RockyRiverFecalTMDL final

Final Total Maximum Daily Load (TMDL)
for Fecal Coliform
August 2002
(Approved September, 2002)
Rocky River (Subbasin 03-07-11)
Yadkin-Pee Dee River Basin
North Carolina
Prepared by:
NC Department of Environment and Natural Resources
Division of Water Quality
Water Quality Section
1617 Mail Service Center
Raleigh, NC 27699-1617
[phone]
Final Fecal Coliform TMDL for Rocky River
ii
INDEX OF TMDL SUBMITTAL
303(d) List Information
State North Carolina
Basin Yadkin-Pee Dee River Basin
303(d) Listed Waters
Name of Stream Description Class Index #8 Digit CU Miles
Rocky River From source to SR2420 in Mecklenburg County C 13-17a 03040105 9.2
8 Digit Cataloging Unit(s) 03040105
Area of Impairment 9.2 miles
WQS Violated Fecal Coliform
Pollutant of Concern Fecal Coliform
Sources of Impairment Point and nonpoint sources from entire
watershed
Public Notice Information
Form of Public Notification: A draft of the Rocky River Fecal Coliform TMDL was publically noticed
through various means, including notification in a local newspaper. A public comment period was held for
the 30 days prior to May 24, 2002. A public meeting was held in Mooresville on May 8, 2002.
Did notification contain specific mention of TMDL proposal? Yes
Were comments received from the public? Yes
Was a responsiveness summary prepared? A summary of the comments and DWQ’s responses
are included in Appendix VII of the TMDL document
Final Fecal Coliform TMDL for Rocky River
TMDL Information
Critical condition wet weather, late winter-early spring
Seasonality Modeled from 1996- May 2001 to include fluctuations in seasonal
fecal coliform loading.
Development tools Coliform Routing and Allocation Program (CRAP)
Supporting documents “Final Total Maximum Daily Load for Fecal Coliform, Rocky
River”
TMDL(s)
Loading allowed at critical condition:
Wasteload Allocation (WLA): 1.18 x 1012 cfu per 30 days
Load Allocation (LA): 1.09 x 1013 cfu per 30 days
Total Maximum Daily
Load (TMDL)
Sources Sub-
Watershed
Wet
Weather
Fecal
Coliform
Loading
Reductions
Dry Weather
Fecal
Coliform
Loading
Reductions
Wasteload
Allocation (WLA)
WWTP WS03 0% 0%
High Density Development WS01-WS03;
WS05
91% 33%
Low Density Development WS01-WS03 91% 33%
Livestock Grazing/Manure
Application (Pastureland)
WS04-WS07 86% 20%
Manure Application (Cultivated) WS04-WS07 86% 20%
Wildlife WS01-WS07 0% 0%
Margin of Safety Explicit margin of safety of 25 cfu/100ml.
Final Fecal Coliform TMDL for Rocky River
TABLE OF CONTENTS
1.0 INTRODUCTION………………………………………………………………. 1
1.1 Watershed Description………………………………………………….. 2
1.2 Water Quality Monitoring Program…………………………………….. 5
1.3 Water Quality Target……………………………………………………. 9
2.0 SOURCE ASSESSMENT………………………………………………………. 10
2.1 Point Source Assessment……………………………………………….. 10
2.2 Non-point Source Assessment……………………………………………11
3.0 MODELING APPROACH………………………………………………………14
3.1 Model Framework………………………………………………………. 14
3.2 Model Setup…………………………………………………………….. 14
3.3 Fecal Coliform Source Representation…………………………………. 18
3.4 Instream Decay Rate……………………………………………………. 23
3.5 Uncertainty………………………………………………………………24
3.6 Critical Conditions………………………………………………………25
3.7 Model Results…………………………………………………………... 25
4.0 ALLOCATION………………………………………………………………….. 29
4.1 Total Maximum Daily Load (TMDL)…………………………………... 29
4.2 Seasonal Variation………………………………………………………. 29
4.3 Margin of Safety………………………………………………………… 29
4.4 Load Reductions…………………………………………………………33
5.0 SUMMARY AND FUTURE CONSIDERATIONS……………………………33
5.1 Monitoring………………………………………………………………. 34
5.2 Implementation………………………………………………………….. 34
6.0 PUBLIC PARTICIPATION……………………………………………………34
7.0 REFERENCES…………………………………………………………………. 36
Appendix I. Mooresville WWTP (NC4672800) Discharge Monitoring Data
Appendix II. NC Division of Water Quality AMS Q7330000 Station Fecal Coliform Data
Appendix III. Yadkin-Pee Dee River Basin Association Monitoring Station Q7330000 Fecal
Coliform Data
Appendix IV. Mooresville WWTP Upstream/Downstream Fecal Coliform Data 1996-June 1998
Appendix V. NC Division of Water Quality Intensive Study of Fecal Coliform Concentrations
Appendix VI. Public Notification of Public Review Draft of Rocky River Fecal Coliform
TMDL.
Appendix VII. Public Comments and Responsiveness Summary to Public Review Draft of
Rocky River Fecal Coliform TMDL
Final Fecal Coliform TMDL for Rocky River
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1.0 INTRODUCTION
The North Carolina Division of Water Quality (DWQ) has identified a 9.2 mile segment (13-
17a) of Rocky River in the Yadkin River Basin as impaired by fecal coliform bacteria as reported
in the 2000 North Carolina 303(d) list. The impaired segment is located between its source and
SR2420 in Mecklenburg County (Davidson Road). This section of the stream, located in
subbasin 03-07-11, is designated as a class C water.1
Section 303(d) of the Clean Water Act (CWA) requires states to develop a list of waters not
meeting water quality standards or which have impaired uses. This list, referred to as the 303(d)
list, is submitted biennially to the U.S. Environmental Protection Agency (EPA) for review.
The 303(d) process requires that a Total Maximum Daily Load (TMDL) be developed for each
of the waters appearing on Part I of the 303(d) list. The objective of a TMDL is to estimate
allowable pollutant loads and allocate to known sources so that actions may be taken to restore
the water to its intended uses (USEPA, 1991). Generally, the primary components of a TMDL
as identified by EPA (1991, 2000a) 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 sources that contribute to the impairment should be 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.

1 Class C waters are freshwaters that are protected for secondary recreation, fishing, aquatic life including
propagation and survival of wildlife.
Final Fecal Coliform TMDL for Rocky River
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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. Similarly, the load allocation portion
of the TMDL accounts for the loads associated with existing and future non-point
sources, stormwater, and natural background.
Margin of Safety. The margin of safety addresses uncertainties associated with pollutant loads,
modeling techniques, and data collection. Per EPA (2000a), 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).
Section 303(d) of the CWA and the Water Quality Planning and Management regulation
(USEPA, 2000a) require EPA to review all TMDLs for approval or disapproval. Once EPA
approves a TMDL, then the waterbody may be moved to Part III of the 303(d) list. Waterbodies
remain on Part III of the list until compliance with water quality standards is achieved. Where
conditions are not appropriate for the development of a TMDL, management strategies may still
result in the restoration of water quality.
The goal of the TMDL program is to restore uses to water bodies. Thus, the implementation of
bacteria controls will be necessary to restore uses in Rocky River. Although an implementation
plan is not included as part of this TMDL, reduction strategies are needed. The involvement of
local governments and agencies will be critical in order to develop implementation plans and
reduction strategies. The DWQ will begin developing the implementation plan during public
review of the TMDL.
1.1 Watershed Description
Rocky River, located in the central piedmont region of North Carolina, drains to the Yadkin-Pee
Dee River Basin. Figure 1 depicts the location of the fecal coliform impaired segment of the
Rocky River in North Carolina. Rocky River flows generally eastward from its source, just east
Final Fecal Coliform TMDL for Rocky River
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of Mooresville, to the Pee Dee River for a distance of 86 miles. The Rocky River watershed in
the TMDL includes the drainage area above the confluence of the West Branch Rocky River and
Rocky River. The major tributary of Rocky River in the watershed is Dye Creek. The Rocky
River watershed is divided between Iredell, Mecklenburg and Cabarrus counties. The fecal
coliform impaired portion of the Rocky River spans from the source of the River to SR2420 in
Mecklenburg County (Davidson Road). The majority of the impaired stream segment is located
in Iredell County. The Rocky River watershed is located within one 14 digit hydrologic unit
(HUC 03040105010010) and is approximately 14 square miles in area. The portion of the
watershed that lies in Iredell County has an area of 10.6 mi2. The remaining portion of the
watershed falls in Cabarrus County (2.3 mi2 ) and Mecklenburg County (1.3 mi2 ). A portion of
the town of Mooresville (2000 population of 18,823) is located in the upper portion of the Rocky
River watershed. The town of Mooresville has witnessed a population growth of approximately
100% over the past decade (CCOG, 2001).
The land use/ land cover characteristics of the watershed were determined using 1996 land cover
data. The North Carolina Center for Geographic Information and Analysis, in cooperation with
the NC Department of Transportation and United States Environmental Protection Agency
Region IV Wetlands Division, contracted Earth Satellite Corporation (EarthSat) of Rockville,
Maryland to generate comprehensive land cover data for the entire state of North Carolina. Land
cover/land use coverage for the watershed above the confluence of Rocky River and West
Branch Rocky River is shown in Table 1.
Land Cover/Land Use Rocky River Watershed Acres (%)
Cultivated 210 (2.3%)
High Intensity Developed 197 (2.2%)
Low Intensity Developed 357 (4.0%)
Forest/Shrubland 5,602 (62.1%)
Herbaceous Cover 2,638 (29.2%)
Open Water 15 (0.17%)
Total 9,018
Table 1. The land cover/land use coverage of the Rocky River watershed.
Final Fecal Coliform TMDL for Rocky River
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Figure 1. The Fecal Coliform Impaired Segment of the Rocky River.
Final Fecal Coliform TMDL for Rocky River
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1.2 Water Quality Monitoring Program
The segment of Rocky River was listed as impaired based on data from an ambient monitoring
station located at SR 2420 in Mecklenburg County (Davidson Road) (Station Q733000). Figure
2 shows the locations of the monitoring stations in the Rocky River watershed. The fecal
coliform samples were collected on a monthly interval. A Yadkin-Pee Dee River Basin
Association discharger coalition monitoring station is also sited at this location (Station
Q733000). The discharger coalition has been monitoring fecal coliform concentrations at this
location since July of 1998. The data from these monitoring stations are shown in Appendix I.
The Mooresville WWTP monitored instream fecal coliform concentrations at one upstream and
two downstream locations in years prior to the discharger coalition monitoring. The upstream
station was sited above the outfall of the WWTP on Dye Creek and the two downstream stations
were located at SR2420 and SR1394. The upstream/downstream fecal coliform concentration
data are shown in Appendix II.
The fecal coliform concentrations of the samples collected at the DWQ ambient monitoring
station ranged from 10cfu/100ml to 13,000cfu/100ml (cfu=colony forming units). The fecal
coliform concentrations for the samples collected by the discharger coalition at station Q733000
ranged between 42 and 6,000 cfu/100ml between July 1998 and April 2001. Samples are
collected at the DWQ ambient monitoring station and at the discharger coalition station on a
monthly basis. The DWQ ambient data are shown in Figure 6. As a result, since June of 1998,
the 30-day geometric mean of the samples could not be calculated using the minimum required 5
samples in 30 days. Prior to 1998, 30-day geometric means can be calculated using the instream
monitoring by the Mooresville WWTP. The rolling 30-day geometric means for 1996, 1997 and
1998 are shown in Figures 2 through 5. The discharger coalition data at station Q7330000 are
shown in Figure 7.
An intensive study of fecal coliform levels in Rocky River and Dye branch was conducted by
DWQ for eight weeks from April-May in 2001 at four locations in the watershed. The samples
were collected at the ambient station (Q7330000), Dye Branch at SR1142, Rocky River at SR
1142 in Iredell County, and Rocky River at NC136. The data from the study is shown in Figure
8.
Final Fecal Coliform TMDL for Rocky River
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1996 Mooresville WWTP Upstream/Downstream Sampling 30-Day Geometric
Mean of Fecal Coliform Concentrations (cfu/100ml)
1
10
100
1000
10000
1/6/96 2/25/96 4/15/96 6/4/96 7/24/96 9/12/96 11/1/96 12/21/96
Date
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Upstream Geometric Mean
Downstream Geometric Mean
Figure 2. 1996 Mooresville WWTP Upstream/Downstream Sampling (SR2420) 30-Day Rolling Geometric Mean
of Fecal Coliform Concentrations.
1997 Mooresville WWTP Upstream/Downstream Sampling
30-Day Geometric Mean of Fecal Coliform Conncentrations (cfu/100ml)
10
100
1000
10000
1/20/97 3/11/97 4/30/97 6/19/97 8/8/97 9/27/97 11/16/97 1/5/98
Date
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Upstream Geometric Mean
Downstream Geometric Mean
Figure 3. 1997 Mooresville WWTP Upstream/Downstream Sampling (SR2420) 30-Day Rolling Geometric Mean
of Fecal Coliform Concentrations.
Final Fecal Coliform TMDL for Rocky River
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1998 Mooresville WWTP Upstream/Downstream WWTP Sampling
30-Day Geometric Mean Fecal Coliform Concentration (cfu/100ml)
0
100
200
300
400
500
600
700
800
1/25/98 2/14/98 3/6/98 3/26/98 4/15/98 5/5/98 5/25/98 6/14/98
Date
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Upstream Geometric
Mean
Downstream Geometric
Mean
Figure 4. 1998 Mooresville WWTP Upstream/Downstream Sampling (SR2420) 30-Day Rolling Geometric Mean
of Fecal Coliform Concentrations.
Intensive Fecal Coliform Study in Rocky River and Dye Branch
April-May 2001 Fecal Coliform Concentration (cfu/100ml)
1
10
100
1000
10000
3/30/01 4/9/01 4/19/01 4/29/01 5/9/01 5/19/01 5/29/01 6/8/01
Date
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Dye-1
RR-1
RR-2
Q733
Figure 5. 2001 DWQ Intensive Fecal Coliform Study: Measured Fecal Coliform Concentrations on Dye Creek
(SR1142), Rocky River at NC136 (RR-1), Rocky River at SR1142 (RR-2) and Rocky River at SR2420 (Q733
Final Fecal Coliform TMDL for Rocky River
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Fecal Coliform Concentration Data at Ambient Monitoring
Station Q7330000 (SR2420)
1
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100000
January-95 May-96 September-97 February-99 June-00
Date
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Figure 6. North Carolina Division of Water Quality Ambient Monitoring Station Fecal Coliform Concentration Data at Station Q7330000 (SR2420).
Final Fecal Coliform TMDL for Rocky River
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Yadkin-Pee Dee River Basin Association Discharger Coalition Monitoring
Station Q7330000 Fecal Coliform Concentration
1
10
100
1000
10000
1/5/98 7/24/98 2/9/99 8/28/99 3/15/00 10/1/00 4/19/01 11/5/01 5/24/02
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Figure 7. Yadkin-Pee Dee River Basin Association Discharger Coalition Monitoring Station
Q7330000 Fecal Coliform Concentrations.
1.3 Water Quality Target
The North Carolina fresh water quality standard for Class C waters for fecal coliform (T15A:
02B.0211) 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, nor exceed
400/100 ml in more than 20 percent of the samples examined during such
period; violations of the fecal coliform standard are expected during
rainfall events and, in some cases, this violation is expected to be caused
by uncontrollable non-point 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.
The instream numeric target, or endpoint, is the restoration objective expected to be reached by
implementing the specified load reductions in the TMDL. The target allows for the evaluation of
progress towards the goal of reaching water quality standards for the impaired stream by
Final Fecal Coliform TMDL for Rocky River
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comparing the instream data to the target. In the Rocky River watershed, the water quality target
is the geometric mean concentration of 200cfu/100ml over a 30-day period. The water quality
target is based on the 30 day geometric mean standard of 200cfu/100ml. The water quality target
also evaluates for no greater than 20% of the instantaneous samples to exceed 400cfu/100ml.
In order to evaluate the fecal coliform model, monitor water quality conditions and assess
progress of the TMDL, an evaluation location was established for the Rocky River watershed.
The evaluation location of this watershed is located in Rocky River at SR2420, the location of
the ambient monitoring and discharger coalition stations, and the bottom point of the fecal
coliform impaired segment.
2.0 SOURCE ASSESSMENT
A source assessment is used to identify and characterize the known and suspected sources of
fecal coliform bacteria in the watershed. The source assessment of Rocky River will be used in
the water quality model and in the development of the TMDL.
2.1 Point Source Assessment
General sources of fecal coliform bacteria are divided between point and non-point sources.
Facilities that treat domestic waste which are permitted through the National Pollutant Discharge
Elimination System (NPDES) are the primary point sources of fecal coliform bacteria.
2.1.1 Individually Permitted NPDES Dischargers
There is one NPDES individually permitted discharger in the Rocky River watershed. The
Mooresville WWTP (NC0046728) has a maximum permitted effluent fecal coliform
concentration of a 30 day geometric mean of 200 cfu/100ml, and a weekly geometric mean of
400 cfu/100ml. The fecal coliform concentrations of the discharge are listed in Appendix II. The
Mooresville WWTP land applies a percentage of the residuals generated during the wastewater
treatment process. The source assessment for the land application of residuals is outlined below
in the land application section.
Final Fecal Coliform TMDL for Rocky River
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NDPES # Facility Name Facility Class Permitted Flow Receiving Water
NC0046728 Mooresville
WWTP
IV 5.2 MGD Dye Creek
Table 2. Individually permitted NPDES wastewater treatment facility in the Rocky River
Watershed.
2.1.2 General Permitted NPDES Dischargers
There is one general permitted facility located in the Rocky River watershed. The facility is
permitted to discharge non-contact cooling water, boiler blowdown, cooling tower blowdown,
and other similar wastewaters. The effluents of these facilities are not limited or monitored for
fecal coliform.
2.2 Non-point Source Assessment
Non-point sources of fecal coliform bacteria include those sources that can not be identified as
entering the waterbody at a specific location (e.g., a pipe). Non-point source pollution can
include both urban and agricultural sources, and human and non-human sources. Table 3 lists the
potential human and animal non-point sources of fecal coliform bacteria (Center for Watershed
Protection, 1999). The non-point sources of fecal coliform bacteria in the Rocky River
Source Type Source
Human Sources Sewered watershed Combined sewer overflows
Sanitary sewer overflows
Illegal sanitary connections to
storm drains
Illegal disposal to storm drains
Non-sewered watershed Failing septic systems
Poorly operated package plant
Landfills
Marinas
Non-human Sources Domestic animals and urban
wildlife
Dogs, cats
Rats, raccoons
Pigeons, gulls, ducks, geese
Livestock and rural wildlife Cattle, horse, poultry
Beaver, muskrats, deer,
waterfowl
Hobby farms
Table 3. Potential sources of fecal coliform bacteria in urban and rural watersheds (Center for
Watershed Protection, 1999).
Final Fecal Coliform TMDL for Rocky River
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watershed include wildlife, livestock (land application of agricultural manure and grazing), land
application of residuals from WWTP, urban development (stormwater), failing septic systems,
and sewer line systems (illicit connections, leaky sewer lines and sewer system overflows).
2.2.1 Livestock
The Rocky River watershed is divided between three counties: Mecklenburg, Cabarrus and
Iredell. There are no permitted concentrated animal feedlot operations (CAFOs) in the
watershed. There are, however, several small livestock and horse farms in the lower portion of
the Rocky River Watershed. The small operations are generally located in the lower portion of
the watershed, south of the city limits of Mooresville. The small animal farms include horses,
beef cattle, brood cattle and sheep (Testerman communications, 2001).
2.2.1.1 Livestock Grazing/Horse and Pony Grazing
Cattle, including both dairy and beef cows, and horses graze on pasture land and deposit feces
onto the land. During a rainfall runoff event, a portion of the fecal material that contains
coliform bacteria is transported to the streams. In addition, when cattle have direct access to
streams, feces may be deposited directly into a stream. There are small, scattered cattle
operations and horse stables which may have access to streams in the Rocky River Watershed.
2.2.1.2 Agricultural Manure Application/Residual Application from the Mooresville WWTP.
The town of Mooresville is permitted to land apply residuals from its wastewater treatment
process (Permit Number WQ0014136). There are 51 total application fields in the permit. Some
of these fields are located within the Rocky River watershed. In 1998, ten of these fields were
utilized for land application with a total acreage of 167.6 acres. The total amount of dry tons
applied during the year for all application sites was 155.7. Permit Number WQ0014136 was
reissued on January 8, 2001 for the land application of sludge generated by the Town of
Mooresville WWTP.
Final Fecal Coliform TMDL for Rocky River
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2.2.2 Failed Septic Systems
Failing septic systems have been cited as a potential source of fecal coliform bacteria to water
bodies (USEPA, 2000). The developed areas outside of the city of Mooresville are typically on
on-site waste-water systems. Specific data on the malfunction rate of septic systems in the
watershed were unavailable. A study conducted in 1981 by the North Carolina Office of State
Budget and Management suggested that approximately 11% of systems that were surveyed
experienced malfunctions or failures over a year (DEH, 2000).
2.2.3 Urban Development/Sanitary Sewer Overflows
Fecal coliform bacteria can originate from various urban sources. These sources include pet
waste, runoff through stormwater sewers, illicit discharges/connections of sanitary waste, leaky
sewer systems and sewer systems overflows. Several sanitary sewer overflows in city of
Mooresville have been reported from 1998-2000. In 1998, the town of Mooresville reported six
sanitary sewer overflows. The estimated volume of these spills ranged from 50 to 2,000 gallons.
All of these spills were treated with chlorination. In 1999, the town of Mooresville reported six
sanitary sewer overflows and thirteen pump station overflows. The sanitary sewer overflows in
1999 ranged in volume between 1,000 and 25,000 gallons. Four of the sanitary sewer overflows
were treated with chlorination in 1999. In 1999, the pump station overflows varied in volume
from 100 to 23,000 gallons. Nine of the thirteen pump station overflows in 1999 were treated
with chlorination. In 2000, six sanitary sewer overflows were reported by the town of
Mooresville. These spills ranged in volume from 200 to 900 gallons. Mooresville also reported
four pump station spills in 2000 with volumes between 200 and 84,000 gallons. All of the pump
station and sanitary sewer overflows that reached surface waters were treated with chlorination.
All of these spills listed above were reported to DWQ by the town of Mooresville. However, all
of the spills may not have occurred in the Rocky River watershed, as the Rocky River watershed
includes only a portion of the town of Mooresville.
2.4 Wildlife
Wildlife can be a source of fecal coliform bacteria in forested, wetland, pasture and cropland
areas. Wildlife deposit fecal material in these areas which can be transported to a stream in a
Final Fecal Coliform TMDL for Rocky River
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rain event. Wildlife in the Iredell, Cabarrus and Mecklenburg county area include deer,
raccoons, squirrels, and birds (including waterfowl).
3.0 MODELING APPROACH
3.1 Model Framework
The Coliform Routing and Allocation Program (CRAP), a geographic information system (GIS)
based tool (ArcView), was selected for the Rocky River fecal coliform bacteria TMDL
evaluation in order to satisfy a variety of modeling objectives. CRAP is designed to be an easy to
use GIS based model for fecal coliform TMDL development. In 1998 the Modeling Unit staff
reviewed the available tools potentially suitable for use in fecal coliform TMDLs and determined
that most of the models examined tended to be either overly complex for the modeling objectives
or too simple and inflexible. With the notable exception of a few major urban areas, most fecal
impaired streams are located in watersheds where relatively little information is available on
sources and stream/watershed morphology. Monthly instream fecal concentration data, collected
at DWQ ambient stations, tends to comprise the bulk of the available data on fecal coliform
bacteria in these watersheds.
Hence, in 1999 Modeling Unit staff began development of a simple, flexible, steady state
modeling tool which could be applied in a variety of watersheds for which there is limited
available data. CRAP is a customized ArcView project, written in Avenue, ArcView’s scripting
language. Output from the model is intended to represent ‘typical’ instream fecal coliform
concentrations within a given time step, for predefined design (critical) conditions.
3.2 Model Setup
The Rocky River watershed was delineated into seven subwatersheds. The land areas of each of
the subwatersheds are shown in Table 4. The subwatersheds range in size from 0.65 mi2 to 4.82
mi2 and encompass pasture, cultivated lands, forest, and low and high density development
lands.
Final Fecal Coliform TMDL for Rocky River
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Subwatershed Area (square miles)
WS01 1.82
WS02 1.46
WS03 1.75
WS04 1.40
WS05 2.21
WS06 4.82
WS07 0.65
Table 4. The areas of the subwatersheds of the Rocky River watershed.
Figure 9 illustrates the subwatershed delineations for the Rocky River watershed. The
subwatershed delineations were based, in part, on the location of the ambient and discharger
coalition monitoring sites, the location of the Mooresville WWTP, the topography of the area
and the geographic extent of the impaired segment of Rocky River. Subwatershed WS01 is
located below the ambient monitoring station at SR2420. The subwatershed WS02 includes the
area which drains the segment of the river from below the confluence of Rocky River and Dye
Branch to SR2420.
Land Cover WS01
acres (%)
WS02
acres (%)
WS 03
acres (%)
WS 04
acres
(%)
WS05
acres (%)
WS06
acres (%)
WS07
acres (%)
Cultivated 25.6
(2.2%)
5.0
(0.5%)
48.9
(4.4%)
14.1
(1.6%)
40.1
(2.8%)
57.2
(1.9%)
19.2
(4.6%)
High
Intensity
Development
130.4
(11.2%)
27.3
(2.9%)
18.1
(1.6%)
0 4.2
(0.3%)
14.3
(0.5%)
2.6
(0.6%)
Low
Intensity
Development
108.9
(9.4%)
218.4
(23.4%)
29.3
(2.6%)
0 0 0 0
Forest 633.3
(54.6%)
518.3
(55.6%)
523.4
(46.6%)
471.5
(52.8%)
762.0
(53.9%)
2397.9
(72.8%)
295.8
(71.1%)
Herbaceous
Cover
260.0
(22.4%)
163.6
(17.5%)
500.0
(44.5%)
404.8
(45.3%)
599.2
(42.4%)
611.6
(19.8%)
98.3
(23.6%)
Open Water 1.0
(0.1%)
0 2.2
(0.2%)
2.8
(0.3%)
7.2
(0.5%)
1.8
(0.06%)
0
Total 1159.2 932.6 1121.9 893.2 1412.7 3082.8 415.9
Table 5. The land cover/land use coverage of the subwatersheds in the Upper Rocky River
watershed.
3.2.1 Hydrology
Since the upper portion of the Rocky River is not gaged, flow information for Rocky River was
estimated using flow data from the Mallard Creek USGS gage station near Harrisburg, North
Carolina (Station Number 0212414900). This method of calculating flows for Rocky River is
Final Fecal Coliform TMDL for Rocky River
16
based on the assumption of equal flow and runoff per square mile for Mallard Creek and Rocky
River. Given the close proximity and similarities in land cover between the two watersheds, this
is a reasonable assumption.
To estimate the daily flow of Rocky River, an adjustment coefficient was established by dividing
the drainage area of Rocky River (14.09 square miles) by the drainage area of the Mallard Creek
gage (34.6 square miles). This coefficient (0.407) was multiplied by the daily flow of Mallard
Creek to arrive at the daily flow estimates for Rocky River. The daily effluent of the
Mooresville WWTP was added to the stream flow of subwatersheds downstream of the WWTP
(WS04, WS06, and WS07).
3.2.2 Hydraulics
There are several methods to estimate stream velocity based on stream flow data. The water
quality model utilized the power function to calculate the hydraulics of Rocky River.
The power function: V = aQb
V = velocity (feet per second)
Q = stream flow (cubic feet per second)
a = flow coefficient (unitless)
b = exponent for flow (unitless)
Time of travel (TOT) studies have been completed for the upper portion of Rocky River and Dye
Creek (DEHNR, 1993). The following values were used in the Rocky River model to calculate
stream velocity for the stream reaches in the subwatersheds.
Subwatershed Flow Coefficient a Exponent for flow b
WS01 0.25 0.64
WS02 0.25 0.64
WS03 0.377 0.428
WS04 0.25 0.64
WS05 0.377 0.428
WS06 0.377 0.428
WS07 0.377 0.428
Table 6. The power function variables used to calculate stream velocities in the Rocky River
watershed
Final Fecal Coliform TMDL for Rocky River
17
Figure 8. The subwatersheds of the Rocky River watershed.
Final Fecal Coliform TMDL for Rocky River
18

