20220301_Basin

From: Parr,Adam
To: Riddle,Shawna
Cc: Miller,David
Subject: RE: [External]New Basin at Grove Stone
Date: Tuesday,March 1,2022 10:30:00 AM
Shawna,
To follow up on our conversation as well as discussions I had with David, this will not require a
modification. However, the permittee must leave the smaller original basin in place as that was the
approved ESC measure. We do not need to require a modification if the company is adding
additional measures upstream from the permitted measure.
Thanks,
Adam Parr, PE
Assistant State Mining Engineer
Division of Energy, Mineral and Land Resources
North Carolina Department of Environmental Quality
Office: [phone]
Cell: [phone]
FAX: [phone]
Email: adam.parr(@ncdenr.g_ov
Physical Address: 512 N Salisbury Street
Mailing Address: 1612 Mail Service Center
Raleigh, North Carolina 27699-1612
Mining Program Website:
https://deq.nc.gov/mining-program
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From: Riddle, Shawna <[e-mail]>
Sent: Wednesday, February 23, 2022 4:23 PM
To: Parr, Adam <[e-mail]>
Subject: Fwd: [External] New Basin at Grove Stone
Adam -
Hey. This is the information you and I talked about the other day and trying to determine if a

modification is needed. Please take a look and let me know.
Thanks
Shawna
Shawna Riddle
Environmental Senior Specialist
Division of Energy, Mineral and Land Resources
North Carolina Department of Environmental Quality
828-296-4500 (office) 828-299-7043 (fax)
Shawna.Riddle(@ncdenr.gov
From:Jason Conner<iconner(@hedrickind.com>
Sent:Tuesday, February 8, 2022 10:49:45 AM
To: Riddle, Shawna <shawna.riddle(@ncdenr.gov>
Subject: [External] New Basin at Grove Stone
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Shawna,
Attached is the updated basin design at Grove Stone. The new basin will be a wastewater basin that
has been designed to handle the 100-year storm plus wash water from our plant. The water will
flow through 2 cells and then be pumped to our large slurry pump at the plant and become part of
our closed loop recycle process. If for some reason the pump malfunctions or we have a 100-year
plus storm event any discharge would flow out the 5'x5'x7' concrete riser into the existing GSQ#1
stormwater basin.
Jason
Jason Conner
828-712-9009
www.hedrickind.com
HEDRICK
INDUSTRIES