HomeMy WebLinkAboutWQ0002617_Final Permit_19930329State of North Carolina
Department of Environment, Health and Natural Resources
Division of Environmental Management
512 North Salisbury Street • Raleigh, North Carolina 27604
James B. Hunt, Jr., Governor
March 29, 1993
Mr. Steve Smith, Town Administrator
Town of Stoneville
Post Office Box 71
Stoneville, North Carolina 27048
Jonathan B. Howes, Secretary
Subject: Permit No. WQ0002617 Amendment
Town of Stoneville
Land Application of Sludge
Rocldngham County
Dear Mr. Smith:
In accordance with your application received August 14, 1992, we are forwarding herewith Permit
No. WQ0002617 as amended, dated March 29, 1993, to the Town of Stoneville for the continued
operation of a land application of sludge program. This permit amendment consists of adding
approximately 94.01 acres to the existing land application program.
Please be advised of condition 1115 which states that no land application of the sludges included in
this permit shall commence unless the permittee can demonstrate the the process to significantly reduce
pathogens is met. The permittee shall maintain records which show that the sludges prior to land
application when conducted by agitating sludge with air or oxygen maintained aerobic conditions at
residence times ranging from 60 days at 150C to 40 days at 20aC or when conducted in the absence of air
maintain residence times ranging from 60 days at 200C to 15 days at 350C.
This permit shall be effective from the date of issuance until December 31, 1994 and shall void
Permit No. WQ0002617 issued February 7, 1990, 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.
Regional Offices
Asheville Fayetteville Mooresville Raleigh Washington Wilmington Winston-Salem
704/251-6208 919/486-1541 704/663-1699 919/57IA700 9191946-6481 919/395-3900 919/896-7007
Pollution Prevention Pays
P.O. Box 29535, Raleigh, North Carolina 27626-0535 Telephone 919-733-7015
An Equal Opportunity Affirmative Action Employer
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,l Angela Y. Gxiffin at
919/ 733-5083.
Sincerely,
i` _ L
A. Pre r n Howard, Jr., P.E.
Director
cc: Rockingham County Health Department
EWR, Inc.
Winston-Salem Regional Office, Water Quality Section
Winston-Salem Regional Office, Groundwater Section
Jacks Floyd, Groundwater Section Central Office
Training and Certification
Facilities Assessment Unit
NORTH CAROLINA
ENVIRONMENTAL MANAGEMENT COMMISSION
DEPARTMENT OF ENVIRONMENT, HEALTH AND NATURAL RESOURCES
RALEIGH
SLUDGE LAND APPLICATION 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 Stoneville
Rockingham County
FOR THE
continued operation of a sludge land application program consisting of the application of approximately
91.5 dry tons per year of sludge from the Town of Stoneville wastewater treatment facility to
approximately 143.26 acres of land in Rockingham County with no discharge of wastes to the surface
waters, pursuant to the application received August 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 December 31, 1994 and shall void
Permit No. WQ0002617 issued February 7, 1990, and shall be subject to the following specified
conditions and limitations:
The Winston-Salem Regional Office, telephone number (919) 896-7007, and the
appropriate local governmental official (county manager/city manager) shall be notified at
least twenty-four (24) hours prior to the initial application of the sludge so that an
inspection can be made of the application sites and application method. 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. Also the Rockingham
County Manager's office must be notified prior to the initial application so that they will be
aware that the operation has commenced.
2. This permit shall become voidable if the soils fail to adequately absorb the wastes and may
be rescinded unless the sites are maintained and operated in a manner which will protect
the assigned water quality standards of the surface waters and ground waters.
3. The land application program shall be effectively maintained and operated as a non -
discharge system to prevent the discharge of any wastes resulting from the operation of this
program.
1. The facilities and disposal sites shall be properly maintained and operated at all times.
2. A suitable vegetative cover as listed in condition H 3, shall be maintained in accordance
with the crop management plan approved by this Division.
