19970579 Ver 1_Emails_20150717

Strickland, Bev
From: Devane, Boyd
Sent: Thursday, July 16, 2015 2:13 PM
To: Strickland, Bev
Subject: FW: Lake Pointe Corporate Center (Sealed Air -Dry Detention) #97 -0579
Attachments: RE: Lakepointe Corporate Center
From: Higgins, Karen
Sent: Tuesday, July 14, 2015 12:16 PM
To: Devane, Boyd; Johnson, Alan
Cc: Parker, Michael
Subject: RE: Lake Pointe Corporate Center (Sealed Air -Dry Detention)
:. .
I've attached the email we sent previously about this project. For some reason I thought it was grandfathered
for the City of Charlotte and that's why we were involved, but I must have gotten that wrong.
My preference would be for them to send in a copy of the approved SMP from Charlotte and we put that in
the file, just as we would do for other projects with delegated SW approval. I think an electronic copy would
be fine unless anyone objects. I don't believe any formal approval letter is required from us for this project.
Thanks-
Karen
Karen Higgins
401 & Buffer Permitting Unit Supervisor
NC DENR - Division of Water Resources
1617 Mail Service Center, Raleigh, NC 27699
Phone: [phone]
Email: karen.hiRRins @ncdenr.Rov
Website: http: / /Porta1.ncdenr.orR /web /wa /401bufferoermittinR
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.
From: Devane, Boyd
Sent: Tuesday, July 14, 2015 11:12 AM
To: Johnson, Alan; Higgins, Karen
Cc: Parker, Michael
Subject: Lake Pointe Corporate Center (Sealed Air -Dry Detention)
As you might recall, we have an unusual 401 stormwater approval with the Lake Pointe site in Mecklenburg Co. ( #97-
0579). This is the project where we gave the 401 certification in 1997 with some discussion of using existing ponds

and /or adding dry ponds. They have submitted to us the plans that they are required to submit to the City of Charlotte
to build two new dry detention basins. Since the City of Charlotte has a 401 approved program, we always defer to
them on 401 stormwater approvals. Because of my work load, I'd prefer to do that on this project rather than spending
time going over their calculations and drawings. Also, if I found a conflict, then we might have to deal with the City's
staff to work it out. The engineer thinks the City will give their approval within the next few days. I suggest that we give
approval of the stormwater plans received contingent of them documenting to us the City's approval of those same
plans.
Fil

Strickland, Bev
From:
Higgins, Karen
Sent:
Wednesday, May 13, 2015 11:55 AM
To:
Kevin Caldwell
Cc:
Devane, Boyd; Johnson, Alan
Subject:
RE: Lakepointe Corporate Center
Kevin-
Yes, DWR concurs that the existing ponds coupled with the proposed dry detention ponds will meet the spirit
of the 401 issued in 1997. As we discussed yesterday, please provide calculations /site plans for the proposed
dry detention ponds to Boyd for review.
If you have any other questions, please let me know!
Thanks-
Karen
Karen Higgins
401 & Buffer Permitting Unit Supervisor
NC DENR - Division of Water Resources
1617 Mail Service Center, Raleigh, NC 27699 -1617
Phone: [phone]
Email: karen.hiRRins @ncdenr.Rov
Website: http: / /Porta1.ncdenr.orR /web /wa /401bufferoermittinR
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.
From: Kevin Caldwell [irnai Ito: lkcaldwel10) eoscieince irouo.coirn]
Sent: Wednesday, May 13, 2015 8:25 AM
To: Higgins, Karen
Subject: Lakepointe Corporate Center
Karen,
Thanks for your quick response on the Lakepointe Corporate Center project. As we understand it, you have discussed
this matter with Boyd Devane (DENR, Raleigh) and Alan Johnson (DENR, Mooresville).
When the 401 Water Quality Certification (DWQ Project # 970579) was issued on July 30, 1997, the property on the
north side of West Tyvola Road included approximately 100 acres. During the early stages of development, two ponds
with permanent pools were built to control storm water based on our agreement with John Dorney and in accordance
with the 401 Certification additional conditions. The lower dam is considered a high hazard dam and was permitted
(Authorization to Construct) by the Land Quality Section of DENR (Meck. -179) on April 1, 1998. Since 1998
approximately 70 acres of this property have been developed and drains to the existing ponds.
The property that is currently being developed is located on Mecklenburg County tax parcel 14307104 and includes
approximately 30 acres. Based on our current grading plan, about 30% of the 30 acres can drain to the existing

lakes. The remaining area will be conveyed to dry detention basins. Two dry detention basins are proposed for the
current project. The basins will be designed to control the post development 2 and 10 year storms to pre - development
conditions.
The consensus from DENR is that the existing ponds permitted by the Land Quality Section (Meck -179) coupled with the
proposed dry detention ponds will meet spirit of the 401 Water Quality Certification (DWQ Project # 970579) issued on
July 30, 1997.
Please confirm.
Kevin S. Caldwell, P.E.
Senior Vice - President
GEOSCIENCE GROUP, INC.
500 -K Clanton Road
Charlotte, NC 28217
(704) 941 -2252 (0)
(704) 661 -2210 (M)
(704) 525 -2051 (F)
. kcaldwell (c)�,yeoscience�,yrouq.corn