NC0070289_NOV-2020-LV-0891_20210114

a r 4 0 0
7000 Stinson Hartis Rd
Suite F
JAB Indian Trail, NC 28079
WOROS O ORESVILLE REGIONAL OFFICE (980 ) 2 02-2377
January 11, 2021
NC Department of Environmental Quality
Division of Water Resources
Mooresville Regional Office
610 East Center Ave, Suite 301
Mooresville, NC 28115
Dear Corey Basinger:
We are responding to the Notice of Violation & Intent to Assess Civil Penalty number NOV-2020-LV-0891 for Permit
N00070289 dated 14 December 2020. We, as the contract ORC company were informed of this NOV on 1/6/21 and
requested a copy of the paperwork along with a few days to respond. We are responding on behalf of the Stones
Throw Homeowners Association.
After reviewing the DMR for October 2020, where the TSS data exceeded the Daily Max 3 times and subsequently, the
Monthly Average as well, we noted in the DMR that we were having difficulty with the air lift pump lines for Return
Activated Sludge and Waste Activated Sludge becoming clogged with dead leaves. Leaves causing issues in this plant is
typical for the fall season, though not normally clogging the RAS/WAS lines to the point that solids are an issue. This
year, the lines were clogged over weekends causing TSS excursions during the sampling events on Monday -Tuesday
each week. Since the leaves have ceased falling into the plant, the TSS in the effluent has returned to normal levels,
well within permit limits.
We hope that the facility will continue to operate within permit limits now that the fall season is over. Please feel free
to contact us at 980-202-2377 if you need any additional information. This response will be submitted via email as well
as hard copy through US Mail. Thank you for your consideration.
Sincerely,
;_n
, -- � - C-''
Kellie Hedrick, NC/SC PE
Principal Environmental Engineer
NC Certified Contract Wastewater Operator