HomeMy WebLinkAboutWQ0002648_Final Permit_19910821State of North Carolina
Department of Environment, Health and Natural Resources
Division of Environmental Management
512 North Salisbury Street • Raleigh, North Carolina 27626-0535
James G. Martin, Governor
William W. Cobey, Jr., Secretary
August 21, 1991
Mr, Darius Luck, Plant Manager
Luck's, Incorporated
Post Office Box 510
Seagrove, North Carolina 27341
George T. Everett, Ph.D,
Directo
Subject: Permit No. WQ0002648 Amendment
Luck's, Incorporated
Wastewater Treatment and Spray
Irrigation System
Randolph County
Dear Mr. Luck:
In accordance with your application received October 30, 1989, and your request for
permit amendment dated December 10, 1990, we are forwarding herewith Permit No.
WQ0002648, dated August 21, 1991, to Luck's, Incorporated for the continued operation of the
subject wastewater treatment and spray irrigation disposal system. The capacity of the wastewater
treatment system's holding pond has been changed from 350,000 gallons to 588,000 gallons.
This is based on Mr. Torn Anderson's October 22, 1990, memo, which reflects a September 1990
evaluation of the holding ponds capacity. The spray application rate has been changed to reflect the
application rates recomended in the August 6, 1991, soil scientist report, by Mr. Dennis I -
Osborne.
This permit shall be effective from the date of issuance until October 31, 1995, 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.
Issuance of this permit hereby voids Permit No. WQ0002648 issued November 30, 1990.
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. Box 11666, Raleigh, NC 27604. Unless such demands are made this permit shall
be final and binding.
Pollution Prevention Pays
P.O. Box 29535, Raleigh, North Carolina 27626-0535 Telephone 919-733-7015
An Equal Opportunity Affirmative Action Employer
If you need additional information concerning this matter, please contact John Seymour at
919/ 733-5083.
Sin rely,
George T. Evere
cc: Randolph County Health Department
Winston-Salem Regional Office
Groundwater Section
Training and Certification Unit
Facilities Assessment Unit
NORTH CAROLINA
ENVIRONMENTAL MANAGEMENT COMMISSION
DEPARTMENT OF ENVIRONMENT, HEALTH AND NATURAL RESOURCES
:: s"
SPRAY IRRIGATION SYSTEM PERMIT
In accordance with the provisions of Article 21 of Chapter 143, General Statutes of North
Carolina as amended, and other applicable Laws, Rules, and Regulations
PERMISSION IS HEREBY GRANTED TO
Luck's, Incorporated
Randolph County
FOR THE
continued operation of a 0.3 MGD wastewater treatment and spray irrigation disposal facility to
treat the combined sewage and industrial wastes, consisting of aerobic digestion and chlorination
facilities for domestic waste pretreatment; wastewater screening, grease removal and aerobic
digestion facilities for process waste pretreatment; a 588,000 gallon capacity holding pond to
collect the combined waste flow: and an automated spray irrigation system utilizing approximately
40 acres of woodland and grassland for the disposal of the treated wastewater to serve Luck's,
Incorporated, Seagrove Plant with no discharge of wastes to the surface waters, pursuant to the
application received October 30, 1989, and the request for permit amendment received dated
December 10, 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 October 31, 1995, and shall be
subject to the following specified conditions and limitations:
I. PERFORMANCE STANDARDS
l . The spray irrigation facilities shall be effectively maintained and operated at all times so
that there is no discharge to the surface waters, nor any contamination of ground waters
which will render them unsatisfactory for normal use. In the event that the facilities fail
to perform satisfactorily, including the creation of nuisance conditions or failure of the
irrigation area to adequately absorb the wastewater, the Permittee shall take such
immediate corrective action to correct the problem, including actions as may be required
by the Division of Environmental Management.
2, The issuance of this permit shall not relieve the Permittee of the responsibility for
damages to surface or groundwaters resulting from the operation of this facility.
3. The sludge generated from these treatment facilities must be disposed of in accordance
with General Statute 143-215.1 and in a manner approved by the North Carolina
Division of Environmental Management.
4. Diversion or bypassing of the untreated wastewater from the treatment facilities is
prohibited.
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. A suitable vegetative cover shall be maintained.
