NC0021504_NPDES Permit Renewal_20131231

DENR®FRO
ATA JAILos2013
NCDENR DWQ
North CarolinaDepartment of Environment and Natural Resources
Division of Water Resources
Pat McCrory Thomas A. Reeder John E. Skvarla, III
Governor Director Secretary
December 31, 2013
Attn: Jimmy Blake, Mayor
Town of Biscoe
PO Box 1228
Biscoe, NC 27209
Subject: Receipt of permit renewal
Permit NC0021504
Montgomery County
Dear Mr. Blake:
The NPDES Unit received your permit renewal application on December 30, 2013. A member of the
NPDES Unit will review your application. They will contact you if additional information is required to
complete your permit renewal. You should expect to receive a draft permit approximately 30-45 days
before your existing permit expires.
If you have any additional questions concerning renewal of the subject permit, please contact Charles
Weaver [phone].
Sincerely,
e,,o/ng
Wren Thedford
Point Source Branch
cc: Central Files
Eayetteville-Regional-Officej
NPDES Unit
1617 Mail Service Center, Raleigh, North Carolina 27699-1617
Location: 512 N. Salisbury St. Raleigh, North Carolina 27604 ,
Phone: [phone] Fax: [phone]/Customer Service:1-877-623-6748
Internet:: www.ncwater.orq
An Equal OpportunitylAffiirmative Action Employer

FACILITY NAME AND PERMIT NUMBER:
Town of Biscoe WWTP, NPDES NC0021504
PERMIT ACTION REQUESTED:
Renewal
RIVER BASIN:
Yadkin Peedee
FORM
2A
NPDES
Form 2A has been developed in a modular format and consists of a "Basic Application Information" packet
and a "Supplemental Application Information" packet. The Basic Application Information packet is divided
into two parts. All applicants must complete Parts A and C. Applicants with a design flow greater than or
equal to 0.1 mgd must also complete Part B. Some applicants must also complete the Supplemental
Application Information packet. The following items explain which parts of Form 2A you must complete.
BASIC APPLICATION INFORMATION:
A. Basic Application Information for all Applicants. All applicants must complete questions A.1 through A.8. A treatment works
that discharges effluent to surface waters of the United States must also answer questions A.9 through A.12.
B. Additional Application Information for Applicants with a Design Flow >_ 0.1 mgd. All treatment works that have design flows
greater than or equal to 0.1 million gallons per day must complete questions B.1 through B.6.
c. Certification. All applicants must complete Part C (Certification).
SUPPLEMENTAL APPLICATION INFORMATION:
D. Expanded Effluent Testing Data. A treatment works that discharges effluent to surface waters of the United States and meets
one or more of the following criteria must complete Part D (Expanded Effluent Testing Data):
1. Has a design flow rate greater than or equal to 1 mgd,
2. Is required to have a pretreatment program (or has one in place), or
3. Is otherwise required by the permitting authority to provide the information.
E. Toxicity Testing Data. A treatment works that meets one or more of the following criteria must complete Part E (Toxicity Testing
Data):
1. Has a design flow rate greater than or equal to 1 mgd,
2. Is required to have a pretreatment program (or has one in place), or
3. Is otherwise required by the permitting authority to submit results of toxicity testing.
F. Industrial User Discharges and RCRA/CERCLA Wastes. A treatment works that accepts process wastewater from any
significant industrial users (Sills) or receives RCRA or CERCLA wastes must complete Part F (Industrial User Discharges
and RCRA/CERCLA Wastes). SIUs are defined as:
1. All industrial users subject to Categorical Pretreatment Standards under 40 Code of Federal Regulations (CFR) 403.6 and
40 CFR Chapter I, Subchapter N (see instructions); and
2. Any other industrial user that:
a. Discharges anaverage of 25,000 gallons per day or more of process wastewater to the treatment works
(with certain exclusions); or
b. Contributes a process wastestream that makes up 5 percent or more of the average dry weather hydraulic
or organic capacity of the treatment plant; or
Is designated as an SIU by the control authority.
c.
G. Combined Sewer Systems. A treatment works that has a combined sewer system must complete Part G (Combined Sewer
Systems).
LL APPLICANTS MUST COMPLETE PAR (CERTIFICATION)
JAN 0 6 2013
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22.
wg of 21

FACILITY NAME AND PERMIT NUMBER:
Town of Biscoe WWTP, 0021504
PERMIT ACTION REQUESTED:
Renewal
RIVER BASIN:
Yadkin Peedee
BASIC APPLICATION INFORMATION
PART A. BASIC APPLICATION ,INFORMATIQN;;FOR ALL APPLICANTS:
All treatment works must complete questions A.1 through A.8 of this Basic Application Information Packet.
A.1. Facility Information.
Facility Name Town of Biscoe Wastewater Treatment Plant
Mailing Address 110 West Main Street, Post Office Box 26
Biscoe, NC 27209
Contact Person Sam Stewart
Title Director of Public Utilities
Telephone Number [phone]
Facility Address Location west of Biscoe off NC S.R. 1556 Montgomery County
(not P.O. Box) N/A
A.2. Applicant Information. If the applicant is different from the above, provide the following:
Applicant Name
Mailing Address
Contact Person
Title
Telephone Number ( )
Is the applicant the owner or operator (or both) of the treatment works?
to the facility or the applicant.
existing environmental permits that have been issued to the treatment works
PSD
© owner © operator
Indicate whether correspondence regarding this permit should be directed
• facility © applicant
A.3. Existing Environmental Permits. Provide the permit number of any
(include state -issued permits).
NPDES NC 0021504
UIC Other
RCRA Other
A.4. Collection System Information. Provide information on municipalities and areas served by the facility. Provide the name and population of each
entity and, if known, provide information on the type of collection system (combined vs. separate) and its ownership (municipal, private, etc.).
Name Population Served Type of Collection System Ownership
Biscoe 1,695 Separate Municipal
Total population served 1,695
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22.
Page 2 of 21

FACILITY NAME AND PERMIT NUMBER:.
Town of Biscoe WWTP, NC 0021504
PERMIT ACTION REQUESTED:
Renewal
RIVER BASIN:
Yadkin -Pee Dee
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22. Page 3 of 21