3. The application rates shall not exceed the following for the specified crops:
Crop
PAN (lbs/acre/year)
Corn
200
Fescue
250
Pasture
200
Soybeans
100
Small Grains
100
4. No sludges other than the following are hereby approved for land application in accordance
with this permit:
Permit Estimated
Source County Number -Volume( dry tons/year)
Town of Stoneville Rockingham NC0028011 91.5
VVVVTP
5. The lifetime heavy metal loadings shall not exceed the following for the corresponding
Cation Exchange Capacities (CEC):
Lifetime Loadings (lbs/acre)
Parameter
CEC < 5
CEC 5 - 15
CEC > 1
Lead
500
1000
2000
Zinc
250
500
1000
Copper
125
250
500
Nickel
125
250
500
Cadmium
4.5
9
18
6. 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 H, 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.
7. Adequate procedures shall be provided to prevent surface runoff from carrying any
disposed or stored sludge material into any surface waters.
8. Animals shall not be grazed on sludge applied land within a 30-day period following the
sludge application. Application sites that are to be used for grazing shall have fencing that
will be used to prevent access after each application.
9. Surface applied sludge will be plowed or disced within twenty-four (24) hours after
application on lands with no cover crop established-
3
10. For areas that are prone to flooding or within the 100-year flood elevation, sludge may be
applied only during periods of dry weather. The sludge must be incorporated into the soil
within twenty-four (24) hours of application.
11. Appropriate measures must be taken to control public access to the land application sites
during active site use and for the 12-month period following the last sludge application
event. Such controls may include the posting of signs indicating the activities being
conducted at each site.
12. Adequate provisions shall be taken to prevent wind erosion and surface runoff from
conveying pollutants from the sludge application area onto the adjacent property or into the
surface waters.
13. Sludge shall not be applied in inclement weather or until 24 hours following a rainfall event
of 1/2-inch or greater in 24 hours. Any emergency sludge disposal measures must fast be
approved by the Division of Environmental Management.
14. The site shall be adequately limed to a soil pH of at least 6.5 prior to sludge application.
Sludge may be applied to sites with a pH of less than 6.5 provided a sufficient amount of
lime is also applied to achieve a final pH of the lime, sludge and soil mixture of at least 6.5.
15. No land application of the sludges included in this permit shall commence unless the
permittee can demonstrate the the process to significantly reduce pathogens is met. The
permittee shall maintain records which show that the sludges prior to land application when
conducted by agitating sludge with air or oxygen maintained aerobic conditions at residence
times ranging from 60 days at 150C to 40 days at 200C or when conducted in the absence
of air maintain residence times ranging from 60 days at 200C to 15 days at 350C.
1. Any monitoring (including groundwater, surface water, sludge, soil, or plant tissue
analyses) deemed necessary by the Division of Environmental Management to insure
protection of the environment will be established and an acceptable sampling and reporting
schedule shall be followed. If monitoring data indicates minimal or no concern to the
Division, reduction of monitoring requirements may be pursued after two annual reporting
periods.
2. Proper records shall be maintained by the Permittee tracking all disposal activities. These
records shall include, but are not necessarily limited to the following information:
a) source of sludge
b) date of sludge application
c) location of sludge application (site, field, or zone #)
d) method of application
e) weather conditions
f) soil conditions
g) type of crop or crop to be grown on field
h) volume of sludge applied in gallons/acre and dry tons/acre
i) annual and cumulative totals of dry tons/acre of sludge, annual and cumulative
pounds/acre of each heavy metal (which shall include, but not be limited to lead,
nickel, cadmium, copper and zinc), annual pounds/acre of plant available nitrogen
(PAN), and annual pounds/acre of phosphorus applied to each field.
2
3. A representative annual soils analysis (Standard Soil Fertility Analysis) shall be conducted
of each site receiving sludge in the respective calendar year and the results maintained on
file by the Permittee for a minimum of five years. The Standard Soil Fertility Analysis
shall include, but is not necessarily limited to, the following parameters:
% Base Saturation
Magnesium
Phosphorus
Potassium
Lead1
Zincl
pH
Manganese
Cation Exchange Capacity
Sodium
Nickell
Cadmiuml
Copperl
Calcium
l Soils analysis for these parameters shall be conducted once prior to permit renewal on
soils from each site which has received sludge during the permit cycle.
