WQ0041767_Final Permit_20200709 (2)

WGLA Engineering, PLLC
724 5t" Avenue West
Hendersonville, NC 28739
[phone] wgla.com
June 24, 2020
Tim Heim, PE
NC DWR Water Quality Regional Operations Section
Asheville Regional Office
2090 US 70 Highway
Swannanoa, NC 28778
828-296-4500
Re: Cantrell Hills & Townes at Stonecrest Subdivision(s)
City of Hendersonville Water & Sewer
Henderson County, NC
Dear Mr. Heim:
Our office previously submitted a Fast Track Permit and other required documentation for two
adjacent residential subdivisions. One subdivision is Cantrell Hills, a proposed 192 single family lot
subdivision. The other is The Townes at Stonecrest Subdivision which is a 142 unit townhome
subdivision.
The developer will be building developed lots and then selling them to a homebuilder. Therefore
the number of bedrooms is currently unknown and may vary from 2 BR, 3 BR, or even 4 bedroom
homes. We understand that for each of these two proposed projects, the wastewater design flows
should be estimated from 15A NCAC 02T .0114 which states that a flow rate of 120 GPD per
bedroom be used. Therefore we find it reasonable to consider an average of 3 bedroom dwellings
and that the anticipated flow should be as follows:
Cantrell Hills = 192 Lots x 120 GPD/Bedroom x 3 Bedrooms = 69,120 GPD
Townes at Stonecrest = 142 Units x 120 GPD/Bedroom x 3 Bedrooms=51,120 GPD
Please let me know if you have any questions or need any additional information for this project.
Sincerely,
Jared L. Deridder, PE
C I V I L E N G I N E E R S & L A N D P L A N N E R S