4. Irrigation shall not be performed during inclement weather or when the ground is in a
condition that will cause runoff.
5. Adequate measures shall be taken to prevent wastewater runoff from the spray field.
6. The facilities shall be effectively maintained and operated as a non. -discharge system to
prevent the discharge of any wastewater resulting from the operation of this facility.
7. The application rate shall not exceed:
a) 0.75 inches/ acre/ week, for the month of January
b) 0.0 inches/ acre/ week, for the month of December unless documented soil
conditions allow
c) an average weekly rate (inches/ acre/ week) which does not exceed the rate
calculated by the water balance total allowable irrigation per month, for the rest of
the year
Water balance referenced was prepared by Mr. Dennis J. Osbome in his August 6, 1991
report.
S. No type of wastewater other than that from Luck's, Incorporated Seagrove Plant shall be
sprayed onto the irrigation area.
9. No traffic or equipment shall be allowed on the disposal area except while installation
occurs or while normal maintenance is being performed
10. Public access to the land application sites shall be controlled during active site use. Such
controls may include the posting of signs showing the activities being conducted at each
site.
III. MONITORING AND RE.PQRTING REOUIREMENNJsS
Any monitoring (including groundwater, surface water, soil or plant tissue
analyses) deemed necessary by the Division of Environmental Management to
insure surface and ground water protection will be established and an acceptable
sampling reporting schedule shall be followed.
N
2. Adequate records shall be maintained by the Permittee tracking the amount of wastewater
disposed. These records shall include, but are not necessarily limited to the following
information:
a) date of irrigation,
b) volume of wastewater irrigated,
c) field irrigated,
d) length of time field is irrigated,
e) continuous weekly, monthly, and
for each field,
f) weather conditions, and
g) maintenance of cover crops.
year-to-date hydraulic (inches/acre) loadings
3. The effluent from the subject facilities shall be monitored by the Permince at the point
prior to irrigation every March, July and November for the following parameters:
Parameter
DS Magnesium
Fecal Coliform Calcium
pH Sodium Adsorption Ratio by Calculation
NH3 as N
4. Three copies of all operation and disposal records (as specified in condition III 2) and
all effluent monitoring data (as specified in condition RI 3) and any other data as may be
required shall be submitted on or before the last day of the following month to the
following address:
NC Division of Environmental Management
Water Quality Section
Facility Assessment Unit
PO Box 27687
Raleigh, NC 27611-7687
5. Noncompliance Notification:
The Permittee shall report by telephone to the Winston-Salem Regional Office,
telephone no. 919/ 896-7007, as soon as possible, but in no case more than 24 hours or
on the next working day following the occurrence or first knowledge of the occurrence
of any of the following:
a. Any occurrence at the wastewater treatment facility which results in the treatment of
significant amounts of wastes which are abnormal in quantity or characteristic, such
as the dumping of the contents of a sludge digester; the known passage of a slug of
hazardous substance through the facility; or any other unusual circumstances.
b. Any process unit failure, due to known or unknown reasons, that render the facility
incapable of adequate wastewater treatment such as mechanical or electrical failures
of pumps, aerators, compressors, etc.
c. Any failure of a pumping station, sewer line, or treatment facility resulting in a
by-pass directly to receiving waters without treatment of all or any portion of the
influent to such station or facility.
d. Any time that self -monitoring information indicates that the facility has gone out of
compliance with its permit limitations.
Persons reporting such occurrenpes by telephone shall also file a written report in letter
form within 15 days following is t 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
The three (3) existing monitor wells must be sampled every March, July, and
November for the following parameters:
NO2 Na
TDS (500.0) TOC
pH (6.5-8.5 standard units) Chloride (250.0)
Water level SO4 (250.0)
Volatile Organic Compounds - In November Only (By method. 1 or 2 below)
Method 1: Method 6230D (Capillary - Column), "Standard Methods For The
Examination of Water and Wastewater", 17th ed., 1989
Method 2: Method 502.2 "Method For The Determination Of Organic Compounds
In Drinking Water", U.S. EPA - 600/4-88/039
The measurement of water level must be made prior to sampling for the remaining
parameters.
