ENVIRONMENTAL NOISE ASSESSMENT LAKEVIEW BOULEVARD ENVIRONMENTAL ASSESSMENT LAKEVIEW BOULEVARD BETWEEN POPLAR AVENUE AND MAPLE AVENUE TOWN OF AJAX PREPARED FOR: TMIG February 2017 Y1610
TABLE OF CONTENTS PAGE 1.0 INTRODUCTION... 1 2.0 ENVIRONMETAL NOISE GUIDELINES... 2 3.0 NOISE SENSITIVE AREAS... 3 4.0 NOISE ASSESSMENT... 4 5.0 CONSTRUCTION NOISE... 6 7.0 CONCLUSION... 7 8.0 REFERENCES... 8 FIGURES FIGURE 1 FIGURE 2 FIGURE 3 STUDY AREA EXISTING LAKEVIEW BOULEVARD ROAD LAYOUT LAKEVIEW BOULEVARD UPPER ROAD ALIGNMENT TABLES TABLE 1 TABLE 2 TABLE 3 TABLE 4 IMPACT OF INCREASED SOUND EXPOSURES RECEIVER LOCATIONS EXISTING TRAFFIC INFORMATION SUMMARY OF CALCULATED SOUND LEVEL RESULTS APPENDICES APPENDIX 1... TRAFFIC DATA APPENDIX 2... STAMSON 5.04 SOUND LEVEL CALCULATIONS
1.0 INTRODUCTION This report has been prepared in support of the Class EA for the Lakeview Boulevard realignment between Poplar Avenue and Maple Avenue in the Town of Ajax. Lakeshore Boulevard has been proposed to be reconstructed to a single two-way road on upper alignment. This report evaluates the noise impact from the proposed upper road alignment and considers noise mitigation requirements as per the Ministry of Transportation (MTO) and the Ministry of Environment and Climate Change (MOECC) protocols. The location of the study area is indicated in the Figure 1 below. FIGURE 1 - STUDY AREA Lakeview Boulevard EA 1 Environmental Noise Assessment
2.0 ENVIRONMENTAL NOISE GUIDELINES Sound levels are predicted in decibels in the A-weighted dba scale, which is the closest to a human perception of sound over a specified time period. For the purposes of assessing municipal roadway noise, Leq is calculated on the basis of the 24 hour daytime period, 7:00 a.m. to 11:00 p.m. For Outdoor Living Areas (OLAs), the objective is 55dBA for the daytime period. Sound exposures were calculated using STAMSON V5.04 ORNAMENT, the computer road traffic noise prediction model of the MOE as accepted by MTO. Based on MOE protocol with the MTO, where a new or expanded roadway is proposed adjacent to a Noise Sensitive Area, the MOE requires that the future sound level be compared before and after expansion or improvements. The objective of noise mitigation is to reduce sound level as close or lower than the Provincial objective of 55dBA or the pre-construction ambient sound levels as technically, administratively or economically feasible. Noise mitigation options include the use of noise walls, berms, vertical and horizontal alignment shifts, road cuts and the use of quieter road pavement surfaces. Changes to the sound exposure are considered insignificant for 0 to 3 dba differences; just noticeable and minor for 4 to 5 dba differences; and significant for 10 dba or more sound level differences. No mitigation measures are required for sound exposure increases of 0 to 5dBA.Table 1 below shows the significance of the increased sound exposures: TABLE 1- IMPACT OF INCREASED SOUND EXPOSURES EXCESS ABOVE SOUND LEVEL CRITERION (dba) CHANGE IN LOUDNESS RATING OF NOISE IMPACT 0 to 3 No Change Insignificant 4 to 5 Perceptible Change Low 6 to 9 Almost Twice as loud Medium 10 and more Doubling of loudness or greater High For sound level increases greater than 5 dba, the following can be considered: Investigate noise control measures on the right-of-way; Noise control measures, where introduced, should achieve a minimum of 5dBA attenuation over the first row receivers; and Noise control measures should be designed to achieve sound levels as close to, or lower than, the objective level of 55dBA or the preconstruction ambient noise levels as is technically or economically feasible. Lakeview Boulevard EA 2 Environmental Noise Assessment
