Transcript colowqforum.org

2005 SSOs reported to WQCD: A
Cursory Data Scan
Ravi Srivastava, Ph.D., P.E.
Boxelder Sanitation District, Ft. Collins, CO
Gary Soldano, P.E.
CDPHE-WQCD, Pueblo, CO
14 Sept. 2006
WQF-Spills workgroup
1
• Data Source: Gary Soldano, CDPHEWQCD Pueblo Office, Pueblo
– [email protected]
– 719-545-4650; fax 719-543-8441
• Data Analysis: Ravi Srivastava, Boxelder
Sanitation District, Ft. Collins
– [email protected]
– 970-498-0604; fax 970-498-0701
14 Sept. 2006
WQF-Spills workgroup
2
This Presentation
• Cursory analysis of 2005 SSO information
• Attempting to ask questions like:
–
–
–
–
–
–
When
How much volume discharged
For how long
How did it occur
Where
Who
14 Sept. 2006
WQF-Spills workgroup
3
Analyses
• Accepted data as is
• Did not examine data for completeness or
accuracy
• Simple sorts/analyses to obtain answers to
fundamental questions
• All analytical errors are responsibility of
Ravi Srivastava
14 Sept. 2006
WQF-Spills workgroup
4
Reporting a Spill
• CDPHE Toll-Free 24-hour Environmental
Emergency Spill Reporting Line
1-877-518-5608
• On-call responder calls and asks questions
• Follow-up with forms to provide detailed
information to WQCD
14 Sept. 2006
WQF-Spills workgroup
5
14 Sept. 2006
WQF-Spills workgroup
6
14 Sept. 2006
WQF-Spills workgroup
7
14 Sept. 2006
WQF-Spills workgroup
8
How Many SSOs? When?
• 203 SSOs reported during calendar year
2005
• Lowest # spills in June, July and August;
no pattern in total volume of spills by
season.
14 Sept. 2006
WQF-Spills workgroup
9
2005: Cumulative No. Reported SSOs
250
Cumulative # SSOs
200
150
100
50
0
1-Jan
31-Jan
2-Mar
1-Apr
1-May
31-May 30-Jun
30-Jul
29-Aug 28-Sep 28-Oct 27-Nov 27-Dec
Date
14 Sept. 2006
WQF-Spills workgroup
10
2005 SSO Reports: Timing of Spill
30
26
25
21
No. Events
20
21
20
19
19
18
18
16
15
13
10
7
5
5
0
J
F
M
A
M
J
J
A
S
O
N
D
Month
14 Sept. 2006
WQF-Spills workgroup
11
14 Sept. 2006
WQF-Spills workgroup
12
How Much Spilled?
• Volume from 2/3 gallon to over 2 million
gallons; 12 reported with unknown volume
• 40% of SSOs in the 101-1000 gallons
range, 30% in the 11-100 range.
14 Sept. 2006
WQF-Spills workgroup
13
2005: Cumulative Volume of Reported SSOs
7000000
Cumulative # SSOs
6000000
5000000
4000000
3000000
2000000
1000000
0
1-Jan
31-Jan
2-Mar
1-Apr
1-May 31-May 30-Jun 30-Jul 29-Aug 28-Sep 28-Oct 27-Nov 27-Dec
Date
14 Sept. 2006
WQF-Spills workgroup
14
2005: Volume of Reported SSOs
2,500,000
Volume (gallons)
2,000,000
1,500,000
1,000,000
500,000
1-Jan 31-Jan 2-Mar
1-Apr
1-May 31-May 30-Jun 30-Jul 29-Aug 28-Sep 28-Oct 27-Nov 27-Dec
Date
14 Sept. 2006
WQF-Spills workgroup
15
2005: Volume of Reported SSOs
10,000,000
1,000,000
Volume (gallons)
100,000
10,000
1,000
100
10
1
1-Jan 31-Jan 2-Mar
1-Apr
1-May 31-May 30-Jun 30-Jul 29-Aug 28-Sep 28-Oct 27-Nov 27-Dec
0
Date
14 Sept. 2006
WQF-Spills workgroup
16
2005: Frequency Distribution, Volume of Reported
SSOs
0.1
14 Sept. 2006
1
10
100
1000
10000
WQF-Spills workgroup
100000 1000000 1000000
0
17
2005 SSO Reports: Volume of Spill
90
79
80
70
60
No. Events
60
50
40
30
23
20
13
10
2
12
7
5
2
0
0-1
2 - 10
11 - 100
101 - 1000
1001 - 10000
10001 100000
100001 1000000
1000001 10000000
unknown
Volume Ranges (gallons)
14 Sept. 2006
WQF-Spills workgroup
18
2005 SSO Reports: Volume of Spill
unknown
6%
1000001 - 10000000
1%
0 - 21 - 10
1% 2%
100001 - 1000000
3%
10001 - 100000
6%
11 - 100
30%
1001 - 10000
11%
101 - 1000
40%
14 Sept. 2006
WQF-Spills workgroup
19
2005 SSO Reports: Timing of Spill
5,000,000
4,500,000
4,290,139
4,255,824
Volume spilled (gallons)
4,000,000
3,500,000
3,000,000
2,798,300
2,686,050
2,500,000
2,154,730
2,000,000
1,597,990
1,500,000
1,000,000
500,000
142,570
814,040
765,065
753,545
275,820
264,930
J
F
M
A
M
J
J
A
S
O
N
D
Month
14 Sept. 2006
WQF-Spills workgroup
20
2005 SSO Reports: Volume of Spills, by Time
J
1%
F
1%
D
8%
M
10%
A
1%
N
21%
M
13%
J
4%
O
4%
J
13%
S
20%
14 Sept. 2006
A
4%
WQF-Spills workgroup
21
How Did It Happen?
