NC0069841_Permit (Issuance)_20000313

NPDES DOCIMENT SCANNING COVER SHEET
NPDES Permit:
NC0069841
Crooked Creek WWTP
Document Type:
ermit Issuance
Wasteload Allocation
Authorization to Construct (AtC)
Permit Modification
Complete File - Historical
Engineering Alternatives (EAA)
Correspondence
Owner Name Change
Technical Correction
Instream Assessment (67b)
Speculative Limits
Environmental Assessment (EA)
Document Date:
March 13, 2000
Mita document Jura printed on reuse paper - ignore any
contest on the reYerose wide

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
March 13, 2000
Mr. Charles P. O'Cain
Interim Public Works Director
P.O. Box 987
Monroe, North Carolina 28111-0987
VA
NCDENR
Subject: NPDES Permit Issuance
Permit No. NC0069841
Crooked Creek WWTP #2
Union County
Dear Mr. O'Cain:
The 30-day public notice and comment period, for the NPDES draft permit NC0069841, has
expired. The Division has considered the comments received and has modified the permit in
accordance with current Division policy and procedure, all responses to comments and revisions
made to draft permit, NC0069841, are explained below:
Comment 1: Implement a daily or weekly average total residual chlorine limit instead of the
daily maximum limit.
Response: The NPDES permit has been modified to reflect a weekly average total residual
chlorine limit of 17.0 ug/L and a daily average total residual chlorine limit of 28.0 ug/L.
Attached is the NPDES Permit No. NC0069841 issued January 31, 2000. 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 US Environmental Protection Agency dated
December 6, 1983.
Please take notice that this permit is not transferable. Part II, E.4. addresses the requirements to
be followed in case of change in ownership or control of this discharge. This permit does not
affect the legal requirement to obtain other permits which may be required by the Division of
Water Quality or permits required by the Division of Land Resources, Coastal Area Management
Act or any other Federal or Local government permit that may be required.
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 a written
petition conforming to chapter 150B of the North Carolina General Statutes, filed with the Office
1617 Mail Service Center, Raleigh, North Carolina 27699-1617 Telephone [phone] FAX [phone]
An Equal Opportunity Affirmative Action Employer Internet: http://h2o.enr.state.nc.us/

Union County Publics Works Division
Permit No. NC0069841
Crooked Creek #2
Page 2
of Administrative Hearings, Post Office Drawer 27447, Raleigh, North Carolina 27611-7447.
Unless such demand is made, this decision shall be final and binding.
If you have any questions concerning this permit, please contact Mr. Michael Myers at telephone
number [phone], extension 508.
oincerelIy .
riginal signed By
David A. Goodrich
Kerr T. Stevens
cc: Mooresville Regional Office - Water Quality Section
Division of Water Quality/Aquatic Toxicology Unit
Central Files
NPDES Files
Point Source Compliance/Enforcement Unit
EPA —Region IV

Permit No. NC0069841
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,
Union County
is hereby authorized to discharge wastewater from a facility located at
Crooked Creek WWTP #2
Sardis Church Road
off of SR 1515
Monroe, NC
Union County
to receiving waters designated as North Fork Crooked Creek in the Yadkin Pee -Dee 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 April 1, 2000.
This permit and authorization to discharge shall expire at midnight on January 31, 2004.
Signed this day March 13, 2000.
Original Signed By
David A. Goodrich
Kerr T. Stevens, Director
Division of Water Quality
By Authority of the Environmental Management Commission

SUPPLEMENT TO PERMIT COVER SHEET
Union County
is hereby authorized to:
Permit No. NC0069841
1. Continue operation of an existing 1.9 MGD wastewater treatment system, located at the Crooked
Creek Wastewater Treatment Plant, Sardis Church Road, off of SR 1515, Monroe, North Carolina
and consisting of the following treatment units:
• Six influent pump stations
• Manual bar screen
• Mechanical bar screen
• dual oxidation ditches with six aerators
• Four circular secondary clarifiers
• Six high rate tertiary rapid sand filters
• Three chlorine contact basins
• Dechlorination
• Cascade post aeration system
• Four aerobic (mechanical) sludge digester
• Lime and polymer feed installations
• One effluent pump station
and;
2. Discharge treated domestic wastewater from said treatment works at the location specified on the
attached map through outfall 001 into North Fork Crooked Creek which is classified C waters in the
Yadkin -Pee Dee River Basin.

Latitude:
Longitude:
Ouad #:
Stream Class:
Receiving. Stream:
Permitted Flow:
Facility Information
35°05'47" Sub -Basin:
80°35'53"
G16SE
C
North Fork Crooked Creek
19 MGD
03-07-14
Facility ,
Location
Union County
NC0069841
Crooked Creek Wastewater Treatment Plant #2

