WQ0000795_Final Permit_19930924

Mate 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
Dean A. Wise, Director of Public Utilities
Town of Surf City
Post Office Box 2475
Surf City, North Carolina 28445
Dear Mr. Wise:
September 24, 1993
Subject: Permit No. WQ0000795
Town of Surf City
Sewer Collection System and
Wastewater Spray Irrigation Facility
Pender County
In accordance with your application received August 2, 1993, we are forwarding herewith Permit
No. WQ0000795, dated September 24, 1993, to the Town of Surf City for the continued operation of the
subject wastewater collection system and wastewater treatment and disposal facility.
This permit shall be effective from the date of issuance until July 31, 1998, shall void Permit No.
WQ0000795 issued March 29, 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 to you, you have
the right to request an adjudicatory hearing upon written request within 30 days following receipt of this
permit. This request must be in the form of a written petition, conforming to Chapter 150B of North
Carolina General Statutes, and filed with the Office of Administrative Hearings, P.O. Drawer 27447,
Raleigh, NC 27611-7447. Unless such demands are made this permit shall be final and binding.
If you need additional information concerning this matter, please contact Mr. Michael D. Allen at (919)
733-5083.
cc: Pender 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. Preston 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 GRAN'T'ED TO
Town of Surf City
Pender County
FOR THE
continued operation of a 0.600 MGD wastewater treatment disposal facility consisting of two (2) grit
removal chambers, a flow splitter box, a barscreen/comminutor unit, three (3) aerated lagoons in series
(total volume of approximately 19 million gallons), a gaseous chlorinator, a chlorine contact chamber, two
(2) effluent storage ponds (total volume of approximately 4.7 million gallons) and approximately 88.5
acres of spray irrigation fields and the continued operation of a wastewater collection system consisting of
twenty-one (21) pump stations (two [2] 150 GPM, five [5} 100 GPM, one [1] 85 GPM, four [4] 75 GPM
and nine [9] 50 GPM) each with dual submersible pumps, high water alarms and stand-by power,
approximately 21,930 linear feet of 12 -inch force main, approximately 9,575 linear feet of 10 -inch force
main, approximately 9,310 linear feet of 8 -inch force main, approximately 11,195 linear feet of 6 -inch
force main, approximately 2,135 linear feet of 4 -inch force main, approximately 10,075 linear feet of 3 -
inch force main, approximately 1,480 Iinear feet of 10 -inch gravity sewer, approximately 105,522 linear
feet of 8 -inch gravity sewer and all associated piping, valves and appurtenances to serve the Town of Surf
City with no discharge of wastes to the surface waters, pursuant to the application received August 2,
1993, and in conformity with the project plan, specifications, and other supporting data subsequently filed
and approved by the Department of Environment, Health and Natural Resources and considered a part of
this permit.
This permit shall be effective from the date of issuance until July 31, 1998, shall void Permit No.
WQ0000795 issued March 29, 1989 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 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 wastewater collected by this sytem shall be treated in the Surf City Wastewater
Treatment Plant prior to being land applied by spray irrigation.
6. 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.
II. OPERATIQN 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 SA, .0202. The ORC of the facility must visit each Class I facility at
least weekly and each Class 11, IIT, 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 $A, .0202.
3. A suitable vegetative cover shall be maintained.
4. Irrigation shall not be performed during inclement weather or when the ground is in a
condition that will cause runoff.
2

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 application rate shall not exceed 0.62 acre-inches/week during the period from
December 1 through March 30.
8. The application rate shall not exceed 1.74 acre-inches/week during the period from April 1
through November 30.
9. No type of wastewater other than that from the Town of Surf City 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.
11. After the sod has been removed, irrigation shall be limited to the volume of water necessary
to re-establish the sod.
12. A minimum of two (2) feet of freeboard shall be maintained in all lagoons. The lagoon
dikes shall be kept free of trees and brush. A suitable cover crop shall be established on the
lagoon dikes to prevent erosion.
13. The Permittee shall provide for the pump station and force main the following items:
a. Pump on/off elevations located so that 2-8 pumping cycles may be achieved per hour in
the pump station,
b. An air relief valve located at all high points along the force main,
c. A screened vent for the wet well,
d. Fillets located in the wet well at the intersection of the flooring and sidewalls,
e. Three feet of cover (minimum) over the force main or the use of ferrous material where
three feet cannot be maintained,
f. Sufficient devices which will protect the pump station from vandals, and
g. Flood protection if the pump station is located below the 100 -year flood elevation.
IIT. MONITORING AND LREPQHI:ING REQUIREMENTS
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.
3

