NC0026441_Historical information_20121231

5/9/11Report Date:
4/20/11Date Sample Rcvd:
4/10-11/11Sample: Plant Effluent Composite04201131Meritech Work Order #
MethodReporting LimitAnalysis DateResultParameters
4/17-18/11Sample: Plant Effluent Composite04201132Meritech Work Order #
MethodReporting LimitAnalysis DateResultParameters
I hereby certify that I have reviewed and approve these data.
Contact:
Client:
Ms. Ann Clark
Town of Siler City
P.O. Box 769
Siler City, NC 27344
1.07 mg/L
15.8 mg/L
16.9 mg/L
0.045 mg/L
5/6/11
4/21/11
5/6/11
4/27/11
4/27/11
5/6/11
4/21/11
5/6/11
4/28/11
4/28/11
4/28/11
0.20 mg/L
0.10 mg/L
0.20 mg/L
0.020 mg/L
0.1 mg/L
0.20 mg/L
0.10 mg/L
0.20 mg/L
0.002 mg/L
0.020 mg/L
0.010 mg/L
EPA 351.1
EPA 353.2
EPA 353.2
EPA 200.7
EPA 325.3
EPA 351.1
EPA 353.2
EPA 353.2
EPA 200.7
EPA 200.7
EPA 200.7
TKN
Nitrate/Nitrite, Nitrogen
Nitrogen, total
Phosphorous, total
Chloride
TKN
Nitrate/Nitrite, Nitrogen
Nitrogen, total
Copper, total
Phosphorous, total
Zinc, total
642 Tamco Road, Reidsville, North Carolina 27320
tel.[phone] fax.[phone]
Meritech, Inc.
Environmental Laboratory
Laboratory Certification No. 165
Laboratory Representative
164 mg/L
0.85 mg/L
11.2 mg/L
12.1 mg/L
< 0.002 mg/L
0.078 mg/L
0.024 mg/L
3/13/12Date Sample Rcvd:
3/12-13/12Sample: Plant Effluent Composite03131245Meritech Work Order #
MethodReporting LimitAnalysis DateResultParameters
3/1/12Sample: Brookwood Grab03131246Meritech Work Order #
MethodReporting LimitResultParameters
EPA 1664A5 mg/L3/14/12Oil & Grease (HEM)
I hereby certify that I have reviewed and approve these data.
Report Date:
Revision Date:Contact:
Client:
Ms. Ann Clark
Town of Siler City
P.O. Box 769
Siler City, NC 27344
EPA 325.3
EPA 351.1
EPA 353.2
EPA 353.2
EPA 200.8
EPA 200.8
EPA 200.8
EPA 200.8
EPA 200.8
EPA 200.8
EPA 200.8
EPA 200.8
EPA 200.8
EPA 200.8
3/26/12
4/13/12
0.1 mg/L
0.20 mg/L
0.10 mg/L
0.20 mg/L
0.002 mg/L
0.00015 mg/L
0.002 mg/L
0.002 mg/L
0.0005 mg/L
0.002 mg/L
0.0005 mg/L
0.020 mg/L
0.002 mg/L
0.005 mg/L
Chloride
TKN
Nitrate/Nitrite, Nitrogen
Nitrogen, total
Arsenic, total
Cadmium, total
Chromium, total
Copper, total
Lead, total
Molybdenum, total
Nickel, total
Phosphorous, total
Selenium, total
Zinc, total
3/13/12
3/19/12
3/13/12
3/21/12
3/23/12
3/23/12
3/23/12
3/23/12
3/23/12
3/23/12
3/23/12
3/26/12
3/23/12
3/23/12
642 Tamco Road, Reidsville, North Carolina 27320
tel.[phone] fax.[phone]
______
Laboratory Representative
< 5 mg/L
42.1 mg/L
< 0.20 mg/L
11.1 mg/L
11.1 mg/L
< 0.002 mg/L
< 0.00015 mg/L
< 0.002 mg/L
0.004 mg/L
< 0.0005 mg/L
< 0.002 mg/L
0.003 mg/L.
