WQ0000889_Final Permit_19940413

State of North Carolina
Department of Environrpent,
Health and Natural Resources
Division of Environmental Management
James B. Hunt, Jr., Governor
Jonathan B. Howes, Secretary
A. Preston Howard, Jr., P.E., Director
Mr. W. A. Schimming,
Manager, Environmental Affairs
Texasgulf Incorporated
Post Office Box 48
Aurora, North Carolina 27806
Dear Mr. Schimming:
'Tpw
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IDEHNR
April 13, 1994
Subject: Permit No. WQ0000889
Texasgulf Incorporated -Amendment
Domestic Wastewater Treatment and
Collection Facilities
Beaufort County
In accordance with your request for permit amendment received February 10, 1994, outlining
corrections and modifications which need to be addressed, we are forwarding herewith Permit No.
WQ0000889 dated April 13, 1994, to Texasgulf, Incorporated for the continued operation of the subject
domestic wastewater treatment and collection facilities. This amendment modifies condition numbers H.2,
III.3, VI9 (deleted), and the narrative paragraph in the permit issued January 10, 1994, in accordance
with your request and recent negotiations with the Division's Permits and Engineering Staff.
This permit shall be effective from the date of issuance until December 31, 1998, 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. WQ0000889 issued January 10, 1994.
This permit amendment is associated with a request for an adjudicatory hearing by a formal written
petition filed with the Office of Administrative Hearings. A draft of this permit was forwarded and
determined to be acceptable to Texasgulf Incorporated as acknowledged in a March 31, 1994, letter to the
Division and an April 5, 1994, Notice of Withdrawal of Petition filed with the Office of Administrative
Hearings, by Mr. T. Carlton Younger, Jr., Attorney for Petitioner, Vice President, Law & Secretary, of
Texasgulf Incorporated. Therefore, this permit shall be final and binding.
If you need additional information concerning this matter, please contact Mr. John Seymour at 919/
733-5083.
cc: Beaufort County Health Department
Washington Regional Office, Water Quality
Washington Regional Office, Groundwater
Groundwater Section, Jack Floyd
Training and Certification Unit
Facilities Assessment Unit
P.O. Box 29535, Raleigh, North Carolina 27626-0535
An Equal Opportunity Affirmative Action Employer
Sincerely,
Preston oward, Jr., P.E.
Telephone [phone] FAX [phone]
50% recycled/ 10% post -consumer paper

NORTH CAROLINA
ENVIRONMENTAL MANAGEMENT COMMISSION
DEPARTMENT OF ENVIRONMENT, HEALTH AND NATURAL RESOURCES
RALEIGH
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
Texasgulf, Incorporated
Beaufort County
FOR THE
continued operation of thirty-nine (39) simplex pump stations each with an 18 gpm submersible grinder
pump and high water alarms, approximately 7,110 linear feet of 3-inch force main and approximately 354
linear feet of 2-inch force main, a 125 gpm pump station with dual submersible pumps and high water
alarms, approximately 3,171 linear feet of 4-inch force main, a 30,000 GPD dual train "anoxic/aerobic"
wastewater treatment facility which consists of a flow monitoring manhole, a 14,960 gallon equalization
tank with dual 21 gpm submersible grinder pumps, a flow splitter box, dual 3,750 gallon anoxic tanks,
dual 11,250 gallon aerobic tanks, two (2) 145 cfm blowers, dual 6,200 gallon clarifiers, a 5,000 gallon
aerobic digester, four (4) 6,200 gallon sludge holding tanks, dual five (5) foot diameter filters equipped
with a 5,000 gallon dosing tank with dual submersible 21 gpm pumps, a 15 cfm blower and a 5,000
gallon backwash holding tank with dual submersible 210 gpm pumps, dual disinfection options which will
include a ultraviolet disinfection system and a 632 gallon chlorine contact chamber with tablet chlorination,
a 3,441 gallon effluent dosing tank with three (3) 42 gpm suction pumps, approximately 459 linear of 2-
inch force main, three (3) effluent meters, three (3) 80 feet by 80 feet rapid infiltration fields and all
associated valves, pipes and appurtenances to serve Texasgulf, Incorporated with no discharge of wastes
to the surface waters, pursuant to the permit renewal request received October 8, 1993, and in conformity
with the project plan, specifications, and other supporting data subsequently filed and approved by the
Department of Environment, Health and Natural Resources and considered a part of this permit.
