NC0024201_Permit renewal application_20161231

September 28, 2016
NC DENR Raleigh Regional Office
Dear Mr. Brown:
Mr. Dan Brown, PE, CEO
Roanoke Rapids Sanitary District
Po Box 308
1000 Jackson Street
Roanoke Rapids, NC 27870
The Water Quality Permitting Section acknowledges receipt of your permit application and
supporting documentation received on September 23, 2016. The primary reviewer for this renewal
application is Teresa Rodriguez.
Please respond in a timely manner to requests for additional information necessary to
complete the permit application. If you have any additional questions concerning renewal of the
subject permit, please contact Teresa Rodriguez at 919-807-6387 or [e-mail].
Subject: Permit Renewal
Application No. NC0024201
Roanoke Rapids Sanitary District
Halifax County
cc: Central Files
NPDES
Raleigh Regional Office
State of North Carolina | Environmental Quality | Water Resources
1617 Mail Service Center | Raleigh. North Carolina 27699-1617
919-807-6300
Water Resources
ENVIRONMENTAL QUALITY
DONALD R. VAN DER VAART
Secretan
S. JAY ZIMMERMAN
Director
PAT MCCRORY
Governor
Sincerely,
Wren Thedford
Wastewater Branch
PSD
•T
The primary reviewer will review your application, and she will contact you if additional
information is required to complete your permit renewal. Per G.S. 150B-3 your current permit
does not expire until permit decision on the application is made. Continuation of the current permit
is contingent on timely and sufficient application for renewal of the current permit.
Roanoke Rapids Sanitary District
Renewal Request for NC0024201
o o
Mr. Wren Thedford
NC DEQ, DWR, NPDES Unit
1617 Mail Service Center
Raleigh NC, 27699-1617
135 Aqueduct Roat
Weldon. NC 27890
m
zX
%
=r
I
g
8 fe“ J
*73
r
f\SUU Wastewater Treatment Plant
*35 Aqueduct Roat
Weldon. NC 27890
I
I
I
I
I
I
I
Roanoke Rapids Sanitary DistrictI
September 21, 2016
RECEIVED/NCDEQ/DWR
RE:
OCT 1 2 2016
Dear Mr. Thedford,
9. Mercury Minimization Plan Summary
Mr. Wren Thedford
NC DENR, Division of Water Quality, NPDES Unit
1617 Mail Service Center
Raleigh, North Carolina, 27699-1617
Renewal Request of NPDES Permit Number NC0024201
Roanoke River Waste Treatment Plant
Roanoke River Basin
P.O. Box 308
1000 Jackson Street
Roanoke Rapids, NC 27870
[phone]
Fax: [phone]
www.rrsd.org
a; I (
tz>\i
At the time of this application submittal, the required second species toxicity testing events have not yet
been completed. The June, July, and August tests have been completed and the results are included in our
application package. The remaining second species tests are currently scheduled to be completed in
September and October 2016. When the second species toxicity test results become available, they will
be forwarded to the Division of Water Resources (DWR) along with revisions to Part E of EPA Form 2A
SEP 2 3 2016
Water Quality
Permitting Section
4
The Roanoke Rapids Sanitary District (RRSD) is permitted to discharge 8.34 miHgi^^iRgpeigt^egionaJ Office
(mgd) of treated effluent to the Roanoke River under NPDES Permit No. NC0024201. The NPDES
permit is scheduled to expire on March 31, 2017. The enclosed application is for renewal of the current
permit. In accordance with the requirements of federal (40 CFR 122) and state (15 A NCAC 2H .0105(3))
regulations, we are submitting three signed copies of the completed application package and associated
attachments and figures. The application package includes the following information:
1. NPDES Permit Application - EPA Form 2A
2. EPA Form 2A Additional Information (Topographic Map, Process Flow Diagram and Process
Narrative)
3. Priority Pollutant Scan Analyses (three scans)
4. First Species Effluent Toxicity Tests
5. Second Species Toxicity Tests
6. Biosolids Management Description
7. Technical Memorandum in support of the Reduction of Monitoring Frequency for Exceptionally
Performing Facilities
8. Effluent and stream hardness data
I
Page: 2/3
to include these results. All of the second species toxicity tests will be submitted prior to the current
permit expiration date of March 17, 2017.
In accordance with 15A NCAC 2B .0508(b)(1) and the October 2012 DWR Guidance Document for the
Reduction of Monitoring Frequency for Exceptionally Performing Facilities, the District respectfully
requests a continuation in reduction in frequency monitoring for carbonaceous biochemical oxygen
demand (CBODs), ammonia, and fecal coliform. Effluent sampling results from the past three years
demonstrate that all state regulatory and guidance requirements have been met in support of this request.
A summary of the sampling data and analysis for the reduction of monitoring frequency is attached to this
application.
We request the following information as part of the draft pennit preparation:
• A copy of the permit Fact Sheet.
• Documentation for any methodology, data, and assumptions used in any permit modification,
including Reasonable Potential Analyses, if applicable.
• A copy of any comments that are received from the public regarding this permit renewal, if
applicable.
Additionally, RRSD respectfully requests that the following issues be addressed in this permit renewal:
• We request that Influent Equalization / Sludge Storage tanks be added to the treatment
components list in the supplement to the permit cover sheet as per request by DWR inspector
Autumn Romanski on 4/2/2015.
• We request that Footnote 1 remain in the permit unaltered.
• We request that Footnote 2 - Monthly average effluent CBOD5 and TSS concentrations shall
not exceed 15% of the respective influent value (i.e., 85% removal is required) - be removed
from the permit. We believe that the additional percentage removal limitation is not
warranted as the facility continuously meets the monthly and weekly average permit limit.
If Footnote 2 is not removed, we request that the language be modified to make an exception
for low influent suspended solids and CBOD events. Our facility has difficulty meeting this
percent removal requirement when influent suspended solids and CBOD concentrations are
extremely low. Thus, we request that Footnote 2 be modified, as follows: Monthly average
effluent CBODsand TSS concentrations shall not exceed 15% of the respective influent value
(i.e., 85% removal is required). This requirement shall be waived if influent TSS
concentrations are less than 150 mg/l and/or influent CBOD is less than 100 mg/L.
• Reduce the total nitrogen and total phosphorous monitoring frequency from monthly
sampling to once per quarter. Our facility does not discharge into nutrient sensitive waters.
• Reduce the chronic toxicity sampling (Ceriodaphnid) from quarterly to annually. We have
been conducting chronic toxicity testing since April 1993. All of our toxicity tests have
passed, including the second species testing with Fathead Minnow.
• A reasonable potential analysis was conducted using data from our Long Term Monitoring
Plan (LMTP) and Priority Pollutant Analysis (PPA) scans. Reasonable potential of the
effluent to violate the new instream dissolved metals standards was not found. The District
has been collecting effluent and receiving stream hardness data, which is included in this
application.
s:\wwtp common files\npdes permitysoi? renewal application\rrsd_permit renewal 2oi7_cover letter.docx
1
Attachments:
cc:
I
s:\wwtp common files\npdes permit\2oi7 renewal application\fTsd_pemiit renewal 2oi7_cover letterdocx Page: 3/3
We very much appreciate the time and effort of the NPDES Unit to consider our requests for this permit
renewal. Please do not hesitate to call myself (252-537-9137) or Mary Sadler with Hazen and Sawyer
(919-755-8560) if you have any questions.
Letter from Contract Laboratory
WET Test Results
Hardness Data
Biosolids Program Description
RMF Technical Memo
MMP Summary
Steven Ellis, ORC
Gregg Camp, RRSD Wastewater Treatment Plant
Jeff Poupart, DWQ, Point Source Branch Chief
Tom Belnick, DWQ, NPDES Unit Supervisor
Mary Sadler, PE, Hazen and Sawyer
File
Sincerely,
Roanoke Rapids Sanitary District
R. Danieley BrownfP.E.
Chief Executive Officer
I
NC002420
NPDES FORM 2A APPLICATION OVERVIEW
APPLICATION OVERVIEW
BASIC APPLICATION INFORMATION:
A.
I B.
Certification. All applicants must complete Part C (Certification).C.
SUPPLEMENTAL APPLICATION INFORMATION:
I D.
3.
E.
Industrial User Discharges and RCRA/CERCLA Wastes. A treatment works that accepts process wastewater from anyF.
2.
b.
c.
G.I
ALL APPLICANTS MUST COMPLETE PART C (CERTIFICATION)
Page 1 of 27EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22.
1.
2.
1.
2.
3.
I
RIVER BASIN:
Roanoke
PERMIT ACTION REQUESTED:
Standard Renewal
FORM
2A
NPDES
Discharges an average of 25,000 gallons per day or more of process wastewater to the treatment works (with certain
exclusions); or
Contributes a process wastestream that makes up 5 percent or more of the average dry weather hydraulic or organic
capacity of the treatment plant; or
Is designated as an SIU by the control authority.
A treatment works that has a combined sewer system must complete Part G (Combined Sewer
Toxicity Testing Data. A treatment works that meets one or more of the following criteria must complete Part E (Toxicity Testing
Data):
Has a design flow rate greater than or equal to 1 mgd,
Is required to have a pretreatment program (or has one in place), or
Is otherwise required by the permitting authority to submit results of toxicity testing.
Combined Sewer Systems.
Systems).
Basic Application Information for all Applicants. All applicants must complete questions A.1 through A.8. A treatment works
that discharges effluent to surface waters of the United States must also answer questions A.9 through A. 12.
Expanded Effluent Testing Data. A treatment works that discharges effluent to surface waters of the United States and meets
one or more of the following criteria must complete Part D (Expanded Effluent Testing Data):
Has a design flow rate greater than or equal to 1mgd,
Is required to have a pretreatment program (or has one in place), or
Is otherwise required by the permitting authority to provide the information.
Form 2A has been developed in a modular format and consists of a “Basic Application Information” packet
and a “Supplemental Application Information” packet. The Basic Application Information packet is divided
into two parts. All applicants must complete Parts A and C. Applicants with a design flow greater than or
equal to 0.1 mgd must also complete Part B. Some applicants must also complete the Supplemental
Application Information packet. The following items explain which parts of Form 2A you must complete.
Additional Application Information for Applicants with a Design Flow > 0.1 mgd. All treatment works that have design flows
greater than or equal to 0.1 million gallons per day must complete questions B.1 through B.6.
significant industrial users (SIUs) or receives RCRA or CERCLA wastes must complete Part F (Industrial User Discharges
and RCRA/CERCLA Wastes). SIUs are defined as:
1. All industrial users subject to Categorical Pretreatment Standards under 40 Code of Federal Regulations (CFR) 403.6 and
40 CFR Chapter I, Subchapter N (see instructions); and
Any other industrial user that:
a.
FACILITY NAME AND PERMIT NUMBER:
Roanoke 1River WWT F
BASIC APPLICATION INFORMATION
PART A. BASIC APPLICATION INFORMATION FOR ALL APPLICANTS:
All treatment works must complete questions A.1 through A.8 of this Basic Application Information Packet.
A.1. Facility Information.
Roanoke River WWTPFacility Name
135 Aqueduct RoadMailing Address
Wfeldon. North Carolina 2/890
Steven L. Ellis Contact Person
Operator in Responsible Ct.arqe Title
[phone] Telephone Number
Facility Address
7890
A.2.
I Roanoke Rapids Sanita; Applicant Name
1000 Jackson Street, PO Box 308 Mailing Address
Roanoke Rapids. North Carolina 27870
R. Danieley Brown Contact Person
I Chief Executive OfficTitle
1 -9137 ITelephone Number
Is the applicant the owner or operator (or both) of the treatment works?
[x] operatorE owner
I Indicate whether correspondence regarding this permit
should be directed to the facility or the applicant.
facility
Stormwater Permit - General NCGI'IOODQ.OtherNPDES
Land Application Permit WQOOO'1989OtherUIC
Collection System Permit WQCS00027OtherRCRA
A.4.
OwnershipType of Collection SystemPopulation ServedName
Pjstri Sanitary Sewer1,092Town of Gaston
I Sanitary Sewer15.623City of Roanoke Rapids
Sanitary Sewer966Unincorporated Areas
I Page 2 of 27
District----------------------------------
Halifax & Northampton County.
FACILITY NAME AND PERMIT NUMBER:
Roanoke River WWTP, NC0024201
A.3. Existing Environmental Permits,
(include state-issued permits).
PERMIT ACTION REQUESTED:
Standard Renewal
RIVER BASIN:
Roanoke
13 applicant
Provide the permit number of any existing environmental permits that have been issued to the treatment works
Total population served 17 68
EF A Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22.
(not P.O. Box)
Applicant Information. If the applicant is different from the above, provide the following:
PSD ______________________________________
Collection System Information. Provide information on municipalities and areas served by the facility. Provide the name and population of each
^Zd^TZZvide^ and ownershiP <municiPal- Private’ etC )'
a.
b.
NoYes
A.6.
mgdDesign flow ratea.
This YearLast YearTwo Years Ago
I 4.1 MGD3.8 MGDL 7Annual average daily flow rateb.
12.7 MGD11,4 MGD15.2 MGDc.
I %100Separate sanitary sewer
%Combined storm and sanitary sewer
NoYesa.I If yes, list how many of each of the following types of discharge points the treatment works uses:
Discharges of treated effluenti.I Discharges of untreated or partially treated effluentii.
0Combined sewer overflow pointsiii.I 1Constructed emergency overflows (prior to the headworks)iv.
v.
b.No□ Yes
If yes, provide the following for each surface impoundment:I Location:
mgdN/A
Is discharge
No□ YesDoes the treatment works land-apply treated wastewater?c.
If yes, provide the following for each land application site:
Location:
Number of acres:
mgd
i intermittent?
d.No□ Yes
Page 3 of 27ERA Form 3510-2A (Rev. 1-99). Replaces ERA forms 7550-6 & 7550-22.
FACILITY NAME AND PERMIT NUMBER:
Roanoke River WWTP, NC0024201
Annual average daily volume discharge to surface impoundment(s)
□ continuous or intermittent?
Annual average daily volume applied to site:
continuous or
PERMIT ACTION REQUESTED:
Standard Renewal
RIVER BASIN:
Roanoke
Is land application
Does the treatment works discharge or transport treated or untreated wastewater to another
treatment works?
□ Yes 0 No
Does the treatment works discharge to a receiving water that is either in Indian Country or that is upstream from (and eventually flows
through) Indian Country?
Other N/A ____
Does the treatment works discharge effluent to basins, ponds, or other surface impoundments
that do not have outlets for discharge to waters of the U.S.? Yes
A.8. Discharges and Other Disposal Methods.
Does the treatment works discharge effluent to waters of the U.S.?
A.5. Indian Country.
Is the treatment works located in Indian Country?
A.7. Collection System.
contribution (by miles) of each.
Maximum daily flow rate
Indicate the type(s) of collection system(s) used by the treatment plant. Check ail that apply. Also estimate the percent
Flow. Indicate the design flow rate of the treatment plant (i.e., the wastewater flow rate that the plant was built to handle). Also provide the
average daily flow rate and maximum daily flow rate for each of the last three years. Each year’s data must be based on a 12-month time period
with the 12,h month of “this year" occurring no more than three months prior to this application submittal.
4C0024201
If transport is by a party other than the applicant, provide:
Transporter Name I Mailing Address
I 4/A
Contact Person
I 4/A Title
Telephone Number
I For each treatment works that receives this discharge, provide the following:
4/A Name
M/A Mailing Address
4/A
I N/A Contact Person
Title
I N/ATelephone Number
If known, provide the NPDES permit number of the treatment works that receives this discharge N/A
_ mgd
e.[x] No Yes
intermittent?or
I
Page 4 of 27ERA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22.
FACILITY NAME AND PERMIT NUMBER:
Roanoke River WWTF
Annual daily volume disposed by this method:
Is disposal through this method continuous
PERMIT ACTION REQUESTED:
Standard Renewal
RIVER BASIN:
Roanoke
Provide the average daily flow rate from the treatment works into the receiving facility.
Does the treatment works discharge or dispose of its wastewater in a manner not included
in A.8. through A.8.d above (e.g., underground percolation, well injection):
If yes, provide the following for each disposal method:
Description of method (including location and size of site(s) if applicable):
If yes, describe the mean(s) by which the wastewater from the treatment works is discharged or transported to the other treatment works
(e.g.. tank truck, pipe).
I WASTEWATER DISCHARGES:
A.9. Description of Outfall.I )01Outfall numbera.
Locationb.
(County)I
ft.Distance from shore (if appiicabie) c.
ft.Depth below surface (if applicable) d.
mgd4.1 (Year to Date)Average daily flow ratee.
No (go to A.9.g.)YesDoes this outfall have either an intermittent or a periodic discharge?f.
If yes, provide the following information:
N/ANumber f times per year discharge occurs:
N/AAverage duration of each discharge:
mgdN/AAverage flow per discharge:
Months in which discharge occurs:
NoYesIs outfall equipped with a diffuser?g-
A.10. Description of Receiving Waters.
Roan' Name of receiving watera.
Name of watershed (if known)b.
03010107070010United States Soil Conservation Service 14-digit watershed code (if known):
I Name of State Management/River Basin (if known): < fliyti .c.
03010107United States Geological Survey 8-digit hydrologic cataloging unit code (if known):
I Critical low flow of receiving stream (if applicable) 1172 cfs (7Q10)d.
cfschronic,cfsacute I mg/l of CaCOsTotal hardness of receiving stream at critical low flow (if applicable): e.
I
I Page 5 of 27EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22.
36° 2.6: J 3
(Latitude)
NC
(State)
21390
(Zip Code)
FACILITY NAME AND PERMIT NUMBER:
Roanoke River WWTP, NC0024201
PERMIT ACTION REQUESTED:
Standard Renewal
RIVER BASIN:
Roanoke
Weldon______________
(City or town, if applicable)
77° 36' 3T
(Longitude)
If you answered “Yes” to question A.8.a, complete questions A.9 through A.12 once for each outfall (including bypass points) through
which effluent is discharged. Do not include information on combined sewer overflows in this section. If you answered “No” to question
A.8.a, go to Part B, “Additional Application Information for Applicants with a Design Flow Greater than or Equal to 0.1 mgd.”
A.11. Description of Treatment
a.
Other.Describe:
b.
%Design BODS removal or Design CBOD5 removal
%Design SS removal
%Design P removal
%Design N removal
%
c.
I Sodium Hypochlorite
NoYesIf disinfection is by chlorination is dechlorination used for this outfall?
I NoYesDoes the treatment plant have post aeration?
I
I DMR Data from January 2014 - July 2016 used.nmOutfall number:
AVERAGE DAILY VALUEMAXIMUM DAILY VALUE
PARAMETER Number of SamplesUnitsValueUnitsValue
6.4 s.u.
7.6 s.u.
>660MGDMGD15.2 3.93Flow Rate
<660°C °C18.6 13.36Temperature (Winter)
<660°C °C27.4 24.94
AVERAGE DAILY DISCHARGE
ML/MDLPOLLUTANT
UnitsCone.UnitsCone.
CONVENTIONAL AND NON CONVENTIONAL COMPOUNDS
BODS
____SM5210B264CBOD525.231.1
1/100m ISM9222D2706.4FECAL COLIFORM 600
I ______SM254066019.0TOTAL SUSPENDED SOLIDS (TSS)Mg/I570
I
Page 6 of 27ERA Form 3510-2A (Rev. 1-99). Replaces ERA forms 7550-6 & 7550-22.
pH (Minimum)
pH (Maximum)
Temperature (Summer)
* For pH please report a minimum and a maximum daily value
MAXIMUM DAILY
DISCHARGE
END OF PART A.
REFER TO THE APPLICATION OVERVIEW (PAGE 1) TO DETERMINE WHICH OTHER PARTS
OF FORM 2A YOU MUST COMPLETE
What level of treatment are provided? Check all that apply.
3 Primary Secondary
Advanced
Indicate the following removal rates (as applicable):
Coloni
es/100
ml
Number of
Samples
ANALYTICAL
METHOD
RIVER BASIN:
Roanoke
BIOCHEMICAL OXYGEN
DEMAND (Report one)
Colonies
/100ml
PERMIT ACTION REQUESTED:
Standard Renewal
FACILITY NAME AND PERMIT NUMBER:
Roanoke River WWTP, NC0(
Other : ! --------- -----------------------------
What type of disinfection is used for the effluent from this outfall? If disinfection varies by season, please describe:
A.12. Effluent Testing Information. All Applicants that discharge to waters of the US must provide effluent testing data for the following
parameters. Provide the indicated effluent testing required by the permitting authority for each outfall through which effluent is
discharged. Do not include information on combined sewer overflows in this section. All information reported must be based on data
collected through analysis conducted using 40 CFR Part 136 methods. In addition, this data must comply with QA7QC requirements of
40 CFR Part 136 and other appropriate QA/QC requirements for standard methods for analytes not addressed by 40 CFR Part 136. At a
minimum, effluent testing data must be based on at least three samples and must be no more than four and one-half years apart.
I
BASIC APPLICATION INFORMATION
PART B.
B.2.
B.3.
Mailing Address:
N/A
N/A
B.5.
a.
I b.
Page 7 of 27ERA Form 3510-2A (Rev. 1-99). Replaces ERA forms 7550-6 & 7550-22.
N/A
N/A
RIVER BASIN:
Roanoke
FACILITY NAME AND PERMIT NUMBER:
Roanoke River WVVTP. NC002420 I
PERMIT ACTION REQUESTED:
Standard Renewal
a.
b.
c.
d.
ADDITIONAL APPLICATION INFORMATION FOR APPLICANTS WITH A DESIGN FLOW GREATER THAN OR
EQUAL TO 0.1 MGD (100,000 gallons per day).___________________________________________________
All applicants with a design flow rate > 0.1 mgd must answer questions B.1 through B.6. All others go to Part C (Certification).
B.l. Inflow and Infiltration. Estimate the average number of gallons per day that flow into the treatment works from inflow and/or infiltration.
or Federal agencies. N/A
B.4. Operation/Maintenance Performed by Contractor(s).
Are any operational or maintenance aspects (related to wastewater treatment and effluent quality) of the treatment works the responsibility of a
contractor? Yes 0 No
If yes, list the name, address, telephone number, and status of each contractor and describe the contractor's responsibilities (attach additional
pages if necessary).
Name:
2 gpd
Briefly explain any steps underway or planned to minimize inflow and infiltration.
Completion of O/F G Rehab (364 VF MH Lining, 14,666 LF Pipeline CIP, 1,753 LF Pipe Burst) and Sub Basins C & D Rehab (625 VF MH Lining,
27,279 LF Pipeline CIP, 630 LF Pipe Burst) projects.
Lower Roanoke O/F and Sub Basin A Sewer Rehab project const, permit pending (Rehabilitation of approximately 2,500 linear feet of 8-inch, 1,300
linear feet of 12-inch, 511 linear feet of 18-inch, 1,023 linear feet of 21 -inch, and 6,400 linear feet of 30-inch gravity sewer by CIPP;
relocation of 4,334 linear feet of 8-inch and 38 linear feet of 12-inch gravity sewer; cleaning and inspection of approximately 12,786 linear
feet of 8-inch to 12-inch gravity sewer; rehabilitation of 33 manholes, six (6) point repairs, and 45 sewer service laterals.).
Topographic Map. Attach to this application a topographic map of the area extending at least one mile beyond facility property boundaries. This
map must show the outline of the facility and the following information. (You may submit more than one map if one map does not show the entire
area.) See Attached Figure
The area surrounding the treatment plant, including all unit processes.
The major pipes or other structures through which wastewater enters the treatment works and the pipes or other structures through which
treated wastewater is discharged from the treatment plant. Include outfalls from bypass piping, if applicable.
Each well where wastewater from the treatment plant is injected underground.
Wells, springs, other surface water bodies, and drinking water wells that are: 1) within % mile of the property boundaries of the treatment
works, and 2) listed in public record or otherwise known to the applicant.
e. Any areas where the sewage sludge produced by the treatment works is stored, treated, or disposed.
f. If the treatment works receives waste that is classified as hazardous under the Resource Conservation and Recovery Act (RCRA) by truck, rail,
or special pipe, show on the map where the hazardous waste enters the treatment works and where it is treated, stored, and/or disposed.
Process Flow Diagram or Schematic. Provide a diagram showing the processes of the treatment plant, including all bypass piping and all
backup power sources or redunancy in the system. Also provide a water balance showing all treatment units, including disinfection (e.g.,
chlorination and dechlorination). The water balance must show daily average flow rates at influent and discharge points and approximate daily flow
rates between treatment units. Include a brief narrative description of the diagram. See Attached Figure
Telephone Number:
Responsibilities of Contractor:
Scheduled improvements and Schedules of Implementation. Provide information on any uncompleted implementation schedule or
uncompleted plans for improvements that will affect the wastewater treatment, effluent quality, or design capacity of the treatment works. If the
treatment works has several different implementation schedules or is planning several improvements, submit separate responses to question B.5
for each. (If none, go to question B.6.)
List the outfall number (assigned in question A.9) for each outfall that is covered by this implementation schedule.
N/A
Indicate whether the planned improvements or implementation schedule are required by local, State,
Yes No
:00242(
If the answer to B.5.b is “Yes," briefly describe, including new maximum daily inflow rate (if applicable).c.
IA
d.
applicable. Indicate dates as accurately as possible.
Actual CompletionSchedule
MM/DD/YYYYMM/DD/YYYY
////- Begin Construction
////End Construction
////- Begin Discharge
/L- Attain Operational Level
NoIYesHavee.
Describe briefly:
B.6.
I Outfall Number: DMR Data from January 2014 - July 2016, and PPA 2013,2014, & 2105 used.
AVERAGE DAILY DISCHARGE
ML/NIDL
POLLUTANT
UnitsCone.UnitsCone.
I 0.1mg/iSM4500F255Mg/I4.015.1AMMONIA (as N)
<10ugflHACK 10014644Ug/I<10.8Ug/I43
NASM4500-OG647Mg/»5.9Mg/I9.8DISSOLVED OXYGEN
0.2mg/lEPA 351.124Mg/I5.9Wig/!17.3
O.lmg/IEPA 353.234flg/l6.0Mg/I32.2
5mg/>EPA 166433Mg/I<5.0Mg/I5.0OIL and GREASEI 0.02mg/iEPA 200.733Mg/I1.0Mg/I3.6PHOSPHORUS (Total)
10mg/lSM2540C3Mg/i314.7Mg/I340.0
I OTHER JA
I
Page 8 of 27EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22.
CONVENTIONAL AND NON CONVENTIONAL COMPOUNDS
Mg/I
FACILITY NAME AND PERMIT NUMBER:
Roanoke River V'TWTP
RIVER BASIN:
Roanoke
N/A
Implementation Stage
END OF PART B.
REFER TO THE APPLICATION OVERVIEW (PAGE 1) TO DETERMINE WHICH OTHER PARTS
OF FORM 2A YOU MUST COMPLETE
PERMIT ACTION REQUESTED:
Standard Renewal
Number of
Samples
CHLORINE (TOTAL
RESIDUAL, TRC)
TOTAL KJELDAHL
NITROGEN (TKN)
NITRATE PLUS NITRITE
NITROGEN
TOTAL DISSOLVED SOLIDS
(TDS)
MAXIMUM DAILY
DISCHARGE ANALYTICAL
METHOD
/ /
appropriate permits/clearances concerning other Federal/State requirements been obtained?
EFFLUENT TESTING DATA (GREATER THAN 0.1 MGD ONLY).
Applicants that discharge to waters of the US must provide effluent testing data for the following parameters. Provide 'ndicated
effluent testing required by the permitting authority for each outfall through which effluent is discharged Do not include '"^mation
on combine sewer overflows in this section. All information reported must be based on data collected through analysis conducted
using 40 CFR Part 136 methods. In addition, this data must comply with QA/QC requirements of 40 CFR Part 136 and °the^PP^0P"a^®
QA/QC requirements for standard methods for analytes not addressed by 40 CFR Part 136. At a minimum effluent testing data mu
based on at least three pollutant scans and must be no more than four and on-half years old.
Provide dates imposed by any compliance schedule or any actual dates of completion for the implementation steps listed below, as
applicable. For improvements planned independently of local, State, or Federal agencies, indicate planned or actual completion dates, as
BASIC APPLICATION INFORMATION
I
I DistrictName and official title
Signature
Telephone number
Date signed
I
I
I
Page 9 of 27EPA Form 3510-2A (Rev. 1-99) Replaces EPA forms 7550-6 & 7550-22.
FACILITY NAME AND PERMIT NUMBER:
Roanoke River WWTP, NC0024201
PERMIT ACTION REQUESTED:
Standard Renewal
RIVER BASIN:
Roanoke
Chief Executive Officer, Roanoke Rapids Sanitary
PART C. CERTIFICATION ________________ ________
All applicants must complete the Certification Section. Refer to instructions to determine who is an officer for the purposes of
certification. All applicants must complete all applicable sections of Form 2A, as explained in the App ication'
parts of Form 2A you have completed and are submitting. By signing this certification statement applicants confirm that they have reviewed
Form 2A and have completed all sections that apply to the facility for which this application is submitted.
Indicate which parts of Form 2A you have completed and are submitting:
Basic Application Information packet Supplemental Application Information packet:
S Part D (Expanded Effluent Testing Data)
(3 Part E (Toxicity Testing: Biomonitoring Data)
gj Part F (Industrial User Discharges and RCRA/CERCLA Wastes)
□ Part G (Combined Sewer Systems)
ALL APPLICANTS MUST COMPLETE THE FOLLOWING CERTIFICATION.
for knowing violations.
R. Danieley.Brown, Chief Execi

[phone] '
fillip
Upon request of the permitting authority, you must su/mit any other information necessary to assure wastewater treatment practices at the treatment
works or identify appropriate permitting requirements.
SEND COMPLETED FORMS TO:
27699-1617
Page 10 of 27ERA Form 3510-2A (Rev. 1-99). Replaces ERA forms 7550-6 & 7550-22.
NCDENR/ DWQ
Attn: NPDES Unit
1617 Mail Service Center
Raleigh, North Carolina
I
RIVER BASIN:PERMIT ACTION REQUESTED:FACILITY NAME AND PERMIT NUMBER:
RoanokeStandard RenewsRoanoke River WWTP., NC0024201
SUPPLEMENTAL APPLICATION INFORMATION
PART D. EXPANDED EFFLUENT TESTING DATA
Refer to the directions on the cover page to determine whether this section applies to the treatment works.
Outfall number:
MAXIMUM DAILY DISCHARGE
ML/MDLPOLLUTANTUnitsMassCone.UnitsUnitsMassUnitsCone.
METALS (TOTAL RECOVERABLE), CYANIDE, PHENOLS, AND HARDNESS.
ERA 200.8 .025Mg/L 785<025<813Mg/L<025ANTIMONY
ERA 200.8 U1UMg/L <314<.010<325Mg/L<.010ARSENICI DayDay
.005ERA 200.83<.005 Mg/L < 157<163Mg/L<.005BERYLLIUM
.002ERA 200.83<063<.002 Mg/L<,065Mg/L<.002CADMIUM
002ERA 200 83<.157Mg/L< 005<.162< 005 Mg/LCHROMIUM
002ERA 200.83<278<009 Mg/L.488Mg/L.015COPPER
010ERA 200 83<.314<010 Mg/L<.325Mg/L<.010LEAD
0 0011631E3.0005.0155 Ug/L0009Ug/I0284MERCURY
010ERA 200.83<.314< 010 Mg/LMg/L <.325<.010NICKEL
010ERA 200 83<.314Mg/L<.010<.325<010 Mg/LSELENIUM
.005ERA 200.83Mg/L <.157< 005<.162Mg/L<.005SILVER
.020ERA 200.83<.063<020 Mg/L<.065Mg/L<020THALLIUM
010ERA 200.8o1.09Mg/L.0351.3040Mg/LZINC
.005ERA 335 43Mg/L <.157<.005<.162Mg/L<.005CYANIDE
010ERA 420.13<427<014 Mg/L540Mg/L.018
SM 3240B 132305Mg/L73 332662Mg/LHARDNESS (as CaCO3)
Use this space (or a separate sheet) to provide information on other metals requested by the permit writer
Page 11 of 27EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22.
(Complete once for each outfall discharging effluent to waters of the United States.)
AVERAGE DAILY DISCHARGE
TOTAL PHENOLIC
COMPOUNDS
Lbs'
Day
Lbs/
Day
Lbs
Day
Lbs/
Day
Lbs
Day
Lbs/
Day
Lbs.
Day
Lbs-
Day
Lbs/
Day
Lbs/
Day
Lbs/
Day
Lbs/
Day
Number
of
Samples
ANALYTICAL
METHOD
Lbs;
Day
Lbs'
Day
Lbs;
Day
Lbs'
Day
Lbs/
Day
Lbs/
Day
Lbs/
Day
Lbs/
Day
Lbs/
Day
Lbs'
Day
Lbs'
Day
Lbs/
Day
Lbs/
Day
Lbs/
Day
Lbs'
Day
Lbs'
Day
Lbs'
Day
Lbs
Day
Effluent Testing: 1.0 mgd and Pretreatment Works. If the treatment works has a design flow greater than or equal to 1.0 mgd or it has (or is required
to have) a pretreatment program, or is otherwise required by the permitting authority to provide the data, then provide effluent testing data for the following
pollutants. Provide the indicated effluent testing information and any other information required by the permitting authority for each outfall through which
effluent is discharged. Do not include information on combined sewer overflows in this section. All information reported must be based on data collected
through analyses conducted using 40 CFR Part 136 methods. In addition, these data must comply with QA/QC requirements of 40 CFR Part 136 and
other appropriate QA/QC requirements for standard methods for analytes not addressed by 40 CFR Part 136. Indicate in the blank rows provided below
any data you may have on pollutants not specifically listed in this form. At a minimum, effluent testing data must be based on at least three pollutant
scans and must be no more than four and one-half years old.
