wq0035207_Inspection_20200316

ROY COOPER
Governor
MICHAEL S. REGAN
Secretary
S. DANIEL SMITH
Director
NORTH CAROLINA
Environmental Quality
March 16, 2020
Robert Roth —Technical Services Manager
Synagro Central LLC
284 Boger Rd
Mocksville, North Carolina 27028
SUBJECT: 2018 Annual Report Review
Synagro Central DCAR
Distribution of Class A Residual Solids (503 Exempt)
Permit No. WQ0035207
Davie County
Dear Mr. Roth:
The Division of Water Resources (DWR) acknowledges receipt of the 2018 Annual Report for
the subject permit. A review of this report was conducted by DWR staff person Rebecca
Chandler. Review of the subject report noted the following deficiencies and items of concern:
Deficiencies:
1. Pathogen/vector reduction was missing from the Cone Mills WWTP source on the
Attachment A. The requirement for this sampling was believed to be incorrectly added
to the Attachment, thus permit correction/modification is being completed through
Central Office to resolve this deficiency.
2. Quarterly sampling for the Cones Mills WWTP was not within a once -per -quarter regime
and was slightly out of sampling at least during the quarters in which applications
occurred (1st, 3rd, 4th). Please be sure that sampling is completed appropriately as
required by the Permit.
3. Quarterly sampling for the Hood Creek WTP was slightly outside of once -per -quarter.
4. Quarterly sampling for the John Kime WTP, PTRWA was slightly outside of once -per -
quarter.
Items of Concern:
• Residuals for John Kime WTP, PTRWA showed very low pH. Monitor and lime fields as
needed.
• Residuals for the Pittsboro WTP showed very low pH. Monitor and lime fields as needed.
North Carolina Department of Environmental Quality I Division of Water Resources
Winston-Salem Regional Office [ 450 West Hanes Mill Road, Suite 300 I Winston-Salem, North Carolina 27105
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Fecal density data submitted for the Pittsboro WTP was not required by attachment A
but showed unusually high fecal results for a water treatment plant.
• Residuals for the Dunn WTP showed very low pH. Be sure to monitor and lime fields as
needed.
If you have any questions, please contact Rebecca Chandler or me at [phone].
Sincerely,
DocuSiigned by:
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Regional Supervisor
Water Quality Regional Operations Section
Division of Water Resources, NCDEQ-WSRO
encl: Compliance inspection report
cc: Nate Roth — Electronic Copy
Davie County Environmental Health
DWR Central Office — Permit File WQ0035207
WSRO Files
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North Carolina Department of Environmental Quality I Division of Water Resources
Winston-Salem Regional Office 1450 Hanes Mill Road, Suite 300 1 Winston-Salem, North Carolina 27103
336.776.9800