McKee and Clear Creeks Final TMDL

Fecal Coliform Total Maximum Daily Load for the
McKee and Clear Creek Watersheds,
Mecklenburg and Cabarrus Counties,
North Carolina





 






 
  
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TMDL for Fecal Coliform Bacteria: McKee and Clear Creeks June 2003
SUMMARY SHEET
Total Maximum Daily Load (TMDL)
McKee Creek - At and Above the Confluence with Reedy Creek

1. 303(d) Listed Waterbody Information

State: North Carolina
County: Mecklenburg and Cabarrus
Major River Basin: Yadkin Area Basin
Watershed: McKee Creek (within HUC03040105)
DWQ Subbasin 03-07-11
Waterbody Name: McKee Creek / Clear Creek
Waterbody ID: Use Support Index Numbers 13-17-8-4 / 13-17-8-4-1
Location: Headwaters to confluence with Reedy Creek
Impacted Stream Length: Partially Supporting:
McKee Creek – 6.5 miles
Clear Creek – 1.6 miles
Watershed Area: 8.6 square miles
Tributary to: Reedy Creek

Constituent(s) of Concern: Fecal Coliform Bacteria

Designated Uses: Secondary Recreation

Applicable Water Quality Standard for Secondary Recreation (most stringent
standard):
Organisms of the coliform group: fecal coliforms shall not exceed a geometric mean of 200/100ml
(MF count) based upon at least five consecutive samples examined during any 30 day period, nor
exceed 400/100 ml in more than 20 percent of the samples examined during such period.

2. Public Notice Information

Forms of Public Notification: A draft of the McKee and Clear Creek TMDL was publicly
noticed through various means, including notification in two local newspapers, The
Charlotte Observer and The Independent Tribune. The TMDL was also available from
the Division of Water Quality’s website at http://h2o.enr.state.nc.us/tmdl/draft_TMDLs.htm
during the comment period. A public comment period was held for the 30 days prior to
November 29, 2002. A public meeting was held in Concord on November 18, 2002. A
second public comment period was held from May 19, 2003 to June 3, 2003 due to
revisions to the TMDL.

Did notification contain specific mention of TMDL proposal? YES
Were comments received from the public? NO
Was a responsiveness summary prepared? Not applicable

3. TMDL Development

Analysis/Modeling:
TMDL for Fecal Coliform Bacteria: McKee and Clear Creeks June 2003
A mass balance approach coupled with a series of Flow Duration and Load
Duration curves was used to calculate the TMDLs for the impaired streams.

Critical Conditions:
An intensive survey at McKee Creek conducted by the NC DENR, Division of
Water Quality, from April 10 to June 5, 2001, provided the basis for this TMDL.
A comparison to a 7-year period of record in a nearby watershed indicated that
flows during the intensive survey were only exceeded 16-26% of the time.

Seasonal Variation:
For the listed streams, upstream-downstream data collected at two point source
discharges from 4/1/1998 through 7/6/2000 shows that high, instream fecal
coliform levels were common throughout the year, with no particular season
representing a worst case period.

3. Allocation Watershed/Stream Reach:

TMDL Components
Watershed TMDL WLA-Cont LA +WLA wt wx MOS WLA Wet Wx WLA Total LA only
Units Acres cfu/day cfu/day cfu/day cfu/day cfu/day cfu/day cfu/day

Upper Mckee
Creek at MCK-2 4166 1.82E+10 8.02E+09 8.36E+09 1.82E+09 7.92E+09 1.59E+10 4.37E+08
Clear Creek 599 2.62E+09 0 2.36E+09 2.62E+08 2.36E+08 2.36E+08 2.12E+09
Lower McKee 751 3.28E+09 0 2.95E+09 3.28E+08 2.95E+09

Total McKee 5516 2.41E+10 8.02E+09 1.37E+10 2.41E+09 8.16E+09 1.62E+10 5.51E+09
McKee WLA-Cont 30-day load = 2.406e+11 cfu; McKee Wet Wx WLA 30-day load = 2.448e+11 cfu
Wet Wx WLA = MS4 load

Wasteload Allocations (WLA): 1.62 x 1010 counts/day

Load Allocation (LA): 5.51 x 109 counts/day

Margin of Safety (MOS): 40 counts/100 ml; conservative assumptions: 2.41 x 109 counts/day

Total Maximum Daily Load (TMDL) including, by definition, the MOS =

2.41 x 1010 counts/day or 400 counts/100 ml

Reduction required: 85%
TMDL for Fecal Coliform Bacteria: McKee and Clear Creeks June 2003

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Table of Contents
LIST OF FIGURES...................................................................................................................................... III
1.0 INTRODUCTION................................................................................................................................... 1
1.1 BACKGROUND ..................................................................................................................................... 2
1.2 WATERSHED DESCRIPTION.................................................................................................................. 3
1.3 WATER QUALITY TARGET................................................................................................................... 8
2.0 WATER QUALITY ASSESSMENT...................................................................................................... 9
See Appendix A for a complete listing of the data.............................................................................. 10
3.0 SOURCE ASSESSMENT..................................................................................................................... 10
3.1 POINT SOURCE ASSESSMENT .............................................................................................................. 11
3.1.1 Continuous Discharge NPDES Facilities ................................................................................. 11
3.1.2 Wet Weather NPDES Facilities................................................................................................. 12
3.2 NONPOINT SOURCE AND WET WEATHER POINT SOURCE ASSESSMENT............................................. 12
3.2.1 Runoff from Agricultural Lands................................................................................................ 12
3.2.2 Leaking Septic Systems, the Sewer System, and Urban Runoff................................................. 15
3.2.3 Wildlife....................................................................................................................................... 18
4.0 ANALYTICAL APPROACH ............................................................................................................... 19
4.1 SELECTION OF ANALYTICAL APPROACH............................................................................................ 19
4.2 ANALYTICAL SETUP ........................................................................................................................... 19
4.3 ANALYTICAL RESULTS ...................................................................................................................... 20
4.4 UNCERTAINTY ................................................................................................................................... 28
5.0 TOTAL MAXIMUM DAILY LOAD (TMDL) .................................................................................... 28
5.1 WASTE LOAD ALLOCATION (WLA) .................................................................................................. 29
5.2 WET WEATHER WASTELOAD ALLOCATION (WETWXWLA) LOAD ALLOCATION (LA) ................... 31
5.3 MARGIN OF SAFETY........................................................................................................................... 31
5.4 SEASONAL VARIATION AND CRITICAL PERIOD.................................................................................. 32
5.5 ALLOCATION ..................................................................................................................................... 34
6.0 SUMMARY AND FUTURE CONSIDERATIONS...................................................................... 35
6.1 MONITORING ..................................................................................................................................... 36
6.2 IMPLEMENTATION.............................................................................................................................. 36
7.0 PUBLIC PARTICIPATION...........................................................................................................36
REFERENCES............................................................................................................................................. 37
APPENDIX A -- INTENSIVE SURVEY DATA, SPRING OF 2001....................................................... 39
APPENDIX B -- POINT SOURCE ASSESSMENT ................................................................................. 42
APPENDIX C -- SEASONALITY AND CRITICAL PERIOD................................................................. 44
APPENDIX D -- FAILING SEPTIC SYSTEMS....................................................................................... 47
APPENDIX E -- FLOWS AND CALCULATED FECAL COLIFORM LOADS AT 200 CFU/100 ML;
SAMPLE CONCENTRATIONS AND STREAM LOADS ........................................................................ 48
TMDL for Fecal Coliform Bacteria: McKee and Clear Creeks June 2003

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APPENDIX F -- RANKED DATA USED TO GENERATE THE FLOW DURATION AND LOAD
DURATION CURVES FOR BOTH THE “200” AND “400” STANDARDS............................................ 66
APPENDIX G: PUBLIC NOTICE OF DRAFT MCKEE AND CLEAR CREEK TMDL...................... 81

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LIST OF FIGURES

Figure 1. McKee and Clear Creek Watersheds – in bright yellow ....................................4
Figure 2. Clear Creek Subwatershed Boundaries...............................................................5
Figure 3. Landuse in the McKee Creek Watershed ...........................................................7
Figure 4. Flow Duration Curve for MY7.........................................................................21
Figure 5. Flow Duration Curve for MCK-2.....................................................................21
Figure 6. Load Duration or TMDL Curve for MY7 (“200 Standard”)............................23
Figure 7. Load Duration or TMDL Curve for MCK-2 (“200 standard”).........................23
Figure 8. Load Duration or TMDL Curve for MCK-2 (“400 standard”).........................24
Figure 9. Enlargement of the Load Duration Curve at MY7 for the “200 Standard.”.....25
Figure 10. Enlargement of the Load Duration Curve at MCK-2 for the “200 Standard.”26
Figure 11. Enlargement of the Load Duration Curve at MCK-2 for the “400 Standard,”
which must be met by at least 80% of the samples within a 30-day period..............27
Figure 12. Daily Flows at McKee Creek..........................................................................33
Figure 13. Monthly Average Flows at McKee Creek,.....................................................34

List of Tables

Table 1. Impaired Stream Segments Listed in NC’s 2000 303(d) List as Partially
Supporting Because of Fecal Coliform Contamination. .............................................1
Table 2. Land Use Distribution in the McKee Creek Watershed.......................................6
Table 3. Simplified Land Use Distribution in McKee Creek Watershed...........................8
Table 4. Intensive Survey Monitoring Data at McKee Creek Stations............................10
Table 5. Livestock Distribution by County (NASS, 1997)...............................................14
Table 6. Estimated Distribution of Livestock in the McKee Creek Watershed...............15
Table 7. Fecal Production Rates of Various Livestock (USEPA, 2000)..........................15
Table 8. Estimated Loads from Leaking Septic Systems.................................................16
Table 9. Urban Coliform Accumulation Rates (EPA, 2000) ...........................................17
Table 10. Urban Coliform Accumulation in the McKee Creek Watershed.....................18
Table 11. Calculation of Allowable TMDL Loads, McKee Creek – Clear Creek
Watershed..................................................................................................................29
Table 12. Continuous Flow Wasteload Allocation (CFWLA) Calculations....................30
Table 13. Calculation of TMDL Components .................................................................35

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1.0 INTRODUCTION

North Carolina’s 2002 Integrated Report includes two stream segments totaling a linear
distance of 8.1 miles in the McKee Creek watershed as impaired due to elevated fecal
coliform concentrations. Clear Creek is a small tributary to McKee Creek within the same
watershed. McKee and Clear creeks are located within Division of Water Quality (DWQ)
subbasin 03-07-11. The objective of this study is to develop a fecal coliform TMDL using
a watershed approach for McKee and Clear Creeks. These are the only stream segments
listed in the 2000 303(d) list for the McKee Creek watershed.

Table 1. Impaired Stream Segments Listed in NC’s 2000 303(d) List as Partially
Supporting Because of Fecal Coliform Contamination.

Stream Use Support Index No. Location Impaired Stream Miles
McKee Creek 13-17-8-4 From source to Reedy Creek 6.5
Clear Creek 13-17-8-4-1 From source to McKee Creek 1.6

This is a rapidly urbanizing watershed. I-485 is being extended through both the McKee
and Clear Creek watersheds. Dennis Testerman of the Cabarrus Soil and Water
Conservation District stated, “‘all bets are off’ on development. I would expect to see the
potential sources of fecal coliform bacteria shift from cattle, goats, and sheep to cats, dogs,
geese and horses” (Testerman, 2002). Agriculture is declining in the watershed. Rising
land values and an ageing farm population are combining to increase the rate of
urbanization.

The Cabarrus County Water and Sewer Authority Board, in a joint venture with Charlotte
Mecklenburg Utilities, has approved plans for 110,000 linear feet of interceptor sewers to
be placed along Reedy and McKee Creeks. These will range from 30-60 inches in
diameter. A pump station will be constructed to pump the Reedy Creek Interceptor flow
into the existing Rocky River 48 inch force main. The Mecklenburg portion of the design
is completed, as of November, 2002, and the Cabarrus portion will be designed shortly
thereafter. The plans are contingent upon approval by the City of Charlotte. (Furr,
2002.) It is assumed that both existing point source discharges to McKee Creek,
Lamplighter Village East and Bradfield Farms, will be diverted, sometime in the future,
into these interceptors. This will eliminate occasional problems associated with these
dischargers, allowing a slightly greater load allocation to the nonpoint sources in the
watershed.

This TMDL was developed through a number of iterative steps, each of which provided
valuable insight into the entire process. In order to preserve the lessons learned and to
illustrate the variety of results obtained by using different stations and different
components of the water quality standards, the major iterations are included in this
presentation. The reader should recognize that the first and second calculations of fecal
coliform reductions are for illustration only. The third and final major reduction
calculation is the basis for the final TMDL.

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1.1 Background

Section 303(d) of the Clean Water Act (CWA) and EPA’s Water Quality Planning and
Management Regulations (40 CFR Part 130) requires states to identify waterbodies which
are not meeting their designated use. A Total Maximum Daily Load (TMDL) is required
for pollutants causing the use impairment. The TMDL process establishes the allowable
loadings of pollutants for a waterbody based on the relationship between the pollution
sources and instream water quality conditions. This allows states to establish water
quality based controls to reduce pollution and restore and maintain the quality of their
water resources (USEPA 1991).

TMDLs are expressed as Waste Load Allocations (WLAs) for discharges regulated by the
National Pollutant Discharge Elimination System (NPDES) permit program, which
includes point sources from facilities and stormwater from regulated municipalities, and
Load Allocations (LAs) for all nonpoint sources. The TMDL must also provide an
appropriate margin of safety (MOS), which takes into account any uncertainty concerning
the relationship between pollutant loads and water quality response. A TMDL is denoted
by the equation:

TMDL =
WLAs +
LAs + MOS

The objective of a TMDL is to allocate allowable pollutant loads to known sources so that
actions may be taken to restore the water to its intended uses (EPA 1991). Generally, the
primary components of a TMDL, as identified by EPA (1991, 2000) and the Federal
Advisory Committee (FACA 1998), are as follows:

Target identification or selection of pollutant(s) and end-point(s) for consideration. The
pollutant and end-point are generally associated with measurable water quality related
characteristics that indicate compliance with water quality standards. North Carolina
indicates known pollutants on the 303(d) list.

Source assessment. All potential sources contributing to the impairment are identified and
loads quantified, where sufficient data exist.

Assimilative capacity estimation or level of pollutant reduction needed to achieve water
quality goal. The level of pollution should be characterized for the waterbody,
highlighting how current conditions deviate from the target end-point. Generally, this
component is identified through water quality modeling.

Allocation of pollutant loads. Allocating pollutant control responsibility to the sources of
impairment. The wasteload allocation portion of the TMDL accounts for the loads
associated with existing and future point sources in the NPDES program. Similarly, the
load allocation portion of the TMDL accounts for the loads associated with existing and
future nonpoint sources, stormwater, and natural background.

TMDL for Fecal Coliform Bacteria: McKee and Clear Creeks June 2003

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Margin of safety. The margin of safety addresses uncertainties associated with pollutant
loads, modeling techniques, and data collection. Per EPA (2000), the margin of safety
may be expressed explicitly as unallocated assimilative capacity or implicitly due to
conservative assumptions.

Seasonal variation. The TMDL should consider seasonal variation in the pollutant loads
and end-point. Variability can arise due to stream flows, temperatures, and exceptional
events (e.g., droughts, hurricanes).

The goal of the TMDL program is to restore uses to water bodies. Thus the
implementation of bacterial controls will be necessary to restore uses in these streams.
Although an implementation plan is not included in this TMDL, reduction strategies are
needed. The involvement of local governments and agencies will be needed in order to
develop implementation plans.

TMDLs developed for the McKee and Clear Creek watersheds are expressed in terms of
organism counts per day and as a percent reduction of instream concentration required to
achieve the designated use. The TMDLs represent the maximum load the stream can
assimilate to achieve water quality standards.

1.2 Watershed Description

The McKee and Clear Creek watersheds (Figure 1) are located within Mecklenburg and
Cabarrus Counties, in the eastern part of the Greater Charlotte Metropolitan Area, North
Carolina. Of the total 5516 acres in the McKee Watershed, 4008 acres or 73 percent of
the watershed lie within Mecklenburg County and the remaining 1508 acres or 27 percent
lie within Cabarrus County. The watershed is within the Hydrologic Unit Code 03040105,
as designated by the U.S. Geological Survey (DWQ subbasin 03-07-11). McKee Creek
originates in Mecklenburg County and flows north-northeast to its confluence with Reedy
Creek in Cabarrus County. Reedy Creek discharges to the Rocky River, which in turn
discharges to the Yadkin River. Clear Creek is relatively short (1.6 miles), lies entirely in
the McKee Creek watershed, and is largely contained within Cabarrus County. Clear
Creek flows approximately northwest to its confluence with McKee Creek. Some maps
show McKee Creek as “McKees Creek.” These two are the same.
TMDL for Fecal Coliform Bacteria: McKee and Clear Creeks June 2003

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Figure 1. McKee and Clear Creek Watersheds – in bright yellow

The Watershed Characterization System (WCS) could not delineate Clear Creek because
EPA’s Reach File 3 does not contain Clear Creek within the streams listed in the database.
Therefore, land use details for the Clear Creek watershed were approximated from
TMDL for Fecal Coliform Bacteria: McKee and Clear Creeks June 2003

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delineation from USGS Quadrangle Maps (Figure 2) using Terrain Navigator, a
MAPTECH program available through the EPA, Region 4 Library.

Figure 2. Clear Creek Subwatershed Boundaries

Water quality and quantity data were collected at multiple locations within this and
neighboring watersheds by different agencies. For the purposes of assessing TMDL
compliance, the McKee Creek stations MY7 (listed by the Division of Water Quality
(DWQ) as station Q7750000) and MCK-2 were used in evaluating water quality in McKee
Creek. Station MCK-2 was chosen as the evaluation point for the TMDL (see discussion
on page 25-26). Data collected at these stations are shown in Appendix A.

McKee and Clear Creeks are located in the lower portion of the Yadkin River Basin. The
drainage area of the combined watershed, as measured from the headwaters to the
confluence with Reedy Creek, is only 8.6 square miles. From its headwaters in
northeastern Mecklenburg County, North Carolina, McKee Creek flows northward from
the more urban area of northeast Charlotte into the more rural countryside of Cabarrus
County. Both McKee and Clear Creeks are listed as partially supporting the designated
use of secondary recreation. Water quality data are not available for Clear Creek and the
basis for this determination for Clear Creek is not documented. The TMDL for Clear
Creek is developed by comparing loads from similar land uses within the rest of the
McKee watershed.

Based on the Multi-Resolution Land Characteristic (MRLC) database of 1993, land uses
in the upper (southeastern) portions of the watershed are predominately urban. The lower
(northern) portions of the watershed, especially the Clear Creek Subwatershed, are
TMDL for Fecal Coliform Bacteria: McKee and Clear Creeks June 2003

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predominately forest and agriculture. The detailed land use distribution for the impaired
reaches is presented in Table 2 and shown spatially in Figure 3. This land use distribution
should be recognized as a “snapshot” of conditions that continue to change rapidly as
development accelerates, particularly in Mecklenburg County. These statistics are
presented as a base for future remediation and do not affect the calculation of the TMDL,
which is based entirely on stream water quality and flow data.

Table 2. Land Use Distribution in the McKee Creek Watershed

Land Use McKee Creek,
Upstream of SR
2808 (Sta.
Q7750000 or
MK7)
McKee Creek,
Upstream of
SR 1169 (Sta.
MCK-2)*
Clear Creek,
Sub-watershed
McKee Creek,
Downstream of
SR 1169
McKee Creek,
Entire
Watershed
(Acres) (%) (Acres) (%) (Acres) (%) (Acres) (%) (Acres) (%)
Bare Rock/Sand/Clay 12 0.4 36 0.9 1.2 0.2 0.8 0.1 38 0.7
Deciduous Forest 808 30 1102 26.5 88.7 14.8 109.3 14.6 1300 23.6
Emergent Herbaceous
Wetlands
1 0 2 0.1 0.6 0.1 1.4 0.2 4 0.1
Evergreen Forest 533 20 1020 24.5 239 39.9 301 40.1 1560 28.3
High Intensity
(Commercial/Industrial/
Transportation)
108 4 110 2.6 0 0 0 0 110 2
High Intensity
Residential
22 0.8 22 0.5 0 0 0 0 22 0.4
Low Intensity
Residential
346 13 364 8.7 0 0 0 0 364 6.6
Mixed Forest 341 13 522 12.5 77.9 13 98.1 13 698 12.7
Open Water 14 0.5 19 0.5 2.4 0.4 3.6 0.5 25 0.4
Other Grasses
(Urban/recreational;
e.g. parks, lawns)
56 2.1 56 1.3 0 0 0 0 56 1
Pasture/Hay 179 6.5 342 8.2 117.4 19.6 146.6 19.4 606 11
Row Crops 284 10 476 11.4 58.1 9.7 72 9.7 606.1 11
Woody Wetlands 31 1.1 95 2.3 13.8 2.3 18.2 2.4 127 2.3
Total 2735 100 4166 100 599.1 100 751 100 5516 100
* Includes area upstream of MK7

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Figure 3. Landuse in the McKee Creek Watershed

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For purposes of analysis these land uses are simplified as shown in Table 3.

Table 3. Simplified Land Use Distribution in McKee Creek Watershed

Land Use McKee
Creek,
Upstream of
SR 2808
(Sta.
Q7750000 or
MY7)
McKee
Creek,
Upstream of
SR 1169
(Sta. MCK-
2) to MY7
Clear Creek,
Sub-
watershed
McKee
Creek,
Downstream
of SR 1169
McKee
Creek, Entire
Watershed
(Acres) (Acres) (Acres) (Acres) (Acres)
Urban 532 20 0 0 552
Forest and
Brush
1726 1051 421 528 3726
Open Water 14 5 2 4 25
Pasture/Hay 179 163 117 147 606
Row Crops 284 192 58 73 607
Total 2735 1431 599 751 5516

1.3 Water Quality Target

The North Carolina fresh water quality standard for fecal coliform in Class C waters
(T15A: 02B.0211(3)(e)) states:

Organisms of the coliform group: fecal coliforms shall not exceed a geometric
mean of 200/100ml (MF count) based upon at least five consecutive samples
examined during any 30 day period [the “200 standard”], nor exceed 400/100 ml
in more than 20 percent of the samples examined during such period [the “400
standard”]; violations of the fecal coliform standard are expected during rainfall
events and, in some cases, this violation is expected to be caused by uncontrollable
nonpoint source pollution; all coliform concentrations are to be analyzed using the
membrane filter technique unless high turbidity or other adverse conditions
necessitate the tube dilution method; in case of controversy over results, the MPN
5-tube dilution technique will be used as the reference method.

All TMDLs include the establishment of in-stream numeric endpoints, or targets, used to
evaluate the attainment of water quality goals and designated use criteria. The target
represents the restoration objective to be achieved by implementation of load reductions
specified by the TMDL. For the TMDLs presented in this document, both fecal coliform
criteria were evaluated as targets. Initially, the 200 standard was selected as possibly
more stringent, and the first few iterations were based on this standard. Finally, the 400
standard was reevaluated and demonstrated to be by far the more stringent standard.
Consequently, the final calculations for this TMDL are based on the 400 standard.