FACILITY NAME AND PERMIT NUMBER:RIVER BASIN:PERMIT ACTION REQUESTED:
Roanokedard RenewalIC0024201Roanoke River
(Complete once for each outfall discharging effluent to waters of the United States.)Outfall number:
I AVERAGE DAILY DISCHARGEMAXIMUM DAILY DISCHARGE
ML/MDLPOLLUTANTUnitsCone.Units MassUnitsCone.Units Mass
I Please See notes In Additional Information Section.VOLATILE ORGANIC COMPOUNDS
503EPA 624<6.07<200 Ug/L<15.0<500 Ug/LACROLEIN
I EPA 624 103<1.21<40 Ug/L<100 <3.0ACRYLONITRILEUo/L
1EPA 6243<0.12<.30 <4 Ug/L<10 Ug/LBENZENEI EPA 6243<0.12<4 Ug/L<30<10 Ug/LBROMOFORM
1EPA 6243Ug/L <0.12I<30<10 ug/L Day
EPA 6243<0.12Ug/LUg/L <.30 <4<10CHLOROBENZENE
1EPA 6243<0.12Ug/L<.30Ug/L
5EPA 6?<i3'2CCHLOROETHANE
EPA 624 53<20 Ug/L <0.61Ug/L <1.5<50
5EPA 6243<0.21<6.80 Ug/L<.30<10 Ug/LCHLOROFORM
EPA 6243<0.12Ug/L<.30<10 Ug/L
1EPA 6243Ug/L <0.12<.30 <4<10 Ug/L1,1-DICHLOROETHANE
1EPA 6243<0.12Ug/L<.30Ug/L <4<101,2-DICHLOROETHANE
1EPA 6243Ug/L <0.12<.30Ug/L<10
1EPA 6243<0.12Ug/L<.30<10 Ug/L <4
EPA 624 13<0.12Ug/L<.30 <4<10 Ug/L1,2-DICHLOROPROPANE Day
IEPA 6243Ug/L <0.12<.30 <4<10 Ug/L
1EPA 6243Ug/L <0.12<4Ug/L <.30<10ETHYLBENZENE
I 5EPA 6243<0.61<20 Ug/L<1.5<50 Ug/LMETHYL BROMIDE
EPA 624 53<0.57<18.7 Ug/L<1.5<50 Ug/LMETHYL CHLORIDE
EPA 6243<0.12Ug/L<.30 <4<10 Ug/LMETHYLENE CHLORIDE
1EPA 6243<0.12<4 Ug/L<.30<10 Ug/L
1EPA 6243<0.12Ug/L<.30 <4<10 Ug/L
EPA 6243<0.12Ug/L<.30<■10 Ug/L <4TOLUENE
Page 12 of 27EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22.
Lbs/
Day
Lbs/
Day
Number
of
Samples
CARBON
TETRACHLORIDE
CHLORODIBROMO­
METHANE
2-CHLOROETHYLVINYL
ETHER
DICHLOROBROMO­
METHANE
TRANS-1,2-DICHLORO-
ETHYLENE
1,1-DICHLORO-
ETHYLENE
1,3-DICHLORO-
PROPYLENE
1,1,2,2-TETRA-
CHLOROETHANE
TETRACHLORO­
ETHYLENE
Lbs/
Day
Lbs-'
Day
Lbs/
Day
Lbs'
Day
Lbs/
Day
Lbs/
Day
Lbs/
Day
Lbs/
Day
Lbs/
Day
Lbs.'
Day
Lbs/
Day
Lbs/
Day
Lbs/
Day
Lbs/
Day
ANALYTICAL
METHOD
Lbs/
Day
Lbs/
Day
Lbs'
Day
Lbs/
Day
Lbs/
Day
Lbs'
Day
Lbs.'
Day
Lbs/
Day
Lbs/
Day
Lbs/
Day
Lbs'
Day
Lbs.'
Day
Lbs/
Day
Lbs'
Day
Lbs/
Day
Lbs/
Day
Lbs/
Day
Lbs/
Day
Lbs'
Day
Lbs'
Day
Lbs/
Day
Lbs/
Day
Lbs/
Day
Lbs'
Day
Lbs/
Day
Lbs/
Day
Lbs'
Day
Lbs'
Day
Lbs/
Day
Lbs/
Day
Uy/L
RIVER BASIN:PERMIT ACTION REQUESTED:FACILITY NAME AND PERMIT NUMBER:
I RoanokeStandardRoanoke River WWTP, NC0024201 enewa
(Complete once for each outfall discharging effluent to waters of the United States.)Outfall number:001
AVERAGE DAILY DISCHARGEMAXIMUM DAILY DISCHARGE
MUMDLPOLLUTANT
Cone.Units Mass UnitsMass UnitsCone.Units
3 EPA 62d<0.12Ug/L<.30 <410Ug/L
EPA 6243<0.12<4 Ug/L<10 <30Ug/L
EPA 6243<0.12c.30 <4 Ug/LUq/LTRICHLOROETHYLENE Day
EPA 624 5Ug/L <0.61<20<1.5VINYL CHLORIDE
Use this space (or a separate sheet) to provide information on other volatile organic compounds requested by the permit writer
I ACID-EXTRACTABLE COMPOUNDS
EPA 6253<10 Ug/L <■314Ug/L <.325P-CHLORO-M-CRESOL DayI 10EPA 6253<.314<10 Ug/L<3252-CHLOROPHENOL Ug/L
10EPA 625<.314<.325 <10 Ug/L2,4-DICHLOROPHENOL <10 Ug/L
10EPA 6253Ug/L <.314<.325 <10Ug/L2,4-DIMETHYLPHENOL 0
50EPA 6253<50 <1.57Ug/L<50 Ug/L <1.634,6-DINITRO-O-CRESOL
50EPA 625<50 Ug/L <1.57<1 63<50 Ug/L2,4-DINITROPHENOL
10EPA 6253Ug/L <.314<325 <10<10 Ug/L2-NITROPHENOL
50EPA 6253<50 ug/L <1.57<1 63<50 Ug/L4-NITROPHENOL
50EPA 6253<50 Ug/L <1.57Ug/L <1.63<50PENTACHLOROPHENOL
10EPA 6253<10 Ug/L <.314<.325Ug/L<10PHENOL
EPA 625 10Ug/L <.3'14<325 <10Ug/L<10
Use this space (or a separate sheet) to provide information on other acid-extractable compounds requested by the permit writer
I BASE-NEUTRAL COMPOUNDS
10EPA 6253Ug/L <.314<10<10 <.325Ug/LACENAPHTHENE
I 10EPA 625□Ug/L <.314<.325 <10<10 Ug/LACENAPHTHYLENE
10EPA 6253Ug/L <.314<10Ug/L <.325<10ANTHRACENE
I 503EPA 625<50 <1.57Ug/L<50 Ug/L <1.63BENZIDINE
10EPA 6253<10 Ug/L <.314<.325<10 Ug/LBENZO(A)ANTHRACENE
10EPA 6253Ug/L <.314<10Ug/L <.325dOBENZO(A)PYRENE
Page 13 of 27EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22.
Lbs'
Day
Lbs/
Day
Lbs/
Day
Lbs/
Day
Lbs-’
Day
Lbs/
Day
Lbs’
Day
Lbs/
Day
Lbs/
Day
Lbs'
Day
Lbs'
Day
Lbs/
Day
Lbs'
Day
Lbs/
Day
Lbs.’
Day
Lbs'
Day
Lbs’
Day
Lbs/
Day
Lbs/
Day
Lbs/
Day
Lbs'
Day
Lbs'
Day
Lbs/
Day
Lbs/
Day
Lbs/
Day
Number
of
Samples
ANALYTICAL
METHOD
2,4,6-
TRICHLOROPHENOL
Lbs/'
Day
Lbs/
Day
Lbs'
Day
Lbs/
Day
Lbs'
Day
Lbs/
Day
Lbs/
Day
Lbs'
Day
Lbs'
Day
1,1,1-
TRICHLOROETHANE
1.1.2-
TRICHLOROETHANE
Lbs/
Day
Lbs'
Day
Lbs/
Day
Lbs/
Day
Lbs/
Day
I frS,
PERMIT ACTION REQUESTED:RIVER BASIN:FACILITY NAME AND PERMIT NUMBER:
I RoanokeJC0024201sndard Renews"ioke Rive
(Complete once for each outfall discharging effluent to waters of the United States.)Outfall number:>01
I AVERAGE DAILY DISCHARGEMAXIMUM DAILY DISCHARGE
ML/MDLPOLLUTANT
Cone.Units Mass UnitsMass UnitsCone.Units
10EPA 625Ug/L :.31Ug/L <.325 3Day
10EPA 6253<10 <.314<.325 Ug/LUg/LBENZO(GHI)PERYLENEI EPA 625 103<.314clOUg/LUg/L
EPA 625 103<314<10 Ug/L<.32510
10EPA 625<.314c.325 <10 Ug/LUg/L Day
I 10EPA 6253<10 Ug/L <.314<325<10 Ug/L
103EPA 625<.314<.325 <10 Ug/L<10 Ug/LI 10EPA 6253Ug/L <314<325 <10<10 Ug/L
103EPA 625Ug/L<.325 <10<10 Ug/L
10EPA 6253Ug/L <314<.325 <10<10 Ug/L DayILbs/10EPA 6253<.314<.325 <10 Ug/LUg/L
10EPA 6253<.314<10 Ug/LUg/L <.325<10CHRYSENE Day
10EPA 6253<.314Ug/L <.325 <10 Ug/L<10DI-N-BUTYL PHTHALATE
10EPA 6253<314Ug/L <.325 <10 Ug/L10DI-N-OCTYL PHTHALATE
10EPA 6253<314<10 Ug/L<.325<10 Ug/L
10EPA 6253Ug/L <.314<.325 <10<10 Ug/L1,2-DICHLOROBENZENE
EPA 6253<.314Ug/L <.325 <10 Ug/L<101,3-DICHLOROBENZENE
10EPA 6253<.314Ug/L<.325 <10Ug/L1,4-DICHLOROBENZENE <10
I 50EPA 625<50 Ug/L <1 57<1 63<50 Ug/L
103EPA 625Ug/L <.314<.325 <10<10 Ug/LDIETHYL PHTHALATE
10EPA 625<.314 3<10 Ug/L<.325<10 Ug/LDIMETHYL PHTHALATE
3 EPA 625<314Ug/L<.325 <10<10 Ug/L I u2,4-DINITROTOLUENE
I 103EPA 625<.314<10 Ug/LUg/L <.325<102,6-DINITROTOLUENE
10EPA 6253Ug/L <.314<10Ug/L <.325I<10
Page 14 of 27EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22.
Lbs^
Day
Number
of
Samples
Lbs.
Day
Lbs/
Day
Lbs'
Day
Lbs.'
Day
1,2-DIPHENYL-
HYDRAZINE
Lbs/
Day
Lbs'
Day
Lbs/
Day
Lbs'
Day
Lbs'
Day
Lbs/
Day
Lbs'
Day
Lbs;
Day
Lbs'
Day
Lbs/
Day
Lbs/
Day
Lbs/
Day
Lbs'
Day
Lbs/
Day
Lbs'
Day
Lbs/
Day
Lbs/
Day
Lbs/
Day
Lbs/
Day
ANALYTICAL
METHOD
3,4 BENZO­
FLUORANTHENE
BENZO(K)
FLUORANTHENE
BIS (2-CHLOROETHOXY)
METHANE
BIS (2-CHLOROETHYL)-
ETHER
BIS (2-CHLOROISO-
PROPYL) ETHER
4-BROMOPHENYL
PHENYL ETHER
BIS (2-ETHYLHEXYL)
PHTHALATE
2-CHLORO-
NAPHTHALENE
4-CHLORPHENYL
PHENYL ETHER
BUTYL BENZYL
PHTHALATE
DIBENZO(A.H)
ANTHRACENE
3,3-DICHLORO-
BENZIDINE
Lbs/
Day
Lbs/
Day
Lbs'
Day
Lbs/
Day
Lbs'
Day
Lbs/
Day
Lbs.’
Day
Los?
Day
Lbs/
Day
Lbs/
Day
Lbs;
Day
Lbs/
Day
Lbs'
Day
Lbs/
Day
Lbs;
Day
Lbs/
Day
Lbs/
Day
Lbs/
Day
Lbs/
RIVER BASIN:PERMIT ACTION REQUESTED:
RoanokeStandard RenewalI
Outfall number:
MAXIMUM DAILY DISCHARGE
ML/MDLPOLLUTANTUnitsMassUnitsCone.UnitsMassUnitsCone.
I 10EPA 6253c.314Ug/L<.325Ug/LFLUORANTHENE
10ERA 6253<.314Ug/L<10<.325Ug/L<10FLUORENE
10EPA 6253<.314Ug/L<10<.32510HEXACHLOROBENZENE
10EPA 6253<.314Ug/L<10<.325ug/L Day
50EPA 6253<1.57<50 Ug/L<1 63Ug/L50
I 10EPA 6253<.314Ug/L<10<.325<10 Ug/LHEXACHLOROETHANE Day
10EPA 6253<.314Ug/L<10<.325Ug/L<10
I 10EPA 6253<.314Ug/L<10<.325Ug/L<10ISOPHORONE
10EPA 6253<.314Ug/L<10<.325<10 Ug/LNAPHTHALENE
10EPA 6253<314<10 Ug/L<.325Ug/L<10NITROBENZENE
10EPA 6253Ug/L <.314<10<.325Ug/L<10
10EPA 6253Ug/L <.314<10<.325Ug/L<10
I 10EPA 6253<.314Ug/L<10<325Ug/L<10
10EPA 6253<.314Ug/L<10<.325Ug/L<10PHENANTHRENEI 10EPA 6253<.314Ug/L<10<.325Ug/L<10PYRENE
10EPA 6253<.314<10 Ug/L<.325Ug/L<10
Use this space (or a separate sheet) to provide information on other pollutants (e.g pesticides) requested by the permit wri3ter
I
I
I Page 15 of 27EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22.
__
Use this space (or a separate sheet) to provide information on other base-neutral compounds requested by the permit wr3iter
(Complete once for each outfall discharging effluent to waters of the United States.)
AVERAGE DAILY DISCHARGE
FACILITY NAME AND PERMIT NUMBER:
Roanoke River WWTP, NC0024201
HEXACHLORO­
BUTADIENE
HEXACHLOROCYCLO-
PENTADIENE
INDENO(1,2,3-CD)
PYRENE
N-NITROSODI-N-
PROPYLAMINE
N-NITROSODI-
METHYLAMINE
N-NITROSODI-
PHENYLAMINE
Lbs'
Day
Lbs/
Day
Lbs-
Day
Lbs/
Day
Lbs'
Day
Lbs-
Day
Lbs/'
Day
Lbs'
Day
Lbs/
Day
Lbs/
Day
Lbs/
Day
Lbs/
Day
LDS.
Day
Lbs/
Day
Lbs'
Day
Lbs'
Day
Lbs'
Day
Number
of
Samples
ANALYTICAL
METHOD
END OF PART D.33
REFER TO THE APPLICATION OVERVIEW (PAGE 1) TO DETERMINE WHICH OTHER PARTS
OF FORM 2A YOU MUST C3OMPLETE
Lbs/
Day
Lbs'
Day
Lbs'
Day
Lbs/
Day
Lbs/
Day
Lbs/
Day
1.2.4-
TRICHLOROBENZENE
LbS'
Day
Lbs/
Day
Lbs'
Day
Lbs'
Day
Lbs'
Day
Lbs/
Day
Lbs/
Day
RIVER BASIN:
I MC00242(Roanoke
SUPPLEMENTAL APPLICATION INFORMATION
PART E. TOXICITY TESTING DATA
See attached toxicity test results. Also, refer to E.4 for submittal details
E.l. Required Tests.
Indicate the number of whole effluent toxicity tests conducted in the past four and one-half years.
chronic acute
Test number:Test number:Test number:
Test information.a.
Test Species & test method number
Age at initiation of test
Outfall number
Dates sample collected
Date test started
Duration
b. Give toxicity test methods followed.
Manual title
Edition number and year of publication
Page number(s)
I Give the sample collection method(s) used. For multiple grab samples, indicate the number of grab samples used.c.
24-Hour composite
Grab
d.Indicate where the sample was taken in relation to disinfection. (Check all that apply for each.
Before disinfection
I After disinfection
After dechlorination
I EPA Form 3510-2A (Rev. 1-99). Replaces ERA forms 7550-6 & 7550-22.Page 16 of 27
E.2. Individual Test Data. Complete the following chart for each whole effluent toxicity test conducted in the last four and one-half years. Allow one
column per test (where each species constitutes a test). Copy this page if more than three tests are being reported.
FACILITY NAME AND PERMIT NUMBER:
Roanoke River '7VWTF
PERMIT ACTION REQUESTED:
Standard Renewal
POTWs meeting one or more of the following criteria must provide the results of whole effluent toxicity tests for acute or chronic toxicity for each of the facility’s
discharge points: 1) POTWs with a design flow rate greater than or equal to 1.0 mgd; 2) POTWs with a pretreatment program (or those that are required to have
one under 40 CFR Part 403); or 3) POTWs required by the permitting authority to submit data for these parameters.
• At a minimum, these results must include quarterly testing for a 12-month period within the past 1 year using multiple species (minimum of two
species), or the results from four tests performed at least annually in the four and one-half years prior to the application, provided the results show no
appreciable toxicity, and testing for acute and/or chronic toxicity, depending on the range of receiving water dilution. Do not include information on
combined sewer overflows in this section. All information reported must be based on data collected through analysis conducted using 40 CFR Part 136
methods. In addition, this data must comply with QA/QC requirements of 40 CFR Part 136 and other appropriate QA/QC requirements for standard
methods for analytes not addressed by 40 CFR Part 136.
• In addition, submit the results of any other whole effluent toxicity tests from the past four and one-half years. If a whole effluent toxicity test conducted
during the past four and one-half years revealed toxicity, provide any information on the cause of the toxicity or any results of a toxicity reduction
evaluation, if one was conducted.
• If you have already submitted any of the information requested in Part E, you need not submit it again. Rather, provide the information requested in
question E.4 for previously submitted information. If EPA methods were not used, report the reasons for using alternate methods. If test summaries
are available that contain all of the information requested below, they may be submitted in place of Part E.
If no biomonitoring data is required, do not complete Part E. Refer to the Application Overview for directions on which other sections of the form to complete.
I
I
Test number:Test number:Test number:
Describe the point in the treatment process at which the sample was collected.e.
Sample was collected:
I f. For each test, include whether the test was intended to assess chronic toxicity, acute toxicity, or both
Chronic toxicity
Acute toxicity
Provide the type of test performed.g-
Static
Static-renewal
I Flow-through
Laboratory water
Receiving water
I i. Type of dilution water. If salt water, specify "natural” or type of artificial sea salts or brine used.
Fresh water
Salt water
j. Give the percentage effluent used for all concentrations in the test series.
Parameters measured during the test. (State whether parameter meets test method specifications)k.
pH
Salinity
Temperature
Ammonia
I Dissolved oxygen
Test Results.I.
Acute:
LC50
95% C.l.
I Control percent survival
Other (describe)
Page 17 of 27EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22.
FACILITY NAME AND PERMIT NUMBER:
Roanoke River WWTP, NC0024201
Percent survival in 100%
effluent
PERMIT ACTION REQUESTED:
Standard Renewal
RIVER BASIN:
Roanoke
h. Source of dilution water. If laboratory water, specify type; if receiving water, specify source.
I
Chronic:
NOEC
IC25
Control percent survival
Other (describe)
m. Quality Control/Quality Assurance.
Is reference toxicant data available?
IIIIII
Other (describe)
E.3. Toxicity Reduction Evaluation. Is the treatment works involved in a Toxicity Reduction Evaluation?I If yes, describe:□ Yes No
E.4.I
(MM/DD/YYYY)/ /Date submitted:I (MM/DD/YYYY)/ / .Date submitted:
(MM/DD/YYYY)/ /Date submitted:I
Summary of results: (see instructions)
I and PrimaryWET testing results
Species were submitted in August and September. September and October results tor WET testi upon
I ipletion. They will not be available until after submittal deadline for this application.
I
Page 18 of 27EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22.
FACILITY NAME AND PERMIT NUMBER:
Roanoke River WWTP, NC002^201
Was reference toxicant test within
acceptable bounds?
PERMIT ACTION REQUESTED:
Standard Renewal
RIVER BASIN:
Roanoke
What date was reference toxicant test
run (MM/DD/YYYY)?
END OF PARTE.
REFER TO THE APPLICATION OVERVIEW (PAGE 1) TO DETERMINE WHICH OTHER PARTS
OF FORM 2A YOU MUST COMPLETE.
wete submitted in July, WET testing results for Se
Summary of Submitted Biomonitoring Test Information. If you have submitted biomonitoring test information, or information regarding the
cause of toxicity, within the past four and one-half years, provide the dates the information was submitted to the permitting authority and a summary
of the results.
I SUPPLEMENTAL APPLICATION INFORMATION
F.2.
1Number of non-categorical SIUs.a.
2 'includes 'i pending Categorical)Number of CIUs.b.
Supply the following information for each SIU.
I Reser s Fine Foods Name:
11251 Hwy 903Mailing Address:
I Halifax, NC 27839
Industrial Processes. Describe all the industrial processes that affect or contribute to the SIU’s discharge.F.4.
I
F.5.
Cold sala Principal product(s):
Cabbage Pa Raw material(s):
Flow Rate.F.6.
Process wastewater flow rate.a.
250,000
b.
intermittent)N/Acontinuous or( 9PdN/A
F.7.
Local limitsa.
NoYesb.
Page 19 of 27ERA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22.
FACILITY NAME AND PERMIT NUMBER:
Roanoke River WWTP, NC0024201
Categorical pretreatment standards
If subject to categorical pretreatment standards, which category and subcategory?
RIVER BASIN:
Roanoke
Pretreatment Standards. Indicate whether the SIU is subject to the following:
S Yes No
Indicate the average daily volume of process wastewater discharge into the collection system in gallons per
day (gpd) and whether the discharge is continuous or intermittent.
PERMIT ACTION REQUESTED:
Standard Renewal
F.1. Pretreatment program. Does the treatment works have, or is subject to, an approved pretreatment program?
R] Yes No
Number of Significant Industrial Users (SIUs) and Categorical Industrial Users (CIUs). Provide the number of each of the following types of
industrial users that discharge to the treatment works.
Food processing—---------------------------------------------------------------
Principal Product(s) and Raw Material(s). Describe all of the principal processes and raw materials that affect or contribute to the SIU’s
discharge.
PART F. INDUSTRIAL USER DISCHARGES AND RCRA/CERCLA WASTES
All treatment works receiving discharges from significant industrial users or which receive RCRA.CERCLA, or other remedial wastes must
complete part F._________________
GENERAL INFORMATION: j
gpd (X continuous or intermittent)
Non-process wastewater flow rate. Indicate the average daily volume of non-process wastewater flow discharged into the collection system
in gallons per day (gpd) and whether the discharge is continuous or intermittent.
SIGNIFICANT INDUSTRIAL USER INFORMATION:
Supply the following information for each SIU. If more than one SIU discharges to the treatment works, copy questions F.3 through F.8 and
provide the information requested for each SIU.__ __________________
F.3. Significant Industrial User Information. Provide the name and address of each SIU discharging to the treatment works. Submit additional pages
as necessary.
I
F.8.
I
N/A
I
RCRA Waste.F.9.
No (go to F.12) Yes
Dedicated Pipe
UnitsERA Hazardous Waste Number
N/AN/AN/A
N/AN/AN/A
N/A N/A
CERCLA (SUPERFUND) WASTEWATER, RCRA REMEDIATION/CORRECTIVE ACTION
F.12. Remediation Waste.
F.13. Waste Origin.
N/A
I F.14. Pollutants.
I N/A
F.15. Waste Treatment
Is this waste treated (or will be treated) prior to entering the treatment works?a.
No
N/A
b.
IntermittentContinuous
N/A
Page 20 of 27ERA Form 3510-2A (Rev. 1-99). Replaces ERA forms 7550-6 & 7550-22.
Is the discharge (or will the discharge be) continuous or intermittent?
If intermittent, describe discharge schedule.
PERMIT ACTION REQUESTED:
Standard Renewal
RIVER BASIN:
Roanoke
Yes (complete F.13 through F.15.) Ei No
Describe the site and type of facility at which the CERCLA/RCRA/or other remedial waste originates (or is excepted to origniate in
the next five years).
Problems at the Treatment Works Attributed to Waste Discharge by the SIU. Has the SIU caused or contributed to any problems (e g.,
upsets, interference) at the treatment works in the past three years?
Yes S No If yes, describe each episode.
Yes
If yes, describe the treatment (provide information about the removal efficiency):
List the hazardous constituents that are received (or are expected to be received). Include data on volume and concentration, if
known. (Attach additional sheets if necessary.)
RCRA HAZARDOUS WASTE RECEIVED BY TRUCK, RAIL, OR DEDICATED PIPELINE:
Does the treatment works receive or has it in the past three years received RCRA hazardous waste by truck, rail or dedicated pipe?
WASTEWATER, AND OTHER REMEDIAL ACTIVITY WASTEWATER:
Does the treatment works currently (or has it been notified that it will) receive waste from remedial activities?
FACILITY NAME AND PERMIT NUMBER:
Roanoke River WWTP, NC0024201
Truck Rail
F.11. Waste Description. Give EPA hazardous waste number and amount (volume or mass, specify units).
Amount
F.10. Waste transport. Method by which RCRA waste is received (check all that apply): N/A
SUPPLEMENTAL APPLICATION INFORMATION
PART F. INDUSTRIAL USER DISCHARGES AND RCRA/CERCLA WASTES
Dominion Rosemary Power StationName:
•120 West 12!tl Si. Mailing Address:
Roanoke Rapids, NC 27870
Industrial Processes. Describe all the industrial processes that affect or contribute to the SIU’s discharge.F.4.
Power Generation
F.5.
Steam Principal product(s):
N/A Raw material(s):
F.6.
c.
intermittent)continuous or
d.
intermittent)N/Acontinuous or 9Pd(
F.7.
YesLocal limitsa.
NoYesCategorical pretreatment standardsb.
If subject to categorical pretreatment standards, which category and subcategory?
40 CFR 423.17Pending Cate
Page 21 of 27EPA Form 3510-2A (Rev. 1-99) Replaces EPA forms 7550-6 & 7550-22.
FACILITY NAME AND PERMIT NUMBER:
Roanoke River WWTP, NC0024201
PERMIT ACTION REQUESTED:
Standard Renewal
RIVER BASIN:
Roanoke
Pretreatment Standards. Indicate whether the SIU is subject to the following:
No
Principal Product(s) and Raw Material(s). Describe all of the principal processes and raw materials that affect or contribute to the SIU’s
discharge.
Flow Rate.
Process wastewater flow rate. Indicate the average daily volume of process wastewater discharge into the collection system in gallons per
day (gpd) and whether the discharge is continuous or intermittent.
85.000 gpd c
Non-process wastewater flow rate. Indicate the average daily volume of non-process wastewater flow discharged into the collection system
in gallons per day (gpd) and whether the discharge is continuous or intermittent.
SIGNIFICANT INDUSTRIAL USER INFORMATION:
Supply the following information for each SIU. If more than one SIU discharges to the treatment works, copy questions F.3 through F.8 and
provide the information requested for each Sill ____________________________________________
F.3. Significant Industrial User Information. Provide the name and address of each SIU discharging to the treatment works. Submit additional pages
as necessary.
F.8.
N/A

F.9.
No (go to F.12)Yes
Waste transport Method by which RCRA waste is received (check all that apply): N/AF.10.
Dedicated PipeRailTruck
UnitsERA Hazardous Waste Number
N/A N/A
N/A N/A
N/A N/A
I
S No
F.13.
N/A
I F.14. Pollutants.
N/A
F.15. Waste Treatment
Is this waste treated (or will be treated) prior to entering the treatment works?c.
NoYes
If yes, describe the treatment (provide information about the removal efficiency):
N/A
d.
IntermittentContinuous
N/A
SUPPLEMENTAL APPLICATION INFORMATION
I Page 22 of 27EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22
Is the discharge (or will the discharge be) continuous or intermittent?
If intermittent, describe discharge schedule.
RIVER BASIN:
Roanoke
RIVER BASIN:
Roanoke
J Yes (complete F.13 through F.15.)
Waste Origin. Describe the site and type of facility at which the CERCLA/RCRA/or other remedial waste originates (or is excepted to origniate in
the next five years).
List the hazardous constituents that are received (or are expected to be received). Include data on volume and concentration, if
known. (Attach additional sheets if necessary.)
Problems at the Treatment Works Attributed to Waste Discharge by the SIU. Has the SIU caused or contributed to any problems (e g.,
upsets, interference) at the treatment works in the past three years?
Yes No If yes, describe each episode.
PERMIT ACTION REQUESTED:
Standard Renewal
PERMIT ACTION REQUESTED:
Standard Renewal
FACILITY NAME AND PERMIT NUMBER:
Roanoke River WWTP, NC0024201
F.11. Waste Description. Give EPA hazardous waste number and amount (volume or mass, specify units).
Amount
RCRA HAZARDOUS WASTE RECEIVED BY TRUCK, RAIL, OR DEDICATED PIPELINE: '
RCRA Waste. Does the treatment works receive or has it in the past three years received RCRA hazardous waste by truck, rail or dedicated pipe?
FACILITY NAME AND PERMIT NUMBER:
Roanoke River WWTP, NC0024201
CERCLA (SUPERFUND) WASTEWATER. RCRA REMEDIATION/CORRECTIVE ACTION L ''=
WASTEWATER, AND OTHER REMEDIAL ACTIVITY WASTEWATER:
F.12. Remediation Waste. Does the treatment works currently (or has it been notified that it will) receive waste from remedial activities?
PART F. INDUSTRIAL USER DISCHARGES AND RCRA/CERCLA WASTES
SIGNIFICANT INDUSTRIAL USER INFORMATION:
Kennametai Inc. Name:
100 Kennametai Rd.Mailing Address:
Weldon, NC 27890
Industrial Processes. Describe all the industrial processes that affect or contribute to the Sill’s discharge.F.4.
and machine tool accessc
F.5.
Machine ToolsPrincipal product(s):
iqsten Carbide Powder. Ceramic PowderRaw material(s):
F.6.Flow Rate.
e.
intermittent)continuous orc
f.
intermittent)continuous or gpd(
Pretreatment Standards. Indicate whether the SIU is subject to the following:F.7.
I Yes NoLocal limitsa.
Yes NoCategorical pretreatment standardsb.
If subject to categorical pretreatment standards, which category and subcategory?
40 CFR 471 Subpart J
Page 23 of 27ERA Form 3510-2A (Rev. 1-99). Replaces ERA forms 7550-6 & 7550-22.
Principal Product(s) and Raw Material(s). Describe all of the principal processes and raw materials that affect or contribute to the SIU’s
discharge.
Process wastewater flow rate. Indicate the average daily volume of process wastewater discharge into the collection system in gallons per
day (gpd) and whether the discharge is continuous or intermittent.
30,00:.' gpd
Non-process wastewater flow rate. Indicate the average daily volume of non-process wastewater flow discharged into the collection system
in gallons per day (gpd) and whether the discharge is continuous or intermittent.
Supply the following information for each SIU. If more than one SIU discharges to the treatment works, copy questions F.3 through F.8 and
provide the information requested for each SIU.
F.3. Significant Industrial User Information. Provide the name and address of each SIU discharging to the treatment works. Submit additional pages
as necessary.
F.8.
If yes, describe each episode.
N/A
RCRA HAZARDOUS WASTE RECEIVED BY TRUCK, RAIL, OR DEDICATED PIPELINE:
F.9.RCRA Waste. Does the treatment works receive or has it in the past three years received RCRA hazardous waste by truck, rail or dedicated pipe?
Yes No (go to F.12)
F.10. Waste transport Method by which RCRA waste is received (check all that apply): N/A
I Truck Rail Dedicated Pipe
Amount Units
N/A
N/A N/A N/A
hj/A N/A
F.12. Remediation Waste. Does the treatment works currently (or has it been notified that it will) receive waste from remedial activities?
Yes (complete F.13 through F.15.)No
N/A
N/A
F.15. Waste Treatment
Is this waste treated (or will be treated) prior to entering the treatment works?e.
□ Yes IX) No
If yes, describe the treatment (provide information about the removal efficiency):
f.Is the discharge (or will the discharge be) continuous or intermittent?
Continuous Intermittent If intermittent, describe discharge schedule.
N/A
I
ERA Form 3510-2A (Rev. 1-99). Replaces ERA forms 7550-6 & 7550-22.Page 24 of 27
FACILITY NAME AND PERMIT NUMBER:
Roanoke River WWTP, NC0024201
END OF PART F.
