WQ0029743_Final Permit_20080808

O�
0� CiMichael F. Easley, Governor
William G. Ross Jr., Secretary
UJ `. North Carolina Department of Environment and Natural Resources
Coleen H, Sullins Director
Division of water Quality
August 8, 2008
Gordon Frieze
Blue Marlin, LLC
Post Oft' ice Box 1328
Wrightsville Beach, North Carolina 28480
Dear Mr. Frieze:
Subject: Permit No. WQ0029743
Mimosa Bay WWTP
High -Rate Infiltration
Onslow County
In accordance with your permit modification request received May 14, 2008, we are forwarding
herewith Permit No. WQ0029743, dated August 8, 2008, to Blue Marlin, LLC for the continued operation
of the subject wastewater treatment and high -rate infiltration facilities. The approved modification was to
remove the spray field and irrigation pump station and all its references from the existing permit.
This permit shall be effective from the date of issuance until July 31, 2013, shall void Permit No.
WQ0029743 issued April 4, 2004, 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.
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 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.
One set of approved plans and specifications is being forwarded to you. If you need additional
information concerning this matter, please contact Alice M. Wessner at [phone] or
[e-mail].
Sinc y
Coleen H. Sullins
cc: Onslow County Health Department
Wilmington Regional Office, Aquifer Protection Section
Cavanaugh and Associates, P.A. 530 North Trade Street, Winston-Salem, NC 27101
APS Central Files
LAU Files
N°°rthCarolina
Natuz'ally
Aquifer Protection Section 1636 Mail Service Center Raleigh, NC 27699-1636 Telephone : [phone]
Internet: www.ncwaterquaiitv.ore Location: 2728 Capital Boulevard Raleigh, NC 27604 Fax 1: [phone]
Fax 2: [phone]
An Equal Opportunity/Affirmative Action Employer-- 50% Recycled/10% Post Consumer Paper Customer Service: [phone]