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Secondary recreation is the designated use being addressed in this TMDL. Secondary
recreation is defined in NC’s standards (15A NCAC 2B .0202 (57)) as including “wading,
boating, other uses not involving human body contact with water, and activities involving
human body contact with water where such activities take place on an infrequent,
unorganized, or incidental basis.” It is believed that the streams addressed in this
document are used for secondary recreation by the local residents predominantly during
warm temperature, non-storm conditions. High stream flow activities such as white water
kayaking are not known to take place on a frequent and organized basis in these small
streams. Hence, the source assessment and TMDL allocation are focused on those sources
and conditions which represent the highest risk to human health during the times of
highest recreational use by the public.

2.0 WATER QUALITY ASSESSMENT

The North Carolina Division of Water Quality (DWQ) places waterbodies on the 303(d)
list using methodologies described in the basinwide management plans. McKee Creek
was rated partially supporting based on the monthly ambient monitoring data collected at
SR 2808 (ambient station number Q7750000) over a 5-year period. The basis for listing
Clear Creek as impaired for fecal coliform bacteria is not documented.

An intensive fecal coliform data collection effort was conducted by DWQ at two stations
in the McKee Creek watershed during April through June 2001, collecting three (3)
replicate samples weekly at two stations for eight (8) weeks. The replicates were collected
in three separate bottles, filled one after the other from the creek. The Mecklenburg
County Department of Environmental Protection (MCDEP) also collected fecal coliform
samples at MY7, the more upstream station on McKee Creek, coinciding with the State
Station Q7750000, from 1988 through 2001 (monthly samples through 1995 and quarterly
samples thereafter).

Because the North Carolina water quality standard (WQS) for fecal coliforms specify a
minimum of 5 samples per month to determine a violation of either the geometric mean or
arithmetic average, these TMDLs are based on the DWQ intensive survey of 2001 as the
only source of data from which to properly evaluate the standard.

The water quality assessment and subsequent TMDL analysis for this watershed
considered both fecal coliform criteria. However, the TMDL calculations are based on the
“400 standard” as the more stringent standard.

In Table 4, a geometric mean was calculated for each weekly sample, composed of three
replicates -- or observations. A series of running 30 day periods was generated, each
consisting of five samples, the minimum required by the WQS. EPA’s Ambient Water
Quality Criteria for Bacteria – 1986 states on page 16 that “based on a statistically
sufficient number of samples (generally not less than 5 samples equally spaced [emphasis
added] over a 30-day period . . . the geometric mean . . . should not exceed . . . .”
Although this reference is specifically to E. coli and enterococci, the inference is that the
same reasoning should apply to fecal coliform samples. This reasoning was used as the
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basis for determining that the series of three replicate observations, each of the series
separated by 7 days, constituted single samples, each collected a week apart. Reporting
the results of each sample as the geometric mean of three replicates was determined as the
correct way of presenting the data, and the two periods of 35 and 36 days encompassing 5
samples are considered acceptable for this analysis.

The complete list of samples collected during this survey is included in Appendix A.
Table 4 shows the data used to compare against the State fecal coliform standards.
Note: each sample is the geometric mean of triplicate observations.

Table 4. Intensive Survey Monitoring Data at McKee Creek Stations

Summary McKee Creek Fecal Coliform

Station Description
Station
Number*Dates
Number
of days
No.
Samples
Geometric
Mean
McKee Creek in Mecklenburg Co. at SR
2808 MY7
4/11/2001 to
5/9/2001 29 5 309
McKee Creek in Mecklenburg Co. at SR
2808 MY7
4/18/2001 to
5/16/2001 29 5 337
McKee Creek in Mecklenburg Co. at SR
2808 MY7
4/25/2001 to
5/30/2001 36 5 518
McKee Creek in Mecklenburg Co. at SR
2808 MY7
5/2/2001 to
6/5/2001 35 5 341

McKee Creek in Cabarrus Co. at SR 1169 MCK-2
4/11/2001 to
5/9/2001 29 5 155
McKee Creek in Cabarrus Co. at SR 1169 MCK-2
4/18/2001 to
5/16/2001 29 5 206
McKee Creek in Cabarrus Co. at SR 1169 MCK-2
4/25/2001 to
5/30/2001 36 5 260
McKee Creek in Cabarrus Co. at SR 1169 MCK-2
5/2/2001 to
6/5/2001 35 5 231
* Station MY7 is identical to Station Q7750000
See Appendix A for a complete listing of the data.

3.0 SOURCE ASSESSMENT

An important part of the TMDL analysis is the identification of sources of fecal coliform
in the watershed and an estimate of the amount of pollutant loading contributed by each of
these sources. Under the Clean Water Act, sources are broadly classified as either point or
nonpoint sources. This section of the TMDL describes the point and nonpoint sources of
fecal coliform in the watershed.

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3.1 Point Source Assessment

Under 40 CFR 122.2, a point source is defined as any discernable, confined, and discrete
conveyance from which pollutants are or may be discharged to surface waters. The
NPDES program regulates point source discharges. Point sources can be described by
two broad categories: 1) NPDES regulated municipal and industrial wastewater treatment
facilities; and 2) NPDES regulated industrial activities and MS4 discharges. A TMDL
must provide WLAs for all NPDES regulated point sources.
For the purposes of the McKee Creek TMDL, the WLA includes both: 1) continuous
discharge facilities (comprised of two (2) small, domestic wastewater “package” plants);
and 2) wet weather discharges from the MS4, extra territorial jurisdiction (ETJ) area of
Mecklenburg County, which includes the entire 4008 acres of the McKee-Clear Creek
watershed within Mecklenburg County as part of the Phase I MS4 NPDES Permit
(Rozell, 2003). In Cabarrus County none of the county was included in Phase I MS4 and
only the communities of Concord and Kannapolis (both outside the McKee Creek
watershed) are included in the initial Phase II MS4 jurisdiction. Therefore, MS4
jurisdiction does not apply to the Cabarrus County portion of the McKee-Clear Creek
watershed at this time. Within the 599-acre Clear Creek watershed it is assumed that
about 10 percent of the area (60 acres) are included in the Mecklenburg County ETJ and
subject to MS4 requirements.

3.1.1 Continuous Discharge NPDES Facilities

Continuous discharge facilities, as the name implies, discharge treated wastewater
continuously regardless of weather conditions. NPDES facilities that continuously
discharge effluent containing fecal coliform bacteria include sewage treatment plants
(STPs) and wastewater treatment plants (WWTPs). Two continuous discharge facilities
are located within the McKee Creek watershed: (1) Lamplighter Village East (NC
0025259) discharges to the headwaters of McKee Creek and (2) Bradfield Farms (a
subdivision) (NC 0064734) discharges to McKee Creek just downstream of the
Mecklenburg/Cabarrus county line (see Figure 1). Both facilities have permit limits for
effluent concentrations of fecal coliform equivalent to water quality criteria – a monthly
geometric mean of 200 cfu/100 ml and a daily maximum of 400/100 ml.

An analysis of effluent and instream data collected at these two facilities is presented in
Appendix B. The data for the years 1997 or 1998 through 2001 show that both
dischargers are well within their limits for the monthly geometric mean of fecal coliforms.
On a yearly basis, these permitted facilities discharged only 0.2 to 3.3 percent of their
permit limits. There were, however, several exceedances of the daily maximum of 400
cfu/100 ml in the effluent measurements. Furthermore, the available instream data (from
samples taken upstream and downstream of the discharges) suggest that additional upsets
or bypasses occurred at times when the effluent itself was not sampled. Often, when
upstream coliform concentrations exceeded water quality standards, the downstream
measurements actually showed lesser coliform counts, suggesting a chlorine addition to
the stream as the result of the discharges. This problem should become moot once the
interceptor sewers described in the Introduction (Section 1.0) are put into service.
TMDL for Fecal Coliform Bacteria: McKee and Clear Creeks June 2003

12

3.1.2 Wet Weather NPDES Facilities

Large and medium MS4s serving populations greater than 100,000 people are required to
obtain an NDPES storm water permit and are covered by a Phase I MS4 Permit. As of
February 2003, the City of Charlotte already has one MS4 permit regulated by the NPDES
program that extends to the City Limits plus some of the ETJ area of Mecklenburg
County, including the upper McKee-Clear Creek watershed. In addition, Mecklenburg
County is applying for an MS4 Phase II Storm Water Permit that will include the rest of
the county (Mecklenburg County, 2003).

The portion of the McKee-Clear Creek watershed in Cabarrus County is not affected by
current MS4 requirements (Rowell, 2003). Only the portion of the watershed within
Mecklenburg County is, therefore, included in the WLA portion of this TMDL.

3.2 Nonpoint Source and Wet Weather Point Source Assessment

Nonpoint sources of fecal coliform bacteria are diffuse sources that cannot be identified as
entering the waterbody at a single location. Wet weather point sources are similar except
they are conveyed to streams through pipes or open ditches in areas subject to MS4
NPDES permits. Both these sources generally involve land activities that contribute fecal
coliform bacteria to streams during rainfall runoff events. Nonpoint sources are all sources
not regulated by the NPDES program. The TMDL must provide a load allocation (LA) for
these sources and a waste load allocation (WLA) for the wet weather point sources.
Typical nonpoint and wet weather point sources of fecal coliform bacteria include:

• Agricultural runoff,
• Septic systems,
• Urban runoff, and
• Wildlife.

The Watershed Characterization System (WCS), a geographic information system (GIS)
interface, was used to display, analyze and compile spatial and attribute data (EPA,
2001). Available data sources included land use category, point source discharges, soil
type and characteristics, population data (human and livestock), digital elevation data,
stream characteristics and flow data. Queries of the WCS and ASWCC databases
provide the foundation of the watershed characterization for the McKee Creek watershed.
Fecal coliform production rates were estimated using the data from these queries and
literature values for fecal coliform concentrations from the various sources.

3.2.1 Runoff from Agricultural Lands

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As mentioned in the introduction, “This is a rapidly urbanizing watershed. I-485 is
being extended through both [the McKee and Clear Creek] . . . watersheds, so ‘all bets are
off’ on development. I would expect to see the potential sources of fecal coliform bacteria
shift from cattle, goats, and sheep to cats, dogs, geese and horses” (Testerman, 2002).
Agriculture is declining in the watershed. Rising land values and an ageing farm
population are combining to increase the rate of urbanization.

Horse farms are increasing in the watershed; and, especially if the land is rented, there is
little incentive for the tenants to invest in conservation measures. Moreover, there is
limited contact between agricultural officials and horse owners, and only a few cattle
owners work closely with the Soil and Water Conservation Districts. Exact livestock
counts are not available.

Because of these considerations, the analysis, shown below, of fecal coliforms in
agricultural runoff is presented only as an example that will need to be updated as an
implementation plan is developed. This analysis was based in part on the Watershed
Characteristic System (WCS) database made available to EPA in 2000, supplemented by
the estimate that there are probably as many horses as cows in the watershed at present.
The results are estimates only because of the rapidly changing land use in the watersheds.

High fecal coliform concentrations in surface water runoff may result from improper
application of animal waste on pastures and croplands and grazing livestock. Animal
populations are recorded by county and reported by the National Agricultural Statistic
Service (NASS, USDA, 1997). The livestock populations for the portions of the Counties
in the McKee Creek watershed are shown in Table 5. These livestock counts are based
on the NASS database and distributed according to Watershed Characterization System
(WCS) by pasture area, supplemented by the observation about horses, mentioned above.

TMDL for Fecal Coliform Bacteria: McKee and Clear Creeks June 2003

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Table 5. Livestock Distribution by County (NASS, 1997)

Livestock
Number of Animals per County (NASS, 1997) and Number in McKee
Creek Watershed (WCS Database-modified re [Testerman, 2002])
Mecklenburg Cabarrus McKee Creek Watershed
Animals
In County
Animals
in County
No. in watershed
Total Cattle 10052 13983 205
Beef Cow 2984 7643 84
Horses (assumed to = cattle in
McKee-Clear Creek watershed)
205
Hogs 26 5618 37
Sheep 91 379 4
Poultry * * *
• Although poultry numbers were not given directly in the database, related data
suggest current numbers of poultry (2002) may have increased. However, if the
poultry litter is spread properly on pasture for the relatively larger numbers of cattle,
the water quality impact from poultry may be relatively insignificant.

In the small McKee Creek watershed, cattle operations dominated the limited livestock
population, although at present they may be exceeded by the horse population. The total
number of 205 cattle in the watershed clearly indicates that Concentrated Animal Feeding
Operations (CAFOs) are not operating in the watershed. The total count of 205 cattle is
assumed to include calves and bulls as well as the count of beef cows, and is used for the
basis of cattle fecal coliform estimates. In summary, total cattle, horses, hogs, and sheep
are used for the livestock estimates of fecal coliform counts.

Cattle in the watershed are assumed to be grazing and not confined for long periods of
time.

Hogs are typically confined and the manure is generally collected in lagoons and applied
to land surfaces during the growing season. If the manure collected from confined
animals is not spread at agronomic rates, then a portion of the fecal coliform present in the
manure could wash off to the stream during a storm event. This does not appear to be an
issue if the total count of 37 hogs is representative, and it is reported that the hog operation
in the basin is decreasing in size (Testerman, 2002).

Table 6 gives the estimates of livestock numbers in the various McKee Creek
subwatersheds based on the distribution of pasture land. Table 7 gives typical livestock
fecal production rates.
TMDL for Fecal Coliform Bacteria: McKee and Clear Creeks June 2003

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Table 6. Estimated Distribution of Livestock in the McKee Creek Watershed

Agricultural Animals
REACH ID CATTLE SWINE (HOGS) HORSES SHEEP
MY7 61 11 61 1
MCK-2 55 10 55 1
Clear Ck 40 7 40 1
DownStrm 50 9 50 1
TOTAL 205 37 205 4

Table 7. Fecal Production Rates of Various Livestock (USEPA, 2000)

Mean
Animal FC (#/animal/day)
Cattle 4.57E+09
Dairy
cow 1.03E+11
Beef
cow 1.05E+11
Hog 1.02E+10
Sheep 1.41E+10
Horse 4.19E+08

3.2.2 Leaking Septic Systems, the Sewer System, and Urban Runoff

Failing septic systems can contribute fecal coliform bacteria into the waterbody. The
number of septic systems is based on the NC Division of Environmental Health (DEH)
statistics on sewer practices for the counties in the watershed (NCDEH 2003). Each
household on septic systems was assumed to house 2.5 people.

The Mecklenburg County Health Department has estimated the local septic system failure
rate to be 1%, (Mecklenburg, 2002), citing the following reasons:

• In general, Mecklenburg County soils are highly conducive to septic system
operation;
• Areas where soil types are not conducive to septic system operation have been
excluded from septic system use and existing systems in these areas have been
targeted for integration to the CMU sanitary sewer system; and,
• Mecklenburg County has been a leader in enacting septic system regulation in North
Carolina, which has prevented the installation of sub-standard systems.

TMDL for Fecal Coliform Bacteria: McKee and Clear Creeks June 2003

16
However, for perspective – since this is much lower than the 20% failure rate often
assumed by EPA, other stakeholders including Charlotte Mecklenburg Utilities, have
questioned the accuracy of a 1% failure rate for these septic systems. Some personal
observations and anecdotal evidence appear to indicate the likelihood of a much higher
failure rate (Testerman, 2002), particularly since the soil types in the McKee watershed
typically have lower percolation rates than most of the others in Mecklenburg and
Cabarrus Counties. However, because there is no documentation of a local investigation
to establish a more accurate or reproducible value exists; therefore, a 1% failure rate was
assumed in this TMDL.

No direct accounting of the number of septic systems in use in the TMDL watersheds was
available. The Watershed Characterization System (WCS) database gave an estimate of
11,176 people on septic systems (or about 4470 septic systems) in this watershed based
1997 US Census Bureau population estimates. However, NCDEH statistics, although
based on older 1990 census data, indicated a much lower number. Based on an area-
weighted average of 0.09 septic/acre derived from NCDEH statistics, there are nearly 500
septic systems in this 5500-acre watershed. The true number probably lies somewhere in
between but closer to the lower estimate based on NCDEH.

Estimated fecal coliform load calculations are based on NCDEH numbers (Table 8), but
should be viewed in light of the uncertainty in the number of septic systems in the
watershed as well as the assumed failure rate. Since these results are not used directly in
the TMDL calculations, this assumption does not effect the TMDL determination and
allocation.

Calculations of the loadings are provided in Appendix D. Horsley and Witten (1996)
estimate septic systems to have an average daily discharge of 70 gallons/person-day with
concentrations ranging from 104 to 107 counts/100mL. The loads presented in Table 8 are
do not account for die-off or attenuation of fecal coliforms between failing septic systems
and the stream, assuming discharge directly into the stream. In general, failing septic
systems discharge overland for some distance, where a portion of the fecal coliform may
be absorbed on the soil and surface vegetation before reaching the stream. This
assumption of direct discharge to the stream contributes to the margin of safety for the
TMDL.

Table 8. Estimated Loads from Leaking Septic Systems

Estimated # Stream
Septic # failing Load
Subwatershed Acres Systems septics cfu/day
MY7 2735 246 3 1.66E+08
MCK-2 1431 129 1 8.63E+07
Clear Ck 599 54 1 3.32E+07
DownStrm 751 68 1 4.65E+07
Total McKee
Watershed 5516 3.32E+08
TMDL for Fecal Coliform Bacteria: McKee and Clear Creeks June 2003

17
Notes:
1. Estimated number of septic systems in a subwatershed equals area multiplied
by septic density of 0.09 septic systems per acre (DEH 1999).
2. Loadings based on an effluent concentration of 104 counts/100mL and a daily
discharge of 70 gal/person/day
3. See Appendix D for details behind this summary table.

In urban areas serviced by a wastewater treatment facility, leaking sewer lines could
contribute to water quality impairment. The upper portion of the McKee watershed is
sewered and serviced by two small facilities discussed in Section 3.1.1 with a total design
flow of 0.53 million gallons per day (mgd). However, the actual recorded flow at both
plants, combined, was only 0.18 mgd in 2001. Because of this small flow and without any
evidence to the contrary, it is assumed for this TMDL that fecal coliform contributions
from the sewer system are negligible. There are suggestions, however, in the data in
Appendix C that fecal coliform levels in the stream are sometimes very high. This could
be caused by direct discharges to the steam, leaking septic systems during heavy rains, or
infiltration/inflow problems in the sewer lines with subsequent bypasses at the treatment
plants. These possibilities need to be investigated during the implementation phase
following this TMDL.

Urban runoff was calculated using the rates of accumulation per acre in Table 9. The
results are shown in Table 10. The areas upstream of Station MCK-2 had to be lumped
together to allow load allocations to be developed that are compatible with the two waste
load allocations for the point sources, as discussed in Section 5.5.

Table 9. Urban Coliform Accumulation Rates (EPA, 2000)

Land Use Coliform
Accumulation
in cfu/acre/day
Heavy
Residential/
Institutional/
Recreational 2.00E+07
Light Residential 1.03E+07
Commercial 6.21E+06

TMDL for Fecal Coliform Bacteria: McKee and Clear Creeks June 2003

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Table 10. Urban Coliform Accumulation in the McKee Creek Watershed

* Includes area upstream of MK7

3.2.3 Wildlife

Wildlife deposit waste containing fecal coliform bacteria onto the land where it can be
transported during a rainfall runoff event to nearby streams. Fecal coliform loading rates
due to wildlife are assumed to contribute to the background loading in the stream. In the
literature, background loadings of fecal coliform bacteria range from 15 to 450,000
counts/100mL (EPA, 2001). For purposes of assigning a load to background conditions in
this rapidly urbanizing area where the wildlife population is fairly low, a relatively low
concentration of 50 counts/100ml is assumed to be reaching the stream. This creates the
loadings shown below in the summary in Section 3.2.4. These calculations used the
average study-period flows of 1.86, 0.268, 0.336, and 2.47 cfs, respectively, for McKee
Creek at MCK-2, Clear Creek, the portion of McKee Creek downstream of MCK-2, and
the total for McKee Creek at its mouth.

Urban Land
Use
McKee Creek, Upstream of
SR 2808 (Sta. Q7750000 or
MK7)
McKee Creek,
Upstream of SR 1169
(Sta. MCK-2
Upstream of SR
1169)*
(Acres) cfu/day (Acres) cfu/day
Commercial 108 6.71E+08 110 6.83E+08
High Density
Development
78 1.56E+09 78 1.56E+09
Light
Residential
346 3.57E+09 364 3.75E+09
Total
Urban
532 5.80E+09 552 5.99E+09

TMDL for Fecal Coliform Bacteria: McKee and Clear Creeks June 2003

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4.0 ANALYTICAL APPROACH

Establishing the relationship between instream water quality and sources of fecal coliform
is an important component of the TMDL. It provides the relative contribution of the
sources, as well as a predictive examination of water quality changes resulting from
varying management options to meet the water quality standard. This relationship can be
developed using a variety of techniques ranging from qualitative assumptions based on
scientific principles and literature values to numerical modeling techniques.

4.1 Selection of Analytical Approach

A mass balance approach coupled with a series of Flow Duration and Load Duration
curves (ASIWPCA, 2002; Kansas, 2002; Sheely, 2002) was used to calculate the TMDLs
for the impaired streams. Limited water quality data and the small size of the watersheds
of the listed tributaries warranted a simplified approach. A mass balance approach is
appropriate for small watersheds with limited water quality data. Utilizing the
conservation of mass principle, loads can be calculated using the following relationship:
Load (counts/day) = (Concentration, counts/100mL) × (Flow, cfs) × (Conversion Factor)
Where the conversion factor = 2.447 x 107 to obtain units of counts/day

4.2 Analytical Setup

The McKee Creek watershed was delineated into 4 subwatersheds – [1] upstream of State
Road 2808 (Station MY7 or Q7750000), [2] upstream of State Road 1169 (Station MCK-
2), [3] the Clear Creek watershed, and [4] downstream of Station MCK-2, excluding the
Clear Creek watershed. Except for Clear Creek, the delineations were based on Reach
File 3 (RF3) stream coverage, Digital Elevation Model (DEM) of the area, location of
water quality monitoring stations, and the road network which was assumed to be
primarily along ridge tops (see Figures 1and 2). The farthest downstream point of the
delineation was the confluence of McKee Creek with Reedy Creek. The delineated
watershed was used in conjunction with the WCS to quantify potential pollutant sources.
Since Clear Creek was not included in RF3, it was delineated from USGS maps and
correlated by land use.

The TMDL for McKee Creek is calculated in three steps, the first two using “the 200
standard,” and the final step using “the 400 standard” which proved to be more stringent.
The initial calculation is based on the subwatershed area upstream from Station MY7, at
State Road 2808. This calculation had to be followed with a calculation for the combined
watershed area upstream of State Road 1169 (Station MCK-2), and then for MCK-2
using “the 400 standard.” This will be discussed further in the sections to follow.

TMDL for Fecal Coliform Bacteria: McKee and Clear Creeks June 2003

20
Since there was no water quality or flow data available for Clear Creek, the TMDL for
Clear Creek is based on a comparison of land use with that of the larger McKee Creek
subwatershed upstream of MCK-2, applying the same percentage reduction for each
individual land use.

