NC0055786_Regional Office Historical File Pre 2016

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NCDENR
North Carolina Department of Environment and Natural Resources
Pat McCrory
Governor
August 14, 2015
City of Lexington
Attn: Giselle Comer
28 W. Center Street
Lexington, NC 27292
SUBJECT: Compliance Evaluation Inspection
Lexington Regional WWTP
NPDES Permit No. NCO055786
Davidson County
Dear Ms. Comer:
Donald R. van der Vaart
Secretary
On July 21, 2015, Jenifer Carter of the Winston-Salem Regional Office conducted a Compliance Evaluation
Inspection at the City of Lexington Regional Wastewater Treatment Plant. Mr. Joseph C. Shaffer, ORC,
was present during the inspection. The inspection consisted of two parts: an on -site inspection of the
treatment facility and a review of facility files and self -monitoring data.
A review of the self -monitoring data revealed no NPDES limits violations. Lab data correlated correctly
with data on the submitted Discharge Monitoring Reports. Facility records were well organized and current.
ORC visitation and maintenance records were sufficient.
Overall the plant appears to be well maintained and operated, a great improvement over last year's
inspection. No deficiencies or violations were noted during the inspection of the WWTP. Please review the
enclosed inspection form for more detailed information. If you have any questions, please call Jenifer
Carter at [phone].
attachment
cc: Joseph C. Shaffer, ORC (same address)
DWR-Central Files
WSRO Files
Sincerely,
W. Corey Basinger, Regional Office Supervisor
Water Quality Regional Operations Section
Division of Water Resources, NC DENR
450 W Hanes Mill Rd., Suite 300, Winston-Salem, NC 27105
Phone: [phone] \ Internet: www.ncdenr.gov
An Equal Opportunity \ Affirmative Action Employer — Made in part by recycled paper

United States Environmental Protection Agency
Form Approved.
EPA Washington, D.C. 20460
OMB No. 2040-0057
Water Compliance Inspection Report
Approval expires8-31-98
Section A: National Data System Coding (i.e., PCS)
Transaction Code NPDES yr/mo/day Inspection Type Inspector Fac Type
1 IN 1 2 15 1 3 I N00055786 I11 12 15/07/21 17 18 L CJ 19 1 G 201
21I1I1II IIIIII11111IIIIIII1IIIIII IIIIIIIIIII 166
Inspection Work Days Facility Self -Monitoring Evaluation Rating 131 CIA ----------- -----Reserved ------- ----
67 70 [, j 71 I„ I 72 � L,, � 73 �74 75I III I 11 180
LJ _1
Section B: Facility Data
Name and Location of Facility Inspected (For Industrial Users discharging to POTW, also include
Entry Time/Date
Permit Effective Date
POTW name and NPDES permit Number)
11:50AM 15/07/21
09/08/01
Lexington Regional WWTP
Exit Time/Date
Permit Expiration Date
500 Glendale Rd
01:00PM 15/07/21
14/04/30
Lexington NC 27292
Name(s) of Onsite Representative(s)/Titles(s)/Phone and Fax Number(s)
Other Facility Data
Joseph Charles Shaffer//336-357-5090 /
Name, Address of Responsible Official/Title/Phone and Fax Number
Contacted
Alan Carson,28 W Center St Lexington NC 272923099//336-248-3910/3362482907
No
Section C: Areas Evaluated During Inspection (Check only those areas evaluated)
Permit N Flow Measurement Operations & Maintenance Records/Reports
Self -Monitoring Program 0 Sludge Handling Disposal Facility Site Review Effluent/Receiving Waters
Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary)
(See attachment summary)
Name(s) and Signature(s) of Inspector(s) Agency/Office/Phone and Fax Numbers Date
/
Jenifer Carter - WSRO WQ//336-776-9691/�!-
91_�
Signature of Management Q A Reviewer Agency/Office/Phone and Fax Numbers Date
ef
..ad✓ : _,1��" I.w �.( i.a. r.�a r _,y!5 � '_ � �y S»-ef .e..p wca .�;. .. .. ... �
EPA Form 3560-3 (Rev 9-94) Previous editions are obsolete.
Page#

NPDES yr/mo/day Inspection Type
31 NCO055786 I11 121 15/07/21 117 18 I c
Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary)
Page#

Permit: NCO055786 Owner -Facility: Lexington Regional WWTP
Inspection Date: 07/2112015 Inspection Type: Compliance Evaluation
Permit
Yes No NA NE
(If the present permit expires in 6 months or less). Has the permittee submitted a new
M
❑
❑
❑
application?
Is the facility as described in the permit?
❑
M
❑
❑
# Are there any special conditions for the permit?
❑
M
❑
❑
Is access to the plant site restricted to the general public?
0
❑
❑
❑
Is the inspector granted access to all areas for inspection?
0
❑
❑
❑
Comment: Primary clarifiers no longer used. Trickling filters dismantled. Anaerobic digesters serve as
sludge holding tanks only.
Record Keeping
Yes No NA NE
Are records kept and maintained as required by the permit?
0
❑
❑
❑
Is all required information readily available, complete and current?
M
❑
❑
❑
Are all records maintained for 3 years (lab. reg. required 5 years)?
0
❑
❑
❑
Are analytical results consistent with data reported on DMRs?
M
❑
❑
❑
Is the chain -of -custody complete?
M
❑
❑
❑
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?
M
❑
❑
❑
Has the facility submitted its annual compliance report to users and DWQ?
0
❑
❑
❑
(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?
M
❑
❑
❑
Is the ORC certified at grade equal to or higher than the facility classification?
0
❑
❑
❑
Is the backup operator certified at one grade less or greater than the facility classification?
0
❑
❑
❑
Is a copy of the current NPDES permit available on site?
M
❑
❑
❑
Facility has copy of previous year's Annual Report on file for review?
M
❑
❑
❑
Comment:
Influent Sampling Yes No NA NE
# Is composite sampling flow proportional? ❑ ❑ 0 ❑
Page# 3

Permit: NCO055786 Owner - Facility: Lexington Regional WWTP
Inspection Date: 07/21/2015 Inspection Type: Compliance Evaluation
Influent Sampling
Yes No NA NE
Is sample collected above side streams?
0
❑
❑
❑
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
0
❑
❑
❑
Celsius)?
Is sampling performed according to the permit?
0
❑
❑
❑
Comment. -
Effluent Sampling
Yes No NA NE
Is composite sampling flow proportional?
N
❑
❑
❑
Is sample collected below all treatment units?
0
❑
❑
❑
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
M
❑
❑
❑
Celsius)?
Is the facility sampling performed as required by the permit (frequency, sampling type
0
❑
❑
❑
representative)?
Comment:
Flow Measurement - Effluent
Yes No NA NE
# Is flow meter used for reporting?
N
❑
❑
❑
Is flow meter calibrated annually?
0
❑
❑
❑
Is the flow meter operational?
N
❑
❑
❑
(If units are separated) Does the chart recorder match the flow meter?
❑
❑
N
❑
Comment: Calibration last checked on January 30, 2015.
Operations & Maintenance Yes No NA NE
Is the plant generally clean with acceptable housekeeping? M ❑ ❑ ❑
Does the facility analyze process control parameters, for ex: MLSS, MCRT, Settleable 0 ❑ ❑ ❑
Solids, pH, DO, Sludge Judge, and other that are applicable?
Comment: Much better handling of trash, thanks in part to the new fine screen at the headworks.
Bar Screens Yes No NA NE
Type of bar screen
a.Manual
Page# 4

0
Permit: NC0055786
Owner - Facility: Lexington Regional WWTP
Inspection Date: 07/21/2015
Inspection Type: Compliance Evaluation
Bar Screens
Yes No NA NE
b.Mechanical
N
Are the bars adequately screening debris?
0
❑
❑
❑
Is the screen free of excessive debris?
0
❑
❑
❑
Is disposal of screening in compliance?
0
❑
❑
❑
Is the unit in good condition?
N
❑
❑
❑
Comment: New fine screen installed. Great improvement!
Pump Station - Influent
Yes No NA NE
Is the pump wet well free of bypass lines or structures?
E
❑
❑
❑
Is the wet well free of excessive grease?
N
❑
❑
❑
Are all pumps present?
0
❑
❑
❑
Are all pumps operable?
0
❑
❑
❑
Are float controls operable?
0
❑
❑
❑
Is SCADA telemetry available and operational?
❑
❑
N
❑
Is audible and visual alarm available and operational?
❑
❑
❑
Comment: Alarm goes of in control building, according to Mr. Shaffer.
Grit Removal
Yes No NA NE
Type of grit removal
a.Manual
❑
b.Mechanical
Is the grit free of excessive organic matter?
N
❑
❑
❑
Is the grit free of excessive odor?
E
❑
❑
❑
# Is disposal of grit in compliance?
N
❑
❑
❑
Comment:
Aeration Basins
Yes No NA NE
Mode of operation
Plug flow
Type of aeration system
Diffused
Is the basin free of dead spots?
N ❑
❑
❑
Are surface aerators and mixers operational?
❑ ❑
0
❑
Are the diffusers operational?
0 ❑
❑
❑
Is the foam the proper color for the treatment process?
N ❑
❑
❑
Page# 5

Permit: NCO055786
Inspection Date: 07/21/2015
Owner - Facility: Lexington Regional vwVTP
Inspection Type: Compliance Evaluation
Aeration Basins
Yes No NA NE
Does the foam cover less than 25% of the basin's surface?
0
❑
❑
❑
Is the DO level acceptable?
M
❑
❑
❑
Is the DO level acceptable?(1.0 to 3.0 mg/1)
M
❑
❑
❑
Comment: A few diffusers out, but appears well aerated. ABs used for BNR/ to remove Phosphorus as
required by the permit.
Nutrient Removal
Yes No NA NE
# Is total nitrogen removal required?
❑ M
❑
❑
# Is total phosphorous removal required?
M ❑
❑
❑
Type
Biological
# Is chemical feed required to sustain process?
❑ ❑
❑
Is nutrient removal process operating properly?
❑
❑
❑
Comment:
Secondary Clarifier
Yes No NA NE
Is the clarifier free of black and odorous wastewater?
0
❑
❑
❑
Is the site free of excessive buildup of solids in center well of circular clarifier?
0
❑
❑
❑
Are weirs level?
M
❑
❑
❑
Is the site free of weir blockage?
0
❑
❑
❑
Is the site free of evidence of short-circuiting?
M
❑
❑
❑
Is scum removal adequate?
0
❑
❑
❑
Is the site free of excessive floating sludge?
0
❑
❑
❑
Is the drive unit operational?
0
❑
❑
❑
Is the return rate acceptable (low turbulence)?
0
❑
❑
❑
Is the overflow clear of excessive solids/pin floc?
0
❑
❑
❑
Is the sludge blanket level acceptable? (Approximately ''% of the sidewall depth)
M
❑
❑
❑
Comment:
Lagoons Yes No NA NE
Type of lagoons?
# Number of lagoons in operation at time of visit? 2
Are lagoons operated in? Parallel
# Is a re -circulation line present? 0 ❑ ❑ ❑
Is lagoon free of excessive floating materials? 0 ❑ ❑ ❑
Page# 6

Permit: NC0055786 Owner -Facility: Lexington Regional WWTP
Inspection Date: 07/21/2015 Inspection Type: Compliance Evaluation
Lagoons
Yes No NA NE
# Are baffles between ponds or effluent baffles adjustable?
❑
❑
M
❑
Are dike slopes clear of woody vegetation?
M
❑
❑
❑
Are weeds controlled around the edge of the lagoon?
0
❑
❑
❑
Are dikes free of seepage?
M
❑
❑
❑
Are dikes free of erosion?
M
❑
❑
❑
Are dikes free of burrowing animals?
M
❑
❑
❑
# Has the sludge blanket in the lagoon (s) been measured periodically in multiple
❑
❑
M
❑
locations?
# If excessive algae is present, has barley straw been used to help control the growth?
❑
❑
0
❑
Is the lagoon surface free of weeds?
0
❑
❑
❑
Is the lagoon free of short circuiting?
0
❑
❑
❑
Comment:
Disinfection -Liquid
Yes No NA NE
Is there adequate reserve supply of disinfectant?
0
❑
❑
❑
(Sodium Hypochlorite) Is pump feed system operational?
0
❑
❑
❑
Is bulk storage tank containment area adequate? (free of leaks/open drains)
0
❑
❑
❑
Is the level of chlorine residual acceptable?
M
❑
❑
❑
Is the contact chamber free of growth, or sludge buildup?
M
❑
❑
❑
Is there chlorine residual prior to de -chlorination?
M
❑
❑
❑
Comment:
De -chlorination
Yes No NA NE
Type of system ?
Liquid
Is the feed ratio proportional to chlorine amount (1 to 1)?
0 ❑
❑
❑
Is storage appropriate for cylinders?
❑ ❑
M
❑
# Is de -chlorination substance stored away from chlorine containers?
0 ❑
❑
❑
Comment:
Are the tablets the proper size and type? ❑ ❑ ❑
Are tablet de -chlorinators operational? ❑ ❑ ❑
Number of tubes in use?
Comment:
Page# 7

I
Permit: NC0055786 Owner -Facility:
Inspection Date: 07/21/2015 Inspection Type:
Lexington Regional WWTP
Compliance Evaluation
Effluent Pine
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?
❑
❑
M
❑
Comment:
Standby Power
Yes No NA NE
Is automatically activated standby power available?
0
❑
❑
❑
Is the generator tested by interrupting primary power source?
M
❑
❑
❑
Is the generator tested under load?
❑
❑
❑
Was generator tested & operational during the inspection?
N
❑
❑
❑
Do the generator(s) have adequate capacity to operate the entire wastewater site?
0
❑
❑
❑
Is there an emergency agreement with a fuel vendor for extended run on back-up power?
0
❑
❑
❑
Is the generator fuel level monitored?
N
❑
❑
❑
Comment: Tested under load every year according to records, thoough Mr. Shaffer says it is done more
often.
Page# 8

Carter, Jenifer
From: Joseph Shaffer <[e-mail]>
Sent: Tuesday, September 22, 2015 9:05 AM
To: Carter, Jenifer
Subject: #2 Final
#2 Final was put back in service on Friday the 182h @ 6AM

Carter, Jenifer
From:
Joseph Shaffer <[e-mail]>
Sent:
Monday, August 31, 2015 10:47 AM
To:
Carter, Jenifer
Cc:
Gisele H. Comer
Subject:
Finals
Our #2 Final Clarifier was taken out of service this morning @ 8:00 AM for
Surface recoating.

Carter, Jenifer
From:
Joseph Shaffer <[e-mail]>
Sent:
Thursday, July 30, 2015 4:43 PM
To:
Carter, Jenifer
Cc:
Gisele H. Comer
Subject:
finals
We closed off #2 final clarifier @ 3:30 PM for minor repairs.
Vendor is coming tomorrow.

Carter, Jenifer
From: Roger A. Spach <[e-mail]>
Sent: Thursday, May 21, 2015 9:15 AM
To: Carter, Jenifer
Cc: Joseph Shaffer; Gisele H. Comer
Subject: Treatment units bypassed.
Earlier I reported that our final clarifiers would be bypassed one at a time while rehab work was being done on the
concrete at the overflowsw. This work is now complete.
The last tank can be put into service at any time if necessary; however, the contractor asked us to hold it out of service
until Monday, May 25 if possible to allow the new concrete to cure.
The only problem that was incurred was a spike in phosphorous concentrations in the effluent when we switched
clarifiers. This should not result in non-compliance with this limit.

Carter, Jenifer
From: Roger A. Spach <[e-mail]>
Sent: Wednesday, April 22, 2015 8:13 AM
To: Carter, Jenifer
Subject: FW: filter aid
Still haven't heard from non -discharge ...........................but we found a back door for a verbal
From: Albert Rubin [mailto:[e-mail]]
Sent: Tuesday, April 21, 2015 8:05 PM
To: Roger A. Spach; <[e-mail]>
Subject: filter aid
hi all - i spoke with jon risgaard today... he was enthusiastic re the compost option... pat, may i send the draft
report showing the product quality to roger... better yet, would you forward it to him...
let's talk...

Carter, Jenifer
From: Roger A. Spach < RASpach@ Lexington NC.gov >
Sent: Monday, April 20, 2015 4:10 PM
To: Carter, Jenifer
Cc: Joseph Shaffer; Roger Jones; Steve Craver
Subject: bypass of treatment units
We're contracting out some concrete repair on our two final clarifiers starting next week. It will require us to take one
clarifier off-line at a time. Not sure how long this will take. With the thunderstorms around this time of year, we will
just have to play it by ear.
From: Steve Craver
Sent: Wednesday, April 15, 2015 12:30 PM
To: Roger A. Spach; Joseph Shaffer
Subject: finals
The work is slated to start repairing the final troughs the week of the 27`h
1

Carter, Jenifer
From:
Roger A. Spach <[e-mail]>
Sent:
Tuesday, March 24, 2015 3:32 PM
To:
Carter, Jenifer
Cc:
Joseph Shaffer
Subject:
FW: post air - by-pass of treatment units
Not sure if I sent you notice that we were yesterday or not....
Yesterday, we took both sides of our aeration tanks off line long enough to check for sludge accumulations in the post -
aeration tanks. The work started at 10:30 AM and finished at 6 P.M. This caused no problems in treatment.
From: Joseph Shaffer
Sent: Tuesday, March 24, 2015 3:25 PM
To: Roger A. Spach
Subject: FW: post air
From: Roger A. Spach
Sent: Monday, March 23, 2015 11:10 AM
To: Joseph Shaffer
Subject: RE: post air
Remember the budget hearing is at 11:45
From: Joseph Shaffer
Sent: Monday, March 23, 2015 11:06 AM
To: Roger A. Spach
Subject: post air
At 10:30 began to drain post air tank to see if they need any type of cleaning
1

Carter, Jenifer
From: Roger A. Spach <[e-mail]>
Sent: Monday, March 23, 2015 11:09 AM
To: Carter, Jenifer
Cc: Joseph Shaffer
Subject: Bypass of Treatment Units
They will shut off flow to each of the two sides of the aeration system one at a time to check for accumulation of sand.
Routine inspection. No problems expected
From: Joseph Shaffer
Sent: Monday, March 23, 2015 11:06 AM
To: Roger A. Spach
Subject: post air
At 10:30 began to drain post air tank to see if they need any type of cleaning
1

Carter, Jenifer
From:
Roger A. Spach <[e-mail]>
Sent:
Monday, March 16, 2015 2:04 PM
To:
Carter, Jenifer
Cc:
Joseph Shaffer
Subject:
FW: Contact Tanks
Bypass finished. No problems.
From: Joseph Shaffer
Sent: Monday, March 16, 2015 1:55 PM
To: Roger A. Spach
Subject: Contact Tanks
Both tanks are cleaned and are back in service

Carter, Jenifer
From:
Roger A. Spach <[e-mail]>
Sent:
Monday, March 16, 2015 9:02 AM
To:
Carter, Jenifer
Cc:
Joseph Shaffer
Subject:
FW: Contact Tanks
Bypass of treatment units. Routine maintenance — no problems anticipated
From: Joseph Shaffer
Sent: Monday, March 16, 2015 9:00 AM
To: Roger A. Spach
Subject: Contact Tanks
One side of the contact tanks was closed for cleaning @ 8 AM
Didn't know whether to contact Jennifer now or wait'til cleaning is complete.

Carter, Jenifer
From: Roger A. Spach <RASpach@Lexington NC.gov>
Sent: Tuesday, August 26, 2014 11:53 AM
To: Carter, Jenifer
Subject: FW: WSG Screen Pre -Startup
From: Steven Young fmailto:[e-mail])
Sent: Monday, August 25, 2014 5:12 PM
To: Roger A. Spach; Steve Craver
Subject: WSG Screen Pre -Startup
Roger/Steve,
Thanks for your time today and assistance in performing the Pre -Startup of the WSG screen at the First Stage Lift Station
today.
The following items were checked today:
- Channel inserts/screen installation
- Level control installation
- Mechanical checkout (checked rotation of screen drive and compactor screw auger)
- Electrical checkout
The screen is ready for our WSG factory startup technician who is scheduled to be onsite on Tuesday, September 9,
2014.
If you have any questions, please let me know.
Steven C. Young, PE
Premier Water, LLC
4726-C Park Road
Charlotte, NC 28209
Office: 704.523.4048
Fax: [phone]
Cell: 704.231.9964
www.premier-water.com
1

Carter, Jenifer
From: Roger A. Spach <[e-mail]>
Sent: Monday, August 2S, 2014 8:15 AM
To: Carter, Jenifer
Subject: FW: startup
The fine screen installation is ready to go. We are waiting on the vendor.
From: Steve Craver
Sent: Monday, August 25, 2014 7:49 AM
To: Steven Young
Cc: Roger A. Spach
Subject: startup
We had talked about startup being the week of the 25th of August. WSG has not called with a day or time .I think we are
ready.
Thank you Steve Craver
336.240.2048

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4 kT94o
r
NCDENR
North Carolina Department of Environment and Natural Resources
Pat McCrory
Governor
July 14, 2014
Ms. Gisele Comer
City of Lexington
28 West Center Street
Lexington, NC 27292
SUBJECT: Pretreatment Compliance Inspection and
Follow-up Compliance Evaluation Inspection
City of Lexington
NPDES Permit #NC0055786
Davidson County
John E. Skvarla, III
Secretary
A Pretreatment Compliance Inspection was performed by Jenifer Carter of the Winston-Salem Regional Office, on
the subject facility on June 24, 2014. You were present for the inspection. The purpose of this inspection was to
determine the effectiveness of the pretreatment program and included a review of pretreatment program elements,
POTW plant performance, industry monitoring data, adherence to the enforcement response plan (ERP), and an
Industry Inspection.
The City currently has five (5) Significant Industrial Users (SIU), four (4) of which are categorical. There were no
SIUs in significant non-compliance (SNC) during for the second half of 2012 for permit limits or reporting violations.
The plant had Ammonia permit limits violations in July 2013 due to a leak at the plant. This was previously addressed
during the Division's regular monthly enforcement program.
Ms. Comer has correctly identified Atrium Windows as a Significant Industrial User and is in the process of issuing
them an Industrial User Permit. They will most likely be brought under the Federal Code of Federal Regulations, Part
463 — Plastics Molding and Forming Point Source Category.
A follow-up Compliance Evaluation was also performed to determine the effectiveness of stepped up efforts to
reduce trash throughout the plant since the last Compliance Evaluation Inspection in February 2014. It appeared that
improvements have made a vast difference, with no trash being observed in the secondary clarifiers, the chlorine
contact chamber, past aeration nor, most importantly, the effluent discharge pipe and surface waters. It is the hope of
the Division that these efforts are maintained indefinitely.
Overall, the inspections showed the pretreatment program, and the plant to be well maintained. Please refer to the
attached inspection report for further detail. If you have any questions please contact Jenifer Carter at [phone].
enclosure:
cc: WSRO Files
SWP — Central Files
Roger Spach (same address)
Monti Hassan — PERCS Unit
Sincerely,
7T�_ W. Corey Basinger, Regional Supervisor
Water Quality Regional Operations Section
Division of Water Resources, NC DENR
585 Waughtown St., Winston-Salem, NC 27107
Phone: [phone] Internet: www.ncdenr.gov
An Equal Opportunity1 Affirmative Action Employer— Made in part by recycled paper

United States Environmental Protection Agency
Form Approved.
EPA Washington, D.C. 20460
OMB No. 2040-0057
Water Compliance Inspection Report
Approval expires 8-31-98
Section A: National Data System Coding (i.e., PCS)
Transaction Code NPDES yr/mo/day Inspection Type
Inspector Fac Type
1 u 2 15 1 3 1 N00055786 111 12 14/06/24 17 18 I C I
19 1 G 1 201
21111111 1 1111III II Ill IIII I I I I I I I IIIII111111
2
Inspection
Work Days I Facility Self -Monitoring Evaluation Rating B1 QA —----------- —----- Reserved ----- —----- ----
67
70 �, J 71 [ N 72 L N 73 � I 74 751 1 1 1 1 I( I80
L—I LJ l
Section B: Facility Data
Name and Location of Facility Inspected (For Industrial Users discharging to POTW, also include
Entry Time/Date
Permit Effective Date
POTW name and NPDES permit Number)
10:OOAM 14/06/24
09/08/01
Lexington Regional WWTP
500 Glendale Rd
Exit Time/Date
Permit Expiration Date
Lexington NC 27292
01:30PM 14/06/24
14/04/30
Name(s) of Onsite Representative(s)fritles(s)/Phone and Fax Number(s)
Other Facility Data
Joseph Charles Shaffer//336-357-5090 /
Name, Address of Responsible Officialrritle/Phone and Fax Number
Contacted
Roger Allen Spach,28 W Center St Lexington NC
272923099//336-248-3970/3362493584 Yes
Section C: Areas Evaluated During Inspection (Check only those areas evaluated)
Operations & Maintenance 0 Facility Site Review N Effluent/Receiving Waters
Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary)
(See attachment summary)
Name(s) and Signature(s) of Inspector(s) Agency/Office/Phone and Fax Numbers
Date
Jenif Carter WSRO WQ//336-771-5000/
>/
Signature ofManagementQ A Reviewer Agency/Office/Phone and Fax Numbers
Date
EPA Form 3560-3 (Rev 9-94) Previous editions are obsolete.
Page#