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NORTH CAROLINA
ENVIRONMENTAL MANAGEMENT COMMISSION
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
HIGH -RATE INFILTRATION 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
Mue Marlin, LLC.
ONSLOW County
FOR THE
continued operation of a 118,080 gallon per day (GPD) high -rate infiltration treatment and disposal
facility consisting of a manually cleaned bar screen, two sequencing batch reactors (SBR's) to provide
biological nutrient removal based treatment, two 64,000 gallon treatment basins with dual 732 GPM
pumps, an aerobic digester with 30 days of sludge holding time, post equalization basin, tertiary filtration
(dual cloth media disk filters), a Parshall flume for flow measurement, UV disinfection with 8 lamps, a
five day hydraulic holding upset pond with synthetic liner, a 846,000 ft3 infiltration basin, infiltration
basin subdrains for groundwater level control, a 570 gallon manhole/wetwell with 80 GPM pumps, and a
permanent standby generator to serve the Mimosa Bay WWTP (based on flow from 246 4-bedroom
homes) with no discharge of wastes to the surface waters, pursuant to the application received May 14,
2008 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, 2011, shall void Permit No.
WQ0029743 issued April 4, 2006, and shall be subject to the following specified conditions and
limitations:
I. SCHEDULES
1. Within sixty (60) days of permit issuance, the permittee shall submit a copy of the GW-1 Form (Well
Construction Record) that lists this permit number and the appropriate monitoring well identification
number with the Compliance Monitoring Form (GW-59) for that well. Initial Compliance
Monitoring Forms that do not include copies of the GWA forth are incomplete and may be returned
to the permittee without being processed.
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2. 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 extend 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
3. Within sixty (60) days of permit issuance, the permittee shall submit two original copies of a scaled
site map (scale no greater than 1"=100'); however, special provisions may be granted upon prior
approval for large properties. The map(s) must include the following information:
b o
a. The location and identity of each monitoring well.
b. The latitude and longitude of the established horizontal control monument.
c. The elevation of the top of the well casing (which shall be known as the "measuring point")
relative to a common datum.
d. The depth of water below the measuring point at the time the measuring point is established.
e. The location of review and compliance boundaries.
f. The date the map is prepared and/or revised.
Control monuments shall be installed in such a manner and made of such materials that the
monument will not be destroyed due to activities that may take place on the property. The maps and
any supporting documentation shall be sent to the N.C; Division of Water Quality, Aquifer Protection
Section, 1636 Mail Service Center, Raleigh, N.C. 27699-1636. The permittee is responsible for the
geographic accuracy of any map submitted, however produced.
II. PERFORMANCE STANDARDS
1. The high -rate infiltration 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 or failure of the high -rate infiltration 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.
All wells that are constructed for purposes of groundwater monitoring shall be constructed irz
accordance with 15A NCAC 02C .0108 (Standards of Construction for Wells Other than Water
Supply) and any other state and local laws and regulations pertaining to well construction.
4. Effluent limitations shall not exceed those specified in Attachment A.
5. Application rate, 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.
7. 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.
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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).
9. 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.
10. The facilities permitted herein must be constructed according to the following setbacks:
.a. The setbacks for high -rate infiltration sites shall be as follows (all distances in feet):
i. Surface waters classified as SA: 100
ii. Surface waters not classified as SA 25
iii. Any well with exception of monitoring wells: 100
iv. Groundwater lowering ditches: 50
b. The setbacks for treatment and storage units shall be as follows (all distances in feet):
i. Any well with exception of monitoring wells: 100
ii. Any property line: 50
11. The Operational Agreement (see attached) between the Permittee and the Environmental
Management Commission is incorporated herein by reference and shall be a condition of this permit.
Noncompliance with the terms of the Operational Agreement shall subject the Permittee to all
sanctions provided by North Carolina General Statutes §143-215.6A to §143-215.6C for violation of
or failure to act in accordance with the terms and conditions of this permit.
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 .0707 including operational functions, maintenance
schedules, safety measures, and a spill response plan.
2. Upon classification of the wastewater treatment and high -rate infiltration 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 backup 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. No type of wastewater other than that from Mimosa Bay WWTF shall be disposed onto the high -rate
infiltration area.
4. An automatically activated standby power source shall be on site and operational at all times capable
of powering all essential treatment units. If a generator is employed -as an alternate power supply, it
shall be tested weekly by interrupting the primary power source.
5. No traffic or equipment shall be allowed on the disposal area except while installation occurs or while
normal maintenance is being performed.
6. Public access to the disposal area site shall be controlled. Such controls shall include permanent
fencing.
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7. The residuals generated from these treatment facilities must be disposed / utilized in accordance with
15A NCAC 02T .1100. The Permittee shall=maintain a residual management plan pursuant to 15A
NCAC 02T .0708.
8. Diversion or bypassing of the untreated wastewater from the treatment facilities is prohibited.
9. Freeboard in the infiltration basin shall not be less than 2 feet at any time.
10. A waste -level gauge, to monitor waste levels in the infiltration and five day upset pond shall be
provided. This gauge shall have readily visible permanent markings indicating the maximum liquid
level at the top of the temporary ligtiid storage volume, minimum liquid level at the bottom of the
temporary liquid storage volume, and the lowest point on top of the dam elevations.
11. All wastewater shall be routed to the 5-day holding pond should the limit for fecal coliform (daily
maximum concentration of 25 per 100 ml) or turbidity (instantaneous maximum of 10 NTU) be
exceeded, until such time that the problems associated with the treatment capability of the wastewater
treatment plant have been corrected. The wastewater in the 5-day holding pond shall be pumped back
to the treatment plant for re -treatment or treated in the 5-day pond prior to discharge to the storage
pond.
12. The infiltration basin shall be periodically dredged to remove deposited materials that may impede
the infiltration process. Records shall be kept on site for a period of five (5) years, and the
Wihnington Regional Office's Aquifer Protection Section shall be notified prior to dredging.
IV. MONITORING AND REPORTING REQUIREMENTS
1. 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 high -rate infiltration,
b. Volume of wastewater infiltrated,
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c. Loading rates to each infiltration site list in Attachment B
6. Freeboard (i.e., waste level to the lowest elevation on the top of the embankment) in the infiltration
basin shall be recorded weekly.
7. 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.
8. A maintenance log shall be maintained at this facility including but not limited to the following items:
a. Visual observations of the plant and plant site.
b. Record of preventative maintenance (changing of filters, adjusting belt tensions, alarm testing,
diffuser inspections and cleanings, etc.).
c. Date of calibration of flow measurement device.
d. Date and results of power interruption testing on alternate power supply.
9. Monitor wells shall be sampled 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.
10, Two 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.
11. Three copies of all monitoring data [as specified in Conditions IV.3. and IV.4.1 on Form NDMR for
each point prior to irrigation (PPI) and three copies of all operation and disposal records [as specified
in Condition IV.5] Form NDAR-2 for every infiltration area 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
12. Noncompliance Notification:
The Permittee shall report by telephone to the Wilmington Regional Office, telephone number (910)
796-7215, 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 infiltration basin breakout.
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.
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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 infiltration area.
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.
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 NCG010000, and any requirements pertaining to
wetlands under 15A NCAC 02B .0200 and 02H .0500.
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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 subn itted to the Division on official Division forms,
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.
S. The Permittee must pay the annual fee within 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).
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Permit issued this the 8th of August 2008
NORTH CAR 1NA ENVIltONMENTAL MANAGEMENT COMMISSION
Coleen 14. Sullins, Director
Division of Water Quality
By Authority of the Environmental Management Commission
Permit Number WQ0029743
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Permit No. WQ0029743
09/08/2008
ENGINEER'S CERTIFICATION
Partial Final
1, , as a duly registered Professional Engineer in the State
of North Carolina, having been authorized to observe (periodically, weekly, full time) the construction of
the project,
Project Name
Location and County
for the Perrnittee hereby state that, to the best of my abilities, due care and diligence was used in the
observation of the construction such that the construction was observed to be built within substantial
compliance and intent of this permit, the approved plans and specifications, and other supporting
materials.
Signature
Date
Registration No.
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WQ0029743 Version 1.1 Shell Version 080124 Page 10 of 10