A.S. Indian Country.
a. Is the treatment works located in Indian Country?
❑ Yes 0 No
b. Does the treatment works discharge to a receiving water that is either in Indian Country or that is upstream from (and eventually flows
through) Indian Country?
❑ Yes 0 No
A.6. Flow. Indicate the design flow rate of the treatment plant (i.e., the wastewater flow rate that the plant was built to handle). Also provide the
average daily flow rate and maximum daily flow rate for each of the last three years. Each year's data must be based on a 12-month time period
with the 12th month of "this year" occurring no more than three months prior to this application submittal.
a. Design flow rate 0.60 mgd
b. Annual average daily flow rate
c. Maximum daily flow rate
Two Years Ago
0.197
0:560
Last Year This Year
0.204 0.228
0.501 0.705
A.7. Collection System. Indicate the type(s) of collection system(s) used by the treatment plant. Check all that apply. Also estimate the percent
contribution (by miles) of each.
O Separate sanitary sewer 100
❑ Combined storm and sanitary sewer
A.B. Discharges and Other Disposal Methods.
a. Does the treatment works discharge effluent to waters of the U.S.? ❑X Yes ❑ No
If yes, list how many of each of the following types of discharge points the treatment works uses:
i. Discharges of treated effluent
ii. Discharges of untreated or partially treated effluent
iii. Combined sewer overflow points
1
0
0
iv. Constructed emergency overflows (prior to the headworks) 0
v. Other
b. Does the treatment works discharge effluent to basins, ponds, or other surface impoundments
that do not have outlets for discharge to waters of the U.S.? ❑ Yes
If yes, provide the following for each surface impoundment:
Location:
❑X No
Annual average daily volume discharge to surface impoundment(s) mgd
Is discharge ❑ continuous or ❑ intermittent?
c. Does the treatment works land -apply treated wastewater? 0 Yes 0 No
If yes, provide the following for each land application site:
Location:
Number of acres:
Annual average daily volume applied to site: mgd
Is land application ❑ continuous or ❑ intermittent?
d. Does the treatment works discharge or transport treated or untreated wastewater to another
treatment works?
❑ Yes El No
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22.
Page 4of21

FACILITY NAME AND PERMIT NUMBER:
Town of Biscoe VVWTP, NC 0021504,
PERMIT ACTION REQUESTED:
Renewal
RIVER BASIN:
Yadkin -Pee Dee
e.
If yes, describe the mean(s) by which the wastewater from the t eatment works is discharged or transported to the other treatment works
(e.g., tank truck, pipe).
If transport is by a party other than the applicant, provide:
Transporter Name
Mailing Address
Contact Person
Title
Telephone Number ( )
For each treatment works that receives this discharge, provide the
following:
Name
Mailing Address
•
Contact Person
Title
Telephone Number ( )
If known, provide the NPDES permit number of the treatment works
Provide the average daily flow rate from the treatment works into
Does the treatment works discharge or dispose of its wastewater
in A.8. through A.8.d above (e.g., underground percolation, well
If yes, provide the following for each disposal method:
that receives this discharge
the receiving facility. mgd
in a manner not included
injection):
• Yes © No
Description of method (including location and size of site(s) if applicable):
Annual daily volume disposed by this method:
Is disposal through this method ■ continuous or • intermittent?
EPA Fomi 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22.
Page 5 of 21

FACILITY NAME AND PERMIT NUMBER:
Town of Biscoe WWTP, NC 0021504
PERMIT ACTION REQUESTED:
Renewal
RIVER BASIN:
Yadkin -Pee Dee
WASTEWATER DISCHARGES:
If you answered "Yes" to question A.8.a, complete questions A.9 through A.12 once for each outfall (including bypass points) through
which effluent is discharged. Do not include information on combined sewer overflows in this section. If you answered "No" to question
A.8.a, go to Part B. "Additional Application Information for Applicants with a Design Flow Greater than or Equal to 0.1 mgd."
A.9. Description of Outfall.
a. Outfall number 1
b. LocationTown of Biscoe
(City or town, if applicable)
Montgomery
(County)
27209
(Zip Code)
NC
(State)
35° 20' 54" 79° 47' 35"
(Latitude) (Longitude)
c. Distance from shore (if applicable) N/A ft.
d. Depth below surface (if applicable) N/A ft.
e. Average daily flow rate 0.228 (2013) mgd
f. Does this outfall have either an intermittent or a periodic discharge? ❑ Yes ❑X No (go to A.9.g.)
If yes, provide the following information:
Number f times per year discharge occurs:
Average duration of each discharge:
Average flow per discharge: mgd
Months in which discharge occurs:
g. Is outfall equipped with a diffuser? ❑ Yes 111 No
A.10. Description of Receiving Waters.
a. Name of receiving water Hickory Branch — White Oak Creek
b. Name of watershed (if known)
United States Soil Conservation Service 14-digit watershed code (if known):
c. Name of State Management/River Basin (if known): Yadkin -Pee Dee
United States Geological Survey 8-digit hydrologic cataloging unit code (if known):
d. Critical low flow of receiving stream (if applicable)
acute zero
cfs
unknown
unknown
chronic zero cfs
e. Total hardness of receiving stream at critical low flow (if applicable): N/A mg/I of CaCO3
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22.
Page 6 of 21

