WQ0006168_Final Permit_19920714

State of North Carolina
Department of Environment, Health and Natural Resources
Division of Environmental Management
512 North Salisbury Street • Raleigh, North Carolina 27611
James G. Martin, Governor A. Preston Howard, Jr., P.E.
William W. Cobey, Jr., Secretary Acting Director
July 14, 1992
Mr. Richard H. Koontz,
Associate Superintendent
Stanly County Board of Education
Post Office Box 1399
Albemarle, North Carolina 28002-1399
Subject: Permit No. WQ0006168
Stanly County Board of Education
Endy Elementary School
Subsurface Wastewater Disposal System
Stanly County
Dear Mr. Koontz:
In accordance with your application received February 14, 1992, we are forwarding herewith
Permit No. WQ0006168 dated July 14, 1992, to Stanly County Board of Education for the construction
and operation of a 4,000 GPD low pressure pipe subsurface wastewater disposal system.
This permit shall be effective from the date of issuance until June 30, 1997, 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.
Regional Offices
Asheville Fayetteville Mooresville Raleigh Washington Wilmington Winston-Salem
704/251-6208 919/486-1541 704/663-1699 919/733-2314 919/946-6481 919/395-3900 919/761-2351
Pollution Prevention Pays
P.O. Box 29535, Raleigh, North Carolina 27626-0535 Telephone [phone]
An Equal opportunity Affirmative Action Employer

One set of approved plans and specifications is being forwarded to you. If you need additional
ormation concerning this matter, please contact Mr. John Seymour at 919/ 733-5083.
cc: Stanly County Health Department
Mooresville Regional Office, Water Quality
Mooresville Regional Office, Groundwater
Groundwater Section, Jack Floyd
Training and Certification Unit
J. Thurman Horne, P.E.
Facilities Assessment Unit

NORTH CAROLINA
ENVIRONMENTAL MANAGEMENT COMMISSION
DEPARTMENT OF ENVIRONMENT, HEALTH AND NATURAL RESOURCES
RALEIGH
SUBSURFACE DISPOSAL 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
Stanly County Board of Education
Stanly County
FOR THE
construction and operation of a 4,000 GPD subsurface wastewater disposal system consisting of an
existing grease trap, an existing 5,735 gallon septic tank, an existing 1,849 square foot sand filter
(refurbished), two (2) 1,400 gallon effluent tanks in series with dual alternating 20.9 GPM pumps and
high water alarms, 1,690 linear feet of 2 inch force main, a 1,077 gallon dosing tank with 8 alternating
77.5 GPM pumps and high water alarms, 8 low pressure pipe subsurface disposal subfields totaling
40,575 square feet having 87 laterals at 5 foot on center and 1 foot wide trenches, and all associated
piping, valves, controls, and appurtances, to serve Endy Elementary School with no discharge of wastes
to the surface waters, pursuant to the application received February 14, 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 June 30, 1997, and shall be subject to
the following specified conditions and limitations:
I. PERFORMANCE STANDARDS
1. Upon completion of construction and prior to operation of this permitted facility, a
certification must be received from a professional engineer certifying that the permitted
facility has been installed in accordance with this permit, the approved plans and
specifications. Mail the Certification to the Permits and Engineering Unit, P.O. Box
29535, Raleigh, NC 27626-0535.
2. The Mooresville Regional Office, phone no. 704/ 663-1699 shall be notified at least forty-
eight (48) hours in advance of backfilling of the installed facilities so that an in -place
inspection can be made. Such notification to the regional supervisor shall be made during
the normal office hours from 8:00 a.m. until 5:00 p.m. on Monday through Friday,
excluding State Holidays.
3. In the event that the facilities fail to perform satisfactorily, including the creation of
nuisance conditions, the Permittee shall take immediate corrective action, including those
as may be required by this Division, such as construction of additional or replacement
wastewater treatment or disposal facilities.