Source Average or Typical
ie Fecal Coliform Concentration
Cattle Grazing for the Modeled Condition

Land Cover (LC) Type
Pasture
Fecal Coliform Loading =
Fecal Coliform Conc. x
Flow from Land Area of LC Type
Figure 9. A schematic diagram of the non-point source fecal coliform loading calculations.
3.3 Fecal Coliform Source Representation
Both point sources and non-point sources of fecal coliform are represented in the Coliform
Routing and Allocation Program (CRAP) model. Figure 9 depicts the process the CRAP model
utilizes to calculate the fecal coliform loading from the non-point sources Each of the non-
point.sources of fecal coliform is linked to one or more land cover types (i.e., cattle grazing is
linked to herbaceous cover). Based on the assumption that flow yields from each of the land
covers in the watershed are equal per square mile, CRAP calculates the portion of the Rocky
River stream flow that originates from each land cover type. To calculate the fecal coliform load
(in cfu) from a specific source, the calculated flow from the land cover type was multiplied by
the assumed monthly average or typical fecal coliform concentration under the modeled
condition (either dry or wet weather). The fecal coliform loading was calculated on a daily basis
in the model runs. Table 7 outlines the assumed average fecal coliform concentrations for both
dry weather and wet weather conditions.
Final Fecal Coliform TMDL for Rocky River
19
Source
Category
Source
Sub-Category
Subwatershed Land Cover/
Land Use
Wet Weather
Assumed FC
Instream
Concentration
(cfu/100ml)
Dry Weather
Assumed FC
Instream
Concentration
(cfu/100ml)
Point Source WWTP WS04 Daily
Concentration
(varied on daily
basis)
Daily
Concentration
(varied on daily
basis)
Non-Point
Source
Wildlife WS01 – WS07 Forest 100 30
Livestock
Grazing/
Manure App./
Residual App.
WS04-WS07 Herbaceous/
Pasture
5,000 500
Manure
Application/
Residual App.
(Mar. – June;
Sept. – Nov.)
WS04-WS07 Cultivated 5,000 500
High Intensity
Development
(SSOs,
stormwater,
sewer
infiltration)
WS01 – WS03,
WS05
High Intensity
Developed
8,700 1,500
Low Intensity
Development
(include septic
system failure,
stormwater)
WS01 – WS03 Low Intensity
Developed
8,700 1,500
Table 7. The Assumed Instream Fecal Coliform Concentrations by Source Category and Land Cover
for the Mean Flow Condition in the Subwatersheds.
3.3.1 Wet Weather Versus Dry Weather Fecal Coliform Loading
The CRAP model can calculate fecal coliform loading on a daily time step during both dry and
wet weather conditions. For the Rocky River TMDL application of the CRAP model, dry
weather conditions were defined as three consecutive days without recorded rainfall in Salisbury,
North Carolina. Wet weather days account for all of the remaining days. To calculate the daily
fecal coliform loadings, different in-stream concentrations for dry and wet weather conditions
Final Fecal Coliform TMDL for Rocky River
20
were used. For the non-point sources of fecal coliform, it was assumed that wet weather fecal
coliform loads would be greater than dry weather loads.
3.3.2 NPDES Discharge
Mooresville WWTP, a 5.2 MGD NPDES individually permitted facility, is located in
subwatershed WS04. The daily fecal coliform load from the Mooresville WWTP was calculated
by using the daily fecal coliform effluent concentration and the daily discharge as reported in the
discharge monitoring reports. The daily fecal coliform loads from 1996- May 2001 were entered
into the model as a point source.
3.3.3 Livestock
3.3.3.1 Livestock Grazing
Fecal coliform loading from grazed areas was calculated using an instream fecal coliform
concentration for the portion of the stream flow that originates from pasturelands (managed
herbaceous and upland herbaceous land cover). Different fecal coliform concentrations were
used to calculate the fecal coliform bacteria loading during wet weather and dry weather events.
As previously described, dry weather days were defined as at least three consecutive days
without rain. The increased fecal coliform loading on wet weather takes into account the
increased fecal coliform concentrations in stormwater runoff.
Site specific information on annual grazing patterns was not available, therefore it was assumed
that there is no monthly variation in animal grazing on pasture land throughout the year. Several
studies have indicated that grazing cattle increases instream fecal coliform concentrations.
Stephenson and Street (1978) observed that the presence of cattle on rangelands increased fecal
coliform concentrations in stream from 0 to 2500/100ml (Khaleel et al., 1980). Fecal coliform
concentrations from grazed pasture runoff have been measured in the range of 120 – 1.3 x 106
cfu/100ml (Doran et al, 1981). A fecal coliform concentration of 5,000 cfu/100ml for wet
weather days was input into the model to calculate the fecal coliform load from grazing livestock
and manure application on pasture land (see Section 3.3.3.2 below) in subwatersheds WS04,
WS05, WS06 and WS07. A fecal coliform concentration of 500 cfu/100 ml was input into the
Final Fecal Coliform TMDL for Rocky River
21
model for dry weather days to calculate the fecal coliform load from grazing livestock and
manure application on pasture land.
3.3.3.2 Land Application of Agricultural Manure/Land Application of Residuals from
Mooresville WWTP
Fecal coliform loading values from the land application of manure and residual application were
calculated in the model using an instream fecal coliform concentration for the portion of the
stream flow that originates from cultivated lands and pasture lands (herbaceous land cover) in
WS04-WS07. Based on the information from Iredell Soil & Water Conservation District,
manure application is applied to cropland from March-June and September-November
(Stevenson communications, 2001). Manure is applied to pastureland during the same period but
extending through December. Under wet weather conditions, the manure application
contribution to the instream fecal coliform concentration was represented by a concentration of
5,000 cfu/100ml for the portion of the stream flow that originates from pasturelands (managed
herbaceous and upland herbaceous land cover).
The application of manure on cultivated lands was represented in the model by an input of
5,000cfu/100ml fecal coliform concentration during wet weather for the portion of the stream
flow that originates from cultivated land. The application of manure on cultivated lands has
been shown to increase fecal coliform to as high as 7200 counts/100ml (Khaleel et al, 1980).
Under dry weather conditions, the application of manure on cultivated lands was represented in
the model by an input of 500 cfu/100ml fecal coliform concentration for the portion of the stream
flow that originates on cultivated land.
3.3.4 Low Density Development/Septic Systems
Fecal coliform loading from developed land includes septic systems failure, leaking sanitary
sewers, illicit sanitary sewer connections and stormwater runoff (which can include waste from
domesticated animals and urban wildlife). Due to a lack of site specific data on these sources,
the fecal coliform loading from these sources were lumped together into one source category,
low density development. Several studies have been conducted to evaluate the effects of
development on stormwater runoff and instream fecal coliform concentrations. Farrell-Poe et al.
(1997) evaluated the effects of small rural municipalities on instream fecal coliform
Final Fecal Coliform TMDL for Rocky River
22
concentrations in agricultural watersheds. Samples collected from perennial streams
downstream of four small municipalities (populations ranged from 561 to 4,829) were
statistically significantly higher than the upstream samples. Two of the four towns were serviced
by sanitary sewers, but none of the towns had stormwater drains. The mean differences of the
fecal coliform concentrations of upstream and downstream samples ranged from 21 to 294
cfu/100ml.
Geldreich et al. studied fecal coliform concentration levels in urban runoff from a suburban area
of Cincinnati, Ohio. The average fecal coliform concentrations of runoff water, collected
throughout the year, from a wooded hillside, street gutters and a business district were
635cfu/100ml, 13,420cfu/100ml and 14,950cfu/100ml respectively (Khaleel et al., 1980). Fecal
coliform concentration levels have been studied in Onondaga Lake and seven of its tributaries in
metropolitan Syracuse, New York (Canale et al., 1993). The dry weather fecal coliform
concentrations of the tributaries, which were monitored daily throughout the summer of 1987,
ranged from 108cfu/100ml to 25,525cfu/100ml. Intensive sampling during two storm events was
conducted from the onset of the storms until the hydrographs returned to base flow conditions.
The mean wet weather fecal coliform concentrations of the tributaries ranged from >8,720 to
240,046cfu/100ml. In the supporting documentation of P-Load, a component of the USEPA
BASINS model, the geometric mean of fecal coliform concentrations in stormwater runoff from
residential land in the Atlanta area was cited as 8,700 cfu/100ml. This fecal coliform
concentration value was based on the Atlanta Regional Storm Water Characterization Study
(ARSWCS) (BASINS, 2001).
Fecal coliform loading values from septic system failure, leaking sanitary sewers and stormwater
runoff from low intensity development were calculated in the model using an instream fecal
coliform concentration for the portion of the stream flow that originates from the low intensity
developed lands in subwatersheds WS01, WS02 and WS03. The wet weather fecal coliform
loading from low intensity developed land was calculated in the model by multiplying a fecal
coliform concentration of 8700cfu/100ml by the portion of the stream flow that originates from
low intensity developed land. This is the same value cited in the P-Load component of the
USEPA Basins model. The dry weather fecal coliform loading was calculated by multiplying
Final Fecal Coliform TMDL for Rocky River
23
1500cfu/100ml by the portion of the stream flow that originates from low intensity developed
land.
3.3.5 High Density Development/ Sanitary Sewer Overflows
Fecal coliform bacteria from high intensity developed areas can originate from various sources
including runoff through storm sewers, illicit discharges of sanitary waste, overflowing sanitary
sewer systems, and leaking collection lines. Due to a lack of data on site specific fecal coliform
loadings from these sources, they were grouped together into one source class. The wet weather,
high density urban development loading was represented in the model by multiplying the
instream fecal coliform concentration of 8700 cfu/100ml to the portion of the stream flow that
originates from the high intensity developed lands in subwatersheds WS01, WS02, WS03 and
WS05. The dry weather loading was calculated by multiplying the instream fecal coliform
concentration of 1500cfu/100ml by the portion of the stream flow that originates from high
intensity developed lands. This value falls within the range of the urban dry weather instream
fecal coliform concentrations which have been measured in Mecklenburg County, North
Carolina for the Fecal Coliform Total Maximum Daily Load for Irwin, McAlpine, Little Sugar
and Sugar Creek Watersheds (Mecklenburg County, 2001)
3.3.6 Wildlife
To represent the wildlife fecal coliform loading in dry weather conditions, a concentration of 30
col/100ml was multiplied by the portion of the Rocky River stream flow that originates in
forested or shrubland areas. Under wet weather conditions, a concentration of 100 cfu/100ml
was used to calculate the wildlife loading. The State of South Carolina has estimated that the
geometric mean of fecal coliform concentrations in waterbodies that flow through forested areas
in South Carolina during all flow conditions is 30 col/100ml (SCDHEC, 1999). The Center for
Watershed Protection (1999) has cited a fecal coliform concentration range of 10-100 cfu/100ml
for forest runoff. The South Carolina estimate falls in this range.
3.4 Instream Decay Rate
Once fecal coliform bacteria reach a waterbody, environmental factors influence the extent of
their growth and decay. Physical factors that influence the bacteria populations include photo-
Final Fecal Coliform TMDL for Rocky River
24
oxidation, adsorption, flocculation, coagulation, sedimentation and temperature (USEPA, 1985).
Chemical toxicity, pH, nutrient levels, algae and the presence of fecal matter may also influence
the fecal coliform populations. The water quality model utilizes a first order decay rate to
calculate instream decay of fecal coliform bacteria.
Ct = Coe-kt
C= coliform concentration (cfu/100ml)
Co= initial coliform concentration (cfu/100ml)
Ct= coliform concentration at time t (cfu/100ml)
k= decay rate constant (day-1)
t = exposure time (days)
Bacterial die-off has been modeled as a first-order decay equation, using a decay rate between
0.7/day and 1.5/day (Center for Watershed Protection, 1999). In the Rocky River model, a
decay rate of 0.8/day was used for the existing condition and allocation runs.
3.5 Uncertainty
The lack of agreement between modeled and observed fecal coliform concentrations is due in
part to the high degree of uncertainty associated with predicting any water quality variable,
especially fecal coliform. The inability to accurately predict specific observed fecal coliform
concentrations can be attributed to model error, lack of sufficient information in source
assessment, gaps in our scientific knowledge, natural variability in instream fecal coliform
concentrations, field and laboratory measurement error, and lack of current site specific model
input parameters including decay rate, flow, rainfall data and landuse information. The available
models used to predict fecal coliform concentrations are not adept at characterizing prediction
uncertainty. The Coliform Routing and Allocation Program (CRAP) was intended to predict
daily average fecal coliform concentrations based on land use information. Due to the lack of site
specific information, literature values were used to calculate the fecal coliform loadings from the
various landuses. Because uncertainty associated with CRAP is expected to be large, the model
results should be interpreted in light of the model limitations and prediction uncertainty. Simple
models like CRAP 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 expected to be our best approach for determining the appropriate level
of management.
Final Fecal Coliform TMDL for Rocky River
25
3.6 Critical Conditions
Fecal coliform pollution in the Rocky River watershed originates from both point and non-point
sources. The critical conditions for waterbodies impaired by point sources typically occur during
periods of dry weather, while those impaired by non-point sources generally occur in periods of
wet weather. The Rocky River fecal coliform monitoring data indicate that elevated fecal
coliform levels occur throughout the year, during both dry and wet weather conditions. The
model was run for the period between January 1, 1996 and May 31, 2001 using estimated daily
stream flows. The model predicted the highest 30-day geometric mean to occur on February 13,
1998. As a result, the critical period was determined to be the thirty days between January 15,
1998 and February 13, 1998. Throughout this period, wet weather days (those day in which it
had rained in the last 72 hours) accounted for 27 of the 30 day period.
3.7 Model Results
The predicted daily fecal coliform concentrations over the simulation period (1996-June 2001) at
the model evaluation location are shown in Figure 10. The predicted and observed 30-day
geometric mean fecal coliform concentrations at SR2420 from 1996 to June 1998 are shown in
Figure 11. The model evaluation location is located at the DWQ ambient monitoring station at
SR2420 in Mecklenburg County. The modeling results indicate that non-point source fecal
coliform loading has a significant impact on instream fecal coliform concentrations in the Rocky
River watershed. The Mooresville WWTP is permitted to discharge a monthly geometric mean
fecal coliform concentration of 200 cfu/100ml with a maximum permitted discharge of 5.2
MGD.
The predicted 30-day rolling geometric mean fecal coliform concentrations are shown in Figure
12. Throughout the modeled period, the rolling 30-day geometric means of the predicted values
are greater than 200cfu/100ml throughout much of the modeled period. The 30-day geometric
means range in value from 23 cfu/100ml to 899 cfu/100ml.
Final Fecal Coliform TMDL for Rocky River
26
Figure 10. Modeling Results of the Simulated Daily Fecal Coliform Concentrations (cfu/100ml) at SR2420 compared to the observed fecal coliform
concentrations.