i
Permit NC0069841
A. (1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS - Final
During the period beginning on the effective date of the permit and lasting until expiration, the
Permittee is authorized to discharge treated wastewater from outfall(s) 001. Such discharges shall be
limited and monitored by the Permittee as specified below:
EFFLUENT z
,, .. y.. .>.. ..."' <,...,.. .>td,
. n ,, ,. •C ." Y
CHARACTERISTICS
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M 4- S S .'Y_. z i",; 1 C� t ,Y� _
wy
-�� '
u a _
�...... •�::tsY .x
�;Monthly;
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a: * ,era ' {
��l�!;�� E:�}
s Weekf��_'�
: ;Avera er,, ; f
� e �
r=Dail
S�
,, 1A era a
��g ;
Measurement
Fre uen
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.`'Sam -ate° _
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1�
_�;��. c liott...7��r
Flow
1.9 MGD
Continuous
Recording
I or E
BOD, 5-day, 20 °C2 (Summer)3
5.0 mg/I
7.5 mgll
3/Week
Composite
I,E
BOD, 5-day, 20 °C2 (Winter)3
10.0 mg/I
15.0 mg/I
3/Week
Composite
I,E
Total Suspended Residue2
30.0 mg/I
45.0 mg/I
,
3/Week
Composite
I,E
NH3-N (Summer)3
2.0 mg/I
3)Week
Composite
E
NH3-N (Winter)3
4.0 mg/I
3/Week
Composite
E
Total Residual Chlorine
17 ug/L
28.0 ug/L
3/Week
Grab
E
Total Nitrogen
(NO2 + NO3 + TKN)
Monthly
Composite
E
Total Phosphorus
Monthly
Composite
E
Copper
Monthly
Composite
_ E
Chronic Toxicity4
Quarterly
Composite
E
PH5
3/Week
Grab
E
Dissolved 0xygen6
3/Week
Grab
E,U, D
Fecal Coliform 7
200/100 mi
400/100 m1
3/Week
Grab
E,U, D
Temperature
Daily
Grab
E, U,D
Conductivity
3lWeek
Grab
U,D
Footnotes:
1. Sample Location: E - Effluent, I - Influent, U - Upstream 50 feet from the outfall, D - Downstream
'A mile below discharge and at SR 1514. Upstream and Downstream samples shall be grab
samples. In -stream samples shall be collected three times per week during June, July , august,
and September and once per week during the rest of the calendar year. Instream monitoring is
provisionally waived in light of the permittee's participation in the Yadkin -Pee Dee River Basin
Association. Instream monitoring will be immediately reinstated should the permittee end its
participation in the Association.
2. The monthly average effluent BOD5 and Total Suspended Residue concentrations shall not exceed
15% of the respective influent value (85% removal).
3. Summer is defined as the period from April 1 through October 31, while winter is defined as
November 1 through March 31.
4. Chronic Toxicity (Ceriodaphnia) P/F at 90%: January, April, July & October (see Part I. A. (2.)).
5. The pH of the effluent shall not be less than 6.0 nor greater than 9.0 (on the standard units scale)
6. The daily average dissolved oxygen effluent concentration shall not be less than 6.0 mg/1.
7. Fecal Coliform shall be calculated using the geometric mean, according to the procedure detailed in
Part II. Section A, Paragraph 9b.
There shall be no discharge of floating solids or visible foam in other than trace amounts.

i.
Permit NC0069841
A. (2) 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, quarterly 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 January, April, July, and October. 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 definition 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.

fv1
PUBLIC NOTICE
STATE OF NORTH CAROLINA
ENVIRONMENTAL
' MANAGEMENT
;C.JThMISSIoN/NPDES I,JNIT
16 7.MAIL SERVICE CENTER
' RALEIGH, NC 27699-1617
r NOTIFICATION OF INTENT
, TO ISSUE NPDES .''`,'
• WASTEWATER PERMIT ':Tr:T`ti
Of} the basis of thorough staff re-,':
via'w and application of NC Gener-.
al,Statuta 143,21. Public law 92- i
500_and other .lawful standards•
,
and regulations, the North Caroli
na 'Environmental Management
Commission proposes to issue a
National Pollutant Discharge Elimi-
nation System'(NPDES) wastewa-
ter discharge permit to • the;
person(s) listed on the attached`;;
pages effective 45 days from the
puplish date of this notice. .;t•:,
Written commentg regarding the'.
proposed permit will be accepted ,
until 36 days after the publish datti+'-
of' this notice. At comments :,i %'-
ceeved prior to that date are 66{r %,-
sidered irt,the 1irlal deterrnina"
to arding' the, oropesed pe
' T Director of the NC Division 6'
W if
Duality may decide to hold
a public meeting for.the proposed
permtt Should thei-DNI Ion receive
• ;a yfiignlficant agree of pu511Cinter
iles of the draft permitand oth'
'Srupporting information on file;'-
Oita determine condltlorl8•press
in the draft permit are available i,`
h request arid payment of t
gists of reprdductioh. Mail co
w rits 8nd!'orrequests fbr intor.,,,.
motion to the NC Division of Water
09aiity at ;tile above address ors
ca3I Ms. Christie Jackdon at (919PVII
743;5083, extension 538. Please
include the NPDES perriiltnumbet:;`
(attached) In: any cor111Punlcatio
tnferested persons may else vlsl ,
the Division of Water Quality at'.
51,2;N. Salisbury Street RatelgF1
N 27604114,8 between the':
hours' of'8 0t"a.m. 'and 5:00 p mn`;
to review mformation on file. ;
N DES. Permit Number
60,4t,atinfon County Public+
r%s„ Department- Crooked
Ct ak'WWTP #2, P.O..Boxi 987,
M nrot., NC 28111 his 'applied for
a ,peunit renewal for a facility
Ideal- .
erg in -Union County discharging
• treatett wastewater iht0North' :F6rk
Crooked Creek in the Yadkin -Pee.
Dee River Basin. Currently BOb,.
artmbnia, and Dissolved Oxygen
arp water quality limited. This dis-
cherge.may, affect..:future. alloca-
rr tides 'RI this portion of the receiving
xIst si
N�
W
NORTH CAROLINA,
UNION COUNTY.
AFFIDAVIT OF PUBLICATION
Before the undersigned, a Notary Public of said County and State, duly
commissioned, qualified, and authorized by law to administer oaths,
personally appeared .Mal vin Enderle
who being first duly sworn, deposes and says: that he is
P.u.blisher engaged in the publication
of a newspaper known as The Enquirer -Journal, published, issued, and
entered as second class mail in the City of Monroe in said County and
State; that he is authorized to make this affidavit and sworn statement;
that the notice or other legal advertisement, a true copy of which is
attached hereto, was published in The Enquirer -Journal on the following
dates:
f//
/999
and that 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 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 I-597 of the General
Statutes of North Carolina.
This . . . . . a . . . da
at
0 11
Sworn to and , Sworn s
DEC1 _ nnn DEC n '999
DENR -4141 Tarfliyln expir
POINT 56tIRCE BRANCH
/999
ed before me, this . day
May 11, 2003
ot.21)44.. /999
Nutary Public
Permit Number ltJ a.. � PDES
,;.4'€ VBJolirra Water Sarv, r,.A
0lb9 Acres, P.O. Box "^
9t�8, Charlotte, NC 28224 has
a .ilietJ for 'a permit renewal for a
fatility, located in Union County.
di chargging treated wastewater in-
to No}1h Fork Crooked Creek in N PDts
the Yadkin -Pee Dee River Basin.
Carter -Ay BOP, an)mcinia, and dis dackoar)
s vet oxygen are water qualify
i1ed: This discharge may affect
ure allocations in this portion of J'�' -0
receiving; Stream, -, ' -'
DES'::, _Permit Number
-Oily of !Monroe (John
Box 69 • Mon -
NO 28111` has applied for a
mit rones+ial for a facility located
Union County discharging treat -
wastewater into Stewarts
Currenek in the Yadkin -Pee Dee Riv
Basin. tly nQ parameters
c rge may affect tuttUire alloca
ti s in this portion of. the receiving,
steam. • P.O. Box 5040
o center 11, 1999. 500 W. Jefferson St.
Monroe, N.C. 28111-5040
a7� 99- /4/7
INCHES: 934
MONROE, N.C.
ACCOUNT #:
c' 3 /oo,Z 3 J
COST: $ 7(n.51/
water quality_irriite ;.ThiS'dis'.
—IN ACCOUNT WITH—
P Enquirer -Journal
Important Legal Document, Please Retain