REFER TO THE APPLICATION OVERVIEW (PAGE 1) TO DETERMINE WHICH OTHER PARTS
OF FORM 2A YOU MUST COMPLETE
Problems at the Treatment Works Attributed to Waste Discharge by the SIU. Has the SIU caused or contributed to any problems (e g.,
upsets, interference) at the treatment works in the past three years?
Yes No
PERMIT ACTION REQUESTED:
Standard Renewal
RIVER BASIN:
Roanoke
CERCLA (SUPERFUND) WASTEWATER, RCRA REMEDIATION/CORRECTIVE ACTION
WASTEWATER, AND OTHER REMEDIAL ACTIVITY WASTEWATER:
F.13. Waste Origin. Describe the site and type of facility at which the CERCLA/RCRA/or other remedial waste originates (or is excepted to origniate in
the next five years).
F.14. Pollutants. List the hazardous constituents that are received (or are expected to be received). Include data on volume and concentration, if
known. (Attach additional sheets if necessary.)
F.11. Waste Description. Give ERA hazardous waste number and amount (volume or mass, specify units).
EPA Hazardous Waste Number
RoanokeNC0024201
SUPPLEMENTAL APPLICATION INFORMATION
PART G. COMBINED SEWER SYSTEMS
If the treatment works has a combined sewer system, complete Part G.
System Map. Provide a map indicating the following: (may be included with Basic Application Information) N/AG.1.
a.
b.
c.
a.
I b.
c.
Locations of flow-regulating devices.d.
I Locations of pump stations.e.
CSO OUTFALLS:
Complete questions G.3 through G.6 once for each CSO discharge point
G.3. Description of Outfall. N/A
Outfall numbera.
Locationb.
(Zip Code)(City or town, if applicable)
I (State)(County)
(Longitude)(Latitude)
ft.Distance from shore (if applicable)c.
ft.d.
e.
CSO frequencyCSO pollutant concentrationsRainfall
Receiving water qualityCSO flow volume
How many storm events were monitored during the last year?f.
G.4. CSO Events. N/A
Give the number of CSO events in the last year.a.
events ( actual or approx.)
Give the average duration per CSO event.b.
( actual or approx.)hours
I
Page 25 of 27EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22.
i «-»■ ■ *— ■ Kania ■ ■ i\/iaia>rf»_i
Roanoke River WWTF
All CSO discharge points.
Sensitive use areas potentially affected by CSOs (e.g., beaches, drinking water supplies, shellfish beds, sensitive aquatic ecosystems, and
outstanding natural resource waters).
Waters that support threatened and endangered species potentially affected by CSOs.
Standard Renewal
G.2. System Diagram. Provide a diagram, either in the map provided in G.1 or on a separate drawing, of the combined sewer collection system that
includes the following information. N/A
Location of major sewer trunk lines, both combined and separate sanitary.
Locations of points where separate sanitary sewers feed into the combined sewer system.
Locations of in-line and off-line storage structures.
Depth below surface (if applicable)
Which of the following were monitored during the last year for this CSO?
c.
d.
Description of Receiving Waters. N/AG.5.
Name of receiving water:a.
Name of watershed/river/stream system:b.
United State Soil Conservation Service 14-digit watershed code (if known):
Name of State Management/River Basin:c.
United States Geological Survey 8-digit hydrologic cataloging unit code (if known):
I Page 26 of 27EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22.
FACILITY NAME AND PERMIT NUMBER:
Roanoke River WWTP, NC0024201
END OF PART G.
REFER TO THE APPLICATION OVERVIEW (PAGE 1) TO DETERMINE WHICH OTHER PARTS
OF FORM 2A YOU MUST COMPLETE.
Give the average volume per CSO event.
million gallons ( actual or J approx.)
PERMIT ACTION REQUESTED:
Standard Renewal
RIVER BASIN:
Roanoke
Give the minimum rainfall that caused a CSO event in the last year
Inches of rainfall
G.6. CSO Operations. N/A
Describe any known water quality impacts on the receiving water caused by this CSO (e.g., permanent or intermittent beach closings, permanent or
intermittent shell fish bed closings, fish kills, fish advisories, other recreational loss, or violation of any applicable State water quality standard).
Additional information, if provided, will appear on the following pages.
Attached Figures:
Topographic Map
Plant Site Plan
I Plant Flow Schematic
Process Narrative
Attachments:
A: Letter from Contract Laboratory re: 2013 PPA
B: Whole Effluent Toxicity Results
C: Hardness Testing Data
D: Biosolids Program Description
E: Technical Memo in support of RMF
F: Mercury Minimization Plan Summary
I
I
NPDES FORM 2A Additional Information
Please note that for the 2013 Priority Pollutant Scan, Volatile Organic Compounds Section, the
sample analyzed with EPA 624 had to be diluted by a factor of 10 due to foaming. Due to the
dilution, the results could not be reported less than the normal detection level, but less than 10
times the detection level, thus increasing the maximum daily discharge concentrations, daily
maximum masses, the average daily concentrations, and the average daily masses. Attached is a
letter to support this information from the contract laboratory.
I
Attached Figures
I
I
I
Roanoke Rapids Sanitary District - NC0024201
Not to Scale
USGS Quad Name: Weldon
Receiving Stream: Roanoke River
Stream Class: C
Subbasin: Roanoke - 030208
Lat: 36°26’10”
Long: 77°36’04”
Facility
Location
V \ \
*_
C.,--, _
Zu/ •7/’A' • bi n ■
• Weldomi
(Si
©I]
©
I
w
I i Ii
1
©
F
I
<s>
m
i
B
B
1
I
flI?
h ia
il3
Bass5S5„s^ssls?s^^^!^^^|»-yjy--j
! H iiisO !< ! h ,‘prr,'E
1 3is i rI if* if 1 S'M “I I b! ’ I
i
©®o
©©
©
©
©
a
©
©
i|S
s
_M !
-----1 f------HI
©r-^L^
I
©
I
-------------------| WFUIEHT EQUMJZAPW |-
Q-
£
PRMARY StUDGE Q = 0.0086
J WAS Q = 0,044ee
SUPERNATANT
L_
LAND APP1JCATI0n|
SUPERNATANT.SUPERNATANT -®
LEGEND
NORMAL OPERATION
-----INTERMITTENT OPERATION
SAMPUHG POINTPT.
PLANT FLOW SCHEMATIC
SEPTEMBER 2016
H
J I
ROANOKE RAPIDS SANITARY DISTRICT
WASTEWATER TREA^ENT PLANT
MANUAL
BAR SCREENCHOCXOYOTTE
CREEK OUTFALL
DIVER90N
BOX
DIVERSION TO
ROANOKE RIVER
MECHANICAL
BAR SCREEN
PRIMARY SLUDGE
PUMP STATION
GRIT
CHAMBERS
RAS PUMP
STATION
ANAL
CLARF1ERS
WAS
PUMP STATION
2 PUMPS
2 PRIMARY
ANAEROBIC
DIGESTERS
WAS GRAVITY
THICKENERS
1 SECONDARY
ANAEROBIC
DIGESTER
WAS DRUM
THICKENER
FILTER
RECIRCULATION
PUMP STATION
3 PUMPS
0 3 MOD EACH
UME
STABUZATION -
FACUJTY
I
I
I
ALTER EFFLUENT B.34 MGO
PUMP STATION -----------
4 PUMPS
CAUSTIC
FEED
Q IN =
8.34 MGO
0 -
17.34 MGO
I
II
OVERFLOW TO
ROANOKE RIVER
STORM WATER
PUMP STATION
--------1
I
I
PUMPED TO
CHOCKYOTTE
CREEK
PT. 4
dj DIGESTED SLUDGE
DIGESTED SLUDGE
I
I
I
I
I
I
PRIMARY
CLARIHERS
I
I
I
I
I
I
_L_
TRICKLING
ALTERS
FLOOD
PUMP STATION
3 PUMPST
PUMPED
DISCHARGE TO
ROANOKE RIVER
WHEN d > 25.000 CFS
PT. 5
Jr4
I ACID------1
| FKD f
I
SLUDGE DRYING BEDS (2)
TT”
I
I
I
I
____I
________ PT. 3
| BLOWERS | I
'^TL-
AERATION
TANKSRIVER OUTFALL7T
I
I
I
I
I
I
I
I
L_
TiI*
SLUDGE
HOLDING -
TANKS
INFLUENT
- PUMP STADON
4 PUMPS—
I
1 r-**
I
GRAVITY
OVERFLOW TO
CHOCKYOTTE
CREEK
PT. 2
1-^ | aa ""
METERING [ Q = 8.34 MGO
(2) DRAINAGE FROM-----,
DRYING BEDS
(T) DIGESTER --------- |SUPERNATANT j
IH
I
Process Narrative
I
I
I
I
I
Influent flow enters the Roanoke River Waste Treatment Plant via two outfalls: The Roanoke
River Outfall and Chockoyotte Creek Outfall. Both outfalls combine in a collection box prior to
mechanical screening and grit removal. Influent flow may be routed to influent equalization,
when necessary. The influent wastewater is lifted via an influent pump station to primary
clarifiers. Primary clarified effluent gravity flows to trickling filters. Trickling filter effluent is
pumped to aeration basins for further secondary treatment. The mixed liquor then flows to
final clarifiers. Clarified effluent is then chlorinated and dechlorinated. Effluent flow is
measured prior to discharge to the Roanoke River. An effluent flood pump station is used to
pump effluent to the river when gravity flow may not be achieved.
Attach ment A
I
I
I
I
I
V
I
I
September 1,2016
- ' -r :
RE: Volatile Data Detection Limits - July 9,2013 Effluent sample
Dear Ms. Wilcoxon:
I
Laboratory ManagerI
Meritech, Inc.
Ph: 336 342 4748
Fax: [phone]
I
I
If you have any questions concerning this matter, please give me a call. We appreciate
your business and look forward to working with you in the future.
642 Tamco Road • P.O. Box 27 • Reidsville, NC 27320
[phone] • [phone] Fax
Ms. Isabelle Wilcoxon
Roanoke Rapids SD WWTP
135 Aquaduct Road
Weldon, NC 27870
MERITECH, INC.
ENVIRONMENTAL LABORATORIES
A Division of Water Technology and Controls, Inc.
Sincerely, =
Kris Pawlak
Due to considerable foaming (indicating presence of surfactants) of the above referenced
sample (Meritech Work Order # 07091-395) we were unable to achieve lower detection
Emits for the Method 624 organic analysis. This volatile sample required xlO dilution.
Foaming makes the purge and trap volatile analysis impossible because it damages the
trap and transfers water and foam into the instrument plumbing.
AttachmentB
I
I
I
I
I Date:8/24/2016
County: HalifaxNPDES # NCOO 24201Facility: Roanoke Rapids Sanitary District
Comments |
Laboratory: Meritech, Inc.
x
MAIL ORIGINAL TO:
ii L Test OrganismsAvg Wt/Surv. Control[0.7496:00 PM8/16/2016Test Initiation Date/Time
J% Survival f 97.5
8/15/16jAvg Wt (mg)F Hatch Date:0.728
3:00 PM% Survival[Hatch Time:97.5
I Avg Wt (mg)[0.642
% Survivalf 100.0
Avg Wt (mg)[I 0.691
% Survivalf 100.0
Avg Wt (mg)[0.721
]% Survival [100.02.2
]Avg Wt (mg)[0.730
% Survival [97.5
Avg Wt (mg)[0.770
]
at c
PI
1
8/15/2016
10
10
0.689
10
10
0.896
10
10
0.644
[ 0,55 | Surviving #
Original #
Wt/original (mg)
1 Surviving #
Original #
Wt/original (mg)
Water Quality Data
Control
pH (SU) IniVFin
DO (mg/L) Init/Fin
Temp (C) Init/Fin
Dilution H2O Batch#
Hardness (mg/L)
Alkalinity (mg/L)
Conductivity (umhos/cm)
| 0,275 | Surviving #
Original #
Wt/original (mg)
4.4 | Surviving #
Original #
Wt/original (mg)
High Concentration
pH (SU) IniVFin
DO (mg/L) IniVFin
Temp (C) IniVFin
1 | Surviving #
Original #
WVoriginal (mg)
Q Cultured In-House
E Outside Supplier
Normal
Hom. Var.
NOEC
LOEC
ChV
Method
I
0
8.10 / 7.59
7.93 / 6.74
25.3 / 25.1
0
7.83 / 7.63
7 91 / 7.01
25.0 / 24.7
1
10
10
0.733
9
10
0.454
10
10
0.690
10
10
0.755
10
10
0.763
10
10
0.698
1064
44
46
175
1
7,88 / 7.37
7.90 / 6.54
24.8 / 25.0
2
8/17/2016
2
9
10
0.772
10
10
0.535
10
10
0.742
10
10
0.788
10
10
0.777
9
10
0.756
1066
46
51
195
2
8.01 / 7.63
7.92 / 6.95
24.6 / 25.2
2
7.80 / 7.60
7.99 / 6.88
24.6 / 24.2
3
8/18/2016
3
10
10
0.760
10
10
0.684
10
10
0.661
10
10
0.703
10
10
0.870
10
10
0.681
10
10
0.676
10
10
0.757
Survival
Critical
10
10
10
10 ~
10
5
7.93 / 7.68
7.90 / 7,10
24.1 / 25.3
Calculated
18
20
20
20
18
6
8.01 / 7.80
7.98 / 7.06
24.1 / 24 3
6
7.95 / 7.62
8.05 / 7.16
24.2 / 24.3
%Eff. Repl.
[Control | Surviving #
Original #
WVoriginal (mg)
1063
48
47
197
1
7.87 / 7.41
7.91 / 6.40
24.8 / 25.0
1065
44
47
186
4
10
10
0.646
Stats
Cone.
0.275
0.55
1.1
2.2
4.4
4
8.10 / 7.65
8.10 / 6.98
24.2 / 24.9
Survival
Thn-
4.4
>4.4
>4.4
Steel's
24.3
92
77
657
<0.1
0.5
23 6
106
109
772
<0.1
0.9
23.7
104
95
691
<0.1
1.1
Growth
Fl
Fl
4.4
>4.4
>4.4
Dunnett's
Sample
Collection Start Date
Grab
Composite (Duration)
Hardness (mg/L)
Alkalinity (mg/L)
Conductivity (umhos/cm)
Chlorine(mg/L)
Temp, at Receipt (°C)Growth
Critical Calculated
2 41 1.2788
0.5459
2^I 0.0972
Z4i -0.0299
741 -0.6357
^^Iffluent Toxicity Report Form-Chronic Fathead Minnow Multi-Concentration Test
Pipe #:
3
7.99 / 7.80
7.96 / 7.56
25.2 / 24.7
5
7.94 / 7,66
7.93 / 6.93
24.2 / 24.8
4
7.98 / 7.79
8.11 / 7.16
24.3 / 24.8
Environmental Sciences Branch
Division of Water Quality
NC DENR
1621 Mail Service Center
Raleigh, NC 27699-1621
Signature of Operator in ResponsiblgT’Charge
Signature of Laboratory Supervisor
Overall Result
ChV | >4.4
Day
3
8.37 / 7.85
7.97 / 7.58
24.2 / 24.8
I-Date: 08/24/16Effluent Toxicity Report Form - Chronic Pass/Fail and Acute LC50
NPDES#: NC0024201 Pipe#: 001 County: HALIFAXFacility: ROANOKE RAPIDS SANITARY
Comments:
ator in Responsible Charge
I *
Work Order:
MAIL ORIGINAL TO:I
10 11 1268923457CONTROL ORGANISMS 1
Avg.Reprod.% Mortality
22242622222321# Young Produced 23 24 202421
L LAdult (Dive (D)ead L L L LLLLLLL
9 10 11 1256782341
FAILPASS
X23212123# Young Produced 20 22 20 24 21232724
Check One
Adult (L)ive (D)ead L L L L LL L L LLLL
1st sample 2nd sample1st sample
PH
8.17 7.91Control8.06 8.008.09 8.14
08/17/16
7.93 7.957.90 7.987.99 8.12Treatment 2
1st
DurationGrab.Comp.
24.3 hrsSample 1 X
23.6 hrsSample 2 X
Hardness(mg/1)46
7.607.39 8.137.58 8.088.03
Spec. Cond.(pmhos)772168657
8.11 7.627.478.16 7.63 8.15Treatment 2
Chlorine(mg/1)<0.1<0.1
Sample temp, at receipt(°C)0.90.5LC50/Acute Toxicity Test
(Mortality expressed as %, combining replicates)
Concentration%%%%%%%%%%
%%%%%%%%%%
start/end
Control
D.O.PH
Duration(hrs): Ceriodaphnia dubiaOrganism Tested:
Copied from DWQ form AT-1 (3/87)
!
i
I
North Carolina Ceriodaphnia
Chronic Pass/Fail Reproduction Toxicity Test
Method of Determination
Moving Average
Spearman Karber
Probit
Other
Chronic Test Results
Calculated t = 0.330
Tabular t = 2.508
% Reduction = 1.10
High
Cone.
I
Note: Please
Complete This
Section Also
22.42
Treatment 2
D
I
L
U
T
S
A
M
P
s
t
a
Environmental Sciences Branch
Div. of Water Quality
N.C. DENR
1621 Mail Service Center
Raleigh, North Carolina 27699-1621
0.00
Treatment 2
Control CV
7.366%
0.00
Control
22.67
Control
2nd
P/F
S
A
M
P
LC5 0 = %
95% Confidence Limits
% -- %
e
n
d
e
n
d
e
n
d
Mortality
start/end
t
1st sample
s
t
a
r
t
2nd sample
s
t
a
r
t
1st sample
Effluent %: 1.1%
TREATMENT 2 ORGANISMS
D.O.
Control
% control orgs
producing 3rd
brood
100%
I
X
Signature of Oi
Signature of Laboratory-Supervisor * PASSED: 1.10% Reduction
rev. 11/95 (DUBIA ver. 4.41)
Laboratory Performing Test: MERITECH LABS, INC.
Complete This For Either Test
Test Start Date: 08/17/16
Collection (Start) Date
Sample 1: 08/15/16 Sample 2:
Sample Type/Duration
Date:8/4/2016
County: Halifax
Facility: Roanoke Rapids Sanitary District
Laboratory: Meritech, Inc.
x
MAIL ORIGINAL TO:
0.742Avg Wt/Surv. Control5:32 PM7/26/2016Test Initiation Date/Time
100.0% Survival
7/25/16Hatch Date:0.742Avg Wt (mg)
Hatch Time: 3:00 pm ct% Survival [100.0
JAvg Wt (mg)[0.703
97.5% Survival
0.661Avg Wt (mg)
100.0% Survival
1.1
0.749Avg Wt (mg)
100.0% Survival
0.731Avg Wt (mg)
100.0% Survival
0.749Avg Wt (mg)
I
]%
I
DWQ Form AT-5 (1/04)
i
10
10
0.717
10
10
0.654
10
10
0.758
Water Quality Data
Control
pH (SU) Init/Fin
DO (mg/L) Init/Fin
Temp (C) Init/Fin
{ 0,275 | Surviving#
Original #
Wt/original (mg)
Dilution H2O Batch #
Hardness (mg/L)
Alkalinity (mg/L)
Conductivity (umhos/cm)
| 0.55 | Surviving #
Original #
Wt/original (mg)
2.2 | Surviving#
Original #
Wt/original (mg)
| 4,4 | Surviving#
Original #
Wt/original (mg)
j | Surviving #
Original #
Wt/original (mg)
High Concentration
pH (SU) Init/Fin
DO (mg/L) Init/Fin
Temp (C) Init/Fin
Test Organisms
Q Cultured In-House
Outside Supplier
Normal
Hom. Var.
NOEC
LOEC
ChV
Method
Environmental Sciences Branch
Division of Water Quality
NC DENR
1621 Mail Service Center
Raleigh, NC 27699-1621
0
7.76 / 7.73
7.54 / 7.42
24.6 / 24.6
1050
40
49
195
1
10
10
0.780
10
10
0.752
9
10
0.772
10
10
0.781
10
10
0.880
1051
46
49
174
1
7.91 / 7.65
7.63 I 6.79
24.3 / 24.6
1
7.91 / 7.65
7.73 / 6.68
24.3 / 24.9
1052
42
49
180
2
7/27/2016
2
10
10
0.713
10
10
0.664
10
10
0.637
10
10
0.701
10
10
0.695
1053
42
48
159
2
7.92 / 7.64
7.90 / 6.81
25.2 I 24.5
1054
42
49
181
3
10
10
0.722
10
10
0.707
10
10
0.514
10
10
0.815
10
10
0.693
4
10
10
0.751
10
10
0.689
10
10
0.722
10
10
0.698
10
10
0.793
10
10
0.729
Survival
Critical
10
10
10
10
10
5
7.94 I 7.71
7.61 I 7.35
24.8 I 24.6
Calculated
18
16
18
18
18
6
7.96 / 7.59
8.03 / 7.23
24.6 / 24.5
6
7.95 / 7.62
8.07 / 7.20
24.3 / 24.0
Growth
Critical Calculated
0.7712
1.6075
-0.1452
0.2203
-0.1552
2.41
2.41
2.41
2.41
2.41
0
8.19 / 7.81
7.72 / 7.49
24.4 / 24.2
1
7/25/2016
2
7.90 / 7.57
7.83 / 6.64
25.0 / 24.9
3
7/28/2016
Stats
Cone.
0.275
0.55
1.1
2.2
4.4
4
7.86 / 7.78
7.60 I 6.92
24.6 / 24.7
% Eff, Repl.
[Control | Surviving#
Original #
Wt/original (mg)
Signature g^pe^^^R^onsibl^^rge
Signature of Laboratory Supervisor
Commentsf
Growth
Fl
Fl
4.4
>4.4
>4.4
Dunnett's
Survival
Fl
Fl
4.4
>4.4
>4.4
Steel's
Sample
Collection Start Date
Grab
Composite (Duration)
Hardness (mg/L)
Alkalinity (mg/L)
Conductivity (umhos/cm)
Chlorine(mg/L)
Temp, at Receipt (°C)
4
7.84 / 7.77
7.59 I 6.70
25.1 I 24.5
3
7.87 / 7.63
7.81 / 6.71
25.3 / 24.5
5
7.93 / 7.77
7.14 I 7.57
24.4 / 24.0
24.4
110
100
660
<0.1
0.5
23.6
90
85
700
<0.1
1.0
23.2
90
80
591
<0.1
0.7
Effluent Toxicity Report Form-Chronic Fathead Minnow Multi-Concentration Test
NPDES # NC00 24201 Pipe .
I t) (
Overall Result
ChV | >4.4
Day_______
3
7,83 / 7.75
7.91 / 6.94
24.5 / 25.1
I
Date: 08/03/16Effluent Toxicity Report Form - Chronic Pass/Fail and Acute LC50
Facility: ROANOKE RAPIDS SANITARY
3 11
Work Order:
MAIL ORIGINAL TO:
10 11 1267891 2 3 4 5
Avg.Reprod.% Mortality
19 28 24 19 22# Young Produced 18 20 21 18181916
Adult (L)ive (D)ead L L L L L LLL L L LL
10 11 12678923451
PASS FAIL
X2326# Young Produced 24 24 26 16 152425252820
Check One
LAdult (L)ive (D)ead L L L D L LLLLLL
2nd sample1st sample1st sample
PH
7.85 8.05 7.78Control7.89 8.03 7.85
7.777.89 7.907.83 8.12 7.95Treatment 2
1st
DurationGrabComp.
24.4 hrsSample 1 X
24.8 hrsSample 2 X
Hardness(mg/1)46
7.72 7.727.97 7.477.95 7.41
Spec. Cond.(pmhos)591154660
7.697.40 7.767.99 7.45 7.84Treatment 2
Chlorine(mg/1)<0.1 <0.1
Sample temp, at receipt(°C)0.5 0.7LC50/Acute Toxicity Test
Concentration%%%%%%%%%%
%%%%%%%%%%
start/end
Control
D.O.PH
Duration(hrs):
Method of Determination
Moving Average
Spearman Karber
Probit
Other
Chronic Test Results
Calculated t = -1.906
Tabular t = 2.508
% Reduction = -14.05
High
Cone.
I
Note: Please
Complete This
Section Also
D
I
L
U
T
S
A
M
P
S
A
M
P
LC50 = %
95% Confidence Limits
% -- %
e
n
d
8.33
Treatment 2
Control CV
16.080%
0.00
Control
23.00
Treatment 2
20.17
Control
2nd
P/F
e
n
d
Environmental Sciences Branch
Div. of Water Quality
N.C. DENR
1621 Mail Service Center
Raleigh, North Carolina 27699-1621
e
n
d
001 County: HALIFAX
■ t
% control orgs
producing 3rd
brood
100%
Organism Tested:
Copied from DWQ form AT-1 (3/87)
Ceriodaphnia dubia
rev. 11/95 (DUBIA ver. 4.41)
passeM’:-
D.O.
Control
s
t
a
r
t
1st sample
s
t
a
r
t
1st sample
s
t
a
r
t
2nd sample
| (Mortality expressed as %, combining replicates)
Effluent %: 1.1%
|TREATMENT 2 ORGANISMS
North Carolina Ceriodaphnia
| Chronic Pass/Fail Reproduction Toxicity Test
CONTROL ORGANISMS
Mortality
start/end
X _________________________________
Signature of Operator in Responsible Chargex__r__^
Signature of Laboratory—S^ervisor
NPDES#: NC0024201 Pipe#: C__ ,Mg tg ig fr w g
Comments: ___
Complete This For Either Test
Test Start Date: 07/27/16
Collection (Start) Date
Sample 1: 07/25/16 Sample 2: 07/27/16
Sample Type/Duration
tU
:-14.0-5%- Reduction *
Laboratory Performing Test: MERITECH LABS, INC.
Date:7/7/2016Effluent Toxicity Report Form-Chronic Fathead Minnow Multi-Concentration Test
County: HalifaxPipe #: NPDES # NCOO 24201Facility: Roanoke Rapids Sanitary District
Comments|Laboratory: Meritech, Inc.
x
MAIL ORIGINAL TO:
I
Avg Wt/Surv. Control[Test Organisms0.5164:00 PM6/28/2016Test Initiation Date/Time
% Survival[100.0
6/27/16Avg Wt (mg)[Hatch Date:0.516
% Survival [Hatch Time:3:00 PM100.0
Avg Wt (mg)[0.589
% Survivalf 100.0
Avg Wt (mg)[0.573
% Survival[100.0[1.1
]Avg Wt (mg)[0.583
% Survival f 100.02.2
]Avg Wt (mg)[0.635
% SurvivalF 100.04.4
Avg Wt (mg)[0.657
I
DWQ Form AT-5 (1/04)
x___________________________
Signature of Laboratory Supervisor
1 Surviving #
Original #
Wt/original (mg)
Water Quality Data
Control
pH (SU) Init/Fin
DO (mg/L) Init/Fin
Temp (C) Init/Fin
Sample
Collection Start Date
Grab
Composite (Duration)
Hardness (mg/L)
Alkalinity (mg/L)
Conductivity (umhos/cm)
Chlorine(mg/L)
Temp, at Receipt (°C)
Dilution H2O Batch #
Hardness (mg/L)
Alkalinity (mg/L)
Conductivity (umhos/cm)
| 0,275 I Surviving #
Original #
Wt/original (mg)
| 0.55 | Surviving #
Original #
Wt/original (mg)
High Concentration
pH (SU) Init/Fin
DO (mg/L) Init/Fin
Temp (C) Init/Fin
j I Surviving #
Original #
Wt/original (mg)
r Cultured In-House
F Outside Supplier
J Surviving #
Original #
Wt/original (mg)
Environmental Sciences Branch
Division of Water Quality
NC DENR
1621 Mail Service Center
Raleigh, NC 27699-1621
Normal
Hom. Var.
NOEC
LOEC
ChV
Method
1039
46
44
170
0
7.85 / 7.69
8.10 / 6.95
24.3 / 25.9
0
7.84 / 7.68
8.12 / 6.85
24.4 / 25.7
10
10
0.616
10
10
0.583
10
10
0.630
10
10
0.630
10
10
0.565
1040
44
47
179
1041
42
51
182
1
8.09 / 7.78
7.96 / 7.00
24.1 / 24.4
1
7.99 / 7.67
7.97 / 6.62
24.3 / 25.1
2
6/29/2016
2
10
10
0.446
10
10
0.560
10
10
0.532
10
10
0.544
10
10
0.704
10
10
0.642
1042
40
42
172
2
8.05 / 7.98
7.80 / 7.95
24.3 / 25.4
3
6/30/2016
3
10
10
0.518
10
10
0.570
10
10
0.537
10
10
0.568
10
10
0.593
10
10
0.766
4
10
10
0.509
10
10
0.610
10
10
0.639
10
10
0.590
10
10
0.613
10
10
0.653
Survival
Critical
10
10
10
10
10
5
8.08 / 7.83'
7.89 / 7.26
24.2 / 25.2
Calculated
18
18
18
18
18
6
8.08 / 7.74
7.98 / 7.09
24.2 / 24.5
1
6/27/2016
1
10
10
0.592
23.2
94
115
560
<0.1
0.9
2
8.05 / 7.90
7.80 / 7.89
24.9 / 24.9
23.8
144
180
750
<0.1
0.9 Stats
Cone.
0.275
0.55
1.1
2.2
4.4
6
8.04 / 7.74
7 94 / 6.96
24.5 / 25.6
% Eff. Repl.
[Control | Surviving #
Original #
Wt/original (mg)
23.8
112
153
630
<0.1
1.1
4
8.21 / 7.83
7.85 / 7.03
24.7 / 25.4
Survival
Fl
Fl
4.4
>4.4
>4.4
Steel's
Growth
Critical Calculated
2.41 -1.9113
2.41 -1.4844
2.41 I -1.7537
2.41 -3.1198
2.41 -3.6847"
Growth
Fl
Fl
4,4
>4.4
>4.4
Dunnett's
3
8.10 / 7.91
8.32 / 7.25
25.0 / 24.6
4
8.15 / 7.87
7.88 / 7,11
24.7 / 25.7
5
7.99 / 7.84
7.83 / 7,08
25.0 / 25.2
Signature of Operator in Responsible Charge \ :
Overall Result
ChV [ >4.4
Day
3
8.00 / 7.90
8.21 / 7.29
24.3 / 24.5
Attach me nt C
I
Attachment C
DownstreamInfluentUpstreamDownstreamInfluentUpstream
92
32406852
96
3632
4372
44404856
4836
4036
3636
3240
3228
3232
I
116
64
72
64
60
68
64
60
96
148
56
144
108
76
76
142
62
52
88
128
104
128
112
68
68
68
52
Effluent
44
44
76
RRSD WWTP
HARDNESS MG/L
Date
9/8/2013 '
10/7/2013 '
11/4/2013
11/6/2013
12/2/2013
1/6/2014
2/3/2014
2/10/2014
3/3/2014
4/7/2014
4/8/2014
5/5/2014
6/2/2014
7/7/2014
7/8/2014
8/4/2014
9/8/2014
10/6/2014
10/13/2014
10/20/2014
11/3/2014
12/1/2014
1/5/2015
1/7/2015
Effluent
92
76
160
Date
2/2/2015 ~
3/2/2015
4/6/2015 '
4/21/2015 '
5/4/2015 '
6/1/2015 '
7/1/2015
7/6/2015
8/3/2015
9/1/2015
10/7/2015
10/12/2015
11/2/2015
12/7/2015
1/4/2016
1/6/2016
2/1/2016
3/9/2016
4/4/2016
4/5/2016
5/2/2016
6/6/2016
7/11/2016
8/1/2016
96
72
112
76
I
I
Attachment D
I
I
I
Attachment D
I
I
I
I
I
I
I
I
I
Biosolids Program
Roanoke Rapids Sanitary District
NPDES Permit No. NC0024201
Land Application Permit No. WQ0001989
At present, the District has permitted approximately 1,986 acres of farmland for residual
application including 91 acres owned by the District. Approximately 3.1 million gallons
of ~4% solids is applied to an estimated 300 acres per year. Soil pH is adjusted to
achieve a soil pH as specified by permit conditions.
The last plant addition, which provided treatment capacity, occurred in 1983; however,
several upgrades have been added since that date specifically for the solids program.
A system' to thicken WAS from the 0.5% solids range to the 3-4% solids range was
accomplished by the addition of two gravity thickeners and a drum concentrator. The
drum concentrator has since been replaced with a gravity belt thickener. Pathogen
reduction and Vector Attraction Reduction for WAS was accomplished by adding a lime
stabilization, mixing, and holding system to maintain proper pH control. Primary solids
are treated through three anaerobic digesters to meet 38% Volatile Solids Reduction
and Fecal destruction for VAR and PSRP with solids stored for liquid application.
Storage of treated solids was provided by the addition of an above ground 1.0 MG tank
for primary storage and by retrofitting two abandoned clarifiers adding 0.375 MG each
to provide a total of 1.75 MG for emergency storage. Sand drying beds are also
available to store solids in the event that liquid storage is unavailable.
The alkaline stabilization process and anaerobic digested primary sludge meets all
requirements for pathogen and vector attraction reduction for Class B biosolids.