River flow influences the instream fecal coliform concentration. Flow was not measured
on McKee or Clear Creeks. Mean daily flows in McKee Creek were estimated by
multiplying the flow at the Irwins Creek gage by the ratio of the drainage areas at the
sites. The USGS operates a continuous stream flow gage on Irwins Creek at State Road
3168 (USGS 0214657975) located just east of the watershed divide from McKee Creek.
The current period of record for daily flows in Irwins Creek was obtained from May 12,
2000, through May 12, 2002. The selected flow at the USGS gage on Irwins Creek and
an estimate of flows at sampling station MY7 on McKee Creek are provided in Appendix
E, together with a calculation of the daily fecal coliform loads at 200 cfu/100 ml in order
to calculate the Load Duration Curves discussed below. The corresponding flows and
loads at MCK-2 are not presented as they are similar, except proportionally greater.

4.3 Analytical Results

The Kansas TMDL Curve Methodology (Kansas, 2002) was used to evaluate the
available data. First flow duration curves were developed from a ranked listing of 731
values of calculated daily flows at Stations MY7 and MCK-2, as shown below in Figures
4 and 5. The ranked data are listed in for Station MY7 in Appendix F; the data for MCK-
2 are similar.
TMDL for Fecal Coliform Bacteria: McKee and Clear Creeks June 2003

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Flow Duration -- McKee Creek at MY7
0
10
20
30
40
50
1 10 100
Percent of Days Flow Exceeded
Fl
o
w

i
n

c
f
s

Figure 4. Flow Duration Curve for MY7

Flow Duration: McKee Creek at MCK-2
0
10
20
30
40
50
60
70
80
1 10 100
Percent of Days Flow Exceeded
Fl
o
w

i
n

c
f
s

Figure 5. Flow Duration Curve for MCK-2

Note that although the Y axes in these graphs are different scales, the pattern is the same
in both because the McKee Creek flows were calculated by drainage area ratios from the
flows in Irwins Creek. This method of calculating flows is based on the assumption that
the hydrologic characteristics of the watersheds are the same – in terms of size, slope,
channel characteristics, and groundwater interactions (Sheely, 2002). It would be best to
TMDL for Fecal Coliform Bacteria: McKee and Clear Creeks June 2003

22
check this assumption by correlating flow data in the various watersheds, but, since no
flow data were available for McKee Creek, this correlation could not be done.

It is obvious from these curves that base flows (flows exceeded more than 90 percent of
the time) are very low (0.08 and 0.12 cfs, respectively, at MY7 and MCK-2); and that
high flows, particularly those exceeded 5 percent of the time or less, give a more
scattered or unpredictable plot that does not fit a smooth curve.

Next, these data were translated into Load Duration (TMDL) Curves by multiplying the
flow in cubic feet per second (cfs) by the water quality standard (200 cfu/100 ml – or 400
cfu/100 ml) and a conversion factor. See Figures 6 and 7 for the Load Duration Curves
for McKee Creek at MY7 and MCK-2 based on the 200 standard. Figure 8 shows the
Load Duration Curve for MCK-2, based on the 400 standard. Appendix E shows the
underlying data for Station MY7; the data for MCK-2 are similar though proportionally
larger. Appendix F shows the ranked data for the Load Duration Curve at MCK-2 based
on the “400 standard.”

In generating these curves an approximation was used that might have to be modified for
future TMDLs using Load Duration Curves for fecal coliforms. In these curves, the
geometric mean of the fecal coliform data for the past 30 days was matched to the flow at
the end of that 30 day period. Normally for these curves, instantaneous or daily water
quality data are matched to instantaneous or daily flow. Other choices could be made for
matching the coliform data to flow, but the calculations would yield the same results if the
match is used consistently.

The second set of calculations below, based only on concentration, confirm this point
since they give the same percent reductions as the first set of calculations based on load.

These curves confirm that most of the high coliform problems in McKee Creek are related
to nonpoint sources, as discussed below.

Load duration curves provide a variety of information, including:

1. They help to identify the issues surrounding the problem (of not meeting WQS) and
help to differentiate between point and nonpoint source problems. If plots of current
conditions lie above 75% on the “x” axis, and especially above 90%, the problems are
most likely associated with point sources. Below 75% is associated primarily with
nonpoint sources, and below 10% is usually considered to represent unique high flow
problems that probably exceed feasible management remedies.
2. They show seasonal water quality effects. Data that cluster within a narrow range of
the percent of flow or load exceeded can be associated with the season when that
range of flow typically occurs.
3. They address the frequency of deviations (how many samples lie above the curve vs.
those that plot below); the magnitude (how far the deviations plot away from the
curve); and duration (potentially how long the deviation is present).
4. They can be used to compare water quality conditions between multiple watersheds.
5. They can aid in establishing the level of implementation needed.
TMDL for Fecal Coliform Bacteria: McKee and Clear Creeks June 2003

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Load Duration (TMDL) Curve -- McKee Creek at
MY7 for 200 cfu/100 ml
0.00E+00
5.00E+10
1.00E+11
1.50E+11
2.00E+11
2.50E+11
1 10 100Percent of Days Load Exceeded
cf
u

p
e
r

d
a
y
Series1
Series2

Figure 6. Load Duration or TMDL Curve for MY7 (“200 Standard”).
Series1 data is the calculated maximum permissible load at 200 cfu/100 ml.
Series2 data is the actual loading calculated from intensive survey data.

Load Duration (TMDL) Curve -- McKee Creek at MCK-2
for 200 cfu/100 ml
0.00E+00
1.00E+11
2.00E+11
3.00E+11
4.00E+11
1 10 100
Percent of Days Load Exceeded
cf
u

p
e
r

d
a
y
Load at 200
cfu/100 ml
Actual Load at
Sampling

Figure 7. Load Duration or TMDL Curve for MCK-2 (“200 standard”).

TMDL for Fecal Coliform Bacteria: McKee and Clear Creeks June 2003

24
Load Duration (TMDL) Curve -- McKee Creek at MCK-2 for
400 cfu/100 ml
0
1E+11
2E+11
3E+11
4E+11
5E+11
6E+11
7E+11
8E+11
1.0 10.0 100.0
Percent of Days Loads Were Exceeded
Lo
a
d

i
n

c
f
u
/
d
a
y
Load at 400 cfu/100 ml
Daily Load When
Sampled
.

Figure 8. Load Duration or TMDL Curve for MCK-2 (“400 standard”).

The three highest sample results are labeled in Figure 8 and associated with the plotted
results of their calculated loads. Note that the higher flows (represented by points more
to the left) when multiplied with the indicated concentrations (times the appropriate
conversion factor) generated higher loads even though, in this case, the associated
concentrations were slightly less toward the left. The left-most sampled load is
associated with the highest 4th percentile of high flows. As a rule of thumb, all loads
associated with up to the 10th percentile of high flows are probably beyond the capability
of conventional treatment and BMPs to control. The remaining loads lie from just under
the 20th percentile to just under the 50th percentile, representing wet weather loads
associated with nonpoint runoff and wet weather point source (MS4) runoff. These are
the conditions that control strategies must address. As indicated below, the highest
concentration (2714 cfu/100 ml) is excluded by the “400 standard,” so the percent
reduction is calculated from the load represented by the 2379 cfu/100 ml sample, which
is the highest point encompassed within the “400 standard.”

Figures 9, 10, and 11 are enlargements of the critical portions of these load duration
curves. The load reduction target, in each calculation, is 90% of the value of the TMDL
curve lying directly under the data point requiring the greatest reduction. This gives an
explicit Margin of Safety (MOS) of 10%. Note that the data (Series 2) lies roughly
between 30 and 50 percent of the days the load is exceeded, which indicates that nonpoint
sources are the most significant.

TMDL for Fecal Coliform Bacteria: McKee and Clear Creeks June 2003

25

Load Duration (TMDL) Curve -- McKee Creek at
MY7 for 200 cfu/100 ml
0.00E+00
5.00E+09
1.00E+10
1.50E+10
10 100
Percent of Days Load Exceeded
cf
u

p
e
r

d
a
y
Series1
Series2
Load Reduction Target
LOAD REDUCTION GOAL = 65%

Figure 9. Enlargement of the Load Duration Curve at MY7 for the “200
Standard.”
Series1 data is the calculated maximum permissible load at the WQS (the TMDL
load).
Series2 data is the intensive survey data calculated according to the WQS (the
actual load).
The Load Reduction Target is 90% of the TMDL value under the data point
requiring the maximum percent reduction, equivalent to the load calculated for
180 cfu/100 ml.

The load reduction calculation for MY7 (with units in cfu/day) is:

9.10E+09 – (3.50E+09 x 0.90) x 100 = 65%
9.10E+09
Note that this calculation is equivalent to a calculation based solely on concentration
(with units in cfu/100 ml):

518 – 180 x 100 = 65%
518
where 518 cfu/100 ml is the highest geometric mean of samples collected within a 30-day
period, and
TMDL for Fecal Coliform Bacteria: McKee and Clear Creeks June 2003

26
180 is the load reduction goal, which is 90 percent of the water quality standard of 200
cfu/100 ml.

Initially it appeared that this 65 percent reduction would require the most stringent
pollution control for the watershed. Yet, because (1) this is the most upstream station, (2)
the affected watershed is quite small, and (3) the upstream wasteload allocation for
Lamplighter Village East is very small, the lesser percent reduction required at MCK-2
generated a negative load allocation for the portion of the watershed between MCK-2 and
MY7 if the MY7 calculations were used. Once this was discovered, it was clear that the
TMDL and its components must be calculated on the entire watershed upstream of MCK-
2 without a separate calculation for MY7.

Load Duration (TMDL) Curve -- McKee Creek at MCK-2
for 200 cfu/100 ml
0.00E+00
2.00E+09
4.00E+09
6.00E+09
8.00E+09
1.00E+10
10 100
Percent of Days Load Exceeded
cf
u

p
e
r

d
a
y
Load at 200
cfu/100 ml
Actual Load at
Sampling
Load Reduction
Target
LOAD REDUCTION GOAL = 31%

Figure 10. Enlargement of the Load Duration Curve at MCK-2 for the “200
Standard.”
The Load Reduction Target is 90% of the TMDL value under the data point
requiring the maximum percent reduction.

The load reduction calculation for MCK-2 (based on the geometric mean, with units in
cfu/day) is:

6.90E+09 – (5.33E+09 x 0.90) x 100 = 31%
6.90E+09

TMDL for Fecal Coliform Bacteria: McKee and Clear Creeks June 2003

27

Note again that this is equivalent to a calculation based solely on concentration (with
units in cfu/100 ml):

260 – 180 x 100 = 31%
260

This load reduction at MCK-2, based on the 200 cfu/100 ml geometric mean, next had to
be compared to the reduction required to meet the alternative water quality standard of
400 cfu/100 ml, not to be exceeded more than 20% of the time.

Load Duration (TMDL) Curve -- McKee Creek at MCK-2 for
400 cfu/100 ml
0.E+00
1.E+10
2.E+10
3.E+10
4.E+10
5.E+10
6.E+10
7.E+10
8.E+10
10 100
Percent of Days Loads Were Exceeded
Lo
a
d

i
n

c
f
u
/
d
a
y
Load at 400 cfu/100 ml
Daily Load When Sampled
Reduction Target
.Reduction =85%

Figure 11. Enlargement of the Load Duration Curve at MCK-2 for the “400
Standard,” which must be met by at least 80% of the samples within a 30-
day period.
The Load Reduction Target (large triangle) is 90% of the TMDL value under the data
point requiring the maximum percent reduction.

This load reduction calculation for MCK-2 (after discounting up to, but not more than
20% of the samples, with units in cfu/day) is:

6.335E+10 – (1.0656E+10 x 0.90) x 100 = 85%
6.335E+10

TMDL for Fecal Coliform Bacteria: McKee and Clear Creeks June 2003

28
Note again that this is equivalent to a calculation based solely on concentration (with
units in cfu/100 ml):

2378 – 360 x 100 = 85%
2378

Meeting the alternative water quality standard of 400 cfu/100 ml, not to be exceeded
more than 20% of the time, is clearly the more stringent standard in this case. The
TMDL must, therefore, be based on an 85 percent reduction in fecal coliforms.

In Figure 11, the higher concentration of 2714 cfu/100 ml was excluded based on the
concept of excluding the highest 20 percent of the data points for the “400 standard.”
This concentration represents a smaller load than the lesser concentration of 2379 cfu/100
ml because the corresponding flow associated with the 2714 data point is less. Even
though this load is less than that used for the TMDL calculation, a percent reduction from
the 2714 data point to the point below it representing 90 percent of the TMDL curve
would result in a load reduction calculation of 86.7 percent. Since this data point is
excluded, the lesser reduction of 85% is used for this TMDL.

A Load Duration Curve was not developed for MY7 for the “400 standard” because the
same considerations that led to selecting MCK-2 as the station to develop the TMDL
based on the “200 standard” would also apply to the TMDL based on the “400 standard.”

4.4 Uncertainty

The lack of site specific information within this watershed required that literature values
be used to calculate fecal coliform loadings from the various land uses. Because the
uncertainty associated with any generalized approach is expected to be large, these results
should be interpreted in the light of input limitations and prediction uncertainty. Simple
approaches such as the Load Duration Curve can be used to guide initial decision making;
but continued observation of the watershed and stream, as fecal coliform controls are
implemented (e.g., exclusion fencing, leaky sanitary sewer repairs), is the best approach
for determining the appropriate level of management.

5.0 TOTAL MAXIMUM DAILY LOAD (TMDL)

The TMDL is the total amount of pollutant that can be assimilated by the receiving water
body while achieving water quality standards. The components of the TMDL are the
Wasteload Allocation (WLA), the Load Allocation (LA) and a margin of safety (MOS).
The WLA is the pollutant allocation to point sources while the LA is the pollutant
allocation to natural background and nonpoint sources.

The TMDL for the Upper McKee Creek watershed is calculated using the water quality
criterion of 400 cfu/100 ml and the calculated mean flow of 1.86 cfs at Station MCK-2 on
TMDL for Fecal Coliform Bacteria: McKee and Clear Creeks June 2003

29
McKee Creek during the intensive survey period of 4/11/2001 through 6/5/2001. (Note
that the mean flow during the intensive survey period is not the same as the median flow
of 0.65 cfs in the flow-duration calculations, which included a much longer time period.)
Using the conversion factor of 24,464,665, times 1.86 cfs, times 400 cfu/100 ml, the
TMDL at MCK-2 is 1.82E+10 cfu/day.

The TMDLs for Clear Creek, the other subwatersheds, and for the entire McKee Creek
watershed are calculated by area ratios as shown in Table 11.

Table 11. Calculation of Allowable TMDL Loads, McKee Creek – Clear Creek
Watershed

TMDL loads based on the 400 standard.
Watershed Area TMDL
Units Acres Cfu/day

MCK-2* 4166 1.82E+10
Clear Creek 599 2.62E+09
Lower McKee 751 3.28E+09

Total McKee 5516 2.41E+10

* The figures for MCK-2 include the values for
MY7

5.1 Waste Load Allocation (WLA)

Where MS4 facilities are involved, the WLA component is divided into two components,
a continuous discharge load and a wet weather load. In this case, the Mecklenburg County
portion of the watershed is treated as a wet weather, MS4 facility, subject to a waste load
allocation, in addition to the two, small sewage treatment plants (STPs) treating sewage
from residential subdivisions. Lamplighter Village East (NPDES Permit #NC0025259) is
located in the headwaters upstream of MY7 and Bradfield Farms (NPDES Permit
#NC0064734) is located just above Station MCK-2 on McKee Creek.

Both NPDES permits for these sewage treatment facilities include a monthly average
geometric mean limit of 200 cfu/100 ml as well as a daily maximum limit of 400 cfu/100
ml. Even though these facilities operate at only a fraction of the permitted flows and are
well within the monthly geometric mean limit of 200 cfu/100 ml, both facilities
occasionally exceeded their daily maximum limits. The waste load allocation for each
facility is calculated from its permitted flow in million gallons per day (mgd), times 400
TMDL for Fecal Coliform Bacteria: McKee and Clear Creeks June 2003

30
cfu/100 ml, times the conversion factor of 3.785E+07. The daily operation of the facilities
should be monitored to ensure they meet the daily maximum limits.

The calculations and results are shown in Table 12, giving a total of 8.02E+09 cfu/day for
this “continuous flow” portion of the WLA.

This portion of the wasteload allocation may not be relevant in the near future. The
Cabarrus County Water and Sewer Authority Board, in a joint venture with Charlotte
Mecklenburg Utilities, has approved plans for 110,000 linear feet of interceptor sewers to
be placed along Reedy and McKee Creeks. These will range from 30-60 inches in
diameter. A pump station will be constructed to pump the resulting interceptor flow into
the existing Rocky River 48 inch force main, taking the wastewater completely out of the
McKee Creek watershed. The Mecklenburg portion of the design is completed, as of
November, 2002, and the Cabarrus portion will be designed in the near future. The plans
are contingent upon approval by the City of Charlotte. (See Furr, 2002.) It is assumed
that flows to both existing facilities for Lamplighter Village East and Bradfield Farms
will be diverted into these interceptors, allowing a greater allocation to the wet weather
point sources and the nonpoint sources in the watershed.

Table 12. Continuous Flow Wasteload Allocation (CFWLA) Calculations

The wet weather portion of the WLA is calculated in conjunction with the LA in Section
5.2 below.

Impacted Permitted Flow
Monthly Geo-
metric Mean
Permit Limit
WLAs
(converted
to a daily
basis)1
Facility NPDES # Watershed (MGD) (counts/100mL) (counts/day)
Lamplighter
Village East NC0025259 McKee Creek 0.07 400 1.06E+09

Bradfield
Farms
(residential
subdivision) NC0064734 McKee Creek 0.46 400 6.96E+09
Total flow in cfs = 0.82044 Total CFWLA: 8.02E+09

NOTES: 1. Load = Q (mgd) * Conc. (counts/100mL) * conversion factor
conversion factor = (1,000,000 gal/day *3.785 L/gal *1000 ml/l*cfu/100 ml) = 3.785E+07

Example Calculation for Bradford Farms:
Load = 0.46E+06 gal/day * 400 counts* 3.785E+07 = 6.96E+09 cfu/day
TMDL for Fecal Coliform Bacteria: McKee and Clear Creeks June 2003

31
5.2 Wet Weather Wasteload Allocation (WetWxWLA) Load Allocation (LA)

The Wet Weather Wasteload Allocation (WetWxWLA) Load Allocation (LA) for the
McKee-Clear Creek watershed are calculated using the water quality criterion and an
estimate of mean flow (1.86 cfs) during the intensive survey. The water quality criterion
of 400 cfu/100 ml, not to be exceeded by more than 20% of the samples during a 30-day
period, was used as the more conservative of the two fecal coliform criteria for the data
available for McKee Creek. The WetWxWLAs plus the LAs (combined) are the
differences between the TMDLs for each subwatershed, less the margins of safety
(MOSs), less the continuous flow waste load allocations (CFWLAs).

Because the continuous flow point source upstream of MY7 is much smaller than that just
upstream of MCK-2, it was necessary to develop the TMDL based on the calculated flow
and measured fecal coliform concentrations at Station MCK-2. See Table 13 in Section
5.5, “Allocation,” below.

Since there are no continuous flow point source discharges in Clear Creek the combined
WetWxWLA + LA equals the TMDL, less the MOS. Since there are no additional
continuous flow point sources in the McKee watershed, the combined WetWxWLA + LA
for the entire McKee Creek watershed is proportionally larger than that calculated at
MCK-2. These combined wet weather loads are shown in Table 13 in Section 5.5,
together with their separate values, which are proportional to the areas within and outside
the MS4 jurisdictions.

5.3 Margin of Safety

The margin of safety (MOS) is part of the TMDL development process. There are two
basic methods for incorporating the MOS (USEPA 1991):

• Implicitly incorporating the MOS using conservative model assumptions to develop
allocations, and
• Explicitly specifying a portion of the total TMDL as the MOS; using the remainder
for allocations.

An implicit MOS is also incorporated into the TMDL by using conservative assumptions
in calculating the TMDL components: (1) Leaking septic systems are assumed in this
TMDL to discharge directly into the stream, whereas septic systems typically discharge
through the soil layer where the fecal coliforms absorb to the soil. (2) The WLA for
continuous discharge facilities (the two “package” sewage treatment plants) is based on
their permit limits for fecal coliforms. In general, these facilities use some type of
disinfection and the concentration of fecal coliform in the effluent should be much less
than the permit limits. (3) Calculating the needed overall load reduction from the highest
data point – after excluding the top 20 percent of the samples, as specified in the “400
standard” – is very conservative, particularly given the large variation inherent in fecal
TMDL for Fecal Coliform Bacteria: McKee and Clear Creeks June 2003

32
coliform analyses. (4) This TMDL is based on the “400 standard,” – not to be exceeded
more than 20% of the time, which was proved to be much more conservative than the
“200 monthly geometric mean standard.”
The MOS is also incorporated explicitly in the TMDL by applying a 10 percent reduction
to the instream standard. Using the applicable standard of 400 cfu/100 ml, the MOS is set
to 10% of the standard, or 40 cfu/100ml, giving a load reduction target of 360 cfu/100 ml,
and the allowable loads are calculated proportionally. The load assigned to the MOS is
based on mean flow and the MOS concentrations as shown below in Table 13.

5.4 Seasonal Variation and Critical Period

In developing TMDLs for listed waterbodies, seasonality is typically addressed by
assuming either low flow (i.e., 7Q10) for point source dominated reaches or wet weather
conditions for nonpoint source areas. For fecal coliforms, the critical period is generally a
dry period followed by a rainfall event. This allows bacteria to accumulate on the ground
and a greater concentration available to be transported to the stream during a rainfall
event.

For the listed streams, an examination of the data in Appendix C (Upstream-Downstream
Data) from 4/1/1998 through 7/6/2000 shows that high, instream fecal coliform levels
were common throughout the year, with no particular season representing a worst case
period. The NC DENR, Division of Water Quality, from April 10 to June 5, 2001,
conducted an intensive survey at McKee Creek. Since this survey provides the only
available source of sufficiently frequent sampling to calculate actual violations of the fecal
coliform standards, these data are assumed to be representative and were used as the basis
for calculations in this TMDL.

For an additional perspective, Figure 12, below, shows the calculated flows in McKee
Creek from May 2000 to May 2002, which includes the period of the intensive survey.
Note that the equivalent chart for Station MCK-2 would be identical except that the y-axis
will read higher by a factor of 1.52, which is the ratio of the respective areas upstream of
MCK-2 and MY7.
TMDL for Fecal Coliform Bacteria: McKee and Clear Creeks June 2003

33

McKee Creek Flow at MY7
0
10
20
30
40
50
60
5/
1
2
/
2
0
0
0
7/
1
2
/
2
0
0
0
9/
1
2
/
2
0
0
0
11
/
1
2
/
2
0
0
0
1/
1
2
/
2
0
0
1
3/
1
2
/
2
0
0
1
5/
1
2
/
2
0
0
1
7/
1
2
/
2
0
0
1
9/
1
2
/
2
0
0
1
11
/
1
2
/
2
0
0
1
1/
1
2
/
2
0
0
2
3/
1
2
/
2
0
0
2
5/
1
2
/
2
0
0
2
Date
Fl
o
w

i
n

c
f
s

Figure 12. Daily Flows at McKee Creek
Calculated from Irwins Creek Flows for the Period May 12, 2000, through May 12, 2002.
The double-headed arrow shows the period of the Intensive Survey.

