NC0026441_Historical information_20060503

Michael F. Easley, Governor
May 2, 2006
Dear Mr. Brower:
The NPDES Unit received your permit renewal application on May 2, 2006. A member of the
cc:
North Carolina Naturally
William G. Ross Jr., Secretary
North Carolina Department of Environment and Natural Resources
Phone[phone]
Fax [phone]
Alan W. Klimek, P.E. Director
Division of Water Quality
Subject: Receipt of permit renewal application
NPDES Permit NC0026441
Siler City WWTP
Chatham County
Frances Candelaria
NPDES Unit
Customer Service
1-877-623-6748
Mr. Joel J. Brower
Town Manager
Town of Siler City
PO Box 769
Wiler City, NC 27344-0769
CENTRAL FILES
Raleigh Regional Office/Surface Water Protection
NPDES Unit
Sincerely,
North Carolina Division of Water Quality
Internet: w\vw.ncwaterqualitv.org
An Equal Opportunity/Affirmative Action Employer - 50% Recycled/10% Post Consumer Paper
If you have any additional questions concerning renewal of the subject permits, please contact me at
[phone], extension 520.
^/Ill I IfJ
NPDES Unit will review your application. They will contact you if additional information is required to
complete your permit renewal. You should expect to receive a draft permit approximately 30-45 days before
your existing permit expires.
1617 Mail Service Center Raleigh, NC 27699-1617
Location: 512 N. Salisbury St. Raleigh, NC 27604
Michael F. Easley, Governor
June 7, 2006
Subject:
Dear Mr. Brower:
The following observations were made:
3. There is currently not enough standby power to operate the entire facility. The generator
can only operate the influent pump station, bar screen and grit removal processes, and in
situations of duress, partially treated wastewater might be discharged to Loves Creek.
The Town of Siler City should consider adding generator capacity to the facility to avoid
the problems associated with loss of power.
Raleigh Regional Office
3800 Barrett Drive
William G. Ross, Jr., Secretary
North Carolina Department of Environment and Natural Resources
Phone [phone]
FAX [phone]
Alan W. Klimek, P.E., Director
Division of Water Quality
North Carolina Division of Water Quality
Internet: h2o.enr.state.nc.us
Surface Water Protection
Raleigh, NC 27699-1628
An Equal Opportunity/Affirmative Action Employer - 50% Recycled/10% Post Consumer Paper
Mr. Joel Brower
Town Manager
Town of Siler City
311 North Second Street
Siler City, NC 27344
Compliance Evaluation Inspection
Town of Siler City WWTP
NPDES Permit Number NC0026441
Chatham County
On June 7, 2006 Mr. Christopher Wu of the Raleigh Regional Office conducted a compliance
evaluation inspection of the Town of Siler City wastewater treatment plant with the assistance of
Mr. Curtis Brown, ORC of the facility. His help was appreciated as it facilitated the inspection
process.
1. The Town of Siler City WWTP is permitted to discharge at a rate of 4 MGD and consists
of: manual and mechanical bar screens, grit collection unit, influent pump station, aerobic
digester, filter backwash holding station, DAT unit, 4 equalization basins, sludge transfer
station, lime tower, alum feed station, dual oxidation ditches, dual secondary clarifiers,
four tertiary filters, chlorine contact chamber, sulfur dioxide addition, and a solids
removal area. The facility discharges directly to Loves Creek, which is classified as
Class C waters.
fl?^DUC
One
NprthCarolina
_____ Naturally
Customer Service
1-877-623-6748
2. The Town of Siler City recently approved a 150,000 gpd flow increase in Gold Kist’s
(poultry industry) Industrial User Permit. Townsends, another poultry industry, will
likely be granted a similar flow increase. Meanwhile, Acme-McCrary, another industry,
ceased operations, thus reducing influent flow by 60,000 gpd. Such fluctuations will
leave the WWTP with approximately 20% remaining in flow capacity.
4.
Cc: Mr. Curtis Brown, Town of Siler City WWTP
Ken Pickle, DWQ - Stormwater Permitting
Jackie Nowell, DWQ - NPDES
Christopher Wu, RRO
Central Files
The overall conditions of the Town of Siler City WWTP are compliant with Division standards.
If you have any questions regarding the attached report or any of our findings, please contact
Christopher Wu at: [phone] (or email: [e-mail]).
6. Meritech Laboratories is contracted to test metals, MBAS, TN/TP, and chronic toxicity.
The rest of the parameters are analyzed on-site in the certified laboratory.
7. Mr. Brown is keeping all of the files and data in a well organized fashioned. Such order
eased the file review process.
