WQ0004494_Final Permit_19910319

4 is
State of North Carolina
Department of Environment, Health and Natural Resources
Division of Environmental Management
512 North Salisbury Street • Raleigh, North Carolina 27611
.lames G. Martin, Governor
William W. Cobey, Jr., Secretary
March 19, 1991
Mr. Frank G. Perry, President
Lee Brick & Tile Company, Inc.
Post Office Box 1027
Sanford, North Carolina 27330
George T. Everett, Ph.D.
Director
Subject: Permit No. WQ0004494
Lee Brick & Tile Company, Inc.
Remediation of Contaminated Soils
Lee County
Dear Mr. Perry:
In accordance with your application received December 11, 1990, we are forwarding
herewith Permit No. WQ0004494, dated March 19, 1991, to Lee Brick & Tile Company, Inc. for
the construction and operation of the subject contaminated soil remediation program.
This permit shall be effective from the date of issuance until February 29, 1996, 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 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 Mr. John
Seymour at 919/ 733-5053.
cc:
Lec County Health Department
Raleigh Regional. Office
Groundwater Section
Aqua Tech Environmental Consultants
Training & Certification Unit
Pollution Prevention Pays
P.O. Box 27687, Raleigh, North Carolina 27611--7687 Telephone [phone]
An Equal Opportunity Affirmative Action Employer

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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
Lee Brick & Tile Company, Incorporated
Lee County
FOR THE
construction and operation of a (virgin) petroleum contaminated soils disposal system consisting
of land application and treatment of tested (Class I and Class II) (virgin) petroleum contaminated
soils from multiple locations to a five (5) acre treatment and disposal area completely covered by a
five-foot compacted soil base, located near Highway 87 on property owned by Lee Brick & Tile
Company near the Company's manufacturing facility, the treatment and testing of the subject soils
until the soil's contamination levels are below detection limits (as defined by the Division of
F� Environmental Management's 'GUIDELINES FOR REMEDIATION OF SOIL
CONTAMINATED BY PETROLEUM'), and once acceptable contamination levels are achieved,
the land application of additional (virgin) petroleum contaminated soils to the approved site for
treatment, with no discharge of wastes to the surface waters, pursuant to the application received
December 11, 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 permit.
This permit shall be effective from the date of issuance until February 29, 1996, and shall be
subject to the following specified conditions and limitations:
I. PERF RMAN E STANDARDS
I. The Raleigh Regional Office, phone no. 9191733-2314, shall be notified at least
twenty-four (24) hours before 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 Pemiittee 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.
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. 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.
II. OPERATION AND MAINTENANCE REQUIREMENTS
1. The facilities shall be properly maintained and operated at all times.
2. Upon classification of the facility by the Certification Commission, the Permittee
shall employ a certified waste treatment plant operator to be in responsible charge of
the wastewater treatment facilities. The operator must hold a certificate of the type
and grade at least equivalent to the classification assigned to the wastewater
treatment facilities by the Certification Commission.
Adequate measures shall be taken to prevent surface runoff from carrying any
disposed material into any surface waters.
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.
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.
S. 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.
2

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).
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. MONITORINQ AND REPORTING REQUrREMENTS
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 Raleigh Regional Office telephone no.
919/ 733-2314, 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.
3. 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. 11798 - 11877, 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.
3

4_ For each source of contaminated soil, the following information must be submitted
to the Raleigh 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, Toxicity
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 Toxicity 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 Raleigh Regional Office.
IV. GROUNDWATER REQUIREMENTS
The remediation site shall have a liner of natural material at least five (5) feet in
thickness at all locations with a hydraulic conductivity of no greater than 1 x 10-6
centimeters per second when compacted. Following installation and inspection of
the liner and prior to remediation activities, certification of the liner's compliance
with hydraulic conductivity and thickness specifications must be provided to the
Division of Environmental Management, Groundwater Section, by the project
engineer.
2. The sediment basins which receive runoff from the remediation areas shall have a
liner of natural material at least one foo; in thickness at all locations with a hydraulic
conductivity of no greater than 1 x 10- centimeters per second.
3. The remediation areas and sediment basins shall be surrounded by a swale and
berm combination that will divert runoff from the remediation areas to the basins
and prevent sheet water flow from entering the remediation area.
4. No discharge shall occur from the sediment basins.
5. The Qompliance 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 remediation areas and sediment basins,
or 50 feet within the property boundary.
4

