may affect the location of the Compliance Boundary is
changed, the permittee shall notify the Division Director within 14 days. The Director shall
then establish a modified Compliance Boundary which will be done as a modification to the
Permit.
The REVIEW BOUNDARY delineated on the attached site map for the disposal system is
specified by regulations in 15 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. When the
concentration of any substance equals or exceeds the maximum allowable concentration of
that substance at the REVIEW BOUNDARY, as determined by monitoring, the permittee
shall either (i) demonstrate, through predictive calculations or modeling, that natural site
conditions, facility design and operational controls will prevent a violation of standards at
the Compliance Boundary; or, (ii) submit a plan for the alteration of existing site
conditions, facility design or operational controls that will prevent a violation of standards
at the Compliance Boundary, and implement that plan upon its approval by the Director.
3. Any additional groundwater quality monitoring, as deemed necessary by the Division, shall
be provided.
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 authorizer) 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 leachate.
1. This permit shall become voidable unless the facilities are constructed in accordance with
the conditions of this permit, the approved plans, specifications, and other supporting data.
2. This permit is effective only with respect to the nature and volume of wastes described in
the application and other supporting data.

3. 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 143-215.6A to 143-215.6C.
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 trust 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
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).
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.
9. The Town shall conduct a thorough evaluation of the original (Southwestern most)
irrigation tract to determine an accurate design loading rate during the period of July 1,
1994, through December 31, 1994. The results of the evaluation must be provided to the
Division on or before March 1, 1995.
Should the results of the evaluation required in the above condition indicate the design
loading rate is such that the plant capacity will be less than 0.2061 MGD, the Town shall
submit plans to upgrade/expand the facility to it's permitted capacity on or before
September 1, 1995.
Should the Town elect not to upgrade/expand the facility, the Town shall request Water
Quality Permit No. WQ0000798 be amended to reflect the reduced design flow on or
before May 1, 1995.
Permit issued this the 17th day of March, 1994
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
6 ajZL, `'' . 4
A. Preston H ard, Jr., P.E., ector
Division of E ' onmental Management
By Authority of the Environmental Management Commission
Permit Number WQ0000798
7

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TOWN OF SHALLOTTE
NONDISCHARGE PERMIT NO. WQ0000798
QUAD SHEET: SEALLOTTE, N.C.
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RATING SCALE FOR CLASSIFICATION OF FACILITIES
Name of Plant
Owner or Conti
Mailing Addres
County: �,-uA S cv�74 Telephone: --/ c 5—
NPDES Permit No. NCOO Nondisc. Per. No.4v C"CICO 7fb
IssueDate:_— G —Expiration Date: G
Existing Facility New Facility
Rated By:..l/PST - _ Date:_. % z���
Reviewed (Train. & Cert.) Reg. Office
Reviewed Train. Cer) Central Office
l
ORC Grade l
Plant Class: (circle one) I II 111 IV Total Points
t"rEM POINTS
(5) SECONDARY TREATMENT UNITS
(a) Carbonaceous Stage
(1)
Industrial Pretreatment Units and/or
MAeration - High Purity Oxygen System .....
20
Industrial Pretreatment Program
Diffused Air System ...........
10
(see definition No. 33)
4
Mechanical Air System (fixed,
(2)
DESIGN FLOW OF PLANT IN GPD
floating or rotor) ..............
8
(not applicable to non -contaminated cooling waters, sludge
Separate Sludge Reaeration .....
3
handling facilities for water purification plants, totally
(ii) Trickling Filter
closed cycle systems (def. No. 11), and facilities
High Rate ...................
7
consisting only of Item (4) (d) or Items (4) (d) and (11)
(d))
Standard Rate ...............
5
D -• 20.000 ..........................
1
Packed Tower..........
5
20,001 - 50,000 ..........................
2
(ill) Biological Aerated Filter or Aerated
50,001 — 100,000 ..... . ....................
3
..........
Biological Filter .........