Synagro Technologies, Inc. manages Land application of residuals. The Roanoke
Rapids Sanitary District holds the land application permit and provides a licensed ORC
and back-up ORC as required. Synagro Technologies, Inc. provides transport and
application equipment and personnel. District personnel perform ail treatment of
residuals.
Attachment E
I
I
I
I
I
Hazen
i
i
i
i
i
i
i
i
i
i
Page: 1/3
Reduction of Monitoring Frequency for Exceptionally Performing Facilities
Roanoke River Wastewater Treatment Plant
NPDES Permit NC0024201
In support of the National Pollutant Discharge Elimination System (NPDES) permit renewal, a monitoring
frequency reduction analysis was conducted on the Roanoke River Wastewater Treatment Plant (WWTP)
Discharge Monitoring Report (DMR) data between August 2013 and August 2016. The monitoring
frequency reduction analysis was performed in accordance with the Division of Water Resources (DWR)
guidance document, Reduction of Monitoring Frequencies in NPDES Permits for Exceptionally Performing
Facilities (October 2012).
The Roanoke River WWTP received a reduction in monitoring frequency for CBODs, ammonia, and fecal
coliform in the 2013 NPDES permit renewal. Table 1 provides a summary of DMR data from August 2013
through August 2016 that supports a continued reduction in the monitoring frequency for CBODs,
ammonia, and fecal coliform. The three-year arithmetic mean of effluent data is less than 50 percent of the
monthly permit limit for CBODs and fecal coliform. Less than 15 of the daily effluent sampling results are
over 200 percent of the monthly average limit for CBODs. Less than 20 of the effluent sampling results are
over 200 percent of the weekly average limit for fecal coliform. The Roanoke Rapids WWTP does not
have a permit limit for ammonia; however, the 3-year average effluent ammonia discharge is 3.9 mg/L with
a maximum discharge of 18 mg/L. Even though comparisons cannot be provided for the effluent ammonia
with respect to a permit limit, the high quality effluent supports a continued reduction in the monitoring
frequency for ammonia. The Excel Spreadsheet, NPDES Permit NC0024201 MRF.xls, contains the data
for the monitoring reduction frequency analysis. This spreadsheet will be transmitted to DWR upon
request.
Per DWR guidance, the following criteria has also been met by Roanoke Rapids Sanitary District.
• The Roanoke River WWTP received two Notices of Violation (NOV) and two Notices of
Deficiency between November 2013 and February 2014 for fecal coliform and total
suspended solids (TSS). The violations were due to a mechanical failure by the trickling
filter rotary distributors despite an ongoing maintenance schedule. The NOV did not
Hazen and Sawyer • 4011 WestChase Blvd, Suite 500 • Raleigh, NC 27607
Technical Memorandum
To. Copies:
Steven Ellis File
Gregg Camp
Isabelle Wilcoxin
Roanoke Rapids Sanitary District
From:
Tim Devine, PE / Mary Sadler, PE
Date:
September 15, 2016
Subject:
I
HazenI
I
I
TSSAmmoniaCBODs
38/ 100ml20.1 mg/L3.9 mg/L5.4 mg/L3-year average
317767312304Number of data points
200/ 100mL30.0 mg/LNo limit25.0 mg/LMonthly Average Permit limit
400/100mL45.0 mg/LNo limit37.5 mg/LWeekly Average Permit limit
19%67%22%Percent of permit limit
490
6
0I000
YesNoYes
I
I
I Page: 2/3
Number of daily samples over
200% of monthly average limit
Number of samples over 200% of
weekly average limit
The Roanoke River WWTP has met the requirements to be categorized as an Exceptionally Performing
Facility per DWR guidance and is eligible for a continued reduction in the monitoring frequency of CBODs,
ammonia, and fecal coliform bacteria.
Non-monthly average violations in
2016
result in any civil penalty assessments. The correspondence from the District responding
to the NOV is provided in Attachment 1.
• The District and Roanoke River WWTP employees have not been convicted of any
criminal violations of the Clean Water Act (CWA).
• The Roanoke River WWTP is not currently under a Special Order of Consent (SOC).
• The Roanoke River WWTP is not on EPA’s Quarterly Noncompliance Report for either
CBODs, ammonia, or fecal coliform.
Table 1: Summary of Monitoring Frequency Reduction Analysis for Roanoke River WWTP
Fecal coliform
Data in compliance with DWR
Guidance for Monitoring Frequency
Reduction?
1 Per Division of Water Resources Guidance Regarding the Reduction of Monitoring Frequencies in NPDES
Permits for Exceptionally Performing Facilities dated October 2012.
2 Analysis is representative of data from August 2013 through August 2016.
3 Maximum discharged effluent ammonia concentration of 18 mg/L over data penod.
Approval Criteria 2
Yes 3
Hazen
ATTACHMENT 1
I
I
Page: 3/3
Roanoke Rapids Sanitary District Response to Notice of Deficiency / Notice of Violation
NOD-2014-LV-0034, Case No.’s NOV-2014-LV-0190 and NOV-2014-LV-0191
Roanoke Rapids Sanitary District
June 6, 2014
Re:
Dear Sir:
Mr. Danny Smith, Supervisor
North Carolina Division of Water Resources
1628 Mail Service Center
Raleigh, N. C. 27699-1628
NOTICE OF DEFICIENCY/NOTICE OF VIOLATION AND
RECOMMENDATION FOR ENFORCEMENT
NPDES #NC0024201
Roanoke River WWTP
NOD-2014-LV-0034
Case No. NOV-2014-LV-0190
Case No. NOV-2014-LV-0191
Halifax County
P.O. Box 308
1000 Jackson Street
Roanoke Rapids, NC 27870
[phone]
Fax: [phone]
www.nrsd.org
CERTIFIED MAIL 7010 3090 000 3778 0494
RETURN RECEIPT REQUESTED
stainless were fitted with bottom load
was replaced at a cost of
Please be advised that all known remedial actions have been taken to correct problems
leading to the referenced action issued via your correspondence(s) dated April 23,2014 (2)
and April 22 2014. Attached for your reference is our November 2013 DMR, its
accompanying remedial actions report and resulting NOTICE OF DEFICIENCY NOD-
2014-LM-OOO1. We also request the following additional information is favorably
considered regarding the noted violation(s) and in support of our assertion of compliance
conformance:
BACKGROUND: The Roanoke Rapids Sanitary District (District) expends significant funds and
resources to maintain NPDES compliance. In the early to mid-2000's District budgeted in excess
of $250,000 to replace one of two Rotary Distributors followed by another $250,000-plus the
next fiscal year. The existing Distributors, installed in the early 1980's, were deteriorating from
the inside out despite being regularly painted over the years. This third set of distributors was
different from the original set installed in the early 1960's and the second set, of the early
1980's, in two major ways. First, rather than carbon steel the new units were fabricated from
stainless to negate the need for external painting and slow the internal deterioration process
and secondly, rather than top load bearings the new s.-------- ---
bearings. The bearing on the first installed Distributor failed and
$11,500 after only a few years of service.
I
I
I
I
I
o:\31181-ral\31181-COSVng’nomcdadmfo Itrdoc
The following year, the same failure occurred on the second installed Distributor. Hence,
remedial construction of the "new" Distributors was required. The District decided not to do
another bottom bearing repair. It was discovered the Distributors could be retrofitted with top
load bearings for around $175,000. It was decided to start with the second failed unit since the
first unit had already received a second lower bearing. Work actually began early even before
July Is’ FY14. The Distributor was removed and sent to the fabrication shop on June 20th, 2013.
NOTICE OF DEFICIENCY/NOTICE OF VIOLATION AND
RECOMMENDATION FOR ENFORCEMENT
NPDES #NC0024201
Roanoke River WWTP
NOD-2014-LV-0034
Case No. NOV-2014-LV-0190
Case No. NOV-2014-LV-0191
Halifax County
Page:
2/6
This condition led to bulking sludge. Wastewater was basically leaving the primary clarifiers
and entering the Secondary System with no buffering from the Trickling Filters. This resulted in
an organic overload of the Secondary System. Microscopic examination did not reveal excess
filamentous growth. Five minute MLSS settleabilites ran in the 950-990 range. Normally this
would be in the 400-600 range. To help bring the F/M ratio back into balance the wasting was
stopped. This increased the solids inventory in the Secondary System above what is normally
needed to run the system.
SUSPENDED SOLIDS MANAGEMENT: There is a polymer feed system set up ahead of the
Secondary Clarifiers. It is used periodically to control solids washout during high flows and to
help control alum sludge received from the water treatment plant. It has been on line
approximately 10 years. It is also used to help percent removal during wet weather events with
high flows that dilute influent solids to achieve better settling out effluent suspended solids.
This system has kept the wastewater plant compliant for solids reduction on numerous
The reinstall date was set for September 13th, 2013. This was good timing to get the first
retrofitted Distributor on line while conditions were suitable for zoogleal mass to restore
quicker. The second unit would be removed and retrofitted once the first unit recovered.
However, the unit was not installed until October 28, 2013 due to concealed damage; which had
to be repaired prior to other modifications being made. Further, the unit was discovered to
have been installed out of plumb and, at the manufacturer's recommendation, the Distributor
could not go on line because of possible damage. The installer did not return until mid­
December to re-plumb the Distributor. Finally on December 18th the distributor went on line.
This was three months longer than first anticipated. Unfortunately, the second Distributor
began to fail in November. Much effort was put into keeping it turning to maintain zoogleal
growth. There are three recirculation pumps available for Rotary Distributor/Trickling Filter
management. All three pumps were run constantly. Maintenance personnel increased oiling
and greasing schedule. The Distributors have a motion sensor on them and each time it stopped
the operation staff along with maintenance would push the Distributor to keep it turning.
Finally, a backhoe was used to pull the Distributor with a strap to keep it turning. The
Distributor failed. This occurred before a zoogleal mass was established on the newly installed
Distributor.
I
I
I
I
I
o:\31181-r«Nl 181 -009rag'nowiaiadinfo Itrdoc
NO TICE OF DEFICIENC Y/NOTICE OF VIOLATION AND
RECOMMENDATION FOR ENFORCEMENT
NPDES #NC0024201
Roanoke River WWTP
NOD-2014-LV-0034
Case No. NOV-2014-LV-0190
Case No. NOV-2014-LV-0191
Halifax County
Page:
3/6
occasions. The system is set up for infrequent use for short periods of time (days), as needed.
Polymer is a difficult chemical to work with. Moisture in the wrong location, from sweating to a
leaking valve causes polymer to gum up. To prevent this, operations was asked to monitor the
secondary clarifiers more often to make sure the polymer was still coagulating secondary solids.
This was a visual observation. Another way to check the feed is with a draw down tube located
on the pump. Mineral oil is added to the tube and a draw down is observed. If the draw down
slows down with the variable speed drive of the pump at the same speed this could indicate a
pump problem or a gumming problem. Feeding mineral oil this way not only checked the feed
system but also cleansed gumming of the pump. Operations was asked to perform this task
more and regularly. Operations were also trained to know where common gumming areas in
the system and how to clean them. During daily morning meetings the operators were
reminded of the criticality of this. The maintenance staff was also kept informed in these
morning meetings. Maintenance was asked to check the system each afternoon before leaving.
Operations and maintenance were kept informed on the status of the plant. They were also
instructed that if anything went awry with the system it took precedence over all other work
going on at the time. Maintenance was also put on call for weekend problems. Several things
were done to make the system more reliable. Hot water used in the correct location can help
with gumming. An on-line demand hot water unit was added. The bulk polymer storage tank
was cleaned. The polymer pump was relocated right next to the bulk polymer storage tank to
reduce the length of piping and elbows where gumming was occurring and a second mineral oil
flush system was added to be able to flush the entire suctions side of the pump. Suspect check
valves were replaced with ball valves. In addition, maintenance was instructed to keep all spare
parts for the feed pump and feed system in stock at all times. As one was used it was
immediately replaced.
As evidenced by the DMR's, the polymer did a great job of controlling the bulking sludge.
Lots of TSS numbers were single digit or low double digit. The few triple digit numbers would
ruin the TSS average. Three factors contributed to these high numbers; pump problems,
gumming or high flows from l&l. As mentioned earlier this polymer is only used (usually)
occasionally and only for a few days. During the period of Rotary Distributor bearing retrofitting
the polymer was used for one hundred and six days in a row. The average annual polymer cost
for the past five years was around $7,800.00. This year nearly $28,000, over triple the past five
year average, was spent on polymer.
Polymer used at this location is received in 55 gallon drums. It is a small area of operation
and can only accommodate a few barrels at the time. Operations were asked to monitor
inventory closely and keep it on hand at all times. However, during cold days polymer would
not be shipped due to fear of freezing the polymer and rendering it ineffective. This happened
on several occasions. In these cases staff would take empty 55 gallon barrels to the bulk
I
I
I
I
I
o:\31181-r»!\31181 WV'mE’aomxlaAnfo Itr.doc
I
NOTICE OF DEFICIENCY/NOT1CE OF VIOLATION AND
RECOMMENDATION FOR ENFORCEMENT
NPDES #NC0024201
Roanoke River WWTP
NOD-2014-LV-0034
Case No. NOV-2014-LV-0190
Case No. NOV-2014-LV-0191
Halifax County
Page:
4/6
polymer storage for the waste activated thickening process. Using a bypass pump the barrel
would be filled and transported across the plant and added to the secondary polymer feed
system to maintain control over the effluent TSS. Unfortunately the plan to establish zoogleal
growth on the first retrofitted Distributor before removing the second for retrofitting did not
work out. So it was removed anyway on 1-13-2014. This unit was reinstalled on 3-10-14.
However during installation a seal was inadvertently missed. The Distributor had to be
disassembled once again to install the seal. Finally on 3-24-2014, the Distributor went on line.
Even with the omission of the seal, the second Distributor rebuild took only a little over two
months versus six months for the first unit.
This winter was unusually colder, overcast and wetter than past years. Effluent temperature
dropped onto Celsius single digits, something not seen in many years, if ever. Also daylight hours
were shorter. This made it more difficult and took longer to establish the zoogleal growth.
Finally around late February to early March the zoogleal mass began to appear on the first
installed retrofitted Distributor. The bulking sludge stopped and 5 minute settleabilites began
to return to normal. The zoogleal mass returned shortly after on the second retrofitted
Distributor. This came quicker because warmer ambient and wastewater temperatures and
longer daylight hours. Both filters now have well established zoogleal mass on them and the
plant has returned to expected operation.
DECEMBER VIOLATIONS - FECAL/TSS (0190): 12-31-2013 monthly TSS average 38.83 (Limit
value=30 mg/l), Fecal Coliform Weekly Geometric Mean 502 col/lOOml (Limit value
-400col/100ml). With only three required sampling days left in December the monthly TSS
average was 15.6 mg/l. That included one high TSS of 105.6 mg/l day. This was due to a
malfunction in the polymer feed system. Then on the 29» and 3O'\ 2.4 inches of rain fell. The
maximum flow for the two days was 16.2 and 16.1 MGD respectively with the daily totals being
9.1 and 9.3 respectively. The total plant capacity is 8.34 MGD. The polymer feed could not
control the washout of the finely dispersed bulking sludge at these high flows. As a result, the
two days TSS's were 103.1 and 396.2 mg/l respectively. However as the flow lowered to a
maximum of 8.0 MGD on the 31a, with a total of 5.3 MGD, the effluent TSS dropped to 11.4
mg/l. This demonstrates the ability of the polymer to control the bulking sludge under more
normal flow conditions. December received 8.1 inches of rain in the month. It did not take as
much precipitation to significantly increase flows. The monthly flow average was 4.0 MGD as
compared to the previous December of 2.8 MGD. The yearly average for 2013 was 3.5 MGD.
Demand for hypochlorite feed significantly increased in December. Feed rate was increased
by approximately 50%. Comparatively, in December 2012, the monthly pre-removal residual
was 576ug/l versus a pre-residual 667ug/l in December 2013. In December 2012 this resulted in
a monthly geometric mean of 7 fecal colonies. This compared to a monthly geometric mean in
I
I
I
o:\31181-ral\31181-009'cng'nowKxiadinfollr-da:
I
NOTICE OF DEFICIENCY/NOTICE OF VIOLATION AND
RECOMMENDATION FOR ENFORCEMENT
NPDES #NC0024201
Roanoke River WWTP
NOD-2014-LV-0034
Case No. NOV-2014-LV-0190
Case No. NOV-2014-LV-0191
Halifax County
Date 1-18-14, weekly average 106.29 (limit value 45 mg/l); this week had some higher flows
along with issues associated with the polymer feed system. As the flow for the week decreased
and repairs to the polymer feed system were completed, TSS values trended down. If not for
the anomaly of 570.0 mg/l TSS on the 13th, the same day the trickling filter was taken off line,
the week may very well have been compliant.
SUMMARY: Since August of 1992, the Roanoke Rapids Sanitary District Wastewater
Treatment Plant's operation has had an excellent compliance record. Since this date through
Page:
5/6
JANUARY VIOLATIONS-TSS (0191): Date 1-4-14, weekly average 78.93 mg/l (limit value 45.0
mg/l); this week contains in its average three data points from the previous month. Two of
which caused the monthly non-compliance for December discussed above. It is not understood
how the same two data points can be used in compliance judgment to levy two different
violations. The District feels this is a case of double jeopardy and is incorrect. A weekly violation
should not result in a monthly violation since a monthly violation suggests a chronic condition;
while the results of the other four weeks in December were compliant. However, we recognize
a violation and have previously discussed our actions to correct the problem.
December of 2013 of 197 fecal colonies. Even with the increased hypochlorite feed and extra
sampling and testing, some on the weekend, the weekly limit could not be met. Additionally,
Hypochlorite was increased to ensure compliance for the month. Comparing the subsequent
months as the bulking sludge subsided, fecal Coliform counts went down. This may only be a
coincidence or there may have been some other interference. Nitrites have been an issue in the
past. December nitrite was up some over November.
Date 1-31-14, monthly average 47.08 mg/l (limit value 30 mg/l); this month had some slightly
higher flows but mostly there were polymer feed system problems. Without the anomalies of
570.0 mg/l, the highest TSS reported since 1992, on 1-13 and 152.0 mg/l on 1-27, the monthly
average may well have been compliant. Polymer feed parts were available for all issues as they
arose. However, this month had more than its share of gumming problems. This was the month
that most of the aforementioned improvements were made to the system.
FEBRUARY DEFICIENCY - TSS (0034): Date 2-1-14 weekly average 46.19 mg/l (limit value
45.0). February was a turning point month from all the issues that were experienced since
November 2013. The monthly average was 16.1 mg/l. Regardless, the deficiency experienced
the last week of January can directly be attributed to the combination of removal of the trickling
filter on January 13th, cold, wet, overcast days during the period and faulty polymer feed
equipment. Our most experienced operators were on duty negotiating these difficult conditions
during the final week of January and through their efforts we barely missed our permit limit for
the week.
I
I
Very truly yours,
Enclosures
Cc:
o:\31 ISl-reNl 181-C09'cng'Dovnod3dinfo Iff doc
R. Danieley Brown, P.E.
Chief Executive Officer
Gene St. Clair, Chairman
Mack Wiggins
Gregg Camp
File
Page:
6/6
NO TICE OF DEFIC1ENCY/NOTICE OF VIOLATION AND
RECOMMENDATION FOR ENFORCEMENT
NPDES #NC002420l
Roanoke River WWTP
NOD-2014-LV-0034
Case No. NOV-2014-LV-0190
Case No. NOV-2014-LV-0191
Halifax County
October 31st of 2013 or 7969 days there have been only four daily (instantaneous) infractions;
one for a missed daily analysis for ammonia nitrogen, one for pH, and two for chlorine residual.
Both of which would not have been infractions had the State previously raised the limit to
50ug/l. Since this date through October 31st of 2013 or 1132 weeks, there have been only six
weekly infractions; four for TSS and two for CBOD. Since this date through October 31st of 2013
or 262 months there has been only four infractions; one for TSS, one for CBOD, and two for
percent removal. There was two times each of six years running where no infractions occurred.
This excellent record is due to the support and guidance of administration and the dedication of
staff. This support, guidance and dedication did not wane during the difficult months of
November 2013 through February 2014. The District saw the need to make improvements and
as usual appropriated funds to make this happen. The wastewater plant became a victim of bad
luck (mechanical failure) and one of the worst stretches of bad weather not seen in years.
In addition to the cost to retrofit the two Rotary Distributors the District spent additional
money on extra sampling and testing, overtime, mineral oil, Distributor oil, pump parts, polymer
feed system improvements, polymer, electrical, disinfection chemicals, and change orders. In a
six month timeframe the District spent well in excess of $200,000 on one project to improve
plant operations in an attempt to maintain compliance.
The District has successfully conducted remedial construction activities, as evidenced by
our initial replacement of our Trickling Filters, without a Special Order by Consent but
now realizes it to be a useful tool for satisfactorily completing future activities. Should you
require additional information, please do not hesitate to contact me.
I
Attachment F
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
Mercury Minimization Plan
NPDES Permit Renewal Summary Report
Evaluation of non-domestic users
In order for WWTP personnel to establish and evaluate the potential sources contributing
mercury to the treatment system, information gathering was conducted. This was accomplished
primarily through conference and workshop attendance and extensive website research.
A target list of non-domestic users was developed. The list focused chiefly on significant and non­
significant industrial users, medical and dental facilities. Industrial users permit required
mercury monitoring data was reviewed. This information was correlated with influent and
effluent data at the WWTP. Additionally, industrial users were instructed to do an internal review
of chemicals used in their process and evaluate for mercury presence. If amounts were
The Roanoke Rapids Sanitary District (District) Wastewater Treatment Plant (WWTP) current
NPDES Permit (permit), issued in 2013 contains a requirement for the development of a Mercury
Minimization Plan (MMP). The MMP's purpose is to help reduce amounts of mercury received
by the WWTP and receiving stream, Roanoke River. The MMP focuses on best management
practices (BMP's) to accomplish mercury reduction. The WWTP does not have a mercury limit
nor a monitoring requirement in its current permit. Mercury testing has been necessitated by
current permit due to the Priority Pollutant Analysis (PPA) Scan and due to the Long Term
Monitoring Plan (LTMP) requirement of the Industrial Pretreatment Program. As a result of a
detectable level of mercury in the WWTP effluent and flows exceeding two million gallons a day
(MGD), a MMP is required. The MMP contains needfulness mercury testing as well. The permit
required the development of a MMP within 180 days of the 2012 permit issuance and subsequent
implementation within two years. These requirements were met. In addition, a requirement of
the MMP is a summary report describing activities during the current permit period for submittal
with the next NPDES permit renewal application.
Other than permit renewal summary report requirement the MMP addresses four basic areas,
evaluation of non-domestic sources, control measures, tracking and monitoring, and
implementation of control measures.
I
I
I
identifying mercury on location and;
I
I Control Measures
I
I
I
I
I
discovered above industrial level averages, alternative use chemicals were requested. Another
means of industrial user over sight is through the pretreatment program annual facility
inspection. Inspections offer opportunity to discuss mercury issues such as chemical usage and
proper disposal. Further, industry slug spill plans required by the pretreatment program control
the accidental release of mercury to the POTW.
As well as industrial users, medical and dental facilities were surveyed. Contact lists were in part
established through the use of the telephone directory yellow pages. Surveys were both written
form and telephone. The surveys served several purposes: one) awareness of the problems with
mercury introduction into the WWTP; two) education on identifying mercury on location and;
three) best management practices for use and disposal.
The District continuously evaluates potential non-domestic sources of mercury contribution to
the WWTP. When an existing facility makes a customer service request, office staff notify the
WWTP if there may be a need to investigate potential contaminants. Also, the District is a
member of the City of Roanoke Rapids' Development Review Committee and reviews a new
facility's construction building plans as a condition of being issued a City building permit. This
review provides a means to examine potential contaminants.
Pollution Prevention: An internal review of chemicals and equipment that may contain mercury
is ongoing at the WWTP. Alternate chemicals and equipment containing lesser or no amount of
mercury are evaluated for use. This internal review has been successful in accomplishing
mercury reduction throughout the plant site.
Housekeeping, Spill Control and Collection, and Education: Employees at the WWTP have been
informed of the MMP. Awareness has been raised on the importance of mercury control
procedures to minimize the possibility of any spill or release. In addition, identification of
possible mercury containing items has been recognized. Employees are informed on the use of
labels. Safety Data Sheets (SDS), suppliers, manufacturers and website for information on
mercury presence. The WWTP has a stormwater permit. This permit requires the development
of a stormwater pollution prevention plan (SPPP). The goal of the SPPP is to prevent the
accidental release of contaminants from leaving the plant site. Mercury is one of the
contaminants which must be controlled. Annual training includes spill containment, clean up
and proper disposal.
The WWTP has hundreds of compact florescent lamps (CFL's), florescent tube lamps, and metal
halide lamps. The first two are inside bulb use with the latter being mainly outside use.
Recycling of these mercury containing lamps has been occurring since the early 2000 s. When
low level mercury containing lamps became available they were installed as the regular lamps
burned out. Again the low level lamps were recycled as well. With light-emitting diode (LED)
I
I
I
I
I
lamps; which contain no mercury, now on the market, the WWTP has begun to replace all
mercury containing lamps with LED lamps. To date, 5% of CFL's and florescent lamp tubes
remain to be changed out. The metal halide lamps have begun to be replaced as well with
approximately 35% of these type lamps remain.
As equipment is upgraded or added, mercury free devices and accessories are sought. One
example would be mercury-containing level indicating or actuating float switches. Many tanks,
pumps, and mixers use these switches. As these fail or are upgraded, they are being replaced
with mercury-free level indicating or actuating devices. As existing switches are removed, they
will be sent to a recycler. New equipment added to plant processes are required to be
controlled with mercury free devices.
Laboratory Practices: The WWTP laboratory has thoroughly reviewed chemicals and equipment
for mercury presence. Two tests being performed incorporated the use of mercury. Ammonia
Nitrogen is permit required and Chemical Oxygen Demand (COD) is for process control. The
permit required test required a dry chemical in its procedure which contained mercury. To
eliminate mercury, an alternative Selective Electrode Method test procedure is now performed.
The process control test required the use of a vial that has a liquid in it which contained
mercury. The lab switched to a vial that has no mercury for process control testing. However,
mercury containing vials are still used annually for blind studies to maintain certification and
quarterly as quality assurance/control. A recycling kit was obtained from the supplier for these
used vials. When the kit reaches capacity it is recycled. Mercury containing thermometers
used throughout the lab and various locations around the plant site have been replaced with
alcohol filled thermometers. Because of the small amount of mercury used in the lab a spill
recovery/cleanup kit is reserved.
Public Outreach: The District has been active in making available educational information
regarding issues with mercury. The system annual performance report describes and addresses
the goals and requirements of the MMP. The annual consumer confidence report; a synopsis of
the system annual performance report posted on the District's website, includes an attached
MMP and the Mercury Minimization Plan Implementation (MMPI) document. This document is
a brief overview of the MMP. It discusses problems with mercury in the environment, the MMP
goals, identification of sources of mercury, proper disposal, and web links where additional
information can be obtained. The District released a public service announcement (PSA) to the
local newspaper and radio station. It touched on the problems with mercury in the environment
and its impact on the WWTP. Further, the PSA announced that the District would be holding a
mercury collection day. In addition, a three and one half by eight-foot-long banner announcing
the collection day was posted at the collection site located by a busy thoroughfare. The event
was also discussed at the monthly public board meeting. The collection day was set for a
Saturday, June 18, 2016. Phone calls were made to medical and dental facilities during the prior
week to be sure they were aware of the collection day. It was decided to collect mercury or any
device containing mercury. The collection day was a success with 73 mercury containing items
I
I
I
I
(excluding fluorescent light tubes) removed from the environment. A regional recycling facility
was contracted for disposal of the collected mercury. The collection committee met soon
afterwards to go over the day's proceedings and discuss lessons learned for improved future
mercury collection days. It was also decided to keep a collection container on hand and receive
mercury at any time.
The WWTP conducts tours of the facility throughout the year. These tours provide an excellent
opportunity to educate the general public. Mercury awareness is a part of this education
opportunity. In addition, District personnel have on occasion had opportunity to speak at various
functions and locations. This provides opportunity for educating about mercury issues.
The summary of the MMP for permit renewal can also be posted on the District's website as
further means to keep the public informed of the efforts being made to control mercury issues.
Tracking and Monitoring
In order to assess the implementation of control measures the WWTP will make evaluations of
several areas. Continue to review water customers and new construction projects. Survey
annually a minimum of ten percent (10%) of non-domestic users. This will include industrial,
medical and dental facilities, and any other potential source identified as a mercury contributor
to the WWTP. The surveys will be conducted primarily through a written questionnaire and serve
as an awareness reminder. To encourage participation, self-addressed postage paid return
envelopes are provided. (Nearly 75% of the recent written questionnaires were responded to.)
Secondly, phone questionnaires will be conducted. This will target the non-responsive written
questionnaires that will be sent out. The pretreatment program will continue to be an integral
part of the MMP. The annual industry pretreatment inspection will be a valuable tool for
discussing mercury issues and as a reminder to be vigilant about assessing bulk use chemicals.
Influent and effluent mercury is monitored quarterly as a requirement of the pretreatment
program LTMP. One year before the next headworks analysis (HWA) is due the testing frequency
increases too monthly. The testing requirement calls for standard method level testing (method
245). This method can detect to as low as 200 parts per trillion. All Influent results are less than
this level. To have a better understanding of the actual amount of mercury present low level
testing (method 1631) has been done. This method can detect down to 1 part per trillion.
Effluent monitoring is done as a requirement of the annual PPA Scan. Testing for this
requirement calls for method 1631. In addition, the WWTP has been active in looking for side
streams into the plant such as septic tank haulers and porta John wastes; which have been tested;
leachate from the county solid waste transfer station has been monitored; and residuals from
the water treatment plant process discharged to the WWTP have been analyzed. Additionally,
water treatment test records for mercury levels in finished drinking water have been reviewed.
I
I
Implementation of Control Measures
Employee training will continue in an effort to identify internal mercury and mercury containing
devices and its proper disposal. This applies to the WWTP lab, programs, and plant operations.
The pretreatment program will be instrumental in working with industries through the permitting
process and annual inspections. Industries are required to give previous notice of any significant
process or chemical change. This allows time to evaluate affects to the WWTP before change is
initiated. The pretreatment program will continue annual surveys as a means to identify mercury
sources and promote awareness. The lab will continue to identify, evaluate and monitor side
streams in an effort to maintain oversight of mercury introduction into the WWTP. The lab data
collected from non-domestic users will continue to be evaluated for its effect on WWTP influent,
effluent and biosolids mercury concentration.
Public awareness and education continues to be a large part of the MMP and its application
towards mercury reduction. Avenues used include annual performance reports, consumer
confidence reports, website postings, public service announcements with newspaper and radio,
bill inserts, plant tours, and public forums.
The District's sewer use ordinance (SUO), a general ordinance which limits or prohibits the
introduction of substances into the WWTP system, protects the WWTP, its employees, public
health and the environment. Mercury is limited by the SUO.
The WWTP produces a solids by-product or biosolids. Biosolids are land applied to various land
parcels in the area. In order to monitor and control the various constituents, including mercury;
land applied testing of the biosolids is conducted regularly.
A filing system has been developed for tracking and monitoring. The laboratory and
administration have worked closely together as a means of check and balance. A schedule will
be developed which will incorporate the requirements of the permit, LTMP, PPA, and the MMP
to consolidate and coordinate mercury monitoring and tracking.
EDMR REGISTRATION FORM
Zip Code:.City:Weldon 27890
PartB. OWNER USER INFORMATION
Title:PE, CEO1.
27870
4.
5.
PartC. USER ACCOUNT INFORMATION
Facility Administrator User Details
Permit No. (s):NC0024201
First Name:Steven
Middle Name:L.
Last Name:Ellis
Phone Number:[phone]
UserID:Email:(Assigned by DWR eDMR Administrator)[e-mail]
1NC eDMR Registration Form (Revision 4.1)
Part A. PERMIT/FACILITY INFORMATION
1. NPDES Permit Number: N | C | Q | 0 |2 |4 | 2 |o |1 I
State of North Carolina
Department of Environmental Quality
Division of Water Resources
Water Resources
EHVISOl.MtH r*i au*un
Roanoke Rapids Sanitary District
oanoke River WWTP______
135 Aqueduct Rd
State: NC
3. Telephone Number:.
Email Address:____
1. Facility Administrator Permission
The Facility Administrator user permission can be assigned at the time of registration by the NCDWR
eDMR Administrator. If someone other than the Owner will be responsible for managing facility users
within eDMR and you would like the Division to set up the permission at the time of registration, then
please provide the user details for the individual who will need the Facility Administrator user permission.
Note: If this person will be responsible for submitting eDMR reports, then you will also need to request
Submitter permission for this user.
In addition to the user details, please specify the permit number(s) to which the user will be associated. If
additional space is needed, please make additional copies of the Facility Administrator User Details and
complete as needed.
2. Owner/Organization Name:.
3. Facility Name:__R.
4. Facility's Physical Address:
Responsible Official's Name: R, Danieley Brown
(Owner or duly authorized representative)
2. Mailing Address: 1000 Jackson Street | PO Box 308
City: Roanoke Rapids State: NC Zip Code:
[phone]___________________
[e-mail]
User ID (Assignedby NCDWR eDMR Administrator):
2. Submitter Permission
NOTE: The Owner will be responsible for creating all facility users except those with Submitter permissions.