There are two functional clarifiers at the facility. One of the clarifiers, however, was
drained on June 2, 2006 so that it could be sandblasted and re-coated. The clarifier will
likely be in operation soon.
8. An inspection of stormwater permit NCG110085 was also conducted during the site visit.
While the permit was issued in 2005, the Town contracted Hobbs, Upchurch &
Associates to conduct a facility study to determine if the WWTP qualified for a No­
Exposure Certification. The application for certification was received by the Division on
April 24, 2006.
In the past, the Raleigh Regional Office has turned down no-exposure certifications for
WWTPs that are rated at a flow capacity greater than 1 MOD. Regardless of topography
or layout, the potential for surface water contamination via incidental spills is heightened
by on-site structural maintenance, chemical storage, sludge storage, pumps station failure,
etc. The mere fact that sewage is exposed in open basins is reason enough to require that
a comprehensive stormwater plan be implemented to protect surface water quality.
5. Synagrow is responsible for pumping and hauling accumulated sludge, and land applies it
under permit WQ0016247.
Town of Siler City WWTP
NC0026441
Sincerely,
Christopher Wu
Environmental Specialist
Yes No NA NEOperations & Maintenance
■ Is the plant generally clean with acceptable housekeeping?

Comment:
Yes No NA NEPermit
■ o (If the present permit expires in 6 months or less). Has the permittee submitted a new application?
■ 0 o Is the facility as described in the permit?
O ■ 0 # Are there any special conditions for the permit?
■ o Is access to the plant site restricted to the general public?
■ □□□Is the inspector granted access to all areas for inspection?
There are no special conditions in the permit.Comment:
Yes No NA NERecord Keeping
■ Are records kept and maintained as required by the permit?
■ oIs all required information readily available, complete and current?
■ o o Are all records maintained for 3 years (lab. reg. required 5 years)?
■ □00Are analytical results consistent with data reported on DMRs?
■ O O 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
■ nonAre DMRs complete: do they include all permit parameters?
0 n ■ oHas the facility submitted its annual compliance report to users and DWQ?
■ 000(If the facility is = or > 5 MGD permitted flow) Do they operate 24/7 with a certified operator on each shift?
■ Is the ORC visitation log available and current?
■ □00Is the ORC certified at grade equal to or higher than the facility classification?
■ 0 0Is the backup operator certified at one grade less or greater than the facility classification?
■ 0 0Is a copy of the current NPDES permit available on site?
Page #3
Does the facility analyze process control parameters, for ex: MLSS, MCRT, Settleable Solids, pH, DO, Sludge ■ O
Judge, and other that are applicable?
Owner - Facility: Siler City WWTP
Inspection Type: Compliance Evaluation
Permit: NC0026441
Inspection Date: 06/07/2006
Record Keeping Yes No NA NE
0 0 ■ Facility has copy of previous year's Annual Report on file for review?
Comment:
Flow Measurement - Influent Yes No NA NE
■ # Is flow meter used for reporting?
■ 0 0 0Is flow meter calibrated annually?
■ o o Is the flow meter operational?
0 ■(If units are separated) Does the chart recorder match the flow meter?
Comment:
Flow Measurement - Effluent Yes No NA NE
O ■ 0 O# Is flow meter used for reporting?
■ □00Is flow meter calibrated annually?
■ ODOIs the flow meter operational?
o o o ■(If units are separated) Does the chart recorder match the flow meter?
Comment: The influent meter is used for reporting flow.
Aerobic Digester Yes No NA NE
■ □onIs the capacity adequate?
■ 000Is the mixing adequate?
■ nonIs the site free of excessive foaming in the tank?
■ 000# Is the odor acceptable?
■ 000# Is tankage available for properly waste sludge?
Comment:
Pump Station - Influent Yes No NA NE
0 O 0 ■Is the pump wet well free of bypass lines or structures?
0 0 0 ■Is the wet well free of excessive grease?
■ nonAre all pumps present?
■ ODDAre all pumps operable?
0 n o ■Are float controls operable?
■ DOOIs SCADA telemetry available and operational?
■ DOOIs audible and visual alarm available and operational?
Comment:
Page #4
Permit: NC0026441
Inspection Date: 06/07/2006
Owner - Facility: Siler City WWTP
Inspection Type: Compliance Evaluation
Permit: NC0026441
Inspection Date: 06/07/2006
Yes No NA NEBar Screens
Type of bar screen
a.Manual
b.Mechanical
■ o o Are the bars adequately screening debris?
■ Is the screen free of excessive debris?
■ Is disposal of screening in compliance?
■ ODDIs the unit in good condition?
