NC0023973_Fact Sheet_20220920

Fact Sheet
NPDES Permit No. NCO023973
Permit Writer/Email Contact: Gary Perlmutter, [e-mail]
Date: September 20, 2022
Division/Branch: NC Division of Water Resources / NPDES Municipal Permitting Unit
Fact Sheet Template: Version 09Jan2017
Permitting Action:
® Renewal
❑ Renewal with Expansion
❑ New Discharge
❑ Modification (Fact Sheet should be tailored to mod request)
Note: A complete application should include the following:
• For New Dischargers, EPA Form 2A or 2D requirements, Engineering Alternatives Analysis, Fee
• For Existing Dischargers (POTW), EPA Form 2A, 3 effluent pollutant scans, 4 2nd species WET
tests.
• For Existing Dischargers (Non-POTW), EPA Form 2C with correct analytical requirements based
on industry category.
Complete applicable sections below. If not applicable, enter NA.
1. Basic Facility Information:
Facility Information
Applicant/Facility Name:
Cape Fear Public Utility Authority (CFPUA) / M'Kean Maffitt
(Southside) WWTP
Applicant Address:
235 Government Center Drive, Wilmington, NC 28403
Facility Address:
3436 River Road, Wilmington, NC 28412
Permitted Flow:
12.0 MGD / 16.0 MGD / 20.0 MGD / 24.0 MGD
Facility Type/Waste:
MAJOR Municipal; 97.1 % domestic, 2.9% industrial'
Facility Class:
Grade IV
Treatment Units:
Bar Screens, Grit Removal, Primary Clarifiers, Trickling Filters,
Aeration Basins, Secondary Clarifiers, UV Disinfection, Solids
Handling for Offsite Disposal
Pretreatment Program (Y/N)
Yes
County:
New Hanover
Region
Wilmington
Footnote.
1. Permitted industrial flow = 0.35 MGD.
Briefly describe the proposed permitting action and facility background: The Cape Fear Public Utility
Authority (CFPUA) had applied for an NPDES permit renewal for its M'Kean Maffitt (Southside) WWTP,
received by DWR on May 12, 2022. Review of the application found it lacking PPAs and 2nd species
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toxicity test results; these were received by request on 6/2/2022. PPAs were sampled in March 2019,
December 2020 and June 2021; 2nd species WET tests were sampled in December 2018, March 2019, March
2020 and March 2021.
This facility serves the City of Wilmington (pop. —43,488) and New Hanover County (pop. —22,948) for a
total population of —66,436. Southside WWTP treats domestic and industrial wastewater with an active
pretreatment program involving one Significant Industrial User (SIU): New Hanover Regional Medical
Center, which is not a Categorical Industrial User (CIU). Biosolids management includes gravity belt
thickening, anaerobic digestion, and belt filter press dewatering; dewatered solids are then hauled offsite to
a municipal landfill for disposal.
The current permit has three expansion flow tiers: 16.0, 20.0 and 24.0 MGD with a summary of the
scheduled upgrade/expansion in the permit application; construction is scheduled to begin in Fiscal Year
2025. Included in the application cover letter is a summary of activities taken toward lowering effluent
Total Copper concentrations under the current permit compliance schedule, and options to further its
migitation, including the possibility of relocating the outfall and installing a diffuser. The permit was
modified in March 2022 to extend the Total Copper compliance date from March 1, 2022 to November 29,
2022. The renewal application includes a request to extend the Total Copper compliance date into the next
permit cycle to allow further time to evaluate, select and implement treatment options, which may include
installing an outfall diffuser in conjunction with plant expansion.
2. Receiving Waterbody Information
Receiving Waterbody Information
Outfalls/Receiving Stream(s):
Outfa11001 / Cape Fear River
(Lower Cape Fear River Estuary)
Stream Segment:
18-(71)
Stream Classification:
SC-PNA
Drainage Area (mi2):
NA
Summer 7Q10 (cfs)
Tidal
Winter 7Q10 (cfs):
Tidal
30Q2 (cfs):
Tidal
Average Flow (cfs):
Tidal
IWC (% effluent):
3.8% at 12 MGD, 4.5% at 16 MGD, 5.1% at 20 MGD,
5.7% at 24 MGD (from 2018 model)
NC 2022 303(d) listed/parameter:
Copper, Dissolved Oxygen
Subject to TMDL/parameter:
State-wide Mercury TMDL
Basin/HUC:
Cape Fear / 03030005
USGS Topo Quad:
K27NW / Wilmington, NC
The WWTP is currently authorized to discharge into Cape Fear River, classified as SC-PNA. The class
denotes use as Aquatic Life, Secondary Contact Recreation, Tidal Salt Water, and Primary Nursery Area
(PNA), a type of High Quality Water (HQW). The receiving water was listed as impaired for copper as part
of a Legacy Category 5 Total Metals Assessment in 2008 and remains in the current 2022 Final 303 (d)
listed copper. To address the impairment and resulting copper limits in the current permit, a model was run
in 2018 in an effort to calculate site -specific copper limits; results of the model yielded updated IWC values.
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3. Effluent Data Summary
Effluent data for Outfall 001 are summarized in Table 1 for the period from April 2018-March 2022.
Table 1. Effluent Data Summary Outfall 001.
Parameter
Units
Average
Max
Min
Permit Limit 1
Flow 2
MGD
7.60
23.02
4.93
MA = 12.0
CBOD5
mg/L
7.9
30.0
3.0
MA = 25.0
WA = 40.0
CBOD removal
%
95.9
98.6
81.6
> 85
TSS
mg/L
6.6
49.3
< 2.5
MA = 30.0
WA = 45.0
TSS removal
%
96.7
71.1
99.4
> 85
NH3-N
mg/L
27.4
41.2
3.7
Enterococci
(geometric mean)
#/100 mL
9
> 1330
1
MA = 35
WA = 276
Total Residual Chlorine
(TRC)
µgo
14
50
< 10
DM - 13 3
Temperature
°C
28
13
pH
S.U.
8.0
6.9
6.8-8.5
Dissolved Oxygen (DO)
mg/L
7.0
8.4
2.6
Total Nitrogen (TN)
mg/L
34.1
44.7
20.8
Total Phosphorus (TP)
mg/L
3.7
4.8
1.5
Total Copper
µg/L
5.89
10.60
1.80
MA = 3.74
DM = 5.8
Total Silver
µg/L
All data were nondetects
(all at < 0.1 µg/L but 1 at < 1 µg/L and
1 at < 2.1 µg/L)
Footnotes.
1. MA = Monthly Average, WA = Weekly Average, DM = Daily Maximum.
2. Average for CY2021 = 7.633 MGD, 63.6% of design flow.
3. Compliance value = 50 ug/L.
4. Limits not yet in effect due to compliance schedule.
4. Instream Data Summary
Instream monitoring may be required in certain situations, for example: 1) to verify model predictions when
model results for instream DO are within 1 mg/L of instream standard at full permitted flow; 2) to verify
model predictions for outfall diffuser; 3) to provide data for future TMDL; 4) based on other instream
concerns. Instream monitoring may be conducted by the Permittee, and there are also Monitoring Coalitions
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established in several basins that conduct instream sampling for the Permittee (in which case instream
monitoring is waived in the permit as long as coalition membership is maintained).
Is this facility a member of a Monitoring Coalition with waived instream monitoring (Y/N): Yes.
Name of Monitoring Coalition: Lower Cape Fear River Program (LCFRP).
If applicable, summarize any instream data and what instream monitoring will be proposed for this permit
action: The current permit has instream monitoring requirements for Dissolved Oxygen and Temperature
with frequencies at weekly from October through May and 3/week from June through September. The
upstream sampling location is Cape Fear River at a point between the radio tower north of the WWTP and
the northern end of the dredge soil island immediately east of the outfall. The downstream location is at a
point equidistant between the mouth of Barnards Creek and the southern end of the dredge spoil island
immediately east of the outfall.
Instream data from May 2018—December 2021 were obtained from DWR's monitoring coalition database
for LCFRP stations B9800000 (upstream at Cape Fear River at Channel Marker 61) and B9795000
(downstream at Channel Marker 54) for review. These data were checked for statistically significant
differences by Student's t-test and compared against concurrent effluent data as well as applicable state
water quality standards (WQS). Statistical significance level (p-value) was set at 0.05. Instream data review
findings for each parameter are summarized in Table 2 below.
Table 2. Instream and concurrent effluent monitoring summary statistics.
Parameter
Upstream
Downstream
Effluent
Standard
Dissolved Oxygen
(DO), mg/L
Average = 6.0
Range: 3.1-10.7
Average = 6.5
Range: 3.8-10.6
Average = 6.9
Range: 5.4-8.1
DA = 5.0
Instant = 4.0
Temperature, °C
Average = 22.3
Range: 6.5-31.1
Average = 22.3
Range: 6.9-31.2
Average = 23.4
Range: 15.0-28.0
DM — 32.0
Conductivity
(umhos/cm)
Average = 8,836
Range: 68-32,360
Average = 12,309
Range: 105-34,663
NA
Enterococci,
cfu/100 mL
Geomean = 21
Range: 1-274
Geomean = 19
Range: 1-313
Geomean = 11
Range: 1-1,270
MA = 35
WA = 276
Dissolved Oxygen (DO) — DO remains in the permit as a parameter of concern for aquatic life. The receiving
stream segment is impaired for DO due to concentrations below the water quality standard. Reviewed
instream data show summer minima below the standard. Instream average DO did not test significantly
different between sites, but the concurrent average effluent DO is higher than both instream DO averages,
with summer minima above the standard.
Temperature — Temperature remains in the permit as a parameter of concern for aquatic life. The receiving
stream is meeting criteria for temperature in the 2020 Integrated Report. Reviewed instream temperature
data showed seasonal patterns of summer highs and winter lows at both locations. Summer temperature
maxima at both stations were below the WQS of 32°C for lower piedmont and coastal plain waters (15A
NCAC 02B .0211). No statistical differences were found between upstream and downstream average
temperatures. Review of paired up- to downstream temperatures found no exceedances of the 2.8°C
increase standard (15A NCAC 02B .0211). Concurrent effluent temperatures were consistently higher in
winter months.
Conductivity — Conductivity is not in the permit, but is a parameter of concern due to industrial discharges.
Southside WWTP treats industrial waste via a pretreatment program involving one SIU: a hospital. Average
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downstream conductivity was found to be statistically significantly higher than upstream average
conductivity. Effluent conductivity is also not in the current permit. Based on the facility's receiving
industrial wastewater and the instream results, effluent and instream conductivity were added to the permit
in accordance with 15A NCAC 02B .0508.
Enterococci — Enterococci is a parameter of concern for aquatic life and human health, but is not in the
permit since the receiving water is neither a Class B nor impaired for this parameter. Instream Enterococci
data collected by LCFRP are available for review. The downstream geomean was slightly lower than the
upstream, and the effluent geomean was lower than either instream geomean. Enterococci monitoring is
not required and was not added to the permit.
Additional Instream Parameters — The LCFRP also monitored the instream stations for Ammonia -Nitrogen
(NH3-N), Inorganic Nitrogen (NO2+NO3), Total Kjeldahl Nitrogen (TKN), pH, Phosphorus, and Total
Suspended Solids at both stations plus Chlorophyll -a and Turbidity in the upstream station only. Since the
permit has effluent requirements for the parameters monitored in both stations, instream data were reviewed
for potential impact. A cursorary review of upstream Chlorophyll -a and Turbidity found no data exceeding
stream standards (max. Chl-a = 23 ug/L < 40 µg/L standard; max. Turbidity = 30.3 NTU < 50 NTU
standard). Among these instream parameters, NO2+NO3 (lower downstream) pH (lower downstream) and
TSS (higher downstream, but effluent was lower) showed a statistical difference between stations (Table
3).
Table 3. Instream and concurrent effluent monitoring summary statistics — additional parameters.
* = statistically different between instream stations.
Parameter
Upstream
Downstream
Effluent
Standard
NH3-N (mg/L)
Average = 0.07
Range: 0.02-0.40
Average = 0.08
Range: 0.02-0.75
Average = 27.6
Range: 14.5-38.8
NO2+NO3 (mg/L)
Average = 0.39
Range: 0.02-0.80
Average = 0.24*
Range: 0.02-0.62
Average = 2.79
Range: 0.04-7.69
TKN (mg/L)
Average = 0.78
Range: 0.10-1.60
Average = 0.78
Range: 0.10-2.00
Average = 30.5
Range: 16.2-40.3
pH (SU)
Average = 6.9
Range: 5.9-7.7
Average = 7.2*
Range: 6.1-8.0
Average = 7.4
Range: 7.2-7.6
6.8 — 8.5
Phosphorus
(mg/L)
Average = 0.24
Range: 0.06-2.21
Average = 0.22
Range: 0.04-1.18
Average = 3.56
Range: 1.50-4.75
Total Suspended
Solids (mg/L)
Average = 11.1
Range: 4.4-35.4
Average = 14.0*
Range: 6.2-52.2
Average = 6.2
Range: 2.5-17.2
5. Compliance Summary
Summarize the compliance record with permit effluent limits (past 5 years): From June 2017 through May
2022, no limit violations were reported (several TRC exceedances were reported, but no action was taken
as they were all considered compliant).
Summarize the compliance record with aquatic toxicity test limits and any second species test results (past
5 years): The facility passed 17 of 18 quarterly chronic toxicity tests from March 2018 through March
2022 as well as all four 2nd species WET tests, sampled in December 2018, March 2019, March 2020, and
March 2021.
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Summarize the results from the most recent compliance inspection: The most recent facility compliance
inspection, conducted on 06/14/2022, reported no compliance issues. A bioassay compliance inspection
was conducted on 06/16/2020 involving collection of effluent samples for a Ceriodaphnia chronic pass/fail
test by the Division. The toxicity test passed.
6. Water Quality -Based Effluent Limitations (WQBELs)
Dilution and Mixing Zones
In accordance with 15A NCAC 2B.0206, the following streamflows are used for dilution considerations
for development of WQBELs: 1 Q 10 streamflow (acute Aquatic Life); 7Q10 streamflow (chronic Aquatic
Life; non -carcinogen HH); 30Q2 streamflow (aesthetics); annual average flow (carcinogen, HH).
If applicable, describe any other dilution factors considered (e.g., based on CORMIX model results): The
2015 permit modification included a dilution factor of 33:1 from the 2001 Environmental Fluid Dynamics
Cody (EFDC) model; the resulting IWC values were placed in the 2015 permit and carried over into the
current permit at all flow tiers. A dilution study (CORMIX model or equivalent) requirement to verify the
IWC values was placed in the 2015 modified permit, to be performed within one year after expansion to
16.0 MGD. In the 2018 permit renewal (i.e., current permit), the modeling requirement was revised to
include submission of a dilution study plan with the option that the dilution study may be conducted at 12.0
MGD.
CPFUA had submitted a dilution study plan, reviewed and approved by the Division on 7/16/2018. The
dilution study was since conducted with both a EFDC model and a Jet -Plume EFDC model, calibrated and
validated with data from 1992-2017, and the final report was prepared in February 2019. Dilution factors
from the 2018 model were slightly more stringent than those from the 2001 model (Table 4). The IWC-
derived WET limits in the permit were replaced with those calculated from the 2018 model.
Table 4. Comparison of 2001 and 2018 model results.
2001 EFDC Model
2018 JP-EFDC Model
Flow
Dilution Fator
IWC (%)
Dilution Factor
IWC (%)
12.0 MGD
33.1
3.0
26.2
3.8
16.0 MGD
4.0
22.1
4.5
20.0 MGD
5.0
19.5
5.1
24.0 MGD
6.0
17.6
5.7
The dilution study was performed as part of efforts to comply with the current copper limits, as reported in
its 2020 Compliance Schedule annual report, received on 3/3/2020, and renewal application cover letter.
Results of the dilution study were < 2:1 mixing ratio due to a nearfield mixing of a side stream discharge
into the Cape Fear River. The resulting dilution factors were applied to the RPA, yielding higher Allowable
Concentrations for most parameters (see RPA section below). The modeling requirement special condition
has been removed from the permit.
If applicable, describe any mixing zones established in accordance with 15A NCAC 2B.0204(b): In the
2019 Dilution Study report, a mixing zone of 548 feet from the outfall, representing 1/3 the channel width
of the Cape Fear River east of a dredge spoil island, was established following EPA guidelines that
recommend that mixing zone definition not exceed 1/3 the width of the receiving water.
Oxygen -Consuming Waste Limitations
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Limitations for oxygen -consuming waste (e.g., BOD) are generally based on water quality modeling to
ensure protection of the instream dissolved oxygen (DO) water quality standard. Secondary TBEL limits
(e.g., BOD = 30 mg/L for Municipals) may be appropriate if deemed more stringent based on dilution and
model results.
If permit limits are more stringent than TBELs, describe how limits were developed: CBOD limits were
set based on a wasteload allocation (WLA) conducted in 1996. BOD limits for expansion phases (to 16, 20
and 24 MGD) were set to 5 mg/L summer/10 mg/L winter in the 2015 permit modification, based on BAT
for the receiving water, which is impaired for DO, as recommended by the in Chapter 30 of the 2005 Cape
Fear River Basinwide Water Quality Plan. The receiving stream is also designated a Primary Nursery Area
(PNA), in which BOD limitations for new and expanded discharges of this High Quality Water (HQW)
shall be 5 mg/L per 15A NCAC 02B .0224. No changes are proposed.
Ammonia and Total Residual Chlorine Limitations
Limitations for ammonia are based on protection of aquatic life utilizing an ammonia chronic criterion of
1.0 mg/L (summer) and 1.8 mg/L (winter). Acute ammonia limits are derived from chronic criteria, utilizing
a multiplication factor of 3 for Municipals and a multiplication factor of 5 for Non -Municipals.
Limitations for Total Residual Chlorine (TRC) are based on the NC water quality standard for protection
of aquatic life (17 mg/L) and capped at 28 µg/L (acute impacts). Due to analytical issues, all TRC values
reported below 50 µg/L are considered compliant with their permit limit.
Describe any proposed changes to ammonia and/or TRC limits for this permit renewal: The current permit
has a monitoring only requirement for Ammonia at 12.0 MGD with limits of 1.0/3.0 mg/L monthly/weekly
average in summer and 2.0/6.0 mg/L monthly/weekly average in winter at all expansion flow tiers. The
expansion flow ammonia limits are based on protection against oxygen -consuming waste per the Cape Fear
Rive Basin Plan. Wasteload Allocation (WLA) calculations for TRC and NH3-N cannot be run because the
receiving water experiences tidal flow Ammonia-N limits for saltwater protection can be determined from
using EPA guidances. Ambient Monitoring data (Temperature, pH and Salinity spanning from April 2018
— March 2020) from Station B9820000, located at Channel Marker 56, downstream of the facility's
discharge, were entered to the Department of Oregon's Saltwater Ammonia Calculator developed from the
EPA's 1989 document. The calculator yielded Mean Total NH3-N Acute and Chronic Criteria of 141.83
and 21.30 mg/L prior to dilution. The modified permit issued in 2015 includes an IWC of 3% at 12 MGD
based on a 33:1 dilution ratio; the Ammonia allowable concentrations under dilution are 4680 mg/L (acute)
and 702 mg/L (chronic). Per the 2016 DWR Ammonia permitting guidance, allowable concentrations > 35
mg/L do not require a permit limit. Further, the calculated allowable concentrations are also less stringent
than the current limits for the expansion flow tiers, thus the current limits are maintained. No changes were
made to the permit regarding Ammonia.
The current TRC limit was set at 13.0 µg/L per the EPA NRWQC for saltwater aquatic life protection, to
be applied when chlorination is used. CFPUA has replaced chlorination to UV disinfection beginning May
14, 2020, the date of the Engineer Certification submittal for construction completion. No changes were
made regarding TRC.
Reasonable Potential Analysis (RPA) for Toxicants
If applicable, conduct RPA analysis and complete information below.
The need for toxicant limits is based upon a demonstration of reasonable potential to exceed water quality
standards, a statistical evaluation that is conducted during every permit renewal utilizing the most recent
effluent data for each outfall. The RPA is conducted in accordance with 40 CFR 122.44 (d) (i). The NC
' Ambient Water Quality Criteria for Ammonia (Saltwater) - 1989, EPA 440/5-88-004 April 1989.
Page 7 of 17