0.029 mg/L
< 0.002 mg/L
0.017 mg/L
Meritech, Inc. a
Environmental Laboratoty
Laboratory Certification No. 165
Analysis Date
3/13/12Date Sample Rcvd:
3/4-5/12Sample: Plant Effluent Composite03131243Meritech Work Order #
MethodReporting LimitAnalysis DateResultParameters
3/12-13/12Sample: Plant Influent Composite03131244Meritech Work Order #
MethodReporting LimitAnalysis DateResultParameters
Contact:
Client:
Ms. Ann Clark
Town of Siler City
P.O. Box 769
Siler City, NC 27344
0.61 mg/L
5.48 mg/L
6.09 mg/L
0.026 mg/L
3/19/12
3/13/12
3/21/12
3/26/12
3/13/12
3/19/12
3/13/12
3/21/12
3/23/12
3/23/12
3/23/12
3/23/12
3/23/12
3/26/12
3/23/12
3/23/12
3/26/12
3/23/12
3/23/12
Report Date:
Revision Date:
0.20 mg/L
0.10 mg/L
0.20 mg/L
0.020 mg/L
3/26/12
4/13/12
EPA 351.1
EPA 353.2
EPA 353.2
EPA 200.8
EPA 325.3
EPA 351.1
EPA 353.2
EPA 353.2
EPA 200.8
EPA 200.8
EPA 200.8
EPA 200.8
EPA 200.8
EPA 245.1
EPA 200.8
EPA 200.8
EPA 200.8
EPA 200.8
EPA 200.8
TKN
Nitrate/Nitrite, Nitrogen
Nitrogen, total
Phosphorous, total
Chloride
TKN
Nitrate/Nitrite, Nitrogen
Nitrogen, total
Arsenic, total
Cadmium, total
Chromium, total
Copper, total
Lead, total
Mercury, total
Molybdenum, total
Nickel, total
Phosphorous, total
Selenium, total
Zinc, total
Meritech, Inc.
Environmental Laboratory
Laboratory Certification No. 165
642 Tamco Road, Reidsville, North Carolina 27320
tel.[phone] fax.[phone]
0.1 mg/L
0.20 mg/L
0.10 mg/L
0.20 mg/L
0.002 mg/L
0.00015 mg/L
0.002 mg/L
0.002 mg/L
0.0005 mg/L
0.0002 mg/L
0.002 mg/L
0.0005 mg/L
0.020 mg/L
0.002 mg/L
0.005 mg/L
44.2 mg/L
37.5 mg/L
< 0.10 mg/L
37.5 mg/L
< 0.002 mg/L
0.001 mg/L
0.010 mg/L
0.162 mg/L
0.010 mg/L
0.0015 mg/L
0.004 mg/L
0.011 mg/L
9.01 mg/L
< 0.002 mg/L
0.647 mg/L
4/9/12Report Date:
3/28/12Date Sample Rcvd:
3/18-19/12Sample: Plant Effluent Composite032812109Meritech Work Order #
MethodReporting LimitAnalysis DateResultParameters
3/25-26/12Sample: Plant Effluent Composite032812110Meritech Work Order #
MethodReporting LimitAnalysis DateResultParameters
I hereby certify that I have reviewed and approve these data.
