WQ0022384_Final Permit_20090430

4*b
1
NCDENR
North Carolina Department of Environment and
s Division of Water Quality
Beverly Eaves Perdue Coleen H. Sullins
Governor Director
April 30, 2009
Mr. Charles M. Smithwick, Jr., District Manager
Contentnea Metropolitan Sewerage District
Post Office Box 477
Grifton, North Carolina 28530
Dear Mr. Smithwick:
Natural Resources
Dee Freeman
Secretary
SCANNED
DATE: ZZ it I T
Subject: Permit No. WQ0022384
Contentnea Metropolitan Sewerage District
Wastewater Surface Irrigation
Pitt County
In accordance with your permit renewal request received February 4, 2009, we are forwarding
herewith Permit No. WQ0022384, dated April 30, 2009, to the Contentnea Metropolitan Sewerage
District for the continued operation of the subject wastewater treatment and surface irrigation facilities.
This permit shall be effective from the date of issuance until March 3I, 2014, shall void Permit
No. WQ0022384 issued August 4, 2004, and shall be subject to the conditions and Iimitations as specified
lowtherein. 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.
Please note that on September 1, 2006 State Administrative Code 15A NCAC Subchapter 02T —
Waste not Discharged to Surface Water was adopted. This permit incorporates the requirement of these
rules- Remember to take the time to review this permit thoroughly, as some of the conditions
contained therein may have been added, changed, or deleted from those in previously issued permits.
If any parts, requirements, or limitations contained in this permit are unacceptable, you have the
right to request an adjudicatory hearing upon written request within thirty (30) days following receipt of
this permit. This request must be in the form of a written petition, conforming to Chapter 150B of the
North Carolina General Statutes, and filed with the Office of Administrative Hearings, 6714 Mail Service
Center, Raleigh, NC 27699-6714. Unless such demands are made this permit shall be final and binding.
AQUIFER PROTECTION SECTION
NW 1636 Mall Service Center, Raleigh, North Carolina 27699-1636
Location: 2728 Capital Boulevard, Raleigh, North Carelina 27604
Phone:[phone] FAX 1: 919-715.0588: FAX 2: 919-715-60481 Customer Service: 1-877-623-6748
Internet: www.nmaterauality.oro
An Equal Opportunely 1 Affrmative Action Erriooyer
Nor thCarolina
Naturally

Mr. Charles M. Smithwick, Jr.
April 30, 2009
Page 2 of 2
If you need additional information concerning this matter, please contact David Goodrich at (919)
715-6162 or [e-mail].
Sincerely,
�HSulhns
or Co en
cc: Pitt County Health Department
Washington Regional Office, Aquifer Protection Section
Ken Pohlig, P.E., CG & L, NCDWQ
Technical Assistance and Certification Unit
APS Central Files
LAU Files

NORTH CAROLINA
ENVIRONMENTAL MANAGEMENT COMMISSION
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
RALEIGH
SURFACE 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
Contentnea Metropolitan Sewerage District
Pitt County
FOR THE
continued operation of a 40,630 gallon per day (GPD) surface irrigation treatment and disposal facility at
the Contentnea Metropolitan Sewerage District wastewater treatment plant consisting of the following:
a 212 gpm vertical turbine irrigation pump mounted in the plant's existing post -aeration basin, a
propeller -type irrigation flow meter, approximately 3700 linear feet of 4-inch and 575 linear feet of 6-inch
PVC force main to feed a fixed -set sprinkler system for irrigation onto 3.36 acres of grass at the plant site,
and to feed a traveling gun irrigation system irrigation onto 13.18 acres of tall fescue grass to be
maintained in two fields on CMSD property north of the plant site, to serve the Contentnea MSD
Wastewater Treatment Plant, with no discharge of wastes to the surface waters, pursuant to the
application received February 4, 2009, and subsequent additional information received by the Division of
Water Quality (Division), and in conformity with the project plan, specifications, and other supporting
data subsequently filed and approved by the Department of Environment and Natural Resources and
considered a part of this permit.
This permit shall be effective from the date of issuance until March 31, 2014, shall void Permit No.
WQ0022384 issued August 4, 2004, and shall be subject to the following specified conditions and
limitations:
I. SCHEDULES [please review the entire permit for reporting, monitoring, and other on -going activities]
1. No later than six months prior to the expiration of this permit, the Permittee shall request renewal of
this permit on official Division forms. Upon receipt of the request, the Division will review the
adequacy of the facilities described therein, and if warranted, will renew the permit for such period of
time and under such conditions and limitations as it may deem appropriate. Please note that Rule 15A
NCAC 02T .0105(d) requires an updated site map to be submitted with the permit renewal
application.
WQ0022384 Version 2.0 Shell Version 090204 Pagel of 7