The average flows shown in Figure 13 are calculated from the Mallard Creek watershed
(22,144 acres) that is much larger than either the watersheds for McKee Creek (2735
acres) or Irwins Creek (5357 acres) and is shown only to illustrate seasonality. The
relatively higher flows shown in Figure 13 are not considered representative of McKee
Creek, but are useful, nevertheless, for examining seasonality. A 7-year period of record
from the Mallard Creek watershed, located slightly north of McKee Creek, is the basis for
Figure 13, which indicates that the months of April to June generally include both
moderate and low flow periods. However, the flows during the intensive survey were
greater than average, as indicated by the Flow Duration and Load Duration curves in
Figures 4 to 9, indicating that flows during the intensive survey sampling were only
exceeded 16-26% of the time. For Figure 13, as with Figure 12, the equivalent graph for
MCK-2 would have the same pattern with the y-axis proportionally greater.

TMDL for Fecal Coliform Bacteria: McKee and Clear Creeks June 2003

34
Average Flow in McKee Creek at Station MY7,
Calculated by Area Ratios from Mallard Creek
Watershed
0
1
2
3
4
5
6
7
8
1 2 3 4 5 6 7 8 9 10 11 12
Month
Mo
n
t
h
l
y

M
e
a
n

F
l
o
w

in

c
f
s

Figure 13. Monthly Average Flows at McKee Creek,
Calculated from Mallard Creek Flows – Period of Record Dec. 1994 to Sept. 2001.

5.5 Allocation

The objective of a TMDL is to allocate loads among all of the known pollutant sources
throughout a watershed so that appropriate control measures can be implemented and
water quality standards achieved. The Federal Register, in 40 CFR §130.2 (i), states that
TMDLs can be expressed in terms of mass per time (e.g. pounds per day), toxicity, or
other appropriate measure. These TMDLs are expressed in terms of counts per day
(which is equivalent to colony-forming units [cfu] per day) and the required percent
reduction necessary to achieve water quality standards (WQS). The TMDL represents the
maximum one-day load the stream can assimilate over a 30-day period and meet the target
concentration. The TMDL analysis is shown below in Table 13.

Several allocation strategies were tried in developing these TMDLs. The reductions
needed to meet WQS at Station MY7, were first calculated because this station had the
largest concentration exceedances of the fecal coliform water quality criteria. However,
the relatively larger point source represented by the Bradfield Farms subdivision had to be
considered before the LA could be developed. Finally, the “400 standard” was evaluated
and proven to be much more stringent than the “200 standard.” This led to a final
development of the TMDL based on the “400 standard” at MCK-2.

The combined WetWxWLAs + LAs were then extrapolated by area and land use to the
entire McKee Creek watershed and also to the Clear Creek watershed. Finally, these two
wet weather components were separated proportionally to the areas within and outside of
the MS4 jurisdictions. The final TMDL components are shown in Table 13.
TMDL for Fecal Coliform Bacteria: McKee and Clear Creeks June 2003

35

Table 13. Calculation of TMDL Components

TMDL loads based on the 400 standard.
Based on a 85% Reduction for McKee Creek at MCK-2 and by extrapolation
by land area and known point sources for the remaining subwatersheds

Watershed TMDL* CFWLA* LA +WLA wt wx MOS Wet Wx WLA WLA Total LA only
Units Acres cfu/day cfu/day cfu/day cfu/day cfu/day cfu/day cfu/day

MCK-2* 4166 1.82E+10 8.02E+09 8.36E+09 1.82E+09 7.92E+09 1.59E+10 4.37E+08
Clear Creek 599 2.62E+09 0 2.36E+09 2.62E+08 2.36E+08 2.36E+08 2.12E+09
Lower McKee 751 3.28E+09 0 2.95E+09 3.28E+08 2.95E+09

Total McKee 5516 2.41E+10 8.02E+09 1.37E+10 2.41E+09 8.16E+09 1.62E+10 5.51E+09

% reduction at MCK-2 84.8612 0 92.2755
% reduction at mouth of Mckee Creek 90.4609
*MCK-2 INCLUDES MY7 AREA AND LOADS
Current Load at MCK-2 1.082E+11cfu/day
McKee CFWLA 30-day load = 2.406e+11 cfu; McKee Wet Wx WLA 30-day load = 2.448e+11 cfu
Wet Wx WLA = MS4 load

6.0 SUMMARY AND FUTURE CONSIDERATIONS

The sources of fecal coliform in the McKee and Clear Creek watersheds include livestock,
leaking septic tanks, urban runoff, wildlife, two NPDES continuous discharge facilities,
and possibly the sewers leading to them. A mass balance approach coupled with Flow
Duration and Load Duration curves was used to calculate the TMDLs and allocate fecal
coliform loads. In order to meet the water quality target, the final allocations were based
on an 85 percent reduction of fecal coliform load at MCK-2. The MS4 WLAs were
developed by their proportional areas compared to the entire watershed areas within which
they lie. The TMDL allows the two continuous discharge facilities to discharge fecal
coliforms at their current permit levels, comprising 33 percent of the TMDL (versus 57
percent as the combined WetWxWLA + LA). Future plans for sewer interceptors along
Reedy and McKee Creeks may allow the existing discharges from these facilities to be
diverted out of the basin. If this occurs, it will trigger a greater allocation to the wet
weather sources. In addition, wet weather sources of fecal coliform may shift to cats,
dogs, geese and horses as this area undergoes urban development.

TMDL for Fecal Coliform Bacteria: McKee and Clear Creeks June 2003

36

6.1 Monitoring

Fecal coliform monitoring will continue on a monthly interval at the ambient monitoring
site (SR 2808). The continued monitoring of fecal coliform concentrations will allow for
the evaluation of progress towards the goal of achieving water quality standards.

To comply with EPA guidance, North Carolina plans to adopt new bacterial standards in
the near future using Escherichia coli (E. coli) or enterococci. Thus, future monitoring
efforts to measure compliance with this TMDL should include E. coli or enteroccoci. If
future monitoring for E. coli or enteroccoci indicates the standard has not been exceeded,
these monitoring data may be used to support delisting the water body from the 303(d)
list. If a continuing problem is identified using E.coli/enterococci, the TMDL may be
revised.

6.2 Implementation

An implementation plan is not included in this TMDL. The involvement of local
governments and agencies will be needed in order to develop the implementation plan.
Local agencies were very helpful in the development of this TMDL, particularly in the
areas of data collection and land use trends.

The planned interceptor sewer along McKee Creek, if it is combined with repair of any
infiltration or other problems with the existing sewer lines, should provide a measurable
reduction in bacterial levels. The potential for leaky sewers and septic systems to be
major contributors to the observed impairment should be addressed early in the
implementation phase.

7.0 PUBLIC PARTICIPATION

A draft of the McKee and Clear Creek TMDL was publicly noticed through various
means, including notification in two local newspapers, The Charlotte Observer (11/02/02)
and The Independent Tribune (10/31/02). In October, DWQ electronically distributed a
draft of the TMDL and public comment information to known interested parties. The
TMDL was also available from the Division of Water Quality’s website at
http://h2o.enr.state.nc.us/tmdl/draft_TMDLs.htm during the comment period. The public
comment period was held for the 30 days prior to November 29, 2002. A public meeting
was held in Concord on November 18, 2002 to present the TMDL and offer opportunity
for questions and comments by the public. Seven people attended the meeting. No
comments were received.

Following a revision to the TMDL, a second public comment period was held from May
19, 2003 to June 3, 2003. Notification was made in The Charlotte Observer and The
Independent Tribune. No comments were received.
TMDL for Fecal Coliform Bacteria: McKee and Clear Creeks June 2003

37

REFERENCES

ASIWPCA TMDL, “Brown Bag,” Conference Call on Load Duration Curve
Methodology, June 12, 2002.

Code of Federal Regulations. “Water Quality Planning and Management.” Title 40, Part
130, 2000 ed.

Furr, Tim. 2002. McKee and Clear Creek TMDL. E-mail from Tim V. Furr, Laboratory
Supervisor, Water and Sewer Authority of Cabarrus County, sent on 11/22/2002 to
Michelle Woolfolk of the North Carolina Department of Environment and Natural
Resources.

Horsley & Witten, Inc. 1996. Identification and Evaluation of Nutrient and Bacterial
Loadings to Maquiot Bay, New Brunswick and Freeport, Maine. Final Report.

Jedlocki, Steve, 2002, Personal Communication, City of Charlotte – Storm Sewer
Services, 704-336-4398, April 17, 2002.

Kansas Department of Health and Environment, 2002. Data Analysis: Methodology Used
in Kansas Lake TMDLs: Explanation of Bacteria TMDL Curves (PDF): Kansas TMDL
Curve Methodology. http://www.kdhe.state.ks.us/tmdl/Data.htm.

MAPTECH, 2002. Terrain Navigator. 1 Riverside Drive, Andover, MA 01810-1122. .
http://www.maptech.com

Mecklenburg County, Storm Water Management Program Report for Cornelius,
Davidson, Huntersville, Matthews, Mecklenburg County, Mint Hill, Pineville, retrieved
from the Internet at
http://www.charmeck.org/resources/stormwatermanagementprogramreport.pdf,
February 24, 2003.

Mecklenburg County Department of Environmental Protection. 2002. Fecal Coliform
Total Maximum Daily Load for the Irwin, McAlpine, Little Sugar and Sugar Creek
Watersheds, Mecklenburg County, North Carolina.

Metcalf & Eddy. 1991. Wastewater Engineering: Treatment, Disposal, Reuse. 3rd ed.
McGraw-Hill, Inc., New York.

NC Division of Environmental Health. 2003. Septic Systems in the North Carolina.
http://www.deh.enr.state.nc.us/oww/nonpointsource/NPS.htm. Accessed on May 14,
2003.

Rowell, Van. 2003. Water and Sewer Authority of Cabarrus County, 704-786-1783 x19,
Personal Communication, February 25, 2003.

TMDL for Fecal Coliform Bacteria: McKee and Clear Creeks June 2003

38
Rozell, Rusty. 2003. Mecklenburg County Water Quality Program, 704-336-5449,
Personal Communication, February 27, 2003.

Sheely, Laura H. 2002. Load Duration Curves: Development and Application to Data
Analysis for Streams in the Yazoo River Basin, MS, Special Project, Summer 2002,
Jackson Engineering Graduate Program, July 15, 2002.

Testerman, Dennis 2002. E-mail note to [e-mail], dated October 24,
2002 and the 1999 results of an Agricultural Survey conducted by the Cabarrus and
Mecklenburg Soil and Water Conservation Districts.

USDA. 1997. Census of Agriculture, Volume 1, Geographic Area Series, Part 42.
AC97-A-42. Department of Agriculture, National Agricultural Statistics Service.

USEPA. 1986. Ambient Water Quality Criteria for Bacteria – 1986. U.S. Environmental
Protection Agency, Office of Water, Washington DC. EPA 440/5-84-002. January 1986.

USEPA. 1991. Guidance for Water Quality – Based Decisions: The TMDL Process.
EPA-440/4-91-001. U.S. Environmental Protection Agency, Office of Water,
Washington, DC. http://www.epa.gov/owow/tmdl/decisions/dec1c.html

USEPA, 1997. Guidelines for Preparation of the Comprehensive State Water Quality
Assessment (305(b) Reports) and Electronic Updates. Assessment and Watershed
Protection Division, Office of Wetlands, Oceans, and Watersheds. Office of Water.
September 1997.

USEPA. 1997. New Policies for Establishing and Implementing Total Maximum Daily
Loads (TMDLs). August 8, 1997. Memorandum from Robert Perciasepe to Regional
Administrators. U.S. Environmental Protection Agency, Washington, DC.
http://www.epa.gov/owow/tmdl/policy.html.

US Environmental Protection Agency, Federal Advisory Committee (FACA), 1998,
Draft final TMDL Federal Advisory Committee Report. 4/28/98

US Environmental Protection Agency, 2000, Revisions to the Water Quality Planning and
Management Regulation and Revisions to the National Pollutant Discharge Elimination
System Program in Support of Revisions to the Water Quality Planning and management
Regulation; Final Rule. Fed. Reg. 65:43586-43670 (July 13, 2000).

USEPA. 2000. EPA-Region 4. Watershed Characterization System User’s Guide, Version
1.1. U.S. Environmental Protection Agency. Region 4. Atlanta, GA. May 2000.

USEPA. 2001. Protocol for Developing Pathogen TMDLs, First Edition. U.S.
Environmental Protection Agency, Office of Water, Washington DC. EPA 841-R-00-002,
January 2001.

TMDL for Fecal Coliform Bacteria: McKee and Clear Creeks June 2003

39

APPENDIX A -- INTENSIVE SURVEY DATA, SPRING OF 2001

McKee Creek
Yadkin Basin Fecal Geo- Arith-
Mecklenburg/Cabarrus Coliform Remark metric metic Standard
station# Description date Collector /100ml Code Mean Mean Deviation
Q7750000 3
McKee Creek in Mecklenburg Co. at SR
2808 4/11/2001 B. Love 230 143 154 71
Q7750000 3A
McKee Creek in Mecklenburg Co. at SR
2808 4/11/2001 B. Love 91
Q7750000 3B
McKee Creek in Mecklenburg Co. at SR
2808 4/11/2001 B. Love 140

MCK-2 3 McKee Creek in Cabarrus Co. at SR 1169 4/11/2001 B. Love 1900 B1 658 1487 1271
MCK-2 3A McKee Creek in Cabarrus Co. at SR 1169 4/11/2001 B. Love 60
MCK-2 3B McKee Creek in Cabarrus Co. at SR 1169 4/11/2001 B. Love 2500

Q7750000 3
McKee Creek in Mecklenburg Co. at SR
2808 4/18/2001 B. Love 240 158 183 99
Q7750000 3A
McKee Creek in Mecklenburg Co. at SR
2808 4/18/2001 B. Love 68
Q7750000 3B
McKee Creek in Mecklenburg Co. at SR
2808 4/18/2001 B. Love 240

MCK-2 3 McKee Creek in Cabarrus Co. at SR 1169 4/18/2001 B. Love 720 737 737 15
MCK-2 3A McKee Creek in Cabarrus Co. at SR 1169 4/18/2001 B. Love 750
MCK-2 3B McKee Creek in Cabarrus Co. at SR 1169 4/18/2001 B. Love 740

Q7750000 3
McKee Creek in Mecklenburg Co. at SR
2808 4/25/2001 B. Love 5600 6482 6533 1006
Q7750000 3A
McKee Creek in Mecklenburg Co. at SR
2808 4/25/2001 B. Love 7600 B3
Q7750000 3B
McKee Creek in Mecklenburg Co. at SR
2808 4/25/2001 B. Love 6400 B3

MCK-2 3 McKee Creek in Cabarrus Co. at SR 1169 4/25/2001 B. Love 600 B1 2094 2900 2252
MCK-2 3A McKee Creek in Cabarrus Co. at SR 1169 4/25/2001 B. Love 5100
MCK-2 3B McKee Creek in Cabarrus Co. at SR 1169 4/25/2001 B. Love 3000

Q7750000 3
McKee Creek in Mecklenburg Co. at SR
2808 5/2/2001 B. Love 200 126 136 62
Q7750000 3A
McKee Creek in Mecklenburg Co. at SR
2808 5/2/2001 B. Love 130 B1
Q7750000 3B
McKee Creek in Mecklenburg Co. at SR
2808 5/2/2001 B. Love 77 B4

MCK-2 3 McKee Creek in Cabarrus Co. at SR 1169 5/2/2001 B. Love 98 B4 88 89 11
MCK-2 3A McKee Creek in Cabarrus Co. at SR 1169 5/2/2001 B. Love 91 B4
MCK-2 3B McKee Creek in Cabarrus Co. at SR 1169 5/2/2001 B. Love 77 B4

TMDL for Fecal Coliform Bacteria: McKee and Clear Creeks June 2003

40
Q7750000 3
McKee Creek in Mecklenburg Co. at SR
2808 5/9/2001 B. Love 130 B1 152 153 21
Q7750000 3A
McKee Creek in Mecklenburg Co. at SR
2808 5/9/2001 B. Love 170 B1
Q7750000 3B
McKee Creek in Mecklenburg Co. at SR
2808 5/9/2001 B. Love 160 B1

MCK-2 3 McKee Creek in Cabarrus Co. at SR 1169 5/9/2001 B. Love 1 B2 1 1 0
MCK-2 3A McKee Creek in Cabarrus Co. at SR 1169 5/9/2001 B. Love 1 B2
MCK-2 3B McKee Creek in Cabarrus Co. at SR 1169 5/9/2001 B. Love 1 B2

Q7750000 3
McKee Creek in Mecklenburg Co. at SR
2808 5/16/2001 B. Love 380 220 240 125
Q7750000 3A
McKee Creek in Mecklenburg Co. at SR
2808 5/16/2001 B. Love 140 B1
Q7750000 3B
McKee Creek in Mecklenburg Co. at SR
2808 5/16/2001 B. Love 200

MCK-2 3 McKee Creek in Cabarrus Co. at SR 1169 5/16/2001 B. Love 4500 2714 3133 1721
MCK-2 3A McKee Creek in Cabarrus Co. at SR 1169 5/16/2001 B. Love 1200
MCK-2 3B McKee Creek in Cabarrus Co. at SR 1169 5/16/2001 B. Love 3700

Q7750000 3
McKee Creek in Mecklenburg Co. at SR
2808 5/30/2001 B. Love 1100 B1 1365 1433 577
Q7750000 3A
McKee Creek in Mecklenburg Co. at SR
2808 5/30/2001 B. Love 2100
Q7750000 3B
McKee Creek in Mecklenburg Co. at SR
2808 5/30/2001 B. Love 1100 B1

MCK-2 3 McKee Creek in Cabarrus Co. at SR 1169 5/30/2001 B. Love 1500 B1 2378 2500 889
MCK-2 3A McKee Creek in Cabarrus Co. at SR 1169 5/30/2001 B. Love 2800
MCK-2 3B McKee Creek in Cabarrus Co. at SR 1169 5/30/2001 B. Love 3200

Q7750000 3
McKee Creek in Mecklenburg Co. at SR
2808 6/5/2001 B. Love 2800 Q 797 1217 1371
Q7750000 3A
McKee Creek in Mecklenburg Co. at SR
2808 6/5/2001 B. Love 420 Q
Q7750000 3B
McKee Creek in Mecklenburg Co. at SR
2808 6/5/2001 B. Love 430 Q

MCK-2 3 McKee Creek in Cabarrus Co. at SR 1169 6/5/2001 B. Love 800 B1, Q 1146 1230 588
MCK-2 3A McKee Creek in Cabarrus Co. at SR 1169 6/5/2001 B. Love 990 B4, Q
MCK-2 1B McKee Creek in Cabarrus Co. at SR 1169 6/5/2001 B. Love 1900 B1, Q

Summary McKee Creek Fecal Coliform

TMDL for Fecal Coliform Bacteria: McKee and Clear Creeks June 2003

41
Number Obser- Geometric
Station Description Dates of days vations Mean
McKee Creek in Mecklenburg Co. at SR 2808
4/11/2001 to
5/9/2001 29 15 309
McKee Creek in Mecklenburg Co. at SR 2808
4/18/2001 to
5/16/2001 29 15 337
McKee Creek in Mecklenburg Co. at SR 2808
4/25/2001 to
5/30/2001 36 15 518
McKee Creek in Mecklenburg Co. at SR 2808 5/2/2001 to 6/5/2001 35 15 341

McKee Creek in Cabarrus Co. at SR 1169
4/11/2001 to
5/9/2001 29 29 155
McKee Creek in Cabarrus Co. at SR 1169
4/18/2001 to
5/16/2001 29 29 206
McKee Creek in Cabarrus Co. at SR 1169
4/25/2001 to
5/30/2001 36 36 260
McKee Creek in Cabarrus Co. at SR 1169 5/2/2001 to 6/5/2001 35 35 231

All Stations
4/11/2001 to
5/9/2001 29 30 219
All Stations
4/18/2001 to
5/16/2001 29 30 263
All Stations
4/25/2001 to
5/30/2001 36 30 367
All Stations 5/2/2001 to 6/5/2001 35 30 280

Remark Code Definitions
B1) Countable membranes with less than 20 colonies.
Reported value is estimated or is a total of the counts on all filters reported per 100 ml.
B2) Counts from all filters were zero.
The value reported is based on the number of colonies per 100 ml that would have been reported if there had
been one colony on the filter representing the largest filtration volume (reported as a less than “<“ value).
B3) Countable membranes with more than 60 or 80 colonies.
The value reported is calculated using the count from the smallest volume filtered and
reported as a greater than “>” value.
Filters have counts of both >60 or 80 and < 20.
B4) Reported value is a total of the counts from all countable filters reported per 100 ml.
Q ) Holding time exceeded.

This code shall be used if the value is derived from a sample that was received, prepared and/or analyzed
after the approved holding time restrictions for sample preparation and analysis.

TMDL for Fecal Coliform Bacteria: McKee and Clear Creeks June 2003

42
APPENDIX B -- POINT SOURCE ASSESSMENT

Summary of Discharge Data from BRADFIELD FARMS WATER COMPANY/CENTREX
HOMES, Cabarrus County, NC – (NPDES Permit #NC0064734)
Discharging to McKee Creek downstream of the Mecklenburg/Cabarrus County line.
(from a review of daily monitoring data for 1998-2001)
Permit limits: Flow – 0.460 mgd, Fecal Coliforms – 200 cfu/100 ml (monthly geometric mean) =
3.48E9 cfu/day
Daily Max. is 400 cfu/100 ml = 6.96E9 cfu/day

2001 data – all fecal coliform measurements were <2 cfu (listed in the monthly summary as 1 cfu)
except for a measurement of 5 cfu on 10/23/01

Flows approximated 1/3 of permit limit

Fecal Coliform load for the year was approx. 1/600th or 0.2% of the permitted
limit.

2000 data – most measurements were <2 cfu, except for 450 cfu on 2/3/00; 3 measurements from
18-28 cfu in 3/2000, 1400 cfu on 5/10/00, 3000 cfu on 6/22/00, 12.7 on 6/29/00, 6000 on 7/6/00;
On 7/12/00 operators were changed and the plant did somewhat better for the rest of the year with
only two values above <2 cfu for the remainder of the year: 60 cfu on 7/28/00 and >8000 cfu on
10/10/00 -- (yet even with this high measurement the geometric mean for the month was only
6.03 cfu)
Average monthly geometric mean for Year 2000 was approximately 18.5 cfu/100 ml

Flows approximated <1/3 of permit limit

Fecal Coliform load for the year was approx. 3.0% of the permitted limit.

1999 data – the only fecal coliform values >50 cfu were: 1050 cfu on 2/24/99, 2325 cfu on
6/24/99, and 143 cfu on 8/11/99.
Average monthly geometric mean for 1999 was approximately 9.5 cfu/100 ml

Flows remained at ~ 1/3 of the permitted limit

Fecal Coliform load for the year was approx. 1.6% of the permitted limit.

1998 data – the only fecal coliform values >50 cfu were: 450 cfu on 2/26/98, 1100 cfu on 5/28/98,
3100 on 6/3/98,
>3000 on 7/15/98, 161 on 8/13/98, 60 on 9/10/98, 73 on 10/8/98, and 2350 on 10/23-98
Average monthly geometric mean for 1999 was approximately 11.9 cfu/100 ml

Flows remained at ~ 1/3 of the permitted limit

Fecal Coliform load for the year was approx. 2.0% of the permitted limit.