Contact:
Client:
36.2 mg/L
0.78 mg/L
3.25 mg/L
4.03 mg/L
0.003 mg/L
0.021 mg/L
0.006 mg/L
4/1/12
4/3/12
4/3/12
4/6/12
4/2/12
4/1/12
4/3/12
4/3/12
4/4/12
4/6/12
4/4/12
0.20 mg/L
0.10 mg/L
0.20 mg/L
0.020 mg/L
EPA 351.1
EPA 353.2
EPA 353.2
EPA 200.8
EPA 325.3
EPA 351.1
EPA 353.2
EPA 353.2
EPA 200.8
EPA 200.8
EPA 200.8
Ms. Ann Clark
Town of Siler City
P.O. Box 769
Siler City, NC 27344
TKN
Nitrate/Nitrite, Nitrogen
Nitrogen, total
Phosphorous, total
Chloride
TKN
Nitrate/Nitrite, Nitrogen
Nitrogen, total
Copper, total
Phosphorous, total
Zinc, total
642 Tamco Road, Reidsville, North Carolina 27320
tel.[phone] fax.[phone]
Meritech, Inc. A
Environmental Laboratory
Laboratory Certification No. 165
0.1 mg/L
0.20 mg/L
0.10 mg/L
0.20 mg/L
0.002 mg/L
0.020 mg/L
0.005 mg/L
t,
Laboratory Representative
0.36 mg/L
12.1 mg/L
12.5 mg/L
< 0.020 mg/L
&
Chain of Custody Record (COC)NPDES#
Phone:
LO-vNClient:!Fax:
Email:
Address:
std(io days)
Attention:
END Tests Required 200.8 / 200.7
TimeTimeDate
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Compositor #
Comments:
Jug #
On Ice? Temperature On Receipt
Date Time
Fed Ex
Time)7
TimeDateDate
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Sample
Location/ID #
642 Tamco Rd.
Reidsville, NC 27320
# of
Conts.
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Method of Shipment:
UPS
Date
F iA>-j t* L ~l7l L' f'T
i
N. p
Person Taking Sample (Signature):
Comp?
Grab?
/ f ry l! f
3- 11.-12.
Date
mg/L Q
Date
Report results in
mg/Kg
Time
gg/L
Received by
24 - 48 Hr
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Lab Use
Only
pH OK?
C12OK?
Relinquished by
!/.<c
L .A/ju.iF
37 f)
—Err
!- I'
Aji - t I
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J': '( f , AV, ■
Project #
P. O. #
Turn Around Time*
*RUSH work must have prior approval.
3 - 5 Day
I I
Required
Method
‘ • _>
■ z| \/l 4 ■—wl JL^—MhLm—
***Dechlorination:(<0.5 ppm) of Ammonia, Cyanide, Phenol or TKN samples must be done in the field prior to preservation.***
L h i • <41.
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Time
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MERITECJJ, INC.
ENVIRONMENTAL LASpRATORIES
A Division of Water fec/iniD^y and Controls, inc. ~
PMonfcr 1-036-342-4748
Fax: [phone]
Email: [e-mail]
Web Site: www.meritech-labs.cem
Sampltag. Dates & Times
START
Date
45
I
I C'i/ i i
/:L;
Time
Z
iT’.;
Received by z ,
Received at lab by j
Cl J1W i Df j>
£. r
Hand Delivery
I-j Other
Are these results for regulatory purposes?
_________YES NO
Relinquished b^ . ,4 i
Relinquished by
( -Z zt, ,.
i
■ r'T/rA > r Pb th
1 ‘■'' .)
< 2-
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Regional Field Inspectors Check List for Field Parameters
Name of site to be Inspected:Date:
Region:
A.Does the facility have the equipment necessary to analyze field parameters as circled above?
1.A pH meter Yes No
2.A Residual Chlorine meter Yes No
3.DO meter Yes No
4.A Cone for settleable solids Yes No
5.A thermometer or meter that measures temperature.Noes
/u/46.Conductivity meter Yes No
III. Calibration/Analysis:
Yes No
Yes No
Yes No
Yes,No
Yes No
Yes No
6. For Conductivity, is a calibration standard
analyzed each day of use?
5. Is the temperature measuring device calibrated
annually against a certified thermometer?
4. For Settleable Solids, is 1 liter of sample
settled for 1 hour?
2. For Total Residual Chlorine, is a check standard
analyzed each day of use?
1. Is the pH meter calibrated with 2 buffers and
checked with a third buffer each day of use?
3. Is the air calibration of the DO meter performed
each day of use?