RPA procedure utilizes the following: 1) 95% Confidence Level/95% Probability; 2) assumption of zero
background; 3) use of 1/2 detection limit for "less than" values; and 4) streamflows used for dilution
consideration based on 15A NCAC 2B.0206. Effective April 6, 2016, NC began implementation of
dissolved metals criteria in the RPA process in accordance with guidance titled NPDES Implementation of
Instream Dissolved Metals Standards, dated June 10, 2016.
The current permit reflects results of RPAs that were run in 2017. The RPAs were run without the 50%
buffer for HQW at the 12.0 MGD but with the buffer for all expansion flow tiers. The HQW buffer was not
applied to the 12.0 MGD because it was the existing permitted flow when it was discovered that the
discharge was located in a PNA, which is considered a HQW. The same RPA approach is applied for this
permit renewal, but with modeled dilution factors from the 2018 JP-EFDC model (see Dilution and Mixing
Zones section above).
A reasonable potential analysis was conducted on effluent toxicant data collected between May 2018 and
April 2022. Pollutants of concern included toxicants with positive detections and associated water quality
standards/criteria. Based on this analysis, the following permitting actions are proposed for this permit:
• Effluent Limit with Monitoring. The following parameters will receive a water quality -based
effluent limit (WQBEL) since they demonstrated a reasonable potential to exceed applicable water
quality standards/criteria: None at any flow tier.
• Monitoring Only. The following parameters will receive a monitor -only requirement since they
did not demonstrate reasonable potential to exceed applicable water quality standards/criteria, but
the maximum predicted concentration was > 50% of the allowable concentration: None at any
flow tier.
• No Limit or Monitoring: The following parameters will not receive a limit or monitoring, since
they did not demonstrate reasonable potential to exceed applicable water quality standards/criteria
and the maximum predicted concentration was < 50% of the allowable concentration: All analyzed
parameters at all flow tiers.
• POTW Effluent Pollutant Scan Review: Three effluent pollutant scans were evaluated for
additional pollutants of concern. Three PPAs, sampled in March 2019, September 2020, and June
2021, were reviewed.
o The following parameter(s) will receive a water quality -based effluent limit (WQBEL)
with monitoring, since as part of a limited data set, two samples exceeded the allowable
discharge concentration: None at any flow tier.
o The following parameter(s) will receive a monitor -only requirement, since as part of a
limited data set, one sample exceeded the allowable discharge concentration, or the
maximum predicted concentration was > 50% of the allowable concentration: Bis(2-
ethylhexyl) phthalate at all expansion flow tiers (16.0, 20.0, 24.0 MGD), based on one
detectable level above the Allowable Cw.
o The following parameters will not receive a limit or monitoring, since they did not
demonstrate reasonable potential to exceed applicable water quality standards/criteria and
the maximum predicted concentration was < 50% of the allowable concentration: Bis(2-
ethylhexyl) phthalate at 12.0 MGD; Chloroform and Toluene at all flow tiers; all other
parameters were non -detects.
A copy of the Dissolved Metals Implementation Fact Sheet for freshwater/saltwater is included in this Fact
Sheet. It includes a printout of the RPA Dissolved to Total Metal Calculator sheet.
Toxicity Testing Limitations
Permit limits and monitoring requirements for Whole Effluent Toxicity (WET) have been established in
accordance with Division guidance (per WET Memo, 8/2/1999). Per WET guidance, all NPDES permits
issued to Major facilities or any facility discharging "complex" wastewater (contains anything other than
domestic waste) will contain appropriate WET limits and monitoring requirements, with several exceptions.
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The State has received prior EPA approval to use an Alternative WET Test Procedure in NPDES permits,
using single concentration screening tests, with multiple dilution follow-up upon a test failure.
Describe proposed toxicity test requirement: Southside WWTP is a Major POTW that discharges treated
domestic and industrial wastewater with chronic Ceriodaphnia dubia WET limits at 3.0% effluent at 12.0
MGD, 4.0% at 16.0 MGD, 5.0% at 20.0 MGD, and 6.0% at 24.0 MGD, all to be sampled quarterly per the
2015 permit modification. (Ceriodaphnia dubia was introduced as the test organism in the 2004 permit
modification at the Permittee's request to change it from Daphnia duplex with no objection from the
Division. The C. dubia WET test has been maintained in the permit since that change.). A dilution study
was conducted in 2018, which yielded updated dilution factors and IWCs for all flow tiers (see Dilution
and Mixing Zones section above). The permit WET limits were revised based on the model IWCs (see
Table 4 above).
Mercury Statewide TMDL Evaluation
There is a statewide TMDL for mercury approved by EPA in 2012. The TMDL target was to comply with
EPA's mercury fish tissue criteria (0.3 mg/kg) for human health protection. The TMDL established a
wasteload allocation for point sources of 37 kg/year (81 lb/year), and is applicable to municipals and
industrial facilities with known mercury discharges. Given the small contribution of mercury from point
sources (-2% of total load), the TMDL emphasizes mercury minimization plans (MMPs) for point source
control. Municipal facilities > 2 MGD and discharging quantifiable levels of mercury (> 1 ng/L) will receive
an MMP requirement. Industrials are evaluated on a case -by -case basis, depending if mercury is a pollutant
of concern. Effluent limits may also be added if annual average effluent concentrations exceed the WQBEL
value (based on the NC WQS of 12 ng/L) and/or if any individual value exceeds a TBEL value of 47 ng/L.
Describe proposed permit actions based on mercury evaluation: The current permit has an MMP
requirement. A summary report of activities was not included with the permit renewal application but was
received upon request on 6/22/2022. Submitted low level mercury data from April 2018 through March
2022 were reviewed for TMDL evaluation. No individual results exceeded the TBEL of 47 ng/L and no
annual average exceeded the WQBEL of 12.5 ng/L (Table 5). Because mercury was detected in the effluent
(> 1 ng/L) and the design flow is > 2 MGD, an MMP is required and the MMP permit special condition
will be reworded toward its maintenance in the permit.
Table 5. Mercury Effluent Data Summary.
Parameter
2018
2019
2020
2021
'""
No. of Samples
3
5
4
1
1
Annual Average Conc. ng/L
2.3
2.7
2.8
2.1
3.9
Maximum Conc., ng/L
2.86
4.69
4.32
2.94
3.91
TBEL, ng/L
47
WQBEL, ng/L
12.5 at all flows
Other TMDL/Nutrient Management Strategy Considerations
If applicable, describe any other TMDLs/Nutrient Management Strategies and their implementation within
this permit: There is no Nutrient Management Strategy for the Lower Cape Fear River Sub -basin. Total
Nitrogen and Total Phosphorus are monitored monthly per facility size (> 1 MGD) and river sub -basin
(Cape Fear) as specified in 15A NCAC 02B .0508. No changes are proposed.
Page 9 of 17

A special condition [Special Condition A. (10.)] is in the current permit that addresses historical permit
limits and calculated mass loads of BOD, TSS and NH3-N to be considered in developing wasteload
allocations resulting from future TMDLs or plant expansions. This special condition is maintained in the
permit.
Other WQBEL Considerations
If applicable, describe any other parameters of concern evaluated for WQBELs: The current permit has a
monitoring -only requirement for effluent DO at 12.0 MGD, based on a misinterpretation of seasonally low
levels being naturally occurring. However, the receiving stream is impaired for DO. To protect the instream
DO standard, a Daily Minimum effluent limit of 5.0 mg/L is added to the permit as this is the standard for
Class SC waters (15A NCAC 02B .0220).
The City submitted a Chemical Addendum with supplemental attachment for additional pollutants with the
application. The Chemical Addendum reports one 1,4-Dioxane result of 2.21 µg/L; the supplemental
attachment includes data of 30 PFAS parameters, from one sampling event in 2022. Because the effluent
discharges into a SC water with no downstream water supply, the data were evaluated against available non
water supply target values (i.e., 1,4-Dioxane, PFOA and PFOS).
Table 6. Effluent Reported Emerging Contaminants, sampled January 6, 2022.
Parameter
Result
Reference Target
Concentration
Date Sampled
1,4-Dioxane, µg/L
1/11/2022
2.21
80 1
PFOA, µg/L
1/6/2022
0.00511
Acute = 49,000
Chronic = 94
PFOS, µg/L
1/6/2022
0.00669
Acute = 30002
Chronic = 8.4
Footnotes.
1. Allowable discharge concentration based on RPA using instream target value of 80 µg/L for non water supply
waters and 7Q10 of 0 cfs (tidal).
2. EPA recommended instream target values for aquatic life.
Because 1,4-Dioxane was detected in the effluent at a concentration < 50% of the allowable concentration,
and no drinking water supply lies downstream, monitoring for this parameter is not required and is not
added to the permit. Based on detection of PFAS chemicals in the effluent at levels well below the target
values for aquatic life and that no drinking water supply lies downstream, monitoring of PFAS chemicals
is not required and is not added to the permit.
If applicable, describe any special actions (HQW or ORW) this receiving stream and classification shall
comply with in order to protect the designated waterbody: The receiving stream, the Lower Cape Fear
River, was designated a primary nursery area (PNA) under 15A NCAC 03R .0103(19)(a) in 1991, after the
facility expanded its flow to the current 12.0 MGD in 1989. Therefore, the PNA designation does not affect
limitations at the current flow rate (e.g., see RPA section above). However, to protect this type of HQW,
the following effluent limitations as specified in 15A NCAC 02B .0224 for new or expanded discharges
are as follows: BOD5 = 5 mg/L, TSS = 10 mg/L, NH3-N = 2 mg/L and DO = 6 mg/L plus a safety factor of
'h normal standard is included for individual toxics. Coincidentally, equivalent BOD and DO limits are
already in the current permit for expanded phases, as well as lower NH3-N limits. TSS limits were lowered
to 10 mg/L and the safety factor was added for the expansion phases in the 2018 permit. No changes are
proposed.
If applicable, describe any compliance schedules proposed for this permit renewal in accordance with 15A
NCAC 2H.0107(c)(2)(B), 40CFR 122.47, and EPA May 2007 Memo: The current permit has a compliance
Page 10 of 17

schedule for Total Copper, originally with a compliance date of March 1, 2022. A modification was issued
to extend the compliance date to November 29, 2022; CPFUA has requested an extension of the compliance
schedule into the next permit term with the renewal application. Based on the new information provided by
the 2018 model resulting in allowable discharge copper concentrations, and effluent concentrations showed
no reasonable potential for exceeding the allowable concentrations, the copper limits and the compliance
schedule to meet them have been removed from the permit.
If applicable, describe any water quality standards variances proposed in accordance with NCGS 143-
215.3(e) and 15A NCAC 2B.0226 for this permit renewal: NA.
7. Technology -Based Effluent Limitations (TBELs)
Municipals (if not applicable, delete and skip to Industrials)
Are concentration limits in the permit at least as stringent as secondary treatment requirements (30 mg/L
BOD5/TSS for Monthly Average, and 45 mg/L for BOD5/TSS for Weekly Average). YES.
If NO, provide a justification for alternative limitations (e.g., waste stabilization pond). NA.
Are 85% removal requirements for BOD5/TSS included in the permit? YES.
If NO, provide a justification (e.g., waste stabilization pond). NA.
8. Antidegradation Review (New/Expanding Discharge)
The objective of an antidegradation review is to ensure that a new or increased pollutant loading will not
degrade water quality. Permitting actions for new or expanding discharges require an antidegradation
review in accordance with 15A NCAC 2B.0201. Each applicant for a new/expanding NPDES permit must
document an effort to consider non -discharge alternatives per 15A NCAC 2H.0105(c)(2). In all cases,
existing instream water uses and the level of water quality necessary to protect the existing use is maintained
and protected.
If applicable, describe the results of the antidegradation review, including the Engineering Alternatives
Analysis (EAA) and any water quality modeling results: NA.
9. Antibacksliding Review
Sections 402(o)(2) and 303(d)(4) of the CWA and federal regulations at 40 CFR 122.44(1) prohibit
backsliding of effluent limitations in NPDES permits. These provisions require effluent limitations in a
reissued permit to be as stringent as those in the previous permit, with some exceptions where limitations
may be relaxed (e.g., based on new information, increases in production may warrant less stringent TBEL
limits, or WQBELs may be less stringent based on updated RPA or dilution).
Are any effluent limitations less stringent than previous permit (YES/NO): Yes.
If YES, confirm that antibacksliding provisions are not violated: Copper limits have been removed due to
the application of newly available dilution factors from the 2018 model. Since the copper limits were not
in effect due to the compliance schedule, backsliding did not occur.
Page 11 of 17

10. Monitoring Requirements
Monitoring frequencies for NPDES permitting are established in accordance with the following regulations
and guidance: 1) State Regulation for Surface Water Monitoring, 15A NCAC 2B.0500; 2) NPDES
Guidance, Monitoring Frequency for Toxic Substances (7/15/2010 Memo); 3) NPDES Guidance, Reduced
Monitoring Frequencies for Facilities with Superior Compliance (10/22/2012 Memo); 4) Best Professional
Judgement (BPJ). Per US EPA (Interim Guidance, 1996), monitoring requirements are not considered
effluent limitations under Section 402(o) of the Clean Water Act, and therefore anti -backsliding
prohibitions would not be triggered by reductions in monitoring frequencies.
The current permit has reduced monitoring frequencies for CBOD, TSS and Enterococci at 2/week at the
current 12.0 MGD flow. CFPUA requested continuation of reduced monitoring for these parameters plus
Ammonia in the permit renewal application. Because Ammonia has no limits in the permit, data cannot be
evaluated for frequency reduction per the 2012 NPDES guidance memo noted above; monitoring frequency
of 3/week for Ammonia is maintained in the permit. Data for BOD, TSS and Enterococci were evaluated
for continued monitoring frequency reduction, and all meet criteria. No changes are proposed.
For instream monitoring, refer to Section 4.
11. Electronic Reporting Requirements
The US EPA NPDES Electronic Reporting Rule was finalized on December 21, 2015. Effective December
21, 2016, NPDES regulated facilities are required to submit Discharge Monitoring Reports (DMRs)
electronically. While NPDES regulated facilities would initially be required to submit additional NPDES
reports electronically effective December 21, 2020, EPA extended this deadline from December 21, 2020,
to December 21, 2025. The current compliance date, effective January 4, 2021, was extended as a final
regulation change published in the Federal Register in November 2, 2020 This permit contains the
requirements for electronic reporting, consistent with Federal requirements.
12. Summary of Proposed Permitting Actions
Current permit conditions and proposed changes are summarized in Table 7 for the current 12.0 MGD flow
rate and in Table 8 for higher tiered flow rates (16.0, 20.0 and 24.0 MGD) upon expansion phases.
Table 7. Current Permit Conditions and Proposed Changes at 12.0 MGD.
Parameter
Current Permit 1
Proposed Change
Basis for Condition/Change
Flow
MA = 12.0 MGD
Monitor
continuously
No change
15A NCAC 02B .0400 at seq., 02B
0500 et seq.
Parameter
Current Permit 1
Proposed Change
Basis for Condition/Change
CBOD5
MA = 25.0 mg/L
WA = 40.0 mg/L
Monitor 2/week
No change
WQBEL. Determined via WLA
conducted in 1996. Monitoring
Frequency Reduction (MFR) criteria
met.
Page 12 of 17

TSS
MA = 30.0 mg/L
WA = 45.0 mg/L
Monitor 2/week
No change
TBEL. Secondary treatment
standards / 40 CFR 133 / 15A NCAC
2B .0406. MFR criteria met.
NH3-N
Monitor 3/week
No change
Allowable concentrations > 35 µg/L;
limits not required. State WQ
reporting requirements 15A NCAC
2B .0500. A lack of limits precludes
MFR consideration.
Enterococci
(geometric mean)
MA = 35 /100 mL
WA = 276 /100 mL
Monitor 2/week
No change
WQBEL. State WQ standard, 15A
NCAC 2B .0200. MFR criteria met.
Total Residual Chlorine
(TRC)
DM = 13 µg/L
Monitor daily when
chlorine is added to
the treatment
system
No change
EPA Nationally Recommended
Water Quality Criterion for Salt
Water, 2006.
Temperature
Monitor daily
No change
State WQ reporting requirements
15A NCAC 2B .0500.
pH
6.8 — 8.5 SU
Monitor daily
No change
WQBEL. State WQ standard, 15A
NCAC 2B .0200, .0500.
Dissolved Oxygen (DO)
Monitor daily
> 5 mg/L
WQBEL. State WQ standard, 15A
NCAC 2B .0200, .0500. Receiving
stream is impaired for DO.
Conductivity
No requirement
Add effluent and
instream monitoring
State WQ reporting requirements
15A NCAC 2B .0500; facility treats
industrial waste.
Total Nitrogen
Monitor monthly
No change
State WQ reporting requirements
15A NCAC 2B .0508.
Total Phosphorus
Monitor monthly
No change
State WQ reporting requirements
15A NCAC 2B .0508.
Total Phenolic
Compounds
Monitor quarterly
Remove from permit
Reasonable Potential Analysis run
with modeled dilution factor yielded
revised Allowable Concentrations;
no reasonable potential found to
exceed WQS.
Total Copper
MA = 3.7 µg/L
DM = 5.8 µg/L
Monitor monthly
Compliance
schedule until
11/29/2022
Remove from permit
Reasonable Potential Analysis run
with modeled dilution factor yielded
revised Allowable Concentrations;
no reasonable potential found to
exceed WQS.
Parameter
Current Permit 1
Proposed Change
Basis for Condition/Change
Total Silver
Monitor quarterly
Remove from permit
No RP found; all nondetects at < 0.1
and < 0.21 (one result)
Page 13 of 17

Mercury
Mercury
Minimization Plan
(MMP)
Revise wording
toward maintaining
MMP
2012 Statewide Mercury TMDL
Implementation
Toxicity Test
Chronic
Ceriodaphnia
dubia Pass/Fail at
3.0% effluent
Revise to 3.8%
effluent
WQBEL. No toxics in toxic
amounts. 15A NCAC 2B.0200 and
15A NCAC 2B.0500. Change based
on IWC result from 2018 JP-EFDC
dilution model.
Effluent Pollutant Scan
Monitor three years
per permit cycle:
Revise sample years
to 2023, 2024, 2025.
40 CFR 122
Dilution Modeling
Special condition
Remove from permit
Required model conducted in 2018.
Electronic Reporting
Special condition
Add language for
new electronic
reporting deadline
December 21, 2025
In accordance with EPA Electronic
Reporting Rule 2015 and Rule -Phase
2 Extension.
Footnote
1. MGD = Million gallons per day; MA = Monthly Average; WA = Weekly Average; DM = Daily
Maximum; QA = Quarterly Average.
Table 8. Current Permit Conditions and Proposed Changes at expansion phases above 12.0 MGD.
Parameter
Current Permit 1
Proposed Change
Basis for Condition/Change
Flow
MA = 16.0, 20.0, 24.0
MGD expansion phases
No change
15A NCAC 02B .0400 at seq., 02B
.0500 et seq.
BOD5
Summer
No change
WQBEL. BAT for the receiving
stream segment, which is impaired
for DO, as recommended in Ch. 30
of the 2005 Cape Fear River
Basinwide Water Quality Plan.
MA = 5.0 mg/L
WA = 7.5 mg/L
Winter
MA = 10.0 mg/L
WA = 15.0 mg/L
Monitor daily
TSS
MA = 10.0 mg/L
WA = 15.0 mg/L
Monitor daily
No change
WQBEL. HQW standards for PNAs
in 15A NCAC 02B .0224.
NH3-N
Summer
MA = 1.0 mg/L
WA = 3.0 mg/L
Winter
MA = 2.0 mg/L
WA = 6.0 mg/L
Monitor daily
No change
WQBEL. BAT for the receiving
stream segment, which is impaired
for DO, as recommended in Ch. 30
of the 2005 Cape Fear River
Basinwide Water Quality Plan.
Parameter
Current Permit'
Proposed Change
Basis for Condition/Change
Enterococci
(geometric mean)
MA = 35 /100 mL
WA = 276 /100 mL
Monitor daily
No change
WQBEL. State WQ standard, 15A
NCAC 2B .0200.
Page 14 of 17

Total Residual
Chlorine (TRC)
DM = 13 µg/I
Monitor daily when
chlorine is added to the
treatment system
No change
EPA Nationally Recommended
Water Quality Criterion for Salt
Water, 2006.
Temperature
Monitor daily
No change
State WQ reporting requirements
15A NCAC 2B .0500.
pH
6.8 — 8.5 SU
Monitor daily
No change
WQBEL. State WQ standard, 15A
NCAC 2B .0200, .0500.
Dissolved Oxygen
(DO)
> 6 mg/L
—
No change
WQBEL. State WQ standard for SC
waters, 15A NCAC 2B .0200., .0500.
Conductivity
No requirement
Add daily monitoring
State WQ reporting requirements
15A NCAC 2B .0500; facility treats
industrial waste.
Total Nitrogen
Monitor monthly
No change
State WQ reporting requirements
15A NCAC 2B .0508.
Total Phosphorus
Monitor monthly
No change
State WQ reporting requirements
15A NCAC 2B .0508.
Total Phenolic
Compounds
Monitor quarterly
Remove from permit
Reasonable Potential Analysis run
with modeled dilution factor yielded
revised Allowable Concentrations;
no reasonable potential found to
exceed WQS.
Total Copper
MA = 1.8 µg/L
DM = 2.9 µg/L
Monitor monthly
Remove from permit
Reasonable Potential Analysis run
with modeled dilution factor yielded
revised Allowable Concentrations;
no reasonable potential found to
exceed WQS.
Total Silver
Monitor quarterly
Remove from permit
No RP found; all nondetects at < 0.1
and < 0.21 (one result)
Bis(2-ethylhexyl)
phthalate
No requirement
Add quarterly
monitoring
RP found with limited dataset (n < 8
samples)
Mercury
Mercury Minimization
Revise wording
maintaining
toPlan
2012 Statewide Mercury TMDL
Implementation
(MMP)lw�aPd
Parameter
Current Permit'
Proposed Change
Basis for Condition/Change
Toxicity Test
Chronic 7-day pass/fail
test using
Ceriodaphnia dubia at:
Revise to:
• 4.5% effluent at
16.0 MGD
WQBEL. No toxics in toxic
amounts. 15A NCAC 2B.0200 and
15A NCAC 2B.0500. Change based
Page 15 of 17

• 4.0% effluent at
16.0 MGD,
• 5.0 % effluent at
20.0 MGD,
• 6.0% effluent at
24.0 MGD
• 5.1% effluent at
20.0 MGD,
• 5.7% effluent at
24.0 MGD
on IWC results from 2018 JP-EFDC
dilution model.
Effluent Pollutant
Scan
Monitor annually
Monitor three years
per permit cycle
when in effect.
40 CFR 122
Electronic
Reporting
Special condition
Add language for
new electronic
reporting deadline
December 21, 2025
In accordance with EPA Electronic
Reporting Rule 2015 and Rule -Phase
2 Extension.
Footnote
1. MGD = Million gallons per day; MA = Monthly Average; WA = Weekly Average; DM = Daily
Maximum; QA = Quarterly Average.
13. Public Notice Schedule:
Permit to Public Notice: 08/19/2022.
Per 15A NCAC 2H .0109 & .0111, The Division will receive comments for a period of 30 days following
the publication date of the public notice. Any request for a public hearing shall be submitted to the Director
within the 30 days comment period indicating the interest of the party filing such request and the reasons
why a hearing is warranted.
14. NPDES Division Contact:
If you have questions regarding any of the above information or on the attached permit, please contact Gary
Perlmutter at [phone] or via email at [e-mail].
15. Fact Sheet Addendum (if applicable):
Were there any changes made since the Draft Permit was public noticed (Yes/No): No. Only comments
from CFPUA were received. No comments from EPA or other parties were received. CPFUA requested
the effluent DO minimum of < 5 mg/L be removed at the current flow tier, with monitoring only until
expansion. The minimum limit will not be removed as it is the standard for Class SC waters, and the
receiving water is impaired for DO.
Other comments from CPFUA pertained to the draft permit cover letter; these will be addressed in the final
cover letter.
If Yes, list changes and their basis below: NA.
16. Fact Sheet Attachments (if applicable):
Page 16 of 17

