NC0063096_Permit Issuance_20020422

NPDES DOCUMENT ! CANNINO COVER SHEET
NPDES Permit:
NC0063096
Holly Springs WWTP
Document Type:
. Permit Issuance j?
Wasteload Allocation
Authorization to Construct (AtC)
Permit Modification
Complete File - Historical
Engineering Alternatives (EAA)
Correspondence
Owner Name Change
Meeting Notes
Instream Assessment (67b)
Speculative Limits
Environmental Assessment (EA)
Document Date:
April 22, 2002
This document is printed on reuse paper - ignore any
content on the resterse side

Mr. Thomas Tillage
Director of Water Quality
Town of Holly Springs
850 West Ballentine St.
Holly Springs, North Carolina 27540
Michael F. Easley, Governor
William G. Ross, Jr., Secretary
North Carolina Department of Environment and Natural Resources
Gregory J. Thorpe Ph.D., Acting Director
Division of Water Quality
April 22, 2002
Subject: NPDES Permit Issuance
Permit No. NC0063096
Utley Creek WWTP
Wake County
Dear Mr. Tillage:
Division staff have reviewed and approved your renewal application for an NPDES discharge
permit. Accordingly, the Division is forwarding the subject NPDES permit. This permit is
issued pursuant to the requirements of North Carolina General Statute 143-215.1 and the
Memorandum of Agreement between North Carolina and the U.S. Environmental Protection
Agency dated May 9, 1994 (or as subsequently amended).
The Division may re -open this permit to require weekly average limits for ammonia. After
calculating allowable concentrations, the Division will perform an analysis of past ammonia
data to determine if there is a reasonable potential for this discharge to exceed these potential
limits. If there is, this permit will be re -opened. If there is not, the permit will not be re-
opened, but will contain weekly average limits for ammonia upon renewal.
If any parts, measurement frequencies, or sampling requirements contained in this permit are
unacceptable to you, you have the right to an adjudicatory hearing upon written request within
thirty (30) days following receipt of this letter. This request must be in the form of a written
petition, conforming to Chapter 150B of the North Carolina General Statutes, and filed with the
office of Administrative Hearings, 6714 Mail Service Center, Raleigh, North Carolina 27699-
6714. Unless such a demand is made, this permit shall be final and binding.
Please take notice that this permit is not transferable except after notice to the Division. Part
II, E.4. addresses the requirements to be followed in case of change in ownership or control of
this discharge. The Division may require modification or revocation and reissuance of the
permit. This permit does not affect the legal requirements to obtain other permits which may
be required by the Division of Water Quality, the Division of Land Resources, the Coastal Area
Management Act, or any other federal or Local governmental permit.
If you have any questions concerning this permit, please contact Teresa Rodriguez at telephone
number [phone], ext. 595.
Sincerely,_
Orrig►nal ;signed By
®avid A. Goodrich
Gregory J. Thorpe
Enclosure: NPDES Permit No. NC0063096
cc: Raleigh Regional Office, Water Quality
EPA Region 4
Technical Assistance and Certification Unit
Wake County
Central Files
NPDES Unit
1617 Mail Service Center, Raleigh, North Carolina 27699-1617 Telephone [phone] FAX [phone]
An Equal Opportunity Affirmative Action Employer Visit us on the INTERNET @ www.enr.state.nc.us

Permit No. NC0063096
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
PERMIT
TO DISCHARGE WASTEWATER UNDER THE
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
In compliance with the provision of North Carolina General Statute 143-215.1, other lawful
standards and regulations promulgated and adopted by the North Carolina Environmental
Management Commission, and the Federal Water Pollution Control Act, as amended,
Town of Holly Springs
is hereby authorized to discharge wastewater from a facility located at
Utley Creek WWTP
850 Ballentine St.
Holly Springs
Wake County
to receiving waters designated as Utley Creek in the Cape Fear River Basin in accordance with
effluent limitations, monitoring requirements, and other conditions set forth in Parts I, II, III,
and IV hereof.
The permit shall become effective June 1, 2002.
This permit and the authorization to discharge shall expire at midnight on July 31, 2006.
Signed this day April 22, 2002.
Original Signed By
David A. Goodrich
Gregory J. Thorpe, Acting Director
Division of Water Quality
By Authority of the Environmental Management Commission

Permit No. NC0063096
SUPPLEMENT TO PERMIT COVER SHEET
Utley Creek
Wastewater Treatment Plant
is hereby authorized to:
1. Continue to operate an existing 1.5 MGD wastewater treatment facility located at 850
Ballentine St., Holly Springs, Wake County, discharging through outfall 001 and
consisting of the following wastewater treatment components:
• mechanical bar screen
• grit chamber
• anaerobic phosphorus removal basin
• pump station
• anoxic tank
• aeration tank
• package plant with two aeration tanks, two clarifiers and two sludge stabilization
tanks
• final clarifier
• tertiary filter
• sludge stabilization/storage
• two banks UV disinfection system
• cascade aerator
2. Discharge from said treatment works into Utley Creek, a Class C water in the Cape Fear
River Basin, at the location specified on the attached map.

,t AtottLA
'Dr ifri"PlaIr
ista
..ice`. rkarAIK I
F. %mire/
Ankts Ati
gw,r
.0% talfrril
uLL;(v-ii
1(
Town of Holly Springs - Utley CreekWWTP
State Grid/Quad: Apex
E 23 NE
Receiving Stream: Utley Creek
Stream Class: C
Latitude: 35° 38' 41" N
Longitude: 78° 51' 04" W
Drainage Basin: Cape Fear
Sub -Basin: 03-06-07
North
Facility Location
not to scale
NPDES Permit No. NC0063096
Wake County

Permit No. NC0063096
SECTION A(1). EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
Beginning on the effective date of this permit and lasting until expiration, the Permittee is authorized to discharge
treated wastewater from Outfall 001. Such discharges shall be limited and monitored by the Permittee as
specified below:
EFFLUENT
LIMITS
MONITORING REQUIREMENTS
Monthly
Average
Weekly
Average
Daily
Maximum
Measurement
Frequency
Sample
Type
Sample_
Locations
CHARACTERISTICS.
Flow
1.5 MGD
Continuous
Recording
I or E
BOD, 5 day, 20°C (April 1 -
October 31)2
5.0 mg/L
7.5 mg/L
Daily
Composite
E, I
BOD, 5 day, 20°C
(November 1 - March 31)2
10.0 mg/L
15.0 mg/L
Daily
Composite
E, I
Total Suspended Residue2
30.0 mg/L
45.0 mg/L
Daily
Composite
E, I
NH3 as N (April 1• -
October 31) 3
2.0 mg/L
Daily
Composite
E
NH3 as N (November 1-
March 31) 3
4.0 mg/L
Daily
Composite
E
Dissolved Oxygen4
Daily
Grab
E
pH5
Daily
Grab
E
Fecal Coliform (geometric
mean)
200/100 ml
400/100 ml
Daily
Grab
E
Temperature aC
Daily
Grab
E
Total Residual Chlorines
19 µg/L
Daily
Grab
E
Conductivity
Daily
Grab
E
Total Nitrogen (NO2+ NO3 +
'rims
Weekly
Composite
Total Phosphorus?
Weekly
Composite
E
Chronic Toxicity$
Quarterly
Composite
E
Notes:
1. Sample locations: E - Effluent, I - Influent.
2. The monthly average effluent BOD5 and Total Suspended Residue concentrations shall not exceed 15% of the
respective influent value (85% removal).
3. The Division may re -open this permit to require weekly average limits.for ammonia. After calculating allowable
concentrations, the Division will perform an analysis of past ammonia data to determine if there is a reasonable
potential for this discharge to exceed these potential limits. If there is, this permit will be re -opened. If there is
not, the permit will not be re -opened, but will contain weekly average limits for ammonia upon renewal.
4. The daily average dissolved oxygen effluent concentrations shall not be less than 6.0 mg/1.
5. The pH shall not be less than 6.0 standard units nor greater than 9.0 standard units.
6. Total Residual Chlorine shall be monitored only if chlorine is added to the effluent.
7. Total Nitrogen and Total Phosphorus shall be monitored weeklyduring the months of June through September
and monthly during the remaining months of the year. Effluent and instream monitoring shall be conducted
on the same day. •
8. Chronic Toxicity (Ceriodaphnia) P/F at 90%; February, May, August, and November; See Section A(3).
There shall be no discharge of floating solids or visible foam in other than trace amounts.

Permit No. NC0063096
SECTION A(2). INSTREAM MONITORING REQUIREMENTS
Effluent
Measurement
Frequency
Sample
Type
Sample
Locationl
. Characteristics
Dissolved Oxygen
June -Sept
3/week
Grab
U, D
October -May
1/week
Temperature 0C
June -Sept
3/week
Grab
U, D
October -May
1/week
Fecal Coliform (geometric
mean)
June -Sept
3/week
Grab
U, D
October -May
1/week
Total Phosphorus2
June -Sept
1/week
Grab
U, D
October -May
Monthly
Total Nitrogen (NO2+ NO3 +
T2
June -Sept
1/week
Grab
U, D
October -May
Monthly
Chlorophyll -a
June -Sept
1/week 3
Grab
D
Notes:
1. Sample locations: U - Upstream in the pool formed immediately upstream of the instream flow weir, D -
Downstream on the existing dam structure in a location so as to avoid contact between the ground and the
sample bottle.
2. Effluent and instream monitoring shall be conducted on the same day.
3. Chlorophyl -a monitoring is not required during the months of October through May.
As a participant in the Cape Fear River Basin Association, the instream monitoring requirements as stated above
are waived. Should your membership in the agreement be terminated, you shall notify the Division immediately
and the instream monitoring requirements specified in your permit shall be reinstated.

