Bill Bowlby, Ph.D., P.E., Bowlby & Associates, Inc.Doug Barrett, Sanchez Industrial Design Inc.
Gonzalo Sanchez, Sanchez Industrial Design Inc.Clay Patton, Bowlby & Associates, Inc.
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Sanchez Industrial Design Inc.
Topics Introduction SP Section 699 and noise criteria Sound level sampling Site selection Monitoring results - baseline, construction and post-
construction Special investigation Summary and conclusions
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Sanchez Industrial Design Inc.
Roles West Virginia DOT Division of Highways (WVDOH)
Owner/client Michael Baker Jr., Inc.
Bridge design; task management and local support Bowlby
Review of contractor’s plan, management of data collection, conduct of baseline monitoring, monthly reporting of results, and special investigations as needed
SID Installation and operation of monitors, including data
transmittal, processing and storage
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Sanchez Industrial Design Inc.
Nitro and St. Albans, WV
Map credit: Google Maps
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Sanchez Industrial Design Inc.
Existing Bridge
Photo credit: Bing.com
St. Albans
Nitro
Photo credit: WVDOH FONSI
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Sanchez Industrial Design Inc.
Special Provision (SP) Section 699 Construction Noise Impacts Specified use of construction sound level criteria in
the Federal Transit Administration’s (FTA) Transit Noise and Vibration Impact Assessment manual
Required contractor to submit Noise Mitigation Plan and designate a Noise Mitigation Representative
Required mitigation measures to meet FONSI commitments (micropiles or drilled caissons; mufflers; meeting EPA equipment standards)
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Sanchez Industrial Design Inc.
Noise Criteria Chapter 12 of the FTA manual Longer-term impact: 30-day (monthly) energy-average
of the daily Day-Night Levels (DNL) of 70 dBA Shorter-term residential impact criteria
One-hour equivalent sound level (Leq) of 90 dBA during the day and 80 dBA at night, and
Eight-hour Leq of 80 dBA (day) and 70 dBA (night) Day: 7 a.m. to 10 p.m.; night: 10 p.m. to 7 a.m.
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Sanchez Industrial Design Inc.
Sound Level Sampling
Larson-Davis LD-820 Noise Monitor with EcoEARS data logger at each site
Wind speed and direction data collected at one site with Gill WindObserver II ultrasonic sensor
One-second A-weighted sound level data collected using “slow” response
Data transmitted to SID’s server via cellular modem, processed, and made available for daily download by Bowlby
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Data Presentation
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Monitoring Site Selection Four monitors
installed in community locations in both Nitro (SAT and FEN) and St. Albans (HIG and MAR)
Two residential sites, one near school athletic field, one at marina
Photo credit: Google Maps
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Sanchez Industrial Design Inc.
Site SAT: Residence at 1434 Sattes Circle, Nitro Located in backyard
along Nitro bridge approach
Microphone moved in April 2013 due to construction activities taking place in the backyard
Noise sources: traffic on the bridge, construction activities, and A/C equipment
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Sanchez Industrial Design Inc.
Site FEN: Residence at 1518 Fenton Circle, Nitro Microphone and wind
sensor mounted on roof deck of a boat house located next to the river
Noise sources: traffic on the bridge, boat traffic, construction activities, wind
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Sanchez Industrial Design Inc.
Site MAR: Marina at 418 1st Ave, St. Albans Microphone was
located behind marina shop facing the river and the bridge
Noise sources: traffic on the bridge, boat traffic, construction activities, marina activities
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Sanchez Industrial Design Inc.