Submitter User Details
Permit No. (s):NC0024201
First Name:Steven
Middle Name:L.
Last Name:Ellis
Phone Number:[phone]
Email:User ID:[e-mail] (Assigned by DWR eDMR Administrator)
-Submitter User Details
Permit No. (s):NC0024201
First Name:Justin
Middle Name:D.
Last Name:Blackmon
Phone Number:[phone]
Email:UserID:[e-mail] (Assigned by DWR eDMR Administrator)
NC eDMR Registration Form (Revision 4.1)2
Provide the users, in addition to the Owner, who will need Submitter permission. The Submitter user
permission can only be assigned by the NCDWR eDMR Administrator. The Owner specified above will be
given full eDMR permissions including Submitter permission.
In addition to the user details, please specify the permit(s) to which each user will be associated for eDMR
submittal. Should additional space be needed for users and/or permits, please make additional copies of
this page and complete as needed.
In addition to the Owner and Submitter user groups, there are four user types identified by user
permission level: Facility Administrator, Certifier, Data Entry and View Only.
The Owner and Facility Administrator will have the ability to create and manage facility users. The
Facility User Management Guide, located on the eDMR User Documentation web page, provides the
appropriate procedures for facility user management.
!
L
North Carolina General Statute § 143-215.6B provides that:
■
3NC eDMR Registration Form (Revision 4.1)
I
I
(printed name), have the authority to make this request for
________(Owner/Organization Name).
August 4, 2016
Date
RESPONSIBLE OFFICIAL AUTHORIZATION
The Responsible Official, as identified in accordance with Part II, Section B.ll of the Standard Conditions for
NPDES Permits and 40 CFR 122.22, is the appropriate individual with the authority to sign applications or reports
for the Owner/Organization.
REGISTRATION CERTIFICATION
For the permit(s) associated with the Owner identified above, I request permission to submit DMR data using the
NCDWR eDMR system.
R. Danieley Brown____________
Roanoke Rapids Sanitary District
PE, CEO_________
Official Title (type or print)
R. Danieley Brown_______________
Owner/Responsible Official Name (type or print)
Owner/Responsible Official Signature
I understand that electronic submittal of the DMR does not fully satisfy US EPA's electronic signature
requirements and as a result, I understand I will be required to print, sign, and submit hardcopies (one signed
original and a copy) of the eDMR to NCDWR under the same reporting requirements as paper-based DMRs as
specified in Part II, Condition D (2) of the NPDES Permit.
I agree to protect the security of my user ID and password from compromise and shall take all necessary steps to
prevent its loss, disclosure, modification, or unauthorized use.
Any person who knowingly makes any false statement, representation, or certification in any application, record, report,
plan, or other document filed or required to be maintained under this Article or a rule implementing this Article; or who
knowingly makes a false statement of a material fact in a rulemaking proceeding or contested case under this Article; or who
falsifies, tampers with, or knowingly renders inaccurate any recording or monitoring device or method required to be
operated or maintained under this Article or rules of the Commission implementing this Article, shall be guilty of a Class 2
misdemeanor which may include a fine not to exceed ten thousand dollars ($10,000). 18 U.S.C. Section 1001 provides a
punishment by a fine or imprisonment not more than 5 years, or both, for a similar offense.
i
eDMR Owner Verification Report
i
Permit No. :NC0024201 Version:4.00 ActivePermt Status:
Owner/Permittee :Roanoke Rapids Sanitary District
Responsible Official:R D.Brown
Resp. Official Title:PE, CEO
Facility Name :Roanoke River WWTP
Facility Address:
Registered for eDMR? :No
!Facility Classification:WW-4.
ORC Name Certification #Cert Status ORC Designation
Ellis, Steven L.
Camp, Alan G.
Moseley, David F.
Pearce, James E.
Skipper, Timothy V.
Williams, Frederick B.
WW-4 / 994934
WW-4. / 6614
WW-4 / 994933
WW-3/ 1002151
WW-4/998187
WW-3. / 12731
Active
Active
Active
Active
Active
Active
ORC
Backup
Backup
Backup
Backup
Backup
Page # : 1
Date : 8/3/2016
135 Aqueduct Rd
Weldon, NC 27890
Date:August 3, 2016
Subject:
To Whom It May Concern:
Individual #2 (if applicable)Individual #1
Mailing Address:
iRegional Office, Water Quality Permitting Sectioncc:
Name:
Title:
By notice of this letter, I hereby delegate signatory authority to each of the following individuals for all
permit applications, discharge monitoring reports, and other information relating to the operations at
the subject facility as required by all applicable federal, state, and local environmental agencies
specifically with the requirements for signatory authority as specified in 15A NCAC 2B.0506.
If you have any questions regarding this letter, please feel free to contact me at either the phone
number or email address below.
Delegation of Signature Authority
Facility Name:
NPDES Permit Number:
Raleigh______
(Enter region name)
Wastewater Branch
Water Quality Permitting Section
Division of Water Resources
1617 Mail Service Center
Raleigh, NC 27699-1617
[e-mail]
[phone]
[phone]
Physical Address:
(if different)
Email Address:
Office Phone:
Mobile Phone:
[e-mail]
[phone]
[phone]
Justin D. Blackmon
Utility Engineer__________
1000 Jackson Street
Roanoke Rapids, NC 27870
Steven L. Ellis_____
ORC____________
135 Aqueduct Rd.
Weldon, NC 27890
PE, CEO
Title
[phone]
Mobile Phone
R. Danieley Brown_______________________
Authorized Signing Official’s Name (type or print)
1000 Jackson St. Roaonke Rapids, NC 27870
Mailing Address
[e-mail] _____________________
Email Address
[phone]_________________________
Office Phone
Roanoke River WWTP_______
N| C|0 |0 | 2 |4 | 2 |0 | 1|
Sincerely,
Authorized SigningOfficiars Signature
Hayes, Mitch
E-mail correspondence to and from this address may be subject to the North Carolina Public Records Law and may be disclosed to third parties.
Thanks,
1
From: Steven Ellis [mailto:[e-mail]]
Sent: Tuesday, January 24, 2017 10:47 AM
To: Hayes, Mitch <[e-mail]>
Cc: Dan Brown <[e-mail]>
Subject: RRSD Plant inspection report
Hayes, Mitch
Tuesday, January 24, 2017 11:14 AM
'Steven Ellis'
Dan Brown
RE: RRSD Plant inspection report
From:
Sent:
To:
Cc:
Subject:
Mitch Hayes, Environmental Specialist
NCDEQ - Division of Water Resources
Water Quality Regional Operations Section
1628 MSC, Raleigh, NC 27699-1699
(P) 919.791.4261 - (F) 919.788.7159
http://portal.ncdenr.org/web/wq/
Mitch, I have reviewed the Inspection report you sent and found some errors. You have listed David Moseley as one of the individuals who guided you, he was
not present during the inspection, I was. Second, you listed that we were feeding acid in the influent, we were not. We have not fed acid since the system was
constructed. You have listed that we have three chlorine contact chambers, we only have two. You listed that we have a backup gaseous chlorine/sulfur dioxide
feed system, we do not. We have the system but it is not operational and is going to be removed. I would like to know if the removal of the abandoned gaseous
feed system is permissible.
Steve,
Sorry for the confusion and the errors. I will print a copy of this email and place it in the file for future clarification. You can remove the abandoned gaseous feetf^
system anytime. Just remember to note that when the permit comes up for renewal the next time.
Mitch
Steven Ellis | Wastewater Treatment Plant ORC
Ph 252.536.4884 | Fax [phone] | Cell 252.885.0166 | Email sellis(g)rrsd.orq
Delivering safe drinking water while protecting environmental water quality
Roanoke Rapids Sanitary District
2
1000 Jackson Street | PO Box 308 | Roanoke Rapids, NC 27870 | www.rrsd.org
Please consider the natural environment before printing this e-mail.
PAT MCCRORY
Governor
DONALD R. VAN DER VAART
Secretary
S. JAY ZIMMERMAN
Director
December 16, 2016
Dear Mr. Brown:
J
1. The 8.34 MGD facility consists of the following units: rotamat; vortex grit collector; two (2) grit
classifiers and one (1) detritor; manual bar screen; influent pump station with four (4) pumps; two
(2) 375,000 gallons each equalization tanks; manual acid and caustic feed systems for influent
flow; two (2) primary clarifiers; two (2) trickling filters; two (2) 2,000,000 gallons each rectangular
secondary clarifier with traveling bridge skimmer arms; one (1) filtered effluent pump station;
three (3) chlorine contact basins with liquid sodium hypochlorite for chlorination and sodium
bisulphite for dechlorination with back-up gaseous chlorine and sulfur dioxide; two (2) RAS pump
stations; three (3) 500,000 gallons each square aeration basins; three (3) anaerobic digesters with
heat exchangers; one (1) WAS pump station; two (2) gravity settling tanks with gravity belt
thickener; one (1) 1,000,000 gallons solids storage tank; sludge loading station; fourteen (14)
sludge drying beds; one (1) on-site generator for back-up power.
Water Resources
ENVIRONMENTAL QUALITY
R. Danieley Brown, CEO
Roanoke Rapids Sanitary District
PO Box 308
Roanoke Rapids, NC 27870
Division of Water Resources, Raleigh Regional Office, Water Quality Operations Section http://portal.ncdenr.org/web/wq/aps
1628 Mail Service Center, Raleigh, NC 27699-1628 Phone: [phone]
Location: 3800 Barrett Drive, Raleigh, NC 27609 Fax: [phone]
Subject: Compliance Evaluation Inspection
Roanoke River Waste Treatment Plant
NPDES Permit NC0024201
Halifax County
Mitch Hayes of the Raleigh Regional Office conducted the subject inspection on December 14, 2016.
The assistance provided by Gregg Camp, David Moseley and Isabelle Wilcoxon were appreciated. Below
is a list of findings developed from the inspection:
2. At the time of inspection, the rotamat, vortex grit collector, grit classifiers, and detritor were
operating normally. Both EQ tanks were empty. Acid was being fed into the influent maintaining
the pH around 7.2. Both primary and secondary clarifiers and trickling filters were operating
normally. Effluent flowing off the secondary clarifiers appeared clear with no pin floc. One RAS
pump station was being operated. One out of three aeration basins was being operated, the other
two were down for cleaning. All three anaerobic digesters were in use with methane gas being
flared off. The 1 MG storage tank was last emptied November 1, 2016. The gravity belt thickener
was not in use at the time of inspection. Sludge was being dried in two sludge drying beds. Effluent
at the outfall appeared clear with very little foam. The on-site generator is operated under load
once a month.
3.
4.
5.
Sincerely,
cc: permit files, Central Files
I would like to thank David Mosley, Greg Camp, and Isabelle Wilcoxon for their time and assistance
with this inspection. If you have any questions about this letter or the inspection, please contact Mitch
Hayes at 919.791.4261 or at mitch.hayesfgncdenr.go-
Synagro is contracted to haul sludge under land application permit WQ0001989. Up to 1800 dry
tons are allowed to be hauled per year.
The laboratory was checked in a cursory manner. Roanoke River Waste Treatment Laboratory
analyzes BOD, COD, TSS, fecal coliform, ammonia nitrogen, total phosphorus, and is field certified
for TRC, pH, temperature, DO, specific conductance. Merritech Labs is the contract lab that
analyzes all other parameters. All instruments, meters, probes, photometric cells are maintained
in good condition. Temperatures on all equipment are checked against an NIST thermometer. All
standards, reagents and consumables used are within expiration dates.
Danny Smith, Regional Supervisor
Water Quality Regional Operations Section
Raleigh Regional Office, DEQ
Discharge Monitoring Reports (DMR's) for the period February 2015 through September 2016
were reviewed for compliance with permit limits and monitoring requirements. Weekly and
monthly average for total suspended solids were exceeded in April 2015. This violation has been
addressed. There were no other violations listed for the period.
I EPA
Section A: National Data System Coding (i.e., PCS)
yr/mo/dayNPDES
1 I1716/12/14NC0024201
Reserved-
72 73I
Section 8: Facility Data
Entry Time/Date Permit Effective Date
13/04/0116/12/1410:30AM
Roanoke River WWTP
Exit Time/Date
16/12/1412:00PM
Other Facility DataName(s) of Onsite Representative(s)/Titles(s)/Phone and Fax Number(s)
Name, Address of Responsible Officiai/Title/Phone and Fax Number
Contacted
Gregg Camp,PO Box 308 Roanoke Rapids NC 27870//252-536-4884/
No
Section C: Areas Evaluated During Inspection (Check only those areas evaluated)
Effluent/Receiving Waters
Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary)
(See attachment summary)
DateAgency/Office/Phone and Fax NumbersName(s) and Signature(s) of Inspector(s)
RROWQ//919-791-4200/
ii. l^f Z6 I
Date
1Page#
Name and Location of Facility Inspected (For Industrial Users discharging to POTW, also include
POTW name and NPDES oermit Number)
■ Permit
f Self-Monitoring Program
| Laboratory
Flow Measurement
Sludge Handling Disposal
Operations & Maintenance | Records/Reports
Facility Site Review
135 Aqueduct Rd
Weldon NC 27890
Form Approved.
OMB No. 2040-0057
Approval expires 8-31-98
Permit Expiration Date
17/03/31
///
David Franklin Moseley//252-536-8088 /
David Franklin Moseley/ORC/252-536-4884/
Gregg Camp//252-536-4884 /
Steven Lee Ellis/ORC/252-536-4884/
Inspection Type
18
United States Environmental Protection Agency
Washington, D.C. 20460
Water Compliance Inspection Report
Inspector
19KI
QA
KJ
Inspection Work Days
671
Fac Type
20U
Facility Self-Monitoring Evaluation Rating
70 u
J11KI
2ii i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i r
m74
Mitchell S Hayes
A ■
Siofeture cJf Management Q /U^viewer X Agency/Office/Phone and Fax Numbers
'
ERA Form 3560^(Rev 9-94) Previous editions are obsolete.
75| I I I I I I I80
Transaction Code
2 LI 12131
B1
71 u
1NPDES1(Cont.)
3[NC0024201
Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary)
2Page#
yr/mo/day
16/12/14
The 8.34 MGD facility consists of the following units: rotamat; vortex grit collector; two (2) grit
classifiers and one (1) detritor; manual bar screen; influent pump station with four (4) pumps; two (2)
375,000 gallons each equalization tanks; manual acid and caustic feed systems for influent flow; two
(2) primary clarifiers; two (2) trickling filters; two (2) 2,000,000 gallons each rectangular secondary
clarifier with traveling bridge skimmer arms; one (1) filtered effluent pump station; three (3) chlorine
contact basins with liquid sodium hypochlorite for chlorination and sodium bisulphite for dechlorination
with back-up gaseous chlorine and sulfur dioxide; two (2) RAS pump stations; three (3) 500,000
gallons each square aeration basins; three (3) anaerobic digesters with heat exchangers; one (1) WAS
pump station; two (2) gravity settling tanks with gravity belt thickener; one (1) 1,000,000 gallons solids
storage tank; sludge loading station; fourteen (14) sludge drying beds; one (1) on-site generator for
back-up power.
At the time of inspection, the rotamat, vortex grit collector, grit classifiers, and detritor were operating
normally. Both EQ tanks were empty. Acid was being fed into the influent maintaining the pH around
7.2. Both primary and secondary clarifiers and trickling filters were operating normally. Effluent flowing
off the secondary clarifiers appeared clear with no pin floc. One RAS pump station was being operated.
One out of three aeration basins was being operated, the other two were down for cleaning. All three
anaerobic digesters were in use with methane gas being flared off. The 1 MG storage tank was last
emptied November 1, 2016. The gravity belt thickener was not in use at the time of inspection. Sludge
was being dried in two sludge drying beds. Effluent at the outfall appeared clear with very little foam.
The on-site generator is operated under load once a month.
Synagro is contracted to haul sludge under land application permit WQ0001989. Up to 1800 dry tons
are allowed to be hauled per year.
The laboratory was checked in a cursory manner. Roanoke River Waste Treatment Laboratory
analyzes BOD, COD, TSS, fecal coliform, ammonia nitrogen, total phosphorus, and is field certified for
TRC, pH, temperature, DO, specific conductance. Merritech Labs is the contract lab that analyzes all
other parameters. All instruments, meters, probes, photometric cells are maintained in good condition.
Temperatures on all equipment are checked against an NIST thermometer. All standards, reagents
and consumables used are within expiration dates.
Discharge Monitoring Reports (DMR’s) for the period February 2015 through September 2016 were
reviewed for compliance with permit limits and monitoring requirements. Weekly and monthly average
for total suspended solids were exceeded in April 2015. This violation has been addressed. There were
no other violations listed for the period.
I11 12l I17
Inspection Type
18 |cj
Roanoke River WWTP
Operations & Maintenance Yes No NA NE
■ Is the plant generally clean with acceptable housekeeping?
■
Comment:
Permit Yes No NA NE

Is the facility as described in the permit?
# Are there any special conditions for the permit?
Is access to the plant site restricted to the general public?
Is the inspector granted access to all areas for inspection?
Permit expires March 31, 2017.Comment:
Record Keeping Yes No NA NE
Are records kept and maintained as required by the permit?
Is all required information readily available, complete and current?
Are all records maintained for 3 years (lab. reg. required 5 years)?
Are analytical results consistent with data reported on DM Rs?
Is the chain-of-custody complete?
Dates, times and location of sampling
Name of individual performing the sampling
Results of analysis and calibration
Dates of analysis
Name of person performing analyses
Transported COCs
■ Are DMRs complete: do they include all permit parameters?
Has the facility submitted its annual compliance report to users and DWQ?
■
■ Is the ORC visitation log available and current?
Is the ORC certified at grade equal to or higher than the facility classification?
Is the backup operator certified at one grade less or greater than the facility classification?
■ Is a copy of the current NPDES permit available on site?
3Page#
Permit: NC0024201
Inspection Date: 12/14/2016
(If the present permit expires in 6 months or less). Has the permittee submitted a new
application?
Does the facility analyze process control parameters, for ex: MLSS, MCRT, Settleable
Solids, pH, DO, Sludge Judge, and other that are applicable?
(If the facility is = or > 5 MOD permitted flow) Do they operate 24/7 with a certified operator
on each shift?
Owner - Facility:
Inspection Type: Compliance Evaluation
Roanoke River WWTP
Record Keeping Yes No NA NE
Facility has copy of previous year's Annual Report on file for review?
Comment:
Effluent Pipe Yes No NA NE
■ Is right of way to the outfall properly maintained?
Are the receiving water free of foam other than trace amounts and other debris?
If effluent (diffuser pipes are required) are they operating properly?
Very little foam was present.Comment:
Flow Measurement - Effluent Yes No NA NE
■ # Is flow meter used for reporting?
■ Is flow meter calibrated annually?
Is the flow meter operational?
(If units are separated) Does the chart recorder match the flow meter?
Comment:
Anaerobic Digester Yes No NA NE
Type of operation:Fixed cover
Is the capacity adequate?
# Is gas stored on site?
■ Is the digester(s) free of tilting covers?
■ Is the gas burner operational?
Is the digester heated?
■ Is the temperature maintained constantly?
Is tankage available for properly waste sludge?
methane was being flared off.Comment:
Drying Beds Yes No NA NE
Is there adequate drying bed space?
Is the sludge distribution on drying beds appropriate?
■ Are the drying beds free of vegetation?
# Is the site free of dry sludge remaining in beds?
■ Is the site free of stockpiled sludge?
4Page#
Permit: NC0024201
Inspection Date: 12/14/2016
Owner - Facility:
Inspection Type: Compliance Evaluation
I Roanoke River WWTP
Compliance Evaluation
Drying Beds Yes No NA NE
■ Is the filtrate from sludge drying beds returned to the front of the plant?
■# Is the sludge disposed of through county landfill?
■ # Is the sludge land applied?
■ (Vacuum filters) Is polymer mixing adequate?
Sludge is land applied according to land app. permit WQ0001989.Comment:
Solids Handling Equipment Yes No NA NE
Is the equipment operational?
Is the chemical feed equipment operational?
■ Is storage adequate?
Is the site free of high level of solids in filtrate from filter presses or vacuum filters?
■ Is the site free of sludge buildup on belts and/or rollers of filter press?
Is the site free of excessive moisture in belt filter press sludge cake?
The facility has an approved sludge management plan?
Belt presses were not being operated during inspection.Comment:
Chemical Feed Yes No NA NE
Is containment adequate?
■ Is storage adequate?
Are backup pumps available?
Is the site free of excessive leaking?
Comment:
Pump Station - Effluent Yes No NA NE
Is the pump wet well free of bypass lines or structures?
Are all pumps present?
Are all pumps operable?
Are float controls operable?
Is SCADA telemetry available and operational?
Is audible and visual alarm available and operational?
Comment:
Pump Station - Influent Yes No NA NE
5Page#
Permit: NC0024201
Inspection Date: 12/14/2016
Owner - Facility:
Inspection Type:
1Roanoke River VWVTPPermit: NC0024201
Compliance EvaluationInspection Date: 12/14/2016
Pump Station ■ Influent Yes No NA NE
Is the pump wet well free of bypass lines or structures?
■ Is the wet well free of excessive grease?
■ Are all pumps present?
Are all pumps operable?
■ Are float controls operable?
■ Is SCADA telemetry available and operational?
Is audible and visual alarm available and operational?
Comment:
Bar Screens Yes No NA NE
Type of bar screen
a.Manual
b.Mechanical
■ Are the bars adequately screening debris?
■ Is the screen free of excessive debris?
■ Is disposal of screening in compliance?’
Is the unit in good condition?
A rotamat is stationed at the head of the plant.Comment:
Grit Removal Yes No NA NE
Type of grit removal
a.Manual
b.Mechanical
■ Is the grit free of excessive organic matter?
Is the grit free of excessive odor?
# Is disposal of grit in compliance?
Vortex grit removal is in service with classifiers and detritor.Comment:
Equalization Basins Yes No NA NE
Is the basin aerated?
Is the basin free of bypass lines or structures to the natural environment?
■ Is the basin free of excessive grease?
■ Are all pumps present?
6Page#
Owner - Facility:
Inspection Type:
I Roanoke River WWTP
Equalization Basins Yes No NA NE
Are all pumps operable?
■ Are float controls operable?
■ Are audible and visual alarms operable?
# Is basin size/volume adequate?
EQ basins were emptied at the time of inspection.Comment:
Primary Clarifier Yes No NA NE
■ Is the clarifier free of black and odorous wastewater?
■ Is the site free of excessive buildup of solids in center well of circular clarifier?
Are weirs level?
■ Is the site free of weir blockage?
■ Is the site free of evidence of short-circuiting?
■ Is scum removal adequate?
Is the site free of excessive floating sludge?
Is the drive unit operational?
Is the sludge blanket level acceptable?
Is the sludge blanket level acceptable? (Approximately % of the sidewall depth)
Effluent appeared clear flowing over the weirs.Comment:
Secondary Clarifier Yes No NA NE
■ Is the clarifier free of black and odorous wastewater?
Is the site free of excessive buildup of solids in center well of circular clarifier?
■ Are weirs level?
■ Is the site free of weir blockage?
■ Is the site free of evidence of short-circuiting?
Is scum removal adequate?
Is the site free of excessive floating sludge?
Is the drive unit operational?
■ Is the return rate acceptable (low turbulence)?
Is the overflow clear of excessive solids/pin floc?
Is the sludge blanket level acceptable? (Approximately % of the sidewall depth)
These are retangular secondary clarifiers.Comment:
7Page#
■
■
Permit: NC0024201
Inspection Date: 12/14/2016
Owner - Facility:
Inspection Type: Compliance Evaluation
Roanoke River WWTP
Trickling Filter Yes No NA NE
■ Is the filter free of ponding?
Is the filter free of leaks at the center column of filter's distribution arms?
Is the distribution of flow even from the distribution arms?
Is the filter free of uneven or discolored growth?
Is the filter free of sloughing of excessive growth?
Are the filter’s distribution arms orifices free of clogging?
Is the filter free of excessive filter flies, worms or snails?
Filters were operating normally.Comment:
Aeration Basins Yes No NA NE
Mode of operation Plug flow
Type of aeration system Diffused
Is the basin free of dead spots?
■ Are surface aerators and mixers operational?
■ Are the diffusers operational?
Is the foam the proper color for the treatment process?
Does the foam cover less than 25% of the basin’s surface?
Is the DO level acceptable?
Is the DO level acceptable?(1.0 to 3.0 mg/l)
Comment:
Nutrient Removal Yes No NA NE
■ # Is total nitrogen removal required?
# Is total phosphorous removal required?
Type Biological
# Is chemical feed required to sustain process?
■ Is nutrient removal process operating properly?
There is no permit limit for TN or TP in the permit.Comment:
Standby Power Yes No NA NE
Is automatically activated standby power available?
Is the generator tested by interrupting primary power source?
■ Is the generator tested under load?
8Page#
Permit: NC0024201
Inspection Date: 12/14/2016
Owner - Facility:
Inspection Type: Compliance Evaluation
Roanoke River WWTP
Standby Power Yes No NA NE
Was generator tested & operational during the inspection?
■ Do the generator(s) have adequate capacity to operate the entire wastewater site?
■ Is there an emergency agreement with a fuel vendor for extended run on back-up power?
Is the generator fuel level monitored?
Generator is operated under load once a month.Comment:
Laboratory Yes No NA NE
■ Are field parameters performed by certified personnel or laboratory?
Are all other parameters(excluding field parameters) performed by a certified lab?
# Is the facility using a contract lab?
■
Incubator (Fecal Coliform) set to 44.5 degrees Celsius*/- 0.2 degrees?
■ Incubator (BOD) set to 20.0 degrees Celsius +/-1.0 degrees?
Comment:
Disinfection-Liquid Yes No NA NE
Is there adequate reserve supply of disinfectant?
■ (Sodium Hypochlorite) Is pump feed system operational?
Is bulk storage tank containment area adequate? (free of leaks/open drains)
Is the level of chlorine residual acceptable?
■ Is the contact chamber free of growth, or sludge buildup?
Is there chlorine residual prior to de-chlorination?
Comment:
Effluent Sampling Yes No NA NE
Is composite sampling flow proportional?
Is sample collected below all treatment units?
■ Is proper volume collected?
■ Is the tubing clean?
■
■
9Page#
# Is proper temperature set for sample storage (kept at less than or equal to 6.0 degrees
Celsius)?
# Is proper temperature set for sample storage (kept at less than or equal to 6.0 degrees
Celsius)?
Is the facility sampling performed as required by the permit (frequency, sampling type
representative)?
Permit: NC0024201
Inspection Date: 12/14/2016
Owner - Facility:
Inspection Type: Compliance Evaluation
Merritech Labs is the contract lab. The facility lab ananyzes BOD, COD, TSS, pH, DO, TP
fecal coliform, and ammonia N.
Roanoke River WWTPPermit: NC0024201
Inspection Date: 12/14/2016
Effluent Sampling Yes No NA NE
Sampler temperature was 0.9 degrees C with no freezing.Comment:
Pumps-RAS-WAS Yes No NA NE
Are pumps in place?
Are pumps operational?
Are there adequate spare parts and supplies on site?
Comment:
De-chlorination Yes No NA NE
Type of system ?Liquid
Is the feed ratio proportional to chlorine amount (1 to 1)?
■ Is storage appropriate for cylinders?
# Is de-chlorination substance stored away from chlorine containers?
■ Are the tablets the proper size and type?
Sulfur dioxide is used as a back-upComment:
Are tablet de-chlorinators operational?
Number of tubes in use?
Comment:
10Page#
Owner - Facility:
Inspection Type: Compliance Evaluation
North Carolina Department of Environment and Natural Resources
Division of Water Resources
Permittee: Roanoke Rapids Sanitary District Permit Number:NC0024201
Facility Name: Roanoke River Wastewater Treatment Plant County: Halifax
Level of Treatment:
X None Primary Treatment X Secondary Treatment Chlorination/Disinfection Only
Estimated Volume of Spill/Bypass: 5,506,776 (must be given even if it is a rough estimate)
Did the Spill/Bypass reach the Surface Waters?X Yes No
If yes, please list the following:
Volume Reaching Surface Waters: 5,506,776 Roanoke RiverSurface Water Name:
Did the Spill/Bypass result in a Fish Kill? Yes X No
Was WWTP compliant with permit requirements?X Yes No
Were samples taken during event?X Yes No
Source of the Upset/Spill/Bypass (Location or Treatment Unit):
Influent Pump Station and Filter Effluent Pump Station
Cause or Reason for the Upset/Spill/Bypass:
Hurricane Mathew, High Flows
Describe the Repairs Made or Actions Taken:
Incident Started:
Incident Ended:
All efforts were made to minimize the bypass with flow equalization. 7,589,462 gallons of wastewater were
bypassed to the equalization tanks and to the trickling filters for some biological treatment.
Date:
Date:
WWTP Upset, Spill, or Bypass 5-Day Reporting Form
(Please Print or Type Use Attachments if Needed)
10/8/16
10/9/16
Time: 5:30pm
Time: 3:30pm
r
Action Taken to Contain Spill, Clean Up and Remediate the Site (if applicable):
N/A
Action Taken or Proposed to be Taken to Prevent Occurrences:
N/A
Additional Comments About the Event:
24-Hour Report Made To:Division of Water Resources Emergency Management X
Contact Name:George Vernard Date:10/9/16 Time: 10:43am
Other Agencies Notified (Health Dept, etc):
Person Reporting Event: Steven Ellis Phone Number: 252-536-4884
Did DWR Request an Additional Written Report?Yes X No
WWTP Upset, Spill, or Bypass 5-Day Reporting Form
Page 2
Raleigh Regional Office's phone lines are down. I did speak with Rick Bolich from the regional Office and
tojd_him we were calculating the totals for this report and would be sending it. The report number from
Emergency Management is EM43.
Qnill/D\DC?r\»-rrx (Aiiniio+ 001/1)

Roanoke Rapids Sanitary District
WASTEWATER SPILL IN HALIFAX COUNTY
C \(:MTs\rholich\AnnDat;«Unc*l\Micrnwft\WindouK\T«™rv»rnrv Inhrnrt FilftAContCTit Oiitlook\IIXJCRM2\16l(>09 Snill Pr«.«i Rrlfwe doc
Senate Bill 729, effective September 20th, 2014, modifies G.S. 143.215.1C by requiring issuance
of a press release within 24 hours (originally 48 hours) after the owner or operator has determined
a discharge of 1,000 gallons or more of untreated wastewater to surface waters of the State.
In accordance with the regulation, the following news release has been prepared and issued to
media in the affected county (ies):
The NC Department of Environmental Quality (DEQ), Division of Water Resources was
notified of the event on October 8th, 2016 and is reviewing the matter. For more
information contact Roanoke Rapids Sanitary District at [phone].
P.O. Box 308
1000 Jackson Street
Roanoke Rapids, NC
27870
[phone]
Fax: [phone]
www.rrsd.ora
Press Release
10/10/16,4:11 PM
Contact: Dan Brown, CEO
Via FAX: [phone]
On October 9th, 2016 Roanoke Rapids Sanitary District had a total wastewater spill of an
estimated 140,220 gallons from the wastewater collection system at nine different
locations: an estimated 30,600 gallons from Manhole 54, sub-basin 'A', located at 4th
and Laurel St. The spill began at 3:10 p.m. and ended at 4:30 p.m. A second wastewater
spill of an estimated 46,200 gallons from Manhole 46, sub-basin ‘G’, located off River
Road South. This spill began at 4:00 p.m. and ended at 2:00 p.m. A third wastewater
spill of an estimated 17,100 gallons from Manhole 46, sub-basin ‘B’, located at W 3rd St
and Starke Dr. The third spill began at 2:30 p.m. and ended at 6:30 p.m. A fourth
wastewater spill of an estimated 18,600 gallons from, Manhole 12, sub-basin B’, located
in W 2nd St and Franklin St. The fourth spill began at 3:30 p.m. and ended at 7:30 a.m. A
fifth wastewater spill of an estimated 9,600 gallons from. Manhole 13A, sub-basin B’,
located in W Ist St and Franklin St. The fifth spill began at 3:30 p.m. and ended at 7:30
a.m. A sixth wastewater spill of an un-estimated volume from a Manhole in sub-basin
‘C’, located at Kapstone Paper Mill. The duration of the sixth spill is unknown. A
seventh wastewater spill of an estimated 2,100 gallons from, Manhole 42, sub-basin F’,
located in E 13th St and Marshall St. The seventh spill began at 4:00 p.m. and ended at
12:00 a.m. An eighth wastewater spill of an estimated 2,700 gallons from Manhole 10,
sub-basin ‘M’, located in Gail Dr. The eighth spill began at 5:00 p.m. and ended at 2:00
a.m. A ninth wastewater spill of an estimated 13,320 gallons from, Manhole 52, sub­
basin ‘A’, located in W. 3rd St and Rapids St. The ninth spill began at 3:40 p.m. and
ended at 2:00 a.m. All listed spills occurred in Roanoke Rapids, NC, began on the 8th and
ended on the 9th, and the time durations are estimated. Untreated wastewater diluted by
heavy rains spilled into the waters of the state tributary to the Roanoke River in the
Roanoke River Basin when inflow into the sewer system from runoff of 8 inches of rain
due to Hurricane Matthew exceeded the cartying capacity of the pipes. Preparation is
being made for all known repairs necessary to reduce the source of inflow to return the
pipe system to service and minimize further discharge.
w
01 b
EDMR REGISTRATION FORM
Part A. PERMIT/FACILITY INFORMATION
NPDES Permit Number: N | C | Q | 0 |2 | 4 | 2 10 11 I1.
