20231019_OM_Plan

PUMPING OPERATION & MONITORING PLAN
Columbus County, North Carolina
For
WBM 4 LLC
PITS 1-4
CA
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SEAL =
August2023
Prepared by:
NORRIS & TUNSTALL CONSULTING ENGINEERS, P.C.
1429 Ash-Little River Road
Ash, North Carolina 28420
[phone]/*bland na ntengineers.com
License# C-3641
N&T Project# 22081

Pumping Operation & Monitoring Plan
WBM 4 LLC
Pits 1-4
PUMP SPECIFICATIONS
The selected pump will be the following:
• 4" Godwin CD 100S
MONITORING OF WETLAND AREAS
Sediment discharge sampling per General Permit No. NCG020000
Representative Sampling
Samples collected and measurements taken, as required herein, shall be characteristic
of the volume and nature of the permitted discharge. Analytical sampling shall be
performed during a measurable storm event. Samples shall be taken on a day and time
that is characteristic of the discharge. All samples shall be taken before the discharge
joins or is diluted by any other waste stream, body of water, or substance. Monitoring
points as specified in this General Permit shall not be changed without notification to
and approval of the Permit Issuing Authority [40 CFR 122.41(j)].
Recording Results
For each measurement or sample taken pursuant to the requirements of this
General Permit, the permittee shall record the following information [40 CFR
122.41]:
• The date, exact place, and time of sampling or measurements;
• The individual(s) who performed the sampling or measurements;
• The date(s) analyses were performed;
• The individual(s) who performed the analyses;
• The analytical techniques or methods used; and
• The results of such analyses.
Flow Measurements
Where required, appropriate flow measurement devices and methods
consistent with accepted scientific practices shall be selected and used
to ensure the accuracy and reliability of measurements of the volume of
monitored discharges.
Test Procedures
Test procedures for the analysis of pollutants shall conform to the EMC regulations

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published pursuant to NCGS 143-215.63 et. seq, the Water and Air Quality Reporting
Acts, and to regulations published pursuant to Section 304(g), 33 USC 1314, of the
Federal Water Pollution Control Act, as Amended, and Regulation 40 CFR 136.
To meet the intent of the monitoring required by this General Permit, all test procedures
must produce minimum detection and reporting levels and all data generated must be
reported down to the minimum detection or lower reporting level of the procedure. If no
approved methods are determined capable of achieving minimum detection and
reporting levels below the General Permit discharge requirements, then the most
sensitive (method with the lowest possible detection and reporting level) approved
method must be used.
Representative Outfall
If a facility has multiple discharge locations with substantially identical stormwater
discharges that are required to be sampled, the permittee may petition the Director for
representative outfall status. If it is established that the stormwater discharges are
substantially identical and the permittee is granted representative outfall status, then
analytical sampling requirements may be performed at a reduced number of outfalls.
Records Retention
Visual monitoring shall be documented and records maintained at the facility along with
the Stormwater Pollution Prevention Plan (SPPP). Copies of analytical monitoring
results shall also be maintained on-site or be available electronically to a DEMLR
inspector upon request. The permittee shall retain records of all monitoring information,
including
• All calibration and maintenance records
• All original strip chart recordings for continuous monitoring instrumentation
• Copies of all reports required by this General Permit, including Discharge
Monitoring Reports (DMRs) and eDMR or other electronic DMR report
submissions
• Copies of all data used to complete the Notice of Intent to be covered by this
General Permit
These records or copies shall be maintained for a period of at least 5 years from the
date of the sample, measurement, report or Notice of Intent application. This period may
be extended by request of the Director at any time [40 CFR 122.41].
Inspection and Entry
The permittee shall allow the Director, or an authorized representative (including an
authorized contractor acting as a representative of the Director), or in the case of a
facility which discharges through a municipal separate storm sewer system, an
authorized representative of a municipal operator or the separate storm sewer system
receiving the discharge, upon the presentation of credentials and other documents as
may be required by law, to:
• Enter upon the permittee's premises where a regulated facility or
activity is located or conducted, or where records must be kept under
the conditions of this General Permit;