• Haven’t had time to analyze thoroughly
• Performed quick search for frequency of
occurrence of key words
–
–
–
–
–
–
–
Block/blockage 73
Grease
34
Lift station
27
Roots
17
Basement
17
Construction 11
Plug
11
14 Sept. 2006
WQF-Spills workgroup
22
Spill Duration?
• Duration known for < 10% of reported
events
• Vast majority of unknown duration
• Known duration range from < 1 hr to > 100
hr
14 Sept. 2006
WQF-Spills workgroup
23
2005 SSO Reports: Duration of Spill
200
187
180
Number of Events
160
140
120
100
80
60
40
15
20
1
0
Unknown
Ongoing
Known
Duration of Events (Hours)
14 Sept. 2006
WQF-Spills workgroup
24
2005 SSO Reports: Duration of Spill
8
7
7
6
Number of Events
6
5
4
3
2
1
1
10 - 100
100 - 250
1
0
0-1
1 - 10
Duration of Events (Hours)
14 Sept. 2006
WQF-Spills workgroup
25
Where?
• El Paso, Arapahoe, Douglas, Adams, Weld
counties are the top 5 by no. spills
• El Paso, Arapahoe, Gunnison, Larimer, and
Las Animas are the top 5 by spill volumes
14 Sept. 2006
WQF-Spills workgroup
26
14 Sept. 2006
WQF-Spills workgroup
0
12
2
County
27
Yuma
15
Weld
1 1
Teller
2
Summit
1
San Juan
3
Routt
1 1 1
Rio Blanco
11
Pueblo
Pitkin
Park
1
Morgan
5
Montrose
8
Montezuma
1
Montezuma
1
Moffat
9
Mesa
8
Las Animas
4
Larimer
3
Lake
12
La Plata
10
Jefferson
5
Gunnison
5
Grand
1
Gilpin
Garfield
2
Fremont
1
Elbert
15
El Paso
17
Douglas
2
Delta
1 1
Clear Creek
Chaffee
1
Broomfield
Boulder
Baca
Arapahoe
Adams
SSOs Reported
2005: Number of Reported SSOs
30
25
25
20
16
13
8
6
1
0
14 Sept. 2006
WQF-Spills workgroup
1
1
1
1
1
1
1
1
1
Broomfield
Chaffee
Delta
Fremont
Gilpin
Lake
Montezuma
Morgan
Park
Pitkin
Rio Blanco
1
1
1
Yuma
1
Summit
1
San Juan
1
Baca
2
Teller
2
Routt
2
Elbert
Clear Creek
3
Moffat
Grand
5
Gunnison
5
Larimer
Garfield
Montrose
8
Montezuma
8
Mesa
Jefferson
10
Las Animas
La Plata
Pueblo
Boulder
15
Weld
Adams
Douglas
Arapahoe
El Paso
SSOs Reported
2005: Number of Reported SSOs
30
25
25
20
17
16
15
13
12 12
11
9
8
6
5
4
3
2
County
28
14 Sept. 2006
WQF-Spills workgroup
1
1,280
700
1,000
4,100
4,280
County
29
Yuma
3,470
800
500
300
568,950
750,100
2,701,524
1,209,820
282,810
85,000
56,975
17,600
11,065
5,700
1,950
1,620
1,200
Weld
100
100
14,325
50,000
40,000
11,000
6,000
3,000
10
Teller
Summit
San Juan
Routt
Rio Blanco
Pueblo
Pitkin
Park
Morgan
Montrose
Montezuma
50
100
Montezuma
Moffat
Mesa
Las Animas
Larimer
Lake
La Plata
Jefferson
25
4,100
1,000,000
Gunnison
Grand
Gilpin
Garfield
Fremont
Elbert
El Paso
Douglas
Delta
Clear Creek
Chaffee
Broomfield
500
10,000
Boulder
1,000
Baca
100,000
48,185
10,000,000
Arapahoe
Adams
SSOs Reported
2005: Volume of Reported SSOs
1
14 Sept. 2006
WQF-Spills workgroup
50
100
Morgan
County
30
Pitkin
Lake
Broomfield
Montezuma
100
Fremont
300
500
San Juan
Moffat
500
Baca
800
700
1,000
Park
Routt
1,200
Gilpin
Summit
1,280
Montezuma
1,620
Grand
3,470
3,000
Weld
Teller
1,950
4,100
Rio Blanco
La Plata
4,100
4,280
Boulder
Montrose
5,700
Garfield
11,000
6,000
Elbert
11,065
Jefferson
14,325
Clear Creek
Douglas
17,600
40,000
Chaffee
Mesa
48,185
Adams
10
56,975
25
100
50,000
1,000
Delta
10,000
Pueblo
568,950
282,810
85,000
100,000
Yuma
Las Animas
Larimer
1,209,820
750,100
1,000,000
Gunnison
Arapahoe
2,701,524
10,000,000
El Paso
Volume of SSOs Reported
2005: Volume of Reported SSOs
Who?