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 (rainfall data),
g) freeboard in the lagoons, 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:
Residual Chlorine NH3 as N
BODS TSS
Fecal Coliform pH
4. Three copies of all operation and disposal records (as specified in condition 111 2) and all
effluent monitoring data (as specified in condition 111 3) 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
5. A soil scientist or agronomist shall submit two (2) interim reports and one (1) annual report
yearly to the Wilmington Regional Office. The interim site visits should be performed in
the fall prior to planting of the winter cover crop, and in the spring before the turf grass
becomes active. The interim report shall be submitted within one month of the site visit and
should contain, but not be limited to, the following:
a. Visual observations of land conditions, irrigation patterns and lagoon levels,
b. Nutrient loading analyses based on average effluent concentrations,
c. Vegetation (plant tissue) analysis, and
d. Recommendations for improving conditions at the spray irrigation fields.
The annual report should be submitted by the soil scientist or agronomist to the Wilmington
Regional Office on or before January 31 of each year and should contain, but not be limited
to, the following:
a. Results of past year's strategy and operation, including harvest reports and the
effectiveness of changes peiforrned based on interim evaluations,
b. Monthly irrigation logs for the year. The logs should denote the maximum
weekly irrigation rate for each month, and
c. Recommendations for the next year, including micro -nutrient additions,
irrigation recommendations and crop management recommendations.
4

1.1
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 proposers to be taken to ensure that the problem does not recur.
IV. 2ROUNDWATER REQUIREMENTS
1. The seven (7) existing monitor wells shall continue to be sampled every March, July and
November for the following parameters:
NO3
TOC
pH
Chloride
NO2
Volatile Organic Compounds -
Ammonia Nitrogen
Orthophosphate
Water Level
Fecal Coliforms
Total Dissolved Solids
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 depth of water in each well shall be measured from the surveyed point on
the top of the casing.
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.
5

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 backUound 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, Post Office Box 29535, Raleigh N.C. 27626-0535 on Form
GW -59 (Compliance Monitoring Report Form) every April, August and December.
2. The Compliance Boundary for the disposal system is specified by regulations in 15 NCAC
2L, Groundwater Classifications and Standards. The Compliance Boundary is established
at either (1) 250 feet from the waste disposal area, or (2) 50 feet within the property
boundary, whichever is closet to the waste disposal area. An exceedance of Groundwater
Quality Standards at or beyond the Compliance Boundary is subject to immediate
remediation action on addition to the penalty provisions applicable under General Statute
143-215.6A(a)(1).
AIso 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.
3. Any additional groundwater quality monitoring, as deemed necessary by the Division, shall
be provided.
V .IPSP -E TI
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 small 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 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.

f 1 f
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 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
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 specked 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.
Permit issued this the 24th day of September, 1993
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
A. Preston Hgward, Jr., P.E., Director j
Division of Edvironmental Management
By Authority of the Environmental Management Commission
Permit Number WQ0000795
7