Predicted vs. Observed Fecal Coliform Concentrations (cfu/100ml)
at SR2420
1
10
100
1000
10000
07/20/95 12/01/96 04/15/98 08/28/99 01/09/01
Date
FC

C
o
n
c
Final Fecal Coliform TMDL for Rocky River
27
Figure 11. 1996 –1998 Predicted vs. Observed 30-Day Geometric Mean of Fecal Coliform Concentrations at SR2420.
1996-June 1998 30 Day Geometric Mean Fecal Coliform Concentrations at
SR2420 Observed vs. Predicted
1
10
100
1000
10000
1/
1
/
9
6
2/
1
/
9
6
3/
1
/
9
6
4/
1
/
9
6
5/
1
/
9
6
6/
1
/
9
6
7/
1
/
9
6
8/
1
/
9
6
9/
1
/
9
6
10
/
1
/
9
6
11
/
1
/
9
6
12
/
1
/
9
6
1/
1
/
9
7
2/
1
/
9
7
3/
1
/
9
7
4/
1
/
9
7
5/
1
/
9
7
6/
1
/
9
7
7/
1
/
9
7
8/
1
/
9
7
9/
1
/
9
7
10
/
1
/
9
7
11
/
1
/
9
7
12
/
1
/
9
7
1/
1
/
9
8
2/
1
/
9
8
3/
1
/
9
8
4/
1
/
9
8
5/
1
/
9
8
Date
Fe
c
a
l

C
o
l
i
f
o
r
m

C
o
n
c
e
n
t
r
a
t
i
o
n

(
c
f
u
/
1
0
0
m
l
)
Predicted Geometric Mean
Standard
Observed Geometric Mean
Final Fecal Coliform TMDL for Rocky River
28
Figure12. Rolling 30-Day Geometric Mean of Predicted Fecal Coliform Concentrations at SR2420.
30-Day Rolling Geometric Mean of Predicted Daily Fecal Coliform
Concentrations (cfu/100ml) at SR2420
0
100
200
300
400
500
600
700
800
900
1000
1/
1
/
9
6
4/
1
/
9
6
7/
1
/
9
6
10
/
1
/
9
6
1/
1
/
9
7
4/
1
/
9
7
7/
1
/
9
7
10
/
1
/
9
7
1/
1
/
9
8
4/
1
/
9
8
7/
1
/
9
8
10
/
1
/
9
8
1/
1
/
9
9
4/
1
/
9
9
7/
1
/
9
9
10
/
1
/
9
9
1/
1
/
0
0
4/
1
/
0
0
7/
1
/
0
0
10
/
1
/
0
0
1/
1
/
0
1
4/
1
/
0
1
Date
Fe
c
a
l

C
o
l
i
f
o
r
m

C
o
n
c
e
n
t
r
a
t
i
o
n

(
c
f
u
/
1
0
0
m
l
)
30-Day
Projected
GeomeanStandard
Final Fecal Coliform TMDL for Rocky River
29
4.0 ALLOCATION
4.1 Total Maximum Daily Load
A total maximum daily load is the total amount of pollutant that can be assimilated by the
receiving water body while achieving water quality standards. A TMDL is comprised of the sum
of wasteload allocations (WLA) for point sources, load allocations (LA) for non-point sources
and a margin of safety (MOS). This definition is expressed by the equation:
TMDL =
WLAs +
LAs + MOS
The objective of the TMDL is to estimate allowable pollutant loads and to allocate to the known
pollutant sources in the watershed so the appropriate control measures can be implemented and
the water quality standard can be achieved. The Code of Federal Regulations (40 CFR
§130.2(1)) states that TMDLs can be expressed in terms of mass per time, toxicity, or other
appropriate measures. In the Rocky River fecal coliform TMDL, loads are calculated based on
stream flow and instream fecal coliform concentrations that originate from a specific source/land
cover.
4.2 Seasonal Variation
The model was run over the time period of 1996- June 2001 simulation period under varying
daily flow conditions in order to capture seasonal flow fluctuations. The contribution of fecal
coliform bacteria from the various sources also varied throughout the year to reflect changes in
fecal coliform loading due to monthly changes in agricultural management practices.
4.3 Margin of Safety
The margin of safety (MOS) may be incorporated into a TMDL either implicitly, through the use
of conservative assumptions to develop the allocations, or explicitly through a reduction in the
TMDL target. For the Rocky River TMDL, an explicit margin of safety was incorporated in the
modeling analysis by setting the TMDL target at 175cfu/100ml, which is 25cfu/100ml lower
than the water quality target of 200cfu/100ml.
Final Fecal Coliform TMDL for Rocky River
30
Figure 14. Fecal Coliform Concentrations for the Simulated and the Reduction Scenarios.
30-Day Geometric Mean Fecal Coliform Concentrations for the Simulated
and the Allocation Scenarios
0
100
200
300
400
500
600
700
800
900
1000
1/
1
/
9
6
4/
1
/
9
6
7/
1
/
9
6
10
/
1
/
9
6
1/
1
/
9
7
4/
1
/
9
7
7/
1
/
9
7
10
/
1
/
9
7
1/
1
/
9
8
4/
1
/
9
8
7/
1
/
9
8
10
/
1
/
9
8
1/
1
/
9
9
4/
1
/
9
9
7/
1
/
9
9
10
/
1
/
9
9
1/
1
/
0
0
4/
1
/
0
0
7/
1
/
0
0
10
/
1
/
0
0
1/
1
/
0
1
4/
1
/
0
1
Date
Fe
c
a
l

C
o
l
i
f
o
r
m

C
o
n
c
e
n
t
r
a
t
i
o
n

(
c
f
u
/
1
0
0
m
l
)
Prediction
Standard
Allocation
MOS
Final Fecal Coliform TMDL for Rocky River
31
Source
Category
Source Sub-
Category
Subwatershed Simulation
FC
Concentration
(cfu/100ml)
Allocation
FC Concentration
(cfu/100ml)
%
Reduction
Point-
Source
(WLA)
WWTP WS03 23 200 0%
Non-
Point
Source
(LA)
Wildlife WS01-WS05 100 100 0%
High Density
Development
(stormwater,
SSOs, sewer
exfiltration)
WS01-WS03,
WS05
8,700 800 91%
Low Density
Development
(septic systems,
domestic animals,
urban wildlife)
WS01-WS03
8,700 800 91%
Livestock
Grazing/
Manure
Application
(Pastureland)
WS04-WS07 5,000 700 86%
Manure
Application/
Residual
Application
(Mar.-Jun;
Sept.-Nov.)
(Cultivated)
WS04-WS07 5,000 1000 80%
Table 8. Wet Weather in Stream Fecal Coliform Load Reductions for Subwatersheds in the
Rocky River Watershed.
Final Fecal Coliform TMDL for Rocky River
32
Source
Category
Source Sub-
Category
Subwatershed Simulation
FC
Concentration
(cfu/100ml)
Allocation
FC
Concentration
(cfu/100ml)
% Reduction
Point-Source
(WLA)
WWTP WS04 varied 200 0%
Non-Point
Source (LA)
Wildlife WS01-WS05 30 30 0%
High Density
Development
(stormwater,
SSOs, sewer
exfiltration)
WS01-WS03;
WS05
1500 1000 33%
Low Density
Development
(septic systems,
domestic
animals)
WS01-WS03 1500 1000 33%
Livestock
Grazing/
Manure
Application/
Residual
Application
(Pastureland)
WS04-WS07 500 400 20%
Manure
Application/
Residual
Application
(Cultivated
Land)
(March-June;
Sept.-Nov.)
WS04-WS07 500 400 20%
Table 9. Dry Weather in Stream Fecal Coliform Load Reductions for Subwatersheds in the Rocky
River Watershed.
Final Fecal Coliform TMDL for Rocky River
33
4.4 Load Reductions
The final allocation of fecal coliform loads are shown in Table 8 (wet weather) and Table 9 (dry
weather). The 30-day running geometric mean of the predicted fecal coliform concentrations at
SR2420 with the final fecal coliform allocations are shown in Figure 13.
In order to reach the water quality target of 200 cfu/100ml, with a 25 cfu/100ml explicit margin
of safety, the non-point source fecal coliform loading needs to be reduced by 20%-33% for the
various sources in dry weather conditions and 80%-91% reductions in wet weather conditions.
The NPDES individually permitted Mooresville WWTP typically discharges a small portion of
the modeled fecal coliform loading into the Rocky River watershed and has consistently met
their monthly discharge limit (Appendix I). Therefore, the TMDL allocation focuses the fecal
coliform loading reductions on the non-point sources. The Total Maximum Daily Load of fecal
coliform bacteria is shown in Table 10.
When the sources of fecal coliform are reduced in the model to satisfy the water quality target of
200 cfu/100ml, the predicted instantaneous fecal coliform concentrations in the allocation
scenario never exceed 400 cfu/100ml. As a result, the reduction scenario summarized in Tables
8 and 9 satisfy the portion of the standard which states that instantaneous fecal coliform
concentrations should not exceed 400 cfu/100ml over 20% of the time.
Wasteload Allocation
(WLA)
Load Allocation
(LA)
Margin of Safety
(MOS)
Total Maximum Daily
Load (TMDL)
1.18 E12 cfu/30 days 1.09 E13 cfu/30 days 1.74 E12 cfu/30 days 1.38 E13 cfu/30days
Table 10. Total Maximum Daily Load of fecal coliform bacteria during the critical period
(1/15/1998-2/13/1998).
5.0 SUMMARY AND FUTURE CONSIDERATIONS
The sources of fecal coliform in the Rocky River watershed include urban sources in the
Mooresville area, livestock grazing and manure application on agricultural lands, residual
application from the Mooresville WWTP, the Mooresville WWTP, and wildlife. There is a
significant contribution of fecal coliform load from the Mooresville area. The Coliform Routing
and Allocation Program was utilized to simulate instream fecal concentrations and to allocate the
fecal coliform loads to the various sources. In order for the water quality target to be met, the
Final Fecal Coliform TMDL for Rocky River
34
final allocation of the fecal coliform loads requires a non-point source load reduction between
20%-33% under dry weather conditions and 80%-91% under wet weather conditions for the
various non-point sources of fecal coliform. The model estimated that the Mooresville WWTP
typically contributes a small portion of the total fecal coliform loading in the watershed.
Therefore, the reduction allocation focuses on the fecal coliform loading from non-point sources.
5.1 Monitoring
Fecal coliform monitoring will continue on a monthly interval at the ambient monitoring site and
at the discharger coalition site (SR2420). The continued monitoring of fecal coliform
concentrations will allow for the evaluation of progress towards the goal of reaching water
quality standards by comparing the instream data to the TMDL target. In addition to this data
collection, further fecal coliform monitoring may be considered. Additional monitoring beyond
the ambient and discharger stations’ monitoring could aid in a fecal coliform source assessment
in the watershed and further aid in the evaluation of the progress towards meeting the water
quality target and the water quality standard.
To comply with EPA guidance, North Carolina may adopt new bacteria standards utilizing
Escherichia coli (E. coli) and enterococci in the near future. Thus, future monitoring efforts to
measure compliance with this TMDL should include using the E. coli and enterococci. Per EPA
recommendations (EPA, 2000c), if future monitoring for E. coli/enterococci 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.
5.2 Implementation
Implementation plans are not included in this TMDL. The involvement of local governments
and agencies will be needed in order to develop implementation plans. The DWQ will assist the
local governments and agencies in developing the implementation plan for the Rocky River
TMDL.
Final Fecal Coliform TMDL for Rocky River
35
6.0 PUBLIC PARTICIPATION
The City of Mooresville, Mecklenburg, Iredell and Cabarrus Counties have been notified
throughout the TMDL process of the progress of the Rocky River Fecal Coliform TMDL. The
counties, extension service and soil and water conservation districts have supplied septic data to
aid in the source assessment portion of the TMDL. A public meeting was held in the watershed
to discuss the TMDL. The TMDL was publicly noticed and comments on the TMDL were
accepted over a period of at least thirty days.
Final Fecal Coliform TMDL for Rocky River
36
8.0 REFERENCES
BASINS 3.0 Beta 2001. U.S. Environmental Protection Agency. P-Load Reference Guide
Canale, R.P., Auer, M.T., Owens, E.M., Heidtke, T.M., and S.W. Effler. 1993. Modeling Fecal
Coliform Bacteria-II. Model Development and Application. Wat. Res. 27(4):703-714.
Center for Watershed Protection. 1999. Microbes and Urban Watersheds: Concentrations,
Sources and Pathways. Watershed Protection Techniques 3(1): 554:565.
Division of Environmental Health (DEH). NCDENR. 1999. North Carolina On-Site Wastewater
Non-Point Source (NPS) Pollution Program. June 24, 1999.
Division of Environmental Health (DEH). NCDENR. 2000. Report on the Proper Maintenance
of Septic Tank Systems in Accordance with Section 13.5 of HB 1160 (Clean Water Act of 1999).
March 15, 2000.
Doran, J.W., J.S. Schepers, and N.P. Swanson. 1981. Chemical and bacteriological quality of
pasture runoff. Journal of Soil and Water Conservation May-June: 166-171.
Farrell-Poe, K.L., Ranjha, A.Y. and S. Ramalingam. 1997. Bacterial Contributions by Rural
Municipalities in Agricultural Watersheds. Trans of the ASAE, 40(1) 97-101.
Khaleel, R. Reddy, K.R. and M.R. Overcash. 1980. Transport of Potential Pollutants in Runoff
Water from Land Areas Receiving Animal Wastes: A Review. Water Research 14: 421-436.
Mecklenburg County Department of Environmental Protection. 2001. Public Review Draft
Fecal Coliform Total Maximum Daily Load for Irwin, McAlpine, Little Sugar and Sugar Creek
Watersheds.
North Carolina Department of Agriculture. 2001. Agricultural Statistics Division-County
Statistics. www.ncagr.com/stats/cntysumm/ and http://govinfo.library.orst.edu/cgi-bin/ag-
state?North+Carolina.
North Carolina Department of Environment, Health and Natural Resources (DEHNR, 1993). A
QUAL2E-UNCAS Application to the Rocky River and Mallard Creek. Cabbarrus, Iredell, and
Mecklenburg Counties, North Carolina. March 31, 1993.
South Carolina Department of Health and Environmental Control. Total Maximum Daily Load
Development for Camp Creek CW-235 Fecal Coliform. August 17, 1999.
Stevenson, J. 2001. Iredell Soil & Water Conservation District. Personal communication with
John Stevenson. August 2001.
Stephenson, G.R. and L.U. Street. 1978. Bacterial Variations in streams from a southwest Idaho
rangeland watershed. J. Environ. Qual. 7:150-57
Final Fecal Coliform TMDL for Rocky River
37
Testerman, D. 2002. Cabarrus Soil & Water Conservation District Personal Communication
with John Stevenson. February 2002.
U.S. Environmental Protection Agency (USEPA). 1991. Guidance for Water Quality-Based
Decisions: The TMDL Process. Assessment and Watershed Protection Division, Washington,
DC.
U.S. Environmental Protection Agency, Federal Advisory Committee (FACA). Draft final
TMDL Federal Advisory Committee Report. 4/28/98.
U.S. Environmental Protection Agency (USEPA) 2000a. 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).
U.S.Environmental Protection Agency (USEPA) 2000c. Implementation Guidance for Ambient
Water Quality Criteria for Bacteria – 1986. DRAFT. Office of Water. EPA-823-D-00-001.
U.S. Environmental Protection Agency (USEPA) 1985. Rates, constants, and kinetics
formulations in surface water quality modeling (II ed.). Athens, GA: EPA-600-3-85-040.
Centralina Council of Governments, 2001. 2000 Population of Centralina’s Member
Governments. http://www.centralina.org/pdf/2000%20Population.pdf
Final Fecal Coliform TMDL for Rocky River
38
Appendix 1. Moorsesville WWTP (NC0046728) Discharge Data Used in the Rocky River Fecal
Coliform Model.2
Mooresville WWTP NC0046728 Discharge
Date MGD CFS Effluent FC Conc Date MGD CFS Effluent FC Conc
1/1/96 1.685 2.608 1 2/7/96 3.542 5.483 1000
1/2/96 2.531 3.918 1690 2/8/96 3.202 4.957 6000
1/3/96 2.425 3.754 3435 2/9/96 2.925 4.528 67
1/4/96 1.819 2.816 82 2/10/96 2.973 4.602 67
1/5/96 2.343 3.627 2150 2/11/96 2.531 3.918 67
1/6/96 1.708 2.644 146 2/12/96 3.208 4.966 440
1/7/96 1.103 1.707 146 2/13/96 2.354 3.644 6
1/8/96 1.176 1.820 6 2/14/96 3.226 4.994 2
1/9/96 1.809 2.800 230 2/15/96 3.585 5.550 2
1/10/96 1.87 2.895 114 2/16/96 3.1 4.799 200
1/11/96 2.203 3.410 2600 2/17/96 3.215 4.977 67
1/12/96 1.754 2.715 4 2/18/96 4.069 6.299 67
1/13/96 1.881 2.912 146 2/19/96 4.43 6.858 54
1/14/96 2.675 4.141 146 2/20/96 3.028 4.687 2
1/15/96 2.532 3.920 146 2/21/96 3.05 4.721 74
1/16/96 2.831 4.382 510 2/22/96 3.364 5.207 24
1/17/96 2.491 3.856 3600 2/23/96 3.497 5.413 310
1/18/96 3.554 5.502 2000 2/24/96 2.601 4.026 67
1/19/96 3.302 5.111 2 2/25/96 2.993 4.633 67
1/20/96 1.676 2.594 146 2/26/96 3.831 5.930 350
1/21/96 1.743 2.698 146 2/27/96 3.459 5.354 2
1/22/96 2.668 4.130 104 2/28/96 3.319 5.138 4300
1/23/96 2.249 3.481 42 2/29/96 3.094 4.789 120
1/24/96 3.433 5.314 88 3/1/96 2.912 4.508 2500
1/25/96 2.642 4.090 2100 3/2/96 2.139 3.311 121
1/26/96 3.37 5.217 6000 3/3/96 2.513 3.890 121
1/27/96 5.219 8.079 146 3/4/96 2.954 4.573 2
1/28/96 2.545 3.940 146 3/5/96 2.82 4.365 390
1/29/96 2.621 4.057 2 3/6/96 3.015 4.667 2200
1/30/96 3.002 4.647 42 3/7/96 3.844 5.950 3800
1/31/96 3.286 5.087 86 3/8/96 2.727 4.221 4
2/1/96 2.814 4.356 12 3/9/96 2.342 3.625 121
2/2/96 4.2 6.502 300 3/10/96 1.963 3.039 121
2/3/96 2.19 3.390 67 3/11/96 1.668 2.582 42
2/4/96 1.476 2.285 67 3/12/96 2.672 4.136 2
2/5/96 2.172 3.362 100 3/13/96 3.029 4.689 76
2/6/96 2.658 4.115 1040 3/14/96 2.853 4.416 32