SOC Priority Project: No
To: Permits and Engineering Unit
Water Quality Section
Attention: Charles Weaver
Date: June 22, 1999
NPDES STAFF REPORT AND RECOMMENDATION
County: Union
MRO No.: 99-88
Permit No. NC0069841
PART I - GENERAL INFORMATION
I. Facility and Address: Crooked Creek WWTP #2
Union County Public Works Dept.
Post Office Box 987
Monroe, North Carolina 28111
2. Date of Investigation: June 9, 1999
3. Report Prepared by: Samar Bou-Ghazale, Env. Engineer I
4. Persons Contacted and Telephone Number: Mr. Mark Tye, Supervisor; [phone]
5. Directions to Site: From the intersection of US Hwy 74 and SR 1515 (Sardis Church Road),
travel north on SR 1515 approximately 0.5 mile. The WWTP entrance road is located on the left
side of the road, just before crossing South Fork Crooked Creek.
6. Discharge Point(s), List for all discharge points:
Latitude: 35° 05' 47" Longitude: 80° 35' 53"
Attach a USGS map extract and indicate treatment facility site and discharge point on map.
U.S.G.S. Quad No.: G16SE U.S.G.S. Quad Name: Bakers
7. Site size and expansion area consistent with application? Yes.
8. Topography (relationship to flood plain included): Topography is flat; the WWTP appears to be
located just above the 100 year flood plain.
9. Location of nearest dwelling: None within 1000 feet.
10. Receiving stream or affected surface waters: North Fork Crooked Creek.

Page Two
a. Classification: C
b. River Basin and Subbasin No.: Yadkin 030714
c. Describe receiving stream features and pertinent downstream uses: Receiving stream is
approximately 6-8 feet wide x 6-12 inches deep with sandy/muddy bottom and very slow
water velocity. General "C" classification uses downstream (rural/agriculture).
PART II - DESCRIPTION OF DISCHARGE AND TREATMENT WORKS
1. a. Volume of wastewater to be permitted: 1.9 MGD (ultimate design capacity)
b. Current permitted capacity of the wastewater treatment facility: 1.9 MGD
c. Actual treatment capacity of the current facility (current design capacity): 1.9 MGD
d. Date(s) and construction activities allowed by previous Authorizations to Construct issued
in the previous two years: N/A
e. Please provide a description of existing or substantially constructed wastewater treatment
facilities: The existing WWT facilities consist of 6 influent pumps, one mechanical and
one manual bar screen, dual oxidation ditches with six (6) aerators, four secondary
clarifiers, six (6) high rate tertiary filters, three (3) chlorine contact basins, dechlorination,
cascade post aeration, four (4) aerobic (mechanical) sludge digesters, one (1) sludge
holding tank, three (3) inactive sludge drying beds, lime and polymer addition and one
effluent pump station.
f. Please provide a description of proposed wastewater treatment facilities: N/A
g. Possible toxic impacts to surface waters: None other than chlorine.
h. Pretreatment Program (POTWs only): Approved. The pretreatment program is inactive
at this time since no significant industrial users are discharging to the WWTP.
2. Residuals handling and utilization/disposal scheme:
a. Residuals are land applied. DWQ Permit No. WQ0007486.
Residuals Contractor: Amsco
Telephone No.: [phone].
b. Residuals stabilization: PSRP (Class B)
3. Treatment plant classification: Class III
4. SIC Code(s): 4952 Wastewater Code(s) 01
Main Treatment Unit Code: 10103

Page Three
PART III - OTHER PERTINENT INFORMATION
1. Is this facility being constructed with Construction Grant Funds or are any public monies involved
(municipals only)? Public monies were used in the expansion of this facility.
2. Special monitoring or limitations (including toxicity) requests: None at this time.
3. Important SOC, JOC or Compliance Schedule dates (Please indicate): N/A
4. Alternative Analysis Evaluation: N/A
5. Air quality and/or groundwater concerns or hazardous materials utilized at this facility that may
impact water quality, air quality, or groundwater: No AQ or GW concerns nor are hazardous
materials utilized at this facility with the exception of chlorine.
PART IV - EVALUATION AND RECOMMENDATIONS
The Union County Public Works Department (UCPWD), has applied for Permit renewal for the
subject facility. The WWTP appeared in good operational condition at the time of the inspection and
the effluent was very clear. However, the receiving stream was muddy. Therefore, the impact of the
discharge on the receiving stream could not be observed.
Pending review and approval by P& E, it is recommended that the permit be renewed as
requested.
Signature ofre:ort
G-zz-19
pparer Date
'2
Water Quality Regional Supervisor Date