prnPcs/iroC 8isi)ND,Jyzz
DRAWING NUMBER
'ice }US7 18 AB -01 E

Name of Plant: _AIr /�7 (Z C` r
Owner or Contact cPeerson:
Mailing Address:t', c� JJ
J�
County:Telephone:�9z.q) �� =�1/�� •
NPDES Permit No. NC00 Nondisc, Per. No.W _ C7C'� 47_
fssueDate: Expiration Date:
Existing Facility X _ New Facility
Rated By: e�Ed Renk— Date: <9
Reviewed (Train. & Cert.) Reg. Office
Reviewed (Train. & Cert.) Central Office
ORC ,-, r A } ,s Grade
Plant Class: (circle one) 1
II
til IV Total Points
ITEM POINTS
(5) SECONDARY TREATMENT UNITS
(a) Carbonaceous Stage
(1)
Industrial Pretreatment Units and/or
(i)Aeration - High Purity Oxygen System .....
20
Industrial Pretreatment Program
Diffused Air System ...........
1 0�
(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 Rale ...................
7
consisting only of Item (4) (d) or Items (4) (d) and (11)
(d))
Standard Rale ...............
5
0 20,000 ..........................
1
Packed Tower...............
5
20,001 -- 50,000 ..........................
2
(iii) Biological Aerated Filter or Aerated
50,001 -• 100,000 ..........................
3
Siolooical Filter ......................
10
100,001 -- 250,000 ...................... . • . -
4
(iv) Aerated Lagoons ..................... .
1 0
250,001 •- 500,000 ..........................
5
500,001 --1,000,000 ..........................
(v) Rolaling Biological Contaclors ..........
1 0
1,000,001 -- 2,000,000 ........................
-P
10
2,000,001 (and up) - rate 1 point additional for each
(vi) Sand Filters -
200,000 gpd capacity up to a
inlernillenl biological ...
2
maximum of 30
recirculating biological _ . ..
3
Design Flow (gpd) : fns. ?)A I-)
(vii) Siabilizalion Lagoons ...................
5
(3)
PRELIMINARY UNITS (see definilion no. 32)
Bar
(viii)Ctariher ..............................
5
(a) Screens .................. . .............
(ix) Single stage system for combined
or
carbonaceous removal of BOD and
(b) Mechanical Screens, Sialic Screens or
nitrogenous removal by nitrification
Comminuting Devices . . ......... .............
Grit
2
(see def. No- 12) (Points [or this item
(c) Removal ............. . .......... . ......
0
have to be in addition to items (5) (a)
or
(i) through (5) (a) (viii) .................
8
(d) Mechanical or Aerated Grit Removal ......... , .
2
(x) Nutrient additions to enhance BOD
(e) Flow Measuring Device .......................
1
removal ...................... _ ........
5
or
(f) Instrumented Flow Measurement
�
(x i) Biological Culture ('Super Bugs-) addition
..............
C 4 ,
to enhance organic compound removal .....
5
(g) Preaeralion................................
2
(b) Nitrogenous Stage
(i) Aeration - High Purity Oxygen System .....
20
(h) Influent Flow -Equalization ..................`.
2
Diffused Air System ...........
10
(i) Grease or Oil Separators - Gravity ....... , ..
2
Mechanical Air System (fixed,
Mechanical ..........
3
floating, or rotor) ...... ......
a
Dissolved Air Flotation.
8
Separate Sludge Reaeration .....
3
0) Prechlorination ..........................
5
(ii) Trickling Filler -
High Rale ...... . .......
7
(4)
PRIMARY TREATMENT UNITS
Standard Rale ............
5
(a) Septic Tank (see definition no. 43) ..............
2
Packed Tower ............
(b) Imhoff Tank .....: .................... ........
5
(iii) Biological Aerated Filter or Aerated
(c) Primary Clarifiers ............................
5
Biological Filler .........................
10
(d) Settling Ponds or Settling Tanks for Inorganic
(iv) Rotating Biological Contaclors ............
10
Non-toxic Maieriais 4sludge handling facilities
(v) Sand Filler -
for water purification plants, sand, gravel,
intermittent biological .... ....
2
stone, and other mining operations except
recirculaling biological .. , .....
3
recreational activities such as gem or gold
(vi) Clarifier......
mining) ............... ....... .............. _
2