/u i:J vy
/ /t/^ -
I. Circle the parameter or parameters performed at this site,
^idual^^^.^ettleabl^^^pri^^, Conductivity^/femperature
II. Instrumentation:
, uS£:
Field certification # (if applicable):
NPDES #: NCOO
Date: 4
lAJuvTP /) z - l
___________ Inspector: /y-.
IV. Documentation:
1. Is the date and time that the sample was collected documented Yes No
2. Is the sample site documented?Yes No
3. Is the sample collector documented?Yes,No
4. Is the analysis date and time documented?Yes No
Yes5. Did the analyst sign the documentation?No
6. Is record of calibration documented?Yes No
No
Yes No
Comments:
I '/ (L
Please submit a copy of this completed form to the Laboratory Certification Program.
FIELD INSPECTOR CHECKLIST REV 04/23/2002
^0(0
DWQ Lab Certification
Chemistry Lab
Courier # 52-01-01
8. For Temperature, is the annual calibration of
the measuring device documented?
7. For Settleable Solids, is sample volume and
1 hour time settling time documented?
4^7
\aJA5 i/[
fZ-iCO /j/4 ( °.s T TA-e
Subject:
Cc:
Page 2-1
Mr. Joel Brower
Town Manager, Siler City
311 N. Second Avenue
Siler City, NC 27344
Beverly Eaves Perdue
Governor
September 28, 2012
Dee Freeman
Secretary
NPDES Compliance Inspection Report
Siler City WWTP
NPDES Permit No. NC0026441
NPDES Permit No. NCG110085
Chatham County
Sincerely,
Aiitumn Romanski
Environmental Program Consultant
Attachments
Mr. Chris McCorquodale
311 N. Second Avenue
Siler City, NC 27344
me at 919-791-4255 in the Raleigh
NCDENR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Charles Wakild, P.E.
Director
Dear Mr. Brower:
The North Carolina Division of Water Quality conducted an inspection of the Siler City Wastewater
Treatment Plant on June 14, 2012. This inspection was conducted to verify that the facility is
operating in compliance with the conditions and limitations specified in NPDES Permits.
A summary of the findings and comments noted during this inspection is provided on the attached
copy of the complete inspection report entitled "Water Compliance Inspection Report”. The ORC
Chris McCorquodale keeps excellent records as evidenced by his ability to accommodate inspector
requests for ORC log, DMR s, and Lab Bench data. Further the lab records and lab methods w'ere
provided and the assistance of both the ORC and Lab staff during the inspection was greatly
appreciated.
There were no significant findings except that of a maintenance item under the Equalization
Basin/Aerobic Digester section of this report. Please respond in writing to this maintenance item
within 30 days of receipt of this report.
If you have any questions concerning this report, please contact
Regional Office.
Compliance Status:
Compliant O Non-compliant O Neither
Name and Signature of Inspectors:
Page 2-2
Autumn Romanski
Surface Water Protection Section
Raleigh Regional Office
Raleigh Regional Office - File
DWQ/Raleigh - Central Files
DWQ/Raleigh-Julie Gryzb-NPDES Complex Permitting Unit
Date
EPA
yr/mo/dayNPDES
12lNC0026441 12/06/14
I I I I I66
Entry Time/Date Permit Effective Date
10/04/0109:00 AM 12/06/14
Exit Time/Date Permit Expiration Date
Siler City NC 27344 11/10/3102:00 PM 12/06/14
Other Facility Data
Christopher Michael McCorquodale/ORC/919-742-4581/
Name. Address of Responsible Official/Title/Phone and Fax Number
Joel J Brower,311 N Second Ave Siler City NC 27344//919-742-2323/
Operations & Maintenance Records/Reports
Sludge Handling Disposal Compliance Schedules
(See attachment summary)
Name(s) and Signature(s) of Inspector(s)Agency/Office/Phone and Fax Numbers Date
Autumn H Romanski RRO WQ//919-791-4247/
/
Page #1
3I
United States Environmental Protection Agency
Washington, D.C. 20460
Facility Site Review
Storm Water
Contacted
No
QA
72N
Siler City WWTP
NCSR 1363 US Hwy 64
Form Approved.
