20090186 Ver 1_More Info Received_20091026

BUNN ENGINEERING CO., P.C.
CIVIL ENGINEERING, LAND SURVEYING
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152 NORTH MAIN STREET MOUNT AIRY, NC 27030
October 23, 2009
Ms. Annette Lucas
N. C. Department of Water Quality
401 /Wetlands Unit
1650 Mail Service Center
Raleigh, NC 27699-1650
Dear Ms. Lucas:
336-789-6610 FAX [phone]
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In our telephone conversation on October 14, we discussed the Crawford Village project in
Danbury, North Carolina owned by Adrien Associates, LLC. You requested additional
information about future development planned for this project. Enclosed you will find a map and
summary,sheet showing the additional information.
To summarize the history of the project thus far, we have applied for and received a Nationwide
39 Permit from the U.S. Army Corps of Engineers to disturb less than 150 linear feet of
jurisdictional waters. This requires us to meet water quality certification No. 3705. Since we are
below the threshold limits, we provided a complimentary copy of the pre-construction
notification to your office. Upon review of the complimentary PCN form, Ms. Sue Homewood
advised my clients that stormwater outfalls on this site exceed 24% impervious cover and
therefore they would be required to provide a stormwater management plan for approval.
On May 4, I replied to her letter dated April 1 advising that our impervious cover is less than
24%. The only response to my letter was an email that refers me to the regulation, a telephone
conversation with Ms. Homewood and one with you. Ms. Homewood stated in the telephone
conversation that if my clients begin the project without a stormwater management plan, she
would stop the project and issue a fine. Based on these discussions it seems that you refer to
conditions of certification 412-A-ii of Water Quality Certification #3705 which states:
"Contains one or more drainage areas that are anticipated to have impervious
surface cover of equal to or greater than 24 percent. When drainage areas are
difficult to delineate or when a pocket of high density exists within a drainage
area, the division shall use best professional judgment to apply the SMP as
appropriate."
CRAWFORD VILLAGE
DRAINAGE AREA SUMMARY
Total Drainage Area:
Existing Impervious Cover:
89.20 Acres
12.77 Acres
Existing Impervious Percentage: 14.32%
Crawford Village -
Phase I Impervious Cover: 0.71 Acres
Phase II Impervious Cover: 1.87 Acres
Drainage Basin with Phase I Developed = 13.48 = 15.11%
89.20
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Drainage Basin with Phase I & II Developed = 15.35 = 17.21%
89.20