NC0020656_Performance Annual Report 2008_20090129

Annual Performance Report 2008
General Information
Facility/System Name: City of Laurinburg Leith Creek Wastewater Plant
Responsible Entity: City of Laurinburg
Person In Charge/Contact: Robert A. Ellis, Treatment Plants Director
Applicable Permit(s) NC0020656 / WQ002526 / WQCS00062
Description of Collection System
The City of Laurinburg's collection system consists of 34 pump stations located throughout the
system. There are 123.7 miles of gravity sewers and 24 miles of force mains. Our Leith Creek
Plant consist of two types of treatment, one extended aeration plant, consisting of 2 aeration
basins, 2 clarifiers, 2 chlorine contact chambers and one return sludge pump station with 3 pumps,
total capacity 2.0 million gallons per day (MGD).
The second plant is an oxidation ditch style with 1 clarifier, 1 chlorination point and 1 return
sludge pump station with 3 dual speed pumps, total capacity 2.0 MGD, for a total treatment
capacity of 4.0 MGD. The facility has 2 aerobic digesters, (1) 150,000-gallon tank and (1)
650,000-gallon tank with course air diffusers.
Summary of System Performance for Calendar Year 2008
The discharge from the City of Laurinburg's Leith Creek Wastewater Treatment Plant was in non-
compliance for the month of September 2008.
Mogtiu NPDES Violation Reason(s)
September Total Suspended Residual less than Excessive rainfall received
85% removal and excessive influent from Tropical Storm Hanna.
flows. (4.037 MGD average)
Summary of Sanitary Spills/Overflows:
Months Location Volume
09/06/08 Bridge Creek Pump Station 24,000 Gallons
09/11/08 Manhole At 1005 Lila Drive 5,000 Gallons

Summary of Sanitary Spills/Overflows (continued):
Sanitary sewer overflow events in which volumes exceeding 1,000 gallons overflowed and reach
surface waters are included in the monthly estimates and are shown separately as follows:
Date Location Gallons Description Corrective Measures
09/06/08 Bridge Creek 24,000 Excessive Flow Continuing to perform smoke
Pump Station Due to Tropical testing and visual inspections
Storm Hanna. more frequently.
09/11/08 Lila Drive 5,000 Excessive Flow Continuing to perform smoke
Manhole dueto Tropical testing and visual inspections
Storm Hanna. more frequently.
*Note the overflows listed resulted in no environmental impact.
Notification
This Annual Performance Report will appear on the City of Laurinburg's web site
http://www.laurinburg.org and a statement on our Consumer Confidence Report (CCR) will inform
citizens that the Annual Report is available via internet or upon request.
Certification
I certify under penalty of law that this report is complete and accurate to the best of my knowledge.
I further certify that this •report has been made available to the users or customers of the named
system and that those users have been notified of its availability.
/Were,/
Robert A. Ellis, Treatment Plants Director
Treatment Plants Director
City of Laurinburg
January 29, 2009