10
100,001 -- 250,000 ..........................
+
(iv) Aerated Lagoons ..................... .
.
10
250, 001 .. 500.000 ..........................
5
500,001 --1,000,000 ..........................
B
(v) Rotating Biological Contaclors ..........
10
1,000,001 -- 2,000,000 ........................
10
2,000,001 (and up) - rate 1 point additional for each
(vi) Sand Filters -
200,000 gpd capacity up to a
intermittent biological .....
2
maximum of 30
recirculating biological ...
Design Flow (gpd) � r" - . /C <?
(vu S`�ab1zation Lagoons ...................
�,3
V
(3)
PRELIMINARY UNITS (see definition no. 32)
(vu)Cladfier ..............................
5
(a) Bar Screens ................................
1
(1x) Single stage system for combined
or
carbonaceous removal of BOD and
(b) Mechanicat Screens, Static Screens or}
nitrogenous removal by nitrification
Comminuting Devices ................. - .. • •
(see def. No. 12) (Points for this Item
(c) Grit Removal .............................
1
have to be in addition to items (5) (a)
or *I
@ through (5) (a) (viii) .................
B
(d) Mechanical or Aerated Grit Removal ...........
2
(x) Nutrient additions to enhance BOD
(e) Flow Measuring Device .......................
1
camoval .... . , , .......... , .... ....
5
Of
(Q Instrumented Flow Measurement ..............Q�
(xi} Biological Culture ('Super Bugs') addition
to enhance organic compound removal .....
5
(g) Preaeration................................
}
V
(b) Nitrogenous Stage
(i) Aeration - High Purity Oxygen System .....
20
(h) Influent Flow -Equalization ...................
2
Diffused Air System ...........
10
(} Grease or Oil Separators - Gravity ..........
2
Mechanical Air System (fixed,
Mechanical ..• ........
3
floating, or rotor) ...... ......
a
Dissolved AirFlotation,
8
Separate Sludge Reaeration .....
3
Q Prachiorinalion ..............................
5
(ii) Trickling Filter -
High Rate ..............
7
(4)
PRIMARY TREATMENT UNITS
Standard Rate ............
5
(a) Septic Tank (see definition no. 43) ..............
2
Packed Tower ............
5
(b) Imhoff Tank ..................................
5
(iii) Biological Aerated Filter or Aeraled
...... . .. . .
(c) Primary Clarifiers .. .. ... . ...... ...
5
Biological Filler .........................
a C
10
d Settling Ponds or Settling Tanks for Inorganic
() ng g
Civ) Rotating Biological Contaclors ............
10
Non-toxic Materials (sludge handling facilities
(v) Sand Filter -
for water purification plants. sand, gravel.
intermittent biological ........
2
stone, and other mining operations except
recirculating biological ........
3
recreational activities such as gem or gold
(vi) clarifier .......-......... .............
5
mining)......................................
2

(6) TERTIARY OR ADVANCED TREATMENT UNIT
(10) -CHEMICAL ADDITION SYSTEM (S) (See definition No. 91
(a) Activated Cartons Beds -
5
(not applicable to chemical additions rated as item
without carbon regeneration ..................
Is
(3) 6). (5) (a) (xi), (6) (a), (6) (b), (7) (b). (7) (e),
%with carbon regeneration ....................
(D) Powdered or Granular Activated Carbon Feed -
(9) (a). (9) (b), or (9) (c) 5 points each: List:
without carbon regeneration ................. 5
5
'
5
with carbon regtneralion ........ I ....... 15
(c) Air Stripping................................. 5
..... 5
(d) Denitrification Process (separate process) ..... 10
(e) Electrodialysis ........ ..................... 5
(11) irt1SCELLANEOUS UNETS
(� Foam Separation .............................
