WQ0004202_Final Permit_19910115

State of North Carolina
Department of Environment, Health and Natural Resources
Division of Environmental Management
512 North Salisbury Street • Raleigh, North Carolina 27611
Jaynes G. Martin, Governor
William W. Cobey, Jr., Secretary
Mr. J. Tildon Whitehurst Sr.
Environmental Soil Services, Inc.
Route 4, Box 870
Hertford, North Carolina 27944
Dear 1•[r. Whitehurst:
George T. Everett, Ph.D.
Director
January 15, 1991
Subject: Permit No. WQ0004202
Environmental Soil Services, Inc.
Land Disposal of Virgin Petroleum
Contaminated Soils at Dedicated Site
Perquimans County
In accordance with your application received September 28, 1990, we are forwarding
herewith Permit No. WQ0004202, dated January 15, 1991, to Environmental Soil Services, Inc.
for the operation of the subject virgin petroleum contaminated soil disposal program.
This permit shall be effective from the date of issuance until December 31, 1995, and shall
be subject to the conditions and limitations as specified therein.
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 pern-lit. 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. Box 11666, Raleigh, NC 27604. Unless such demands are made this permit shall
be final and binding.
One set of approved plans and specifications is being forwarded to you. If you need
additional information concerning this matter, please contact Mr. John Seymour at 919/ 733-5083.
Sin rely,
George T. erett
cc: Perquimans County Health Departme
Washington Regional Office
Groundwater Section
Applied Environmental Services, Inc.
Training & Certification. Unit
Pollution Prevention Pays
P.O. Box 27687, Raleigh, Norh Carolina 27611-7687 Telephone [phone]
An Equal Opportunity Affirmative Action Employer

NORTH CAROLINA
ENVIRONMENTAL MANAGEMENT COMMISSION
DEPARTMENT OF ENVIRONMENT, HEALTH AND NATURAL RESOURCES
RALEIGH
CONTAMINATED SOILS DISPOSAL 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
Environmental Soil Services, Inc.
Perquimans County
operation of a virgin petroleum contaminated soils disposal system consisting of treatment and
disposal of tested virgin petroleum contaminated soil from sources approved by the Division of
Environmental Management to a 20 acre disposal area located in the south east corner of US 17
and NCSR 1367 in Perquimans County with no discharge of wastes to the surface waters,
pursuant to the application received September 28, 1990 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 pemoit.
This permit shall be effective from the date of issuance until December 31, 1995, and shall be
subject to the following specified conditions and limitations:
I. PERFORMANCE STANDARDS
1. The Washington Regional Office, phone no. 919/ 946-6481, shall be notified at
least twenty-four (24) hours after land application of the contaminated soil so that
an 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.
2. This permit shall become voidable if the soils fail to adequately assimilate 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.
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 the construction of additional or
replacement treatment or disposal facilities.

a,_;,
4. The issuance of this permit shall not relieve the Permittee of the1 responsibility for
damages to surface or groundwaters resulting from the operation of this facility.
5. 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.
6. No contaminated soil other than that approved in writing by the Division of
Environmental Management's Washington Regional Office shall be placed on the
land disposal site.
II. OPERATION AND MAINTENANCE REQUIREMENTS
1. The facilities shall be properly maintained and operated at all times.
2. 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 grade at least equivalent to the classification assigned to the
wastewater treatment facilities by the Certification Commission.
3_ Adequate measures shall be taken to prevent surface runoff from carrying any
disposed material into any surface waters or adjacent properties.
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. The site shall be adequately limed to a soil pH of at least 6.5 prior to disposal of the
contaminated soil. The contaminated soil and lime shall be thoroughly incorporated
into the top six to eight inches of the native soils by tilling or disking.
6. To ensure that sufficient oxygen is provided for waste biodegradation, the site shall
be retilled at periods of one month, two months, and every six months thereafter
following disposal. A covered tiller shall be used to control dust.
7. No food -chain crops shall be grown on the landfarming sites for at least two years
following the completion of contaminated soil application and remediation.
8. Nutrients, in the form of nitrogen and phosphorus fertilizers, must be applied over
the disposal area and fully incorporated into the mixed contaminated and native soil
layer. To provide maximum benefits, fertilization should occur no sooner than 15
days nor later than 30 days subsequent to disposal.
Rate of fertilizer application should be the lesser of the following:
a) For nitrogen, the tolerance level of the vegetative crop, as determined by a
knowledgeable party, or 75-100 pounds per acre plant available nitrogen
(PAN).
2

