PERFORMANCE REVIEW 2009

GENERAL INFORMATION:

FACILITY NAME:  Town of Oakboro Wastewater Treatment Plant

RESPONSIBLE ENTITY:  Town of Oakboro

OPERATOR IN RESPONSIBLE CHARGE:  Larry Branch

APPLICABLE PERMITS:  NC0043532 Wastewater Plant, WQ0005387 Land Application, NC0043532 Collection System

DESCRIPTION OF TREATMENT PROCESS:

The Town of Oakboro owns and operates a biological, aerobic treatment facility with a flow capacity of .900 MGD or 900,000 gallons per day.  Treatment units utilized at the wastewater plant are as follows:

MAIN PUMP STATIONS:

        Bar screens and step screens (for solids removal from wastewater)

        Influent flow meter

        Grit chamber (for grit removal)

        Four influent pumps (to pump wastewater four miles to treatment plant)

        Onsite auxiliary power generator

WASTEWATER TREATMENT PLANT

        Two 600.000 gal. aeration basins support the growth of valuable bacteria and provides oxygen to them

        Three secondary clarifiers

        Chlorine contact chamber with de-chlorination

        Aerobic digester storage and further treatment of bio-solids

        Two onsite auxiliary power generators

YEAR IN REVIEW:

                                                                                                                   BOD was non-compliant for April

SANITARY SEWER OVERFLOWS:

For the year 2009 the Town of Oakboro experienced sanitary sewer overflows (SSO’s) totaling 715,000 gallons at the McCoy Creek Pump Station due to “severe natural conditions or equipment failure i.e. heavy rain (Monthly SSO’s totals shown above).  In late 2007 the Town began a “corrective action plan” to reduce inflow and infiltration (I/I) into Town sewer collection system which consisted of sewer line replacement and limited point repairs in an effort to further reduce or eliminate SSO’s. The Town has recently installed a equalization basin (EQ) to further reduce or eliminate future overflow’s. Presently, the Town is in the process of upgrading the McCoy Creek Pump Station and installing a new parallel forced main to the treatment plant. Construction should begin within the next 6 months.

All SSO’s are reported to the State of North Carolina (DENR) Division of Water Quality, Mooresville Regional Office as required in “The Clean Water Act”.  The Town was assessed civil penalties of $10,927.28 for SSO violations.

All overflows were cleaned up in accordance with NC State guidelines.

FOR FURTHER INFORMATION CONTACT:

Larry Branch

704-485-8322