NC0062855_Performance Annual Report_20130212

Mayor Lonnie B. English
Commissioners:
Mayor Pro -Tern A. H. Davis, Jr.
Joey Boswell
Terri Holt
Nikki Green
Kevin Stewart
TOWN OF ROBBINS
PO Box 296
Robbins, NC 27325
[phone]
Fax: [phone]
Town Manager
Jeff Sheffield
February 12, 2013
NC Division of Water Quality
NPDES Permit Issuing Authority
1617 Mail Service Center
Raleigh, NC 27699-1617
RE: System Performance Annual Report
NPDES Permit Number: NC0062855
Town of Robbins, Moore County, NC
Dear permitting Authority:
Enclosed is the 2012 Annual Performance Report for the Town urate Our customers will
obbins Wastewater
Treatcomplete and
Treatment Plant. We believe the report bthm� the local newspaper or water/sewer
be notified of the availability of the report A have
bills. oral Office. If you
of this report has been forwarded to the Fayetteville Regional copy any questions, or require more information, please contact us.
Sincerely,
Tommy Gibbons
Robbins WWTP Manager/ORC
DENR-FR(
FEB 2 6 2013
DWQ

GENERAL INFORMATION
Facility/System Name: Town of Robbins Wastewater Treatment Plant
NPDES Permit Number: NC0062855
Collection System Permit Number: WQCS00124
Responsible Entity: Town of Robbins
CONTACT INFORMATION
Permittee: Jeff Sheffield, Town Manager
PO Box 296
Robbins, NC 27325
910-948-2431
WWTP ORC: Tommy Gibbons, WWTP Manager/ORC
PO Box 296
Robbins, NC 27325
910-948-3063
Collections ORC: Jeffrey T. Chriscoe, Street Supervisor
PO Box 296
Robbins, NC 27325
910-948-2431
DESCRIPTION OF TREATMENT PROCESS
All wastewater is conveyed to the Robbins WWTP via a permitted collection system. The
collection system consists of approximately 8.4 miles of gravity sewer, 1.5 miles of force main,
and three duplex pump stations.
The Town of Robbins WWTP is an extended aeration facility. It has a design capacity of 1.3
MGD. Treatment is initiated at a preliminary treatment unit (headworks), which consists of a
grit removal unit, semi -cylindrical fine screen, and a manual bar screen. De -gritted and
screened wastewater is pumped to .a secondary treatment unit. Dual activated sludge
treatment units are provided with integral center -feed clarifiers. Mixing and aeration are
provided by diffused aeration. Caustic soda is added at the head of the system to add alkalinity.
Aluminum sulfate is added prior to the clarifiers to facilitate setting of the solids and to help
remove phosphorus. Clarified effluent is disinfected by chlorination, and then de -chlorinated
with sulfur dioxide. Settled sludge is either returned to the system as Return Activated Sludge
or wasted to an aerobic digester for further stabilization. After digestion is completed, the
stabilized sludge is land applied in liquid form onto permitted land application sites. The
effluent from the wastewater treatment plant is discharged into the Deep River, in the Cape
Fear River Basin.

COMPLIANCE PERFORMANCE
The Town of Robbins WWTP and Collection System are regulated by. the NC Department of
Environmental and Natural Resources (NCDENR). The Town possesses a National Pollutant
Elimination System (NPDES) permit that includes water quality limits and sample monitoring
requirements. The NPDES permit requires the Town to test more than 15 different constituents
in the treated water. The monitoring frequency for these constituents are set at various
intervals such as continuous, daily, weekly, two times per week, monthly, and quarterly. The
Wastewater Treatment Plant was compliant with all of the NPDES permit requirements for the
reporting period except for 10 occasions where "Total Residual Chlorine" on treated effluent
water was over the "Daily Maximum " limit of 28/ugl, and 1 occasion where "TSS" was in
excess of the "Weekly Average Limit" of 31.0 mgl. There were no harmful effects on water
quality. The Wastewater Treatment Plant consistently achieves 92-99% efficiency of removal of
BOD and TSS. The following is a summary of the testing for parameters that are assigned Water
Quality Standards by the NPDES permit.
Please Note: The summary may not include parameters that only incorporate a monitoring
requirement, nor does it include daily process control testing.
Effluent Characteristics #Required #Conducted
Flow Continuous Continuous
Biochemical Oxygen Demand 52 52
Total Suspended Solids 52 52
Ammonia (NH3 as N) 52 52
Dissolved Oxygen 52 332
PH
52 365
Temperature °C 249 365
Fecal Coliform 52 52
Total Chlorine Residual 104 140
Conductivity 52 52
Oil & Grease 52 52
Total Nitrogen 12 12
Total Phosphorus 52 52
Total Copper 12 12
Total Zinc 12 12
Chronic Toxicity 4 4

In addition to the required testing, the Town conducted approximately 1,500 in-house control
tests to ensure the proper operation of the wastewater treatment plant. Some of the plant
control tests were PH, temperature, ammonia, alkalinity, nitrates, dissolved oxygen, settle
ability, suspended solids, and oxygen uptake rate.
SUMMARY OF PERMIT VIOLATIONS
Permit violations that occurred at the WWTP during 2012 were a 10 occasions where the "total
chlorine residual" was in access of the "Daily Maximum Limit" of 28 ugl. Six c12 readings was
taken with the a pocket colorimeter due to our Hach DR2010 spectrometer being out of service
and had a higher reading than the permit "Daily Maximum" of 28 ugl. The Division of Water
Quality was notified about these events however there were no harmful effects on water
quality. In January, three cl2 readings were found to be in excess of permit limits most likely
due to the degrading DR2010 spectrometer. One cI2 reading also was noted on July 2012 DMR
to be in excess of "Daily Maximum Limits".
August 2012 there was a violation of "TSS" of 32.7 mgl. The Robbins WWTP limit for this testing
parameter is 31.0. This occurance was due to draining a secondary basin back into main basin
too quickly. Draining of secondary basin was stopped and additional wasting was performed as
corrective action.
Additional Notes:
Effective August 5, 2012, Robbins WWTP/ORC Rodney Kiser resigned his position and the ORC
position was filled by Tommy Gibbons, Back-up ORC, until 8/27/2012, at which point Tommy
Gibbons assumed the full time position of WWTP ORC. The position of back-up ORC was filled
on 12/12/2012 by Mike Criscoe.
On 12/5/2012 reclaimed water line was discovered to be cracked and leaking effluent water
used for chlorination and de -chlorination purposes. Flow was immediately diverted to
secondary basin to allow for repairs to be completed. WWTP had no discharge for one full day
12/06/2012, and repairs were completed on 12/07/2012. Notification of this event was given to
Dale Lopez NCDENR, Fayetteville Regional Office on 12/5/2012.

CERTIFICATION
have personally examined this report and I am familiar with the information responsible for obtaining the
I
therein. Based upon my inquiry of the individuals immediately
� d informat on is true, accurate, and
information reported herein, I believe that th
complete. I am aware that there are significant penalties for submitting false information.
-14„ e �cJ
Signed this J Z day of b 2013
Jeff Sheffield, Town Manager

• 02 -25-' 13 14:20 FROM-
T-498 P0002/0003 F-O2,5
GENERAL INFORMATION
Facility/System Name:
NPDES Permit Number:
Responsible Entity:
CONTACT INFORMATION:
Permittee :
Collections System ORC:
Towri of Robbins Collections System
WQCS00124
Town of Robbins
Jeffery A. Sheffield, Town Manager
PO Box 296
Robbins, NC 27325
910-948-2431
Jeffrey T Chriscoe, ORC
PO Box 296
Robbins, NC 27325
910-948-2431
DESCRIPTION OF THE COLLECTIONS SYSTEM
All wastewater is conveyed to the Robbins WWTP via a permitted collection system. The
collection system consists of approximately 8.4 miles of gravity sewer, 1.5 miles of force main,
and three duplex pump stations, and all associated piping, valves, and appurtenances required
to make a complete and operational wastewater collections system to serve the Town of
Robbins. All the wastewater goes to the waste water treatment plant for treatment. The
collections system is operated and maintained by cleaning 10 percent of the system once a year
to prevent any SSO's from occurring. We also inspect and exercising all valves, cleaning and
removing debris from the pump station structure, outside perimeter. We also inspect the entire
collection system once a year to reduce the risk of malfunctions and deterioration, operator
errors, and other issues that may cause or lead to the release of wastes to the environment,
threaten human health or create nuisance conditions.
COMPLIANCE PERFORMANCE
The Town of Robbins Collections System and WWTP are regulated by the NC Dept of
Environmental and Natural Resources (NCDENR). The Town of Robbins possesses a System -
Wide Wastewater Collection System Permit. The permit requires the town to collect the
wastewater and for it to be treated at the Waste Water Treatment Plant before being disposed
into the receiving streams. The Town of Robbins collections system was a 100 percent
compliant with all of the NPDES permit requirements for the reporting period.
SUMMARY OF PERMIT VIOLATIONS:
The Town of Robbins Collection System did not experience any SSO's for the year 2012.

9-25-'13 14:20 FROM- T-498 PO003/0003 -F-O85
CERTIFICATION
I have personally examined this report and I am familiar with the information
contained therein. Based upon my inquiry of the individuals immediately
responsible for obtaining the information reported herein, I believe that the
submitted information is true, accurate, and complete. I am aware that there are
significant penalties for submitting false information.
Signed this
25-6
day of
Jeffery A. Sheffield, Town Manager
, 2013