OMB No. 2040-0057
Approval expires 8-31-98
Name(s) of Onsite Representative(s)/Titles(s)/Phone and Fax Number(s)
///
Fac Type
201 J
Facility Self-Monitoring Evaluation Rating
7°L|
Inspection Type
18[c]
Section C: Areas Evaluated During Inspection (Check only those areas evaluated)
■ Flow Measurement
Section B: Facility Data
Name and Location of Facility Inspected (For Industrial Users discharging to POTW, also include
POTW name and NPDES permit Number)
J11
77/771
"‘>6^3
J17
Inspector
19l£j
Inspection Work Days
671| 69
Transaction Code
’ [nJ 2 |_sj
—Reserved------------------------
75| I I I I I I I 80
B171 u 73LU74
Permit
fl Self-Monitoring Program
Effluent/Receiving Waters Laboratory
Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary)
Water Compliance Inspection Report
Section A: National Data System Coding (i.e., PCS)
Remarks
21| | 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
Signature of Management Q A Reviewer —s y / , Agency/Office/Phone and Fax Numbers Date ,
EPA Form 3566-3 (Rev 9-94) Previous editions are obsolete.
(cont.)1NPDESyr/mo/day
J17NC002644112/06/14
The permittee was in compliance with permit requirements the day of the inspection.
Page #2
4b has been isolated to mitigate risk of failure due to major cracks and rusted rebar. The permit requires
treatment units to be maintained and it is recommended that the facility repair this zone such that the
treatment would be ready for use (if and when needed). *Please respond to DWQ as to your schedule for
the repair of this treatment unit. The DAF unit should also be maintained and used as needed/appropriate
for treatment.
Discussed with the ORC - DWQ understands that the WWTP was not designed as a BNR plant, but
anything that could be done operational or within limited investment to reduce Total Nitrogen would be
beneficial to the environment and may need to be considered to meet future permit requirements as stated
in the permit section of this inspection report.
Nutrient Reduction continues to be an environmental goal, as nutrient loading to Loves Creek/Rocky River
is of concern to the public.
However it is noted adjustments to operation of units as described by the current permit (Supplement to
Permit Cover Sheet)were made to adjust to loss of 1 MOD flow.(SEE COMMENT BELOW)
12l3lJ11
Inspection Type
IS, . lol
Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary)
Permit Yes No NA NE
■ (If the present permit expires in 6 months or less). Has the permittee submitted a new application?
■ Is the facility as described in the permit?
■ # Are there any special conditions for the permit?
■ o Is access to the plant site restricted to the general public?
■ o Is the inspector granted access to all areas for inspection?
Compliance Schedules Yes No NA NE
■ OIs there a compliance schedule for this facility?
0 ■ oIs the facility compliant with the permit and conditions for the review period?
Comment:
Operations & Maintenance Yes No NA NE
■ Is the plant generally clean with acceptable housekeeping?
Yes No NA NEPump Station - Influent
Page #3
Owner - Facility: Siler City WWTP
Inspection Type: Compliance Evaluation
Permit: NC0026441
Inspection Date: 06/14/2012
Sampling data dated March 2012 at inspection and DMRs review showed Total
Nitrogen ranges and Nitrate-Nitrite ranges have dropped since loss of Townsend flow.
Note: The facility was not designed for Biological Nutrient Reduction. However, it
appeared that with the current capacity at the plant, some piping and operational
changes could be made at the plant to address Biological Nutrient Reduction. This may
be needed in order to comply with future permits.
The facility does still accept wastewater from Brookwood Farms BBQ, data also shows
this wastewater contributes to nutrient loading to the plant.
The facility has lost all flow from SIU-Townsend, which data had shown to be a
significant source of nutrient loading to the plant.
Comment: BIMs shows the permit in expired status. The facility has provided
application for renewal as required.
Comment: The ORC has had a challenging position with the changes that occur along
with the loss of 1 MOD flow.
The overall facility capacity (10 MOD) is much larger than the max permitted flow (4
MOD) and the current actual flow. It can be a challenge to operate in this situation, but
the ORC appears knowledgable, proactive and conscientious of plant operations.
Does the facility analyze process control parameters, for ex: MLSS, MCRT. Settleable Solids. pH, DO. Sludge ■ O D D
Judge, and other that are applicable?
