WQ0004972_Final Permit_19910627

°.1"
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. Alartin, Governor Gcorge T. Everett, Ph.D
WiIIi;im W. Cob.cy, Jr., Secretary Director
June 27, 1991
Mr. John 1V. Newnan, Preserve Manager
Thousand Trails, Inc.
Route #2 Box 393 A
Advance, NC 27006
Subject: Permit No. WQ0004972
Thousand Trails, Inc.
Forest Lake
Wastewater Spray Irrigation
Davie County
Dear Mr. Newman:
In accordance with your application received April 17, 1991, we are forwarding herewith Permit
No. WQ0004972, dated June 27, 1991, to Thousand Trails, Inc. for the c013tinued operation of the subject
facility.
This permit shall be effective from the date of issuance until May 31, 1996, shall hereby void
Permit No. 13241 issued June 9, 1986, 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 wilnninglon Winston-Salem
704/251-6208 919/486-1541 704/663-1699 919/733-2314 919/946-6481 919/395-3900 919/896-7007
Pollution Prevention Pays
P.O. Box 29535, Raleigh, North Carolina 27626-0535 Telephone [phone]
An Equal Opportunity Affirmative Action Employer

N,lr. Newm aii
MIQ0004972
June 27, 1991
*-V,
If you need additional information micerimig, this matter, please contact Mr. Lindsay L. Mize at
919/ 73 3-5083.
trely,
George T. Eve en
cc: Davie Comity Health Department
Winston-Salem Regional Office
Groundwater Section
Training and Certification Unit
F,,icility Assessment

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
Thousand Trails, Inc.
Davie County
WOMWITail
continued operation of a collection system serving 283 camp sites and 18 cabins consisting of nine (9)
;urinder pump stations with associated collection piping, 430 linear feet of 3 - inch force plain, 455 linear
feet of 4 - inch force inain, and 935 linear feet of 6 - inch force main; and a 45,000 GPD extended aeration
wastewater treatment facility with effluent storage lagoon and spray irrigation disposal system which
consists of a 14,800 gallon capacity aerated surge tank with influent bar screen, dual 74 GPM submersible
pumps, and high water alarms, a 45,000 gallon capacity aeration tank, dual 285 CFM blowers, a 4500
s"anon sludge holding tank, a 7500 gallon clarifier, a 940 gallon baffled chlorine contact tank with
hypochlorinator, a 0.408 MG capacity lagoon with PVC liner for storage of treated effluent, and dual 142
GPM effluent closing pumps discharging to a 9 - acre spray irrigation field with thirty (30) sprinkler heads
to serve Thousand Trails, Inc. with no discharge of wastes to the surface waters, pursuant to the
application received April 17, 1991 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 apart of this permit_
This permit shall be effective from the date of issuance until May 31, 1996, and shall be subject to
the following specified conditions and limitations:
I. PERFORMANCE STANDARDS
The spray irrigation facilities shall be effectively maintained and operated at all times so
that there is no discharge to the surface waters, nor any contamination of ground waters
which will render them unsatisfactory for normal use. In the event that the facilities fail to
perform satisfactorily, including the creation of nuisance conditions or failure of the
irrigation area to adequately absorb the wastewater, the Perrittee 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.
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.
The following buffers shall be maintained (existing facilities may be exempt):
a) 400 feet between wetted area and any residence 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.
lI. OPERATION ALM MAINTENANCE�REQUIREMENTS
l . 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 of the
wastewater treatment facilities. The operator must hold a certificate of the type and grade at
least equivalent to the classification assigned to the wastewater treatment facilities by the
Certification Commission.
A suitable year round 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.
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.
The application rate shall not exceed: a) 0.9 inch/acre/week and b) 0.11 inch/hour during
dosing c) the treated wastewater shall be uniformly applied to avoid runoff, pondin�(T
erosion.
8. No type of wastewater other than that from Thousand Trails, Inc. 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 perforrried.
10. Public access to the land application sites shall be controlled during active site tlse. Such
controls may include the posting of signs showing the activities being conducted at each
site.
11. Freeboard in the treated wastewater storage lagoon shall not be less than one (1) foot at any
time.