3.0 NOISE SENSITIVE AREAS Noise Sensitive Areas (NSA) are defined as a building that has an outdoor recreational and living areas such as residential developments. For this study, five (5) receiver locations were assessed with existing residential on both sides of Lakeview Boulevard realignment area. The receiver locations indicated on the attached Figure 2 are considered to be the noise sensitive land uses within the study area. All receivers are taken to be 1.5m above the ground and 3.0m from the rear of the buildings and/or the most exposed side of the dwelling units. Residential developments at similar setbacks and orientation are expected to have the similar sound exposures and residential developments further from the noise source are expected to have lower sound exposures due to distance attenuation. TABLE 2 - RECEIVER LOCATIONS RECEIVER ID R1 R2 R3 R4 R5 LOCATION DESCRIPTION Existing residential northwest of Lakeview Boulevard and Maple Avenue Existing residential southwest of Ebony Street and Maple Avenue Existing residential north of Ebony Road between Poplar Avenue and Maple Avenue Existing residential southeast of Ebony Street and Poplar Avenue Existing residential northeast of Lakeview Boulevard and Poplar Avenue Lakeview Boulevard EA 3 Environmental Noise Assessment
4.0 NOISE ASSESSMENT Lakeview Boulevard is currently a two-lane Local Road from Poplar Avenue to Maple Avenue with a posted speed of 40 km/h. Lakeview Boulevard is proposed to be reconstructed to the upper road alignment as shown on Figure 3. The traffic volume for Lakeview Boulevard is not expected to change with the single twoway road on the upper alignment. The 24 hour traffic volumes were calculated at each receptor locations from the projected AM/PM peak hour volumes to determine the Annual Average Daily Traffic (AADT). To assess the noise impact, the sound exposures from the existing road layout was compared to the sound exposures with the proposed Upper road alignment. Noise modelling was carried out for the following scenarios: Sound Levels - Current road layout Sound Levels - With Lakeview Boulevard Upper Road Alignment The road traffic data is summarized in Table 3. TABLE 3 - EXISTING TRAFFIC INFORMATION* LAKEVIEW BOULEVARD EXISTING AADT EXISTING POSTED SPEED LIMIT (km/h) EXISTING TRUCK PERCENTAGE (%) Lakeshore Boulevard 1100 40 1.5 Between Poplar Avenue and Maple Avenue * AADT volumes for Lakeview Boulevard Upper Road Alignment are expected to remain the same as the existing road layout AADT. Lakeview Boulevard EA 4 Environmental Noise Assessment
The following Table 4 shows the existing sound exposures for each receptor locations and the sound exposures for the existing road layout and with the proposed road upper alignment. TABLE 4 - SUMMARY OF CALCULATED SOUND LEVEL RESULTS RECEPTOR* PROJECTED SOUND LEVEL Leq (dba) EXISTING ROAD CONDITION WITH UPPER ROAD ALIGNMENT PROJECTED DIFFERENCE** (dba) NOISE MITIGATION REQUIRED R1 34.7 35.4 +0.9 No R2 29.4 30.5 +1.1 No R3 28.7 31.7 +3.0 No R4 28.3 28.6 +0.3 No R5 31.0 31.0 0 No * Receptor locations shown on Figure 2. ** Difference between the current road condition and the upper road realignment. As per the MOECC and MTO Noise Protocols, noise mitigation is not required for any of the model receiver locations as a result of the proposed road realignment since the change in sound levels is less than 5 dba. Lakeview Boulevard EA 5 Environmental Noise Assessment