FACILITY NAME AND PERMIT NUMBER:
Town of Biscoe WVVTP, NC 0021504
PERMIT ACTION REQUESTED:
Renewal
RIVER BASIN:
Yadkin -Pee Dee
A.11. Description
a. What level
of Treatment
of treatment are provided?
© Primary ©
• Advanced
Check
Secondary
all that apply.
• Other. Describe:
b. Indicate the following removal rates (as applicable):
Design BOD5 removal or Design CBOD5 removal 95 %
Design SS removal 90
Design P removal N/A
Design N removal N/A %
Other Ammonia Nitrogen 80
c. What type of disinfection is used for the effluent from this outfall? If disinfection varies by season, please describe:
chlorination (gas)
If disinfection is by chlorination is dechlorination used for this outfall? © Yes
Does the treatment plant have post aeration? © Yes
• No
• No
A.12. Effluent Testing Information. All Applicants that discharge to waters of the US must provide effluent testing data for the following
Provide the indicated effluent testing required by the permitting authority for each outfall through which effluent is
parameters.
discharged. Do not include information on combined sewer overflows in this section. All Information reported must be based on data
collected through analysis conducted using 40 CFR Part 136 methods. In addition, this data must comply with QA/QC requirements of 40
CFR Part 136 and other appropriate QAIQC requirements for standard methods for analytes not addressed by 40 CFR Part 136. At a
minimum, effluent testing data must be based on at least three samples and must be no more than four and one-half years apart.
Outfall number: #1
;
. .: MAXIMUM DAILY VALUE
AVERAGE DAILY VALUE `-
PARAMETER
Value '
••Units . ,
Value
Units
Number of Samples
pH (Minimum)
6.03
s.u.
pH (Maximum)
7.60
s.u.
Flow Rate
0.705
MGD
0.23
MGD
334 (daily x 11 Mo)
Temperature (Winter)
15
° C
11.4
° C
17 (1/week x 4 Mo)
Temperature (Summer)
27
° C
20.1
° C
30 (1/week x 7 Mo)
* For pH please report a minimum and a maximum daily value
MAXIMUM DAILY -
DISCHARGE .,
AVERAGE' DAILY DISCHARGE
ANALYTICAL ..
MUMDL
POLLUTANT
Conc.Samplleses
Units
Conc. -'
, Units `
Numb :
. METHOD
CONVENTIONAL AND NON CONVENTIONAL COMPOUNDS
OXYGEN
BOD5
16.8
Mg/L
4.8
Mg/L
47 (1/wk)
SM5210 B
2.0 Mg/L
BIOCHEMICAL
DEMAND (Report one)
CBOD5
FECAL COLIFORM
2
2600
#/100lm1
4.2
#/100m1
47 (llwk)
SM9222 D
1 #/100 ML
TOTAL SUSPENDED SOLIDS (TSS)
54
Mg/L
19.3
Mg/L
47 (l lwk)
SM2540 D
2.5 Mg/L
TEND OF PART -A
REFER TO THE. APPLICATION OVERVIEW (PAGE TO DETERMINE WHICH OTHER PARTS
OF FORM 2A YOU'MUSTCOMPLETE
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22.
Page 7 of 21

FACILITY NAME AND PERMIT NUMBER:
Town of Biscoe WWTP, NC 0021504,
PERMIT ACTION REQUESTED:
Renewal
RIVER BASIN:
Yadkin -Pee Dee
l`
BASIC APPLICATION INFORMATION
PARTS ADDITIONAL APPLICATION INFORMATION FORAPPLICANTS'WITH A DESIGN FLOW GREATER THAN OR
EQUAL TO-'0 1 MGD (100 000 gallons erda
All applicants with a design flow rate z 0.1 mgd must answer questions B.1 through B.6. All others go to Part C (Certification).
B.1. Inflow and Infiltration. Estimate the average number of gallons per day
27,000 gpd
that flow into the treatment works from inflow and/or infiltration.
and repairs are being planned when funding is available.
Briefly explain any steps underway or planned to minimize inflow and infiltration.
An I&I study was completed in 2013 by the Town of Biscoe
B.2. Topographic Map. Attach to this application a topographic map of the area extending at least one mile beyond
map must show the outline of the facility and the following information. (You may submit more than one map
area.)
a. The area surrounding the treatment plant, including all unit processes. SEE ATTACHED TOPO & WWTP
b. The major pipes or other structures through which wastewater enters the treatment works and the pipes or
treated wastewater is discharged from the treatment plant. Include outfalls from bypass piping, if applicable.
c. Each well where wastewater from the treatment plant is injected underground. NOT APPLICABLE
d. Wells, springs; other surface water bodies, and drinking water wells that are: 1) within % mile of the property
works, and 2) listed in public record or otherwise known to the applicant. NOT APPLICABLE
e. Any areas where the sewage sludge produced by the treatment works is stored, treated, or disposed. SHOWN
f. If the treatment works receives waste that is classified as hazardous under the Resource Conservation and
or special pipe, show on the map where the hazardous waste enters the treatment works and where it is treated,
B.3. Process Flow Diagram or Schematic. Provide a diagram showing the processes of the treatment plant, including
backup power sources or redunancy in the system. Also provide a water balance showing all treatment units,
chlorination and dechiorination). The water balance must show daily average flow rates at influent and discharge
facility property boundaries. This
if one map does not show the entire
SITE MAP.
other structures through which
boundaries of the treatment
ON SITE PLAN
Recovery Act (RCRA) by truck, rail,
stored, and/or disposed.
all bypass piping and all
including disinfection (e.g.,
points and approximate daily flow
DIAGRAM & NARATIVE
rates between treatment units. Include a brief narrative description of the diagram. SEE ATTACHED FLOW
B.4. Operation/Maintenance Performed by Contractor(s).
Are any operational or maintenance aspects (related to wastewater treatment
and effluent quality) of the treatment works the responsibility of a
and describe the contractor's responsibilities (attach additional
contractor? ■ Yes © No
If yes, list the name, address, telephone number, and status of each contractor
pages if necessary).
Name:
Mailing Address:
Telephone Number: ( )
Responsibilities of Contractor:
B.5. Scheduled improvements and Schedules of Implementation. Provide information on any uncompleted implementation schedule or
uncompleted plans for improvements that will affect the wastewater treatment, effluent quality, or design capacity of the treatment works. If the
treatment works has several different implementation schedules or is planning several improvements, submit separate responses to question B.5
for each. (If none, go to question B.6.) SEE ATTACHED PROPOSED PROJECT SCHEDULE FOR PLANT IMPROVEMENTS
a. List the outfall number (assigned in question A.9) for each outfall that is covered by this implementation schedule.
Outfall #1 will be impacted by the improvements but is not subject to an implementation schedule.
b. Indicate whether the planned improvements or implementation
schedule are required by local, State, or Federal agencies.
■ Yes © No
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22.
Page 8 of 21