ATTACHMENT A - LIMITATIONS AND MONITORING REQUIREMENTS
PPI 092 - Blue Marlin, LLC — Mimosa Bay WWTF
Permit Number- WQ0029743 Version: 1.1
MONITORING
EFFLUENT CHARACTERISTICS
EFFLUENT LIMITS
REQUIREMENTS
Parameter Description - PCS Code
Monthly Average'
Weekly Average
Daily Maximum`
Measurement
Frequency
Sample
Type
Flow, in Conduit or tluu Treatment Plant - 50050
118,080 gpd
Continuous
Recording
Nitrogen, Ammonia Total (as N) - 00610
4
mg/1
6.
tng/l
2 X week
Composite
BOD, 5-Day (20 Deg. C) - 00310
10
mg/t
15.
mg/I
2 X week
Composite
pH - 00400
5 x week
Grab
Solids, Total Suspended - 00530
5
mg/I
10.
mg/l
2 X week
Composite
Coliform, Fecal MF, M-FC Broth,44.5C - 31616
le
#/100m1
25.
#/100ml
2 X week
Grab
Carbon, Tot Organic (TOC) - 00680
3 X years
Grab '
Nitrogen, Nitrate Total (as N) - 00620
10
mg/l
3 X year'
Grab
Chloride (as Cl) - 00940
3 X year' °
Grab
Solids, Total Dissolved - 70295
3 X year'
Grab
Turbidity, HCH Turbidimiter - 00076
10.
ntu
Continuous
Recorder
PPI 003 -- Groundwater Subdrain Discharge
MONITORING
EFFLUENT CHARACTERISTICS
EFFLUENT LIMITS
REQUIREMENTS
Parameter Description - PCS Code
Monthly Average'
Weekly Average
Daily Maximum
Measurement
Frequency
Sample
Type
Nitrogen, Total (as N) - 00600
3 X years
Grab
Coliform, Fecal MF, M-FC Broth,44.5C - 31616
3 X years
Grab
pH - 00400
3 X years
Grab
Notes:
'Monthly averages for all but fecal coliform shall be the arithmetic mean of all samples collected during the reporting period.
6 Monthly average for fecal .colifortn shall be the geometric mean of all samples collected during the reporting period.
`Daily maximum shall be the maximum value of all samples collected during the reporting period.
d 3 x year sampling shall be conducted during March, July, November.
WQ0029743 Version 1.1 Attachment A ft Page 1 of 1