This permit shall be effective from the date of issuance until December 31, 1998, and shall be
subject to the following specified conditions and limitations:
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 grdundwaters 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.
5. The following buffers shall be maintained:
a) 400 feet between wetted area and any residence or places of public assembly under
separate ownership,
b) 150 feet between wetted area and property lines,
c) 100 feet between wetted area and wells,
d) 100 feet between wetted area and drainageways or surface water bodies,
e) 50 feet between wetted area and public right of ways,
f) 100 feet between wastewater treatment units and wells,
g) 50 feet between wastewater treatment units and property lines.
Some of the buffers specified above may not have been included in previous permits for
this waste treatment and disposal system. These buffers are not intended to prohibit or
prevent modifications, which are required by the Division, to improve performance of the
existing treatment facility. These buffers do, however, apply to modifications of the
treatment and disposal facilities which are for the purpose of increasing the flow thaf is
tributary to the facility. These buffers do apply to any expansion or modification of the
spray irrigation areas and apply in instances in which the sale of property would cause any
of the buffers now complied with, for the treatment and disposal facilities, to be violated.
The applicant is advised that any modifications to the existing facilities will require a permit
modification.
6. A usable green area shall be maintained for wastewater disposal. The green area shall have
the capability of accommodating the average daily flow of the facility being served without
exceeding the loading rates of the green area. A "green area", as defined in 15A NCAC 2H
.0404 (g)(7), is an area suitable for waste disposal, either in its natural state or which has
been modified by planting a vegetative cover of grasses or low growing shrubbery.
H. OPERATION—AND-MAI_NTENANCE_ 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 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 any grade to comply with the
conditions of Title 15A, Chapter SA, .0202. The ORC of the facility must visit each Class
I facility at least weekly and each Class II, III, and IV facility at least daily, excluding
weekends and holidays, and must properly manage and document daily operation and
maintenance of the facility and must comply with all other conditions of Title 15A, Chapter
8A, .0202.
3. Irrigation shall not be performed during inclement weather or when the ground is in a
condition that will cause runoff.
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4. Adequate meastres shall be taken to prevent wastewater runoff from the spray field.
5. 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.
6. The application rate shall not exceed 8 inches per day per rapid infiltration field.
7. No type of wastewater other than that from Texasgulf, Incorporated's domestic wastewater
treatment facilities shall be sprayed onto the irrigation area.
8. No traffic or equipment shall be allowed on the disposal area except while installation
occurs or while normal maintenance is being performed.
9. 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.
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.
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 year-to-date hydraulic (inches/acre) loadings for
each field,
f) weather conditions, and
g) maintenance of cover crops.
3. As an indicator of proper operation and maintenance, the facility shall produce an effluent
in compliance with the following limitations:
Parameter
Monthly Averagea
Daily Maximumb
Flow
30,000 GPD
BQD5
10 mg/1
15 mgll
NH3 as N
4 mg/1
6 mg/1
TSS
5 mg/I
10 mg/1
Fecal Coliform
200 per 100 ml
a Monthly average shall be the arithmetic mean of all samples collected during the
reporting period.
b Daily maximum shall be the maximum value of all samples collected during the reporting
period.