NPDES yr/mo/day Inspection Type
31 NC0055786 I11 12 14/06/24 17 18 I (`
Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary)
This was a follow-up inspection to the February 2014 inspection, to make sure trash removal had
greatly improved and was no longer allowed to go through the entire plant to surface waters. No trash
was observed anywhere downstream of the primary clarifiers. A vast improvement!
l
Page#

Permit: NCO055786 Owner - Facility: Lexington Regional VWVTP
Inspection Date: 06/24/2014 Inspection Type: Compliance Evaluation
Operations $ Maintenance Yes No NA NE
Is the plant generally clean with acceptable housekeeping? 0 ❑ ❑ ❑
Does the facility analyze process control parameters, for ex: MLSS, MCRT, Settleable 0 ❑ ❑ ❑
Solids, pH, DO, Sludge Judge, and other that are applicable?
Comment:
Secondary Clarifier
Yes No NA NE
Is the clarifier free of black and odorous wastewater?
0
❑
❑
❑
Is the site free of excessive buildup of solids in center well of circular clarifier?
0
❑
❑
❑
Are weirs level?
0
❑
❑
❑
Is the site free of weir blockage?
0
❑
❑
❑
Is the site free of evidence of short-circuiting?
0
❑
❑
❑
Is scum removal adequate?
0
❑
❑
❑
Is the site free of excessive floating sludge?
N
❑
❑
❑
Is the drive unit operational?
0
❑
❑
❑
Is the return rate acceptable (low turbulence)?
❑
❑
❑
Is the overflow clear of excessive solids/pin floc?
0
❑
❑
❑
Is the sludge blanket level acceptable? (Approximately ''Y4 of the sidewall depth)
0
❑
❑
❑
Comment:
Disinfection -Liquid
Yes No NA NE
Is there adequate reserve supply of disinfectant?
❑
❑
❑
M
(Sodium Hypochlorite) Is pump feed system operational?
0
❑
❑
❑
Is bulk storage tank containment area adequate? (free of leaks/open drains)
❑
❑
❑
Is the level of chlorine residual acceptable?
M
❑
❑
❑
Is the contact chamber free of growth, or sludge buildup?
0
❑
❑
❑
Is there chlorine residual prior to de -chlorination?
❑
❑
❑
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? ❑ ❑ 0 ❑
Comment:
Page# 3

Permit: NC0055786
Inspection Date: 06/24/2014
Owner -Facility: Lexington Regional WWTP
Inspection Type: Compliance Evaluation
Page#

Basinger, Corey
From:
Basinger, Corey
Sent:
Tuesday, April 01, 2014 4:17 PM
To:
Roger A. Spach ([e-mail])
Cc:
Carter, Jenifer
Subject:
Response to NOV
Roger,
I have received and reviewed your response to the Notice of Violation for failure to provide proper maintenance at
Lexington's WWTP and for discharge of floating solids to Abbotts Creek. At this time, the Division will take no further
action; however, please be aware of the following:
1. Notify our office (Jenifer Carter or myself) upon installation of the new influent fine screen.
2. DWR staff will follow up periodically in the coming months to ensure that proper maintenance is provided at the
facility.
3. Future violations of the same or similar nature could result in the assessment of civil penalties.
Thank you for your immediate attention to the Notice of Violation. Please contact me directly should you have any
questions or comments.
Many thanks.
Corey
W. Corey Basinger
Regional Supervisor
Water Quality Regional Operations
Winston-Salem Regional Office
Division of Water Resources
Email: [e-mail]
Phone: [phone]
Fax [phone]
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.

LP,,�f��
i
City of Lexington, NC
Department of Water Resources
March 31, 2014
Attn: Mr. Corey Basinger
NCDENR/DWR
Winston-Salem Regional Office
585 Waughtown Street
Winston-Salem, NC 27107
Subject: Notice of Violation: NOV-2014-PC-0046
Compliance Evaluation Inspection
Lexington Regional WWTP
NPDES Permit No. NCO055786
Davidson County
Dear Mr. Basinger:
Per your letter dated March 3, 2014 regarding the above matter:
RECEIVED
N.C.Dept. of ENR
APR 01 2014
Winston-Salem
Regional Office
1. Clean up of the screens removing the floating matter is complete.
2. The screens on the chlorine contact chambers and post aeration tank have been
modified to make them more efficient.
3. The screen in the post aeration tank has been moved to a location that will make it
more effective.
4. An additional screen is being fabricated to be installed in series with the present one
located in the post aeration tank.
5. And most importantly, clearer lines of responsibility have been established for cleaning
the screens in the future.
With regard to the installation of the new influent fine screen:
1. Delivery is scheduled for June.

2. 1 have authorized about $30,000 worth of materials and work (so far) to accelerate the
installation of the fine screen. We still have to install the water line for a back wash
system and arrange for the electrical supply to the installation.
3. Hopefully, all the work necessary for the installation will be completed by the time that
the screen arrives
4. If nothing unforeseen happens, the unit should be in service by Labor Day.
The existing screens will have to remain in place so that the accumulated materials will have
time to be worked out of the treatment units. Also, the influent fine screen is not duplicated. I
will anticipate bypass of it from time to time while repairs are made.
Please forward any questions and comments to my attention at [e-mail] or
by phone — 336-248-3970.
Sincerely,
Roger Spach, Water Resources Superintendent
Cc: Alan Carson, Joseph Shaffer

It
RECEIVED
N.C.Dept. of ENR
APR 0 1 2014
Winston-Salem
Re 'oval Office
cAR�
City of Lexington, NC
Department of Water Resources
March 31, 2014
Attn: Mr. Corey Basinger
NCDENR/DWR
Winston-Salem Regional Office
585 Waughtown Street
Winston-Salem, NC 27107
Subject: Notice of Violation: NOV-2014-PC-0046
Compliance Evaluation Inspection
Lexington Regional WWTP
NPDES Permit No. NCO055786
Davidson County
Dear Mr. Basinger:
Per your letter dated March 3, 2014 regarding the above matter:
1. Cleanup of the screens removing the floating matter is complete.
2. The screens on the chlorine contact chambers and post aeration tank have been
modified to make them more efficient.
3. The screen in the post aeration tank has been moved to a location that will make it
more effective.
4. An additional screen is being fabricated to be installed in series with the present one
located in the post aeration tank.
5. And most importantly, clearer lines of responsibility have been established for cleaning
the screens in the future.
With regard to the installation of the new influent fine screen:
1. Delivery is scheduled for June.

2. 1 have authorized about $30,000 worth of materials and work (so far) to accelerate the
installation of the fine screen. We still have to install the water line for a back wash
system and arrange for the electrical supply to the installation.
3. Hopefully, all the work necessary for the installation will be completed by the time that
the screen arrives
4. If nothing unforeseen happens, the unit should be in service by Labor Day.
The existing screens will have to remain in place so that the accumulated materials will have
time to be worked out of the treatment units. Also, the influent fine screen is not duplicated. I
will anticipate bypass of it from time to time while repairs are made.
Please forward any questions and comments to my attention at [e-mail] or
by phone — 336-248-3970.
Sincerely,
Roger Spach, Water Resources Superintendent
Cc: Alan Carson, Joseph Shaffer

Carter, Jenifer
From: Roger A. Spach <RASpach@Lexington NC.gov>
Sent: Thursday, March 27, 2014 3:28 PM
To: Carter, Jenifer
Cc: Joseph Shaffer
Subject: FW: bypass of treatment units - NCO055786
The chlorine contact tanks were taken out of service one at a time and cleaned today. Work started at 6:30 this
morning and was completed at 1:30 P.M. this evening. No deterioration of the effluent due to the cleaning was noted.
If you need a hard copy of this notice, please let me know.
From: Roger A. Spach
Sent: Wednesday, March 26, 2014 3:59 PM
To: Carter, Jenifer
Cc: Joseph Shaffer
Subject: bypass of treatment units
They are going to wash out the chlorine contact tank tomorrow. It will be down one side at a time until the work is
finished

Carter, Jenifer
From: Alan Carson <[e-mail]>
Sent: Tuesday, March 25, 2014 5:44 PM
To: Carter, Jenifer
Cc: Roger A. Spach
Subject: RE: sewer overflow on March 6th or 7th
Jenifer,
My apologies .... I was made aware of a spill during the ice storm and assumed it was Lexington, when in fact it was
Thomasville as was reported in The Dispatch on March 11, 2014 for 498,000 gallons I believe. I reported to FEMA
incorrect verbal information. If there is anything else I need to do please let me know.
Alan Carson
City Manager
City of Lexington
From: Carter, Jenifer [mailto jenifer.carterOncdenr.gov]
Sent: Tuesday, March 25, 2014 3:41 PM
To: Alan Carson
Subject: sewer overflow on March 6th or 7th
Alan,
FEMA has told us that, during a Damage Assessment they were performing earlier this month, you informed them of a
'2,000,000-gallon sanitary sewer overflow at the Glendale Pump Station that flowed to Abbott's Creek.' It was said to
have occurred on March 6t" or 71". We were unable to confirm this information for them, as there is no record of it
having been reported to DENR. Please provide us with more detail of the SSO, if it in fact occurred, including why it
might not have been reported to DENR as required.
Roger Spach and Joe Shaffer seemed unaware of such an SSO having occurred when I spoke to them earlier today.
Thank you,
Jenifer Carter
Before printing this email, please consider your budget and the environment.
If you must print. please print only what you need and save ink with the free Eco-Pont.
NC DENR Winston-Salem Regional Office
Division of Water Resources
585 Waughtown Street
Winston-Salem, NC 27107
Voice: [phone]
FAX: [phone]
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.

Division of Water Resources
February 26, 2014
To: Corey Basinger
Regional Supervisor, Surface Water Protection, WSRO
Through: Cindy A. Moore
Supervisor, Aquatic Toxicology Unit
From: Carol Hollenkamp �fllcer,
Quality Assurance Aquatic Toxicology Unit
Subject: Whole effluent toxicity test results
Lexington Regional WWTP
NPDES Permit # NCO055786/001
Davidson County
The aquatic toxicity test using flow -proportional 24-hour composite samples of effluent discharged from
Lexington Regional WWTP has been completed. Lexington Regional WWTP has a permitted flow that is
6.5 million gallons per day (MGD) discharging into the Abbott's Creek arm of High Rock Lake (7Q10 of
6.70 CFS). Whole effluent samples were collected on February 4 and February 6 by Jenifer Carter and
facility representative Tamika Wardlow for use in a chronic Ceriodaphnia dubia pass/fail toxicity test. The
test using these samples resulted in a pass. Toxicity information follows.
Test Type
Test Concentrations
Test Result
Control Survival
Control Mean Reproduction
Test Treatment Survival
Treatment Mean Reproduction
First Sample pH
First Sample Conductivity
First Sample Total Residual Chlorine
Second Sample pH
Second Sample Conductivity
Second Sample Total Residual Chlorine
3-Brood Ceriodaphnia dubia pass/fail
60 %
Pass
100%
33.7
100%
27.3
7.41 SU
440 micromhos/cm
<0.10 mg/L
7.38 SU
436 micromhos/cm
<0.10 mg/L
Test results for the above samples indicate that the effluent would not be predicted to have water quality
impacts on receiving water. These samples were split and tested by Meritech, Inc. The chronic
Ceriodaphnia dubia pass/fail toxicity test run by Meritech, Inc. also resulted in a pass. Please contact us if
further effluent toxicity monitoring is desired. We may be reached at [phone].
Basin: YAD07
cc: Central Files
Jenifer Carter, WSRO
Aquatic Toxicology Branch Environmental Sciences Section

%11'0XLU1'1' Y aPl1 WLE UOLLl+'.CTION FORM page 1 of
Facility/Water Body r, eX( �, 4)GlM
ARO FRO MRO RRO WaRO WiRO W�
NPDES #utfall
# D
County
Si�✓�
Basin/Sub-basin
INCNC 0��
gf
Receivin Stream
Collector(s) (print) J ��� / 10lrv,i IG, W(ArG`Wo
Grab Sample ❑ Composite Sample � Composite Type:
❑ Constant Time/Constant Volume: samples/hour for
Flow Proportional
Sampling Equipment Used: ❑ DWQ Portable Sampler or B Facility's Sampler
Date Began Time Began . Date End Time End
Sampling -Site � �ue"kli7
Description
hours
Container: E 4L (1 gal) PE cubitainer DOther (describe) # of con rs l
Chlorinated; E3 Yes ❑ No Collected on Ice or in Refrigerated Sampler: Yes ❑ No Shipped on Ice: [Yes ❑ No
Method of Shipment: Courier [' Bus ❑ Staff ❑ Other (e�cplain):
bate/time of transfer to chinnPr nr rt,nriPr },nv �� A ', C /1 u, �.
Comments:
" S lit" sample, splitting lab name:
Did DM staff erform the lit? �'' Ct
S If NO, then did DW staff witness the lit?
d �t� iiid�✓ tlf �a..3Ffi '-:a' �f ,`vi '�0 -r r1 ,, T.f ".�i�':.. f"�'Yr':+, {� �'r'.
Relinquished by:
Received by:
Date:
Time:
Relinquished by:
Received by:
Date:
Time:
Relinquished by:
Received by:
Date:
Time:
Relinquished by:
Received by:
Date:
Time:
DWQ/Environmental Sciences Section
Aquatic Toxicology Unit Use street address only if shipping FedEx or UPS
1621 Mail Service Center Street address: 4401 Reedy Creek Road
Raleigh, NC 27699-1621 Raleigh, NC 27607
ESS Courier #: 520101 phone: [phone]

jlUX1C1TY SAMPLE COLLECTION FORM — page 2of
ATU Temperature Red
Sample No. - receipt °C on Ice
RECEIVED CONDUCTIVITY, TRC,
date mhos/cm - µmhos/cm mg/L
time I I date I I date
by time time
from
Lab
Comments:
Additional Notes (include date, time, signature, with notes):
Sampling instructions
I. SPLIT TESTS: Make sure the collector fills out, prints, and signs both the ATU sample collection form and the facility/contract
laboratory Chain of Custody (COC) form. If one person collects the sample, and another individual splits the sample, both should
sign the COC and the ATU sample collection form. All information on both COC and the ATU sample collection form should agree
(i.e., the date/time/signature for the collector, relinquished by/date/time, site description, pipe #, etc.) ATU uses only "true" splits for
certified laboratory evaluations. A split sample is a single, well mixed, equally divided, composite or grab sample, sent to different
laboratories to conduct whole effluent toxicity tests. A well mixed sample before each'/4 pour is critical to keep any effluent solids
from settling to the bottom. DWQ staff should be there to observe and. instruct the facility staff in the collection/split process to
insure the sample is handled correctly. Ideally the DWQ staff should perform the split. If extenuating circumstances (i.e. late sample
collection times, etc.) would make this' impractical, it should be noted on the sample collection form that DWQ staff was not present
at the time of the sample split. If the facility personnel collects and splits the sample, they need to sign the ATU sample collection
form as the collector, and also that they relinquished the sample to DWQ staff. DWQ staff will then need to sign and put the time
that they received the sample. Also, any additional information noted about the sample would be helpful to record on the ATU
sample collection form and the facility's COC (things such as color, smell, floating solids, suspended solids, etc.)
2. The person collecting the sample must sign the form for "Collector (signature)" at the bottom of page 1. Any subsequent transfer of
the sample must be recorded in the "Additional Sampler Handler records". In the "Collectors (print)" section at the top of page 1,
print the name of all collectors involved in the process. If the collector or additional sampler handler is a facility representative,
indicate this on the form.
3. With the adoption of the new chronic toxicity sampling schedule on January 1", 2011, samples may be collected earlier than 1000
hours. We do request notification, however, if a sample is to be collected earlier than 0600 hours. The maximum holding time for
chronic toxicity samples is 36 hours for first use and 72 hours from first use for test renewals. The maximum holding time is 36
hours for acute toicicity samples. The holding time for composite samples begins at the time of completion of the 24-hr composite.
4. Rinse sample container with sample before filling. Completely fill the sample with no air space.
5. Constant Time/Constant Volume composite samples should be at least 100 mLs volume per sample and collected at least every 20
minutes unless the detention time of the facility is >24 hours. More information on types of composites can be found in "NPDES
Permit Standard Conditions".
6. Sample collection material may be tempered glass, polyethylene, perfluorocarbon plastics including Teflon®, 304 or 316 stainless
steel, polypropylene, polyvinylchloride, Tygon® or silicone. All non-perfluorocarbon plastics should be discarded after use. DWQ
staff should not reuse non-perfluorocarbon plastics (polypropylene, LDPE, HDPE, polyviuylchloride, etc.) at different facilities for
collecting effluent samples. Tempered glass and perfluorocarbon (Teflon plastics may be reused after bioassay cleaning.
7. All samples should be iced during collection and transport to ensure a sample holding temperature of <6°C. The sample must be
received at <6°C or the sample will be invalid. Be sure to completely fill the coolers with ice and use large coolers whenever
possible. This is particularly crucial for shipping samples during warm weather months. Also, please notify ATU staff if samples
are being mailed in multiple coolers.

Q'0XtCITY SAMPLE COLLECTION FORM page 1 of ARO FRO MRO RRO WaRO WiRO WSRO 'y
Facility/Water Body
NPDES #
NC
0 0
,�
5
Outfall # U %
Countyha-t
VI
(,i of)Basin/Sub-basin
�i
10
T
Receiving Stream.7f�C)'S
Collector(s) (print) LJ al (�i`C4 V11 i I c, ( 1�/,,z;
Grab Sample ❑ Composite Sample R"' Composite Type:
❑ Constant Time/Constant Volume: samples/hour for
0 Flow Proportional
Sampling Equipment Used: 0 DWQ Portable Sampler or 2-facility's Sampler
Date Began Time Began
r a l- 5 / 1/- 1 F- : 0U
Sampling Site
Description
Date End Time End
_�2 / 6 / Iq 1 Ut/, :
hours
❑
Container: Ly"4L 1 gal) PE cubitainer Other (describe) # of containers l
Chlorinated; L 'es ElNo Collected on Ice or in Refrigerated Sampler: Des ❑ No Shipped on Ice:LRes [INo
Method of Shipment: Courier EBus ❑ Staff ❑ Other (explain):
Date/time of transfer to shipper or courier box: (o ZI 41 / • '
Comments: AmL,1 ''1 G' 1 �_l aa1 / ! '. f Z' a,
A ' le •, 0VI /1 5,i kle eF
'Split" Sample, SgUt—dng lab name: 2 �'Gt
F
Did DWO staff perform the lit? eS' /�✓ , %/ /(� S 4 41 If NO, then did Dn staff witness the
lit?
SSignature� - - Z, Q:Z72:-- / Date
Additional sdmnle anther rernrrle
Relinquished by:
Received. by:
Date:
Time:
Relin uished by:
Received by:
Date:
Time:
Relinquished by:
Received by:
Date:
Time:
Relinquished by:
Received b :
Date:
Time:
DWQ/Environmental Sciences Section
Aquatic Toxicology Unit
1621 Mail Service Center
Raleigh, NC 27699-1621
ESS Courier #: 520101
Use street address only if shipping FedEx or UPS
Street address: 4401 Reedy Creek Road
Raleigh, NC 27607
phone: [phone]
�Y�

- rrOMCITY SAMPLE COLLECTION FORM — page 2of
ATU Temperature Red
Sample No. @ recei t, °C on Ice
RECEIVED CONDUCTIVITY, TRC,
date mhos/cm - µmhos/cm mg/L
time date date
by I I time I I time
from I I by I I by
Lab
Comments:
Additional Notes (include date, time, signature, with notes):
Sampling instructions
1. SPLIT TESTS: Make sure the collector fills out, prints, and signs both the ATU sample collection form and the facility/contract
laboratory Chain of Custody (COC) form. If one person collects the sample, and another individual splits the sample, both should
sign the COC and the ATU sample collection form. All information on both COC and the ATU sample collection form should agree
(i.e., the date/time/signature for the collector, relinquished by/date/time, site description, pipe #, etc.) ATU uses only "hue" splits for
certified laboratory evaluations. A split sample is a single, well muted, equally divided, composite or grab sample, sent to different
laboratories to conduct whole effluent toxicity tests. A well mixed sample before each V4 pour is critical to keep any effluent solids
from settling to the bottom. DWQ staff should be there to observe and. instruct the facility staff in the collection/split process to
insure the sample is handled correctly. Ideally the DWQ staff should perform the split. If extenuating circumstances (i.e. late sample
collection times, etc.) would make this' impractical, it should be noted on the sample collection form that DWQ staff was not present
at the time of the sample split If the facility personnel collects and splits the sample, they need to sign the ATU sample collection
form as the collector, and also that they relinquished the sample to DWQ staff. DWQ staff will then need to sign and put the time
that they received the sample. Also, any additional information noted about the sample would be helpful to record on the ATU
sample collection form and the facility's COC (things such as color, smell, floating solids, suspended solids, etc.)
2. The person collecting the sample must sign the form for "Collector (signature)" at the bottom of page 1. Any subsequent transfer of
the sample must be recorded in the "Additional Sampler Handler records". In the "Collectors (print)" section at the top of page 1,
print the name of all collectors involved in the process. If the collector or additional sampler handler is a facility representative,
indicate this on the form.
3. With the adoption of the new chronic toxicity sampling schedule on January 1". 2011, samples may be collected earlier than 1000
hours. We do request notification, however,, if a sample is to be collected earlier than 0600 hours. The maximum holding time for
chronic toxicity samples is 36 hours for first use and 72 hours from first use for test renewals. The maximum holding time is 36
hours for acute toxicity samples. The holding time for composite samples begins at the time of completion of the 24-hr composite.
4. Rinse sample container with sample before filling. Completely fill the sample with no air space.
5. Constant Time/Constant Volume composite samples should be at least 100 mLs volume per sample and collected at least every 20
minutes unless the detention time of the facility is >24 hours. More information on types of composites can be found in "NPDES
Permit Standard Conditions".
6. Sample collection material may be tempered glass, polyethylene, perfluorocarbon plastics including Teflon®, 304 or 316 stainless
steel, polypropylene, polyvinylchloride, Tygoe, or silicone. All non-perfluorocarbon plastics should be discarded after use. DWQ
staff should not reuse non-perfluorocarbon plastics (polypropylene, LDPE, BDPE, polyvinylchloride, etc.) at different facilities for
collecting effluent samples. Tempered glass and perfluorocarbon (Teflon plastics may be reused after bioassay cleaning.
7. All samples should be iced during collection and transport to ensure a sample holding temperature of <6°C. The sample must be
received at <6°C or the sample will be invalid. Be sure to completely fill the coolers with ice and use large coolers whenever
possible. This is particularly crucial for shipping samples during warm weather months. Also, please notify ATU staff if samples
are being mailed in multiple coolers.