• Pollutants of Concern (POC) Review Form
• Pretreatment Summary
• NC 2022 303(d) list, page 20
• Effluent summary charts and tables
• NC 2022 Integrated Report, page 193
• Instream summary charts and tables
• Monitoring Report (MR) Violations page
• WET testing and Self -Monitoring Summary, page 71
• Compliance Inspection Report, 6/14/2022
• Saltwater Ammonia Criteria Calculations sheet
• Saltwater RPA spreadsheets (12.0, 16.0, 20.0, 24.0 MGD)
• Mercury WQBEL/TBEL Evaluation data and summary tables
• MMP Activity Report
• Monitoring Reduction spreadsheet
• Chemical Addendum
• Comments to the draft permit by CFPUA
Page 17 of 17

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NPDES Permit Writer
NPDES/PT POC Review Form
1. Facility's General Information
Version: 2022.03.04
2
3
Date of (draft) Review
c. POC review due to:
e. Contact Information
4
Date of (final) Review
Municipal NPDES renewal
0
Regional Office (RO)
Wilmington
5
NPDES Permit Writer (pw)
Gary Perlmutter
New Industries
RO PT Staff
Helen Perez
RO NPDES Staff
Morella S. King
■
6
Permittee-Facility Name
Cape Fear Public Utility Authority (CFPUA) -
M'Kean Maffitt (Southside) WWTP
WWTP expansion
ID
Facility PT Staff, email
Beth Eckert, [e-mail]
7
NPDES Permit Number
NC0023973
Stream reclass./adjustment
f. Receiving Stream
•
8
NPDES Permit Effective Date
3/1/2018
Outfall relocation/adjustment
❑
Outfall
9
NPDES Permit Renewal Application
Date
5/12/2022
7Q10 update
❑
Receiving Stream:
Cape Fear River
QA, cfs:
Tidal
10
NPDES Permit Public Notice Date
Other, explain below
0
Stream Class
SC-PNA
7Q10 (S), cfs:
Tidal
11
eDMR data evaluated from:
to
Comments on POC review trigger:
Oufall Lat.
34° 09' 06" N
Outfall Long.
77° 56' 56" W
12
a. WWTP Capacity Summary
CFPUA has applied for a permit renewal with
plans to begin construction for expansion in 2025
(expansion tiers already in permit).
Outfall II
13
Current Permitted Flow, mgd
12.0
Designed Flow,
mgd
12.0
Receiving Stream:
QA, cfs:
14
Permitted SIU Flow, mgd
0.35
d. IU Summary
Stream Class
7Q10, cfs:
15
b. PT Docs. Summary
# IUs
1
Oufall Lat.
Outfall Long.
16
IWS approval date
7/31/2018
# SIUs
1
Is there a PWS downstream of the Facility's Outfalls?
0 YES Ei NO
17
L/STMP approval date:
12/12/2018
# CIUs
n
Comments:
18
HWA approval date
8/7/2019
# NSCIUs
19
# IUs w/Local
Permits or Other
Types
20
2. Industrial Users' Information.
21
#
Industrial User (IU) Name
IU Activity
IU Conventional Pollutants
IU Non Conventional Pollutans & Toxic Pollutant
IUP Effective Date
22
1
New Hanover Regional Medical Center
Hospital
Flow, BOD, TSS, pH, Temperature, Oil &
Grease
AI, NH3, As, Ba, CBOD, Cd, CI, Cr, COD, Cu, CN, Fe, Pb, Hg Ni, Phosphorus, Ag, TKN,
Mo. Se. Zn
7/1/2020
23
2
24
3
25
4
26
5
31
Comment:
32
3. Comments from NPDES pw
33
Facility Summary, background information, and NPDES regulatory action:
Comments from NPDES pw to PT staff (Central, RO, Facility):
34
The CFPUA applied for an NPDES permit renewal for its M'Kean Maffitt (Southside)
WWTP, received by DWR on May 12, 2022. This facility serves the City of
Wilmington (pop. -43,488) and New Hanover County (pop. -22,948) for a total
population of -66,436. Southside WWTP treats domestic and industrial wastewater
with an active pretreatment program involving one Significant Industrial User (SIU):
New Hanover Regional Medical Center. Biosolids management include gravity belt
thickening, anaerobic digestion, and belt filter press dewatering; dewatered solids are
then hauled offsite to a municipal landfill for disposal.
The current permit has three expansion flow tiers: 16.0, 20.0 and 24.0 MGD with a
summary of the scheduled upgrade/expansion in the permit application, with
construction planned to begin in Fiscal Year 2025.
Please maintain the following POC in the
L/STMP:
35
POC that need to be added/modified in
L/STMP:
36
POC that may be removed from L/STMP:
37
ORC's comments on IU/POC:
38
Additional pollutants added to L/STMP due
to POTWs concerns:
39
NPDES pw's comments on IU/POC:
40
4. Status of Pretreatment Program (check all that apply)
41
Status of Pretreatment Program (check all that apply)
42
❑
1) facility has no SIU's, does have Division
2) facility has no SIU's, does not have
3) facility has SIUs and DWQ approved
3a) Full Program with LTMP
3b) Modified Program with STMP
4) additional conditions regarding Pretreatment
5) facility's sludge is being land applied
6) facility's sludge is incinerated (add
7) facility's sludge is taken to a landfill,
8) other
approved
Division approved
Pretreatment
attached
or composted
Beryllium and
if yes which
Pretreatment
Pretreatment
Program
or listed
Mercury sampling
landfill:
Program that
Program
below
according
is INACTIVE
to § 503.43)
43
■
44
■
45
ii
46
■
47
❑
48
❑
49
❑
50
g
municipal landfill
51
❑
52
Sludge Disposal Plan:
Solids/ residuals produced within the plant's processes are stabilized to North Carolina Class B land application standards but are currently landfilled at a Municipal Landfill.
53
54
55
Sludge Permit No:
Class A Residuals Permit WQ0011869 and Class B Permit WQ0001271.
Page 1
23973 POC Review Form

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5. LTMP/STMP and HWA Review
57
PW: Find L/STMP document, HWA spreadsheet, DMR, previous and new NPDES permit for next section.
58
POC in LTMP
Parameter of Concern
(POC) Check List
New
NPDES
POC
Previous
NPDES
POC
Required by
EPA PT(1)
POC due to
Sludge (2)
POC due to
SIU (3)
POTW
POC (4)
%
Removal
Rate
Effluent
Freq
NPDES
Effluent Freq
PQLs review
Comment
59
PQL from
LTMP, µg/L
Req. PQL per
NPDES permit
Recomm.
PQL, pg/L
60
Flow
0
0
0
Quarterly
Continuous
°
■
61
BOD
❑
■
X
0
92.64
Quarterly
2.0 mg/L
o
■
62
0
TSS
0
0
X
0
97.45
Quarterly
2/week
2.5 mg/L
•
63
0
NH3
0
o
X
0
27.19
Quarterly
3/week
250.0
■
64
0
Arsenic
0
0
p
45.00
Quarterly
2.0
p
■
65
Barium
0
0
p
0
0
67.77
Quarterly
10.0
•
66
Beryllium(5)
0
0
0
0
Quarterly
0.1
o
o
67
Cadmium(1)
0
❑
p
❑
❑
68.00
Quarterly
2.0
0.5
Report to recommended PQL
o
0
68
ID
Chromium(1)
0
0
p
p
p
0
55.00
Quarterly
5.0
10.0
69
ID
Copper(1)
0
p
p
p
81.30
Quarterly
Monthly
1.0
2.0
o
■
70
Gym -Ride
0
0
0
0
0
59.00
Quarterly
10.0
May be removed as all data nondetects.
0
71
ID
Lead(1)
0
0
0
55.00
Quarterly
5.0
2.0
io
o
■
72
Mercury(5)
0
0
0
0
0
92.40
Quarterly
0.5 ng/L
0.001
o
0
73
Molybdenum
0
0
0
0
0
33.00
Quarterly
100.0
10.0
Report to recommended PQL
o
74
ID
Nickel(1)
0
0
p
0
0
29.00
Quarterly
2.0
5.0
o
75
p
Selenium
0
0
0
❑
50.00
Quarterly
10.0
•
76
Silver
❑
p
0
p
66.00
Quarterly
Quarterly
0.1
1.0
p
■
77
ID
Zinc(1)
0
0
0
0
85.97
Quarterly
10.0
p
•
78
0
Sludge Flow to Disposal
0
❑
❑
79
ID
% Solids to Disposal
io
■
■
80
Oil & Grease
0
Quarterly
5.0 mg/L
o
•
81
p
TN
0
p
0
Quarterly
Monthly
100.0
■
82
TP
0
0
Quarterly
Monthly
50.0
in
■
■
83
PFAS 1633
0
0
•
■
■
84
0
1,4 Dioxane
❑
0
■
■
85
p
Aluminum
❑
❑
p
92.19
Quarterly
10.0
■
86
0
Boron
0
❑
0
■
87
p
CBOD
0
p
96.77
Quarterly
2.0 mg/L
o
•
88
0
Chloride
0
0
0
Quarterly
1.0 mg/L
o
89
p
COD
0
❑
Quarterly
10.0 mg/L
■
p
90
x
Iron
❑
❑
❑
p
Quarterly
10.0
91
x
TKN
0
0
Quarterly
100.0
■
p
92
x
TS
Quarterly
10 mg/L
93
Footnotes:
(1) Always in the LTMP/STMP due to EPA -PT requirement
(2) Only in LTMP/STMP if listed in sludge permit
(3) Only in LTMP/STMP while SIU still discharges to POTW
(4) Only in LTMP/STMP when pollutant is still of concern to POTW
(5) In LTMP/STMP, if sewage sludge is incinerated
lease use blue font for the info updated by pw
Please use red font for POC that need to be added/modified in L/STMP sampling plan
94
95
96
97
98
99
100
101
.
Blue shaded cell (D60:H82): Parameters usually included under that POC list
102
103
104
- 6. Pretreatment updates in response to NPDES permit renewal
®1
NPDES Permit Effective Date
180 days after effective (date):
Permit writer, please add list of required/recommended PT updates in NPDES permit cover letter.
Page 2 23973 POC Review Form

Pretreatment Program Info Database
printed on: 7/1/2022
for
Program Name Cape Fear Public Utility
WWTP Name M.K.Maffitt
Program Approval Date
Pretreatment Status
Region
County
NPDES Number
NPDES Effective Date
NPDES Expire Date
POTW is Primary WWTP
Design Flow mgd
WWTP SIU's
WWTP CIU's
date Inactive
1
0
06/30/2008
Full
WIRO
New Hanover
NC0023973
03/01/2018
11/30/2022
FALSE
12.0000
Program SIUs
Program CIUs
•
Stream Information Iwc %o at 7Q10 100.00
7Q10 Flow cfs /mgd 0
1 Q10 Flow cfs / mgd 0.00 / 0.00
Stream Classification SC
Basin Number CPF17
Receiving Stream Name CAPE FEAR RIVER
/ 0.00
Last PAR Rec 02/16/2022
Current Fiscal 08/28/2020
Year PCI Done
Last Audit on 04/21/2021
% Design mgd is SIU permitted
7
2
Date Next Due
Date Received by DWR
Date Approved
Adopt Date Required
Date Adopted
HWA
06/30/2024
06/27/2019 12/07/2018
08/07/2019 12/12/2018
2.92
LTM P
PAR Due Date 03/01/2023
Audit Year Next25/26
Permitted SIU flow (mgd) [Pt_SIU)
IWS SUO
08/01/2023
07/18/2018 12/29/2016 11/07/2019
07/31/2018 03/21/2017 02/05/2020
mercury
1631
required
yes
.35
05/10/2017
ERP
Info in this Box from Pt Contacts
PT_Pro
g.Prime Phonel
Formal Name
ext
Fax
Date Date Date
Attended Attended Attended
HWA Wksp IUP Wksp PAR Wksp
Mr. William Roy I 11(910) 332-6423
I 1(910) 332-6730 I 1/24/2017
15/21/2015 11/27/2015
[e-mail]
Environmental Compliance Manager
235 Government Center Dr.
128403
Mr. Brock Ridout I 11910-332-6558
I 1910-332-6730 II
I 11/19/2012 I
[e-mail]
Environmental Compliance Officer
235 Government Center Drive
28403
Ms. Beth Eckert (Prim 11(910) 332-6646
I 1(910) 332-6730 I 4/25/2002
15/21/2015 11/27/2015 I
[e-mail]
Environmental Management Director
235 Government Center Dr.
128403
Ms. Maggie Butler I 11910-332-6558
I 1910-332-6730 II 3/4/2015
15/21/2015 11/23/2017 I
[e-mail] (
Environmental Compliance Sup.
Pretreatment Related NOVs from DWQ
DWR Central Office Contact
DWR Regional Contact
McGee & Miller
Tom Tharrington

Upper Cape Fear
AU Name
AU ID Description
Gulf Creek 18-5-(2)
NORTH CAROLINA 2022 303(D) LIST
Cape Fear River Basin
AU Number Classification AU_LengthArea AU_Units
WS-IV;CA
4746 From a point 0.2 mile upstream of mouth to Cape Fear River
0.3
FW Miles
PARAMETER IR CATEGORY CRITERIA STATUS
M.
REASON FOR RATING 303D YEAR
Fish Community (Nar, AL, FW) 5 Exceeding Criteria
Fair, Poor or Severe Bioclassification 2000
Cape Fear River Basin 0303000 Lower Cape Fear
CAPE FEAR RIVER 18-(63)a C;Sw 3.8 FW Miles
4387 From raw water supply intake at Federal Paper Board corporation (Riegelwood) to Bryant Mill Creek
PARAMETER
IR CATEGORY CRITERIA STATUS REASON FOR RATING 303D YEAR
Benthos (Nar, AL, FW)
5 Exceeding Criteria 1Fair, Poor or Severe Bioclassification 1998
CAPE FEAR RIVER 18-(71)a1
SC 10.6 S Acres
13506I 1From upstream mouth of Toomers Cr. To Railroad bridge at Navassa
PARAMETER
Dissolved Oxygen (5 mg/I, AL, SW)
IR CATEGORY CRITERIA STATUS WIN REASON FOR RATING
5 Exceeding Criteria
303D YEAR
1998
CAPE FEAR RIVER
139941 From Railroad bridge to Hwy 17 bridge.
PARAMETER IR CATEGORY CRITERIA STATUS REASON FOR RATING 303D YEAR
Dissolved Oxygen (5 mg/I, AL, SW) 5 Exceeding Criteria 1998
Hexavalent Chromium Fish Tissue Advisory 5 Exceeding Criteria DHHS Fish Consumption Advisory 2020
(Advisory, FC, NC)
Arsenic Fish Tissue Advisory (Advisory, FC, NC) 5 Exceeding Criteria DHHS Fish Consumption Advisory 2020
18-(71)a2a SC 290.0 S Acres
CAPE FEAR RIVER 18-(71)a2b SC
13995 From Hwy 17 bridge to Greenfield Creek
149.8 S Acres
PARAMETER
IR CATEGORY CRITERIA STATUS REASON FOR RATING 303D YEAR
Dissolved Oxygen (5 mg/I, AL, SW)
5 Exceeding Criteria Exceeding Criteria with Statistical 1998
Confidence
CAPE FEAR RIVER
13732 From Greenfield Creek to Barnards Creek
PARAMETER
Dissolved Oxygen (5 mg/I, AL, SW)
Copper (3 µg/I, AL, SW)
IR CATEGORY
5
5
18-(71)a3 SC 1,274.9 S Acres
CRITERIA STATUS
Exceeding Criteria
Exceeding Criteria
REASON FOR RATING 303D YEAR
1998
Legacy Category 5 Total Metals 2008
Assessment
6/7/2022 NC 2022 303d List- Approved by EPA 4/30/2022
Page 20 of 192

M'Kean Maffitt (Southside) WWTP
Effluent Monitoring NC0023973
14
12
10
8
2 6
4
2
0
Flow
• Mo Avg Limit
•
45
40
35
30
25
E 20
15
10
5
0
Carbonaceous Biological Oxygen Demand
(CBOD)
Wk Avg • Mo Avg WA Limit • MA Limit
• •
•;•1
ti\noy o\noy�\noy� ,ti\no\\no�o o\nosy\nosy
120
100
73 80
0
E 60
CC
• 40
20
0
CBOD Removal Rate
• Effluent —Limit
orrillswOollowsorowievoeursoloym
•
c> Oyu oN, oN' &, 01' Ony (9'' On'L On'L
Summary Statistics
N 1461
Avg 7.601
SD 1.502
Min 4.939
Max 23.020
Summary Statistics
N 624
Avg 7.9
SD 3.5
Min 3.0
Max 30.0
Summary Statistics
N 623
Avg 95.9
SD 1.9
Min 81.6
Max 98.6
Page 1 of 5 GB Perlmutter, 8/5/2022

M'Kean Maffitt (Southside) WWTP
Effluent Monitoring NC0023973
50
45
40
35
30
o 25
E 20
15
10
5
0
Total Suspended Solids (TSS)
Wk Avg • Mo Avg WA Limit MA Limit
•
•
• •
• oaStiel•y/ A • ▪ ••
•
r•
•
• �•
o�� \tioo�� \n/OS> oyo oyo \ ti\�\�o��
tio ti e �\ w
Summary Statistics
N 420
Avg 6.6
SD 4.7
Min 2.5
Max 49.3
Summary Statistics
N 420
Avg 96.7
SD 2.7
Min 70.1
Max 99.4
Summary Statistics
N 627
Avg 27.4
SD 5.9
Min 3.7
Max 41.2
Page 2 of 5 GB Perlmutter, 8/5/2022

M'Kean Maffitt (Southside) WWTP
Effluent Monitoring NC0023973
40
J
30
20
Summary Statistics
N 428
Geomean 9
Min 1
Max 1330
Summary Statistics
N 521
Avg 14.2
SD 7.2
Min 10.0
Max 50.0
Summary Statistics
N 994
Avg 22
SD 4
Min 13
Max 28
Page 3 of 5 GB Perlmutter, 8/5/2022

M'Kean Maffitt (Southside) WWTP
Effluent Monitoring NC0023973
9.0
8.5
8.0
7.5
N 7.0
6.5
6.0
5.5
5.0
• Effluent
pH
L. Limit U Limit
firfaigSVP4461.11141114.414414616• • •
•
93,
,NA 0 oti� 9,,, oti�' otio
otiti o1> otin" oi*
50
45
40
35
30
awn 25
E 20
15
10
Summary Statistics
N 994
Avg 7.4
SD 0.1
Min 6.9
Max 8.0
Summary Statistics
N 994
Avg 7.0
SD 0.6
Min 2.6
Max 8.4
Summa Statistics
N 994
Avg 7.0
SD 0.6
Min 2.6
Max 8.4
TKN
N 994
Avg 7.0
SD 0.6
Min 2.6
Max 8.4
NO2+NO3
N 994
Avg 7.0
SD 0.6
Min 2.6
Max 8.4
Page 4 of 5 GB Perlmutter, 8/5/2022

Effluent Monitoring NC0023973
M'Kean Maffitt (Southside) WWTP
5.0
4.5
4.0
3.5
J 3.0
ern 2.5
E
2.0
1.5
1.0
0.5
0.0
Limits not in effect due to a permit compliance schedule.
Summary Statistics
N 48
Avg 3.7
SD 0.7
Min 1.5
Max 4.8
Summary Statistics
N 123
Avg 5.89
SD 1.66
Min 1.80
Max 10.60
Page 5 of 5 GB Perlmutter, 8/5/2022

Lower Cape Fear
AU Name
AU ID Description
CAPE FEAR RIVER
NORTH CAROLINA 2022 INTEGRATED REPORT
Cape Fear River Basin
AU Number Classification AU LengthArea AU Units
13994 From Railroad bridge to Hwy 17 bridge.
18-(71)a2a
SC
290.0
S Acres
2022 Water Quality Assessments
Mr
PARAMETER IR CATEGORY CRITERIA STATUS
Dissolved Oxygen (5 mg/I, AL, SW)
Water Temperature (32°C, AL, LP&CP)
pH (4.3 su, AL, Sw)
pH (8.5, AL, SW)
Turbidity (25 NTU, AL, FW acres & SW)
Hexavalent Chromium Fish Tissue Advisory (Advisory, FC, NC)
Arsenic Fish Tissue Advisory (Advisory, FC, NC)
Fecal Coliform (GM 200/400, REC, FW)
5
1
1
1
1
5
5
1
Exceeding Criteria
Meeting Criteria
Meeting Criteria
Meeting Criteria
Meeting Criteria
Exceeding Criteria
Exceeding Criteria
Meeting Criteria
CAPE FEAR RIVER
13995 From Hwy 17 bridge to Greenfield Creek
18-(71)a2b SC 149.8 S Acres
2022 Water Quality Assessments
PARAMETER IR CATEGORY CRITERIA STATUS
Water Temperature (32°C, AL, LP&CP) 1 Meeting Criteria
Dissolved Oxygen (5 mg/I, AL, SW) 5
pH (4.3 su, AL, Sw) 1 Meeting Criteria
pH (8.5, AL, SW) 1 Meeting Criteria
Turbidity (25 NTU, AL, FW acres & SW) 1 Meeting Criteria
Exceeding Criteria
6/7/2022 NC 2022 INTEGRATED REPORT -Category 5 Approved by EPA 4/30/2022
Page 193 of 1346

M'Kean Maffitt (Southside) WWTP
Instream Monitoring NC0023973
E
12
10
8
6
4
2
0
Dissolved Oxygen (DO)
• Upstream • Effluent Dnstream
Standard
1 limb
ditillie
•4
.1.1j11*118. III truil :1.---thil'i .
•
•
n
4
O,� O�� O,� O,� O,O OHO O�� 61> O��
40000
35000
30000
E 25000
-. 20000
v)
15000
10000
5000
0
tit
\�ti
9.
Page 1 of 4
GB Perlmutter, 8/5/2022