4. A quarterly sludge analysis and annual Toxicity Characteristics Leaching Procedure
(TCLP) analysis shall be conducted by the Permittee and the results maintained on file by
the Permittee for a minimum of five years. If land application occurs at a frequency less
than quarterly, sludge analysis will be required for each instance of land application.
The sludge analysis shall include but is not necessarily limited to the following parameters:
% total solids
Magnesium
Chlorides
Sulfate
Phosphorus
Potassium
Lead
Zinc
Copper
Nickel
Cadmium
Chromium
Sodium
Calcium
Total Nitrogen
Ammonia Nitrogen
Nitrate/Nitrite Nitrogen
pH
Plant Available Nitrogen (by calculation)
The TCLP analysis shall include the following parameters:
Arsenic
Barium
Benzene
Cadmium
Carbon tetrachloride
Chlordane
Chlorobenzene
Chloroform
Chromium
o-Cresol
m-Cresol
p-Cresol
Cresol
2,4-D
1,4-Dichlorobenzene
1,2-Dichloroethane
1, 1 -Dichloroethylene
2,4-Dinitrotoluene
Endrin
Heptachlor (and its hydroxide)
Hexachlorobenzene
Hexachloro-1,3-butadiene
Hexachloroethane
Lead
Lindane
Mercury
Methoxychlor
Methyl ethyl ketone
Nitrobenzene
Pentachlorophenol
Pyridine
Selenium
Silver
Tetrachloroethylene
Toxaphene
Trichloroethylene
2,4,5-Trichlorophenol
2,4,5-Trichlorophenol
2,4,5-TP (Silvex)
Vinyl chloride
E
5 . All sludges included in this permit must be monitored for compliance with condition 110 of
this permit. Data to verify stabilization by a process to significantly reduce pathogens (as
described in 40 CFR Part 257, Appendix II) must be maintained by the Permittee. The
required data is specific to the stabilization process utilized, but should be sufficient to
clearly demonstrate compliance with 40 CFR Part 257.
6. Three copies of all monitoring and reporting requirements as specified in conditions 1111,
III 2, III 3, III 4, and lII 5 shall be submitted annually on or before March 1 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
7. Noncompliance Notification:
The Permittee shall report by telephone to the Winston-Salem Regional Office, telephone
number (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 with the land application program which results in the land
application of significant amounts of wastes which are abnormal in quantity or
characteristic.
b. Any failure of the land application program resulting in a release of sludge material
to receiving waters.
c. Any time that self -monitoring information indicates that the facility has gone out of
compliance with the conditions and limitations of this permit or the parameters on
which the system was designed.
d. Any process unit failure, due to known or unknown reasons, that render the facility
incapable of adequate sludge treatment.
e. Any spillage or discharge from a vehicle or piping system transporting sludge to the
application site.
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.
1. Any groundwater quality monitoring as deemed necessary by the Division of
Environmental Management shall be provided.
2. No land application of waste activities shall be undertaken when the seasonal high water
table is less than three feet below land surface.
VAINEFOU VWWWORIM
The Permittee or his designee shall inspect the sludge storage, transport, 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 Pernttee
for a period of three years from the date of the inspection and shall be made available upon
request by the Division of Environmental Management or other permitting authority.
2. 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.
:: I WKIJ►! f►
1. This permit shall become voidable unless the land application activities are carried out in
accordance with the conditions of this permit and in the manner approved by this Division.
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 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. This permit shall become voidable unless the agreements between the Permittee and the
landowners/lessees are in full force and effect
7
5. The following are approved sites for sludge application (see attached map(s)):
Site Field Application
Number County Owner/Lessee Number Areal acres
1
Rockingham
Ralph Leake
1-6
36.54
2
Rockingham
Arnold Johnson
7-9
12.71
STl
Rockingham
Dorothy Treadway
1
3.00
2
3.95
3
8.90
4
2.10
5
3.00
ST2
Rockingham
William Treadway
1
16.00
ST3
Rockingham
Jack Rakestraw
1
3.90
2
4.90
3
9.80
4
8.1
5
13.80
6
1.56
ST4
Rockingham
Earl McCollum
1
15.00
Total
143.26
1 - Application Area excludes buffer areas.