2 Weekly fecal coliform averages were used in the model if the effluent was not monitored for fecal coliform on a
given day.
Final Fecal Coliform TMDL for Rocky River
39
Date MGD CFS Effluent FC Conc Date MGD CFS Effluent FC Conc
3/15/96 3.247 5.026 2000 4/30/96 3.426 5.303 2
3/16/96 2.821 4.367 121 5/1/96 3.047 4.717 2
3/17/96 2.787 4.314 121 5/2/96 2.914 4.511 4
3/18/96 2.3 3.560 105 5/3/96 3.066 4.746 14
3/19/96 3.87 5.991 46 5/4/96 3.167 4.902 7
3/20/96 2.569 3.977 310 5/5/96 2.46 3.808 7
3/21/96 2.74 4.241 5300 5/6/96 2.822 4.368 10
3/22/96 2.338 3.619 6000 5/7/96 2.571 3.980 6
3/23/96 2.597 4.020 121 5/8/96 2.822 4.368 12
3/24/96 2.333 3.611 121 5/9/96 4.078 6.313 4
3/25/96 2.823 4.370 4 5/10/96 2.435 3.769 2
3/26/96 3.273 5.067 96 5/11/96 2.876 4.452 7
3/27/96 3.03 4.690 2 5/12/96 2.858 4.424 7
3/28/96 3.377 5.228 1067 5/13/96 2.955 4.574 2
3/29/96 2.501 3.872 538 5/14/96 3.415 5.286 10
3/30/96 2.733 4.231 121 5/15/96 3.09 4.783 30
3/31/96 2.572 3.981 121 5/16/96 3.295 5.101 320
4/1/96 3.362 5.204 2 5/17/96 3.25 5.031 4
4/2/96 3.22 4.985 2 5/18/96 3.041 4.707 7
4/3/96 2.651 4.104 2 5/19/96 2.349 3.636 7
4/4/96 2.971 4.599 2 5/20/96 3.417 5.289 2
4/5/96 2.822 4.368 3 5/21/96 2.831 4.382 6
4/6/96 1.845 2.856 3 5/22/96 2.631 4.073 18
4/7/96 1.526 2.362 3 5/23/96 3.904 6.043 14
4/8/96 2.387 3.695 2 5/24/96 2.62 4.056 14
4/9/96 2.368 3.666 2 5/25/96 1.85 2.864 7
4/10/96 2.796 4.328 2 5/26/96 2.437 3.772 7
4/11/96 3.31 5.124 42 5/27/96 1.948 3.015 7
4/12/96 2.452 3.796 34 5/28/96 1.969 3.048 2
4/13/96 2.864 4.433 3 5/29/96 2.517 3.896 2
4/14/96 2.156 3.337 3 5/30/96 2.572 3.981 4
4/15/96 3.327 5.150 8 5/31/96 1.915 2.964 10
4/16/96 3.3 5.108 16 6/1/96 1.554 2.406 4
4/17/96 3.313 5.128 98 6/2/96 1.687 2.611 4
4/18/96 2.941 4.553 4 6/3/96 2.443 3.782 2
4/19/96 3.294 5.099 2 6/4/96 2.461 3.810 6
4/20/96 2.352 3.641 3 6/5/96 2.52 3.901 2
4/21/96 3.063 4.741 3 6/6/96 2.517 3.896 24
4/22/96 2.996 4.638 2 6/7/96 2.042 3.161 4
4/23/96 3.997 6.187 12 6/8/96 2.53 3.916 4
4/24/96 3.951 6.116 6 6/9/96 2.686 4.158 4
4/25/96 3.353 5.190 2 6/10/96 2.214 3.427 4
4/26/96 3.078 4.765 2 6/11/96 2.283 3.534 2
4/27/96 2.497 3.865 3 6/12/96 2.857 4.423 12
4/28/96 2.752 4.260 3 6/13/96 2.298 3.557 10
4/29/96 3.515 5.441 2 6/14/96 2.977 4.608 6
Final Fecal Coliform TMDL for Rocky River
40
Date MGD CFS Effluent FC Conc Date MGD CFS Effluent FC Conc
6/15/96 2.854 4.418 4 7/31/96 3.837 5.940 30
6/16/96 2.263 3.503 4 8/1/96 4.19 6.486 2
6/17/96 2.977 4.608 2 8/2/96 3.522 5.452 2
6/18/96 2.474 3.830 2 8/3/96 3.305 5.116 2
6/19/96 3.424 5.300 24 8/4/96 3.377 5.228 2
6/20/96 2.996 4.638 2 8/5/96 3.099 4.797 2
6/21/96 2.091 3.237 2 8/6/96 2.863 4.432 2
6/22/96 2.498 3.867 4 8/7/96 2.624 4.062 2
6/23/96 2.354 3.644 4 8/8/96 2.503 3.875 2
6/24/96 2.318 3.588 2 8/9/96 2.231 3.454 2
6/25/96 3.305 5.116 2 8/10/96 3.322 5.142 2
6/26/96 3.176 4.916 8 8/11/96 3.432 5.313 2
6/27/96 2.926 4.529 10 8/12/96 2.771 4.289 2
6/28/96 2.604 4.031 2 8/13/96 2.796 4.328 2
6/29/96 2.955 4.574 4 8/14/96 2.618 4.053 2
6/30/96 2.403 3.720 4 8/15/96 2.322 3.594 2
7/1/96 3.863 5.980 2 8/16/96 2.27 3.514 2
7/2/96 3.299 5.107 2 8/17/96 2.093 3.240 2
7/3/96 1.683 2.605 2 8/18/96 2.643 4.091 2
7/4/96 2.437 3.772 2 8/19/96 2.788 4.316 2
7/5/96 2.446 3.786 2 8/20/96 3.276 5.071 2
7/6/96 2.858 4.424 2 8/21/96 3.297 5.104 12
7/7/96 2.555 3.955 2 8/22/96 3.228 4.997 6
7/8/96 3.115 4.822 2 8/23/96 2.536 3.926 20
7/9/96 3.37 5.217 2 8/24/96 2.589 4.008 2
7/10/96 3.848 5.957 4 8/25/96 3.188 4.935 2
7/11/96 3.553 5.500 10 8/26/96 3.309 5.122 4
7/12/96 3.847 5.955 4 8/27/96 2.995 4.636 43
7/13/96 3.577 5.537 2 8/28/96 2.995 4.636 2
7/14/96 3.839 5.943 2 8/29/96 3.326 5.149 2
7/15/96 3.369 5.215 2 8/30/96 2.557 3.958 2
7/16/96 3.642 5.638 2 8/31/96 1.967 3.045 2
7/17/96 3.604 5.579 8 9/1/96 1.942 3.006 3
7/18/96 3.841 5.946 2 9/2/96 2.314 3.582 3
7/19/96 2.845 4.404 2 9/3/96 3.263 5.051 2
7/20/96 2.702 4.183 2 9/4/96 4.24 6.563 2
7/21/96 2.153 3.333 2 9/5/96 2.788 4.316 18
7/22/96 2.781 4.305 2 9/6/96 3.487 5.398 2
7/23/96 3.121 4.831 4 9/7/96 3.281 5.079 3
7/24/96 2.847 4.407 30 9/8/96 2.729 4.224 3
7/25/96 3.807 5.893 2 9/9/96 2.729 4.224 2
7/26/96 2.614 4.046 2 9/10/96 2.839 4.395 2
7/27/96 2.23 3.452 2 9/11/96 3.84 5.944 2
7/28/96 2.396 3.709 2 9/12/96 3.176 4.916 8
7/29/96 2.799 4.333 4 9/13/96 3.054 4.728 22
7/30/96 3.178 4.920 2 9/14/96 2.349 3.636 3
Final Fecal Coliform TMDL for Rocky River
41
Date MGD CFS Effluent FC Conc Date MGD CFS Effluent FC Conc
9/15/96 2.045 3.166 3 10/31/96 3.141 4.862 2
9/16/96 3.119 4.828 2 11/1/96 2.974 4.604 16
9/17/96 2.856 4.421 2 11/2/96 1.932 2.991 11
9/18/96 3.082 4.771 52 11/3/96 1.593 2.466 11
9/19/96 3.254 5.037 2 11/4/96 2.654 4.108 2
9/20/96 2.529 3.915 2 11/5/96 2.834 4.387 12
9/21/96 2.623 4.060 3 11/6/96 3.222 4.988 20
9/22/96 1.594 2.467 3 11/7/96 3.63 5.619 40
9/23/96 3.232 5.003 2 11/8/96 2.786 4.313 56
9/24/96 2.936 4.545 2 11/9/96 2.169 3.358 11
9/25/96 3.204 4.960 2 11/10/96 1.177 1.822 11
9/26/96 3.245 5.023 4 11/11/96 2.322 3.594 11
9/27/96 2.527 3.912 2 11/12/96 2.58 3.994 3
9/28/96 2.608 4.037 3 11/13/96 3.94 6.099 6
9/29/96 1.525 2.361 3 11/14/96 2.728 4.223 2
9/30/96 3.071 4.754 2 11/15/96 2.286 3.539 18
10/1/96 3.624 5.610 8 11/16/96 1.787 2.766 11
10/2/96 3.049 4.720 20 11/17/96 1.625 2.515 11
10/3/96 3.155 4.884 6 11/18/96 3.115 4.822 8
10/4/96 2.555 3.955 10 11/19/96 3.213 4.974 24
10/5/96 1.853 2.868 6 11/20/96 2.888 4.471 42
10/6/96 1.345 2.082 6 11/21/96 3.047 4.717 2
10/7/96 2.612 4.043 2 11/22/96 1.876 2.904 20
10/8/96 3.7 5.728 2 11/23/96 1.473 2.280 11
10/9/96 2.958 4.579 2 11/24/96 1.704 2.638 11
10/10/96 2.448 3.789 2 11/25/96 3.101 4.800 6
10/11/96 2.612 4.043 2 11/26/96 2.972 4.601 94
10/12/96 1.507 2.333 6 11/27/96 2.428 3.759 2
10/13/96 1.476 2.285 6 11/28/96 2.282 3.533 11
10/14/96 2.567 3.974 2 11/29/96 1.468 2.272 11
10/15/96 2.612 4.043 8 11/30/96 1.488 2.303 11
10/16/96 2.662 4.121 10 12/1/96 3.513 5.438 4
10/17/96 2.752 4.260 5 12/2/96 2.806 4.344 2
10/18/96 2.751 4.259 14 12/3/96 1.533 2.373 4
10/19/96 1.587 2.457 6 12/4/96 2.928 4.533 2
10/20/96 1.268 1.963 6 12/5/96 3.134 4.851 2
10/21/96 2.757 4.268 776 12/6/96 2.569 3.977 8
10/22/96 2.767 4.283 3 12/7/96 2.775 4.296 4
10/23/96 2.866 4.437 2 12/8/96 1.802 2.789 4
10/24/96 2.664 4.124 24 12/9/96 1.713 2.652 2
10/25/96 2.245 3.475 2 12/10/96 3.311 5.125 2
10/26/96 2.174 3.365 6 12/11/96 3.466 5.365 2
10/27/96 1.485 2.299 6 12/12/96 3.239 5.014 2
10/28/96 3.075 4.760 6 12/13/96 3.714 5.749 2
10/29/96 3.176 4.916 28 12/14/96 2.419 3.745 4
10/30/96 3.213 4.974 2 12/15/96 1.882 2.913 4
Final Fecal Coliform TMDL for Rocky River
42
Date MGD CFS Effluent FC Conc Date MGD CFS Effluent FC Conc
12/16/96 3.325 5.147 4 1/31/97 3.051 4.723 1245
12/17/96 3.219 4.983 137 2/1/97 1.916 2.966 22
12/18/96 3.05 4.721 182 2/2/97 1.483 2.296 22
12/19/96 3.103 4.803 7 2/3/97 2.668 4.130 2
12/20/96 2.051 3.175 4 2/4/97 3.529 5.463 39
12/21/96 1.705 2.639 4 2/5/97 3.316 5.133 23
12/22/96 1.562 2.418 4 2/6/97 3.132 4.848 43
12/23/96 1.3434 2.080 2 2/7/97 2.872 4.446 64
12/24/96 1.323 2.048 4 2/8/97 1.828 2.830 5
12/25/96 1.095 1.695 4 2/9/97 1.546 2.393 5
12/26/96 1.158 1.793 4 2/10/97 2.687 4.159 2
12/27/96 1.131 1.751 2 2/11/97 3.044 4.712 4
12/28/96 1.259 1.949 4 2/12/97 3.031 4.692 2
12/29/96 1.404 2.173 4 2/13/97 3.033 4.695 58
12/30/96 2.047 3.169 2 2/14/97 4.234 6.554 4
12/31/96 1.465 2.268 2 2/15/97 3.718 5.755 67
1/1/97 1.177 1.822 2 2/16/97 2.106 3.260 67
1/2/97 1.739 2.692 2 2/17/97 2.998 4.641 22
1/3/97 1.58 2.446 2 2/18/97 3.21 4.969 58
1/4/97 1.337 2.070 2 2/19/97 3.076 4.762 1390
1/5/97 1.843 2.853 2 2/20/97 3.489 5.401 260
1/6/97 2.425 3.754 2 2/21/97 3.591 5.559 3
1/7/97 3.035 4.698 2 2/22/97 2.609 4.039 4
1/8/97 3.011 4.661 2 2/23/97 1.495 2.314 4
1/9/97 3.886 6.015 6 2/24/97 2.857 4.423 2
1/10/97 3.224 4.991 54 2/25/97 2.974 4.604 31
1/11/97 1.782 2.759 51 2/26/97 3.024 4.681 2
1/12/97 1.812 2.805 51 2/27/97 3.544 5.486 2
1/13/97 2.684 4.155 27 2/28/97 5.76 8.916 4
1/14/97 2.709 4.193 67 3/1/97 3.157 4.887 4
1/15/97 3.328 5.152 106 3/2/97 2.545 3.940 4
1/16/97 3.401 5.265 56 3/3/97 3.423 5.299 10
1/17/97 2.791 4.320 32 3/4/97 3.299 5.107 10
1/18/97 2.083 3.224 34 3/5/97 3.386 5.241 2
1/19/97 1.352 2.093 34 3/6/97 2.914 4.511 2
1/20/97 2.761 4.274 34 3/7/97 3.044 4.712 2
1/21/97 3.511 5.435 2 3/8/97 2.633 4.076 7
1/22/97 3.427 5.305 330 3/9/97 1.917 2.967 7
1/23/97 3.227 4.995 82 3/10/97 2.927 4.531 2
1/24/97 3.09 4.783 24 3/11/97 3.776 5.845 2
1/25/97 2.4 3.715 46 3/12/97 3.903 6.042 116
1/26/97 1.388 2.149 46 3/13/97 3.975 6.153 2
1/27/97 2.847 4.407 74 3/14/97 3.485 5.395 13
1/28/97 3.252 5.034 64 3/15/97 2.487 3.850 65
1/29/97 3.223 4.989 6 3/16/97 1.54 2.384 65
1/30/97 3.107 4.810 6 3/17/97 2.907 4.500 35
Final Fecal Coliform TMDL for Rocky River
43
Date MGD CFS Effluent FC Conc Date MGD CFS Effluent FC Conc
3/18/97 3.774 5.842 180 5/3/97 2.039 3.156 2
3/19/97 5.633 8.720 450 5/4/97 2.162 3.347 2
3/20/97 3.952 6.118 66 5/5/97 3.607 5.584 2
3/21/97 3.678 5.693 6 5/6/97 3.86 5.975 23
3/22/97 2.504 3.876 30 5/7/97 3.87 5.991 46
3/23/97 1.812 2.805 30 5/8/97 4.074 6.307 2
3/24/97 3.183 4.927 46 5/9/97 3.572 5.529 2
3/25/97 3.505 5.426 280 5/10/97 2.597 4.020 6
3/26/97 3.581 5.543 7 5/11/97 1.897 2.937 6
3/27/97 3.614 5.594 8 5/12/97 3.096 4.793 2
3/28/97 3.146 4.870 29 5/13/97 3.729 5.772 58
3/29/97 1.852 2.867 29 5/14/97 3.348 5.183 370
3/30/97 1.664 2.576 29 5/15/97 3.108 4.811 4
3/31/97 1.981 3.067 2 5/16/97 2.908 4.502 14
4/1/97 3.058 4.734 2 5/17/97 2.516 3.895 19
4/2/97 3.423 5.299 2 5/18/97 2.104 3.257 19
4/3/97 3.345 5.178 16 5/19/97 2.982 4.616 16
4/4/97 3.33 5.155 10 5/20/97 3.923 6.073 42
4/5/97 2.701 4.181 8 5/21/97 3.595 5.565 8
4/6/97 2.646 4.096 8 5/22/97 3.234 5.006 2
4/7/97 3.529 5.463 8 5/23/97 2.78 4.303 52
4/8/97 3.387 5.243 31 5/24/97 1.831 2.834 14
4/9/97 3.011 4.661 2 5/25/97 2.638 4.084 14
4/10/97 3.674 5.687 6 5/26/97 2.867 4.438 14
4/11/97 3.294 5.099 10 5/27/97 3.536 5.474 8
4/12/97 3.424 5.300 29 5/28/97 3.463 5.361 2
4/13/97 2.386 3.693 29 5/29/97 3.511 5.435 64
4/14/97 3.62 5.604 6 5/30/97 3.511 5.435 138
4/15/97 3.93 6.084 68 5/31/97 3.102 4.802 19
4/16/97 3.75 5.805 86 6/1/97 1.908 2.954 80
4/17/97 3.539 5.478 300 6/2/97 3.226 4.994 50
4/18/97 3.092 4.786 2 6/3/97 3.198 4.950 111
4/19/97 2.371 3.670 9 6/4/97 3.387 5.243 106
4/20/97 1.924 2.978 9 6/5/97 3.273 5.067 52
4/21/97 3.336 5.164 6 6/6/97 3.247 5.026 108
4/22/97 4.236 6.557 2 6/7/97 2.702 4.183 80
4/23/97 5.21 8.065 6 6/8/97 1.936 2.997 80
4/24/97 3.693 5.717 18 6/9/97 3.319 5.138 20
4/25/97 3.167 4.902 52 6/10/97 3.306 5.118 200
4/26/97 2.36 3.653 9 6/11/97 3.318 5.136 14
4/27/97 3.489 5.401 9 6/12/97 5.185 8.026 12
4/28/97 5.982 9.260 2 6/13/97 3.894 6.028 2
4/29/97 5.031 7.788 2 6/14/97 2.838 4.393 17
4/30/97 4.216 6.526 2 6/15/97 2.096 3.245 17
5/1/97 4.05 6.269 2 6/16/97 3.389 5.246 4
5/2/97 2.888 4.471 2 6/17/97 3.955 6.122 2
Final Fecal Coliform TMDL for Rocky River
44
Date MGD CFS Effluent FC Conc Date MGD CFS Effluent FC Conc
6/18/97 3.672 5.684 2 8/3/97 3.512 5.437 2
6/19/97 3.777 5.847 8 8/4/97 3.815 5.906 290
6/20/97 4.024 6.229 310 8/5/97 3.738 5.786 450
6/21/97 3.063 4.741 8 8/6/97 3.537 5.475 67
6/22/97 2.255 3.491 8 8/7/97 3.044 4.712 12
6/23/97 3.335 5.163 3 8/8/97 2.374 3.675 8
6/24/97 3.692 5.715 26 8/9/97 2.12 3.282 8
6/25/97 3.688 5.709 6 8/10/97 3.644 5.641 6
6/26/97 3.653 5.655 5 8/11/97 3.832 5.932 2
6/27/97 3.028 4.687 2 8/12/97 3.793 5.872 5
6/28/97 2.928 4.533 5 8/13/97 4.095 6.339 6
6/29/97 2.053 3.178 5 8/14/97 3.047 4.717 2
6/30/97 2.328 3.604 2 8/15/97 2.866 4.437 8
7/1/97 2.111 3.268 135 8/16/97 2.361 3.655 8
7/2/97 2.494 3.861 2 8/17/97 3.409 5.277 6
7/3/97 2.396 3.709 2 8/18/97 3.698 5.724 23
7/4/97 2.101 3.252 8 8/19/97 3.893 6.026 2
7/5/97 2.011 3.113 8 8/20/97 3.61 5.588 4
7/6/97 1.872 2.898 8 8/21/97 2.31 3.576 10
7/7/97 2.885 4.466 2 8/22/97 3.205 4.961 8
7/8/97 3.489 5.401 2 8/23/97 2.068 3.201 8