III. NIONITORUN(I AND REPORTING 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.
2. Adequ,ite 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.
The effluent from the subject facilities shall be monitored by the Pennittee at the point prior
to irrigation every March, July, and November for the following parameters:
B OD5 TS S
Fecal Coliform pH
\rH3 as N
4. Three copies of all operation and disposal records (as specified in condition III 2) and all
effluent monitoring data (as specified in condition IIl 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. Noncompliance Notification:
The Permittee shall report by telephone to the Winston-Salem Regional Office, telephone
no. 919/896-7007, 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.
3

* V.
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 E11ust outline
the actions taken or proposed to be taken to ensure that the problem does not recur.
IV. GROUNDWA,rER REC)UIREMENTS
1. The four (4) existing monitoring wells shall continue to be sampled every March, July, and
November for the following parameters:
NO3 (10.0)
TDS (500.0)
pH (6.5 - 8.5 Standard Units)
Chloride (250.0)
Total Suspended Solids
Volatile Organic Compounds
below).
Ammonia Nitrogen
TOC
Water Level
Fecal Colifornls (1/100ml)
- In November only (by Method 1 or Method 2
Method 1: Method 6230D (Capillary - Column), "Standard Methods For The Examination
of Water and Wastewater", 17th ed., 1989.
Method 2: Method 502.2 "Methods For The Determination of Organic Compounds in
Drinking Water", U.S. EPA - 600/4-88/039.
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. The
depth of water in each well shall be measured from the surveyed point on the top of the
casing.
The numbers in parentheses represent the maximum allowable concentrations in
groundwater for the various analytical parameters, as specified in 15 NCAC 2L
(Groundwater Classifications and Standards]. Unless otherwise specified, the units for
these concentrations are expressed as milligrams per liter.
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
�i-hich may be present. The results of all analyses 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 Repoli Form) every
April, August, and December.
4

2. The Coi1iplialice Boundary delineated on the attached site plan for the disposal system is
specified by regulations in 15 NCAC 2L, Classifications and dater 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 143-215.6(1)a. The sale of property, by the Permittee, which is
within or contiguous to the disposal System site may alter location of the Compliance
For facilities permitted on or after December 30, 1983, the Compliance Boundary is
established at the lesser of 250 feet from the perimeter if the waste disposal area, 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 pei»littee 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. No land application of waste activities shall be under taken when the seasonal high water
table is less than three (3) feet below land surface.
4. Any additional groundwater quality monitoring, as deemed necessary by the Division, shall
be provided.
5. Any on - site monitoring wells not being used shall be abandoned in accordance with
NCAC 2C .0113.
INSPECTIONS
1. Adequate inspection, maintenance, and cleaning shall be provided by the Permittee to
insure proper operation of the subject facilities.
2. The Permittee or his designee shall inspect the wastewater treatment and disposal facilities
to prevent malfunctions and deterioration, operator errors and discharges which may cause
or lead to the release of wastes to the environment, a threat to human health, or a nuisance.
The Permittee shall keep an inspection log or summary including at least the date and time
of inspection, observations made, and any maintenance, repairs, or corrective actions
taken by the Permittee. This log of inspections shall be maintained by the Permittee fora
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 truthorized 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
groundWllei-, surface water, or leachate.
VT. GENERAL CONDITIONS
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.
?. 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 perrnit request must be
submitted to the Division of Environmental Management accompanied by an application
fee, documentation from the parties involved, and other supporting materials as may be
appropriate. The approval of this request will be considered on its merits and may or may
not be approved.
4. Failure to abide by the conditions and limitations contained in this permit may subject the
Permittee to an enforcement action by the Division of Environmental Management in
accordance with North Carolina General Statute 143-215.6.
5. The issuance of this permit does not preclude the Permittee from complying with any and
all statutes, rules, regulations, or ordinances which may be imposed by other government
agencies (local, state, and federal) which have jurisdiction.
6. Prior to any transfer of this land, a notice shall be given to the new owner that gives full
details of the materials applied at this site.
7. A set of approved plans and specifications for the subject project must be retained by the
Perimittee for the life of the project.
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).
9. The Permittee, at least six (6) months prior to the expiration of this permit, shall request its
extension. Upon receipt of the request, the Commission will review the adequacy of the
facilities described therein, and if warranted, will extend the permit for such period of time
and under such conditions and limitations as it may deem appropriate.
10. Issuance of this permit hereby voids Permit No. 13241 issued June 9, 1986.
6

v
Permit issucci this the. 27th day of June, 1991
:•'N'QlZ'I F1 CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
—Gc.on,c T. Evere. irecto,
Division o1 Envir rillelltal A Ling ge���ent
By Authority of al Management Commission
Pe;;:lit l\`UMber \VQO(X)4972
7

