NC0021474_Fact Sheet_20060918

DENR/DWQ
FACT SHEET FOR NPDES PERMIT DEVELOPMENT
NPDES No. NCO21474
Applicant/Facility Name:
Applicant Address:
Facility Address:
Permitted Flow
Type of Waste:
Facility/Permit Status:
�Keceiving Stream:
Stream Classification:
303(d) Listed?
Subbasm
Drainage Area (mi):
Summer 7Q10 (cfs)
Winter 7Q10
Average Flow (cfs):
IWC (%):
Facility Information
City of Mebane / Mebane WWTP
106 E. Washington St, Mebane, NC 27302
635 Corrigidor Road, Mebane, NC 27302
2.5 MGD
Domestic ( 94 %) / Industrial ( 6
Class 4 / Renewal
Alamance County
Miscellaneous
Moadams Creek
C-NSW
Nam_
03-0603-06-02
0.9 -
0.0
0.
0.8
9
Regional Office:
State Grid
� Perinit Writer:
Date:
Winston-Salem
Mebane_
Teresa Rodriguez
3/31/0
AAW)
Lat. 360 05' 26" N Long. 79° ] 7' 14" W
SUMMARY
The City of Mebane operates a 2.5 MGD wastewater treatment facility consisting of a bar screen,
grit chamber, aeration basin, three clarifiers, two sand filters, chlorine contact basin, sulfur
dioxide dechlorination, rotary drum thickener, sludge holding tank and two aerobic digesters.
There have been no changes to the treatment system since the last permit renewal.
Pretreatment — The city has an approved pretreatment program with 6 non categorical SILT and 5
categorical industrial users. The permitted flow for the pretreatment program is 0.151 MGD. The
city will continue to implement the approved pretreatment program.
Basin Plan — Moadams Creek from source to Back Creek (4.6 miles) is Not Rated for recreation
because the fecal coliform bacteria screening criteria were exceeded at two sampling sites. DWQ
will determine if intensive sampling is needed to assess the fecal coliform bacteria standard in
this creek.
Reasonable Potential Analysis — A reasonable
chromium, copper, cyanide, fluoride, mercul
fluoride, mercury and zinc h
potential analysis was performed for cadmium,
selenium,y, nickel, zinc. Co er
s owed reasonable potential toexceed water quality standards. No
limits will be implemented for copper and zinc since they are action level standards. Mercury
will be limited in the proposed permit. The limit for fluoride will remain in the permit.
Compliance review — Flow averaged 0.978 MGD over the last two years. BOD averaged 2.22
mg/L, total suspended solids averaged 2.24 mg/L and ammonia averaged 0.97 mg/L. Toxicity
failures were reported in April, May, and June of 2004. An evaluation of reasonable potential to
Fact Sheet
NPDES \C0021474
Page I

violate instream action levels for copper and zinc was conducted. No limits were recommended
for these parameters. All other parameters were within permit limits.
Cape Fear Nutrient PermittingStrategy
For the 2006 permit renewal cycle the Division developed a permitting strategy to address
nutrient concerns in the Cape Fear River Basin. The strategy calls for additional nutrient
monitoring and reporting to support the efforts of the Modeling and TMDL Unit in developing
special studies and TMDL projects. Dischargers in the Jordan Lake watershed will monitor Total
Nitrogen and Total Phosphorus 3 times per week, report nitrogen species, and report TN and TP
as both concentration and mass loads. The permits also include a re -opener special condition. In
the event that the Environmental Management Commission adopts a nutrient management
strategy or the EPA approves a TMDL in the coming permit term, the condition allows the
Division to re -open affected permits to set nutrient limits and related conditions accordingly.
SUMMARY OF PROPOSED CHANGES
• Ammonia weekly average limit — A weekly average limit of 6.0 mg/L for the summer and
12 mg/L for the winter season were added to the permit. According to federal rules
permits should include both weekly average and daily maximum limits.
• Total Mercury daily maximum limit - A limit of 0.012 µg/L was added to the permit
based on the results of a reasonable potential analysis.
• Priority Pollutant Analysis — A special condition to analyze for priority pollutants was
added to the permit. This condition is been added to all municipal facilities above 1 MGD
to collect data necessary for permit renewal.
PROPOSED SCHEDULE FOR PERMIT ISSUANCE
Draft Permit to Public Notice: May 24, 2006
Permit Scheduled to Issue: July 17, 2006
NPDES DIVISION CONTACT
If you have questions regarding any of the above information or on the attached permit, please contact
Teresa Rodriguez at (9119) 733-5083 ext. 553.
NAME: '/%//y/y 4� DATE: �a/�Y/O(p
REGIONAL OFFICE COMMENTS
NAME: DA
SUPERVISOR: DATE:
Fact ShceL
NPDES NCO0214 4
Page '_

REASONABLE POTENTIAL ANALYSIS
City of Mebane WWTP
NCO021474
Time Pehorl 01-2004 to 12-2005
Ow(MGD) 2.5
WWTP Class III
7010S (cis) 0
/WC (%) 0 7010S 100
1010W (cts) 0
0 701OW 100
3002 (c/s) 0
® 3002 WA
Avg. Stream Flow, CA Jets) 0.8
® OA 82.888
RecViing Stream Moadama Creek
Stream Class C-NSW
Outfall 001
Ow = 2.5 MGD
STANDARD$ &
PARAMETER
TYPE
CRITERIA (2)
POL
Units
REASONABLE POTENTIAL RESULTS
RECOMMENDED ACTION
DI
WWWI SFAV/
Gxmk Awb
/0.L MURHLIv APowaNp
Mate: WA
Arsenic
NC
50
ugL
0 0
WA
Chnsuc:___
Acute: WA
Oerylllum
C
6.5
ugL
0 0
WA
Acute: 15
NI Samples <2 ugL
Cadmium
NC
2 15
ugL
0 0
WA
._.._
. . 2
C
--"_._._._._._._.___-_._._._ .
Acute: 1,022
NI samples <5 atilt,
Chromium
NC
so 1,022
ugL
0 0
WA
Chronk'. 50
Acute'. 7
Action level
Copper
NC
7 AL 7.3
ugL
23 23
24.6
Chronk:.__'___
Acute: 22
NJ semple,<5uWL
Cyanide
NC
5 N 22
10
ugL
0 0
WA
_
Chronic 5___
Acute: WA
Keep Limit
Fluorlde
NC
1,80a
ugL
105 105
3.114.0
Chronic: 1,800 ----------------------------------
Mute 34
Lead
NC
25 N 33.8
ugL
15 1
17.7
Chronk:__. ZS_
Acute: WA
Land
Mercury
NC
0.012
ng/L
70 51
0M35
_
Chronic: 0.012
Acute: WA
Molybdenum
A
3soo
ugL
15 13
116.8
CM1ronic: eVN.UEi-------------
Acute: 261
At marbles <10 UWL
Nickel
NC
88 261
ugL
0 0
WA
CM1ronlo._ w-----------------------------------
Mute: WA
Phenols
A
1 N
ug'L
0 0
WA
Chronic WAILUEi
--- — — — —
Acute: 56
NJ samples<10 dolt.
Want.
NC
50 56
ug/L
0 0
WA
Chronic:._-5--
Acute: 1
NJ samples <5 ugfL
Silver
NC
006 AL 123
uWL
0 0
WA
_
Chronic: 0
Mute: 67
Action level
Zinc
NC
50 AL 67
jugL[42
42
150.5
-
• Legend •• Freshwater Daanhame
C=Can me enk
NC=Nonce m/nogenl,
A=Aesthete,
RPA 21476 tls, rpa
3'2e12006

