analysis of the harpeth river for water withdrawals and ... aquaeter... · nstream from franklin...
TRANSCRIPT
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Presentation to Presentation to
Franklin, TennesseeFranklin, Tennessee
Analysis of the Harpeth River for Analysis of the Harpeth River for
Water Withdrawals and Wastewater Water Withdrawals and Wastewater
Assimilative CapacityAssimilative Capacity
Prepared by HRWA/AquAeTer, Inc.
Dorie Bolze
Pam Davee
John Michael Corn, E.I.T.
Michael R. Corn, P.E.
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HARPETH RIVER WATERSHED
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HRWA & TDEC DISSOLVED OXYGEN STUDY -
AUGUST AND SEPTEMBER 2006
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optimizing environmental resources | water, air, earth
CLIENT: HRWA
LOCATION: Harpeth River
PROJECT/FILE: 061512
FIGURE 1
SCHEMATIC OF
WASTEWATER ALTERNATIVES
FRANKLIN
WATER USERS
WASTEWATER
TREATMENT
FACILITIES
TREATED
WASTEWATER
STORAGE
LAND
APPLICATION
WATER
RE-USE
FACILITIES
HVUD
MALLORY VALLEY
(CUMBERLAND RIVER)
WATER
TREATMENT
FACILITIES
OTHER
WATER
SOURCES
WATER
SUPPLY
STORAGE
HA
RP
ET
H R
IVE
R
JUNE -
OCTOBER
NOVEMBER - MAY
NOVEMBER –
MAY
NOVEMBER - MAY
NOVEMBER –
MAY
JUNE - OCTOBER
JUNE - OCTOBER
optimizing environmental resources | water, air, earth
CLIENT: HRWA
LOCATION: Harpeth River
PROJECT/FILE: 061512
FIGURE 1
SCHEMATIC OF
WASTEWATER ALTERNATIVES
FRANKLIN
WATER USERS
WASTEWATER
TREATMENT
FACILITIES
TREATED
WASTEWATER
STORAGE
LAND
APPLICATION
WATER
RE-USE
FACILITIES
HVUD
MALLORY VALLEY
(CUMBERLAND RIVER)
WATER
TREATMENT
FACILITIES
OTHER
WATER
SOURCES
WATER
SUPPLY
STORAGE
HA
RP
ET
H R
IVE
R
JUNE -
OCTOBER
NOVEMBER - MAY
NOVEMBER –
MAY
NOVEMBER - MAY
NOVEMBER –
MAY
JUNE - OCTOBER
JUNE - OCTOBER
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DEFINITIONS
o ASSIMILATIVE CAPACITY – How much organic carbon and
nitrogen mass loadings that the stream can accept without degrading
the dissolved oxygen in the stream below 5 mg/L and not causing
nuisance algal blooms in the Harpeth River
o DISSOLVED OXYGEN – USEPA established in 1972 a nation-wide
standard of 5 mg/L for dissolved oxygen that has to be met in all U.S.
streams and lakes
o ANTI-DEGRADATION – A stream that is not meeting water-quality
standards cannot be further degraded
o EFFLUENT TECHNOLOGY LIMITS – Treatment standards that
must be met by all municipal dischargers
o WATER-QUALITY BASED TREATMENT LIMITS – More
stringent treatment standards that must be met if the technology
limits do not result in stream water quality standards being met
o 1 million gallons per day (mgd) = 1.547 cubic feet per second (cfs)
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REGULATORY REQUIREMENTS
1. Franklin POTW must meet its permit discharge limits for organics (BOD) and nutrients (nitrogen)
2. The Franklin POTW, Lynwood Utility and Cartwright Creek Utility must also meet the stream
water quality standard for dissolved oxygen of 5
mg/L
3. Neither Franklin, Lynwood nor Cartwright Creek
can further degrade the Harpeth River if it is not meeting the dissolved oxygen standard of 5 mg/L
upstream from the effluent discharge point
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WATER WITHDRAWAL
REGULATORY REQUIREMENTS
o TDEC water pollution regulations exemption 4: “existing water withdrawals on July 25, 2000 which
do not adversely alter or effect the classified use of
the source stream are not subject to these requirements.” (1200-4-7-.02) (Grandfather Clause)
o TDEC regulations and statute: “it is unlawful ... To carry out any activity which may result in the
alteration of the physical, chemical, radiological, biological, or bacteriological properties of any