DENR/ DWQ
FACT SHEET FOR NPDES PERMIT DEVELOPMENT
NPDES No. NC0069841
Facility Information
Applicant/Facility Name:
Crooked Creek WWTP #2
Applicant Address:
P.O. Box 987 Monroe, North Carolina 28111-0987
Facility Address:
Sardis Church Road; off of SR 1515
Permitted Flow
1.9 MGD
Type of Waste:
Domestic and Tight industrial
Facility/Permit Status:
Renewal
County:
Union
Miscellaneous
Receiving Stream:
North Fork
Crooked Creek
Regional Office:
Mooresville
Stream Classification:
C
USGS Topo Quad:
G 16SE
303(d) Listed?:
No
Permit Writer:
Michael Myers
Subbasin:
03-07-14
Date:
December 8, 1999
Drainage Area (mi2):
13.65 mi2
Summer 7Q10 (cfs)
0 cfs
Winter 7Q10 (cfs):
0.08 cfs
Average Flow (cfs):
13 cfs
IWC (%):
100%
Primary SIC Code:
4952
SUMMARY
The Crooked Creek WWTP is located within the Yadkin Pee -Dee River Basin in Union County North
Carolina. The facility maintains one outfall (001). The plants influent is composed of 100% domestic
wastewater. At the last renewal Crooked Creek WWTP was participating in the pretreatment program with
two Significant Industrial Users (SIU). Since the last NPDES permit renewal both of the Sills, which were
discharging to the Crooked Creek facility, have gone out of business and ceased discharging to the facility.
The facility has two flow expansions the first one to 1.0 MGD and the second to the currently permitted flow of
1.9 MGD. Prior to the expansion to 1.0 MGD the facilities discharge was located in the South Fork Crooked
Creek. This stream is a zero flow stream (7Q10 = 0 and 30Q2 = 0). Therefore, in order to accommodate
the expansion Crooked Creek moved the discharge location from South Fork Crooked Creek to the North Fork
Crooked Creek. The North Fork Crooked Creek has a 7Q10 equal to zero but has a positive 30Q2.
As noted the receiving stream is North Fork Crooked Creek, which is class C water. This reach is not listed on
the 303(d) list and according to the Yadkin Pee -Dee River Basin Plan is meeting its designated uses.
TOXICITY TESTING:
Current Requirement: Chronic Toxicity (Ceriodaphnia) P/F at 90%
Recommended Requirement: Chronic Toxicity (Ceriodaphnia) P/F at 90%
COMPLIANCE SUMMARY:
Non compliant:
1/96 — flow and BOD limit exceeded.
2/96 — flow and BOD limit exceeded.
3/96 — flow and BOD limit exceeded.
4/96 — flow and BOD limit exceeded
5/96 — BOD limit exceeded.
8/96 — flow limit exceeded and chronic tox failed.
Crooked CrcvI, \\ \\'TP #2 Fact Sheet
NI'I)IS Renewal
Page 1

9/96 — flow limit exceeded.
10/96 — flow limit exceeded.
Upgrade completed and flow limit expanded (11/96).
2/97 — BOD limit exceeded.
4/97 — BOD limit exceeded.
12/97 — TRC limit exceeded.
3/98 — TRC limit exceeded.
5/98 — TRC limit exceeded.
8/98 — Fecal limit exceeded.
9/98 — pH limit exceeded. (pH = 5.53)
11/98 — pH limit exceeded (pH = 5.58)
4/99 — TRC limit exceeded.
5/99 — BOD limit exceeded due to a loss of solids from the clarifier.
6/99 — BOD limit exceeded due to a problem with the clarifier.
Reviewing the instream monitoring data for 1996 the discharge is impacting the stream. There is
a slight reduction in DO between the upstream and downstream monitoring locations. With the
facilities recurring BOD problems the reduced DO and elevated fecals should be expected.
INSTREAM MONITORING:
The facility currently monitors for upstream 50 feet from the outfall, downstream at 1/a mile below
discharge, and downstream at SR 1514. The parameters monitored instream include dissolved
oxygen, fecal coliform, temperature, and conductivy. The facility is a member of the Yadkin
Pee -Dee Association, therefore all in -stream monitoring requirements have been waived.
PROPOSED CHANGES:
• The quarterly monitoring for 1,1 Dichloroethene, tetrachloroethene, and trichloroethene has been
removed as a condition for the permit. Monitoring for the volatile organic compounds listed was
originally implemented because Crooked Creek receives wastewater from a groundwater remediation
system. Though the facility continues to receive wastewater from the groundwater remediation
system, a reasonable potential analysis, for the time period 1/96 to 6/99, concluded that there was no
reasonable potential to exceed water quality standards for the above mentioned contaminants.
Therefore, the monitoring requirements for the volatile organic contaminants listed above have been
removed from the permit.
• The quarterly monitoring for lindane was removed from the permit. The lindane condition in the
permit was implemented because of the facilities pretreatment program. The two Significant Industrial
Users (SIU) that necessitated the need for a pretreatment program and thus lindane monitoring have
gone out of business and left town. Since the Crooked Creek facility is no longer has a pretreatment
program or SIUs there is no need to continue to require lindane monitoring as a condition for the
permit.
PROPOSED SCHEDULE FOR PERMIT ISSUANCE:
Draft Permit to Public Notice:
Permit Scheduled to Issue:
Crooked Creek \\'\\DTP #2 Fact. Sheet
NPDI:S Renewal
Page 2

STATE CONTACT:
If you have any questions on any of the above information or on the attached permit, please contact
MichaelMyers at [phone] ext. 508.
Crooked Creek \V\V'I'P #2 Fact Sheet
NPDES Renewal
Page 3