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WQ0029743 Version 1 A Attachment A Page 2 of 2

ATTACHMENT B - APPROVED LAND APPLICATION SITES AND LIMITATIONS
Blue Marlin, LLC — Mimosa Bay WWTF
Permit Number: WQ0029743 Version: 1.1
INFILTRATION AREA INFORMATION
APPLICATION LIMITATIONS
Field/
Owner
County
Latitude
itude
Net
Dominant
Soil
Parameter
Rate
early
Max
Units
Basin
Acreage
Series
F77'26'25"
2.99
01284 --- Application Surface
0.91
1
Blue Marlin, LLC
Onslow
34'31'17"
Irrigation
gpolft-
Total
2.99
WQ0029743 Version 1.1 Attac#meot B Page 1 of 2

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WQ0029743 Version 1.1 Attachment B Page 2 of 2

ATTACHMENT C — GROUNDWATER MONITORING AND LIMITATIONS Permit Number: WQ0029743 Version: 1.1
Monitoring wells: MW-1, MW-2, MW-3, MW-4
GROUNDWATER CHARACTERISTICS GROUNDWATER STANDARDS MONITORING REQUIREMENTS
Parameter Description - Parameter Code Daily Maximum Frequency Measurement Sample Type Footnotes
Water level, distance from measuring point - 82546 3 X year Calculated b
pH - 00400 8.50 su 3 X year Grab a,g
Coliform, Fecal MF, M-FC Broth,44.5C - 31616 3 X year Grab a,g
Solids, Total Dissolved- 180 Deg.0 - 70300 500.00 mg/1 3 X year Grab a,g
Carbon, Tot Organic (TOC) - 00680 3 X year Grab a,f,g
Chloride (as Cl) - 00940 250,00 mg/1 3 X year Grab a,g
Nitrogen, Ammonia Total (as N) - 006I0 3 X year Grab a,g
Nitrogen, Nitrate Total (as N) - 00620 10.00 mg/l 3 X year Grab a,g
Phosphorus, Total (as P) - 00665 3 X year Grab a,g
Volatile Compounds, (GW) — GWVOC Annually Grab d,e,g
a. 3 X year monitoring shall be conducted in March, Judy, November-
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 tbp of the casing. The measurement
of pl l shall be made alter 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:
1. Standard Method 6230D, PQL at 0.5 µg/L or less
2. Standard Method 621 OD, PQL at 0.5 pg/L or less
3_ EPA Method 8021, Low Concentration, PQL at 0.5 µgib or less
4. EPA Method 8260, Low Concentration, PQL at 0.5 µg/I, 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. I`lle method used must provide a PQL of 0.5 pg/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/I 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.
W Q0029743 Version I.1 Attachment C Page I of 2

Monitoring wells shall he reported consistent with the nomenclature and location information.
WQ0029743 Version 1.1 Attachment C Page 2 of 2

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TUBULAR GALV, STEEL E
M IN 3' CONCRETE BASE 3 2
5-DAY d
UPSET POND t3 3 2
3 21
CONCRETE VALVE VAULT
WITH PINCH5-DAY UPSET PON
/ VALVE - ' 4 SUMP & DRAIN LIM
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