H. PERFORMANCE STANDARDS
The surface irrigation facilities shall be effectively maintained and operated at all times so that there
is no discharge to the surface waters, nor any contravention of groundwater or surface water
standards. In the event that the facilities fail to perform satisfactorily, including the creation of
nuisance conditions due to improper operation and maintenance, or failure of the irrigation area to
adequately assimilate the wastewater, the Permittee shall take immediate corrective actions including
those actions that may be required by the Division, such as the construction of additional or
replacement wastewater treatment and disposal facilities.
2. The issuance of this permit shall not relieve the Permittee of the responsibility for damages to ground
or surface waters resulting from the operation of this facility.
3. Effluent limitations shall not exceed those specified in Attachment A.
4. Application rate(s), whether hydraulic, nutrient, or other pollutant shall not exceed those specified in
Attachment B.
The compliance boundary for the disposal system is specified by rules in 15A NCAC 02L,
Groundwater Classifications and Standards. This disposal system was individually permitted on or
after December 30, 1983; therefore, the compliance boundary is established at either 250 feet from
the waste disposal area, or 50 feet within the property boundary, whichever is closest to the waste
disposal area. An exceedance of groundwater standards at or beyond the compliance boundary is
subject to remediation action according to 15A NCAC 02L .0106(d)(2) as well as enforcement
actions in accordance with North Carolina General Statute 143-215.6A through 143-215.6C.
6. The Permittee shall apply for a permit modification prior to any sale or transfer of property that
affects a compliance boundary to establish a new compliance boundary.
7. In accordance with 15A NCAC 02L .0107(d), no wells, other than monitoring wells, shall be
constructed within the compliance boundary except as provided by 15A NCAC 02L .0107(g).
8. The review boundary is established around the 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 action in accordance with 15A NCAC 02L .0106.
9. The facilities permitted herein must be constructed according to the following setbacks:
a. The setbacks for Irrigation sites shall be as follows (all distances in feet):
i. Any habitable residence or place of public assembly under separate ownership
ii. Any habitable residence or place of public assembly owned by the permittee:
iii. Any private or public water supply source:
iv. Surface waters or drainageways:
v. Groundwater lowering ditches:
vi. Surface water diversions:
vii. Any well with exception of monitoring wells:
viii.Any property line:
ix. Top of slope of embankments or cuts of two feet or more in vertical height:
x. Any water line from a disposal system:
xi. Subsurface groundwater lowering drainage systems:
xii. Any swimming pool:
xiii.Public right of way:
400
200
100
100
100
25
100
150
15
10
100
100
50
WQ0022384 Version 2.0 Shell Version 090204 Page 2 of 7