b) For phosphorus, the tolerance level of the vegetative crop, as determined by a
knowledgeable party, or 50-75 pounds per acre P2O5 (or equivalent).
III. MONITORING AND REPORTING RE UIREMENTS
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. Noncompliance Notification:
The Permittee shall report by telephone to the Washington, Regional Office
telephone no. 9191 946-6481, 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 discharge of wastes to
receiving waters.
c. Any time that self-monitoring information indicates that the facility is not in
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
contaminated soil 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.
IV. GROUNDWATER REQUIREMENTS
Activities authorized by this permit shall be conducted in compliance with the
"Criteria For Dis osal of Petroleum Fuel Contaminated Soils" Appendix B), in the
"Guidelines For Remediation of Soil Contaminated Bv Petroleum", NCDEHNR,
Division of Environmental Management, Groundwater Section, August, 1990.
2. The land application of soils contaminated with any products other than Class I or
Class II petroleum products is prohibited.
The subject land application site is covered in part by soils having a seasonal high
water table at depths up to 2 feet below land surface. Therefore, no waste shall be
applied to the field during the period form November though April, inclusive.

4. Soil samples will be collected, from a minimum of two (2) areas at the disposal site,
at intervals of six months and twelve months following disposal.
Each sample will be composed of the vertical column of soil, extending from land
surfaces to the maximum depth of waste incorporation, and collected by using a soil
auger, Shelby tube or split -spoon sampler.
Samples at each location will be thoroughly mixed and a representative portion
analyzed,(by methods specified in Guidelines For Remediation Of Soil
Contaminated By Petroleum available from the Division of Environmental
Management) to determine the concentration of: (1) Petroleum Fuel Hydrocarbons
(Method 3550) and (2) any Volatile Organic Aromatic (VOA) compounds present.
THE SAMPLES TAKEN AT DIFFERENT LOCATIONS SHALL NOT BE
MIXED TOGETHER TO GENERATE A SITE - WIDE COMPOSITE SAMPLE.
A copy of the laboratory results of the soil analysis will be submitted to the
Washington Regional Office, to the attention of the Regional Hydrogeological
Supervisor, within 30 days of sample collection.
5. There shall be no land application of soils contaminated by a petroleum fuel source
Not regulated under the Federal underground Storage Tank Rules (40 CFR Part
280), unless both both of the following stipulations have been met;
a) The contaminated soils have been tested in accordance with the toxicity
Characteristic Revision Rules as specified in March 29, 1990 Federal
Register (p. 11789 - 11977, and;
b) For any soil in which one or more constituents exceed the regulatory level
specified in (a), a written clearance is required form this Departments
Division of Solid Waste Management that the contaminated soil is not
subject to regulation by programs administered under their authority.
6. For each source of contaminated soil, the following information must be submitted
to the Washington Regional Office;
a) Source of contamination (facility, address, county, etc.),
b) Class and specific types of petroleum product. Completion of Certification
of Waste Constituents contained in the Guidelines For Remediation of Soil
Contaminated By Petroleum,
c) Estimated volume of contaminated soil from source,
d) Analysis for total petroleum hydrocarbons (TPH), additionally, Toxic
Characteristic Leaching Procedure analysis shall be conducted for heavy
metals for non -virgin petroleum contaminated soils,
e) Remaining capacity of dedicated site (in cubic yards), and
f) The results of a Toxic Characteristic Leaching Procedure Test (as specified
in the March 29, 1990 Federal register For Toxicity Characteristics
Revisions, p. 11798 - 11877) for all petroleum contaminated soils not
subject to the Underground Storage Tank Regulations (40 CFR par 280);
No sources of contaminated soils shall be land applied prior to receiving written
authorization from the Washington Regional Office.
M