Site HIG: St. Albans School Bus Terminal, St. Albans Microphone located next to
St. Albans School Bus Garage
Adjacent to school athletic field
Noise sources: traffic on the bridge, boat traffic, construction activities, bus garage activities, athletic activities
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70
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
Day-
Nig
ht L
evel
(DN
L), d
BA
Day of Month
February 2012
FEN SAT MAR HIG FTA 30-day Res'l Criterion
Baseline Noise Monitoring (DNL)17-day energy-averaged DNL:SAT: 66 dBAFEN: 62 dBAHIG: 62 dBAMAR: 61 dBA
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Construction Noise Monitoring Results – Site FEN
56
58
60
62
64
66
68
70
Mar
-12
Apr-
12M
ay-1
2Ju
n-12
Jul-1
2Au
g-12
Sep-
12O
ct-1
2N
ov-1
2D
ec-1
2Ja
n-13
Feb-
13M
ar-1
3Ap
r-13
May
-13
Jun-
13Ju
l-13
Aug-
13Se
p-13
Oct
-13
Nov
-13
Day
-Nig
ht L
evel
(DN
L), d
BA
Month
FEN
FEN Baseline
Monthly energy-averaged DNL
Post- construction
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Construction Noise Monitoring Results – Site SAT
56
58
60
62
64
66
68
70
Mar
-12
Apr-
12M
ay-1
2Ju
n-12
Jul-1
2Au
g-12
Sep-
12O
ct-1
2N
ov-1
2D
ec-1
2Ja
n-13
Feb-
13M
ar-1
3Ap
r-13
May
-13
Jun-
13Ju
l-13
Aug-
13Se
p-13
Oct
-13
Nov
-13
Day
-Nig
ht L
evel
(DN
L), d
BA
Month
SAT
SAT Baseline
Monthly energy-averaged DNL
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Construction Noise Monitoring Results – Site HIG
56
58
60
62
64
66
68
70
Mar
-12
Apr-
12M
ay-1
2Ju
n-12
Jul-1
2Au
g-12
Sep-
12O
ct-1
2N
ov-1
2D
ec-1
2Ja
n-13
Feb-
13M
ar-1
3Ap
r-13
May
-13
Jun-
13Ju
l-13
Aug-
13Se
p-13
Oct
-13
Nov
-13
Day
-Nig
ht L
evel
(DN
L), d
BA
Month
HIG
HIG Baseline
Monthly energy-averaged DNL
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Construction Noise Monitoring Results – Site MAR
56
58
60
62
64
66
68
70M
ar-1
2Ap
r-12
May
-12
Jun-
12Ju
l-12
Aug-
12Se
p-12
Oct
-12
Nov
-12
Dec
-12
Jan-
13Fe
b-13
Mar
-13
Apr-
13M
ay-1
3Ju
n-13
Jul-1
3Au
g-13
Sep-
13O
ct-1
3N
ov-1
3
Day
-Nig
ht L
evel
(DN
L), d
BA
Month
MAR
MAR Baseline
Monthly energy-averaged DNL
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Bridge opened Nov. 1, 2013
Photo credit: WVDOH
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Nitro Sites – Post-Construction
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St. Albans Sites – Post-Construction
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Post-Construction Monitoring
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
Day-
Nig
ht L
evel
(DN
L), d
BA
Day of Month
November 2013
FEN SAT MAR HIG FTA 30-day Res'l Criterion
30-day DNL:SAT: 61 dBA (-5 dB)FEN: 62 dBA (0 dB)HIG: 62 dBA (0 dB)MAR: 68 dBA (+7 dB*)* 5 days of unexplained high levels
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Special Investigation: Bridge Demolition, March 2013
Photo credit: WVDOH
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Sanchez Industrial Design Inc.Photo credits: WVDOH
Photo credits: WVDOH
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Summary Continuous sound level monitoring at four sites:
Seventeen days of pre-construction baseline monitoring Twenty months of construction monitoring One month of post-construction monitoring
Monthly-average construction DNLs varied above and below pre-construction levels
Compared to the FTA criteria: No exceedance of the 70 dBA monthly-average DNL Very few exceedances of the 1-hr and 8-hr daytime and
nighttime Leq criteria Post-construction traffic noise levels were reduced at the
Sattes Circle site
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Conclusions Monitoring was a success , meeting WVDOH’s objectives Site selection and installation went smoothly, with
excellent cooperation from property owners Data transmission, processing, daily downloading and
subsequent data analysis all went well Available features such as web cameras and triggered
audio recordings would allow more diagnostic work if needed
Access to the data web site could be given to the public
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Acknowledgements WVDOT Division of Highways
Ahmed N. K. Mongi, P.E., Engineering Division, Charleston, WV
Michael Baker Jr., Inc. Russell (Rusty) E. Hall, P.E., P.S., Assistant
Vice President, Charleston, WV Andy Kuchta, Coraopolis, PA
Bowlby & Associates, Inc. Lisa Rooks, Admin. Assistant Rennie Williamson, Project Engineer
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Sanchez Industrial Design Inc.
Questions? Photo credit: WVDOH
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