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.
6. The land application of soils contaminated with any products other than Class I or
Class II petroleum products is prohibited.
7. The maximum thickness of application shall not exceed four (4) inches for soils
contaminated with a Class I product and three (3) inches for soils contaminated with
Class II product.
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.
9. All buffer zones as prescribed in 15A NCAC 2H.0219 shall be observed.
10. Any groundwater quality monitoring as deemed necessary by the Division of
Environmental Management shall be provided.
11. 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 to determine the concentration of (1) Petroleum Fuel Hydrocarbons
(Method 3550) and (2) any Volatile Organic Aromatic (VOA) compounds present.
A copy of the laboratory results of the soil analysis will be submitted to the Raleigh
Regional Office, to the attention of the Regional Hydrogeological Supervisor,
within 30 days of sample collection.
V. INSPECTIONS
1. Adequate inspection, maintenance, and cleaning shall be provided by the Permittee
to insure proper operation of the subject facilities.
5

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 lag of
inspections shall be maintained by the Permittee for a period of three years from the
date of the inspection and shall be made available upon request to the Division of
Environmental Management or other permitting authority.
3. Any duly authorized officer, employee, or representative of the Division of
Environmental Management may, upon presentation of credentials, enter and
inspect any property, premises or place on or related to the disposal site and facility
at any reasonable time for the purpose of determining compliance with this permit;
may inspect or copy any records that must be kept under the terms and conditions
of this permit, or may obtain samples of groundwater, surface water, or leachate.
VI. GENERAL CONDITIONS
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.
3. This permit is not transferable. In the event there is a desire for the facilities to
change ownership, or there is a name change of the Permittee, a formal 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).
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.
9. The Permittee, 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.
6

Permit issued this the 19th day of March, 1991
CAROLINA ENV RQNMENTAL MANAGEMENT COMMISSION
George T. Ever , Directo
Division of Enviro a gement
By Authority of the Environ ental Management Commission
Permit No. WQ0004494
11

