Bill Bowlby, Ph.D., P.E., Bowlby & Associates, Inc. Doug ... TRB14.pdf · Sanchez Industrial Design...

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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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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Nitro and St. Albans, WV

Map credit: Google Maps

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Existing Bridge

Photo credit: Bing.com

St. Albans

Nitro

Photo credit: WVDOH FONSI

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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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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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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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Sanchez Industrial Design Inc. 10


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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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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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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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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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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55

60

65

70

75

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


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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


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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


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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

50

55

60

65

70

75

80

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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Sanchez Industrial Design Inc. 28


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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Questions? Photo credit: WVDOH

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Bill Bowlby, Ph.D., P.E., Bowlby & Associates, Inc. Doug ... TRB14.pdf · Sanchez Industrial Design...

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