Permit No. NC0063096
A(3). CHRONIC TOXICITY PERMIT LIMIT (QRTRLY)
The effluent discharge shall at no time exhibit observable inhibition of reproduction or significant .
mortality to Ceriodaphnia dubia at an effluent concentration of 90 %.
The permit holder shall perform at a minimum, auarteriq monitoring using test procedures outlined in
the "North Carolina Ceriodaphnia Chronic Effluent Bioassay Procedure," Revised February 1998, or
subsequent versions or "North Carolina Phase II Chronic Whole Effluent Toxicity Test Procedure"
(Revised -February 1998) or subsequent versions. The tests will be performed during the months of
February, May, August, and November. Effluent sampling for this testing shall be performed at the
NPDES permitted final effluent discharge below all treatment processes.
If the test procedure performed as the first test of any single quarter results in a failure or ChV below
the permit limit, then multiple -concentration testing shall be performed at a minimum, in each of the
two following months as described in "North Carolina Phase II Chronic Whole Effluent Toxicity Test
Procedure" (Revised -February 1998) or subsequent versions.
The chronic value for multiple concentration tests will be determined using the geometric mean of the
highest concentration having no detectable impairment of reproduction or survival and the lowest
concentration that does have a detectable impairment of reproduction or survival. The defuution of
"detectable impairment," collection methods, exposure regimes, and further statistical methods are
specified in the "North Carolina Phase II Chronic Whole Effluent Toxicity Test Procedure" (Revised -
February 1998) or subsequent versions.
All toxicity testing results required as part of this permit condition will be entered on the Effluent
Discharge Monitoring Form (MR-1) for the months in which tests were performed, using the parameter
code TGP3B for the pass/fail results and THP3B for the Chronic Value. Additionally, DWQ Form AT-3
(original) is to be sent to the following address:
Attention: North Carolina Division of Water Quality
Environmental Sciences Branch
1621 Mail Service Center
Raleigh, North Carolina 27699-1621
Completed Aquatic Toxicity Test Forms shall be filed with the Environmental Sciences Branch no later
than 30 days after the end of the reporting period for which the report is made.
Test data shall be complete, accurate, include all supporting chemical/physical measurements and all
concentration/response data, and be certified by laboratory supervisor and ORC or approved designate
signature. Total residual chlorine of the effluent toxicity sample must be measured and reported if
chlorine is employed for disinfection of the waste stream.
Should there be no discharge of flow from the facility during a month in which toxicity monitoring is
required, the permittee will complete the information located at the top of the aquatic toxicity (AT) test
form indicating the facility name, permit number, pipe number, county, and the month/year of the
report with the notation of "No Flow" in the comment area of the form. The report shall be submitted to
the Environmental Sciences Branch at the address cited above.
Should the permittee fail to monitor during a month in which toxicity monitoring is required, monitoring
will be required during the following month.
Should any test data from this monitoring requirement or tests performed by the North Carolina
Division of Water Quality indicate potential impacts to the receiving stream, this permit may be re-
opened and modified to include alternate monitoring requirements or limits.
NOTE: Failure to achieve test conditions as specified in the cited document, such as minimum control
organism survival, minimum control organism reproduction, and appropriate environmental controls,
shall constitute an invalid test and will require immediate follow-up testing to be completed no later
than the last day of the month following the month of the initial monitoring.

12/19/2001 10:00 9195772280 WATER QUALITY PAGE 02
NCDENR-DWQ Fax Dec 17 '01 11:02 P.02/02
AMENDMENT TO NPDES PERMIT APPLICATION
Bqnd
In mid-2001 the U.S. Environmental Protection Agency, which overse fords Caiolin 's
NPDES wit program, deb: mined that theatat 's application form for major municipal
&chargers is inadequate. The EPA indicated that the form dots not requite a susgttriaty attic
applicant's wastewater c has isctezezisties, as EPA's standard form doss, and does not
provide the necessaty public record for permit issuance. Since July 2001. EPA has objected to
the issuance of approximately forty permit renewals until the permits provide complete
applications_
In recent discussions with the Division of Wetat Quality, the EPA recently agreed tbat the
DiTidon
may
es provthe monitoring information on each peas iuc 's behalf rather than
re
quire the faclaims to eotnpletc acw $pythons, The permittees have already automatedrn
discharge monitoring repchts (Mks) wide; tbte terms of their NPDES permits, and the
Division
can easy produce summaries for each facilty. However, the DitriSiOn does not have the legal
authority to amend a facility' application; each permittee i mst give its consent in oar for the
Divitton to submit this information on its behalf North Carolina will provide a summary of
discharge monitoring reports as additional documentation to ensure the record is complete.
The statement below is dealgo.ea to eye the Division the authority to submit this data on behalf
of the permittee fcs; this one instance. Other than signing time statement below, no further
action will be requited on the part of the permit holder. Furthetmote, this wolf npt
change the substance ofthe draft permit already issued by the Division.
PLEASE SIGN AND RETURN THE FOLLOWING STAT AS SOON AS
POSSIBLE. 'I'miS STATEMENT WILL CONSTITUTE AN OFFICIAL PERMIT
AMENDMENT. In order to expedite the renewal of your permit, please fax the signed
fotm in (9I9) .733-071+I and send the original to:
NCDENR/DWQ/NPDES UNIT
• 1617 Mail Service Center
Raleigh, NC 27699-1617
rx.dificaticsisfPertnitApplicatiortliramitnerit
"1 certify that this information, to the best of ray knowledge and bclirf, is true, complete,
accntate. This infonnatien, including any data provided, amends the cuttent application for
reissuancs of NPDES permit number NC0063096 submitted to the North Cazolina
Department of Environment and Natural gourcea, Division of Water Quality, on January .30,
2001."
g tatute cif Permit i4o1der Date

Effluent Monitoring Data*
MONTH
NPDES # NAME PARAMETER NAME UNITS CODE Item
NC0063096 Total
NC0063096 HOLLY SPRINGS WWTP
FLOW MGD 50050 Avg.
Max.
Min.
BOO, 5-DAY (20C) MG/L 00310 Avg.
Max.
Min.
TOTAL SUSPENDED SOLIDS MG/L 00530 Avg.
Max.
Min.
AMMONIA (AS N) MG/L 00610 Avg.
Max.
Min.
FECAL COUFORM #l100ML 31616 Avg.
Max.
Min.
TOTAL RESIDUAL CHLORINE UG/L 50060 Avg.
Max.
Min.
TOTAL NITROGEN (AS N) MG/L 00600 Avg.
Max.
Min.
TOTAL PHOSPHORUS (AS P) MG/L 00665 Avg.
Max.
Min.
TEMPERATURE (C) DEG.0 00010 Avg.
Max.
Min.
SPECIFIC CONDUCTANCE uMHOS/CM 00095 Avg.
Max.
Min.
DISSOLVED OXYGEN (DO) MG/L 00300 Avg.
Max.
Min.
Oct 1999 Nov 1999 Dec 1999 Jan 2000 Feb 2000 Mar 2000 Apr 2000 May 2000 Jun 2000 Jul 2000 Aug 2000 Sep 2000 12-Month
Summary
0.6126 0.5095 0.576 0.6931 0.7674 0.6322 0.632 0.6233 0.6611 0.6537 0.7372 0.7383 0.653
0.972 0.8 0.726 1.195 1.035 0.756 0.754 0.735 0.868 0.767 0.926 1.175 1.195
0.402 0.344 0.472 0.521 0.594 0.541 0.531 0.533 0.582 0.569 0.588 0.574 0.344
4.61 4.73 1.67 2.72 2.46 3.55 4.83 4.78 125 0.65 2.13 2.44 2.985
11.6 9.8 5.1 4.6 4.4 8.1 12.1 19.1 3.5 2.8 8.3 5.7 19.1
22 2 0 0 0 2 2.5 0 0 0 0 0 0
3 3.1 2.2 0.5 0.4 0.8 1.6 3.8 2.1 1.3 1.4 22 1.867
6 ' 10 10 2 3 3 4 16 4 4 4 9 16
1 0 0 0 0 0 0 0 0 0 0 0 0
6.05 1.67 1.07 0.4 0.43 22 3.92 2.83 0.01 0.07 0.02 0.1 1.564
15.4 7.9 4.9 1.6 3.7 72 11.4 13.6 02 02 02 1.9 15.4
0.1 0 0 0 0 0 0.1 0 0 0 0 0 0
49.3 39.8 14.4 2.3 4.5 3.9 4.3 14.7 14.9 14.5 20.9 260.2 14.476
2200 1000 660 35 92 6800 16000 7200 970 84 52 5600 16000
2 8 0 0 0 0 0 0 2 2 4 9 0
#DIV/01
0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 -0 0 0
16.75 15.3 18.6 6.05 2.92 4.733 6.516 14.333 10.985 10.362 7233 14.366 10.679
18.5 15.3 18.6 7.9 4.4 13.4 13.9 38.6 15.3 17.8 11.5 20.9 38.6
15 15.3 18.6 4.2 1.6 1.8 2.5 5.8 6.3 5 1.7 5.4 1.6
2.85 4 1.9 0.3 0.08 0.1122 0.07 0.6722 1.1714 1.6375 2.1333 2.1888 1.426
3.5 4 1.9 0.6 0.4 0.3 0.1 1.3 2.1 2.1 2.6 3.1 4
2.2 4 1.9 0 0 0 0 0.3 0.7 0.8 1.7 1.3 0
20.58 17.53 14.58 12.64 11.89 14.8 17 20.41 2323 24.06 24.09 22.8 18.634
23 21 18 17 16 16 19 23 25 25 26 25 26
14 15 12 8 5 13 15 17 21 23 22 20 5
667.6 709 558.8 413.5 480 532.8 586.3 621.1 636 576.2 558 576.300
746 792 0 680 468 539 642 673 691 703 683 682 792
459 652 0 480 358 433 475 523 562 551 521 441 0
821 8.96 10.04 9.77 10.74 9.62 8.64 8.8 8.37 8.01 8.21 8.27 8.970
9.2 11.3 10.7 11.9 12.9 11.6 9.9 9.8 9.3 8.8 8.9 9.6 12.9
7.6 7.8 9.4 8.7 9 8 6.8 8.1 6.8 5.7 6.6 6.6 5.7
' See separate sheets for pH and toxicity data.
eifiuentdatal.xls,DataSumm
12/19/2001

