20210921_LQS

From:
Denton, Bill
To:
Parr, Adam
Cc:
Garcia, Lauren V
Subject:
FW: Princeton II Quarry (51-05) Comments for Modification
Date:
Tuesday, September 21, 2021 3:23:08 PM
Attachments:
imaae001.Dna
Adam
See Lauren's and Joe's excellent comments in the email below. Any additions/revisions I have made
are in blue text. I changed Lauren's bullets to numbers for easier reference. Site visit was on
September 17, 2021, and the mine was found to be in compliance with its permit conditions. As
always, contact us if you have any questions or need something clarified.
Best regards,
Bill
William H. Denton, IV, PE
Regional Engineer — RRO
Division of Energy, Mineral, and Land Resources — Land Quality Section
Department of Environmental Quality
919 791 4200 office
bill.denton&ncdenr.gov
1628 Mail Service Center, Raleigh, North Carolina 27699
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From: Garcia, Lauren V <[e-mail]>
Sent: Friday, September 17, 2021 3:17 PM
To: Denton, Bill <[e-mail]>; Summers, Kimberly M <[e-mail]>
Subject: Princeton II Quarry (51-05) Comments for Modification
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Joe and I reviewed the plan together and Kimberly and I visited the site today. I plan to get the
inspection report and photos into iBeam on Monday.
The site was in compliance with the mining permit. We just had two comments from our site visit: 1)
The skimmer frame should be flipped on Basin 1. 2) Continue to establish ground cover wherever

possible.
Comments from the application review:
1. May need encroachment agreements from DOT and Duke energy
2. It looks like there are wetland/stream impacts. May need 401/404. Per cover letter,
they are still awaiting buffer determinations from DWR and wetland determinations
from USACE. They state that updated maps will be submitted/application will be
submitted once those determinations have been finalized. Those areas are currently
not shown on the maps provided. We really cannot complete our review until those
are finalized, correct?
3. May need pipe calculations for 36" RCP and driveway pipes. Pipe design calcs are
needed if they are new pipes.
4. Provide proof that new neighbors (northwest of Rains Mill Rd) have bene notified of
blasting.
5. There is no icon for silt fence in the legend. Please provide one.
6. No basin is shown in the area north of the pit for the transition period.
7. May need to ID the contours.
8. Label any SW outfalls on the map.
9. Silt fence is shown through a crossing location at access roads. Please correct and
provide larger scale details showing how the silt fence will be installed in relation to
the construction entrances.
10. Provide a construction sequence for installing the road crossing.
11. Provide maintenance requirements for the temporary crossing and wetland details.
12. Need erosion control measures in the northeast corner. Silt fence alone is inadequate
protection for this area.
13. May need to provide deeds because other land owners are shown on the map.
14. Provide a baffle detail for sediment basins.
15. The buffer determination provided with the application is expired. See note 2 above.
16. Endangered species report provided with the application was only valid for 90 days
and was dated November 2018 (expired).
17. No diversion ditch calculations were provided. Provide design calcs and procedures
for stabilization of all diversion ditches.
Lauren Garcia
Environmental Specialist
Division of Energy, Mineral, and Land Resources — Land Quality Section
North Carolina Department of Environmental Quality
Phone: [phone]
Email: lauren.garcia&ncdenr.gov
Mailing Address: 3800 Barrett Drive, Raleigh, NC

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