T & B PLANNING (2) - 2010 - Laserfiche WebLink

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Proposal for San Lorenzo Lift Station EIR Prepared for: CITY of SANTA ANA EXHIBIT B: SCOPE OF WORK 8. Estimate trip generation associated with construction activity based on information provided by the project team. 9. Route estimated construction traffic to study area intersections based on the construction routes. 10. Assess the intersection Level of Service (LOS) and roadway segment capacities for existing (2010) conditions. 11. Assess the intersection Level of Service (LOS) and roadway segment capacities under existing plus construction traffic conditions, assuming potential lane closures and the addition of construction traffic associated with the proposed project. 12. Identify and recommend appropriate mitigation for the construction phase that would reduce construction impacts and improve the performance at the study intersections under existing plus construction traffic conditions. 13. Summarize the potential impacts due to construction traffic and mitigation recommendations in a letter report. Submittal of Report 14. The report will be submitted. Task 3.3 - Noise Impact Analysis In order to address the project's potential to create noise levels in excess of the City's standards, Urban Crossroads, Inc. will prepare a noise impact analysis that will focus primarily on the construction - related impacts associated with the project. As part of this task, Urban Crossroads will undertake the following work efforts: 1. Review aerial photos and maps to identify the noise sensitive locations in the study area that may be significantly impacted by construction noise as well as the City of Santa Ana construction noise standards. 2. Identify the existing noise barriers in the study area. Evaluate the condition, height, construction material (masonry block, iron fence, wood) and the potential for gaps or decorative cutouts that may diminish the barrier's effective noise reduction. 3. Evaluate the existing noise environment and determine the ambient noise conditions including traffic noise and noise from the existing surrounding commercial uses. Obtain 15- minute short-term noise level measurements in the vicinity of the project at up to four (4) locations and 24 -hour noise level measurements at up to four (4) locations. 4. Identify the construction phases, schedule and equipment to evaluate the potential noise impacts to the noise sensitive locations in the study area and obtain reference noise levels for the major construction noise sources (equipment) related to this project. 5. Calculate the construction related noise impacts and quantify the overall noise impacts from the equipment used to the existing noise sensitive land uses. Page B -4