xiv. Nitrification field: 20
xv. Any building foundation or basement: 15
b. The setbacks for Treatment and storage units shall be as follows (all distances in feet):
i. Any habitable residence or place of public assembly under separate ownership: 100
ii. Any private or public water supply source: 100
iii. Surface waters: 50
iv. Any well with exception of monitoring wells: 100
v. Any property line: 50
III. OPERATION AND MAINTENANCE REQUIREMENTS
The facilities shall be properly maintained and operated at all times. 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. The Permittee shall maintain an Operation and
Maintenance Plan pursuant to 15A NCAC 02T .0507 including operational functions, maintenance
schedules, safety measures, and a spill response plan.
Upon classification of the wastewater treatment and irrigation facilities by the Water Pollution
Control System Operators Certification Commission (WPCSOCC), the Permittee shall designate and
employ a certified operator to be in responsible charge (ORC) and one or more certified operator(s) to
be back-up ORC(s) of the facilities in accordance with 15A NCAC 08G .0200. The ORC shall visit
the facilities in accordance with 15A NCAC 08G .0200 or as specified in this permit and shall comply
with all other conditions specified in these rules.
3. A suitable year round vegetative cover shall be maintained such that crop health is optimized, allows
for even distribution of effluent, and allows inspection of the irrigation system.
4. Adequate measures shall be taken to prevent wastewater ponding or runoff from the irrigation field.
5. Irrigation shall not be performed during inclement weather or when the ground is in a condition that
will cause ponding or runoff.
6. Waste application activities shall not occur when the vertical separation between depth of application
and the water table is at less than one (1) foot. Verification of the water table elevation can be
confirmed by water level readings obtained from the monitor well(s) near the site or auger boring(s),
which must be done within 24 hours, prior to application of wastewater. Any open borings must be
properly filled with native soil, prior to application, to decrease the chance of any waste
contaminating the ground water.
7. The vegetative cover crop cannot be used for direct human consumption.
8. An agronomic plan shall be developed which maximizes the assimilative capacity of the nutrients in
the wastewater through crop growth, crop harvesting, etc.
9. All waste application equipment must be tested and calibrated at least once per permit cycle. Records
of the calibration must be maintained for five years.
10. No type of wastewater other than that from the Contentnea Metropolitan Sewerage District's sewer
system shall be irrigated onto the irrigation area.
11. No traffic or equipment shall be allowed on the disposal area except while installation occurs or while
normal maintenance is being performed.
WQ0022384 Version 2.0
Shell Version 090204
Page 3 of 7

12. Public access to the land application sites shall be controlled during active site use. Such controls
must include the posting of signs showing the activities being conducted at each site.
13. The residuals generated from these treatment facilities must be disposed / utilized in accordance with
15A NCAC 02T .l 100. The Permittee shall maintain a residual management plan pursuant to 15A
NCAC 02T .0508.
14. Diversion or bypassing of the untreated wastewater from the treatment facilities is prohibited.
IV. MONITORING AND REPORTING REQUIREMENTS
Any monitoring (including groundwater, surface water, soil or plant tissue analyses) deemed
necessary by the Division to ensure surface and ground water protection will be established and an
acceptable sampling reporting schedule shall be followed.
2. All laboratory analyses for effluent, ground waters, or surface waters shall be made by a laboratory
certified by the Division for the required parameter(s) under 15A NCAC 02H .0800.
3. Flow through the treatment facility shall be continuously monitored and daily flow values shall be
reported on Form NDMR.
The Permittee shall install and maintain an appropriate flow measurement device consistent with
approved engineering and scientific practices to ensure the accuracy and reliability of flow
measurement. Flow measurement devices selected shall be capable of measuring flows with a
maximum deviation of less than 10 percent from true flow, accurately calibrated at a minimum of
once per year, and maintained to ensure that the accuracy of the measurements is consistent with the
accepted capability of that type of device. The Permittee shall keep records of flow measurement
device calibration on file for a period of at least three years. At a minimum, data to be included in
this documentation shall be:
a. Date of flow measurement device calibration,
b. Name of person performing calibration, and
c. Percent from true flow.
4. The effluent from the subject facilities shall be monitored by the Permittee at the frequency(ies) and
location(s) for the parameter(s) specified in Attachment A.
5. The Permittee tracking the amount of wastewater disposed shall maintain adequate records. 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. Continuous monthly and year-to-date loadings for any non -hydraulic parameter specifically
limited in Attachment B for each field,
g. Weather conditions, and
h. Maintenance of cover crops.
WQ0022384 Version 2.0 Shell Version 090204 Page 4 of 7