REGIONAL OFFICE COMMENT:
'C6+se ,Vo is ?#mac 7. W C #t,ri io•) o, fry v'7 AV 77/6. $Z1, f tore/
lDX/ e-r? Jude 2 2, / 999: w6 O/ itlo o7» e Go#,..ve v%s.
NAME. i � �./l� DATE: pe
EPA REGION IV COMMENT:
NAME: DATE:
Crooked Creek \V\VTP #`? Fact Sheet
NPI)ES Renewal
Page 4

Notes for Crooked Creek Wastewater Treatment Plant
General Information
Permit Writer: MJM
Permit #: NC0069841
Renewal of 1.9 MGD discharge of treated domestic wastewater into North Fork Crooked
Creek in the Yadkin Pee -Dee River Basin
Per 15A NCAC 2B .0301(c): Stream classification is class C.
Permit Modification Information
The original permit was issued September 25, 1995 and modified on May 3, 1996. The
May 3r modification was to the upstream monitoring location, which was moved from
500 ft above outfall 001 to 50 ft above the outfall.
Wasteload Allocation Review
The wasteload file contains four wasteload allocations for the Crooked Creek plant.
Originally, the facility discharged into the South Fork Crooked Creek. The oldest WL in
the file was conducted in 1987 for a permitted flow of 0.65MGD and 1.3 MGD. In 1992
a subsequent WL was conducted for a design capacity of 1.3 MGD into the South Fork
Crooked Creek. It appears from the WL file that an ATC was issued for 0.65 MGD and
that when the facility attempted to expand their flows in 1994 that they were denied
because South Fork Crooked Creek is a zero flow stream. In 1995 Union County decided
to move the outfall location from South Fork Crooked Creek to the North Fork Crooked
Creek and another WL allocation was conducted. Also at that time the permitted flow
was increased to 1.9 MGD (the currently permitted flow). At the time of the last WLA
the Crooked Creek WWTP was participating in the pretreatment program because of 2
SIUs. However, since that time both SIUs have discontinued to discharge to the Crooked
Creek WWTP and have an inactive status in the pretreatment program.
The 1995 WLA included monitoring requirements for copper, TCE, PCE, 1,1 DCE and
Lindane. Also included was a footnote requiring the division to examine the need for this
monitoring requirement after one year of data has been collected. This analysis has never
been conducted. It is recommended that this permit renewal examine the need for the
monitoring of these compounds.
DMR REview
Non compliant:
1/96 — flow and BOD limit exceeded.
2/96 — flow and BOD limit exceeded.
3/96 — flow and BOD limit exceeded.
4/96 — flow and BOD limit exceeded

5/96 — BOD limit exceeded.
8/96 — flow limit exceeded and chronic tox failed.
9/96 — flow limit exceeded.
10/96 — flow limit exceeded.
Upgrade completed and flow limit expanded (11/96).
2/97 — BOD limit exceeded.
4/97 — BOD limit exceeded.
12/97 — TRC limit exceeded.
3/98 — TRC limit exceeded.
5/98 — TRC limit exceeded.
8/98 — Fecal limit exceeded.
9/98 — pH limit exceeded. (pH = 5.53)
11/98 — pH limit exceeded (pH = 5.58)
4/99 — TRC limit exceeded.
5/99 — BOD limit exceeded due to a loss of solids from the clarifier.
6/99 — BOD limit exceeded due to a problem with the clarifier.
Reviewing the instream monitoring data for 1996 the discharge is impacting the stream.
There is a slight reduction in DO between the upstream and downstream monitoring
locations. With the facilities recurring BOD problems the reduced DO and elevated
fecals should be expected.
Regional Office Staff Report Review
The staff report was completed by Samar Bou-Ghazale, Mooresville Regional Office.
Mr. Bou-Ghazale recommends renewal of the NPDES permit. This is a class III facility
based on flow. Though the facility is operating a oxidation ditch unit there is no permit
limit for TN or TP therefore the facility does not increase a grade. The MTU for this
facility is 10103.
Permit Application Review
States that the percent of industrial wastewater being treated by the plant is 0%. Since
these toxicants are to be removed from the permit no need to conduct a RP.
Reasonable Potential Notes
Crooked Creek is no longer participating in the pretreatment program because they no
longer have any SIUs. Reasonable potential analysis were conducted for TCE, PCE, and
copper, 1,1-DCE and lindane. Based on the reasonable potential analysis the following
recommendations are made:
Copper RP — Reviewing the DMR data, copper has been reported in the effluent above
the action level, however the facility is not having chronic toxicity problems. Therefore,
the no limit will be applied per the yet to be approved action level policy. Since the

facility is exceeding the action level monitoring requirement for copper will remain as a
condition for the permit.
Lindane — Using DMR data from 1996 through June 1999. There are two issues with the
reasonable potential as follows:
1. There has been one detection since the permit was issued in 1995.
2. Since the detection was above the water quality standard and the IWC = 100%, the
detection constitutes reasonable potential.
The source of the lindane contamination should be investigated. If it is determined that
the source is from one of the SIUs that have left Union County then the monitoring
requirement may be removed. If the source can not be established then the lindane
monitoring should remain with a comment encouraging them to try to establish the
source of lindane contamination. If the source is still there then the monitoring
requirement should remain in the permit.
If lindane monitoring remains in the permit then the issue becomes the method.
Currently, the method used by the facility has a detection level 0.05 ug/1 with a
freshwater stream standard for lindane of 0.01 ug/1. Jim Meyer at ESB should be
contacted to determine the correct method for lindane and to provide insight into the fate
of lindane in the environment.
1,1 dichlorethene — There have been no detection of this compound in either the effluent
or the influent. Therefore, no reasonable potential exist. Remove monitoring
requirement. Additionally, this compound is a common daughter product of the
degradation of TCE and has a higher Henry's Law constant. Thus if the mole fraction of
the compound is assumed to be close to zero then Henry's Law applies and 1,1
dichloroethene will volatilize prior to the volatilization of either PCE or TCE.
TCE — There have been no detection of TCE in the influent or the effluent for the period
1/96 through 6/99. No reasonable potential. Remove monitoring requirement.
PCE - There have been no detection of PCE in the influent or the effluent for the period
1/96 through 6/99. No reasonable potential. Remove monitoring requirement.
Permit Conditions Development
Flow — The flow limit will remain at 1.9 MGD with continuous recording of the influent
or the effluent.
BOD (5-day) 20°C — According to the zero flow policy the limit should remain at 5 mg/1
monthly average with a 7.5 mg/1 weekly average. Per NCAC 15A 2b .0500 the
monitoring frequency for a class III facility treating domestic waste should be 3
times/week at the influent and the effluent.
General Comments