Robert L. Wilson
+ ((�{'t� r_
' C'I y Munagcr
YL of
Glendel Stephenson
���y��.Q,[I,Q
Mayor
106 E. Washington Street
C,wnril
Ed Hooks. Moynr Pon Ten,
Mebane, N.C. 27302
Tim Bradley
[phone]
Bob Hupman
Henry Johns
Patty Philipps
June 23, 2006
Teresa Rodriguez
NCDENR, Surface Water Protection
Point Source Branch
1617 Mail Service Center
Raleigh, NC 27699-1617
Dear Ms. Rodriguez:
Elaine 1. Hicks
A., Mgl. Cily CicrWFiennee Off...
Marilyn Caner
Trm C'nlltnr
Gary Bumgamer
CLie/" f Police
Jurany Jobe
Public WorAc Dimcror
Mike Hite
Ware T cuoucut Direcmr
Dean Ray
RecrenOnn & Pcrk, Direcmr
Bob Louis
NM
i
JUN 26 2006
WATER
This letter is in response to draft permit NC0021474, received May 25, 2006. As
requested in your letter of May 24, comments regarding this permit are being
sent to your office.
Weekly average limit for ammonia — For those facilities like ours that discharge to
a stream with a 7Q10 of 0, limits are the minimum since we do not enjoy the
benefits of dilution credits. Our effluent ammonia levels are normally very low.
However during periods of heavy rain, ammonia levels may rise due to
circumstances beyond our control. Rains occurring during a holiday week allow
fewer samples to average to achieve the weekly average limit. There have been
entire weeks of rain in the past. The weekly average limit on the draft permit is
three times the monthly average. This may give ample extra allowance for those
permittees that start with a higher limit, but not for facilities like ours that are
multiplying by the minimum limit. In order to have an adequate cushion for rain
events or unexpected equipment breakdowns, please consider a weekly average
limit that is five times the monthly average.
Total Mercury - Mebane has been doing weekly low level mercury testing since
9/03 with over 140 data points to date. The laboratory reported a value of 37.6
ng/I on 1/9/06. The attached graph shows that all other data was below the 12
ng/I limit. The plant removal rate for mercury derived from the recently approved
headworks is 94.32%. If this effluent value is a real number and not an
aberration, the influent at that time would have been 662 ng/l. A review of the
influent mercury values for the past 10 years showed all values were less than
200 ng/I. (This is the detection level of EPA 245.1) There is almost no chance
that the 37.6 ng/I could be correct and is probably due to contamination. If this
value were removed, the reasonable potential analysis may look different. Also
to be sure that all the data was correctly entered into the DWQ computers, I am
requesting a copy of the data entries for whatever time span the reasonable
potential analysis covers.
Chartered in 1881

City of Mebane Draft Permit Response — page2
The 0.012 ug/I limit that is in the permit is a water quality standard developed not
because that level of mercury is directly toxic to the environment, but because
mercury bio-accumulates in the environment. The water quality limit was
developed by back calculating from fish tissue standards. Bioaccumulation does
not occur immediately but over time. The phosphorus limit is a quarterly average
since it is a nutrient concerned with plant growth. Bioaccumulation involves
growth in ecosystems that takes place overtime and would be more appropriate
as a quarterly average as well. Low level test procedures are not as definitive
particularly near the detection limit of the procedure. The State lab allows +/-
25% of the actual value for standards near detection. Wastewater samples are
complex matrices that could be subject to even greater variations. At very low
levels, contamination either during sample collection or during analysis, no
matter how slight, could result in an undeserved permit violation as has been
discussed above. Extra care is taken during collection, preparation and analysis
but nothing is totally foolproof. By having an average limit rather than a daily
maximum, the environment is protected from bio-accumulation and the regulated
community is protected from variations in the analytical procedure itself and from
any possible contamination issues.
Priority Pollutant Analysis - This requirement was not on the previous permit
received July 26,2002. However three PPA tests were required as part of the
permit renewal process. A letter received August 6, 2004 outlined new
requirements for PPA testing for permit renewal such as additional parameters
and a requirement to test in conjunction with toxicity testing. Will the PPA testing
required under this permit satisfy any PPA requirements for the renewal
process? I would like to feel confident that this expensive testing will satisfy both
requirements.
Cape Fear Nutrient Permitting Strategy — The cover letter states that additional
monitoring is needed "to support the efforts of the modeling and TMDL Unit".
This monitoring requirement is being increased twelve fold with no statement of
how the additional monitoring will be used and what it will achieve. The Modeling
Unit has stated that it has no staff available to enter new data into existing
models or to create any new models. 15A NCAC 0213.0508 (d), B. Piedmont
including Cape Fear, (ii) facilities 1 MGD or greater states that the frequency for
phosphorus and nitrogen monitoring is "monthly". If the monitoring was
increased to twice per month, it would double the amount of data collected and
go beyond the legal requirement.

City of Mebane Draft Permit Response — page 3
Regarding Part II.D.2. Reporting — 15 NCAC 0213.0506 (a)(1)(A) states that
"Monthly reports shall be filed no later that 30 calendar days after the end of the
reporting period for which the report is made". Should the 28 days stated in this
section be 30 days?
I will be happy to meet with you whenever it is convenient if you feel this will be
helpful. Thank you for your consideration in these matters.
Sincerely,
Linda Holt
City of Mebane

O
M t:
4 N
ry Q
1/6n

UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
REGION 4
ATLANTA FEDERAL CENTER
Z�my 102 61 FORSYTH STREET
J,< PROSES ATLANTA, GEORGIA 30303-8960
Aw1San
Ms. Teresa Rodriguez
North Carolina Department of Environment and
Natural Resources
Division of Water Quality
NPDES Unit
1617 Mail Service Center
Raleigh, NC 27699-1617
SUBJ: Draft NPDES Permit
City of Mebane WWTP - NPDES No. NCO021474
Dear Ms. Rodriguez:
In accordance with the EPA/NCDENR MOA, we have completed review of the draft
permit referenced above and have no comments. We request that we be afforded an additional
review opportunity only if significant changes are made to the draft permit prior to issuance, or if
significant comments objecting to the draft permit are received. Otherwise, please send us one
copy of the final permit when issued.
If you have any questions, please call me at [phone].
Sincerely,
$f- - \� -�s-
Marshall Hyatt, Environmental Scientist
Permits, Grants, and Technical Assistance Branch
Water Management Division
[_J!UN 2 1 2006 I D
DENR - WATER QUALITY
POINT SOURCE BRANCH
Internet Address (URL) • http://w .epa.gov
Recycled/Recyclable . Printed with Vegelable Oil Based Inks on Recycled Paper (Minimum 30% Posiconsumer)

