WQ0007062_Final Permit_19930428

49a
State 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
April 28, 1993
Mr. John C. Murdock, III, Executive Director,
Water & Sewer Authority of Cabarrus County
Post Office Box 428
Concord, North Carolina 28025
Dear Mr. Murdock:
Jonathan B. Howes, Secretary
Subject: Permit No. WQ0007062
Water & Sewer Authority of Cabarrus
County
Rocky River Wastewater Treatment Plant
Land Application of Ash
Cabarrus County
In accordance with your application received October 2, 1992, we are forwarding herewith Permit
No. WQ0007062 dated April 28, 1993, to the Water & Sewer Authority of Cabarrus County for the
operation of a land application of ash program. This permit is being issued to land apply the volume of ash
that has been produced to date. Once the land application activities are completed, no additional ash is to be
applied.
This permit shall be effective from the date of issuance until March 31, 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 7041663-1699 919/571-4700 919/946-6481 9191395-3900 919/896-7007
Pollution Prevention Pays
P.O. Box 29535, Raleigh, North Carolina 27626-0535 Telephone [phone]
An Equal Opportunity Affirmative Action Employer

If you need additional information concerning this matter, please contact Mr. John Seymour at 919/
733-5083.
Sincerely,&,dj,
r
`r~C
A. Prest& Howard, Jr., P.E.
Director
cc: Cabarrus County Health Department
Black & Veatch
Mooresville Regional Office, Water Quality Section
Mooresville Regional Office, Groundwater Section
Jack Floyd, Groundwater Section Central Office
Training and Certification
Facilities Assessment Unit

NORTH CAROLINA
ENVIRONMENTAL MANAGEMENT COMMISSION
DEPARTMENT OF ENVIRONMENT, HEALTH AND NATURAL RESOURCES
1-110-9 31" 1 l
ASH 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
Wafer & Sewer Authority Cabarrus County
Cabarrus County
FOR THE
operation of a ash land application program consisting of the application of approximately 359 dry tons of
ash from the Rocky River Wastewater Treatment Plant wastewater treatment facility to approximately 42
acres of land in Cabarrus County over a period of 3.8 years with no discharge of wastes to the surface
waters, pursuant to the application received October 2, 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 March 31, 1997, and shall be subject
to the following specified conditions and limitations:
The Mooresville Regional Office, telephone number 704/ 663-1699 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 ash 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 Cabarrus 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.
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. In the event that the land application program is not operated satisfactorily, including the
creation of nuisance conditions, the Permittee shall cease applying to the sites and take any
immediate corrective actions, including the construction of additional or replacement
wastewater treatment or disposal facilities.
6. No crops for direct human consumption shall be raised on these sites for a period of 18
months following application.
7. Maximum slope for application shall be 10% for surface application and 18% for
subsurface applications.
8. The following buffer zones shall be maintained:
a) 400 feet from residences or places of public assembly under separate ownership for
surface application method; however, the buffer zone requirement may be reduced
to a minimum of 100 feet upon written consent of the owner and the appropriate
DEM regional office,
b) 200 feet from residences or places of public assembly under separate ownership for
injection method; however, the buffer zone requirement may be reduced to a
minimum of 100 feet upon written consent of the owner and the appropriate DEM
regional office,
c) 100 feet from "SA and SB" classified waters and public surface water supplies for
both methods,
d) 50 feet from "WS" classified waters and other streams, creeks, lakes, rivers, and
surface water drainage ways for injection method,
e) 100 feet from "WS" classified waters and other streams, creeks, lakes, rivers and
surface water drainage ways for surface application method,
f) 50 feet from property lines for both methods; however, this requirement may be
reduced upon written concurrence from the adjoining property owner and the
appropriate DEM regional office,
g) 50 feet from public right of ways for surface application methods,
h) 25 feet from public right of ways for subsurface disposal methods,
i) 10 feet from upslope interceptor drains and surface water diversions for both
methods,
j) 25 feet from downslope interceptor drains, surface water diversions, groundwater
drainage systems and surface drainage ditches for both methods.
9. A copy of this permit shall be kept at the land application site when ash is being applied
during the life of this permit. A spill prevention and control plan shall be kept in all
transport and application vehicles.
10. All ashes included in this permit must be stabilized by a process to significantly reduce
pathogens (as described in 40 CFR Part 257, Appendix II) prior to application or
incorporation. An evaluation of all sludges as specified in condition II 4 must be conducted
as to their ability to demonstrate compliance with this requirement. Upon request, a copy
of this report must be submitted to the Assistant Chief for Operations, Division of
Environmental Management, Water Quality Section, Operations Branch, PO Box 29535,
Raleigh, NC 27626-0535.
11. Specific application area boundaries shall be clearly marked on each site prior to and during
application.
12. No ash at any time shall be stored at any application site.
Fa