The measuring points (top of well casing) of all new monitoring wells shall be
surveyed relative to mean sea level (M.S.L.). The depth of water in each well shall be
measured from the surveyed point on the top of the casing. The water level elevations
shall then be determined relative to M.S.L.
The numbers in parentheses represent the maximum allowable concentrations in
groundwater for the various analytical parameters, as specified in 15 NCAC 2L
[Groundwater Classifications and Standards]. Unless otherwise noted, the
concentrations are given in parts per million.
If TOC concentrations greater than 10 rng/l 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 analyses specified in the
monitoring requirements, including 604 and 611 if required, must be submitted
simultaneously.
The results of the sampling and analysis shall be sent to the N.C. Division of
Environmental Management on Form GW-59 (Compliance Monitoring Report Form)
every April, August, and December.
2. The Compliance Boundary for the disposal system is specified by regulations in 15 c
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 prior to December 30, 1983, the Compliance Boundary is
established at a distance of 500 feet from the spray irrigation field or the property
boundary, whichever is less.
For facilities permitted on or after December 30, 1983, the Compliance Boundary is
established at the lesser of 250 feet from the spray irrigation field 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.
3. The spray irrigation field shall be tested once every four (4) months for sodium content
and the results submitted to the Division's Winston-Salem Regional Office.
4. Any additional groundwater quality monitoring, as deemed necessary by the Division,
shall be provided.
V . INSPECTTQN5
1. Adequate inspection, maintenance, and cleaning shall be provided by the Permittee to
insure proper operation of the subject facilities.
2. The Permittee or his designee shall inspect the wastewater treatment and disposal
facilities to prevent malfunctions and deterioration, operator errors and discharges which
may cause or lead to the release of wastes to the environment, a threat to human health,
or a nuisance. The Permittee shall keep an inspection log or summary including at least
the date and time of inspection, observations made, and any maintenance, repairs, or
corrective actions taken by the Permittee. This log of inspections shall be maintained by
the Permittee 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.
E
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
This permit shall become voidable unless the facilities are constructed in accordance with
the conditions of this permit, the approved plans, specifications, and other supporting
data.
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. Failure to abide by the conditions and limitations contained in this permit may subject the
Permittee to an enforcement action by the Division of Environmental Management in
accordance with North Carolina General Statute 143-215.6.
5. The issuance of this permit does not preclude the Permittee from complying with any
and all statutes, rules, regulations, or ordinances which may be imposed by other
government agencies (local, state, and federal) which have jurisdiction.
6. Prior to any transfer of this land, a notice shall be given to the new owner that gives full
details of the materials applied at this site.
7. A set of approved plans and specifications for the subject project must be retained by the
Permittee for the life of the project.
8. The annual administering and compliance fee must be paid by the Permittee within thirty
days after being billed by the Division. Failure to pay the fee accordingly may cause the
Division to initiate action to revoke this permit as specified by 15 NCAC 2H .0205
(c)(4).
9. The Permittee, at least six (6) months prior to the expiration of this permit, shall request
its extension. Upon receipt of the request, the Commission will review the adequacy of
the facilities described therein, and if warranted, will extend the permit for such period
of time and under such conditions and limitations as it may deem appropriate.
10. Issuance of this permit hereby voids Permit No. WQ0002648 issued April 26, 1988.
Permit issued this the 21st day of August, 1991
CAROLINA
George T. Everett;
Division of Enviro
By Authority of the
AL MANAGEMENT COMMISSION
Management Conunission
6
b wy us T, 1 7 `i f
WATER BALANCE
Luck's
incorporated
Seagrove,
North Carolina
-----------------_----------------------------------------__------------------------_-_______------------------
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
POTENTIAL
TOTAL
ALLOWABLE
CHANGE IN
CUMULATIVE
MONTH
ET
DRAINAGE
RUNOFF
LOSS
PPT
IRRIGATION
STORAGE
STORAGE
--------------------------------------------------------------------------------------------------------------
L( 1 )+( 2 )+( 3 )
L( 4 )-( 5 )]
[Mean-( 6 )]
Jan.
0.93
5.00
.32 -
6.25
3.16
3.09
.06
8.02
Feb.
1.40
5.00
.44
6.04
4.36
2.48
1.47
9.49
Mar.
2.17
5.00
.20
7.37
2.06
5.31
-1.36
8.13
Apr.