NCDEENR
North Carolina Department of Environment and Natural Resources
Division of Water Resources
Water Quality Regional Operations
Pat McCrory
Thomas A. Reeder
Governor
Director
March 3, 2014
City of Lexington
Attn: Mr. Roger Spach
28 W. Center Street
Lexington, NC 27292
SUBJECT: NOTICE OF VIOLATION: NOV-201.4-PC-0046
Compliance Evaluation Inspection
Lexington Regional WWTP
NPDES Permit No. NCO055786
Davidson County
Dear Mr. Spach:
John E. Skvarla, III
Secretary
On February 25, 2014, Jenifer Carter of the Winston-Salem Regional Office conducted a Compliance
Evaluation Inspection at the City of Lexington Regional Wastewater Treatment Plant. Mr. Joseph C. Shaffer,
ORC, was present during the inspection. The inspection consisted of two parts: an on -site inspection of the
treatment facility and a review of facility files and self -monitoring data. The following is a summary of the
findings from the inspection:
• Lab data correlates correctly with data on the submitted Discharge Monitoring Reports.
• ORC visitation and maintenance logs were available for review.
• The primary clarifiers, trickling filters and anaerobic digesters are no longer used. The digesters are utilized
for sludge storage only.
• Trash is insufficiently screened at the head of the plant and, because of this, the City has plans to install a
new finer bar screen.
• Due to insufficient screening of trash, plant staff had installed screens throughout the plant to catch the
floating debris, and to prevent it from reaching surface waters. Staff is supposed to remove the debris caught
by these screens regularly. Unfortunately, during the inspection, heavy trash build-up was observed at all the
designated clean -out points, as well as being discharged into surface waters. Due to these observations, the
Lexington WWTP is in violation for the following:
l . Discharge of floating solids to Abbotts Creek (Class WS-V & B) a violation of the permit section Part I
Section A(D.
2. Failure to properly operate and maintain all facilities and systems of treatment and control which are
installed or used by the Permittee to achieve compliance with the condition of the permit as per the
permit Part II Section C (2).
North Carolina Division of Water Resources, Winston-Salem Regional Office
Location: 585 Waughtown Street, Winston-Salem, NC 27107
Phone: [phone] Fax: [phone] Customer Service:1-877-623-6748
Internet: hftp://www.ncwater.org
continued on reverse...
onr t NhCarolina
Naturally
An Equal Opportunity 1 Affirmative Action Employer

A follow-up visit the next day revealed that most of the trash had been removed throughout the plant, though
the center wells, or `hubs', of the secondary clarifiers had not been cleaned out, and some trash was still making
its way to the end of the discharge pipe into surface water. Please reply to this letter within thirty (30) days,
stating what corrective actions have been taken to ensure that proper operations & maintenance be
performed in the future. Include a timeline for the installation of the new bar screen.
These violations and any future violations can be subject to a civil penalty assessment of up to $25,000.00 per
day per violation. Should you have any questions please contact Jenifer Carter in our Winston-Salem Regional
Office at [phone].
Sincerely,
W. Corey Basinger
Regional Supervisor
Water Quality Regional Operations Section
Division of Water Resources
attachment
cc: Joseph C. Shaffer, ORC (same address)
SWP-Central Files
OMNw-' el

United States Environmental Protection Agency
Form Approved.
EPA Washington, D.C. 20460
OMB No. 2040-0057
Approval expires 8-31-98
Section A: National Data System Coding (i.e., PCS)
Transaction Code NPDES yr/mo/day Inspection Type Inspector Fac Type
1 LN I 2 I s 31 NCO055786 111 121 14/02/25 117 181 r• l 191 c I 201 I
U !J = ! lJ
Remarks
21111111111111
1111111111111111 111111111111 IIII 11I6
Inspection Work Days Facility Self -Monitoring Evaluation Rating 61 QA — ------------ Reserved---- -----
671 169 70I 2 I 711 N I 72 L N I 73I '' 74 751 I I I I I I 180
u 1� W
Section B: Facility Data
Name and Location of Facility Inspected (For Industrial Users discharging to POTW, also include
POTW name and NPDES permit Number)
Entry Time/Date
Permit Effective Date
Lexington Regional WWTP
10:00 AM 14/02/25
09/08/01
Exit Time/Date
Permit Expiration Date
500 Glendale Rd
Lexington NC 27292
01:00 PM 14/02/25
14/04/30
Name(s) of Onsite Representative(s)/Titles(s)/Phone and Fax Number(s)
Other Facility Data
///
Joseph Charles Shaffer//336-357-5090 /
Name, Address of Responsible Official/Title/Phone and Fax Number
Contacted
Roger Allen Spach,28 W Center St Lexington NC 272923099//336-248-3970/3362493584 No
Section C: Areas Evaluated During Inspection (Check only those areas evaluated)
Permit ■ Flow Measurement Operations & Maintenance Records/Reports
Self -Monitoring Program 0 Sludge Handling Disposal Facility Site Review Effluent/Receiving Waters
Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary)
(See attachment summary)
Name(s) and Signature(s) of Inspector(s) Agency/Office/Phone and Fax Numbers Date
Jenifeerr Carter % WSRO WQ//336-771-5000/ 7
SignaattuureAof Management Q A Reviewer Agency/Office/Phone and Fax Numbers Date
EPA Form 3560-3 (Rev 9-94) Previous editions are obsolete.
Page # 1

NPDES yr/mo/day Inspection Type 1
3� NCO055786 I11 12, 14/02/25 117 18' _'
Section D: Summary of Finding/Comments (Attach additionallssheets of narrative and checklists as necessary)
The plant is in violation for inproper maintenance, and for discharge of solids to surface waters.
Page # 2

Permit: NCO055786
Inspection Date: 02/25/2014
Owner - Facility: Lexington Regional WWTP
Inspection Type: Compliance Evaluation
Permit
(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?
Is access to the plant site restricted to the general public?
Is the inspector granted access to all areas for inspection?
Comment: Primary Clarifiers no longer used. Trickling filters being dismantled.
Anaerobic digesters now serve as sludge holding tanks only.
Record Keeping
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 DMRs?
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?
(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?
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?
Facility has copy of previous year's Annual Report on file for review?
Comment:
Influent Sampling
# Is composite sampling flow proportional?
Yes No NA NE
nn■n
Page # 3

Permit: NCO055786 Owner - Facility: Lexington Regional WWTP
Inspection Date: 02/25/2014 Inspection Type: Compliance Evaluation
Influent Sampling Yes No NA NE
Is sample collected above side streams? ■ ❑ ❑ ❑
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)?
■
❑ ❑
❑
Is sampling performed according to the permit?
■
❑ ❑
❑
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?
■
❑ ❑
❑
# 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)?
■
❑ ❑
❑
Comment:
Flow Measurement - Influent
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:
Flow Measurement - Effluent
Yes No NA
NE
# Is flow meter used for reporting?
0
❑ ❑
❑
Is flow meter calibrated annually?
■
❑ ❑
❑
Is the flow meter operational?
■
❑ ❑
❑
(if units are separated) Does the chart recorder match the flow meter?
❑
❑ ■
❑
Comment: Have been using effluent flow for reporting since October 2013. Last
calibrated on 1/9/2014.
Operations & Maintenance Yes No NA NE
Is the plant generally clean with acceptable housekeeping? ❑ ■ ❑ ❑
Does the facility analyze process control parameters, for ex: MLSS, MCRT, Settleable Solids, pH, DO, Sludge ■ ❑ 0 ❑
Judge, and other that are applicable?
Page # 4

Permit: NCO055786
Inspection Date: 02/25/2014
Owner- Facility: Lexington Regional WWTP
Inspection Type: Compliance Evaluation
Operations & Maintenance Yes No NA NE
Comment: Trash has accumlated throughout the plant due to lack of maintenance,
with some of it was being discharged to surface waters during the inspection.
Maintenance logs for the months of January and February notate trash removal, other
than at the conveyer belt and the headworks, on only one day (2/15/2014).
Type of bar screen
a.Manual
b.Mechanical
Are the bars adequately screening debris? ❑ E ❑ ❑
Is the screen free of excessive debris? ❑ 0 ❑ ❑
Is disposal of screening in compliance? 0 ❑ ❑
Is the unit in good condition? 0 ❑ Q
Comment: The screen in place is not adequate to keep trash out of the plant. Screens
have been installed at various stages along the treatment train to catch trash and have
to be cleared by plant staff regularly to keep trash from leaving the plant. A new finer
screen is said to be scheduled for delivery in the fall,
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?
0
❑ ❑
❑
Are all pumps present?
0
❑ ❑
❑
Are all pumps operable?
0
❑ ❑
❑
Are float controls operable?
0
❑ ❑
❑
Is SCADA telemetry available and operational?
❑
❑ 0
❑
Is audible and visual alarm available and operational?
❑
Comment:
Grit Removal
Yes No NA
NE
Type of grit removal
a.Manual
❑
b.Mechanical
Is the grit free of excessive organic matter?
Q Q
❑
Is the grit free of excessive odor?
❑ ❑
❑
Page # 5

Permit: NC0055786 Owner - Facility: Lexington Regional WWrP
Inspection Date: 02/25/2014 Inspection Type: Compliance Evaluation
Grit Removal Yes No NA NE
# Is disposal of grit in compliance? ■ ❑ ❑ ❑
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?
❑
❑ ■
n
Is the site free of excessive floating sludge?
n
n ■
❑
Is the drive unit operational?
❑
❑ ■
❑
Is the sludge blanket level acceptable?
❑
❑ ■
❑
Is the sludge blanket level acceptable? (Approximately Y. of the sidewall depth)
❑
❑ ■
❑
Comment: No longer used.
Trickling Filter
Yes No NA
NE
Is the filter free of ponding?
❑
❑ ■
❑
Is the filter free of leaks at the center column of fiilter'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?
❑
n ■
❑
Are the filter's distribution arms orifices free of clogging?
❑
❑ ■
❑
Is the filter free of excessive filter flies, worms or snails?
❑
❑ ■
❑
Comment: no longer used, and in the process of having media removed during the
inspection.
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? ■ ❑ ❑ ❑
Page # 6

Permit: NCO055786 Owner - Facility: Lexington Regional WWTP
Inspection Date: 02/25/2014 Inspection Ty
pe: ype: Compliance Evaluation
Aeration Basins Yes No NA NE
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? 00110
Is the DO level acceptable?(1.0 to 3.0 mg/1) ■ ❑ ❑ ❑
Comment: Aeration Basins used for BNR and are utilized to remove Phophorus, as
required by the permit.
Nutrient Removal
Yes
No NA
NE
# Is total nitrogen removal required?
1100
❑
# Is total phosphorous removal required?
0013
❑
Type
Biological
# Is chemical feed required to sustain process?
❑
❑ ❑
❑
Is nutrient removal process operating properly?
■
❑ ❑
❑
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?
■
0 ❑
❑
Is the return rate acceptable (low turbulence)?
■
Cl ❑
❑
Is the overflow clear of excessive solids/pin floc?
❑
■ ❑
❑
Is the sludge blanket level acceptable? (Approximately''/. of the sidewall depth)
■
❑ ❑
❑
Comment: A lot of trash was built-up in the centerwells, floating in the clarifiers and
being discharged from the clarifiers. Some floating sludge/pin floc also noted. Sludge
depth measured approx. 6 inches during the inspection. Mr. Shaffer said that his staff is
supposed to clean the trash out approx. every two weeks, which is clearly not often
enough.
Lagoons Yes No NA NE
Page # 7

Permit: NC0055786 Owner - Facility: Lexington Regional WWTP
Inspection Date: 02/26/2014 Inspection Type: Compliance Evaluation
Lagoons Yes No NA NE
Type of lagoons?
# Number of lagoons in operation at time of visit? 2
Are lagoons operated in? Parallel
# Is a re -circulation line present?
■
❑ ❑ ❑
Is lagoon free of excessive floating materials?
■
❑ ❑ ❑
# Are baffles between ponds or effluent baffles adjustable?
❑
❑ ■ ❑
Are dike slopes clear of woody vegetation?
■
❑ ❑ ❑
Are weeds controlled around the edge of the lagoon?
■
❑ ❑ ❑
Are dikes free of seepage?
■
❑ ❑ ❑
Are dikes free of erosion?
■
❑ ❑ ❑
Are dikes free of burrowing animals?
■
❑ ❑ ❑
# Has the sludge blanket in the lagoon (s) been measured periodically in multiple locations?
❑
❑ ■ ❑
# If excessive algae is present, has barley straw been used to help control the growth?
❑
❑ ■ ❑
Is the lagoon surface free of weeds?
■
❑ ❑ ❑
Is the lagoon free of short circuiting?
■
❑ ❑ ❑
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: A lot of trash accumulated at screens installed within the chlorine contact
chambers for the purpose of catching any trash that has made it to this point. It was
apparent that staff has not kept up with trash removal. Trash cans on both side of the
contact chambers were almost empty, and trash was floating over the screens and
exiting the plant.
De -chlorination Yes No NA NE
Type of system ? Liquid
Is the feed ratio proportional to chlorine amount (1 to 1)? ■ ❑ ❑ ❑
Page # 8

Permit: NC0055786 Owner - Facility: Lexington Regional WWTP
Inspection Date: 02/25/2014 Inspection Type: Compliance Evaluation
De -chlorination Yes No NA NE
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:
Solids Handling Equipment
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?
Comment: The City uses a separte composting facility and land application for sludge
removal.
Anaerobic Digester
Type of operation:
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?
Comment: Now utilized for sludge holding only.
Effluent Pipe
Is right of way to the outfall properly maintained?
Are the receiving water free of foam other than trace amounts and other debris?
❑ ❑ ■ ❑
01100
Yes No NA NE
Yes No NA NE
Page # 9

Permit: NCO055786 Owner - Facility: Lexington Regional WWTP
Inspection Date: 02/25/2014 Inspection Type: Compliance Evaluation
Effluent Pipe Yes No NA NE
If effluent (diffuser pipes are required) are they operating properly? ❑ ❑ ❑ ❑
Comment: Trash was observed exiting the discharge pipe into surface waters during
the inspection.
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? ■ ❑ ❑ ❑
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? ■ ❑ ❑ ❑
Comment: The generator comes on automaticlly during power failures, though if a
storm is expected, Mr. Shaffer says that the generator is turned on manually to avoid
repetitive on/off cycles. It is tested under load at least every 6 months, according to Mr.
Shaffer. Snelling Oil Co. provides fuel for the generator.
Page # 10

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DMR Review Record
Facility: lU/U Permit No.:IV( D1)55 7 Pipe No.: /) (`)/ MonthNear: e,(5 Zol 7
Monthly Average Violations
Parameter
Permit Limit DMR Value % Over Limit Action
Weeklv/Daily Violations
Date Parameter Permit Limit Limit Type DMR Value % Over Limit Action
Monitoring Frequency Violations
Date Parameter Permit Frequency Values Reported # of Violations Action
2 r T x weeely
Other Violationsl$taff Remarks:
/VUV S5 ✓C'Cj 74�r .Tiny 201? AM177 tn, 4 f%1 qlA�/�,,,�/y cif d ja �-,C/hq
0�� s�y5 lAh-'CQS
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ime r
>upervisor Remarks:
Completed by: ), ( f cv-
Assistant Regional
Supervisor Sign Off:
Regional Supervisor Sign
Off:
Date:
Date:
Date:

Carter, Jenifer
From:
Carter, Jenifer
Sent:
Thursday, February 27, 2014 4:36 PM
To:
'Roger A. Spach'
Subject:
RE: NOV
I guess I won't be getting any Christmas cards from staff at the plant this year. Thanks for shaking things up a little. It is
easy to get complacent when doing the same thing day in and day out.
Jenifer
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NC DENR Winston-Salem Regional Office
Division of Water Resources
585 Waughtown Street
Winston-Salem, NC 27107
Voice: [phone]
FAX: [phone]
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.
From: Roger A. Spach [ma iIto: RASpach(c LexingtonNC.gov]
Sent: Thursday, February 27, 2014 3:53 PM
To: Carter, Jenifer
Subject: RE: NOV
I think that Corey is being more than kind. Thank him for me.
I'm going to retire in the next year or so and am using this as a learning experience for Joe. He's just too laid back. If
Cupp was still in charge, this would not have happened. Joe does a lot of things right, but this is his Achilles heel. Cupp
did a lot of things right, but working with employees was his downfall.
Joe is issuing, in writing, to each of his folks assigned areas to take care of. These areas are to be inspected by him
weekly (at first) and the employees will receive a rating on this inspection. He was supposed to do this several months
ago and being laid back or lazy hadn't got around to it. This was one of the best things that Cupp did. They hated him
for it, but there was no challenge at evaluation time. Joe tends to backslide, but I'll stay in his butt for a while.
I'll forward your letter to Joe (without these comments). I've already told him to expect white glove inspections and
unannounced inspections for some time in the future. (When you showed up with the camera unannounced, that put
the fear of God in him.)
The floating stuff has been a concern since we put the BNR system into operation and bypassed the primary
clarifiers. It's taken me this long to get the money together (about $200,000) to get a fine screen. I'm going to scrounge
up about another $20K in this budget instead of waiting until the next budget like I planned to get some of the things

that go with the installation (backwash pump, concrete work, etc) and have as much stuff in place when the thing finally
arrives.
From: Carter, Jenifer[mailto:[e-mail]]
Sent: Thursday, February 27, 2014 3:19 PM
To: Roger A. Spach; Joseph Shaffer
Subject: NOV
Roger and Joe,
I wanted to give you both a heads up. Since the trash was under control during the last inspection (even though three
years ago it was not), Corey decided he wants to send a Notice of Violation only, with no intent to enforce (i.e. no
penalties) at this time. I think he is being kind.
The NOV will be for failure to maintain/operate the plant properly and for floating solids in the creek, a violation of the
permit.
We would like to see cleaning efforts become proactive vs. reactive... in other words, operators should not be waiting
until trash builds up to anywhere near the point of getting in the creek before it is scooped out. Every two weeks-ish is
clearly not enough. I see no reason why it could not be a part of the daily routine, with special attention being paid to
the plant during/after high flows (assuming it is safe, of course). High flows alone are not an excuse for trash getting in
the stream, barring an unusually large rain event... maybe. Until the new mechanical screen is installed, every effort
needs to be made to keep trash out of the creek.
Record keeping also needs to improve. If trash is observed in the final clarifiers, the chlorine contact chambers or,
heaven forbid, beyond that, then that should be noted, every day if necessary. I looked at two months of records, and
saw only one notation about trash being cleaned out anywhere other than rags being removed from the conveyer, at
the head of the plant. The outfall should be a part of the daily checklist of things to observe, if it isn't already.
Hopefully, this will serve as a wake-up call. Corey might not be so forgiving if I or another inspector observes the same
trash problem during a future inspection or unannounced visit.
Let me know if you have any questions.
Jenifer
Before printing this email. please consider your budget and the environment.
If you must print. please print only what you need and save ink with the free Eco-Font.
NC DENR Winston-Salem Regional Office
Division of Water Resources
585 Waughtown Street
Winston-Salem, NC 27107
Voice: [phone]
FAX: [phone]
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.

Carter, Jenifer
From:
Roger A. Spach <[e-mail]>
Sent:
Monday, January 13, 2014 9:43 AM
To:
Carter, Jenifer
Cc:
Joseph Shaffer, Rick Comer
Subject:
bypass of treatment unit - NCO055786
We bypassed our grit chamber for about a day and a half because of excess sand from heavy rain causing flooding on
Abbotts Creek. The grit collector was overloaded and jammed. None of this went into the creek. The sand from this
bypass will end up in our aeration tanks and we will clean it at a later time.
16
14
4
2
USGS 02121500 RBBOTTS CREEK AT LEXINGTON, NC
Jan Jan Jan Jan Jan Jan Jan Jan
06 07 08 09 10 11 12 13
2014 2014 2614 2014 2014 2014 2014 2014
---- Provisional Data Subject to Revision ----
- Gage height
— National Heather Service Floodstage
From: Joseph Shaffer
Sent: Monday, January 13, 2014 9:19 AM
To: Roger A. Spach
Subject: grit chamber
The grit chamber was out from 4:30PM Sunday until 9:20AM Monday (today).
It's up and running now..
1

City of Lexington, NC
Department of Water Resources
January 10, 2014
System Performance Annual Report - 2013
Lexington Regional WWTP
I. General Information:
(A) Name of Regulated Entity: Lexington Regional WWTP
(B) Responsible person: Roger Spach, Water Resources Superintendent
City Of Lexingtton
28 West Center Street
Lexington, NC 27292
(C) Applicable Permit: NC0055786
(D) Description of treatment process: The Lexington Regional WWTP is a wastewater
treatment facility consisting of influent pump stations; flow measurement; mechanical
bar screens,• grit collection,• primary clarifiers,• roughing filters-, aeration basins;
secondary clarifiers,• post aeration basins; chlorination contact chamber; anaerobic
digesters,• and sludge drhg beds with a compostin fg acility located at 500 Glendale Road
south of Lexington in Davidson Coup y. The plant discharges into the Abbott's Creek
arm of High Rock Lake which is classified Class WS-III and B waters in the Yadkin -Pee
Dee River Basin.
II. Performance:
(A) Description of overall 12 month performance: This treatment system performed in
full compliance except for two violations of its allowable effluent ammonia
concentration.
(B) Violations:
(1) Permit Limit Violations: 2
(2) Monitoring and Reporting Violations: none
(3) Illegal Bypasses of Treatment Facilities: none
(4) Sanitary Sewer Overflows: none

(continued)
(C) Known Environmental Impact of Violations: none
Description of corrective measures taken to correct violations or deficiencies:
The violations were due to the failure of our alum storage tank. This dumped about
6,000 gallons of liquid alum into the aeration basins. The effect of this ran its course
through normal operation of the treatment plant
III. Notification: This document is available for review by the public at the Water Resources
Administrative Office at 711 Talbert Boulevard. Public notification of the availability of this
document will be made by notice in the local news paper The Dispatch in February, by
advertisement on the City's cable access channel, and by presentation to the Lexington Utilities
Commission on February 3, 2014. Notice of this document' s availability will be mailed to all of
the City of Lexington's utility customers in February of 2014.
IV. Certification:
The information in this report was prepared by me and is accurate and complete to the
best of my knowledge:
Water Resources Superintendent date:
Rogel Spao

U�O� �O
City of Lexington, NC
Department of Water Resources
November 22, 2013
Mr. Charles Weaver
NCDENR/DWR/Point Source Branch
1617 Mail Service Center
Raleigh, NC 27699-1617
Subject: NPDES Permit — NCO055786
Lexington Regional WWTP
Davidson County
Application for Permit Renewal — additional attachment
Dear Mr. Weaver:
RECEIVED
N.C.Dept. of ENR
f
NOV" 2 5 2013
Winston-Salem
Regional Office
By this letter and attachments, I am forwarding three copies of the remaining Effluent
Toxicity Report Form — Chronic Fathead Minnow Multi -Concentration Test required for
submission of our application for renewal
Please forward comments and questions to my attention at 336-248-3970 or to
RASpach@lexin tg onnc.gov.
Sincerely
Roger Spach,
Water Resources Superintendent
CC: Rick Comer
Joe Shaffer
Jennifer Carter

Effluent Toxicity Report Form -Chronic Fathead Minnow Multi -Concentration Test Date:11/189013
Facility: Lexington NPDES # NC00 55786 Pipe #: 001 County: Davidson
Laboratory: Meritech, Inc. Comments
x
�Siignatur pe for i sponsible Charge
Signature of Laboratory Supervisor
MAIL ORIGINAL TO: Environmental Sciences Branch
Division of Water Quality
NC DENR
1621 Mail Service Center
Raleigh, NC 27699-1621
Test Initiation Date/Time 11/5/2013 4:00 PM Avg Wt/Surv. Control 0.679
% Eff. Repl. 1 2 3 4
Fc-on't-ro-iiI Surviving #
Original #
Wt/original (mg)
10
10
9
10
10
10
10
10
0.681
0.609
0.710
0.639
F_15­1 Surviving #
% Survival 100.0
10
10
10
10
Original #
10
10
10
10
0.618
0.741
0.581
0.660
% SurvivalF 97.5
Avg Wt (mg)].0.660 1 Hatch Date: 11/4113
Hatch Time: 3:00 pm CT
30 Surviving #
% Survival 100.0
10
10
10
1
Original #
Wt/original (mg)
Avg Wt (mg) 0.626
60 Surviving #
% Survival 100.0
Original #
Wt/original (mg)
Avg Wt (mg) 0.633
80 Surviving #
% Survival 100.0
Original #
Wt/original (mg)
Avg Wt (mg) 0.629
100 Surviving #
% Survival 100.0
Original #
Wt/original (mg)
Avg Wt (mg) 0.635
Water Quality Data
Day
Control
0
1
2
3
4 5 6
pH (SU) Init/Fin
High Concentration
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)
Term. at Receipt (°C)
0
10 10 10 10
0.610 0.705 0.602 0.587
10 10 10 10
10 10 10 10
0.599 0.658 0.666 0.610
10 10 10 10
10 10 10 10
0.605 0.624 0.654 0.633
10 10 10 10
10 10 10 10
0.667 0.618 0.627 0.628
8.17 7.98
10 10 10 10
10 10 10 10
0.599 0.658 0.666 0.610
10 10 10 10
10 10 10 10
0.605 0.624 0.654 0.633
10 10 10 10
10 10 10 10
0.667 0.618 0.627 0.628
8.17 7.98
10 10 10 10
10 10 10 10
0.605 0.624 0.654 0.633
10 10 10 10
10 10 10 10
0.667 0.618 0.627 0.628
8.17 7.98
10 10 10 10
10 10 10 10
0.667 0.618 0.627 0.628
8.17 7.98
8.17 7.98
8.16 7.74
0 1 2 3 4 5 6
7.70 / 7.86
7.71
17.55
7.66
/ 7.74
7.69
/ 7.66
7.99 / 7.89
7.84
/ 7.94
7.88
17.51
8.79 17.35
8.16
/ 5.81
8.64
/ 7.37
8.28
/ 7.76
7.98 / 7.39
7.85
17.62
8.29
16.40
25.0 / 25.3
24.7
/ 25.3
25.0
/ 24.3
24.5
/ 24.7
25.0 / 24.5
25.5
/ 25.0
24.4
124.5
1 2 3
11 /4/2013
11 /6/2013
11 /7l2013
24.00
24.00
24.00
70
62
66
56
59
57
440
426
435
<0.1
<0.1
<0.1
1.2
0.8
0.8
Dilution H2O Batch # T68 769 770
Hardness (mg/L.)46 44 46
Alkalinity (mg/L) 58 59 54
Conductivity (umhos/cm) 211 209 212
Test Organisms
f' Cultured In -House
r7p Outside Supplier
Survival
Growth Overall Result
Normal
ri'.
r, I ChV >100
Hom. Vac
r"'1:
ir-11,
NOEC
100
100
LOEC
>100
>100
ChV
>100
>100
Method
Steel's
Dunnet's
Slats
Survival
Growth
Conc.
Critical Calculated
Critical Calculated
15
10 20
2.41 0.3136
30
10 20
2.41 1.0854
60
10 20
2.41 0.8522
80
10 20
2.41 0.9889
100
10 20
2.41 0.7959
DWQ Form AT-5 (1/04)