FACILITY NAME AND PERMIT NUMBER:
Town of Biscoe WWTP, NC 0021504
PERMIT ACTION REQUESTED:
Renewal
RIVER BASIN:
Yadkin -Pee Dee
c. If the answer to B.5.b is "Yes,' briefly describe, including new maximum daily inflow rate (if applicable).
N/A
d. Provide dates imposed by any compliance schedule or any actual dates of completion for the implementation steps listed below, as
applicable. For improvements planned independently of local, State, or Federal agencies, indicate planned or actual completion dates, as
applicable. Indicate dates as accurately as possible.
Schedule (Planned) Actual Completion
Implementation Stage MM/DD/YYYY MM/DD/YYYY
- Begin Construction 06 / 23 / 2014 / /
- End Construction 03/28/2015 / /
- Begin Discharge Ongoing / /
-Attain Operational Level Ongoing / /
e. Have appropriate permits/clearances concerning other Federal/State requirements been obtained? ■ Yes © No
Describe briefly: The project is not under a compliance order or implementation requirement. The Authorization to Construct (ATC)
Application with supporting plans and specifications was submitted to DENR 12/19/13.
B.6. EFFLUENT TESTING DATA (GREATER THAN 0.1 MGD ONLY).
Applicants that discharge to waters of the US must provide effluent testing data for the following parameters. Provide the indicated
effluent testing required by the permitting authority for each outfall through which effluent is discharged. Do not include information
on combine sewer overflows in this section. All information reported must be based on data collected through analysis conducted
using 40 CFR Part 136 methods. In addition, this data must comply with QA/QC requirements of 40 CFR Part 136 and other appropriate
QA/QC requirements for standard methods for analytes not addressed by 40 CFR Part 136. At a minimum effluent testing data must be
based on at least three pollutant scans and must be no more than four and on -half years old.
Outfall Number: 1
=
POLLUTANT'
MAXIMUM DAILY :.
DISCHARGE
AVERAGE1MILY DISCHARGE
ANALYTICAL
METHOD
MUMDL
Conc.
Units ;
Conc.
Units
Number of
Samples
CONVENTIONAL AND NON CONVENTIONAL COMPOUNDS
AMMONIA (as N)
12.3
Mg/L
3.0
Mg/L
47
EPA 350.1
0.1 Mg/L
CHLORINE (TOTAL
RESIDUAL, TRC)
17
Ug/L
10
Ug/L
47
SM 4500-CLG
10 Ug/L
DISSOLVED OXYGEN
9.6
Mg/L
7.4
Mg/L
47
SM 4500-OG
0.5
TOTAL KJELDAHL
NITROGEN (TKN)
14.1
Mg/L
9.4
Mg/L
3
EPA 350.1
0.1
NITRATE PLUS NITRITE
NITROGEN
16.7
Mg/L
11.4
Mg/L
3
EPA 353.2
0.1
OIL and GREASE
PHOSPHORUS (Total)
3.9
Mg/L
2.6
Mg/L
3
EPA 200.7
0.02 Mg/L
TOTAL DISSOLVED SOLIDS
(TDS)
OTHER
END OF PART B
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 9 of 21

FACILITY NAME AND PERMIT NUMBER:
Town of Biscoe WWTP, NC 0021504
PERMIT ACTION REQUESTED:
Renewal
RIVER BASIN:
Yadkin -Pee Dee
BASIC APPLICATION'INFORMATION
PART C , CERTIFICATION :- m ,
All applicants must complete the Certification Section. Refer to instructions to determine who is an officer for the purposes of this
certification. All applicants must complete all applicable sections of Form 2A, as explained in the Application Overview. Indicate below which
parts of Form 2A you have completed and are submitting. By signing this certification statement, applicants confirm that they have reviewed
Form 2A and have completed all sections that apply to the facility for which this application is submitted.
Indicate which parts of Form 2A you have completed and
are submitting:
Application Information packet:
D (Expanded Effluent Testing Data)
E (Toxicity Testing: Biomonitoring Data)
F (Industrial User Discharges and RCRNCERCLA Wastes)
G (Combined Sewer Systems)
© Basic Application Information packet Supplemental
• Part
• Part
• Part
• Part
ALL, APPLICANTS; MUST COMPLETE'THE FOLLOWING CERTIFICATION.
I certify under penalty of law that this document and all attachments were prepared under my direction or supervision in accordance with a system
designed to assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who
manage the system or those persons directly responsible for gathering the information, the information is, to the best of my knowledge and belief, true,
accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment
for knowing violations.
Name and official title Jimmy Blake. Mayor
Signature
Telephone number [phone]
Date signed / �� /�
Upon request of the permitting authority, you must submit a y other information necessary to assure wastewater treatment practices at the treatment
works or identify appropriate permitting requirements.
SEND COMPLETED FORMS TO:
NCDENRI DWQ
Attn: NPDES Unit
1617 Mail Service Center
Raleigh, North Carolina 27699-
1617
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22. Page 10 of 21

FACILITY NAME AND PERMIT NUMBER:
Town of Biscoe WWTP, NC 0021504
PERMIT ACTION REQUESTED:
Renewal
RIVER BASIN:
Yadkin -Pee Dee
SUPPLEMENTAL APPLICATIONINFORMATION
PART D EXPANDED EFFLUENT TESTING DATA NIA
Refer to the directions on the cover page to determine whether this section applies to the treatment works.
Effluent Testing: 1.0 mgd and Pretreatment Works. If the treatment works has a design flow greater than or equal to 1.0 mgd or it has (or is required
to have) a pretreatment program, or is otherwise required by the permitting authority to provide the data, then provide effluent testing data for the following
Provide the indicated effluent testing information and any other information required by the permitting authority for each outfall through which
pollutants.
effluent is discharged. Do not include information on combined sewer overflows in this section. All information reported must be based on data collected
through analyses conducted using 40 CFR Part 136 methods. In addition, these data must comply with QA/QC requirements of 40 CFR Part 136 and
other appropriate QA/QC requirements for standard methods for analytes not addressed by 40 CFR Part 136. Indicate in the blank rows provided below
any data you may have on pollutants not specifically listed in this form. At a minimum, effluent testing data must be based on at least three pollutant
scans and must be no more than four and one-half years old.
Outfall number: (Complete once for each outfall discharging effluent to waters of the United States.)
POLLUTANT '.,
MAXIMUMDAILY DISCHARGE
AVERAGE DAILY DISCHARGE
ANALYTICAL
METHOD 1
MUMDL:
Conc.
Units
Mass `
• Units..
-Conc.'i
Units '
. Mass
Units
Number
^ of
Samples
METALS (TOTAL RECOVERABLE), CYANIDE, PHENOLS, AND HARDNESS.
ANTIMONY
ARSENIC
BERYLLIUM
CADMIUM
CHROMIUM
COPPER
LEAD
MERCURY
NICKEL
SELENIUM
SILVER
THALLIUM
ZINC
CYANIDE
TOTAL PHENOLIC
COMPOUNDS
HARDNESS (as CaCO3)
Use this space (or a separate sheet) to provide information on other metals reques ed by the permit writer
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22.
Page 11 of 21