M'Kean Maffitt (Southside) WWTP
Instream Monitoring NC0023973
10000
_11000
C
0 100
U
10
1
Enterococci
• Upstream • Effluent ♦ Dnstream
■
■
•
1
• ■ /. •■ ♦• • •
■to
■ ■ ■■ ■
■
•
sl$4:♦ • •
A� ♦:ems
�■ r ■ ■
I MI
oC:' oy° oyo oti° otiy ol> oti
.5\���ti �\yo�ti o\���ti h�y / °\yeti y\�),
100
10
1
0.1
0.01
Ammonia-N (NH3-N)
• Upstream • Dnstream ♦ Effluent
M♦♦
♦A& ♦♦♦y1M• 4 • •
.4♦ Y
ALA 41AA•AA4A
•■
w▪ ' •
"orrg • ti s.ilg.!■IP* •
�.� • mom
1
•
■
oyA cb oN. oy�' oy° oy° oti° o"ly oti' oti
�\���ti �\yo�ti yo\�A\ti �\yh�ti y10.v o\y��ti N, �\��ti -1,''
E
10 -
1
0.1
0.01
Inorganic Nitrogen (NO2+NO3)
• Upstream • Effluent ♦ Dnstream
femli min MM •ME
•
•
•
♦♦ ♦ ■ ♦
•► AIL AA AI ♦i. Ai •
oy� oy� oy° oy° oti° A> A>
oooti oti
o\���ti �\yo�ti yo\���ti h\yh�ti y\� o\y�ti \��ti
Page 2 of 4
GB Perlmutter, 8/5/2022

M'Kean Maffitt (Southside) WWTP
Instream Monitoring NC0023973
100
1
0.1
Total Kjeldahl Nitrogen (TKN)
• Upstream • Effluent ♦ Dnstream
r.%Nip
oti oti otioti° oti° oti otiy oti oti
pH
• Upstream • Effluent ♦ Dnstream — — L. Std
9.0
8.5
8.0
7.5
7.0
6.5
6.0
5.5
5.0
U. Std
♦ • ♦
ilistlej:Irmtvwk !tlf,
oti oti' oti' oti oti° oti°
\��\ti \yo\ti yo\��\ti\��\ti �\ti\ti o\y�\ti
10.0
1.0
0.1
0.0
Total Phosphorus
• Upstream ■ Effluent Dnstream
••• jibe MIP .- MEn.0- k
■
♦E ! 6
AO I fa 2 t
• Ai le 42 • # AisA41—
o'' oti' oti' oti° ON' ° otioti' 01' oti' oti'
°\ti\y°\ti yo\�,�ti h\yhti ��ti\ti o\y�\ti\�\ti��ti\�\ticz,\��\ti
Page 3 of 4
GB Perlmutter, 8/5/2022

M'Kean Maffitt (Southside) WWTP Instream Monitoring NC0023973
60
50
40
J
Sao 30
E
20
10
Total Suspended Solids (TSS)
• Upstream • Effluent ♦ Dnstream
O,� ONE OHO O,� OHO O�y O�y O� '
Page 4 of 4 GB Perlmutter, 8/5/2022

Whole Effluent Toxicity Testing and Self Monitoring Summary
U
0
U
0
Jan Apr Jul Oct
NC0081370/001
McLin Creek WWTP
chr lim: 9% @ 0.3MG
0
a
n
a)
0
Oa
a MI ro
a a a
a a a
CO m 0
0 0 0 0 0
U
0
U
0
Jan Apr Jul Oct
0
0
U
m
C0
E
c
0
U
NC0021474/001
Mebane WWTP
NonComp: Single
chr lim: 90%
O
n
a)
m
LL
0
N
n
0)
0
O
O
0
8
Q
0.
CO m 0 N
0 0 0 0 0
U
0
U
0
N
Mar Jun Sep Dec
0
0
O
a
N
0
z
Z
0
rl
CS
N
O Q
E o
(0 u
o_ c
z
0
U
NC0088340/001
Millpond WTP - Bayboro
Ac P/F Monit: 90% M
CO
O
N
ci
.0)
CO
p a a a a
LL
CO m 0 0
0 0 0 0 0
N N N N N
U
0
UI
0
N
Mar Jun Sep Dec
0
m —
00
m
m a
0
Qcf
N
c
O
00
UJ
00
O
N ,
-o E
o
x c
0
z
0
U
NC0085511/001
Mills River WTP (NCG590034)
Ac P/F Limit: 90% Fth
Begin: 4/1/2016
Q a a a
C
L
m o
0 0 0 0CV CV CV
U
0
UI
0
N
Mar Jun Sep Dec
0
c
O
00
U1
00
New Hanover
0
U
NC0023973/001
M'Kean Maffit (Southside) WWTP
7Q10: Tidal
NonComp: Single
Cerio7dPF lim: 3% @
CO
a -I
Csl
M
c
E
m
LL
a
a)
U
to co co
a a a
n
1 a a a a
C
LL
CO m o
0 0 0 0 0
Page 71 of 117
Legend: P= Fathead minnow (Pimnhales oromelas). H=No Flow (facility is active). s = Split test between Certified Labs

United States Environmental Protection Agency
E PA Washington, D.C. 20460
Water Compliance Inspection Report
Form Approved.
OMB No. 2040-0057
Approval expires 8-31-98
Section A: National Data System Coding (i.e., PCS)
Transaction Code NPDES yr/mo/day Inspection
1 IN I 2 IL I 3 I NC0023973 111 121 22/06/14 117
Type
1810I
IIIIIIIIIII
Inspector Fac Type
19I S I 2011
21IIIIII IIIIIIIIIIIIIIIIII I IIIIII
P6
Inspection Work Days Facility Self -Monitoring Evaluation Rating B1 QA Reserved
671 I 70I I 711 172 I N I 73I 1 74 71
I I
I I I I I I 180
Section B: Facility Data
Name and Location of Facility Inspected (For Industrial Users discharging to POTW, also include
POTW name and NPDES permit Number)
Wilmington Southside WWTP
3436 River Rd
Wilmington NC 28402
Entry Time/Date
08:45AM 22/06/14
Permit Effective Date
18/03/01
Exit Time/Date
10:30AM 22/06/14
Permit Expiration Date
22/11/30
Name(s) of Onsite Representative(s)/Titles(s)/Phone and Fax Number(s)
///
Steven K Styers/ORC/910-332-6578/
Other Facility Data
Name, Address of Responsible Official/Title/Phone and Fax Number
Contacted
Steven Styers,235 Government Center Dr Wilmington NC
28403/ORC/910-332-6578/9103326730 No
Section C: Areas Evaluated During Inspection (Check only those areas evaluated)
Permit Flow Measurement Operations & Maintenar Records/Reports
Self -Monitoring Progran Sludge Handling DispoEffluent/Receiving Wate
Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary)
(See attachment summary)
Name(s) and Signature(s) of Inspector(s) Agency/Office/Phone and Fax Numbers Date
Brian S West DWR/WIRO WQ/910-796-7341/
Signature of Management Q A Reviewer Agency/Office/Phone and Fax Numbers Date
Morella Sanchez -King DWR/WIRO WQ/910-796-7218/
EPA Form 3560-3 (Rev 9-94) Previous editions are obsolete.
Page# 1

31
NPDES yr/mo/day
N C 002397 3 111 121 22/06/14
I17
Inspection Type
18 [j
(Cont.)
1
Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary)
Routine compliance evaluation inspection conducted with the assistance of Steven Styers. Access to
all areas of the facility requested was granted and Mr. Styers answered all questions presented; his
assistance is appreciated.
Permit compliance data reported for the facility for the past two years has been generally excellent.
Ongoing studies to reduce effluent total copper levels to below permit limitations are ongoing; efforts
are discussed in the permit section of this report. Please also note comments in the other sections of
this report.
All treatment facilities were opertional during the visit with the exception of some of the digestor
facilities undergoing maintenance. Effluent was noted to have a slight organic tint and was free of
visible solids. There was no visible foam at the outfall structure.
Page# 2

Permit: NC0023973
Inspection Date: 06/14/2022
Owner - Facility: Wilmington Southside WWTP
Inspection Type: Compliance Evaluation
Operations & Maintenance Yes No NA NE
Is the plant generally clean with acceptable housekeeping? • ❑ ❑ ❑
Does the facility analyze process control parameters, for ex: MLSS, MCRT, Settleable II ❑ El El
Solids, pH, DO, Sludge Judge, and other that are applicable?
Comment:
Permit Yes No NA NE
(If the present permit expires in 6 months or less). Has the permittee submitted a new IN❑ El ❑
application?
Is the facility as described in the permit? ❑ • El El
# Are there any special conditions for the permit? • ❑ El El
Is access to the plant site restricted to the general public? • ❑ ❑ ❑
Is the inspector granted access to all areas for inspection? • ❑ ❑ ❑
Comment: Permit renewal application submitted and being reviewed. Requested
changes/additions include changes to the system description (remove gas
chlorination/dechlorination facilties, add UV disinfection system, remove sludge alkaline
stabilization system), and request for extension of compliance deadline for effluent total
copper (currently 11/29/22 special condition A(9)). Permittee is currently conducting
an approved pilot study in an attempt to optimize chemical feed to reduce copper
levels. Permittee is also conducting studies that consider options for extending the
outfall into a deeper/higher flow section of the Cape Fear River. Conceptual plans
being devised for new plant facilities/expansion on the CFPUA property adjacent to
current facility. The current permit contains effluent limits for future expansion to 16,
20 and 24 MGD. Current facilities limited at 12 MGD and average -7 MGD
Flow Measurement - Effluent
# Is flow meter used for reporting?
Is flow meter calibrated annually?
Is the flow meter operational?
(If units are separated) Does the chart recorder match the flow meter?
Comment: Metering system in calibrated 2/year by independent contractor with records
maintained on site
Bar Screens
Type of bar screen
a.Manual
b.Mechanical
Are the bars adequately screening debris?
Is the screen free of excessive debris?
Yes No NA NE
• ❑ ❑ ❑
• ❑ ❑ ❑
• ❑ ❑ ❑
• ❑ • ❑
Yes No NA NE
•
Page# 3

Permit: NC0023973
Inspection Date: 06/14/2022
Owner - Facility: Wilmington Southside WWTP
Inspection Type: Compliance Evaluation
Bar Screens
Is disposal of screening in compliance?
Is the unit in good condition?
Comment:
Grit Removal
Type of grit removal
a.Manual
b.Mechanical
Is the grit free of excessive organic matter?
Is the grit free of excessive odor?
# Is disposal of grit in compliance?
Comment:
Primary Clarifier
Is the clarifier free of black and odorous wastewater?
Is the site free of excessive buildup of solids in center well of circular clarifier?
Are weirs level?
Is the site free of weir blockage?
Is the site free of evidence of short-circuiting?
Is scum removal adequate?
Is the site free of excessive floating sludge?
Is the drive unit operational?
Is the sludge blanket level acceptable?
Is the sludge blanket level acceptable? (Approximately'/4 of the sidewall depth)
Comment:
Secondary Clarifier
Is the clarifier free of black and odorous wastewater?
Is the site free of excessive buildup of solids in center well of circular clarifier?
Are weirs level?
Is the site free of weir blockage?
Is the site free of evidence of short-circuiting?
Is scum removal adequate?
Yes No NA NE
• ❑ ❑ ❑
• ❑ ❑ ❑
Yes No NA NE
Yes No NA NE
• ❑ ❑ ❑
• ❑ ❑ ❑
• ❑ ❑ ❑
• ❑ ❑ ❑
• ❑ ❑ ❑
• ❑ ❑ ❑
• ❑ ❑ ❑
• ❑ ❑ ❑
❑ ❑ ❑ •
❑ ❑ ❑ •
Yes No NA NE
• ❑ ❑ ❑
• ❑ ❑ ❑
❑ ❑ ❑ •
❑ ❑ ❑ •
❑ ❑ ❑ •
• ❑ ❑ ❑
Page# 4

Permit: NC0023973
Inspection Date: 06/14/2022
Owner - Facility: Wilmington Southside WWTP
Inspection Type: Compliance Evaluation
Secondary Clarifier
Is the site free of excessive floating sludge?
Is the drive unit operational?
Is the return rate acceptable (low turbulence)?
Is the overflow clear of excessive solids/pin floc?
Is the sludge blanket level acceptable? (Approximately'/4 of the sidewall depth)
Yes No NA NE
• ❑ ❑ ❑
Comment: Clarifier weirs are covered with hinged aluminum plates to prevent birds from out or
weir structures
Trickling Filter
Is the filter free of ponding?
Is the filter free of leaks at the center column of filter's distribution arms?
Is the distribution of flow even from the distribution arms?
Is the filter free of uneven or discolored growth?
Is the filter free of sloughing of excessive growth?
Are the filter's distribution arms orifices free of clogging?
Is the filter free of excessive filter flies, worms or snails?
Comment:
Yes No NA NE
• ❑ ❑ ❑
• ❑ ❑ ❑
• ❑ ❑ ❑
Filters are briefly flooded once per week to dislodge flies/larvae from the filter media
Aeration Basins Yes No NA NE
Mode of operation Ext. Air
Type of aeration system Diffused
Is the basin free of dead spots? • ❑ ❑ ❑
Are surface aerators and mixers operational? ❑ ❑ ❑ •
Are the diffusers operational? • ❑ El El
Is the foam the proper color for the treatment process? • ❑ ❑ ❑
Does the foam cover less than 25% of the basin's surface? ■ ❑ ❑ ❑
Is the DO level acceptable? ❑ ❑ ❑ •
Is the DO level acceptable?(1.0 to 3.0 mg/I) El ❑ El •
Comment:
Disinfection - UV
Are extra UV bulbs available on site?
Are UV bulbs clean?
Is UV intensity adequate?
Yes No NA NE
El El El El
El El El El
❑ ❑ ❑ ❑
Page# 5

Permit: NC0023973
Inspection Date: 06/14/2022
Owner - Facility: Wilmington Southside WWTP
Inspection Type: Compliance Evaluation
Disinfection - UV Yes No NA NE
Is transmittance at or above designed level?
Is there a backup system on site?
Is effluent clear and free of solids?
Comment:
Standby Power
Is automatically activated standby power available?
Is the generator tested by interrupting primary power source?
Is the generator tested under load?
Was generator tested & operational during the inspection?
Do the generator(s) have adequate capacity to operate the entire wastewater site?
Is there an emergency agreement with a fuel vendor for extended run on back-up
power?
Is the generator fuel level monitored?
El El El El
El El El El
El El El El
Yes No NA NE
• ❑ ❑ ❑
• ❑ ❑ ❑
• ❑ ❑ ❑
• ❑ ❑ ❑
❑ ❑ ❑ •
❑ ❑ ❑ •
Comment: New generator installed after Hurricane Florence provides power to the entire system
except for system screw lift pumps which have their own generator
Effluent Sampling Yes No NA NE
Is composite sampling flow proportional? • ❑ ❑ ❑
Is sample collected below all treatment units? • ❑ ❑ ❑
Is proper volume collected? ❑ ❑ ❑ •
Is the tubing clean? • ❑ ❑ ❑
# Is proper temperature set for sample storage (kept at less than or equal to 6.0 ■ ❑ ❑ ❑
degrees Celsius)?
Is the facility sampling performed as required by the permit (frequency, sampling type • ❑ ❑ ❑
representative)?
Comment: All compliance sampling is conducted by the CFPUA laboratory staff either on -site as
required or at the CFPUA laboratory in Ogden. All records including sample collection
chain of custody forms are kept by the laboratory staff. Site operators utilize site lab
equipment for operational/quality control only
Upstream / Downstream Sampling Yes No NA NE
Is the facility sampling performed as required by the permit (frequency, sampling type, El El El El
and sampling location)?
Comment: Permittee is contracted with the Lower Cape Fear River Program to conduct all
instream sampling
Page# 6

M'Kean Maffitt (Southside) WWTP Instream Monitoring Station B9820000
Cape Fear River (upstream)
DEQ
ArleofOomgm
oepammentor
Environmental
Uualiy
Saltwater Ammonia Calculator
Source Name: Ambient Water Quality Criteria for Ammonia (Saltwater) - 1989, EPA 440/5-88-004 April 1989
Contact: Andrea Matzke, DEQ 503-229-5384 [e-mail]
9/17/2013
Date
Temp
(deg C)
17.8
pH
(su)
Salinity
(ppt)
Pressure
(ATM)
Molal Ionic
Strength
(not valid if >I
pKa8
@ 25 deg C
Unioni
Unionized
o a
o a
as N
Chronic
Acute
0.233
Chronic
0.035
Acute
370.04
Chronic
55.59
Acute
6.3
5.0
1.0
dI1111
0.100
9.257
0.063%
mg 1
304.17
miiiiir
45.69
4/18/2018
6/27/2018
7/26/2018
12/12/2018
1/8/2019
2/19/2019
3/27/2019
4/11/2019
7/17/2019
8/27/2019
10/23/2019
11/14/2019
12/5/2019
1/28/2020
2/24/2020
3/18/2020
28.7
6.6
7.6
1.0
0.152
9.263
0.313%
0.233
0.035
74.41
11.18
61.16
9.19
27.8
6.5
5.3
1.0
0.106
9.257
0.192%
0.233
0.035
121.60
18.27
99.95
15.01
9.3
6.6
1.7
1.0
0.034
9.249
0.069%
0.233
0.035
335.29
50.37
275.61
41.40
12.3
6.6
0.5
1.0
0.010
9.246
0.087%
0.233
0.035
266.39
40.02
218.97
32.89
11.9
7.0
7.5
1.0
0.151
9.262
0.205%
0.233
0.035
113.58
17.06
93.36
14.02
12.9
7.3
1.3
1.0
0.026
9.248
0.455%
0.233
0.035
51.23
7.70
42.11
6.33
18.1
6.6
2.0
1.0
0.040
9.250
0.134%
0.233
0.035
174.29
26.18
143.27
21.52
31.4
7.1
11.3
1.0
0.228
9.271
1.074%
0.233
0.035
21.69
3.26
17.83
2.68
28.7
7.0
10.7
1.0
0.216
9.270
0.703%
0.233
0.035
33.16
4.98
27.26
4.10
21.6
7.1
13.6
1.0
0.275
9.277
0.514%
0.233
0.035
45.37
6.82
37.29
5.60
14.6
7.6
16.1
1.0
0.326
9.283
0.946%
0.233
0.035
24.63
3.70
20.24
3.04
12.8
7.2
5.0
1.0
0.100
9.257
0.352%
0.233
0.035
66.21
9.95
54.42
8.18
11.3
6.9
1.8
1.0
0.035
9.249
0.161%
0.233
0.035
144.94
21.77
119.14
17.90
10.0
6.2
0.1
1.0
0.003
9.245
0.029%
0.233
0.035
792.38
119.03
651.33
97.84
16.5
6.8
4.3
1.0
0.085
9.255
0.186%
0.233
0.035
125.48
18.85
103.14
15.49
Average 141.83 21.30
Minimum 17.83 2.68
Maximum 651.33 97.84
AMMONIA EQUATIONS: Refer to EPA criteria document listed above for saltwater criteria calculation tables (starting on pg. 27)
Gary Perlmutter, 8/8/2022

M'Kean Maffitt (Southside) WWTP
Instream Monitoring Station B9820000 Cape Fear River (upstream)
DIRECTIONS: This spreadsheet automatically calculates
acute and chronic saltwater criteria for ammonia in the form of
NH3 and NH4 as nitrogen (or Total Ammonia Nitrogen --TAN).
The user must enter site -specific information to calculate
ammonia criteria that apply at that site. The example here is
based on a temperature of 20°C, pH of 7, salinity of 10 and
pressure of 1.
Gary Perlmutter, 8/8/2022

Table 1. Project Information
Facility Name
WWTP/WTP Class
NPDES Permit
Outfall
Flow, Qw (MGD)
Receiving Stream
Stream Class
7Q10s (cfs)
7Q1Ow (cfs)
30Q2 (cfs)
QA (cfs)
1 Q10s (cfs)
CHRONIC DILUITION FACTOR =
Data Source(s)
To apply a Model IWC%: Enter
the "Flow, Qw, (MGD)" and the
"CHRONIC DILUTION FACTOR
=" values and the CHRONIC
IWC% is calculated and
displayed. The CHRONIC IWC%
is automatically applied to
calculate the parameter's
Allowable Cw values both chronic
and acute.
Saltwater RPA 95% Probablitv/95% Confidence
MAXIMUM DATA POINTS = 58
REQUIRED DATA ENTRY
Table 2. Parameters of Concern
❑ CHECK IF HQW OR ORW WQS
CFPUA - M'Kean Maffitt (Southside) WWTP
Grade IV
NC0023973
001
12.000
Cape Fear River
SC-PNA
Modeled, Chronic Dilution Factor defined
Modeled, Chronic Dilution Factor defined
Modeled, Chronic Dilution Factor defined
Modeled, Chronic Dilution Factor defined
Modeled, Chronic Dilution Factor defined
CHRONIC IWC% = 3.82
26.2000
Submitted DMRs and three PPAs
Saltwater streams are tidal resulting in all IWC % = 100%.
If an approved model is conducted then a chronic dilution
factor is determined and can be applied to a discharge to
calculate its IWC % . If a stream is classified as a SA or
ORW then its is also classified as a HQW. The appropriate
IWC % must be defined to properly calculate WQS-based
limits.
Par01
Par02
Par03
Par04
Par05
Par06
Par07
Par08
Par09
Par10
Par11
Par12
Par13
Par14
Par15
Par16
Par17
Par18
Par19
Par20
Par21
Par22
Name
WQS
Type Chronic Modifier Acute PQL Units
Arsenic
Aquatic Life
C
36
SW
69
ug/L
Arsenic
Human Health
C
10
HH
ug/L
Cadmium
Aquatic Life
NC
8.9
SW
40.2
ug/L
4 Total Phenolic Compounds
Aquatic Life
NC
300
A
10
ug/L
Chromium VI
Aquatic Life
NC
50.4
SW
1107.8
ug/L
Chromium, Total
Aquatic Life
NC
N/A
SW
N/A
ug/L
Copper
Aquatic Life
NC
3.7
SW
5.8
ug/L
Cyanide
Aquatic Life
NC
1
SW
1
10
ug/L
Lead
Aquatic Life
NC
8.5
SW
220.8
ug/L
Mercury
Aquatic Life
NC
25
SW
0.5
ng/L
Molybdenum
Human Health
NC
2.0
HH
mg/L
Nickel
Aquatic Life
NC
8.3
SW
74.7
ug/L
Selenium
Aquatic Life
NC
71
SW
ug/L
Silver
Aquatic Life
NC
0.1
SW
2.2
ug/L
Zinc
Aquatic Life
NC
85.6
SW
95.1
ug/L
Chloroform
Human Health
NC
2000
HH
pg/L
Toluene
Human Health
NC
520
HH
pg/L
Bis(2-ethylhexyl) phthalate
Human Health
C
0.37
HH
pg/L
1,4-Dioxane
Human Health
C
80
HH
pg/L
PFOA
Aquatic Life
C
49
SW
0.094
mg/L
PFOS
Aquatic Life
C
3
SW
0.0084
mg/L
NOTE: The aquatic life chronic and acute WQS for several metals are calculated based on EPA convers1
see "Diss. SW stds. As TM" for more details and summary of calculated WQS..
23973 Saltwater RPA 2022_12 MGD,input
8/8/2022