Comment:
Yes No NA NEGrit Removal
Type of grit removal
oa.Manual
b.Mechanical
■ oIs the grit free of excessive organic matter?
■ o Is the grit free of excessive odor?
■ o# Is disposal of grit in compliance?
Comment:
Yes No NA NESecondary Clarifier
■ □00Is the clarifier free of black and odorous wastewater?
■ 000Is the site free of excessive buildup of solids in center well of circular clarifier?
■ OODAre weirs level?
■ nooIs the site free of weir blockage?
■ 000Is the site free of evidence of short-circuiting?
■ nnnIs scum removal adequate?
■ ODOIs the site free of excessive floating sludge?
■ 000Is the drive unit operational?
■ 000Is the return rate acceptable (low turbulence)?
■ 000Is the overflow clear of excessive solids/pin floc?
■ 000Is the sludge blanket level acceptable? (Approximately % of the sidewall depth)
Comment:
Yes No NA NEDisinfection-Gas
Page #5
Owner - Facility: Siler City WWTP
Inspection Type: Compliance Evaluation
Permit: NC0026441
Inspection Date: 06/07/2006
Yes No NA NEDisinfection-Gas
■ 0Are cylinders secured adequately?
■ 0 0Are cylinders protected from direct sunlight?
■ ODOIs there adequate reserve supply of disinfectant?
■ Is the level of chlorine residual acceptable?
■ o Is the contact chamber free of growth, or sludge buildup?
■ oIs there chlorine residual prior to de-chlorination?
Comment:
Yes No NA NEOxidation Ditches
■ O Are the aerators operational?
■ o Are the aerators free of excessive solids build up?
■ ODO# Is the foam the proper color for the treatment process?
■ o Does the foam cover less than 25% of the basin’s surface?
■ oIs the DO level acceptable?
■Are settleometer results acceptable (> 30 minutes)?
■ oIs the DO level acceptable?(1.0 to 3.0 mg/l)
■Are settelometer results acceptable?(400 to 800 ml/l in 30 minutes)
Comment:
Yes No NA NEDe-chlorination
GasType of system ?
■ □□□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?
Comment:
■ Are the tablets the proper size and type?
■ Are tablet de-chlorinators operational?
Number of tubes in use?
Comment:
Yes No NA NEStandby Power
■ Is automatically activated standby power available?
■ Is the generator tested by interrupting primary power source?
Page #6
Owner - Facility: Siler City WWTP
Inspection Type: Compliance Evaluation
(
Yes No NA NEStandbyJPower
■ Is the generator tested under load?
o ■Was generator tested & operational during the inspection?
■ Do the generator(s) have adequate capacity to operate the entire wastewater site?
■ o Is there an emergency agreement with a fuel vendor for extended run on back-up power?
■ 0
Yes No NA NESand Filters (Low rate)
■ o (If pumps are used) Is an audible and visible alarm Present and operational?
■ □00Is the distribution box level and watertight?
0 O ■ 0Is sand filter free of ponding?
0 o ■ oIs the sand filter effluent re-circulated at a valid ratio?
■ non# Is the sand filter surface free of algae or excessive vegetation?
OObO# Is the sand filter effluent re-circulated at a valid ratio? (Approximately 3 to 1)
Comment:
Yes No NA NELaboratory
■ 000Are field parameters performed by certified personnel or laboratory?
■ 000Are all other parameters(excluding field parameters) performed by a certified lab?
■ non# Is the facility using a contract lab?
■ ODDIs proper temperature set for sample storage (kept at 1.0 to 4.4 degrees Celsius)?
■ 000Incubator (Fecal Coliform) set to 44.5 degrees Celsius*/- 0.2 degrees?
■ □00Incubator (BOD) set to 20.0 degrees Celsius +/-1.0 degrees?
Meritech Laboratories is used to conduct various tests.Comment:
Yes No NA NEInfluent Sampling
■ 000# Is composite sampling flow proportional?
■ nnoIs sample collected above side streams?
■ 000Is proper volume collected?
■ oddIs the tubing clean?
■ 000Is proper temperature set for sample storage (kept at 1.0 to 4.4 degrees Celsius)?
■ nnnIs sampling performed according to the permit?
Page #7
Is the generator fuel level monitored?
Comment: Standby power is manually operated. It only has the capability of running
the influent pump station.
Owner - Facility: Siler City WWTP
Inspection Type: Compliance Evaluation
Permit: NC0026441
Inspection Date: 06/07/2006
. f
Yes No NA NEInfluent Sampling
Comment:
Yes No NA NEEffluent Sampling
■ Is composite sampling flow proportional?
■ Is sample collected below all treatment units?
■ 0 Is proper volume collected?
