North Central Texas
North Central Texas
Water Quality Project
Water Quality Project
Objectives
Study of Eagle Mountain Watershed
Wastewater Treatment Plants
Robert Adams, PE
Alan Plummer Associates, Inc.
• Identify point source loads (wastewater treatment
plants) within the watershed.
• Assess current load, permit limits, and annual
variability.
• Evaluate 2050 projections of flow.
• Evaluate plant improvements needed to achieve:
◦ Level I—current permit limits.
◦ Level II—TN = 10 mg/L, TP = 1 mg/L.
◦ Level III—TN = 5 mg/L, TP = 0.5 mg/L.
• Develop cost estimates for each level of
improvement.
North Central Texas
North Central Texas
Water Quality Project
Water Quality Project
Eagle Mountain Wastewater Plants
Load and Permit Data—Azle (Nitrogen)
14
12
kg/day
10
8
6
4
2
e
Ju
ly
A
ug
us
Se
t
pt
em
be
r
O
ct
ob
er
N
ov
em
be
D
r
ec
em
be
r
ay
M
Ju
n
A
pr
il
ar
y
M
Fe
br
u
ar
y
nu
Ja
ar
ch
0
14 plants evaluated
North Central Texas
Water Quality Project
Water Quality Project
Load and Permit Data—Azle (Phosphorus)
2050 Population and Flow Projections
60,000
1.5
50,000
1
40,000
0.5
30,000
0
20,000
M
A
pr
i
Ju
ly
A
u
Se gus
t
pt
em
be
r
O
ct
ob
er
N
ov
em
be
D
r
ec
em
be
r
70,000
2
Ju
ne
80,000
2.5
l
90,000
3
ay
3.5
Ja
nu
ar
y
Fe
br
ua
ry
M
ar
ch
kg/day
North Central Texas
NH3
ON
NOx
SPRINGTOWN
RHOME
NEWARK
DECATUR
CHICO
BRIDGEPORT
BOYD
BOWIE
AZLE
ALVORD
10,000
OPO4
OP
0
2000
2010
2020
2030
2040
2050
1
North Central Texas
Water Quality Project
Plant Visits: Data Collection and
Process Evaluation
City of Alvord
Wastewater Treatment Plant
Oxidation Ditch
March 5, 2004
City of Alvord
Wastewater Treatment Plant
Sludge Drying Beds
March 5, 2004
City of Alvord
Wastewater Treatment Plant
Outfall
City of Alvord
Wastewater Treatment Plant
Clarifier
March 5, 2004
City of Alvord
Wastewater Treatment Plant
Clarifiers
March 5, 2004
March 5, 2004
2
North Central Texas
North Central Texas
Water Quality Project
Water Quality Project
Plant Process Evaluation (Alvord)
Eagle Mountain: 2050 N Loads
City or Facility
Current
Load
(lb/day)
13
23
97
5
53
13
58
1
3
1
4
3
3
16
293
Loads at 2050 Flows (lbs/day)
Level I
23
96
101
11
116
36
92
38
29
82
52
676
Level II
14
264
47
15
107
23
88
33
18
79
58
745
Level III
7
132
23
8
53
11
44
16
9
40
29
373
Increase or (Decrease) from Current Load
383
452
80
Increase or (Decrease) in tons/yr
70
82
15
Alvord
Azle
Bowie
Boyd
Bridgeport
Chico
Decatur
Ft Worth Boat Club
Garrett Creek Ranch
Larry Buck RV Park
Newark
Paradise ISD
Rhome
Springtown
Total Loads
*Current and Level I loads based on average effluent concentration determined by nutrient testing
North Central Texas
North Central Texas
Water Quality Project
Water Quality Project
Eagle Mountain: 2050 TP Loads
City or Facility
Current
Load
(lb/day)
5
3
15
1
10
5
13
0.2
0.4
0.1
1
1
1
4
60
Eagle Mountain: Cost Summary
Loads at 2050 Flows (lbs/day)
Level I
9
14
16
3
22
14
20
12
11
18
13
149
Level II
1
26
5
2
11
2
9
3
2
8
6
75
Level III
1
13
2
1
5
1
4
2
1
4
3
37
Increase or (Decrease) from Current Load
89
15
(23)
Increase or (Decrease) in tons/yr
16
3
(4)
Alvord
Azle
Bowie
Boyd
Bridgeport
Chico
Decatur
Ft Worth Boat Club
Garrett Creek Ranch
Larry Buck RV Park
Newark
Paradise ISD
Rhome
Springtown
Total Loads
*Current and Level I loads based on average effluent concentration determined by nutrient testing
City or Facility
Alvord
Azle
Bowie
Boyd
Bridgeport
Chico
Decatur
Ft. Worth Boat Club
Garrett Creek Ranch
Larry Buck RV Park
Newark
Paradise ISD
Rhome
Springtown
Total Costs
Costs Associated with Upgrades
Level I
$1,808,352
$13,544,093
$0
$0
$5,765,861
$2,056,421
$8,390,290
$0
$0
$0
$3,106,656
$2,137,565
$8,063,395
$4,750,402
$49,623,034
Level II
$51,005
$255,024
$51,005
$102,010
$127,512
$51,005
$127,512
$0
$0
$0
$51,005
$51,005
$51,005
$51,005
$969,091
Level III
$579,600
$1,761,984
$835,783
$586,555
$840,420
$630,605
$840,420
$0
$0
$0
$672,336
$605,102
$835,783
$835,783
$9,024,372
3