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The effluent from the subject facilities shall be monitored, by the Permittee, at the point
downstream of the disinfection unit and prior to the effluent dosing tank for the following
parameters:
Parameter
Flow
BODS (5-day, 20°C)
NH3 as N
TSS
Fecal Coliform
Residual Chlorine
NO3
TDS
TOC
Chloride
Sampling Point
Sampling Frequency
Type of Sample
Influent or Effluent
Continuous
Recording
Effluent
*2/Month
Grab
Effluent
*2/Month
Grab
Effluent
*2/Month
Grab
Effluent
*2/Month
Grab
Effluent
***Daily
Grab
Effluent
�`*Triannually
Grab
Effluent
**Triannually
Grab
Effluent
**Triannually
Grab
Effluent
**Triannually
Grab
The effluent pH shall not be less than 6.0 standard units nor greater than 9.0 standard
units.
The intensity of UV irradiation (UV dose)/Microwatt-seconds per square centimeter (uw-
Sec/cm2) shall be monitored Daily when the UV system is in use and shall have an average
Daily reading of at least 4.0.
* 2/Month sampling frequency only during the months of April through October. During
the remainder of the year, these parameters shall be monitored monthly.
Triannually sampling shall be conducted during March, July and November.
*** Monitoring required Daily, only when chlorination system is in use.
If Groundwater sampling indicates or predicts problems with compliance with of the
Groundwater Standards, this permit will be modified to include additional and/or more
restrictive limitations.
4. Three copies of all monitoring data, as specified in condition I113, shall be submitted on or
before of the last day of the month following sampling to the following address:
NC Division of Environmental Management
Water Quality Section
Facility Assessment Unit
Post Office Box 29535
Raleigh, N.C. 27626-0535
5. A record shall be maintained of all residuals removed from this facility. The record shall
include the name of the hauler, the permit authorizing the disposal or a letter from a
municipality agreeing to accept the residuals, the date the residuals were hauled, and the
volume of residuals removed.
6. NoncompIiance Notification:
The Permittee shall report by telephone to the Washington Regional Office, telephone no.
919/ 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:
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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 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. Monitor wells MW#1, MW#2, MW#3, MW#4, must be sampled every March, July, and
November for the following parameters:
NO3 TDS
TOC pH
Ammonia Nitrogen Chloride
Water Level Total Coliforms
Volatile Organic Compounds - In November only ( by Method 1 or Method 2
below)
Method 1: 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
2. The measurement of water level must be made prior to sampling for the remaining
parameters. The depth of water in each well shall be measured from the surveyed point on
the top of the casing.
3. 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.
4. If TOC concentrations greater than 10 mg/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/1, 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.
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5. 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
6. The results of the sampling and analysis shall be sent to the N.C. Division of
Environmental Management P.O. Box 29535 Raleigh, N.C. 27626-0535 on Form GW-59
(Compliance Monitoring Report Form) every April, August, and December.
7. The Compliance Boundary for the disposal system (see Attachment A) is specified by
regulations in 15 NCAC 2L, Groundwater Classifications and Standards.The Compliance
Boundary is established at either (1) 250 feet from the waste disposal area, or (2) 50 feet
within the property boundary, whichever is closest to the waste disposal area. An
exceedance of Groundwater Quality Standards beyond the Compliance Boundary is subject
to penalty provisions applicable under General Statute 143-215.6A (a)(1).
8. In accordance with 15A NCAC 2L, Groundwater Classifications and Standards. A
REVIEW BOUNDARY (see gttachment A) is established around disposal systems midway
between the Compliance Boundary and the perimeter of the waste disposal area. Any
exceedance of standards at the Review Boundary shall require remediation action on the
part of the permittee.
9. Any additional groundwater quality monitoring, as deemed necessary by the Division, shall
be provided.
V. PE
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.
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.
VT. QENERAL QQNDJ3:1QN5
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.
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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 143-215.6A to 143-215.6C.
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. A set of approved plans and specifications for the subject project must be retained by the
Permittee for the life of the project.
7. 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 revolve this permit as specified by 15 NCAC 2H .0205 (c)(4).
8. 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.
9. Issuance of this permit hereby voids Permit No. WQ0000889 issued January 10, 1994.
Permit issued this the 13th day of April, 1994
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
�A. Preston Howard; Jr., P.E., Director
Division of Environmental Management
By Authority of the Environmental Management Commission
Permit Number WQ0000889
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