■ o oIs the tubing clean?
■ 0 Is proper temperature set for sample storage (kept at 1.0 to 4.4 degrees Celsius)?
■ Is the facility sampling performed as required by the permit (frequency, sampling type representative)?
Comment:
Page #8
Owner ■ Facility: Siler City WWTP
inspection Type: Compliance Evaluation
Permit: NC0026441
Inspection Date: 06/07/2006
I
Michael F. Easley, Governor
July 20, 2006
Dear Permittee:
Sincerely,
cc:
An Equal Opportunity/Affirmative Action Employer - 50% Recycled/10% Post Consumer Paper
The Division tracks average flows on a calendar-year basis for all permitted facilities. Those
approaching 80 % of the design hydraulic load of the treatment system are encouraged to start the
planning process to address the increasing flows.
The average flow for calendar year 2005 at your facility was 67% of the hydraulic permitted flow.
Please review this document and consider its applicability to your particular treatment system.
If you need more detailed information or assistance identifying the steps needed to address an
expansion, please contact the NPDES or Planning Units at [phone].
1617 Mail Service Center, Raleigh, North Carolina 27699-1617
512 North Salisbury Street, Raleigh, North Carolina 27604
Phone: [phone] FAX [phone] / Internet: h2o.enr.state.nc.us
Subject: Guidance Document for WWTP Expansions
Siler City WWTP
Chatham County
Matt Matthews
Point Source Branch
William G. Ross, Jr., Secretary
Alan W. Klimek, P.E., Director
Joel J. Brower
Town of Siler City
P.O. Box 769
Siler City, NC27344
Central Files
Raleigh Regional Office / Surface Water Protection
NPDES file
Recognizing that many local governments face the need of planning for expansions of wastewater
treatment plants, the Division has developed the enclosed guidance document. The purpose of this
document is to assist local governments in the planning process by summarizing the steps needed
to obtain all the permits necessary for an expansion.
^One, _NorthCarolina Naturally
NCDENR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
a.
3.
a.
c.
e.
Stream Classification:a.
b.
c.
USGS Quadrangle Map name and number OK on Application O,
OK on Existing Permit EJ, or provide USGS Quadrangle Map name and number:
River Basin and Sub basin No.:
Describe receiving stream features and downstream uses:
County: Chatham
Permitee: Town of Siler City
Application/ Permit No.: NC0026441
Staff Report Prepared By: Christopher Wu
Date: June 7, 2006
To: NPDES Discharge Permitting Unit
Attn. NPDES Reviewer: Nowell
For NEW FACILITIES Proceed to Section C, Evaluation and Recommendations
(For renewals or modifications continue to section B)
b. Driving Directions OK on Application Q,
OK on Existing Permit Q, or provide Driving Directions (please be accurate):
Receiving Stream OK on Application Q,
OK on Existing Permit Q, or provide Receiving Stream or affected waters:
NPDES REGIONAL WATER QUALITY
STAFF REPORT AND RECOMMENDATIONS
(This form is best filled out on computer, rather than hard copy)
Project Name: Town of Siler City WWTP
SOC Priority Project? (Y/N) N If Yes, SOC No.
Keeping BIMS Accurate: Is the following BIMS information (a. through e. below) correct?
KI Yes or Q No. If No, please either indicate that it is correct on the current application or the
existing permit or provide the details. If none can be supplied, please explain:
Discharge Point: (Fill this section only if BIMS or Application Info is incorrect or missing)
(If there is more than one discharge pipe, put the others on the last page of this form.)
Location OK on Application □,
OK on Existing Permit EJ, or provide Location:
A. GENERAL IN FORMA TION
1. This application is (check all that apply): EJ New K Renewal
EJ Modification
2. Was a site visit conducted in order to prepare this report? K Yes or EE No.
Date of site visit: June 7, 2006
b. Person contacted and telephone number: Curtis Brown; [phone]
c. Site visit conducted by: Christopher Wu
d. Inspection Report Attached: K Yes or EE No.
d. Latitude/Longitude OK on Application EE, (check at hnp://www.topozone.com These are often
inaccurate) OK on Existing Permit EE, or provide Latitude: Longitude:
B. DESCRIPTION OF FACILITIES AND WASTE(S) (renewals and modifications only)
1.