7/9/97 3.711 5.745 2 8/24/97 3.271 5.063 2
7/10/97 3.93 6.084 8 8/25/97 3.338 5.167 56
7/11/97 3.184 4.929 10 8/26/97 3.207 4.964 2
7/12/97 2.98 4.613 4 8/27/97 3.905 6.045 2
7/13/97 2.365 3.661 4 8/28/97 2.618 4.053 2
7/14/97 3.119 4.828 8 8/29/97 1.958 3.031 8
7/15/97 3.969 6.144 24 8/30/97 2.091 3.237 8
7/16/97 3.627 5.615 2 8/31/97 2.232 3.455 303
7/17/97 3.339 5.169 6 9/1/97 3.355 5.193 94
7/18/97 3.587 5.553 18 9/2/97 3.486 5.396 370
7/19/97 2.836 4.390 8 9/3/97 3.287 5.088 510
7/20/97 2.419 3.745 8 9/4/97 3.133 4.850 480
7/21/97 3.78 5.851 8 9/5/97 2.124 3.288 11
7/22/97 4.316 6.681 3 9/6/97 2.158 3.341 11
7/23/97 5.776 8.941 52 9/7/97 3.156 4.885 16
7/24/97 4.308 6.669 2 9/8/97 3.478 5.384 2
7/25/97 3.579 5.540 10 9/9/97 1.979 3.063 34
7/26/97 3.138 4.858 8 9/10/97 3.548 5.492 40
7/27/97 2.453 3.797 8 9/11/97 3.58 5.542 13
7/28/97 3.247 5.026 7 9/12/97 3.291 5.094 10
7/29/97 3.922 6.071 220 9/13/97 2.034 3.149 11
7/30/97 4.02 6.223 26 9/14/97 1.977 3.060 11
7/31/97 3.6 5.573 21 9/15/97 3.142 4.864 4
8/1/97 2.928 4.533 8 9/16/97 3.794 5.873 76
8/2/97 2.348 3.635 8 9/17/97 3.65 5.650 64
Final Fecal Coliform TMDL for Rocky River
45
Date MGD CFS Effluent FC Conc Date MGD CFS Effluent FC Conc
9/18/97 3.643 5.639 255 11/3/97 3.083 4.772 108
9/19/97 3.09 4.783 90 11/4/97 2.852 4.415 50
9/20/97 2.301 3.562 54 11/5/97 3.111 4.816 24
9/21/97 1.765 2.732 54 11/6/97 2.866 4.437 118
9/22/97 3.325 5.147 2 11/7/97
9/23/97 3.48 5.387 220 11/8/97 1.964 3.040 34
9/24/97 3.791 5.868 4 11/9/97 2.579 3.992 112
9/25/97 3.487 5.398 12 11/10/97 2.951 4.568 118
9/26/97 3.09 4.783 31 11/11/97 3.303 5.113 120
9/27/97 2.353 3.642 15 11/12/97 4.171 6.457 145
9/28/97 1.953 3.023 15 11/13/97 2.567 3.974 98
9/29/97 3.239 5.014 9 11/14/97 2.098 3.248 118
9/30/97 3.576 5.536 590 11/15/97 1.67 2.585 118
10/1/97 3.483 5.392 13 11/16/97 2.428 3.759 5
10/2/97 3.2 4.954 41 11/17/97 2.72 4.211 850
10/3/97 2.78 4.303 14 11/18/97 2.442 3.780 220
10/4/97 2.158 3.341 20 11/19/97 2.922 4.523 48
10/5/97 1.979 3.063 20 11/20/97 3.484 5.393 98
10/6/97 3.558 5.508 10 11/21/97 2.419 3.745 85
10/7/97 3.702 5.731 230 11/22/97 1.647 2.550 85
10/8/97 3.596 5.567 16 11/23/97 2.608 4.037 16
10/9/97 3.254 5.037 29 11/24/97 2.737 4.237 143
10/10/97 2.572 3.981 350 11/25/97 3.347 5.181 380
10/11/97 2.109 3.265 52 11/26/97 2.161 3.345 95
10/12/97 1.983 3.070 52 11/27/97 2.366 3.663 95
10/13/97 2.925 4.528 18 11/28/97 1.566 2.424 95
10/14/97 3.739 5.788 113 11/29/97 1.977 3.060 95
10/15/97 3.256 5.040 94 11/30/97 2.816 4.359 13
10/16/97 3.33 5.155 40 12/1/97 2.733 4.231 56
10/17/97 2.751 4.259 94 12/2/97 2.898 4.486 31
10/18/97 2.39 3.700 59 12/3/97 2.791 4.320 31
10/19/97 2.712 4.198 59 12/4/97 2.485 3.847 118
10/20/97 2.747 4.252 2 12/5/97 1.947 3.014 38
10/21/97 3.162 4.895 2 12/6/97 1.441 2.231 38
10/22/97 3.21 4.969 2 12/7/97 2.465 3.816 6
10/23/97 3.13 4.845 2 12/8/97 2.881 4.460 21
10/24/97 2.391 3.701 16 12/9/97 3.031 4.692 17
10/25/97 3.241 5.017 3 12/10/97 2.803 4.339 2
10/26/97 2.071 3.206 3 12/11/97 3.105 4.807 12
10/27/97 2.81 4.350 44 12/12/97 2.275 3.522 9
10/28/97 3.414 5.285 525 12/13/97 1.66 2.570 9
10/29/97 3.453 5.345 7 12/14/97 2.658 4.115 2
10/30/97 3.396 5.257 6 12/15/97 2.757 4.268 72
10/31/97 2.836 4.390 26 12/16/97 2.981 4.615 50
11/1/97 1.803 2.791 34 12/17/97 2.929 4.534 6300
11/2/97 3.094 4.789 3 12/18/97 2.754 4.263 44
Final Fecal Coliform TMDL for Rocky River
46
Date MGD CFS Effluent FC Conc Date MGD CFS Effluent FC Conc
12/19/97 2.152 3.331 72 2/3/98 4.414 6.833 4
12/20/97 2.039 3.156 72 2/4/98 4.199 6.500 28
12/21/97 2.767 4.283 14 2/5/98 3.277 5.073 5
12/22/97 2.521 3.902 13 2/6/98 3.846 5.954 134
12/23/97 2.074 3.211 23 2/7/98 2.053 3.178 6
12/24/97 2.649 4.101 18 2/8/98 2.032 3.146 6
12/25/97 1.677 2.596 18 2/9/98 2.566 3.972 2
12/26/97 1.671 2.587 18 2/10/98 3.221 4.986 3
12/27/97 2.357 3.649 18 2/11/98 3.291 5.094 36
12/28/97 1.791 2.772 18 2/12/98 3.533 5.469 3
12/29/97 2.081 3.221 8 2/13/98 2.3 3.560 6
12/30/97 1.929 2.986 2 2/14/98 1.907 2.952 6
12/31/97 2.157 3.339 12 2/15/98 4.21 6.517 3
1/1/98 2.458 3.805 48 2/16/98 4.859 7.522 15
1/2/98 2.328 3.604 22 2/17/98 3.258 5.043 2
1/3/98 2.236 3.461 22 2/18/98 3.089 4.782 8
1/4/98 1.782 2.759 2 2/19/98 2.781 4.305 12
1/5/98 2.888 4.471 4 2/20/98 1.88 2.910 40
1/6/98 3.167 4.902 2 2/21/98 2.036 3.152 40
1/7/98 5.852 9.059 24 2/22/98 3.109 4.813 13
1/8/98 6.571 10.172 13 2/23/98 3.356 5.195 100
1/9/98 2.865 4.435 22 2/24/98 3.427 5.305 110
1/10/98 2.004 3.102 22 2/25/98 3.134 4.851 18
1/11/98 1.86 2.879 45 2/26/98 3.167 4.902 40
1/12/98 2.618 4.053 2 2/27/98 2.103 3.255 40
1/13/98 2.708 4.192 12 2/28/98 1.747 2.704 23
1/14/98 2.803 4.339 24 3/1/98 3.064 4.743 8
1/15/98 3.497 5.413 2 3/2/98 3.112 4.817 7
1/16/98 3.431 5.311 22 3/3/98 3.3 5.108 34
1/17/98 2.016 3.121 22 3/4/98 2.833 4.385 40
1/18/98 1.745 2.701 88 3/5/98 2.892 4.477 78
1/19/98 4.732 7.325 28 3/6/98 2.24 3.467 34
1/20/98 3.365 5.209 2 3/7/98 4.058 6.282 34
1/21/98 3.004 4.650 18 3/8/98 4.442 6.876 8
1/22/98 2.712 4.198 22 3/9/98 3.309 5.122 66
1/23/98 3.362 5.204 22 3/10/98 3.055 4.729 104
1/24/98 2.279 3.528 2 3/11/98 2.935 4.543 42
1/25/98 2.069 3.203 2 3/12/98 2.641 4.088 21
1/26/98 2.757 4.268 2 3/13/98 2.541 3.933 22
1/27/98 4.668 7.226 40 3/14/98 2.201 3.407 22
1/28/98 3.702 5.731 750 3/15/98 2.634 4.077 10
1/29/98 3.415 5.286 22 3/16/98 3.001 4.646 31
1/30/98 2.832 4.384 22 3/17/98 3.39 5.248 42
1/31/98 1.9 2.941 3/18/98 3.614 5.594 68
2/1/98 1.764 2.731 11 3/19/98 3.231 5.002 6
2/2/98 2.794 4.325 2 3/20/98 2.082 3.223 14
Final Fecal Coliform TMDL for Rocky River
47
3/21/98 1.945 3.011 14
3/22/98 2.824 4.372 4 5/7/98 3.974 6.152 22
3/23/98 3.263 5.051 42 5/8/98 3.021 4.676 10
3/24/98 3.109 4.813 5 5/9/98 2.346 3.632 9
3/25/98 3.347 5.181 26 5/10/98 1.974 3.056 9
3/26/98 3.216 4.978 27 5/11/98 3.135 4.853 16
3/27/98 2.329 3.605 6 5/12/98 3.738 5.786 2
3/28/98 2.194 3.396 6 5/13/98 3.295 5.101 82
3/29/98 2.949 4.565 4 5/14/98 3.473 5.376 6
3/30/98 3.428 5.307 8 5/15/98 3.277 5.073 4
3/31/98 3.407 5.274 26 5/16/98 2.372 3.672 28
4/1/98 3.243 5.020 27 5/17/98 2.064 3.195 28
4/2/98 3.001 4.646 53 5/18/98 3.374 5.223 2
4/3/98 2.062 3.192 33.3 5/19/98 3.479 5.385 10
4/4/98 1.66 2.570 33.3 5/20/98 3.748 5.802 18
4/5/98 3.759 5.819 150 5/21/98 3.5 5.418 164
4/6/98 2.798 4.331 10 5/22/98 2.851 4.413 280
4/7/98 3.131 4.847 10 5/23/98 2.124 3.288 15
4/8/98 3.733 5.779 2 5/24/98 2.2 3.406 15
4/9/98 3.671 5.683 11 5/25/98 3.122 4.833 12
4/10/98 2.547 3.943 8 5/26/98 4.376 6.774 16
4/11/98 2.178 3.372 8 5/27/98
4/12/98 1.901 2.943 8 5/28/98 3.916 6.062 16
4/13/98 2.831 4.382 10 5/29/98 3.006 4.653 16
4/14/98 2.951 4.568 10 5/30/98 2.5 3.870 16
4/15/98 3.6 5.573 74 5/31/98 3.604 5.579 2
4/16/98 3.457 5.351 13 6/1/98 3.771 5.837 70
4/17/98 4.029 6.237 26 6/2/98 3.708 5.740 26
4/18/98 2.667 4.128 19 6/3/98 3.469 5.370 14
4/19/98 3.502 5.421 19 6/4/98 3.209 4.967 34
4/20/98 3.51 5.433 6 6/5/98 2.425 3.754 18
4/21/98 3.596 5.567 25 6/6/98 2.177 3.370 18
4/22/98 3.456 5.350 60 6/7/98 3.013 4.664 2
4/23/98 2.798 4.331 11 6/8/98 3.379 5.231 64
4/24/98 2.959 4.580 12 6/9/98 4.843 7.497 60
4/25/98 2.093 3.240 16 6/10/98 3.927 6.079 22
4/26/98 2.072 3.207 16 6/11/98 3.222 4.988 10
4/27/98 3.059 4.735 2 6/12/98 2.729 4.224 18
4/28/98 3.384 5.238 12 6/13/98 2.196 3.399 18
4/29/98 3.241 5.017 22 6/14/98 3.392 5.251 12
4/30/98 3.193 4.943 28 6/15/98 3.661 5.667 16
5/1/98 2.939 4.550 104 6/16/98 3.978 6.158 16
5/2/98 2.227 3.447 24 6/17/98 3.69 5.712 59
5/3/98 2.182 3.378 24 6/18/98 3.319 5.138 2200
5/4/98 2.943 4.556 40 6/19/98 2.786 4.313 32
5/5/98 3.44 5.325 44 6/20/98 2.136 3.307 32
5/6/98 3.322 5.142 20 6/21/98 3.643 5.639 10
Final Fecal Coliform TMDL for Rocky River
48
Date MGD CFS Effluent FC Conc Date MGD CFS Effluent FC Conc
6/22/98 3.876 6.000 53 8/7/98 3.635 5.627 4
6/23/98 4.296 6.650 160 8/8/98 2.813 4.354 2
6/24/98 3.865 5.983 52 8/9/98 2.488 3.851 2
6/25/98 3.82 5.913 54 8/10/98 3.381 5.234 2
6/26/98 2.421 3.748 47 8/11/98 3.885 6.014 2
6/27/98 2.57 3.978 47 8/12/98 3.983 6.166 2
6/28/98 2.607 4.036 40 8/13/98 3.54 5.480 2
6/29/98 2.845 4.404 2 8/14/98 3.063 4.741 2
6/30/98 2.277 3.525 8 8/15/98 2.951 4.568 2
7/1/98 2.44 3.777 2 8/16/98 2.26 3.498 2
7/2/98 2.387 3.695 2 8/17/98 3.651 5.652 2
7/3/98 2.323 3.596 3 8/18/98 3.589 5.556 2
7/4/98 2.25 3.483 3 8/19/98 3.906 6.046 2
7/5/98 3.03 4.690 3 8/20/98 3.419 5.293 2
7/6/98 3.847 5.955 22 8/21/98 3.139 4.859 2
7/7/98 3.601 5.574 12 8/22/98 2.687 4.159 2
7/8/98 3.8 5.882 62 8/23/98 2.275 3.522 2
7/9/98 3.501 5.420 16 8/24/98 3.725 5.766 28
7/10/98 3.119 4.828 22 8/25/98 3.88 6.006 4
7/11/98 2.525 3.909 22 8/26/98 4.188 6.483 6
7/12/98 3.4 5.263 6 8/27/98 4.15 6.424 2
7/13/98 3.544 5.486 120 8/28/98 3.626 5.613 2
7/14/98 4.172 6.458 1700 8/29/98 3.273 5.067 5
7/15/98 3.578 5.539 3400 8/30/98 2.503 3.875 5
7/16/98 3.983 6.166 600 8/31/98 3.684 5.703 2
7/17/98 2.97 4.598 300 9/1/98 3.811 5.899 2
7/18/98 3.286 5.087 2 9/2/98 3.958 6.127 2
7/19/98 2.822 4.368 300 9/3/98 3.922 6.071 4
7/20/98 3.367 5.212 20 9/4/98 3.601 5.574 4
7/21/98 3.669 5.680 12 9/5/98 2.445 3.785 3
7/22/98 4.319 6.686 22 9/6/98 2.181 3.376 3
7/23/98 3.82 5.913 62 9/7/98 3.073 4.757 3
7/24/98 3.635 5.627 2 9/8/98 3.492 5.406 6
7/25/98 3.328 5.152 15 9/9/98 3.308 5.121 20
7/26/98 2.456 3.802 15 9/10/98 3.321 5.141 2
7/27/98 3.375 5.224 2 9/11/98 3.056 4.731 5
7/28/98 4.208 6.514 6 9/12/98 2.643 4.091 5
7/29/98 3.978 6.158 2 9/13/98 3.744 5.796 2
7/30/98 3.547 5.491 2 9/14/98 3.933 6.088 2
7/31/98 3.181 4.924 2 9/15/98 3.822 5.916 2
8/1/98 2.609 4.039 5 9/16/98 4 6.192 2
8/2/98 2.204 3.412 5 9/17/98 3.509 5.432 10
8/3/98 3.202 4.957 2 9/18/98 2.951 4.568 3
8/4/98 3.869 5.989 2 9/19/98 2.467 3.819 3
8/5/98 3.695 5.720 2 9/20/98 3.159 4.890 2
8/6/98 3.405 5.271 66 9/21/98 3.319 5.138 10
Final Fecal Coliform TMDL for Rocky River
49
Date MGD CFS Effluent FC Conc Date MGD CFS Effluent FC Conc
9/22/98 3.268 5.059 2 11/7/98 2.04 3.158 29
9/23/98 3.315 5.132 2 11/8/98 0.601 0.930 229
9/24/98 3.223 4.989 24 11/9/98 0 0.000 29
9/25/98 2.747 4.252 5 11/10/98 3.224 4.991 30
9/26/98 2.49 3.854 5 11/11/98 3.171 4.909 57
9/27/98 3.564 5.517 2 11/12/98 3.146 4.870 69
9/28/98 3.979 6.159 18 11/13/98 2.628 4.068 90
9/29/98 3.662 5.669 50 11/14/98 2.356 3.647 75
9/30/98 4.03 6.238 2 11/15/98 1.926 2.981 75
10/1/98 3.399 5.262 2 11/16/98 3.318 5.136 18
10/2/98 2.8 4.334 2 11/17/98 3.159 4.890 360
10/3/98 2.277 3.525 2 11/18/98 2.922 4.523 98
10/4/98 3.451 5.342 2 11/19/98 2.786 4.313 102
10/5/98 3.674 5.687 10 11/20/98 2.775 4.296 38
10/6/98 3.896 6.031 2 11/21/98 1.994 3.087 76
10/7/98 3.596 5.567 12 11/22/98 1.868 2.892 76
10/8/98 2.97 4.598 86 11/23/98 2.257 3.494 116
10/9/98 2.296 3.554 8 11/24/98 2.433 3.766 163
10/10/98 2.343 3.627 8 11/25/98 2.218 3.433 90
10/11/98 3.398 5.260 2 11/26/98 1.624 2.514 119
10/12/98 3.71 5.743 54 11/27/98 1.74 2.693 119
10/13/98 3.728 5.771 2 11/28/98 1.578 2.443 119
10/14/98 3.283 5.082 2 11/29/98 1.865 2.887 119
10/15/98 2.861 4.429 32 11/30/98 2.73 4.226 2
10/16/98 2.206 3.415 7 12/1/98 3.274 5.068 2
10/17/98 1.984 3.071 7 12/2/98 3.259 5.045 310
10/18/98 3.613 5.593 2 12/3/98 3.117 4.825 230
10/19/98 3.24 5.015 12 12/4/98 2.621 4.057 2
10/20/98 3.388 5.245 28 12/5/98 2.171 3.361 23
10/21/98 3.261 5.048 8 12/6/98 2.047 3.169 23
10/22/98 2.744 4.248 140 12/7/98 3.26 5.046 16
10/23/98 2.359 3.652 15 12/8/98 3.035 4.698 12
10/24/98 1.929 2.986 15 12/9/98 2.635 4.079 2
10/25/98 3.021 4.676 25 12/10/98 2.827 4.376 2
10/26/98 3.218 4.981 22 12/11/98 2.864 4.433 4
10/27/98 3.617 5.599 66 12/12/98 2.364 3.659 5
10/28/98 3.749 5.803 74 12/13/98 2.306 3.570 5
10/29/98 3.12 4.830 90 12/14/98 2.407 3.726 8
10/30/98 2.188 3.387 2 12/15/98 3.387 5.243 20
10/31/98 2.178 3.372 48 12/16/98 4.325 6.695 47
11/1/98 2.119 3.280 29 12/17/98 2.897 4.485 4
11/2/98 3.299 5.107 2 12/18/98 2.8 4.334 12
11/3/98 3.217 4.980 74 12/19/98 2.205 3.413 13