(a) Holding Ponds, }Molding Tanks or Settling Ponds
(g) Ion Exchange................................ 5
(or Organic or Toxic Materials including wastes
(h) Land Application of Treated Effluent
from mining operations containing nitrogen and/or
(see definition no. 22b) (not applicable for
phosphorous compounds in amounts significantly
sand, gravel, stone and other similar mining
greater than is common lot domestic wastewater 4
operations)
(i) on agriculturally managed sites (See del,
No. 4)...................................(c)
(b) Effluent Flow Equalization (not applicable to storage
basins which are inherent in land application systems). 2
Stage Discharge (not applicable to storage basins
(ii) by high rale infiltration on non-agricuhurall1
inherent in land application systems.,. „_..._._.._ „,»- .„..., 5
managed sites (includes rotary distributors
fixed nozzle systems) 4
(d) Pumps.
and similar ...........
(e) Stall-By Power Supply..
(Iii) by subsurface disposal (includes low pressure
(f) Thermal Pollution Control Device.. _ _. __... 3
pipe systems and gravity systems except at
plants consisting of septic tank and nitrifica-
tion lines only) ............................. 4
TOTAL P01NTS
(ij Microscreens.................................. 5
(j) Phosphorus Removal by Biological Processes
CLASSIFICATION
(See def. No. 26) ............................ 20
(k) Polishing Ponds - withoul aeration ....... 2
Class 1 5 - 25 Points
with aeration .......... 5
Class II. 26- 50 Points
(E) Post Aeration - cascade .............. 0
Ciass III 51- 65 Points
dffused or mechanical ... 5
Class IV. 66- Up Points
(m) Reverse Osmosis ............................... 5
'n) Sand or Mixed-Media Rdlers - low rate ........... 2
Facilities having a rating of one through four points, inclusive,
high rate .......... 5
do not require a certified operator. Classification of all other
Treatment processes for removal of metal or
facilities requires a comparable grade operator In responsible
cyanide.................................... 15
charge.
(p) Treatment processes for removal of toxic
materiats other Than metal or cyanide ......... 15
Facilities having an activated sludge process will be assigned
a minimum classification of Class ll.
SLUDGE TREATMENT
Facilities having treatment processes for the removal of metal
(a) Sludge Digestion Tank - Heated ...............
10 or cyanide will be assigned a minimum classification of Class It.
Aerobic ..............
5
Unheated.............
3 Facilities having treatment processes for the biological removal
(b) Sludge Stabilization (chemical or thermal) .......
5 of phosphorus will be assigned a minimum classification of Class
(e) Sludge Drying Beds - Gravity.... ...........
2 Ill.
Vacuum Assisted .......
5
(d) Sludge Elu:riation .............................
5 In-plant processes and related control equipment which are an
(e) Sludge Conditioner (chemical or thermal) ........
5 integral part of Industrial production shall not be considered waste
(r) Sludge Thidener(gravity)......................
5 treatment. Likewise, discharges of wastewater from residences
(g) Dissolved Air Flotation Unit
having a design flow of 1,000 gpd or less, shall not be subject to
(not appticabte to a unit rales as (3) n .........
B rating.
(h) Sludge Gas Utilization (including gas storage) ....
2
(i) Studge (Molding Tank- Aerated................
5 AptTIONAL COMMENTS.,
Non-aeraled ..... .... .
2
(j) Sludge tncineralor - (not including activated
carbon regeneration) .....
10
(k) Vacuum Filter, Centrifuge or Filter Press or other
similar dewatering devices ....................
10
3) SLUDGE DISPOSAL (including incinerated ash)
(a)Lagoons......................................
2
(b) Land Application (surface and subsurface)
(see definition 22a)
-where the facZily holds the land app. permit ...
10
-by contracting to a land applicalion operator who
holds the land application permit ................
2
-land application of sludge by a contractor who does
not hold the permit lot the wastewater treatment
facility where the sludge is generated .........
10
(c) Landfilied (burial) ............................
5
} DISINFECTION
(a) Chlorination .............................
(b) Dechlorination ........................
5
(c) Ozone ..............................
5
(d) Radiation ...............
`