AFFIDAVIT OF INSERTION OF ADVERTISMENT
The Times -News Publishing Company
Burlington, NC
Alamance County
I, LINDA GIBSON Legal Advertising Manager of The Times -News Publishing
Do certify that the advertisement of NCDENR/DWQ/NPDES
Entitled:
PUBLIC
NOTICE
State of North Carolina
Environmental Management
Measuring 106 Lines appeared in the Times -News, a newspaper published in
Alamance County, Burlington, NC, in issues of May 26, 2006
Legal Advertising Manager
Sworn to and subscribed before me this ,_day of 2006
bi
Notary Public
I ji 5 2006
WATER
NOTICE
State Of North
Carolina
Environmental
Management
Commission/
NPDES Unit
1617 Mail Service Cantat
Raleigh, NC 27699-1617
Notification 01
Intent To Issue
A NPDES
Wastewater
Permit
On the basis of thoroug
staff review and applicatio
of NC General Statut
143,21, Public law 92-50
and other lawful standard
and regulations, the Non
Carolina Environmenh
Management Commissio
proposes to issue a Natior
al Pollutant Discharg
Elimination Systef
(NPEDES) wastewater di:
charge permit to the pei
son(s) listed below after
five 45 days from the put
lish date of this notice.
Written comments regarc
ing the proposed permit wi
be accepted until 30 day
after the publish date of thi
notice. All comments re
calved prior to that date at
considered in the final de
terminations regarding th
proposed permit. The D
rector of the NC Division c
Water Quality may dead
to hold a public meeting Ic
the proposed permit shout
the Division receive a sir
nificant degree of public it
terest.
Copies of the draft perm
and other supporting infoi
mation on file used to de
termine conditions preset
in the draft permit are avai
able upon request and pat
ment of the costs of reprc
ducbon. Mail comment
and/or requests for infoi
mation to the NC Divisio
of Water Quality at th
above address or call M:
Carolyn Bryar
919-733-5083 extensio
363 or Ms. Frances Cande
laria 919-73W5083 eater
Sion 520 at the Poir
Source Branch. Please it
dude the NPDES perm
number (attached) in an
communication. Interests
persons may also visit th
Division of Water Quality e
512 N. Salisbury Sires
Raleigh, NC 27604-114
between the hours c
8:00am and 5pm to revier
information on file.
(Attached)
City of Mebane, permit Nc
NC0021474, has applie
for renewal of its perm
discharging to Moadam
Creek in the Cape Fez
River Basin.BOD, amnoni
total residual chlorine, fluc
ride and mercury are wets
quality limited parameters
The discharge may affec
future allocations in thi
portion of the receivin,
stream.

NPDES/Non-Discharge Permitting Unit Pretreatment Information Request Form
DES OR NONDISCHAR(
Date of Request 2/9/2006
PERMITTING UNIT COMPLETES THIS PART:
Facill
City of Mebane
Permit#
NCO021474
Region
W S
Requestor
Teresa Rodriguez
Pretreatment A-F Towns- Dana Folley, (ext. 523)
Contact G-M Towns- Jon Risgaard (ext. 560)
N-Z Towns- Deborah Gore (ext. 593)
1`0 PRETREATMENT UNIT:
PRETREATMENT UNIT COMPLETES THIS PART:
Status of Pretreatment Program (circle all that apply)
3) the facility has (or is developing) a Pretreatment Program
3a) is Full Program with LTMP
Flow
Permitted MGD Actual MGD STMP time frame:
Industrial
0.151 0.120 most recent
Domestic
next cycle
Pollutant
Check List
POC due to
(s)
NPDES/Non-
STMP
LTMP
Discharge
Required
Required by
Frequency at
Frequency at
MP
Permit Lima
by EPA'
603 Sludge-
POC due to SIU—
Site specific POC (Provide Explanation)—
effluent
effluent
BOD
X
Q
TSS
X
Q
NH3
X
0
Arsenic
X
Q
Cadmium
X
I
X
0
Chromium
X
Q
Copper
X
Q
Cyanide
X
Q
Lead
X
0
Mercury
X
0
Molybdenum
X
Q
Nickel
X
Q
Silver
I X
Q
Selenium
X
0
Zinc
X
0
Total Phosphorus
X
Q
Fluoride
X
Q
Aluminum
X
0
Chloride
X
Q
Total Nitro en
X - not sure why this is included
Q
'Always in the LTMP
all LTMP/STMP effluent data
-'Only in the LTMP if the POTW land applies sludge
Only in LTMP while the SIU is connected to the POTW
on DMRs?
"- Only in LTMP when the pollutant is a specific concern to the POTW (ex-Chlondes for a POTW who accepts Textile waste)
Yes
Q- Quarterly
M-Monthly
No
d
(attach data)
( )
Comments:
Sampling frequency increases to monthly the year before the HWA
available In spreadsheet?
is due. The next HWA is due 3/1/06, so monthly sampling should
Yes
No
have taken place in 2005. Have requested electronic copy of data.
venlon 1 N0/03
NPOES_Pretreatm ntrequest.fonn.21474.As
Revised: August 4, 2000

November 29, 2005
Mr. Charles H. Weaver, Jr.
NC DENR / DWQ / Point Source Branch
1617 Mail Service Center
Raleigh, NC 27699-1617
Subject: Mebane WWTP Permit Renewal
NC 0021474
Dear Mr. Weaver:
Please find enclosed an NPDES Permit renewal application for the City of Mebane
WWTP and two copies.
If you or your staff have any questions or require addition information, please contact me
at 919-563-6141.
Sincerely,
IlWai M7—
Michael Hite
Wastewater Director

FACILITY NAME AND PERMIT NUMBER: PERMIT ACTION REQUES!TE!J:r(��N
SUPPLEMENTAL APPLICATION INFORMATION
PART FANDUSTRIAL USER DISCHARGES AND RCRAICERCLA WASTES
All treatment works receiving discharges from significant industrial users or which receive RCRA,CERCLA, or oth�remedlaiastes must
complete part F.
GENERAL INFORMATION:
F.I. Pretreatment program. Does the treatment works have, or is subject ot, an approved pretreatment program?
�J Yes ❑ No
F.2. Number of Significant Industrial Users (SIUs) and Categorical Industrial Users (CIUs). Provide the number of each of the following types of
industrial users that discharge to the treatment works.
a. Number of non -categorical SIUs.
b. Number of CIUs. 7
SIGNIFICANT INDUSTRIAL USER INFORMATION:
Supply the following Information folk each SIU. If more than one SIU discharges to the treatment works, copy questions F.3 through F.8 and
provide the information requested for each SIU.
F.3. Significant Industrial User Information. Provide the name and address of each SIU discharging to the treatment works. Submit additional pages
as necessary. (/� �]
Name: f1 K�r (4- 111 `f r C'�
Mailing Address: 3 15 CG -K W 0 Da
FA. Industrial Processes. Describe all the industrial processes that affect or contribute to the SIU's discharge.
eu-ftLL l — ( 'l"1C 1 NYC'/ ilc �l't �eGL� Sc(s �L ry C YJ[t l� LO �d1a F 1 e f�
F.S. Princi I Product(l.�•U �k"r- J .� 1 �� ,.t 'C`tK C' C�>.<; C t�
pa ct(s) and Raw MateJ`t� �
discharge. rial(s). Descrille all of the p ncipal processe and raw materials that affect or c tribute o the SIU's
i
Principal product(s):
Raw material(s): r�i,f lA 01 , A Lk oc
F.S. Flow Rate.
a. Process wastewater flpw rate. Indicate the average daily volume of process wastewater discharge into the collection system in gallons per
day (gpd) and w' ethel' the discharge is continuous or intermittent. j y
���-gPd ( continuous or intermittent) �
v u•n n ✓/�OCG l P�
b. Non -process wastewated flow rate. Indicate the average daily volume of non -process wastewater flow discharged into the collection system
in gallons per day (gpd) and whether the discharge is continuous or intermittent
S'C• `}. glo ( L continuous or interiniftent)
F.7. Pretreatment Standards. Indicate whether the SIU is subject to the following:
a. Local limits eyes ❑ No
b. Categorical pretreatment standards M Yes ❑ No
If subject to categorical pretreatment standards, which category and subcategory?
yo cF4' q33.17
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-e & 7550-22.
Page IS of 22