11/29/99 — Talk with Steve Amigon, Pretreatment, the current permit has monitoring
requirements for four toxicants including Lindane. Originally, the WWTP had a
pretreatment program with two SIUs. However, recently May 1999 the Crooked Creek
Wastewater Treatment plant's pretreatment program status changed to inactive.
Recommend verifying the source of wastewater (i.e. 100 % domestic). If the wastewater
source is 100% domestic then monitoring requirements for these parameters should be
removed from the permit.
11/30/99 - Talked with Mark Tye, Union county contact to set up a site visit for
December 2, 1999. Mr. Tye indicated that the monitoring requirement for TCE, PCE,
1,1-DCE was due to a groundwater remediation system which discharges to the WWTP.
He also is going to supply 3 years of data which shows that they have not seen any of
these compounds in the influent or the effluent to the plant. Mr. Tye was unsure as to the
reason for the monitoring requirement for Lindane. In light of this new information
reasonable potential should be conducted for the VOCs and the rationale for the lindane
monitoring examined.
12/2/99 — Meeting with Mark Tye to tour the Crooked Creek facility.
12/7/99 — According to Shamar Bou-Ghazale, Mooresville Regional Office the Lindane
monitoring requirement in the permit is associated with the SIUs that are no longer
discharging to the facility.
12/7/99 — Draft permit review by Tom Belnick.
12/8/99 — Draft permit to Christie for public notice.

Crooked Creek Long Term Monitoring Plan 1997
h -
...

oring Plan 1997
Zinc ? 1 1,1,2-Trtchloroethen
_ 0.082 .<
0.07
0.079 < 0.001
Zinc
0.11
0.12
0.13
Zinc
1.1
1.6
0.001
0.001
I<!
1 _•
1,1-Dichloroethene ; ; Undane i Tetrachloroethene
0.001 1 <i 5E-05 <l 0.001
0.001 j<i 5E-05 <
0.001
<i 5E-05 <
i 1
1,1,2-Trichloroethene f 1,1431chloroethene 1 Undane {
0.001 <i 0.001 <i 5E-05
0.001 i<1 0.001 <j 5E-05
0.001 i<j 0.001
1,1,2-Trlchloroethene -Ij 1,1-Dichloroethene
0.001 j<j 0 001
0.001
1<1
<j 5E-05
0.001
0.001
Tetrachloroethene
0.0027
0.001
0.001
Undane
<j 5E-05
0.001 [1 5E-05
Tetrachloroethene
0.001
0.001
1
0 Effluent 2!7 <
( In Effluent 5/16 <
La Effluent 8B <

Crooked Creek Long Term Monitor
1996 Arsenic Cadmium l ! Chromium I Copper Cyanide , 1 Lead . Mercury Molybdenum Nickel Selenium Zi
Effluent 1/24 < 0.005 < 0,010 ' < 0.010 !< 0,02 0.003 ' <' 0.01 < 0.002 < 0,05 < 0.05 < 0.005 0.
Effluent 4/3 < 0,005 ,<: 0.010 •< 0.010 I 0.021 0.008 • < 0.10 < 0,002 < 0.05 < 0.05 < 0.005 0.
Effluent 8l6 ' < ! 0.005 1 < i 0.010 ! <' 0.010 < 0.010 < 0,002 < 0.10 < 0.002 < 0.05 < 0.05 i < 0.005 0.
Effluent 1118 1 < 10.005 I <i 0.010 I <I 0.010 l <: 0,010 < 0.002 , < 1 0,10 <' 0.002 '< 0.05 < 0.05 +< 0.005 ! ' 0.
i Arsenic ! Cadmium I I Chromium I Copper Cyanide ' I Lead ' Mercury I Molybdenum Nickel ' Selenium i , Zi
Influent 1124 < 0.005 < 0.010 <I 0,010 < 0,02 < 0.002 <' 0.01 < 0.002 < 0.05 < 0.05 :< 0.005 < 0.
Influent4/3 <• 0.005 •< 0.010 < 0.010 0,039 < 0.002 < 0.01 <, 0.002 < 0,05 < 0.05 < 0.005 0.
Influent 8/6 , < : 0.005 I <' 0.010 < 0.010 0.031 < 0,002 < 0.10 < 0.002 < 0.05 .< 0.05 0.006 ; 0.
Influent 1118 I < 0.005 < 0,010 < 0,010 0,017 < 0.002 < 0.1 < 0.002 <, 0.05 !< 0.05 < 0.005 0.
I Arsenic Cadmium ; Chromium Copper Cyanide Lead Mercury I Molybdenum ' Nickel Selenium ' Zi
Sludge4/3 • 0.008 ' 0.010 1 0.068
0.68 0.051 , 10.22 0.0004 I 0.12 <. 0.05 0.006 , 1
Sludge 8/6 < , 0.005 < 0.010 ; 0.045
0.61 0.011 < ! 0.10 i , 0,0026 I <i 0.05 <; 0.05 < 0.005 1
Effluent LIMP
0.1
1
0.0s'
1
y i
• 0.06
J
3
c
O j
•-, 0.04 3
c.c t
0.02 3
i
f
i
3
3
yyy
_
!
N
A
E E `m m v E 7.3 E
E E a cas
'c
U o
Metals and VOC's

