Massachusetts Water Resources Authority Thunderstorm Impacts on Wastewater System Operations July 17, 2019
Massachusetts Water Resources Authority
Thunderstorm Impacts on Wastewater System Operations
July 17, 2019
3
Thunderstorms
• Thunderstorms frequently occur in the afternoon and early evening during the late Spring and Summer months and their intensity and track are hard to predict
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Thunderstorm Staffing Preparations
Precautionary staffing necessary due to the unpredictable nature of thunderstorms
• Operations staff required at:
⁻ 3 CSO Treatment Facilities (Prison Point, Cottage Farm and Somerville Marginal)
⁻ 3 Northern Headworks (Chelsea Creek, Ward Street and Columbus Park)
⁻ 2 roving crews to respond to operational issues
• Maintenance staff stationed to address equipment issues in a timely manner at:
⁻ Chelsea Maintenance Facility, Chelsea Creek, Ward Street and Prison Point
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Severe Weather Outlook for June 29, 2019
National Weather Service Forecast:• Thunderstorms and showers• Chance of rain 60%
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Severe Thunderstorm Warning for Boston for Saturday June 29, 2019
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Rainfall Totals for June 29, 20190.38”
0.79”
0.74”
0.66”
1.82”
JUNE 29th THUNDERSTORM
Measured Area Rainfall:
Hayes PS: 0.38 inchesColumbus Pk HW: 0.66 inchesWard Street HW: 0.74 inches Hanscom: 0.79 inchesChelsea Creek HW: 1.82 inches
v Chelsea Admin Building Rain Gauge registered an instantaneous rainfall rateof 12.26 in/hr at 4:30 pm
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Severe Weather Outlook for Sunday, June 30, 2019
National Weather Service Forecast:• Thunderstorms and showers• Chance of rain 80%
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Severe Thunderstorm Warning for Sunday, June 30, 2019
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Rainfall Totals for Sunday, June 30, 2019
0.42”
0.16”
0.08”0.38”
0.19”
JUNE 30th THUNDERSTORM
Measured Area Rainfall:
Hayes PS: 0.42 inchesColumbus Pk HW: 0.38 inchesWard Street HW: 0.08 inches Hanscom: 0.16 inchesChelsea Creek HW: 0.19 inches
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Rainfall Totals From June 29th to July 1st
12
Chelsea Creek Headworks Flow
0
0.2
0.4
0.6
0.8
1
1.2
1.4
0
50
100
150
200
250
3001
2:15
:00
AM
1:3
0:00
AM
2:4
5:00
AM
4:0
0:00
AM
5:1
5:00
AM
6:3
0:00
AM
7:4
5:00
AM
9:0
0:00
AM
10:
15:0
0 A
M
11:
30:0
0 A
M
12:
45:0
0 P
M
2:0
0:00
PM
3:1
5:00
PM
4:3
0:00
PM
5:4
5:00
PM
7:0
0:00
PM
8:1
5:00
PM
9:3
0:00
PM
10:
45:0
0 P
M
12:
00:0
0 A
M
1:1
5:00
AM
2:3
0:00
AM
3:4
5:00
AM
5:0
0:00
AM
6:1
5:00
AM
7:3
0:00
AM
8:4
5:00
AM
10:
00:0
0 A
M
11:
15:0
0 A
M
12:
30:0
0 P
M
1:4
5:00
PM
3:0
0:00
PM
4:1
5:00
PM
5:3
0:00
PM
6:4
5:00
PM
8:0
0:00
PM
9:1
5:00
PM
10:
30:0
0 P
M
11:
45:0
0 P
M
RAIN
FALL
(IN
CHES
/15
MIN
)
FLO
W (M
GD
)CHELSEA CREEK HEADWORKS FLOWS
JUNE 29-30 2019
Chelsea Creek HW Rainfall Chelsea Creek HW Total Flow
1.6
0.19 0.14 in.