• Top 5 entities with highest no. of SSOs reported
–
–
–
–
–
Colorado Springs Utilities,
City of Durango,
Cortez Sanitation District,
City of Evans, and
City of Trinidad
• 12 events were reported with unknown volume of
SSOs
14 Sept. 2006
WQF-Spills workgroup
31
14 Sept. 2006
0
WQF-Spills workgroup
2
2
2
2
2
2
2
Boulder, City of
Brighton, City of - Utilities
Central Grand Valley
Sanitation
Fort Collins, City of
Grand Junction, City of
Greeley, City of
Longmont, City of
2
2
Widefield Water &
Sanitation District
2
U. S. Army - Fort Carson
2
Boone, Town of
2
Aurora, City of
3
Thornton, City of
3
Mt. Crested Butte Water
and Sanitation
3
Metro Wastewater
Reclamation District
3
East Cherry Creek Valley
Water & Sanitation
3
Castle Rock, Town of
4
Brighton, City of
4
Unknown
Parker Water & Sanitation
District
6
Pueblo, City of
Montrose, City of
8
Trinidad, City of
9
Evans, City of
10
Cortez Sanitation District
Durango, City of
Colorado Springs Utilities
SSOs Reported
2005: Number of Reported SSOs
20
18
18
16
14
12
10
9
7
6
5
4
3
Entity
32
Who?
• Top 5 entities with highest volume of SSOs
reported
–
–
–
–
–
US Army-Ft. Carson,
East Cherry Creek Water and San,
Mt. Crested Butte Water and San.,
Colorado Springs Utilities,
Ft. Collins Utilities Water Treatment
• 12 events were reported with unknown volume of
SSOs
14 Sept. 2006
WQF-Spills workgroup
33
-
14 Sept. 2006
50,000
43,600
Cedaredge, Town of
Brighton, City of
WQF-Spills workgroup
3,000
3,000
2,700
2,500
2,280
2,000
Glenwood Springs, City of
Woodland Park, Town of
Coors Brewery Co.
Boulder, City of
Parker Water & Sanitation District
Westminster, City of
5,000
Gold Creek Wastewater Treatment Plant
4,100
5,000
Georgetown, Town of
Meeker Sanitation District
5,800
Pueblo, City of
4,280
6,000
HCL Engineering
Montrose, City of
6,000
10,000
Roxborough Park Metro District
Eco Resources, Inc.
12,600
14,000
Widefield Water & Sanitation District
Town of Fruita
40,000
50,300
Boone, Town of
Buena Vista Sanitation District
85,000
150,300
200,000
282,760
417,000
Yuma, City of - Public Works
Fort Collins, City of
Security Sanitation District
Trinidad, City of
Ft. Collins Utilities Water Treatment
487,224
500,000
Colorado Springs Utilities
750,000
1,000,000
Mt. Crested Butte Water and Sanitation
1,205,050
1,500,000
East Cherry Creek Water and Sanitation District
2,000,000
2,000,500
2,500,000
U. S. Army - Fort Carson
Volume Reported (gal.)
2005: Volume of Reported SSOs
Entity
34
Looking Back
• Cursory analysis
• Know a bit about when, where, how SSOs
occurred, how much spilled, duration of SSO,
responsible party
• Data probably a partial subset of actual SSOs
• Suspect
– underreporting on occurrence [see next graph]
– error in volume/duration
14 Sept. 2006
WQF-Spills workgroup
35
Reported SSOs in WQCD Database
250
192 203
200
153
164
150
100
79
88
52
50
1
0
0
0
2
6
23
1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 16Aug06
14 Sept. 2006
WQF-Spills workgroup
36