TMDL for Fecal Coliform Bacteria: McKee and Clear Creeks June 2003

43
Summary of Discharge Data from LAMPLIGHTER VILLAGE EAST, Mecklenburg County,
NC – (NPDES Permit #NC0025259)
Discharging to the headwaters of McKee Creek, or to a tributary to the headwaters of McKee
Creek, in Mecklenburg County.
(from a review of daily monitoring data for 1997-2001)
Permit limits: Flow – 0.070 mgd, Fecal Coliforms – 200 cfu/100 ml (monthly geometric mean) =
5.30E8 cfu/day
Daily Max. is 400 cfu/100 ml = 1.06E9 cfu/day

2001 data – all fecal coliform measurements were <100 cfu/100 ml except for measurements of
340 & 580 on 7/10/01,
340 on 12/12/01, and 300 on 12/18/01.
Average monthly geometric mean for 2001 was approximately 16.3 cfu/100 ml






 













Fecal Coliform load for the year was approx. 3.3% of the permitted limit.

2000 data – all fecal coliform measurements were <100 cfu/100 ml except for 260 on 2/1/00.
Most measurements were <2.
Average monthly geometric mean for 2000 was approximately 4.0 cfu/100 ml






 












Fecal Coliform load for the year was approx. 0.9% of the permitted limit.

1999 data – all fecal coliform measurements were <100 cfu/100 ml except for measurements of
260 on 2/23/99,
900 on 3/2/99, >24,000 on 8/24/99, 1500 on 9/21/99, and 1800 on 10/5/99.
Average monthly geometric mean for 1999 was approximately 5.3 cfu/100 ml






 












Fecal Coliform load for the year was approx. 0.7% of the permitted limit.

1998 data – all fecal coliform measurements were <100 cfu/100 ml except for 2500 on 10/6/98,
960 on 11/10/98, and 4100 on 12/1/98.
Most measurements were <2.
Average monthly geometric mean for 1998 was approximately 3.0 cfu/100 ml






 












Fecal Coliform load for the year was approx. 0.6% of the permitted limit.

1997 data – all fecal coliform measurements were <100 cfu/100 ml except for 360 on 5/14/97.
Most measurements were <2.
Average monthly geometric mean for 1997 was approximately 2.4 cfu/100 ml






 












Fecal Coliform load for the year was approx. 0.4% of the permitted limit.

TMDL for Fecal Coliform Bacteria: McKee and Clear Creeks June 2003

44
APPENDIX C -- SEASONALITY AND CRITICAL PERIOD

Based on Stream Measurements Based on Stream Measurements Upstream and Downstream of
Two Point Source Dischargers

The following data were reviewed with the conclusion that high, instream fecal coliform levels
were common throughout the year, with no particular season representing a worst case period.

BOLD IS THE SEASONAL PERIOD OF APRIL THROUGH JUNE
Corresponding to the State Intensive Survey 4/10/01-6/5/01
DATA EXCEEDING 400 CFU/100 ml UPSTREAM OR DOWNSTREAM
NC0025259 Lamplighter Village East 100’ above and 300 ’ below outfall
to (Unnamed Tributary to?) McKee Creek
"Unnamed Tributary" is listed for 2000 and 2001 data
cfu/100ml mgd
Fecal Coliform
Concentration Concentration
Day Mo.Year Effluent Flow Upstream Downstream
1 4 1998 2 0.019 1300 820
7 4 1998 56 0.029 460 93
30 6 1998 33 0.033 1300 820
28 7 1998 2 0.014 30000 4700
11 8 1998 18 0.022 7200 6600
25 8 1998 2 0.011 4600 10
22 9 1998 2 0.008 860 10
6 10 1998 2500 0.013 5300 4000
20 10 1998 14 0.013 450 50
3 11 1998 2 0.018 10 1200
10 11 1998 960 0.012 10 3400
1 12 1998 4100 0.015 10 3700
30 12 1998 2 0.012 590 5800
20 1 1999 2 0.011 1000 2700
27 1 1999 2 0.014 4700 390
2 2 1999 3 0.015 1000 5100
9 2 1999 84 0.019 440 24000
30 3 1999 2 0.015 10 410
28 4 1999 2 0.015 3400 850
4 5 1999 2 0.017 1200 1000
20 5 1999 2 0.021 480 2400
10 6 1999 2 0.011 4300 5600
24 8 1999 24000 0.012 38 6900
31 8 1999 2 0.012 460 10
8 9 1999 2 0.013 560 100
14 9 1999 2 0.011 10 2100
21 9 1999 1500 0.009 3100 12
28 9 1999 2 0.033 12 2700
5 10 1999 1800 0.014 200 2000
13 10 1999 2 0.035 2000 1200
2 11 1999 2 0.01 440 69
30 11 1999 2 0.012 780 1500
14 12 1999 2 0.038 4900 240
TMDL for Fecal Coliform Bacteria: McKee and Clear Creeks June 2003

45
11 1 2000 2 0.018 2200 94
15 2 2000 7 0.068 1200 110

BOLD IS THE SEASONAL PERIOD OF APRIL THROUGH JUNE

DATA EXCEEDING 400 CFU/100 ml UPSTREAM OR DOWNSTEAM
NC0064734 -- Bradfield Farms 100’ Above Outfall and Below Outfall at NCSR 1169 (MCK-2)
Day Mo.Year Effluent Flow Eff. Cfu/day Upstream Downstream
cfu/100ml mgd cfu/day cfu/100ml cfu/100ml

21 1 1999 2 0.172 13020400 213 420
18 2 1999 2 0.11 8327000 1200 380
25 3 1999 2 0.154 11657800 490 1600
15 4 1999 8.86 0.138 46278438 1200 60
29 4 1999 2 0.184 13928800 300 1200
19 5 1999 24.1 0.164 149598340 200 600
25 5 1999 2 0.156 11809200 420 290
2 6 1999 2 0.168 12717600 92 1200
16 6 1999 15.6 0.204 120453840 6000 2300
24 6 1999 2325 0.116 10208145000 1200 410
30 6 1999 36.4 0.182 250748680 420 200
7 7 1999 2 0.086 6510200 1200 1200
15 7 1999 2 0.076 5753200 290 512
29 7 1999 2 0.118 8932600 42.5 1200
5 8 1999 2 0.103 7797100 30 1200
11 8 1999 143 0.119 644093450 27.5 820
26 8 1999 2 0.13 9841000 3500 6000
2 9 1999 2 0.09 6813000 88 600
9 9 1999 2 0.116 8781200 100 547
15 9 1999 2 0.108 8175600 580 470
29 9 1999 2 0.072 5450400 6000 6000
2 11 1999 5.19 0.08 15715320 6000 6000
2 12 1999 2 0.143 10825100 520 84
15 12 1999 5.06 0.168 32175528 530 860
6 1 2000 2 0.132 9992400 52.5 450
3 2 2000 450 0.102 1737315000 620 270
23 3 2000 2 0.166 12566200 520 164
29 3 2000 27.3 0.134 138462870 470 400
13 4 2000 2 0.114 8629800 520 1200
19 4 2000 2 0.102 7721400 480 920
10 5 2000 1400 0.132 6994680000 360 1340
17 5 2000 2 0.152 11506400 1200 330
25 5 2000 2 0.128 9689600 860 172
5 6 2000 2 0.149 11279300 500 73
15 6 2000 2 0.322 24375400 700 1180
22 6 2000 3000 0.3 34065000000 3300 1700
TMDL for Fecal Coliform Bacteria: McKee and Clear Creeks June 2003

46
29 6 2000 12.7 0.178 85563710 6000 5600
6 7 2000 6000 0.21 47691000000 3600 1600

DATA EXCEEDING 400 CFU/100 ml UPSTREAM OR DOWNSTEAM
NC0064734 -- Bradfield Farms 100’ Above Outfall and Below Outfall at NCSR 1169 (MCK-2)
Day Mo. Year Effluent Flow Upstream Downstream
cfu/100ml mgd cfu/100ml cfu/100ml
21 1 1999 2 0.172 213 420
18 2 1999 2 0.11 1200 380
25 3 1999 2 0.154 490 1600
15 4 1999 8.86 0.138 1200 60 BOLD IS THE DATA
29 4 1999 2 0.184 300 1200 WHERE UPSTREAM VALUES
19 5 1999 24.1 0.164 200 600 EXCEED OR EQUAL
25 5 1999 2 0.156 420 290 DOWNSTREAM VALUES
2 6 1999 2 0.168 92 1200 (NONPOINT SOURCES
16 6 1999 15.6 0.204 6000 2300 ARE PREDOMINANT)
24 6 1999 2325 0.116 1200 410
30 6 1999 36.4 0.182 420 200
7 7 1999 2 0.086 1200 1200
15 7 1999 2 0.076 290 512
29 7 1999 2 0.118 42.5 1200
5 8 1999 2 0.103 30 1200
11 8 1999 143 0.119 27.5 820
26 8 1999 2 0.13 3500 6000
2 9 1999 2 0.09 88 600
9 9 1999 2 0.116 100 547
15 9 1999 2 0.108 580 470
29 9 1999 2 0.072 6000 6000
2 11 1999 5.19 0.08 6000 6000
2 12 1999 2 0.143 520 84
15 12 1999 5.06 0.168 530 860
6 1 2000 2 0.132 52.5 450
3 2 2000 450 0.102 620 270
23 3 2000 2 0.166 520 164
29 3 2000 27.3 0.134 470 400
13 4 2000 2 0.114 520 1200
19 4 2000 2 0.102 480 920
10 5 2000 1400 0.132 360 1340
17 5 2000 2 0.152 1200 330
25 5 2000 2 0.128 860 172
5 6 2000 2 0.149 500 73
15 6 2000 2 0.322 700 1180
22 6 2000 3000 0.3 3300 1700
29 6 2000 12.7 0.178 6000 5600
6 7 2000 6000 0.21 3600 1600

TMDL for Fecal Coliform Bacteria: McKee and Clear Creeks June 2003

47

APPENDIX D -- FAILING SEPTIC SYSTEMS

This sheet contains information related to the contribution of failing septic systems to streams.

The following assumptions are made for septic contributions.
Assume a failure rate for septics in the watershed: 1 %
Assume the average FC concentration reaching the stream (from septic overcharge) is: 1.00E+04 #/100 ml (Horsely & Whitten,
1996)
Assume a typical septic overcharge flow rate of: 70 gal/day/per
son
(Horsely & Whitten,
1996)
Total number of people on septics comes from the septic report in WCS.
SEPTICS AS A POINT SOURCE
Total Septic Septic Septic Stream
Density # failing # people flow flow FC rate flow Load
Subwatershed people/septic septics served (gal/day)(mL/hr) (#/hr) (cfs) cfu/day
MY7 2.5 3 6 438 68,997 6.90E+06 6.78E-04 1.66E+08
MY7 2.5 1 3 228 35,879 3.59E+06 3.53E-04 8.63E+07
MCK-2 2.5 1 1 88 13,799 1.38E+06 1.36E-04 3.32E+07
Clear Ck 2.5 1 2 123 19,319 1.93E+06 1.90E-04 4.65E+07
Total McKee
Watershed 3.32E+08

TMDL for Fecal Coliform Bacteria: McKee and Clear Creeks June 2003

48

APPENDIX E -- FLOWS AND CALCULATED FECAL COLIFORM LOADS AT 200
CFU/100 ML; SAMPLE CONCENTRATIONS AND STREAM LOADS

Irwins Creek McKee Ck @ MY7
Watershed area = 8.37 square miles = Subwatershed area =
5356.8Acres 2735Acres Sample Calculated
FLOW LOAD in Concen- Actual
Flow in cfs In cfu/day at tration in Load in
DATE MAX MIN MEAN Cfs 200/100ml cfu/100 ml cfu/day

17*7*8+0.82 4.00E+09  
17*7*8,0.87 4.25E+09  
17*57811.28 6.25E+09  
17*17*8***8*0.56 2.75E+09  
17*+7*8***8*0.56 2.75E+09  
17*,7*8**8*0.56 2.75E+09  
17*27*8**8*0.56 2.75E+09  
17*/7*8*8/5*8*0.56 2.75E+09  
177*825*0.51 2.50E+09  
17*7582825*80.61 3.00E+09  
177+82*81.17 5.75E+09  
177*8/58/+0.49 2.40E+09  
1757*88/5*8*0.56 2.75E+09  
1717*88/5*0.51 2.50E+09  
17+7*88,1*0.51 2.50E+09  
17,78/58+,8,/0.40 1.97E+09  
17278/58+,8,+0.39 1.90E+09  
17/7*8*8+,82+0.44 2.15E+09  
1778/58+8+20.35 1.70E+09  
17*78+,8+8+0.32 1.57E+09  
+7*78,18+8+0.32 1.57E+09  
+778+8158120.30 1.45E+09  
+778+852810.27 1.32E+09  
+757**8528,1.89 9.24E+09  
+7178/55*20.93 1.02E+11  
+7+728*8,8+1.84 8.99E+09  
+7,7*8,*8*850.71 3.50E+09  
+727*8**8*0.56 2.75E+09  
+7/7*8258/50.48 2.35E+09  
+7*78/58,18250.43 2.10E+09  
+7**78258+,8,50.38 1.85E+09  
+7*78,18+8+10.33 1.62E+09  
TMDL for Fecal Coliform Bacteria: McKee and Clear Creeks June 2003

49
+7*78,18158+50.33 1.60E+09  
+7*57815852810.27 1.30E+09  
+7*178+,852810.27 1.30E+09  
+7*+78+852810.27 1.32E+09  
+7*,7815858520.25 1.20E+09  
+7*278528,8550.22 1.10E+09  
+7*/78+85810.27 1.30E+09  
+7781585285/0.25 1.22E+09  
+7*78528585,0.24 1.17E+09  
+7785288/0.20 9.74E+08  
+7785288,0.19 9.24E+08  
+75788,80.15 7.50E+08  
+71788810.13 6.25E+08  
+7+78,8*/850.12 6.00E+08  
+7,78,8*/8,0.14 6.75E+08  
+7278+8,850.17 8.50E+08  
+7/78/815*810.77 3.75E+09  
+77*858,8+50.33 1.60E+09  
,7*7*288/0.47 2.32E+09  
,77*5858*1.07 5.25E+09  
,7785880.16 8.00E+08  
,75788*/8*0.11 5.25E+08  
,71788*/8*0.11 5.25E+08  
,7+78,8*/80.10 5.00E+08  
,7,78528*/8+0.13 6.50E+08  
,7278,8*/80.12 5.75E+08  
,7/7852811.79 8.74E+09  
,7*78528*/820.14 7.00E+08  
,7**7*5*8*1/854.80 2.35E+10  
,7*7*21*8,*/9.70 4.75E+10  
,7*718**1.02 5.00E+09  
,7*57*8+8,10.38 1.87E+09  
,7*1728+58/2.50 1.22E+10  
,7*+78,185810.27 1.32E+09  
,7*,7858,850.21 1.05E+09  
,7*278+8850.22 1.07E+09  
,7*/718881*0.26 1.27E+09  
,775281558/2.50 1.22E+10  
,7*78+8850.20 9.99E+08  
,77858,810.18 8.74E+08  
,77*8*8,8*0.16 7.75E+08  
,75758*852*810.77 3.75E+09  
TMDL for Fecal Coliform Bacteria: McKee and Clear Creeks June 2003

50
,7178258581+0.29 1.40E+09  
,7+78588/0.20 9.74E+08  
,7,78528,80.17 8.25E+08  
,7278,8*/810.13 6.25E+08  
,7/78*/8*18*20.09 4.50E+08  
,778*/8*18*20.09 4.50E+08  
,7*78*/8*8*10.08 3.75E+08  
27*7+8*/825.00 2.45E+10  
27718,*881.12 5.50E+09  
277/8*8+,*80.61 3.00E+09  
2757*8+83.17 1.55E+10  
2717*88158250.43 2.10E+09  
27+78158585,0.24 1.17E+09  
27,7858,8+0.18 8.99E+08  
27278,8,8/0.15 7.25E+08  
27/78,8*/80.12 5.75E+08  
27*758*/5852.25 1.10E+10  
27**78/58810.27 1.32E+09  
27*78,880.15 7.50E+08  
27*788*18*20.09 4.50E+08  
27*57*8,8*850.12 6.00E+08  
27*17*88*850.17 8.50E+08  
27*+78*8*8**0.06 2.75E+08  
27*,78*8*8*0.05 2.50E+08  
27*278*/8/8*0.06 3.00E+08  
27*/788*8*10.08 3.75E+08  
27788*8*,0.09 4.25E+08  
27*78*18*8*0.07 3.25E+08  
2778*18*8*0.06 3.00E+08  
2778*8*8**0.06 2.75E+08  
2757*88,8*20.09 4.50E+08  
2717*8+8,8+20.35 1.70E+09  
27+788/8*10.08 3.75E+08  
27,78*8+820.04 2.00E+08  
27278/8+820.04 2.00E+08  
27/78*8+820.04 2.00E+08  
2778,8+8/0.05 2.25E+08  
27*78,18,810.27 1.32E+09  
/7*718*/112.76 6.25E+10  
/77,1*57.15 3.50E+10  
/77*8*8,0.87 4.25E+09  
/75751*+83.22 1.57E+10  
TMDL for Fecal Coliform Bacteria: McKee and Clear Creeks June 2003

51
/71788,1*80.61 3.00E+09  
/7+78,185281,0.29 1.42E+09  
/7,78+,8,850.22 1.07E+09  
/7278+,8,8510.23 1.12E+09  
/7/785285850.22 1.07E+09  
/7*7*88585+0.23 1.15E+09  
/7**7*88,8+*0.31 1.52E+09  
/7*7858820.19 9.49E+08  
/7*78528,85*0.21 1.02E+09  
/7*578528,850.21 1.05E+09  
/7*178158585/0.25 1.22E+09  
/7*+781588/0.20 9.74E+08  
/7*,78,8,850.17 8.50E+08  
/7*271+8,58/2.50 1.22E+10  
/7*/78+58*2.09 1.02E+10  
/778+8810.18 8.74E+08  
/7*78,188/0.20 9.74E+08  
/77,*8,**5.62 2.75E+10  
/775,*18//*46.46 2.27E+11  
/75718/*851.53 7.50E+09  
/717*/*8*/9.70 4.75E+10  
/7+7*,8*18,2.91 1.42E+10  
/7,78*8**8+0.82 4.00E+09  
/727*88,1*8*0.56 2.75E+09  
/7/7*88+,820.42 2.05E+09  
/778/58+8,0.37 1.80E+09  
*7*7*85818+,0.34 1.67E+09  
*778+,8581+0.29 1.40E+09  
*778+8,8520.25 1.20E+09  
*7578+8,8520.25 1.20E+09  
*7178+8,85*0.21 1.02E+09  
*7+78+885+0.23 1.15E+09  
*7,78+8,8550.22 1.10E+09  
*7278528,8,0.19 9.24E+08  
*7/78+88510.23 1.12E+09  
*7*78+,885/0.25 1.22E+09  
*7**78+,8581,0.29 1.42E+09  
*7*78+,858110.28 1.37E+09  
*7*78+,8,81*0.26 1.27E+09  
*7*578+8,8510.23 1.12E+09  
*7*1781588/0.20 9.74E+08  
*7*+78/58,810.26 1.25E+09  
TMDL for Fecal Coliform Bacteria: McKee and Clear Creeks June 2003

52
*7*,78+,8,8550.22 1.10E+09  
*7*278,1885/0.25 1.22E+09  
*7*/78+,858110.28 1.37E+09  
*778258528120.30 1.45E+09  
*7*78+8,8510.23 1.12E+09  
*778,18581/0.30 1.47E+09  
*778,18+8+,0.34 1.67E+09  
*7578,18+8+50.33 1.60E+09  
*7178+,8+8++0.34 1.65E+09  
*7+78+8158120.30 1.45E+09  
*7,78+8158+0.31 1.50E+09  
*7278+8528150.28 1.35E+09  
*7/781585281*0.26 1.27E+09  
*77852858510.23 1.12E+09  
*7*7*88,8510.23 1.12E+09  
**7*78528528520.25 1.20E+09  
**7781585285/0.25 1.22E+09  
**778158585/0.25 1.22E+09  
**7578+852810.27 1.30E+09  
**7178+,8+8+0.32 1.57E+09  
**7+78+,81581/0.30 1.47E+09  
**7,78+8158110.28 1.37E+09  
**7278+,8+8+*0.31 1.52E+09  
**7/78,8+8220.45 2.20E+09  
**7*75858,1*820.92 4.50E+09  
**7**78,185281,0.29 1.42E+09  
**7*781585285/0.25 1.22E+09  
**7*781585281*0.26 1.27E+09  
**7*5718/8158*1.07 5.25E+09  
**7*17*88528,0.37 1.80E+09  
**7*+7*8+8528+10.33 1.62E+09  
**7*,78,815*810.77 3.75E+09  
**7*27*8+8,0.37 1.80E+09  
**7*/7+828158,1.38 6.75E+09  
**778,8/58*1.07 5.25E+09  
**7*7*8+,8210.43 2.12E+09  
**778+,8+8+50.33 1.60E+09  
**778258+8+20.35 1.70E+09  
**7578+8+8+0.31 1.50E+09  
**71728+*57.15 3.50E+10  
**7+7+8**8,8/1.48 7.25E+09  
**7,7*8,*8*850.71 3.50E+09  
TMDL for Fecal Coliform Bacteria: McKee and Clear Creeks June 2003

53
**727*8**8*0.56 2.75E+09  
**7/7*8/5*0.51 2.50E+09  
**77*8258/0.47 2.30E+09  
*7*78/58+,8,/0.40 1.97E+09  
*778/58,18/*0.46 2.27E+09  
*778/58,18210.43 2.12E+09  
*7578,18+,8,10.38 1.87E+09  
*7178,18+,8,50.38 1.85E+09  
*7+78,18,18,10.38 1.87E+09  
*7,78258+,8,10.38 1.87E+09  
*7278258+,8,+0.39 1.90E+09  
*7/7858+82+0.44 2.15E+09  
*7*7*88+8,0.37 1.82E+09  
*7**78+,8+8++0.34 1.65E+09  
*7*78+,8158+50.33 1.60E+09  
*7*78+81581,0.29 1.42E+09  
*7*57*8+8,10.38 1.87E+09  
*7*178/58+8,/0.40 1.97E+09  
*7*+78+,*8,0.87 4.25E+09  
*7*,7582*8/1.53 7.50E+09  
*7*27*8/*8**850.71 3.50E+09  
*7*/7*8+*8**80.61 3.00E+09  
*77*82**850.71 3.50E+09  
*7*7*88/5*0.51 2.50E+09  
*77*8**8*0.56 2.75E+09  
*77*8258/50.48 2.35E+09  
*7578/58258220.45 2.20E+09  
*7178/58,1820.42 2.07E+09  
*7+78258+,8,,0.39 1.92E+09  
*7,7*88,18/0.47 2.32E+09  
*727*858/5*8*0.56 2.75E+09  
*7/7*8*8/58/20.50 2.45E+09  
*778/58258/*0.46 2.27E+09  
*7*78258,1820.42 2.07E+09  
*7*7*8258,1820.42 2.07E+09  
*77**8,18250.43 2.10E+09  
*77*8/58+,8250.43 2.10E+09  
*757**82582/0.45 2.22E+09  
*717**8/58/50.48 2.35E+09  
*7+7**8258/0.47 2.32E+09  
*7,7**8*8258/+0.49 2.40E+09  
*727*8,8/5*8,0.87 4.25E+09  
TMDL for Fecal Coliform Bacteria: McKee and Clear Creeks June 2003