2. Owner/Organization Name:.DistrictR
3. Facility Name:.
4. Facility’s Physical Address:
Zip Code:.27890City:Weldon
PartB. OWNER USER INFORMATION
Title:PE, CEO
2. Mailing Address:.
27870
5.
PartC. USER ACCOUNT INFORMATION
Facility Administrator User Details
Permit No. (s):NC0024201
First Name:Steven
Middle Name:L.
Last Name:Ellis
Phone Number:[phone]
UserID:Email:(Assigned by DWR eDMR Administrator)[e-mail]
1NC eDMR Registration Form (Revision 4.1)
State of North Carolina
Department of Environmental Quality
Division of Water Resources
[e-mail]
User ID (Assigned by NCDWR eDMR Administrator):
Water Resources
1. Responsible Official's Name: R. Danieley Brown
(Owner or duly authorized representative)
1000 Jackson Street | PO Box 308_______
Roanoke Rapids State: NC Zip Code:
[phone]
City:
3. Telephone Number:
4. Email Address:____
1. Facility Administrator Permission
The Facility Administrator user permission can be assigned at the time of registration by the NCDWR
eDMR Administrator. If someone other than the Owner will be responsible for managing facility users
within eDMR and you would like the Division to set up the permission at the time of registration, then
please provide the user details for the individual who will need the Facility Administrator user permission.
Note: If this person will be responsible for submitting eDMR reports, then you will also need to request
Submitter permission for this user.
In addition to the user details, please specify the permit number(s) to which the user will be associated. If
additional space is needed, please make additional copies of the Facility Administrator User Details and
complete as needed.
nanoke Rapids Sanitary
Roanoke River WWTP_____
135 Aqueduct Rd
—State: NC
2. Submitter Permission
NOTE: The Owner will be responsible for creating all facility users except those with Submitter permissions.
I
■
Submitter User Details
■Permit No. (s):NC0024201
First Name:Steven
Middle Name:L.
Last Name:Ellis
Phone Number:[phone]
Email:User ID:[e-mail] (Assigned by DWR eDMR Administrator)
Submitter User Details
Permit No. (s):NC0024201
First Name:Justin
Middle Name:D.
Last Name:Blackmon
Phone Number:[phone]
Email:UserID:[e-mail] (Assigned by DWR eDMR Administrator)
NC eDMR Registration Form (Revision 4.1)2
Provide the users, in addition to the Owner, who will need Submitter permission. The Submitter user
permission can only be assigned by the NCDWR eDMR Administrator. The Owner specified above will be
given full eDMR permissions including Submitter permission.
In addition to the user details, please specify the permit(s) to which each user will be associated for eDMR
submittal. Should additional space be needed for users and/or permits, please make additional copies of
this page and complete as needed.
In addition to the Owner and Submitter user groups, there are four user types identified by user
permission level: Facility Administrator, Certifier, Data Entry and View Only.
The Owner and Facility Administrator will have the ability to create and manage facility users. The
Facility User Management Guide, located on the eDMR User Documentation web page, provides the
appropriate procedures for facility user management.
I
North Carolina General Statute § 143-215.6B provides that:
Any person who knowingly makes any false statement, representation, or certification in any application, record, report,
3NC eDMR Registration Form (Revision 4.1)
RESPONSIBLE OFFICIAL AUTHORIZATION
The Responsible Official, as identified in accordance with Part II, Section B.ll of the Standard Conditions for
NPDES Permits and 40 CFR 122.22, is the appropriate individual with the authority to sign applications or reports
for the Owner/Organization.
I, R. Danieley Brown
Roanoke Rapids Sanitary District
I understand that electronic submittal of the DMR does not fully satisfy US EPA's electronic signature
requirements and as a result, I understand I will be required to print, sign, and submit hardcopies (one signed
original and a copy) of the eDMR to NCDWR under the same reporting requirements as paper-based DMRs as
specified in Part II, Condition D (2) of the NPDES Permit.
(printed name), have the authority to make this request for
________(Owner/Organization Name).
August 4, 2016
Date
REGISTRATION CERTIFICATION
For the permit(s) associated with the Owner identified above, I request permission to submit DMR data using the
NCDWR eDMR system.
PE, CEO__________
Official Title (type or print)
I agree to protect the security of my user ID and password from compromise and shall take all necessary steps to
prevent its loss, disclosure, modification, or unauthorized use.
R. Danieley Brown___________________
Owner/Responsible Official Name (type or print)
____
Owner/Responsible Official Signature
plan, or other document filed or required to be maintained under this Article or a rule implementing this Article; or who
knowingly makes a false statement of a material fact in a rulemaking proceeding or contested case under this Article; or who
falsifies, tampers with, or knowingly renders inaccurate any recording or monitoring device or method required to be
operated or maintained under this Article or rules of the Commission implementing this Article, shall be guilty of a Class 2
misdemeanor which may include a fine not to exceed ten thousand dollars ($10,000). 18 U.S.C. Section 1001 provides a
punishment by a fine or imprisonment not more than 5 years, or both, for a similar offense.
eDMR Owner Verification Report
Permit No. :NC00242Q1 Version:4.00 ActivePermt Status:
Owner/Permittee :Roanoke Rapids Sanitary District
Responsible Official:R D.Brown
Resp. Official Title:PE, CEO
Facility Name :Roanoke River WWTP
Facility Address:135 Aqueduct Rd
Weldon, NC 27890
Registered for eDMR? :No
I
Facility Classification:WW-4.
ORC Name Certification #Cert Status ORC Designation
Ellis, Steven L.
Camp, Alan G.
Moseley, David F.
Pearce, James E.
Skipper, Timothy V.
Williams, Frederick B.
WW-4 / 994934
WW-4. / 6614
WW-4 / 994933
WW-3/ 1002151
WW-4/998187
WW-3./ 12731
Active
Active
Active
Active
Active
Active
ORC
Backup
Backup
Backup
Backup
Backup
Page # : 1
Date : 8/3/2016
Date:August 3, 2016
Subject:
To Whom It May Concern:
Individual #2 (if applicable)Individual #1
Mailing Address:
Sincerely,
|
Regional Office, Water Quality Permitting Sectioncc:
If you have any questions regarding this letter, please feel free to contact me at either the phone
number or email address below.
Delegation of Signature Authority
Facility Name:
NPDES Permit Number:
Raleigh_____
(Enter region name)
Waste water Branch
Water Quality Permitting Section
Division of Water Resources
1617 Mail Service Center
Raleigh, NC 27699-1617
PE, CEO
Title
Name:
Title:
lustin D. Blackmon
Utility Engineer_________
1000 Jackson Street
Roanoke Rapids, NC 27870
jblackmon@rrsd-org
[phone]
[phone]
Physical Address:
(if different)
Email Address:
Office Phone:
Mobile Phone:
R. Danieley Brown_____________________
Authorized Signing Official’s Name (type or prim)
1000 Jackson St. Roaonke Rapids, NC 27870
Mailing Address
[e-mail]____________________
Email Address
[phone]_______________________
Office Phone
[e-mail]
[phone]
[phone]
[phone]
Mobile Phone
Roanoke River WWTP_______
N|C|0 |0 |2|4 |2 |0 | 1|
Steven L, Ellis____
ORC___________
135 Aqueduct Rd.
Weldon, NC 27890
Authorized SigningQ/ricial’s Signature
By notice of this letter, I hereby delegate signatory authority to each of the following individuals for all
permit applications, discharge monitoring reports, and other information relating to the operations at
the subject facility as required by all applicable federal, state, and local environmental agencies
specifically with the requirements for signatory authority as specified in 15A NCAC 2B.0506.
2525373064 PR SANITARY DIST
Dan Brown
i
Dan Brown
Friday, June 24, 2016 11:21 AM
WPSCOCC ([e-mail])
Gregg Camp: Steven Ellis
RRSD WWTP Operator Designation
WWTP OPform.pdf
From:
Sent:
To:
Cc:
Subject:
Attachments:
Dan Brown | chief executive officer
Ph 252.537.9137 | Fax [phone] | Cen~252.885.0553 I Ema7di^n@7^rq
Delivering wfe drinking water while protecting environmental water quality
Roanoke Rapids Sanitary District
1000 Jackson Street / PO Box 308 | Roanoke Rapids, NC 27870 | www.rrsd.ora
Plft.-Kr consider rhe naturpl environment before printihR this e-mail,
Per,mit" NC00242fini ,or ,he biofogical facility named Roanoke R.ver Wastewater Treatment Plant the
bac up ORCS as mTSteVe" Lee E"iS tNUmber 9949341 Operat0r in ResP°"sibte Charge and supported by
Grew camn OR? °h the attached Water Pollution Control System Operator Designation Form dated June 16 2016 Alan
®.feh C 15 n0W Wastewat«r Treatment Plant Superintendent and will continue working at the plant in that caoacitv
de i nated auZr " dCSi6nated 35 a 0RC °n "here are no other ?
rieT’, d ? 0 C J®?..8"1 °r 'he Roanol<e River Wastewater Treatment Plant other than those listed on the attached
D gnation Form. Should you have any questions please do not hesitate to contact us.
Thanks!
PAGE 01/0306/24/2016 11:27
06/24/2016 11:27 02/03PAGE
Permittee Owncr/Officer Name:
ress:
Date'
County;A i;£
451oiogical Physical/Chemical Land Application
Date:
Email;
Signature:
Date:
Fax: [phone]
Revised 05-2015
Winjton-Snlcm
450 W. Hanes Mall Rd
Winston-Salem 27]05
Fax: [phone]
Phone: [phone]
Raleigh
3800 Barrett Dr
Raleigh 27609
Fax: [phone]
Fhone:919.791.4200
Operator in Responsible Charge (ORC)
Print Full Name:ElU$
2525373064
VVatc
Wilmington
127 Cardinal Dr
Wilmington 28405-2845
Fax: [phone]
Phono: 910.796.7215
Mooresville
610 E Center Ave
Suite 301
Mooresville 28115
Fax: [phone]
Phone: [phone]
Washington
943 Washington Sq Mall
Washington 27889
Fax: [phone]
Phone: [phone]
Fayetteville
225 Green St
Suite 714
Fayetteville 28301-5043
Fax: [phone]
Phone: [phone]
R- Qjn/c
Email: certadtniD^jjicdenr.gov
Mail or fax a to the Asheville
appropriate Regional Office: 2090 US Hwy 70
Swannanoa 28778
Fax: [phone]
Phone: [phone]
_ _ Email
Certificate TypeJGradc / Number: Wo 4 Work Phone #:
Signature:
RR SANITARY DIST
lluOoii Control System OpcratiAcsignation Form
WPCSOCC
NCAC ISA 80 .0201
Work Phone U; C2f2| 4-ftg4-
St EMIT A SEPARATE FORM FOR EACH TYPE SYSTEM!
Facility Type/Grade (CHECK ONLY ONE):
Collection Physical/Chemical Surface Irrigation
Phone #: fcSz) 5^7
_________
:e fm the facility noted J understand and will abide by the rules
15A NCAC 08G .0204 flnd failing to do so can result in DisciplinaryjSsSSSSSSSisr
Back-Up Operator in Responsible Charge (BU ORC)
Print Full Name. jllAK
Certificate Type / Grade / Number; 4 ^*4

rules and regulations pertaining t ih e reT/mibilines of Ui/bu'wCmTb forth NCAT m7 n<’"d ' ““dCTSI‘nd arld wil1 “b,de b>
Diselplin.r, ACnns by the Water Conrtol Sysfotn OpcX Com™sX W"”e d° ”
"'e 161® MaJ' SWVi" C™'"' "C 8
Mailing Address: Jqqq Sf,
City: State: Zip; 27^7q ■
Email address: g frfj.Qc^
Signature:
Facility Name: ftiye./
2525373064 PR SANITARY DIST
Facility Name:
Permit #:Ated^g.4-‘2Ol
f-
Raviged 05-2015
IVPCSOCC Operator Designation Form. cont.
Certificate Type / Grade / Number;
Si8”ahJre: Date: 0/^//^_______________________________
jMleS and regularions penX.ng w the responsibility of ^BL ORC^T’^ 1 undcTS,and and abide by the
Disctphnaty Actions by the Water Pollution Control System Opwalo^s Certification ComSon^ °205 S° reSU"
Back-Up Operator in Responsible Charge (BU ORC)
Print Full Name; -TifiJoKy
Certificate Type / Grade / Number;
---- Email: j
Work Phone n- (2^z)
Signature: _ ; ‘ s x---- ------ ------------------ Date:, /</,
rate regulars pcTaWngraBU ' undcT5l,"d "'il1 b/ ‘h'
D.scpbnan, Ach„„s hy ,1k WaKr Pol ,utlon COTttol Systcm 0pCTatons O8G 0205 and fa.hng <o do so can result in
Back-Up Operator in Responsible Charge (BU ORC)
Print FuH Name: M Enwi|:
Certificate Type / Grade /Number- c-k Phone #: <2£Z\
PAGE 03/0306/24/2016 11:27
Back-Up Operator in Responsible Charge (BU ORC)
Pnnt Full Name. Email;
Certificate Type / Grade / Number ^ Wolk phone
Signature: Date: _____________
roles and rogulatrons pcrtamngto Z™ sj^nstNKttw of tfcB^ ’ U’K,C‘5'1I’<1 ”"d 'v'll abide by the
D^pi.n.ry Actions by the w’ter PoHuti^n Control sX O^tors"c^” C^XO2°3 d° S° U
Back-Up Operator in Responsible Charge (BU ORC)
Prim fun Name Ema„
Certificate Type,^rade / Number. Work Phone #: (ZfZ) f3^4^

Datc:
roles and rep,latinos pertain,ng to the le^ons’biMc’ of ™BU ORcVs^K fonh NCA^CnsTT^ ’ U"d"5U"d ’"d Wlli abid= bX
Disc,pl,nary Action, by the Waler folhirion Con,ml Syrtctn Operates CertitalU Co™X’• °"d 8 “ d° ’° reSU"
ANNUAL PERFORMANCE REPORT 2015
H 1 0 7(
NC DENR Raleigh Regional OfficeI.GENERAL INFORMATION
A.
B.Responsible entity: Roanoke Rapids Sanitary District, Dan Brown, CEO
C.Person in charge/contact RECEIVED/NCDEQ/DWR
1.MAR 0 1 2016
2.
D. Applicable Permit(s)
1.
E. Description of C.S.:
The system has six sewer lift stations. Three stations are located in the Gaston, NC system.
One of these serves a Northampton County School, one serves the Chowan Housing Projects
Water Quality
Permitting Section
The Chockoyotte Creek Interceptor handles the south side of Roanoke Rapids and three sub­
divisions, Lake View Park, Greenbriar and Lincoln Heights, outside the Roanoke Rapids city
limits. The Interceptor begins east of Zoo Road. There is one primary basin pump station
along the route. Pipe size ranges from 12” to 30”.
C.S.: Gregg Wilson, Supervisor
David Warren Scott Operator in Responsible Charge (ORC)
Eric Wes Deaton, Backup Operator in Responsible Charge
Roanoke Rapids Sanitary District, Distribution & Collection
PO Box 308
Roanoke Rapids, NC 27870
Phone: [phone]
WWTP: Gregg Camp, Operator in Responsible Charge (ORC)
Greta Glover, Back-up ORC
Bryan Williams, Back-up ORC
Roanoke Rapids Sanitary District, WWTP
135 Aqueduct Road
Weldon, NC 27890
Phone: [phone]
The coLection system consists of approximately 130 miles of sewer lines. The sewer lines
within Roanoke Rapids, Gaston and all sub-divisions, which connect to the two main
Interceptors, range in size from 8” to 12”. There are two main Interceptors transporting
wastewater to the WWTP.
C.S.: North Carolina Environmental Management Commission Svstem-wide
Was:ewater Collection System Permit No. WQCS00027
The Roanoke River Interceptor collects wastewater from basins located on the north side of
Roanoke Rapids. The Gaston and Northampton basins are included in this service area. The
Interceptor begins just west ofNC 48 in Roanoke Rapids. There are 3 primary basin pump
stations and 2 secondary pump stations along the route. Pipe sizes for the Interceptor ranges
from 18” to 30”.
LpsSWWil
Regulated entity: Roanoke Rapids Sanitary District, Collection Systems (C.S.) and
Wastewater Treatment Plant (WWTP)
ROANOKE RAPIDS SANITARY DISTRICT
2. WWTP: NPDESNC0024201
Land Application (L.A.): WQ0001989
Stormwater (General): NCG110000
T
F. Description of WWTP:
II.PERFORMANCE
A. Description of overall 12 month performance, noting highlights and deficiencies:
The performance of the system in 2015 was good.
-2-
There are two pumping stations in the wastewater plant distributing wastewater into and
through the plant. Of these two pump stations, one has the capacity to pump 20 MGD and the
other 27 MGD respectively. Also, to aid these two pump stations; a storm water pump station
has been installed. This station intercepts rainwater, an unnecessary load to the treatment
plant, and removes it before entry to the plant. It has the capacity to pump 11.5 MGD. In
conjunction to these two pump stations there is one pump station with capacity of 21 MGD to
remove treated flows from the plant in the event of high river levels preventing normal gravity
flow discharge. Various others pumps and mixers are located throughout the plant for process
control.
The Fat, Oil and Grease (FOG) program initiated in 1995 has been a good tool in
preventing Sanitary Sewer Overflows (SSO’s). We also have a fulltime employee for the
FOG Program who specifies type and capacity of grease traps on an individual basis for
all developments, maintains all records and inspects all grease traps. He also educates all
restaurants and high density residential housing about grease and how it affects our sewer
lines. The use of local newspaper for FOG program educational ads and the distribution
of brochures to restaurants and fast food businesses have also been effective.
Maintenance of records and inspection of grease traps is an ongoing measure to prevent
SSO’s.
Secondary clarification removes solids from the activated solids process. Here, solids in the
presence of oxygen, ph control, and mixing, accumulate in excess. They are removed,
chemically stabilized, and added to a holding facility. All stabilized solids are analyzed and
land applied according to their nutrient value, ceiling and accumulative requirements.
Treatment processes at the wastewater plant include grit and rag removal. This is followed by
primary clarification, trickling filter biological secondary treatment, activated solids
treatment, secondary clarification, final effluent chlorination/dechlorination processes, and
final pH adjustment.
and the other station pumps all flows from Northampton County across the NC 48 Bridge
crossing the Roanoke River to the Roanoke River Interceptor. The remaining three pump
stations are located within the Roanoke Rapids system. Two of the stations, Belmont and
Poplar Springs, discharge to the Roanoke River Intercep~or while the Greenbriar Pump
Station discharges to the Chockyotte Creek Outfall.
The wastewater treatment plant is rated at 8.34 million gallons per day (MGD) Peak flow is
rated at 12.5 MGD.
During these processes solids are removed from two locations. Primary clarification removes
settleable solids from incoming wastewater to an anaerobic digestion unit. Here the solids, in
the absence of oxygen, receive pH adjustment, mixing, and heating to produce a stabilized
material. Once the solids are stable, excess water is decanted and returned to the plant for
further treatment. The stabilized, thickened solids are treated with lime for odor control then
removed to a holding tank to await land application.
1. C.S.:
The Roanoke Rapids Sanitary District’s collection system received its inaugural permit in
2001 under the North Carolina Environmental Management Commission Department of
Environment and Natural Resources system wide wastewater collection system­
permitting program.
-3-
There were 2 reportable spills in 2015 of the collection system. The District
employees were very diligent in getting these spills cleaned up and limed and back in
proper operation.
In response the District has maintained staff, critical parts inventory, equipment
inventory, made plans to better address extreme conditions, upgraded critical equipment,
planned back up or alternative operations, and requested better responsiveness from sub­
contractors. Responses are continuous and increasing.
The permit also contains daily maximum residual chlorine of 50 ug/1 (micrograms per
liter or parts per billion). Also permitted is pH. It must be maintained between 6 and 9
units. These two samples are grab or instantaneously collected.
Current plant capacity is 8.34 million gallons per day (MGD) with a peak flow of 12.5
MGD. For 2015 the yearly average low flow was 2.8 MGD with minimum of 1.2 MGD.
The yearly average high flow was 5.3MGD with a maximum of 14.0 MGD. The yearly
average total flow was 3.8MGD or 45.6% of the plant capacity. This is a decrease of
200,000 gallons per day. Rain can affect flows by inflow and infiltration. In 2015, 46.5”
of rain was recorded at the wastewater plant. The previous year 64.2” was recorded. This
is a decrease of 17.7” from the previous year. The decrease may be attributed to a lower
amount of rain in 2015 and the ongoing repairs to the collection system of the sanitary
district.
Under the current permit, the District has a weekly effluent total suspended solids (TSS)
limit of 45 mg/1 (milligrams per liter or parts per million) and a monthly limit of 30 mg/1.
Also a weekly carbonaceous biochemical oxygen demand (CBOD) limit of 37.5 mg/1 and
a monthly limit of 25 mg/1. These two samples are composite collected. They are
collected over a twenty four hour period and on a flow proportional basis. The higher the
flow, the more sample collected and conversely, the lower the flow, less sample is
collected. The yearly average for TSS was 19.2 mg/1 and CBOD was 5.4 mg/1. Using
yearly average influent values for the same parameters this calculates to a 89.2 % and
97.0 % removal rate respectively. The permit requirement is 85%.
The SC AD A system that monitors all lift station 24 hours a day, 365 days a year has
prevented lift station overflows. In addition, each lift station is equipped with emergency
generators on site to prevent overflows from power outages, except Poplar lift station. In
the event we have rain or outages predicted, a portable generator is placed at the lift
station in case it is needed.
Preventive Maintenance of at least 30 hours a week cleaning sewer mains has also been
an effective tool in reducing sewer backups and overflows. In 2015, District forces
continued proactively cleaning the mains of high density residential housing prior to
major holidays to prevent any grease related spills. The use of degreasers in pump
stations on a regular schedule has proven to be very effective in preventing lift station
down time. Also all pumping stations are checked and cleaned a minimum of once
weekly.
The District is keenly aware of and has been very responsive to increasing environmental
awareness. House Bill 1160, Clean Water Act of 1999, ratified by the North Carolina
General Assembly on July 20th and signed into law July 21st by the governor, has
heightened this awareness. This bill codified as Chapter 329 session laws became
effective October 1999.
2. WWTP:
Overall performance for 2015 was good. There were no NPDES permit limits violations.
There were no monitoring or reporting violations.
Some of the repairs, upgrades, or replacements in 2015 include the following.
-4-
Acid Feed System. Located at the beginning of the treatment process is an acid feed
system. It is located there in the event high pH’s enter the plant. There is local and
remote monitoring located at the station to alert personnel as soon as possible of a high
pH episode. High pH’s can cause damage to the operations of the plant. High pH’s can
also cause permit violation. The wastewater plant is permitted to keep pH’s below nine
at the discharge of its effluent. Sulfuric acid, 78%, is the chemical used to lower pH’s.
The system is exercised over the year to ensure reliability in the event it is actually
needed. During an exercise event the feed valve off of the acid tank was discovered
stuck. Apparently the valve used was incompatible with the acid used. An upstream tank
valve was used to isolate the feed system allowing for the stuck valve and coupling to be
replaced returning the functionality of the system. The plant is now protected in the event
high pH’s enter the plant. The high pH’s can now be neutralized with the addition of
acid.
Preliminary Station, Rotamat. The Rotamat is the first piece of equipment in the
wastewater process. It removes rags, plastics, paper, or other non-organic material before
they can enter other downstream processes. This is important to keep this material from
clogging pipes, binding pumps and mixers, and causing damage to other equipment.
Flow enters a basket area. As materials build up in the basket area, a sweeper arm comes
on to remove the built up items. The sweeper passes through a comb which causes the
material to be dropped into a screw auger for removal from the wastewater flow. The
Rotamat is controlled by an ultrasonic level indicator. When flows back up and rise in
the channel where the equipment is located it is an indication that the Rotamat has filled
with rags and needs to be activated to remove the rags. The ultrasonic level indicator
does this.
The Rotamat operates in a harsh environment under difficult circumstances. About every
ten years or so upgrades and repairs become necessary. It had been twelve years since
the first overhaul had been done. In 2014 monies were budgeted to do some significant
upgrades and repairs to the Rotamat. A date for pickup was scheduled and the
manufacturer, Lakeside, sent a flatbed 18 wheel truck to transport the equipment to
Illinois where the repairs would occur. A permanent gantry was installed years earlier for
lifting the 4800 pound piece of equipment to do onsite repairs and cleaning and for
removal to do offsite repairs. During the removal process the gantry failed and the
Rotamat fell into the roadway. A backhoe was used to complete the truck loading. After
factory inspection additional damage was discovered. The cost for the original upgrades
Influent Diversion Box. The influent diversion box is the first area of the wastewater
process. The open air collection pit is where the two main interceptors bring all the
wastewater in the District’s system to the wastewater plant. A 30” line, Roanoke River,
and a 36” line, Chockyotte, meet and blend at this location. From this point they are
piped to the first treatment process or preliminary station consisting of rag and grit
removal. The civersion has two slide gate valves. The influent gate when open allows
all flow from the Chockyotte and Roanoke River lines into the treatment processes of the
plant. Occasionally it must be closed to stop flow into the plant for downstream
equipment repairs. At this time all the flow is pumped to storage and returned to the
plant after repairs. This pump is also used to pump high flows from rains to storage. The
pump located at this position became inefficient due to wear and tear over time. A newer
pump was relocated into position. As a result the opposite reaction occurred. The newer
pump is extremely efficient with a very high pumping rate. Even at its lowest r.p.m.
setting the pump was pumping at a rate which was uncontrollable. To help remedy this
situation, a throttling valve was installed on the discharge pipe of the pump. Now flow
rates can be better controlled.
In 2015, the District continued to be very active in maintenance issues and concerns. The
WWTP spent in excess of $478,000 on maintenance and repairs to equipment, supplies
and materials necessary to operate equipment, sustenance of building and grounds, and
capitalized monies to replace and upgrade equipment.
-5-
The back-up collector, original equipment installed in the early 60’s, uses gravity to settle
grit to a sump pump which pumps to a screw conveyor for removal to a dumpster.
Although this equipment is much older and less efficient than the newer vortex
technology, the gravity system is maintained for use during times when the vortex unit
may be down for repairs.
Preliminary Station. Grit Collector. The grit collector removes grit from the influent
flow. Grit is removed at this location to prevent excessive wear on downstream
equipment. There are two grit collectors. One is the primary collector and the other is a
back-up. The primary unit, installed in the mid 90’s, uses a vortex motion to settle grit
out of incoming wastewater. A pump removes the settled grit from a hopper to a screw
conveyor for removal to a dumpster. Because this equipment is used to protect
downstream equipment, it and its accessory equipment endure extreme wear. The
removal pump will last a couple of years before need of replacement or rebuild. The
screw conveyor which receives the grit from the pump removes the grit to a dumpster. It
too endures extreme wear but will last a while longer than the pump before repairs are
necessary. It has been quite a while since its last repairs and was due. The pump that
was on line had been so for a couple of years. All mechanical adjustments to maintain
efficiency were done. Monies had been budgeted to replace it and in 2015 the new pump
was purchased and installed. The existing pump was removed before its worth was
beyond repair. Due to the short life spans of these pumps and the long lead time for
delivery of a new pump, the existing pump was rebuilt. The working mechanism,
rotating assembly was replaced and a new cutter bar and wear plate were installed along
with a new volute. Now a rebuilt pump is ready and on standby in the event issues arise
with the new pump. This set up now sets up a two year cycling maintenance rotation.
The screw conveyor of the grit collector is a two part piece of equipment. It has a water
stilling area, or hydrocyclone, where the grit is actually settled out from the removal
pump and the screw conveyor. The hydrocyclone, made from carbon steel, was worn out
and had lost efficiency. It was removed and rebuilt this time with stainless steel, a more
durable and long lasting material. Also the trough area of the screw conveyor was coated
with a durable epoxy material extending the useful life of this part of the equipment. One
final change planned for the screw conveyor was to change the dry bearing over to a
water flush bearing. This will be a better set up for this piece of equipment and will
extend the maintenance life of the bearing.
During the war. for the delivery of the Rotomat, a backup piece of equipment was used.
This is a manually raked bar screen. It was the remnant of a previously installed
mechanically installed rag remover. It is very inefficient and is only intended for a few
hours to a few days of use. It is also very labor intensive. Partially due to these
circumstances, monies were budgeted for 2015 to install a factory made manual bar
screen along with an accompanying rake, hopefully making use of the backup screen
more efficient and possibly less labor intensive. It is also constructed of a more durable
material, stainless steel.
and repairs plus the additional damage equaled or exceeded the cost of a new unit. A
decision was made to scrap the unit and purchase a new one. A budget amendment was
completed to add funding to the monies previously budgeted. A new Rotamat was
ordered. Also ordered was a new electrical control cabinet due to the fact that the
existing panel would not be compatible with the new Rotomat. After approximately eight
months the new Rotomat and motor along with the new electrical panel were received
and installed in late summer. While waiting for the new Rotomat, an accessory piece of
equipment was examined for repair. While the Rotomat actually removes incoming
debris from the wastewater, it deposits this debris into the screw conveyor for removal to
a dumpster. The auger did need some repair. The lower bearing was replaced and the
gearbox was rebuilt. In addition the trough of the screw conveyor received an epoxy
coating to add additional protection to the metal of this equipment. Installation of the
new Rotomat was completed in 2015.
-6-
The primaries are equipped with a load torque system. It is there to protect the drive
system at times when heavy loads my build up. The torque system will shut down the
primary before damage is done to the gearbox. In conjunction with the torque system the
primaries have shear pins which also protects the drive system. The torque system is an
electrical shut down system while the shear pin is a mechanical. In the event of excessive
torque, the shear pin can “shear” before the torque system shuts down the primary.
During the year both primaries had trouble with shearing pins. They were replaced in
both and it solved the problem with one of them. The other continued to shear the pins.
This clarifier was drained for inspection. The cause of the multiple pin shearing was
Primary Clarifier. Primary clarification is the first treatment process for the removal of
incoming wastewater organic solids. There are two. They are circular concrete tanks
seventy feet in diameter and twelve feet of depth which increases toward the center of the
tanks. At the very center of the conical bottom is a hopper. Wastewater enters in through
the bottom of a center column travels upward and outward where it meets a baffle wall
approximately three feet outward at the top of the column. The waste water flows
outward from the center column. This baffle wall slows down the flow of incoming
wastewater allowing the organics to settle out. They also have a surface sweeping
mechanism which removes floatables, grease, into a single 1500 gallon collection box.
There is also a bottom sweeping mechanism which rakes the settled organic solids into
the hopper. Both the sweeping and raking mechanism are driven by a single motor/gear
box mechanism. The grease collection box has a mixer in it to keep the grease from
solidifying and a submersible vertical chopping pump for removal to a stabilizing
treatment process. The grease is removed on an as needed basis, usually every third day.
The settled organics which by nature are abrasive are removed from the primaries by a
remote pumping building attached with piping to the hopper of the primaries. Horizontal
chopper pumps are used for the removal of the settled solids. There are two, one for each
primary. The settled organic solids are removed at regular intervals daily. The solids are
also sent to a stabilizing treatment process. During the course of the year several repairs
and upgrades occurred at this process.
All four pumps work together depending on flow. They are regulated by a pressure
transducer which senses the well level that the pumps pump down as it fills and empties.
All four pumps originally had packing “rope” around the shaft to prevent waste water
from entering the shaft and causing accelerated wear. Packing requires a great deal of
attention keeping it tight and replacing as it wears out. To eliminate this work demand
pumps can retrofitted with a mechanical seal. Once installed it needs no further attention
and lasts approximately five years before replacement is necessary'. In 2014 the last of
the four influent pumps was retrofitted with a mechanical seal. In 2015 this seal
prematurely failed and had to be replaced. The 2MGD and 4 MOD “workhorse” pumps
and ancillary parts had extensive repairs done to them. On different occasions both
pumps lost efficiency and had to be rebuilt. The motors of both failed and had to be
repaired. The couplings, which connect motor to pump of both, were deteriorated and
had to be replaced. Once these upgrades were complete the motors were laser aligned.
This procedure ensures the truest operation of the motor/pump thereby extending the
useful life of both. All the pumps are equipped with a check valve. This valve prevents
wastewater in the lines upstream of the pumps from running backwards through the pump
when in the cycle off position. The check valve of the 2 MOD pump began leaking
badly. It was rebuilt to stop the leak. The 4 MGD pump had several electrical issues.
The main breaker and the motor overloads failed and had to be replaced. The variable
speed drive was repeatedly tripping out. Upon investigation the cooling fan which keeps
the drive cooled during operation had failed. The fan was replaced restoring the drive to
proper operation. The electrical control for each pump is equipped with an electronic
informational display. This display provides numerous information about the run status
of the pump and errors about the electrical system. The display for the 4 MGD pump
failed and had to be replaced to restore this valuable status information.