6.0 CONSTRUCTION NOISE Construction noise is temporary and depends on the type of work, type of equipment used, the number and frequency of equipment construction used, time and duration of operation and the proximity to the noise sensitive receptors. Construction noise constraints should be incorporated into the contract documents as per the MTO/MOECC Noise Protocol requirements. The equipment shall be maintained in an operating condition that prevents unnecessary noise, including but not limited to non-defective muffling systems, properly secured components and the lubrication of moving parts. Idling of equipment shall be restricted to the minimum necessary to perform the specified work. Any construction activities should conform to current local municipal noise by-laws considering the time of day, proximity, type of operation and equipment. Exemptions, where required will be applied for through the municipality and should be included in the construction contract documents. Lakeview Boulevard EA 6 Environmental Noise Assessment
7.0 CONCLUSION The noise assessment compared the existing Lakeview Boulevard road layout to the Upper Road Alignment. The result of the noise modeling predicted that sound levels at the noise sensitive receptors within the study area will increase less than 5 dba due to the proposed Upper Road Alignment for Lakeview Boulevard. Therefore, noise mitigation measures are not required for the Lakeview Boulevard Upper Road Alignment based on MOECC/MTO noise protocol for roadway reconstruction. Respectfully submitted, YCA ENGINEERING Limited Hava Jouharchi, P.Eng. Senior Project Engineer Lakeview Boulevard EA 7 Environmental Noise Assessment
8.0 REFERENCES 1. "MTO/MOE Protocol, Ontario Ministry of Transportation/Ontario Ministry of Environment", 1986 2. "Environmental Guide for Noise, Ontario Ministry of Transportation/Ontario Ministry of Environment", October 2006 3. "Environmental Noise Guideline - Stationary and Transportation Sources - Approval and Planning, Publication NPC-300", August 2013 4. "Environmental Office Manual - Technical Areas - Noise", Ontario Ministry of Transportation, 1992 5. "Directive QST A-1 (Noise Policy and Acoustic Standards for Provincial Highways)", Ontario Ministry of Transportation, 1992 6. PC STAMSON 5.04, "Computer Program for Road Traffic Noise Assessment", Ontario Ministry of Environment, 2000 Lakeview Boulevard EA 8 Environmental Noise Assessment
FIGURE 2 - EXISTING LAKEVIEW BOULEVARD ROAD LAYOUT FIGURE 3 - LAKEVIEW BOULEVARD UPPER ROAD ALIGNMENT
APPENDIX 1 TRAFFIC DATA
APPENDIX 2 STAMSON 5.04 SOUND LEVEL CALCULATIONS
STAMSON 5.04 NORMAL REPORT Date: 14-11-2016 10:51:13 MINISTRY OF ENVIRONMENT AND ENERGY / NOISE ASSESSMENT Filename: r1rw.te Time Period: 24 hours Description: Receptor 1 (Existing) Road data, segment # 1: Lakeview Bld ------------------------------------ Car traffic volume : 1084 veh/timeperiod * Medium truck volume : 13 veh/timeperiod * Heavy truck volume : 3 veh/timeperiod * Posted speed limit : 40 km/h Road gradient : 1 % Road pavement : 1 (Typical asphalt or concrete) Data for Segment # 1: Lakeview Bld ---------------------------------- Angle1 Angle2 : -90.00 deg 90.00 deg Wood depth : 0 (No woods.) No of house rows : 0 Surface : 1 (Absorptive ground surface) Receiver source distance : 72.00 m Receiver height : 1.50 m Topography : 1 (Flat/gentle slope; no barrier) Results segment # 1: Lakeview Bld --------------------------------- Source height = 0.72 m ROAD (0.00 + 34.71 + 0.00) = 34.71 dba Angle1 Angle2 Alpha RefLeq P.Adj D.Adj F.Adj W.Adj H.Adj B.Adj SubLeq ---------------------------------------------------------------------------- -90 90 0.66 47.47 0.00-11.31-1.46 0.00 0.00 0.00 34.71 ---------------------------------------------------------------------------- Segment Leq : 34.71 dba Total Leq All Segments: 34.71 dba TOTAL Leq FROM ALL SOURCES: 34.71