13
Ward Street Headworks Flow
0
50
100
150
200
250
300
12:1
5:00
AM
1:30
:00
AM
2:45
:00
AM
4:00
:00
AM
5:15
:00
AM
6:30
:00
AM
7:45
:00
AM
9:00
:00
AM
10:1
5:00
AM
11:3
0:00
AM
12:4
5:00
PM
2:00
:00
PM
3:15
:00
PM
4:30
:00
PM
5:45
:00
PM
7:00
:00
PM
8:15
:00
PM
9:30
:00
PM
10:4
5:00
PM
12:0
0:00
AM
1:15
:00
AM
2:30
:00
AM
3:45
:00
AM
5:00
:00
AM
6:15
:00
AM
7:30
:00
AM
8:45
:00
AM
10:0
0:00
AM
11:1
5:00
AM
12:3
0:00
PM
1:45
:00
PM
3:00
:00
PM
4:15
:00
PM
5:30
:00
PM
6:45
:00
PM
8:00
:00
PM
9:15
:00
PM
10:3
0:00
PM
11:4
5:00
PM
0
0.2
0.4
0.6
0.8
1
1.2
1.4
FLO
W (M
GD
)
RAIN
FALL
(IN
CHES
/15
MIN
)
WARD STREET HEADWORKS FLOWJUNE 29-30 2019
Ward Street HW Rainfall Ward Street HW Total Flow
14
Prison Point CSO Inlet Elevation
0
0.2
0.4
0.6
0.8
1
1.2
1.4
80
85
90
95
100
105
110
12:
15:0
0 A
M
1:1
5:00
AM
2:1
5:00
AM
3:1
5:00
AM
4:1
5:00
AM
5:1
5:00
AM
6:1
5:00
AM
7:1
5:00
AM
8:1
5:00
AM
9:1
5:00
AM
10:
15:0
0 A
M
11:
15:0
0 A
M
12:
15:0
0 P
M
1:1
5:00
PM
2:1
5:00
PM
3:1
5:00
PM
4:1
5:00
PM
5:1
5:00
PM
6:1
5:00
PM
7:1
5:00
PM
8:1
5:00
PM
9:1
5:00
PM
10:
15:0
0 P
M
11:
15:0
0 P
M
12:
15:0
0 A
M
1:1
5:00
AM
2:1
5:00
AM
3:1
5:00
AM
4:1
5:00
AM
5:1
5:00
AM
6:1
5:00
AM
7:1
5:00
AM
8:1
5:00
AM
9:1
5:00
AM
10:
15:0
0 A
M
11:
15:0
0 A
M
12:
15:0
0 P
M
1:1
5:00
PM
2:1
5:00
PM
3:1
5:00
PM
4:1
5:00
PM
5:1
5:00
PM
6:1
5:00
PM
7:1
5:00
PM
8:1
5:00
PM
9:1
5:00
PM
10:
15:0
0 P
M
11:
15:0
0 P
M
RA
INFA
LL (
INC
HE
S/1
5 M
IN)
LEV
EL
(FE
ET
MD
C)
PRISON POINT CSO INLET LEVEL
JUNE 29-30 2019
Chelsea Creek HW Rainfall Prison Point Inlet Structure Level
0.14
in.
1.67
in.
0.19
in.
15
Somerville Marginal CSO Inlet Elevation
0
0.2
0.4
0.6
0.8
1
1.2
1.4
101
102
103
104
105
106
107
108
109
110
111
12:
15:0
0 A
M
1:1
5:00
AM
2:1
5:00
AM
3:1
5:00
AM
4:1
5:00
AM
5:1
5:00
AM
6:1
5:00
AM
7:1
5:00
AM
8:1
5:00
AM
9:1
5:00
AM
10:
15:0
0 A
M
11:
15:0
0 A
M
12:
15:0
0 P
M
1:1
5:00
PM
2:1
5:00
PM
3:1
5:00
PM
4:1
5:00
PM
5:1
5:00
PM
6:1
5:00
PM
7:1
5:00
PM
8:1
5:00
PM
9:1
5:00
PM
10:
15:0
0 P
M
11:
15:0
0 P
M
12:
15:0
0 A
M
1:1
5:00
AM
2:1
5:00
AM
3:1
5:00
AM
4:1
5:00
AM
5:1
5:00
AM
6:1
5:00
AM
7:1
5:00
AM
8:1
5:00
AM
9:1
5:00
AM
10:
15:0
0 A
M
11:
15:0
0 A
M
12:
15:0
0 P
M
1:1
5:00
PM
2:1
5:00
PM
3:1
5:00
PM
4:1
5:00
PM
5:1
5:00
PM
6:1
5:00
PM
7:1
5:00
PM
8:1
5:00
PM
9:1
5:00
PM
10:
15:0
0 P
M
11:
15:0
0 P
M
RA
INFA
LL (
INC
HE
S/1
5 M
IN)
LEV
EL
(FE
ET
MD
C)
SOMERVILLE MARGINAL CSO INLET LEVEL
JUNE 29-30 2019
Somerville Remote Rain Gauge Somerville Marginal Inlet Level
0.97
0.39 0.16
in.
