SW1191201_Add Info_20200514

Farkas, Jim J
From:Farkas, Jim J
Sent:Thursday, May 14, 2020 3:35 PM
To:'Frank Slinsky'
Subject:RE: NCNG Morganton regional Readiness Center - SW1191201
Frank,

I was looking over the additional information you provided on 4/14/2020. Everything looks good except for a few small
issues:

Please correct the following:
- Original Comment 12 – Riprap sizing for C1 – The peak 10-year flowrate for hydrograph 3 (the post-construction
drainage area into the proposed wet pond) is 125.26 cfs and there is only one inlet into the proposed wet pond.
Please either provide the storm sewer calculations showing that the peak 10-year flowrate for this pipe is 56.84
cfs or provide the riprap sizing calculation for the peak 10-year flowrate shown on hydrograph 3.
- Prior Comment 3 – Forebay entrance & exit elevations – Please see the attached sketch showing the forebay
entrance, exit, and sediment storage elevation (SSE) in cross-section. When we refer to the entrance of the
forebay we are referring to what is labeled on sheet C8.14 as “Bottom of permanent sediment storage forebay
entrance” (The lowest excavated point of the bottom of the forebay , located near the inlet) and when we refer
to the exit of the forebay we are referring to what is labeled on sheet C8.14 as “Bottom of permanent sediment
storage forebay exit” (The highest excavated point of the bottom of the forebay , located away from the inlet).
Raising the elevation of the “Bottom of permanent sediment storage forebay exit” from elevation 11960.00 to
elevation 1196.50 will make the design compliant with the MDC (Since a minimum of 6 in. of sediment storage is
provided over the entire forebay bottom and the entrance will be deeper than the exit).
- Prior Comment 4c – Wet Pond Sheet, Lines 43 & 44 – Update the entrance and exit elevation in accordance with
prior comment 3. If revising as suggested, Line 43 would be 66 in. and Line 44 would be 60 in.

Please provide the following:
- Either:
o Storm sewer calculations showing the peak 10-year flowrate for the pipe entering the proposed wet
pond is 56.84 cfs (1x hard copy & 1x electronic copy uploaded to Laserfiche), or
o Riprap sizing calculation for the peak 10-year flowrate shown on hydrograph 3, 125.26 cfs (1x hard copy
& 1x electronic copy uploaded to Laserfiche)
- Revised Plan Sheets (2x hard copies & 1x electronic copy uploaded to Laserfiche):
o C0.0 (If the “revisions” box is updated)
o Any sheets that may have been updated addressing these comments.
- Revised Wet Pond Sheet of Supplement-EZ Form (2x hard copies & 1x full electronic copy of the entire
Supplement-EZ Form uploaded to Laserfiche)

Since these are really minor things, once I get the hard copies, anything else that may have changed from addressing
these issues, and the documents are uploaded to Laserfiche (Provided everything is still in order), we can issue the
permit without doing another formal 30-45 day review.

Let me know if you have any questions.

Jim Farkas
Environmental Engineer
1

North Carolina Department of Environmental Quality
Division of Energy, Mineral, & Land Resources – Stormwater Program

512 N. Salisbury Street
1612 Mail Service Center
Raleigh, NC 27699-1612

[phone]
[e-mail]

Email correspondence to and from this address is subject to the
North Carolina Public Records Law and may be disclosed to third parties.

Based on the current guidance to minimize the spread of COVID-19, the Department of Environmental Quality has
adjusted operations to protect the health and safety of the staff and public. Many employees are working remotely or
are on staggered shifts. To accommodate these staffing changes, all DEQ office locations are limiting public access to
appointments only. Please check with the appropriate staff before visiting our offices, as we may be able to handle your
requests by phone or email. We appreciate your patience as we continue to serve the public during this challenging
time.

From: Farkas, Jim J
Sent: Monday, March 30, 2020 3:42 PM
To: 'Frank Slinsky' <[e-mail]>
Cc: Reed, Isaiah L <[e-mail]>
Subject: RE: NCNG Morganton regional Readiness Center - SW1191201

Good Afternoon,

The Division of Energy, Mineral and Land Resources (DEMLR), received a Stormwater Management Permit Application
th
for the subject project on February 20, 2020. A review of that information has determined that the application is not
complete. Attached is a letter describing the items that need to be submitted. If you have any questions, please feel free
to contact me. My contact information is listed below.

Thank you,

Jim Farkas
Environmental Engineer
North Carolina Department of Environmental Quality
Division of Energy, Mineral, & Land Resources – Stormwater Program

512 N. Salisbury Street
1612 Mail Service Center
Raleigh, NC 27699-1612

2

[phone]
[e-mail]

Email correspondence to and from this address is subject to the
North Carolina Public Records Law and may be disclosed to third parties.

Based on the current guidance to minimize the spread of COVID-19, the Department of Environmental Quality has
adjusted operations to protect the health and safety of the staff and public. Many employees are working remotely or
are on staggered shifts. To accommodate these staffing changes, all DEQ office locations are limiting public access to
appointments only. Please check with the appropriate staff before visiting our offices, as we may be able to handle your
requests by phone or email. We appreciate your patience as we continue to serve the public during this challenging
time.

From: Farkas, Jim J
Sent: Friday, January 17, 2020 12:57 PM
To: Frank Slinsky <[e-mail]>
Cc: Reed, Isaiah L <[e-mail]>
Subject: NCNG Morganton regional Readiness Center - SW1191201

Good Afternoon,

The Division of Energy, Mineral and Land Resources (DEMLR), received a Stormwater Management Permit Application
th
for the subject project on December 18, 2019. A review of that information has determined that the application is not
complete. Attached is a letter describing the items that need to be submitted. If you have any questions, please feel free
to contact me. My contact information is listed below.

Thank you,

Jim Farkas
Environmental Engineer
North Carolina Department of Environmental Quality
Division of Energy, Mineral, & Land Resources – Stormwater Program

512 N. Salisbury Street
1612 Mail Service Center
Raleigh, NC 27699-1612

[phone]
[e-mail]

3

Email correspondence to and from this address is subject to the
North Carolina Public Records Law and may be disclosed to third parties.

4