Permit: NC0026441
Inspection Date: 06/14/2012
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?
■ oAre all pumps present?
■ oAre all pumps operable?
■ □00Are float controls operable?
■ ODDIs SCADA telemetry available and operational?
■ 000Is audible and visual alarm available and operational?
Pump Station - Effluent Yes No NA NE
D O ■ Is the pump wet well free of bypass lines or structures?
D O ■ Are all pumps present?
D ■ 0Are all pumps operable?
O D ■ Are float controls operable?
■□Is SCADA telemetry available and operational?
0 ■ Is audible and visual alarm available and operational?
Comment: Flow by gravity
Flow Measurement - Influent Yes No NA NE
■ 000# Is flow meter used for reporting?
■ 000Is flow meter calibrated annually?
■ 0 n Is the flow meter operational?
■ 000(If units are separated) Does the chart recorder match the flow meter?
Comment:
Yes No NA NE
0 0 ■ 0# Is flow meter used for reporting?
0 ■ Is flow meter calibrated annually?
0 ■ oIs the flow meter operational?
o 0 ■ n(If units are separated) Does the chart recorder match the flow meter?
Page #4
New Siemens ultrasonic flow meter installed - calibration in early June 2012
Flow Measurement - Effluent
Owner - Facility: Siler City WWTP
Inspection Type: Compliance Evaluation
Inspector understood that pumping capacity was 10 MOD, and facility is currently
permitted for 4 MGD.
Comment: The facility should ensure a quick connect and back-up portable generator
for this pump station to mitigate risk in event of a power loss.
Yes No NA NEFlow Measurement - Effluent
Comment:Influent flow is measured.
Yes No NA NEEqualization Basins
■ 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?
■ Are all pumps operable?
■ Are float controls operable?
■ Are audible and visual alarms operable?
■ # Is basin size/volume adequate?
Yes No NA NEOxidation Ditches
■ o Are the aerators operational?
■ Are the aerators free of excessive solids build up?
■ o # Is the foam the proper color for the treatment process?
■ oDoes the foam cover less than 25% of the basin’s surface?
■ o Is the DO level acceptable?
■ Are settleometer results acceptable (> 30 minutes)?
■ oIs the DO level acceptable?(1.0 to 3.0 mg/l)
■ □00Are settelometer results acceptable?(400 to 800 ml/l in 30 minutes)
Yes No NA NESecondary Clarifier
■ nonIs the clarifier free of black and odorous wastewater?
5Page #
Owner - Facility: Siler City WWTP
Inspection Type: Compliance Evaluation
Permit: NC0026441
Inspection Date: 06/14/2012
Comment: The facility uses one Equalization Basin (Zone 2) that was in operation for
influent flow equalization the day of the inspection. The facility retains additional
equalization basins (zone 3 a & b and zone 4 a & b) for use as influent storage or
sludge storage (back-up for digester storage) in case of power loss. These basins are
only used as needed in high flow or back-up situations.(The basins contain aeration.
*Basin (Zone 4 a & b were isolated currently and in need of repair with major crack and
rusted rebar that was observed while viewing the sludge transfer station. The ORC
reported that this Zone no longer receives sludge for storage.
Comment: The facility contains two oxidation ditches, one was in service the day of
the inspection. The facility has lost Townsend Plant wastewater- as the plant closed
down. Thus, plant now has a lot of capacity that is not currently needed/being utilized.
Permit: NC0026441
Yes No NA NESecondary Clarifier
■ oIs 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?
■ o Is the drive unit operational?
■ o Is the return rate acceptable (low turbulence)?
■ Is the overflow clear of excessive solids/pin floc?
■ o Is the sludge blanket level acceptable? (Approximately % of the sidewall depth)
Aerobic Digester Yes No NA NE
■ O Is the capacity adequate?
■ Is the mixing adequate?
■ Is the site free of excessive foaming in the tank?
■ # Is the odor acceptable?
■ # Is tankage available for properly waste sludge?
Solids Handling Equipment Yes No NA NE
Is the equipment operational?
o Is the chemical feed equipment operational?