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-

RATING SCALE FOR CLASSIFICATION OF FACILITIES
Name of Plant: _1_6usa rd Inc,
Owner or Contact Person: -okp-)
Mailing `Address:�u�Z �aCly
(�
_ r t CS V0. n C 2� ------
County: I,.Cxvt(a- Telephone: �q I 3'
NPDES Permit No. NCOO Nondisc. Per, No. Ls1 a>049 Z
IssueDate: Expiration Date:
Existing Facility ✓ New Facility
Rated By: K n"!aVv - Date:
Reviewed (Train. & Cert.) Reg, Office
Reviewed (Train. & Cert.) Central Office
ORC C�IUEA-/ritj Ct 1m9p, �_ Grade
ITEM POINTS ITEM
(1) Industrial Pretreatment Units and/or
Industrial Pretreatment Program
(see -definition No. 33)
4
(2) DE,910 FLOW OF PLANT IN GPO
(not applicable to non -contaminated cooling
waters, sludge handling facilities for water
purification plants, totally closed cycle
systems (def. No. 11), and facilities
consisting only of Item (4) (d) or Items (4) (d)
and (11) (d))
0 - 2000..........................
1
20,001 50,000..........................
�}
50,001 100,000..........................
',
100,001 250,000 ..........................
4
250,001 500,000..........................
5
500,001-•1,000,000..........................
8
1,000,001 -- 2,000,000 ........................
10
2,000,001 (and up) - rate 1 point additional for each
200,000 gpd capacity up to a
maximum of 30
Design Flow (gpd) : 4s.000
(3) PRELIMINARY UNITS (see definition no. 32)
(a) Bar Screens ................................ Q
or
(b) Mechanical Screens, Stalic Screens or
Comminuting Devices ........... 2
(c) Grit Removal ............................... 1
a
(d) Mechanical or Aerated Grit Removal ........... 2
(e) Flow Measuring Device ....................... 1
or
(1) instrumented Flow Measurement ..............
(g) Preaeralion................................ 2
(h) Influent Flow Equalization ................... 2O
(i) Grease or Oil Separators - Gravity .......... 2
Mechanical .......... 3
Dissolved Air Flotation. 8
(j) Prechlorination .............................. 5
POIN"
(4) PRIMARY TREATMENT UNITS
(a) Septic Tank (see definition no. 43) ............. .
(b) Imhoff Tank ................................. .
(c) Primary Clarifiers ........................... .
(d) Settling Ponds or Settling Tanks for Inorganic
Non -toxic Materials (sludge handling facilities
for water purification plants, sand, gravel,
stone, and other mining operations except
recreational activities such as gem or gold
mining)............ ..........................
(5) SECONDARY TREATMENT UNITS
(a) Carbonaceous Stage
(i)Aeration - High Purity Oxygen System .... .
Diffused Air System ...........
Mechanical Air System (fixed,
floating or rotor) . .. .. . . . . . . . . .
Separate Sludge Reaeration .... _
(i i) Trickling Filter
High Rate ...................
Standard Rate ............. . .
Packed Tower ...............
(iii) Biological Aerated Filter or Aerated
Biological Filler ......................
(iv) Aerated Lagoons ..................... .
(v) Rotating Biological Conlaclors ......... .
(vi) Sand Filters -
intermittent biological ... _ .
recirculating biological . . . . .
(vii) Stabilization Lagoons ...................
(viii)Clarifier ....... . ..................... .
(ix) Single stage system for combined
carbonaceous removal of BOD and
nitrogenous removal by nitrification
(see del- No. 12) (Points for this item
have to be in addition to items (5) (a)
(i) through (5) (a) (viii) .......
(x) Nutrient additions to enhance 130D
removal ...............................
(xi) Biological Culture ('Super Bugs') addition
to enhance organic compound removal . - .. .