FACILITY NAME AND PERMIT NUMBER: (� PERMIT ACTION REQUESTED:
cri o 1b11?i t&12 Jlf� �'nrlft/7/ R£t�evfa)
RIVER BASIN:
u�� � rzA2
F.8. Problems at the Treatment Works Attributed to Waste Discharge by the SIU. Has the SIU caused or contributed to any problems (e.g.,
upsets, interference) at the treatment works in the past three years?
fl
❑ Yes No If yes, describe each episode.
RCRA HAZARDOUS WASTE RECEIVED BY TRUCK, RAIL, OR DEDICATED PIPELINE:
F.9. RCRA Waste. Does the treatment works receive or has it in the past three years received RCRA hazardous waste by truck, rail or dedicated pipe?
❑ Yes No (go to F.12)
F.10. Waste transport Method by which RCRA waste is received (check all that apply):
❑ Truck ❑ Rail ❑ Dedicated Pipe
FA i. Waste Description. Give EPA hazardous waste number and amount (volume or mass, specify units).
EPA Hazardous Waste Number Amount Units
r
CERCLA (SUPERFUND) WASTEWATER, RCRA REMEDIATION/CORRECTIVE ACTION
WASTEWATER, AND OTHER REMEDIAL ACTIVITY WASTEWATER:
FA 2. Remediation Waste. Does the treatment works currently (or has it been notified that it will) receive waste from remedial activities?
❑ Yes (complete F.13 through F.15.) 0 No
F.13. Waste Origin. Describe the site and type of facility at which the CERCLA/RCRA/or other remedial waste originates (or is excepted to origniate in
the next five years).
F.14. Pollutants. List the hazardous constituents that are received (or are expected to be received). Include data on volume and concentration, if
known. (Attach additional sheets if necessary.)
F.15. Waste Treatment 1
I
a. Is this waste treated (or will be treated) prior to entering the treatment works?
❑ Yes ❑ No
If yes, describe the treatment (provide information about the removal efficiency):
b. Is the discharge (or will the discharge be) continuous or intermittent?
❑ Continuous ❑ Intermittent If intermittent, describe discharge schedule.
END OF PART F.
REFER TO THE APPLICATION OVERVIEW (PAGE 1) TO DETERMINE WHICH OTHER PARTS
OF FORM 2A YOU MUST COMPLETE
EPA Form 3510-2A (Rev. 1.99). Replaces EPA forms 7550-6 & 7550-22. Page 19 of 22

FACILITY NAME AND PERMIT NUMBER: PERMIT ACTION REQUESTED: RIVER BASIN:
All
C
SUPPLEMENTAL APPLICATION INFORMATION
PART F.INDUSTRIAL USER DISCHARGES AND RCRAICERCLA WASTES
All treatment works receiving discharges from significant industrial users or which receive RCRA,CERCLA, or other remedial wastes must
complete part F.
GENERAL INFORMATION:
F.1. Pretreatment program. Does the treatment works have, or is subject ot, an approved pretreatment program?
M/Yes ❑ No
F.2. Number of Significant Industrial Users (SIUs) and Categorical Industrial Users (CIUs). Provide the number of each of the following types of
industrial users that discharge to the treatment works.
a. Number of non -categorical SIUs.
b. Number of CIUs.
SIGNIFICANT INDUSTRIAL USER INFORMATION:
6-
-5-
Supply the following information fot each SIU. If more than one SIU discharges to the treatment works, copy questions F.3 through F.8 and
provide the information requested for each SIU.
F.3. Significant Industrial User Information. Provide the name and address of each SIU discharging to the treatment works. Submit additional pages
as necessary.
Name: _/77 �q�fi�Z/v /Gt-
Mailing Address: _/ 0 / / ' O-
i2ebe? is e 73c 2-
FA. Industrial Processes. Describe all the industrial processes that affect or contribute to the SIU's discharge.
, . 'I_ _ I . r, ; / n _ / I , .
F.S. Principal Product(s) and Raw Materials} Describe all of the principal processes and raw materials that affect or contribute to the SIU's
discharge.
i
iJ
Principal product(s): e C C to 0 f-d t'LS
Raw material(s): ad (A. M 1 r1 r i vvv 9 f4 P P 1
F.B. Flow Rate.
a. Process wastewater flpw rate. Indicate the average daily volume of process wastewater discharge into the collection system in gallons per
day (gpd) and whelpel' the discharge is continuous or intermittent.
(oi 0 6 — 14 j 0 p gpd ( continuous or intermittent)
b. Non -process wastewater flow rate. Indicate the average daily volume of non -process wastewater flow discharged into the collection system
in gallons per day (gpd) and whether the discharge is continuous or intermittent.
5 7[I & ' I gpd continuous or intermittent)
F.7. Pretreatment Standards. Indicate whether the SIU is subject to the following:
a. Local limits 19/Yes ❑ No
b. Categorical pretreatment standards Wyss ❑ No
If subject to categorical pretreatment standards, which category and subcategory?
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22. Page 18 of 22

FACILITY NAME AND PERMIT NUMBER:
PERMIT ACTION REQUESTED:
R
RIVRBASIN'
BASIN:
/
Y
FAQ
Problems at the Treatment Works Attributed to Waste Discharge by the SIU. Has the SIU caused or
contributed to any problems (e.g.,
upsets, interference) at the treatment works in the past three years?
�No
Gv
❑ Yes If yes, describe each episode. r�-tvw7
L
RA HAZARDOUS WASTE RECEIVED BY TRUCK, RAIL, OR DEDICATED PIPELINE:
F.9, RCRA Waste. Does the treatment works receive or has it in the past three years received RCRA hazardous waste by truck, rail or dedicated pipe?
❑ Yes [2/No (go to F. 12)
F.10. Waste transport Method by which RCRA waste is received (check all that apply):
❑ Truck ❑ Rail ❑ Dedicated Pipe
F.11. Waste Description. Give EPA hazardous waste number and amount (volume or mass, specify units).
EPA Hazardous Waste Number Amount Units
i
. MMr LH J0Urcrtruivu) VVAS I EVIIATER, RCRA REMEDIATION/CORRECTIVE ACTION
WASTEWATER, AND OTHER REMEDIAL ACTIVITY WASTEWATER:
F.12. Remediation Waste. Does the treatment works currently (orhasit been notified that it will) receive waste from remedial activities?
[IYes (complete F.13 through F.15.) [12/No
F.13. Waste Origin. Describe the site and type of facility at which the C E RCLA/RCRA1or other remedial waste originates (or is excepted to crigniate in
the next five years).
F.14. Pollutants. List the hazardous constituents that are received (or are expected to be received). Include data on volume and concentration, if
known. (Attach additional sheets if necessary.)
F.15. Waste Treatment I
a. Is this waste treated (or will be treated) prior to entering the treatment works? '
❑ Yes ❑ No
If yes, describe the treatment (provide information about the removal efficiency):
b. Is the discharge (or will the discharge be) continuous or intermittent?
❑ Continuous ❑ Intermittent If intermittent, describe discharge schedule.
END OF PART F.
REFER TO THE APPLICATION OVERVIEW (PAGE 9) TO DETERMINE WHICH OTHER PARTS
F- OF FORM 2A YOU
MUST
COMPLETE
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22. Page 19 of 22