Effluent Monitoring Data*
MONTH
NPDES # NAME PARAMETER NAME UNITS CODE Item
12-
Oct 2000 Nov 2000 Dec 2000 Jan 2001 Feb 2001 Mar 2001 Apr 2001 May 2001 Jun 2001 Jul 2001 Aug 2001 Sep 2001 a
Suummmmaryry
NC0063096 Total
NC0063096 HOLLY SPRINGS WWTP
FLOW MGD 50050 Avg.
Max.
Min.
BOO, 5-DAY (20C) MGA. 00310 Avg.
Max.
Min.
TOTAL SUSPENDED SOUDS MG/L 00530 Avg.
Max.
Min.
AMMONIA (AS N) MG/L 00610 Avg.
Max.
Min.
FECAL COLIFORM #/100ML 31616 Avg.
Max.
Min.
TOTAL RESIDUAL CHLORINE UG/L 50060 Avg.
Max.
Min.
TOTAL NITROGEN (AS N) MG/L 00600 Avg.
Max.
Min.
TOTAL PHOSPHORUS (AS P) MG/L 00665 Avg.
Max.
Min.
TEMPERATURE (C) DEG.0 00010 Avg.
Max.
Min.
SPECIFIC CONDUCTANCE uMHOS/CM 00095 Avg.
Max.
Min.
DISSOLVED OXYGEN (DO) MG/L 00300 Avg.
Max.
Min.
0.709
0.6684 0.6537 0.6466 0.6581 0.7084 0.7573 0.7436 0.6623 0.7509 0.7831 0.8258 0.6544 0.709
0.78 0.812 0.978 0.795 1.23 1.39 1.25 0.848 1.44 1.74 1.86 0.844 1.86
0.578 0.546 0.493 0.557 0.556 0.547 0.568 0.56 0.625 0.595 0.628 0.547 0.493
0.78 027 0.52 1.37 1.88 0.34 0.3 0.37 1.35 1.24 2.08 0.73 0.936
6.2 2.9 3 5.5 4.9 4 3.3 3.2 5.4 17 8 10 17
0 0 0 0 0 0 0 0 0 0 0 0 0
2.1 0.7 0.1 0.4 1.7 1.3 0.9 1.9 1.8 3 3 1.6 1.542
10 2 1 2 11 4 5 7 5 29 32 7 32
0 0 0 0 0 0 0 0 1 1 0 1 0
0 0.03 0.02 0.08 0.29 0.08 0.12 0.7 0 0.05 1.32 0.01 0.225
0 0.2 02 1.3 2.3 0.8 0.8 72 0.1 0.3 7.3 0.3 7.3
0 0 0 0 0 0 0 0 0 0 0 0 0
5.8 12 0 2.3 1.2 2.1 6.6 9.5 12.8 12.8 8.4 2.3 #NUMI
340 3 0 55 4 74 1350 2130 435 2800 210 290 2800
0 0 0 0 0 0 0 0 0 0 0 0 0
#DIV/0!
0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0
12.162 10.487 11.111 11.35 12 7.1 7.8 6.8 6.525 13.1 4.78 15.925 9.928
14.5 162 14.1 12.1 12 7.1 7.8 6.8 9.5 19.6 7.6 19.9 19.9
6.3 4.8 6.6 10.6 12 7.1 7.8 6.8 4.2 8.1 2.9 10.1 2.9
1.725 1.9225 0.0777 0.15 0.1 0.4 0.8 0.9 1.725 2.125 1.04 2.475 1.120
2.2 2.9 0.7 0.2 0.1 0.4 0.8 0.9 2.5 3.5 1.7 3.2 3.5
0.6 0.5 0 0.1 0.1 0.4 0.8 0.9 0.7 1.4 02 2.1 0
1925 16 11.59 10.03 12.57 12.67 15.56 18.9 22.46 23.61 24.41 22.83 17.490
22 20 15 14 16 16 19 22 25 24 26 27 27
17 12 8 6 9 8 11 16 17 21 23 20 6
554.6 558.9 547 534.8 540.8 518 457.7 489.4 476.4 534.4 511.2 634.8 529.633
596 633 578 556 564 933 649 554 527 611 552 670 933
527 505 503 497 522 397 395 439 425 362 371 588 362
9.41 10.02 10.96 11.31 10.3 9.89 1028 8.53 7.33 7.7 8.25 8.42 9.367
10.7 10.8 12.6 12.9 11.2 11.8 11.9 9.4 7.8 8.7 8.7 8.8 12.9
8.1 8.1 7.9 10.2 9.1 8.8 9.3 7.7 6.9 6.8 7.8 8 6.8
See separate sheets for pH and toxicity data.
effluentdatal .xls,DataSumm
12/19/2001

Effluent Monitoring Data - Toxicity
NPDES # FACILITY NAME
NC0063096 HOLLY SPRINGS, TOWN / WWTP
NC0063096 HOLLY SPRINGS, TOWN / WWTP
NC0063096 HOLLY SPRINGS, TOWN / WWTP
NC0063096 HOLLY SPRINGS, TOWN / WWTP
NC0063096 HOLLY SPRINGS, TOWN / WWTP
NC0063096 HOLLY SPRINGS, TOWN / WWTP
NC0063096 HOLLY SPRINGS, TOWN / WWTP
NC0063096 HOLLY SPRINGS, TOWN / WWTP
NC0063096 HOLLY SPRINGS, TOWN / WWTP
NC0063096 HOLLY SPRINGS, TOWN / WWTP
NC0063096 HOLLY SPRINGS, TOWN / WWTP
NC0063096 HOLLY SPRINGS, TOWN / WWTP
NC0063096 HOLLY SPRINGS, TOWN / WWTP
NC0063096 HOLLY SPRINGS, TOWN / WWTP
NC0063096 HOLLY SPRINGS, TOWN / WWTP
NC0063096 HOLLY SPRINGS, TOWN / WWTP
NC0063096 HOLLY SPRINGS, TOWN / WWTP
NC0063096 HOLLY SPRINGS, TOWN / WWTP
NC0063096 HOLLY SPRINGS, TOWN / WWTP
NC0063096 HOLLY SPRINGS, TOWN / WWTP
NC0063096 HOLLY SPRINGS, TOWN / WWTP
NC0063096 HOLLY SPRINGS, TOWN / WWTP
NC0063096 HOLLY SPRINGS, TOWN / WWTP
NC0063096 HOLLY SPRINGS, TOWN / WWTP
NC0063096 Total
PARAMETER NAME
CHRONIC TOX,
CHRONIC TOX,
CHRONIC TOX,
CHRONIC TOX,
CHRONIC TOX,
CHRONIC TOX,
CHRONIC TOX,
CHRONIC TOX,
CHRONIC TOX,
CHRONIC TOX,
CHRONIC TOX,
CHRONIC TOX,
CHRONIC TOX,
CHRONIC TOX,
CHRONIC TOX,
CHRONIC TOX,
CHRONIC TOX,
CHRONIC TOX,
CHRONIC TOX,
CHRONIC TOX,
CHRONIC TOX,
CHRONIC TOX,
CHRONIC TOX,
CHRONIC TOX,
P/F 7DAY CERIODAPHNIA
P/F 7DAY CERIODAPHNIA
P/F 7DAY CERIODAPHNIA
P/F 7DAY CERIODAPHNIA
P/F 7DAY CERIODAPHNIA
P/F 7DAY CERIODAPHNIA
P/F 7DAY CERIODAPHNIA
P/F 7DAY CERIODAPHNIA
P/F 7DAY CERIODAPHNIA
P/F 7DAY CERIODAPHNIA
P/F 7DAY CERIODAPHNIA
P/F 7DAY CERIODAPHNIA
P/F 7DAY CERIODAPHNIA
P/F 7DAY CERIODAPHNIA
P/F 7DAY CERIODAPHNIA
P/F 7DAY CERIODAPHNIA
P/F 7DAY CERIODAPHNIA
P/F 7DAY CERIODAPHNIA
P/F 7DAY CERIODAPHNIA
P/F 7DAY CERIODAPHNIA
P/F 7DAY CERIODAPHNIA
P/F 7DAY CERIODAPHNIA
P/F 7DAY CERIODAPHNIA
P/F 7DAY CERIODAPHNIA
CODE UNITS MONTH RESULT
TGP3B PASS/FAIL 199910 NO DATA
TGP3B PASS/FAIL 199911 PASS
TGP3B PASS/FAIL 199912 NO DATA
TGP3B PASS/FAIL 200001 NO DATA
TGP3B PASS/FAIL 200002 PASS
TGP3B PASS/FAIL 200003 NO DATA
TGP3B PASS/FAIL 200004 NO DATA
TGP3B PASS/FAIL 200005 FAIL
TGP3B PASS/FAIL 200006 FAIL
TGP3B PASS/FAIL 200007 PASS
TGP3B PASS/FAIL 200008 PASS
TGP3B PASS/FAIL 200009 NO DATA
TGP3B PASS/FAIL 200010 NO DATA
TGP3B PASS/FAIL 200011 PASS
TGP3B PASS/FAIL 200012 NO DATA
TGP3B PASS/FAIL 200101 NO DATA
TGP3B PASS/FAIL 200102 PASS
TGP3B PASS/FAIL 200103 NO DATA
TGP3B PASS/FAIL 200104 NO DATA
TGP3B PASS/FAIL 200105 PASS
TGP3B PASS/FAIL 200106 NO DATA
TGP3B PASS/PAIL 200107 NO DATA
TGP3B PASS/FAIL 200108 PASS
TGP3B PASS/FAIL 200109 NO DATA
effluentdatal .xls,Toxicity
12/19/2001