54
*7/7**82*8**80.66 3.25E+09  
*7*7**8***8*0.56 2.75E+09  
*7**7**8**8*0.56 2.75E+09  
*7*7**+*1812.81 1.37E+10  
*7*7*,8,8*58,2.40 1.17E+10  
*7*57*8**8,*820.92 4.50E+09  
*7*17**8,*8*850.71 3.50E+09  
*7*+7**8*8**80.61 3.00E+09  
*7*,7**8***8*0.56 2.75E+09  
*7*27**85**80.61 3.00E+09  
*7*/7*,*824.08 2.00E+10  
*77**181*6.13 3.00E+10  
*7*7*18185851.74 8.50E+09  
*77*85*821.02 5.00E+09  
*77**82*8+*8+0.82 4.00E+09  
*757**8+*85*810.77 3.75E+09  
*717**8+*8*80.66 3.25E+09  
*7+7**8*8*80.66 3.25E+09  
*7,7**8*8*80.61 3.00E+09  
*727**8*8**80.61 3.00E+09  
*7/7**8*8**8*0.56 2.75E+09  
*77*81*8**8,0.87 4.25E+09  
*7*7**8+*8*80.66 3.25E+09  
7*7**8**8*0.56 2.75E+09  
77**8**8*0.56 2.75E+09  
77**8/5*0.51 2.50E+09  
757****0.51 2.50E+09  
717**8***0.51 2.50E+09  
7+7**8/5*0.51 2.50E+09  
7,7**88/5*0.51 2.50E+09  
727**8*8/58/20.50 2.45E+09  
7/7**8*8/5*0.51 2.50E+09  
7*7**8+**80.66 3.25E+09  
7**7**8*8/58/20.50 2.45E+09  
7*7*88/5*8/0.97 4.75E+09  
7*7*58**85*8/0.97 4.75E+09  
7*57*288/1.99 9.74E+09  
7*17*8*8+*8,0.87 4.25E+09  
7*+7**82*8*810.77 3.75E+09  
7*,7**5*82,13.79 6.75E+10  
7*27*181828,1.89 9.24E+09  
7*/7*828*851.23 6.00E+09  
TMDL for Fecal Coliform Bacteria: McKee and Clear Creeks June 2003

55
77*8*8/1.02 5.00E+09  
7*7**8/*8,*820.92 4.50E+09  
77*1*8,284.19 2.05E+10  
77*1818,8,1.89 9.24E+09  
757*828851.23 6.00E+09  
717*58/8*81.63 8.00E+09  
7+7*8,88,1.38 6.75E+09  
7,7*8*8/1.02 5.00E+09  
727**8/*82*820.92 4.50E+09  
7*7**8/*8,*8,0.87 4.25E+09  
77**8,*8+*8+0.82 4.00E+09  
77*+8**8+851.23 6.00E+09  
757**++8*15.32 7.50E+10  
717*,8158+3.06 1.50E+10  
7+7*5882851.74 8.50E+09  
7,7*828811.28 6.25E+09  
727*858*81.12 5.50E+09  
7/7*8**821.02 5.00E+09  
7*7**82*8,*820.92 4.50E+09  
7**7**82*8+*8,0.87 4.25E+09  
7*7*18**8+1.02 5.00E+09  
7*7*18/8*851.74 8.50E+09  
7*57*8**8,*8/0.97 4.75E+09  
7*17*1*8,*29.19 4.50E+10  
7*+7*/8*58*1812.81 1.37E+10  
7*,7*58*851.74 8.50E+09  
7*27*858+1.33 6.50E+09  
7*/7*858*81.12 5.50E+09  
77**1*8/15.32 7.50E+10  
7*7***+/35.23 1.72E+11  
77**18,28*4.14 2.02E+10  
77*18,8/5812.30 1.12E+10  
757*8/8851.74 8.50E+09  
717*88,821.43 7.00E+09  
7+7*8,8811.28 6.25E+09  
7,7*88*81.12 5.50E+09  
727*8**8/1.02 5.00E+09  
7/7*5*,*8//547.99 2.35E+11  
77*/+/8,,13.79 6.75E+10  
7*7*/8,181,3.57 1.75E+10  
57*7*,8,58218,2.91 1.42E+10  
577*18*8158*2.09 1.02E+10  
TMDL for Fecal Coliform Bacteria: McKee and Clear Creeks June 2003

56
577*58+858,1.89 9.24E+09  
5757*8,81.68 8.25E+09  
5717*88/8/1.48 7.25E+09  
57+7*8/8+8,1.38 6.75E+09  
57,7*8,858+1.33 6.50E+09  
5727*8+8851.23 6.00E+09  
57/7*8881.17 5.75E+09  
57*7*88*81.12 5.50E+09  
57**7*88*8*1.07 5.25E+09  
57*7*88*1.07 5.25E+09  
57*7*,81.63 8.00E+09  
57*57*8+8*1.07 5.25E+09  
57*17*81.02 5.00E+09  
57*+7*8**82*8/0.97 4.75E+09  
57*,7**8/*82*820.92 4.50E+09  
57*27**8/*8,*820.92 4.50E+09  
57*/7*8*8,*820.92 4.50E+09  
577**82*8,*8,0.87 4.25E+09  
57*7**82*8,*8,0.87 4.25E+09  
577**82*8,*8,0.87 4.25E+09  
577**82*8+*8,0.87 4.25E+09  
5757*58/*8+1.02 5.00E+09  
5717*8*5.11 2.50E+10  
57+7*88*811.28 6.25E+09  
57,7*8**8/*8/0.97 4.75E+09  
5727**8/*8,*820.92 4.50E+09  
57/7**8,*8+*8+0.82 4.00E+09  
577**82*81*8+0.82 4.00E+09  
17*7**8+*81*810.77 3.75E+09  
177**81*85*810.77 3.75E+09  
177**8,*8*850.71 3.50E+09  
1757**85*8*80.66 3.25E+09  
1717**8*8*80.66 3.25E+09  
17+7**8*8*80.61 3.00E+09  
17,7**8*8**80.61 3.00E+09  
1727**85*8*80.66 3.25E+09  
17/7**8*8**80.61 3.00E+09 /4.63E+09
17*7**8*8**80.61 3.00E+09  
17**7**88//*8*0.56 2.75E+09  
17*7**8*8//*8*0.56 2.75E+09  
17*7**8*8/8/,0.50 2.42E+09  
17*57*8/8218/*0.46 2.27E+09  
TMDL for Fecal Coliform Bacteria: McKee and Clear Creeks June 2003

57
17*17*8/8218/0.46 2.25E+09  
17*+7*8/8218220.45 2.20E+09 ,3.70E+09
17*,7**8*8/8/+0.49 2.40E+09  
17*27**8*8/*0.51 2.50E+09  
17*/7*28,/*29.19 4.50E+10  
177*52*8+18,2.91 1.42E+10  
17*7**8+*8*80.66 3.25E+09  
177***8*8,1.89 9.24E+09  
177*582*81.02 5.00E+09  
1757*8*8**80.66 3.25E+09  
1717*+8*88*1.07 5.25E+09  
17+7*/*8/284.19 2.05E+10  
17,7**8/*8*850.71 3.50E+09  
1727***8*52.04 9.99E+09  
17/7*18**828/1.48 7.25E+09  
177**82*8*850.71 3.50E+09 1*29.06E+09
17*7**8*8**80.61 3.00E+09  
+7*7*+5*8*28/4.54 2.22E+10  
+77*+8+*828*1.58 7.75E+09  
+77**82*8**850.71 3.50E+09  
+757**8*8//*8*0.56 2.75E+09  
+717*8//8218/10.49 2.37E+09 5*4.05E+09
+7+7*8/8,/82,0.44 2.17E+09  
+7,7*8//8,/82*0.41 2.02E+09  
+727**818,/*0.51 2.50E+09  
+7/7**8*8218/,0.50 2.42E+09  
+7*7*8//8,820.41 2.00E+09  
+7**7*8,8+8,0.36 1.75E+09  
+7*7*8+,8+8+10.33 1.62E+09  
+7*7*,8++8,3.42 1.67E+10  
+7*57**+*88*1.58 7.75E+09  
+7*17**88218/,0.50 2.42E+09  
+7*+7*8//8,820.42 2.05E+09  
+7*,7*8//8+8,,0.39 1.92E+09  
+7*27*8+,81,8+*0.31 1.52E+09  
+7*/7*8+,81,8+0.31 1.50E+09  
+77*81,81810.27 1.32E+09  
+7*7*8185281*0.26 1.27E+09  
+77*18*852*0.51 2.50E+09  
+77*58*8+*80.66 3.25E+09  
+757**8818,50.38 1.85E+09  
+717*8,852810.27 1.32E+09  
TMDL for Fecal Coliform Bacteria: McKee and Clear Creeks June 2003

58
+7+7*5885582+0.44 2.15E+09  
+7,7*858558250.43 2.10E+09  
+727*81858510.23 1.12E+09  
+7/7*8185850.21 1.05E+09  
+77**88,8150.28 1.35E+09  
,7*7*81828+0.18 8.99E+08  
,77*88280.15 7.50E+08  
,77*8828550.22 1.10E+09  
,757**855*80.66 3.25E+09  
,717*/8581,1.02 5.00E+09  
,7+7*81,885*0.21 1.02E+09  
,7,7*88280.15 7.50E+08  
,727*81828,0.19 9.24E+08  
,7/7*8+,8,810.27 1.30E+09  
,7*7*8,8280.17 8.25E+08  
,7**7*828810.13 6.25E+08  
,7*7*81880.11 5.50E+08  
,7*7**8*8*81*0.26 1.27E+09  
,7*57*8+818,0.19 9.24E+08  
,7*17*8188*0.11 5.25E+08  
,7*+7*88*18*,0.09 4.25E+08  
,7*,7*8*28*18*+0.08 4.00E+08  
,7*27*8*+8*18*+0.08 4.00E+08  
,7*/7*8*+8*18*+0.08 4.00E+08  
,77*8*+8*58*10.08 3.75E+08  
,7*7*8*18**8*0.07 3.25E+08  
,77*8*8/8**0.06 2.75E+08  
,77*858*8*+0.08 4.00E+08  
,757*1818*1*8*0.56 2.75E+09  
,717*+5852+83.17 1.55E+10  
,7+7*588,/*820.92 4.50E+09  
,7,7*8,/8558150.28 1.35E+09  
,727*8185850.20 9.99E+08  
,7/7*8528280.17 8.25E+08  
,77*852858/0.20 9.74E+08  
,7*7*8588+0.13 6.50E+08  
27*7*888*0.11 5.25E+08  
277*8*880.10 5.00E+08  
277*88*18*,0.09 4.25E+08  
2757*8*+8*18*+0.08 4.00E+08  
2717*8*+8*58*10.08 3.75E+08  
27+7*8*18*8*50.07 3.50E+08  
TMDL for Fecal Coliform Bacteria: McKee and Clear Creeks June 2003

59
27,7*8*58*8*0.06 3.00E+08  
2727*8**8/8*0.05 2.50E+08  
27/7*8/8,820.04 2.00E+08  
27*7*8,818+0.03 1.50E+08  
27**7*85818*10.08 3.75E+08  
27*7*8*58/8**0.06 2.75E+08  
27*7**8,1.02 5.00E+09  
27*57**8,8*8120.30 1.45E+09  
27*17*8*8*58*,0.09 4.25E+08  
27*+7*8*58/8**0.06 2.75E+08  
27*,7*8,/8,8*0.06 3.00E+08  
27*27*58585*8*0.56 2.75E+09  
27*/7*858*58*0.11 5.25E+08  
277*8*58/8*0.06 3.00E+08  
27*7*8/8+8,0.04 1.75E+08  
277*8+85810.03 1.25E+08  
277*858850.02 9.99E+07  
2757*8880.02 7.50E+07  
2717*8880.02 7.50E+07  
27+7*8880.02 7.50E+07  
27,7*8880.01 5.00E+07  
2727*8880.01 5.00E+07  
27/7*8880.01 5.00E+07  
277*8880.01 5.00E+07  
27*7*82188/0.05 2.25E+08  
/7*7*818**8/0.15 7.25E+08  
/77*818**8*+0.08 4.00E+08  
/77*8*582.20 1.07E+10  
/757*1825/814.85 2.37E+10  
/717**858*18150.28 1.35E+09  
/7+7*8*18+8*0.05 2.50E+08  
/7,7*8+818+0.03 1.50E+08  
/727*8181810.03 1.25E+08  
/7/7*8+818*+0.08 4.00E+08  
/7*7**8*8+0.18 8.99E+08  
/7**7*8858,0.04 1.75E+08  
/7*7*8585850.02 9.99E+07  
/7*7*8585850.02 9.99E+07  
/7*57*8585850.02 9.99E+07  
/7*17*85880.02 7.50E+07  
/7*+7*8880.02 7.50E+07  
/7*,7*8880.02 7.50E+07  
TMDL for Fecal Coliform Bacteria: McKee and Clear Creeks June 2003

60
/7*27*8880.02 7.50E+07  
/7*/7*8880.02 7.50E+07  
/77*2888120.30 1.45E+09  
/7*7*8*8+85*0.21 1.02E+09  
/77*8+81810.03 1.25E+08  
/77*8185850.02 9.99E+07  
/757**8510.21 5.00E+10  
/717*8288/0.46 2.25E+09  
/7+7*88*8*,0.09 4.25E+08  
/7,7*8*18/8**0.06 2.75E+08  
/727*8*/8,8**0.06 2.75E+08  
/7/7*8/8,820.04 2.00E+08  
/77*8*8/8/0.05 2.25E+08  
*7*7*8*8*8*0.05 2.50E+08  
*77*8*8*8*0.06 3.00E+08  
*77*8*18*8**0.06 2.75E+08  
*757*8*18*8**0.06 2.75E+08  
*717*8*/8*8*10.08 3.75E+08  
*7+7**8+8*/8220.45 2.20E+09  
*7,7**85818+/0.35 1.72E+09  
*727*818*18,0.14 6.75E+08  
*7/7*88*80.10 5.00E+08  
*7*7*8/588+0.32 1.57E+09  
*7**7*818*/850.12 6.00E+08  
*7*7*8/8*/850.12 6.00E+08  
*7*7*8/8/810.18 8.74E+08  
*7*57*/8*8/*820.92 4.50E+09  
*7*17**8,88+0.31 1.50E+09  
*7*+7*88*8*10.08 3.75E+08  
*7*,7*8*8*8*0.05 2.50E+08  
*7*27*8*18*8*0.06 3.00E+08  
*7*/7*8*/8*18*,0.09 4.25E+08  
*77*88*/80.10 5.00E+08  
*7*7*81188,0.14 6.75E+08  
*77*855880.16 8.00E+08  
*77*8/8*/80.12 5.75E+08  
*757*8/88+0.13 6.50E+08  
*717*/8,8811.28 6.25E+09  
*7+7*8+/8*/8,0.19 9.24E+08  
*7,7*88*/8*0.11 5.25E+08  
*727*8*/8*18*/0.10 4.75E+08  
*7/7*8/8*/850.12 6.00E+08  
TMDL for Fecal Coliform Bacteria: McKee and Clear Creeks June 2003

61
*77*818/8/0.15 7.25E+08  
*7*7*818/850.17 8.50E+08  
**7*7*81181850.20 9.99E+08  
**77*8+8/810.27 1.30E+09  
**77*8185585+0.23 1.15E+09  
**757*818/8550.22 1.10E+09  
**717*81828,0.14 6.75E+08  
**7+7*8*8*8*0.06 3.00E+08  
**7,7*8*8*8*0.06 3.00E+08  
**727*8*8*8**0.06 2.75E+08  
**7/7*8*18*8*0.07 3.25E+08  
**7*7*8*18*8*10.08 3.75E+08  
**7**7*88*80.10 5.00E+08  
**7*7*88*/80.10 5.00E+08  
**7*7*88*/8*0.11 5.25E+08  
**7*57*8/88+0.13 6.50E+08  
**7*17*8/88,0.14 6.75E+08  
**7*+7*8/8820.14 7.00E+08  
**7*,7*8/88,0.14 6.75E+08  
**7*27*8/8850.12 6.00E+08  
**7*/7*8880.12 5.75E+08  
**77*8/8850.12 6.00E+08  
**7*7*8/8*/850.12 6.00E+08  
**77*818820.14 7.00E+08  
**77*8118/850.17 8.50E+08  
**757**858118/20.50 2.45E+09  
**717*8,,8181*0.26 1.27E+09  
**7+7*8188,0.14 6.75E+08  
**7,7*88*18*/0.10 4.75E+08  
**727*8*/8*18*+0.08 4.00E+08  
**7/7*8*/8*18*+0.08 4.00E+08  
**77*8/8*/80.11 5.50E+08  
*7*7*88*/80.12 5.75E+08  
*77*88*18*,0.09 4.25E+08  
*77*8*1828*0.06 3.00E+08  
*757*8*18*8*0.06 3.00E+08  
*717*818*8*10.08 3.75E+08  
*7+7*8*18*8*0.07 3.25E+08  
*7,7*8*/8*8*10.08 3.75E+08  
*727*8*/8*18*+0.08 4.00E+08  
*7/7*8*/8*8*10.08 3.75E+08  
*7*7*5+8*284.24 2.07E+10  
TMDL for Fecal Coliform Bacteria: McKee and Clear Creeks June 2003

62
*7**7**8+3.06 1.50E+10  
*7*7**88118,20.40 1.95E+09  
*7*7*81181810.27 1.32E+09  
*7*57*821818+0.32 1.57E+09  
*7*17*8,,8/8150.28 1.35E+09  
*7*+7*8/8/80.17 8.25E+08  
*7*,7*8/81+0.29 1.40E+09  
*7*27*+8*821811.28 6.25E+09  
*7*/7*8218558120.30 1.45E+09  
*77*818/0.47 2.30E+09  
*7*7*81880.15 7.50E+08  
*77*8/8*1850.12 6.00E+08  
*77*8188+0.13 6.50E+08  
*757*85581850.20 9.99E+08  
*717*8/8/810.18 8.74E+08  
*7+7*8/88,0.14 6.75E+08  
*7,7*8/8820.14 7.00E+08  
*727*8/88+0.13 6.50E+08  
*7/7*818/8/0.15 7.25E+08  
*77*8188/0.15 7.25E+08  
*7*7*818/8/0.15 7.25E+08  
*7*7818/8*0.16 7.75E+08  
*77818/810.18 8.74E+08  
*778,,8558+,0.34 1.67E+09  
*757*88,,8/*0.46 2.27E+09  
*717*858,,8/,0.50 2.42E+09  
*7+7,8+/*57.15 3.50E+10  
*7,7+8+*8+1.53 7.50E+09  
*727*8+8/5*80.61 3.00E+09  
*7/7*8+8,,8/10.49 2.37E+09  
*7*7*858+820.42 2.07E+09  
*7**78+/8118+0.32 1.55E+09  
*7*78,,81181/0.30 1.47E+09  
*7*7*8,,82,0.44 2.17E+09  
*7*578,,8181/0.30 1.47E+09  
*7*1781181810.26 1.25E+09  
*7*+7818558520.25 1.20E+09  
*7*,78558558550.22 1.10E+09  
*7*27818558510.23 1.12E+09  
*7*/7*5855517.36 8.50E+10  
*77,581*57.15 3.50E+10  
*7*7/8*8558,2.40 1.17E+10  
TMDL for Fecal Coliform Bacteria: McKee and Clear Creeks June 2003

63
*77585*828,1.38 6.75E+09  
*77,*82+133.19 1.62E+11  
*757*,18,,853.78 1.85E+10  
*71712+8+512.25 6.00E+10  
*7+7+8+85852.25 1.10E+10  
*7,78*8,811.28 6.25E+09  
*727*8/*8+*8,0.87 4.25E+09  
*7/7*8+*8*810.77 3.75E+09  
*77*8*8*80.66 3.25E+09  
*7*782**80.66 3.25E+09  
7*758**8581.17 5.75E+09  
77*85*8**80.61 3.00E+09  
77*8*8/5*0.51 2.50E+09  
757*8*8/5*0.51 2.50E+09  
717***0.51 2.50E+09  
7+718***810.77 3.75E+09  
7,7518**17.66 3.75E+10  
727558/*6.13 3.00E+10  
7/758/8,811.79 8.74E+09  
7*782858+1.33 6.50E+09  
7**781*8,8*1.07 5.25E+09  
7*78,*85*8,0.87 4.25E+09  
7*78**8*850.71 3.50E+09  
7*57*8,*8**80.61 3.00E+09  
7*17*85**8*0.56 2.75E+09  
7*+7*8***8*0.56 2.75E+09  
7*,7*8/5*0.51 2.50E+09  
7*278/58258220.45 2.20E+09  
7*/78/58258210.43 2.12E+09  
77*8258/*0.46 2.27E+09  
7*7*8258/10.49 2.37E+09  
77*82582+0.44 2.15E+09  
778258,1820.42 2.07E+09  
7578258,18,/0.40 1.97E+09  
7178258,1820.42 2.05E+09  
7+78/58258/*0.46 2.27E+09  
7,78/582582/0.45 2.22E+09  
7278258,1820.42 2.07E+09  
7*78/58,1820.42 2.07E+09  
77*182515.32 7.50E+10  
771/85512.25 6.00E+10  
757/858,18+2.86 1.40E+10  
TMDL for Fecal Coliform Bacteria: McKee and Clear Creeks June 2003

64
7178,818/1.48 7.25E+09  
7+7818*81.12 5.50E+09  
7,78*82*8/0.97 4.75E+09  
727*82*8+*8+0.82 4.00E+09  
7/7*8+*85*810.77 3.75E+09  
7*7*8+*8*850.71 3.50E+09  
7**7*8*8*80.61 3.00E+09  
7*718*8821.43 7.00E+09  
7*7,818182.71 1.32E+10  
7*5758851.53 7.50E+09  
7*1785*821.02 5.00E+09  
7*+7*8/*8,*8,0.87 4.25E+09  
7*,7+*8+*5.11 2.50E+10  
7*27,8,858,2.40 1.17E+10  
7*/7885821.43 7.00E+09  
7718/88/1.48 7.25E+09  
7*7*181*17.66 3.75E+10  
77,8185822.45 1.20E+10  
77881821.43 7.00E+09  
757818*81.17 5.75E+09  
7178**8/0.97 4.75E+09  
7+758**8281.12 5.50E+09  
7,758*81.17 5.75E+09  
7278**8+*8+0.82 4.00E+09  
7/7*8+*85*810.77 3.75E+09  
7781*851.02 5.00E+09  
7*7**8*57.15 3.50E+10  
57*7**18/512.25 6.00E+10  
57718/815852.25 1.10E+10  
57758/82811.79 8.74E+09  
575758585821.43 7.00E+09  
571785*8/8*1.07 5.25E+09  
57+78/*8,81.12 5.50E+09  
57,7*8/*85*8+0.82 4.00E+09  
57278*8*810.77 3.75E+09  
57/78*8*8+0.82 4.00E+09  
57*78,*8/81.12 5.50E+09  
57**781*85*8,0.87 4.25E+09  
57*7*82*8*8+0.82 4.00E+09  
57*7*82*85*8+0.82 4.00E+09  
57*578*8*810.77 3.75E+09  
57*17*8*8**80.61 3.00E+09  
TMDL for Fecal Coliform Bacteria: McKee and Clear Creeks June 2003