A
I
Meritech, Inc.
Chronic Fathead Minnow Benchsheet
Transfer and Feeding Dates and Times
Client:
Lexington
# of Organisms per Chamber: 10
Start Date:
1115/13 Time:
l
NPDES
#: NCOOSS786
Test Vessel Size: 400 ml
End Date: 11/12/13 Time: 1 G0yel(.-
Initiated by:
Test Solution Volume: 250 ml
Date/Time
Fed:
11/5/13 �.'(,�/t�._
Temp. of Stock: 2 LI °C
T
Randomization: Yes No
Date/Time Born:
11/4/13 3:00 PM CT
# of Reps: 4
Incubator #:
Organism Source:
Aquatox, Inc.
Transferred by:
Fed by:
Date
Time Initials
Date Time 1
Initials
Time 2
Initials Time 3 Initial
Day 1
11/6
j
Day 0 11/ 5
Day 2
11/7
di�" 1�i�' , 6'�
Day 1 11/6
Day
11/8
I�l�bti =IL
Day 11/7 ffl l
'uJ,'�-
/_.!
Day 4
11/9
Day 3 11/8 (;i' (��'Lti'J
l�4U"
Day 5
10 11
/
b ✓"�CC�t—
Day 4 11 / 9 ? y.� ��
,�_
.v
>�1.�
-
Day
11/11
i
J ���L1u'' 1j�'"''
Day5 11/10
Day 11/11�,-
Test Termination Data:.. .
Initials/Signature:
End Date: 11 / 12/ 13
End Time: /6)L "U,
= Weekend, only 2 feedings needed

ENVIRONMENTAL LABORATORIES
A Oivisic>n of Water Technology and C<Dnrrofs. Inc -
Chemical and Physical Determinations
Client: Lexington WWTP NPDES#: NCO055786 Start Date: 11/5/13 Time:
Test Organism: Pimephales promelas Analyst(s): mer, MR, ST End Date: I I / 12/13 Time:.
Day
Concentration: control
0-1
1-2
2-3
3-4
4-5
5-6
6-7
Remarks
Soft Synthetic Feshwater
Batch
pH: Initial
55, 7
2-C
2
Fa C)
•41
Final
7
D.O. Initial
7 7
7 7q
Final
7?-1
Ti
'7� Iq
Temp.: Ini .t. ia
7
—6:
Final
Conductivity: Initial
> L
Final
Residual Chlorine:
Z-0,
Hardness:
Alkalinity:
Day
Concentration: 15%
0-1
1-2
2-3
3-4
4-5
5-6
6-7
Remarks
pH: Initial
Final
-7 Pi
D.O.: Initial
Final
2—
Temp.: Initial
'7
ii,
-7 (
7
j
L)
Final
-_7
Conductivity: Initial
Final
319
Residual Chlorine:
I
I
/ I
Z-r-'-, /
1
40,
4C,
Day
Concentration: 30%
0-1
1-2
2-3
3-4
4-5
5-6
6-7
Remarks
pH: Initial
U.,
'6
Final
2 7b
-T LV-
7 361
7'ct'
D.O.: Initial
7-W
S�o C,1
Ywj
Final
k
7
Temp.. Initial
z
J
Y
Final
Conductivity: Initial
L4
Final
0
Residual Chlorine:
Z-01

M,ER/ TiECH� /�V
_ A EN VIRON ME NTAL LABO RATORfES
o i ,on o• v,„r r@cnno"ovr wnd co., r.o,s,
Chemical and Physical Determinations
Client: Lexinton WWTP NPDES#: NCO055786 Start Date: 11/5/13
Test Organism: Pimephales promelas Analyst(s): mer, MR, ST End Date: 11/12/13
Day
Page 2 of 2
1
Time:
Time: I :i
Concentration: 60%
0-1
1-2
2-3
3-4
4-5
5-6
6-7
Remarks
pH: Initial
7, 0 `%
7, 6 5
15 "
yC8
'7,
Final
-%
i i
7. ? (
; ''
T�3
7, i j
`.,;&
D.O.: Initial
( Ci.
7 • L2,
�iC7
Final
T
,f
Temp.. Initial
z
? 4 q
Final
Z,5.0
�
Conductivity: Initial
C%,
-
� � =�.
✓�`
:� L�
1
Final
= '
,j ; ;%
7 `'i
^,i �,
i
3! .�
fi
Residual Chlorine:
Z-G
Dav
Concentration: 80%
0-1
1-2
2-3
3-4
4-5
5-6
6-7
Remarks
pH: Initial
-7.%
� Z,
_ . �'
Final
-7
73
D.O.: Initial�.t.
Z
Final
,
_ r73
-
Temp.. Initial
Final
-' '�. '
2
, �'
- �i .
j , 01
.5
Conductivity: Initial
";,)Cl
i
��- i
�4 �.
_' ✓ '
'�
:c- t >
Final
I
J
Residual Chlorine:
LC.,
f" 1 I
/-Z
4C,
Dav
Concentration: 100%
0-1
1-2
2-3
3-4
4-5
5-6
6-7
Remarks
pH: Initial
7,70
-3 , 7
�"
Final
7/ y
7,55-
%, H
D.O.. Initial
5 7 /
Final
i._�
. S" '
-7, 37
`? ,
.Z
c,
Temp.. Initial
Z S rJ
Z r.-
Final
Conductivity: Initial
�
-�'-� I
? Z
,�
=',
-"�
Final
Residual Chlorine:
Hardness:
--t
Alkalinity:
—`''

,
U���U����� INC...~~ ~ ' _-_' ', ....~
Mortality Data: Chronic Fathead Test
Client: Lexington WWTP NPDE8#: NCOX055786 Start Date: 11/5/13 Time:
Test Organism: Pimephales promelas Analyst(s): mer, MR, ST End Date: 11/12113 Time:
Concentration Control
Day
Rep#10
Rep#2 CIL
Rep#3__\��'_
Rep#4_`��_�
Concentration 15%
Day
Rep#1_\��__
Rep#2--1��--'
Rep#3___��__
(�
Rep#4__��__
y\
(�
Concentration 30%
Day
Rap#1 L/
U
R�#2��
Rep#3
Rep#4 "
Day Day
Day Day
Day pay
Day
Day Day
\ L.�
Day
Day
Day Day Day Day
Day
\J

v
MERITECN, INC.
Mortality Data: Chronic Fathead Test
Client: Lexinqton WWTP
NPDES#:
NCO055786
Start Date:
11/5/13
Time: r'
Test Organism: Pimephales
promelas
Analyst(s): mer, MR,
ST
End Date:
11/12/13
Time:
Concentration 60%
Day 0
Day 1
Day 2
Day 3
Day 4
Day 5
Day 6
Day 7
A
Rep #1
Rep #2 C%
'
`J
Rep #3
Rep #4
Concentration 80%
Day 0
Day 1
Day 2
Day 3
Day 4
Day 5
Day 6
Day 7
Rep #1
Rep #2
Rep #3 l.)
Rep #4
Concentration 100%
Day 0
Day 1
Day 2
Day 3
Day 4
Day 5
Day 6
Day 7
Rep
#1
Rep #2y
-
k/k_
Rep #3
Rep #4

MERITHCHF fric.
ENVIRONMENTAL LABORATORIES
Division of vvarer Technology and Controls, Inc.
FISH LARVAL SURVIVAL/GROWTH DATA SHEET
CHRONIC FATHEAD MINNOW
Facility: Lexington WWTP
NPIDES #: NCO055786
Date ofTest: 11/5/13
Initial weights taken on: by:
Final weights taken on:—E - by:
Page: 1 of 2
Outfall:
Organism: Pimephyles promelas
PAN WT.
PAN + ORG.
WT. OF ORG.
MEAN
CONC
REP
(Mg)
WT. (mg)
(Mg)
# ORG.
WT./ORG. (mg)
SURV %
A
7F)
16-
B
Sin s
0
C
D
�n
A
B
x
15%
C
-so
L
D
A
C
30%
B
C
5L\

J%-
-,
MERITECHO, IMC.
ENVIRONMENTAL LABORATORIES
Oivis;o, of Klare, Technology and C—rrof,, Inc.
FISH LARVAL SURVIVAL/GROWTH DATA SHEET
CHRONIC FATHEAD MINNOW
Facility: Lexington WWTP
NPIDES #: NCO055786
Date of Test: 11/5113
Initial weights taken on: 31 by:
Final weights taken on: I i - ` 1� - by:
Page: 2 of 2
Outfall:
Organism: Pimephales promela
PAN WT.
PAN + ORG.
WT. OF ORG.
[MEAN
CONC
REP
(Mg)
WT. (mg)
(Mg)
# ORG.
WTJORG. (mg)
SURV %
—A
—0
60%
B
C—i
C
L
D
U-J
—A
C
D
0�
A
B
100%
C
D

M ERITECH, INC. Meritech Sample ID #:
Bioassay Sample Chain of Qatodv
642 Tamco Rd, Reidsville NC 27320
Phone: [phone] Fax:[phone]
Toxicity Supervisor email: mike.reed(cbmeritech-labs.com Web Site: www.meritech-labs.com
CLIENT INFO MATION
Client: (� 1/ PO#:
Contact Person: ��� NPDES#: NC
Address: v Ls�� Phone:
City: Pipe #: Z /
County: - State: _(i Zip:
SAMPLE INFORMATION
Sample Site:
Sample Type: ❑ Grab D4 Composite # of containers: a'P
Sampling Time: Start Date: ///-// 3 StartTime: _7'00 AM PM
End Date: //1.Sf/3 End Time: X 0 a PM
*** SAMPLE CONTAINERS MUST BE COMPLETELY FULL (no airspace), CHILLED AND CQVERED WITH ICE ***
Collector's Name: Print: Signature:
TOXICITY TEST INFORMATION
Test Required: Chronic (7 days) Test Organism: Xperiodaphniadubla (water flea)
Acute (24-48 hours) (Pimepha/es promelas (fathead minnow)
❑ Mysidopsis bahia (shrimp)
IWC: % Test Concentrations (if multiple dilutions):
Comments:
Relinquished by:
Received by:
Relinquished by:
Received by:
Relinquished by:
Received by:
Relinquished by:
Received by:
SHIPPING INFORMATION
Date: %/ S / 3
Date: I
Date:
Date: %h�`j 3
r—
Date:
Date:
Date:
Date:
Sample Temperature (°C):
Time:-V
e)CJ
PM
Time:
O 6el
(2AR?
PM
Time:
✓��
AM
Pd!3•
Time:
3 0
AM
Time:
AM
(1
Time:
AM
PM
Time:
AM
PM
Time:
AM
PM
Method of Shipment: ❑ UPS ❑ Fed EX ❑ Meritech Pick-up ❑ Delivered ❑ Other
Samples shipped on Friday must be FedEx and must be clearly labeled for Saturday delivery, NO SIGNATURE REQUIRED *'
SAMPLE RECEIVING (Laboratory Use Only)
Relinquished by: r X�
Received by: G Date: � ` / bt % 1 Time: 1��1i� AM PM
Sample Temperatures (°C): 1 _2L / / / Sample Condition: 1 CGk
WHITE = Laboratory copy YELLOW = Client copy

MERITECH, INC. Meritech Sample ID #: 1�O 7 I J�
Bioassay Samvle Chain of Custody
642 Tamco Rd, Reidsville NC 27320
Phone: [phone] Fax:[phone]
Toxicity Supervisor email: mike.reedCd-meritech-labs com Web Site: www.meritech4abs.com
T
-- 3q
Client: PO#.
Contact Person: NPDES#: NC Ov�S
Address: Phone: (� 3 i—
City: � Y� Pipe #: (C��
County: l J t�sy I�j�jC� 1� State: �.— ( Zip: 7
SAMPLE INFORMATION
Sample Site: �l'fy, %'o Y�
Sample Type: ❑ Grab Composite # of containers:
Sampling Time: Start Date: ///G f/ 3 Start Time: 7•' e � PM
End Date: 17 /3 End Time: 7-'O r? AM PM
*�* SAMPLE CONTAINERS MUST BE COMPLETELY FULL (no air space), CHILLED AND COVERED WITH ICE •`*
Collectors Name: Print:_(( (,ciR ,G _s I!-�i�� s >- Signature:
TOXICITY TEST INFORMATION
Test Required: Chronic (7 days) Test Organism: Ceriodaphnia dubia (water flea)
❑ Acute (24-48 hours) Pimephales-promelas (fathead minnow)
r� ❑ Mysidopsis bahia (shrimp)
IWC: V °y0 Test Concentrations (if multiple dilutions):
Comments:
Relinquished by:
Received by:
Relinquished by:
Received by:
Relinquished by:
Received by:
Relinquished by.
Received by:
SHIPPING INFORMATION
Date: // 7 /3
Date: �-
Date:
Date:
Date:
v
Date:
Date:
Date:
Sample Temperature ()C):
Time:
Time:
'7- 'U U
wy
AM PM
AM PM
Time:
(3 10
AM
Time:
f ? / /1
AM lit J
Time: dd AM Ivi
Time: AM PM
Time:
Time:
Method of Shipment: ❑ UPS ❑ Fed EX ❑ Meritech Pick-up ❑ Delivered ❑ Other
AM PM
AM PM
** Samples shipped on Friday must be FedEx and must be clearly labeled for Saturday delivery, NO SIGNATURE REQUIRED **
SAMPLE RECEIVING (Laboratory Use Only)
Relinquished by:
Received by: Date: I tl I � Time: If)()_ AM PM
Sample Temperatures (°C): t1 S: / / Sample Condition:o
WHITE = Laboratory copy YELLOW =Client copy

MERITECH, INC. Meritech Sanple ID #: J�l
Bioassay Sample Chain of Custody
642 Tamco Rd, Reidsville NC 27320
Phone: [phone] Fax:[phone]
Tonicity Supervisor email: mike.reed(Mmeritech-labs.com Web Site: www,.meritech43bs,com
CLIENT INFORMATION
Client: cl 4—
Contact Person:__:
Address: t.J .so Cr Nr Q,
City:
County: �t Stater_ Zip:
SAMPLE INFORMATION
Sample Site:
Sample Type: ❑ Grab a
PO#:
NPDES#: NC 6 b S 5 10
Phone: 3�g, 3,5-�: --�V'S
Pipe #: 01
# of containers: .S,
7
Sampling Time: Start Date: Ir /3 StartTime: 7 •,�/C�7 AM PM
End Date: //ZS End Time: 7 i� AM PM
"* SAIKPLE CO TAUVERS IWUST BE COfr#PLETELY FULL (no air space), CHILLED ARD COVERED t't11TH ICE
Collector's Flame: Print ��,'// /�J�y ��✓ ��— Signature:
Test Required: Chronic (7 days)
❑ Acute (24-48 hours)
Comments:
Relinquished by:
Received by:
Relinquished by:
Received by:
Relinquished by:
Received by:
Relinquished by:
Received by:
TOXICITY TEST INFORMATION
Test Organism: N�Ceriodaphnia dubia (water flea)
Pimephales promelas (fathead minnow)
❑ Mysidopsis bahia (shrimp)
Test Concentrations (if multiple dilutions):
Date: Time: 7 7_i cP AM PNA,
Date: Time: "�-.03 6 PM
Date: l( Time: /,% AM
Date: �l..iv Time: AM M
Date: !i / `, Time: �s' . 64 AM PM
Date: iA. Time: AM PM
Date: Time: AM PM
Date: Time: AM. PM
Sample Temperature (°C):
Method of Shipment: ❑ UPS ❑ Fed EX ❑ Meritech Pick-up ❑ Delivered ❑ Other
" Samples shipped on Friday must be FedEx and must be clearly labeled for Saturday delivery, ESQ SIGNATURE REQUIRED *`
SAMPLE RECEIVING (Laboratory Use Only)
Relinquished by: ( �'1 r_ ; (•; i, r,'; ,
Received by: \ ` , ,, Date: ; / 5, ; , Time: A P
( I
Sample Temperatures (°C): : �1� / o c� % 0 . - / Sample Condition: <r
WHITE = Laborat:ory. copy YELLOW = CNent copy

J
Title: lexington - survival
File: lexsury Transform: NO TRANSFORMATION
Shapiro - Wilk's Test for Normality
----------------------------------------------------------------------------
D = 0.0075
W = 0.4651
Critical W = 0.8840 (alpha = 0.01 , N = 24)
W = 0.9160 (alpha = 0.05 , N = 24)
Data FAIL normality test (alpha = 0.01). Try another transformation.
Warning - The first three homogeneity tests are sensitive to non -normality
and should not be performed with this data as is.

Title: lexington - survival
File: lexsury Transform: NO TRANSFORMATION
Hartley's Test for Homogeneity of Variance
Bartlett's Test for Homogeneity of Variance
----------------------------------------------------------------------------
These two tests can not be performed because at least one group has
zero variance.
Data FAIL to meet homogeneity of variance assumption.
Additional transformations are useless.

Title:
lexington - survival
File:
lexsury
Transform:
NO
TRANSFORMATION
----------------------------------------------------------------------------
Steel's Many -One Rank
Test
- Ho:
Control<Treatment
MEAN IN
RANK
GRIT.
SIG
GROUP
-------------------------
IDENTIFICATION
ORIGINAL UNITS
SUM
VALUE
DF 0.05
1
control
-----------
0.9750
-------
------
----- ---
2
15
1.0000
20.00
10.00
4.00
3
30
1.0000
20.00
10.00
4.00
4
60
1.0000
20.00
10.00
4.00
5
80
1.0000
20.00
10.00
4.00
6
----------------------------------------------------------------------------
100
1.0000
20.00
10.00
4.00
Critical
values are 1 tailed
( k = 5 )

r
Title: lexington
File: lexington Transform: NO TRANSFORMATION
Shapiro - Wilk's Test for Normality
----------------------------------------------------------------------------
D = 0.0348
W = 0.9576
Critical W = 0.8840 (alpha = 0.01 , N = 24)
W = 0.9160 (alpha = 0.05 , N = 24)
Data PASS normality test (alpha = 0.01). Continue analysis.

Title: lexington
File: Lexington Transform: NO TRANSFORMATION
Bartlett's Test for Homogeneity of Variance
----------------------------------------------------------------------------
Calculated B1 statistic = 5.7443 (p-value = 0.3319)
Data PASS Bl homogeneity test at 0.01 level. Continue analysis.
----------------------------------------------------------------------------
Critical B = 15.0863 (alpha = 0.01, df = 5)
= 11.0705 (alpha = 0.05, df = 5)

i
Title: lexington
File: lexington Transform: NO TRANSFORMATION
ANOVA Table
----------------------------------------------------------------------------
SOURCE DF SS MS F
----------------------------------------------------------------------------
Between 5 0.0035 0.0007 0.3597
Within (Error) 18 0.0348 0.0019
----------------------------------------------------------------------------
Total 23 0.0383
----------------------------------------------------------------------------
(p-value = 0.8693)
Critical F = 4.2479 (alpha = 0.01, df = 5,18)
= 2.7729 (alpha = 0.05, df = 5,18)
Since F < Critical F FAIL TO REJECT Ho: All equal (alpha = 0.05)

Title: lexington
File: lexington
Transform:
NO TRANSFORMATION
Dunnett's Test -
----------------------------------------------------------------------
TABLE 1 OF 2
Ho:Control<Treatment
TRANSFORMED
MEAN CALCULATED IN
SIG
GROUP
IDENTIFICATION
--------------------
MEAN
ORIGINAL UNITS
T STAT 0.05
1
control
-----------
0.6597
------------------
0.6597
------ ---
2
15
0.6500
0.6500
0.3136
3
30
0.6260
0.6260
1.0854
4
60
0.6333
0.6333
0.8522
5
80
0.6290
0.6290
0.9889
6
----------------------------------------------------------------------------
100
0.6350
0.6350
0.7959
Dunnett critical value = 2.4100 (1 Tailed,
alpha = 0.05, df =
5,18)
Title: lexington
File: lexington
Transform:
NO TRANSFORMATION
----------------------------------------------------------------------------
Dunnett's Test -
TABLE 2
OF 2 Ho:Control<Treatment
NUM OF
MIN SIG DIFF
o OF
DIFFERENCE
GROUP
-----
IDENTIFICATION
--------------------
REPS
-------
(IN ORIG. UNITS)
CONTROL
FROM CONTROL
1
control
4
----------------
-------
------------
2
15
4
0.0749
11.4
0.0097
3
30
4
0.0749
11.4
0.0337
4
60
4
0.0749
11.4
0.0265
5
80
4
0.0749
11.4
0.0307
6
----------------------------------------------------------------------------
100
4
0.0749
11.4
0.0247

City of Lexington, NC
Department of Water Resources
October 28, 2013
Mr. Charles Weaver
NCDENR/DWR/Point Source Branch
1617 Mail Service Center
Raleigh, NC 27699-1617
Subject: NPDES Permit — NC0055786
Lexington Regional WWTP
Davidson County
Application for Permit Renewal
Dear Mr. Weaver:
By this letter and attachments, I am requesting renewal of the NPDES permit for the City
of Lexington's Regional WWTP — NC0055786.
Attached are the following: EPA Form 2A — with attachments
Sludge Management Plan: The City disposes of the sludge generated at this facility
through its Compost Facility — WQ0001318.
Please forward comments and questions to my attention at 336-248-3970 or to
RASpach ,Iexingtonnc.gov.
Sincerely
Roger Spach,
Water Resources Superintendent
CC: Rick Comer
Joe Shaffer
Jennifer Carter

—�
®WxA
NCDENR
North Carolina Department of Environment and Natural Resources
Division of Water Resources
Water Quality Programs
Pat McCrory Thomas A. Reeder
Governor Director
October 24, 2013
Mr. Roger Allen Spach
City of Lexington
28 W. Center St
Lexington, NC 272923099
Subject: NOTICE OF VIOLATION
NOV-2013-LV-0655
Permit No. NCO055786
Lexington Regional WWTP
Davidson County
Dear Mr. Spach:
John E. Skvarla, III
Secretary
A review of Lexington Regional WWTP's monitoring report for July 2013 showed the following violations:
Parameter
Date
Limit Value
Reported Value
Limit Type
Nitrogen, Ammonia Total
07/20/13
3 mg/1
4.22 mg/l
Weekly Average Exceeded
Nitrogen, Ammonia Total
07/31/13
1 mg/1
1.38 mg/l
Monthly Average Exceeded
Remedial actions, if not already implemented, should be taken to correct the above noncompliance problem.
Please be aware that violations of your NPDES permit could result in enforcement action by the Division of
Water Quality for this and any additional violations of State law.
If you should have any questions, please do not hesitate to contact Jenifer Carter at [phone].
cc: SWP — Central Files
WSRO Files
North Carolina Division of Water Resources, Winston-Salem Regional Office
Location: 585 Waughtown St. Winston-Salem, North Carolina 27107
Phone: [phone] FAX: [phone] Customer Service: 1-877-623-6748
Internet: www.ncwater.org
Sincerely,
W. Corey Basinger
Regional Supervisor
Water Quality Regional Operations Section
Division of Water Resources
NorthCarolina
NRtlit'l lly
An Equal Opportunity i Affirmative Action Employer