Effluent Monitoring Data - pH
NC0063096 HOLLY SPRINGS, TOWN / WWTP pH 00400 SU 199910 7.7 7
NC0063096 HOLLY SPRINGS, TOWN / WWTP pH 00400 SU 199911 7.6 7.1
NC0063096 HOLLY SPRINGS, TOWN / WWTP pH 00400 SU 199912 7.6 7
NC0063096 HOLLY SPRINGS, TOWN / WWTP pH 00400 SU 200001 8.3 7
NC0063096 HOLLY SPRINGS, TOWN / WWTP pH 00400 SU 200002 7.4 6.5
NC0063096 HOLLY SPRINGS, TOWN / WWTP pH 00400 SU 200003 7.7 6.8
NC0063096 HOLLY SPRINGS, TOWN / WWTP pH 00400 SU 200004 8.4 6.9
NC0063096 HOLLY SPRINGS, TOWN / WWTP pH 00400 SU 200005 7.8 7.1
NC0063096 HOLLY SPRINGS, TOWN / WWTP pH 00400 SU 200006 8 5.5
NC0063096 HOLLY SPRINGS, TOWN / WWTP pH 00400 SU 200007 8 6.1
NC0063096 HOLLY SPRINGS, TOWN / WWTP pH 00400 SU 200008 7.9 7.2
NC0063096 HOLLY SPRINGS, TOWN / WWTP pH 00400 SU 200009 7.8 7.1
NC0063096 HOLLY SPRINGS, TOWN / WWTP pH 00400 SU 200010 7.9 7.6
NC0063096 HOLLY SPRINGS, TOWN / WWTP pH 00400 SU 200011 7.8 7.4
NC0063096 HOLLY SPRINGS, TOWN / WWTP pH 00400 SU 200012 7.9 7.4
NC0063096 HOLLY SPRINGS, TOWN / WWTP pH 00400 SU 200101 7.9 7.5
NC0063096 HOLLY SPRINGS, TOWN / WWTP pH 00400 SU 200102 7.7 7.5
NC0063096 HOLLY SPRINGS, TOWN / WWTP pH 00400 SU 200103 7.6 7.4
NC0063096 HOLLY SPRINGS, TOWN / WWTP pH 00400 SU 200104 7.5 7.2
NC0063096 HOLLY SPRINGS, TOWN / WWTP pH 00400 SU 200105 7.5 7.2
NC0063096 HOLLY SPRINGS, TOWN / WWTP pH 00400 SU 200106 7.4 7.1
NC0063096 HOLLY SPRINGS, TOWN / WWTP pH 00400 SU 200107 7.6 7.1
NC0063096 HOLLY SPRINGS, TOWN / WWTP pH 00400 SU 200108 7.7 7.4
NC0063096 HOLLY SPRINGS, TOWN / WWTP pH 00400 SU 200109 7.6 7.3
NC0063096 Count 24
effluentdatal .xls,pH
12/19/2001

Re: comments on NC63096 - Holly Springs WWTP
Subject: Re: comments on NC63096 - Holly Springs WWTP
Date: Mon, 11 Feb 2002 12:24:29 -0500
From: Teresa Rodriguez <[e-mail]>
Organization: NC DENR DWQ
To: [e-mail]
CC: [e-mail], [e-mail],
[e-mail]
The following answers your comments regarding the Holly Springs permit:
1. The toxicity failures occured on May and June 2000. They passed July
2000 and quarterly thereafter up to date. The Action Level Policy was
approved in October 1999 and NC began implementation on January 2001.
Therefore, they have been in compliance since the policy went into effect.
2. Our TRC policy implements an upper limit of 28 ug/1 and a minimum limit
of 17 ug/1. Limits can fall in between these two numbers because it is
calculated with the dilution.
If you have any questions, please let me know,
Teresa Rodriguez
[e-mail] wrote:
> 1. The fact sheet indicates that there are some WET failures and the Cu
> action level is being exceeded. Has NC sent an NOV to this facility and
> is the permittee on the road to having limits or choosing one of the
> four options in lieu of limits?
> 2. why is the daily TRC max 19 ug/1? Shouldn't it be 17 ug/1?
> 3. The permit does not contain weekly average limits for total
> ammonia, as required by 40 CFR 122.45(d)(2). I know this is a global
> issue for many NC municipal permits and we are in discussions with Dave
> to resolve this.
1 of 1 2/13/02 11:22 AM

AFFIDAVIT OF PUBLICATION
NORTH CAROLINA.
Wake County. ) Ss.
PUBLIC NOTICE
STATE OF NORTH CAROLINA
ENVIRONMENTAL
MANAGEMENT
COMMISSION/ NPDES UNIT
1617 MAIL SERVICE CENTER
RALEIGH, NC 27699-1617
NOTIFICATION OF INTENT
TO ISSUE A NPDES
WASTEWATER PERMIT
On the basis of thorough staff
review and application of NC
General Statute 143.21. Public
law 92.500 and other lawful stan-
dards and regulations, the North
Carolina Environmental Man-
agement Commission proposes
to issue a National Pollutant D1s-
(NPDES)Ewastewaterdischarge
permit tot he person(s) listed
below effective 45 cloys from the
Public date of this notice.
Written comments regarding the
proposed permit will be accept-
ed until 30 days after the public
date of this notice. All comments
received prior to that date are
considered in the final determi-
nations regarding the proposed
permit. The Director of the NC
Division of Water Quality may
decide to hold a public meeting
for the proposed permit should
the Division receive a significant
degree of public interest.
Copies of the draft permit and
other supporting information on
file used to determine conditions
present in the draft permit are
available upon request and Mo-
ment of the costs of reproduc-
tion. Moil documents and/or
requests for information to the
NC Division of Water Quality at —
Christiee Jacksonoratal(919)
733-5083, extension 538. Please
include the NPDES permit num-
ber (attached) in any communi-
cation. Interested persons may
also visit the Division of Water
Quality at 512 N. Salisbury
604-1148
Street,
nRthe hours of NC 8 00 a.m.
and 5:00 p.m. to review Informa-
tion on file.
NPDES Permit Number
NC0039586. CP&L Shearon Har-
ris Hill, NCI27562 has appox lied'
The abON for a facility located in Wake
no discharging wastewater
Into Reservoir In the
Cape Fear River Basin. Current-
ly no parameters are water qual-
`,�) itv limited. This discharge may
\\\`\ O� pofrtion of thearleceiving allocats
ions
NPDES Permit Number
• N00063096. Holly Springs, Town
of - WWTP, 850 West Ballentine
• • t` St., Holly Springs, NC 27540 has
applied for a facility located in
Wake County discharging waste-
_ water intley Crk in the
Cape FearR ver Basinn.. Current-
.- ly BOD5, NH3N and DO are wa•
%, ter quality limited. This
discharge mayaffect future allo-
••cations in this portion of the
4 receiving stream.
N&O: June 10, 2001
//1/1
Before the undersigned, a Notary Public of Johnston
County North Carolina, duly commissioned and authorized to
administer oaths, affirmations, etc., personally appeared
Barbara Brown, who, being duly sworn or affirmed, according
to law, doth depose and say that she is Billing Manager -Legal
Advertising of THE NEWS AND OBSERVER PUBLISHING
COMPANY a corporation organized and doing business
under the Laws of the State of North Carolina, and publishing
a newspaper known as THE NEWS AND OBSERVER, in the
City of Raleigh, County and State aforesaid, the said
newspaper in which such notice, paper, document, or legal
advertisement was published was, at the time of each and
every such publication, a newspaper meeting all of the
requirements and qualifications of Section 1-597 of the
General Statutes of North Carolina and was a qualified
newspaper within the meaning of Section 1-597 of the
General Statutes of North Carolina, and that as such she
makes this affidavit; that she is familiar with the books, files
and business of said corporation and by reference to the files
of said publication the attached advertisement for DEHNR
was inserted in the aforesaid newspaper on dates as follows:
06/10/01 ,
Account Number: 73350832
m the books and files of the aforesaid Corporation and publication.
Billing Manager -Legal Advertising
Sworn or affirmed to, and subscribed before me, this
11 day of JUNE , 2001 AD
In Testimony Whereof, I have hereunto set my hand
and affixed my official seal, the day and year aforesaid.
Notary Public
My commission expires 2nd day of July 2005.
14k
0\

•
DENR / DWQ / NPDES Unit
FACT SHEET FOR NPDES PERMIT DEVELOPMENT
NPDES Permit No. NC0063096
Facility Information
Applicant/Facility Name
Town of Holly Springs / Utley Creek WWTP
Applicant Address
850 West Ballentine St.
Facility Address
850 West Ballentine St.
Permitted Flow (MGD)
1.5 MGD
Type of Waste
Domestic
Facility Class
IV
County
Wake
Facility Status
Renewal
Regional Office
Raleigh
Stream Characteristics
Receiving Stream
Utley Creek
Stream Classification
C
Drainage Area (sq. mi.)
0.73
Drainage basin
Cape Fear
Summer 7Q10 (cfs)
0.11
Subbasin
03-06-07
Winter 7Q10 (cfs)
0.25
Use Support
Not rated
30Q2. (cfs)
0.32
303(d) Listed
NA
Average Flow (cfs)
0.82
State Grid
Apex
IWC (%)
95
USGS Topo Quad
E 23 NE
Summary
• The Town of Holly Springs completed the expansion to 1.5 MGD in January 2000.
• They have submitted an Environmental Assessment for a second expansion to bring the plant to
2.4 MGD. The expansion represents the wastewater treatment needs in the next 5 to 10 years.
The discharge to Utley Creek and the proposed expansion is not a long term solution for the
wastewater treatment needs of the town. The Board of Commissioners has adopted a resolution
stating the commitment of Holly Springs to work on a regional solution for wastewater disposal
and that the continued discharge to Utley Creek is not a viable solution to their wastewater
treatment needs.
Facility Description The wastewater treatment facility consists of: mechanical bar screen, grit
chamber, anaerobic phosphorus removal basin, pump station, anoxic tank, aeration tank, package
plant with two aeration tanks, two clarifiers and two sludge stabilization tanks, final clarifier, tertiary
filter, UV disinfection system and cascade aerator.
Waste Load Allocation (WLA) The Division prepared the last WLA in January 1996 and developed
effluent limits for the expansion to 1.5 MGD. BOD5, NH3N, DO and residual chlorine are water
quality limited.
Basinwide Plan Utley Creek flows to Harris Lake. The recommendation in the 2000 plan is for
Holly Springs to consider other means of disposal including connections to existing facilities in the
area due to high nutrients in the stream. Land use planning for the Harris Lake area is also
recommended in the basin plan.
Fact Situ'
Renewal -- NPDES Permit \( UU6 3U96
Page I