7. Soils contaminated with Class I or Class II petroleum products shall not be applied
to an area which has previously received petroleum contaminated soils unless
analysis of soil samples taken from the site indicates that contaminant levels have
been reduced to below detection levels.
8. Records must be submitted to DEM after each soils application specifying the total
cumulative metals loading on the site and quantifying the constituents of the most
recently applied soils.
Total metals loading should be Initially limited to:
5lbs/ac Cd
125lbs/ac Cu
125lbs/ac Ni
250lbs/ac Zn
500lbs/ac Pb
9. Prior to beginning waste disposal operations, four (4) monitor wells, one (1)
upgradient and three (3) downgradient, shall be installed to monitor groundwater
quality. The well(s) shall be constructed such thaf the water level in the well is
never above or below the screened (open) portion of the well at any time during the
year. However, the exact location and construction details for these wells shall be
approved by the Washington Regional Office, from which a well construction
permit must be obtained.
10. The monitor wells must be sampled initially after construction (and prior to waste
disposal operations) and thereafter every February, June, and October for the
following parameters:
TDS (500:0) TOC
pH ( 6.5-8.5 standard units) Total Suspended Solids
Ammonia Nitrogen Lead (0.05)
Water Level .
Volatile Organic Compounds - ( by Method 1 or Method 2 below)
Method l: Method 6230D ( Capillary - Column), "Standard Methods for the
Examination of Water and Wastewater", 17th edition, 1989
Method 2: Method 502.2 " Methods for the Determination of Organic Compounds
in Drinking Water", United States Environmental Protection Agency - 600/4-88/039
The measurement of water level must be made prior to sampling for the remaining
parameters.
The 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 the 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
L-roundwater for the various analytical parameters, as specified in 15 NCAC 2L
[Groundwater Classifications and Standards]. Unless otherwise noted, the
concentrations are given in parts per million.
N

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 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 Aviarch, July, and November.
11. 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 143-215.6(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 Boundary.
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 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 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.
12. 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.
13. Any groundwater quality monitoring as deemed necessary by the Division of
Environmental Management shall be provided.
6

V. INSPECTIONS
0 it
1. Adequate inspection, maintenance, and cleaning shall be provided by the Permittee
to insure proper operation of the subject facilities.
2. The Permittee or designee shall inspect the contaminated soil area to prevent any
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.
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 groundwate)r, surface water, or leachate.
VI. GENERAL CONDITIONS
This permit shall become voidable unless the contaminated soil is disposed of in
accordance with the conditions of this permit and the approved documents.
2. This permit is effective only with respect to the nature and volume of wastes
described in the application and other supporting data.
This permit is not transferable. In the event there is a desire for the facilities to
change ownership, or there is a name change of the Permittee, a formal permit
request must be submitted to the Division of Environmental Management
accompanied by an application fee, documentation from the parties involved, and
other supporting materials as may be appropriate. The approval of this request will
be considered on its merits and may or may not be approved.
4. In any future transfer of this land, a notice shall be given to the new owner that
gives full details of the materials applied or incorporated at this site.
5. A set of approved documents for the subject project must be retained by the
applicant for the life of the project.
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 143-215.6.
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 revoke 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 -
7

2. The Permittee or designee shall inspect the contaminated soil area to prevent any
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.
Vl. GENERAL CONDITIONS
1. This permit shall become voidable unless the contaminated soil is disposed of in
accordance with the conditions of this permit and the approved documents.
2. This permit is effective only with respect to the nature and volume of wastes
described in the application and other supporting data.
This permit is not transferable. In the event there is a desire for the facilities to
change ownership, or there is a name change of the Permittee, a formal permit
request must be submitted to the Division of Environmental Management
accompanied by an application fee, documentation from the parties involved, and
other supporting materials as may be appropriate. The approval of this request will
be considered on its merits and may or may not be approved.
4. In any future transfer of this land, a notice shall be given to the new owner that
gives full details of the materials applied or incorporated at this site.
5. A set of approved documents for the subject project must be retained by the
applicant for the life of the project.
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 143-215.6,
7. The annual adnunistering 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),
S. 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.
7

9. The PenTuttee, at least six months prior to the expiration of this permit, shall request
its extension. Upon receipt of the request, the Commission will review the
adequacy of the facilities described therein, and if warranted, will extend the permit
for such period of time and under such conditions and limitations as it may deem
appropriate.
Permit issued this the 15th day of January, 1991
NORTH CAROLINA
George T. Evere(t, Direc
Division of Envir meat
/ By Authority of th
N.
AL MANAGEMENT COMMISSION
Management Commission