0 Is storage adequate?
Page #6
Owner - Facility: Siler City WWTP
Inspection Type: Compliance Evaluation
However, the sludge transfer station (4a and 4b) 4b has been isolated to mitigate risk of
failure due to major cracks and rusted rebar. The 4b capacity is not currently needed,
but continued maintenance of permitted treatment units is required by the permit.
Comment: The facility has two aerobic digesters. Synagro is contracted to remove
sludge solids (WQ 0016247). The facility had plenty of tankage available the day of the
inspection, as again flows are down due to loss of Townsend/lndustry closing.
Comment: The facility has two secondary clarifiers. Alum is added at the splitter box
to the secondary clarifiers to facilitate settling and treatment. Alkalinity is also adjusted
with lime addition. It is recommended that the facility consult the chemical supplier with
regards to feeding the two additives together at the same location as some turbidity was
observed during the inspection.
Inspection Date: 06/14/2012
1
Permit: NC0026441
Inspection Date: 06/14/2012
Yes No NA NESolids Handling Equipment
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?
Yes No NA NEFiItration (High Rate Tertiary)
Down flowType of operation:
■ Is the filter media present?
■ Is the filter surface free of clogging?
■ Is the filter free of growth?
■ Is the air scour operational?
■ o Is the scouring acceptable?
■ Is the clear well free of excessive solids and filter media?
The facility reported that the media in the filters was replaced @ 2001.
Yes No NA NEDisinfection-Gas
■ Are cylinders secured adequately?
■ Are cylinders protected from direct sunlight?
■ Is there adequate reserve supply of disinfectant?
■ Is the level of chlorine residual acceptable?
■ Is the contact chamber free of growth, or sludge buildup?
■ □00Is there chlorine residual prior to de-chlorination?
Page #7
Owner - Facility: Siler City WWTP
Inspection Type: Compliance Evaluation
The facility reported that some of the filtered effluent is used for pump seals, lime slurry,
and alum feed.
Comment: The facility has four filters and reported that are all backwashed at the
same time. The capacity of the filters is 10 MOD, and the plant is permitted for only 4
MGD discharge.
Comment: The facility uses Dissolved Air Floatation (DAF) - currently the use is
intermittent with loss of flow from Townsend. Sludge removed from the DAF is
thickened in the DAF Thickener Basin and processed for removal by Synagro. Please
note the DAF assists with Algal control. Some algal growth was observed at the plant
during the inspection. Also the DAF is written in the permit as a part of the treatment
trane, and this could also be considered a bypass of a permitted treatment unit.
r
Permit: NC0026441
Inspection Date: 06/14/2012
Yes No NA NEDisinfection-Gas
■ Does the Stationary Source have more than 2500 lbs of Chlorine (CAS No. 7782-50-5)?
■ If yes, then is there a Risk Management Plan on site?
7782-505If yes, then what is the EPA twelve digit ID Number? (1000-..)
03/01/2009If yes, then when was the RMP last updated?
Comment:
Yes No NA NEDe-chlorination
GasType of system ?
■ Is the feed ratio proportional to chlorine amount (1 to 1)?
■ o o 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 for dechlorination.Comment:
■ OAre tablet de-chlorinators operational?
Number of tubes in use?
Comment:
Yes No NA NEEffluent Sampling
■ Is composite sampling flow proportional?
■ o Is sample collected below all treatment units?
■ Is proper volume collected?
■ Is the tubing clean?
■ # Is proper temperature set for sample storage (kept at less than or equal to 6.0 degrees Celsius)?
■ □OOIs the facility sampling performed as required by the permit (frequency, sampling type representative)?
Yes No NA NEEffluent Pipe
■ nonIs 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?
Page #8
Owner - Facility: Siler City WWTP
Inspection Type: Compliance Evaluation
Sampling of wastewater effluent is done after step-aeration and before flow reaches the
effluent pipe (that commingles with stormwater from SW Outfall 002 during rain events).
Comment: The facility pumps the effluent up to the sampler - collected as flow
proportional (fixed time-fixed volume).