COMPLIANCE REVIEW
Notices of Violation (NOVs) Notices of violation and civil penalties were assessed for the following
violations: BOD5 and TSS on February 1999, Ammonia and Fecal Coliform on October 1999,
Ammonia on April and May 2000, BOD5 on May 2000, Chronic toxicity on May and June 2000 and
Fecal Coliform on September 2000.
Whole Effluent Toxicity (WET) Test Toxicity test failures were reported on August 1998 and May
and June 2000.
DMR Data Review DMRs were reviewed for 1999, 2000 and January -April 2001. The average flow
after the expansion to 1.5 MGD (Jan 2000) was 0.708 MGD. Prior to expansion the average flow was
0.516 MGD. Exceedances were previously listed in the NOV section of this fact sheet.
Instream Data The facility is a member of the Cape Fear Monitoring Coalition. There are no
sampling stations upstream or downstream from the creek where they discharge. They monitored
instream parameters until August 1998. At this time no assessment can be made of the upstream and
downstream conditions of the stream. Instream monitoring for Fecal Coliform should remain in the
permit until data is available to evaluate the impact on the stream.
Data collected by DWQ from 1994 to 1997 showed that calculated Dissolved Oxygen saturation
values exceeded state standards 42% of the time. In 1997 the Division documented an algal bloom in
a pond downstream from the discharge from Holly Springs.
CORRESPONDENCE
Staff Report The Raleigh Regional Office recommends the renewal of the permit in the staff report
prepared in April 2000.
PROPOSED MODIFICATIONS
Update the description of the treatment system and eliminate the effluent limitations and monitoring
requirements for the 0.5 MGD flow.
PROPOSED SCHEDULE OF ISSUANCE
Draft Permit to Public Notice: June 13, 2001
Permit Scheduled to Issue: August 6, 2001
Fact Sheet
Renewal -- NPI)ES NC70063096
Page 2

v
d °7-6,r6ck. d
Qt,,,./,./7
GLGZ.
NPDES UNIT CONTACT
If you have questions regarding any of the above information or on the attached permit, please
contact Teresa Rodriguez at [phone] ext. 595.
NAME: i(ti /677--Th DATE:
Regional Office Comments
QrAf a earf
P�
NAME:
NPDES SUPERVISOR:
DATE:
DATE:
A/630.?.
/44 Zei/ WW
?r-12,1,/f-/
Fat! Sl,cci
Renewal -- \P!)LS \(' )(3O96
P;.i•ce

SOC PRIORITY PROJECT: Yes: No: X
If Yes, SOC No.:
STAFF REPORT AND RECOMMENDATIONS
FOR THE TOWN OF HOLLY SPRINGS WWTP NPDES NC0063096
PERMIT RENEWAL
Date: 4/6/01
To: Permits and Engineering Unit
Water Quality Section
Attention: CHARLES WEAVER
County: WAKE
Permit No.: NC0063096
PART I - GENERAL INFORMATION
1. Facility and Address: TOWN OF HOLLY SPRINGS
P.O BOX 8
128 SOUTH MAIN STREET
HOLLY SPRINGS, NC 27540
RECEIVED
WATFP ►AIITY SFCT►ON
APR 2 4 2031
Non•Oischerge Permitting
2. Date of Site Visit: 12/4/00
3. Report Prepared by: KIRK STAFFORD
4. Persons Contacted and Telephone Number: THOMAS TILLAGE 919-577-1090
5. Directions to Site: US 1 SOUTH FROM RALEIGH, EXIT AT HWY 55,
LEFT ON HWY 55 TOWARD HOLLY SPRINGS, RIGHT ON HOLLY
SPRINGS NEW HILL RD, GO ABOUT 1 MILE THEN LEFT ON ERWIN
PKWY(UNDER CONSTRUCTION), LEFT ON BALENTINE ST, RIGHT
ON WWTP RD
6. Discharge Point(s), List for all discharge points:
Latitude: 35 ° 38' 41" Longitude: 78 ° 51' 03"
Attach a USGS map extract and indicate treatment facility site and discharge point
on map.
Discharge Staff Report
Page 1

U.S.G.S. Quad No.: E23NE U.S.G.S. Quad Name: APEX
7. Site size and expansion area consistent with application? Yes:
No: If No, explain:
8. Topography (relationship to flood plain included): FACILITY IS LOCATED
ON GENTLY SLOPING GROUND AND NOT IN A FLOOD PLAIN. THE
PROPERTY ADJACENT TO THE FACILITY IS HILLY. THE PLANT IS
ABOVE THE FLOOD PLAIN.
9. Location of nearest dwelling: > 300 FEET.
10. Receiving stream or affected surface waters: UTLEY CREEK
a. Classification: C
b. River Basin and Subbasin No.: 03-06-07
c. Describe receiving stream features and pertinent
downstream uses: STREAM IS APPROXIMATELY 10 FEET
WIDE AND ONE TO TWO FEET DEEP. WWTP EFFLUENT
MAKES UP THE MAJORITY OF THE FLOW.
PART II - DESCRIPTION OF DISCHARGE AND TREATMENT WORKS
1. a. Volume of Wastewater to be permitted: 1.5 MGD
b. What is the current permitted capacity of the Waste Water Treatment facility?
1.5 MGD
c. Actual treatment capacity of the current facility (current design capacity)?
1.5 MGD
d. Date(s) and construction activities allowed by previous Authorization to
Construct issued in the previous two years: THE FACILITY HAS
COMPLETED AN UPGRADE THAT WAS BROUGHT ON-LINE
1/18/00 AND CONSISTED OF A NEW INFLUENT STRUCTURE,
PUMP CONTROLS, OXIDATION DITCH WITH NUTRIENT
REMOVAL, CIRCULAR CLARIFIER, UV DISINFECTION, NEW
TERTIARY FILTRATION, AND CASCADE AERATION.
e. Please provide a description of existing or substantially constructed
wastewater treatment facilities: IN ADDITION, TO ITEM "d" ABOVE,
THE FACILITY IS UTILIZING THE OLD WWTP FOR FLOW
EQUALIZATION, PHOSPHORUS REMOVAL, AND SLUDGE
STORAGE.
f. Provide a description of proposed wastewater treatment facilities: THE
TOWN PROPOSES TO BUILD A 4.88 MGD WWTP TO MEET
Discharge Staff Report
Page 2

g•
FUTURE NEEDS. COMPONENTS INCLUDE ADDITIONAL
SCREENING AND GRIT REMOVAL UNITS, ANAEROBIC
REACTORS, 2 SETS OF ANOXIC AND AEROBIC REACTORS,
ALUM FEED SYSTEM, NEW DEEP BED TERTIARY FILTERS,
ADDITIONAL BANKS OF UV, AND A SECOND CASCADE
AERATOR.
Possible toxic impacts to surface waters: AMMONIA, BOD, TSS.
h. Pretreatment Program (POTWs only):
in development: approved: X
should be required: not needed:
2. Residuals handling and utilization/disposal scheme:
a. If residuals are being land applied, please specify DEM permit no.:
Residual Contractor: EAST COAST RESOURCES
Telephone No.: 919-387-1906
b. Residuals stabilization: PSRP: AEROBIC DIGESTION AND LIME
STABLIZATION.
PFRP: Other:
c. Landfill:
d. Other disposal/utilization scheme (Specify): DIGESTED AND OR LIME
STABILIZED SLUDGE IS LAND APPLIED. "
3. Treatment plant classification (attach completed rating sheet): IV
4. SIC Code(s): 4952
Wastewater Code(s) of actual wastewater, not particular facilities i.e.., non -contact
cooling water discharge from a metal plating company would be 14, not 56.
Primary: 01
Main Treatment Unit Code: 107-3
PART III - OTHER PERTINENT INFORMATION
1. Is this facility being constructed with Construction Grant
Funds or are any public monies involved. (municipals
only)? UNKNOWN
Discharge Staff Report
Page 3

2. Special monitoring or limitations (including toxicity) requests: NONE
3. Important SOC, JOC or Compliance Schedule dates: (Please indicate) NONE
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: INSUFFICIENT LAND
Connection to Regional Sewer System: NOT AVAILABLE
Subsurface: SOILS NOT SUITABLE
Other disposal options:
5. Other Special Items:
PART IV - EVALUATION AND RECOMMENDATIONS
THIS FACILITY IS AN EXTENDED AIR ACTIVATED SLUDGE WWTP WITH
FLOW EQUALIZATION, A DITCH WITH ANOXIC ZONES FOR NITROGEN
REMOVAL, CLARIFICATION, TERTIARY FILTER, UV DISINFECTION, CASCADE
AERATION, AND THE OLD WWTP USED FOR PHOSPHORUS REMOVAL AND
SLUDGE STORAGE AND SLUDGE AEROBIC DIGESTION. THE DISCHARGE IS
TO UTLEY CREEK IN THE CAPE FEAR RIVER BASIN. THE RRO RECOMMENDS
THAT THE PERMIT TO DISCHARGE BE RENEWED IN ACCORDANCE WITH ALL
DIVISION POLICIES AND REGULATIONS AND CURRENT BASIN PLANS.
Signature of report pr
Date
Water Quality Regional Supervisor
Discharge Staff Report
Page 4