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/ MAUAUS
INVESTMENTS

(4)
(5)
(6)
I7EM
POINTS
(h)
Preaeration or Equalization . . . . . .
1
(f)
Grease or Oil Separators -- Gravity . . . . . . . .
2
Land Application (see definition No. 23b)
Mechanical. . . . . . .
J
Aerated . . . . . . . .
5
(j)
Chemical Conditioning . . . . . . . . . . . . . . .
5
PRIMARY TREATMENT UNITS
(a)
Septic Tank (see definition No. 44) . . . . . . . .
2
(b)
Imhoff Tank . . . . . . . . . . . . . . . . .
3
(c)
Primary Clarifiers (including sludge air lifts)
5
d)
Settling Pouds or Settling Tanks for Inorganic Non -
(m)
Toxic Materials Involving a Discharge to the Surface
0
waters (sand, gravel, stone, and other minirig operations
Diffused or Mechanical . . .
except recreational activities such as gem or gold
(n)
mining) . . . . . . . . . . . . . . . . . . . . . ..
10
SECONDARY TREATMENT UNITS
(o)
(a)
Carbonaceous Stage
(p)
(i) Aeration - High Purity Oxygen System . . . .
20
Diffused Air System . . . . . . . . . . .
11)
5
Mechanical Air System (fixed, floating or rotor) S
SLUDGE TREATMENT
Separate Sludge Reaeration
3
(a)
(€i) Trickling riper - Itfgh -Rate
7
Standard Rate . . . . . .
5
5
Packed Tower . . . . . . .
5
Unheated . . . . . . .
(M) ) Aera ted Lagoons . . . . . . . . . . . . . .
10
(b)
(iv) Rotating Biological Contactors (biodisc). . .
10
(v) Sand Filters (intermittent biological) . . .
2
2
(vi Stabilization Lagoons
5
Sludge Elutriation . . _ . .
(vii Clarifier (including sludge air lifts). . . .
5
(b)
Nitrogenous Stage
(i) Aeration - High Purity Oxygen System.
20
2
Diffused Air Systems.10
(g)
Sludge Gas Utilization (including gas storage). . .
xe
Mechanical Air System {fid, floating, pr rotor)$
Separate Sludge Reaeration . . . . . . . . .
3
5
(ii) Trickling Filter - High Rate . _ . . . . . .
7
Non-aerated . . . . . .
Standard Rate . . . . . .
5
(i)
Packed Tower. . . . .
5
.(iii)
Rotating. Biological Contactors (biodisc)
10
10
(iv) Sand Filter (intermittent biological)_
2
Vacuum Filter, Centrifuge or Filter Press . . . .
(v) Clarifier (including sludge air lifts)
5
TERTIARY OR AOYANCEO TREATMENT UNITS
(a)
Activated Carbon Beds - Without Carbon regeneration
5
2
With Carbon regeneration.
I5
(b)
Powdered or Granular Activated Carbon Feed - Without
Carbon regeneration
5
With Carbon regeneration.
15
(c)
Armnia Stripping . . . . . . . . . . . . . . .
18
(d)
Chemical Additions . . . . . . . . . .
5
(e)
Denitrification Process (separate process). , . .
10
(f)
Electrodialysis . . . . . . . . . . . . . . . . .
5
(g)
Foam Separation . . . . . . . . . . . . . . .
5
(h)
Ion Exchange . . . . . . . . . . . . . . . . . . .
5
-2-
Sim
ITEM
POIHTS
(i)
Land Application (see definition No. 23b)
5
(not applicable for facilities under 10{a) .
{ j )
Mi croscreens . _ . . . . . . . _ . . .. . . _
5
(k)
Phosphorus Removal . . . . . . . . _ . .
20
(1)
Polishing Ponds- Without aeration . . . . . . . .
2
With aeration . . . . . . . . . .
5
(m)
Post Aeration - Cascade
0
Diffused or Mechanical . . .
5
(n)
Pre -Package Unit for Removal of Oil and Grease
30
(o)
Reverse Osmosis . . . . . . . . . . . . . . ..
5
(p)
Sand or Mixed -Media Filters -- Low Rate . . . . ..
2
High Rate . . . ..
5
(1)
SLUDGE TREATMENT
(a)
Sludge Digestion Tank -- Heated . . . . _ . . . . .
10
Aerobic . _ . . . . . . .
5
Unheated . . . . . . .
3
(b)
Sludge Stabilization (chemical or thermal) . .
10
(c)
Sludge Drying Reds . . . . . . . . . . . . . . . .
2
(d)
Sludge Elutriation . . _ . .
5
�r.}
Sludge Conditioner (chemical or thermal)
f }
51 urlge Th l ckener . . . . . . .
2
(g)
Sludge Gas Utilization (including gas storage). . .
2
(h)
Sludge Holding Tank -- Aerated .
5
Non-aerated . . . . . .
2
(i)
Sludge Incinerator (not including activated carbon
regeneration) . . . . . . . .
10
(j)
Vacuum Filter, Centrifuge or Filter Press . . . .
10
(B)
SLUDGE DISPOSAL (including incinerated ash)
(a)
Lagoons . . . . . . . . . . . . . . . . .
2
(b)
Land Application (surface and subsurface) -(see def.
23a) . . . . . . . . . . . . .
(c)
Landfilled (burial) _ . . . . .
(9)
DISINFECTION
. . . .
NPre
. . . . .
1
Intermediate . . . . . . . . . . . . . . . . .
2
(c)
Post . . . . . . . . . . . . .
3
(d)
Dechlorination . . . . . . . . . . . . . . .
5
(e)
Chlorine or Ozone Generation . . . . . . . . . .
5
(f)
Radiation . . . . . . . . . . . . . . . . ,
3
(10)
MISCELLANEOUS
UNITS
(a)
Holding Ponds or Holding Tanks for Inorganic, Non-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 Ho. 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).
Sim