65
57*+7*8**8*0.56 2.75E+09  
57*,7*8*8/5*0.51 2.50E+09  
57*27*8258/50.48 2.35E+09  
57*/78/582582/0.45 2.22E+09  
5778/5820.42 2.05E+09  
57*78/58,18,/0.40 1.97E+09  
5778,18+,8+/0.35 1.72E+09  
5778+,81581/0.30 1.47E+09  
57578+81,0.29 1.42E+09  
5717*858+,0.34 1.67E+09  
57+78,18528110.28 1.37E+09  
57,78+8528150.28 1.35E+09  
57278+,85281/0.30 1.47E+09  
57/78+85810.27 1.32E+09  
577858850.20 9.99E+08  
17*7,8,8*810.77 3.75E+09  
1778/585281,0.29 1.42E+09  
17782815*8*0.56 2.75E+09  
1757/8,8/558,2.40 1.17E+10  
1717818,1*80.61 3.00E+09  
17+78,18158+0.32 1.57E+09  
17,7815858520.25 1.20E+09  
17278528,850.20 9.99E+08  
17/78,8,850.17 8.50E+08  
17*7858820.14 7.00E+08  
17**7*881+0.29 1.40E+09  
17*78158,0.14 6.75E+08  
Average Flow & Load at 200 cfu/100 ml 1.22 5.99E+09

TMDL for Fecal Coliform Bacteria: McKee and Clear Creeks June 2003

66
APPENDIX F -- RANKED DATA USED TO GENERATE THE FLOW DURATION AND
LOAD DURATION CURVES FOR BOTH THE “200” AND “400” STANDARDS

MCK-2 MCK-2
McKEE CREEK AT MCK-2 Daily
RANKED RANKED RANKED Sample Calculated
FLOW LOAD at LOAD at Geomean Actual Stream
RANK %Exceed cfs 200/100ml 400/100ml ConcentrationLoad in
in cfu/100 ml cfu/day
1 99.9 0.02 7.61E+07 1.52E+08
2 99.7 0.02 7.61E+07 1.52E+08
3 99.6 0.02 7.61E+07 1.52E+08
4 99.5 0.02 7.61E+07 1.52E+08
5 99.3 0.02 1.14E+08 2.28E+08
6 99.2 0.02 1.14E+08 2.28E+08
7 99.0 0.02 1.14E+08 2.28E+08
8 98.9 0.02 1.14E+08 2.28E+08
9 98.8 0.02 1.14E+08 2.28E+08
10 98.6 0.02 1.14E+08 2.28E+08
11 98.5 0.02 1.14E+08 2.28E+08
12 98.4 0.02 1.14E+08 2.28E+08
13 98.2 0.03 1.52E+08 3.04E+08
14 98.1 0.03 1.52E+08 3.04E+08
15 97.9 0.03 1.52E+08 3.04E+08
16 97.8 0.03 1.52E+08 3.04E+08
17 97.7 0.03 1.52E+08 3.04E+08
18 97.5 0.04 1.90E+08 3.81E+08
19 97.4 0.04 1.90E+08 3.81E+08
20 97.3 0.04 1.90E+08 3.81E+08
21 97.1 0.05 2.28E+08 4.57E+08
22 97.0 0.05 2.28E+08 4.57E+08
23 96.9 0.05 2.66E+08 5.33E+08
24 96.7 0.05 2.66E+08 5.33E+08
25 96.6 0.06 3.04E+08 6.09E+08
26 96.4 0.06 3.04E+08 6.09E+08
27 96.3 0.06 3.04E+08 6.09E+08
28 96.2 0.06 3.04E+08 6.09E+08
29 96.0 0.06 3.04E+08 6.09E+08
30 95.9 0.07 3.43E+08 6.85E+08
31 95.8 0.07 3.43E+08 6.85E+08
32 95.6 0.07 3.43E+08 6.85E+08
33 95.5 0.08 3.81E+08 7.61E+08
34 95.3 0.08 3.81E+08 7.61E+08
35 95.2 0.08 3.81E+08 7.61E+08
36 95.1 0.08 3.81E+08 7.61E+08
37 94.9 0.08 3.81E+08 7.61E+08
38 94.8 0.09 4.19E+08 8.37E+08
39 94.7 0.09 4.19E+08 8.37E+08
40 94.5 0.09 4.19E+08 8.37E+08
41 94.4 0.09 4.19E+08 8.37E+08
TMDL for Fecal Coliform Bacteria: McKee and Clear Creeks June 2003

67
42 94.3 0.09 4.19E+08 8.37E+08
43 94.1 0.09 4.19E+08 8.37E+08
44 94.0 0.09 4.19E+08 8.37E+08
45 93.8 0.09 4.19E+08 8.37E+08
46 93.7 0.09 4.19E+08 8.37E+08
47 93.6 0.09 4.19E+08 8.37E+08
48 93.4 0.09 4.57E+08 9.13E+08
49 93.3 0.09 4.57E+08 9.13E+08
50 93.2 0.09 4.57E+08 9.13E+08
51 93.0 0.09 4.57E+08 9.13E+08
52 92.9 0.09 4.57E+08 9.13E+08
53 92.7 0.09 4.57E+08 9.13E+08
54 92.6 0.09 4.57E+08 9.13E+08
55 92.5 0.09 4.57E+08 9.13E+08
56 92.3 0.09 4.57E+08 9.13E+08
57 92.2 0.09 4.57E+08 9.13E+08
58 92.1 0.09 4.57E+08 9.13E+08
59 91.9 0.10 4.95E+08 9.90E+08
60 91.8 0.10 4.95E+08 9.90E+08
61 91.7 0.10 4.95E+08 9.90E+08
62 91.5 0.10 4.95E+08 9.90E+08
63 91.4 0.11 5.33E+08 1.07E+09
64 91.2 0.12 5.71E+08 1.14E+09
65 91.1 0.12 5.71E+08 1.14E+09
66 91.0 0.12 5.71E+08 1.14E+09
67 90.8 0.12 5.71E+08 1.14E+09
68 90.7 0.12 5.71E+08 1.14E+09
69 90.6 0.12 5.71E+08 1.14E+09
70 90.4 0.12 5.71E+08 1.14E+09
71 90.3 0.12 5.71E+08 1.14E+09
72 90.2 0.12 5.71E+08 1.14E+09
73 90.0 0.12 5.71E+08 1.14E+09
74 89.9 0.12 5.71E+08 1.14E+09
75 89.7 0.12 5.71E+08 1.14E+09
76 89.6 0.12 6.09E+08 1.22E+09
77 89.5 0.12 6.09E+08 1.22E+09
78 89.3 0.12 6.09E+08 1.22E+09
79 89.2 0.12 6.09E+08 1.22E+09
80 89.1 0.12 6.09E+08 1.22E+09
81 88.9 0.12 6.09E+08 1.22E+09
82 88.8 0.12 6.09E+08 1.22E+09
83 88.6 0.12 6.09E+08 1.22E+09
84 88.5 0.12 6.09E+08 1.22E+09
85 88.4 0.12 6.09E+08 1.22E+09
86 88.2 0.13 6.47E+08 1.29E+09
87 88.1 0.13 6.47E+08 1.29E+09
88 88.0 0.13 6.47E+08 1.29E+09
89 87.8 0.13 6.47E+08 1.29E+09
90 87.7 0.13 6.47E+08 1.29E+09
91 87.6 0.13 6.47E+08 1.29E+09
92 87.4 0.13 6.47E+08 1.29E+09
TMDL for Fecal Coliform Bacteria: McKee and Clear Creeks June 2003

68
93 87.3 0.14 6.85E+08 1.37E+09
94 87.1 0.14 6.85E+08 1.37E+09
95 87.0 0.14 6.85E+08 1.37E+09
96 86.9 0.14 6.85E+08 1.37E+09
97 86.7 0.15 7.23E+08 1.45E+09
98 86.6 0.15 7.23E+08 1.45E+09
99 86.5 0.16 7.61E+08 1.52E+09
100 86.3 0.16 7.61E+08 1.52E+09
101 86.2 0.16 7.61E+08 1.52E+09
102 86.0 0.16 7.61E+08 1.52E+09
103 85.9 0.16 7.61E+08 1.52E+09
104 85.8 0.16 7.61E+08 1.52E+09
105 85.6 0.16 7.99E+08 1.60E+09
106 85.5 0.16 7.99E+08 1.60E+09
107 85.4 0.16 7.99E+08 1.60E+09
108 85.2 0.16 7.99E+08 1.60E+09
109 85.1 0.16 7.99E+08 1.60E+09
110 85.0 0.16 7.99E+08 1.60E+09
111 84.8 0.16 7.99E+08 1.60E+09
112 84.7 0.17 8.37E+08 1.67E+09
113 84.5 0.17 8.37E+08 1.67E+09
114 84.4 0.18 8.75E+08 1.75E+09
115 84.3 0.18 8.75E+08 1.75E+09
116 84.1 0.18 8.75E+08 1.75E+09
117 84.0 0.18 8.75E+08 1.75E+09
118 83.9 0.18 8.75E+08 1.75E+09
119 83.7 0.19 9.13E+08 1.83E+09
120 83.6 0.19 9.13E+08 1.83E+09
121 83.4 0.19 9.13E+08 1.83E+09
122 83.3 0.19 9.13E+08 1.83E+09
123 83.2 0.19 9.13E+08 1.83E+09
124 83.0 0.19 9.13E+08 1.83E+09
125 82.9 0.19 9.13E+08 1.83E+09
126 82.8 0.19 9.13E+08 1.83E+09
127 82.6 0.19 9.13E+08 1.83E+09
128 82.5 0.19 9.51E+08 1.90E+09
129 82.4 0.19 9.51E+08 1.90E+09
130 82.2 0.19 9.51E+08 1.90E+09
131 82.1 0.20 9.90E+08 1.98E+09
132 81.9 0.20 9.90E+08 1.98E+09
133 81.8 0.20 9.90E+08 1.98E+09
134 81.7 0.20 9.90E+08 1.98E+09
135 81.5 0.20 9.90E+08 1.98E+09
136 81.4 0.20 9.90E+08 1.98E+09
137 81.3 0.21 1.03E+09 2.06E+09
138 81.1 0.21 1.03E+09 2.06E+09
139 81.0 0.21 1.03E+09 2.06E+09
140 80.8 0.21 1.03E+09 2.06E+09
141 80.7 0.21 1.03E+09 2.06E+09
142 80.6 0.21 1.03E+09 2.06E+09
143 80.4 0.21 1.03E+09 2.06E+09
TMDL for Fecal Coliform Bacteria: McKee and Clear Creeks June 2003

69
144 80.3 0.21 1.03E+09 2.06E+09
145 80.2 0.21 1.03E+09 2.06E+09
146 80.0 0.22 1.07E+09 2.13E+09
147 79.9 0.22 1.07E+09 2.13E+09
148 79.8 0.22 1.07E+09 2.13E+09
149 79.6 0.22 1.07E+09 2.13E+09
150 79.5 0.22 1.07E+09 2.13E+09
151 79.3 0.23 1.10E+09 2.21E+09
152 79.2 0.23 1.10E+09 2.21E+09
153 79.1 0.23 1.10E+09 2.21E+09
154 78.9 0.23 1.10E+09 2.21E+09
155 78.8 0.23 1.10E+09 2.21E+09
156 78.7 0.23 1.10E+09 2.21E+09
157 78.5 0.23 1.14E+09 2.28E+09
158 78.4 0.23 1.14E+09 2.28E+09
159 78.2 0.23 1.14E+09 2.28E+09
160 78.1 0.23 1.14E+09 2.28E+09
161 78.0 0.23 1.14E+09 2.28E+09
162 77.8 0.24 1.18E+09 2.36E+09
163 77.7 0.24 1.18E+09 2.36E+09
164 77.6 0.25 1.22E+09 2.44E+09
165 77.4 0.25 1.22E+09 2.44E+09
166 77.3 0.26 1.26E+09 2.51E+09
167 77.2 0.26 1.26E+09 2.51E+09
168 77.0 0.26 1.26E+09 2.51E+09
169 76.9 0.26 1.26E+09 2.51E+09
170 76.7 0.26 1.29E+09 2.59E+09
171 76.6 0.26 1.29E+09 2.59E+09
172 76.5 0.26 1.29E+09 2.59E+09
173 76.3 0.26 1.29E+09 2.59E+09
174 76.2 0.26 1.29E+09 2.59E+09
175 76.1 0.26 1.29E+09 2.59E+09
176 75.9 0.27 1.33E+09 2.66E+09
177 75.8 0.27 1.33E+09 2.66E+09
178 75.6 0.27 1.33E+09 2.66E+09
179 75.5 0.27 1.33E+09 2.66E+09
180 75.4 0.27 1.33E+09 2.66E+09
181 75.2 0.28 1.37E+09 2.74E+09
182 75.1 0.28 1.37E+09 2.74E+09
183 75.0 0.28 1.37E+09 2.74E+09
184 74.8 0.29 1.41E+09 2.82E+09
185 74.7 0.29 1.41E+09 2.82E+09
186 74.6 0.29 1.41E+09 2.82E+09
187 74.4 0.29 1.41E+09 2.82E+09
188 74.3 0.29 1.41E+09 2.82E+09
189 74.1 0.30 1.45E+09 2.89E+09
190 74.0 0.30 1.48E+09 2.97E+09
191 73.9 0.30 1.48E+09 2.97E+09
192 73.7 0.30 1.48E+09 2.97E+09
193 73.6 0.30 1.48E+09 2.97E+09
194 73.5 0.30 1.48E+09 2.97E+09
TMDL for Fecal Coliform Bacteria: McKee and Clear Creeks June 2003

70
195 73.3 0.30 1.48E+09 2.97E+09
196 73.2 0.31 1.52E+09 3.04E+09
197 73.1 0.31 1.52E+09 3.04E+09
198 72.9 0.31 1.52E+09 3.04E+09
199 72.8 0.31 1.52E+09 3.04E+09
200 72.6 0.31 1.52E+09 3.04E+09
201 72.5 0.31 1.52E+09 3.04E+09
202 72.4 0.32 1.56E+09 3.12E+09
203 72.2 0.32 1.56E+09 3.12E+09
204 72.1 0.32 1.56E+09 3.12E+09
205 72.0 0.32 1.56E+09 3.12E+09
206 71.8 0.33 1.60E+09 3.20E+09
207 71.7 0.33 1.60E+09 3.20E+09
208 71.5 0.33 1.60E+09 3.20E+09
209 71.4 0.33 1.64E+09 3.27E+09
210 71.3 0.33 1.64E+09 3.27E+09
211 71.1 0.33 1.64E+09 3.27E+09
212 71.0 0.34 1.67E+09 3.35E+09
213 70.9 0.34 1.67E+09 3.35E+09
214 70.7 0.34 1.67E+09 3.35E+09
215 70.6 0.34 1.67E+09 3.35E+09
216 70.5 0.34 1.67E+09 3.35E+09
217 70.3 0.34 1.67E+09 3.35E+09
218 70.2 0.35 1.71E+09 3.43E+09
219 70.0 0.35 1.71E+09 3.43E+09
220 69.9 0.35 1.71E+09 3.43E+09
221 69.8 0.35 1.71E+09 3.43E+09
222 69.6 0.35 1.71E+09 3.43E+09
223 69.5 0.35 1.71E+09 3.43E+09
224 69.4 0.35 1.71E+09 3.43E+09
225 69.2 0.35 1.71E+09 3.43E+09
226 69.1 0.36 1.75E+09 3.50E+09
227 68.9 0.36 1.75E+09 3.50E+09
228 68.8 0.36 1.75E+09 3.50E+09
229 68.7 0.37 1.79E+09 3.58E+09
230 68.5 0.37 1.79E+09 3.58E+09
231 68.4 0.37 1.83E+09 3.65E+09
232 68.3 0.37 1.83E+09 3.65E+09
233 68.1 0.37 1.83E+09 3.65E+09
234 68.0 0.37 1.83E+09 3.65E+09
235 67.9 0.37 1.83E+09 3.65E+09
236 67.7 0.37 1.83E+09 3.65E+09
237 67.6 0.38 1.86E+09 3.73E+09
238 67.4 0.38 1.86E+09 3.73E+09
239 67.3 0.38 1.86E+09 3.73E+09
240 67.2 0.38 1.86E+09 3.73E+09
241 67.0 0.38 1.86E+09 3.73E+09
242 66.9 0.38 1.86E+09 3.73E+09
243 66.8 0.38 1.86E+09 3.73E+09
244 66.6 0.39 1.90E+09 3.81E+09
245 66.5 0.39 1.90E+09 3.81E+09
TMDL for Fecal Coliform Bacteria: McKee and Clear Creeks June 2003

71
246 66.3 0.40 1.94E+09 3.88E+09
247 66.2 0.40 1.94E+09 3.88E+09
248 66.1 0.40 1.94E+09 3.88E+09
249 65.9 0.40 1.94E+09 3.88E+09
250 65.8 0.40 1.94E+09 3.88E+09
251 65.7 0.40 1.94E+09 3.88E+09
252 65.5 0.40 1.94E+09 3.88E+09
253 65.4 0.40 1.98E+09 3.96E+09
254 65.3 0.40 1.98E+09 3.96E+09
255 65.1 0.40 1.98E+09 3.96E+09
256 65.0 0.40 1.98E+09 3.96E+09
257 64.8 0.40 1.98E+09 3.96E+09
258 64.7 0.40 1.98E+09 3.96E+09
259 64.6 0.41 2.02E+09 4.03E+09
260 64.4 0.41 2.02E+09 4.03E+09
261 64.3 0.41 2.02E+09 4.03E+09
262 64.2 0.41 2.02E+09 4.03E+09
263 64.0 0.41 2.02E+09 4.03E+09
264 63.9 0.41 2.02E+09 4.03E+09
265 63.7 0.41 2.02E+09 4.03E+09
266 63.6 0.41 2.02E+09 4.03E+09
267 63.5 0.41 2.02E+09 4.03E+09
268 63.3 0.42 2.06E+09 4.11E+09
269 63.2 0.42 2.06E+09 4.11E+09
270 63.1 0.42 2.06E+09 4.11E+09
271 62.9 0.42 2.06E+09 4.11E+09
272 62.8 0.42 2.06E+09 4.11E+09
273 62.7 0.42 2.06E+09 4.11E+09
274 62.5 0.43 2.09E+09 4.19E+09
275 62.4 0.43 2.09E+09 4.19E+09
276 62.2 0.43 2.09E+09 4.19E+09
277 62.1 0.43 2.09E+09 4.19E+09
278 62.0 0.44 2.13E+09 4.26E+09
279 61.8 0.44 2.13E+09 4.26E+09
280 61.7 0.44 2.13E+09 4.26E+09
281 61.6 0.44 2.13E+09 4.26E+09
282 61.4 0.44 2.17E+09 4.34E+09
283 61.3 0.44 2.17E+09 4.34E+09
284 61.1 0.44 2.17E+09 4.34E+09
285 61.0 0.44 2.17E+09 4.34E+09
286 60.9 0.44 2.17E+09 4.34E+09
287 60.7 0.44 2.17E+09 4.34E+09
288 60.6 0.45 2.21E+09 4.41E+09
289 60.5 0.45 2.21E+09 4.41E+09
290 60.3 0.45 2.21E+09 4.41E+09
291 60.2 0.45 2.21E+09 4.41E+09
292 60.1 0.45 2.21E+09 4.41E+09
293 59.9 0.45 2.21E+09 4.41E+09
294 59.8 0.46 2.25E+09 4.49E+09
295 59.6 0.46 2.25E+09 4.49E+09
296 59.5 0.46 2.25E+09 4.49E+09
TMDL for Fecal Coliform Bacteria: McKee and Clear Creeks June 2003

72
297 59.4 0.46 2.25E+09 4.49E+09
298 59.2 0.46 2.25E+09 4.49E+09
299 59.1 0.46 2.25E+09 4.49E+09
300 59.0 0.47 2.28E+09 4.57E+09
301 58.8 0.47 2.28E+09 4.57E+09
302 58.7 0.47 2.28E+09 4.57E+09
303 58.5 0.47 2.28E+09 4.57E+09
304 58.4 0.47 2.32E+09 4.64E+09
305 58.3 0.47 2.32E+09 4.64E+09
306 58.1 0.47 2.32E+09 4.64E+09
307 58.0 0.48 2.36E+09 4.72E+09
308 57.9 0.49 2.40E+09 4.80E+09
309 57.7 0.49 2.40E+09 4.80E+09
310 57.6 0.49 2.40E+09 4.80E+09
311 57.5 0.49 2.40E+09 4.80E+09
312 57.3 0.49 2.40E+09 4.80E+09
313 57.2 0.49 2.40E+09 4.80E+09
314 57.0 0.50 2.44E+09 4.87E+09
315 56.9 0.50 2.44E+09 4.87E+09
316 56.8 0.50 2.44E+09 4.87E+09
317 56.6 0.50 2.44E+09 4.87E+09
318 56.5 0.50 2.44E+09 4.87E+09
319 56.4 0.51 2.47E+09 4.95E+09
320 56.2 0.51 2.47E+09 4.95E+09
321 56.1 0.51 2.47E+09 4.95E+09
322 56.0 0.51 2.51E+09 5.02E+09
323 55.8 0.51 2.51E+09 5.02E+09
324 55.7 0.52 2.55E+09 5.10E+09
325 55.5 0.52 2.55E+09 5.10E+09
326 55.4 0.52 2.55E+09 5.10E+09
327 55.3 0.52 2.55E+09 5.10E+09
328 55.1 0.53 2.59E+09 5.18E+09
329 55.0 0.53 2.59E+09 5.18E+09
330 54.9 0.53 2.59E+09 5.18E+09
331 54.7 0.54 2.63E+09 5.25E+09
332 54.6 0.54 2.63E+09 5.25E+09
333 54.4 0.54 2.66E+09 5.33E+09
334 54.3 0.56 2.74E+09 5.48E+09
335 54.2 0.56 2.74E+09 5.48E+09
336 54.0 0.56 2.74E+09 5.48E+09
337 53.9 0.57 2.78E+09 5.56E+09
338 53.8 0.58 2.82E+09 5.63E+09
339 53.6 0.58 2.82E+09 5.63E+09
340 53.5 0.58 2.82E+09 5.63E+09
341 53.4 0.58 2.85E+09 5.71E+09
342 53.2 0.58 2.85E+09 5.71E+09
343 53.1 0.58 2.85E+09 5.71E+09
344 52.9 0.58 2.85E+09 5.71E+09
345 52.8 0.58 2.85E+09 5.71E+09
346 52.7 0.59 2.89E+09 5.78E+09
347 52.5 0.59 2.89E+09 5.78E+09
TMDL for Fecal Coliform Bacteria: McKee and Clear Creeks June 2003