11/4/98 2.851 4.413 54 12/20/98 1.802 2.789 13
11/5/98 2.833 4.385 30 12/21/98 2.17 3.359 2
11/6/98 2.567 3.974 78 12/22/98 1.809 2.800 2
Final Fecal Coliform TMDL for Rocky River
50
Date MGD CFS Effluent FC Conc Date MGD CFS Effluent FC Conc
12/23/98 2.98 4.613 2 2/7/99 2.947 4.562 2
12/24/98 1.463 2.265 2 2/8/99 3.122 4.833 8
12/25/98 1.495 2.314 2 2/9/99 2.836 4.390 2
12/26/98 1.499 2.320 2 2/10/99 3.056 4.731 6
12/27/98 1.907 2.952 2 2/11/99 2.984 4.619 2
12/28/98 1.814 2.808 2 2/12/99
12/29/98 1.691 2.618 2 2/13/99
12/30/98 1.708 2.644 2 2/14/99 1.679 2.599 4
12/31/98 1.705 2.639 2 2/15/99 2.821 4.367 2
1/1/99 2.254 3.489 2 2/16/99 2.938 4.548 8
1/2/99 2.24 3.467 2 2/17/99 3.095 4.791 6
1/3/99 2.443 3.782 2 2/18/99 2.869 4.441 8
1/4/99 2.844 4.402 2 2/19/99 3.694 5.718 4
1/5/99 3.111 4.816 2 2/20/99 2.51 3.885 5
1/6/99 3.138 4.858 24 2/21/99 1.803 2.791 5
1/7/99 2.453 3.797 6 2/22/99 2.769 4.286 10
1/8/99 1.983 3.070 7 2/23/99 3.194 4.944 2
1/9/99 1.808 2.799 7 2/24/99 3.207 4.964 4
1/10/99 2.534 3.923 2 2/25/99 3.097 4.794 16
1/11/99 2.569 3.977 2 2/26/99 2.602 4.028 8
1/12/99 3.012 4.663 2 2/27/99 2.315 3.584 6
1/13/99 3.349 5.184 2 2/28/99 2.047 3.169 6
1/14/99 3.014 4.666 1600 3/1/99 2.89 4.474 2
1/15/99 2.117 3.277 7 3/2/99 3.069 4.751 2
1/16/99 1.945 3.011 7 3/3/99 3.034 4.697 2
1/17/99 3.404 5.269 7 3/4/99 3.301 5.110 6
1/18/99 3.472 5.375 33 3/5/99 2.641 4.088 2
1/19/99 3.153 4.881 4 3/6/99 2.185 3.382 3
1/20/99 2.676 4.142 8 3/7/99 2.025 3.135 3
1/21/99 2.906 4.498 2 3/8/99 2.66 4.118 10
1/22/99 3.333 5.159 7 3/9/99 2.988 4.625 6
1/23/99 3.237 5.011 7 3/10/99 2.937 4.546 12
1/24/99 3.426 5.303 2 3/11/99 2.774 4.294 12
1/25/99 2.79 4.319 8 3/12/99 2.403 3.720 4
1/26/99 3.341 5.172 14 3/13/99 2.248 3.480 8
1/27/99 3.238 5.012 16 3/14/99 3.787 5.862 8
1/28/99 2.806 4.344 10 3/15/99 3.089 4.782 2
1/29/99 1.967 3.045 8 3/16/99 3.037 4.701 10
1/30/99 1.783 2.760 8 3/17/99 3.268 5.059 2
1/31/99 3.177 4.918 2 3/18/99 3.152 4.879 4
2/1/99 3/19/99 2.742 4.245 8
2/2/99 3/20/99 2.41 3.731 4
2/3/99 3.391 5.249 2 3/21/99 2.269 3.512 4
2/4/99 2.99 4.628 8 3/22/99 2.811 4.351 2
2/5/99 2.448 3.789 2 3/23/99 3.381 5.234 2
2/6/99 2.271 3.515 2 3/24/99 3.562 5.514 2
Final Fecal Coliform TMDL for Rocky River
51
Date MGD CFS Effluent FC Conc Date MGD CFS Effluent FC Conc
3/25/99 3.38 5.232 4 5/10/99 3.027 4.686 2
3/26/99 2.845 4.404 4 5/11/99 3.371 5.218 2
3/27/99 2.238 3.464 3 5/12/99 3.299 5.107 2
3/28/99 2.17 3.359 2 5/13/99 2.99 4.628 2
3/29/99 2.795 4.327 2 5/14/99 2.36 3.653 2
3/30/99 3.342 5.173 2 5/15/99 2.285 3.537 2
3/31/99 2.903 4.494 2 5/16/99 3.088 4.780 2
4/1/99 3.237 5.011 2 5/17/99 3.728 5.771 4
4/2/99 2.626 4.065 2 5/18/99 3.078 4.765 2
4/3/99 2.355 3.646 2 5/19/99 3.024 4.681 6
4/4/99 2.197 3.401 2 5/20/99 3.265 5.054 4
4/5/99 2.912 4.508 2 5/21/99 2.791 4.320 3
4/6/99 3.435 5.317 8 5/22/99 2.299 3.559 3
4/7/99 3.104 4.805 22 5/23/99 2.887 4.469 2
4/8/99 3.071 4.754 18 5/24/99 3.137 4.856 2
4/9/99 2.519 3.899 7 5/25/99 3.003 4.649 12
4/10/99 2.382 3.687 7 5/26/99 2.333 3.611 5
4/11/99 3.144 4.867 2 5/27/99 3.315 5.132 22
4/12/99 3.403 5.268 10 5/28/99 2.813 4.354 46
4/13/99 3.525 5.457 4 5/29/99 2.321 3.593 9
4/14/99 3.11 4.814 32 5/30/99 2.304 3.567 9
4/15/99 2.843 4.401 68 5/31/99 2.269 3.512 9
4/16/99 2.227 3.447 11 6/1/99 2.884 4.464 2
4/17/99 2.076 3.214 11 6/2/99 3.099 4.797 2
4/18/99 3.136 4.854 4 6/3/99 3.214 4.975 4
4/19/99 2.983 4.618 31 6/4/99 3.428 5.307 2
4/20/99 3.176 4.916 22 6/5/99 2.656 4.111 2
4/21/99 3.314 5.130 10 6/6/99 2.471 3.825 2
4/22/99 3.48 5.387 12 6/7/99 2.832 4.384 2
4/23/99 2.779 4.302 13 6/8/99 2.862 4.430 2
4/24/99 2.322 3.594 13 6/9/99 2.849 4.410 2
4/25/99 3.042 4.709 10 6/10/99 3.521 5.450 2
4/26/99 4.122 6.381 14 6/11/99 3.211 4.971 2
4/27/99 3.495 5.410 10 6/12/99 2.591 4.011 2
4/28/99 4.19 6.486 6 6/13/99 2.363 3.658 2
4/29/99 4.681 7.246 52 6/14/99 3.004 4.650 2
4/30/99 2.8 4.334 10 6/15/99 3.024 4.681 2
5/1/99 2.586 4.003 10 6/16/99 3.246 5.025 2
5/2/99 3.138 4.858 20 6/17/99 3.043 4.711 6
5/3/99 3.142 4.864 22 6/18/99 2.874 4.449 2
5/4/99 3.028 4.687 6 6/19/99 2.611 4.042 3
5/5/99 3.313 5.128 4 6/20/99 2.102 3.254 3
5/6/99 3.125 4.837 10 6/21/99 2.509 3.884 12
5/7/99 2.471 3.825 10 6/22/99 3.104 4.805 2
5/8/99 2.599 4.023 10 6/23/99 2.914 4.511 600
5/9/99 2.992 4.632 2 6/24/99 3.261 5.048 2
Final Fecal Coliform TMDL for Rocky River
52
Date MGD CFS Effluent FC Conc Date MGD CFS Effluent FC Conc
6/25/99 3.13 4.845 2 8/10/99 3.031 4.692 2
6/26/99 2.687 4.159 9 8/11/99 3.035 4.698 4
6/27/99 2.497 3.865 9 8/12/99 2.693 4.169 2
6/28/99 3.082 4.771 2 8/13/99 2.639 4.085 2
6/29/99 3.09 4.783 2 8/14/99 2.453 3.797 2
6/30/99 2.909 4.503 2 8/15/99 3.247 5.026 2
7/1/99 3.303 5.113 2 8/16/99 3.204 4.960 2
7/2/99 2.853 4.416 2 8/17/99 2.971 4.599 2
7/3/99 2.568 3.975 2 8/18/99 3.061 4.738 2
7/4/99 2.178 3.372 2 8/19/99 2.662 4.121 2
7/5/99 2.447 3.788 2 8/20/99 2.463 3.813 2
7/6/99 2.858 4.424 2 8/21/99 2.247 3.478 2
7/7/99 2.918 4.517 2 8/22/99 2.874 4.449 2
7/8/99 2.722 4.214 2 8/23/99 3.4 5.263 2
7/9/99 3.127 4.841 2 8/24/99 3.2 4.954 4
7/10/99 2.437 3.772 2 8/25/99 2.88 4.458 2
7/11/99 2.269 3.512 2 8/26/99 2.528 3.913 2
7/12/99 2.852 4.415 2 8/27/99 2.536 3.926 2
7/13/99 2.653 4.107 62 8/28/99 2.478 3.836 2
7/14/99 2.838 4.393 2 8/29/99 2.738 4.238 2
7/15/99 2.962 4.585 2 8/30/99 2.65 4.102 2
7/16/99 2.841 4.398 4 8/31/99 2.681 4.150 2
7/17/99 2.81 4.350 2 9/1/99 2.919 4.519 10
7/18/99 3.306 5.118 5 9/2/99 2.634 4.077 4
7/19/99 3.377 5.228 2 9/3/99 2.586 4.003 4
7/20/99 3.124 4.836 2 9/4/99 2.301 3.562 4
7/21/99 3.154 4.882 2 9/5/99 2.427 3.757 4
7/22/99 3.148 4.873 2 9/6/99 2.592 4.012 2
7/23/99 2.998 4.641 2 9/7/99 2.068 3.201 2
7/24/99 2.323 3.596 2 9/8/99
7/25/99 3.239 5.014 1 9/9/99 2.968 4.594 4
7/26/99 3.138 4.858 1 9/10/99 2499 3868.421 22
7/27/99 3.152 4.879 2 9/11/99 2.411 3.732 4
7/28/99 2.877 4.454 2 9/12/99 2.192 3.393 4
7/29/99 3.021 4.676 2 9/13/99 2.536 3.926 20
7/30/99 2.714 4.201 2 9/14/99 2.825 4.373 10
7/31/99 2.678 4.146 2 9/15/99 2.729 4.224 25
8/1/99 3.219 4.983 2 9/16/99 2.682 4.152 12
8/2/99 3.228 4.997 2 9/17/99 2.367 3.664 8
8/3/99 2.873 4.447 2 9/18/99 2.233 3.457 3
8/4/99 2.824 4.372 2 9/19/99 2.024 3.133 13
8/5/99 2.752 4.260 2 9/20/99 2.875 4.450 2
8/6/99 2.825 4.373 2 9/21/99 2.717 4.206 2
8/7/99 2.426 3.755 2 9/22/99 2.733 4.231 2
8/8/99 3.061 4.738 2 9/23/99 2.534 3.923 4
8/9/99 3.299 5.107 2 9/24/99 2.345 3.630 2
Final Fecal Coliform TMDL for Rocky River
53
Date MGD CFS Effluent FC Conc Date MGD CFS Effluent FC Conc
9/25/99 2.132 3.300 2 11/10/99 2.712 4.198 2
9/26/99 2.331 3.608 2 11/11/99 2.072 3.207 2
9/27/99 2.949 4.565 2 11/12/99 2.008 3.108 3
9/28/99 2.767 4.283 2 11/13/99 2.208 3.418 3
9/29/99 3.09 4.783 2 11/14/99 2.04 3.158 2
9/30/99 2.495 3.862 2 11/15/99 2.34 3.622 2
10/1/99 2.562 3.966 2 11/16/99 2.488 3.851 2
10/2/99 2.256 3.492 2 11/17/99 2.531 3.918 2
10/3/99 2.291 3.546 2 11/18/99 2.199 3.404 2
10/4/99 2.697 4.175 2 11/19/99 2.024 3.133 2
10/5/99 2.6 4.025 2 11/20/99 2.391 3.701 2
10/6/99 2.615 4.048 2 11/21/99 2.574 3.985 2
10/7/99 2.484 3.845 4 11/22/99 2.663 4.122 2
10/8/99 2.32 3.591 2 11/23/99 2.522 3.904 4
10/9/99 2.535 3.924 2 11/24/99 2.125 3.289 2
10/10/99 2.545 3.940 2 11/25/99 2.291 3.546 2
10/11/99 4.374 6.771 2 11/26/99 1.866 2.889 2
10/12/99 2.607 4.036 2 11/27/99 2.407 3.726 2
10/13/99 2.615 4.048 2 11/28/99 2.375 3.676 2
10/14/99 2.645 4.094 28 11/29/99 2.301 3.562 2
10/15/99 2.538 3.929 3 11/30/99 2.433 3.766 2
10/16/99 2.344 3.628 3 12/1/99 2.461 3.810 2
10/17/99 2.249 3.481 2 12/2/99 2.199 3.404 2
10/18/99 2.523 3.906 2 12/3/99 2.305 3.568 2
10/19/99 2.41 3.731 12 12/4/99 2.229 3.450 2
10/20/99 3.057 4.732 8 12/5/99 2.639 4.085 2
10/21/99 4.093 6.336 2 12/6/99 2.43 3.762 2
10/22/99 2.353 3.642 4 12/7/99 2.454 3.799 4
10/23/99 2.005 3.104 4 12/8/99 2.815 4.358 2
10/24/99 2.003 3.101 2 12/9/99 2.416 3.740 2
10/25/99 2.184 3.381 10 12/10/99 2.081 3.221 2
10/26/99 2.37 3.669 2 12/11/99 1.923 2.977 2
10/27/99 2.672 4.136 4 12/12/99 2.6 4.025 8
10/28/99 2.389 3.698 2 12/13/99 3.045 4.714 14
10/29/99 2.422 3.749 2 12/14/99 2.999 4.642 2
10/30/99 2.472 3.827 2 12/15/99 2.546 3.941 6
10/31/99 2.379 3.683 4 12/16/99 2.149 3.327 2
11/1/99 2.769 4.286 2 12/17/99 2.19 3.390 5
11/2/99 2.291 3.546 2 12/18/99 1.961 3.036 5
11/3/99 2.202 3.409 2 12/19/99 2.327 3.602 2
11/4/99 2.213 3.426 2 12/20/99 2.32 3.591 2
11/5/99 1.943 3.008 2 12/21/99 2.684 4.155 2
11/6/99 1.905 2.949 2 12/22/99 2.168 3.356 2
11/7/99 2.491 3.856 2 12/23/99 1.929 2.986 2
11/8/99 2.53 3.916 2 12/24/99 1.838 2.845 2
11/9/99 2.444 3.783 6 12/25/99 1.747 2.704 2
Final Fecal Coliform TMDL for Rocky River
54
Date MGD CFS Effluent FC Conc Date MGD CFS Effluent FC Conc
12/26/99 1.752 2.712 2 2/10/00 2.506 3.879 2
12/27/99 1.855 2.872 2 2/11/00 2.61 4.040 2
12/28/99 1.948 3.015 2 2/12/00 2.51 3.885 2
12/29/99 1.891 2.927 4 2/13/00 2.883 4.463 2
12/30/99 1.773 2.745 2 2/14/00 2.52 3.901 2
12/31/99 2.056 3.183 2 2/15/00 2.549 3.946 2
1/1/00 1.886 2.920 2 2/16/00 2.282 3.533 2
1/2/00 1.913 2.961 2 2/17/00 2.162 3.347 2
1/3/00 2.572 3.981 2 2/18/00 2.242 3.471 2
1/4/00 2.635 4.079 2 2/19/00 1.831 2.834 2
1/5/00 2.127 3.293 2 2/20/00 2.433 3.766 2
1/6/00 2.053 3.178 2 2/21/00 2.352 3.641 2
1/7/00 1.985 3.073 2 2/22/00 2.233 3.457 2
1/8/00 2.084 3.226 2 2/23/00 2.424 3.752 2
1/9/00 2.056 3.183 2 2/24/00 2.349 3.636 2
1/10/00 3.447 5.336 2 2/25/00 2.347 3.633 2
1/11/00 2.319 3.590 2 2/26/00 2.069 3.203 2
1/12/00 2.58 3.994 2 2/27/00 2.342 3.625 2
1/13/00 2.431 3.763 8 2/28/00 2.316 3.585 2
1/14/00 1.985 3.073 33 2/29/00 2.206 3.415 2
1/15/00 1.78 2.755 5 3/1/00 2.377 3.680 2
1/16/00 1.855 2.872 5 3/2/00 2.041 3.159 2
1/17/00 2.003 3.101 5 3/3/00 1.988 3.077 2
1/18/00 2.156 3.337 2 3/4/00 2.126 3.291 2
1/19/00 2.249 3.481 2 3/5/00 2.349 3.636 2
1/20/00 2.276 3.523 4 3/6/00 2.423 3.751 2
1/21/00 1.787 2.766 2 3/7/00 2.288 3.542 2
1/22/00 1.842 2.851 2 3/8/00 2.6 4.025 2
1/23/00 1.671 2.587 2 3/9/00 2.306 3.570 2
1/24/00 2.054 3.180 2 3/10/00 2.38 3.684 2
1/25/00 2.289 3.543 2 3/11/00 1.951 3.020 2
1/26/00 2.26 3.498 2 3/12/00 1.956 3.028 2
1/27/00 2.086 3.229 2 3/13/00 2.376 3.678 10
1/28/00 1.842 2.851 2 3/14/00 2.352 3.641 2
1/29/00 1.956 3.028 2 3/15/00 3.019 4.673 2
1/30/00 2.199 3.404 2 3/16/00 2.65 4.102 2
1/31/00 2.372 3.672 2 3/17/00 2.101 3.252 2
2/1/00 2.278 3.526 2 3/18/00 1.921 2.974 2
2/2/00 2.117 3.277 2 3/19/00 3.213 4.974 2
2/3/00 2.479 3.837 2 3/20/00 3.204 4.960 2
2/4/00 2.066 3.198 2 3/21/00 2.635 4.079 2
2/5/00 1.954 3.025 2 3/22/00 2.34 3.622 2
2/6/00 2.047 3.169 2 3/23/00 2.123 3.286 2
2/7/00 2.367 3.664 2 3/24/00 2.392 3.703 2
2/8/00 2.193 3.395 2 3/25/00 2.315 3.584 2
2/9/00 2.447 3.788 2 3/26/00 2.227 3.447 2
Final Fecal Coliform TMDL for Rocky River
55
Date MGD CFS Effluent FC Conc Date MGD CFS Effluent FC Conc
3/27/00 2.315 3.584 2 5/12/00 2.763 4.277 2
3/28/00 2.227 3.447 2 5/13/00 2.305 3.568 2
3/29/00 2.438 3.774 2 5/14/00 2.35 3.638 2
3/30/00 2.178 3.372 2 5/15/00 2.141 3.314 2
3/31/00 2.325 3.599 2 5/16/00 2.647 4.098 2
4/1/00 2.215 3.429 2 5/17/00 2.716 4.204 2
4/2/00 2.617 4.051 8 5/18/00 2.586 4.003 4
4/3/00 2.659 4.116 2 5/19/00 2.786 4.313 2
4/4/00 2.479 3.837 2 5/20/00 2.561 3.964 2
4/5/00 2.191 3.392 2 5/21/00 2.233 3.457 2
4/6/00 2.542 3.935 2 5/22/00 2.562 3.966 2
4/7/00 2.379 3.683 2 5/23/00 2.501 3.872 2
4/8/00 2.291 3.546 2 5/24/00 2.542 3.935 32
4/9/00 2.087 3.231 2 5/25/00 2.538 3.929 2
4/10/00 2.374 3.675 2 5/26/00 2.739 4.240 5
4/11/00 2.552 3.950 2 5/27/00 2.199 3.404 5
4/12/00 2.644 4.093 2 5/28/00 2.548 3.944 5
4/13/00 2.139 3.311 2 5/29/00 2.394 3.706 2
4/14/00 2.143 3.317 2 5/30/00 2.434 3.768 2
4/15/00 2.844 4.402 2 5/31/00 2.713 4.200 2
4/16/00 2.188 3.387 2 6/1/00 2.641 4.088 2
4/17/00 2.447 3.788 2 6/2/00 2.462 3.811 2
4/18/00 2.433 3.766 2 6/3/00 2.234 3.458 2
4/19/00 2.328 3.604 2 6/4/00 2.881 4.460 2
4/20/00 2.422 3.749 2 6/5/00 2.437 3.772 2
4/21/00 2.239 3.466 2 6/6/00 2.617 4.051 2