FACILITY NAME AND PERMIT NUMBER:
�'( y o-f�l&bau, Ne 0021Y 7((
PERMIT ACTION REQUESTED:
RIVER BASIN:
wDNA
C
SUPPLEMENTAL APPLICATION INFORMATION
PART F.INDUSTRIAL USER DISCHARGES AND RCRAICERCLA WASTES
All treatment works receiving discharges from significant industrial users or which receive RCRA,CERCLA, or other remedial wastes must
complete part F.
GENERAL INFORMATION:
FA. Pretreaattmmeent program. Does the treatment works have, or is subject ot, an approved pretreatment program?
ly Yes ❑ No
F.2. Number of Significant Industrial Users (SIUs) and Categorical Industrial Users (CIUs). Provide the number of each of the following types of
Industrial users that discharge to the treatment works.
a. Number of non -categorical SIUs. %
b. Number of CIUs. S
SIGNIFICANT INDUSTRIAL USER INFORMATION;
Supply the following information foF each SIU. If more than one SIU discharges to the treatment workscopy questions F.3 through F.8 and
I
provide the information requested for each SIU.
F.3. Significant Industrial User Information. Provide the name and address of each SIU discharging to the treatment works. Submit additional pages
as necessary.
c
Name: GL-i•1
Mailing Address: (u SCGl -t-L,LA Lks 4-i-t'aJ Dr,V e-
l_C Li ./t P I\,; L 73 �.
FA. Industrial Processes. Describe all the industrial processes that affect or contribute to the SIU's discharge.
bm, t11s bAU<DAA/I P;-� o /
v
F.5. Principal Products) and Raw Materlal(sJ describe all of the principal processes and raw materials that affect or contribute to the SIU's
discharge.
Principal product(s): P.�eci-h( �rt_� �. V�.I f�el-rl�� S SLt' I 1 ��✓'1 e
Rawmaterial(s): feJ 42/re
F.6. Flow Rate.
a. Process wastewater ff w rate. Indicate the average daily volume of process wastewater discharge into the collection system in gallons per
day (gpd) and whetheF the discharge is continuous or intermittent I I
--� 3con
gpd ( continuous or ✓ intermittent)
b. Non -process wastewated flow rate. Indicate the average daily volume of non -process wastewater flow discharged into the collection system
in gallons per day (gpd) and whether the discharge is continuous or intermittent.
r 3 OCR O gpd ( continuous or
F.7. Pretreatment Standards. Indicate whether the SIU is
subject to thefollowing:
a. Local limbs ts,/Yes ❑ No
b. Categorical pretreatment standards E Yes ❑ No
If subject to categorical pretreatment standards, which category and subcategory?
intermittent)
Ale,CF91 q33.IS-
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 8 7550-22. Page 18 of 22

FACILITY NAME AAND� P'E,RMIT NUMBER:: n 1 /( -7 PERMIT ACTION REQUESTED: RIVER BASIN:
J�(�� i.1Q21 / �� �r MoWa A- �Y(° F-ao
F.8. Problems at the Treatment Works Attributed to Waste Discharge by the SIU. Has the SIU caused or contributed to any problems (e.g.,
upsets, interference) apem
t the treatment works in the past three years?
❑ Yes Ly No If yes, describe each episode.-�
RCRA HAZARDOUS WASTE RECEIVED SY TRUCK, RAIL, OR DEDICATED PIPELINE
F.9. RCRA Waste. Does the treatment works receive or has it in the past three years received RCRA hazardous waste by truck, rail or dedicated pipe?
❑ Yes eNo (go to F. 12)
F.10. Waste transport Method by which RCRA waste is received (check all that apply):
❑ Truck ❑ Rail ❑ Dedicated Pipe
F.11. Waste Description, Give EPA hazardous waste number and amount (volume or mass, specify units).
EPA Hazardous Waste Number Amount Units
CERCLA (SUPERFUND) WASTEWATER, RCRA REMEDIATION/CORRECTIVE ACTION
WASTEWATER, AND OTHER REMEDIAL ACTIVITY WASTEWATER:
F.1 Z Remediation Waste. Does the treatment works currently (or has it been notified that it wll) receive waste from remedial activities?
❑ Yes (complete F.13 through F.15.) 9 No
F.13. Waste Origin, Describe the she and type of facility at which the CERCLA/RCRA/or other remedial waste odginates (or is excepted to origniate in
the next five years).
F.14. Pollutants. List the hazardous constituents that are received (or are expected to be received). Include data on volume and concentration, if
known. (Attach additional sheets if necessary.)
F.15. Waste Treatment
a. 'is this waste treated (or will be treated) prior to entering the treatment works?
❑ Yes ❑ No
If yes, describe the treatment (provide information about the removal efficiency):
b. Is the discharge (or will the discharge be) continuous or intermittent?
❑ Continuous ❑ Intermittent If intermittent, describe discharge schedule.
END OF PART F.
REFER TO THE APPLICATION OVERVIEW (PAGE 1) TO DETERMINE WHICH OTHER PARTS
OF FORM 2A YOU MUST COMPLETE
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-5 8 7550-22.
Page 19 of 22

FACILITY NAME AND PERMIT NUMBER: //�� '7 PERMIT ACTION REQUESTED: RIVER
1£ jiSIN:
G'� t�eJa(l�+ meL'()p4 I t( / �� PKo(a-) �Inl Af7i11e / tA�
_ APPLICATION INFORMATION
PART FANDUSTRIAL USER DISCHARGES AND RCRA/CERCLA WASTES
All treatment works receiving discharges from significant industrial users or which receive RCRA,CERCLA, or other remedial wastes must
complete part F.
GENERAL INFORMATION:
F.1. Pretreatment program. Does the treatment works have, or is subject at, an approved pretreatment program?
Ey Yes ❑ No
F.2. Number of Significant Industrial Users (SIUs) and Categorical Industrial Users (CIUs). Provide the number of each of the following types of
industrial users that discharge to the treatment works.
a. Number of non -categorical SIUs.
b. Number of Cl Us.
SIGNIFICANT INDUSTRIAL USER INFORMATION:
W
r
Supply the following information for each SIU. If more than one SIU discharges to the treatment works, copy questions F.3 through F.8 and
provide the information requested for each SIU. i
F.3. Significant Industrial User Information. Provide the name and address of each SIU discharging to the treatment works. Submit additional pages
as necessary.
Name:
l
Mailing Address: Q r—
A/1el un��IUC. a 3, L
F.4. Industrial Processes. Describe all the industrial processes that affect or contribute to the SIU's discharge.
//
�'1'I Vt,� i✓t�f IYIGI�'plt �1�t2 j �� JYIcL n G'-Y-LC�(�2., �OD I S � T-Da� �c+ ���,
F.S. Principal Product(s) and Raw Materialf s). Describe all of the principal processes and raw materials that affect or contribute to the SIU's
discharge.
Principal product(s): "IUD .S `t '7 G !J ` C (� Q.rs
Raw material(s):
F.B. Flow Rate.
a. Process wastewater flow rate. Indicate the average daily volume of process wastewater discharge into the collection system in gallons per
day (gpd) and whether the discharge is continuous or intermittent. I '
1;D0 — 6 OC d ✓
9P ( continuous or intermittent)
b. Non -process wastewated flow rate. Indicate the average daily volume of non -process wastewater flow discharged into the collection system
in gallons per day (gpd) and Whether the discharge is continuous or intermittent.
�•�l U I gpd continuous or intermittent)
F.7. Pretreatment Standards. Indicate whether the SIU is
subject to the following:
a. Local limits Ly res ❑ No -
b. Categorical pretreatment standards E Yes ❑ No
If subject to categorical pretreatment standards, which category and subcategory?
410 C F(`' `4
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 8 7550.22. Page 18 of 22