CFPUA - M'Kean Maffitt (Southside) WWTP
NC0023973
Qw (MGD) _
1Q10S (cfs) _
7Q1OS (cfs) _
7Q1OW (cfs) _
30Q2 (cfs) _
Avg. Stream Flow, QA (cfs) _
Receiving Stream
Saltwater RPA 95% Probablity/95% Confidence
MAXIMUM DATA POINTS = 58
12.00
Modeled, Chronic Dilution Factor defined
Modeled, Chronic Dilution Factor defined
Modeled, Chronic Dilution Factor defined
Modeled, Chronic Dilution Factor defined
Modeled, Chronic Dilution Factor defined
Cape Fear River
WWTP/WTP Class: Grade IV
IWC% @ 1Q10S = 4.684176834
IWC% @ 7Q1OS = 3.816793893
IWC% @ 7Q1OW = 3.816793893
IWC% @ 30Q2 = 3.816793893
IWC% @ QA = 3.816793893
Stream Class: SC-PNA
Outfall 001
Qw=12MGD
PARAMETER
TYPE
(1)
NC STANDARDS OR EPA CRITERIA
J
nCi _
(nREASONABLE
z
POTENTIAL RESULTS
Applied
Chronic Standard Acute
n # Det. Max Pred Cw Allowable Cw
RECOMMENDED ACTION
Arsenic
Arsenic
C
C
36 SW(7Q10s) 69
I 0 HH(Qavg)
ug L
ug L
16 4
1.2
Acute (SW): 1,473.0
Chronic(SW): 943.2 -
No value > Allowable ble Cw_ _ _
Chronic (HH) 262.0
No value > Allowable Cw
- - - - - - - - - - - - -
_ _ _ _ _ _ _ _ _ _ _
No RPA, Predicted Max < 50% of Allowable
Cw - No Monitoring required
Cadmium
NC
8.9 SW(7Q10s) 40.2
ug/L
16 0
0
NO DETECTS
Acute: 858.21
_ _ _ _ _ _ _
Chronic: 233.18
Max MDL = 0.5
_ _ _ _ _ _ _ _ _ _ _ _
No detects at 0.5 ug/L and lower detection limits
Total Phenolic Compounds
NC
300 A(30Q2)
10.0
ug/L
2 0
Note: n < 9
Limited data set
19.0
C.V. (default)
NO DETECTS
Acute: NO WQS
__ _ ____ _ ___
Chronic: 7,860.0
Max MDL = 10
________ ________________
No detects at 5 ug/L.
Chromium VI
NC
50.4 SW(7Q10s) 1107.8
ug/L
0 0
N/A
Acute: 23,649.8
----------------------------
Chromium, Total
NC
ug/L
16 4
3.9
Maximum reported value = 2.5
a. No Monitoring required if all Total
Chromium samples are < the Chromium VI
Allowable Cw
Copper
NC
3.7 SW(7Q10s) 5.8
ug/L
48 48
10.92
Acute: 123.82
__ _ --- _--- ___
Chronic: 96.94
No value > Allowable Cw
_ _ _ _ _ _ _ _ _ _ ---
RPA - apply Monthly Monitoring with Limit
Cyanide
NC
1 SW(7Q10s) 1
10.0
ug/L
16 0
5.0
NO DETECTS
Acute: 21.3
__ _ ____ _ ___
Chronic: 26.2
_ _ _ _ _ _ _ _ _ _ _ _ _
No detects at 10 ug/L and lower detection limits
Lead
NC
8.5 SW(7Q10s) 220.8
ug/L
15 5
0.7
Acute: 4,713.74
_ _ _ _ _
Chronic: 222.70
No value > Allowable Cw
_ _ _ _ _ _ _ _ _ _ _
No RPA, Predicted Max < 50% of Allowable
Cw - No Monitoring required
Mercury
NC
25 SW(7Q10s)
0.5
ng/L
0 0
N/A
Acute: NO WQS
_ ------_ _
--Chronic: - ---
--- ---- ---- ---- ---- ---- ----
Molybdenum
NC
2 HH(7Q10s)
mg/L
15 1
4.3
Acute: NO WQS
_ _ _ _ _ _ _
Chronic: 52.4
No value > Allowable Cw
_ _ ___ _ _ _ _ _ _ _ _ _
Max. Pred Cw based on 3 nondetects above
Allowable Cw - apply quarterly monitoring
Page 1 of 2
23973 Saltwater RPA 2022_12 MGD,rpa
8/8/2022

CFPUA - M'Kean Maffitt (Southside) WWTP
NC0023973 Saltwater RPA 95% Probablity/95% Confidence
Outfall 001
Qw = 12 MGD
Nickel
NC
8.3 SW(7Q10s) 74.7
ugL
10 16
4.1
Acute: 1594.73
_ _ _ _ _ _
Chronic: 217.46
No value > Allowable Cw
_ _ _ _ _ _ _ _ _ _
No RPA, Predicted Max < 50% of Allowable
Cw - No Monitoring required
Selenium
NC
71 SW(7Q10s)
ug/L
16 0
1.29
NO DETECTS
Acute: NO WQS
__ _ ____ _ ___
Chronic: 1860.2
Max MDL = 2
_ _ _ _ _ _ _ _ _ _ _____
No detects at < 2 ug/L and lower limits
Silver
NC
0.1 SW(7Q10s) 2.2
ug/L
19 0
0.9
NO DETECTS
Acute: 46.97
___ ________
Chronic: 2.62
Max MDL = 1
_____ __________
No detects at < 1 ug/L and lower limits
Zinc
NC
85.6 SW(7Q10s) 95.1
ug/L
16 16
21.85
Acute: 2030.2
_ _ _ _ _ _
Chronic: 2242.7
No value > Allowable Cw
_ _ _ _ _ _ _ _ _ _
No RPA, Predicted Max < 50% of Allowable
Cw - No Monitoring required
Chloroform
NC
2000 HH(7Q10s)
µg/L
2 1
Note: n < 9
Limited data set
5.0786
C.V. (default)
Acute: NO WQS
_ _ _ _ _ _
Chronic: 52400
No value > Allowable Cw
_ _ _ _ _ _ _ _ _ _ _ _ _
No RP in RPA for Limited Dataset (n<8
samples) - no monitoring required
Toluene
NC
520 HH(7Q10s)
µg/L
2 1
Note: n < 9
Limited data set
6.0261
C.V. (default)
Acute: NO WQS
__ _____
Chronic: 13624
No value > Allowable Cw
_____________
No RP in RPA for Limited Dataset (n<8
samples) - no monitoring required
Bis(2-ethylhexyl) phthalate
C
0.37 HH(Qavg)
µg/L
3 1
Note: n < 9
Limited data set
4.05
C.V. (default)
Acute: NO WQS
__ _ ____ _ ___
Chronic: 9.694
No value > Allowable Cw
____________________________
No monitoring required
1,4-Dioxane
C
80 HH(Qavg)
µg/L
1 1
Note: n < 9
Limited data set
13.702
C.V. (default)
Acute: NO WQS
_ _ _ _ _ _ _
Chronic: 2096
No value > Allowable Cw
_ _ _ _ _ _ _ _ _ _
No RPA, Predicted Max < 50% of Allowable
Cw - No Monitoring required
PFOA
C
49 SW(7Q10s) 0.094
mg/L
1 1
Note: n < 9
Limited data set
31.682
C.V. (default)
Acute: 2.006756007
__ _ ____ _ ___
Chronic: 1283.8
No value > Allowable Cw
____________________________
PFOS
C
3 SW(7Q10s) 0.0084
mg/L
0 0
N/A
Acute: 0.179327133
___ ________
Chronic: 78.6
________________
Non -detect; reporting limit not specified
0 0
N/A
Acute:
-- _ --------------------------------------
Chronic:
Page 2 of 2
23973 Saltwater RPA 2022_12 MGD,rpa
8/8/2022

Table 1. Project Information
Facility Name
WWTP/WTP Class
NPDES Permit
Outfall
Flow, Qw (MGD)
Receiving Stream
Stream Class
7Q10s (cfs)
7Q1Ow (cfs)
30Q2 (cfs)
QA (cfs)
1 Q10s (cfs)
CHRONIC DILUITION FACTOR =
Data Source(s)
To apply a Model IWC%: Enter
the "Flow, Qw, (MGD)" and the
"CHRONIC DILUTION FACTOR
=" values and the CHRONIC
IWC% is calculated and
displayed. The CHRONIC IWC%
is automatically applied to
calculate the parameter's
Allowable Cw values both chronic
and acute.
Saltwater RPA 95% Probablitv/95% Confidence
MAXIMUM DATA POINTS = 58
REQUIRED DATA ENTRY
Table 2. Parameters of Concern
❑✓ CHECK IF HQW OR ORW WQS
CFPUA - M'Kean Maffitt (Southside) WWTP
Grade IV
NC0023973
16.000
Cape Fear River
SC-PNA
Modeled, Chronic Dilution Factor defined
Modeled, Chronic Dilution Factor defined
Modeled, Chronic Dilution Factor defined
Modeled, Chronic Dilution Factor defined
CHRONIC IWC% = 4.52
22.1000
Submitted DMRs and three PPAs
Saltwater streams are tidal resulting in all IWC % = 100%.
If an approved model is conducted then a chronic dilution
factor is determined and can be applied to a discharge to
calculate its IWC % . If a stream is classified as a SA or
ORW then its is also classified as a HQW. The appropriate
IWC % must be defined to properly calculate WQS-based
limits.
Par01
Par02
Par03
Par04
Par05
Par06
Par07
Par08
Par09
Par10
Par11
Par12
Par13
Par14
Par15
Par16
Par17
Par18
Par19
Par20
Par21
Par22
Name
WQS
Type Chronic Modifier Acute PQL Units
Arsenic
Aquatic Life
C
36
SW
69
ug/L
Arsenic
Human Health
C
10
HH
ug/L
Cadmium
Aquatic Life
NC
8.9
SW
40.2
ug/L
4 Total Phenolic Compounds
Aquatic Life
NC
300
A
10
ug/L
Chromium VI
Aquatic Life
NC
50.4
SW
1107.8
ug/L
Chromium, Total
Aquatic Life
NC
N/A
SW
N/A
ug/L
Copper
Aquatic Life
NC
3.7
SW
5.8
ug/L
Cyanide
Aquatic Life
NC
1
SW
1
10
ug/L
Lead
Aquatic Life
NC
8.5
SW
220.8
ug/L
Mercury
Aquatic Life
NC
25
SW
0.5
ng/L
Molybdenum
Human Health
NC
2.0
HH
mg/L
Nickel
Aquatic Life
NC
8.3
SW
74.7
ug/L
Selenium
Aquatic Life
NC
71
SW
ug/L
Silver
Aquatic Life
NC
0.1
SW
2.2
ug/L
Zinc
Aquatic Life
NC
85.6
SW
95.1
ug/L
Chloroform
Human Health
NC
2000
HH
pg/L
Toluene
Human Health
NC
520
HH
pg/L
Bis(2-ethylhexyl) phthalate
Human Health
C
0.37
HH
pg/L
1,4-Dioxane
Human Health
C
80
HH
pg/L
NOTE: The aquatic life chronic and acute WQS for several metals are calculated based on EPA convers1
see "Diss. SW stds. As TM" for more details and summary of calculated WQS..
23973 Saltwater RPA 2022_16 MGD,input
8/8/2022

CFPUA - M'Kean Maffitt (Southside) WWTP
NC0023973
Qw (MGD) _
1Q10S (cfs) _
7Q1OS (cfs) _
7Q1OW (cfs) _
30Q2 (cfs) _
Avg. Stream Flow, QA (cfs) _
Receiving Stream
Saltwater RPA 95% Probablity/95% Confidence
MAXIMUM DATA POINTS = 58
16.00
Modeled, Chronic Dilution Factor defined
Modeled, Chronic Dilution Factor defined
Modeled, Chronic Dilution Factor defined
Modeled, Chronic Dilution Factor defined
Modeled, Chronic Dilution Factor defined
Cape Fear River
WWTP/WTP Class: Grade IV
IWC% @ 1Q10S = 5.547949505
IWC% @ 7Q1OS = 4.524886878
IWC% @ 7Q1OW = 4.524886878
IWC% @ 30Q2 = 4.524886878
IWC% @ QA = 4.524886878
Stream Class: SC-PNA
Outfall 001
Qw=16MGD
YOU HAVE DESIGNATED THIS RECEIVING
STREAM AS HQW OR ORW.
PARAMETER
TYPE
(1)
NC STANDARDS OR EPA CRITERIA
J
da
N
z
REASONABLE POTENTIAL RESULTS
Applied
Chronic Standard Acute
n # Det. Max Pred Cw Allowable Cw
RECOMMENDED ACTION
Arsenic
Arsenic
C
C
18 SW(7Q10s) 34.5
5 HI-I(Qavg)
ug L
ug L
16 4
1.2
Acute (SW): 621.9
Chronic(SW): 397.8 -
No value > Allowable Cw_ _ _
Chronic (HI3) 110.5
No value > Allowable Cw
- - - - - - - - - - - - -
_ _ _ _ _ _ _ _ _ _ _
No RPA, Predicted Max < 50% of Allowable
Cw - No Monitoring required
Cadmium
NC
4.45 SW(7Q10s) 20.1
ug L
16 0
0
NO DETECTS
Acute: 362.30
__ _ ____ _ ___
Chronic: 98.35
Max MDL = 0.5
_ _ _ _ _ _ _ _ _ _ _ _
No detects at 0.5 ug/L and lower detection limits
Total Phenolic Compounds
NC
150 A(30Q2)
10.0
ug/L
2 0
Note: n < 9
Limited data set
19.0
C.V. (default)
NO DETECTS
Acute: NO WQS
__ _ ____ _ ___
Chronic: 3,315.0
Max MDL = 10
________ ________________
No detects at 5 ug/L.
Chromium VI
NC
25.2 SW(7Q10s) 553.9
ug/L
0 0
N/A
Acute: 9,983.9
-_ --- _ _
-Chronic:-556.9 --
----------------------------
Chromium, Total
NC
ug/L
16 4
3.9
Maximum reported value = 2.5
a. No Monitoring required if all Total
Chromium samples are < the Chromium VI
Allowable Cw
Copper
NC
1.85 SW(7Q10s) 2.9
ug/L
48 48
10.92
Acute: 52.27
__ _ ____ _ ___
Chronic: 40.89
No value > Allowable Cw
_ _ _ _ _ _ _ _ _ _ ___
RPA - apply Monthly Monitoring with Limit
Cyanide
NC
0.5 SW(7Q10s) 0.5
10.0
ug/L
16 0
5.0
NO DETECTS
Acute: 9.0
___ ________
Chronic: 11.1
_____ ________
No detects at 10 ug/L and lower detection limits
Lead
NC
4.25 SW(7Q10s) 110.4
ug/L
15 5
0.7
Acute: 1,989.92
__ _ ____ _ __
Chronic: 93.93
No value > Allowable Cw
_ _ _ _ _ _ _ _ _ _ _ ___
No RPA, Predicted Max < 50% of Allowable
Cw - No Monitoring required
Mercury
NC
12.5 SW(7Q10s)
0.5
ng/L
0 0
N/A
Acute: NO WQS
-_ --- _ _
-Chronic:-276.3 --
----------------------------
Molybdenum
NC
1 HH(7Q10s)
mg/L
15 1
4.3
Acute: NO WQS
_ _ _ _ _ _ _
Chronic: 22.1
No value > Allowable Cw
_ _ ___ _ _ _ _ _ _ _ _
Max. Pred Cw based on 3 nondetects above
Allowable Cw - apply quarterly monitoring
Page 1 of 2
23973 Saltwater RPA 2022_16 MGD,rpa
8/8/2022

CFPUA - M'Kean Maffitt (Southside) WWTP
NC0023973 Saltwater RPA 95% Probablity/95% Confidence
Outfall 001
Qw=16MGD
Nickel
NC
4.15 SW(7Q10s) 37.35
ug/L
16 16
4.1
Acute: 673.22
_ _ _ _ _ _
Chronic: 91.72
No value > Allowable Cw
_ _ _ _ _ _ _ _ _ _ _ _
No RPA, Predicted Max > 50% of Allowable
Cw - apply Quarterly Monitoring
Selenium
NC
35.5 SW(7Q10s)
ug/L
16 0
1.29
NO DETECTS
Acute: NO WQS
__ _ ____ _ ___
Chronic: 784.6
Max MDL = 2
_ _ _ _ _ _ _ _ _ _ _____
No detects at < 2 ug/L and lower limits
Silver
NC
0.05 SW(7Q10s) 1.1
ug/L
19 0
0.9
NO DETECTS
Acute: 19.83
___ ________
Chronic: 1.11
Max MDL = 1
_____ __________
No detects at < 1 ug/L and lower limits
Zinc
NC
42.8 SW(7Q10s) 47.55
ug/L
16 16
21.85
Acute: 857.1
__ ____
Chronic: 945.9
No value > Allowable Cw
_____ ______
No RPA, Predicted Max > 50% of Allowable
Cw - apply Quarterly Monitoring
Chloroform
NC
1000 HH(7Q10s)
µg/L
2 1
Note: n < 9
Limited data set
5.0786
C.V. (default)
Acute: NO WQS
_ _ _ _ _ _
Chronic: 22100
No value > Allowable Cw
_ _ _ _ _ _ _ _ _ _ _ _ _
No RP in RPA for Limited Dataset (n<8
samples) - no monitoring required
Toluene
NC
260 HH(7Q10s)
µg/L
2 1
Note: n < 9
Limited data set
6.0261
C.V. (default)
Acute: NO WQS
__ _____
Chronic: 5746
No value > Allowable Cw
_____________
No RP in RPA for Limited Dataset (n<8
samples) - no monitoring required
Bis(2-ethylhexyl) phthalate
C
0.185 HH(Qavg)
µg/L
3 1
Note: n < 9
Limited data set
4.05
C.V. (default)
Acute: NO WQS
_ _ _ _ _ _ _
Chronic: 4.0885
No value > Allowable Cw
_ _ _ _ _ _ _ _ _ _ _ _
—A-
RPA for Limited Dataset (n<g samples) apply
Quarterly Monitoring
1,4-Dioxane
C
40 HH(Qavg)
µg/L
1 1
Note: n < 9
Limited data set
13.702
C.V. (default)
Acute: NO WQS
_ _ _ _ _ _ _
Chronic: 884
No value > Allowable Cw
_ _ _ _ _ _ _ _ _ _ _
No RPA, Predicted Max < 50% of Allowable
Cw - No Monitoring required
0 0
N/A
Acute:
-- _ --------------------------------------
Chronic:
0 0
N/A
Acute:
-_
—Chronic: _ --------------------------------------
0 0
N/A
Acute:
_ _
--Chronic: --- ---- ----
---- ---- ---- ---- ---- ---- ----
Page 2 of 2
23973 Saltwater RPA 2022_16 MGD,rpa
8/8/2022