FACILITY NAME AND PERMIT NUMBER:
Town of Biscoe WWTP, NC 0021504
PERMIT ACTION REQUESTED:
Renewal
RIVER BASIN:
Yadkin -Pee Dee
Outfall number: (Complete once for each outfall discharging effluent to waters of the United States.)
=
,'MAXIMUM DAILY,DISCHARGE '
"AVERAGE'DAILY'DISCHARGE , i
.:
-- POLLUTANT ;
.- ,
Conc. ,
.`'
Units '
Mass
`
,Units
'
Conc
'
Units /,
; `,
. Mass :
Units '
Number . ,
of
S amples
.:ANALYTICAL
METHOD
MUMDL
VOLATILE ORGANIC COMPOUNDS
ACROLEIN
ACRYLONITRILE
BENZENE
BROMOFORM
CARBON
TETRACHLORIDE
CHLOROBENZENE
CHLORODIBROMO-
METHANE
CHLOROETHANE
2-CHLOROETHYLVINYL
ETHER
CHLOROFORM
DICHLOROBROMO-
METHANE
1,1-DICHLOROETHANE
1,2-DICHLOROETHANE
TRANS-1,2-DICHLORO-
ETHYLENE
1,1-DICHLORO-
ETHYLENE
1,2-DICHLOROPROPANE
1,3-DICHLORO-
PROPYLENE
ETHYLBENZENE
METHYL BROMIDE
METHYL CHLORIDE
METHYLENE CHLORIDE
•
1,1,2,2-TETRA-
CHLOROETHANE
TETRACHLORO-
ETHYLENE
TOLUENE
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22.
Page 12 of 21

FACILITY NAME AND PERMIT NUMBER:
Town of Biscoe WWTP, NC 0021504
PERMIT ACTION REQUESTED:
Renewal
RIVER BASIN:
Yadkin -Pee Dee
Outfall number: (Complete once for each outfall discharging effluent to waters of the United States.)
'MAXIMUM DAILY•DISCHARGE
AVERAGEDAILY:'DISCHARGE
ANALYTICAL
METHOD
e
'MLJM• DL°
LLUTAN'
°POT
.
Cond.
Units
;Mass ;
Units',:
"Conc
, Umts ;
Mass ',,
�
Units
Number
,of
Samples 1
1,1,1-
TRICHLOROETHANE
1,1,2-
TRICHLOROETHANE
TRICHLOROETHYLENE
VINYL CHLORIDE
Use this space (or a separate sheet) to provide information on other volatile organic compounds requested by the permit writer
ACID -EXTRACTABLE COMPOUNDS
P-CHLORO-M-CRESOL
2-CHLOROPHENOL
•
2,4-DICHLOROPHENOL
2,4-DIMETHYLPHENOL
4,6-DIN ITRO-O-CRESOL
•
2,4-DINITROPHENOL
2-NITROPHENOL
4-NITROPHENOL
PENTACHLOROPHENOL
PHENOL
.
2,4,6-
TRICHLOROPHENOL
Use this space (or a separate sheet) to provide information on other acid -extractable compounds requested by the permit writer
BASE -NEUTRAL COMPOUNDS
ACENAPHTHENE
ACENAPHTHYLENE
ANTHRACENE
BENZIDINE
BENZO(A)ANTHRACENE
BENZO(A)PYRENE
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22.
Page 13 of 21

FACILITY NAME AND PERMIT NUMBER:
Town of Biscoe WWTP, NC 0021504
PERMIT ACTION REQUESTED:
Renewal
RIVER BASIN:
Yadkin -Pee Dee
Outfall number: (Complete once for each outfall discharging effluent to waters of the United States.)
MAXIMUM DAILYDISCHARGE
AVERAGE DAILY
DISCHARGE
ANALYTICAL'
METHOD
-
MUMDL
'POLLUTANT
. •. ...
Conc ,
Units ,
Mass;
Units
. _ ,_•
Conc '".
• ,
Units ,
i
Mass' ;:'Units
;
Number
- •sof
'Samples
3,4 BENZO-
FLUORANTHENE
BENZO(GHI)PERYLENE
BENZO(K)
FLUORANTHENE
BIS (2-CHLOROETHOXY)
METHANE
BIS (2-CHLOROETHYL)-
ETHER
BIS (2-CHLOROISO-
PROPYL)ETHER
BIS (2-ETHYLHEXYL)
PHTHALATE
4-BROMOPHENYL
PHENYL ETHER
BUTYL BENZYL
PHTHALATE
2-CHLORO-
NAPHTHALENE
4-CHLORPHENYL
PHENYL ETHER
CHRYSENE
DI-N-BUTYL PHTHALATE
DI-N-OCTYL PHTHALATE
DIBENZO(A,H)
ANTHRACENE
1,2-DICHLOROBENZENE
1,3-DICHLOROBENZENE
1,4-DICHLOROBENZENE
3,3-DICHLORO-
BENZIDINE
DIETHYL PHTHALATE
DIMETHYL PHTHALATE
2,4-DINITROTOLUENE
2,6-DINITROTOLUENE
1,2-DIPHENYL-
HYDRAZINE
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22.
Page 14 of 21