I . The facilities and disposal sites shall be properly maintained and operated at all times.
2. A suitable vegetative cover as listed in condition 113, shalI 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:
CrWp
PAN (Ib /acre/krl
Alfalfa
250
Blue Grass
220
Coastal Bermuda Grass
350
Corn (Silage & Grain)
200
Cotton
100
Fescue
250
Forest (Hardwood & Softwood)
75
Small Grain (Wheat, barley, milo, oats)
100
Sorghum
120
Soybeans
150
Sudex (Hay)
160
Sudex (Silage)
200
Timothy, Orchard, & Rye Grass
200
4. No materials other than the following are hereby approved for land application in
accordance with this permit:
Permit
Estimated
Source _ County Number ..
Volume (dry tons)
Rocky River Cabarus NCO036269
WWTP
359 (over 3.8 years)
Incinerator Ash
5. The lifetime heavy metal loadings shall not exceed the following for the corresponding
Cation Exchange Capacities (CEC):
Lifetime
Loadings (lbslacre)
Paramet
CMEC < 5
CEC 5 - 15
CEC > 15
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 8A, .0202. The ORC of the facility must visit each Class I facility at
least weekly and each Class 11, I11, and IV facility at least daily, excluding weekends and
holidays, and must properly manage and document daily operation and maintenance of the
facility and must comply with all other conditions of Title 15A, Chapter 8A, .0202.
3

7. Adequate procedures shall be provided to prevent surface runoff from carrying any
disposed or stored material into any surface waters.
8. Animals shall not be grazed on applied land within a 30-day period following the
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 ash will be plowed or disced within twenty-four (24) hours after
application on lands with no cover crop established.
10. For areas that are prone to flooding or within the 100-year flood elevation, ash may be
applied only during periods of dry weather. The ash 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 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 application area onto the adjacent property or into the surface
waters.
13. Ash 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 first 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 application. Ash 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.
1.1 i► ilMIN f : ZIM:�Yi►I""11 �I�lil l: 1u! VW
1. Any monitoring (including groundwater, surface water, ash, 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 ash
b) date of application
c) location of 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 ash applied in gallons/acre and dry tons/acre
i) annual and cumulative totals of dry tons/acre of ash, 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.
4

3. A representative annual soils analysis (Standard Soil Fertility Analysis) shall be conducted
of each site receiving ash 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
Leadl
Zinc
pH
Manganese
Cation Exchange Capacity
Sodium
Nickell
Cadmiuml
Copper
Calcium
1 Soils analysis for these parameters shall be conducted once prior to permit renewal on
soils from each site which has received ash during the permit cycle.
4. A quarterly ash 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, ash analysis will be required for each instance of land application.
The ash 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
IA-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
61

5 . All ash 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,
111 2, III 3, 11I 4, and III 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 Mooresville Regional Office, telephone
number 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 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 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 treatment.
e. Any spillage or discharge from a vehicle or piping system transporting ash 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. Ash shall be applied to the sites as a one time only application, with the existing ash being
spread over a 3.8 year period.
2. The Compliance Boundary delineated on the attached site map for the disposal system is
specified by regulations in 15 NCAC 2L, Classifications and Water Quality Standards. An
exceedance of Groundwater Quality Standards beyond the Compliance Boundary is subject
to penalty provisions applicable under General Statute 143-215.6(1)a.
0

For facilities permitted on or after December 30, 1983, the Compliance Boundary is
established at the lesser of 250 feet from the perimeter of the land application site, or 50 feet
within the property boundary.
Any sale or transfer of property which affects the location of the compliance boundary shall
be reported immediately to the Director. The permittee shall not transfer land within an
established compliance boundary unless the permittee has satisfied all the requirements of
15A NCAC 2L .107 (e and f).
The REVIEW BOUNDARY for the disposal system is specified by regulations in 15A
NCAC 2L, Groundwater Classifications and Standards. A REVIE-W BOUNDARY is
established around disposal systems midway between the Compliance Boundary and the
perimeter of the waste disposal area. When the concentration of any substance equals or
exceeds the maximum allowable concentration of that substance at the REVIEW
BOUNDARY, as determined by monitoring, the permittee shall either (i) demonstrate,
through predictive calculations or modeling, that natural site conditions, facility design and
operational controls will prevent a violation of standards at the Compliance Boundary; or,
(ii) submit a plan for the alteration of existing site conditions, facility design or operational
controls that will prevent a violation of standards at the Compliance Boundary, and
implement that plan upon its approval by the Director.
3. Any additional groundwater quality monitoring as deemed necessary by the Division of
Environmental Management shall be provided.
V . INSPECTIONS
The Permittee or his designee shall inspect the 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 Permittee 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.
V I. UENERAL CONDITIONS
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.
7