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(MISCELLANBOUS UNITS CONTINUED) POINTS
(c) Holding Pond for Effluent Flow Equalization and/or
Stage Discharge . . . . . . . . . . . . . . . . . . 5
I l dEffluent Pumps . . . . . . . . . . . . 3
e In -Plant Pumps (including air lifts). 2
f Stand -By Power Supply . . . . . . . . . . . . . . . 3
hThermal Pollution Control Device . . . . . . . 3
Treatment Processes for Removal of Metal or Cyanide and
;other Toxic Materials . . . . . . . . . . . . . . . 30
Total Points t -L1_
CLASSIFICATION
25 Po
Class li . . . . . . 26 - Points
Class III . . . . . . . . . . . . . . . 51 - 65 Points
Class IV . . . . . . . . . . . 65 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.
Horth Carolina
Division of Environmental Management
Checklist of Facility Components
To be Used In Determing Facility Classification
All information will be printed:
Name of Plant---n�/,y w iv pv���f l
SC✓J I Sf j Yi! E r P 1,7 -
County e�M^�� a10 aa.
--
Owner or Contact Person r,
contaminated cooling waters and non -discharging systems)
�a
Mailing Address SG.
�rr ,{{, �tTelephone
�7G ITC'u ]7tvp� .2 fi? Lf
St'
x No lown or Lity Zip
Permit Number Information
Construction Status
NPOES Permit No.
Please Check:
Existing Facility
Date Issued
Upgraded Facility
New Facility ��//'
State Permit No. '/�� 06C �fZGZ
If Upgraded or New4 ility, Gi4
f I L�
50% Completion Date
Date Issued S f,
100% Completion Date
Rated by S•eu rmc•o Regional
Office Date Ui
Operator in Responsible Charge
Grade
Design Flow of Plant in GPD
ITEM
nt Class
AL—
POINTS
1)
PRETREATMENT UNITS (see definition No. 34) . . . . . . . . 2
2)
DESIGN FLOWOF PLANT IN GPD (not applicable to non -
contaminated cooling waters and non -discharging systems)
0 -- 20,000 . . . . . . . . . . . . . . . . . . 1
2O,DO1 - 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�I point additional for each 200,000
GPO capacity up to a maximum of . . . 30
Design flow (GPD):
(3)
PRELIMINARY UNITS (see definition No. . . . . . . . ..
(a) Influent Pumps (including air lift) . . . . . . . . . 3
b Bar Screens 1
or
(c) Mechanical Screens, Static Screens or Comminuting
Devices, . . . . . . . . . . . . . . . . . . . . 2
4d) Grit Removal or. . . . . . . . . . 1
{e) Mechanical or Aerated Grit Removal . . . . . . . . . 2
(f Flow Measuring Device or 1
(g) Instrumented Flow Measurement . . . . . . . . . . . , 2
-4- Effective
7/1/83