FACILITY NAME AND PERMIT NUMBER:
Town of Biscoe VWVTP, NC 0021504,
PERMIT ACTION REQUESTED:
Renewal
RIVER BASIN:
Yadkin -Pee Dee
Outfall number. (Complete once for each outfall discharging effluent to waters of the United States.)
."„
;POLLUTANT
;;
MAXIMUM DAILY DISCHARGE; a
' AV.ERAGE DAILY
DISCHARGE
ANALYTICAL
ETHOD
M
,MUMDL
•Conc,,
Units
�
'"Mass
1
;Units
I
-,Conc
Units •
� .
iMass ';
�
Units
Number
'of i
Samples
FLUORANTHENE
FLUORENE
HEXACHLOROBENZENE
HEXACHLORO-
BUTADIENE
HEXACHLOROCYCLO-
PENTADIENE
HEXACHLOROETHANE
INDENO(1,2,3-CD)
PYRENE
ISOPHORONE
7
NAPHTHALENE
NITROBENZENE
N-NITROSODI-N-
PROPYLAMINE
N-NITROSODI-
METHYLAMINE
N-NITROSODI-
PHENYLAMINE
PHENANTHRENE
PYRENE
1,2,4-
TRICHLOROBENZENE
Use this space (or a separate sheet) to
provide information
on
other base -neutral compounds
requested by the permit
writer
Use this space (or a separate sheet) to provide information on other pollutants (e.g , pesticides) requested by the permit writer
.,END OF RART,-;D
REFER TO THE APPUICATION'OVERVIEW (PAGE:1.) TOIDETERMINE'1WHICH OTHER PARTS
OF?FORM 2A YOU MUST COMPLETE
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22.
Page 15 of 21

FACILITY NAME AND PERMIT NUMBER:
Town of Biscoe WWTP, NC 0021504
PERMIT ACTION REQUESTED:
Renewal
RIVER BASIN:
Yadkin -Pee Dee
SUPPLEMENTAL APPLICATION INFORMATION
PART'E •TOXICITY TESTING DATA NIA
POTWs meeting one or more of the following criteria must provide the results of whole effluent toxicity tests for acute or chronic toxicity for each of the
facility's discharge points: 1) POTWs with a design flow rate greater than or equal to 1.0 mgd; 2) POTWs with a pretreatment program (or those that are
required to have one under 40 CFR Part 403); or 3) POTWs required by the permitting authority to submit data for these parameters.
• At a minimum, these results must include quarterly testing for a 12-month period within the past 1 year using multiple species (minimum of two
species), or the results from four tests performed at least annually in the four and one-half years prior to the application, provided the results
show no appreciable toxicity, and testing for acute and/or chronic toxicity, depending on the range of receiving water dilution. Do not include
information on combined sewer overflows in this section. All information reported must be based on data collected through analysis conducted
using 40 CFR Part 136 methods. In addition, this data must comply with QA/QC requirements of 40 CFR Part 136 and other appropriate QA/QC
requirements for standard methods for analytes not addressed by 40 CFR Part 136.
• In addition, submit the results of any other whole effluent toxicity tests from the past four and one-half years. If a whole effluent toxicity test
conducted during the past four and one-half years revealed toxicity, provide any information on the cause of the toxicity or any results of a
toxicity reduction evaluation, if one was conducted. .
• If you have already submitted any of the information requested in Part E, you need not submit it again. Rather, provide the information
requested in question E.4 for previously submitted information. If EPA methods were not used, report the reasons for using alternate methods.
If test summaries are available that contain all of the information requested below, they may be submitted in place of Part E.
If no biomonitoring data is required, do not complete Part E. Refer to the Application Overview for directions on which other sections of the form to
complete.
E.1. Required Tests.
Indicate the number of whole effluent
toxicity tests conducted in the past four and one-half years.
following chart for each whole effluent toxicity test conducted in the last four and one-half years. Allow one
■ chronic . acute
E.2. Individual Test Data. Complete the
column per test (where each species
constitutes a test). Copy this page
Test number:
if
more than three tests are being reported.
Test number:
Test number:
a. Test information.
Test Species & test method number
Age at initiation of test
Outfall number
Dates sample collected
Date test started
Duration
b. Give toxicity test methods followed.
Manual title
Edition number and year of publication
Page number(s)
c. Give the sample collection method(s) used. For multiple grab samples, indicate the number of grab samples used.
24-Hour composite
Grab
d. Indicate where the sample was taken in relation to disinfection. (Check all that apply for each.
Before disinfection
After disinfection
After dechlorination
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22.
Page 16 of 21

FACILITY NAME AND PERMIT NUMBER:
Town of Biscoe WWTP, NC 0021504
PERMIT ACTION REQUESTED:
Renewal
RIVER BASIN:
Yadkin -Pee Dee
Test number: Test number: Test number:
e. Describe the point in the treatment process at which the sample was collected.
Sample was collected:
f. For each test, include whethe the test was intended to assess chronic toxicity, acute toxicity, or both
Chronic toxicity
Acute toxicity
g. Provide the type of test performed.
Static
Static -renewal
Flow -through
h. Source of dilution water. If laboratory water, specify type; if receiving water, specify source.
Laboratory water
Receiving water
i. Type of dilution water. If salt water, specify "natural" or type of artificial sea salts or brine used.
Fresh water
Salt water
j. Give the percentage effluent used for all concentrations in the test series.
k. Parameters measured during the test. (State whether parameter mee s test method specifications)
pH
Salinity
Temperature
Ammonia
Dissolved oxygen
I. Test Results.
Acute:
Percent survival in 100%
effluent
%
%
%
LCSo
95% C.I.
%
%-
%
Control percent survival
%
%
%
Other (describe)
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22.
Page 17 of 21

FACILITY NAME AND PERMIT NUMBER:
Town of Biscoe WWTP, NC 0021504
PERMIT ACTION REQUESTED:
Renewal
RIVER BASIN:
Yadkin -Pee Dee
Chronic:
NOEC
%
IC25
%
%
%
Control percent survival
%
%
%
Other (describe)
m. Quality Control/Quality Assurance.
Is reference toxicant data available?
Was reference toxicant test within
acceptable bounds?
What date was reference toxicant test
run (MM/DD/YYYY)?
/ /
/ /
/ - /
Other (describe)
E.3. Toxicity Reduction Evaluation.
• Yes • . No
Is the treatment works involved in a Toxicity Reduction Evaluation?
If yes, describe:. `
E.4. Summary of Submitted Biomonitoring Test Information. If you have
cause of toxicity, within the past four and one-half years, provide the dates
of the results.
Date submitted: / / (MM/DD/YYYY)
submitted biomonitoring test information, or information regarding the
the information was submitted to the permitting authority and a summary
Summary of results: (see instructions)
r` END OFPARTE ss
;REFER TO THE APPLICATION OVERVIEW (PAGE 1)'TO DETERMINE WHICH'•OTHE!R PARTS
OF FORM 2A YOU MUST' COMPLETE;
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22. Page 18 of 21