(6) TERTIARY Qin ADVANCED TREATMENT UNIT
Sludge Digestion Tank - Heated ............. . .
(tip) CHEMICAL ADDITION SYSTEM (S) (See definition No. 9)
a O
Activated Carbons Beds -
5
(not applicable to chemical additions rated as item
Unheated ...... .......
Without carbon regeneration .................. 5
(3) (j), (5) (a) (xi), (6) (a), {6) {b}, (7) (b), (7) (e) ,
Sludge Stabilization (chemical or thermal) .. .. . ..
.
with carbon regeneration ............. '...
1 5
(9) (a), (9) (b), or .(9) (c) 5 points each: List:
(b)
Powdered or Granular Activated Carbon Feed -
Vacuum Assisted .......
5
(d)
Without carbon regeneration .................
5
(e)
Sludge Conditioner (chemical or thermal) ........
with carbon regeneration ...................
15
Sludge Thickener (gravity) ......................
(c)
Air Stripping .............................
5
`
{d}
Denitrificalion Process (separate pfocess) . . .. .
10
(h)
(e)
GIeerodi;.lysis .... . .........................
5
(11) MISCELLANEOUS UNITS
5
Foam Separation .............. 1 .. I ...........
5
(a) Holding Ponds, Holding Tanks or Settling Ponds
(g)
ion Exchange ................................
5
for Organic or Toxic Materials including wastes
{h)
Land Application of Treated Effluent
(k)
from mining operations containing nitrogen and/or
(see definition no- 22b) (not applicable for
similar dewatering devices ....................
phosphorous compounds in amounts signMcanliy
(9) SLUDGE DISPOSAL. (including incinerated ash)
sand, gravel, stone and other similar mining
(a) lagoons ........................................
greater than is common for domestic wastewater .......... 4
(b)
operations)
(b) Effluent Flow Equalization (not applicable to storage
(see definition 22a)
(i) on agriculturally managed sites (See def.
No_ A) ....................... • . • .........
1 0
basins which are inherent in land application systems). 2
(c) Stage Oischarge (no[ applicable to storage basins
1 0
(ii) by high rate infiltration on non-agriculluralty
inherent in land application systems ....................................... 5
managed sites (includes rotary distributors
holds the land application permit ................
.�.
(d) Pumps ................ ...................................................
and similar fixed nozzle systems) ...........
4
e Stand-ByPower Supply '3
(iii) by subsurface disposal (includes low pressure
(1) Thermal Pollution Control Device ............................................. 3
10
pipe systems and gravity systems except at
Landfilled (burial) .............................
5
(9) ..,INFECTION
plants consisling of seplic tank and nitrifica-
(a)
........................ .....
tion fines only) .............................
A
TOTAL POINTS U
(i)
MicroscTeens..................................
5
5
(j}
Phosphorus Removal by Biological Processes
5
Ct-ASS;FICATION
(See def. No. 26) ............................
2 0
{k}
Polishing Ponds - without aeration .......
2
Class I ........................................................... 5 - 25 Points
with aeration ..........
5
Class II ........................................................ 26- 50 Points
(1)
Post Aeration - cascade ..............
0
Class III....................... 51. 65 Paints
diffused or mechanical ...
5
Class IV ......................................................- 66- Up Points
(m) Reverse Osmosis .............................
5
(n)
Sand or Mixed -Media Filters - low rate ..... I .. - ..
2
Facilities having a rating of one through four points, inclusive,
x
high rate ..........
5
do not require a certified operator. Classification of al€ other
(e)
Treatment processes for removal of metal or
facilities requires a comparable grade operator in responsible
cyanide ....................................
1 5
charge.
(p)
Treatment processes dor removal of toxic
materials other than metal or cyanide .........
15
Facilities having an activated sludge process will be assigned
a minimum classification of Class 11.
) SLUDGE TREATMENT
(a)
Sludge Digestion Tank - Heated ............. . .
10
Aerobic. . .... .... . . . . .
5
Unheated ...... .......
3
(b)
Sludge Stabilization (chemical or thermal) .. .. . ..
5
(c)
Sludge Drying Beds - Gravity .................
2
Vacuum Assisted .......
5
(d)
Sludge Elutrialion .............................
5
(e)
Sludge Conditioner (chemical or thermal) ........
5
(f)
Sludge Thickener (gravity) ......................
5
(g)
Dissolved Air Flotation Unit
(not applicable to a unit rates as (3) (i) .........
B
(h)
Sludge Gas Utilization (including gas storage) . .. .
2
(i)
Sludge Holding Tank - Aerated ................
5
Non-aerated ............
2
(j}
Sludge Incineralor - (not including activated
carbon regeneration) .....
10
(k)
Vacuum Filter, Centrifuge or Filter Press or other
similar dewatering devices ....................
10
(9) SLUDGE DISPOSAL. (including incinerated ash)
(a) lagoons ........................................
2
(b)
Land Application (surface and subsurface)
(see definition 22a)
-where the facility holds the land app. permit .. .
1 0
-by contracting to a land application operator who
holds the land application permit ................
2
-land application of sludge by a contractor who does
not hold the permit for the wastewater treatment
facility where the sludge is generated .........
10
(c)
Landfilled (burial) .............................
5
(9) ..,INFECTION
Chlorination
(a)
........................ .....
(b)
Dechlorinalion ........................
5
(c)
Ozone ..............................
5
(d)
Radiation ..........................
5
Facilities having treatment processes for the removal of metal
or cyanide will be assigned a minimum classification of Class 11.
Facilities having treatment processes for the biological removal
of phosphorus will be assigned a minimum classification of Class
III.
In -plant processes and related control equipment which are an
integral part of industrial production shall not be considered waste
treatment. Likewise, discharges of wastewater from residences
having a design flow of 1,000 gpd or less, shat! not be subject to
rating -
ADDITIONAL COMMENTS;