waters of the state, including wetlands. These
activities include, but are not limited to: ... water withdrawals, ...” (1200-4-7-.01)
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BOILER PLATE LANGUAGE IN ALL
NPDES PERMIT LIABILITIES
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IMPORTANT CONSTRAINTS ON RIVER
ASSIMILATIVE CAPACITY
o FLOW UPSTREAM FROM THE FRANKLIN POTW
o WATER TEMPERATURE
o DISSOLVED OXYGEN IN THE RIVER WATER
COMING TO EACH OF THESE FACILITIES
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HARPETH RIVER FLOWS
optimizing environmental resources | water, air, earth
CLIENT: Harpeth River Watershed Association
LOCATION: Franklin, Tennessee
PROJECT/FILE: 061512 FIGURE – FLOWS
USGS Gage Numbers:
03432350 – Harpeth River at Franklin 03432390 – Spencer Creek at Franklin 03432400 – Harpeth River below Franklin
03433500 – Harpeth River at Bellevue 03434500 – Harpeth River at Kingston Springs
1
10
100
1,000
10,000
7/25/2002 8/4/2002 8/14/2002 8/24/2002 9/3/2002 9/13/2002 9/23/2002 10/3/2002
Date
Flo
w (cf
s)
03432350 03432390 03432400 03433500 03434500
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USEPA DISSOLVED OXYGEN DATA
AUGUST 2000
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TD
EC
DIU
RN
AL
DIS
SO
LV
ED
OX
YG
EN
ST
UD
Y
RE
SU
LT
S A
UG
US
T 2
00
2
Flo
w ra
nge
com
ing to
Fra
nklin
PO
TW
–3
to 4
.5 c
fs. D
ow
nstre
am
from
Fra
nklin
PO
TW
–11
to 1
4 c
fs
Estim
ate
d E
ffluen
t Pe
rcen
tage
Do
wn
stre
am
Usin
g P
OT
W F
low
of 3
mgd
–33%
to 4
2%
Estim
ate
d E
ffluen
t Pe
rcen
tage
Do
wn
stre
am
Usin
g P
OT
W F
low
of 6
mgd
–66%
to 8
4%
Harp
eth R
iver DO
Aug. 2-9, 2002
0 2 4 6 8
10
12
Date / Time
08/02/02 15:30:00
08/02/02 20:00:00
08/03/02 00:30:00
08/03/02 05:00:00
08/03/02 09:30:00
08/03/02 14:00:00
08/03/02 18:30:00
08/03/02 23:00:00
08/04/02 03:30:00
08/04/02 08:00:00
08/04/02 12:30:00
08/04/02 17:00:00
08/04/02 21:30:00
08/05/02 02:00:00
08/05/02 06:30:00
08/05/02 11:00:00
08/05/02 15:30:00
08/05/02 20:00:00
08/06/02 00:30:00
08/06/02 05:00:00
08/06/02 09:30:00
08/06/02 14:00:00
08/06/02 18:30:00
08/06/02 23:00:00
08/07/02 03:30:00
08/07/02 08:00:00
08/07/02 12:30:00
08/07/02 17:00:00
08/07/02 21:30:00
08/08/02 02:00:00
08/08/02 06:30:00
08/08/02 11:00:00
08/08/02 15:30:00
08/08/02 20:00:00
08/09/02 00:30:00
08/09/02 05:00:00
9/8/2002 9:30
Dissolved Oxygen (ppm)
RM
88.0
RM
84.4
RM
79.8
RM
63.3
RM
45.0
DO
Sta
ndard
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TDEC DIURNAL DISSOLVED OXYGEN STUDY
RESULTS SEPTEMBER 11-25, 2002
Flow range coming to Franklin POTW – 2.6 to 127 cfs. Downstream from Franklin POTW – 10 to 135 cfs
Estimated Effluent Percentage Downstream Using POTW Flow of 3 mgd – 3% to 49%
Estimated Effluent Percentage Downstream Using POTW Flow of 6 mgd – 7% to 73%
Harpeth River Dissolved O2 Sept. 11-25, 2002
0
1
2
3
4
5
6
7
8
9
10
11
09/1
1/02
15:0
009
/12/0
2 15
:30
13/0
9/200
2 16
:00:
00
14/0
9/200
2 16
:30:
00
15/0
9/200
2 17
:00:
00
16/0
9/200
2 17
:30:
00
17/0
9/200
2 18
:00:
00
18/0
9/200
2 18
:30:
00
19/0
9/200
2 19
:00:
00
20/0
9/200
2 19
:30:
00
21/0
9/200
2 20
:00:
00
22/0
9/200
2 20
:30:
00
23/0
9/200
2 21
:00:
00
24/0
9/200
2 21
:30:
00
Dis
so
lve
d O
xy
ge
n p
pm
RM 45.0
RM 63.3
RM 79.8
RM 84.4
RM 87.7
Standard
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TDEC DIURNAL DISSOLVED OXYGEN STUDY
RESULTS JULY - AUGUST 2003
Flow range coming to Franklin POTW – 9 to 82 cfs. Downstream from Franklin POTW – 22 to 105 cfs
Estimated Effluent Percentage Downstream Using POTW Flow of 3 mgd – 4% to 42%
Estimated Effluent Percentage Downstream Using POTW Flow of 6 mgd – 9% to 21%
Harpeth River Dissolved Oxygen
Jul 24- Aug 8, 2003
0
1
2
3
4
5
6
7
8
9
10
24/0
7/2
003 1
1:0
0:0
0
25/0
7/2
003 1
1:0
0:0
0
26/0
7/2
003 1
1:0
0:0
0
27/0