Table 1. Project Information
Facility Name
WWTP/WTP Class
NPDES Permit
Outfall
Flow, Qw (MGD)
Receiving Stream
Stream Class
7Q10s (cfs)
7Q1Ow (cfs)
30Q2 (cfs)
QA (cfs)
1 Q1 Os (cfs)
CHRONIC DILUITION FACTOR =
Data Source(s)
To apply a Model IWC%: Enter
the "Flow, Qw, (MGD)" and the
"CHRONIC DILUTION FACTOR
=" values and the CHRONIC
IWC% is calculated and
displayed. The CHRONIC IWC%
is automatically applied to
calculate the parameter's
Allowable Cw values both chronic
and acute.
Saltwater RPA 95% Probablitv/95% Confidence
MAXIMUM DATA POINTS = 58
REQUIRED DATA ENTRY
Table 2. Parameters of Concern
❑✓ CHECK IF HQW OR ORW WQS
CFPUA - M'Kean Maffitt (Southside) WWTP
Grade IV
NC0023973
20.000
Cape Fear River
SC-PNA
Modeled, Chronic Dilution Factor defined
Modeled, Chronic Dilution Factor defined
Modeled, Chronic Dilution Factor defined
Modeled, Chronic Dilution Factor defined
CHRONIC IWC% = 5.13
19.5000
Submitted DMRs and three PPAs
Saltwater streams are tidal resulting in all IWC % = 100%.
If an approved model is conducted then a chronic dilution
factor is determined and can be applied to a discharge to
calculate its IWC % . If a stream is classified as a SA or
ORW then its is also classified as a HQW. The appropriate
IWC % must be defined to properly calculate WQS-based
limits.
Par01
Par02
Par03
Par04
Par05
Par06
Par07
Par08
Par09
Par10
Par11
Par12
Par13
Par14
Par15
Par16
Par17
Par18
Par19
Par20
Par21
Par22
Name
WQS
Type Chronic Modifier Acute PQL Units
Arsenic
Aquatic Life
C
36
SW
69
ug/L
Arsenic
Human Health
C
10
HH
ug/L
Cadmium
Aquatic Life
NC
8.9
SW
40.2
ug/L
4 Total Phenolic Compounds
Aquatic Life
NC
300
A
10
ug/L
Chromium VI
Aquatic Life
NC
50.4
SW
1107.8
ug/L
Chromium, Total
Aquatic Life
NC
N/A
SW
N/A
ug/L
Copper
Aquatic Life
NC
3.7
SW
5.8
ug/L
Cyanide
Aquatic Life
NC
1
SW
1
10
ug/L
Lead
Aquatic Life
NC
8.5
SW
220.8
ug/L
Mercury
Aquatic Life
NC
25
SW
0.5
ng/L
Molybdenum
Human Health
NC
2.0
HH
mg/L
Nickel
Aquatic Life
NC
8.3
SW
74.7
ug/L
Selenium
Aquatic Life
NC
71
SW
ug/L
Silver
Aquatic Life
NC
0.1
SW
2.2
ug/L
Zinc
Aquatic Life
NC
85.6
SW
95.1
ug/L
Chloroform
Human Health
NC
2000
HH
pg/L
Toluene
Human Health
NC
520
HH
pg/L
Bis(2-ethylhexyl) phthalate
Human Health
C
0.37
HH
pg/L
1,4-Dioxane
Human Health
C
80
HH
pg/L
NOTE: The aquatic life chronic and acute WQS for several metals are calculated based on EPA convers1
see "Diss. SW stds. As TM" for more details and summary of calculated WQS..
23973 Saltwater RPA 2022_20 MGD,input
8/8/2022

CFPUA - M'Kean Maffitt (Southside) WWTP
NC0023973
Qw (MGD) _
1Q10S (cfs) _
7Q1OS (cfs) _
7Q1OW (cfs) _
30Q2 (cfs) _
Avg. Stream Flow, QA (cfs) _
Receiving Stream
Saltwater RPA 95% Probablity/95% Confidence
MAXIMUM DATA POINTS = 58
20.00
Modeled, Chronic Dilution Factor defined
Modeled, Chronic Dilution Factor defined
Modeled, Chronic Dilution Factor defined
Modeled, Chronic Dilution Factor defined
Modeled, Chronic Dilution Factor defined
Cape Fear River
WWTP/WTP Class: Grade IV
IWC% @ 1Q10S = 6.282481407
IWC% @ 7Q1OS = 5.128205128
IWC% @ 7Q1OW = 5.128205128
IWC% @ 30Q2 = 5.128205128
IWC% @ QA = 5.128205128
Stream Class: SC-PNA
Outfall 001
Qw = 20 MGD
YOU HAVE DESIGNATED THIS RECEIVING
STREAM AS HQW OR ORW.
PARAMETER
TYPE
(1)
NC STANDARDS OR EPA CRITERIA
J
da
(nREASONABLE
z
POTENTIAL RESULTS
Applied
Chronic Standard Acute
n # Det. Max Pred Cw Allowable Cw
RECOMMENDED ACTION
Arsenic
Arsenic
C
C
18 SW(7Q10s) 34.5
5 HH(Qavg)
ug L
ug L
16 4
1.2
Acute (SW): 549.1
Chronic(SW): 351.0 -
No value > Allowable Cw_ _ _
Chronic (HH):97.5
No value > Allowable Cw
- - - - - - - - - - - - -
_ _ _ _ _ _ _ _ _ _ _
No RPA, Predicted Max < 50% of Allowable
Cw - No Monitoring required
Cadmium
NC
4.45 SW(7Q10s) 20.1
ug L
16 0
0
NO DETECTS
Acute: 319.94
__ _ ____ _ ___
Chronic: 86.78
Max MDL = 0.5
_ _ _ _ _ _ _ _ _ _ _ _
No detects at 0.5 ug/L and lower detection limits
Total Phenolic Compounds
NC
150 A(30Q2)
10.0
ug/L
2 0
Note: n < 9
Limited data set
19.0
C.V. (default)
NO DETECTS
Acute: NO WQS
__ _ ____ _ ___
Chronic: 2,925.0
Max MDL = 10
________ ________________
No detects at 5 ug/L.
Chromium VI
NC
25.2 SW(7Q10s) 553.9
ug/L
0 0
N/A
Acute: 8,816.6
-_ --- _ _
-Chronic:-491.4 --
----------------------------
Chromium, Total
NC
ug/L
16 4
3.9
Maximum reported value = 2.5
a. No Monitoring required if all Total
Chromium samples are < the Chromium VI
Allowable Cw
Copper
NC
1.85 SW(7Q10s) 2.9
ug/L
48 48
10.92
Acute: 46.16
__ _ ____ _ ___
Chronic: 36.08
No value > Allowable Cw
_ _ _ _ _ _ _ _ _ _ ___
RPA - apply Monthly Monitoring with Limit
Cyanide
NC
0.5 SW(7Q10s) 0.5
10.0
ug/L
16 0
5.0
NO DETECTS
Acute: 8.0
__ _ --- _--- ___
Chronic: 9.8
_ _ _ _ _ _ _ _ _ _ _ ---
No detects at 10 ug/L and lower detection limits
Lead
NC
4.25 SW(7Q10s) 110.4
ug/L
15 5
0.7
Acute: 1,757.27
__ _ ____ _ __
Chronic: 82.88
No value > Allowable Cw
_ _ _ _ _ _ _ _ _ _ _ ___
No RPA, Predicted Max < 50% of Allowable
Cw - No Monitoring required
Mercury
NC
12.5 SW(7Q10s)
0.5
ng/L
0 0
N/A
Acute: NO WQS
-_ --- _ _
-Chronic:-243.8 --
----------------------------
Molybdenum
NC
1 HH(7Q10s)
mg/L
15 1
4.3_
Acute: NO WQS
Chronic: 19.5
No value > Allowable Cw
Max. Pred.Cw based on 3 nondetects above
Allowable Cw - apply quarterly monitoring
Page 1 of 2
23973 Saltwater RPA 2022_20 MGD,rpa
8/8/2022

CFPUA - M'Kean Maffitt (Southside) WWTP
NC0023973 Saltwater RPA 95% Probablity/95% Confidence
Outfall 001
Qw = 20 MGD
Nickel
NC
4.15 SW(7Q10s) 37.35
ug/L
10 16
4.1
Acute: 594.51
_ _ _ _ _ _ _
Chronic: 80.93
No value > Allowable Cw
_ _ _ _ _ _ _ _ _ _ _
No RPA, Predicted Max > 50% of Allowable
Cw - apply Quarterly Monitoring
Selenium
NC
35.5 SW(7Q10s)
ug/L
16 0
1.29
NO DETECTS
Acute: NO WQS
__ _ ____ _ ___
Chronic: 692.3
Max MDL = 2
_ _ _ _ _ _ _ _ _ _ _____
No detects at < 2 ug/L and lower limits
Silver
NC
0.05 SW(7Q10s) 1.1
ug/L
19 0
0.9
NO DETECTS
Acute: 17.51
___ ________
Chronic: 0.98
Max MDL = 1
_____ __________
No detects at < 1 ug/L and lower limits
Zinc
NC
42.8 SW(7Q10s) 47.55
ug/L
16 16
21.85
Acute: 756.9
__ _____
Chronic: 834.E
No value > Allowable Cw
_____ ______
No RPA, Predicted Max > 50% of Allowable
Cw - apply Quarterly Monitoring
Chloroform
NC
1000 HH(7Q10s)
µg/L
2 1
Note: n < 9
Limited data set
5.0786
C.V. (default)
Acute: NO WQS
_ _ _ _ _ _ _
Chronic: 19500
No value > Allowable Cw
_ _ _ _ _ _ _ _ _ _ _ _ _
No RP in RPA for Limited Dataset (n<8
samples) - no monitoring required
Toluene
NC
260 HH(7Q10s)
µg/L
2 1
Note: n < 9
Limited data set
6.0261
C.V. (default)
Acute: NO WQS
__ _____
Chronic: 5070
No value > Allowable Cw
_____________
No RP in RPA for Limited Dataset (n<8
samples) - no monitoring required
Bis(2-ethylhexyl) phthalate
C
0.185 HH(Qavg)
µg/L
3 1
Note: n < 9
Limited data set
4.05
C.V. (default)
Acute: NO WQS
_ _ _ _ _ _ _
Chronic: 3.6075
No value > Allowable Cw
_ _ _ _ _ _ _ _ _ _ _ _
—A-
RPA for Limited Dataset (n<g samples) apply
Quarterly Monitoring
1,4-Dioxane
C
40 HH(Qavg)
µg/L
1 1
Note: n < 9
Limited data set
13.702
C.V. (default)
Acute: NO WQS
_ _ _ _ _ _ _
Chronic: 780
No value > Allowable Cw
_ _ _ _ _ _ _ _ _ _ _
No RPA, Predicted Max < 50% of Allowable
Cw - No Monitoring required
0 0
N/A
Acute:
-- _ --------------------------------------
Chronic:
0 0
N/A
Acute:
-_
—Chronic: _ --------------------------------------
0 0
N/A
Acute:
_ _
--Chronic: --- ---- ----
---- ---- ---- ---- ---- ---- ----
Page 2 of 2
23973 Saltwater RPA 2022_20 MGD,rpa
8/8/2022

Table 1. Project Information
Facility Name
WWTP/WTP Class
NPDES Permit
Outfall
Flow, Qw (MGD)
Receiving Stream
Stream Class
7Q10s (cfs)
7Q1Ow (cfs)
30Q2 (cfs)
QA (cfs)
1 Q10s (cfs)
CHRONIC DILUITION FACTOR =
Data Source(s)
To apply a Model IWC%: Enter
the "Flow, Qw, (MGD)" and the
"CHRONIC DILUTION FACTOR
=" values and the CHRONIC
IWC% is calculated and
displayed. The CHRONIC IWC%
is automatically applied to
calculate the parameter's
Allowable Cw values both chronic
and acute.
Saltwater RPA 95% Probablitv/95% Confidence
MAXIMUM DATA POINTS = 58
REQUIRED DATA ENTRY
Table 2. Parameters of Concern
❑✓ CHECK IF HQW OR ORW WQS
CFPUA - M'Kean Maffitt (Southside) WWTP
Grade IV
NC0023973
24.000
Cape Fear River
SC-PNA
Modeled, Chronic Dilution Factor defined
Modeled, Chronic Dilution Factor defined
Modeled, Chronic Dilution Factor defined
Modeled, Chronic Dilution Factor defined
CHRONIC IWC% = 5.68
17.6000
Submitted DMRs and three PPAs
Saltwater streams are tidal resulting in all IWC % = 100%.
If an approved model is conducted then a chronic dilution
factor is determined and can be applied to a discharge to
calculate its IWC % . If a stream is classified as a SA or
ORW then its is also classified as a HQW. The appropriate
IWC % must be defined to properly calculate WQS-based
limits.
Par01
Par02
Par03
Par04
Par05
Par06
Par07
Par08
Par09
Par10
Par11
Par12
Par13
Par14
Par15
Par16
Par17
Par18
Par19
Par20
Par21
Par22
Name
WQS
Type Chronic Modifier Acute PQL Units
Arsenic
Aquatic Life
C
36
SW
69
ug/L
Arsenic
Human Health
C
10
HH
ug/L
Cadmium
Aquatic Life
NC
8.9
SW
40.2
ug/L
4 Total Phenolic Compounds
Aquatic Life
NC
300
A
10
ug/L
Chromium VI
Aquatic Life
NC
50.4
SW
1107.8
ug/L
Chromium, Total
Aquatic Life
NC
N/A
SW
N/A
ug/L
Copper
Aquatic Life
NC
3.7
SW
5.8
ug/L
Cyanide
Aquatic Life
NC
1
SW
1
10
ug/L
Lead
Aquatic Life
NC
8.5
SW
220.8
ug/L
Mercury
Aquatic Life
NC
25
SW
0.5
ng/L
Molybdenum
Human Health
NC
2.0
HH
mg/L
Nickel
Aquatic Life
NC
8.3
SW
74.7
ug/L
Selenium
Aquatic Life
NC
71
SW
ug/L
Silver
Aquatic Life
NC
0.1
SW
2.2
ug/L
Zinc
Aquatic Life
NC
85.6
SW
95.1
ug/L
Chloroform
Human Health
NC
2000
HH
pg/L
Toluene
Human Health
NC
520
HH
pg/L
Bis(2-ethylhexyl) phthalate
Human Health
C
0.37
HH
pg/L
1,4-Dioxane
Human Health
C
80
HH
pg/L
NOTE: The aquatic life chronic and acute WQS for several metals are calculated based on EPA convers1
see "Diss. SW stds. As TM" for more details and summary of calculated WQS..
23973 Saltwater RPA 2022_24 MGD,input
8/8/2022

CFPUA - M'Kean Maffitt (Southside) WWTP
NC0023973
Qw (MGD) _
1Q10S (cfs) _
7Q1OS (cfs) _
7Q1OW (cfs) _
30Q2 (cfs) _
Avg. Stream Flow, QA (cfs) _
Receiving Stream
Saltwater RPA 95% Probablity/95% Confidence
MAXIMUM DATA POINTS = 58
24.00
Modeled, Chronic Dilution Factor defined
Modeled, Chronic Dilution Factor defined
Modeled, Chronic Dilution Factor defined
Modeled, Chronic Dilution Factor defined
Modeled, Chronic Dilution Factor defined
Cape Fear River
WWTP/WTP Class: Grade IV
IWC% @ 1Q10S = 6.954922523
IWC% @ 7Q1OS = 5.681818182
IWC% @ 7Q1OW = 5.681818182
IWC% @ 30Q2 = 5.681818182
IWC%@QA= 5.681818182
Stream Class: SC-PNA
Outfall 001
Qw=24MGD
YOU HAVE DESIGNATED THIS RECEIVING
STREAM AS HQW OR ORW.
PARAMETER
TYPE
(1)
NC STANDARDS OR EPA CRITERIA
J
da
(nREASONABLE
z
POTENTIAL RESULTS
Applied
Chronic Standard Acute
n # Det. Max Pred Cw Allowable Cw
RECOMMENDED ACTION
Arsenic
Arsenic
C
C
18 SW(7Q10s) 34.5
5 HH(Qavg)
ug L
ug L
16 4
1.2
Acute (SW): 496.1
Chronic(SW): 316.8 -
No value > Allowable Cw_ _ _
Chronic (HH):88.0
No value > Allowable Cw
- - - - - - - - - - - - -
_ _ _ _ _ _ _ _ _ _ _
No RPA, Predicted Max < 50% of Allowable
Cw - No Monitoring required
Cadmium
NC
4.45 SW(7Q10s) 20.1
ug L
16 0
0
NO DETECTS
Acute: 289.00
__ _ ____ _ ___
Chronic: 78.32
Max MDL = 0.5
_ _ _ _ _ _ _ _ _ _ _ _
No detects at 0.5 ug/L and lower detection limits
Total Phenolic Compounds
NC
150 A(30Q2)
10.0
ug/L
2 0
Note: n < 9
Limited data set
19.0
C.V. (default)
NO DETECTS
Acute: NO WQS
__ _ ____ _ ___
Chronic: 2,640.0
Max MDL = 10
________ ________________
No detects at 5 ug/L.
Chromium VI
NC
25.2 SW(7Q10s) 553.9
ug/L
0 0
N/A
Acute: 7,964.1
-_ --- _ _
-Chronic:-443.5 --
----------------------------
Chromium, Total
NC
ug/L
16 4
3.9
Maximum reported value = 2.5
a. No Monitoring required if all Total
Chromium samples are < the Chromium VI
Allowable Cw
Copper
NC
1.85 SW(7Q10s) 2.9
ug/L
48 48
10.92
Acute: 41.70
__ _ ____ _ ___
Chronic: 32.56
No value > Allowable Cw
_ _ _ _ _ _ _ _ _ _ ___
RPA - apply Monthly Monitoring with Limit
Cyanide
NC
0.5 SW(7Q10s) 0.5
10.0
ug/L
16 0
5.0
NO DETECTS
Acute: 7.2
__ _ --- _--- ___
Chronic: 8.8
_ _ _ _ _ _ _ _ _ _ _ ---
No detects at 10 ug/L and lower detection limits
Lead
NC
4.25 SW(7Q10s) 110.4
ug/L
15 5
0.7
Acute: 1,587.36
__ _ ____ _ __
Chronic: 74.80
No value > Allowable Cw
_ _ _ _ _ _ _ _ _ _ _ ___
No RPA, Predicted Max < 50% of Allowable
Cw - No Monitoring required
Mercury
NC
12.5 SW(7Q10s)
0.5
ng/L
0 0
N/A
Acute: NO WQS
-_ --- _ _
-Chronic:-220.0 --
----------------------------
Molybdenum
NC
1 HH(7Q10s)
mg/L
15 1
4.3_
Acute: NO WQS
Chronic: 17.6
No value > Allowable Cw
Max. Pred.Cw based on 3 nondetects above
Allowable Cw - apply quarterly monitoring
Page 1 of 2
23973 Saltwater RPA 2022_24 MGD,rpa
8/8/2022

CFPUA - M'Kean Maffitt (Southside) WWTP
NC0023973 Saltwater RPA 95% Probablity/95% Confidence
Outfall 001
Qw = 24 MGD
Nickel
NC
4.15 SW(7Q10s) 37.35
ug/L
16 16
4.1
Acute: 537.03
_ _ _ _ _ _ _
Chronic: 73.04
No value > Allowable Cw
_ _ _ _ _ _ _ _ _ _ _
No RPA, Predicted Max > 50% of Allowable
Cw - apply Quarterly Monitoring
Selenium
NC
35.5 SW(7Q10s)
ug/L
16 0
1.29
NO DETECTS
Acute: NO WQS
__ _ ____ _ ___
Chronic: 624.8
Max MDL = 2
_ _ _ _ _ _ _ _ _ _ _____
No detects at < 2 ug/L and lower limits
Silver
NC
0.05 SW(7Q10s) 1.1
ug/L
19 0
0.9
NO DETECTS
Acute: 15.82
___ ________
Chronic: 0.88
Max MDL = 1
_____ __________
No detects at < 1 ug/L and lower limits
Zinc
NC
42.8 SW(7Q10s) 47.55
ug/L
16 16
21.85
Acute: 683.7
__ ____
Chronic: 753.3
No value > Allowable Cw
_____ ______
No RPA, Predicted Max > 50% of Allowable
Cw - apply Quarterly Monitoring
Chloroform
NC
1000 HH(7Q10s)
µg/L
2 1
Note: n < 9
Limited data set
5.0786
C.V. (default)
Acute: NO WQS
_ _ _ _ _ _ _
Chronic: 17600
No value > Allowable Cw
_ _ _ _ _ _ _ _ _ _ _ _ _
No RP in RPA for Limited Dataset (n<8
samples) - no monitoring required
Toluene
NC
260 HH(7Q10s)
µg/L
2 1
Note: n < 9
Limited data set
6.0261
C.V. (default)
Acute: NO WQS
__ _____
Chronic: 4576
No value > Allowable Cw
_____________
No RP in RPA for Limited Dataset (n<8
samples) - no monitoring required
Bis(2-ethylhexyl) phthalate
C
0.185 HH(Qavg)
µg/L
3 1
Note: n < 9
Limited data set
4.05
C.V. (default)
Acute: NO WQS
_ _ _ _ _ _ _
Chronic: 3.256
No value > Allowable Cw
_ _ _ _ _ _ _ _ _ _ _ _
—A-
RPA for Limited Dataset (n<g samples) apply
Quarterly Monitoring
1,4-Dioxane
C
40 HH(Qavg)
µg/L
1 1
Note: n < 9
Limited data set
13.702
C.V. (default)
Acute: NO WQS
_ _ _ _ _ _ _
Chronic: 704
No value > Allowable Cw
_ _ _ _ _ _ _ _ _ _ _
No RPA, Predicted Max < 50% of Allowable
Cw - No Monitoring required
0 0
N/A
Acute:
-- _ --------------------------------------
Chronic:
0 0
N/A
Acute:
-_
—Chronic: _ --------------------------------------
0 0
N/A
Acute:
_ _
--Chronic: --- ---- ----
---- ---- ---- ---- ---- ---- ----
Page 2 of 2
23973 Saltwater RPA 2022_24 MGD,rpa
8/8/2022

REASONABLE POTENTIAL ANALYSIS - DATA
Arsenic
Values" then "COPY"
. Maximum data
points = 58
Cadmium
Date Data BDL=1/2DL Results Date Data BDL=1/2DL Results
1 6/5/2018 < 2 1 Std Dev. 0.1282 1 6/5/2018 < 0.5 0.25 Std Dev. 0.0910
2 9/11/2018 < 1 0.5 Mean 0.5544 2 9/11/2018 < 0.1 0.05 Mean 0.0975
3 12/4/2018 < 1 0.5 C.V. 0.2312 3 12/4/2018 < 0.1 0.05 C.V. 0.9337
4 3/5/2019 < 1 0.5 n 16 4 3/5/2019 < 0.1 0.05 n 16
5 6/4/2019 < 1 0.5 5 6/4/2019 < 0.1 0.05
6 9/10/2019 < 1 0.5 Mult Factor = 1.1700 6 9/10/2019 < 0.1 0.05 Mult Factor = 1.7300
7 12/3/2019 < 1 0.5 Max. Value 1.0 ug/L 7 12/3/2019 < 0.1 0.05 Max. Value 0.25 ug/L
8 3/3/2020 < 1 0.5 Max. Pred Cw 1.2 ug/L 8 3/3/2020 < 0.1 0.05 Max. Pred Cw 0.43 ug/L
9 6/2/2020 < 1 0.5 9 6/2/2020 < 0.1 0.05
10 9/15/2020 0.58 0.58 10 9/15/2020 < 0.08 0.04
11 12/8/2020 0.52 0.52 11 12/8/2020 < 0.08 0.04
12 3/2/2021 0.62 0.62 12 3/2/2021 < 0.08 0.04
13 6/8/2021 0.65 0.65 13 6/8/2021 < 0.08 0.04
14 9/14/2021 < 1 0.5 14 9/14/2021 < 0.5 0.25
15 12/7/2021 < 1 0.5 15 12/7/2021 < 0.5 0.25
16 3/8/2022 < 1 0.5 16 3/8/2022 < 0.5 0.25
17 17
18 18
19 19
20 20
21 21
22 22
23 23
24 24
25 25
26 26
27 27
28 28
29 29
30 30
31 31
32 32
33 33
34 34
35 35
36 36
37 37
38 38
39 39
40 40
41 41
42 42
43 43
44 44
45 45
46 46
47 47
48 48
49 49
50 50
51 51
52 52
53 53
54 54
55 55
56 56
57 57
58 58
Values" then "COPY"
. Maximum data
points = 58
23973 Saltwater RPA 2022 12 MGD,data
Date}