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Massachusetts Water Resources Authority
Deer Island Treatment PlantMaintenance Coating Contract
July 17, 2019
• Painting/coating/concrete and steel repairs in several areas of the Deer Island Treatment Plant:
– Primary Scum Building Scum Wells (8 Total)– Odor Control Facilities Carbon Adsorbers (6 Total)– Module 3 Digester Overflow Boxes (4 Total)
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Contract S583 Scope of Services Summary
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Contract S583 Scum Well Scope
Mixer
Mixer
Scum Well Below
• 4 Primary Batteries each with 2 Scum Wells for a total of 8 Scum Wells
22
S583 Odor Control Facility Carbon Adsorber Scope
• East and West Odor Control Facility - 5 Carbon Adsorbers• Residuals Odor Control Facility - 1 Carbon Adsorber
6 Total
S583 Module 3 Digester Overflow Box Scope
Four (4) Overflow Boxes Total
Advertised and bid in accordance with Chapter 149 of the Massachusetts General laws. Bids were opened June 11, 2019:
Atlas Painting And Sheeting Co. $2,020,000*Engineer’s Estimate $2,275,000Soep Painting Corporation $2,495,000John W. Egan Co. Inc. $3,508,990* Atlas bid was deemed non-responsive as it did not include the DCAMM Update Statement
Based on the bid evaluation, Soep Painting Corporation was found to be the lowest responsible and eligible bidder
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Contract S583 Procurement Summary
Massachusetts Water Resources Authority
Piping Relocation at the Pelletizing Plant
July 17, 2019
MWRA Pellet Plant
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• Process liquid digested sludge from Deer Island – 105 dry tons sludge daily
• Markets and distributes 31,000 tons pellets annually
• On-site storage for 5,000 tons of dried pellets
• Five adjacent silos
• Four remote silos connected by pipe conveyance system
MWRA Pellet Plant Layout
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Remote Silos
Adjacent Silos
Building 11
Sludge Receiving Tanks
Building 11 Pellet Piping Transfer Lines
29
Adjacent Silos
Building 11
Transfer Lines
Remote Silos
Transfer Lines
Partial roof collapse
Building 11 Demolition – September 2018
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Post Demolition – Building 11
31
New Transfer Line Route
• Loss of access to remote silos reduces on-site storage by 45%
• Board approved Amendment 2 to NEFCO Contract for increased expenses-January 2019
• This Contract will install a new pellet conveyance piping system on dedicated supports
Contract 7173
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• Bids Received:
1. Walsh Construction Co. II, LLC $4,250,445.002. William M. Collins Co., Inc. $5,658,061.003. IPC Lydon, LLC $6,187,762.004. Engineer’s Estimate $3,200,000.00
• Contractor: Walsh Construction Co. II, LLC (lowest responsive bidder)
• Contract Duration: 450 days
Massachusetts Water Resources Authority
Bellevue 2 and Turkey Hill Steel Tank Painting
July 17, 2019
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Bellevue 2 and Turkey Hill Water Tank Painting
Turkey HillArlington
Bellvue 2, West Roxbury
Chelsea
36
Turkey Hill Foundation Repair Contract Repair Limits
water tank
foundation
3” depth of concrete removal
20”
36”
37
Demolition of Deteriorated Concrete on Foundation
20”
36”
Water tank
Steel rebar
38
“Test” section to determine extent of demo required
20”
36”
Original concrete
Repair mortar
Steel rebar
Wire mesh reinf.
Water tank
39
Foundation Core Samples
Originalconcrete
Repair mortar coating
Six concrete core samples taken2 ¾” diameter, up to 8” depth
40
Final Foundation Repair Detail
Water tank
6” depth
4” depth
41
Bellevue 2 “Robot” Paint Removal
November 2018
Vacuum hose
Original coating
Robot paint remover
42
Bellevue 2 Interior surface
October 2018March 2019
Failure of previous coating
Operating water level
43
Bellevue 2 Ceiling Final Coating Complete
March 2019
44
Bellevue 2 Before and After
September 2018
April 2019
45
Bellevue 2 MWRA Drone View
46
Bellevue 1 and 2
47
Turkey Hill Tank Antennas, February 2019
Arlington FDArlington PDArmstrong AmbulanceLifeline AmbulanceMassDOTMass State PoliceVerizonT-MobileSprintCingularAT&TFederal AgencyMWRA
48
Turkey Hill Water Tank “Robot” Paint Removal
Robot paint remover
Primer coating
Bare Steel
Original Coating
49
Turkey Hill Exterior Finish Coating Complete
June 2019
50
Turkey Hill Water Tank Interior Ceiling and Wall at Finish Coating