FACILITY NAME AND PERMIT NUMBER:
Town of Biscoe WVVTP, NC 0021504
PERMIT ACTION REQUESTED:
Renewal
RIVER BASIN:
Yadkin -Pee Dee
SIPPLEMENTAL APPLICdTIO,N IFNFO�R, MATION
PART F INDUSTRIAL USERvISCHARGES,AND IRCRA/CERCLA WASTES NIA
All treatment works receiving discharges from significant industrial users
complete part F.
GENERAL INFORMATION:
or which receive RCRA,CERCLA,
ot, an approved pretreatment program?
Users (ClUs). Provide the number
or other remedial wastes must
of each of the following types of
questions F.3 through F.8 and
F.1. Pretreatment program. Does the treatment works have, or is subject
■ Yes ■ No
F.2. Number of Significant Industrial Users (SIUs) and Categorical Industrial
industrial users that discharge to the treatment works.
a. Number of non -categorical SIUs.
b. Number of ClUs.
SIGNIFICANT INDUSTRIAL USER INFORMATION:
to the treatment works, copy
Supply the following information for each SIU. If more than one SIU discharges
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:
Mailing Address:
F.4. Industrial Processes. Describe all the industrial processes that affect or contribute to the SIU's discharge.
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.
Principal product(s):
Raw material(s):
F.6. Flow Rate.
a. Process wastewater flow rate. Indicate the average daily volume of process wastewater discharge into
day (gpd) and whether the discharge is continuous or intermittent.
gpd ( continuous or intermittent)
-
the collection system in gallons per
discharged into the collection system
b. Non -process wastewater flow rate. Indicate the average daily volume of non -process wastewater flow
in gallons per day (gpd) and whether the discharge is continuous or intermittent.
- gpd ( continuous or intermittent)
F.7. Pretreatment Standards. Indicate whether the SIU is subject to the
a. Local limits ❑ Yes •
following:
• No
b. Categorical standards ■ Yes ■ No
pretreatment
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 19 of 21

FACILITY NAME AND PERMIT NUMBER:
Town of Biscoe WWTP, NC 0021504
PERMIT ACTION REQUESTED:
Renewal
RIVER BASIN:
Yadkin -Pee Dee
F.8. Problems at the Treatment Works Attributed to Waste Discharge
upsets, interference) at the treatment works in the past three years?
by the SIU. Has the SIU caused or contributed to any problems (e.g.,
• 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?
that apply):
(volume or mass, specify units).
Units
• Yes • No (go to F.12)
F.10. Waste transport. Method by which RCRA waste is received (check all
• Truck • Rail • Dedicated Pipe
F.11. Waste Description. Give EPA hazardous waste number and amount
EPA Hazardous Waste Number Amount
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?
other remedial waste originates (or is excepted to origniate in
• Yes (complete F.13 through F.15.) • No
F.13. Waste Origin. Describe the site and type of facility at which the CERCLA/RCRA/or
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?
efficiency):
■ Yes • No
If yes, describe the treatment (provide information about the removal
b. Is the discharge (or will the discharge be) continuous or intermittent?
If intermittent, describe discharge schedule.
• Continuous • Intermittent
END OF PART F.
EFER-.TO THE:APP.LICATION OVERVIEW (PAGE 1)TO&DETERMINEWHICH OTHER PATS ; r
OF FORM 2A YOU MAST COMPLETE ,
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22.
Page 20 of 21

FACILITY NAME AND PERMIT NUMBER:
Town of Biscoe WWTP, NC 0021504
PERMIT ACTION REQUESTED:
• Renewal
RIVER BASIN:
Yadkin -Pee Dee
SUPPLEMENTAL APPLICATION INFORMATION
,PARTXG COMBINED SEWER SYSTEMS N/A'
If the treatment works has a combined sewer system, complete Part G.
G.1. System Map. Provide a map indicating the following: (may be included
a. All CSO discharge points.
b. Sensitive use areas potentially affected by CSOs (e.g., beaches,
outstanding natural resource waters).
c. Waters that support threatened and endangered species potentially
G.2. System Diagram. Provide a diagram, either in the map provided in G.1
includes the following information.
a. Location of major sewer trunk lines, both combined and separate
b. Locations of points where separate sanitary sewers feed into the
c. Locations of in -line and off-line storage structures.
d. Locations of flow -regulating devices.
e. Locations of pump stations.
CSO OUTFALLS:
with Basic Application Information)
drinking water supplies, shellfish beds, sensitive aquatic ecosystems, and
affected by CSOs.
or on a separate drawing, of the combined sewer collection system that
sanitary.
combined sewer system.
Complete questions G.3 through G.6 once for each CSO discharge point.
G.3. Description of Outfall.
a. Outfail number
b. Location
(City or town, if applicable) (Zip Code)
(County) (State)
(Latitude) (Longitude)
c. Distance from shore (if applicable) ft.
d. Depth below surface (if applicable) ft.
e. Which of the following were monitored during the last year for this CSO?
• Rainfall • CSO pollutant concentrations • CSO frequency
• CSO flow volume • Receiving water quality
f. How many storm events were monitored during the last year?
G.4. CSO Events.
a. Give the number of CSO events in the last year.
events (❑ actual or • approx.)
b. Give the average duration per CSO event.
hours (El actual or III approx.)
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22.
Page 21 of 21

FACILITY NAME AND PERMIT NUMBER:
Town of Biscoe WWTP, NC 0021504
PERMIT ACTION REQUESTED:
Renewal
RIVER BASIN:
Yadkin -Pee Dee
G.5.
G.6.
c. Give the average volume per CSO event.
million gallons co actual or ■ approx.)-
d. Give the minimum rainfall that caused a CSO event in the last year
Inches of rainfall
Description of Receiving Waters.
a. Name of receiving water:
b. Name of watershed/river/stream system:
United State Soil Conservation Service 14-digit watershed code
c. Name of State Management/River Basin:
(if known):
United States Geological Survey 8-digit hydrologic cataloging unit
CSO Operations.
Describe any known water quality impacts on the receiving water caused
intermittent shell fish bed closings, fish kills, fish advisories, other recreational
code (if known):
by this CSO (e.g., permanent or intermittent beach closings, permanent or
loss, or violation of any applicable State water quality standard).
;END OF PART G.
REFERTO APPLICATION OVERVIEW (PAGE 1) TO DETERMINE WHICH OTHER, PARTS
OF FORM 2-A YOU: MUST COMPLETE.
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22. Page 22 of 21