3.30
5.00
.26
8.56
2.56
6.00
-2.05
6.08
May
4.34
5.00
.56
9.90
5.58
4.32
- .37
5.71
June
4.80
5.00
.54
10.34
5.44
4.90
- .95
4.76
Ju I y
4.65
5 _00
.35
10.00
3.51
6.49
--2 .54
2. 22
Aug.
4.03
5.00
.42
9.45
4.20
5.25
-1.30
.92
Sept.
3.30
5.00
.46
8.78
4.81
3.97
- .02
,90
Oct_
1.86
5.00
.22
7.08
2.23
4.85
- .90
-0-
Nov. .
1 .20
5 .00
.61
6.81
6.07
.74
3.21
3.21
Dec.
0.62
5.00
.80
6.42
0.03
-0-
3.95
7.16
TOTAL
52.01
47.40
x = 3.95
F-
. � •ram . • • • �• � , ,�. �-
\
jj�Jff i I •. I ra �� J. , '.:.'" i^ �\', .i: i ! is i _+ .
1.4
-5
.I
1�a ' %�' s�°I %i °•� l I ra n
ot
• ple 5 .; --•- Srf �J2 .\� / - �. --- _ 47�• ai�1 . � ,.'� C2m -- -
� J _ , - r/ r /J/ "�� Fairview •fl - _
:.� I -•'' 1',Ol;••f! ��__'tr' '�r!'/'', �QICa A'-1d �.
010
_ l 5 �a le
(MISCELLANEOUS UNITS CONTINUED) POINTS
(c) Holding Pond for Effluent Flow Equalization and/or
Stage Discharge . . . . . . . . . . . . . . . . . 5>
d Effluent Pumps . . . . . . . . . . . . . . .
c In -Plant Puwps (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 2-3
CLASS I FI CAT ION
gI
ass 1 • • • • • • . 5 - 25 Points
Class 11 . . . . . . . . . . . . . . . 26 - 50 Points
Class III . . . . . . . . . . . . . . . 51 - 65 Points
Class IY . . . . . . . . . . . . 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.
s—
-
L
�
4 C'
M�
-4-
till,
aa J1 n �.
-(J
?forth Caro) i na ,h
Division of Envirorvnental Kanagem nt '
Checklist of Facility Components
To be Used in Determing Facility Classification
All information will -be printed:
Name of Plant I, C_ S
County �10
Owner or Contact Person
Mailing Address 9 0 40
L
Al
Street or ox No. Imo br City Lip
Permit Number Information Construction Status
r -
NPUES Permit No. Please Check;
Existing Facility
Date Issued Upgraded Facility _
New Facility
State Permit No. VUGCIC'O Z6yg If Upgraded or Hew —Facility,
50% Caopletion Date
Date Issued 11Z 1005 Completion Date
Rated by I n r Regional Office - C Ph� fO _Date l
Operator in Responsible Charge Grade
Design Flow of Plant in GPD Plant Class
ITEM POINTS
�1} PRETREATMENT UNITS (see definition No. 34) 2
2) DESIGN FLOW OF PLANT IN GPD (not applicable to non -
contaminated cooling waters and non -discharging systems)
0 -- 211,000 . . . . . . . . . . . . . . . . . 1
20,001 -- 5G,000 . . . . . . . . . . . . . . 2
50,001 -- 100,000 . . . . . . . . . . . . . . . . . . 3
100,001 -- 250,000 . . . . . . . . . . . . . . . . . 4
250,001 -- 500,000 . . . . . . . . . . . . . . . 5
5D0,001 -- 1,000,000 . . . . . . . . . . . . . . . . . . B
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 maximcun of . . . 10
Design Flow (GPD):
(3) PRELIMINARY UNITS (set deflnition No. . . . . . . . ..
(a) Influent Pumps (including air lift) . . . . . . . . . 3
b Bar Screens I
or
(c) Mechanical Screens, Static Screens or Cominuting
Devices . . . . . . . . . . . . . . . . . . . . 2
d) Grit Removal or • • . • • • • . • 1
e) Mechanical or Aerated Grit Removal 2
f) Flow Measuring Device or . . . . . . . . . . . . . . 1
(g) Instrumented Flow Measurement . . . . . . . • • • . 2
Effective
7/1/83 1
(4)
(5)
(6)
ITEM
POINTS
hj Preaeration or Equalization . . . _ . . . . .