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• Have access to and copy, at reasonable times, any records that must
be kept under the conditions of this General Permit;
• Inspect at reasonable times any facilities, equipment (including
monitoring and control equipment), practices, or operations regulated
or required under this General Permit; and
• Sample or monitor at reasonable times, for the purposes of assuring
permit compliance or as otherwise authorized by the Clean Water
Act, any substances or parameters at any location [40 CFR
122.41(i)].
Discharge Monitorinq Reports
Samples analyzed in accordance with the terms of this General Permit shall be
recorded on Discharge Monitoring Report (DMR) forms provided by the Director or
submitted electronically to the appropriate authority using an approved electronic DMR
reporting system (e.g., eDMR). Annual Summary DMRs shall be delivered to the
Division (Central Office) no later than March 1 of each year (See 2. of this section).
In addition, any samples analyzed in accordance with the terms of this permit that
violate a wastewater effluent limit or exceed a stormwater benchmark value shall be
submitted to the Division Regional Office on a DMR form and delivered to the Division
Central Files no later than 30 days from the date the facility receives the sampling
results from the laboratory. DMR forms are available on the Division's website
(http://portal.ncdenr.org/web/Ir/npdes-stormwater). Regardless of the submission
method (paper or electronic), submittals shall be delivered to the Division, or
appropriate authority, according to the provisions above.
When no discharge has occurred from the facility during the report period, the permittee
is required to submit a discharge monitoring report, within 30 days of the end of the
specified sampling period, giving all required information and indicating "NO FLOW" as
per NCAC T15A 02B .0506.
If the permittee monitors any pollutant more frequently than required by this General
Permit using test procedures approved under40 CFR Part 136 and at a sampling
location specified in this General Permit or other appropriate instrument governing the
discharge, the results of such monitoring shall be included in the data submitted on the
DMR.
The permittee shall record the required qualitative monitoring observations on the SDO
Qualitative Monitoring Report form provided by the Division and shall retain the
completed forms on site. Qualitative monitoring results should not be submitted to the
Division, except upon DEMLR's specific requirement to do so. Qualitative Monitoring
Report forms are available at the website above.
Submitting Reports
Two signed copies of the Annual Summary Discharge Monitoring Report (DMR) shall be
submitted no later than March 1 of each year to DWR Central Files not DEMLR):

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Central Files
Division of Water Resources
(DWR) 1617 Mail Service
Center
Raleigh, North Carolina 27699-1617
If wastewater monitoring results indicate a wastewater effluent limit violation, a
signed DMR form for that monitoring period shall be sent to the appropriate DEMLR
Regional Office (Attn: Stormwater Permitting Program) no later than 30 days from the
date the facility receives the sampling results from the laboratory.
If stormwater monitoring results indicate a stormwater benchmark value exceedance
or the facility is in Tier 2 monitoring, a signed DMR form for that monitoring period
shall be sent to the appropriate DEMLR Regional Office (Attn: Stormwater Permitting
Program) no later than 30 days from the date the facility receives the sampling
results from the laboratory. All stormwater outfall parameters shall be monitored and
reported for any monitoring period that the facility is following a Tier 2 response.
Addresses for each RO and the counties covered by each RO can be found here:
http://Portal.ncdenr.org/web/guesVreoional-offices. The permittee shall retain the
completed originals on site. Visual (Qualitative) monitoring results should not be
submitted to the Division unless specifically requested.
Blank DMR forms, Annual Summary DMR forms, and visual monitoring forms are
available at the website of the Division's Stormwater Permitting Program:
hftp://Portal.ncdenr.org/web/ir/npdes-stormwater
The Permit Issuing Authority may require the permittee to begin reporting monitoring
data electronically during the term of this permit. The permittee may be required to use
North Carolina's eDMR internet application for that purpose. Until such time that the
state's eDMR application is compliant with EPA's Cross-Media Electronic Reporting
Regulation (CROMERR), permittees will be required to submit all discharge monitoring
data to the state electronically using eDMR and will be required to complete the eDMR
submission by printing, signing, and submitting one signed original and a copy of the
computer printed eDMR to the address above.
Availability of Reports
Except for data determined to be confidential under NCGS 143-215.3(a)(2) or Section
308 of the Federal Act, 33 USC 1318, all reports prepared in accordance with the terms
shall be available for public inspection at the offices of the Division. As required by the
Act, analytical data shall not be considered confidential. Knowingly making any false