4/22/00 1.847 2.859 2 6/7/00 2.307 3.571 2
4/23/00 1.948 3.015 2 6/8/00 2.673 4.138 2
4/24/00 2.486 3.848 2 6/9/00 2.368 3.666 2
4/25/00 2.34 3.622 2 6/10/00 2.278 3.526 2
4/26/00 2.426 3.755 2 6/11/00 2.662 4.121 2
4/27/00 2.138 3.310 2 6/12/00 2.642 4.090 2
4/28/00 2.965 4.590 2 6/13/00 2.82 4.365 2
4/29/00 2.572 3.981 2 6/14/00 2.578 3.991 2
4/30/00 2.157 3.339 2 6/15/00 2.634 4.077 2
5/1/00 2.578 3.991 4 6/16/00 2.694 4.170 2
5/2/00 2.703 4.184 74 6/17/00 2.258 3.495 2
5/3/00 2.497 3.865 12 6/18/00 2.715 4.203 2
5/4/00 2.408 3.728 2 6/19/00 2.446 3.786 2
5/5/00 2.392 3.703 2 6/20/00 2.754 4.263 2
5/6/00 2.609 4.039 7 6/21/00 2.53 3.916 2
5/7/00 2.328 3.604 7 6/22/00 2.483 3.844 2
5/8/00 2.566 3.972 4 6/23/00 2.911 4.506 2
5/9/00 2.829 4.379 2 6/24/00 2.265 3.506 2
5/10/00 2.69 4.164 2 6/25/00 2.649 4.101 2
5/11/00 2.548 3.944 2 6/26/00 3.024 4.681 2
Final Fecal Coliform TMDL for Rocky River
56
Date MGD CFS Effluent FC Conc Date MGD CFS Effluent FC Conc
6/27/00 2.506 3.879 2 8/12/00 2.557 3.958 8
6/28/00 2.615 4.048 2 8/13/00 2.648 4.099 8
6/29/00 2.512 3.889 2 8/14/00 2.7 4.180 2
6/30/00 2.207 3.416 2 8/15/00 3.087 4.779 2
7/1/00 2.424 3.752 2 8/16/00 2.921 4.522 2
7/2/00 2.431 3.763 2 8/17/00 3.074 4.759 2
7/3/00 2.457 3.803 2 8/18/00 3.102 4.802 4
7/4/00 2.54 3.932 2 8/19/00 2.687 4.159 2
7/5/00 3.089 4.782 2 8/20/00 2.549 3.946 2
7/6/00 2.581 3.995 2 8/21/00 2.864 4.433 2
7/7/00 2.631 4.073 2 8/22/00 2.686 4.158 18
7/8/00 2.324 3.598 2 8/23/00 2.678 4.146 18
7/9/00 2.807 4.345 2 8/24/00 2.638 4.084 4
7/10/00 2.756 4.266 2 8/25/00 2.484 3.845 8
7/11/00 2.813 4.354 2 8/26/00 2.793 4.324 8
7/12/00 2.712 4.198 2 8/27/00 2.389 3.698 8
7/13/00 2.583 3.998 2 8/28/00 3.129 4.844 4
7/14/00 2.739 4.240 2 8/29/00 2.71 4.195 2
7/15/00 2.496 3.864 6 8/30/00 2.666 4.127 4
7/16/00 2.2 3.406 2 8/31/00 3.152 4.879 2
7/17/00 2.516 3.895 2 9/1/00 2.919 4.519 2
7/18/00 2.87 4.443 2 9/2/00 2.723 4.215 2
7/19/00 2.463 3.813 2 9/3/00 2.555 3.955 2
7/20/00 2.565 3.971 2 9/4/00 2.527 3.912 2
7/21/00 2.478 3.836 2 9/5/00 2.56 3.963 2
7/22/00 2.657 4.113 2 9/6/00 2.496 3.864 6
7/23/00 2.285 3.537 2 9/7/00 2.823 4.370 12
7/24/00 2.442 3.780 2 9/8/00 2.579 3.992 20
7/25/00 2.634 4.077 2 9/9/00 2.458 3.805 4
7/26/00 2.398 3.712 2 9/10/00 2.819 4.364 4
7/27/00 2.487 3.850 2 9/11/00 2.558 3.960 50
7/28/00 2.577 3.989 2 9/12/00 2.658 4.115 4
7/29/00 2.517 3.896 2 9/13/00 2.58 3.994 14
7/30/00 2.393 3.704 2 9/14/00 2.738 4.238 18
7/31/00 2.849 4.410 2 9/15/00 2.028 3.139 20
8/1/00 2.813 4.354 2 9/16/00 2.147 3.324 20
8/2/00 2.813 4.354 2 9/17/00 2.892 4.477 68
8/3/00 2.933 4.540 2 9/18/00 2.718 4.207 14
8/4/00 2.91 4.505 2 9/19/00 2.763 4.277 6
8/5/00 2.633 4.076 2 9/20/00 2.652 4.105 20
8/6/00 2.844 4.402 2 9/21/00 2.477 3.834 2
8/7/00 2.704 4.186 8 9/22/00 2.685 4.156 12
8/8/00 3.018 4.672 2 9/23/00 2.46 3.808 12
8/9/00 2.835 4.389 2 9/24/00 3.073 4.757 2
8/10/00 2.961 4.584 2 9/25/00 2.689 4.163 4
8/11/00 2.874 4.449 460 9/26/00 2.373 3.673 16
Final Fecal Coliform TMDL for Rocky River
57
Date MGD CFS Effluent FC Conc Date MGD CFS Effluent FC Conc
9/27/00 2.511 3.887 10 11/12/00 2.013 3.116 7
9/28/00 2.455 3.800 46 11/13/00 2.501 3.872 7
9/29/00 2.461 3.810 9 11/14/00 2.489 3.853 10
9/30/00 2.168 3.356 2 11/15/00 2.082 3.223 2
10/1/00 2.569 3.977 2 11/16/00 2.171 3.361 10
10/2/00 2.499 3.868 2 11/17/00 2.109 3.265 2
10/3/00 2.303 3.565 12 11/18/00 1.912 2.960 5
10/4/00 2.569 3.977 6 11/19/00 2.197 3.401 5
10/5/00 2.602 4.028 8 11/20/00 1.947 3.014 2
10/6/00 2.083 3.224 5 11/21/00 0.06 0.093 4
10/7/00 2.038 3.155 5 11/22/00 2.019 3.125 2
10/8/00 2.115 3.274 20 11/23/00 1.914 2.963 2
10/9/00 2.196 3.399 6 11/24/00 1.967 3.045 2
10/10/00 2.261 3.500 12 11/25/00 2.134 3.303 2
10/11/00 2.095 3.243 12 11/26/00 2.095 3.243 2
10/12/00 2.27 3.514 6 11/27/00 2.295 3.553 2
10/13/00 2.08 3.220 10 11/28/00 2.264 3.505 2
10/14/00 1.996 3.090 10 11/29/00 2.417 3.741 2
10/15/00 2.668 4.130 2 11/30/00 2.131 3.299 2
10/16/00 2.447 3.788 2 12/1/00 2.235 3.460 2
10/17/00 2.494 3.861 2 12/2/00 2.007 3.107 2
10/18/00 2.52 3.901 2 12/3/00 1.6 2.477 2
10/19/00 2.375 3.676 2 12/4/00 1.963 3.039 2
10/20/00 2.355 3.646 2 12/5/00 2.186 3.384 16
10/21/00 2.403 3.720 2 12/6/00 2.058 3.186 24
10/22/00 2.567 3.974 2 12/7/00 2.145 3.320 6
10/23/00 2.508 3.882 2 12/8/00 2.229 3.450 2
10/24/00 2.598 4.022 2 12/9/00 2.03 3.142 6
10/25/00 2.428 3.759 2 12/10/00 2.02 3.127 6
10/26/00 2.838 4.393 2 12/11/00 2.231 3.454 2
10/27/00 2.109 3.265 7 12/12/00 2.467 3.819 8
10/28/00 2.403 3.720 2 12/13/00 2.192 3.393 2
10/29/00 2.296 3.554 2 12/14/00 2.252 3.486 2
10/30/00 2.116 3.276 2 12/15/00 2.331 3.608 4
10/31/00 2.486 3.848 2 12/16/00 2.422 3.749 3
11/1/00 2.234 3.458 2 12/17/00 2.27 3.514 3
11/2/00 2.306 3.570 4 12/18/00 2.116 3.276 2
11/3/00 2.299 3.559 8
11/4/00 2.329 3.605 4 12/20/00 2.081 3.221 22
11/5/00 2.145 3.320 4 12/21/00 2.045 3.166 20
11/6/00 2.161 3.345 2 12/22/00 1.851 2.865 10
11/7/00 2.412 3.734 14 12/23/00 1.89 2.926 10
11/8/00 2.319 3.590 18 12/24/00 1.651 2.556 10
11/9/00 2.727 4.221 4 12/25/00 1.738 2.690 24
11/10/00 2.225 3.444 10 12/26/00 2.09 3.235 10
11/11/00 2.206 3.415 7 12/27/00 2.077 3.215 14
Final Fecal Coliform TMDL for Rocky River
58
Date MGD CFS Effluent FC Conc Date MGD CFS Effluent FC Conc
12/28/00 1.813 2.807 15 2/12/01 2.193 3.395 2
12/29/00 1.817 2.813 15 2/13/01 2.164 3.350 4
12/30/00 1.771 2.741 15 2/14/01 2.436 3.771 2
12/31/00 2.44 3.777 5 2/15/01 2.402 3.718 2
1/1/01 2.44 3.777 5 2/16/01 2.653 4.107 2
1/2/01 2.44 3.777 5 2/17/01 2.91 4.505 2
1/3/01 2.44 3.777 5 2/18/01 1.888 2.923 2
1/4/01 2.44 3.777 5 2/19/01 2.171 3.361 2
1/5/01 2.44 3.777 5 2/20/01 2.43 3.762 2
1/6/01 2.44 3.777 5 2/21/01 2.294 3.551 2
1/7/01 2.44 3.777 5 2/22/01 2.175 3.367 2
1/8/01 2.44 3.777 5 2/23/01 2.176 3.368 4
1/9/01 2.44 3.777 5 2/24/01 2.322 3.594 2
1/10/01 2.44 3.777 5 2/25/01 2.503 3.875 2
1/11/01 2.44 3.777 5 2/26/01 2.545 3.940 2
1/12/01 2.44 3.777 5 2/27/01 2.499 3.868 5
1/13/01 2.44 3.777 5 2/28/01 2.264 3.505 2
1/14/01 2.44 3.777 5 3/1/01 2.444 3.783 2
1/15/01 2.44 3.777 5 3/2/01 2.393 3.704 2
1/16/01 2.44 3.777 5 3/3/01 2.496 3.864 2
1/17/01 2.44 3.777 5 3/4/01 2.802 4.337 2
1/18/01 2.44 3.777 5 3/5/01 2.315 3.584 2
1/19/01 2.44 3.777 5 3/6/01 2.235 3.460 2
1/20/01 2.44 3.777 5 3/7/01 2.345 3.630 8
1/21/01 2.44 3.777 5 3/8/01 2.217 3.432 4
1/22/01 2.44 3.777 5 3/9/01 2.088 3.232 12
1/23/01 2.44 3.777 5 3/10/01 2.052 3.176 4
1/24/01 2.44 3.777 5 3/11/01 1.927 2.983 4
1/25/01 2.44 3.777 5 3/12/01 2.274 3.520 2
1/26/01 2.44 3.777 5 3/13/01 2.421 3.748 2
1/27/01 2.44 3.777 5 3/14/01 2.281 3.531 2
1/28/01 2.44 3.777 5 3/15/01 2.808 4.347 2
1/29/01 2.44 3.777 5 3/16/01 2.278 3.526 2
1/30/01 2.44 3.777 5 3/17/01 2.146 3.322 2
1/31/01 2.17 3.359 2 3/18/01 2.086 3.229 2
2/1/01 2.083 3.224 10 3/19/01 2.168 3.356 2
2/2/01 2.144 3.319 5 3/20/01 2.73 4.226 10
2/3/01 2.002 3.099 5 3/21/01 3.426 5.303 4
2/4/01 1.971 3.051 8 3/22/01 2.707 4.190 2
2/5/01 2.069 3.203 41 3/23/01 2.382 3.687 2
2/6/01 2.211 3.423 36 3/24/01 2.307 3.571 3
2/7/01 2.135 3.305 58 3/25/01 2.177 3.370 3
2/8/01 2.434 3.768 2 3/26/01 2.301 3.562 2
2/9/01 2.306 3.570 28 3/27/01 2.069 3.203 2
2/10/01 2.327 3.602 29 3/28/01 2.306 3.570 2
2/11/01 1.998 3.093 29 3/29/01 3.217 4.980 2
Final Fecal Coliform TMDL for Rocky River
59
Date MGD CFS Effluent FC Conc Date MGD CFS Effluent FC Conc
3/30/01 3.078 4.765 2 5/15/01 2.582 3.997 2
3/31/01 2.546 3.941 2 5/16/01 2.627 4.067 6
4/1/01 2.398 3.712 2 5/17/01 2.761 4.274 2
4/3/01 2.44 3.777 2 5/18/01 2.514 3.892 3
4/4/01 2.563 3.967 2 5/19/01 2.677 4.144 3
4/5/01 2.558 3.960 2 5/20/01 2.673 4.138 2
4/6/01 2.728 4.223 2 5/21/01 2.674 4.139 2
4/7/01 2.375 3.676 2 5/22/01 2.501 3.872 2
4/8/01 2.828 4.378 2 5/23/01
4/9/01 2.555 3.955 2 5/24/01 2.648 4.099 2
4/10/01 2.71 4.195 2 5/25/01 2.714 4.201 6
4/11/01 2.772 4.291 2 5/26/01 2.482 3.842 2
4/12/01 2.368 3.666 2 5/27/01 2.225 3.444 2
4/13/01 2.451 3.794 2 5/28/01 2.391 3.701 2
4/14/01 2.185 3.382 2 5/29/01 2.677 4.144 2
4/15/01 2.403 3.720 2 5/30/01 2.533 3.921 2
4/16/01 2.158 3.341 2 5/31/01 2.552 3.950 2
4/17/01 2.321 3.593 2
4/18/01 2.138 3.310 2
4/19/01 2.36 3.653 2
4/20/01 2.563 3.967 2
4/21/01 2.374 3.675 2
4/22/01 2.444 3.783 2
4/23/01 2.936 4.545 2
4/24/01 2.756 4.266 4
4/25/01 2.49 3.854 2
4/26/01 2.435 3.769 2
4/27/01 2.568 3.975 2
4/28/01 2.093 3.240 2
4/29/01 2.635 4.079 4
4/30/01 2.44 3.777 4
5/1/01 2.496 3.864 6
5/2/01 2.763 4.277 10
5/3/01 2.583 3.998 10
5/4/01 2.613 4.045 7
5/5/01 2.284 3.536 7
5/6/01 2.521 3.902 2
5/7/01 2.402 3.718 2
5/8/01 2.596 4.019 4
5/9/01 2.592 4.012 2
5/10/01 2.629 4.070 2
5/11/01 2.449 3.791 2
5/12/01 2.264 3.505 2
5/13/01 2.412 3.734 2
5/14/01 2.799 4.333 2
Final Fecal Coliform TMDL for Rocky River
60
Appendix II. North Carolina Division of Water Quality Ambient Data Fecal Coliform
Concentrations at Station Q7330000 (SR2420). The remark codes are listed below the data.
Date Fecal Coliform Concentration Remark
5/2/95 11:00 13000
6/12/95 10:20 11000
7/17/95 10:00 70
8/9/95 10:35 1400
9/12/95 11:15 970
10/2/95 10:10 200
11/20/95 10:50 110
12/19/95 16:10 3100
1/29/96 16:10 800
2/20/96 10:00 2000
3/12/96 10:55 260
4/22/96 9:40 580
5/13/96 9:40 390
6/19/96 15:20 580
7/18/96 16:20 680
8/15/96 14:40 510
9/16/96 10:50 630
10/30/96 16:30 180
11/18/96 10:10 100
12/16/96 13:30 100
1/9/97 13:45 13000
2/13/97 9:20 36
3/26/97 11:50 2000
4/29/97 11:45 27
5/15/97 13:35 2200
6/17/97 15:55 350
7/29/97 10:10 260
8/18/97 16:05 600
9/29/97 9:40 260
10/29/97 15:50 100
11/24/97 14:55 300
12/15/97 13:15 27
1/14/98 13:20 82
2/5/98 9:40 14
3/3/98 9:45 140
4/2/98 15:55 230
5/7/98 10:30 3800
6/18/98 14:00 440
7/23/98 10:30 900
8/3/98 16:55 660
9/3/98 11:30 460 A
10/26/98 15:30 1500
Final Fecal Coliform TMDL for Rocky River
61
11/30/98 15:40 36
12/29/98 11:00 10 K
1/25/99 10:10 320
2/24/99 15:20 10 K
3/25/99 10:40 45
4/14/99 11:05 290
5/5/99 9:25 160
6/7/99 11:45 120
7/21/99 15:50 400
8/11/99 10:30 180 J
9/8/99 10:00 140 J
10/5/99 11:40 300
11/3/99 9:35 130 J
12/21/99 10:13 230
1/3/00 15:40 320
2/10/00 10:40 100
3/29/00 11:00 81
2000-04-13 400
2000-05-16 270
2000-06-27 520
2000-07-26 440
2000-08-22 1500
2000-09-27 440
2000-10-24 290
2000-11-30 290
2000-12-19 490
2001-01-18 110
2001-02-20 200
2001-04-25 2100
2001-06-06 980
Final Fecal Coliform TMDL for Rocky River
62
STORET REMARK CODES
A Value reported is the mean of two or more determinations.
B Results based upon colony counts outside the acceptable range.
C Value calculated. (Also see "$")
D Indicates field measurement.
E Indicates extra samples taken at composite stations.
F In the case of species, F indicates female sex.
G Value reported is the maximum of two or more determinations.
H Value based on field kit determination; results may or may not be accurate.
J Estimated value; value not accurate.
K Actual value is known to be less than value given.
L Actual value is known to be greater than value given.
Presence of material verified but not quantified.
In the case of temperature or oxygen reduction potential, M indicates a negative value.
M In the case of species, M indicates male sex.
N Presumptive evidence of presence of material.
O Sampled, but analysis lost or not performed.
P Too numerous to count.
Q Sample held beyond normal holding time.
R Significant rain in the past 48 hours.
S Laboratory test.
T Value reported is less than criteria of detection.
Indicates material was analyzed for, but not detected.
U In case of species, U indicates undetermined sex.
V Indicates the analyte was detected in the sample and associated blank method.
W Value observed is less than the lowest value reportable under "T" code.
X Value is quasi vertically integrated sample.
Y Laboratory analysis from unpreserved data may not be accurate.
Too many colonies were present to count (TMTC),
Z the numeric value represents the filtration volume.
$ Calculated value. (also see "C")