(b) Nitrogenous Stage
(i) Aeration - High Purity Oxygen System .....
20
Diffused Air System ...........
10
Mechanical Air System (fixed,
floating, or rotor) ...... ......
8
Separate Sludge Reaeration .....
3
(i i) Trickling Filter -
H€gh Rate ..............
7
Standard Rate ............
5
Packed Tower ............
5
(iii) Biological Aerated Filter or Aerated
Biological Filter ...................... . ..
10
(iv) Rotating Biological Contactors ............
10
(v) Sand Filter -
intermittent biological ........
2
recirculating biological ........
3
(vi) Clarilier. ................................
5
(6) TERTIARY OR ADVANCED TREATMENT UNIT
(a) Activated Carbons Beds -
without carbon regeneration ..................
5
with carbon regeneration ....................
15
(b) Powdered or Granular Activated Carbon Feed -
without carbon. regeneration .................
5
with carbon regeneration ...................
15
(c) Air Stripping .............................
5
(d) Denitrification Process (separate process) . .. ..
10
(e) Electrodialysis ..............................
5
(1) Foam Separation ..............................
5
(g) Ion Exchange...... ..........................
5
(h) Land Application of Treated Effluent
(see definition no. 22b) (not applicable for
sand, gravel, stone and other similar mining
operations)
-{i} on agriculturally managed sites (See def.
No. 4) ...................................
io
<:
(ii) by high rate infiltration on non -agriculturally
managed sites (includes rotary distributors
and similar fixed nozzle systems) ...........
4
(€fi) by subsurface disposal (includes tow pressure
pipe systems and gravity systems except at
plants consisting of septic tank and nitrifica-
tion lines only) .............................
4
(i) Microscreens ......... .......................
5
(j} Phosphorus Removal by Biological Processes
(See def. No. 26) .............................
20
(k) Polishing Ponds - without aeration .......
2
with aeration ..........
5
(1) Post Aeration - cascade ..............
0
diffused or mechanical ...
5
(m) Reverse Osmosis ............................... 5
(n) Sand or Mixed -Media Filters - low rate ........... 2
high rate .......... 5
(a) Treatment processes for removal of metal or
cyanide.................................... 15
(p) Treatment processes for removal of toxic
materials other than metal or cyanide ......... 15
(7) 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 Elulriation .............................
5
(e)
Sludge Conditioner (chemical or thermal) ........
5
( 1)
Sludge Thickener (gravity) ......................
5
(g)
Dissolved Air Flotation Unit
(not applicable to a unit rates as (3) (i) .........
8
(h)
Sludge Gas Utilization (including gas storage) . . . .
2
(i) Sludge Holding Tank - Aerated ................ L5
Non -aerated ............ 2
{j) Sludge Incinerator - (not including activated
carbon regeneration) ..... 10
(k) Vacuum Filter, Centrifuge or Filter Press or other
similar dewatering devices .......... I ...... I .. 10
(8) 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 o
-by contracting 10 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) DISINFECTION
(a) Chlorination ..............................
0
(b) Dechlorination ................. . ......
5
(c) Ozone ..............................
5
(d) Radiation ..........................
5
(10) CHEMICAL ADDITION SYSTEM (S) (See definition No. 9)
(not applicable to chemical additions rated as item
(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
5
5
5
(11) 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 .-. ....0
(b)
Effluent Flow Equalization (not applicable to storage
basins which are inherent in land application systems)-
2
(c)
Stage Discharge (not applicable to storage basins
inherent in land application systems .......................................
5
(d)
Pumps .......................................... ....................... ...................................
ice
(e)
Stand -By Power Supply ............. ___ ..............................................
3
(f)
Thermal Pollution Control Device.. ........ ..................................
3
TOTAL POINTS 4<
CLASSIFICATION
ClassI ........................................................... 5 - 25 Points
Class II ........................................................ 26- 50 Points
ClassIII ....................................................... 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 If.
Facilities having treatment processes for the removal of metal
or cyanide will be assigned a minimum classification of Class It.
Facilities having treatment processes for the biological removal
of phosphorus will be assigned a minimum classification of Class`
III.