FACILITY NAME AND PERMIT NUMBER: PERMIT ACTION REQUESTED: RIVER BASIN:
fit` o. �ne �rCa ,��u�'� I VTPA Me�
Epic
F.8. Problems at the Treatment Works Attributed to Waste Discharge by the SIU. Has the SIU caused or contributed to any problems (e.g.,
upsets, interference) at the treatment works in the past three years? 1,
❑ Yes If yes, describe each episode. 156.I.V4 V I (�
RCRA HAZARDOUS WASTE RECEIVED BY TRUCK, RAIL, OR DEDICATED PIPELINE:
[F.1
. RCRA Waste. Does the treatment works receive or has it in the past three years received RCRA hazardous waste by truck, rail or dedicated pipe?
❑ Yes ❑' No (go to F.12)
0. Waste transport Method by which RCRA waste is received (check all that apply):Truck ❑ Rail ❑ Dedicated Pipe
.11. Waste Description, Give EPA hazardous waste number and amount (volume or mass, specify units).
EPA Hazardous Waste Number Amount Units
n
CERCLA (SUPERFUND) WASTEWATER, RCRA REMEDIATION/CORRECTIVE ACTION
WASTEWATER, AND OTHER REMEDIAL ACTIVITY WASTEWATER:
F.12. Remediation Waste. Does the treatment works currently (or has it been notified that it will) receive waste from remedial activities?
❑ Yes (complete F.13 through F.15.) F�No
FA 3. Waste Origin. Describe the site and type of facility at which the CERCLA/RCRA/or other remedial waste odginates (or is excepted to origniate in
the next five years).
i
F.14. Pollutants. List the hazardous constituents that are received (or are expected to be received). Include data on volume and concentration, if
known. (Attach additional sheets if necessary.)
F.15. Waste Treatment
a. Is fhis waste freaked (or will be treated) prior to entering the treatment works?
❑ Yes ❑ No
If yes, describe the treatment (provide infonnation about the removal efficiency):
b. Is the discharge (or will the discharge be) continuous or intemrittent7
❑ Continuous ❑ Intermittent If intermittent, describe discharge schedule.
END OF PART F.
REFER TO THE APPLICATION OVERVIEW (PAGE 1) TO DETERMINE WHICH OTHER PARTS
OF FORM 2A YOU MUST COMPLETE
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-e & 7550-22. Page 19 of 22

FACILITY NAME AND PERMIT NUMBER: PERMIT ACTION REQUESTED: RIVER BASIN:
Cr �j D,.0 �1� jcewe - ' rIJ� c90 21 7 �N�w �� u�Pf �.
SUPPLEMENTAL APPLICATION INFORMATION
PART F.INDUSTRIAL USER DISCHARGES AND RCRA/CERCLA WASTES
All treatment works receiving discharges from significant industrial users or which receive RCRA,CERCLA, or other remedial wastes must
complete part F.
GENERAL INFORMATION:
F.1. Pretreatment program. Does the treatment works have, or is subject ot, an approved pretreatment program?
r�✓Yes ❑ No
F.Z Number of Significant Industrial Users (SIUs) and Categorical Industrial Users (CIUs). Provide the number of each of the following types of
industrial users that discharge to the treatment works.
a. Number of non -categorical SIUs.
b. Number of Cl Us. 5-
SIGNIFICANT INDUSTRIAL USER INFORMATION:
the following information for each SIU. If more than one SIU discharges to the treatment works, copy questions F.3 through F.8 and
the information requested for each SIU.
F.3. Significant Industrial User Information. Provide the name and address of each SIU discharging to the treatment works. Submit additional pages
as necessary.
Name:
5
r�
Mailing Address: �o �fJ, w�OG: ��C.�.
yle.l�c�ne. LIyL�3d L
Fit. Industrial Processes. Describe all the industrial processes that affect or contribute to the SIU's discharge.
!le- hDS
F.5. Principal Product(s) and Raw Material(s). Describe all of the principal processes and raw materials that affect or contribute to the SIU's
discharge. //i L f; 5I / J
Principal product(s): e (e a !1 !i C�.S� l I cal' o` Y1 `r f'LL.�E? 5 / !\ STD t,l Yrt eOLr I. S
Raw material(s):
F.B. Flow Rate.
!il
a. Process wastewater flpw rate. Indicate the average daily volume of process wastewater discharge into the collection system in gallons per
day (gpd) and wh�thel' the discharge is continuous or intermittent.
3e,-Y e 0 e gpd ( continuous ory intermittent)
b. Non -process wastewated flow rate. Indicate the average daily volume of non -process wastewater flow discharged into the collection system
In gallons per day (gpd) and whether the discharge is continuous or intermittent.
v elmU' ' gpd ( `� continuous or intermittent)
F.7. Pretreatment Standards. Indicate whether the SIU is subject to the following:
a. Local limits Iles ❑ No
b. Categorical pretreatment standards ❑ Yes 3-1N0
If subject to categorical pretreatment standards, which category and subcategory?
EPA Form 3510-2A (Rev. 1-99), Replaces EPA forms 7550-8 8 7550-22, Page 18 of 22

