NC0046728_Report_20180920

North Carolina Department of Environmental Quality
Division of Water Resources
WWTP Upset, Spill, or Bypass 5 -Day Reporting Form
(Please Print or Type Use Attachments if Needed)
Permittee: Town of Mooresville Permit Number: NC0046728
Facility Name: _Rocky River Wastewater Treatment Plant County: Iredell
Incident Started: Date: 9/16/2018 Time: 18:12
Incident Ended: Date: 9/16/2018 Time: 20:39
Level of Treatment:
None —X—Primary Treatment _Secondary Treatment _Chlorination/Disinfection Only
Estimated Volume of Spill/Bypass: less than 100,000 (must be given even if it is a rough estimate)
Did the Spill/Bypass reach the Surface Waters? _X—Yes No
If yes, please list the following:
Volume Reaching Surface Waters: Less than 100,000 Surface Water Name: Dye Creek "Branch"
Did the Spill/Bypass result in a Fish Kill? Yes X_No
Was WWTP compliant with permit requirements? —X—Yes, No
Were samples taken during event? —X—Yes No
Source of the Upset/Spill/Bypass (Location or Treatment Unit):
Effluent (contact) chamber
Cause or Reason for the Upset/Spill/Bypass: Extremely high flows from heavy rain associated with Hurricane
Florence resulted in WWTP effluent flows in excess of 18MGD, exceeding the capacities of Plant pumps; in
addition, Dye Creek flooded and backed up to WWTP outfall
Describe the Repairs Made or Actions Taken: None
Spill/Bypass Reporting Form (August 1997)

WWTP Upset, Spill, or Bypass 5 -Day Reporting Form
Page 2
Action Taken to Contain Spill, Clean Up and Remediate the Site (if applicable):
Action Taken or Proposed to be Taken to Prevent Occurrences: Will rent or purchase additional pumps in
the event of another hurricane event; we had previously always stationed our pumps to assist the influent
pumps
Additional Comments About the Event: The Town experienced over 6.5 inches of rain during the Hurricane
Florence event on 9/14-9/16; during the bypass event, a band of heavy showers covered the plant, inundating
us with flows greater than 18MGD
24 -Hour Report Made To: Division of Water Resources _X Emergency Management
Contact Name: Wes Bell Date: 9/17/2018 Time: 9:10am
Other Agencies Notified (Health Dept, etc):
Person Reporting Event: _James Levis, Manager Rocky River WWTP, Phone Number: 704-662-8341
Did DWR Request an Additional Written Report? _Yes No
If Yes, What Additional Information is Needed:
Spill/Bypass Reporting Form (August 1997)