20072036 Ver 1_More Info Letter_20080221

~OF W AT ~'T Michael F. Easley, Governor
QG William G. Ross Jr., Secretary
y North Carolina Department of Environment and Natural Resources
r
~ --~ Coleen H. Sullins, Director
0 "C' Division of Water Quality
February 21, 2008
DWQ Project # 07-2036
Mecklenburg County
CERTIFIED MAIL: RETURN RECEIPT REQUESTED
Quarles Petroleum Inc.
Attn: Craig McBride
1701 Fall Hill Avenue Ste 300
Fredricksburg, VA 22401
Subject Property: Quarles Petroleum Inc.
Sugar Creek [030834, 11-137, C]
REQUEST FOR MORE INFORMATION: STORMWATER MANAGEMENT PLAN
Dear Mr. McBride:
On December 13, 2007, the Division of Water Quality (DWQ) issued a 401 Water Quality
Certification to fi110.154 acre of isolated wetland in order to construct the subject fuel station in
Mecklenburg County. In order to meet Condition 3 of the 401 Certification for this project, a
stormwater management plan, dated January 15, 2008. was received by the DWQ on January 16,
2008. The DWQ has determined that your stormwater management plan was incomplete as
discussed below.
Additional Information Requested:
1. Please address the following issues with the bioretention area design:
a. Appropriate slopes on the underdrain pipes need to be specified.
b. An appropriate P-index of 10 to 30 needs to be specified for the soil media.
2. Please provide the Required Items Checklist (the second page of the Bioretention
Supplement Form) and check to be sure that all of the required items were included in the.
January 16 submittal." The soils test is not required in this case due to your decision to
use underdrains.
3. The ability of the bioretention area to overflow properly is dependent upon the proper
functioning of the adjacent detention pond. Please provide the following information
about the dry detention pond:
a. Calculations for sizing.
b. Routing of flow through the detention pond.
c. Design details and across-section.
d. A signed and notarized Operation and Maintenance Agreement.
No°e Carolina
~furally
401 Oversight/Express Review Permitting Unit
1650 Mail Service Center, Raleigh North Carolina 27699-1650
2321 Crabtree Boulevard, Suite 250, Raleigh, North Carolina 27604
Phone: [phone] /FAX [phone] /Internet: htth:_/h2o.cnr_state.nc.us~nc~~etlands
n., Fn„at nnnnnunity/Affirmative Action Employer - 50% Recycled/10% Post Consumer Paper

07-2036 Quarles Petroleum
February 21, 2008
Page 2 of 2:
The DWQ will require the above additional information to finalize review of the stormwater
management plan for the subject property. Please provide the following information so that we may
continue to review your project. You are welcome to contact me at 919-715-3425 if you have
questions or would like to set up a meeting.
Sincerely,
~~ cc~~
Annette Lucas, Environmental Engineer III
401 Oversight/Express Review Permitting Unit
AML/aml
Cc: Army Corps of Engineers, Asheville
DWQ, ARO
Central Files
File Copy
Rhett Baggett, Jordan, Jones & Goulding, 9101 Southern Pines Blvd., .Ste. 160,
Charlotte, NC 28273
Filename: 072036QuarlesQCardFuelStation(Mecklenburg)_S W_Hold