-7-
The primaries are required to run twenty four hours a day, 365 days a year. In order to
monitor for failure, motion sensors were installed and incorporated into the SCADA
system. The sensors, mechanical were a trip switch mechanism. By nature, the
mechanisms took a lot of abuse due to the constant running of the primaries. The switch
would fail or the trip mechanism would get bent or fall off rendering the motion detection
inoperable. To improve this monitoring, electronic sensors have been installed making
reliability more dependable.
The level of solids in the primaries must be monitored for effective removal efficiency
and to prevent overloading. For years this was done manually with a device called a
“Sludge Judge”. It’s a hollow tube with measurement marks on it. It is lowered into the
primary until filled then lifted for visual measurement. A check ball keeps the contents
from releasing. This is an instantaneous reading that is done daily on a routine basis.
Now the primaries are equipped with an electronic ultrasonic measuring device. The
advantages with this device are that it continually measures and it is connected to the
SCADA system where it can be tracked. During the year one of the primary’s device
failed. It was returned to the manufacturer, repaired and put back on line.
These collection boxes have been tried to be level monitored over the years and tracked
with the SCADA system with no success. The ultrasonic level measures would not work
well due to the configuration of the collection box. A new system has been purchased for
trial. It is being used in other areas of the plant. The system is a multitrode. It’s an
electronic device that is actually installed into the collection box to detect levels.
In 2015, one of the mixers in the 1500 gallon grease collection boxes failed. It was sent
off for repair. Once returned it was returned to service. However, a change was made.
The mixer rests on the bottom of the collection box. It mixes well in the lower part but as
the box fills its efficiency drops well off. The collected grease in the upper part solidifies
making it difficult to pump out. This occurs even though a grease emulsifier is added in
on top of the solidified grease. To remedy this, a discharge extension was added on to
the mixer pump. Now the mixer moves the collected grease from the bottom of the
collection box to the top. This is keeping the grease in a more liquid form making
pumping removal easier. This mixing motion also distributes the grease emulsifier
throughout the collection box further enabling pumping capability.
excessive buildup of rags which placed the drive unit in a bind. The excessive rag
buildup was due to the lengthy down time of the Rotomat during the year. The primary
was cleaned and restored to service with no further pin shearing. Sometimes when solids
are in excess it may take two pumps to pump one primary. Having a spare assures two
pumps available at all times in the event one fails and has to be sent off for repair. It can
take over a month to have a pump rebuilt making a spare necessary. During the previous
year one of the on line pumps became noisy and inefficient. It was removed and sent off
for repair. In its absence the spare was put on line. Once repaired the pump was returned
to service and the spare stored for future use. As in ‘14 report, the grease collection
boxes are narrow. The valve that stops flow from entering the boxes from backflows is
located in the collection boxes. In addition to being narrow dangerous gases can build up
inside. From time to time the valves will get clogged with grease and have to be
cleaned. Entry into the box is awkward and dangerous if not properly done. Money was
budgeted to have the valves relocated making access easier and safer. An in-ground vault
was installed and the valve was moved here. During the relocation the piping was
noticed to be severely clogged. Time was taken to replace some of the piping and clean
some of the other.
Because of this, clean out ports were added to the vault making cleaning of the piping
possible without having to dig the piping up. While relocating the valve it was also
discovered that the flange around the piping exiting the grease collection box was broken.
Time was taken to replace the flange during the valve/vault relocation project. Plans are
to do the second valve/vault relocation project next fiscal year.
-8-
This pump station went online in 1983. All of the pumps over the years have had repairs
to them to maintain pumping efficiency. It was determined that both of the 7.9 MGD
pumps were in need of a major rebuild. One was budgeted for this year. The other will
be done the following.
Each aeration basin is equipped with a DO meter and DO probe. The DO is supplied
from the blowers. The probe is submerged in the wastewater and measures the DO and
transfers it to the meter. The meters can be monitored locally or remotely by SCADA.
The SCADA also has low and high set point alarms. It is important to maintain proper
DO. Too little and the microorganisms cannot perform properly. Too much DO can
cause microorganism destruction and system washout. It is also a waste of electricity.
In 2015 there were some minor electrical/electronic issues at this station. The 2.1 MGD
pump had an electrical relay failure and the pump stopped working. Once a new relay
was installed the pump resumed normal operation. One of the 7.9 MGD pumps was
noticed to be running erratically. The drive for this pump, previously repaired and
reinstalled for operation, was inspected. It was discovered that the electronic parameters
had not been reset correctly. Once reset the pump began normal operation.
Filter Effluent Pump Station. The filter Effluent Pump Station (FEPS) collects all
incoming flow that has traveled through the primary clarifiers and trickling filters. It then
transfers this water on to the secondary system for further treatment. This station is
equipped with four pumps. Their pumping capacities are 2.1, 7.9, 7.9, and 9.2 million
gallons per day (MGD). Here as with the influent pump station, the smaller pump is the
“workhorse”. At this station the two 7.9 MGD pumps alternate after equal run times to
aid the 2.1 MGD pump during normal flows. The 9.2 MGD pump is the high flow pump
at this station. The three larger filter pumps are equipped with variable frequency drives.
This allows the pumps motors to speed up and down as flows increase and decrease.
This is a more efficient way for the pump motor to operate and provides a smoother flow
through the plant. This is in contrast to a start wide open, stop immediately off operation.
Secondary System. The secondary system is the final biological treatment system
consisting of three square 500,000 gallons each aeration basins and two rectangular
1,000,000 gallons each secondary clarifiers. The basins which are aerated are the
“working” area of the system. Solids with microorganisms are mixed and aerated
providing an environment for wastewater stabilization. The clarifiers are the “resting”
and compaction area of the system. Solids settle to the bottom of the clarifier until they
are returned back to the aeration basins. As excess solids build up they are side streamed
to a solids stabilization process. The secondary system is operated by the use of various
valves and piping, control panels, traveling siphon bridges with valves and skimmer
arms, gearboxes, motors, pumps, and blowers. The system is also equipped with polymer
feed system. The blowers, two 75 horsepower (#1&#3) and two 100 horsepower
(#2&#4) are used to supply air to the aeration basins. The number of blowers is based on
dissolved oxygen (D.O.) demand. The demand is monitored with dissolved oxygen
meters and dissolved oxygen probes. The blower system is electronically controlled.
Because of this the blower system has to be maintained constantly. To help with this a
battery backup is used in the event of a power interruption.
Rotary Distribution (Trickling Filter). Biological wastewater treatment begins at this
phase of the waste water treatment process. There are two rotary distributors each 130’ in
diameter. Wastewater from the primary clarifier enters the center column of the circular
rotary distributor. The center column splits the water equally to four distribution arms.
The arms have holes (orifices) in the top which the water passes through then down the
front of the arm. This causes the distributor to rotate. Underneath the arms is a 5 foot
deep bed of rock. Microorganisms grow on the rock surface and as the wastewater
trickles through (trickling filter) the bed of rock, the microorganisms start cleaning up the
wastewater. The Rotary Distributors operated efficiently in 2015. There were no major
maintenance issues. Routine preventative maintenance was the only attention required.
-9-
One of the probes reading DO lost capability ii
was replaced, restoring DO measurement.
The clarifier drive system consisting of a motor, gearbox, pulleys and cable operate
twenty four hours a day three hundred sixty five days a year. Wear on these components
is normal and occasionally require maintenance. This occurred this year. One of these
systems on one of the clarifiers required this attention. The gearbox failed and had to be
replaced. Also the pulleys along with associated bearings and bushings were severely
worn and were replaced as well. The failed gearbox was rebuilt and inventoried for
future need. This inventory minimizes down time which is critical for this operation.
in one of the aeration basins. The probe
The traveling siphon bridge travels the entire clarifier length, 200’, back and forth
nonstop at adjustable speeds. This is the piece of equipment that picks up and returns the
settled “resting” solidsTnicroorganisms to the aeration basin or to the side-stream
stabilization process. It is pulled and pushed along with a 400’ cable and has side
stabilizer cables to help the unit run true. The forward/backward movement cable is
attached to pulleys. The pulleys are driven with a gearbox by a motor to propel the
bridge. A clutch mechanism is attached to the gearbox. It is a safety part. In the event
the bridge should get in a bind, the clutch will kick out the drive unit preventing
extensive damage.
One set of electrical sensor eyes are used to reverse the movement of the traveling siphon
bridge at each end of the rectangular clarifier. Another set of eyes are also used for an
alarm if the bridge “over travels”. An electrical control panel equipped with a variable
frequency drive computer is the brain of the operation. The traveling siphon bridge speed
is adjustable and is done so as operations of this unit is required. It is also a
computerized electronic device that works in conjunction with the drive computer. If
either of these computerized components fails the traveling siphon bridge ceases to
The purpose of the skimmer arms, two per clarifier or four in total, is to return organic
fioatables back to the aeration basin for further treatment. This is a normal occurrence.
These arms are attached to the front of the siphon traveling bridge. As they travel to the
effluent end of the clarifier they are automatically raised by a mechanical lift system and
propped up on the traveling bridge. This is important to keep the arms up in this
direction because if not the skimmer arms could pull the fioatables out into the final
effluent stream. The skimmer arms are automatically lowered to the surface of the
clarifier as it reverses and returns to the influent end where they skim the fioatables. At
the clarifier influent end there is a trough where the fioatables are deposited for return to
the aeration basin. Over the course of the year one of the skimmer arms broke and had to
be repaired so it would skim in the correct direction.
A major operational issue with the traveling siphon bridge is maintaining prime on the
siphon bridge. Priming is a regular operation procedure. Priming is done at the midpoint
of the two hundred foot long secondary. The siphon bridge must be stopped to be
primed. To make stopping the siphon bridge in the correct position, a remote start/stop
switch was installed at this point off the main electrical panel located at the end of the
secondary. The switch went bad and had to be replaced so proper positioning of the
siphon could be accomplished for priming.
There is a wetwell between the aeration basin and the secondary clarifiers. The wetwell
is equipped with pumps that return the solids from the clarifiers to the aeration basins.
The wetwell has a level meter and measurement probe. The level is important for
monitoring proper operation of the secondary system and possible equipment
malfunction. The measurement probe failed and had to be replaced to restore this critical
measurement. The pumps with this wetwell are mostly used one at the time and
alternated on a regular basis. This setup provides backup to this system operation.
During the course of the year one of the pumps and its motor failed. They were both
repaired returning the station to full operation.
of the year at different times each of these computers failed
- 10-
The hypochlorite feed received a needed upgrade change. Hypochlorite is very corrosive.
The pumps originally installed were diaphragm pumps. These pumps did a fairly good
job but after around eight years of use these pumps became unreliable mainly due to
external deterioration from the hypochlorite. These pumps were replaced with positive
displacement pumps. These pumps are more durable, should provide longer intervals
between maintenance needs, and will deliver a more steady state flow into the treatment
process.
The feed line material of the hypochlorite feed process is polyvinyl chloride (PVC) pipe.
A union connecting two sections of pipe developed a crack and leakage began. The
union was replaced.
The skimming mechanism of the secondary system is aided by the use of reuse pumps.
There are two. Only one at the time is used. They are rotated monthly. These pumps use
final treated wastewater that is pumped to the end of the secondary clarifier where it is
sprayed out through a nozzle system the width of the secondary. This spray system helps
keep the floatables near the end of the clarifier increasing the efficiency of the skimming
mechanism to deposit the floatables in the trough used to return them to the aeration
basins. During cold weather one of the valves associated with the pump froze and burst.
It had to be replaced before the pump could be returned to service.
The pump that feeds this chemical is greatly depended upon at times for meeting permit
compliance. For that reason a spare pump and parts are inventoried to minimize
downtimes. The online pump failed during the course of the year and was replaced with
the spare inventoried one resuming operation in short order. Using inventoried spare
parts this pump was rebuilt and inventoried for future use. The parts that were used were
reordered and inventoried for future use as well.
function. Over the course
and had to be replaced.
Disinfection. The final phase of the water treatment process is disinfection (pathogen
kill) and disinfection removal. Sodium Hypochlorite (bleach) is added to the wastewater
flow in sufficient amount to destroy potentially dangerous virus and bacteria. After this
process, Sodium Bisulfite is added to remove any remaining hypochlorite. This is
necessary because hypochlorite is hazardous to the aquatic life of the receiving stream.
The electrical panel is self-enclosed and weather protected. The drive system, when
originally installed was covered with a light weight fiberglass enclosure. Soon after
installation it was realized that keeping heat in the enclosure was necessary for winter
operation. Heal lamps were installed. This worked somewhat but was not very efficient
and required frequent bulb changing. Over the years these fiberglass enclosures
deteriorated. They were replaced with in-house made aluminum covers. The interior
was lined with insulation. These covers were more durable and held the heat from the
heat lamps better. The downside was that these enclosures were slightly larger, heavier
and cumbersome during removal from the drive system when it needed attention. An
operator on duty could not remove it. After several years these enclosures were replaced.
This time a small shed type enclosure was constructed. It was framed with square tubing
and covered with aluminum siding with a sliding door entrance. It was also insulated and
a thermostatically controlled heater was installed. Now heat is very well controlled and
contained, access was eased and there is enough room inside to work on the drive system
when needed.
At times for various reasons solids will try to wash out of the secondary clarifiers. If
washout becomes bad enough permit limitations could be violated. At these times
polymer, a solids settling chemical can be fed. It can also be used at times when
incoming plant solids are low. Feeding polymer will lower the outgoing solids therefore
increasing the percent removal percentage between incoming and outgoing solids. The
permit requirement is 85% removal.
A byproduct of the stabilization process is methane. It is captured and stored so it may be
used for fuel to heat the exchanger. The heat exchangers are also equipped to run off
natural gas as well at times when methane production may be low or outside temperatures
are colder requiring the use of supplemental fuel. For this operation, gas valves are
required for both types of fuel.
a regular basis per
t was
Water is recirculated through the closed loop water compartment to keep the warmest
water available for heat exchange to the solids recirculation side of the heat exchanger. A
small pump is located on the heater to accomplish this. One of these pumps failed and
had to be replaced for maximum heat exchange.
One of the heat exchangers closed loop water compartments began leaking. Fortunately,
one of these compartments had been budgeted and purchased previously due to an
extremely long delivery time for this part. It was installed and the heater was returned to
service very quickly. The leaking compartment was repaired by relining it with a metal
sheet. It is now in inventory ready for future use.
One of the heat exchangers had a problem with the solids recirculation side. The
recirculation is accomplished through a series of tubes. One tube began leaking and then
later another. The tubes were temporarily fixed with epoxy and gaskets. Parts were
ordered for replacement but it was decided to wait and budget for money to do a
complete tube replacement of the heat exchanger.
There are two types of gas valves. One is a gas controller and the other is a gas regulator.
There are two gas controllers on the supply line of each fuel type. This is a safety feature
of the system. Between the two heat exchangers this is a total of eight controller valves.
Each heat exchanger has one gas regulator valve. Each heat exchanger had a gas
- 11 -
The disinfection process area also incorporates the effluent caustic feed room. Caustic is
fed as necessary at the end of the disinfection process where pH’s can be depressed. The
pH must be above 6 to meet permit limits. Caustic is very corrosive and difficult to work
with. It is bad for leaking at pipe joints, unions and valves. Leaks can be dangerous,
hard to clean up and can etch concrete. This year on different occasions, leaks began at
the locations. One was fairly significant. All were repaired as developed. The leaked
caustic was cleaned up and collected for proper disposal.
Digesters and Stabilization. Digesters receive solids removed from the primary clarifiers.
With heat and mixing and occasional chemical addition (sodium hydroxide) for pH
control, solids are stabilized. There are two working digestion tanks and one resting
where solids compact before removal to storage and subsequent land application. Each
working digester is heated with its own heat exchanger. Each heat exchanger is a two
chamber piece of equipment. One side is a heat compartment with a closed loop water
recirculation compartment. The other side is for solids recirculation. This is how the
heat is transferred or exchanged.
The hypochlorite/bisulfite processes are located in close proximity to one another. Due
to this they share a spill containment offload station. Both chemicals are delivered by
tanker truck. Hypochlorite deliveries are usually about 6000 gallons and bisulfite around
3500 gallons. In the event of a spill during offloading of the chemicals it would be
contained. However, the grating on the station is in open air so rainfall enters the
contamment. To monitor this, the containment has an electronic level measuring device.
It can be monitored at location but is also monitored by SCADA which has a high level
alarm on it. If too much rain water accumulates in the containment it is removed before
offloading of the chemicals begins. The measuring device malfunctioned and had to be
replaced :o restore level monitoring.
The bisulfite pumps, still diaphragm type, need to be rebuilt on ; J...
manufacturer specification. Doing so will maintain pump efficiency. A rebuild kit
ordered for both pumps and installed.
- 12-
The gravity settling tanks are equipped with a motor and gearbox which are attached with
a shaft to a mixing paddle located inside the gravity :ank. Concentrated solids again
gravity flow into the thickener building to a progressive cavity pump that pumps the
solids with a steady state flow to the gravity belt thickener for additional thickening. The
There are four pumps set up for the digestion process. Two are used to recirculate/mix
the working zone (middle) digester contents through the digester heaters. One is
dedicated for each heater (two). One is for complete mix (bottom to top) of any digester
depending on valve set up. It can also be used as a backup recirculation pump. These
three pumps are centrifugal. The fourth pump, a progressive cavity pump is used to
remove digested solids from the digestion process and send the solids to storage for
eventual land application. During the course of the year one of the recirculation pump’s
motors has to be rebuilt. Also, one of the recirculation pumps had a rotating assembly
budgeted. It has been ordered and received. The rotating assembly is the entire internal
working parts of the pump. These parts require replacement on occasion to restore
maximum efficiency of the pump. Replacement is scheduled soon. The mix pump had
to be rebuilt and the motor had to be replaced. And the progressive cavity pump had to
be replaced.
controller valve replaced and one had a gas regulator valve replaced. Methane availability
can be increased by the use of a pearth unit located on the top of the working digesters.
Methane is directed to the pearth through pipe work. Il is then compressed and forced
back down into the digesting solids. This action liberates methane that is entrained in the
digesting solids. The net effect is the release of additional methane for heat exchanger
heating. One of the pearth unit compressors failed and had to be replaced.
During part of the year usually the warmer months more methane is produced than is
needed to fuel die heat exchangers. When this happens the extra gas is diverted through a
dedicated gas line to the roof of the building into a gas burner tower where it is flared or
burned off. The methane produced from the digestion process has impurities and can
cause equipment problems. These impurities over time clogged the gas line going to the
burner tower. If excess gas cannot be flared off it can upset the digestion process. The
gas line had to be replaced to restore flare off. Another byproduct of the stabilization
process is water. It collects in the digesters and the gas capture system. The water in the
digester must be removed to maintain “working” space in the digester. The removal is
done with a selector or slotted drain pipe located in the water collection area of the
digester. The control of water removed is with a valve and sight-glass located in the
adjoining digester building. Each digester (3) has this set up. The decanted water is
returned to the wastewater plant. Water is removed from the methane gas so it will bum
more efficiently and hotter. The removal is accomplished with the use of a drip trap.
They are strategically located throughout low spots in the gas piping system. Gravity
causes the water to flow into the traps. Specially designed, the traps can be opened to
drain off the water without releasing gas. This water too is returned to the wastewater
plant. Several traps seized up and new ones had to be ordered.
Biosolids Thickening. Excess solids from the secondary treatment process are thickened
by gravity settling tanks and a gravity belt thickener with the use of polymers. Polymers
when mixed with solids create a reaction which causes solids to concentrate (floc) and
water separate. The purpose is to minimize the solids removed from the treatment plant
because removal charges are based on the amount of gallons removed. Excessive solids
from the secondary system enter a pump station by gravity flow. From here the solids are
pumped to a gravity settling tank to begin the thickening process. There arejwo gravity
settling tanks and one gravity belt thickener. Current flows necessitate the'use of only
one gravity settling tank. This provides back up for the tank on line. The gravity settling
tank and gravity belt thickener can be used separately or in series. Wastewater operations
dictate which is used but normally the series option is used with the solids first entering
the gravity tank. The gravity settling tanks are switched regularly to ensure proper
operation and even wear and tear on equipment. The pump station is used to send solids
to the gravity settling tank.
The downstream process consists of three additional holding tanks also equipped with
mixers. One of these mixers failed. Money previously budgeted was used to purchase a
replacement. Here additional pH monitoring is done for a specified amount of time.
Once the solids are stabilized they are transferred to storage for eventual land application.
Million Gallon Stabilization Solids Storage Tank (MGT'i. The MGT stores all stabilized
solids from the digester stabilization process and the lime stabilization process. The
solids remain in storage until they are removed by an outside contractor for land
application to farm land. The solids contain nutrients that are used for fertilization. The
solids also contain water that is beneficial to the farm land. And the solids also help
remediate soil. The MGT contains five mixers that are used to keep the two different
stabilized solids blended, to help keep lime in suspension with the stabilized solids, and
for odor control. This year one mixer had to be removed for repair.
The dry lime is fed through the feeder into a preparation tank where water is added
creating a slurry. Lime slurry tanks are made in 300 gallon batches. Once well mixed in
the preparation tank the slurry is then gravity flowed into one of two 12,500 gallon
mixing tanks containing solids to be treated. The two mixing tanks are used alternately.
It may take anywhere from four to eight 300 gallon lime slurry batches to properly
stabilize 12,500 gallons of solids. The 12,500 gallon mixing tanks are equipped with
mixers to achieve proper blending of the solids with the lime and to keep the lime in
suspension. Once lime slurry is added to the solids in :he mixing tank and proper pH
level is reached, the treated tank is ready for transfer to a downstream process. A gate
valve located on each mixing tank is opened and the Treated solids gravity flow into a
pumping station for this transfer.
During the storage, water will still separate from the solids. Also the tank size, one
million gallons, is like a large rain gauge. This excess water is removed with a decent
system saving thousands of dollars each year. The savings comes from the number of
gallons removed. The outside contractor charges by the gallon. All the decanted water is
returned to the plant. No water was decanted in 2015.
- 13 -
During the lime truck to silo transfer a compressor automatically blows every few
moments through the bag keeping lime buildup to a minimum increasing effectiveness of
the bag capture. During use, the lime falls down by gravity toward a preparation tank.
To help this gravity fall a series of vibrators are located from the top of the silo to the
bottom.
Lime Stabilization. Waste activated thickened solids are stabilized through the use of
lime. Time and pH’s dictate the stabilization requirement. Lime is received in dry form
and is transferred to a storage/feed silo with a special lime delivery' truck. The truck
pressurizes and blows the lime into the silo. As it enters the silo the lime passes through
filter bag dust house. The purpose is control the dusty lime. This was accomplished.
However, an inspection hatch door on top of the lime silo had become bent and warped
over the years and some lime leakage still occurred here. The hatch door was replaced
and now when lime is added to the silo all leakage is now controlled.
valves tha^ allow gravity flow from the gravity tanks into the thickening building were
replaced. Once thickened the solids are transferred with a conveyor belt and deposited in
a stainless steel collection hopper. The hopper has an aluminum top for controlling
splash from the fall of solids off the gravity belt thickener conveyor belt. Solids are
removed from the hopper with a progressive cavity pump. The working parts of the
progressive cavity pump are the stator and rotor. The stator is a stationary rubber casing.
The rotor is a metal worm like shaft. As the shaft rotates within the stator it creates
steady state suction. The polymer used for the concentration of the solids and the water to
separate is received in a concentrated solution. It must be mixed on a regular schedule to
keep the contents from separating and becoming ineffective. A pump is used to keep the
polymer mixed. Due to the extensive repairs and upgrades in this area the previous year
little maintenance issues arose in this area of the treatment process.
- 14-
vents with an exhaust fan.
needed. Money for this project
of appropriate size was fabricated.
One suspension of the generator problems was dirty diesel fuel. Diesel fuel by nature has
contaminants. And, when there is a storage tank, use and fill application, a tank that’s
never emptied, these contaminants can build up. Once built up, generator fueling issues
can arise affecting its run performance. To correct this problem, the diesel fuel tank
contents were recycled through a filter system to clean up the fuel. This process will now
be performed annually.
The fuel tank level of the generator is monitored electronically and transmitted to the
SCADA system. SCADA has a low level alarm associated with it if the fuel level drops
below what has been determined to be an adequate level for generator use. The tank does
have a local measurement device but it is in an obscure location. The electronic device
failed and had to be replaced to restore the remote SCADA monitoring of the fuel level.
The equalization pump used for high flow bypassing to storage and for bypasses to
storage for maintenance to plant equipment was added to the
SCADA monitoring system. The pump is also programmed to run once per week for a
brief period to ensure reliability for times when its use is needed. Now with the use of
SCADA (Supervisor Control and Data Acquisition). SCADA is a computer-based
program. It brings site information into the central operations center. SCADA is a useful
tool by providing monitoring information to be used for more efficient plant operation. It
also brings remote site alarms into the operations center, which provides better control
over plant problems. The SCADA system was expanded to additional areas in 2015.
In 2015 the generator, now eighteen years old, underwent several repairs. The problems
experienced with the generator in 2014 continued in 2015. The problems occurred during
the switch over from Dominion power to generator power and generator power to
Dominion power when called on by Dominion for curtailment runs. This occurred on
three occasions which were followed up by repairs and or analysis inspections to identify
problems. One of the repairs included the replacement of the engine speed sensor and
regulator brick. Another was parts which can affect the switch between the generator
power and Dominion power. The curtailment contract with Dominion saves the District
money by having a lower rate fee. However, if the conditions of the contract are not
strictly adhered to fines are imposed. Even with the use of a seasonal waiver, the
problems associated with the generator did result in fines.
Even though the MGT is mixed constantly, lime still precipitates out. Over time it builds
up on the tank bottom. This reduces the effectiveness of the mixers. Approximately
once a year, the tank is emptied and cleaned to remove the built up lime. This time also
allows for the mixers to be inspected for wear and tear and an opportunity for the oil
levels to be checked. Also, the integrity of the MGT can be inspected. In 2015 the
million gallon tank was cleaned. The mixers were inspected and oil changed in them all.
Originally the million gallon tank was equipped with three mixers. It was determined
that three mixers were not adequate to keep the stored solids and lime in suspension. An
additional two mixers were added to the tank. This in turn added additional electrical
components to the electrical control cabinet. The cabinet became extremely hot
especially in the summer months. A quick temporary fix was to install some cooling
---- ---------------— To permanently cure this problem, a larger cabinet was
t was budgeted for 2015 and a new electrical control panel
Generator. The plant generator is used to supply the entire plant with power in the event
utility power is interrupted. The generator is on a quarterly preventative maintenance
program with a contractor to maintain the engine. However, if the transfer switch which
transfers power from utility to generator does not function properly the generator cannot
be used. The transfer switch is now also on a regular scheduled maintenance program
with an outside contractor.
Another means of spill control is with a backup generator. The wastewater plant must
continue to run in the event of power interruptions from the power-supply company.
Power interruption can occur from equipment failure, road accidents, and weather events,
such as ice storms, electrical storms, tornadoes, and hurricanes. A 750 kilo-watt
generator is or. site for events and can supply enough generated power to run the entire
plant. In 2015, there was one power interruptions resulting in the use of the back up
generator for power supply. This occurred on August 6* and was due to a power
distribution problem. The generator was used for three minutes and prevented 7,292
gallons of wastewater from bypassing.
The emergency generator is also used to curtail. The District is under contract with
Dominion Power. From May 16th through September 30th (summer curtailment) and
from December 1“ through March 31st (winter curtailment). Dominion can request the
wastewater plant to supply its own power for parts of the day during peak demand.
These requests usually come on the hottest days of summer and the coldest days of
winter. Dominion can then send power that the District would normally use to other
places of need. Winter requests are usually from bam to 1 lam (5 hours) but can be 5pm
to 10pm (5 hours) also possibly on the same day. However, each requests counts as one
run. Summer requests are from 2pm to 9pm (7 hours). The contract is limited. In the
winter requests to curtail are limited to 13 or 65 hours and summer 19 or 133 hours.
In 2015 the wastewater plant was called to run 16 times during the summer curtailment.
There were 12 winter calls. The District does incur the cost of diesel fuel. However, the
rate structure the wastewater plant has because of the contract off sets this cost and
provides electrical energy savings. An added benefit of this program is that it provides a
means to exercise the generator. This keeps the generator in better running condition and
exposes any potential problem. It would be better to find out a problem during a
curtailment tnan an actual power outage. Dominion does provide one waiver per
curtailment season each year for such cases where a mechanical issue should arise. By
-15 -
Also, to keep the SCADA computer working reliably and efficiently, the data from 2015
was unloaded on to an external hard drive.
12” pump installation. The 12 inch pump installed at the head-works of the plant in 2000
remains a valuable tool in preventing spills. In the event of high flows or maintenance
repairs, water can be removed to two abandoned secondary clarifiers. These clarifiers
were taken off-line in the early eighties after plant upgrades. They were originally used
for stabilized biosolids storage. The capacity was increased by extending a wall up from
where the weir overflows were when used as secondary clarifiers. This increased the
storage capacity of the two tanks to 750,000 gallons. After a dedicated biosolids tank
was constructed, the two abandoned tanks were dedicated to bypass contaimnent. Once
stored, wastewater can be returned to the plant with an existing pump station. Some pipe
work has been added to this station and depending on conditions, water could be returned
as the tanks are filled. This further increases holding capacity or downtime, during high
flows or maintenance and repairs. In 2015, 4,930,455 gallons of wastewater were stored.
Since setup in 2000, 71,044,041 gallons of wastewater have been prevented from spilling.
At the average flow of 3.8 MGD in 2015, this would be 18.7 days of flow.
th,S ™ time can be monitored. Emergency eyewash/showers are
located throughout the plant site. If one is used it could indicate that an employee may be
m need of assistance. To be alerted of this situation the eyewash/showers were set up on
. ?CADA Sy518111- 1116 SCADA monitoring system is now set up in three locations
within the plan:. If an eyewash/shower is used, personnel working at one of these
locations can alert personnel that assistance may be required at the alarmed
eyewash/shower site. The influent pump station basement is well below ground level. It
also has numerous water lines which are under very high pressure. These circumstances
could lead to water buildup and equipment failure in a short period of time. To manage
this issue, a water flood switch was installed in the basement and added to the SCADA
alarm system. Now if this alarm goes off attention can be given to a potential problem
before it escalates into a major problem.
- 16-
Since purchasing the land, investment improvements continued in 2014. Improvements
have been going on for nearly nine years. In 2015, the District over seeded the bermuda
with annual rye. Because bermuda goes dormant in cold weather months the rye over
seed makes the bermuda acreage available for nutrient uptake if application to this site
becomes necessary. The District has strived to develop a model site. In 2015, nearly
$11,700 was spent to maintain and enhance the application site. This included the rye
over-seeding of the bermuda and some additional attention needed at some of the
permitted fields. This included extra fertilization along with some potash treatment to
lower soil ph’s to recommended levels. In 2015 money was budgeted for additional
improvement to the district land. Previous use of the land was row crop. Because of this,
the land had stormwater drain swales. Stormwater drain swales cannot have biosolids
applied to them. These swales, no longer needed for the pasture use, are going to be
filled in. A budget amendment for $22,200 has been approved to accomplish this in
fiscal ‘15/’16. In 2015, the District’s site was used for land application. It was divided
into two sides with different vegetation on each side. One side has fescue and the other
bermuda. In September, application was done on both the fescue and bermuda sides of
the field. The fescue side received 694,000 gallons of biosolids over the course of five
days. The bermuda side received 248,000 gallons of biosolids over the course of three
days. The gallons applied to both sides did not exceed the maximum allowable
application as measured by the fescue or bermuda nutrient uptake
In 2013 the land lease came up for renewal. The District developed a land use
management plan and then advertised for bids. Sealed bids were received and reviewed
Sil?6 Trat°,r U^er a C°ntraCted qUarterl-v Preven«ve maintenance program
hopefully mechanical problems will be minimized or eliminated.
giosohds land application program. This program permitted by the Environmental
Protection Agency (EPA) ran well in 2015. In the required annual report to North
Carolma Division of Water Resources (NCDWR) and the EPA, there were no
deficiencies or spills. Ln 2015 there were 207 lime stabilization events at 11,250 gallons
per event for a total of 2,328,750 gallons. This is 57% of the days in a year. The
anaerobic digestion process produced an additional 244,250 gallons of stabilized solids.
Although these solids have met all requirements for stabilization, they are also limed.
This is done solely for the purpose of odor control. The wastewater plant has entered into
agreement with area farmers for the use of their land for biosolids application. The
farmers in turn receive the nutrient value, moisture content, soil remediation, and lime,
which is a by-product of ph control in the treatment process of the biosolids. If
necessary, additional lime can be applied. In converse, if the lime used in the
stabilization process causes the land pH to get too high, the district will add potash to
lower pH. There are 3100 acres, consisting of 128 fields, available in Halifax,
Northampton, and Warren Counties. In 2015, land in Halifax and Northampton counties
was used. All acreage was inspected, approved, and permitted by the State of North
Carolina. Using EPA approved treatment processes, 2,838,838 gallons of stabilized
biosolids were safely applied to area lands, consisting of 7 fields on three different farms
covering 256 acres, for beneficial reuse. Cost of this application process was
approximately $121,780. Cost of treatment to stabilize solids is separate. Land that grew
fescue, bermuda, rye, and soybeans was applied to. The amount applied in 2015 is down
23 % from the previous year. Charges for application are based on gallons. In an attempt
to save application costs, biosolids are thickened as much as can possibly be handled.