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 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 revolve this permit as specified by 15 NCAC 2H .0205
(c)(4).
8. 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.
9. A set of approved documents for the subject project must be retained by the applicant for
the life of the permit.
10. The Perminee, 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.
11. This permit may be modified, or revoked and reissued to incorporate any conditions,
limitations and monitoring requirements the Division of Environmental Management deems
necessary in order to adequately protect the environment and public health.
Permit issued this the 29th day of March, 1993
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
00rr(�" (:�Scm , /L
A. Presto oward, Jr., .E., Director
Division o nvironmental Management
By Authority of the Environmental Management Commission
Permit No. WQ0002617 Amendment
9
RATING SCALE FOR CLASSIFICATION OF FACILITIES
Name of Plant: a
L� rp
Owner or Contact Person:
S
.Mailing Address: Aso 6�x 7t
s 4-r,-, e- v. tp— ,-/, c. 0
County: Telephone: 41 5 - 573 - 9J 9
NPDES Permit No. WC00,2 ro !(
Nondisc. Per. No.
lssueDate: /G / Expiration Date:_3/ J
Existing Facility New
Facility
Rated By: d.
Date: 1—
Reviewed (Train. & Cert-) Reg. Office
2- 2
Reviewed' (Train. & Cert.) Central
O#tic
. ORC_ �a.,-r.� _� %
Grade 7--
ITEM POINTS
ITEM POINT
(1) Industrial Pretreatment Units and/or
(4) PRIMARY TREATMENT UNITS
Industrial Pretreatment Program /
(see -definition No. 33) 19
(a) Septic Tank (see derinition no. 43) ..............
(b) Imholf Tank ..................................
2
S
(2) JQFSlQN FLOW OF PLANT IN GPO
(c) Primary Clarifiers ............................
S
(not applicable to non -contaminated cooling
(d) Settling Ponds or Settling Tanks for Inorganic
waters, sludge handling facilities for water
Non -toxic Materials (sludge handling facilities
purification plants, totally closed cycle
for water purilicalion plants, sand, gravel,
systems (del. No. 11), and facilities
stone, and other mining operations except
consisting only of Item (4) (d) or Items (4) (d)
recreational activities such as gem or gold
and (11) (d))
mining) .. .. .......................
2
0 — 20,000 ................... ► ...... 1
(5) SECONDARY TREATMENT UNITS
20,001 — 50,000 .................. . . . ..... 2
(a) Carbonaceous Stage
50.001 — 100.000 ..........................
I
(i)Aeration - High Purity Oxygen System .....
20
100,001 — 250,000 ..........................
Diffused Air System ...........
250,001 — 500,000................. ..... 5
Mechanical Air System (fixed.
$00.001--1.000,000 .......................... 8
floating or rotor) . ... .......
i
1,000,001 2.000,000 ......... ............ .. 10
Separate Sludge Reaeration .....
3
2,000,001 (and up) - rate 1 point additional for each
(it) Trickling Filter
200,000 gpd capacity up to a
High Rate ...................
7
maximum of 30
Standard Rate ...............
5
Packed Tower...............
5
(Ili) Biological Aerated Filter or Aerated
Design Flow (gpd)
Biological Filter ......................
10
(Iv) Aerated Lagoons ..................... .
10
(v) Rotating Biological Contactors ..........
10
(3) PRELIMINARY UNITS (see deru,ition no. 32)
(a) Bar Screens
4
(vi) Sand Filters-
intermittent biological ..
2
................................
recirculating biological .-....
3
or
(b) Mechanical Screens, Stalic Screens or
(v7 Stabilization lagoons.... . + +........
-�`- (viii)Clarifier ..............................
Comminuting Devices ........................
(ix) Single stage system for combined
(c) Grit Removal ...............................
carbonaceous removal of SOD and
or
(d) Mechanical or Aerated Grit Removal ........... 2
nitrogenous removal by nitrification
(see del. No. 12) (Points for this item
(e) Flow Meuuring Device ....................... 1
have to be in addition to items (5) (a)
of
(I} instrumented Flow Measurement , , , , , , , , , , , , , , D.
