NC0089656_Fact Sheet_20181113

DEQ / DWR / NPDES
EXPEDITED FACT SHEET - NPDES PERMIT DEVELOPMENT
NPDES Permit NCO089656
Derek Denard, Compliance & Expedited Permitting Unit / 919-807-6307 13Nov2018
Permit Modification — November 13, 2018:
The Division understands that you have made changes to your facility. The following items from the facility
description have been updated for this minor modification:
• two (2) 2,000 -pound activated carbon tanks.
Technical Correction — April 13, 2017:
It was brought to the Division's attention that there a few details to correct in your recently issued permit
(March 1, 2017). An "I" was inserted to indicate internal sampling for parameters in Part I, Sections A. (1.)
and A. (2). However, in the Electronic Discharge Monitoring Report (eDMR) internet application, an "I"
means influent sampling. Internal sampling was not intended to be reported on DMRs. Therefore, to further
clarify requirements for internal sampling, Footnote 2 in Sections A. (1.) and A. (2.) is rewritten as follows:
Internal Sampling, Location and Frequency: Prior to each carbon -filter change -out, the Permittee shall
collect Internal samples including an influent sample point and immediately upstream of each of the
final carbon -filters in order to document contaminant "break -through" of the next -to last carbon -filter.
Internal samples shall be collected at minimum Monthly, or at a frequency matching or exceeding
system -design expected filter saturation [break -through], herein defined as a Batch (see Treatment
Batch), whichever is more frequent. The Permittee is not required to report internal samples on the
DMR. Copies of these records shall be kept onsite for the duration of the project, at all times available
for DWR inspection.
Fact Sheet
NPDES Permit NC0089656 — 2018 Modification
Page 1
Facility Information
Applicant/Facility Name
D
C Charlotte Plaza LLLP
Dimensional Place - Groundwater Remediation (GW -REM)
Applicant Address
3344 Peachtree Road, Suite 1800, Atlanta, GA 30326
Facility Address
1515 South Tryon Street, Charlotte, NC 28203
Permitted Flow (MGD)
0.108 MGD
Type of Waste
100% industrial, groundwater remediation/dewatering,
privately owned, <1.0 MGD
Facility Class
PC -1
County
Mecklenburg
Permit Status
New
Regional Office
MRO
Stream Characteristics
Receiving Stream
UT to Irwin Creek
Stream Classification
C
Stream Segment
11-137-1
Drainage basin
Catawba
Summer 7Q10 (cfs)
0
Subbasin [HUC]
03-08-32
030501030101
Winter 7Q10 (cfs)
0
Use Support
Impaired for
Cu, Pb & Zn
30Q2 (cfs)
0
303(d) Listed
Average Flow (cfs)
0
State Grid
G15NE
IWC (%)
100%
USGS Topo Quad
Charlotte E, NC
Permit Modification — November 13, 2018:
The Division understands that you have made changes to your facility. The following items from the facility
description have been updated for this minor modification:
• two (2) 2,000 -pound activated carbon tanks.
Technical Correction — April 13, 2017:
It was brought to the Division's attention that there a few details to correct in your recently issued permit
(March 1, 2017). An "I" was inserted to indicate internal sampling for parameters in Part I, Sections A. (1.)
and A. (2). However, in the Electronic Discharge Monitoring Report (eDMR) internet application, an "I"
means influent sampling. Internal sampling was not intended to be reported on DMRs. Therefore, to further
clarify requirements for internal sampling, Footnote 2 in Sections A. (1.) and A. (2.) is rewritten as follows:
Internal Sampling, Location and Frequency: Prior to each carbon -filter change -out, the Permittee shall
collect Internal samples including an influent sample point and immediately upstream of each of the
final carbon -filters in order to document contaminant "break -through" of the next -to last carbon -filter.
Internal samples shall be collected at minimum Monthly, or at a frequency matching or exceeding
system -design expected filter saturation [break -through], herein defined as a Batch (see Treatment
Batch), whichever is more frequent. The Permittee is not required to report internal samples on the
DMR. Copies of these records shall be kept onsite for the duration of the project, at all times available
for DWR inspection.
Fact Sheet
NPDES Permit NC0089656 — 2018 Modification
Page 1

Please note that the influent sampling point for internal sampling is not intended to be reported as influent
on eDMR. Typically for NPDES permits, influent sampling is required for domestic wastewater systems to
demonstrate removal of Biochemical Oxygen Demand (BOD).
Additionally, Footnote 9 is updated to following to clarify language:
For the eDMR application system, any detections shall be reported by entering "1" [Yes (Y) =1] and no
detection shall be reported by entering "0" [NO (N) = 0]. Any detections for Total Purgeables Organics
(EPA Method 624) or Base Neutrals & Acids (EPA Method 625) shall be noted in the comments
section to include the compound detected and reported concentration. Laboratory reports shall be kept
on file in accordance with records retention requirements found in Part II. Section D. 6.
It was also indicated by John M. Stewart, with CPG, ECS Carolinas, LLP that the temporary system was
modified from the permitted system to include four (4) activated carbon tanks instead of two (2) activated
carbon tanks. The supplement to permit cover sheet has also been updated for the facility description to
indicate "four (4) 2,000 -pound activated carbon tanks".
Facility Summary: This permit is for a privately owned treatment system with 100% industrial wastewater
that is <1MGD. The permit authorizes DC Charlotte Plaza LLLP to begin operating a 0.108 MGD
dewatering and groundwater remediation system that includes the following components;
a temporary dewatering and groundwater remediation system during construction consisting of;
o thirty-four (34) recovery wells
o three (3) 1,000 -gallon transfer tanks
o a trailer -mounted treatment with four (4) 2,000 -pound activated carbon tanks
o a bag filter
o a flow totalizer
o an effluent sample port
a permanent dewatering and groundwater remediation system for post construction consisting of;
o a sub -slab dewatering drainage system draining to two (2) sumps
o sump pumps
o two (2) 2,000 -pound activated carbon tanks
o a bag filter
o flow totalizer
o an effluent sample port.
Fact Sheet
NPDES Permit NC0089656 — 2018 Modification
Page 2