4. 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.
5. This permit shall become voidable if the soils fail to adequately absorb the wastes and may
be rescinded unless the facilities are installed, maintained, and operated in a manner which
will protect the assigned water quality standards of the surface waters and ground waters.
6. Adequate measures shall be taken to divert stormwater from the disposal area and prevent
wastewater runoff from the subsurface disposal field.
7. 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.
8. A usable reserve area shall be maintained for wastewater disposal. The reserve area shall
have the capability of accommodating the average daily flow of the facility being served
without exceeding the loading rates of the reserve area while meeting all required buffer
requirements.
9. Diversion or bypassing of the untreated wastewater from the treatment facilities is
prohibited.
10. The following buffers shall be maintained:
a) 100 feet between disposal area and any public or private water supply including
wells
b) 100 feet between disposal area and "SA and SB" classified surface waters
c) 50 feet between disposal area and any stream, lake, river or natural drainageway
d) 50 feet between disposal area and property lines
e) 10 feet between disposal area and surface water interceptor drains or diversions
(upslope)
f) 25 feet between disposal area and surface water interceptor drains or diversions
(downslope) and groundwater drainage systems.
11. A leakage test shall be performed on the septic tank and dosing tanks to insure that any
exfiltration occurs at a rate which does not exceed twenty (20) gallons per twenty-four (24)
hour per 1,000 gallons of tank capacity. The engineer's certification will serve as proof of
compliance with this condition.
I1. 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.Once
the facility is classified, the Permittee must submit a letter to the Certification Commission
which designates the operator in responsible charge within thirty days after the wastewater
treatment facilities are 50% complete.
2

3. The application rates to the disposal field shall not exceed 0.10 GPD/ square foot.
4. 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.
5. No traffic or equipment shall be allowed on the disposal area except while installation
occurs or while normal maintenance is being performed.
6. A suitable cover shall be maintained on the LPP field(s) and the field(s) shall be routinely
mowed. The clippings shall be periodically removed to prevent the build-up of thatch.
III. MONITORING AND REPQRTING REQ11TREMENTS
1. Any monitoring 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. The low pressure lines shall be maintained as necessary (including purging of the lines and
pressure testing) in order to ensure that they remain free of obstructing materials and that
the pressure head on the laterals remains within the design specifications. The highest and
lowest laterals on each subfield shall be checked (and adjusted as necessary) annually to
ensure that the pressure heads are within the approved specifications. If adjustments are
necessary to the highest and lowest laterals, the remaining laterals in that subfield shall also
be checked and adjusted to the approved specifications. Adequate records showing all
maintenance shall be maintained by the Permittee. These records should include but are not
limited to the following:
Items Inspection Frequency
a) Individual dosing pump operation Monthly
b) Individual field rotation Monthly
c) High water alarms Monthly
d) Residual pressure on highest and
lowest lateral on each subfield Annually
3. Three copies of all operation and maintenance records (as specified in condition III 2) and
all effluent monitoring data (as specified in condition 1113) shall be submitted on or before
January 31 of the following year to the following address:
NC Division of Environmental Management
Water Quality Section
Facility Assessment Unit
PO Box 29535
Raleigh, NC 27626-0535
4. A record shall be maintained of all residuals removed from this facility. This record shall
include the name of the hauler, permit authorizing the disposal or a letter from a
municipality agreeing to accept the residuals, date the residuals were hauled, and volume of
residuals removed.
3

5. Noncompliance Noti,fiCatiign:
The Permittee shall report by telephone to the Mooresville Regional Office, telephone no.
704/ 663-1699 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 basin or tank; 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 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.
IV. QRND3YATER REQUIREMENTS
1. Prior to beginning waste disposal operations, two (2) monitor wells, one (1) upgradient
and one (1) downgradient, must be installed to monitor groundwater quality. The wells
shall be constructed such that the water level in the well is never above or below the
screened (open) portion of the well at any time during the year. The location and
construction details for these wells must be approved by the Mooresville Regional Office,
from which a well construction permit must be obtained.
2. The monitor wells must be sampled initially after construction (and prior to waste disposal
operations) and thereafter every April, August, and December for the following parameters:
NO3 TDS
TO( pH
Ammonia Nitrogen Chloride
Water Level Fecal Coliforms
Total Suspended Solids
Volatile Organic Compounds - In December 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.
4

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. The
depth of water in each well shall be measured from the surveyed point on the top of the
casing. These elevations shall be provided to the Regional Hydrogeologist within 60 days
after well construction.
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.
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
May, September, and January.
3. The Compliance Boundary 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 subsurface disposal field, or 50 feet within the
property boundary.
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 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.
4. Any groundwater quality monitoring as deemed necessary by the Division of
Environmental Management shall be provided.
�1

V. INSPECITONS
I. 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 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.
VI. GENERAL CONDITIONS
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 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. A set of approved plans and specifications for the subject project must be retained by the
applicant for the life of the project.
5. The annual administering and compliance fee must be paid by the Permittee within thirty
(30) days after being billed by the Division. Failure to pay the fee accordingly may cause
the Division to initiate action to revoke this permit as specified by 15 NCAC 2H .0205
(c)(4)•
6. 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.
7. 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.
0

8. The Permittee, at least six (6) months prior to the expiration of this permit, shah 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 14th day of July, 1992
-.1-1 , rat
IOn
A. Preston Howard, Jr.,&R, 4qting Pi
Division of Environ ental Man em t
By Authority of the En ' nm ana
Permit No. WQ0006168
7
AGEMENT COMMISSION
Commission

Permit No. WQ0006168
July 14, 1992
Engineer's Certification
L , as a duly registered Professional Engineer in the State of North Carolina,
having been authorized to observe (periodically, weekly, full time) the construction of the
project,
Project Name
Location
for the
Permittee hereby state that, to the best of my abilities, due care and diligence was used in the observation
of the construction such that the construction was observed to be built within substantial compliance and
intent of the approved plans and specifications.
Signature Registration No.
Date
N.