4.or
C EVALUATION AND RECOMMENDATIONS
Other Disposal Options: N/A
FORM: NPDES-RRO 06/03, 9/03 2
1. Alternative Analysis Evaluation: has the facility evaluated the non-discharge options available? Give
regional perspective for each option evaluated:
Spray Irrigation: N/A
Connect to Regional Sewer System: N/A
Subsurface: N/A
NPDES REGIONAL WATER QUALITY
STAFF REPORT AND RECOMMENDATIONS
Describe the existing treatment facility: The Town of Siler City WWTP is permitted to discharge at a
rate of 4 MGD and consists of: manual and mechanical bar screens, grit collection unit, influent pump
station, aerobic digester, filter backwash holding station, DAT unit, 4 equalization basins, sludge
transfer station, lime tower, alum feed station, dual oxidation ditches, dual secondary clarifiers, four
tertiary filters, chlorine contact chamber, sulfur dioxide addition, and a solids removal area.
2. Are there appropriately certified ORCs for the facilities? M Yes or Q No.
Operator in Charge: Curtis Brown Certificate # (Available in BIMS or Certification Website)
Back- Operator in Charge: David Hicks Certificate #
3. Does the facility have operational or compliance problems? Please comment: No.
Summarize your BIMS review of monitoring data (Notice(s) of violation within the last permit cycle;
Current enforcement action(s)): None.
Are they currently under SOC, Q Currently under JOC, Q Currently under moratorium Q? Have
all compliance dates/conditions in the existing permit, SOC, JOC, etc. been complied with? | | Yes
or No. If no, please explain:
Residuals Treatment: PSRP (Process to Significantly Reduce Pathogens, Class B)
PFRP O (Process to Further Reduce Pathogens, Class A)?
Are they liquid or dewatered to a cake?
Land Applied? Yes [X] No Q If so, list Non-Discharge Permit No. WQ0016247
Contractor Used: Synagro
Landfilled? Yes I I No^ If yes, where?
Other?
Adequate Digester Capacity? Yes No Q Sludge Storage Capacity? Yes [X] No | |
Please comment on current operational practices:
5. Are there any issues related to compliance/enforcement that should be resolved before issuing this
permit? Q Yes or No. If yes, please explain:
Provide any additional narrative regarding your review of the application:2.
3.
Reason
Reason
5.
Recommended Addition
6.
Reminder: attach inspection report if Yes
1. Signature of report preparer:
Date:
3FORM: NPDES-RRO 06/03, 9/03
a
Recommendation: Hold, pending receipt and review of additional information by regional office;
Hold, pending review and approval of required additional information by NPDES permitting
office; Issue; Q Deny. If deny, please state reasons:
NPDES REGIONAL WATER QUALITY
STAFF REPORT AND RECOMMENDATIONS
Signature of WQS regional supervisor:
List specific special requirements or compliance schedules that you recommend to be included in
the permit when issued. Make sure that you provide a reason for each special condition:
Reason
List any items that you would like NPDES Unit to obtain through an additional information
request. Make sure that you provide a reason for each item:
Recommended Additional Information
was checked for 2 d.
4. List specific Permit requirements that you recommend to be removed from the permit when
issued. Make sure that you provide a reason for each condition:
Recommended Removal
1
August 25, 2006
Dear Mr. Brower:
Sincerely,
SEP - I 2006for
N. C. Division of Water Quality 1617 Mail Service Center Raleigh, North Carolina 27699-1617 [phone]
Based on an inspection of your facility, Raleigh Regional Office staff found that materials on your site either
are exposed, or have the potential to be exposed. DWQ cannot grant your requested exemption from permit
coverage when materials are exposed or have the potential to be exposed.
cc: Raleigh Regional Office
Stormwater Permitting Unit Files
Subject: Denial of No Exposure Certification
Town of Siler City Wastewater Treatment Plant
370 Waste Treatment Road, Siler City, NC
Chatham County
The Division has reviewed your submittal of the No Exposure Certification for Exclusion from NPDES
Stormwater Permitting form, which we received on June 26, 2006. The Division is unable to concur with your
certification of no exposure.
Central Files - w/attachments
NCG110085 file
Michael F. Easley, Governor
William G. Ross Jr., Secretary
North Carolina Department of Environment and Natural Resources
Alan W. Klimek, P. E. Director
Division of Water Quality
Coleen H. Sullins, Deputy Director
Division of Water Quality
ORIGINAL SIGNED BY
KEN PICKLE
Alan W. Klimek, P.E.
nCDEsr
Customer Service
1-877-623-6748
Mr. Joel J. Brower
Town of Siler City
311 N. 2nd Avenue
Siler City, NC 27344-0769
It is important to maintain your current stormwater discharge permit, NCG110085. If you have any questions
or need further information, please contact Sarah Young at [phone], ext. 502, or through email at
[e-mail]
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Force Main
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Parcels
SILER CITY WWTP
4.0 MGD CAPACITY
TOWN OF SILER CITY
SEWER SYSTEM
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