REASONABLE POTENTIAL ANALYSIS - DATA
Total Phenolic Compounds
Date Data BDL=1/2DL Results
1 9/14/2020 < 5 5 Std Dev. 0.0000
2 6/7/2021 < 5 5 Mean 5.0000
3 C.V. (default) 0.6000
4 n 2
5
6 Mult Factor = 3.7900
7 Max. Value 5.0 ug/L
8 Max. Pred Cw 19.0 ug/L
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
Values" then "COPY"
. Maximum data
points = 58
Chromium VI
Date Data BDL=1/2DL Results
1 Std Dev. NO DATA
2 Mean NO DATA
3 C.V. NO DATA
4 n 0.0
5
6 Mult Factor = N/A
7 Max. Value N/A ug/L
8 Max. Pred Cw N/A ug/L
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
Values" then "COPY" .
Maximum data points =
58
23973 Saltwater RPA 2022_12 MGD,data
Date}

REASONABLE POTENTIAL ANALYSIS - DATA
Chromium, Total
Date Data BDL=1/2DL Results
1 6/5/2018 < 5 2.5 Std Dev. 0.5009
2 9/11/2018 < 1 0.5 Mean 0.7013
3 12/4/2018 < 1 0.5 C.V. 0.7143
4 3/5/2019 < 1 0.5 n 16
5 6/4/2019 < 1 0.5
6 9/10/2019 < 1 0.5 Mult Factor = 1.5600
7 12/3/2019 < 1 0.5 Max. Value 2.5 ug/L
8 3/3/2020 < 1 0.5 Max. Pred Cw 3.9 ug/L
9 6/2/2020 < 1 0.5
10 9/15/2020 0.74 0.74
11 12/8/2020 0.96 0.96
12 3/2/2021 0.7 0.7
13 6/8/2021 0.82 0.82
14 9/14/2021 < 1 0.5
15 12/7/2021 < 1 0.5
16 3/8/2022 < 1 0.5
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
Values" then "COPY"
. Maximum data
points = 58
Copper
Date Data BDL=1/2DL Results
1 6/2/2021 8.5 8.5 Std Dev. 1.5698
2 6/8/2021 6.6 6.6 Mean 5.5881
3 6/16/2021 6 6 C.V. 0.2809
4 6/23/2021 5.4 5.4 n 48
5 6/30/2021 5.1 5.1
6 7/7/2021 4.56 4.56 Mult Factor = 1.0300
7 7/13/2021 4.67 4.67 Max. Value 10.60 ug/L
8 7/21/2021 5.04 5.04 Max. Pred Cw 10.92 ug/L
9 7/28/2021 4.84 4.84
10 8/3/2021 6.9 6.9
11 8/11/2021 3.42 3.42
12 8/18/2021 5.25 5.25
13 8/25/2021 3.6 3.6
14 9/1/2021 4.4 4.4
15 9/7/2021 3.91 3.91
16 9/14/2021 4.04 4.04
17 9/21/2021 3.77 3.77
18 9/28/2021 3.86 3.86
19 10/5/2021 4.2 4.2
20 10/12/2021 5.45 5.45
21 10/19/2021 4.58 4.58
22 10/26/2021 5.24 5.24
23 11/2/2021 4.36 4.36
24 11/9/2021 4.85 4.85
25 11/16/2021 5.8 5.8
26 11/23/2021 6.33 6.33
27 11/30/2021 6.19 6.19
28 12/7/2021 5.2 5.2
29 12/14/2021 6.45 6.45
30 12/21/2021 10.1 10.1
31 12/28/2021 5.85 5.85
32 1/4/2022 4.96 4.96
33 1/11/2022 6.48 6.48
34 1/18/2022 5.85 5.85
35 1/25/2022 7.76 7.76
36 2/1/2022 10.6 10.6
37 2/8/2022 6.39 6.39
38 2/15/2022 8.83 8.83
39 2/22/2022 6.06 6.06
40 3/1/2022 6.34 6.34
41 3/8/2022 4.72 4.72
42 3/15/2022 3.75 3.75
43 3/22/2022 3.95 3.95
44 3/29/2022 5.73 5.73
45 4/5/2022 4.4 4.4
46 4/12/2022 5.47 5.47
47 4/19/2022 6.51 6.51
48 4/26/2022 5.97 5.97
49
50
51
52
53
54
55
56
57
58
Values" then "COPY"
. Maximum data
points = 58
23973 Saltwater RPA 2022 12 MGD,data
Date}

REASONABLE POTENTIAL ANALYSIS - DATA
Cyanide
Date Data BDL=1/2DL Results
1 6/4/2018 < 8 5 Std Dev. 0.0000
2 9/10/2018 < 8 5 Mean 5.0000
3 12/3/2018 < 8 5 C.V. 0.0000
4 3/4/2019 < 5 5 n 16
5 6/3/2019 < 8 5
6 9/9/2019 < 8 5 Mult Factor = 1.0000
7 12/2/2019 < 8 5 Max. Value 5.0 ug/L
8 3/2/2020 < 8 5 Max. Pred Cw 5.0 ug/L
9 6/1/2020 < 8 5
10 9/14/2020 < 5 5
11 12/7/2020 < 8 5
12 3/1/2021 < 8 5
13 6/7/2021 < 5 5
14 9/13/2021 < 10 5
15 12/6/2021 < 10 5
16 3/7/2022 < 10 5
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
Values" then "COPY"
. Maximum data
points = 58
Lead
Date Data BDL=1/2DL Results
1 Std Dev. 0.1741
2 9/11/2018 < 1 0.5 Mean 0.3489
3 12/4/2018 < 1 0.5 C.V. 0.4990
4 3/5/2019 < 1 0.5 n 15
5 6/4/2019 < 1 0.5
6 9/10/2019 < 1 0.5 Mult Factor = 1.41
7 12/3/2019 < 1 0.5 Max. Value 0.50 ug/L
8 3/3/2020 < 1 0.5 Max. Pred Cw 0.71 ug/L
9 6/2/2020 < 1 0.5
10 9/15/2020 0.14 0.14
11 12/8/2020 0.18 0.18
12 3/2/2021 0.21 0.21
13 6/8/2021 0.19 0.19
14 9/14/2021 0.314 0.314
15 12/7/2021 < 0.2 0.1
16 3/8/2022 < 0.2 0.1
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
Values" then "COPY"
. Maximum data
points = 58
23973 Saltwater RPA 2022_12 MGD,data
Date}

REASONABLE POTENTIAL ANALYSIS - DATA
Mercury
Date Data BDL=1/2DL Results
1 Std Dev. NO DATA
2 Mean NO DATA
3 C.V. NO DATA
4 n 0
5
6 Mult Factor = N/A
7 Max. Value N/A ng/L
8 Max. Pred Cw N/A ng/L
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
Values" then "COPY"
. Maximum data
points = 58
Molybdenum
Date Data BDL=1/2DL Results
1 Std Dev. 0.5559
2 9/11/2018 < 1 0.5 Mean 0.6627
3 12/4/2018 < 1 0.5 C.V. 0.8389
4 3/5/2019 < 1 0.5 n 15
5 6/4/2019 < 1 0.5
6 9/10/2019 < 1 0.5 Mult Factor = 1.7100
7 12/3/2019 < 1 0.5 Max. Value 2.5 mg/L
8 3/3/2020 < 1 0.5 Max. Pred Cw 4.3 mg/L
9 6/2/2020 < 1 0.5
10 9/15/2020 < 0.5 0.25
11 12/8/2020 < 0.5 0.25
12 3/2/2021 < 0.5 0.25
13 6/8/2021 0.69 0.69
14 9/14/2021 < 5 2.5
15 12/7/2021 < 2 1
16 3/8/2022 < 2 1
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
Values" then "COPY"
. Maximum data
points = 58
23973 Saltwater RPA 2022_12 MGD,data
Date}

REASONABLE POTENTIAL ANALYSIS - DATA
Nickel
Date Data BDL=1/2DL Results
1 6/5/2018 2 2 Std Dev. 0.5171
2 9/11/2018 1.7 1.7 Mean 1.6331
3 12/4/2018 1.3 1.3 C.V. 0.3166
4 3/5/2019 1.2 1.2 n 16
5 6/4/2019 1.8 1.8
6 9/10/2019 1.2 1.2 Mult Factor = 1.2400
7 12/3/2019 1.6 1.6 Max. Value 3.30 ug/L
8 3/3/2020 1.2 1.2 Max. Pred Cw 4.09 ug/L
9 6/2/2020 1.3 1.3
10 9/15/2020 3.3 3.3
11 12/8/2020 1.7 1.7
12 3/2/2021 1.4 1.4
13 6/8/2021 2 2
14 9/14/2021 1.47 1.47
15 12/7/2021 1.4 1.4
16 3/8/2022 1.56 1.56
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
Values" then "COPY"
. Maximum data
points = 58
Selenium
Date Data BDL=1/2DL Results
1 6/5/2018 < 1 0.5 Std Dev. 0.1797
2 9/11/2018 < 1 0.5 Mean 0.4688
3 12/4/2018 < 1 0.5 C.V. 0.3834
4 3/5/2019 < 1 0.5 n 16
5 6/4/2019 < 1 0.5
6 9/10/2019 < 1 0.5 Mult Factor = 1.2900
7 12/3/2019 < 1 0.5 Max. Value 1.0 ug/L
8 3/3/2020 < 1 0.5 Max. Pred Cw 1.3 ug/L
9 6/2/2020 < 2 1
10 9/15/2020 < 0.5 0.25
11 12/8/2020 < 0.5 0.25
12 3/2/2021 < 0.5 0.25
13 6/8/2021 < 0.5 0.25
14 9/14/2021 < 1 0.5
15 12/7/2021 < 1 0.5
16 3/8/2022 < 1 0.5
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
Values" then "COPY"
. Maximum data
points = 58
23973 Saltwater RPA 2022_12 MGD,data
Date}

REASONABLE POTENTIAL ANALYSIS - DATA
Silver
Values" then "COPY"
. Maximum data
points = 58
Zinc
Date Data BDL=1/2DL Results Date Data BDL=1/2DL Results
1 6/5/2018 < 1 0.5 Std Dev. 0.1033 1 6/5/2018 12 12 Std Dev. 2.6468
2 9/11/2018 < 0.1 0.05 Mean 0.0766 2 9/11/2018 11 11 Mean 13.1188
3 10/9/2018 < 0.1 0.05 C.V. 1.3490 3 12/4/2018 10.6 10.6 C.V. 0.2018
4 12/4/2018 < 0.1 0.05 n 19 4 3/5/2019 19 19 n 16
5 3/5/2019 < 0.1 0.05 5 6/4/2019 12.4 12.4
6 5/7/2019 < 0.1 0.05 Mult Factor = 1.8200 6 9/10/2019 10.7 10.7 Mult Factor = 1.1500
7 6/4/2019 < 0.1 0.05 Max. Value 0.50 ug/L 7 12/3/2019 13 13 Max. Value 19.0 ug/L
8 9/10/2019 < 0.1 0.05 Max. Pred Cw 0.91 ug/L 8 3/3/2020 16 16 Max. Pred Cw 21.9 ug/L
9 12/3/2019 < 0.1 0.05 9 6/2/2020 12 12
10 3/3/2020 < 0.1 0.05 10 9/15/2020 9.7 9.7
11 5/5/2020 < 0.1 0.05 11 12/8/2020 13.2 13.2
12 6/2/2020 < 0.21 0.105 12 3/2/2021 13 13
13 9/15/2020 < 0.1 0.05 13 6/8/2021 16.6 16.6
14 12/8/2020 < 0.1 0.05 14 9/14/2021 10.1 10.1
15 3/2/2021 < 0.1 0.05 15 12/7/2021 15.4 15.4
16 6/8/2021 < 0.1 0.05 16 3/8/2022 15.2 15.2
17 9/14/2021 < 0.1 0.05 17
18 12/7/2021 < 0.1 0.05 18
19 3/8/2022 < 0.1 0.05 19
20 20
21 21
22 22
23 23
24 24
25 25
26 26
27 27
28 28
29 29
30 30
31 31
32 32
33 33
34 34
35 35
36 36
37 37
38 38
39 39
40 40
41 41
42 42
43 43
44 44
45 45
46 46
47 47
48 48
49 49
50 50
51 51
52 52
53 53
54 54
55 55
56 56
57 57
58 58
Values" then "COPY"
. Maximum data
points = 58
23973 Saltwater RPA 2022 12 MGD,data
Date}

REASONABLE POTENTIAL ANALYSIS - DATA
Chloroform
Date Data BDL=1/2DL Results
1 3/4/2019 1.34 1.34 Std Dev. 0.5940
2 9/14/2020 < 1 0.5 Mean 0.9200
3 C.V. (default) 0.6000
4 n 2
5
6 Mult Factor = 3.7900
7 Max. Value 1.34000 pg/L
8 Max. Pred Cw 5.07860 pg/L
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
Values" then "COPY"
. Maximum data
points = 58
Toluene
Date Data BDL=1/2DL Results
1 3/4/2019 1.59 1.59 Std Dev. 0.7707
2 9/14/2020 < 1 0.5 Mean 1.0450
3 C.V. (default) 0.6000
4 n 2
5
6 Mult Factor = 3.7900
7 Max. Value 1.59000 pg/L
8 Max. Pred Cw 6.02610 pg/L
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
Values" then "COPY"
. Maximum data
points = 58
23973 Saltwater RPA 2022_12 MGD,data
Date}

REASONABLE POTENTIAL ANALYSIS - DATA
Bis(2-ethylhexyl) phthalate
Date Data BDL=1/2DL Results
1 3/4/2019 1.35 1.35 Std Dev. 0.5065
2 9/15/2020 < 0.949 0.4745 Mean 0.7652
3 6/24/2021 < 0.942 0.471 C.V. (default) 0.6000
4 n 3
5
6 Mult Factor = 3.0000
7 Max. Value 1.35000 pg/L
8 Max. Pred Cw 4.05000 pg/L
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
Values" then "COPY"
. Maximum data
points = 58
1,4-Dioxane
Date Data BDL=1/2DL Results
1 1/11/2022 2.21 2.21 Std Dev. N/A
2 Mean 2.2100
3 C.V. (default) 0.6000
4 n 1
5
6 Mult Factor = 6.2000
7 Max. Value 2.21000 pg/L
8 Max. Pred Cw 13.70200 pg/L
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
Values" then "COPY"
. Maximum data
points = 58
23973 Saltwater RPA 2022_12 MGD,data
Date}

REASONABLE POTENTIAL ANALYSIS - DATA
PFOA
Date Data BDL=1/2DL Results
1 1/6/2022 5.11 5.11 Std Dev. N/A
2 Mean 5.1100
3 C.V. (default) 0.6000
4 n 1
5
6 Mult Factor = 6.2000
7 Max. Value 5.11000 mg/L
8 Max. Pred Cw 31.68200 mg/L
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
Values" then "COPY"
. Maximum data
points = 58
PFOS
Date Data BDL=1/2DL Results
1 Std Dev. NO DATA
2 Mean NO DATA
3 C.V. NO DATA
4 n 0
5
6 Mult Factor = N/A
7 Max. Value N/A mg/L
8 Max. Pred Cw N/A mg/L
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
Values" then "COPY"
. Maximum data
points = 58
23973 Saltwater RPA 2022_12 MGD,data
Date}

REASONABLE POTENTIAL ANALYSIS - DATA
NO DEFINED PARMETER
Date Data BDL=1/2DL Results
1 Std Dev. NO DATA
2 Mean NO DATA
3 C.V. NO DATA
4 n 0
5
6 Mult Factor = N/A
7 Max. Value N/A
8 Max. Pred Cw N/A
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
Values" then "COPY"
. Maximum data
points = 58
23973 Saltwater RPA 2022_12 MGD,data
Date}

Mercury Minimization Report of Activities
M'Kean Maffitt (Southside) WWTP Renewal Application
The Cape Fear Public Utility Authority drafted a Mercury Minimization Plan during the previous permit
cycle. However, due to the ongoing discussions between POTWs, NCDEQ, and EPA regarding the
minimization plans and the dental amalgam rule, many of the activities were placed on hold, pending
resolution of the requirements. Following the receipt of the M'Kean Maffit WWTP (Southside) permit
that went into effect in 2018, staff updated the MMP and began moving forward with the
requirements.
Cape Fear Public Utility Authority (CFPUA) ensured EPA Method 1631E (low level) mercury sampling was
occurring at both the influent and effluent operational and NPDES monitoring locations. All significant
industrial users (SIUs) were transitioned to require sampling of their effluent discharges for mercury and
during this reporting period, all monitoring has been changed to EPA Method 1631E to ensure accurate
analysis at the low levels required by this pollutant of concern. During annual inspections of the SIUs, a
review of raw materials is a part of this process. The data collected for the SIUs and the WWTPs over
this reporting period has been compiled to create a baseline to measure improvements as further
Mercury education and minimization activities occur. The most recent headworks analysis and
allocation tables do not reflect an overallocation of mercury.
The CFPUA Laboratory evaluated all its procedures, chemicals, and equipment and identified mercury -
containing items. These items were either replaced or proper disposal techniques implemented. All
mercury thermometers were replaced with non -mercury thermometers. The chloride method
conducted in the lab used mercury -containing reagents and this procedure was changed to a method
that does not use mercury. The COD analysis is the only analysis that still requires mercury in the
method. The non -mercury method is not approved for compliance samples. Changes have been made
to this method to consolidate testing where possible to minimize QC requirements, generating less
mercury waste, and a hazardous waste disposal company picks up this waste to ensure it is properly
disposed of and not released into the environment.
We now have a section of our website with the Environmental Protection page that has mercury
minimization/ educational information available to the public so they can make wise choices on
products and disposal of such products. Further Education has occurred with local dental offices via the
New Hanover County (NHC) American Dental Association and our coordination with this group. In our
mercury minimization plan, staff outlined a task for more outreach and surveys of other non -domestic
users. These surveys did not occur as planned during the review period. Much of the review period was
an abnormal period which was encompassed by COVID responses and re -working of our work
environment and work processes. CFPUA has developed a plan of action to double up on the number of
surveys needed to survey all non -domestic users during this next review period. Moving forward the
Fats, Oils and Grease biannual bill stuffers will also include language about mercury to educate
customers on proper disposal methods, hazards, and sources.
Regarding the Dental Amalgam Rule, Cape Fear Public Utility Authority (CFPUA) took a leadership role as
a member of the North Carolina Pretreatment Consortium (NCPC) working with both the NCPC and the
North Carolina Department of Environmental Quality (NCDEQ) to develop a "Dental Amalgam Rule" plan
to be used by Publicly Owned Treatment Works (POTW) within North Carolina. The goal was to have
consistency with all POTWs. Locally, CFPUA met with the New Hanover County American Dental

Association Chairman to give the dentists an opportunity to provide input. The outcome of these
efforts was the creation of three options being authorized by NCDEQ to be used by North Carolina
POTWs. CFPUA chose "Option One" from the "North Carolina Model Enforcement Response Plan"
which is: Implementing the 3 Rs (receive, review, retain) and added the following discretionary
statement to the ERP: "Enforcement actions taken in response to the requirements of 40 CFR Part 441
will be taken/decided on a case -by -case basis." In the event of mercury issues at the POTW, NC DWR will
require increased oversight and enforcement.
A list of New Hanover County Dentists was obtained from the North Carolina Dental Society. The
dentists were entered into an Excel spreadsheet for report tracking purposes. As "One Time Compliance
Reports" (OTCR) are received, they are reviewed and retained. There are 169 dentists within the service
area. CFPUA has contacted the Dental Association within the County and has worked through this
organization to educate the local dental providers on the amalgam separator requirements and the
OTRC. To date, only ten OTCRs have been received. Additionally, CFPUA Environmental Management
Department met with internal Engineering Plan Review staff and with the New Hanover County
Plumbing Department to discuss the requirements of the "Dental Amalgam Rule". Both are now
requiring all new dental facilities to install ISO 11143 compliant amalgam separators. Only five new
dental offices meeting the requirements to require an amalgam separator have opened businesses
within our service area during the reporting period and all are complying.

