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RFP #24-038A: On -Call Environmental Review Services for CHAMBERS <br />the Housing Division GROUP <br />City of Santa Ana <br />the SCAQMD and utilizes the SCAQMD CEQA Handbook as the guidance document for the environmental review of <br />plans and development proposals within its jurisdiction. <br />Vista Environmental's approach used for air quality analyses are dependent on if it is to be prepared for CEQA, NEPA, <br />or Caltrans standards but typically includes identifying the air quality setting, obtaining the criteria pollutant <br />concentrations from the nearest monitoring station, providing a summary of all applicable air quality regulations, <br />identifying the applicable thresholds of significance, evaluating and quantifying regional criteria pollutant emissions <br />from construction and operations through use of California Emissions Estimator Model° (CalEEMod), evaluating <br />localized criteria pollutant concentrations through use of SCAQMD Look -Up Tables or through use of AERMOD, <br />providing an odor analysis that identifies potential odor sources and sensitive receptors that may be impacted, and <br />determining if anythresholds have been exceeded and, if necessary, providing mitigation to reduce impacts to less than <br />significant levels. <br />The approach used for GHG emissions analyses typically includes identification of GHG pollutants and their impacts to <br />climate change, identification of applicable plans, policies and regulations and thresholds of significance, evaluation, <br />and quantification of GHG emissions from construction and operations through the use of CalEEMod, determination of <br />any thresholds have been exceeded, and if necessary develop mitigation to reduce impacts to less than significant <br />levels, and provide a consistency analysis to determine if the project would conflict with any applicable plan for reducing <br />GHG emissions. <br />Noise Impact Analysis: Vista Environmental's approach used for noise analyses typically includes identifying noise <br />sources in the project study area, obtaining noise measurements of the existing ambient noise levels in the vicinity of <br />the project site, evaluating construction -related noise impacts at the nearby sensitive receptors through use of Federal <br />Highway Administration's (FHWA) Roadway Construction Noise Model (RCNM), utilizing FHWA's RD-77-108 or TNM <br />noise models to model traffic noise increases created by the project, utilizing reference noise measurements and <br />standard drop-off rates or the Sound Plan model to analyze noise impacts from non -transportation noise sources, and <br />determining if anythresholds have been exceeded and, if necessary, providing mitigation to reduce impacts to less than <br />significant levels. <br />Phase I ESA (Converse) <br />Converse will generally follow the standard practices of the American Society for Testing Materials (ASTM) Phase I ESA <br />Process (Standard: E1527-13) and HUD Guidelines. The ASTM Standard E1527-13 is intended to satisfy one of the <br />requirements to qualify for the Landowner Liability Protections (LLP) within the scope of the Comprehensive <br />Environmental Response, Compensation and Liability Act (CERCLA), that is, the practices that constitute all appropriate <br />inquiry (AAI, 40 CFR Part 312) into the previous ownership and uses of the property consistent with good commercial <br />or customary practice. The following Scope of Services is proposed: <br />1. Review of regulatory agency records, aerial photographs, fire insurance maps, city directories, building permits, <br />United States Geological Survey (USGS) topographical maps and other non-standard historical sources. <br />2. Visual survey of property and adjacent sites for indications of potential for contamination or contamination <br />generators. <br />3. A reasonable attempt will be made to interview the owner(s), site manager(s), and major occupant(s), and to <br />contact State or local government officials. <br />4. Prepare report signed by an Environmental Professional for electronic submittal. <br />Phase II ESA and Soil Testing (Converse) <br />The objectives of a Phase II investigation are to: evaluate the likelihood that potentially hazardous materials are present <br />at the site; assess the nature and concentrations of the chemical compounds; assess the vertical and horizontal extent <br />of impacted soil through testing, as well as the impact to groundwater; determine if the subject property will require <br />some form of remediation and evaluate the most feasible remedial alternative to remediate the site. The scope of <br />services for a Phase II investigation is typically based on the results of a Phase I ESA and/or other Phase II investigations. <br />Phase II investigations may include the following: a Geophysical Survey, collection and testing of soil, soil vapor, indoor <br />air, and/or groundwater samples, field screening of samples, and/or laboratory analysis of samples. <br />"= Est <br />1979 <br />19 <br />www.chambersgroupinc.com <br />