Permit No. NC0063096
SECTION A(1). EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
Beginning on the effective date of this permit and lasting until expiration. the Permittee is authorized to discharge
treated wastewater from Outfall 001. Such discharges shall be limited and monitored by the Permittee as
specified below:
EFFLUENT
CHARACTERISTICS
LIMITS
MONITORING REQUIREMENTS
Monthly
Average
Weekly
Average
Daily
Maximum
Measurement
Frequency
Sample
Type
Sample
Location'
Flow
1.5MGD
Continuous
Recording
I or E
BOD, 5 day. 20°C (April 1 -
October 31)2
5.0 mg/L
7.5 mg/L
Daily
Composite
E. I
BOD, 5 day. 20°C
(November 1 - March 31)2
10.0 mg/L
15.0 mg/L
Daily
Composite
E. I
Total Suspended Residue2
30.0 mg/L
45 mg/I,
Daily
Composite
E, I
NI-13 as N (April 1 -
October 31)
2.0 mg/L
Daily
Composite
E
NH3 as N (November 1 -
March 31)
4.0 mg/L
Daily
Composite
E
Dissolved Oxygen3
Daily
Grab
E
pH4
Daily
Grab
E
Fecal Coliform (geometric
mean)
200/100 ml
400/100 ml
Daily
Grab
E
Temperature °C
Daily
Grab
E
Total Residual Chlorines
19.0 IL'g/L
Daily
Grab
E
Conductivity
Daily
Grab
E
Total Nitrogen (NO2+ NO3 +
TKN)
Weekly
Composite
E
Total Phosphorus
Weekly
Composite
E
Chronic Toxicity6
Quarterly
Composite
E
Notes: L 0 cm , }L;-,, r (a L f. .y c._ (v.r-. a /2c,,, �.
1. Sample locations: E - Effluent, I - Influent. 9-6;y
2. The Monthly average effluent BOD5 and Total Suspended Residue concentrations shall not exceed 15% of the
« <6
respective influent value (85% removal).
3. The daily average dissolved oxygen effluent concentrations shall not be less than 6.0 mg/1.
4. The pH shall not be less than 6.0 standard units nor greater than 9.0 standard units.
5. Total Residual Chlorine shall be monitored only if chlorine is added to the effluent.
6. Chronic Toxicity (Ceriodaphnia) P/F at 90%; February, May, August, and November; See Section A(3).
There shall be no discharge of floating solids or visible foam in other than trace amounts.
! .
(ks ckwc

Z , 1.,Je5r t"-
DENR / DWQ / NPDES Unit 3- �---�
FACT SHEET FOR NPDES PERMIT DEVELOPMENT
NPDES Permit No. NC0063096 rk�ti p1 7
Facility Information
Applicant/Facility Name
Town of Holly Springs
Applicant Address
850 West Ballentine St.
Facility Address
850 West Ballentine St.
Permitted Flow (MGD)
1.5 MGD
Type of Waste
Domestic
Facility Class
IV
County
Wake
Facility Status
Renewal
Regional Office
Raleigh
Stream Characteristics
Receiving Stream
Utley Creek
Stream Classification
C
Drainage Area (sq. mi.)
0.73
Drainage basin
Cape Fear
Summer 7Q10 (cfs)
0.11
Subbasin
03-06-07
Winter 7Q10 (cfs)
0.25
Use Support
Not rated
30Q2 (cfs)
0.32
303(d) Listed
NA
Average Flow (cfs)
0.82
State Grid
Apex
IWC (%)
95
USGS Topo Quad
E 23 NE
Summary
• The Town of Holy Springs completed the expansion to 1.5 MGD in January 2000. ) They have
submitted a request for a second expansion to 2.4 MGD -f (113 AY
• The discharge to Utley Creek and the proposed expansion is not a long term solution for the
wastewater treatment needs of the town. A resolution by the Board of Commissioners was
adopted stating the commitment of Holly Springs to work on a regional solution for wastewater
disposal.
Facility Description The wastewater treatment facility consists of: mechanical bar screen, grit
chamber, anaerobic phosphorus removal basin, pump station, anoxic tank, aeration tank, package
plant with two aeration tanks, two clarifiers and two sludge stabilization tanks, final clarifier, tertiary
filter, UV disinfection system and cascade aerator.
Waste Load Allocation (WLA) The Division prepared the last WLA in January 1996 and developed
effluent limits for the expansion to 1.5 MGD. BOD5, NH3N, DO and residual chlorine are water
quality limited. /1),y ck(,_,,. , 6-1,1(t�.{,
Basinwide Plan Utley Creek flows to Harris Lake. The recommendation in the 2000 plan is for
Holly Springs to consider other means of disposal including connections to existing facilities in the
�"-
area due to high nutrients in the stream. Land use planning for the Harris Lake area is also
recommended in the basin plan.
Fact Sheet
Renewal -- NPDES Permit \C'0063096
Page I
)tue c, S %
�o�x;

COMPLIANCE REVIEW
Notices of Violation (NOVs) Notices of violation and civil penalties were assessed for the following
�ciolations: BOD5 and TSS on February 1999, Ammonia and Fecal Coliform on October 1999,
Ammonia on April and May 2000, BOD5 on May 2000, Chronic toxicity on May and June 2000 and
Fecal Coliform on September 2000.
Whole Effluent Toxicity (WET) Test Toxicity test failures were reported on August 1998 and May
and June 2000.
DMR Data Review DMRs were reviewed for 1999, 2000 and January -April 2001. The average flow
after the expansion to 1.5 MGD (Jan 2000) was 0.708 MGD. Prior to expansion the average flow was
0.516 MGD. Exceedances were previously listed in the NOV section of this fact sheet.
Instream Data The facility is a member of the Cape Fear Monitoring Coalition. There are no
sampling stations near the creek where they discharge. They monitored instream parameters until
August 1998. At this time/ there no assessment can be made of the upstream and downstream
conditions of the stream. Instream monitoring for Fecal Coliform should remain in the permit until
data is available to evaluate the impact on the stream.
j7 Data collected by DWQ from 1994 to 1997 showed that Dissolved Oxygen calculated saturation
values exceeded state standards 42% of the time. In 1997, the Division documented an algal bloom in
a pond downstream from the discharge from Holly Springs.
CORRESPONDENCE
Staff Report The Raleigh Regional Office recommends the renewal of the permit in the staff report
prepared in April 2000.
PROPOSED MODIFICATIONS
Update the description of the treatment system and eliminate the effluent limitations and monitoring
requirements for the 0.5 MGD flow.
PROPOSED SCHEDULE OF ISSUANCE
Draft Permit to Public Notice: June 13, 2001
Permit Scheduled to Issue: August 6, 2001
Fact Sheet
Renewal -- NPDES NC0)63O96
Page 2

State of North Carolina
Department of Environment
and Natural Resources
Division of Water Quality
James B. Hunt, Jr., Governor
Wayne McDevitt, Secretary
A. Preston Howard, Jr., P.E., Director
Ms. Stephanie Sudano, P.E.
Town Engineer
Town of Holly Springs
P.O. Box 8
Holly Springs, North Carolina 27540
Dear Ms. Sudano:
147A
DENR
November 13, 1997
Subject: NPDES Permit Modification
Permit No. NC0063096
Utley Creek WWTP
Wake County
Due to the recently issued Authorization to Construct (ATC) dated July 30, 1997, the Division has noted that
the Utley Creek Waste Water Treatment Plant will qualify as a Grade IV facility. Upon completion of the
upgrade to 1.5 MGD, the monitoring frequency required for certain parameters will increase accordingly.
Outfall 001 has been modified to include the following changes:
• BOD5, Total Suspended Residue, and NH3 as N shall be monitored daily instead of 3/Week.
• Dissolved Oxygen at the effluent (E) shall be monitored daily instead of 3/Week.
• pH shall be monitored daily instead of weekly.
• Fecal Coliform at the effluent (E) shall be monitored daily instead of 3/Week.
• Total Residual Chlorine (if chlorine added to the effluent) shall be measured daily instead of 3/Week.
• Conductivity at the effluent (E) shall be measured daily instead of 3/Week.
Please find enclosed the amended Effluent Limitations page for outfall 001 which should be inserted into your
permit upon completion of the upgrade described in the ATC. The old effluent sheet for flow at 1.5 MGD
should be discarded. All other terms and conditions contained in the original permit remain unchanged and in
full effect. This permit modification is issued pursuant to the requirements of North Carolina General
Statutes 143-215.1 and the Memorandum of Agreement between North Carolina and the U.S. Environmental
Protection Agency.
If any parts, measurement frequencies, or sampling requirements contained in this permit modification are
unacceptable to you, you have the right to an adjudicatory hearing upon written request within thirty (30)
days following receipt of this letter. This request must be in the form of a written petition, conforming to
Chapter 150B of the North Carolina General Statutes, and filed with the Office of Administrative Hearings,
Post Office Drawer 27447, Raleigh, North Carolina 27611-7447. Unless such demand is made, this decision
shall be final and binding.
P.O. Box 29535, Raleigh, North Carolina 27626-0535 Telephone [phone] FAX [phone]
An Equal Opportunity Affirmative Action Employer 50% recycled/ 10% post -consumer paper

If you have any questions regarding this modification to your permit, please contact Bethany Bolt or Steve
Pellei at [phone], Ext. 551 or Ext. 516, respectively.
Sincerely,
6a...1:4..
A. Preston Howard, Jr., P.E.
cc: Central Files
Raleigh Regional Office/Water Quality Section
NPDES Unit
Point Source Compliance Enforcement Unit
Aquatic Toxicology Unit
Technical Assistance and Certification Unit
EPA/Roosevelt Childress

