TOWN OF BOONE, NORTH CAROLINA


2000 SYSTEM PERFORMANCE ANNUAL REPORT

Collection System and Wastewater Treatment Plant

This report provides performance information on the Town of Boone sewer collection system and waste treatment plant in the year 2000.  It is required under the provisions of the Clean Water Act of 1999, House Bill 1160 ratified on July 20, 1999.

COLLECTION SYSTEM

I.                   General Information

 

Facility Name:              Town of Boone

Responsible Entity:        Town of Boone

Person in Charge:          Richard Hammons, Superintendent

Applicable Permits:        none

II.                System Description

The collection system consists of approximately 125 miles of sewer lines and six pump stations.  All are stations are monitored by radio signal, 24 hours per day, seven days per week. 

III.             Performance

Three spills that reached surface waters occurred in the collection system during the year.  In accordance with State regulations, all were reported to the State of North Carolina, Department of Environment and Natural Resources.  The table below gives the spill volume and the month when it occurred.

 

 Month                                Volume (gal)

February                        (1)            200-300

May                              (1)            100-200

November                      (1)             50-100

WASTEWATER TREATMENT PLANT

I.            General Information

            Facility Name:               Town of Boone

            Responsible Entity:         Town of Boone

            Person in Charge:            Jim Barbee, Superintendent

Applicable Permits:             NPDES Permit No:                   NC0020621

                                      Class A Residuals Permit:         WQ0013263

                                      Class B Residuals Permit:         WQ0005757

                                      Air Quality Permit:                  08375R01

          

II.                System Description

Wastewater undergoes physical screening through two automatic bar screens, then is pumped to the highest plant elevation by submersible influent pumps.  It then flows through a grit and grease removal unit, then to one of two, 2.4 million-gallon oxidation ditches for biological treatment and ammonia nitrogen removal.  Ditch effluent flows to two circular clarifiers, then to four tertiary sand filters.  The final treatment stage is disinfection with ultraviolet light before discharge to the South Fork New River.

Solids are processed by a 2-meter belt press and a Class A thermal drier, producing an 88-92% dry product that is distributed to the public for use as fertilizer.

III.             Performance

The plant treated 862 million gallons of wastewater in 2000.  The highest volume month was March at 77 million, and the lowest was December with 65 million.

NPDES Permit:  The results for the year 2000 for permit parameters is provided below:

     Parameter                                 Limit               Violations                             

            pH                                          6 – 9 units           0

            BOD                                        5 – 10 ppm          0

            Total Suspended Solids     10     ppm            0

            Ammonia Nitrogen                      2 – 4   ppm          0

            Dissolved Oxygen                        > 5     ppm         0

            Fecal Coliform                          200    ppm            0

            Cadmium                                  0.9    ug/L           0

            Lead                                       57.0   ug/L           0

            Mercury                                  0.04   ug/L            0

            Cyanide                                  11.0   ug/L            1

            Chronic Toxicity                        Pass/Fail               0

 

Cyanide (April 2000):  This violation occurred due to use of a new residuals de-watering agent in the plant that released cyanide.  This material was immediately discontinued, and no further problems with cyanide occurred during the year.

Class A Residuals Permit:  The plant had no violations for permit parameter limits for the year.  Of 508 tons of residuals produced, 155.4 tons were distributed to the public for use as a fertilizer.  Information on proper handling and use was distributed to all recipients.

Class B Residuals Permit:  No Class B residuals were produced during the year.

Air Quality Permit:  The plant incurred No air quality violations.  All equipment performed in accordance with designed removal rates, and the State Air Quality inspection revealed no problems.

Spills/Overflows:  The plant experienced one spill reaching surface waters during the year.  In January 2000, a 16-inch pipe tee in the basement of the influent pump station cracked, filling the lower floor of the building.  Total volume was less than 1,000 gallons.  The spill was reported to the State Department of Environment and Natural Resources as required under the Town’s discharge permit.

IV.              Notification

This report has been provided on the Town of Boone web site at www.ci.boone.nc.us.  In addition, copies are available for review at the Town of Boone City Hall offices at 567 West King Street and the Public Utilities Department at 321 East King Street.

V.                 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.

 

____________________________________                        _______________________

Richard Hammons                                                                   Date

Superintendent

Water and Sewer Operations

____________________________________                        _______________________

Jim Barbee                                                                             Date

Superintendent

Wastewater Treatment Plant