FACILITY NAME AND PERMIT NUMBER: PERMIT ACTION REQUESTED: RIVER BASIN:
F.8. Problems at the Treatment Works Attributed to Waste Discharge by the SIU. Has the SIU caused or contributed to any problems (e.g.,
upsets, interference) at the treatment works in the past three years?
❑ Yes ®"No If yes, describe each episode.
RCRA HAZARDOUS WASTE RECEIVED BY TRUCK, RAIL OR DEDICATED PIPELINE
F.S. RCRA Waste. Does the treatment works receive or has it in the past three years received RCRA hazardous waste by truck, rail or dedicated pipe?
❑ Yes 127 No (go to F.12)
FA 0. Waste transport Method by which RCRA waste Is received (check all that apply):
❑ Truck ❑ Rail ❑ Dedicated Pipe
F.11. Waste Description. Give EPA hazardous waste number and amount (volume or mass, specify units).
EPA Hazardous Waste Number Amount Units
CERCLA (SUPERFUND) WASTEWATER, RCRA REMEDIATION/CORRECTIVE ACTION
WASTEWATER, AND OTHER REMEDIAL ACTIVITY WASTEWATER:
F.12. Remediatlon Waste. Does the treatment works currently (or has it been noted that it will) receive waste from remedial activities?
❑ Yes (complete F.13 through F.15.) 940
F.13. Waste Origin. Describe the site and type of facility at which the CERCLA/RCRAIor other remedial waste originates (or is excepted to origniate in
the next five years).
F.14. Pollutants. List the hazardous constituents that are received (or are expected to be received). Include data on volume and concentration, if
known. (Attach additional sheets if necessary.)
FAS. Waste Treatment I
a. Is this waste treated (or will be treated) prior to entering the treatment works?
❑ Yes ❑ No
If yes, describe the treatment (provide information about the removal efficiency):
b. Is the discharge (or will the discharge be) continuous or intermittent?
❑ Continuous ❑ Intermittent If intermittent, describe discharge schedule.
END OF PART F.
REFER TO THE APPLICATION OVERVIEW (PAGE 1) TO DETERMINE WHICH OTHER PARTS
OF FORM 2A YOU MUST COMPLETE
EPA Form 3510-ZA (Rev. 1-99). Replaces EPA forms 7550-8 8 7550-22. Page 19 of 22

FACILITY NAME AND PERMIT NUMBER: PERMIT ACTION REQUESTED: RIVER BASIN:
e �� � � r�q
SUPPLEMENTAL APPLICATION INFORMATION
' PART F.INDUSTRIAL USER DISCHARGES AND RCRAICERCLA WASTES
All treatment works receiving discharges from significant industrial users or which receive RCRA,CERCLA, or other remedial wastes must
complete part F.
GENERAL INFORMATION:
F.I. Pretreatment program. Does the treatment works have, or is subject ot, an approved pretreatment program?
12 Yes ❑ No
F.2. Number of Significant Industrial Users (SIUs) and Categorical Industrial Users (CIUs). Provide the number of each of the following types of
industrial users that discharge to the treatment works.
a. Number of non -categorical SIUs.
b. Number of CIUs.
SIGNIFICANT INDUSTRIAL USER INFORMATION:
Supply the following Information fot each SIU. If more than one SIU discharges to the treatment works, copy questions F.3 through F.8 and
provide the information requestdd for each SIU.
F.3. Significant Industrial User Information. Provide the name and address of each SIU discharging to the treatment works. Submit additional pages
as necessary.
Name: W(Jky kJA
Mailing Address: (3 q 1 fJ 1 1,
5
A Lba i.t e , PJ C. a-73 6 2--
F.4. Industrial Processes. Describe all the industrial processes that affect or contribute to the SIU's discharge.
MQAi1_ Gl ✓t� K('I�(2'rl u.,,Mn ,.. 4 Si'n,>f 1->'.0 /i .:L.._!`;. �i .c
al Product(s) r'
F.S. Princip
al ct(s) and Raw Material(s). Describe all of the principal processes and raw materials that affect or contribute to the SIU's
discharge.
Principal product(s):
K
Raw material(s): " lA M " h.�
F.B. Flow Rate. -
a. Process wastewater 8pw rate. Indicate the average daily volume of process wastewater discharge into the collection system in gallons per
day (gpd) and whetr the discharge is continuous or intermittent. j
ti,?Unc�
gpd ( `� continuous or intermittent)
b. Non -process wastewaterl flow rate. Indicate the average daily volume of non -process wastewater flow discharged into the collection system
in gallons per day (gpd) and whether the discharge is continuous or intermittent
gpd ( continuous or
F.7. Pretreatment Standards. Indicate whether the SIU is subject to the following:
a. Local limits 19'Yes ❑ No
b. Categorical pretreatment standards 2'Yes ❑ No
If subject to categorical pretreatment standards, which category and subcategory?
intermittent)
kf���{33.17
EPA Form 3510-2A (Rev. 1.99). Replaces EPA forms 7550-6 & 7550-22. Page 18 of 22

FACILITY NAME AND PERMIT NUMBER: PERMIT ACTION REQUESTED: l RIVER BASIN:
C 0E Ale ba-i1,�- oVcdo,�i��� I Vcof '
F.8. ' Problems at the Treatment Works Attributed to Waste Discharge by the SIU. Has the SIU caused or contributed to any problems (e.g.,
upsets, interference) at the treatment works in the past three years?
❑ Yes ['No If yes, describe each episode.
RCRA HAZARDOUS WASTE RECEIVED BY TRUCK RAIL OR DEDICATED PIPELINE,•
F.9. RCRA Waste. Does the treatment works receive or has it in the past three years received RCRA hazardous waste by truck, rail or dedicated pipe?
❑ Yes 83 No (go to F. 12)
F.10. Waste transport. Method by which RCRA waste is received (check all that apply):
❑ Truck ❑ Rail ❑ Dedicated Pipe
F.11. Waste Description. Give EPA hazardous waste number and amount (volume or mass, specify units).
EPA Hazardous Waste Number Amount Units
CERCLA (SUPERFUND) WASTEWATER, RCRA REMEDIATION/CORRECTIVE ACTION
WASTEWATER, AND OTHER REMEDIAL ACTIVITY WASTEWATER:
F.12. Remediatlon Waste. Does the treatment works currently (or has it been notfied that it will) receive waste from remedial activities?
❑ Yes (complete F.13 through F.15.) �o
F.13. Waste Origin. Describe the site and type of facility at which the CERCLAIRCRA/or other remedial waste originates (or is excepted to origniate in
the next five years).
F.14. Pollutants. List the hazardous constituents that are received (or are expected to be received). Include data on volume and concentration, if
known. (Attach additional sheets if necessary.)
F.15. Waste Treatment i
a. Is this waste treated (or will be treated) prior to entering the treatment works?
❑ Yes ❑ No
If yes, describe the treatment (provide information about the removal efficiency):
b. Is the discharge (or will the discharge be) continuous or intermittent?
❑ Continuous ❑ Intermittent If intermittent, describe discharge schedule.
END OF PART R
REFER TO THE APPLICATION OVERVIEW (PAGE 1) TO DETERMINE WHICH OTHER PARTS
OF FORM 2A YOU MUST COMPLETE
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 8 7550-22. Page 19 of 22

City of Mebane WWTP
Sludge Management Plan
Equipment
➢ One Parkson Rotary sludge thickener
➢ Two Stranco Polymer feed pumps with separate mixing tanks
➢ Variable frequency control panel to regulate waste flow
➢ Primary aerobic digester — 220,000 gallons
➢ Secondary aerobic digester — 420,000 gallons
Operations
The waste activated sludge is pumped from the return sludge building
to the sludge thickener building. The waste sludge is approximately
0.7 % solids. This sludge is mixed with polymer before entering the
rotary thickener. The sludge proceeds through the thickener allowing
the water to leave and return to the head of the plant. The thicken
sludge of about 5 to 6 % is discharge to the primary digester.
The primary digester is periodic pumped to the secondary digester.
When the secondary is full, it is left to digest until it reaches a Class B
biosolids. If a 38 % reduction cannot achieve, alkaline stabilization is
done.
Synagro will transport the biosolids and perform land application.