V Cover Sheet from
a�1 rL (OS Staff Member to
' Regional Supervisor
DMR Review Record
Facility.: Tex- ' {� � Pemut/Pipe No.: /Vj�O() 5-5 Month/Year o7Q/3
Monthly Average Violations
Parameter Permit Limit DMR Value % Over Limit
ee /Daily Violations
Date Parameter Permit Limitjvpe
DMR Value % Over Limit
-`CZ2-7
Monitoring Frequency Violations
Date Parameter Permit Frequency Values Reported # of Violations
Other Violations �0$f /2 mokuki1'."
Completed by: J ra r Date: 0 1�
Regional Water Quality
Supervisor Signoff: I Date:
eNI - �� e vql--

June 20, 2013
Is Inuvaltmanilkwall
To: Corey Basinger
Regional Supervisor, Surface Water Protection, WSRO
Through: Cindy A. Moore
Supervisor, Aquatic T 'Cology Unit
From: Carol Hollenkamp
Quality Assurance fficxer, Aquatic Toxicology Unit
Subject; Whole effluent toxicity test results
Lexington WTP
NPDES Permit 4 NCO028037
Davidson County
The aquatic toxicity test using grab samples of effluent discharged from Lexington WTP has been
completed. Lexington WTP has a permitted effluent discharge that is 0.467 MGD entering Abbotts Creek
(7QI0 of 2.9 CFS). Whole effluent samples were collected on May 14 and May 16 by Jenifer Carter and
facility representative David Browder for use in a chronic Ceriodaphnia dubia pass/fail toxicity test. The
test using these samples resulted in a pass. Toxicity information follows,
Test Type
Test Concentrations
Test Result
Control Survival
Control Mean Reproduction
Test Treatment Survival
Treatment Mean Reproduction
First Sample pH
First Sample Conductivity
First Sample Total Residual Chlorine
Second Sample pH
Second Sample Conductivity
Second Sample Total Residual Chlorine
3-Brood Ceyiodaphnia dubia pass/fail
20 % sample
Pass
100%
3110
100%
30.5
6.84 SU
143.9 micrornhos/cm
<0. 10 mg/L
6.78 SU
131.4 micromhos/cm
<0. 10 mg/L
Test results for the above samples indicate that the effluent would not be predicted to have water quality
impacts on receiving water. These samples were split and tested by Meritech, Inc. The chronic
Ceriodaphnia dubia pass/fail toxicity test run by Meritech, Inc. also resulted in a pass. Please contact us if
finther effluent toxicity monitoring is desired. We may be reached at (919) 743-840 1.
Basin: YAD07
cc: Central Files
Jenifer Carter, WSRO
Aquatic Toxicology Unit Environmental Sciences Section

NC DENR - Div. Of Water Quality Re ion
OXICITY SAMPLE COLLECTION FORM page 1 of A ARO FRO MRO RRO WaRO WiRO WSRO
Facility/Water Body2
NPDES # NC 0 0 ' Kil Outfall #
County Gt r,7t;'�i Basin/Sub-basin C% �� `
Receiving Stream�,c>'t� C-�'lek j
/ Collector(s) (print) I ;J_
l�-
Grab Sample Composite Sample ❑ Composite Type:
❑ Constant Time/Constant Volume: samples/hour for
❑ Flow Proportional
Sampling Equipment Used: ❑ DWQ Portable Sampler or [1?1acility's Sampler
Date Began 14' Time Began Date End Time End
Sampling Site
Description
hours
Container: RIL 0 gal) PE cubitainer ❑Other (describe) # of containers
' Chlorinated: Lgles ❑ No ollected on Ice or in Refrigerated Sampler: El Yes ❑ No Shipped on Iced EE Yes ❑ No
Method of Shipment: Courier R Bus ❑ Staff ❑ er xplain):
Date/time of transfer to shipper or courier box: ! 1 '? -
Comments:
" S lit' sam le, splitting lab name: L
y.-'.S` 7P-
Did DWQ staff 2erform the s lit? ' If NO, then did DWg staff witness the split?
Collector(s
Si atur . �iCL� `G Date:
AdditionTiKamnle tantiler recordq
Relin uished by:
Received by:
Date:
Time:
Relinquished by:
Received by:
Date:
Time:
Relinquished b
Received by:
Date:
Time:
Relinquished by:
Received by:
Date:
Time:
mffifi�i DWQ/Environmental Sciences Section
Aquatic Toxicology Unit
1621 Mail Service Center
Raleigh, NC 27699-1621
ESS Courier #: 520101
Use street address only if shipping FedEx or UPS
Street address: 4401 Reedy Creek Road
Raleigh, NC 27607
phone: [phone]

IBC DENR - Div. Of Water Quality Region i
OXICITY SAMPLE COLLECTION FORM page 1 of ARO FRO MRO RRO WaRO WiRO WSRO
Facility/Water Body
NPDES #
NC 0 0 -7 3 Outfall # V
County -2a v, dso) Basin/Sub-basin b do �t — 0 �
% Receiving Stream Landh�6re,4
Collector(s) (print) t �7�1° i� �� J ='
Grab Sample Composite Sample ❑ Composite Type:
❑ Constant Time/Constant Volume: samples/hour for hours
❑ Flow Proportional
Sampling Equipment Used: ❑ DWQ Portable Sampler or Facility's Sampler
Date Began ' Time Began Date End Time End
i f yr l l
?7LL ClL
Sampling Site
Description
1
Container: P14L (I gal) PE cubitainer ❑Other (describe) A""' f- # of containers
Chlorinated: ❑files ❑ No Collected on Ice or in Refrigerated Sampler: ❑ Yes ❑ No Shipped on Ice: R'Qes ❑ No
Method of Shipment: Courier Bus ❑ Staff 4 Other (explain):
Date/time of transfer to shipper or courier box: 6uro-;r// :? / , '_°°� , '4 "—
/-
Comments:
S lit" sample, splitting lab name: r' C/
Did DWQ staff Eerform the split? If NO then did DWQ staff witness the s lit?
Collector(s)
Signature:
Additional ale h
records:
T-L >>"-„
Relinquished by:
Received by:
Date:
Time:
—Relinquished by:
Received by:
Date:
Time:
Relinquished by:
Received by:
Date:
Time:
Relinquished by:
Received by:
Date:
Time:
DWQ/Environmental Sciences Section
Aquatic Toxicology Unit Use street address only if shipping FedFx or UPS
1621 Mail Service Center Street address: 4401 Reedy Creek Road
Raleigh, NC 27699-1621 Raleigh, NC 27607
ESS Courier #: 520101 phone: [phone]

Carter, Jenifer
From: Roger Spach [[e-mail]]
Sent: Wednesday, January 30, 2013 2:27 PM
To: Carter, Jenifer
Cc: Steve Craver; Joseph Shaffer
Subject: RE: bypassing treatment unit
About 2 P.M. today, the unit was put back in service
From: Carter, Jenifer [mailto:[e-mail]]
Sent: Monday, January 28, 2013 4:19 PM
To: Roger Spach
Subject: RE: bypassing treatment unit
Noted. Thank you.
Before printing this email, please consider your budget and the environment,
if you must print, please print only what you need and save ink with the free Eco-Font.
NC DENR Winston-Salem Regional Office
Division of Water Quality
585 Waughtown Street
Winston-Salem, NC 27107
Voice: [phone]
FAX: [phone]
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.
From: Roger Spach [mailto:[e-mail]]
Sent: Monday, January 28, 2013 4:13 PM
To: Carter, Jenifer
Cc: Steve Craver; Joseph Shaffer
Subject: bypassing treatment unit
Our mechanical bar screen will be out of service for scheduled repair for 2 or three days. Wastewater will be diverted
through the manual screen during that time. No problems related to the effluent are anticipated
From: Steve Craver
Sent: Monday, January 28, 2013 4:09 PM
To: Roger Spach
Subject: RE: Midwest Bio Systems
Yes, that is so . we are taking the bar screen down tomorrow for Underwood to repair. it should be down 2 days or so.
From: Roger Spach
Sent: Monday, January 28, 2013 11:22 AM
To: Steve Craver
Subject: RE: Midwest Bio Systems

If we get a new one, it will have to go out for bids.
This'un is probably about our "speed" and there are two or three different brands that look like the same thing
From: Steve Craver
Sent: Monday, January 28, 2013 11:04 AM
To: Roger Spach
Subject: FW: Midwest Bio Systems
What did you think of this one?
From: Brian O'Malley[mailto:[e-mail]]
Sent: Friday, January 25, 2013 10:58 AM
To: Steve Craver; Roger Spach
Cc: 'Deron Keener'
Subject: Midwest Bio Systems
Steve,
Thank you for your time yesterday afternoon. Midwest Bio Systems has been manufacturing compost turning
equipment for over 20 years. We have more than 500 Aeromaster compost turners in the field, in over 25 countries.
We have a proven track record and our equipment has replaced the equipment of numerous competitors at existing
compost sites. Our website is www.midwestbiosystems.com
The Aeromaster pull -type compost turners feature the following:
➢ One man operation. No separate water truck is necessary for watering the windrows.
➢ Reduced compost production cycle time. Typically eight (8) weeks from windrow formation to a finished product
when using an Aeromaster turner is combined with the ACS system.
➢ The variable speed drum maximizes humus formation. Machines with excessive drum speeds pulverize feedstock's
and retard, rather than enhance, the composting process. Our drums work in the 150-300 rpm ranges —the optimal
environment for a quality end product. Microbes make compost, not equipment.
➢ Our watering system applies water to the compost as it is tossed over the drum, distributing the water evenly
throughout the material rather than just on the outside of the windrow which results in "dust here and mud there".
This equal distribution of moisture is essential for an optimum microbial environment.
➢ This same watering system enables proper distribution of inoculant (the addition of special beneficial microbes)
when water is applied to the windrow. Inoculants can be ineffective when applied with many watering systems on
the market.
➢ Aeration or the exchange of carbon dioxide in the windrow with air having its full oxygen content. Grover
Landscaping of Modesto, CA, measured carbon dioxide levels at 18% in front of their previous machine and 15%
after turning. They switched to AEROMASTER compost turners and found CO2 at 18% before turning and 1% after.
➢ The drum can be moved vertically removing it from the windrow at any time. This enables the operator to view an
interior profile of the windrow to assess progress or, if the material is too wet, simply pull out and move on.
➢ Durability. It is not uncommon for us to receive testimonials that a customer has used the equipment for 2-3 years
without a single hour of down time, which is most unusual in this industry.
➢ The finished product. Most importantly, we will challenge any of our competitors to utilize their equipment and
their composting methodology then submit their finished product to an independent lab comparison of the vital
characteristics of their compost compared to the same characteristics of compost produced with Aeromaster
equipment and the ACS methodology.
As a result of our conversation, we felt that the Aeromaster PT-130 compost turner would be a unit that would satisfy
the needs at your compost site. Attached you will find information that describes the features and benefits of the PT-
2

130 and its specifications. The water trailer option was also discussed so I am including information on this item a WT-
1775.
We have also attached a proposal for a PT-130 and WT-1775. Midwest Bio Systems will provide a one year warranty on
these items and your purchase includes an on -site setup.
Please let us know if you have any questions or would require additional information.
Brian O'Malley
Midwest Bio Systems
800-689-0714 office
815-590-7205 cell
[e-mail]

Carter, Jenifer
From: Roger Spach [[e-mail]]
Sent: Wednesday, November21, 2012 10:42 AM
To: Carter, Jenifer
Cc: Joseph Shaffer
Subject: Bypass of pretreatment facilities.
Attachments: BYPASS TREATMENT LETTER.doc
To follow up on our bypass letter (attached). The bypass of half of our BNR system for routine maintenance was
discontinued at 6:30 P.M. on November 8.
There was an upset of the BNR system associated with this work. There were elevated levels of ammonia, BOD and
phosphorous noted, but the plant remained in compliance with its permit.

RECEIVED
N.C.Dept. of ENR
Nov 0 7 2012
Winston-Salem
Regional Office
City of Lexington, NC
Department of Water Resources
November 6, 2012
Ms. Jennifer Carter
NC DENR
Winston Salem Regional Office
585 Waughtown Street
Winston Salem, NC 27107-2241
Re: City of Lexington
Lexington Regional WWTP
Permit No. NCO055786
Davidson County
Subject: By -Pass of Treatment Unit
Dear Ms. Carter:
As per my call on Monday, November 5, 2012, the City took train A of its BBR system
off line at 8:30 A.M. on that day to allow a contractor to remove sand accumulations in
this tank. This involved draining the contents of the tank into train B before the
contractor can work. The tank will be put back in service by Friday, November 9 when
the cleaning is complete.
This is the same process that was done last year when train B was cleaned. No problems
with treatment are anticipated.
Please direct any questions regarding this to my attention at 336-248-3970.
Sincerely,
Roger Spach
cc: Rick Comer, Public Works Director
Joe Shaffer, Utility Plant Supervisor

N.C.Dept. of ENR
SEP 18 2012
of Lu Winston-Salem
Regional Ofnce
4 CAB�v
City of Lexington, NC
Department of Water Resources
September 17, 2012
Corey Basinger, Water Quality Protection Supervisor
WSRO
585 Waughtown Street
Winston-Salem, NC 27107-2241
Re: City of Lexington, Regional WWTP - NCO055786
Davidson County
Request for Change in Plant Description
Dear Mr. Basinger:
The staff or our Regional Wastewater Treatment Plant have eliminated anaerobic
digestion of our sludge. They are currently using the anaerobic digesters as holding
tanks for the sludge until it is pumped to our compost facility. This modification has
been done without negative effect on both the compost facility and the plant's effluent.
I am asking that this change be approved until the plant's NPDES permit is modified to
reflect it in the renewal of the permit in 2014.
Sincerely,
Roger Spach, Water Resources Superintendent

jk1LT"4i_WWY
NCD NR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue Charles Wakild, P.E.
Governor Director
September 12, 2012
City of Lexington
Attn: Mr. Roger Spach
28 W. Center Street
Lexington, NC 27292
SUBJECT: Compliance Evaluation Inspection
Lexington Regional WWTP
NPDES Permit No. NCO055786
Davidson County
Dear Mr. Spach:
Dee Freeman
Secretary
On August 23, 2012, Ms. Jenifer Carter of the Winston-Salem Regional Office conducted a Compliance Evaluation
Inspection at the City of Lexington Regional Wastewater Treatment Plant. Mr. Joseph C. Shaffer, ORC, was
present during the inspection. The inspection consisted of two parts: an on -site inspection of the treatment facility
and a review of facility files and self -monitoring data.
A review of the self -monitoring data for the period of June 2010 through May 2012 revealed no NPDES limits
violations. Lab data correlated correctly with data on the submitted Discharge Monitoring Reports. Facility records
were well organized and current. ORC visitation and maintenance records were sufficient.
Overall the plant appears to be well maintained and operated. The anaerobic digesters are currently being used for
sludge storage only, with solids being sent to the belt press. The change has had no effect on compliance with the
NPPPIDES discharge permit.
No deficiencies or violations were noted during the inspection of the WWTP. The Division appreciates your efforts
to maintain compliance and to protect surface waters. Please review the enclosed inspection form for more detailed
in4ormaion. If you have any questions, please call Jenifer Carter at [phone].
Sincerely,
d
4�
W. Corey Basinger
Regional Office Supervisor
Surface Water Protection Section
Winston-Salem Regional Office
attachment
cc: Joseph C. Shaffer, ORC (same address)
SWP-Central Files
WSRO Files .t
North Carolina Division of Water Quality, Winston-Salem Regional Office One
Location: 585 Waughtown St. Winston-Salem, North Carolina 27107 NorthCaTolina
Phone: [phone] FAX: [phone] Customer Service: 1-877-623-6748
Internet: www.ncwaterquality.org atulullry
An Equal Opportunity 1 Affirmative Action Employer KL ` �/

United States Environmental Protection Agency
Form Approved.
EPA Washington, D.C. 20460
OMB No. 2040-0057
Approval expires 8-31-98
Section A: National Data System Coding (i.e., PCS)
Transaction Code NPDES yr/mo/day Inspection Type Inspector Fac Type
1 (NI 2 15I 31 NCO055786 111 121 12/08/23 117 18U C 191 c I
!J 20U
I-
Remarks
211111 1111 111111111111111111111111111111111111 1116
Inspection Work Days Facility Self -Monitoring Evaluation Rating B1 QA —------ ----------Reserved-----------
67 I 169 70 LI 71 I N I 721 NJ 73 L U 74 751 I I I I III 80
—�
Section B: Facility Data
Name and Location of Facility Inspected (For Industrial Users discharging to POTW, also include
Entry Time/Date
Permit Effective Date
POTW name and NPDES permit Number)
10:00 AM 12/08/23
09/08/01
Lexington Regional WWTP
Exit Time/Date
Permit Expiration Date
500 Glendale Rd
Lexington NC 27292
12:50 PM 12/08/23
14/04/30
Name(s) of Onsite Representative(s)/Titles(s)/Phone and Fax Number(s)
Other Facility Data
///
Joseph Charles Shaffer//336-357-5090 /
Name, Address of Responsible Official/Title/Phone and Fax Number
Contacted
Roger Allen Spach,28 W Center St Lexington NC 27292//336-243-2489/ No
Section C: Areas Evaluated During Inspection (Check only those areas evaluated)
Permit 0 Flow Measurement ■ Operations & Maintenance Records/Reports
Self -Monitoring Program E Sludge Handling Disposal 0 Facility Site Review Effluent/Receiving Waters
Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary)
(See attachment summary)
Name(s) and Signature(s) of Inspector(s) Agency/Office/Phone and Fax Numbers Date
Jenifer., arter WSRO WQ//336-771-5000/
Signature of management QrA Reviewer Agency/Office/Phone and Fax Numbers Date
IV-b r w - • k)� I Z 20(2-
EPA Form 3560-3 (Rev 9-94) Previous editions are obsolete.
Page # 1

t
Permit: NCO055786 Owner - Facility: Lexington Regional WWTP
Inspection Date: 08/23/2012 Inspection Type: Compliance Evaluation
Permit Yes No NA NE
(If the present permit expires in 6 months or less). Has the permittee submitted a new application?
n
❑ ■
Is the facility as described in the permit?
■
n n n
# Are there any special conditions for the permit?
❑
■ Q n
Is access to the plant site restricted to the general public?
00011
Is the inspector granted access to all areas for inspection?
■
n Q Q
Comment:
Record Keeping
Yes
No NA
NE
Are records kept and maintained as required by the permit?
■
n Q
n
Is all required information readily available, complete and current?
■
0 0
n
Are all records maintained for 3 years (lab. reg. required 5 years)?
■
❑ ❑
Are analytical results consistent with data reported on DMRs?
■
1111
n
Is the chain -of -custody complete?
■
Q Q
n
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?
■
n ❑
(If the facility is = or > 5 MGD permitted flow) Do they operate 24/7 with a certified operator on each shift?
■
n Q
n
Is the ORC visitation log available and current?
■
❑ 0
n
Is the ORC certified at grade equal to or higher than the facility classification?
■
❑ ❑
n
Is the backup operator certified at one grade less or greater than the facility classification?
■
n n
n
Is a copy of the current NPDES permit available on site?
■
❑ ❑
Q
Facility has copy of previous year's Annual Report on file for review?
■
❑ 0
Comment:
Influent Sampling
Yes
No NA
NE
# Is composite sampling flow proportional?
■
Q n
n
Page # 3

i
Permit: NCO055786 Owner - Facility: Lexington Regional WWTP
Inspection Date: 08/23/2012 Inspection Type: Compliance Evaluation
Pump Station - Influent
Are float controls operable?
Is SCADA telemetry available and operational?
Is audible and visual alarm available and operational?
Comment:
Bar Screens
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?
Comment: manual bar screen is used for back-up purposes.
Yes No NA NE
0000
nn■n
■nnn
Yes No NA NE
Yes No NA NE
Type of grit removal
a.Manual
n
b.Mechanical
■
Is the grit free of excessive organic matter?
■
n
❑
Is the grit free of excessive odor?
■
n
n
n
# Is disposal of grit in compliance?
■
n
n
n
Comment:
Aeration Basins
Yes
No
NA
NE
Mode of operation
Plug flow
Type of aeration system
Diffused
Is the basin free of dead spots?
■
n
00
Are surface aerators and mixers operational?
n
n
■
o
Are the diffusers operational?
■
n
n
n
Is the foam the proper color for the treatment process?
■
n
n
n
Does the foam cover less than 25% of the basin's surface?
■
n
n
n
Is the DO level acceptable?
■
n
n
n
Page # 5

Permit: NC0055786 Owner - Facility: Lexington Regional WWTP
Inspection Date: 08/23/2012 Inspection Type: Compliance Evaluation
Lagoons
Yes
No
NA
NE
Are lagoons operated in?
Parallel
# Is a re -circulation line present?
■
n
Q
n
Is lagoon free of excessive floating materials?
■
n
El
n
# Are baffles between ponds or effluent baffles adjustable?
0
❑
■
Are dike slopes clear of woody vegetation?
■
0
Are weeds controlled around the edge of the lagoon?
■
0
❑
Are dikes free of seepage?
■
n
Q
n
Are dikes free of erosion?
■
n
n
0
Are dikes free of burrowing animals?
■
Q
Cl
0
# Has the sludge blanket in the lagoon (s) been measured periodically in multiple locations?
Q
❑
■
Q
# If excessive algae is present, has barley straw been used to help control the growth?
❑
C1
■
Is the lagoon surface free of weeds?
■
n
Q
n
Is the lagoon free of short circuiting?
■
0
Comment: This section used to evaluate the polishing ponds.
Disinfection -Liquid
Yes
No
NA
NE
Is there adequate reserve supply of disinfectant?
■
(Sodium Hypochlorite) Is pump feed system operational?
■
n
0
n
Is bulk storage tank containment area adequate? (free of leaks/open drains)
■
0
Q
0
Is the level of chlorine residual acceptable?
■
n
Q
n
Is the contact chamber free of growth, or sludge buildup?
■
❑
❑
0
Is there chlorine residual prior to de -chlorination?
■
Q
❑
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?
■
n
Q
n
# Is de -chlorination substance stored away from chlorine containers?
■
n
■
n
Comment:
Are the tablets the proper size and type?
0
0
■
Page# 7

Permit: NC0055786
Inspection Date: 08/23/2012
Standby Power
Is automatically activated standby power available?
Is the generator tested by interrupting primary power source?
Is the generator tested under load?
Owner - Facility: Lexington Regional WWTP
Inspection Type: Compliance Evaluation
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?
Comment:
Yes No NA NE
■n❑n
■n0❑
■000
nnn■
■npn
■000
■000
Page # 9

JC
City of Lexington, NC
Department of Water Resources
July 2, 2012
W. Corey Basinger
Surface Water Supervisor
WSRO
585 Waughtown St
Winston-Salem, NC 27107-2241
RE: City of Lexington, NC
Davidson County
NCO055786
NOV- 2012 — MV — 0046
Dear Mr. Basinger:
RECEIVED
N.C.Dept. of ENR
JUL 0 3 2012
Winston-Salem
Regional Office
Per the above Notice of Violation (attached), I have had our plant personnel review data. We
have found that data for the week of 02/04/2012 was omitted by mistake. Missing data for this
week have been entered on the January 2012 DMR as attached.
Sincerely,
Roger Spach
Superintendent
Cc: Gisele Comer, Joseph Shaffer. Rick Comer, Jenifer Carter