4. This permit shall become voidable unless the agreements between the Permittee and the
landowners/lessees are in full force and effect.
5. The following are approved sites for sludge application (see attached map(s)):
Site No. Owner/Lessee Application Areal acres
Rocky River Water & Sewer 42
WWTP Authority
Cabarrus County
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 Pcrmittee 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 15A NCAC 2H .0205
(c)(4).
8. The issuance of this permit does not preQlude 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 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.
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 28th day of April, 1993
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
&C'�L , aqf& Oc,,�LQ2 /�
A. Preston H ard, Jr., P.E., irector
Division of En ironmental Management
By Authority of the Environmental Management Commission
Permit No. WQ0007062

N
0
a

RATING SCALE FOR CLASSIFICATION OF FACILITIES
ITEM
(1)
(2)
(3)
Name of Plant: Rouk Ri✓erg WA17-P ef,we VC1X::11 sit
Owner or Contact Person: Xoh ,f c ,-d-rl�
Mailing Address. W,�P, c" fewf, C4,vv-cs e-wk __
ff Gx _ 2 �r . CQ 0 d /V l' . 2
County: r ts� Telephone:
NPDES Permit No_ NC00 Nondisc. Per. No. I.oGra7t76z _
Issue Date: o?Z?//" Expiration Date: a 1,� I q 7
Existing Facility New Facility 1/
Rated By: Date: o7/zg &
Reviewed (Train. & Cert.) Reg. Office
Reviewed (Train. & Cert.) Central Office
W
Plant Class: (circle one) 0
POINTS
Industrial Pretreatment -Units and/or
Industrial Pretreatment Program
(see definition No. 33)
4
DESIGN FLOW OF PLANT IN GPD
(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 - 20,000..........................
1
20,001 -- 50.000..........................
2
50,001 — 100,000..........................
3
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) :
PRELIMINARY UNITS (see definition no. 32)
(a) Bar Screens ................................ 1
r
(b) Mechanical Screens, Static Screens or
Comminuting Devices ........... ............. 2
(0) Grit Removal ............................... 1
or
(d) Mechanical or Aerated Grit Removal ........... 2
(e) Flow Measuring Device ....................... 1
or
(f) Instrumented Flow Measurement .............. 2
(g) Preaeration................................ 2
(h) Influent Flow•Equalizalion ................... 2
(i) Grease or Oil Separators - Gravity .......... 2
Mechanical ..... 3
Dissolved Air Flotation. a
Q) Prechlo6nalion ..................:........... 5
(4) PRIMARY TREATMENT UNITS
(a) Septic Tank (see definition no. 43) ...........
(b) Imholf Tank ..................................
(c) Primary Clarifiers .................. . ........ .
(d) Settling Ponds or Settling Tanks for Inorganic
Non -toxic Maleriats (sludge handling facilities
for water purification plants, sand, gravel,
stone, and other mining operations except
recreational activities such as gem or gold
2
5
5
Grade
� u �i � qP�J�• -s%v s✓j •e
fi C. p rl
II ill IV Total Points I�
(5) SECONDARY TREATMENT UNITS
(a) Carbonaceous Stage
(i)Aeration - High Purity Oxygen System .....
20
Diffused Air System ...........
10
Mechanical Air System (fixed,
floating or rotor) ..............
8
Separate Sludge Reaeration .....
3
(ii) Trickling Filter
High Rate ...................
7
Standard Rate ...............
5
Packed Tower ...............
5
Wi) Biological Aerated Filler or Aerated
Biological Filter ......................
10
(iv) Aeraled Lagoons ..................... .
10
(v) Rotating Biological Contaclors .......... 10
(0) Sand Fillers-
internittent biological _
recirculating biological .... .
(vii) Stabilization Lagoons ...................
(viii)Clzrilier ..............................
(ix) Single stage system for combined
carbonaceous removal of BOD and
nitrogenous removal by nitrilication
(see def. No. 12) (Points for this item
have to be in addition to items (5) (a)
() through (5) (a) (vi�i) .................
(x) Nutrient additions to enhance BOD
removal . .............................
(xi) Biological Culture ('Super Bugs') addition
to enhance organic compound removal .... .
(b) Nitrogenous Stage
(t) Aeration - High Purity Oxygen System .... .
Diffused Air System ...........
Mechanical Air System (fixed,
floating, or rotor) ...... ......
Separate Sludge Reaeration .... .
(ii) Trickling Filter -
High Rate ............. .
Standard Rate ........... .
Packed Tower............
(iii) Biological Aerated Filter or Aerated
Biologicat Filter ........................ .
(iv) Rolating Biological Conlaclors ............
(v) Sand Filter -
intermittent biological ....... .
recirculating biological ..... _ . .
(vi) Clarifier ................... . ........... .
2
3
5
8
5
5
20
10
8
3
7
5
5
10
10
2
3
5