April 21,2005
North Carolina Division of Water Quality
Environmental Sciences Branch
Aquatic Toxicology Unit
1621 Mail Service Center
Raleigh, NC 27699-1621
Re: Final Report Toxicity Testing
Dear Mr. Matthews:
The Mebane Wastewater Treatment Plant had three effluent toxicity failures during the
months of April, May, and June 2004.
The April 2Q04 sample was a chronic pass/fail and was set up at 90 percent, our NPDES
standard. Since this does not inform of the failure percentage, May sample was set up at
dilutions of 22.5,45, 75,90, and 100 percent as were all subsequent samples.
The result was a chronic value of 82.2 percent.
Since it could be a lab problem, in June, a second sample was sent to a separate lab. The
same set of dilutions was done in both labs.
Date, sam le 1
Laboratory
Chronic Value, percent
June 7
Meritech
82.2
June 21
1 Pace Analytical
158.1
n
Since failure was on both labs, we could rule�a lab problem.
The effluent started passing in July 2004 at greater than 100 percent.
Month
Chronic Value, percent
Jul 2d04
Greater than 100
August 2004
Greater than 100
gctober 2004
Greater than 100
Greater than 100
_January2005
A ril 2005
Greater than 100
Copper and Zinc study
A Notice of Violation with for failure of whole effluent toxicity testing and a copy of the
copper and zinc action level policy was received on June 30,2004 for the May sample
failure.
3 (' / rs /7raNc� / L%-_2a- o s
U Ca /�-3D An

A search through the plant's database, for ten years, could not see any correlation of
copper and zinc concentrations with toxicity results.
An aliquot of toxicity samples was taken to check this correlation.
Date
Toxicity, P or F
Copper, /I
Zinc, /I
January 6,2004
Pass
5
72
Ma 11, 2004
Fail
2
55
May 14, 2004
Fail
3
99
July 13, 2004
Pass
9
65
July 16, 2004
Pass
8
69
August 10, 2004
Pass
9
58
August 13, 2004
Pass
8
61
October 4, 2004
Pass 113
53
January 5,2005
Pass 13
79
April 4, 2005
'Pass 15
41
As can be seen, there is no correlation.
EPA 624 / 625 Study
On the toxicity sample series on June 7 and 10, 2004, an aliquot of the sample was sent to
the contact lab for an EPA 625 semi volatile organics and EPA 624 volatile organics.
Mostly everything was under detection levels, but a library search did turn up
2-(2-butoxyethoxy)-ethanol in a large concentration.
2- 2-butox etho -ethanol
Estimate concentration, /I
June 6,2004
1392
June 10,2004
1255
After passing the toxicity in July 2004, samples over several months were collected for a
624/625 analysis.) I
Date
2- 2-buto ethox -ethanol estimated concentration /I
July 20,2004
43.4
October 4,2004
10.6
January 5,2005
Non detect
EDTA Chelation Study
See attached. The chelation study would seem to indicate that metals caused toxicity.
However we were later informed by Frank Pasztor of Meritech that EDTA would also
remove polar organics.

Significant Industrial User Study
Each of the cities industrial SIU's was required to perform a 48-hour acute static toxicity
analysis with Ceriodaphnia. The LC50 was to be determined using the dischargers
maximum permitted flow expressed as a percentage of the average WWTP flow for
January though June 2004. No toxicity was found in the industrial effluents but the toxicity
had abated before the samples were taken.
Conclusion
Before a complete TIE could be done, the effluent returned to and has stayed in
compliance. The minimal extent of the failure, 82.2, rather than the required 90 made
determining a cause more difficult. The database search showed no trends regarding the
concentrations of copper and zinc in the effluent over the last several years. The direct
comparisons of copper and zinc concentrations in passing and failing effluents failed to
establish a link between copper and/or zinc concentrations and toxicity failures. The only'
link to copper or zinc was the chelation study that showed improvement after the addition
of EDTA. However EDTA also removes polar organics. The presence of the rather high
concentrations of unusual organics in the failing effluent would create suspicion that
organics may have been the cause of the failures. An internet search of 2(2-
butoxyethoxy) ethanol revealed that it is a polar organic commonly used as a solvent to
bind organics with water and as such would have been removed by the EDTA. An old
PPA from several years earlier did not show it in the effluent. Later 625 scans done on
passing effluents showed much lower or absent amounts of 2(2-butoxyethoxy) ethanol.
An internet search of the compound did not turn up any data regarding its effect on
Ceriodaphnia dubia. With the return of the effluent to compliance no further studies could
be done to confirm the conclusion that organics may have been the cause of the problem.
2(2-butoxyethoxy)ethanol and other similar organic solvents are widely used in a variety of
consumer goods and industrial products and processes. It could have come from just
about anywhere including an illegal dump of some kind.
We cannot definitively identify the cause of the toxicity failures. However the data does
not seem to indicate that copper and/or zinc were responsible.
If you have any questions, please contact me at 919-563-6141.
Sincerer
Michael Hite Gam'
Wastewater Director
Attachments
Cc: Robert Wilson, City of Mebane

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cc: Charles Weaver, NPDES Unit
Central Files
WSRO
SOC PRIORITY PROJECT: Yes No X
If Yes, SOC No.
To: Permits and Engineering Unit
Surface Water Protection Section
Attention: Teresa Rodriguez
Date: November 3, 2005
NPDES STAFF REPORT AND RECOMMENDATION
Alamance County
Zl 4-7y
Permit No. NC0002"
PART I - GENERAL INFORMATION
1. Facility and Address:
City of Mebane WWTP
701 Corrigidor Road
Mebane, NC 27302
2. Date of Investigation: October 25, 2005
3. Report Prepared by: Jenny Freeman
4. Persons Contacted and Telephone Number: Michael Hite, ORC
Phone [phone]
5. Directions to Site: From I-40 East, take NC-119 North. Turn
left onto Holmes Road. Turn left onto Corrigidor Drive.
The plant is at the end of the street.
6. Discharge Point(s), List for all discharge points:
Latitude: 36 05' 15" Longitude:79 17' 15"
U.S.G.S. Quad No. C21SE U.S.G.S. Quad Name Mebane
7. Site size and expansion area consistent with application?
X Yes No If No, explain:
8. Topography (relationship to flood plain included):
Located adjacent to Moadams Creek.

NPDES Permit Staff Report
Other
c. Landfill:
d. Other disposal/utilization scheme:
3. Treatment plant classification (attach completed rating
sheet). Class III
4. SIC Code(s): 4952
Primary: 01 (Domestic) Secondary: 02 (Industry)
Main Treatment Unit Code: 0 2 1 X 3
PART III - OTHER PERTINENT INFORMATION
1. Is this facility being constructed with Construction Grant
Funds or are any public monies involved. (municipals only)?
N/A
2. Special monitoring or limitations (including toxicity)
requests: N/A
3. Important SOC, JOC or Compliance Schedule dates: (Please
indicate) N/A
Date
Submission of Plans and Specifications
Begin Construction
Complete Construction
4. Alternative Analysis Evaluation: Has the facility evaluated
all of the non -discharge options available. Please provide
regional perspective for each option evaluated.
Spray Irrigation: N/A
Connection to Regional Sewer System: N/A
Subsurface: N/A
Other disposal options: N/A
5. Other Special Items:
PART IV - EVALUATION AND RECOMMENDATIONS