A (1). EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS FINAL
Permit No. NC0063096
During the period beginning upon expansion above 0.50 MGD TO 1.50 MGD and lasting until expiration, the Permittee is authorized to discharge from outfall(s) serial
number 001. Such discharges shall be limited and monitored by the Permittee as specified below:
EFFLUENT CHARACTERISTICS
LIMITS
MONITORING REQUIREMENTS
Monthly
Average
Weekly
Average
Daily
Maximum
Measurement
Frequency
Sample
Type
Sample
Location'
Flow
1.50 MGD .
Continuous
Recording
I or E
.BOD, 5 day, 20°C (April 1 - October 31)2
5.0 mg/I
7.5 mg/I
Daily
Composite
E, I
BOD, 5 day, 20°C (November 1 - March 31)2
10.0 mg/1
15.0 mg/I
Daily
Composite
E, I
Total Suspended Residue2
30 mg/I
45 mg/I
Daily
'Composite
E, I
NH3 as N (April 1 - October 31)
2.0 mg/I
Daily
Composite
. E
NH3 as N (November 1 - March 31)
4.0 mg/I
Daily
Composite
E
Dissolved Oxygen3
Daily
Grab
E
Dissolved Oxygen3
3/Week _
Grab
U, D'
Chlorophyll -a
Weekly'
Grab
D
pH4
Daily .
Grab
E
Fecal Coliform (geometric mean)
200 / 100 ml
400 / 100 ml
Daily
Grab
E
Fecal Coliform (geometric mean)
200 / 100 ml
400 / 100 ml
3/Week
Grab
U, D'
Temperature °C
Daily
Grab
E
Temperature °C
3/Week
Grab
U, Di
Total Nitrogen (NO2 + NO3 + TKN)
Weekly5
Composite
E
Total Nitrogen (NO2+ NO3+ TKN)
Weekly5
Composite
U, D
Total Phosphorus
Weekly5
Composite
E
Total Phosphorus
Weekly5
Composite
U, D
Total Residual Chlorine8
19.0 pg/I
Daily
Grab
E
Conductivity
Daily
Grab
E
Conductivity
3/Week
Grab
U, D'
Chronic Toxicity6
_ Quarterly
Composite
E
Notes:
* Sample locations: E - Effluent, I - Influent, U - Upstream in the pool formed immediately upstream of the instream flow weir, D - Downstream on the existing dam
structure in a location so as to avoid contact between the ground and the sample bottle.
1 Upstream and Downstream samples of Dissolved Oxygen, Temperature, Fecal Coliform, and Conductivity shall be collected three times per week during the
months of June through September and once per week during the remaining months of the year.
2 The monthly average effluent BOD5 and Total Suspended Residue concentrations shall not exceed 15% of the respective influent value (85% removal).
3 The daily average dissolved oxygen effluent concentration shall no be less than 6.0 mg/I.
4 The pH shall not be less than 6.0 standard units nor greater than 9.0 standard units.
Total Nitrogen and Total Phosphorous shall be monitored weekly during the months June through September and monthly during the remaining months of
the year. Effluent and Instream monitoring shall be conducted on the same day:
6 Chronic Toxicity (Ceriodaphnia) P/F at 90%; February, May, August, and November, See Part III, Condition F.
7 Chlorophyll -a shall be monitored weekly during the months June through September; during the remaining months of the year, no monitoring is required.
8 Total Residual Chlorine shall be monitored only if chlorine is added to the effluent.
There shall be no discharge of floating solids or visible foam in other than trace amounts.

THE TOWN OF
Iio11y
Sprinqs
P.O. Box 8
128 S. Main Street
Holly Springs, N.C. 27540
[phone]
Fax: [phone]
Mayor's Office Fax:
[phone]
January 23, 2001
Charles H. Weaver Jr.
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
Dear Mr. Charles H. Weaver Jr.:
SUBJECT: RENEWAL NOTICE
As per your letter dated 12-4-2000 the Town of Holly Springs
respectfully applies for renewal of NPDES Permit NC0063096.
Since the last permit renewal, the Town of Holly Springs has increased
the size of the facility to 1.5 MGD. Additionally a Parshall Flume, Bar
screen, Aerated grit chamber and Grit Classifier have been added to the
influent.
One of the equalization basins has been cleaned and is now a
phosphorous removal basin. The clarifier that did exist in the EQ. basin
has been converted to an influent pump station for the new 1-mgd
carousel plant.
A new 70' in diameter clarifier, bridge filter, UV chamber and cascade
aeration was also added as a part of the upgrade to the facility.
The new 1.0 MGD facility officially came on line mid January of 2000.
Since that time, sampling has been done according to the permit after
expansion above 0.5 MGD. to 1.5 MGD.
Thank you for your consideration in this matter and if you require
further information you can contact me at [phone].
Respectfully,
Thomas Tillage, Director of Water Quality
Town of Holly Springs
Thomas Tillage/tt
850 W. BALLENTINE ST.
HOLLY SPRINGS, NC 27540
FEB - 2 2001

Section 1, Part 6- Present Operating Status
The Holly Springs; Utley Creek Wastewater Treatment Plant is a biological
nutrient removal facility. The original plant was a Davco .50 mgd. package
plant. An upgrade of the facility was completed in 1999, which added an s-I-eo-too
additional 1.0 mgd. The new facility operates in tandem with the older .50 J01
mgd. facility.
Following is an overview of the plant operation;
Headworks
A 4x6x4 junction box receives wastewater flow from three outfalls. The
flow then travels to a 1.5 Parshall Flume. An Isco flow meter with a rolled
paper chart, and digital real time readout records the flow. An Isco
refrigerated sampler is also located at the flume and sampling is done flow
proportionally.
The flow from the flume then enters a channel, which contains a Parkson
Aqua -Guard mesh -screening unit. The screen has a float that sends an on -off
signal to the unit. During times that temperatures might reach 32 degrees or
less the screen runs continuously to avoid freezing. Screenings are directed
into a compactor on the screen and then discharged to a dumpster. There is a
second channel adjacent to the screening unit for future use.
After screening, the flow enters the Aerated Grit Chamber. This unit is
imhoff cone shaped and air is supplied to the unit by means of two positive
displacement blowers. The air keeps the solids in suspension allowing the
larger solids to drop to the bottom of the tank. These solids are then pumped
out of the tank by a grit pump to a Grit Classifier. The Grit Classifier
dewaters the grit and augers the material to a nearby dumpster while the
water is returned to the waste stream. The water exits the Grit Chamber via
an effluent weir and moves to the Phosphorus Removal Basin.
Phosphorus Removal Basin
The .125mgd. Phosphorus Removal Basin was converted from an aeration
basin constructed in 1985. The wastewater enters this basin and is mixed
with returned activated sludge (RAS) from the clarifier. The RAS is
measured at the clarifier by a telescoping valve and at the Phosphorus Basin
by a Kennison Nozzle. The Phosphorus Basin is anaerobic and has two
mixers to keep the substrate in suspension. Phosphorus is removed using the
process of Luxury Uptake.
Influent Pump Station
From the Phosphorus Removal Basin, the water enters the IPS. This station
was also converted from what were the Clarifiers in the 1985 constructed:
plant. The station was converted by cutting three exit holes in the new
0
CO
W
J Z
0 co
CC W
3• 0
y
CC
w
a

Phosphorus Removal Basin and adding a 12 inch siphoning pipe. Water is
pumped from the IPS to a splitter box by three 1800 gpm. variable speed
pumps. The pumps are controlled by a PLC, which allows the water to be
removed from the station at the operator's discretion. This allows the
operators to run the Phosphorus Removal Basin as an " Equalization basin"
or " Nutrient Removal basin" as previously described. This basin is also
monitored by a programmable dialer, which allows alarms calls to be
transmitted on a 24-hour basis.
Splitter Box
The IPS pumps water to a Splitter Box, which allows the operators to divert
the flow of water to either the new 1.0 mgd. Carousel Plant or the existing
.50 mgd. Package Plant. The splitter box is equipped with a blind flange to
facilitate piping for future upgrades.
Carousel Plant
Water from the Splitter Box enters the Carousel Plant in the Anoxic zone
where Denitrification takes place. Water also enters this zone through a
Denitrification gate located downstream from the Surface Aerators. Flow
leaves the Anoxic Zone and enters the Aerobic zone for normal pollutant
removal. Flow is pushed clockwise in the Ditch by two 75 Hp. Surface
Aerators and leaves the Carousel Plant via an adjustable effluent weir to the
new Clarifier or the existing Clarifier.
Package Plant
Wastewater from the Splitter Box may also be diverted to the existing .50
mgd. package plant. Flow enters this plant through a Splitter Box at the
influent end which also has a mechanical bar screen. Water is diverted from
the Splitter Box to two-.250 mgd. aeration basins. Air is supplied to the
aeration basin by three 50 Hp. blowers. Water from the aeration basin is
moved by gravity through pipes and junction boxes to the Clarifier. The
Clarifier has booms that move back and forth keeping the sludge moving at
the bottom of the unit and removing RAS and waste activated sludge (WAS)
to either the aeration basin or digester.
New Clarifier
Flow from the Carousel Plant enters the middle of the Clarifier and settles on
the floor of the unit. A scraper unit travels the floor of the Clarifier moving
the sludge toward the center and out through a telescoping valve as either
RAS or WAS. The treated water from the Clarifier flows over a weir at the
peripheral wall and exits to one of two Bridge Filters.
Digesters
In the Package Plant sludge is wasted to a .100 mg., Digester located in the
center of the Plant. Sludge can be wasted from either the new or the old

plant to this Digester. There is also a .073mg. sludge holding tank in the
Package Plant. Sludge can be wasted to two .033mg. digesters located at the
original 1985 plant. One of the .125 mg. aeration basins in the original 1985
plant was converted to a Digester during the 1999 upgrade of the facility. At
this time, the Town of Holly Springs has .364 mg. of Digester and sludge
holding capability.
Bridge Filters
Treated water from the new or existing Clarifiers exits to either one of two
Bridge Filters or both Clarifiers might go through the same Filter. Direction
of flow to the filters depends on the weather, flow, or mechanical problems.
The flow enters the filter over a weir, travels down a channel and enters cells
by way of openings along its wall. The cells are filled with sand, anthracite,
and some small gravel. Water is filtered through this media and out the
bottom of the unit to a channel by which it exits the unit. The cleaning of the
media is done according to water level and or preset conditions. The
cleaning is done by a bridge that travels to each cell, isolates the cell, pumps
surface water into the cell and pulls the solids out of the media. The solids
and water are then deposited into a backwash tray and delivered to the IPS
through the piping system.
Ultraviolet Disinfection System
Two banks of UV lights, which contain 10 racks for a total of 80 bulbs,
make up the UV system. The peak process flow of the system is 3.75 mgd.
with a retention time of 7.74 seconds. The control panel of the system has a
screen, which enables the operator to program or view status of the system.
Normally one bank of lights operates at the time but can be programmed to
alternate once per week. Banks can be cut on or off as needed for
maintenance. At the effluent of the channel is the Automatic Leveling
Device (ALD). This device maintains a constant water level in the channel,
which in turns assures the detention time for disinfecting to take place.
Cascade aerator
From the UV system water flow to the last treatment unit in the facility. The
cascade aerator is comprised of a baffled still well that allows water to
gravitate slowly upward and out over a rectangular weir. The water is then
aerated as it flows over a series of 12-inch steps and exits into Utley Creek.
A refrigerated sampler, flow meter and automatic rain gauge is located at the
aerator.
Attached you will find a description of the components of the existing and
upgraded facility.