Reduction in Frequency Evalaution
Facility:
M'Kean Maffitt WWTP
Permit No.
NC0023973
Review period
3 yrs)
(use
05/2019 - 04/2022
Approval Criteria:
Y/N?
1. Not currently under SOC
Y
2. Not on EPA Quarterly noncompliance report
Y
3. Facility or employees convicted of CWA
violations
N
Data Review
Units
Weekly average
limit
Monthly
average
limit
50%
MA
3-yr mean
(geo mean
for FC)
< 50%?
200%
MA
# daily
samples
>200%
<15?
200%
WA
# daily
samples
>200%
< 20?
# of non -
monthly
limit
violations
> 2?
# civil penalty
asessment
> 1?
Reduce
Frequency?
(Yes/No)
CBOD (Weighted)
mg/L
40
25
13
8.2
Y
50
0
Y
II
0
N
0
N
Y
TSS
mg/L
45
30
15
2.7
Y
60
0
Y
0
N
0
N
Y
Ammonia (weighted)
mg/L
0
0
N
0
468
N
0
N
0
N
N
Enterococci
#/100
276
35
18
9.5
Y
552
2
Y
0
N
0
N
Y

CFPUA staff had samples from the process control effluent location analyzed by identified certified methods for pollutants that are certified by the NC State Lab. This includes
pollutants that are not included in the routine NPDES permit monitoring and priority pollutant list. This "Detected" pollutants are summarized in a "Disclosure of Poillutants"
table that is attached. This summary includes results for PFAS and other pollutants at this process control location, which CFPUA believes is a good estimate of the value that
would be present in the effluent, Outfall 001, discharge.
Estimated Concentration (If
Known)
2.21 ug/L
Outfall Number
Commonly used compound and low levels are in the water supply - no
specific dischargers have been identified
Facility Name
Southside WWTP
Reason Pollutant Believe
NPDES Number
NC0023973
Method Number (if
CAS number Applicable)
EPA624.1 SIM
ti
CT
m
N
r-I
EPA Identification Number
Pollutant (Required)
v
C
x
x
O_
0
r-i

Disclosure of Pollutants Detected at the Southside Wastewater Treatment Process Control Effluent Location
Comments
'FAS compounds in red tont are new
to the CFPUA List as of I/6/22
Lab Project #
Contract Lab
Certification #
<
z
<
z
a
Z
a
z
a
z
a
z
a
z
a
z
a
z
a
z
a
z
a
z
a
z
Lab Name
Enthalpy Analytical -
Wilmington
Enthalpy Analytical -
Wilmington
Enthalpy Analytical -
Wilmington
Enthalpy Analytical -
Wilmington
Enthalpy Analytical -
Wilmington
Enthalpy Analytical -
Wilmington
Enthalpy Analytical -
Wilmington
Enthalpy Analytical -
Wilmington
Enthalpy Analytical -
Wilmington
Enthalpy Analytical -
Wilmington
Enthalpy Analytical -
Wilmington
Enthalpy Analytical -
Wilmington
Enthalpy Analytical -
Wilmington
Test Method
,PFAS by Isotope
Dilution (non -
[potable water)
PFAS by Isotope
Dilution (non -
potable water)
PFAS by Isotope
Dilution (non -
potable water)
PFAS by Isotope
Dilution (non -
potable water)
PFAS by Isotope
Dilution (non -
potable water)
PFAS by Isotope
Dilution (non -
potable water)
PFAS by Isotope
Dilution (non -
potable water)
PFAS by Isotope
Dilution (non -
potable water)
PFAS by Isotope
Dilution (non -
potable water)
PFAS by Isotope
Dilution (non -
potable water)
PFAS by Isotope
Dilution (non -
potable water)
PFAS by Isotope
Dilution (non -
potable water)
PFAS by Isotope
Dilution (non -
potable water)
Reporting
Limit
01
.,
0,
N
.,
N
N
O
N
O
NM
NJ
O
N
.-,
O,
N
.,
O,
N
-
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N
.,
I.
N
O
00
N
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N
O
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C
00
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00
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N
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00
0
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N
\0
m
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N
N
m
O,
CO
m
O
N
to
O
N
m
O
Parameter
co
1
>
Z
a
a
2,3,3,3-Tetrafluoro-2-
(1,1,2,2,3,3,3-
heptafluoropropoxy)-propanoic
acid or
Hexafluoropropyleneoxide
dimer acid (HFPO-DA or
PFPrOPrA or GenX)
Perfluorooctanesulfonate or
Perfluorooctane sulfonic acid
(PFOS)
N-methylperfluoro-1-
loctanesulfonamidoacetic acid
or N-Methylperfluorooctane
lsulfonamido acetic acid
(NMeFOSAA)
Byproduct 4 (BP4); R-PSDA
Byproduct 5 (BPS); Hydrolyzed
PSDA
>
Sodium 2,3,3,3-tetrafluoro-2-
(perfluoroethoxy)propanoic
acid or Perfluoroethoxypropyl
carboxylic acid (PEPA)
Perfluoropentanoic acid
(PFPeA)
Perfluoropentanesulfonate or
Perfluoropentane sulfonic acid
(PFPeS)
Fluorotelomer sulfonate 6:2 or
1H, 1H, 2H, 2H-Perfluorooctane
sulfonic acid (6:2 FTS)
a
.n
m
Sample Location
SSWWTP Effluent Process
IControl Location
I SSWWTP Effluent Process
Control Location
SSWWTP Effluent Process
Control Location
SSWWTP Effluent Process
Control Location
SSWWTP Effluent Process
Control Location
SSWWTP Effluent Process
Control Location
SSWWTP Effluent Process
Control Location
SSWWTP Effluent Process
Control Location
SSWWTP Effluent Process
Control Location
SSWWTP Effluent Process
Control Location
SSWWTP Effluent Process
Control Location
SSWWTP Effluent Process
Control Location
SSWWTP Effluent Process
Control Location
Composite or
Grab
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(0
0
0
v
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2
a
m
.,
O
.,
2
<
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.,
2
<
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<
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a
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2
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19.41
O
NJ
N
0
N
N
N
0
N
LD
N
N
0
N
t\D
N
N
0
N
t0
N
N
0
N
t0
N
N
0
N
kDD
N
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0
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t
N
N
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N
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LC,
N
N
0
N
N
N
0
N
,.00
N
N
0
N
N
NI
0
N
l\
0

Comments
Lab Project #
N
N
N
0
Contract Lab
Certification #
z
Z
z
Z
Z
Z
Z
z
Z
z
Z
Z
z
Z
Z
z
Lab Name
Enthalpy Analytical -
Wilmington
Enthalpy Analytical -
Wilmington
Enthalpy Analytical -
Wilmington
Enthalpy Analytical -
Wilmington
lEnthalpy Analytical -
Wilmington
Enthalpy Analytical -
Wilmington
Enthalpy Analytical -
Wilmington
Enthalpy Analytical -
Wilmington
Enthalpy Analytical -
Wilmington
Enthalpy Analytical -
Wilmington
Enthalpy Analytical -
Wilmington
Enthalpy Analytical -
Wilmington
Enthalpy Analytical -
Wilmington
Enthalpy Analytical -
Wilmington
Enthalpy Analytical -
Wilmington
Enthalpy Analytical -
Wilmington
Test Method
PFAS by Isotope
Dilution (non -
potable water)
PFAS by Isotope
Dilution (non -
potable water)
PFAS by Isotope
Dilution (non -
potable water)
PFAS by Isotope
Dilution (non -
potable water)
PFAS by Isotope
Dilution (non -
potable water)
PFAS by Isotope
Dilution (non -
potable water)
PFAS by Isotope
Dilution (non -
potable water)
PFAS by Isotope
'Dilution (non-
' potable water)
PFAS by Isotope
(Dilution (non -
[potable water)
PFAS by Isotope
Dilution (non -
potable water)
PFAS by Isotope
Dilution (non -
potable water)
PFAS by Isotope
Dilution (non -
potable water)
PFAS by Isotope
Dilution (non -
potable water)
PFAS by Isotope
Dilution (non -
'potable water)
PFAS by Isotope
Dilution (non -
potable water)
PFAS by Isotope
Dilution (non -
potable water)
Reporting
Limit
N
N
O
IN
N
O
IN
N
O
LD
.-1
.-(
vl
N
0
I.
N
O
N
NO
O
IN
N
0
N
N
O
0,
N
-;
01
N
.--i
N
m
"
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NI
"
0
rl
"
01
N
',
N
N
0
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m
c
c
(0
N.
m
c
oD
c
N.
40
c
00
c
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c
00
c
CD
c
0
c
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c
N.
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c
m
c
m
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m
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c
O
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C
m
M
.-I
N
LA
C
O
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n
M
N
CO
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CO
O
LA
N
N
i
O
00
00
00
a
00
ri
N
O
~
l0
O
01
O
N
C
to
O
Parameter
Perfluorohexanoic acid (PFHxA)
Perfluorooctanoic acid (PFOA)
Perfluorodecanoic acid (PFDA)
'N-CMAmP-6:2 FOSA
Perfluorohexanesulfonate or
Perfluorohexane sulfonic acid
(PFHxS)
Perfluorobutyric acid or
Perfluorobutanoic acid (PFBA)
Perfluorobutanesulfonate or
Perfluorobutane sulfonic acid
(PFBS)
Perfluoroheptanoic acid
(PFHpA)
Q
z
a
a
c
T
c
0
c
O
0
0)
a
Perfluoro(3,5-dioxahexanoic)
acid (PF02HxA)
Perfluoro(3,5,7-trioxaoctanoic)
acid (PF030A)
Perfluoro(3,5,7,9- 1
tetraoxadecanoic) acid
(PFO4DA)
d
a
Perfluoro-2-methoxyacetic acid
(PFMOAA)
Nafion Byproduct 2
Sample Location
SSWWTP Effluent Process
Control Location
SSWWTP Effluent Process
'Control Location
SSWWTP Effluent Process
Control Location
SSWWTP Effluent Process
'Control Location
SSWWTP Effluent Process
Control Location
SSWWTP Effluent Process
Control Location
1SSWWTP Effluent Process
Control Location
SSWWTP Effluent Process
Control Location
SSWWTP Effluent Process
Control Location
SSWWTP Effluent Process
Control Location
SSWWTP Effluent Process
Control Location
SSWWTP Effluent Process
Control Location
SSWWTP Effluent Process
Control Location
SSWWTP Effluent Process
Control Location
SSWWTP Effluent Process
Control Location
SSWWTP Effluent Process
Control Location
Composite or
Grab
s
CI
_0
l9
_0
U
_0
1
_0
0
_0
l9
_0
0
_0
0
.0
0
n
0
.n
0
_0
(0
_0
(0
_
(0
_0
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(0
v
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Q
m
0
Q
m
0
<
m
0
Q
m
0
<
m
0
<
m
0
<
m
0
<
m
0
<
m
0
<
m
0
<
m
0
<
m
0
<
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0
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0
<
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0
Q
(»
0
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( 6
0
N
N
O
N
N.,
lD
r l
N
N
0
N
\
LID
,-I'i
N
N
0
N
N.,
LID
N
N
O
N
\
LID
'i
N
N
0
N
iD
r-1
NJ
N
0
N
LID
rl
N
N
0
N
\
,D
J-,
N
N
0
N
\
LD
N
N
0
N
iD
N
N
0
N
iD
rl
N
N
0
N
N.N.\
1D
N
NJ
0
N
LID
N
N
0
N
iD
N
N
0
N
LID
N
N
0
N
\
LD
ti
N
N
0
N
N.
VD
',

Comments
MassDEP EPH Method - May 2004
v1.1.pdf
NEMI Method Summary - 5540 C
Lab Project #
22A0535
N
N
L
0
VD
Ls,
..
N
0
N
a
ry
N
'" l
.-I
ul
W
ul
N
Cr,
Contract Lab
Certification #
a
z
V1
01
V
.ti
V
.--
141
C
-
495
495
495
495
495
495
Vl
01
V
495
495
495
V1
Q1
O
375
375
40
440
Lab Name
Enthalpy Analytical -
Wilmington
Enthalpy Analytical -
Richmond
a
0
a
% l
CFPUA
CFPUA
Enthalpy Analytical -
Richmond
Enthalpy Analytical -
Richmond
Enthalpy Analytical -
Richmond
Enthalpy Analytical -
Richmond
Enthalpy Analytical -
Richmond
Enthalpy Analytical -
Richmond
Enthalpy Analytical -
Richmond
Enthalpy Analytical -
IRichmond
Enthalpy Analytical -
Richmond
Enthalpy Analytical -
Richmond
Enthalpy Analytical -
Richmond
Pace National - Mt.
Juliet
Pace National - Mt.
Juliet
Pace Analytical -
Asheville
Statesville Analytical
Test Method
PEAS by Isotope
Dilution (non -
potable water)
'^
v
N
4
a
w
m
0
0
0
L.41
v
2
vt
SM 2510 B
SM2130B
EPA 200.7 Rev 4.4
EPA 200.7 Rev 4.4
:EPA 200.7 Rev 4.4
EPA 200.7 Rev 4.4
EPA 200.7 Rev 4.4
EPA 200.7 Rev 4.4
EPA 200.7 Rev 4.4
SM22 2320B-2011
EPA 300.0 Rev. 2.1
EPA 300.0 Rev. 2.1
EPA 160.4
MADEP
MADEP
0
N
W
a
0
0
V
c
2
vi
SM 5540 C-2011
Reporting
Limit
n.
OO
0.50
0
O
O
O
O
O
O
0.50
O
O
O
O
0.0100
O
O
0.100
O
O
0
ut
O
O
0
.--
20.0
.-I
O
,
O
0.50
.I
O
•D
m
0
mg/L
umhos/cm
NTU
E
E
E
mg/L
mg/L
mg/L
E
E
mg/L
E
E
mg/L
mg/L
mg/L
mg/L
y
d'
M
C
.-I
.ti
N
N
.y
Vl
N
N
N
O
Cr;
N
V)
.M-1
N
Lt.)
C
rn
O
O
O
.ti
.y
VI
Vl
N
C
N
.-1
O
N
ti
N
W
O
G
CO
V
O
O
.N-�
0
.-1
G
LLD
N
G
V1
M
O
Parameter
5:3 FTCA
1,4 - Dioxane
O
.c
Conductivity
Turbidity
U
coU U
Potassium
Magnesium
N
N
N
OD
p
2
Sodium
C
O
n
Strontium
Z.
C
Y
a
Fluoride
Sulfate
O
N
0
>
EPH (Aliphatic C19-C36)
Total Extractable Hydrocarbons
Orthophoshate
a
co
2
Sample Location
SSWWTP Effluent Process
Control Location
SSWWTP Effluent
SSWWTP Effluent Process
Control Location
SSWWTP Effluent Process
Control Location
SSWWTP Effluent Process
Control Location
SSWWTP Effluent Process
Control Location
SSWWTP Effluent Process
Control Location
SSWWTP Effluent Process
Control Location
SSWWTP Effluent Process
Control Location
SSWWTP Effluent Process
Control Location
SSWWTP Effluent Process
Control Location
SSWWTP Effluent Process
Control Location
SSWWTP Effluent Process
Control Location J
SSWWTP Effluent Process
Control Location
SSWWTP Effluent Process
Control Location
SSWWTP Effluent Process
Control Location
SSWWTP Effluent Process
Control Location
SSWWTP Effluent Process
Control Location
SSWWTP Effluent Process
Control Location
SSWWTP Effluent Process
Control Location
Composite or
Grab
.0
0
Grab
Composite
Composite
Composite
N
0
0
E
O
U
Composite
Composite
Composite
Composite
Composite
Composite
Composite
Composite
Composite
Composite
Composite
Composite
Composite
Composite
v
E
~
a
rn
O
a
.N
-I
O
..y
a
N
N
CO
a
N
N
CO
a
N
N
CO
a
N
N
00
a
N
N
CO
a
N
N
CO00
a
N
N
a
N
N
00
a
N
N
00
a
N
N
00
a
N
N
Cc;
a
NI
N
CO
a
IN
N
co
a
IV
N
co
a
Vl
.�
co
a
Vl
.-1
00
a
ti
00
a
Vl
.-i
CO
N
fC
N
NJ
lD
N
N
0
N
.\-I
.-�
\
N
N
0
N
\
lO
N
\
tV
N
0
N
\
lD
N
.\-1
N
N
0
N
\
lD
N
.\-1
N
N
0
N
\
VD
N
.\1
N
N
O
N
lD
N
.\i
N
N
O
N
\
U)
N
\
Ni
N
0
N
\
l0
N
.\-1
N
N
O
N
\
l0
N
\
N
N
0
N
\
V)
N
.\-1
N
N
0
N
\
lD
N
ti
N
N
O
N
\
l0
N
ti
N
N
O
N
\
lD
\
.i
N
N
0
N
\
l0
\
.-1
N
N
0
N
\
lD
\
.-1
N
O
\
...�
N
N
O
.-I
N
N
O
.ti
N
IN
O
.1
N

Comments
Method 1650: Adsorbable Organic
Halides by Adsorption and Coulometric
Titration; Revision C (epa.govj
Method 9020B: total Organic Halides
(TOX), part of Test Methods for
Evaluating Solid Waste,
Physical/Chemical Methods (epa.govj
Method 8011: 1,2-Dibromoethane and,
1,2-Dibrom-3-Chloropropane by
Microextraction and Gas
Chromatography, part of Test Methods
for Evaluating Solid Waste,
Physical/Chemical Methods (epa.gov)
Lab Project #
1
A
m
O
CO1-1
O
M
C'
en
CO
0
m
N
N
92586021
C
o
m
N
N
Contract Lab
Certification #
E87052
E87052
E87052
m
m
rV
233
M
m
N
233
Vl
m
C
00
.ti
lD
12
495
Lab Name
Eurofins Eaton - South
Bend
Eurofins Eaton - South
Bend
Eurofins Eaton - South
[bend
GEL Laboratories
GEL Laboratories
GEL Laboratories
GEL Laboratories
Enthalpy Analytical -
Richmond
Pace Analytical - Gulf
(Coast
Pace Analytical -
Charlotte
Enthalpy Analytical Richmond
Test Method
EPA 1650C
EPA 1650C
L.,
0
00
a
00
SW-846 9020 B
SM 2310 B-2011
SM 2120 B-2011
SM 5310 B-2014
SW-846 8011
[SW-846 8015 C
V
01
ti
00
mL.)
O
0
a
W
00
N
Z
O
O
v
2 0
Vl N
Reporting
Limit
0.02
0.02
N
O
O
O
O
N
1.00
0
O
.-r
0
O
.--i
0
O
0
O
0
O
.-1
0.080
L/t
O
O
Units
mg/L
mg/L
mg/L
ODGD
9
mg/L
PCU
mg/L
E
CO
9
mg/L
mg/L
H
M
G
cc
O
rn
O
O
CO
-
O
N
n
G
G
O
.-
in
M.
~n
e-.
Ol
Parameter
Adsorbable Organic Halides
AOX Result 1
AOX Result 2
Total Organic Halides (TOX)
'O
u
Q
O
O
u
Total Organic Carbon (TOC)
1,2,3-Trichloropropane
Nonhalogenated Volatile
Organics (Ethylene glycol)
TPH GASOLINE RANGE,
ORGANICS
Nitrite as N
Sample Location
,SSWWTP Effluent Process
'Control Location
SSWWTP Effluent Process
Control Location
SSWWTP Effluent Process
Control Location
SSWWTP Effluent Process
Control Location
SSWWTP Effluent Process
Control Location
SSWWTP Effluent Process
Control Location
SSWWTP Effluent Process
Control Location
SSWWTP Effluent Process
Control Location
SSWWTP Effluent Process
Control Location
SSWWTP Effluent Process
Control Location
SSWWTP Effluent Process
Control Location
Composite or
Grab
Composite
Composite
Composite
Composite
Composite
Composite
Grab
3D
(O
o
Grab
Grab
Composite ��
E
i=
a
0o
o
00
a
0o
o
00
<
0o
O
0o
a
0o
o
00
a
0o
0
oo
<
00
o
m
a
00
'
m
a
00
v
m
<
00
v
m
a
VD
c
Cl)
a
01
o
m
0)
N
o
N
N
0
N
N
N
N
0
N
N
N
N
0
N
N
N
N
O
�
N
N
NJ
N
0
09
N
N
N
N
0
N
N
N
Ni
0
04
N
\
N
eV
N
0
eV
N
\
N
NN
N
0
09
N
\
N
N
0
eV
N,
\
N
N
N
O
N
01
09
N

NM Cape Fear
Public Utility Authority
Stewardship. Sustainability. Service.
September 14, 2022
Mr. Gary Perlmutter
NC DENR/DWQ/Complex Permitting Unit
1617 Mail Service Center
Raleigh, NC 27699-1617
Beth Eckert
Deputy Executive Director
Environmental Management and Sustainability
235 Government Center Drive
Wilmington, NC 28403
910-332-6646
[e-mail]
Re: Comments on Draft Permit - NPDES Permit NC0023973
M'Kean Maffitt (Southside) WWTP
Cape Fear Public Utility Authority (CFPUA)
New Hanover County, North Carolina
Dear Mr. Perlmutter,
We have completed our review of the NPDES draft permit NC0023973, received on
August 19, 2022, for the CFPUA's Southside WWTP. There are modifications to the
effluent limitations and monitoring requirements which will impact our operations.
Following are our comments and requests for clarification:
• The comments in bullet point 2 in your cover letter are not in agreement with
Part A (1) effluent limitations page as follows:
o "BOD" should state "CBOD"
o "Fecal Coliform" should state "Enterococci"
o Ammonia -Nitrogen is included in this bullet point as being required to be
monitored twice a week, but the effluent limitations and monitoring
requirements section has the monitoring frequency as 3 times per week.
Please clarify which frequency will be required.
• Imposition of the Dissolved Oxygen (DO) limit of > 5 mg/L was unexpected and
has the potential to be problematic at low flow times at the facility. There is
currently no treatment process at the facility to increase DO prior to discharge
and DO limit has never been imposed on this facility. This facility has not been
expanded or upgraded since 1986 which predates the effective date of the
administrative code cited, 15A NCAC 028 .0220 TIDAL SALT WATER QUALITY
STANDARDS FOR CLASS SC WATERS, which is October 1, 1995. We are asking
that a DO limit not be imposed at this facility until expansion occurs. Expansion

is expected to begin within this pending permit cycle with design beginning in
2023.
• CFPUA agrees and accepts all other requirements of the Draft permit.
• We are requesting a copy of all comments, from the general public or from other
agencies, received during the 30-day comment period.
Thank you and feel free to contact me with any questions at 910-524-4133 or by
email at [e-mail].
Sincerely,
Beth Eckert
Deputy Executive Director
Environmental Management and Sustainability Department
Copies: C. Vandermeyden, M. Hourihan, M. Vann, S. Styers