NPDES PERMIT NO.: NCO055786 PERMIT VERSION: 4.0
FACILITY NAME: Lexington Regional WWTP CLASS: WW-4.
OWNER NAME: City of Lexington ORC: Joseph Charles Shaffer
GRADE: WW4 ORC HAS CHANGED: No
eDMR PERIOD: 0 1 -2012 (January 2012) VERSION: 4.0
COMPLIANCE: Compliant CONTACT PHONE #: [phone]
SAMPLING LOCATION: EFFLUENT DISCHARGE NO.: 001
PERMIT STATUS: Active
COUNTY: Davidson
ORC CERT NUMBER: 994246
STATUS:v r)IC- C-- 4e]
I ogress
SUBMISSION DATE:
NO DISCHARGE*: NO (Continue)
m
A
44
a
S
y
o
U
m
5 c
o
F1
F
Q
a
O
c
C
E
F
$
va
1 O
}p,
°
FC
O
o
m
oC
3
1 Z
C0600
QM665
C0665
QS665
01062
01067
01027
01051
00094
NC01
32730
Monthly
Monthly
Weekly
See Permit
2 X month
Weekly
Weekly
5 X week
Annual)
2 X month
Composite
Calculated
Composite
Calculated
Calculated
Composite
Composite
Composite
Grab
Grab
Grab
I TOTAL N -
Total P - Qty
TOTAL P -
I Total P - Qty
MOLY
I NICKEL
CADMIUM
LEAD
ICNDUCTVY
ANN POL
PHENOLS
2400
Hrs
2400
Firs
YB/N
mgA
Ib/mon
mg/I
lb/season
m
u t
u 1
u 1
umhos/cm
yes=1 no=0
ug/I
1
2
7:00
24:00
8:00
24:00
B
H
H
H
H
3
7:00
24:00
8:00
24:00
B
4.64
0.12
< 10
< 10
.12
11.8
362.4
4
7:00
24:00
8:00
24:00
Y
367.6
< 2
5
7:00
24:00
8:00
24:00
Y
382.3
6
7:00
24: 00
8:00
24:00
Y
389
7
8
9
7:00
2400
8:00
24:00
Y
412
10
7:00
24:00
8:00
24:00
Y
< 2
< 20
389
11
7:00
24:00
8:00
24:00
Y
0.66
402.3
12
7:00
24:00
8:00
24:00
Y
427.5
13
7:00
24:00
8:00
24:00
Y
378.9
14
15
16
7:00
24:00
8:00
24:00
H
17
7:00
24:00
8:00
24:00
Y
< 20
< 2
< 20
372.7
18
7:00
24:00
8:00
24:00
Y
0.26
38l .8
< 2
19
7:00
24:00
8:00
24:00
Y
387.9
20
7:00
24:00
8:00
24:00
Y
407.6
21
22
23
7:00
24:0
88:00
24:00
Y
396
24
7:00
24:00
8:00
24:00
Y
< 2
< 20
367.3
25
7:00
24:00
800
24:00
Y
1
251.22
0.28
377.2
26
7:00
24:00
8:00
24:00
Y
391.2
27
7:00
24:00
8:00
24:00
Y
389.9
28
29
30
7:00
24:00
8:00
24:00
Y
407.4
31
T00 124,00
8:00 12400
Y
1326.6
< 2
< 20
392.8
Monthly Average Limit:
Monthly Average:
4.64
251.22
0.33 11326.6
0
0 10
2.36
389.14
0
Daily Maximum:
4.64
251.22
0.66
1326.6
0
0
0
11.8
427.5
0
Daily Minimum:
4.64
251.22
0.12
1326.6
0
0
0
0 1
362A
0
Monthly Avg % Removal (85 % ):

NPDES PERMIT NO.: NCO055786
PERMIT VERSION: 4.0
FACILITY NAME: Lexington Regional WWTP
CLASS: WW-4.
OWNER NAME: City of Lexington
ORC: Joseph Charles Shaffer
GRADE: WW-4
ORC HAS CHANGED: No
eDMR PERIOD: 0 1 -2012 (January 2012)
VERSION: 4_0
COMPLIANCE: Compliant CONTACT PHONE #: [phone]
PERMIT STATUS: Active
COUNTY: Davidson
ORC CERT NUMBER: 994246
STATUS: rogress
SUBMISSION DATE:
SAMPLING LOCATION: EFFLUENT DISCHARGE NO.: 001 NO DISCHARGE*: NO (Continue)
C
Ji
U
E
F
°
U
E
F
°
11 O
4
O
U
O
'o
Z
01147
COMER
01042
01092
00720
01077
01002
00076
01034
Weekly
2 X month
Monthly
Monthly
Monthly
Composite
Composite
Composite
Composite
Calculated
Calculated
Calculated
Calculated
Composite
SELENIUM
MERCURY-
ICOPPER
ZINC
CYANIDE
SILVER
ARSENIC
TURBH)TY
CHROMIUM
2400
Hrs
2400
YB/N
u
n l
u l
u l
.0
m
u l
ntu
ugA
1
2
7:00
24:00
8:00
]24:00
B
3
7:00
24:00
8.00
B
< 5
12.1
33.4
< 5
< 10
< 5
4
7:00
24:00
8:00
24:00
Y
I
I
< 1
< 0.05
5
7:00
24:00
8:00
24:00
Y
0.98
6
7:00
24:00
8:00
24:00
Y
7
8
9
7:00
24:00
8:00
24:00
Y
10
7:00
24:00
8:00
24:00
Y
< 5
11
7.00
24:00
8:00
24:00
Y
12
7:00
24:00
8:00
24:00
Y
1.67
13
7:00
24:00
8:00
24:00
Y
14
15
16
7:00
24:00
8:00
24:00
17
7:00
24.00
8.00
24:00
Y
< 5
18
7:00
24:00
8:00
24:00
Y
1.7
19
7:00
24:00
8:00
24:00
Y
1.02
20r22
7:00
24:00
8:00
24:00
Y
21
23
700
24:00
8:00
24:00
Y
24
7:00
24:00
8:00
24:00
Y
< 5
25
7:00
24:00
8:00
24:00
Y 1
1.82
26
7:00
24:00
8:00
24:00
Y
27
7:00
24:00
8:00
24:00
Y
28
29
30
7:00
24:00
8:00
24:00
Y
31
7:00 124DO
8:00
24:00 IY
1
< 5
Monthly Average Limit:
Monthly Average:
0
0.85
12.1
33.4 10
0
0
1.3725
0
Daily M"Imum:
0
1.7
12.1
33.4
0
0
0
1.82
0
Daily Minimum:
0
0
12.1
33.4
0
0
0
0.98
0
Monthly Avg % Removal (85 %):

NCDENR
North Carolina Department of Environment and Natural Resources
Beverly Eaves Perdue
Governor
Mr. Roger Allen Spach
City of Lexington
28 W. Center St
Lexington, NC 27292
Subject: NOTICE OF VIOLATION
NOV-2012-NW-0046
Permit No. NCO055786
Lexington Regional WWTP
Davidson County
Dear Mr Spach:
Division of Water Quality
Charles Wakild, P.E.
Director
June 26, 2012
Dee Freeman
Secretary
A review of Lexington Regional WWTP's monitoring report for February 2012 showed the following violations:
Parameter
Week Ending
Required Frequency
# of Values Reported
Cadmium, Total (as Cd)
02/04/12
Weekly
0
Selenium, Total (as Se)
02/04/12
Weekly
0
Lead, Total (as Pb)
02/04/12
Weekly
0
Remedial actions, if not already implemented, should be taken to correct the above noncompliance problem.
Please be aware that these violations of your NPDES permit, and any additional violation of State law, could
result in enforcement action by the Division of Water Quality.
If you should have any questions, please do not hesitate to contact Jenifer Carter at [phone].
cc: SWP — Central Files
WSRO Files
North Carolina Division of Water Quality, Winston-Salem Regional Office
Location: 585 Waughtown St. Winston-Salem, North Carolina 27107
Phone: [phone] FAX: [phone] Customer Service: 1-877-623-6748
Internet: www.ncwaterquality.org
Sincerely,
W. Corey Basinger
Surface Water Regional Supervisor
Winston-Salem Regional Office
Division of Water Quality
ne
NorthCarolina
Naturally
An Equal Opportunity i Affirmative Action Employer

NCDENR
North Carolina Department of Environment and Natural Resources
Beverly Eaves Perdue, Governor Dee Freeman, Secretary
FAX TRANSMITTAL SHEET
_ � 1
TO':' �i S�� P FROM:
COMPANY: �A PAGES: (Including cover sheet)
FAX NUMBER: ���, ��� : ��07�o DATE: l�
RE: ��'O�kn z4vTr m
❑ Urgent ❑ For Review ❑ Information ❑ Please Reply Your Request
COMMENTS:
One
585 Waughtown Street, Winston-Salem, North Carolina 27107-2241 NOT��ICaTO/1/1Tla
Phone: [phone] FAX: [phone] Internet: www.enr.state.nc.us/ENR/ �aturallry
An Equal opportunity / Affirmative Action Employer- 50 % Recycled \ 10 % Post Consumer Paper

z �jql
;A
North Carolina Department of Environment and Natural Resources
Division of Water Quality
3everly Eaves Perdue Charles Wakild, P.E. Dee Freeman
jovernor Director
Secretary
June 26, 2012
Mr. Roger Allen Spach
City of Lexington
28 W. Center St
Lexington, NC 27292
Subject: NOTICE OF VIOLATION
NOV-2012-MV-0046
Permit No. NCO055786
Lexington Regional WWTP
Davidson County
Dear Mr Spach:
A review of Lexington Regional WWTP's monitoring report for February 2012 showed the following violations:
Parameter
Week Ending
Required Frequency
# of Values Reported
Cadmium, Total (as Cd)
02/04/12
Weekly
0
Selenium, Total (as Se)
02/04/12
Weekly
0
Lead, Total (as Pb)
02/04/12
Weekly
0
Remedial actions, if not already implemented, should be taken to correct the above noncompliance problem.
Please be aware that these violations of your NPDES permit, and any additional violation of State law, could
result in enforcement action by the Division of Water Quality.
If you should have any questions, please do not hesitate to contact Jenifer Carter at [phone].
cc: SWP — Central Files
WSRO Files
North Carolina Division of Water Quality, Winston-Salem Regional Office
Location: 585 Waughtown St. Winston-Salem, North Carolina 27107
Phone: [phone] FAX: [phone] Customer Service: 1-877-623-6748
Internet: www.ncwaterquality.org
An Equal Opportunity �'Affirmative Action Employer
Sincerely,
W. Corey Basinger
Surface Water Regional Supervisor
Winston-Salem Regional Office
Division of Water Quality
NorthCar®lina
:aural y

City of Lexington, NC
Department of Water Resources
May 31, 2012
Ms. Jennifer Carter
NC DENR
Winston Salem Regional Office
585 Waughtown Street
Winston Salem, NC 27107-2241
Re: City of Lexington
Lexington Regional WWTP
Permit No. NCO055786
Davidson County
Subject: By -Pass of Treatment Unit
Dear Ms. Carter:
RECEIVED
N.C.Dept. ofENR
JUN 0 4 2012
Winston-Salem
Re 'onal office
As per my call on Tuesday, May 29, 2012, the City took its primary influent bar screen
out of service for repair. This involved bypassing the influent flow through the coarse
bar screens while that unit was repaired. This work started at 8:00 A. M and was
completed by 3:00 P.M. on May 30
No problems with treatment were noted.
Please direct any questions regarding this to my attention at 336-248-3970.
Sincerely,
Roger Spach
cc: Rick Comer, Public Works Director
Joe Shaffer, Utility Plant Supervisor

RECEIVED
N.C. Dept. of ENR
MAY 2 9 2012
Winston-Salem
Regional Office
City of Lexington, NC
Department of Water Resources
May 23, 2012
Ms. Jennifer Carter
NC DENR
Winston Salem Regional Office
585 Waughtown Street
Winston Salem, NC 27107-2241
Re: City of Lexington
Lexington Regional WWTP
Permit No. NCO055786
Davidson County
Subject: By -Pass of Treatment Units
Dear Ms. Carter:
As per the email from Joseph Shaffer on May 22, 2012, the City did a routine cleaning of
its chlorine contact tanks. This involved bypassing one at a time while that unit was
cleaned. This work started at 8:30 A. M and was completed by 11:00 A.M.
No problems with treatment were noted.
Please direct any questions regarding this to my attention at 336-248-3970.
Sincerely,
9
Roger Spach
cc: Rick Comer, Public Works Director
Joe Shaffer, Utility Plant Supervisor

Carter, Jenifer
From: Joseph Shaffer [e-mail]]
Sent: Tuesday, May 22, 2012 2:09 PM
To: Carter, Jenifer
Subject: contact tanks
Today May 22 2012, we cleaned the chlorine contact tanks.
First was the left side from 8:30 AM to 11:00AM, the right side was still on line and treating the water.
The right side was cleaned after that. It was completed 113M.
Both contact tanks are up and running now.

Cover Sheet from
Staff Member to
Regional Supervisor
DMR Review Record
Permit/Pi e No. 11 Month/Year r / ow/ O'
Facility: � p .%� �
Monthly Averace Violations
Parameter Permit Limit DMR Value % Over Limit
Weekly/Daily Violations
Date Parameter Permit Li riit/Tvpe DMR Value % Over Limit
Monitoring Frequency Violations
Date Parameter Permit Freguencv Values Reported # of Violations
Violations
l o, (ill LU,jas_
Completed by: ICC���✓ Date:
Regional Water Quality
Supervisor SiQnoff: Date:

City of Lexington, NC
Department of Water Resources
January 10, 2012
System Performance Annual Report - 2011
Lexington Regional WWTP
I. General Information:
(A) Name of Regulated Entity: Lexin on Regional WWTP
RECEIVED
N C Deot. of ENR
JAN 13 202
Winston-Salem
Regional Office
(B) Responsible person: Roger Spach, Water Resources Superintendent
City Of Lexington
28 West Center Street
Lexington, NC 27292
(C) Applicable Permit: NCO055786
(D) Description of treatment process: The Lexin on Regional WWTP is a wastewater
treatment facilitv consistine of influent DumD stations; flow measurement, mechanical bar
screens; grit collection; primary clarifiers; roughing, filters; aeration basins; secondary
clarifiers, post aeration basins; chlorination contact chamber, anaerobic digesters; and
sludge drying beds with a compostin fg� acility located at 500 Glendale Road, south of
Lexington in Davidson County. The plant discharges into the Abbott's Creek arm of High
Rock Lake which is classified Class WS-III and B waters in the Yadkin -Pee Dee River
Basin.
II. Performance:
(A) Description of overall 12 month performance: This treatment system performed in full
compliance for all 12 months of 2011.
(B) Violations:
(1) Permit Limit Violations: none
(2) Monitoring and Reporting Violations: none
(3) Illegal Bypasses of Treatment Facilities: none
(4) Sanitary Sewer Overflows: none
L= U P
JAN 1 1 2012

r
(continued)
(C) Known Environmental Impact of Violations: none
Description of corrective measures taken to correct violations or deficiencies:
Not applicable
III. Notification: This document is available for review by the public at the Water Resources
Administrative Office at 711 Talbert Boulevard. Public notification of the availability of this
document will be made by notice in the local newspaper The Dispatch in February, by
advertisement on the Citv's cable access channel, and by presentation to the Lexington Utilities
Commission on February 6 2012. Notice of this document' s availability will be mailed to all of
the City of Lexin on's utility customers in February of 2012.
IV. Certification:
The information in this report was prepared by me and is accurate and complete to the best
of my knowledge:
Water Resources Superintendent date: /C ? 6 / Z
Roger Spach

RM
1
City of Lexington, NC
Department of Water Resources
December 23, 2011
Ms. Jennifer Carter
NC DENR
Winston Salem Regional Office
585 Waughtown Street
Winston Salem, NC 27107-2241
Re: City of Lexington
Lexington Regional WWTP
Permit No. NCO055786
Davidson County
Subject: By -Pass of Treatment Unit
Dear Ms. Carter:
RECEIVED
N.C.Dept. of ENR
DEC 2 8 2011
Winston-Salem
Regional Office
As per my phone call on November 30, 2011, the City has bypassed one of its two BNR
units for cleaning. This work was completed and unit put back in service on the evening
of December 21.
This unit coincided with an elevation of effluent ammonia during the week of December
29, but no other problems were noted.
Please direct any questions regarding this to my attention at 336-248-3970.
Sincerely,
Roger Spach
cc: Rick Comer, Public Works Director
Joe Shaffer, Utility Plant Supervisor

N.C.Dept. of ENR =>
�pF W A J��yl EC 2 3 20�1 State of North Carolina
epartment of Environment and Natural Resources
CO Winston-Salem Division of Water Quality
ReaionalOffloe
Go < Flow Tracking/Acceptance for Sewer Extension Permit Applications
(FTSE—10/07)
Project Applicant Name: City of Lexington
Project Name for which flow is being requested: Annual Report
More than one FTSE-10107 may be required for a single project if the owner of the WWTP is not responsible for all
pump stations along the route of the proposed wastewater flow.
I. Complete this section only if you are the owner of the wastewater treatment plant.
a. WWTP Facility Name: City of Lexington Waster Water Treatment Plant & Reuse System
b. WWTP Facility Permit #:
NCO055786 & WQ0023213
c. WWTP facility's permitted flow
d. Estimated obligated flow not yet tributary to the WWTP
e. WWTP facility's actual avg. flow
f. Total flow for this specific request
g. Total actual and obligated flows to the facility
h. Percent of permitted flow used
All flows are in MGD
6.8
.11
2.91
II. Complete this section for each pump station you are responsible for along the route of this
proposed wastewater flow.
List pump stations located between the project connection point and the WWTP
Pump Station Name Approx. Capacity, MGD Approx. Current Avg.
(Finn/Design) Daily Flow, MGD
III. Certification Statement:
I, Rick Comer , certify that, to the best of my knowledge, the addition of the
volume of wastewater to be permitted in this project has been evaluated along the route to the receiving
wastewater treatment facility and that the flow from this project is not anticipated to cause any capacity
related sanitary sewer overflows or overburden any downstream pump station en route to the receiving
treatment plant under normal circumstances. This analysis has been performed in accordance with local
established policies and procedures using the best available data. This certification applies to those items
listed above in Sections I and II for which I am the responsible party. Signature of this form indicates
acce4ande of this wastewater flow.
1
Signature
Date

Exhibit B
12/14/2011
Permit #
Facility Name
Effective Date
Gallons Permitted
Number of Lots / Explanation
number of
lots tied on
Remaining Obligated Flow
WQ0031812
Caden Village
6/7/2007
13,440
56 lots - 2bedroom
7
11,760
W00029946
Glen Oaks Townhomes
3/8/2006
9,120
38 lots - 2bedroom
18
4,800
WQ0030717
Madison Place
9/6/2006
3,360
14 lots - 2 bedroom
13
240
W00029105
The Vineyards at Lexington
9/21/2006
68,640
142 lots - 2 bedroom
116
40,800
WQ0031750
The Vineyards at Lexington Subdivision Phase 2
6/1/2007
20,160
56 lots - 3 bedroom
8
17,280
WQ0032655
Sa ona Village Center
2/7/2008
21,114
Currently under construction
0
21,114
WQ0034263
Tuscany Subdivision
8/25/2009
8,280
under construction 23-3 bedroom
0
8,280
WQ0035634
Sheetz in Welcome
11/10/2011
5,600
under construction
5,600
109,874
0.11

12 Month Influent Flow
Monthly Average in MG
Dec 2.91 2010
Jan 2.77 2011
Feb 2.80 2011
Mar 3.51 2011
Apr 3.13 2011
May 2.99 2011
Jun 2.44 2011
Jul 2.33 2011
Aug 2.28 2011
Sep 2.56 2011
Oct 2.43 2011
Nov 3.45 2011

v
OF WATE9 State of North Carolina
0G Department of Environment and Natural Resources
_co Division of Water Quality
o Flow Tracking/Acceptance for Sewer Extension Permit Applications
(FTSE—10/07)
Project Applicant Name: C�+`� Leklnc
Project Name for which flow is being requested: {grlylo 0 1 f e-pG
More than one FTSE-10107 may be required for a single project if the owner of the WWTP is not responsible for all
pump stations along the route of the proposed wastewater flow.
I. Complete this section only if you are the owner of the wastewater treatment plant.
a. WWTP Facility Name:
b. WWTP Facility Permit
All flows are in MGD
c. WWTP facility's permitted flow
d. Estimated obligated flow not yet tributary to the WWTP
e. WWTP facility's actual avg. flow
f. Total flow for this specific request
g. Total actual and obligated flows to the facility
bt L ", $'' J
h. Percent of permitted flow used , 3 % 3�D
II. Complete this section for each pump station you are responsible for along the route of this
proposed wastewater flow.
List pump stations located between the project connection point and the WWTP
Pump Station Name Approx. Capacity, MGD Approx. Current Avg.
(Firm/Design) Daily Flow, MGD
III. C �iftion Statement:
Cot�I, G /^ , certify that, to the best of my knowledge, the addition of the
volume of wastewater to be permitted in this project has been evaluated along the route to the receiving
wastewater treatment facility and that the flow from this project is not anticipated to cause any capacity
related sanitary sewer overflows or overburden any downstream pump station en route to the receiving
treatment plant under normal circumstances. This analysis has been performed in accordance with local
established policies and procedures using the best available data. This certification applies to those items
listed above in Sections I and 11 for which I am the responsible party. Signature of this form indicates
acce,Atarco, of this wastewater flow.
Official Signature
Date

Exhibit "A"
CITY OF LEXINGTON
PERMITTED FLOW EXPLANATION
The City of Lexington currently owns and operates 2 facilities that treat sewer.
• The City of Lexington Regional Waste Water Treatment Plant
Facility # NC0055786 with a permitted capacity of 6.5 million gallons per day
• A reuse system located at the City of Lexington Golf Course
# WQ0023213 This facility has the capacity to treat 300,000 gallons per day
for use as irrigation. This sewer is treated upstream of the plant
These facilities taken together give the City treatment capacity of 6.8 million gallons per
day.