w
(�: } TERI lARY 0R ADVANCED TREATMENT UNIT
{a}
Activated Carbons Beds -
,without carbon regeneration ..................
5
v4th carbon regeneration ....................
is
tb)
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)
Electrodalysis ............................. .
5
(f)
Foam Separation .............................
5
(g)
ton Exchange ................................
5
(h)
Land Application of Treated Effluent
(see delinilion no. 22b) (not applicable for
sand, gravel, %lone and other similar mining
operations)
(i) on agriculturally managed sites (See def.
No-4)................................
10
(R) by high rate infiltration on non -agriculturally
managed sites (includes rotary distributors
and simiiar fixed nozzle systems) ....... I ...
4
(iii) by subsurface disposal (includes low pressure
pipe systems and gravity systems except at
plants consisting of septic tank and nitrifica-
tionlines only) .............................
4
(i)
Microscreens.................................
5
(j)
Phosphorus Remo+al 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 FiIters - low rate ...........
2
high rate ..........
5
(o)
Treatment processes for removal of metal or
cyanide............................ .......
15
{p)
Treatment processes for removal of toxic
materials nlher than metal or cyanide .........
15
SLUDGE TREATMENT
(a)
Sludge Digestion Tank - Heated ...............
10
Aerobic ...............
5
Unhealed ...... .......
3
(b)
Sludge Stabilization (chemical or thermal) .... ...
5
(c)
Sludge Drying Beds - Gravity .................
2
Vacuum Assisled .......
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) @ ..... ...
8
(h)
Sludge Gas Utilization (including gas storage) ....
2
(i)
Sludge Holding Tank - Aerated ................
5
Non•aeraled ............
2
{i1
Sludge Incineralor - (not including activated
carbon regeneration) .....
10
(k)
Vacuum Filler, Centrifuge or Filler Press or other
similar dewalering devices .......... . ... . .....
10
(8) SLUDGE DISPOSAL (including incinerated ash)
(a)
Lagoons.......................................1
2
(b)
Land Application (surface and subsurface)
(see definition 22a)
-where the facility holds the land app, permit .
-by corntracling to a land application operator wh
holds the land application permit ......... . .....
2
-land application of sludge by a contractor who does
not hold the permit for the wastewaler treatment
facility where the sludge -is generated I ...... I .
10
(c)
Landlilled (burial) .............................
5
(9) DISINFECTION
(a)
Chlorination .............................
5
(b)
Dechlorinalion ........................
5
(c)
Ozone ..............................
5
(10) -CHEMICAL ADDITION SYSTEM (S) {See definition No. 9)
(not applicable to chemical additions rated as item
(3) 6). (5) (a) (xi), (6) (a), (6) (b), (7) (b), (7) (e),
(9) (a), (9) (b), or {9} (G) 5 points each: List:
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 andlor
phosphorous compounds in amounts significantly
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
inherent in land application systems ....................... _.............. 5
(d) Pumps......_ ................ 3
(e) Saand-By Power Supply.. __._.._ .... _. '...... .» ....... 3
(1) Thermal Pollution Controf Device'...__ ................................... 3
TOTAL POINTS _) U
CLASSIFICATION
5 - 25 Points
Class 11..._ ....,_........ _ 26- 50 Points
Class Ill_ _....._. ....»........... _T—_`. 51- 65 Points
Class TV_._.. _ ...._. _.._..__,.__—_ _ 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 fl.
Facilities having treatment processes for the removal of metal
or cyanide will be assigned a minimum classification of Class II.
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, shall not be subject to
rating.
ADDITIONAL COMMENTS: