NC0062855_Annual Report_20190104

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January 04, 2019
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:N00062855 RECEIVED/DENR/DWR
Collection System Number:WQCS0004682 JAN 14 2019
Town of Robbins, Moore County, NC Water Resources
Permitting Section
Dear Permitting Authority:
Enclosed is the 2018 Annual Performance Report for the Town of Robbins Wastewater Treatment Plant
and Collections System for the time period of January 1,2018 to December 31,2018.We believe the
report to be complete and accurate.Our customers will be notified of the availability of the report
through the local newspaper,town website or water/sewer bills. If you have any more questions,or
require more information, please contact us.
Sincerely,
Jeremy Monroe
Town Of Robbins Public Utilities
[e-mail]
910-690-5570(cell)
910-948-3063 (office)
Post Office Box 296/101 N. Middleton Street Robbins NC 27325
Phone:[phone]/Fax:[phone]
General Information

General Information
Facility/System Name:Town of Robbins Wastewater Treatment Plant
NPDES Permit Number: NC0062855
Collections System Permit Number:WQCS00124
Responsibility Entity:Town of Robbins
Contact Information:
Permittee: David Lambert
PO Box 296 Robbins, NC 27325
[e-mail]
910-948-2431
WWTP ORC:Jeremy Monroe
PO Box 296 Robbins, NC 27325
[e-mail]
910-690-5570
Collections ORC: Michael Criscoe
910-571-2902
Description of Treatment Process:
All wastewater is conveyed to the Robbins WWTP via a permitted collection system.The collection system consists
of approximately 13.97 miles of gravity sewer,1.58 miles of force main,and three(3)duplex pump stations.
The Town of Robbins WWTP is an extended aeration facility.This facility has a design flow capacity of 1.3 MGD.
Treatment is initiated at a preliminary treatment unit(headworks),Which consist of a grit removal unit,and
manual bar screen.Screened wastewater is pumped to a secondary treatment unit. Dual activated sludge
treatment units are equipped with 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 solids and to help remove phosphorus.Clarified effluent is disinfected by gas chlorination,and
then de-chlorinated with sulfur dioxide.Settled sludge is either returned to the system as Returned Activated
Sludge or wasted into an aerobic digester for further stabilization. Digested sludge is then land applied or
dewatered and transported offsite by a contract composting facility.The treated effluent wastewater is discharged
into 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
Quality(NCDEQ).The town holds a National Pollutant Elimination System (NPDES) permit that includes water
quality limits and sample monitoring requirements. The NPDES permit requires the Town of Robbins WWTP to
test 15 effluent characteristics in the treated water. The monitoring frequency for these effluent
characteristics are set at various intervals to provide consistent results.
The Town of Robbins WWTP consistently achieves 85%efficiency of removal of BOD and TSS.The following is
a summary of testing for effluent characteristics that are assigned Water Quality Standards by the NPDES
permit.
Effluent Characteristics #Required tests #Conducted Tests
Flow Continuous Continuous
Biochemical Oxygen Demand 52 (weekly) 52
Total Suspended Solids 52 (weekly) 52
Ammonia (NH3) 52 (weekly) 52
Dissolved Oxygen 52 (weekly) >52 •
pH 52 (weekly) >52
Temperature Daily Daily
(excluding weekends and holidays)
Fecal Coliform 52 (weekly) >52
Total Chlorine Residual 104 (2/week) >104
Conductivity 52 (weekly) 52
Total Nitrogen 4 (quarterly) >4
Total Phosphorus 52 (weekly) 52
Total Copper 4 (quarterly) 4
Total Mercury 3 (Once 5/years) 3
Chronic Toxicity 4 (quarterly) 4
Please Note:The summary only incorporates monitoring requirements, and does not include daily process
control testing. In addition to the required testing,the WWTP conducted in-house control tests to ensure the
proper operation of the wastewater treatment plant. Some of the plant control tests are pH,temperature,
ammonia (NH3), alkalinity. Nitrates, dissolved oxygen, settle ability, suspended solids, and oxygen uptake rate.

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Performance
Total Residual Chlorine:
The Town of Robbins WWTP has a daily maximum discharge limit of 28 ugh Total Residual Chlorine
an still considered compliant<50 ug/L.There were 17 instances in 2018 where the Total Residual
Chlorine(TRC)was found to be excess of the Daily Maximum Limit, but all instances were still<50 ug/L
and still considered compliant.
January 2018-No Violations
February 2018-No Violations
March 2018
Town of Robbins Public Works had a spill behind American Growler on 3/14/18 of approximately
3,740 gals.It lasted from 6:00am to 4:00pm and was due to debris in the line. It did not reach any
surface water. NCDEQ was notified on 3/14/18 at 3:08 pm
April 2018
Town Of Robbins Public Works had a spill of approximately 200 gals at a manhole behind American
Growler on 4/30/18 that lasted from 10:00am to 12:00pm due to debris in the line.
May 2018-No Violations
June 2018
Town of Robbins Public Works had a spill of approximately 30 gals on 6/11/18 at a manhole on Elm
Street and Frye that lasted from 14:30 to 15:30 due to debris in the line.
July 2018-No Violations
August 2018-No Violations
September 2018
Town of Robbins Public Works had a spill of approximately 7,500 gals on 9/15/18 at Candor pump
station on sunset drive that reached the surface water simlin creek.The specific causes of the spill are
due to severe natural conditions,inflow and infiltration, pump station equipment and power outage.
NCDEQ was notified on 9/15/18 at 8:13 pm
Town of Robbins Public Works had a spill at Shields Woods Pump Station of approximately 6,000 gals
on 9/16/18 that reached surface Water Bear Creek. It lasted from 9/16/18 11:00am to 9/16/18
10:00pm.The cause of the spill was due to severe natural conditions and power outage. NCDEQ was
notified on 9/16/18 at 7:35 pm.

Town of Robbins Public Works had a spill on 9/17/18 at the Main Pump Station on hwy 705 of
approximately 200,000 gals that reached surface Water Bear Creek.The incident occurred on 9/17/18
1:23am to 9/19/18 5:00pm.The spill was caused by severe Natural conditions and flooding of the Main
Pump Station. NCDEQ was notified on 9/17/18 at 2:00am
October 2018-No violations
November 2018
Town of Robbins Public Works had a spill on 11/13/18 at the Main pump Station of approximately
6800 gals due to pump station equipment. It lasted from 11/13/18 7:00am to 11/13/18 12:00pm.
NCDEQ was notified on 11/13/18 at 10:11 pm
Town of Robbins Public Works had a spill on 11/29/18 of approximately 500 gals on sewer line behind
Oak Street and park.The line was broken and repaired.The ORC of Collections reported it to NCDEQ
on 11/29/18.
The Town of Robbins WWTP was non-compliant on 11/13/18 for ammonia,Total phosphorus and
conductivity after signing over samples to Pace Analytical which were lost in transit to the lab.
The Town Of Robbins WWTP was non-compliant on 11/20/18 for Fecal Coliform sample that was
signed over to Pace Analytical but did not make it to the lab in time to be analysis so was discarded
before analysis could be done.
December 2018
Town of Robbins Public Works had a spill on 12/27/18 of approximately 600 gals due to pulling Moore
County's bypass pump and putting in a Godwin bypass pump.The Collections ORC notified the NCDEQ
The Town of Robbins WWTP was non-compliant on 12/18/18 due to BOD being(41.1)when the
weekly limit is 31.0.This is mostly because of the rain amount upsetting the plant.
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Notification
The availability of this report will be placed at Town Hall,101 N.Middleton Street, Robbins, NC and
will be available for review via the Towns website at www.townofrobbins.com .Anyone that wishes to
obtain a copy can do so by visiting Robbins Town Hall or can receive a copy by mail upon request.

Certification
I certify under penalty of law this report is complete and accurate to the best of knowledge. I further
certify this report will be made available to all users and/or customers of Town of Robbins Water
Treatment Plant upon request and advertised as noted above
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Jeremy Monroe >9f j `� v4t./----- Date: /—/6— ?a/ g
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Public Service Dept.
Wastewater Treatment Plant ORC
Mike Chriscoe Date: /--/Q �o?6`�
Collections ORC
' • Lambe
Town Manger Date: //6 r to,'