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IALBEIA4RLE) a
o y o V rn oy 49541 Sri

nA t INt.a SCALE -FOR CLASSIFICATION
OF FACILITIES
Name of Plant: F_h »A4 r-
r 01
Owner or Contact Pers n: E'ic1..c A 9 �oc�✓F
Mailing Address: Pa
bc�,•�,rl e, C. Z --- - -----
_—•--_----------� _
County: S Telephone:
- -'
NPDES Permit No. NC00 Nondisc. Per. No. WlQ oo©bf(,
IssueDate: `xpiration Date:
Existing Facility New Facility ✓
Rated By: f Date: .312-314Z-
Reviewed (Train. & Cert.) Reg. Office
Reviewed (Train. & Cert.)' Central Office
ORC Grade
Plant Class: (circle one) C151 11 111
IV T mia! Points iS
ITEM POINTS (5) SECONDARY TREATMENT UNITS
(a)
Carbonaceous Stage
(1) Industrial Pretreatment Units and/or
(i)Aeralion - High Purity Oxygen System .....
20
Industrial Pretreatment Progra,rn
Diffused Air System ...... . • - -
i C
see definition No.
( 33 ) 4
Mechanical Air System (fixed,
(2) DESIG FLOW OF PL NT IN GPD
floating or rotor
(not applicable to non -contaminated cooling waters, sludge
Separate Sludge Reaeralion .....
3
handling facilities for water purification plants, totally r
(i i) Trickling Filler
closed cycle systems (del. No. 11), and facilities
High Rate ...................
7
consisting only of Item (4) (d) or Items (4) (d) and (11) (d
0 20.000
Standard Rate ...............
5
..........................0
Packed Tower...............
5
20,001 -- 50,000.......................... 2
(iii) Biological Aerated Filler or Aerated
50,001 100,000 .................... ............. 3
Siaiocicai Filler .......... . . ...........
1 0
100,001 -- 250,000 .......................... 4
(iv) Aerated Lagoons .....................
1 0
250,001 500,000.......................... 5
500,001--1,000,000 ......... . ................ 8
(v) P.otall ,n Biological Contactors ..........
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 ..
3
Design Flow (gpd) : 4-000 c;pd
(vii) Stabilization Lagoons ...................
5
(3) PRELIMINARY UNITS (see definition no. 32)
(viii)C!arifier ........................ . . . . . .
5
(a) Bar Screens ................................ 1
(ix) Singte stage system for combined
or
carbonaceous removal of BOD and
(b) Mechanical Screens, Static Screens or
nitrogenous removal by nitrification
Comminuting Devices ..... . ..... ...... . .. . ... 2
(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) .. , ......
8
(d) Mechanical or Aerated Grit Removal . , .. , .. , ... 2
(x) Nulrien; additions to enhance BOO
(e) Flow Measuring Device ....................... 1
removal ................. '............ - ..
5
or
(1) Instrumented Flow Measurement .............. 2
(x'k) Biological Culture ('super Bugs") addition
to enhance organic compound removal .....
5
(g) Preaeralion................................ 2 (b)
Nitrogenous Stage
(i) Aeration - High Purity Oxygen Syslem .....
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) ... , .. ......
8
Dissolved Air Flotation. 8
Separate Sludge Reaeralion -
3
(j) Prechlorination . . ............ . ............... 5
... ,
(ii) Trickling Filler -
High Rate ..............
7
r^� PRIMARY TREATMENT UNITS
(a) Septic Tank (see, definition no. 43)
Standard Rate ............
5
..............
Packed Tower, ...........
5
(b) Imhoff Tank .................................. 5
(iii) Biological Aerated Filter or Aerated
(c) Primary Clarifiers ....... . .................... 5
Settling Ponds Tanks for Inorganic
Biological Filter .........................
1 0
(d) or Settling
(iv) Rotating Biological Contactors ...... ,
10
Non -toxic Materials (sludge handling facilities
....
(v) Sand Filter -
for water purilicalion plants, sand, gravel,
stone, and other mining operations except
intermittent biological .
recirculating biological . .
recreational activities such as gem or gold
{vi} Clarifier ...... , .. -
5
mining) ........ ...... 2
.
•