Although 3100 acres of land is permitted and storage of 1,000,000 gallons is available, at
times application is difficult due to weather conditions, crop status, and crop rotation.
Owning land would provide an outlet for these times. In 2004, the District purchased a
suitable land application site. It is located in Northampton County where the District
already has farmer owned land permitted. The land has been developed for livestock
(cow) operation. The area has been split into two fields. One contains 41.8 acres of
fescue and the other cotr.ains 67.2 acres of bermuda.
The contract is for a five
on-site monitoring
All industrial permits expired in 2012. Permits were renewed with an effective date of
May 1, 2012 and an expiration date of May 31,2017.
The laboratory submitted all required evaluation studies and received an acceptable rating
on all in-house study parameters. The laboratory received e-mail notifications from the
state laboratory certification unit on August 31, 2015 that it had received notification
from the proficiency testing provider that it was in receipt of acceptable evaluation study
results from the provider.
The laboratory has two full-time and one part-time technician, a laboratory supervisor,
and laboratory' manager.
The laboratory currently holds certification from NCDEQ/DWR Laboratory Certification
Unit. To maintain cerdfication, the laboratory must complete an annual performance
evaluation study and submit the results to the state certification unit. This performance
evaluation must be in the form of a “blind’ study. Study samples are ordered from a state
approved vendor. The study sample values are unknown to the laboratory. The samples
are analyzed and the results are submitted back to the vendor for grading. If the
laboratory fails to achieve an acceptable rating on a parameter for three consecutive
samples, the laboratory could lose certification for that parameter. If the certification is
lost, the laboratory must go through a recertification process as if they had never
achieved certification.
Additional requirements of the program include state inspections, quarterly in-house
blind studies, maintaining a quality control program and a chemical hygiene plan, a
chemical inventory plan, equipment calibration and certifications, and certification fee.
The laboratory also works in association with the pretreatment program and biosolids
program in that analysis of samples taken by pretreatment technicians and plant operators
are brought to the laboratory for analysis. Laboratory technicians are responsible for
- 17-
Industrial prefreatment program. In 2015 the industrial pretreatment program had
oversight of three significant industrial users. One user has a categorical discharge pipe.
Five non-sigmficant industrial users are permitted to send flow to the wastewater
treatment plant. Significant and non-significant status is determined in part by the volume
of flow discharged and the pollutants in the discharge. The pollutants, carried by certain
industrial wastes, determine the categorical status of an industry. Each industry, whether
classified as significant or non-significant, is issued a permit with limits and monitoring
requirements. In 2015 there were no significant industrial users in significant non-
compliance; a status based on the number and types of violations of the permit. There
were eight notices of violation sent for permit violations.
The pretreatment annual report (PAR) was submitted to the state pretreatment unit on
February 10, 2015. A letter, dated September 15, 2015, was received stating review of
the PAR indicates the report in good order and satisfied the requirements the North
Carolina Pretreatment, Emergency Response, and Collection Systems Unit (PERCS).
Monitoring Laboratory. The District wastewater plant has an on-site monitoring
laboratory. Analysis for NPDES reporting to the Division of Water Quality must be
performed by a certified laboratory. The laboratory is certified by the North Carolina
Division of Water Quality Laboratory Certification Section. In order to become certified
the laboratory facility must meet space and equipment specifications as well as analysis
performance evaluation. The laboratory is currently certified for twelve inorganic
parameters and four Vector Attraction Reduction options for the treatment of biosolids.
The laboratory receives samples from approximately 39 sampling points that include
plant monitoring, industrial monitoring, performance evaluation studies, septage hauling,
and collection system samples.
and afterwards awarded the lease renewal to the current lessee
year period.
There were no SSO’s or other major blockages that were attributed to FOG in 2015.
-18-
work on limited funds,
equipment certification.
There were no Notice of Violations and three Notices to Correct sent out in 2015. All
notices to correct were addressed in the allotted time.
FOG public education is a requirement of the wastewater collections system permit
WQCS00027. Ongoing efforts from 2014 continued in 2015 with the addition of a FOG
pamphlet enclosure in one billing cycle. The District has also aired several PSA’s about
FOG on the local radio station. The administrative staff continues to distribute a FOG
ordinance package to all new Food Preparation Facilities when opening a new account.
The administrative staff also gives out industrial waste surveys to each person who
opened a commercial account that asks questions regarding food preparation and grease
traps.
A new addition to the current NPDES permit was the additional requirement of a
Mercury Mimmization Plan (MMP). All waters of the state are recognized as mercury
impaired. As a result, a statewide fish consumption advisory for mercury has been
established. As a response, DWR has issued a statewide total maximum daily load
(TMDL). The TMDL calls for a 67% reduction in mercury levels. Most of the mercury,
98%, comes from atmospheric deposition. Only about 2% comes from point sources
such as wastewater treatment plants. Although the contribution of mercury from
waste water treatment plants is small, they have also been incorporated into the overall
The current permit comes with some significant changes. Due to a huge data base of
testing parameters from over the years and due to an exceptional performing facility,
reduction in the amount of testing was granted. Carbonaceous Oxygen Demand,
Ammonia Nitrogen, and Fecal Coliform were reduced from five days per week to two.
Also Annual Priority Pollutant Scans were reduced from one a year for four year to one a
year for three years.
National Pollutant Discharge Elimination System (NPDES) permit. The wastewater
treatment plant has an NPDES permit. It is issued by the North Carolina Division of
Water Resources (NCDWR) after final approval is granted by the Environmental
Protection Agency (EPA). The permit authorizes discharge of treated wastewater to the
Roanoke River. The current permit which became effective March 2013 is valid through
March 2017.
data entry into the plant operations spreadsheet used for NPDES permit compliance
monitoring and plant process control. P
In 2015, there were 52 restaurants in the District database. There were three new
restaurants to open in 2015. There were two restaurants to close during 2015 leaving a
total of 53. Inspections of the restaurants and updates to the database continued in 2015.
One restaurant relocated to a new building with a new outdoor trap. One restaurant
installed a new Automatic Self-cleaning grease trap to replace an old manual style trap
that was failing.
£ats3 Oils, and Grease (FOG) Ordinance. The Roanoke Rapids Sanitary District adopted
its first Fats, Oils and Grease (FOG) Ordinance in 2005. Since then operational issues
under the ordinance arose. In 2008, the District addressed those in a revision and
subsequent adoption of new ordinance language. In 2015, the ordinance was revised
again to include stronger language as to the sizing requirements of outdoor traps and the
insistence of outdoor traps where space is not an issue. There was also some language
that was remove that conflicted with state statutes.
The laboratory works in coordination with the state certification branch to certify field
testing equipment for the surrounding communities with small treatment facilities who
At this time, the laboratory assists five small facilities with
- 19-
Another testing requirement of the NPDES permit is the annual priority pollutant analysis
(APPA). As indicated, it is an annual test that checks the effluent for conventional and
non-conventicnal compounds, total recoverable metals, volatile organic compounds,
acid-extractable compounds, and base-neutral compounds. These substances, if found in
sufficient quantity, could be harmful to the wastewater plant, receiving stream, and the
public. To date, no substances have been found in significant quantity to cause harm.
The test is done seasonally over the first three years of the NPDES permit cycle.
NCDWR also requires an Annual Performance Report (APR). The report must contain at
minimum, general information, performance, deficiencies, violations, spills and bypasses,
any known environmental impacts, and corrective measures to address deficiencies or
violations. Also, from the APR a condensed Consumer Confidence Report (CCR) must
be distributed to the customers of the District with information on where to obtain the
APR. This information is posted on the Roanoke Rapids Sanitary District’s web site.
The wastewater plant has a general storm water permit. It was received through an
application process as required by the NCDWR. A requirement of this permit is a written
storm water management plan. The plan is used to evaluate potential pollution sources
and to select and implement appropriate methods to prevent or control the discharge of
pollutants to stormwater runoff. As a part of the plan, semiannual preventative
maintenance evaluations and semiannual inspections of site runoff areas are required.
Another requirement of the plan is annual employee training. The current permit expires
on May 31st 2018.
The Division of Water Resources (DWR) National Pollutant Discharge Elimination
System (NPDES) Unit conducted a site evaluation of the wastewater treatment (WWTP).
The site inspection was a comprehensive review of the plant processes. The inspection
was a result of NPDES permit the WWTP has been issued for discharging treated
wastewater into a receiving stream. It was renewed in 2013 and is effective until 2017.
This inspection occurred on April 2nd. The compliance inspection report received stated
that the overall condition of the facility was compliant with NPDES permit requirements.
A requirement of the wastewater plant through its NPDES permit is quarterly chronic
toxicity testing. The test involves using a predetermined amount of effluent along with a
macroscopic organism. The wastewater treatment plant contracts this test with a private
independent laboratory'. They collect sample and run the test. Ceriodaphnia are placed in
the effluent and must survive and reproduce for a specific length of time. Results of the
test are either pass or fail. A pass indicates the absence of substances in the effluent
which may be harmful or threaten aquatic life. The wastewater plant has been required to
test for chronic toxicity since April of 1993 or twenty two and one half years. To date
only one test has received a fail result. This occurred in July 2001. This test was
collected and tested by North Carolina Division of Water Resources (DWR). DWR has
run this test again with all passing. The latest was conducted in March 2011.
reduction of mercury in the waters of the state. Because the RRSD WWTP has a flow
above 2 MGD and has detectable mercury in its effluent, the MMP is required
Typically, MMP’s focus on three areas. First, an internal WWTP review of mercury
containing products and their disposal. Secondly, pretreatment controls on non-domestic
users. And third, outreach to the general public regarding the proper use and disposal of
mercury containing household products. DWR provided a model MMP which could be
adopted or a completely independent plan could be developed. The RRSD WWTP used
the state s model with some of its own additions. The permit had a development date
requirement which was met. MMP’s do not have to be submitted to DWR for approval.
The plan only has to be available for review by DWR plant inspectors. Two years after
the development deadline date implementation must begin. A summary of the plan’s
activities will be submitted as part of the next NPDES permit renewal process.
The Division of Water Resources (DWR), Water Quality Regional Operations Section
(WQROS) conducted one site inspections in 2015. The site inspection was a solids
-20-
The district has a Safety Committee that conducts site inspections monthly and makes
recommendations for improvement.
The Roanoke Rapids Sanitary District was inducted into the STAR Program in late 2013.
While much work was completed in preparation for this program, it takes a great quantity
of work to maintain the status. In preparation, all buildings and grounds were inspected
and ensured that they were acceptable to the OSHA and NC OSH standards. All policies
and procedures were reviewed to ensure the district’s program was sustainable.
One of the requirements to be in the Carolina Star Program is that annual report must be
submitted, and then reviewed by North Carolina Department of Labor staff to ensure
compliance and sustainability. The 2014 Star Annual Report was submitted late in
February of 2015 and accepted as submitted. Within this report, the district sets specific
goals to achieve throughout the year. The self-imposed goals for the year were to
implement an AED (Automatic External Defibrillator) Program and to investigate and
improve on eye-wash and showers near chemical locations. The eye-wash and showers
were evaluated and found to be adequate, but were improved upon by tying them into the
SCADA monitoring program. The AED Program is currently in the office of the Medical
Director at Halifax Works for review and should be completely implemented in 2016.
For maintaining status, all employees receive monthly safety trainings and are
encouraged to participate in the safety program. In December 2015, the district’s Board
of Commissioners adopted an Incentive Program rewarding all employees for their active
engagement in the safety program.
Safety program. The safety program within the District is very active and assertive in its
approach to the protection of the employee. The program consists of a safety officer that
is Manager of Environmental Safety and Health (MESH) Certified. The safety program
is also comprised of a safety committee, incident/accident committee and appeals
committee. The safety officer also sets up the monthly safety meetings, coordinates the
activities of the safety committee, keeps up with safety regulations, and many other
various safety activities. The safety committee prepares safety policy programs and
updates current ones. They also do site inspections and produce potential hazard punch
lists. The safety committee and safety officer also keeps up with and prepares for
updating regulations and integrating new regulations of OSHA. The incident/accident
committee reviews all potential accidents and accidents. The appeal committee follows
up the safety committee recommendation at the request of an employee. The attempt is to
minimize the seriousness of an accident and ultimately prevent accidents. As a result of
the awareness and training from the safety program, there were no loss work days in 2015
at the wastewater treatment plant. This makes the 10th straight year the wastewater plant
achieved this accomplishment. The Sanitary District was previously involved with the
Nonh Carolina Department of Labor (NCDOL) OSHA SHARP Program. NDOL works
with and inspects companies by company’s request. After DOL requirements are met,
companies are awarded SHARP recognition. Participating in this program exempts
companies from unannounced inspections with possible fines. The District remained in
this program for several years before NCDOL restructured the program and removed the
District from this program. The correct program now is the STAR Program.
generation and land application inspection. The inspection was a result of the Land
Application of Residual Solids permit the WWTP has been issued. It was renewed in
2007 and is effective until 2016. This occurred on September 10th. Areas evaluated
included review of required records, facility equipment evaluation and operation and a
site visit to one of the most recent areas residuals were applied to. In addition, sampling
and storage were inspected along with other miscellaneous questions in regards to the
program. The compliance inspection report received stated that treatment and storage
units were well maintained and documented and that the Residuals Management Program
was compliant.
2. WWTP: N/A
Bypass of Treatment Facility
C. Description of any known environmental impact of violations.
-21 -
B. By month, list of the number and type of any violations of permit conditions,
environmental regulations, or environmental laws, including (but not limited to):
The District is committed to engaging employees in the STAR Program and continues to
improve the safety attitude of all employees while providing a safe and healthy
atmosphere in which to work.
In addition, a result of the STAR program initiated the need for an electrical energy
survey. This survey is to identify the electrical hazards of the treatment system and
inform employees on the safety aspects on working on and around energized equipment.
This required the need for an outside contractor. The contractor was hired to perform a
short-circuit study, protective device coordination study and arc flash hazard analysis.
These analyses develop electrical safety program which includes hazard identification
and risk evaluation procedure. All equipment was analyzed for potential risk. Then
labels were attached identifying the danger of working on energized equipment and the
necessary information and required personal protective equipment for working on the
equipment safely. The District developed a written program as well. The employees
then went through an arc flash training program.
The District employees a Safety Officer that is MESH certified, and also is the Chairman
of the Northeastern Safety Council. The Safety Officer regularly attends advanced
training in pursuit of continuous improvement. One of the main goals of the district is to
continue to improve the safety attitude of all employees while providing a safe and
healthy atmosphere in which to work.
Monitoring and Reporting Violations
1. C.S.: None
2. WWTP: None
Another requirement is that the district participates in the Star Annual Conference, a three
day conference including safety presentations, roundtable discussions, and seminars. The
2015 conference was held September 16-18 at which the district had three employees in
attendance and actively participated in the registration process.
Permit limit violation
1. C.S.: None
2. WWTP: None
2015 Sanitary Sewers Overflows (SSO)
1. C.S.: There were 2 reportable SSO in 2015.
1. 12/14/2015 Manhole 27vBasin K est. 1000 gals.
2. 9/1/2015 111 Shell Dr. est. 1260 gals.
1. C.S.: None
2. WWTP: None
1. C.S.: N/A
WWTP: One During a Dominion requested curtailment, the plant generator failed.
Due to a transfer switch problem, 44,900 gallons was bypassed before Dominion power
could be restored. This took place over a twenty minute period on January 7th, 2015.
2. WWTP: N/A
Bypass of Treatment Facility
C. Description of any known environmental impact of violations.
-21 -
The District is committed to engaging employees in the STAR Program and continues to
improve the safety attitude of all employees while providing a safe and healthy
atmosphere in which to work.
Monitoring and Reporting Violations
1. C.S.: None
2. WWTP: None
In addition, a result of the STAR program initiated the need for an electrical energy
survey. This survey is to identify the electrical hazards of the treatment system and
inform employees on the safety aspects on working on and around energized equipment.
This required the need for an outside contractor. The contractor was hired to perform a
short-circuit study, protective device coordination study and arc flash hazard analysis.
These analyses develop electrical safety program which includes hazard identification
and risk evaluation procedure. All equipment was analyzed for potential risk. Then
labels were attached identifying the danger of working on energized equipment and the
necessary information and required personal protective equipment for working on the
equipment safely. The District developed a written program as well. The employees
then went through an arc flash training program.
The District employees a Safety Officer that is MESH certified, and also is the Chairman
of the Northeastern Safety Council. The Safety Officer regularly attends advanced
training in pursuit of continuous improvement. One of the main goals of the district is to
continue to improve the safety attitude of all employees while providing a safe and
healthy atmosphere in which to work.
Another requirement is that the district participates in the Star Annual Conference, a three
day conference including safety presentations, roundtable discussions, and seminars. The
2015 conference was held September 16-18 at which the district had three employees in
attendance and actively participated in the registration process.
Permit limit violation
1. C.S.: None
2. WWTP: None
2015 Sanitary Sewers Overflows (SSO)
1. C.S.: There were 2 reportable SSO in 2015.
1. 12/14/2015 Manhole 27vBasin K. est. 1000 gals.
2. 9/1/2015 111 Shell Dr. est. 1260 gals.
B. By month, list of the number and type of any violations of permit conditions,
environmental regulations, or environmental laws, including (but not limited to):
1. C.S.: N/A
WWTP: One During a Dominion requested curtailment, the plant generator failed.
Due to a transfer switch problem, 44,900 gallons was bypassed before Dominion power
could be restored. This took place over a twenty minute period on January 7th, 2015.
1. C.S.: None
2. WWTP: None
D.Description of corrective measures taken to address violations or deficiencies.
1.C.S.:
2.
-22-
MJ Price Construction and District employees together cut and cleaned 53,145 feet of
outfall and cross country lines.
The District has secure contracts with Step Construction to repair and replace parts of
Outfall G and with Herrin-Rivenbark, Inc. to find and fix on Outfall C & D to reduce
future I & I problems.
The District contracted with Ralph Hodge Construction to replace 60’of
21 with 24” DIP with 401 Liner across creek behind Kapstone.
16” ductile Iron with 401 lining.
RRSD secured a planning grant from The Rural Center in 2012 to further evaluate the
Belmont area. The District employed W. K. Dickson to conduct a study including more
smoke testing, manhole evaluations and storm water dye testing to locate sources of I&I,
which has been the root cause of many reportable spills over the past few years.
District employees cleaned 36.20 miles of sewer line a CCTV all suspect problem areas.
WWTP:
The WWTP is very aggressive in reacting to violations and identifying potential
deficiencies. Once identified, plans are made to upgrade or replace potential deficiencies,
which may result in violation. Modifying operations, training operators, laboratory
training, improved equipment, maintenance inventory parts and equipment and raising
awareness is also an on-going and continuous process.
During 2015 District employees performed 12 point repairs on sev/er lines.
1. Behind Halifax Farmers 84’ from manhole in West 11th St.
2. Behind Halifax Farmers at 1101 Roanoke Ave. 51’ from manhole 82
3. Behind 1123 Roanoke Ave. in Jackson St. bypass 271 from manhole 82
4. Behind 1022 Franklin St. in Alley 78’ from manhole 22.
5. 802 Henry St. 279’ from manhole 28.
6. Intersection of 8th and Henry St. 16’ fron manhole 29.
7. 48 Vance St. 207’ from manhole 30.
8. 310 Charlotte St. 173’ from manhole 166.
9. W. 11th St. at alley between Franklin and Henry St.
10. Between E. 9th and E. 8Ih St. on Jefferson St.
11. 236 Jefferson St.
12. Intersection of 3rd and Jefferson.
13. 310 Charlotte St.
14. 825 Jackson St.
15. Ill Shell Dr.
16. 1403 West Chaloner Dr.
RRSD continues to performed preventative maintenance by cleaning with Jetter and a
Root cutter which is attached to the Jetter hose for cutting roots, following with a CCTV
camera to inspect the lines after cleaning. The District also uses our Vac-con Truck
which cleans the line more effectively and proves to be more reliable than the old unit.
We also had our camera van upgraded to more modem technology to help us find
problems in our lines, that works well with the Vac-con truck to find infiltration in our
lines.
The District contracted with JCB Construction Co. to repair 5 Manholes with Triplex
Liner System.
Secondary clarifiers can have solids washed out during periods of high flows.
Operational strategies have been put into place to minimize this.
A permit requirement of the wastewater treatment plant is to discharge pH’s in the 6-9
range. The latter stages of the treatment process have a tendency to lower pH. For this
reason the plant stores a chemical on site to feed if pH’s drop too low. The chemical
used is 25% liquid sodium hydroxide (caustic). Caustic is notorious for forming leaks at
-23 -
The vortex grit removal system is equipped with a screw auger removal system. The
bearing of the screw auger wears and after time begins to leak wastewater. Small leaks
are directed back into the wastewater process. Before becoming uncontrollable large
leaks the bearing is replaced.
Primary clarifier influent lines have grease collection pits located on them. As the pits
collect grease and fill, the flow through the influent lines can be restricted, back up, and
cause spills. To prevent this from occurring, a vacuum truck is scheduled regularly to
remove the excess grease and keep the lines unrestricted.
Access to the secondary' clarifiers drive assembly was an awkward set up for years. To
remedy this, the size of the enclosure was significantly increased. The drive assembly is
easily accessed now but it created a safety issue. The drive assembly consisting of
pulleys and a cable system were openly exposed. To remedy this, expanded metal cages
were fabricated to cover these moving parts.
To help with rag issues in the future at times when the Rotomat may be down, a precision
industrial made manual bar screen with a rake specifically designed for use with it has
been ordered to replace the homemade manual bar screen and rake. Although it probably
still won’t be as efficient as the Rotomat it still should be an improvement over what is in
place now.
The Godwin 12 inch pump is now the pump set up to help control high flows and for use
for certain maintenance jobs. The flow rate with this pump is hard to control. To remedy
this, a throttle valve was added to discharge piping of the pump.
The Rotamat removes incoming rags to prevent downstream problems. During the time
the Rotomat was out, the plant suffered severe problems with rag buildup issues in
several areas of the plant site. Part of everyday was spent unclogging pumps, mixers and
other plant equipment mainly associated with the beginning states of the plant and with
the biosolids treatment processes. Many man hours were required to keep these units and
processes running. It even caused some equipment damage that required repair costs.
However, when the new Rotomat was installed these problems ceased.
There are two channels that direct flow into the plant. Usually only one at a time is used.
Occasionally, high flows will deposit significant amounts of sand and rock. When this
happens a vacuum truck service company will be called in to remove the debris.
One of the larger influent pumps had a mechanical seal failure. This failure if not
attended to promptly could cause flooding of the station. The pump was taken off-line
and a new seal installed.
Some of the work done to prevent problems is the identification of potential spill areas.
Once identified, arrangements are made to stop or minimize and contain.
The newly installed acid feed system is at the beginning of the plant processes. Its
purpose is to control high pH’s which could occur in the incoming wastewater that could
harm or destroy downstream treatment systems possibly causing permit violations. The
system is briefly tested on a monthly basis. During one of the monthly tests, it was
discovered that the feed valve could not be opened. Upon investigation it was discovered
that a valve was used made of material not compatible for acid use. The valve was
changed out and replaced with the correct style so acid may now be used if needed.
-24-
The hypochlorite bulk storage tanks, which came on line in 2010, are now on an annual
inspection program. The hope is to catch a problem, preventing a catastrophic spill.
In the biosolids thickening, stabilization, storage and disposal area of the plant, there is a
large amount of piping and valves that were particularly susceptible to freezing and
bursting in cold weather. Over the years these areas would be wrapped with regular
household insulation then covered with plastic and secured with duct tape. This would
last through a couple of winter seasons before weather conditions would deteriorate it to
the point of requiring another application. An industrial insulation company was brought
in for a permanent covering of these areas. First heat tape was applied. Then a foam
insulation covering was added. Finally these were wrapped with a metal (aluminum)
covering.
The plant operator, alone nights, weekends, and holidays is provided a cell phone. It
serves a twofold purpose. One, it serves as constant availability for incoming or outgoing
service. Two, it is a safety feature. However, due to the site location and other variables,
it does not work well in one part of the plant site. To help with this problem, a land line
phone was added centrally to this site area. It was installed with an internal room ringer
and an outside loud speaker which can be heard over the entire area where the cell phone
has trouble with reception.
There are seven gantry and hoist systems located throughout the plant site. After a failure
of one these seven, closer scrutiny of the remaining six occurred. It was discovered that
two of the remaining six had no documentation citing engineering certification and load
testing. Load tests are one time requirements. One of the two was original installation in
the early 1960’s and the other was added in the late 90’s to early 2000’s. An engineer
was hired to certify ths two gantries. This was followed up by bringing in a gantry load
testing company. Now all plant site gantries have been certified and load tested. The
accompanying trolleys and hoists for the seven, now six gantry system, have been
annually inspected for many years even on the two gantries that previously were not
certified and load tested.
The digester building has an external gas monitoring system. It checks for levels of
oxygen, combustibles, and hydrogen sulfide. All of these could possibly be an issue in
pipe joints. It can make its use dangerous because of its corrosive nature. Several leaks
occurred in different locations requiring some piping, unions and valve replacement.
This restored safe use of this system.
During the construction of the disinfection/disinfection removal process, a truck
unloading containmen: structure was installed. The structure is piped to a pumping
station equipped with pH alarms that are tied to the SCADA system. This provides
acknowledgement and control over a spill situation that may occur during chemical
delivery. The spill containment grating is open air. Normal rain can fill the containment
system. This would prevent collection in this system and a spill could occur. Level
indicators were installed on the containment system with SCADA. Now rain water, as it
accumulates, can be removed. Also, before each chemical deliver}' the system is pumped
down. The system is also pumped down regularly by assignment. To further control this
area, the discharge valve is kept in the closed position and the pump turned off.
Low influent suspended solids can occur after rains making the 85% removal difficult.
Polymer can be fed into the secondary clarifiers aiding settlement of solids and help with
the 85% removal rate.
Training and directives have been put in place to prevent icing problems and equipment
failure that can result from the scum control spray system on the secondary clarifiers.
This problem can also be caused by freezing rain, sleet, and snow. Cables have also been
installed to keep the equipment that gets damaged protected.
-25-
Temporary pumps and hoses are used frequently. Hoses easily spring leaks. To prevent
hose leaks while pumping wastewater or biosolids, lay flat hose was replaced with
reinforced cancline hose.
The plant generator is capable of powering the entire plant in the event of power loss.
Without it, spills would occur. It is on a contracted quarterly preventative maintenance
program. Also, the transfer switch which transfers incoming power to generator power is
under a preventative maintenance contract. Annually it is taken off line, disassembled,
inspected, and cleaned. Without a properly operating transfer switch, generator use is not
The plant site has many hundreds of lights throughout. They primarily were standard
florescent and metal halide. They were located as internal lighting, exterior pole lights
and interior/exterior wall paks. As of now approximately 90% of these lights have been
converted to LED lights. These lights produce more brightness, cost much less to
operate, and last longer before replacement is required.
The plant has many pieces of equipment that use gasoline and diesel fuel. For years these
pieces were hand filled with fuel using five gallon cans. This was an awkward way to
service this many pieces of equipment and required constant trips to the gas station for
refilling. To improve this, a two compartment fuel tank (one for diesel, one for gasoline)
each approximately fifty gallons was purchased. Also purchased was a trailer to mount
the tank. In addition a battery operated hose and pump was added to each tank for easier
(and safer) way of dispensing into equipment. By being trailer mounted is can be driven
to the gas station and also used to service equipment that may be located at various areas
of the plant site.
A valve exercise program is now employed. It keeps valves in good working order. In
the event of routine maintenance, equipment problems, or emergencies, valves used to
address these issues are in a state of readiness. As valves are repaired or replaced, they
are added to the exercise list. There are hundreds of valves located inside and outside of
various areas. Each operator has a list of valves to exercise.
The plant storm water drains are blocked and gated to help control spills that might
otherwise be released from the plant site. Although painted bright yellow, they were
struck and broken on occasion. A new design keeps the containment from being easily
struck. Also, flags on poles have been added, further increasing visibility.
this building and could be life threatening. It failed this year and a handheld meter could
be used until its repair. The repair is now complete.
When the million gallon tank electrical cabinet was replaced to improve function there
was a small area left energized if only the local disconnect was used which is the normal
procedure for working on an electrical panel (if total de-energization was needed it
needed to be done so at the plant main motor control center). To remedy and alert plant
personnel or outside contractors, the area was covered with a clear lexan cover to prevent
accidently touching this area along with warning signage.
During high flows or some maintenance repairs, influent flow can be diverted to
equalization storage tanks. Once flows lower or repairs are complete, the stored water is
returned to the plant for treatment. Flow is diverted to these tanks with the use of a 12
inch (5 MOD) pump. Proper maintenance of the pump is critical. It has been rebuilt
once and is on an annual preventative maintenance contract to ensure reliability. The
pump is started monthly and quarterly pumping is done. The return of some of this water
when the time is right was done with a temporary awkward setup. This return is now set
up in a permanent more user friendly way.
In order to protect structures which in turn protects employees, regular painting is
required. This is an OSHA expectation as well. Approximately $40,000 was spent to
accomplish this protection.
-26-
The wastewater plant has a dedicated stormwater pump station strategically located in the
lowest area of the plant site. It is used only for removing rain water (melting snow) from
the plant site.
The influent pump station has a lot of water lines in it and they have 120 pounds of
pressure on them. If one of these lines failed it wouldn’t take long to flood the station
causing catastrophic failure of the pumping station. To help with this situation a float
alarm was added to the station and tied into the SCADA system. If a severe leak should
occur now an alarm will give enough notification to turn water off to the building before
major damage occurs.
The plant has seven remote eyewash stations located in areas of chemical use. The latest,
newer ones are tied into the SCADA system. Now the remaining ones have been added
to the SCADA system. This is important because if one of these eyewashes alarms it
could mean an employee could be in distress and in need of assistance.
The Fat, Oil, and Grease (FOG) program continues to be a useful tool for the prevention
of spills. A pretreatment technician oversees and implements the program. The
technician inspects restaurants to ensure grease trap maintenance. Best Management
Practices for the control of grease entrance into the collection system is also conveyed.
Part of the FOG program is public education. The technician is required to incorporate
all users of the collection system. This is accomplished through door hangers, bill
There are various pump station alarms throughout the plant. Some are equipped with
local visual lights and audible horns or sirens, and some are even equipped with remote
SCADA alarms. In an attempt to keep functioning alarms, they are tested on a monthly
basis. As more alarms are installed, they are added to the testing list.
Electrical arc flash is dangerous and can be a deadly situation around the plant site. It
occurs as energy sources are disconnected or reconnected. The District at the
recommendation of OSHA brought in a consulting firm to analyze the plant sites straight
line electrical supply through the plant. After the analyzation, signage was developed
and applied to all electrical components identifying various applications in regards to arc
flash. This was followed up by the consulting firm with training on the identifications as
well as overall arc flash. Also, proper PPE was identified for arc flash protection and
ordered to have on the plant site. From all this an electrical hazard policy was developed
and added in with the safety manual which contains all other District safety policies.
Identifying and eliminating inflow and infiltration (I&I) is an on-going and difficult task.
It is important to control I&I to take excess flows off of the treatment plant. However, it
is also important to address because excess I&I “dilutes” incoming waste. With diluted
wastewater it is more difficult to meet the percent removal requirements (85%) of the
plant’s permit. I&I also hydraulically over loads treatment processes making it harder to
meet permit limits. In addition to hydraulic overloads during these events, debris such as
sand and rock, which has built up in the collection system, gets flushed to the treatment
plant.
possible. It is also exercised monthly by the staff. And, curtailment program with the
main power supply company assures further testing and exercise of the generator.
The SCADA alarm system is an extremely valuable tool for preventing spills and other
problems. As problems arise or equipment fails, prompt attention is given to repairs so
the alarms are returned to service. To ensure the integrity of the SCADA system, it is on
a semi-annual preventative maintenance program.
Diesel fuel is used to run the generator. This typed of fuel can easily be contaminated.
To further ensure the reliability of the generator the fuel in the 1200 gallon storage tank is
run through a filter cleaning system on an annual basis.
-21 -
Each year during the budget process, close scrutiny is paid to the potential of deficiencies
which could lead to violations. Any identification of potential problems is addressed
during this process so that they are remedied before problems arise.
The Stormwater Pollution Prevention Plan (SPPP) is a valuable tool in identifying
deficiencies. It incorporates annual awareness and training to all plant personnel. It also
requires semi-annual inspections of all plant equipment and facilities, containment, and
tanks and chemical storage. The plan also addresses chemical suppliers and contractors
through training. The plan allows for scheduled identification of deficiencies before they
become problems.
inserts, poster distribution, advertisements, public service announcement and public
displays.
III.
NOTIFICATION
IV.
-96-
Reduce
Recycle
Satisfy
Develop
DateR. Danieley Brown, Pt
Chief Executive Officer
! __ \ >
A. 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 of the
named system and that those users have been notified of its availability.
A. A condensed, summarized version of this report will accompany the annual water report
which will be distributed to the users and customers of the Roanoke Rapids Sanitary
District via website posting. The full report will be available at the main office upon request.
CERTIFICATION