STAMSON 5.04 NORMAL REPORT Date: 09-02-2017 16:57:12 MINISTRY OF ENVIRONMENT AND ENERGY / NOISE ASSESSMENT Filename: r1rwa.te Time Period: 24 hours Description: Receptor 1 (Upper Road Alignment) Road data, segment # 1: Lakeview Bld ------------------------------------ Car traffic volume : 1084 veh/timeperiod * Medium truck volume : 13 veh/timeperiod * Heavy truck volume : 3 veh/timeperiod * Posted speed limit : 40 km/h Road gradient : 1 % Road pavement : 1 (Typical asphalt or concrete) Data for Segment # 1: Lakeview Bld ---------------------------------- Angle1 Angle2 : -90.00 deg 90.00 deg Wood depth : 0 (No woods.) No of house rows : 0 Surface : 1 (Absorptive ground surface) Receiver source distance : 64.00 m Receiver height : 1.50 m Topography : 1 (Flat/gentle slope; no barrier) Reference angle : 0.00 Results segment # 1: Lakeview Bld --------------------------------- Source height = 0.72 m ROAD (0.00 + 35.56 + 0.00) = 35.56 dba Angle1 Angle2 Alpha RefLeq P.Adj D.Adj F.Adj W.Adj H.Adj B.Adj SubLeq ---------------------------------------------------------------------------- -90 90 0.66 47.47 0.00-10.46-1.46 0.00 0.00 0.00 35.56 ---------------------------------------------------------------------------- Segment Leq : 35.56 dba Total Leq All Segments: 35.56 dba TOTAL Leq FROM ALL SOURCES: 35.56
STAMSON 5.04 NORMAL REPORT Date: 14-11-2016 10:53:49 MINISTRY OF ENVIRONMENT AND ENERGY / NOISE ASSESSMENT Filename: r3rw.te Description: Receptor 3 Time Period: 24 hours (Existing) Road data, segment # 1: Lakeview Bld ------------------------------------ Car traffic volume : 1084 veh/timeperiod * Medium truck volume : 13 veh/timeperiod * Heavy truck volume : 3 veh/timeperiod * Posted speed limit : 40 km/h Road gradient : 1 % Road pavement : 1 (Typical asphalt or concrete) Data for Segment # 1: Lakeview Bld ---------------------------------- Angle1 Angle2 : -90.00 deg 90.00 deg Wood depth : 0 (No woods.) No of house rows : 0 Surface : 1 (Absorptive ground surface) Receiver source distance : 165.00 m Receiver height : 1.50 m Topography : 1 (Flat/gentle slope; no barrier) Results segment # 1: Lakeview Bld --------------------------------- Source height = 0.72 m ROAD (0.00 + 28.73 + 0.00) = 28.73 dba Angle1 Angle2 Alpha RefLeq P.Adj D.Adj F.Adj W.Adj H.Adj B.Adj SubLeq ---------------------------------------------------------------------------- -90 90 0.66 47.47 0.00-17.29-1.46 0.00 0.00 0.00 28.73 ---------------------------------------------------------------------------- Segment Leq : 28.73 dba Total Leq All Segments: 28.73 dba TOTAL Leq FROM ALL SOURCES: 28.73
STAMSON 5.0 NORMAL REPORT Date: 09-02-2017 17:00:59 MINISTRY OF ENVIRONMENT AND ENERGY / NOISE ASSESSMENT Filename: r3rw.te Time Period: 24 hours Description: Receptor 3 (Upper Road Alignment) Road data, segment # 1: Lakeview Bld ------------------------------------ Car traffic volume : 1084 veh/timeperiod * Medium truck volume : 13 veh/timeperiod * Heavy truck volume : 3 veh/timeperiod * Posted speed limit : 40 km/h Road gradient : 1 % Road pavement : 1 (Typical asphalt or concrete) Data for Segment # 1: Lakeview Bld ---------------------------------- Angle1 Angle2 : -90.00 deg 90.00 deg Wood depth : 0 (No woods.) No of house rows : 0 Surface : 1 (Absorptive ground surface) Receiver source distance : 110.00 m Receiver height : 1.50 m Topography : 1 (Flat/gentle slope; no barrier) Reference angle : 0.00 Results segment # 1: Lakeview Bld --------------------------------- Source height = 0.72 m ROAD (0.00 + 31.65 + 0.00) = 31.65 dba Angle1 Angle2 Alpha RefLeq P.Adj D.Adj F.Adj W.Adj H.Adj B.Adj SubLeq ---------------------------------------------------------------------------- -90 90 0.66 47.47 0.00-14.36-1.46 0.00 0.00 0.00 31.65 ---------------------------------------------------------------------------- Segment Leq : 31.65 dba Total Leq All Segments: 31.65 dba TOTAL Leq FROM ALL SOURCES: 31.65 dba