(g) TERTIARY aft ADVANCED TREATMENT UNIT
(a) Activated Carbons Beds -
wilhoui carbon regeneration ................. .
with carbon regeneration ....................
(b) powdered or Granular Activated Carbon Feed -
without carbon regeneration .................
with carbon regeneration .................. .
(c) Air Stripping ....................... ... .
(d) Denitrification Process (separate process) . ... .
(e) Electrodialysis ............................. .
(f) Foam Separation .............................
(g) ton Exchange............... .................
(h) Land Application of Treated Effluent
(see definit-son no. 22b) (not applicable for
sand, gravel, stone 'and other similar mining
operations)
W on agriculturally managed sites (See def.
No. 4) ................I.................
(i i) by high rate infiltration on non-agricullurally
managed sites (includes rotary distributors
and similar lixed nozzle systems) ...........
(iii) by subsurface disposal (includes low pressun
pipe systems and gravity systems except al
plants consisting of septic tank and nitrifica-
tion lines only) .............................
W Microscreens..................................
(j) Phosphorus Removal by Biological Processes
(See def. No.26) ............................
(k) Polishing Ponds without aeration .......
wilh aeration ..........
(1) Post Aeration cascade ..............
diffused or mechanical ,
(m) Reverse Osmosis .............................. .
(n) Sand or Mixed -Media Fitters - low rate ... , ...... .
high rate ..........
(o) Treatment processes for removal of metal or
cyanide....................................
(p) Treatment processes for removal of toxic
materials other than metal or cyanide ........ .
SLUDGE TREATMENT
(10) -CHEMICAL ADDITION SYSTEM (S) (See definition No. 9)
5 (nqt applicable to chemical additions fated as item
1 5 (3) (j), (5) (a) (xi), (6) (a), (6) (b), (7) (b), (7) (e),
(9) (a), (9) (b), or (9) (c) 5 points each: List:
5-
15
5
10
5
5
5
10
4
4
5
20
2
5
0
5
5
2
5
i5
15
(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 Elulriation .............................
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) ........ ,
a
(h)
Sludge Gas Utilization (including gas storage) . . . .
2
(i)
Sludge Holding Tank.- Aerated .................
5
Non -aerated ............
2
(j}
Sludge Incinerator (not including activated
carbon regeneration) .....
10
(k)
Vacuum Filter, Centrifuge or Filter Press or other
similar dewalering devices ....................
10
,S) SLUDGE DISPOSAL, (including incinerated ash)
(a) Lagoons ........................................
2
(b)
Land Application (surface and subsurface)
j,see definition 22a)
-
-where the facility holds the land app. permit
10
%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 waslewater treatment
facility where the sludge is, generated ......
10
(c)
Landfilled (burial) ............................ 1
5
(9) DISINFECTION
(a)
Chtorinalion ........................ .....
5
(b)
Dechlorination ....... I . ..............
5
(c)
Ozone ..............................
5
(d)
Radiation ..........................
5
_
5
01) MISCELLANEOUS
UNITS
(a)
Holding Ponds, Holding Tanks or Settling Ponds
for .Organic or Toxic Materials including wastes
from mining operations containing nitrogen and/or
phosphorous compounds in amounts significantly
greater than is common for domestic wastewater ..........
4
(b)
Effluent Flow Equalization (not. applicable 10 storage
basins which are inherent in land' application systems).
2
(c)
Stage Discharge (not applicable lo'storage basins
inherent in land applicalion systems .......................................
5
(d)
Pumps ... ...... ....... .............. .......................... ............... ....... ................ w,,.',tr
(e)
Stand -By Power Supply..................................................................
(f)
Thermal Pollution Control Oevice.............................................
3
TOTAL POINTS U
CLASS IF1CATiCfti'
ClassI ........................................................... 5 - 25 Points
Class II ........................................................ 26- 50 Points
Class III ....................................................... 51- 65 Points
Class IV ........................................................ 66- Up Points
Facilities having a rating of one through four points, inclusive,
do not require a certified operator. Classification of all other
facilities requires a comparable grade operator in responsible
charge.
Facilities having an activated sludge process will be assigned
a minimum classification of Class 11.
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
Ill.
In -plant processes and related control equipment which are an
integral part of industrial production shalt not be considered waste
treatment. Likewise, discharges of waslewater from residences
having a design flow of 1,000 .gpd or less, shalt not be subject 10
rating.
ADD fTI NAL MM NT :