73
348 52.4 0.60 2.93E+09 5.86E+09
349 52.3 0.60 2.93E+09 5.86E+09
350 52.1 0.61 2.97E+09 5.94E+09
351 52.0 0.61 3.01E+09 6.01E+09
352 51.8 0.61 3.01E+09 6.01E+09
353 51.7 0.61 3.01E+09 6.01E+09
354 51.6 0.61 3.01E+09 6.01E+09
355 51.4 0.61 3.01E+09 6.01E+09
356 51.3 0.62 3.04E+09 6.09E+09
357 51.2 0.63 3.08E+09 6.17E+09
358 51.0 0.64 3.12E+09 6.24E+09
359 50.9 0.64 3.12E+09 6.24E+09
360 50.8 0.64 3.12E+09 6.24E+09
361 50.6 0.64 3.12E+09 6.24E+09
362 50.5 0.65 3.16E+09 6.32E+09
363 50.3 0.65 3.16E+09 6.32E+09
364 50.2 0.65 3.16E+09 6.32E+09
365 50.1 0.65 3.16E+09 6.32E+09
366 49.9 0.65 3.16E+09 6.32E+09
367 49.8 0.65 3.16E+09 6.32E+09
368 49.7 0.65 3.16E+09 6.32E+09
369 49.5 0.65 3.20E+09 6.39E+09
370 49.4 0.65 3.20E+09 6.39E+09
371 49.2 0.65 3.20E+09 6.39E+09
372 49.1 0.65 3.20E+09 6.39E+09
373 49.0 0.65 3.20E+09 6.39E+09
374 48.8 0.66 3.23E+09 6.47E+09
375 48.7 0.66 3.23E+09 6.47E+09
376 48.6 0.66 3.23E+09 6.47E+09
377 48.4 0.67 3.27E+09 6.55E+09
378 48.3 0.67 3.27E+09 6.55E+09
379 48.2 0.67 3.27E+09 6.55E+09
380 48.0 0.67 3.27E+09 6.55E+09
381 47.9 0.68 3.31E+09 6.62E+09
382 47.7 0.68 3.31E+09 6.62E+09
383 47.6 0.68 3.35E+09 6.70E+09
384 47.5 0.68 3.35E+09 6.70E+09
385 47.3 0.68 3.35E+09 6.70E+09 2714 4.5448E+10
386 47.2 0.68 3.35E+09 6.70E+09
387 47.1 0.68 3.35E+09 6.70E+09
388 46.9 0.69 3.39E+09 6.77E+09
389 46.8 0.69 3.39E+09 6.77E+09
390 46.6 0.69 3.39E+09 6.77E+09
391 46.5 0.70 3.43E+09 6.85E+09
392 46.4 0.70 3.43E+09 6.85E+09
393 46.2 0.71 3.46E+09 6.93E+09
394 46.1 0.71 3.46E+09 6.93E+09
395 46.0 0.71 3.46E+09 6.93E+09
396 45.8 0.71 3.46E+09 6.93E+09
397 45.7 0.71 3.46E+09 6.93E+09
398 45.6 0.71 3.46E+09 6.93E+09
TMDL for Fecal Coliform Bacteria: McKee and Clear Creeks June 2003

74
399 45.4 0.72 3.50E+09 7.00E+09
400 45.3 0.72 3.50E+09 7.00E+09
401 45.1 0.72 3.54E+09 7.08E+09
402 45.0 0.72 3.54E+09 7.08E+09
403 44.9 0.72 3.54E+09 7.08E+09
404 44.7 0.73 3.58E+09 7.15E+09
405 44.6 0.73 3.58E+09 7.15E+09
406 44.5 0.73 3.58E+09 7.15E+09
407 44.3 0.73 3.58E+09 7.15E+09
408 44.2 0.74 3.62E+09 7.23E+09
409 44.0 0.74 3.62E+09 7.23E+09 1146 2.07E+10
410 43.9 0.74 3.62E+09 7.23E+09
411 43.8 0.75 3.65E+09 7.31E+09
412 43.6 0.75 3.65E+09 7.31E+09
413 43.5 0.75 3.65E+09 7.31E+09
414 43.4 0.75 3.69E+09 7.38E+09
415 43.2 0.75 3.69E+09 7.38E+09
416 43.1 0.75 3.69E+09 7.38E+09
417 43.0 0.75 3.69E+09 7.38E+09
418 42.8 0.76 3.73E+09 7.46E+09
419 42.7 0.76 3.73E+09 7.46E+09
420 42.5 0.76 3.73E+09 7.46E+09
421 42.4 0.76 3.73E+09 7.46E+09
422 42.3 0.78 3.81E+09 7.61E+09
423 42.1 0.78 3.81E+09 7.61E+09
424 42.0 0.78 3.81E+09 7.61E+09
425 41.9 0.78 3.81E+09 7.61E+09
426 41.7 0.78 3.81E+09 7.61E+09
427 41.6 0.78 3.81E+09 7.61E+09
428 41.5 0.78 3.81E+09 7.61E+09
429 41.3 0.78 3.81E+09 7.61E+09
430 41.2 0.78 3.81E+09 7.61E+09
431 41.0 0.78 3.81E+09 7.61E+09
432 40.9 0.78 3.81E+09 7.61E+09
433 40.8 0.78 3.81E+09 7.61E+09
434 40.6 0.78 3.81E+09 7.61E+09
435 40.5 0.78 3.81E+09 7.61E+09
436 40.4 0.78 3.81E+09 7.61E+09
437 40.2 0.78 3.81E+09 7.61E+09
438 40.1 0.78 3.81E+09 7.61E+09
439 39.9 0.78 3.81E+09 7.61E+09
440 39.8 0.78 3.81E+09 7.61E+09
441 39.7 0.86 4.19E+09 8.37E+09
442 39.5 0.86 4.19E+09 8.37E+09
443 39.4 0.86 4.19E+09 8.37E+09
444 39.3 0.86 4.19E+09 8.37E+09
445 39.1 0.86 4.19E+09 8.37E+09
446 39.0 0.86 4.19E+09 8.37E+09
447 38.9 0.86 4.19E+09 8.37E+09
448 38.7 0.86 4.19E+09 8.37E+09
449 38.6 0.86 4.19E+09 8.37E+09
TMDL for Fecal Coliform Bacteria: McKee and Clear Creeks June 2003

75
450 38.4 0.86 4.19E+09 8.37E+09
451 38.3 0.86 4.19E+09 8.37E+09
452 38.2 0.86 4.19E+09 8.37E+09
453 38.0 0.86 4.19E+09 8.37E+09
454 37.9 0.86 4.19E+09 8.37E+09
455 37.8 0.86 4.19E+09 8.37E+09
456 37.6 0.86 4.19E+09 8.37E+09
457 37.5 0.86 4.19E+09 8.37E+09
458 37.3 0.86 4.19E+09 8.37E+09
459 37.2 0.86 4.19E+09 8.37E+09
460 37.1 0.86 4.19E+09 8.37E+09
461 36.9 0.86 4.19E+09 8.37E+09
462 36.8 0.86 4.19E+09 8.37E+09
463 36.7 0.86 4.19E+09 8.37E+09
464 36.5 0.86 4.19E+09 8.37E+09
465 36.4 0.86 4.19E+09 8.37E+09
466 36.3 0.86 4.19E+09 8.37E+09
467 36.1 0.93 4.57E+09 9.13E+09
468 36.0 0.93 4.57E+09 9.13E+09
469 35.8 0.93 4.57E+09 9.13E+09
470 35.7 0.93 4.57E+09 9.13E+09
471 35.6 0.93 4.57E+09 9.13E+09
472 35.4 0.93 4.57E+09 9.13E+09
473 35.3 0.93 4.57E+09 9.13E+09
474 35.2 0.93 4.57E+09 9.13E+09
475 35.0 0.93 4.57E+09 9.13E+09
476 34.9 0.93 4.57E+09 9.13E+09 1 2.28E+07
477 34.7 0.93 4.57E+09 9.13E+09
478 34.6 0.93 4.57E+09 9.13E+09
479 34.5 0.93 4.57E+09 9.13E+09
480 34.3 0.93 4.57E+09 9.13E+09
481 34.2 0.93 4.57E+09 9.13E+09
482 34.1 0.93 4.57E+09 9.13E+09
483 33.9 0.93 4.57E+09 9.13E+09
484 33.8 0.93 4.57E+09 9.13E+09
485 33.7 0.93 4.57E+09 9.13E+09
486 33.5 1.01 4.95E+09 9.90E+09
487 33.4 1.01 4.95E+09 9.90E+09
488 33.2 1.01 4.95E+09 9.90E+09
489 33.1 1.01 4.95E+09 9.90E+09
490 33.0 1.01 4.95E+09 9.90E+09
491 32.8 1.01 4.95E+09 9.90E+09
492 32.7 1.01 4.95E+09 9.90E+09
493 32.6 1.01 4.95E+09 9.90E+09
494 32.4 1.01 4.95E+09 9.90E+09
495 32.3 1.01 4.95E+09 9.90E+09
496 32.1 1.01 4.95E+09 9.90E+09
497 32.0 1.01 4.95E+09 9.90E+09
498 31.9 1.01 4.95E+09 9.90E+09
499 31.7 1.01 4.95E+09 9.90E+09
500 31.6 1.09 5.33E+09 1.07E+10
TMDL for Fecal Coliform Bacteria: McKee and Clear Creeks June 2003

76
501 31.5 1.09 5.33E+09 1.07E+10
502 31.3 1.09 5.33E+09 1.07E+10
503 31.2 1.09 5.33E+09 1.07E+10
504 31.1 1.09 5.33E+09 1.07E+10
505 30.9 1.09 5.33E+09 1.07E+10 2378 6.3352E+10
506 30.8 1.09 5.33E+09 1.07E+10
507 30.6 1.09 5.33E+09 1.07E+10
508 30.5 1.09 5.33E+09 1.07E+10
509 30.4 1.09 5.33E+09 1.07E+10
510 30.2 1.09 5.33E+09 1.07E+10
511 30.1 1.17 5.71E+09 1.14E+10
512 30.0 1.17 5.71E+09 1.14E+10
513 29.8 1.17 5.71E+09 1.14E+10
514 29.7 1.17 5.71E+09 1.14E+10
515 29.5 1.17 5.71E+09 1.14E+10
516 29.4 1.17 5.71E+09 1.14E+10
517 29.3 1.17 5.71E+09 1.14E+10 88 2.51E+09
518 29.1 1.17 5.71E+09 1.14E+10
519 29.0 1.17 5.71E+09 1.14E+10
520 28.9 1.17 5.71E+09 1.14E+10
521 28.7 1.17 5.71E+09 1.14E+10
522 28.6 1.17 5.71E+09 1.14E+10
523 28.5 1.17 5.71E+09 1.14E+10
524 28.3 1.17 5.71E+09 1.14E+10
525 28.2 1.24 6.09E+09 1.22E+10
526 28.0 1.24 6.09E+09 1.22E+10
527 27.9 1.24 6.09E+09 1.22E+10
528 27.8 1.24 6.09E+09 1.22E+10
529 27.6 1.24 6.09E+09 1.22E+10
530 27.5 1.24 6.09E+09 1.22E+10
531 27.4 1.24 6.09E+09 1.22E+10
532 27.2 1.24 6.09E+09 1.22E+10
533 27.1 1.24 6.09E+09 1.22E+10
534 26.9 1.24 6.09E+09 1.22E+10
535 26.8 1.24 6.09E+09 1.22E+10
536 26.7 1.24 6.09E+09 1.22E+10
537 26.5 1.32 6.47E+09 1.29E+10
538 26.4 1.32 6.47E+09 1.29E+10
539 26.3 1.32 6.47E+09 1.29E+10
540 26.1 1.32 6.47E+09 1.29E+10
541 26.0 1.32 6.47E+09 1.29E+10
542 25.9 1.32 6.47E+09 1.29E+10
543 25.7 1.32 6.47E+09 1.29E+10
544 25.6 1.32 6.47E+09 1.29E+10
545 25.4 1.32 6.47E+09 1.29E+10
546 25.3 1.32 6.47E+09 1.29E+10
547 25.2 1.32 6.47E+09 1.29E+10
548 25.0 1.32 6.47E+09 1.29E+10
549 24.9 1.32 6.47E+09 1.29E+10
550 24.8 1.32 6.47E+09 1.29E+10
551 24.6 1.32 6.47E+09 1.29E+10
TMDL for Fecal Coliform Bacteria: McKee and Clear Creeks June 2003

77
552 24.5 1.32 6.47E+09 1.29E+10
553 24.4 1.40 6.85E+09 1.37E+10
554 24.2 1.40 6.85E+09 1.37E+10
555 24.1 1.40 6.85E+09 1.37E+10
556 23.9 1.40 6.85E+09 1.37E+10
557 23.8 1.40 6.85E+09 1.37E+10
558 23.7 1.40 6.85E+09 1.37E+10 737 2.52E+10
559 23.5 1.40 6.85E+09 1.37E+10
560 23.4 1.40 6.85E+09 1.37E+10
561 23.3 1.40 6.85E+09 1.37E+10
562 23.1 1.40 6.85E+09 1.37E+10
563 23.0 1.40 6.85E+09 1.37E+10
564 22.8 1.48 7.23E+09 1.45E+10
565 22.7 1.48 7.23E+09 1.45E+10
566 22.6 1.48 7.23E+09 1.45E+10
567 22.4 1.48 7.23E+09 1.45E+10
568 22.3 1.48 7.23E+09 1.45E+10
569 22.2 1.48 7.23E+09 1.45E+10
570 22.0 1.48 7.23E+09 1.45E+10
571 21.9 1.56 7.61E+09 1.52E+10
572 21.8 1.56 7.61E+09 1.52E+10
573 21.6 1.56 7.61E+09 1.52E+10
574 21.5 1.56 7.61E+09 1.52E+10
575 21.3 1.56 7.61E+09 1.52E+10
576 21.2 1.56 7.61E+09 1.52E+10
577 21.1 1.56 7.61E+09 1.52E+10
578 20.9 1.56 7.61E+09 1.52E+10
579 20.8 1.56 7.61E+09 1.52E+10
580 20.7 1.56 7.61E+09 1.52E+10
581 20.5 1.56 7.61E+09 1.52E+10
582 20.4 1.56 7.61E+09 1.52E+10
583 20.2 1.56 7.61E+09 1.52E+10
584 20.1 1.56 7.61E+09 1.52E+10
585 20.0 1.63 7.99E+09 1.60E+10
586 19.8 1.63 7.99E+09 1.60E+10
587 19.7 1.63 7.99E+09 1.60E+10
588 19.6 1.63 7.99E+09 1.60E+10
589 19.4 1.63 7.99E+09 1.60E+10 658 2.6295E+10
590 19.3 1.63 7.99E+09 1.60E+10
591 19.2 1.63 7.99E+09 1.60E+10
592 19.0 1.63 7.99E+09 1.60E+10
593 18.9 1.63 7.99E+09 1.60E+10
594 18.7 1.71 8.37E+09 1.67E+10
595 18.6 1.71 8.37E+09 1.67E+10
596 18.5 1.71 8.37E+09 1.67E+10
597 18.3 1.71 8.37E+09 1.67E+10
598 18.2 1.71 8.37E+09 1.67E+10
599 18.1 1.71 8.37E+09 1.67E+10
600 17.9 1.71 8.37E+09 1.67E+10
601 17.8 1.71 8.37E+09 1.67E+10
602 17.6 1.71 8.37E+09 1.67E+10
TMDL for Fecal Coliform Bacteria: McKee and Clear Creeks June 2003

78
603 17.5 1.79 8.75E+09 1.75E+10
604 17.4 1.79 8.75E+09 1.75E+10
605 17.2 1.79 8.75E+09 1.75E+10
606 17.1 1.79 8.75E+09 1.75E+10
607 17.0 1.79 8.75E+09 1.75E+10
608 16.8 1.87 9.13E+09 1.83E+10
609 16.7 1.87 9.13E+09 1.83E+10
610 16.6 1.87 9.13E+09 1.83E+10
611 16.4 1.87 9.13E+09 1.83E+10
612 16.3 1.94 9.51E+09 1.90E+10
613 16.1 1.94 9.51E+09 1.90E+10
614 16.0 1.94 9.51E+09 1.90E+10
615 15.9 1.94 9.51E+09 1.90E+10
616 15.7 1.94 9.51E+09 1.90E+10
617 15.6 1.94 9.51E+09 1.90E+10
618 15.5 1.94 9.51E+09 1.90E+10
619 15.3 2.02 9.90E+09 1.98E+10
620 15.2 2.02 9.90E+09 1.98E+10
621 15.0 2.02 9.90E+09 1.98E+10
622 14.9 2.10 1.03E+10 2.06E+10
623 14.8 2.10 1.03E+10 2.06E+10
624 14.6 2.10 1.03E+10 2.06E+10
625 14.5 2.10 1.03E+10 2.06E+10
626 14.4 2.18 1.07E+10 2.13E+10
627 14.2 2.18 1.07E+10 2.13E+10
628 14.1 2.18 1.07E+10 2.13E+10
629 14.0 2.18 1.07E+10 2.13E+10
630 13.8 2.18 1.07E+10 2.13E+10
631 13.7 2.26 1.10E+10 2.21E+10
632 13.5 2.26 1.10E+10 2.21E+10
633 13.4 2.26 1.10E+10 2.21E+10
634 13.3 2.26 1.10E+10 2.21E+10
635 13.1 2.26 1.10E+10 2.21E+10
636 13.0 2.33 1.14E+10 2.28E+10
637 12.9 2.33 1.14E+10 2.28E+10
638 12.7 2.33 1.14E+10 2.28E+10
639 12.6 2.33 1.14E+10 2.28E+10
640 12.4 2.41 1.18E+10 2.36E+10
641 12.3 2.41 1.18E+10 2.36E+10
642 12.2 2.49 1.22E+10 2.44E+10
643 12.0 2.49 1.22E+10 2.44E+10
644 11.9 2.57 1.26E+10 2.51E+10
645 11.8 2.64 1.29E+10 2.59E+10
646 11.6 2.64 1.29E+10 2.59E+10
647 11.5 2.64 1.29E+10 2.59E+10
648 11.4 2.64 1.29E+10 2.59E+10
649 11.2 2.64 1.29E+10 2.59E+10
650 11.1 2.72 1.33E+10 2.66E+10
651 10.9 2.72 1.33E+10 2.66E+10
652 10.8 2.72 1.33E+10 2.66E+10
653 10.7 2.80 1.37E+10 2.74E+10
TMDL for Fecal Coliform Bacteria: McKee and Clear Creeks June 2003

79
654 10.5 2.88 1.41E+10 2.82E+10
655 10.4 2.88 1.41E+10 2.82E+10
656 10.3 2.88 1.41E+10 2.82E+10
657 10.1 2.88 1.41E+10 2.82E+10
658 10.0 2.88 1.41E+10 2.82E+10
659 9.8 3.03 1.48E+10 2.97E+10
660 9.7 3.11 1.52E+10 3.04E+10
661 9.6 3.19 1.56E+10 3.12E+10
662 9.4 3.19 1.56E+10 3.12E+10
663 9.3 3.34 1.64E+10 3.27E+10
664 9.2 3.42 1.67E+10 3.35E+10
665 9.0 3.42 1.67E+10 3.35E+10
666 8.9 3.42 1.67E+10 3.35E+10
667 8.8 3.50 1.71E+10 3.43E+10
668 8.6 3.66 1.79E+10 3.58E+10
669 8.5 3.66 1.79E+10 3.58E+10
670 8.3 3.66 1.79E+10 3.58E+10
671 8.2 3.66 1.79E+10 3.58E+10
672 8.1 3.73 1.83E+10 3.65E+10
673 7.9 3.81 1.86E+10 3.73E+10
674 7.8 3.81 1.86E+10 3.73E+10
675 7.7 3.81 1.86E+10 3.73E+10
676 7.5 4.12 2.02E+10 4.03E+10
677 7.4 4.28 2.09E+10 4.19E+10
678 7.3 4.28 2.09E+10 4.19E+10
679 7.1 4.36 2.13E+10 4.26E+10
680 7.0 4.43 2.17E+10 4.34E+10
681 6.8 4.43 2.17E+10 4.34E+10
682 6.7 4.43 2.17E+10 4.34E+10
683 6.6 4.67 2.28E+10 4.57E+10
684 6.4 4.67 2.28E+10 4.57E+10
685 6.3 4.82 2.36E+10 4.72E+10
686 6.2 4.82 2.36E+10 4.72E+10
687 6.0 4.90 2.40E+10 4.80E+10
688 5.9 5.21 2.55E+10 5.10E+10
689 5.7 5.44 2.66E+10 5.33E+10
690 5.6 5.76 2.82E+10 5.63E+10
691 5.5 6.22 3.04E+10 6.09E+10
692 5.3 6.30 3.08E+10 6.17E+10
693 5.2 6.38 3.12E+10 6.24E+10
694 5.1 6.38 3.12E+10 6.24E+10
695 4.9 6.45 3.16E+10 6.32E+10
696 4.8 6.92 3.39E+10 6.77E+10
697 4.7 7.31 3.58E+10 7.15E+10
698 4.5 7.39 3.62E+10 7.23E+10
699 4.4 7.62 3.73E+10 7.46E+10
700 4.2 7.78 3.81E+10 7.61E+10
701 4.1 7.78 3.81E+10 7.61E+10 2094 3.98E+11
702 4.0 8.55 4.19E+10 8.37E+10
703 3.8 9.33 4.57E+10 9.13E+10
704 3.7 9.33 4.57E+10 9.13E+10
TMDL for Fecal Coliform Bacteria: McKee and Clear Creeks June 2003

80
705 3.6 10.89 5.33E+10 1.07E+11
706 3.4 10.89 5.33E+10 1.07E+11
707 3.3 10.89 5.33E+10 1.07E+11
708 3.1 10.89 5.33E+10 1.07E+11
709 3.0 10.89 5.33E+10 1.07E+11
710 2.9 11.67 5.71E+10 1.14E+11
711 2.7 11.67 5.71E+10 1.14E+11
712 2.6 14.00 6.85E+10 1.37E+11
713 2.5 14.00 6.85E+10 1.37E+11
714 2.3 14.78 7.23E+10 1.45E+11
715 2.2 14.78 7.23E+10 1.45E+11
716 2.1 15.55 7.61E+10 1.52E+11
717 1.9 18.66 9.13E+10 1.83E+11
718 1.8 18.66 9.13E+10 1.83E+11
719 1.6 18.66 9.13E+10 1.83E+11
720 1.5 19.44 9.51E+10 1.90E+11
721 1.4 21.00 1.03E+11 2.06E+11
722 1.2 21.00 1.03E+11 2.06E+11
723 1.1 23.33 1.14E+11 2.28E+11
724 1.0 23.33 1.14E+11 2.28E+11
725 0.8 23.33 1.14E+11 2.28E+11
726 0.7 26.44 1.29E+11 2.59E+11
727 0.5 31.89 1.56E+11 3.12E+11
728 0.4 50.55 2.47E+11 4.95E+11
729 0.3 53.66 2.63E+11 5.25E+11
730 0.1 70.77 3.46E+11 6.93E+11
731 0.0 73.10 3.58E+11 7.15E+11

TMDL for Fecal Coliform Bacteria: McKee and Clear Creeks June 2003

81
APPENDIX G: PUBLIC NOTICE OF DRAFT McKEE AND CLEAR CREEK TMDL

TMDL for Fecal Coliform Bacteria: McKee and Clear Creeks June 2003

82

TMDL for Fecal Coliform Bacteria: McKee and Clear Creeks June 2003

83

TMDL for Fecal Coliform Bacteria: McKee and Clear Creeks June 2003

84

TMDL for Fecal Coliform Bacteria: McKee and Clear Creeks June 2003

85

TMDL for Fecal Coliform Bacteria: McKee and Clear Creeks June 2003

86
TMDL for Fecal Coliform Bacteria: McKee and Clear Creeks June 2003

87

End of Document