TOWN OF HOLLY SPRINGS
UTLEY CREEK WASTEWATER TREATMENT PLANT
UNIT PROCESS DESCRIPTION
NEW CON ENTIONAL PROCESS TRAIN (Completed Z000)
MECHANICAL BAR SCREEN
Number of screens 1
Screen capacity, Average Daily Flow, mgd 1.5
Peak Daily Flow, mgd 3.75
Screen opening, inch 0.25
Screen channel width, inches 30
Screen channel depth, inches 66
Angle of inclination from horizontal, degree 75
Capacity, cubic yards per hour 0.77
Drive motor horsepower, hp 0.75
Electrical service 480 volt, 3 phase, 60 hz
Screenings wash compactor
Number of compactors 1
Capacity, cu. ft/hr 3
Drive motor horsepower, hp 2.0
Electrical Service 480 volt, 3 phase, 60 hz
AERATED GRIT REMOVAL SYSTEM
Number of grit chambers, 14' x 14' x 12 SWD 1
Hydraulic retention time, min, at average daily flow 16.89
at peak daily flow 6.75
Surface loading race, gpd,sq ft. at average daily flow 7653
at peak daily flow 19132
Draft tube diameter, inches 28
Number of grit lift pumps 1
Grit lift pump capacity, gpm 200
Grit lift pump total dynamic head, ft 2101.9
Number of grit dewatering screws 1
Grit dewatering screw surface loading rate, gpd/sq ft 10
Number of blowers, positive displacement type 2
.Blower capacity, SCFM, each at 5.0 psig 60
DEHR - WATER QUALITY
POINT SOURCE BRANCH

Blower drive horsepower, hp, each 5.0
Electrical service 480 volt, 3 phase, 60 hz
ANAEROBIC/EQUALIZATION BASIN
Number of tanks
1
Tank volume, gallons 161,568
Hydraulic retention time, hr, at avg. daily flow 1.29
Number of mixers, floating type 2
Mixer drive horsepower, hp, each 3
Electrical service 480 volt, 3 phase, 60 hz
INFLUENT LIFT PUMPS
Number of pumps, submersible, non -clog type 3
Pump capacity, each, gpm at 31.8 ft TDH at 1200 rpm 1825
Drive motor horsepower, each, hp 30
Electrical service 480 volt, 3 phase, 60 hz
Accessories: pumps are equipped with level controlled variable speed drives
ANOXIC TANK
Number of anoxic tanks 1
Tank volume, gallons 216,772
Hydraulic retention time, hr, at avg. daily flow 3.46
Number of mixers, fixed platform type 1
Mixer drive horsepower, hp 10
Electrical service 480 volt, 3 phase, 60 hz
AERATION TANK
Number of aeration tanks, oxidation ditch type 1
Tank volume, million gallons 1.14
Hydraulic retention time, hr, at avg. daily flow 18.33
Number of aerators per tank 2
Aerator drive horsepower, hp, each 75
Aeration horsepower capacity, hp/million gallons 65.78
Aeration capacity of each aerator, lb 02/hp/hr, at std. conditions 3.5
Total aeration capacity, lb 02/br S25

FINAL CLARIFIER
Number of Clarifiers, 70 ft. diam. x 15 ft SWIG 1
CIarifier volume, gallons 431,796
Hydraulic retention time, hr, at avg. daily flow 6.91
Clarifier surface area, sq. ft. 3848.45
Surface overflow rate, gpd/sq. ft., at average daily flow 390
Clarifier weir length, ft 219.91
Weir overflow rate, gpd/lin. ft 6825
Solids loading rate, lb solids/sq. ft./day, incl. sludge recycle flow 26
TERTIARY FILTER
Number of filters, (travelling bridge type) 1 i
Filter area, sq. ft. 360
Design average flow rate, mgd 1.0*
Filtration rate, gprn/sq. ft. at average daily flow 2,0
at peals daily flow 5.0
* New filter shall work in conjunction with existing package plant filter which is designed to
handle 0.5 mgd.
UV DISINFECTION SYSTEM
Number of UV channels, 2.5 ft wide by 2.0 ft. liquid depth 1
Number of UV banks 2
Number of UV modules, per bank 10
Number of lamps per UV module 8
Total number of UV lamps 160
Hydraulic retention time, seconds, at average daily flow 11.5
Accessories: Control and inst1rnentation panel, automatic level controller and portable
cleaning tank..
AEROBIC SLUDGE STABILIZATION/STORAGE
Number of sludge digestion tanks 5
Tank #1 Volume, gallons, (0.25 package plant) 26,928
Tank #2 Volume, gallons, (0.25 package plant) 26,928
Tank #3 Volume, gallons, (0.25 package plant) 161,568
Tank #4 Volume, gallons, (0.5 package plant) 100,000
Tank #5 Volume, gallons, (0.5 package plant) 73,000
Total Tanks Volume, gallons 388,424

EXISTING 0.5 MGD PACKAGE TREATMENT PLANT (Completed 1994)
Number of aeration tanks 2
Aeration tank volume,gallons, each 314,000
Total aeration tank volume, gallons 628,000
Number of clarifiers 2
Clarifier surface area, sq. ft., each 540
Total clarifier surface area, sq. ft. 1080
Sludge Stabilization tanks 2
Total sludge stab. tank volume, gal., (see Tanks 4 & 5 abOVe) 173,000
TERTIARY FILTER
Number of filters 1
Filter area, sq. ft. 173
Design average flow rate, mgd 0.5
Design peak flow rate, mgd 1.25
Filtration rate, gpm/sq. ft. at average daily flow 2.0
at peak daily flow 5.0

Section 1, Part 6- Potential Facility Changes
At this time upgrade of the Holly Springs Wastewater treatment facility to
4.88 mgd. is pending.

i
FLOW
METERING
SCREENING &
GRIT REMOVAL
ANAEROBIC
ACTIVATED SLUDGE BNR SYSTEM
CLARIFIER
ANOXIC
AEROBIC
r - - " ` PACKAGE TREATI EN 1 T SYSTEM
TO LAND . i
DISPOSAL
AEROBIC
DIGESTION
fi
TERTIARY
FILTERS
FIGURE 1: EXISTING WWTP FLOW SCHEMATIC
CASCADE
AERATION
H: 1
UV
DISINFECTION
O 0
o p
DISCHARGE

Sludge Management
The Town of Holly Springs at this time has digester and sludge holding
facilities capable of storing .364 mg. The sludge from the facility is tested
once annually per the 503 rules governing biosolids. Biosolids from the
facility are land applied on property permitted by East Coast Resources
(formerly Wallace Woodall Septic Service). The Town of Holly Springs is
presently working with Synagro to obtain a land application permit in the
town's name. The permit application is now pending action from NCDENR
at this time.

State of North Carolina
Department of Environment
and Natural Resources
Division of Water Quality
James B. Hunt, Jr., Governor
Bill Holman, Secretary
Kerr T. Stevens, Director
August 18, 2000
Mr. Thomas Tillage
Town of Holly Springs
P.O. Box 8
Holly Springs, NC 27540
A7A
NCDENR
NORTH CAROLINA DEPARTMENT OF
ENVIRONMENT AND NATURAL RESOURCES
Subject: NPDES Permit Modification
Permit NC0063096
Holly Springs WWTP
Wake County
Dear Mr. Tillage:
The Division is beginning the cycle of permit renewals for the Cape Fear river basin. An examination of the Cape
Fear basin plan and the NPDES permit schedule has revealed that the existing expiration dates in Cape Fear NPDES
permits do not coincide with the revised permit expiration dates for the basin. This discrepancy could create unnecessary
delays in the processing of over 200 permit renewals. Accordingly, the Division is changing the permit expiration dates for
NPDES permits in the Cape Fear river basin.
This permit modification changes the expiration date of the subject permit in subbasin 30607 to July 31, 2001. Please
find enclosed the revised permit cover page. Insert the new cover page into your permit and discard the old page. All
other terms and conditions contained in the original permit remain unchanged and in full effect. This permit modification
is issued under the requirements of North Carolina General Statutes 143-215.1 and the Memorandum of Agreement
between North Carolina and the U. S. Environmental Protection Agency.
In accordance with the modification of the permit expiration date, the new due date for your renewal application is
February 1, 2001. Renewal application forms will be sent to you approximately 6-8 weeks in advance of the new due date
or you may download the forms from the NPDES web site at http://h2o.enr.state.nc.us/NPDES/documents.html.
You will need to download Short Form A. If you have already submitted a permit renewal form, there is no need to
submit any other forms to the Division; the application will be processed during the renewal period for your subbasin.
If any part of this permit modification are unacceptable to you, you have the right to an adjudicatory hearing upon
written request within thirty (30) days following receipt of this letter. This request must be a written petition conforming
to Chapter 150B of the North Carolina General Statutes, filed with the Office of Administrative Hearings (6714 Mail
Service Center, Raleigh, North Carolina 27699-6714). Unless such demand is made, this decision shall be final and binding.
If you have any questions concerning this permit modification, please contact Natalie Sierra at [phone],
extension 551.
cc: Central Files
Raleigh Regional Office, Water Quality Section
Point Source Compliance Enforcement Unit
NPDES Unity
1617 Mail Service Center, Raleigh, North Carolina 27699-1617
An Equal Opportunity Affirmative Action Employer
Sincerely,
A41-4-1quoiew-A--
Kerr T. Stevens
Telephone [phone] FAX [phone]
VISIT US ON THE INTERNET @ http://h2o.enr,state.nc.us/NPDES

r
Permit NC0063096
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
PERMIT
TO DISCHARGE WASTEWATER UNDER THE
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
In compliance with the provision of North Carolina General Statute 143-215.1, other lawful
standards and regulations promulgated and adopted by the North Carolina Environmental
Management Commission, and the Federal Water Pollution Control Act, as amended,
Town of Holly Springs
is hereby authorized to discharge wastewater from a facility located at the
Holly Springs WWTP
NCSR 1115
Holly Springs
Wake County
to receiving waters designated as Utley Creek in the Cape Fear River Basin
in accordance with effluent limitations, monitoring requirements, and other
conditions set forth in Parts I, II, III and IV hereof.
This permit shall become effective September 1, 2000.
This permit and authorization to discharge shall expire at midnight on July 31, 2001.
Signed this day August 18, 2000.
Kerr T. Stevens, 'rector
Division of Water Quality
By Authority of the Environmental Management Commission