6. A record shall be maintained of all residuals removed from this facility. This record shall include the
name of the hauler, permit authorizing the disposal or a letter from a municipality agreeing to accept
the residuals, date the residuals were hauled, and volume of residuals removed.
7. A maintenance log shall be maintained at this facility including but not limited to the following items:
a. Daily sampling results of dissolved oxygen in the aeration basin and at the clarifier weir.
b. Visual observations of the plant and plant site.
c. Record of preventative maintenance (changing of filters, adjusting belt tensions, alarm testing,
diffuser inspections and cleanings, etc.).
d. Date of calibration of flow measurement device.
e. Date and results of power interruption testing on alternate power supply.
8. Monitor wells shall be sampled after construction and within 3 months prior to initiating waste
disposal operations. Monitor wells shall be sampled thereafter at the frequencies and for the
parameters specified in Attachment C. All mapping, well construction forms, well abandonment
forms, and monitoring data shall refer to the permit number and the well nomenclature as provided in
Attachment C and Figure 2.
9. Two (2) copies of the results of the sampling and analysis must be received on Form GW-59
(Groundwater Quality Monitoring: Compliance Report Form), along with attached copies of
laboratory analyses, by the Division of Water Quality, Information Processing Unit, 1617 Mail
Service Center, Raleigh, North Carolina 27699-1617 on or before the last working day of the month
following the sampling month. Form GW-59 shall include the number of this permit and the
appropriate well identification number. One Form GW-59a certification form shall be provided for
each set of sampling results submitted.
10. Three (3) copies of all monitoring data [as specified in Conditions IV. 3. and IV. 4.] on Form NDMR
for each PPI and three (3) copies of all operation and disposal records [as specified in Conditions IV.
5 and IV. 6.] on Form NDAR-1 for every field shall be submitted on or before the last day of the
following month. If no activities occurred during the monitoring month, monitoring reports are still
required documenting the absence of the activity. All information shall be submitted to the following
address:
Division of Water Quality
Information Processing Unit
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
11. An annual representative soils analysis (Standard Soil Fertility Analysis) shall be conducted on each
irrigation field and the results maintained on file by the Permittee for a minimum of five years. The
Standard Soil Fertility Analysis shall include, but is not necessarily limited to, the following
parameters:
Acidity
Manganese
Potassium
Calcium
Percent Humic Matter
Sodium
Copper
pH
Zinc
Magnesium
Base Saturation (by calculation)
Phosphorus
Cation Exchange Capacity
Exchangeable Sodium Percentage
WQ0022384 Version 2.0 Shell Version 090204 Page 5 of 7

12. Noncompliance Notification:
The Permittee shall report by telephone to the Washington Regional Office, telephone number (252)
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 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 including ponding in the irrigation field or runoff
from the irrigation fields.
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 disposal system resulting in a by-pass directly to receiving waters.
d. Any time that self -monitoring information indicates that the facility has gone out of compliance
with its permit limitations including, but not limited to, freeboard measurements, effluent
limitations, exceedances of groundwater standards, or overloading of any field.
For any emergency that requires immediate reporting (e.g., discharges to surface waters, imminent
failure of a storage structure, etc.) outside normal business hours must be reported to the Division's
Emergency Response personnel at telephone number [phone], [phone], or (919) 733-
3300. Persons reporting such occurrences by telephone shall also file a written report in letter form
within five (5) 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.
V. INSPECTIONS
1. Adequate inspection and maintenance shall be provided by the Permittee to ensure 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 five years from the date of the inspection and shall be
made available upon request to the Division or other permitting authority.
3. Any duly authorized officer, employee, or representative of the Division may, upon presentation of
credentials, enter and inspect any property, premises or place on or related to the disposal site or
facility at any reasonable time for the purpose of determining compliance with this permit; may
inspect or copy any records that must be maintained under the terms and conditions of this permit,
and may obtain samples of groundwater, surface water, or leachate.
VI. GENERAL CONDITIONS
1. Failure to abide by the conditions and limitations contained in this permit may subject the Permittee
to an enforcement action by the Division in accordance with North Carolina General Statute 143-
215.6A to 143-215.6C.
2. This permit shall become voidable unless the facilities are constructed in accordance with the
conditions of this permit, the approved plans and specifications, and other supporting data.
WQ0022384 Version 2.0 Shell Version 090204 Page 6 of 7

