WQ0004240_Correction_20160225

Water Resources
ENVIRONMENTAL QUALITY
PAT MCCRORY
Govenior
DONALD R. VAN DER VAART
Soc"fory
S. JAY ZIMMERMAN
Dwcfor
February 25, 2016
George W. Radford — Environmental Affairs Officer
US MCAS Cherry Point
US MCAS Cherry Point, Environmental Affairs Dept.
PSC BOX 8006
Cherry Point, NC 28533-0006
Dear Mr. Radford:
Subject: Permit No. WQ0004240
Correction
Bogue Air Field WWTP
Wastewater Irrigation System
Carteret County
In accordance with a written request received February 24, 2016, from Timothy Lawrence, PE, we
are forwarding herewith Attachment C of Permit No. WQ0004240 issued December 17, 2014.
The correction to the subject permit is as follows:
1. Attachment C as a result of installation of new monitoring wells according to the terms of
Conditions 1.2 and I.3
Please add Attachment C to Permit No. WQ0004240 issued December, 17, 2014.
If you need additional information concerning this permit correction, please contact Troy Doby at
[phone] or [e-mail].
Sincere ,
r
1 S. Jay Zimmerman, P.G., Director
X Division of Water Resources
Enclosure
cc: Carteret County Health Department (Electronic Copy)
Wilmington Regional Office, Water Quality Regional Operations Section (Electronic Copy)
Timothy O. Lawrence, PE ([e-mail]) (Electronic Copy)
Beth Buffington, Public Water Supply Section — Protection and Enforcement Branch (Electronic
Copy)
Digital Permit Archive WQ0004240 (Electronic Copy)
Central Files
State of North Carolina I Environmental Quality I Water Resources I Water Quality Permitting I Non -Discharge Permitting
1617 Mail Service Center I Raleigh, North Carolina 27699-1617
919 807 6464

ATTACHMENT C — GROUNDWATER MONITORING AND LIMITATIONS
Monitoring wells: MW-1, MW-2, MW-3
Permit Number: WQ0004240 Version: 3.1
GROUNDWATER CHARACTERISTICS
GROUNDWATER STANDARDS
MONITORING REQUIREMENTS
PCS Code
Parameter Description
Daily Maximum
Frequency Measurement
Sample Type
Footnotes
00680
Carbon, Tot Organic (TOC)
mg/L
3 x Year
Grab
1,6
00940
Chloride (as Cl)
250
mg/L
3 x Year
Grab
1
31616
Coliform, Fecal MF, M-FC Broth, 44.5 °C
#/100 mL
3 x Year
Grab
1
00610
Nitrogen, Ammonia Total (as N)
mg/L
3 x Year
Grab
1
00620
Nitrogen, Nitrate Total (as N)
mg/L
3 x Year
Grab
1
00400
pH
6.5-8.5
su
3 x Year
Grab
1,2
70300
Solids, Total Dissolved - 180 °C
500
mg/L
3 x Year
Grab
1
GWVOC
Volatile Compounds (GC/MS)
Present: Yes/No
Annually
Grab
1, 4, 5
82546
Water Level, Distance from measuring point
feet
3 x Year
Calculated
1, 2, 3
1. 3 x Year monitoring shall be conducted in March, July & November; Annual monitoring shall be conducted every November.
2. 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.
3. 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.
4. Volatile Organic Compounds (VOC) - In November only, analyze by one of the following methods:
a. Standard Method 6230D, PQL at 0.5 µglL or less
b. Standard Method 6210D, PQL at 0.5 µg/L or less
c. EPA Method 8021, Low Concentration, PQL at 0.5 µglL or less
d. EPA Method 8260, Low Concentration, PQL at 0.5 µg/L or less
e. Another method with prior approval by the Water Quality Permitting Section Chief
Any method used must meet the following qualifications:
a. A laboratory must be DWR 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 DWR. Any constituents detected above the MDL
but below the PQL of 0.5 µg/L must be qualified (estimated) and reported.
5. If any volatile organic compounds (VOC) are detected as a result of monitoring as provided in Attachment C, then the Wilmington Regional Office supervisor, telephone number (910)
555-9065, must be contacted immediately for further instructions regarding any additional follow-up analyses required.
6. 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/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.
WQ0004240 Version 3.1 Attachment C Page 1 of 1