•
Monitoring Plan 1996
ickel ' Selenium ' ' Zinc ' 1,1,2-Trichloroethen
.05 < 0.005 0.05 < • 0.005
.05 < 0.005 0.07 < 0.001
.05 ; < 0.005 ; f 0.06 I <; 0.001
05 (< 0.005 j 0.10 ! <0.0005
;ckel Selenium j Zinc 11,1,2.Trichloroethene
.05 i< 0.005 i<; 0.05 <! 0.005
.05 < 0.005 ; ;0.12k, 0.001
.05 ! 0.006 i 10.10 ! I 0.0062
.05 < 0.005 ; 0.12 I < 0.001
.kel I Selenium' ; Zinc !1,1,2-Trichloroethene
05 i 0.008 ' i 1.0 ; <: 0.001 <
05 < 0.005 1 1.4 ! < ! 0.001 ! <
e :1,1-Dichloroethene Lindane Tetrachloroethen
< 0.005 < 5E-05 <' 0.005
< 0.001 < 5E-05 <, 0.001
< 0.001 <! 5E-05 < <; 0.001
< 0.001 <i 5E-05 !<; 0.001
?1,1d)ichloroethene ' Lindanei Tetrachloroethen
< 0.005 <1 5E-05 ! < 0.005
f < 0.001 <; 5E-05 ; <, . 0.001
<' 0.001 <i 5E-05 0.0067
<; 0.001 <! 5E-05 i ; 0.096
1,1-Dichloroethene Lindane Tetrachloroethen:
0.001 <; 6E-05 <; 0.001
0.001 <; 5E-05 : < 0.001
E
u
5 c
ettl
s co. p
d
L O
U
V
0 Effluent 1 /24 <
Effluent 4/3 <
0 Effluent 8/6 <
0 Effluent 11/8 <
•

Crooked Creek WWTP
Permitted Flow = 1.9 MGD
Residual Chlorine
7Q10 (CFS)
DESIGN FLOW (MGD)
DESIGN FLOW (CFS)
STREAM STD (UG/L)
UPS BACKGROUND LEVEL (I
IWC (%)
Allowable Concentration (ug)
Fecal Limit
Ratio of 0.0 :1
0
1.9
2.945
17.0
0
100.00
17.00
Ammonia as NH3
(summer)
7Q10 (CFS)
DESIGN FLOW (MGD)
DESIGN FLOW (CFS)
STREAM STD (MG/L)
UPS BACKGROUND LEVEL
IWC (%)
Allowable Concentration (m
Ammonia as NH3
(winter)
7Q10 (CFS)
200/100m1 DESIGN FLOW (MGD)
DESIGN FLOW (CFS)
STREAM STD (MG/L)
UPS BACKGROUND LEVEL
IWC (%)
Allowable Concentration (m
0
1.9
2.945
1.0
0.22
100.00
1.00
0.08
1.9
2.945
1.8
0.22
97.36
1.84
11/30/99
MJM
NC0069841

Facility Name =
NPDES#=
Qw (MGD) =
7Q10s (cfs)=
1WC (%) =
Lindane Discharge Monitoring Report
Data Summary Spreadsheet for
Crooked Creek WWTP
Crooked Creek WWTP
NC0069841
1.9
0
100.00
FINAL RESULTS
Lindane
Max. Pred Cw
Allowable Cw
4.9
0.0
Parameter =
Standard =
Lindane
0.01
n BDL=1/2DL Actual Data RESULTS
1 0.025 <0.05 Std Dev.
2 0.025 <0.05 Mean
3 0.025 <0.05 C.V.
4 0.025 <0.05
5 0.025 <0.05
6 0.5 <1.0 Mult Factor =
7 0.025 <0.05 Max. Value
8 0.025 <0.05 Max. Pred Cw
9 0.025 <0.05 Allowable Cw
10 0.025 <0.05
11 0.025 <0.05
12 0.062 0.062
13 0.025 <0.05
0.13
0.06
2.04
9.8
0.50 ug/1
4.90 ug/1
0.01 pg/1
MJM NC0069841 11/30/99

Facility Name =
NPDES # =
Qw (MGD) =
7Q10s (cfs)=
IWC (%) =
1,1 Dichloroethene Discharge Monitoring Report
Data Summary Spreadsheet for
Crooked Creek WWTP
Crooked Creek WWTP
NC0069841
1.9
0
100.00
FINAL RESULTS
1,1 dichloroethene
Max. Pred Cw
Allowable Cw
4.9
0.0
Parameter =
Standard =
1,1 dichloroethene
ug/1
n BDL=]J2DL Actual Data RESULTS
1 0.025 <1.0 Std Dev. 0.14
2 0.025 <1.0 Mean 0.06
3 0.025 <1.0 C.V. 2.12
4 0.025 <0.05
5 0.025 <1.0
6 0.5 <1.0 Mult Factor =
7 0.025 <1.0 Max. Value 0.50 pg/1
8 0.025 <1.0 Max. Pred Cw 4.90 pg/1
9 0.025 <1.0 Allowable Cw 0.00 pg/1
9.8
10 0.025 <1.0
11 0.025 <5
12 <1.0 <1.0
13 0.025 <1.0
MJM NC0069841 11/30/99

Facility Name =
NPDES # =
Qw (MGD) =
7Q1Ds (cfs)=
IWC (%) =
TCE Discharge Monitoring Report
Data Summary Spreadsheet for
Crooked Creek WWTP
Crooked Creek WWTP
NC0069841
1.9
0
100.00
FINAL RESULTS
TCE
Max. Pred Cw
Allowable Cw
0
92.4
Parameter =
Standard =
TCE
92.40
310
n BDL=1/2DL Actual Data RESULTS
1 0.500 <1.0 Std Dev. 0.54
2 0.500 <1.0 Mean 0.63
3 0.500 <1.0 C.V. 0.87
4 0.500 <1.0
5 0.500 <1.0
6 0.500 <1.0 Mult Factor
7 0.500 <1.0 Max. Value s
8 0.500 <1.0 Max. Pred Cw 0.00 g/1 l
9 0.500 <1.0 Allowable Cw # #4 `kig/1 c
10 0.500 <1.0
11 2.500 <5
12 0.500 <1.0
13 0.500 <1.0
14 0.3 <0.5
MJM NC0069841 11/30/99