3. This permit is effective only with respect to the nature and volume of wastes described in the
application and other supporting data. No variances to applicable rules governing the construction
and / or operation of the permitted facilities are granted unless specifically requested and granted in
this permit.
4. The issuance of this permit does not exempt 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) that have jurisdiction. Of particular concern to the Division are applicable river buffer
rules in 15A NCAC 02B .0200, erosion and sedimentation control requirements in 15A NCAC
Chapter 4 and under the Division's General Permit NCGO10000, and any requirements pertaining to
wetlands under 15A NCAC 02B .0200 and 02H .0500.
5. 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 on official Division form(s),
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. The
Permittee of record shall remain fully responsible for compliance until a permit is issued to the new
owner.
6. The Permittee shall retain a set of approved plans and specifications for the life of the facilities
permitted herein.
7. The Permittee shall maintain this permit until all permitted facilities herein are properly closed or
permitted under another permit issued by the appropriate permitting authority.
The Permittee must pay the annual fee 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
pursuant to 15A NCAC 02T .0105(e).
9. This permit in no way negates, precludes, or invalidates the most recent reissuance of NPDES Permit
No. NCO033077, and the Permittee shall continue to comply with all conditions provided therein.
Permit issued this the 30th of April, 2009
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
Col H. Sullins, Director
Division of Water Quality
By Authority of the Environmental Management Commission
Permit Number WQ0022384
WQ0022384 Version 2.0 Shell Version 090204 Page 7 of 7

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ATTACHMENT A - LIMITATIONS AND MONITORING REQUIREMENTS
PPI 001— Contentnea Metropolitan Sewerage District
Permit Number: WQ0022384
Version: 2.0
EFFLUENT CHARACTERISTICS
EFFLUENT LIMITS
MONITORING REQUIREMENTS
Parameter Description - PCS Code
Monthly Average
Weekly Average
Daily Maximum
Measurement
Frequency
Sample
Type
Flow, in conduit or thru treatment plant — 50050
40,630
GPD
Continuous
Recorder
Nitrogen, Nitrate Total (as N) — 00620
4 X year
Composite
Solids, Total Dissolved— 180 Deg.C-70300
3 X year
Composite
Chloride (as Cl) -00940
3 X year
Composite
BOD, 5-Day (20 Deg.) — 00310
4 X Year
Composite
Nitrogen, Ammonia Total (as N) — 00610
4 X year
Composite
Solids, Total Suspended — 00530
4 X year
Composite
Nitrogen, Kjeldahl, Total (as N) — 00625
4 X year
Composite
Coliform, Fecal MF, M-FC Broth,44.5C — 31616
4 X year
Grab
pH — 00400
6.0 — 9.0
s. u. '
5 X week
Grab
1 Acceptable range for pH is 6.0 to 9.0 standard units.
3 X year — February, June and October; 4 X year — March, June, September and December.
There shall be no discharge of floating solids or visible foam in other than trace amounts.
WQ0022384 Version 2.0 Attachment A Page 1 of 1

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ATTACHMENT B - APPROVED LAND APPLICATION SITES AND LIMITATIONS
Permit Number: WQ0022384 Version: 2.0
Contentnea Metropolitan Sewerage District — Contentnea Metropolitan Sewerage District Spray Irrigation Disposal System
UTILIZATION AREA INFORMATION
APPLICATION LIMITATIONS
Net
Dominant
Hourly
yearly
Field/ Basin
Owner
County
Latitude
Longitude
Acreag
Soil Series
Parameter
Max
Max
Units
e
R
Gun Field # 1 (Southern)
Contentnea Metropolitan
Pitt
35021'55"
77024'50"
1.93
OcB — Ocilla loamy
01284 — Application Surface Irrigation
0.2
37.0
inches
Sewerage District
fine sand
Gun Field #2 (Northern)Sewerage
Contentnea Metropolitan
Pitt
o
35 22'00"
35021'S5"
1 1.25
AgB — Alaga loamy
01284 —Application Surface Irrigation
0.2
37.0
inches
District
sand
Northern Zone
Contentnea Metropolitan
Pitt
35021'35"
77024'55"
1.72
LaB — Lakeland sand
01284 — Application Surface Irrigation
0.2
17.4
inches
Sewerage District
Southern Zone
Contentnea Metropolitan
Pitt
35021'32"
77°24'55"
1.64
LaB — Lakeland sand
01284 — Application Surface Irrigation
0.2
17.4
inches
Sewerage District
Total
16.54
WQ0022384 Version 2.0 Attachment B Page I of I