Exhibit B
Exhibit "B"
Permit #
Facility Name
Effective Date
Gallons Permitted
Number of Lots / Explanation
number of
lots tied on
Remaining Obligated Flow
WQ0031812
CadenVillage
6/7/2007
13,440
56lots - 2bedroom
6
11,280
WQ0029946
Glen Oaks Townhomes
3/8/2006
9,120
38 lots - 2bedroom
18
4,800
WQ0030717
Madison Place
9/6/2006
3,360
14 lots - 2 bedroom
0
3,360
WQ0029105
The Vineyard at Lexington
9/21/2006
68,640
142 lots - 2 bedroom
37
59,760
WQ0031750
The Vineyards at Lexington Subdivision Phase 2
6/1/2007
20,160
56 lots - 3 bedroom
8
17,280
WQ0032634
Welcome Plaza
1/11/2008
1,960
Currently under construction
0
1,960
W00032655
Sapona Village Center
2/7/2008
21,114
Currently under construction
0
21,114
W00032801
First Alliance Church
3/6/2008
900
Currently under construction
0
0
WQ0033061
ICentral Davidson Elementary School
39,636
9,000
Currently under construction
0
0
MGD
0.12

0
THE CITY OF ° `y` z LEXINGTON
NORTH cnRov~ CAROLINA
"Serving The Community Since 1828"
Water Resources Department
28 W. Center Street
Lexington, NC 27292
March 30, 2011
Ms. Jennifer Carter
NC DENR
Winston Salem Regional Office
585 Waughtown Street
Winston Salem, NC 27107-2241
Re: City of Lexington
Lexington Regional WWTP
Permit No. NCO055786
Davidson County
Subject: By -Pass of Treatment Unit
Dear Ms. Carter:
fir;- -----
�4
FAAPR Q insegior�
Telephone [phone]
Fax[phone]
As per my phone call on March 29, 2011, the City has bypassed both its contact tanks for
cleaning starting March 29, 2011 at 8:00 am. This work was completed and unit put back
in service at 12:00 pm on March 29, 2011.
This caused no deterioration of the effluent because of this event.
Please direct any questions regarding this to my attention at 336-248-3970.
Sincerely,
Roger Spach
cc: Rick Comer, Public Works Director
Joe Shaffer, Utility Plant Supervisor

RECEIVED
N.C. Dent. of ENR
JAN 2 4 2011
January 10, 2011
System Performance Annual Report - 2010
Lexington Regonal WWTP
I. General Information:
(A) Name of Regulated Entity: Lexington Regional WWTP
(B) Responsible person: Roger Spach, Water Resources Superintendent
City Of Lexington
28 West Center Street
Lexington, NC 27292
(C) Applicable Permit: NCO055786
(D) Description of treatment process: The Lexington Regional WWTP is a wastewater
treatment facility consisting of influent pump stations; flow measurement; mechanical
bar screens; grit collection; primary clarifiers; roughing, filters; aeration basins;
secondar�larifiers; post aeration basins; chlorination contact chamber; anaerobic
digesters; and sludge drying beds with a compostingfacility located at 500 Glendale Road
, south of Lexington in Davidson County. The plant discharges into the Abbott's Creek
arm of High Rock Lake which is classified Class WS-III and B waters in the Yadkin -Pee
Dee River Basin.
II. Performance:
(A) Description of overall 12 month performance: With the following exceptions this
treatment system performed in full compliance for all 12 months of 2010.
(B) Violations:
(1) Permit Limit Violations: none
(2) Monitoring and Reporting Violations: none
(3) Illegal Bypasses of Treatment Facilities: none
(4) Sanitary Sewer Overflows: none
(continued)
I JAN J

r , . .
(C) Known Environmental Impact of Violations: none
Description of corrective measures taken to correct violations or deficiencies:
Not applicable
III. Notification: This document is available for review by the public at the Water Resources
Administrative Office at 711 Talbert Boulevard. Public notification of the availabilfty of this
document will be made by notice in the local news paper The Dispatch in February, by
advertisement on the City's cable access channel, and by presentation to the Lexington Utilities
Commission on February 7, 2011. Notice of this document' s availability will be mailed to all of
the City of Lexington's utility customers in February of 2011.
IV. Certification:
The information in this report was prepared by me and is accurate and complete to the
best of my knowledge:
Water Resources Superintendent date:
Roger Spach

NCDENR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue
Governor
Coleen H. Sullins
Director
January 6, 2011
City of Lexington
Attn: Mr. Roger Spach
28 W. Center Street
Lexington, NC 27292
SUBJECT: Compliance Evaluation Inspection
Lexington Regional WWTP
NPDES Permit No. NCO055786
Davidson County
Dear Mr. Spach:
Dee Freeman
Secretary
On December 9, 2010, Ms. Jenifer Carter of the Winston-Salem Regional Office conducted a Compliance
Evaluation Inspection at the City of Lexington Regional Wastewater Treatment Plant. Mr. Joseph C. Shaffer, ORC,
was present during the inspection. The inspection consisted of two parts: an on -site inspection of the treatment
facility and a review of facility files and self -monitoring data.
A review of the self -monitoring data for the period of October 2008 through September 2010 revealed a few minor
NPDES limits violations, which have been previously addressed through the Division's regular monthly
enforcement program. Lab data correlates correctly with data on the submitted Discharge Monitoring Reports.
Facility records were well organized and current.
Overall the plant appears to be well maintained and operated. Due to ongoing repairs to the mechanical bar screen,
the manual bar screen was being used during the inspection. The spacing on this bar screen was not sufficient to
keep trash from passing through to the plant. Staff was successfully raking out the trash at several points to prevent
any from reaching surface waters.
Please notify Ms. Carter upon completion of the repairs and cleanup of trash throughout the plant so she can
perform a follow-up inspection before June 9, 2011. Should you have any questions please contact Jenifer
Carter in our Winston-Salem Regional Office at [phone].
Sincerely,
W. Corey Basinger
Interim Surface Water Regional Supervisor
Winston-Salem Regional Office
attachment
cc: Joseph C. Shaffer, ORC (same address)
SWP-Central Files
SRO ]Fjjgb,
North Carolina Division of Water Quality, Winston-Salem Regional Office One
Location: 585 Waughtown St. Winston-Salem, North Carolina 27107 NorthCarolina
Phone: [phone] FAX: [phone] Customer Service: 1-877-623-6748
Internet: www rimaterquality.org �aturgllff
An Equal Opportunity 1 Affirmative Action Employer

United States Environmental Protection Agency
Form Approved.
EPA Washington, D.C. 20460
OMB No. 2040-0057
Water Compliance Inspection Report
Approval expires8-31-98
Section A: National Data System Coding (i.e., PCS)
Transaction Code NPDES yr/mo/day Inspection Type Inspector Fac Type
1 INI 2 151 31 N00055786 I11 121 10/12/09 117 181CI 191SI 20LL
Remarks
211111IIII IIII IIII IIII IIII IIII IIIIIIII111111111116
Inspection Work Days Facility Self -Monitoring Evaluation Rating B1 QA ------------Reserved------
67 I 169 70 13 I 711 NJ 721 NJ 73' 174 751 I I I I I Li 80
W
Section B: Facility Data
Name and Location of Facility Inspected (For Industrial Users discharging to POTW, also include
Entry Time/Date
Permit Effective Date
POTW name and NPDES permit Number)
Lexington Regional WWTP
10:00 AM 10/12/09
09/08/01
Exit Time/Date
Permit Expiration Date
500 Glendale Rd
Lexington NC 27292
12:45 PM 10/12/09
14/04/30
Name(s) of Onsite Representative(s)/Titles(s)/Phone and Fax Number(s)
Other Facility Data
Joseph Charles Shaffer//336-357-5090 /
Name, Address of Responsible Official/Title/Phone and Fax Number
Contacted
Roger Allen Spach,28 W Center St Lexington NC 27292//336-243-2489/
No
Section C: Areas Evaluated During Inspection (Check only those areas evaluated)
Permit 0 Flow Measurement Operations & Maintenance E Records/Reports
Self -Monitoring Program 0 Sludge Handling Disposal Facility Site Review N Effluent/Receiving Waters
Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary)
(See attachment summary)
Name(s) and Signature(s) of Inspector(s) Agency/Office/Phone and Fax Numbers Date
Jenifer Carter WSRO WQ//336-771-5000/
Signature of Management Q A Reviewer Agency/Office/Phone and Fax Numbers Date
NC +v2- -;;,WN J,1 A/ Zo G j
EPA Form 3560-3 (Rev 9-94) Previous editions are obsolete.
Page # 1

NPDES yr/mo/day Inspection Type (cont.) 1
3I NCO055786 I11 12I 10/12/09 117 18ICI
Section D Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary)
Mr. Josehp C. Shaffer became ORC of the plant on June 4, 2010. Overall, the plant appears to be
maintained and operated properly.
There were problems noted with prelimnary treatment during the inspection, in particular with initial
screening. The mechanical bar screen was under repair, requiring the use of the manually bar screen. The
Clr;laii� Tpeehemieel bar screen was not sufficiently screening debris, as noted by the accumlation of trash in the
secondary clarifiers and beyond. The staff was handling the situation by manually raking trash out at
various points throughout the plant. No trash was observed at the discharge pipe or in the receiving
stream.
The plant will be reinspected in 6 months from the day of this inspection to verify that repairs have been
made and the clarifiers cleaned out.
Page # 2

Permit: NCO055786 Owner - Facility: Lexington Regional WWfP '
Inspection Date: 12/09/2010 Inspection Type: Compliance Evaluation
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/1)
Comment: DO monitored by auto -sensors at several locations.
Nutrient Removal
# Is total nitrogen removal required?
# Is total phosphorous removal required?
Type
# Is chemical feed required to sustain process?
Is nutrient removal process operating properly?
Comment:
Pumps-RAS-WAS
Are pumps in place?
Are pumps operational?
Are there adequate spare parts and supplies on site?
Comment:
Secondary Clarifier
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)
Yes No NA NE
■ ❑ ❑ ❑
■ ❑ ❑ ❑
■ ❑ ❑ ❑
Page # 6

• Permit: NC0055786
Inspection Date: 12/09/2010
Pump Station - Influent
Are float controls operable?
Is SCADA telemetry available and operational?
Is audible and visual alarm available and operational?
Comment:
Bar Screens
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?
Owner - Facility: Lexington Regional WWTP
Inspection Type: Compliance Evaluation
Comment: The mechanical bar screen was being bypassed during the inspection due
to ongoing repairs to belt. The manual bar screen being used has very wide spacing,
allowing a lot of trash through. Trash was being manually pulled out at various points
throughout the plant.
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?
Comment: screening are disposed of to the drying beds.
Aeration Basins
Mode of operation
Type of aeration system
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?
Yes No NA NE
■ ❑ ❑ ❑
nn■n
■❑n❑
Plug flow
Diffused
■ n n n
n❑■n
■nnn
■nnn
Page # 5

Permit: NCO055786 Owner - Facility: Lexington Regional WWTP
Inspection Date: 12/09/2010 Inspection Type: Compliance Evaluation
Influent Sampling
Is sample collected above side streams?
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)?
Is sampling performed according to the permit?
Comment:
Effluent Sampling
Is composite sampling flow proportional?
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)?
Is the facility sampling performed as required by the permit (frequency, sampling type representative)?
Comment:
Flow Measurement - Effluent
# Is flow meter used for reporting?
Is flow meter calibrated annually?
Is the flow meter operational?
Yes No NA NE
■nnn
■n❑n
■nnn
■nnn
■nnn
■n❑n
■nnn
■nnn
■nnn
(If units are separated) Does the chart recorder match the flow meter? n ❑ n ■
Comment:
Operations & Maintenance Yes No NA NE
Is the plant generally clean with acceptable housekeeping? ■ ❑ ❑ ❑
Does the facility analyze process control parameters, for ex: MLSS, MCRT, Settleable Solids, pH, DO, Sludge ■ n n n
Judge, and other that are applicable?
Comment: MLSS, SS, pH and DO monitored during every shift.
Pump Station - Influent Yes No NA NE
Is the pump wet well free of bypass lines or structures? ■ ❑ ❑ n
Is the wet well free of excessive grease? ■ n n n
Are all pumps present? ■ n n n
Are all pumps operable? ■ n n n
Page # 4

Permit: NCO055786 Owner - Facility: Lexington Regional WWTP
Inspection Date: 12/09/2010 Inspection Type: Compliance Evaluation
Permit
Yes
No
NA
N
(If the present permit expires in 6 months or less). Has the permittee submitted a new application?
0
El
■
❑
Is the facility as described in the permit?
■
n
n
n
# Are there any special conditions for the permit?
n
■
n
n
Is access to the plant site restricted to the general public?
■
n
n
n
Is the inspector granted access to all areas for inspection?
■
n
n
n
Comment: The trickling filters are not used, but can be reconnected if needed.
Effluent flow measurement is used for reporting.
Record Keeping
Yes
No
NA
NE
Are records kept and maintained as required by the permit?
■
n
n
n
Is all required information readily available, complete and current?
■
n
n
n
Are all records maintained for 3 years (lab. reg. required 5 years)?
■
n
n
n
Are analytical results consistent with data reported on DMRs?
■
n
n
n
Is -the chain -of -custody complete?
■
❑
❑
n
Dates, times and location of sampling
n
Name of individual performing the sampling
n
Results of analysis and calibration
Dates of analysis
n
Name of person performing analyses
n
Transported COCs
n
Are DMRs complete: do they include all permit parameters?
■
n
n
n
Has the facility submitted its annual compliance report to users and DWQ?
■
n
n
n
(If the facility is = or> 5 MGD permitted flow) Do they operate 24/7 with a certified operator on each shift?
■
n
n
n
Is the ORC visitation log available and current?
■
n
n
n
Is the ORC certified at grade equal to or higher than the facility classification?
■
n
n
n
Is the backup operator certified at one grade less or greater than the facility classification?
■
n
n
n
Is a copy of the current NPDES permit available on site?
■
n
Cl
n
Facility has copy of previous year's Annual Report on file for review?
■
n
n
n
Comment:
Influent Sampling
Yes
No
NA NE
# Is composite sampling flow proportional?
■
n
n
n
Page # 3

Permit: NC0055786
Inspection Date: 12/09/2010
Owner - Facility: Lexington Regional WWfP
Inspection Type: Compliance Evaluation
Secondary Clarifier Yes No NA NE
Comment: Due to failure of mechanical bar screen and insufficient screening with
back-up manual bar screen, there was an excessive amount of trash in both clarifiers,
some of which was escaping over the weirs. Trash was being removed manually with
rakes at several points downstream of the clarifiers. There was no trash observed at the
discharge point into surface waters.
Lagoons
Type of lagoons?
# Number of lagoons in operation at time of visit?
Are lagoons operated in?
# Is a re -circulation line present?
Is lagoon free of excessive floating materials?
# Are baffles between ponds or effluent baffles adjustable?
Are dike slopes clear of woody vegetation?
Are weeds controlled around the edge of the lagoon?
Are dikes free of seepage?
Are dikes free of erosion?
Are dikes free of burrowing animals?
# Has the sludge blanket in the lagoon (s) been measured periodically in multiple locations?
# If excessive algae is present, has barley straw been used to help control the growth?
Is the lagoon surface free of weeds?
Is the lagoon free of short circuiting?
Comment: This section used to evaluate the polishing ponds
Disinfection -Liquid
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:
0
Parallel
Yes No NA NE
Page # 7

Permit: NC0055786 Owner - Facility: Lexington Regional VWVfP
Inspection Date: 12/09/2010 Inspection Type: Compliance Evaluation
De -chlorination
Type 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:
Effluent Pipe
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?
Comment:
Anaerobic Digester
Type of operation:
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?
Comment: gas is delivered via pipeline from the city.
Solids Handling Equipment
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?
Yes No NA NE
Liquid
nn■n
■nnn
■nnn
nn■n
nn■n
Yes No NA NE
■nnn
■nnn
nn■o
Yes No NA NE
Floating cover
■ n n n
nn■n
■ n n n
■nnn
■nnn
Page # 8

Permit: NC0055786
Inspection Date: 12/09/2010
Owner - Facility: Lexington Regional W TP
Inspection Type: Compliance Evaluation
Solids Handling Equipment
Is the site free of excessive moisture in belt filter press sludge cake?
The facility has an approved sludge management plan?
Comment:
Standby Power
Is automatically activated standby power available?
Is the generator tested by interrupting primary power source?
Is the generator tested under load?
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?
Comment: three generators... tested monthly under load.
■nnn
■nnn
Page # 9

�Al co
THE 6TY OF LEXINGTON
NORTH °°° o'.:°'�CAROLINA
�?TNcaRov
"Serving The Community Since 1828"
Water Resources Department
28 W. Center Street
Lexington, NC 27292
April 21, 2010
s. Jennifer Carte
(] NC DE
<nston Salem Regional Office
585 Waughtown Street
Winston Salem, NC 27107-2241
Re: City of Lexington
Lexington Regional WWTP
Permit No. NCO055786
Davidson County
Subject: By -Pass of Treatment Unit
Dear Ms. Carter:
RECEIVED
N.C. Dept of ENR
APR 2 3 2010
i Winston-Salem
Regional Office
Telephone [phone]
Fax [phone]
As per my phone call on April 21, 2010, the City has bypassed its post aeration tank for
cleaning starting April 20, 2010 at 10:00 am. This work was completed and unit put back
in service at 10:00am on April 21, 2010.
1.: caus'-d no det.,ri: «r. cf .1 effl;zei.t. of flhis �:vcnt.
Please direct any questions regarding this to my attention at 336-248-3970.
Sincerely,
Roger Spach
cc: Rick Comer, Public Works Director
Kim Burkhart, Interim Utility Plant Supervisor

oLE
THE CITY OF x LEXINGTON '
NORTH caRcv~ CAROLINA
"Serving The Community Since 1828"
Water Resources Department
28 W. Center Street
Lexington, NC 27292
March 11, 2010
nnife arter
Winston Salem Regional Office
585 Waughtown Street
Winston Salem, NC 27107-2241
Re: City of Lexington
Lexington Regional WWTP
Permit No. NCO055786
Davidson County
Subject: By -Pass of Treatment Unit
Dear Ms. Carter:
RECEIVED
N.C. dept. of ENR
MAR 15 2010
Winston-Salem
Regional Office
Telephone [phone]
Fax [phone]
As per my phone call on March 10, 2010, the City has bypassed its chlorine contact tank
for cleaning starting March 10, 2010 at 8:00 am. One half of the chlorine tank was
cleaned at a time. This work is completed and unit put back in service at 1:00pm on
3/10/2010.
This caused no deterioration of the effluent because of this event.
Please direct any questions regarding this to my attention at 336-248-3970.
Sincerely,
Roger Spach
cc: Rick Comer, Public Works Director
Kim Burkhart, Interim Utility Plant Supervisor

o� LE
THE CITY OF LEXINGTON
�O 1'4 �•yo �h4��
NORTH �'T0,o1 1 CAROLINA
"Serving The Community Since 1828"
Water Resources Department
28 W. Center Street
Lexington, NC 27292
October 6, 2009
s. Jenn1 " arter
N R
Winston Salem Regional Office
585 Waughtown Street
Winston Salem, NC 27107-2241
Re: City of Lexington
Lexington Regional WWTP
Permit No. NCO055786
Davidson County
Subject: By -Pass of Treatment Unit
Dear Ms. Carter:
F�,a;cnal Office
Telephone [phone]
Fax [phone]
As per my phone call on October 5, 2009, the City has bypassed its # 1 final clarifier
starting October 5, 2009 at 8:00 am. This was to repair the scum beach. This work is
completed and unit put back in service at 3:00pm on 10/6/09.
This caused no deterioration of the effluent because of this event.
Please direct any questions regarding this to my attention at 336-248-3970.
Sincerely,
relw-
Roger Spach
cc: Rick Comer, Public Works Director
Kim Burkhart, Interim Utility Plant Supervisor

LE
THE CITY OF LEXINGTON
NORTH °�T°caRov�� CAROLINA
"Serving The Community Since 1828"
Water Resources Department
28 W. Center Street
Lexington, NC 27292
October 5, 2009
Jennifer Carter
DENR /
Winsto -ate'm Regional Office
585 Waughtown Street
Winston Salem, NC 27107-2241
Re: City of Lexington
Lexington Regional WWTP
Permit No. NCO055786
Davidson County
Subject: -By-Pass of Treatment Unit
Dear Ms. Carter:
qRECE1VED
Dept of ENR
0 7 2M
ston-Salem
Regional Office
Telephone [phone]
Fax [phone]
As per my phone call on October 5, 2009, the City has bypassed its #1 final clarifier
starting October 5, 2009 at 8:00 am. This was to repair the scum beach.
This should cause no deterioration of the effluent because of this event.
Please direct any questions regarding this to my attention at 336-248-3970.
Sincerely, ,
Fpy_�, 5�_
Roger Spach
cc: Rick Comer, Public _Works Director
Kim Burkhart, Interim Utility Plant Supervisor

ILI
�k " ,moo
THE CITY OF z LEXINGTON
NORTH °�T°�Agoy�� CAROLINA
"Serving The Community Since 1828"
Water Resources Department
28 W. Center Street
Lexington, NC 27292
June 24, 2009
M . Je�.arter
NC DENR
Winston Salem Regional Office
585 Waughtown Street
Winston Salem, NC 27107-2241
Re: City of Lexington
Lexington Regional WWTP
Permit No. NCO055786
Davidson County
Subject: By -Pass of Treatment Unit
Dear Ms. Carter:
RECEIVED
N.C. D.
of ENR
JUN 2 9 20M
Winston-Salem
Regional Office
Telephone [phone]
Fax [phone]
As per my phone call on June 24, 2009, the City has bypassed its chlorine contact
chambers, one at a time starting June 24, 2009 at 8:00 am and completed on June 24,
2009 at 2:30 pm. This was to clean out the chambers.
There was no deterioration of the effluent because of this event.
Please direct any questions regarding this to my attention at 336-248-3970.
Sincerely,
now � -
Roger Spach
cc: Rick Comer, Public Works Director
Kim Burkhart, Interim Utility Plant Supervisor

OLE
THE CITY OF ° ' LEXINGTON
NORTH ° caRcv~ CAROLINA
"Serving The Community Since 1828"
Water Resources Department
28 W. Center Street
Lexington, NC 27292
April 22, 2009
s. Jennifer Ca P
Winston Salem Regional Office
585 Waughtown Street
Winston Salem, NC 27107-2241
Re: City of Lexington
Lexington Regional W WTP
Permit No. NCO055786
Davidson County
Subject: By -Pass of Treatment Unit
Dear Ms. Carter:
[RECEIVED
N.C. Deot. of ENR
APR 2 4 2009
Winston-Salem I
Regional Office
Telephone [phone]
Fax [phone]
As per my phone call on April 17, 2009, the City has bypassed its post aeration chamber,
one at a time starting April 17, 2009 and completed on April 22, 2009. This was to clean
out the chamber.
There was no deterioration of the effluent because of this event.
Please direct any questions regarding this to my attention at 336-248-3970.
Sincerely,
Roger Spach
cc: Rick Comer, Public Works Director
Kim Burkhart, Interim Utility Plant Supervisor

tik CEO
THE CITY OF LEXINGTON
NORTH ' °°caaw~ CAROLINA
"Serving The Community Since 1828"
Water Resources Department
28 W. Center Street
Lexington, NC 27292
April 7, 2009
. " . Jennifer .x
N
Winston Salem Regional Office
585 Waughtown Street
Winston Salem, NC 27107-2241
Re: City of Lexington
Lexington Regional WWTP
Permit No. NCO055786
Davidson County
Subject: By -Pas$ Treatment
Dear Ms. Carter:
RECEIVED
N.C. Dept. of ENR
APR 0 9 2009
Winston-Salem,
Regional Office
Telephone [phone]
Fax [phone]
As per my phone call on April 7, 2009, the City has bypassed both sides of its chlorine
contact chamber, one at a time starting April 6, 2009 and completed on April 7, 2009.
This was to clean the individual sides.
There was no deterioration of the effluent because of this event.
Please direct any questions regarding this to my attention at 336-248-3970.
Sincerely,
7�Z,5 Q--C��
Roger Spach
cc: .Rick Comer,. Public. Works Director
Kim Burkhart, Interim Utility Plant Supervisor

0 LE
�o
THE CITY OF LEXINGTON
NORTH cARoti� CAROLINA
"Serving The Community Since 1828"
Water Resources Department
28 W. Center Street
Lexington, NC 27292
February 27, 2009
Ms. Jennifer Carter
NC DENR
Winston Salem Regional Office
585 Waughtown Street
Winston Salem, NC 27107-2241
Re: City of Lexington
Lexington Regional WWTP
Permit No. NCO055786
Davidson County
Subject: By -Pass Treatment
Dear Ms. Carter:
Telephone [phone]
Fax [phone]
As per my phone call on February 9, 2009, the City has bypassed train A of its BNR
system starting February 9, 2009 until completed. This was to repair the recirculation
pump. The unit was put back into service at 7 A.M. on February 25, 2009
There was no significant deterioration of the effluent because of this event.
Please direct any questions regarding this to my attention at 336-248-3970.
Sincerely,
Roger Spach
cc:. Rick Comer, Public Works Director
Kim Burkhart, Interim Utility Plant Supervisor

�Al M ir
THE CITY OF ° ' x LEXINGTON
NORTH caRov CAROLINA
"Serving The Community Since 1828"
Water Resources Department
28 W. Center Street
Lexington, NC 27292
February 10, 2009
Ms. nif
NC DENR
Winston Salem Regional Office
585 Waughtown Street
Winston Salem, NC 27107-2241
Re: City of Lexington
Lexington Regional WWTP
Permit No. NCO055786
Davidson County
Subject: By -Pass Treatment
Dear Ms. Carter:
__RECEIVED
D
N.C. Dept of ENR
FEB 1 1 2009
Yd:a sto,I-S a I em
Regional Of►ice
Telephone [phone]
Fax [phone]
As per my phone call on February 9, 2009, the City has bypassed train A of its BNR
system starting February 9, 2009 until completed. This is to repair the recirculation
pump.
There should be no deterioration of the effluent because of this event.
Please direct any questions regarding this to my attention at 336-248-3970.
Sincerely,
Roger Spach
cc: Rick Comer, Public Works Director
Kim Burkhart, Interim Utility Plant Supervisor

"ICEIVE9
N.C. Dept. Qf ENA
THE CITY OF ° � ; 1 LEXINGTON
NORTH wA" CAROLINA
�k CAR�v
"Serving The Community Since 1828"
Water Resources Department
28 W. Center Street
Lexington, NC 27292
September 12, 2008
Mr. Steve Tedder
NC DENR
Winston Office
585 Waughtown Street
Winston Salem, NC 27107-2241
SEP 1 5 2008
wtnstan-Salem
Ht 1iiPnel Office
Telephone [phone]
Fax [phone]
Re: City of Lexington Regional Wastewater Treatment Plant — NCO055786
Compost Facility — WQ0001318
Davidson County
Subject: Using Effluent to Backwash the Belt Press at Our Compost Facility
Dear Mr. Tedder:
This is to confirm a phone conversation with Ms. Jennifer Carter of the WSRO on
September 11, 2008.
Presently, the City is using potable water to operate the belt press at its compost facility.
This unit uses 750,000 gallons or more per month of water. It is our intention to install a
pump at the overflow of the chlorine contact tank to pump effluent to the compost facility
for use on the belt press. This is a water conservation issue and will have no impact on
the operation of the wastewater treat treatment plant other than to replace the potable
wafer used U11 the oelt press. There will uc; SuinC reuuc;iion ltl CI iUeill tLc,V, V "r gvl,;i ;lul
this is negligible when compared to the plant capacity of 6.5 MGD.
The system that we intend to install is detailed below. Material procurement and
installation will be done with city forces.
Pump
Berkley B 2 ZPLS 15 hp 3PZ electric pump and motor designed for 115 gpd Cce 103 PSI
Screen
Sure Flow self cleaning rotating suction screen with stainless steel mesh (reject water and
solids will be returned to the head of the treatment plant)