(4)
(5)
(6)
ITEM
POINTS
(h)
Preaeration or Equalization . . . . . . . . . . . .
1
(i)
Grease or Oil Separators -- Gravity . . . . . .
2
Land Application (see definition No. 23b) . . . .i
Mechanical. . . . . . .
3
Aerated .
5
(j)
Chemical Conditioning . . . . . . . .
5
PRIMARY TREATMENT UNITS
k))
Septic Tank (see definition No. 44) . . . . . . . .
2
b
jai
Idmff Tank . .
3
c
Primary Clarifiers (including sludge air lifts) . .
5
d
Settling Poods or Settling Tanks for Inorganic Non -
(m)
Toxic Materials Involving a oischarge to the Surface
0
waters (sand, gravel, stone, and other mining operations
Diffused or Mechanical . . . .
5
except recreational activities such as gem or gold
Pre -Package Unit for Removal of Oil and Grease . .
mining) . . . . . . . . . . . . . . . . . . ..
10
SECONDARY TREATMENT UNITS
Reverse Osmosis . . . . . . . . . ..
(a)
Carbonaceous Stage
(p)
Sand or Mixed -Media Filters -- Low Rate . . . . . .
(i) Aeration - High Purity Oxygen System . . . .
20
Diffused Air System . . ... . . . . . .
10
(7)
Mechanical Air System (fixed, floating or rotor)
8
Separate Sludge Reaeration . . . . . . . . .
3
10
(ii) Trickling Filter - High Rate . . . . . . . .
7
.Aerobic . . . . . . . . .
Standard Rate . . . . . .
5
Packed Tower . . . . . . .
5
(iii
Aerated Lagoons . . . . . . . . . .
10
10
(iv Rotating Biological Contactors (biodisc).
10
Sludge Drying Beds . . . . . . . . . . . . . . . .
(v Sand Filters (intermittent biological) .
2
d)
(vi Stabilization Lagoons with Outlet to Stream
5
(vii
Clarifier (including sludge air lifts). . . .
5
(b)
Nitrogenous Stage
f)
Sludge Thickener . . . . . . . . . . . . .
(i) Aeration - High Purity Oxygen System.
20
g
Diffused Air Systems. . . . . . . .
10
Mechanical Air System (fixed, floating, or rotor)8
Sludge Holding Tank -- Aerated . . . . . . . . . .
5
Separate Sludge Reaeration . . . . . . . . .
3
Hon -aerated
(ii) Trickling Filter - High Rate . . . . . . . .
7
(i)
Standard Rate . . . . . .
5
Packed Tower. . .
5
(iii}
Rotating Biological Contactors (biodisc) . .
10
Vacuum Filter, Centrifuge or Filter Press . . . .
(iv Sand Filter (intermittent biological). .
2
SLUDGE DISPOSAL (including incinerated ash)
(v Clarifier (including sludge air lifts) . . .
5
TERTIARY
OR ADVANCED TREATMENT UNITS
2
(a)
Activated Carbon Beds - Without Carbon regeneration
5
With Carbon regeneration.
15
(b)
Powdered or Granular Activated Carbon Feed - Without
(c)
Carbon regeneration
5
(9)
With Carbon regeneration.
15
c
Aanonia Stripping . . . . . . . . . . . . . . . .
18
d
Cheoicai Additions5
e)
Denitrification Process (separate process). . . .
10
f)
Electrodialysis . . . . . . . . . . . . . . . . .
5
g)
Foam Separation . . . . . . . . . . . . . . . . .
5
(h)
Ion Exchange . . . . . . . . . . . . . . . . . . .
5
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ITEM
POINTS
7-
(i)
Land Application (see definition No. 23b) . . . .i
(not applicable for facilities under 10(a) .
J)
Microscreens . . . . . . . . . . . . .. . . . .
5
k))
Phosphorus Removal . . . . . . . . . . . . . .
20
1}
Polishing Ponds- Without aeration . . . . . . . .
2
With aeration . . . . . . . . . .
5
(m)
Post Aeration - Cascade . . . . . . .
0
Diffused or Mechanical . . . .
5
Pre -Package Unit for Removal of Oil and Grease . .
30
in)
0)
Reverse Osmosis . . . . . . . . . ..
5
(p)
Sand or Mixed -Media Filters -- Low Rate . . . . . .
2
High Rate . . . ..
5
(7)
SLUDGE TREATMENT
(a)
Sludge Digestion Tank -- Heated . . . . . . . . . .
10
.Aerobic . . . . . . . . .
5
Unheated . . . . . .
3
b)
Sludge Stabilization (chemical or thermal) . . . .
10
c)
Sludge Drying Beds . . . . . . . . . . . . . . . .
2
d)
Sludge Elutriation . . . . .
5
e)
Sludge Conditioner (chemical or thermal) . . . . .
5
f)
Sludge Thickener . . . . . . . . . . . . .
2
g
Sludge Gas Utilization (including gas storage). . .
2
h
Sludge Holding Tank -- Aerated . . . . . . . . . .
5
Hon -aerated
2
(i)
Sludge Incinerator (not including activated carbon
regeneration . . . . . . . .
10
(j)
Vacuum Filter, Centrifuge or Filter Press . . . .
10
(8)
SLUDGE DISPOSAL (including incinerated ash)
(a)
Lagoons . . . . . . . .
2
b
Land Application (surface and subsurface) (see def.
(c)
Landfilled (burial)3. . . . . . . . . . . .
(9)
DISINFECTION
aPre
.. . . . . . . . . . . . . I . . . . . . .
1
b
Intermediate . . . . . . . . . . . . . . . . . .
2.
(c)
Post . . . . .
3
d)
Dechlorination. . . . . . . . . . . . . . . . . .
5
Chlorine or Ozone Generation . . . . . . . . . .
5
#e)
f)
Radiation . . . . . . . . . . . . . . . . . . . .
3
(10)
MISCELLANEOUS UNITS
(a)
Holding Ponds or Holding Tanks for Inorganic, Hon -toxic
Materials with no Discharge to the Surface Waters
2
(Sludge handling facilities for water purification
plants, sand, gravel, crushed stone and other similar
operations --see definition No. 10)
(b)
Holding Ponds or Holding Tanks for Organic or Toxic
Materials with no Discharge to the surface Waters
4
(Any pump, valve, or other mechanical control subject
to failure creating a potential for bypass or discharge
from the holding ponds or tanks will necessitate a
minimum classification of Class I requiring a certified
operator).
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