Facility Name =
NPDES # =
Qw (MGD) =
7Q10s (cfs)=
'WC (%) =
PCE Discharge Monitoring Report
Data Summary Spreadsheet for
Crooked Creek WWTP
Crooked Creek WWTP
NC0069841
1.9
0
100.00
FINAL RESULTS
PCE
Max. Pred Cw
Allowable Cw
0
0.8
Parameter =
Standard =
PCE
0.80
nil
n BDL=1J2DL kctual Data RESULTS
1 0.500 <1.0 Std Dev. 0.54
2 0.500 <1.0 Mean 0.63
3 0.500 <1.0 C.V. 0.87
4 0.500 <1.0
5 0.500 <1.0
6 0.500 <1.0 Mult Factor
7 0.500 <1.0 Max. Value (0 pg/1
8 0.500 <1.0 Max. Pred Cw 0.00 g/1
9 0.500 <1.0 Allowable Cw 0. pg/1
10 0.500 <1.0
11 2.500 <5
12 0.500 <1.0
13 0.500 <1.0
14 0.3 <1.0
MJM NC0069841 1 1 /30/99

Facility Name =
NPDES # =
Qw (MGD) =
7Q1Os (cfs)=
IWC (%) =
Copper Discharge Monitoring Report
Data Summary Spreadsheet for
Crooked Creek WWTP
Crooked Creek WWTP
NC0069841
1.9
0
100.00
FINAL RESULTS
Copper
Max. Pred Cw
Allowable Cw
0
7.0
Parameter =
Standard =
Copper
7.0
141
n BDL=1/2DLActual Data RESULTS
1 14.0 14 Std Dev. 30.3
2 7.0 7 Mean 17.4
3 5.7 6 C.V. 1.74
4 12.0 12
5 2.6 3
6 16.0 16 Mult Factor
7 7.1 7 Max. Value
8 8.4 8 Max. Pred Cw
9 6.5 7 Allowable Cw
10 7.6 8
11 130.0 130
12 15.0 15
13 12.0 12
14 14.0 14
15 10.0 10
16 11.0 11
MJM NC0069841 1 1 /30/99

UNION COUNTY PUBLIC WORKS DEPARTMENT
Mike Shalati, Director
April 23, 1999
Mr. Charles Weaver
NC DENR / DWQ / NPDES
Post Office Box 29535
Raleigh, North Carolina 27626-0535
Subject: Renewal Request for NPDES Permit No. NC0069841
Dear Mr. Weaver:
Please find enclosed a complete permit renewal package for Union County Public Works'
Crooked Creek WWTP #2.
On April 25, 1995 an Authorization to Construct was issued from the State to Union
County Public Works Department for the expansion of Crooked Creek WWTP #2. The
construction is complete and consisted of the following:
• The addition of two (2) raw influent pumps for a total of six (6).
• The addition of a mechanical bar -screen.
• The extension of the existing oxidation ditches.
• The addition of two (2) oxidation ditch aerators for a total of six (6).
• The addition of two (2) secondary clarifiers for a total of four (4).
▪ The addition of four (4) high rate tertiary sand filters for a total of six (6).
• The addition of two (2) parallel chlorine contact chambers for a total of three (3).
• The addition of three (3) digesters and one (1) aerated residuals holding tank.
• The construction of an effluent pump station.
The facility is currently rated for 1.9 MGD, with the effluent being pumped
approximately three (3) miles to the North Fork Crooked Creek.
As per your conversation with Mr. Mark Tye of this Department, the application package
received by the Department of Public Works did not contain Section II (15) "additional
wastewater characteristics". Therefore, a spreadsheet following the "description of
influent and effluent" format has been included for monitored effluent pollutants (please
see Addendum 1).
Should you require addition information, please do not hesitate to contact Mr. Mark Tye
at [phone].
Respectfully,
Charles P. O'Cain
Interim Public Works Director
P.O. Box 987 . Monroe, North Carolina 2811 1-0987 . Phone: [phone] . Fax: [phone]

UNION COUNTY PUBLIC WORKS DEPARTMENT
Mike Shalati, Director
RESIDUALS MANAGEMENT PLAN
Crooked Creek WWTP
NPDES Permit No. NC0069841
Union County, North Carolina
All residuals generated at the Crooked Creek facility shall be aerobically digested prior to
land application. Digestion will be considered complete when the following crteria are
met:
1. The geometric mean of Fecal Coliform shall be less than or equal to 2,000,000 per
gram of total dry solids.
2. Vector Attraction Reduction (VAR) will be met through one of the following options:
a) volatile solids reduction of 38% or greater, b) biosolids injection or incorporation
or c) biosolids alkaline stabilization.
The residuals shall be disposed of in accordance with Residuals Land Application Permit
No. WQ0007486.
P.O. Box 987 . Monroe, North Carolina 28111-0987 . Phone: [phone] . Fax: [phone]

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SCREENING
SCREENINGS
TO LANpFILL
DISTRIBUTION
BOX
LOW -SPEED
ROTOR AERATORS
OXIDATION
DITCHES
GRAVITY THICKENER
/AEROBIC DIGESTER
DECANT LIQUID
TO INFLUENT P.S.
EFFLUENT
P.S.
EFFLUENT TO NORTH
FORK CROOKED CREEK
(-0
CASCADE
AERATOR
SECONDARY
CLARIFIERS
SLUDGE HOLDING
LAND APPLICATION
DECANT LIQUID
TO INFLUENT P.S.
BACKWAS H
TO NFL. P.S.
CHLORINE
CONTACT
TERTIARY
FILTER
UNION COUH'TY
CROOKED CREEK
201 FACILMES PLAN
PROCESS FLOW
SCHEMATIC
NORTH CryR L INA
FIGURE ! -::