1
i} Grease or Oil Separators -- Gravity . . . . . .
(�3
Mechanical. . . . . . .
3
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 Ponds or Settling Tanks for Inorganic Nan -
Toxic Materials Involving a Discharge to the Surface
waters (sand, gravel, stone, and other mining operations
except recreational activities such as gem or gold
ni ni ng) . . . . . . . . . . . . . . . ..
10
SECONDARY TREATMENT UNITS
(a) Carbonaceous Stage
(i) Aeration - High Purity Oxygen System
Diffused Air System . . . .". . . . . .
D
Mechanical Air System (fixed, floating or rotor)
Separate Sludge Reaeration . . . . .
3
(it) Trickling Filter - High Rate . . . . . . . .
7
Standard Rate . . . . . .
5
Packed Tower . . . . . . .
5
(III) Aerated Lagoons . . . . . . . . . . . . .
10
(iv Rotating Biological Contactors (biodisc). . .
10
(v Sand Filters (intermittent biological) . . .
2
(vi Stabilization Lagoons with Outlet to Stream .
5
{vii Clarifier (including sludge air lifts). . . .
5
(b) Hitrogenous Stage
(1) Aeration - High Purity Oxygen System.
20
Diffused Air Systems. .
10
Mechanical Air System (fixed, floating, or rotor)8
separate Sludge Reaeration . . . . . . . . .
3
(it) Trickling Filter - High Rate . . . . . . . .
7
Standard Rate . . . . . .
5
Packed Tower. . .
5
(1i1) Rotating Biological Contactors (biodisc) . .
10
(iv Sand Filter (intermittent biological). . . .
2
(v Clarifier {including sludge air lifts) . . .
5
TERTIARY OR ADVANCED TREATMENT UNITS
(a) Activated Carbon Beds - Without Carbon regeneration
5
With Carbon regeneration.
15
(b) Powdered or Granular Activated Carbon Feed - Without
Carbon regeneration
5
With Carbon regeneration.
15
c) IV—nia Stripping . . . . . . . . . . . . . . . .
18
d Chemical Additions . . . . . . . . . . . . .
5
e Dent trification Process (separate process). . . .
10
fl Electrodialysis .
5
91 Foam Separation . . . . . . .
5
. . . .
e hJ Ion Exchange . . . . . . . . . . . . . . . . .
5
-2-
ITEM
POINTS
{i)
Land Application (see definition No. 23b) . . . . .
5i
(not applicable for facilities under 10(a) . . . ,
J)
Microscreens . . . . . . . . . . . . . . ...
5
k
Phosphorus Removal . . . . . . . . . . . . . . .
20
Polishing Ponds- Without aeration . . . . . . . .
2
With aeration . . . . . , , . . .
5
(m)
Post Aeration - Cascade . . . . . . . .
0
Diffused or Mechanical . . . .
5
(n)
Pre -Package Unit for Removal of 011 and Grease
30
(o)
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)
5ludge Drying Beds . . . . . . . . . . . . . . . .
2
dl
Sludge Elutriation . . . . . . . . . . . . . .
5
e
Sludge Conditioner (chemical or thermal) . . _ . .
5
f)
Sludge Thickener . . . . . . . . . . . . . . . . .
2
4
Sludge Gas Utilization (including gas storage), . .
2
h
Sludge Holding Tank -- Aerated . . . . . . . . . .
5
Nan -aerated . . . . . .
2
(i)
Sludge Incinerator (not includin 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.
23a ) . . . . . . . . . . . . .
10
(c)
Landfilled (burial) . . . . . . . . . . . . . . .
5
(9)
DISINFECTION
a
Pre . . . . . . . . . . . . . . . . . . . . . . .
I
b
Intermediate . . . . . . . . . . . . . . . . . .
2
c�
Past . . . . . . . . . . . . . . . . . . . . . .
('3)
d
Dechlorination. . . . . . . . . . . . . . .
5
e)
Chlorine or Ozone Generation . . . . . . . . . .
5
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 certifled
operator).
Ke