statement on any such report may result in the imposition of criminal penalties as
provided for in NCGS 143-215.613 or in Section 309 of the Federal Act.
Non-Stormwater Discharges
If the storm event monitored in accordance with this General Permit coincides with a
non- stormwater discharge, the permittee shall separately monitor all parameters as
required under all other applicable discharge permits and provide this information with
the stormwater discharge monitoring report.
Planned Changes
The permittee shall give notice to the Director as soon as possible of any planned
changes at the permitted facility which could significantly alter the nature or quantity of
pollutants discharged [40 CFR 122.41(1)]. This notification requirement includes
pollutants which are not specifically listed in the General Permit or subject to notification
requirements under 40 CFR Part 122.42 (a).
Anticipated Noncompliance
The permittee shall give advance notice to the Director of any planned changes at the
permitted facility which may result in noncompliance with the General Permit [40 CFR
122.41(I)(2)].
Spills
The permittee shall report to the local DEMLR Regional Office, within 24 hours, all
significant spills as defined in Part VI of this General Permit. Additionally, the permittee
shall report spills including:
• Any oil spill of 25 gallons or more, any spill regardless of amount that
causes a sheen on surface waters, any oil spill regardless of amount
occurring within 100 feet of surface waters, and any oil spill less than
25 gallons that cannot be cleaned up within 24 hours.
Bypass
Notice [40 CFR 122.41(m)(3)]:
• Anticipated bypass. If the permittee knows in advance of the need for a bypass, it
shall submit prior notice, if possible at least ten days before the date of the
bypass; including an evaluation of the anticipated quality and effect of the
bypass.
• Unanticipated bypass. The permittee shall submit notice within 24 hours of
becoming aware of an unanticipated bypass.
Twenty-four Hour Reporting
The permittee shall report to the central office or the appropriate regional office any
noncompliance which may endanger health or the environment. Any information shall
be provided orally within 24 hours from the time the permittee became aware of the
circumstances. A written submission shall also be provided within 5 days of the time the

permittee becomes aware of the circumstances.
The written submission shall contain a description of the noncompliance, and its
causes; the period of noncompliance, including exact dates and times, and if the
noncompliance has not been corrected, the anticipated time compliance is expected to
continue; and steps taken or planned to reduce, eliminate, and prevent reoccurrence of
the noncompliance [40 CFR 122.41(I)(6)].
• The Director may waive the written report on a case-by-case basis for reports
under this section if the oral report has been received within 24 hours.
• Occurrences outside normal business hours may also be reported to the
Division's Emergency Response personnel at [phone], [phone] or
[phone].
Other Noncompliance
The permittee shall report all instances of noncompliance not reported under 24 hour
reporting at the time monitoring reports are submitted [40 CFR 122.41(I)(7)].
Other Information
Where the Permittee becomes aware that it failed to submit any relevant facts in a
Notice of Intent to be covered under this General Permit, or submitted incorrect
information in that Notice of Intent application or in any report to the Director, it shall
promptly submit such facts or information [40 CFR 122.41(I)(8)].
DEWATERING METHOD
Water will be discharged to the nearby wetlands. Mining will begin towards the back of
the property and work its way to the front. Dewatering basin locations have been shown
on the plans.
Pit#1
• Place the portable pump at the proposed location designated on the plans.
• Mine Area 1.
o Pump water into the existing wetlands.
Pit#2
• Place the portable pump at the proposed location designated on the plans.
• Mine Area 2.
o Pump water into completed Area 2.
Pit#3
• Place the portable pump at the proposed location designated on the plans.
• Mine Area 3.
o Pump water into completed Area 3.
Pit#4
• Place the portable pump at the proposed location designated on the plans.
• Mine Area 4.
o Pump water into completed Area 4.

EROSION AND FLOOD PREVENTION
Silt fence will be installed along the haul road where wetlands are immediately adjacent.
Other measures will be implemented as deemed necessary.