7/2
003 1
1:0
0:0
0
28/0
7/2
003 1
1:0
0:0
0
29/0
7/2
003 1
1:0
0:0
0
30/0
7/2
003 1
1:0
0:0
0
31/0
7/2
003 1
1:0
0:0
0
1/8
/2003 1
1:0
0
2/8
/2003 1
1:0
0
3/8
/2003 1
1:0
0
4/8
/2003 1
1:0
0
5/8
/2003 1
1:0
0
6/8
/2003 1
1:0
0
7/8
/2003 1
1:0
0
8/8
/2003 1
1:0
0
Date/Time
D.O. 87.7
D.O. 84.4
D.O. 79.8
D.O. 45.0
DO Standard
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HRWA & TDEC DISSOLVED OXYGEN DATA
AUGUST-SEPTEMBER 2006
0
1
2
3
4
5
6
7
8
9
10
0 20 40 60 80 100 120
HARPETH RIVER MILE
DO
(m
g/L
)
MIN DO MAX DO DO STANDARD
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FLOW DURING HRWAS STUDY
AUGUST-SEPTEMBER 2006
FLOW DURING AUGUST-SEPTEMBER 2006
0
20
40
60
80
100
120
140
160
0 2 4 6 8 10 12
FLOW (cfs)
SIT
E (
#)
MIN FLOW
MAX FLOW
SITE (#)
FL
OW
(cf
s)
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EPA MODEL – NON-POINT AND POINT
SOURCE REDUCTIONS
Flow coming to Franklin POTW = 17 cfs
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EPA – FRANKLIN SCENARIOS
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PROBLEM IDENTIFICATION
1. Foremost is that the natural flows in the Harpeth are not sufficient during low-flow warm months
from June through October to assimilate the
current effluent discharges to the River
2. USEPA will be running their water quality model to
determine what river flows and river quality are required to be able to assimilate the POTW’s
discharge without violating the dissolved oxygen standard for the Harpeth River.
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optimizing environmental resources | water, air, earth
CLIENT: HRWA
LOCATION: Harpeth River
PROJECT/FILE: 061512
FIGURE 1
SCHEMATIC OF
WASTEWATER ALTERNATIVES
FRANKLIN
WATER USERS
WASTEWATER
TREATMENT
FACILITIES
TREATED
WASTEWATER
STORAGE
LAND
APPLICATION
WATER
RE-USE
FACILITIES
HVUD
MALLORY VALLEY
(CUMBERLAND RIVER)
WATER
TREATMENT
FACILITIES
OTHER
WATER
SOURCES
WATER
SUPPLY
STORAGE
HA
RP
ET
H R
IVE
R
JUNE -
OCTOBER
NOVEMBER - MAY
NOVEMBER –
MAY
NOVEMBER - MAY
NOVEMBER –
MAY
JUNE - OCTOBER
JUNE - OCTOBER
optimizing environmental resources | water, air, earth
CLIENT: HRWA
LOCATION: Harpeth River
PROJECT/FILE: 061512
FIGURE 1
SCHEMATIC OF
WASTEWATER ALTERNATIVES
FRANKLIN
WATER USERS
WASTEWATER
TREATMENT
FACILITIES
TREATED
WASTEWATER
STORAGE
LAND
APPLICATION
WATER
RE-USE
FACILITIES
HVUD
MALLORY VALLEY
(CUMBERLAND RIVER)
WATER
TREATMENT
FACILITIES
OTHER
WATER
SOURCES
WATER
SUPPLY
STORAGE
HA
RP
ET
H R
IVE
R
JUNE -
OCTOBER
NOVEMBER - MAY
NOVEMBER –
MAY
NOVEMBER - MAY
NOVEMBER –
MAY
JUNE - OCTOBER
JUNE - OCTOBER
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OPTIONS
1. No discharges to the Harpeth River during summer months
a. Hold and Release;
b. Water Reuse, either for water supply or irrigation; or
c. Pipe to a larger stream – Cumberland River or to Harpeth at Kingston Springs.
2. Carbon or RO at end of pipe for all dischargers on the Harpeth River
a. For Franklin, $5 million to $10 million capital;
b. For Franklin, $1 million to $2 million added operating expenses per year;
c. Present Worth = $16.5 million to $33 million
3. Reaerate the River at strategic locations downstream from Franklin
4. Consider Regional Water Supply and Treatment for Williamson County
5. Water withdrawals from the Harpeth should be limited during warm-weather months from June through October
6. Improve water quality in upper Harpeth River watershed
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NPDES SEWAGE TREATMENT PLANT PERMITS NPDES SEWAGE TREATMENT PLANT PERMITS
FOR FRANKLIN, LYNWOOD UTILITY AND FOR FRANKLIN, LYNWOOD UTILITY AND
CARTWRIGHT CREEK UTILITY WILL BE CARTWRIGHT CREEK UTILITY WILL BE
EVALUATED THIS FALL DURING THE RENEWAL EVALUATED THIS FALL DURING THE RENEWAL
PROCESSPROCESS