(1) through (S) (a) (vs+) .................
(x) Nutrient additions to enhance 900
e
(g) Preaeration................................ 2
removal ..... ... ..... .. .. ...
5
(h) Influent Flow Equa5=lion 2
(xi) Biological Culture ('Super Bugs') addition
5
...................
_ 47 Grease or 00 Separators - Gravity .......... 2
to enhance organic compound removal . - .. .
Mechanical .......... 3
Dissolved Air Flotation. d
UjPrecworination .............................. 5
A Nitrogenous Stage
W
Aeration - High Purity Oxygen System .....
20
Diffused Air System ...........
10
Mechanical Air System (fixed,
floating, or rotor) . ... .....
8
Separate Sludge Reaeratibn .....
3
(i)
Trickling Filler -
High Rate ..............
7
Standard Rate ............
5
Packed Tower............
5
(iii)
Biological Aerated Filler or Aerated
Biological Filler .........................
10
Civ)
Rotating Biological Contactors ............
1 D
(v)
Sand Filler -
intermittent biological ........
2
recirculating biological ........
3
(vi)
Clarifier ........................... . ....
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)
Elecurdialysis ........ - ............:.......
5
(9
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)
.
,Z47 on agriculturally managed sites (See del -
No. ...... ...................
10
(iij by high rate infiltration on non -agriculturally
managed sites (includes rotary distributors
and similar fixed nozzle systems) ...........
4
(fri) by subsurface disposal (includes low pressure
pipe systems and gravity systems except at
plants consisting of septic tank and,nitrifica-
tlon Ernes only) .............................
4
()
W=screens ...................... ......
•Biological
5
(j)
Phosphorus Removal by Proses
(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 Fillers -low rate ........... 2
• hgh rate .......... 5
(o) 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 ...............
1
Aerobic . .. » .........
Unheated .............
3
(b)
Sludge Stabll4ation (chemical or thermal) .......
5
(c)
Sludge Drying Beds - Gravity ... ..... . .....
2
Vacuum Assisted .......
5
(d)
Sludge Ekdriation .............................
5
(a)
Sludg• Conditioner (chemical w thermal) ........
5
Sludge Thickener (gravity) .. ..................
S
!
Dissolved Air Flotation Uni
(not applicable to a unit rates as (3) (i) .........
6
(h)
Sludge Gas Utilization (nduding gas storage) ....
2
(t) Sludge Holding Tank - Aerated ................ 5
Non -aerated ............ 2
G) Sludge Incinerator - (not including activated
Carbon regeneration) ..... 10
(k) Vacuum Filter, Centrifuge or Filter Press or other
similar dewalering devices ................. . .. 10
(8) SLUDGE DISPOSAL (including incinerated ash)
(a)Lagoons. .............................
(b) Land Application (surface and subsurface)
(see definition 22a)
-where the facility holds the land app. permit ...
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) DISINFECTION
(a) Chlorination ..............................
l
141
(b) Dechlorination ........................
(c) Ozone ... ...........................
5
(d) Radiation .............. ... ...
5
(10) CHEMICAL ADDITION SYSTEM (S) (See definition No. 9)
(not applicable to chemical additions rated as item
(3) 0). (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
(11) MISCELLANEOUS UNITS
(a)
Molding Ponds, Hokfing Tanks or Settling Ponds
for Organic or Toxic Materials including wastes
from mining operations containing nitrogen and/or
phosphorous compounds in amounts signif'rcanity
greater than is common for domestic wastewater ..........
4
(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
(d)
inherent in land application systems .......................................
Pumps. -- --
5�
—.&
(e)
Stand -By Power Supply---__--_...._-.
Thermal Pollution Control Device......--.....--........_....._...
(1)
TOTAL POINTS
CLASSIFICATION
Class 1 5 - 25 Points
toss It. _ 26- 50 Points
s u. 51- 65 Points
_ 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 IL
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`
111.