WQ0001048_Compliance_20190424

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North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue
Governor
CERTIFIED MAIL # 7009 2250 0000 9252 3651
Mr. Charles M. Smithwick, Jr., District Manager
Contentnea Metropolitan Sewerage District
Post Office Box 477
Grifton, NC 28530
Coleen H. Sullins
Director
March 28, 2011
Dee Freeman
Re: Notice of Regulatory Requirements
North Carolina Administrative Code Title 15A Subchapter 2L Classifications and Water Quality Standards Applicable
to the Groundwaters of North Carolina (15A NCAC 2L)
Contentnea Metropolitan Sewerage District, Land Application of Residual Solids (503)
Permit No: WQ0001048
Pitt County
NORR No. NORR-201 1 -LV-0098
Dear Mr. Smithwick:
On February 18, 2006, Contentnea Metropolitan Sewerage District (CMSD) was issued Non -Discharge Permit
NO.WQ0001048 for the operation of a Land Application of Residual Solids facility. Title 15A NCAC 2L .0107 and .0108 establish a
compliance and review boundary for your facility and outline the appropriate actions to be taken when the concentration of any
substance exceeds the maximum allowable concentration established in 15A NCAC 2L .0202 (a copy of the regulations is attached for
your reference).
The following chart and graph reflect chromium levels from groundwater monitoring samples taken from the required
monitoring wells under Permit #WO0001048, as reported in CMSD's 2006 through 2010 Annual Report. Chromium Levels are reported
in ug/L.
Date
Well#9
Well#10
Well#14
Well#15
*Well#17
Well#18
10/30/2006
<5
6
8
<5
26
2/27/2007
<5
6
6
<5
32
6/26/2007
<5
<5
9
<5
47
10/30/2007
<5
5
8
7
43
2/26/2008
45
<5
8
5
48
6/24/2008
<5
12
16
9
39
10/28/2008
<5
<5
9
<5
39
2/25/2009
<5
<5
9
<5
44
72
5/13/2009
33
6/24/2009
<5
5
5
<5
40
21
1012l/2oog
1
6
7
6
43
26
2/23/2010
<5
8
5
<5
22
10
6/2912010
<5
7
9
<5
24
9
10/27/2010
13
6
<5
<5
18
13
2L Standard
10
10
10
1 10
10
10
*Well #17 is a required monitoring well under CMSD's Permit #WQ0022384, but not Permit #WQ0001048.
North Carolina Division of Water Quality Internet: www.ncwateraualitv.ore
943 Washington Square Mall Phone: [phone]
Washington, NC 27889 FAX [phone]
An Equal Opportunity/Affirmative Action Employer- 50 % Recycled/l0% Post Consumer Paper
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Notice of Regulatory Requirements
Contentnea Metropolitan Sewerage District
March 28, 2011
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Contentnea MSD WQ00O1048
Chromium Levels From Well Samples
co m r n n n r` n o m m o 0o W W W W m o 0 0 0 0
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
O fV N 4 t0 W O fV (V 7 (O �W O N N d' N W O N N 4 Z5 a0 O
Date Sampled
—Well#9
—W-Well#10
.2T— Well# 14
Well#15
Well#17
Well#18
The current 2L Standard for chromium is 10 ug/L (prior 2L Standard was 50 ug/L). Based on a review of available monitoring
data, a trend of groundwater quality exceeding the 2L Standard for chromium (of 10 ug/L) has been noted. As such, additional action is
required.
15A NCAC 2L .0106(d)(1) - Corrective Action - states that any person conducting or controlling an activity which is conducted
under the authority of a permit issued by the Division and which results in an increase in concentration of a substance in excess of the
standards at or beyond the review boundary, shall demonstrate, through predictive calculations or modeling, that natural site conditions,
facility design and operational controls will prevent a violation of the standards at the compliance boundary; or submit a plan for
alteration of existing site conditions, facility design or operational controls that will prevent a violation at the compliance boundary, and
implement that plan upon approval by the Director.
The Washington Regional Office is requesting Contentnea Metropolitan Sewage District to fulfill the above noted requirements
and submit the results of any predictive calculations or modeling within ninety (90) days of receipt of this notice. Failure to do so may
result in further enforcement actions and possible civil penalties.
Our office would appreciate your cooperation in this matter. If you have any questions, or wish to discuss any of the regulatory
requirements of this notice, please contact Allen Clark at [phone],
Sincerely,
Yv d��
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David L. May
Aquifer Protection Regional Supervisor
Washington Regional Office
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