Permit: NC0026441
Inspection Date: 06/14/2012
Yes No NA NEEffluent Pipe
Record Keeping Yes No NA NE
■ OAre records kept and maintained as required by the permit?
■ Is all required information readily available, complete and current?
■ oAre all records maintained for 3 years (lab. reg. required 5 years)?
■ Are analytical results consistent with data reported on DMRs?
■ 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
■ Are DMRs complete: do they include all permit parameters?
■ oHas the facility submitted its annual compliance report to users and DWQ?
o ■ (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?
■ o 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?
■ ODDFacility has copy of previous year's Annual Report on file for review?
Yes No NA NELaboratory
■ Are field parameters performed by certified personnel or laboratory?
Page #9
Owner - Facility: Siler City WWTP
Inspection Type: Compliance Evaluation
The ORC keeps excellent records as evidenced by his ability to accomodate inspector
requests for ORC log, DMR's, and Lab Bench data. Further the lab records and lab
methods were provided as well. The assistance of both the ORC and Lab staff was
greatly appreciated.
Comment: The effluent flows by gravity through step aeration into the effluent pipe to
the outfall.
Comment: ORC is Chris McCorquodale (Grade 4 WW certf. number 993421). The
back-up ORCs are Ann Clark and David Hicks, both certified WW-3 operators.
Laboratory Yes No NA NE
■ □00Are all other parameters(excluding field parameters) performed by a certified lab?
■ DOO# Is the facility using a contract lab?
■ ODO# Is proper temperature set for sample storage (kept at less than or equal to 6.0 degrees Celsius)?
0 O 0 ■Incubator (Fecal Coliform) set to 44.5 degrees Celsius*/- 0.2 degrees?
D D D ■Incubator (BOD) set to 20.0 degrees Celsius +/- 1.0 degrees?
Page #10
Owner - Facility: Siler City WWTP
Inspection Type: Compliance Evaluation
Permit: NC0026441
Inspection Date: 06/14/2012
Comment: Attached is the RRO Lab Checklist. The lab certification unit completed a
lab inspection in 2010.
Total Nitrogen mg/L
25.000000
20.000000
15.000000
-♦-Mg/L
10.000000
5.000000
0.000000
TKN mg/L
4.500000
4.000000
3.500000
3.000000
2.500000
2.000000 ■ TKN mg/L
—1.500000
1.000000
0.500000
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November 8, 2012
1
Dear Ms. Romanski:
Sincerely,
WILLIAM C. MORGAN, JR.
TOWN ATTORNEY
JOEL J. BROWER
TOWN MANAGER
PHONE: [phone]
FAX: [phone] COMMISSIONERS
SAM ADAMS
CINDY BRAY
LARRY CHEEK
MICHAEL CONSTANTINO
THOMAS K. "CHIP" PRICE, III
TONY SILER
CHARLES J. JOHNSON
MAYOR
JOHN GRIMES
PROTEM
Autumn Romanski, Environmental Program Consultant
NCDENR
Surface Water Protection Section
Raleigh Regional Office
1601 Mail Service Center
Raleigh, North Carolina 27699-1601
'Qlntnn of Cit^
POST OFFICE BOX 769
31 1 NORTH SECOND AVENUE
SILER CITY, NORTH CAROLINA 27344-0769
NC DENR
gh Regional Offii
TOWN OF SILER CITY
Terry Green
Director of Public Works & Utilities
This letter is in response to the NPDES Compliance Inspection Report on the Siler City
Wastewater Treatment Plant - NPDES Permit No. NC0026441 and NPDES Permit No.
NCG110085. On October 17, 2012, we had Ron Stephens with the Kemp Corporation from
Sherrill Fords, NC to come and look at Zone 4B of the equalization basin to determine what
type of repair could be made to this wall. At this point, we have not received a cost estimate
on this repair. Zone 4A can still be used if necessary and isolate Zone 4B. When I receive this
figure, we will then make a determination of what needs to be done. Should you have
questions or concerns, please call me at 919-742-4732.
MAM 11 7. 1W7