20220413 Ver 1_Copper District Project - Phase 1 DWR#20220413_SAW-2020-02050_20220512

Good afternoon,

I am beginning my review of the above referenced project, and in order to complete the review, some additional information is required:

1. The purpose of this project is unclear. No building envelopes are shown to demonstrate the need for the project and to show how wetlands, streams, and buffers impacts are necessary
or why impacts cannot be further avoided and minimized. The roads seem to go to nowhere. Please provide additional details and if necessary, provide revised plans with building envelopes
shown. [15A NCAC 02H .0506(b)(1) & 15A NCAC 02H .0502(a)(9)]
2. The impact maps (Figures 6, 6.1, 6.2, 6.3, and 6.4) are showing up as black and white images that make it difficult to differentiate the impacts. Please submit impact maps that clearly
show the impacts. [15A NCAC 02H .0502(a)(9)]
3. Figures 2, 3, and 4 were also showing up as black and white images that make it difficult to see the parcel outlines indicated. Please resubmit. [15A NCAC 02H .0502(a)(9)]
4. Sheet Number C5.3 shows a rip rap dissipators in both the wetlands below the pond and to the NE of the roundabout. However, these areas appear to be outside of the LOD on Figure 6.1
(and the one has a note that says “Linework in CAD for graphical purposes, no disturbance to wetland outside LOD.” Are rip rap dissipator pads in surface waters planned at these or
any other locations? Are these impacts included in the amounts shown in the PCN? Please provide more details. [15A NCAC 02H .0506(b)(1)]
5. How is hydrology to be maintained between the pond & wetland by the pond and the rest of wetland W3 on the other side of the roundabout? Would it enter the site’s stormwater collection
system instead? Linework is unclear and sometimes obstructed by call-out text. Would the small wetland feature by the pond become isolated? Is a culvert being used? Please provide additional
details. [15A NCAC 02H .0506(b)(3)]
6. Please provide additional information on why the Zone 1 temporary construction access. It appears that this impact could be avoided by accessing the pond from the west side of the
stream as only the western side of the pond appears to have proposed grading impacts. [15A NCAC 02B .0611(b)(2)(A)]
7. It is not clear from the profile view how deeply the culvert would be installed. Please provide more details, including a cleaner illustration. [15A NCAC 02H .0502(c)]
8. Many fill slopes adjacent to wetlands, such as the large stormwater BMP and the pump station pad below Road B for instance, seem to tie into wetland edges. It is unclear if wetlands
are impacted. Please provide additional information. Are retaining walls used? [15A NCAC 02H .0502(c)]
9. Can you please provide additional details concerning the temporary stream impacts? I am having a difficult time finding the dewatering and diversion plans. [15A NCAC 02H .0502(c)]
10. Please provide additional information showing the separation between the Site 3 Roadway Impacts and Site 3 Grading/Revegetation impacts. Roadway impacts amounts are very close to
1/3 of an acre. [15A NCAC 02B .0714(11)]
11. The application states that a Statement of Availability from Falling Creek Stream and Wetland Umbrella Mitigation Bank is attached, but I do not see it. Please provide a Statement
of Availability. [15A NCAC 02H .0502(c)]

As a note, my computer is struggling with the 1 GB “LUMEN CD SUBMITTAL FINAL” 119 page file, even in Laserfiche. If you need to point me to a particular page or section of that file,
could you please send me just those particular pages? The Supplemental Information Form https://edocs.deq.nc.gov/Forms/Supplemental-Information-Form is still the easiest way for me
to receive large files (make sure to choose “More Information Response” and then please send me a quick email to let me know you submitted it. LF will send me an email to tell me I
have new information to review, but the automatic email won’t tell me what project). Small files are fine through email.

Thanks!

Colleen Cohn

Environmental Specialist II

North Carolina Department of Environmental Quality

Division of Water Resources

Raleigh Regional Office

3800 Barrett Drive

Raleigh, NC 27609

Office: 919-791-4258

E-mail correspondence to and from this address may be subject to the

North Carolina Public Records Law and may be disclosed to third parties.

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