Pipe
4" SDR21 200 PSI Gasket PVC Purple Pipe
Storage Tank
12,000 gallon medium density linear polyethylene tank (1.9 specific gravity). Installed
on a pad adjacent to the compost facility so that overflows will go into a drain and be
returned to the wastewater plant. There will be an emergency potable water line to feed
the tank with an air gap. Water will be pumped from the tank to the belt press from the
existing washwater pump.
Drawings appropriate to this installation are attached.
Per my phone conversation with Ms. Carter, an ATC will not need to be issued for this
installation. If you will, please confirm this or let me know how to proceed.
Sincerely,
Roger Spach
cc: Jennifer Carter, WSRO
Rick Comer, Public Works Director
Kim Burkhart, Plant Supervisor

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r
F
y
4
NQ
61
Mgt *06
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bib ►�3r j.-- • �.��""' .
641
6A,CN
lie
Lk Aw
� , E~•^tea_ � � a � � �. r� r 7 `�` ti4.�
AV
AW
Y
YYY ,
:+ , +ti ump and filter
��Ut oa� r
n '.L �'-.iR�. `MS � w_ , • iU �7 �"` 4.'ffluent l
ri - Mani:RIP
640 r
� r x
Cell
f
• J-'! i _ �+ ter' <J

Estimate that we will be using three plug valves
stal lati"on %vI
I n
16.5 storage tank
46'

�LE
THE CITY OF ° ' x LEXINGTON
NORTH°+�j °a• °'''•� CAROLINA
' �Y CAR�v
"Serving The Community Since 1828"
Water Resources Department
28 W. Center Street
Lexington, NC 27292
June 12, 2008
zs. Jennifer C r
NC DENR
Wirlstol Salem Regional Office
585 Waughtown Street
Winston Salem, NC 27107-2241
Re: City of Lexington
Lexington Regional WWTP
Permit No. NCO055786
Davidson County
Subject: By -Pass Treatment
Dear Ms. Carter:
RECEIVED
N.C. Dept of ENR
JUN 16 20
Winston-Salem
Regional Office
Telephone [phone]
Fax [phone]
As per my phone call on June 12, 2008, the City had its grit chamber bypassed from
8:00pm on June 11, 2008 until 10:00am on June 12, 2008. This was to repair the grit
chamber drive motor.
There was no deterioration of the effluent after this event.
Please direct any questions regarding this to my attention at 336-248-3970.
Sincerely,
J�
Roger pach
cc: Rick Comer, Public Works Director
Kim Burkhart, Interim Utility Plant Supervisor

OLE
THE CITY OF °' LEXINGTON h N.CRps�EN
1, _ , .,• R
NORTH °ca I CAROLINA I FEB 14 2W8
"Serving The Community Since 1828"
Water Resources Department
28 W. Center Street
Lexington, NC 27292
February 13, 2008
lWinsto
Jennifer barter
DENR
em Regional Office
Waughtown Street
Winston Salem, NC 27107-2241
Re: City of Lexington
Lexington Regional WWTP
Permit No. NCO055786
Davidson County
Subject: By -Pass Treatment
Dear Ms. Carter:
WinetonSalern
Regional p��
Telephone (336) -�970
Fax [phone]
As per my phone call on February 12, 2008, the City had Train B of its BNR system off
line from 8:00am until 3:1 Opm. This was to clean diffusers in the reairation tank.
There was no deterioration of the effluent after this event.
Please direct any questions regarding this to my attention at 336-248-3970.
Sincerely,
Roger pach
cc: Rick Comer, Public Works Director
John Holland, Utility. Plant Supervisor

�Al o
THE CITY OF LEXINGTON
NORTH ° ^° ova CAROLINA
8 cnR
"Serving The Community Since 1828"
Water Resources Department
28 W. Center Street
Lexington, NC 27292
October 23, 2007
`Ms.__J_c Carter
ENR
Winston Salem Regional Office
585 Waughtown Street
Winston Salem, N.C. 27107-2241
Re: City of Lexington
Regional WWTP — NCO055786
Davidson County
Subject: Bypass of Treatment Unit
Dear Ms. Carter:
RECEIVED
N.C. Dent of ENR
OCT 2 5 2M7
Winston-saie,rn
Regional ice
Telephone [phone]
Fax [phone]
Per my phone call on October 22, 2007, we have been bypassing one of the treatment
units at the Regional WWTP.
On Thursday, October 18, 2007 at 7:30 A.M., we bypassed our effluent aeration unit for
cleaning. The cleaning will be completed and the unit put back in service by 4:00 P.M.
on October 23.
I anticipate no deterioration of the treatment plant's effluent due to this work.
Please direct any questions regarding this to my attention at 336-248-3970.
Sincerely,
Roger Spach
cc: Rick Comer, Public Works Director
John Holland, Utility Plant Supervisor

O� LE FRECEIVED
��,'� 0 of ENR
U x 7 2007
THE CITY OF LEXINGTONNORTHy~CAROLINA Salem
Regional Office
"Serving The Community Since 1828"
Water Resources Department
28 W. Center Street
Lexington, NC 27292
October 16, 2007
s. Jennif r arter
1 �R
Winston Salem Regional Office
585 Waughtown Street
Winston Salem, N.C. 27107-2241
Re: City of Lexington
Regional WWTP — NCO055786
Davidson County
Subject: Bypass of Treatment Units
Dear Ms. Carter:
Telephone [phone]
Fax [phone]
Per my phone call on October 16, 2007, we have been bypassing one of the treatment
units at the Regional WWTP.
On Monday, October 15, 2007, we bypassed our grit chamber for cleaning. The unit was
bypassed from 4:15 P.M. until 7:00 P.M.
T anticipate no deterioration of the treatment plant's effluent t111,2 10 this i ork.
Please direct any questions regarding this to my attention at 336-248-3970.
Sincerely,
Roger Spach
cc: Rick Comer, Public Works Director
John Holland, Utility Plant Supervisor

oLE
SA.
THE CITY OF LEXINGTON
NORTH �rN cARov~ CAROLINA
"Serving The Community Since 1828"
Water Resources Department
28 W. Center Street
Lexington, NC 27292
October 1, 2007
Ms. Jennifer Carter
NC DENR
Winston Salem Regional Office
585 Waughtown Street
Winston Salem, N.C. 27107-2241
Re: City of Lexington
Regional WWTP — NCO055786
Davidson County
Subject: Bypass of Treatment Units
Dear Ms. Carter:
Telephone [phone]
Fax [phone]
RECEIVED i
N.C. Deot. of ENR
OCT 0 3 2007
W'nston•Salem
Regional Omce
Per my phone call on October 1, 2007, we have been bypassing one of the treatment units
at the Regional WWTP.
On Monday, October 1, 2007, we bypassed one side of our chlorine contact tank to drain
it and wash it out. This started at 6:30 A.M. and was vanished by 12:30 P.M.
I anticipate no deterioration of the treatment plant's effluent due to this work.
Please direct any questions regarding this to my attention at 336-248-3970.
Sincerely,
/i��
Roger Spach
cc: Rick Comer, Public Works Director
John Holland, Utility Plant Supervisor

o� LEacil,
THE CITY OF x LEXINGTON
NORTH caRov� CAROLINA
"Serving The Community Since 1828"
Water Resources Department
28 W. Center Street
Lexington, NC 27292
August 21, 2007
iinston
JL:3nifer Cart DEN Salem Regional Office
585 Waughtown Street
Winston Salem, N.C. 27107-2241
Re: City of Lexington
Regional WWTP — N00055786
Davidson County
Subject: Bypass of Treatment Units
Dear Ms. Carter:
Telephone [phone]
Fax [phone]
RECEIVED
r..,..._.,1 Ess
AUG 2 3 2007
Winston-Salem
Regional Office
Per my phone call on August 16, 2007, we have been bypassing one of the treatment
units at the Regional WWTP.
On Thursday, August 17 one of the two effluent polishing lagoons was being bypassed.
This was necessary due to high effluent BOD results and cleaning. The lagoon was
bypassed on August 17 at 12:30 P.M.
I anticipate no deterioration of the treatment plant's effluent due to this work.
Please direct any questions regarding this to my attention at 336-248-3970.
Sincerely,
Roger Spach
cc: Rick Comer, Acting Public Works Director
John Holland, Utility Plant Supervisor

~ x
THE CITY OF * ' LEXINGTON
NORTH cARovti CAROLINA
"Serving The Community Since 1828"
Water Resources Department
28 W. Center Street
Lexington, NC 27292
August 2, 2007
MWER
arter
Winston Salem Regional Office
585 Waughtown Street
Winston Salem, N.C. 27107-2241
Re: City of Lexington
Regional WWTP — NCO055786
Davidson County
Subject: Bypass of Treatment Units
Dear Ms. Carter:
R�: CEIVE
t of ENR
AUG 06 2V
,nSalem
..,Ionai Office
Telephone [phone]
Fax [phone]
Per my phone call on July 30, 2007, we have been bypassing one of the treatment units at
the Regional WWTP.
On Friday, July 27 one of the two effluent polishing lagoons was been bypassed. This
was necessary due to high effluent BOD results and cleaning. The lagoon was bypassed
from 11:30 A.M. on 7/27/07 until 2:00 P.M on 8/1/07.
I anticipate no deterioration of the treatment plant's effluent due to this work.
Please direct any questions regarding this to my attention at 336-248-3970.
Sincerely,
Roger Spach
cc: Rick Comer, Acting Public Works Director
John Holland, Utility Plant Supervisor

RECEIVED
LExf� N.C. Deot of ENR
Al �o JUL 3 0 2007
THE CITY OF z LEXINGTON wlneton-Salem
Regional office
NORTH °�T °� t° ov�� CAROLINA
h CAR
"Serving The Community Since 1828"
Water Resources Department
28 W. Center Street
Lexington, NC 27292
July 27, 2007
�J
s. Jennifer Ca
Winston Salem Regional Office
585 Waughtown Street
Winston Salem, N.C. 27107-2241
Re: City of Lexington
Regional WWTP — NCO055786
Davidson County
Subject: Bypass of Treatment Units
Dear Ms. Carter:
Telephone [phone]
Fax [phone]
Per my phone call on July 26, 2007, we have been bypassing one of the treatment units at
the Regional WWTP.
On Thursday, July 26 one of the two chlorine contact tanks was been bypassed. This was
necessary for repair and cleaning. The contact tank was bypassed from 8:00 A.M. until
2:30 P.M. During this time, the chlorine residual was increased to insure disinfection.
I anticipate no deterioration of the treatment plant's effluent due to this work.
Please direct any questions regarding this to my attention at 336-248-3970.
Sincerely,
Roger Spach
cc: Rick Comer, Acting Public Works Director
John Holland, Supervisor

�0 LE
THE CITY OF * ' z LEXINGTON
NORTH cti CAROLINA
"Serving The C
Water Resources Department
28 W. Center Street
Lexington, NC 27292
May 21, 2007
(,,,- Ms. Jennifer Carter /
N.C. DENR '
aughtown Street
Winston Salem, N.C. 27107-2241
Re: City of Lexington
Regional WWTP — NCO05 5786
Davidson County
Subject: Bypass of Treatment Units
Dear Ms. Carter:
RECE11. --r
N.C. Or -
MAY 2 3 207
Win
Reg.
Telephone [phone]
Fax [phone]
Per my letter of April 27, 2007, we have been bypassing one of our polishing lagoons in
order to clean out sludge accumulations. This has been completed and the lagoon has
been put back in service.
During this cleaning our effluent has averaged above our 5 mg/1 monthly limit for BOD
concentrations. Honefi:lly, we will 11a.7e 1nw enougb BOT) concentrations for the
remainder of the month to meet our monthly limit.
Sincerely,
Roger Spach
cc: Rick Comer, Acting Public Works Director
John Holland, Utilities Plant Supervisor

o� LE
THE CITY OF * ' LEXINGTON
NORTH cARov~ CAROLINA
"Serving The Community Since 1828"
Water Resources Department
28 W. Center Street
Lexington, NC 27292
April 27, 2007
s Jennifer C
NC DEN
n Salem Regional Office
585 Waughtown Street
Winston Salem, N.C. 27107-2241
Re: City of Lexington
Regional WWTP — NCO05 5 7 8 6
Davidson County
Subject: Bypass of Treatment Units
Dear Ms. Carter:
R[Ct'!=_o
N.C. _ ' `ENR
MAY 0 1 2007
Telt'phone.:{3 ) 248-3970
- Fax [phone]
Per my phone call on April 27, 2007, we are bypassing one of the treatment units at the
Regional WWTP.
Effective Friday, April 271h, the #2 effluent polishing lagoon has been bypassed. This
lagoon is being cleaned of accumulated sludge. It should be out of service for one to two
weeks.
I anticipate no deterioration of the treatment plant's effluent due to this work.
Please direct any questions regarding this to my attention at 336-248-3970.
Sincerely,
Roger pach
cc: Rick Comer, Acting Public Works Director

O� LE
THE CITY OF ° ' LEXINGTON
2�a9'��o
NORTH 0" cnRw~ CAROLINA
"Serving The Community Since 1828"
Water Resources Department
28 W. Center Street
Lexington, NC 27292
April 12, 2007
Ms. Jennifer Carter
NC DENR
Winston Salem Regional Office
585. Waughtown Street
Winston Salem, N.C. 27107-2241
Re: City of Lexington
Regional WWTP — NCO055786
Davidson County
Subject: Bypass of Treatment Unit
Dear Ms. Carter:
Telephone [phone]
Fax [phone]
Per my phone call on April 3, 2007, we were bypassing one to the treatment units at the
Regional WWTP.
Effective Monday, April 2"d, the #1 effluent polishing lagoon was bypassed. This lagoon
was cleaned of accumulated sludge and was returned to service on April 12, 2007.
There was no deterioration of the treatment plant's effluent due to this work.
Please direct any questions regarding this to my attention at 336-248-3970.
Sincerely,
Roger Spach
cc: Rick Comer, Acting Public Works Director

THE CITY OF LEXINGTONj
NORTH °�°caRotiti' CAROLINA
"Serving The Community Since 1828"
Water Resources Department
28 W. Center Street
Lexington, NC 27292
April 4, 2007
Ms. Jennifer Carte
NC DENR
ins Clem Regional Office
585 Waughtown Street
Winston Salem, N.C. 27107-2241
Re: City of Lexington
Regional WWTP — NCO055786
Davidson County
Subject: Bypass of Treatment Unit
Dear Ms. Carter:
Telephone [phone]
Fax [phone]
Per my phone call on April 3, 2007, we are bypassing one of the treatment units at the
Regional WWTP.
Effective Monday, April 2"d, the #1 effluent polishing lagoon has been bypassed. This
lagoon is being cleaned of accumulated sludge. It should be out of service for one to two
Weeks.
I anticipate no deterioration of the treatment plant's effluent due to this work.
Please direct any questions regarding this to my attention at 336-248-3970.
Sincerely,
1
Roger Spach
cc: Rick Comer, Acting Public Works Director

RECEIVED
O� LEXI�C N.C. Dept of ENR
THE CITY OF LEXINGTON APR 13 2006
NORTH °� °�•�R.aR tip CAROLINA Regional 0'� ,
�NCAROv Regional (?`fica
"Serving The Community Since 1828"
Water Resources Department
28 W. Center Street
Lexington, NC 27292
April 12, 2006
Mr. Steve Mauney
N.C. DEN
mston Salem Regional Office
585 Waughtown Street
Winston Salem, N.C. 27107-2241
Re: City of Lexington
Davidson County
Lexington Regional WWTP
Permit #NC 0055786
Subject: By -Pass of Treatment Units
Dear Mr. Mauney:
Telephone [phone]
Fax [phone]
This is to confirm our previous conversation. The #1 final clarifier at our Regional
WWTP will be out of service for approximately 30 days. We have had a bearing failure
on this unit necessitating emergency repair. This failure should not compromise the
planfs ability to meet limits of its NPDES permit.
Please direct any questions regarding this to my attention at 336-248-3970.
Sincerely,
Roger Spach
RS/kb
cc: Rick Austin
Ken Cupp

0
.�eu ✓ o
THE CITY OF ° : x LEXINGTON
NORTH cARov� CAROLINA
"Serving The Community Since 1828"
Water Resources Department
28 W. Center Street
Lexington, NC 27292
March 24, 2006
Mr. Steve Mauney
NC DENR
Winston Salem Regional Office
585 Waughtown Street
Winston Salem, N.C. 27107-2241
Re: City of Lexington
Regional WWTP — NCO055786
Davidson County
Subject: By -Pass of Treatment Units
Dear Mr. Mauney:
This is to confirm our phone conversation of 3/22/06.
MAR 2 7 2006
Telephone [phone]
Fax [phone]
On that day, at 8:30am, Lexington's staff took the #1 final clarifier off line for scheduled
repairs. The repairs were completed and the clarifier was put back in service by 2:30pm
on 3/23/06.
Please forward any comments to my attention at 336-248-3970.
Sincerely,
Roger Spach
RS/kb'
cc: Ken Cupp
Rick Austin

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January 12, 2010
System Performance Annual Report - 2009
Lexington Regional WWTP
I. General Information:
(A) Name of Regulated Entity: Lexington Regional WWTP
(B) Responsible person: Roger Spach, Water Resources Superintendent
City Of Lexington
28 West Center Street
Lexington, NC 27292
(C) Applicable Permit: NCO055786
RECEIVED
N.C. Deot. of ENR
JAN 2 12010
Winston-salern
Regional Office
(D) Description of treatment process: The Lexington Regional WWTP is a wastewater
treatment facility consisting of influent pump stations; flow measurement; mechanical
bar screens; grit collection; primary clarifiers; roughing filters-, aeration basins,•
secondary clarifiers; post aeration basins; chlorination contact chamber; anaerobic
digesters,• and sludge drying beds with a composting facility located at 500 Glendale Road
, south of Lexington in Davidson County. The plant discharges into the Abbott's Creek
arm of High Rock Lake which is classified Class WS-III and B waters in the Yadkin -Pee
Dee River Basin.
II. Performance:
(A) Description of overall 12 month performance: With the following exceptions this
treatments sum performed in full compliance for all 12 months of 2009.
(B) Violations:
(1) Permit Limit Violations: none
(2) Monitoring and Reporting Violations: none
(3) Illegal Bypasses of Treatment Facilities: none
(4) Sanitary Sewer Overflows: none
(C) Known Environmental Impact of Violations: none
o C f@57,PoWIN
Q
JAN 142010
ENR-WATER QUALITY
POINT SOURCE BRANCH

(D) Description of corrective measures taken to correct violations or deficiencies:
Not applicable
III. Notification: This document is available for review by the public at the Water Resources
Administrative Office at 711 Talbert Boulevard. Public notification of the availability of this
document will be made by notice in the local news paper The Dispatch in February, by
advertisement on the City's cable access channel, and by presentation to the Lexington Utilities
Commission on February 1 2010. Notice of this document' s availability will be mailed to all of
the City of Lexington's utility customers in February of 2010.
IV. Certification:
The information in this report was prepared by me and is accurate and complete to the
best of my knowledge:
ater Resources Superintendent date:/ z /v
Roger Spa

lc/Yo /fws��e h/�4y
Pease Associates
,' Post Office Box Blvd.
♦ Pe a s e 2925 East Independence Blvd.
' Charlotte, NC 28218
Phone [phone]
Architects— Engineers Fax [phone]
P+w i
ABEEGGy::���+�f•�1.+IM�YVA�ti��IrivCRC: +S'1"f.+�i�-JT #;
June 28, 2005
NCDENR/DWQ
NPDES Unit
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
JUL 0 6 2005
Wlnstcn•Sal2T
Region
Reference: Lexington Regional WWTP Upgrade
Davidson County, North Carolina
Project No. 055786A01
Pease Associates' Commission No. 2002019.01
Subject: Engineer's Certification
Dear Gentlemen:
Attached is the subject Certification for the referenced project.
If you have any questions please fee free to call me.
Sincerely,
A. Keith West, P.E.
Executive Vice President
Chief Operating Officer
AKW:mbb
Enclosures
cc: Mr. Roger Spach, City of Lexington
Mr. Don Garbrick, Pease Associates
NA2002019-01 \CFile\Ph5\Review-Approve\2002019015011NPDESUnit062805akw.doc
7)
T0
1 PJ 3 0 2005
Ju -
Fa, YI'f SCi -'CE �itiriNCN
Over 60 years of architectural and engineering design excellence

City of Lexington
Lexington Regional WWTP
Permit No. NC0055786
ENGINEER'S CERTIFICATION
FOR
CONSTRUCTION OF WASTEWATER TREATMENT FACILITIES
I, A ffon ^ e- n"/ 41e.s / am a duly registered Professional Engineer
(please print)
in the State of North Carolina and have been authorized to observe (circle one: full-time, weekly,
periodically) the construction of the subject project for the Permittee:
Project No.: 055786A01
Project: WWTP Upgrade
Location: Lexington Regional WWTP
South of Lexington
Davidson County, North Carolina
The project consists of:
• alterations of the existing activated sludge treatment system to provide biological nutrient removal
(AZ/O Process with Secondary Anoxic Zone), including:
• creation of separate anaerobic, anoxic, and aerobic treatment zones;
• addition of internal `recirculation pumps and piping;
• addition of variable -frequency drives for recirculation and RAS pumps;
• upgrades of blower and blower piping;
• conversion of aeration systems to fine -bubble aeration; and
• addition of new re -aeration tanks; and
• construction and installation of:
• a new influent screening facility, including,mechanical bar screen and Parshall flume;
• a post -aeration facility;
• chemical storage and feed_ facilities (including those necessary for phosphorus removal);
• a dissolved air floatation (DAF sludge thickening system;
• _a solids contact reactor;
• control/pump building;
• a sludge filtrate pumping facility; and
• all related structures, equipment, piping, controls, and other appurtenances, as presented in the
proposed plans and specifications; and
• abandonment of the existing roughing filters, the filter recirculation pump station, and related
piping and other appurtenances;
as presented in the approved plans and specifications.
I hereby certify that I did regularly observe this project with due care and diligence and that the
construction was completed in substantial conformance with the Authorization to Construct and with the
approved plans and specifications.
Date �/2elO 5 Registration No.
C
"I , --' thOett,
Upon completion of construction and prior to operation of the modified f clItIM Permittee shall provide the Division with a
certification from a professional engineer certifiling that the permitted facility has been installed in accordance with the NPDES
Permit, this Authorization to Construct, and the approved plans and specifications.
The Certification should be submitted to:
NCDENRIDWQ, NPDES Unit, 1617 Mail Service Center, Raleigh, North Carolina 27699-1617

0.
A*A
NCDENR
JAMES B. HUNTJR.
GOVERNOR
WAYNE MCDEVITT
SECRETARY
NORTH CAROLINA DEPARTMENT OF
ENVIRONMENT AND NATURAL RESOURCES
WINSTON-SALEM REGIONAL OFFICE
DIVISION OF WATER QUALITY
May 17, 1999
MEMORANDUM
To: Mr. Tom Belnick, DES Unit
Through: �Larry Coble, W O Supervisor
k
From: Jennifer Serafin Frye
Subject: ATC Request 055786ACC
Lexington Regional WWTP
NCO055786
Davidson County
The Winston-Salem Regional Office supports The City of Lexington's decision to
phase out the use of chlorine at its Regional WWTP and install Bleach Storage and
Bleach Feed Facilities. This Office believes that this change will provide sufficient
effluent disinfection and be beneficial to the operation of the WWTP.
This Office recommends that the City of Lexington Regional WWTP be authorized to
construct their proposed Bleach Storage and Bleach Feed Facilities.
585 WAUGHTOWN STREET, WINSTON-SALEM, NORTH CAROLINA 27107
PHONE[phone] FAX[phone]
AN EQUAL OPPORTUNITY / AFFIRMATIVE ACTION EMPLOYER - 50% RECYCLED/10% POST -CONSUMER PAPER