Additional information, if provided, will appear on the following pages.
1. USGS Map — Town of Biscoe WWTP
2. Biscoe Site Map
3. Town of Biscoe WWTP Flow Schematic
4. WWTP Flow Diagram Narrative Description
5. Proposed Biscoe WWTP Upgrade Schedule
6. Town of Biscoe Sludge Management Plan
NPDES FORM 2A Additional Information

-t? -74q. N.>-`41
r(fJ -.
��) us TOWN OF BISCOE WWTP WITH
r t r t P f\ DISCHARGE TO HICKORY BRANCH
4../Ail
. (_.-1::,/d/ ' ) \ ,I-jr--/.) --le •f-9=. - ci
4.1
TOWN OF BISCOE WWTP - NP[
USGS MAP - BISCOE QUANDR)
7.5 MINUTE SERIES
1 QS24

Legend
Proposed VVVVTP Structures
---- Existing VVVVTP Structures
Future Sewer
Ex. Sewer Lines
Streams
Sludge Digester
Sludge Drying Beds
!AB1
Proposed Splitter Box
Proposed Clarifier
Proposed Bar Screen
Existing VVVVTP
Discharge
COmmuniry •:)!RIFI:UCI.ire <: Of15JI'C (;IS
Biscoe WWTP
Site Map
75 37.5 0
75 Feet
• II

To Landfill
Disposal
Influent
Bar
Screen
r i WAS
Sludge Drying Beds
RAS
Aeration Basin No 1
0 0 .I —I
WAS
RAS
Water
1
Chlorine Gas
Feed System
CL2 Solution
Return Sludge
Pumps
Plant
Influent
Legend:
RAS Return Activated Sludge
WAS Waste Activated Sludge
0
Prepared By: - W.K. Dickson & Co., Inc.
Project No. 20130213.00.CL
fl
Aeratio? asinlI
f+ . 2
A
Sludge
Emergency Clarifier Bypass
Water
l
Sulfur
Dioxide
Gas Feed
System
SO2 Solution
Chlorine
Contact
` Tank
Discharge to Hickory
Branch Creek
Q ave = 0.23 mgd
TOWN OF BISCOE
EXISTING WVVTP FLOW SCHEMATIC
December 20, 2013

WWTP Flow Diagram Narrative Description
Town of Biscoe NPDES Permit NC0021504 Renewal
Existing Wastewater Treatment Plant Narrative:
The Town of Biscoe WWTP is an extended aeration activated sludge process. Flow from the
collection system enters the plant by gravity and flow through the following unit processes:
• Manually cleaned bar screen
• Two (2), 654,000 gallon aeration basins with 2 ea 15 horsepower floating aerators per basin
• One (1), 50' diameter secondary clarifier
• One (1), chlorine contact chamber with provisions for chlorination and dechlorination
Supporting processes include:
• Dual chlorine gas, flow proportional chlorinators with one unit serving as a redundant unit
• Dual sulfur dioxide gas, flow proportional dechlorinators with one unit serving as
redundant unit
• Sludge holding tank
• Sand drying beds
• Return activated sludge pumps, 2 with one unit as a redundant unit
• Laboratory/office building
Proposed WWTP Upgrade:
The Town of Biscoe has recently received a Clean Water Management Trust Fund grant to assist
with a proposed WWTP upgrade. Design and associated permitting for construction are now in
progress with an anticipated construction completion in 2014. The proposed upgrade is not in
response to regulatory actions and no change in the permitted flow is being requested. The
proposed upgrade is to provide the following plant improvements for improved treatment
reliability:
• Installation of a new mechanically cleaned bar screen with by-pass manually cleaned
screen.
• Addition of valves in influent piping to aeration basins to permit flow isolation between
basins.
• Installation of additional floating aerators in Aeration Basin #1 permitting treatment in one
basin with second basin in reserve.
• New clarifier flow splitter structure allowing control of aeration basin effluent flow to
secondary clarifiers.
• New secondary clarifier providing a redundant unit to the existing 40 year old unit.
• New RAS/WAS pump station supporting the new secondary clarifier.

PROJECT:
CLIENT:
PREPARED BY:
DATE:
PROPOSED WWTP UPGRADE SCHEDULE
Town of Biscoe
Bob Froneberger, P.E.
12/20/2013
ITEM
TASK
Month:
Jun-13
Jul-13
Aug-13
Sep-13
Oct-13
Nov-13
Dec-13
Jan-14
Feb-14
Mar-14
Apr-14
May-14
Jun-14
1
Approval to Proceed
X
2
Concept Design / Permitting Coord
3
Design Surveys - Geotech & Site Topo
I._.a.
4
Engineering Design & Permitting
I
i
5
DENR Review & Permit to Construct
6
Advertise, Bid, Award Contract for Const.
Month:
Jun-14
Jul-14
Aug-14
Sep-14
Oct-14
Nov-14
Dec-14
Jan-15
Feb-15
Mar-15
Apr-15
May-15
Jun-15
7
Construction
j
B
Final Approval & Placement into Operation
X
Note: Authorization to Construct (ATC) application was submitted to NCDENR on December 20, 2013 with Plans and Specifications for the proposed upgrade.

Town of Biscoe Sludge Management Plan
Activated sludge from the extended aeration activated sludge process is periodically
wasted to a 55,200 gallon sludge holding tank for storage by diversion of flow from the
plant return activated sludge (RAS) force main utilizing the RAS pumps for wasting. The
waste activated sludge (WAS) is periodically transferred to the sand drying beds (4 each
@ 800 SF / each or 3200 SF total).
When the WAS achieves a sufficient dryness on the drying beds, it is removed by the
Town and disposed of in the Montgomery County Sanitary Landfill approximately 2 or 3
times a year.