Final Fecal Coliform TMDL for Rocky River
63
Appendix III. Yadkin Pee-Dee River Basin Association Discharger Coalition Monitoring
Station Q7330000.
DATE FC Conc (col/100ml) REMARK
6/2/98 480
7/15/98 5900
8/4/98 590
9/3/98 6000L
10/22/98 1600
11/17/98 390
12/21/98 370
1/13/99 180
2/9/99 1200P
3/18/99 68B
4/13/99 240
5/4/99 380
6/8/99 320
7/27/99 320
8/3/99 55B
9/16/99 1000B
10/19/99 160
11/9/99 110
12/21/99 3100
1/19/00 68B
2/7/00 42B
3/30/00 260
4/28/00 450
5/3/00 2000
6/7/00 600B
7/6/00 330
9/15/00 5500
10/19/00 6000P
11/20/00 480
12/19/00 470
1/11/01 140B
2/21/01 1300B
3/13/01 180B
4/19/01 210
5/9/01 480
6/7/01 310
7/18/01 320
8/8/01 49
9/12/01 190
10/10/01 150
Final Fecal Coliform TMDL for Rocky River
64
FC Conc. FC. Conc FC Conc. FC. Conc
Date Upstream Downstream Date Upstream Downstream
1/3/96 370 4200 7/31/96 330 170
1/10/96 160 110 8/2/96 3000 2000
1/17/96 600 1060 8/5/96 230 140
1/24/96 2200 410 8/7/96 120 130
1/31/96 310 180 8/9/96 180 200
2/7/96 320 400 8/12/96 3700 980
2/14/96 160 370 8/14/96 230 140
2/21/96 240 220 8/16/96 10 90
2/28/96 580 6000 8/19/96 340 100
3/6/96 1800 780 8/21/96 220 220
3/14/96 110 140 8/23/96 488 420
3/20/96 100 6000 8/26/96 960 263
3/27/96 220 510 8/28/96 500 2900
4/3/96 220 250 8/30/96 370 960
4/10/96 250 200 9/3/96 6000 740
4/18/96 450 580 9/5/96 1680 3200
4/24/96 250 400 9/6/96 5400 5300
5/2/96 340 1200 9/9/96 425 220
5/8/96 100 210 9/11/96 40 60
5/16/96 200 300 9/13/96 120 90
5/22/96 520 230 9/16/96 110 370
5/29/96 100 460 9/18/96 400 260
6/3/96 580 280 9/20/96 90 120
6/5/96 480 220 9/23/96 320 1000
6/7/96 4400 340 9/25/96 190 140
6/10/96 7200 1080 9/27/96 380 220
6/12/96 700 400 10/2/96 180 420
6/14/96 560 230 10/9/96 1080 350
6/17/96 470 310 10/16/96 620 10
6/19/96 660 410 10/23/96 3600 210
6/21/96 920 1080 10/30/96 600 30
6/24/96 380 330 11/6/96 200 40
6/26/96 280 320 11/13/96 100 50
6/28/96 190 190 11/20/96 90 80
7/1/96 510 250 11/27/96 41 50
7/3/96 800 1160 12/4/96 106 100
7/4/96 594 300 12/11/96 280 100
7/8/96 200 110 12/19/96 3400 520
7/10/96 520 260 12/23/96 231 28
7/12/96 180 160
7/15/96 760 380
7/17/96 390 280
7/19/96 1060 2100
7/22/96 290 460
7/24/96 220 110
7/26/96 2300 2700
7/29/96 70 40
Final Fecal Coliform TMDL for Rocky River
65
Appendix IV. Mooresville WWTP Upstream/Downstream Data 1996 – June 1998.
FC Conc. FC Conc. FC Conc. FC Conc.
Date Upstream Downstream Date Upstream Downstream
01/08/97 50 31 07/31/97 835 365
01/15/97 150 63 08/01/97 320 347
01/22/97 181 38 08/04/97 360 69
01/29/97 188 131 08/06/97 210 50
02/02/97 550 113 08/08/97 240 2250
02/12/97 125 59 08/12/97 250 240
02/19/97 56 25 08/13/97 300 280
02/26/97 110 38 08/15/97 900 610
03/05/97 81 57 08/18/97 450 230
03/12/97 106 69 08/20/97 320 100
03/20/97 660 44 08/22/97 375 95
03/26/97 4800 5200 08/25/97 110 53
04/02/97 60 13 08/27/97 230 350
04/09/97 29 50 08/29/97 250 210
04/16/97 119 47 09/03/97 175 125
04/24/97 420 280 09/04/97 143 181
04/30/97 563 169 09/05/97 240 700
05/07/97 131 119 09/08/97 138 156
05/14/97 450 144 09/10/97 1180 1630
05/21/97 560 840 09/12/97 470 527
05/28/97 660 135 09/15/97 113 125
06/02/97 450 250 09/17/97 443 81
06/05/97 365 230 09/19/97 219 295
06/06/97 200 210 09/22/97 181 138
06/09/97 430 425 09/25/97 1100 1533
06/11/97 1150 230 09/26/97 210 330
06/13/97 3200 4700 10/01/97 38 113
06/16/97 520 290 10/08/97 340 210
06/19/97 470 350 10/15/97 1450 730
06/20/97 310 81 10/22/97 460 138
06/24/97 620 210 10/31/97 680 144
06/25/97 490 113 11/05/97 290 131
06/27/97 1188 595 11/12/97 450 140
06/30/97 150 144 11/20/97 550 38
07/02/97 830 500 11/25/97 113 53
07/03/97 210 119 12/03/97 260 88
07/07/97 330 144 12/11/97 181 56
07/09/97 210 113 12/17/97 25 124
07/11/97 360 297 12/22/97 800 520
07/14/97 440 125 12/31/97 513 6
07/16/97 2833 230
07/18/97 1260 370
07/21/97 1469 530
07/24/97 8500 6200
Final Fecal Coliform TMDL for Rocky River
66
07/25/97 5000 5500
07/28/97 960 200
FC Conc. FC. Conc
Date Upstream Downstream
01/07/98 320 210
01/14/98 100 113
01/21/98 210 540
01/29/98 88 24
02/06/98 280 156
02/13/98 430 106
02/18/98 220 250
02/26/98 106 88
03/04/98 1100 100
03/11/98 138 94
03/20/98 129 163
03/25/98 230 53
04/01/98 685 290
04/08/98 340 270
04/17/98 6000 6000
04/22/98 230 144
04/29/98 405 270
05/06/98 260 70
05/13/98 1100 180
05/20/98 370 150
05/29/98 505 450
Final Fecal Coliform TMDL for Rocky River
67
Appendix V. Division of Water Quality Intensive Fecal Coliform Study in the Rocky River Watershed.
Fecal
Coliform Remark Geometric Arithmetic Standard
Station # Description Date /100ml Code Mean Mean Deviation
DYE-1 1
Dye Creek in Iredell Co. at SR
1142 4/11/01 30 68 80 50
DYE-1 1A 4/11/01 81
DYE-1 1B 4/11/01 130
DYE-1 1 4/19/01 450 416 417 35
DYE-1 1A 4/19/01 420 A
DYE-1 1B 4/19/01 380
DYE-1 1 4/26/01 1 U 1 1 0
DYE-1 1A 4/26/01 1 U
DYE-1 1B 4/26/01 1
DYE-1 1 5/3/01 75 149 165 78
DYE-1 1A 5/3/01 210
DYE-1 1B 5/3/01 210
DYE-1 1 5/10/01 56 59 59 7
DYE-1 1A 5/10/01 55
DYE-1 1B 5/10/01 67 B4
DYE-1 1 5/17/01 520 1369 1707 1190
DYE-1 1A 5/17/01 1700 B1
DYE-1 1B 5/17/01 2900
DYE-1 1 5/24/01 57 54 54 4
DYE-1 1A 5/24/01 50
DYE-1 1B 5/24/01 54
DYE-1 1 5/31/01 76 B4 140 233 283
DYE-1 1A 5/31/01 64 B4
DYE-1 1B 5/31/01 560
RR-1 1
Rocky River in Iredell Co. at NC
136 4/11/01 69 70 70 1
RR-1 1A 4/11/01 70
RR-1 1B 4/11/01 70
RR-1 1 4/19/01 73 77 77 7
RR-1 1A 4/19/01 73
RR-1 1B 4/19/01 85
RR-1 1 4/26/01 180 209 217 72
RR-1 1A 4/26/01 170
RR-1 1B 4/26/01 300
RR-1 1 5/3/01 240 231 233 40
RR-1 1A 5/3/01 270
RR-1 1B 5/3/01 190 B1
RR-1 1 5/10/01 80 B4 116 120 35
RR-1 1A 5/10/01 140 B1
RR-1 1B 5/10/01 140 B1
Final Fecal Coliform TMDL for Rocky River
68
RR-1 1 5/17/01 340 397 403 93
RR-1 1A 5/17/01 360
RR-1 1B 5/17/01 510
RR-1 1 5/24/01 240 283 297 116
RR-1 1A 5/24/01 430
RR-1 1B 5/24/01 220
RR-1 1 5/31/01 130 B1 143 143 12
RR-1 1A 5/31/01 150 B1
RR-1 1B 5/31/01 150 B1
RR-2 1
Rocky River in Iredell Co. at SR
1142 4/11/01 410 433 433 25
RR-2 1A 4/11/01 460
RR-2 1B 4/11/01 430
RR-2 1 4/19/01 210 220 220 17
RR-2 1A 4/19/01 210
RR-2 1B 4/19/01 240
RR-2 1 4/26/01 1700 B1 1384 1400 265
RR-2 1A 4/26/01 1300 B1
RR-2 1B 4/26/01 1200 B1
RR-2 1 5/3/01 150 B1 206 213 71
RR-2 1A 5/3/01 200 B1
RR-2 1B 5/3/01 290
RR-2 1 5/10/01 390 374 377 51
RR-2 1A 5/10/01 320
RR-2 1B 5/10/01 420
RR-2 1 5/17/01 910 B4 859 860 50
RR-2 1A 5/17/01 860 B4
RR-2 1B 5/17/01 810 B4
RR-2 1 5/24/01 240 250 250 10
RR-2 1A 5/24/01 260 J2
RR-2 1B 5/24/01 250
RR-2 1 5/31/01 220 J2 213 213 12
RR-2 1A 5/31/01 200
RR-2 1B 5/31/01 220
Q7330000 1
Rocky River in Mecklenburg Co.
at SR 2420 4/11/01 260 220 223 47
Q7330000 1A 4/11/01 240
Q7330000 1B 4/11/01 170
Q7330000 1 4/19/01 630 614 617 71
Q7330000 1A 4/19/01 680
Q7330000 1B 4/19/01 540
Q7330000 1 4/26/01 200 271 277 67
Q7330000 1A 4/26/01 310
Q7330000 1B 4/26/01 320
Q7330000 1 5/3/01 330 375 377 40
Q7330000 1A 5/3/01 400
Final Fecal Coliform TMDL for Rocky River
69
Q7330000 1B 5/3/01 400
Q7330000 1 5/10/01 560 575 577 57
Q7330000 1A 5/10/01 530
Q7330000 1B 5/10/01 640 B4
Q7330000 1 5/17/01 5800 5460 5500 794
Q7330000 1A 5/17/01 4600
Q7330000 1B 5/17/01 6100 B3
Q7330000 1 5/24/01 590 609 610 44
Q7330000 1A 5/24/01 660 B4
Q7330000 1B 5/24/01 580
Q7330000 1 5/31/01 850 B4 819 820 44
Q7330000 1A 5/31/01 840 B4
Q7330000 1B 5/31/01 770 B4
Final Fecal Coliform TMDL for Rocky River
70
Appendix VI. Public Notification of Rocky River Fecal Coliform TMDL
Rocky River, Yadkin-Pee Dee River Basin
Grants Creek, Yadkin-Pee Dee River Basin
Now Available Upon Request
Rocky River (in Subbasin 03-07-11)
Fecal Coliform Total Maximum Daily Load
Grants Creek (in Subbasin 03-07-04)
Fecal Coliform Total Maximum Daily Load
Are now available upon request from the North Carolina Division of Water Quality. These TMDL studies were
prepared as a requirement of the Federal Water Pollution Control Act, Section 303(d). The studies identify the
sources of pollution, determine allowable loads to the surface waters, and suggest allocations for pollutants of
concern.
TO OBTAIN A FREE COPY OF THE TMDL REPORTS:
Please contact Ms. Robin Markham [phone], extension 558 or write to:
Ms. Betsy Albright
Water Quality Planning Branch
NC Division of Water Quality
1617 Mail Service Center
Raleigh, NC 27699-1617
Interested parties are invited to comment on the draft TMDL study by May 24, 2002. Comments and questions concerning the reports
should be directed to Ms. Betsy Albright (ext. 514) at the above number and address. The draft TMDLs are also located on the
following website: http://h2o.enr.state.nc.us/tmdl
Public Meetings Notice
Rocky River TMDL Grants Creek TMDL
A public meeting to discuss the Rocky A public meeting to discuss the
River Fecal Coliform TMDL will be held Grants Creek Fecal Coliform TMDL
On Wednesday, May 8th at 11:00am at will be held on Wednesday, May 8th
the following address: at 3:30pm at the following address
DENR Mooresville Regional Office Rowan County Center
919 North Main Street 2727-A Old Concord Road
Mooresville, NC 28115 Salisbury, NC 28146
Final Fecal Coliform TMDL for Rocky River
71
Final Fecal Coliform TMDL for Rocky River
72
Appendix VII. Public Comments and Response to Comments on the Public Review Draft of the Rocky River Fecal Coliform TMDL
Final Fecal Coliform TMDL for Rocky River
73
Final Fecal Coliform TMDL for Rocky River
74
Final Fecal Coliform TMDL for Rocky River
75
Final Fecal Coliform TMDL for Rocky River
76
Appendix VII. DWQ Response to Public Comment on the Public Review Draft of the Rocky River Fecal
Coliform TMDL
The North Carolina Division of Water Quality welcomes the comments from the North Carolina Farm Bureau
Federation. As sited in the TMDL, the Coliform Routing and Allocation Program is a simple model and is used
by DWQ when there is a dearth in site-specific fecal coliform concentration data. DWQ recognizes that there is
uncertainty associated with the modeling and input data used in the modeling. Where there was not site specific
or North Carolina based data available, an extensive literature review was conducted in order to determine the
most appropriate input values for the CRAP model. DWQ recognizes that the land cover/land use is from 1996
and uncertainty in the modeling exists because of the age of this data. However, DWQ has recently conducted
watershed reconnaissance and feels that the model appropriately approximates the presence and absence of
livestock throughout the watershed.
The hydrology portion of the model is based on daily flow values which were calculated using an aerial
weighting approach utilizing a gaged stream in a nearby watershed. These flows were adjusted to account for
the discharge from the Mooresville WWTP (NC4672800).
The model assumes that livestock grazing and manure application occur only in watersheds 04-07. The area
around Mooresville (including the herbaceous land in WS01-WS03) did not include livestock grazing or
manure application in the model. The CRAP model is based on average conditions, while manure might not be
deposited or applied every day throughout a specified period, fecal coliform polluted runoff does occur after
manure has been deposited or applied. Stephenson and Street (1978), and Jawson et al. (1982) have determined
that elevated levels of bacteria may persist in pasture runoff months after cattle have been removed from the
pastureland.
Due to the level of uncertainty in the modeling assumptions and the input data, the DWQ supports an adaptive
management approach to reducing the fecal coliform levels within Rocky River. We very much welcome the
North Carolina Farm Bureau Federation’s involvement in developing a fecal coliform management strategy for
the Rocky River.
References:
Stephenson, G.R. and L.U. Street. 1978. Bacterial Variations in streams from a southwest Idaho rangeland
watershed. J. Environ. Qual. 7:150-57
Jawson, M.D., L.F. Elliot, K.E. Saxton, and D.M. Fortier. 1982. The effect of cattle grazing on indicator
bacteria in runoff from a Pacific Northwest watershed. J. Environ. Qual. 11:621-7