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ATTACHMENT C — GROUNDWATER MONITORING AND LIMITATIONS
Monitoring wells: MW-17
Permit Number: WQ0022384 Version: 2.0
GROUNDWATER CHARACTERISTICS
GROUNDWATER STANDARDS
MONITORING REQUIREMENTS
Parameter Description - Parameter Code
Daily Minimum/Maximum
Frequency Measurement
Sample Type
Footnotes
Water level, distance from measuring point - 82546
3 X year
Calculated
a, b, c
pH — 00400
6.0 su
8.0 su
Grab
a, g
Chloride (as Cl) — 00940
250 mg/1
3 X year
Grab
a, g
Coliform, Fecal MF, M-FC Broth,44.5C - 31616
3 X year
Grab
a, g
Nitrogen, Ammonia Total (as N) — 00610
3 X year
Grab
a, g
Solids, Total Dissolved- 180 Deg.0 — 70300
500 mg/I
3 X year
Grab
a, g
Carbon, Total Organic (TOC) — 00680
3 X year
Grab
a, f, g
Nitrogen, Nitrate Total (as N) — 00620
10 mg/1
3 X year
Grab
a, g
Volatile Compounds, (GC/MS) — 78732
Annual
Grab
a, d, e, g
a. 3 X year monitoring shall be conducted in February, June & October; Annual monitoring shall be conducted every October.
b. The measurement of water levels shall be made prior to purging the wells. The depth to water in each well shall be measured from the surveyed point on the top of the casing. The measurement
of pH shall be made after purging and prior to sampling for the remaining parameters.
C. The measuring points (top of well casing) of all monitoring wells shall be surveyed to provide the relative elevation of the measuring point for each monitoring well. The measuring points (top
of casing) of all monitoring wells shall be surveyed relative to a common datum.
d. Volatile Organic Compounds (VOC) - In November only, analyze by one of the following methods:
I . Standard Method 6230D, PQL at 0.5 µg/L or less
2. Standard Method 62101), PQL at 0.5 µg/L or less
3. EPA Method 8021, Low Concentration, PQL at 0.5 µg/L or less
4. EPA Method 8260, Low Concentration, PQL at 0.5 µg/L or less
5. Another method with prior approval by the Aquifer Protection Section Chief
Any method used must meet the following qualifications:
a. A laboratory must be DWQ certified to run any method used.
b. The method used must, at a minimum, include all the constituents listed in Table VIII of Standard Method 6230D.
C. The method used must provide a PQL of 0.5 µg/L or less that must be supported by laboratory proficiency studies as required by the DWQ Laboratory Certification Unit. Any constituents
detected above the MDL but below the PQL of 0.5 µg/L must be qualified (estimated) and reported.
e. If any volatile organic compounds (VOC) are detected as a result of monitoring as provided in Attachment C, then the Washington Regional Office Aquifer Protection Supervisor, telephone
number [phone], must be contacted immediately for further instructions regarding any additional follow-up analyses required.
f. 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/I, 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.
g. Monitoring wells shall be reported consistent with the nomenclature and location information provided in Figure 2 and this attachment.
WQ0022384 Version 2.0 Attachment C
Page I of 1

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PITT COUNTY
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SEWERAGE DISTRICT
SURFACE IRRIGATION SYSTEM
PITT COUNTY
W00022384
SITE DETAIL MAP FOR
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