(MISCELLANEOUS UNITS CONTINUED) POINTS
(c) Holding Pond for Effluent Flow Equalization and/or
Stage Discharge . . . . . . . . . . . . . . . . . . 5
(d) Effluent Pumps . . . . . . . - . . . . . . . 3
e) In -Plant Pumps (including air lifts). 2
(f) Stand -By Power Supply . . . . . . . . . . . . . . . 3
g Thermal Pollution Control Device . . 3
(h) Treatment Processes for Removal of Metal or Cyanide and
other Toxic Materials . . . . . . . . . . 30
Total Points id
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.
-4-
North Carolina
Oivislon of Environmental Management
Checklist of Facility Components
To be Used In Determing Facility Classification
All information will be printed:
County [_-a e
Owner or Contact Person 'Fr-ftf�
e
p .((� r Te
&
Mailing Address P,O, r IG27 Sq f rc .2 zo
—street or P.Q. Box No. Town artL y zip
Permit Number Information
Construction Status
NPDE5 Permit No. Please Check:
Existing Facility
Date Issued Upgraded Facility
New Facility
State Permit No. If Upgraded or New Facility, Gime:
50% Completion Date
Date Issued _ A d rC 6 1-5 , I9 � I IQO% Completion Cate
Rated by T. pulr Regional Office Cfji &,i I Cate
Operator in Responsible Charge Grade _
Design Flow of Plant in GPD
ITEM
ant Class___
POINTS
(1)
CLASSIFICATION
ass I
. . . . . . . . . . . . . . . 5 25 Points
ass I
. . . . . . . . . . . . . . . 26 "- 50 Points
Class III
.. . . . . . . . . . . . . 51 - 65 Points
Class IV
. . . . . . . . . . . . . . . b6 - 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.
-4-
North Carolina
Oivislon of Environmental Management
Checklist of Facility Components
To be Used In Determing Facility Classification
All information will be printed:
County [_-a e
Owner or Contact Person 'Fr-ftf�
e
p .((� r Te
&
Mailing Address P,O, r IG27 Sq f rc .2 zo
—street or P.Q. Box No. Town artL y zip
Permit Number Information
Construction Status
NPDE5 Permit No. Please Check:
Existing Facility
Date Issued Upgraded Facility
New Facility
State Permit No. If Upgraded or New Facility, Gime:
50% Completion Date
Date Issued _ A d rC 6 1-5 , I9 � I IQO% Completion Cate
Rated by T. pulr Regional Office Cfji &,i I Cate
Operator in Responsible Charge Grade _
Design Flow of Plant in GPD
ITEM
ant Class___
POINTS
(1)
11RIJ11L'AIMENT UNITS (sec definition No. 34) . . . . . . . . 2
(2)
DESIGN FLOW OF PLANT IN GPD (not applicable to non -
contaminated cooling Haters and non -discharging systems
0 -- 20,000 . . . . . . . . . . . . . . . . . . I
20,001 -- 50,000 . . . . . . . . . . . . . . . . . . 2
50,001 -- 100,000 . . . . . . . . . . . . . . . . . 3
100,001 -- 250,000 . . . . . . . . . . . . . . . . . . b
250,001 -- 500,000 . . . . . . . . . . . . . . . . . 5
500,001 -- 1,000,OOG . . . . . . . . . . . . . . . . . a
11000,001 -- 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):
(3)
PRELIMINARY UNITS (sue de n�tton Na. 3
(a) Influent Pumps (including air lift) . . . . . . . . . 3
(b) Dar Screens . . . . . . . . . . . . . . . . . . . . . 1
or
(c) Mechanical Screens, Static Screens or Comminuting
Devices . . . . . . . . . . . . . . . . . . . 2
(d) Grit Removal or . . . . . . . . . . 1
(e) Mechanical or Aerated Grit Removal . . . . . . . . . 2
(f) Flow Measuring Device or . . . . . . . . . . . . . .I
(g) instrumented Flow Measurement . . . . . . . . . . . . 2
Effective
4/1187 -1-