25G - ENGINEERING SRVS GRADE SEPARATION

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Literature Search and Field Review • Applicable Laws - ICF Jones &C Stokes shall review relevant State and federal statutes, regulations, and guidelines to determine the requirements for protection of paleontological resources specific to this project. - Coordination with Agencies and Schools - ICF Jones &L Stokes shall coordinate with appropriate agencies and educational facilities to collect data regarding paleontological sensitivity. • Library Search - ICE Jones &L Stokes shall search relevant published information, including technical geologic and paleontological articles, discussions of fossil localities and their geologic context, geologic maps, and descriptions of sedimentary geologic units in the project area. • Museum Record Search - ICE Jones &6 Stokes shall examine unpublished specimen records in museums to obtain information relating to resource distribution in the project area- Field Review - ICF Jones &c Stokes shall visit the proposed project site to observe stratigraphic features, bedding geometry and other relevant geologic features. Data Compilation &L Sensitivity Assessment Data accumulated from the above sources will be integrated and summarized to provide a description of the known aspects of the resource, if relevant. These aspects include the probability that the affected geological units include paleontological resources, the probable/possible significance of any likely fossils, and the effects of any historic surface modifications. The goal of the PER portion of the report is to identify the potential for impacts to significant paleontological resources within the project's limits. The report prepared will identify and document anticipated impact to paleontological resources existing with the project's limits of disturbance (both vertical and horizontal), if potential impacts exist- ICF Jones &L Stokes shall prepare a PIR/PER that includes the following: • Summary of the proposed project • Delineation of the project limits - Delineation of the project excavation locations and depths • Document efforts to avoid or minimize effects on paleontological resources • Identify significance and/or sensitivity of paleontological resources and/or rock units following the guidance provided at: http://www_dot.ca.gov/ser/volI/see3/physical/Ch 08 Paleo/chapO8paleo.htm#pir - Identification of sources consulted and results of that consultation • Identification of any consultation related constraints • Identification of a course of action, including identification of specific geologic formations and paleontological resources • Identification of the persons preparing the PIR/PER and their qualifications • Identify whether a Paleontological Mitigation Plan (PMP) is recommended It is assumed that a PMP will not be recommended or required for the proposed project and one is not included in this scope and cost. It is further assumed that the findings of the PIR/PER will be negative and no additional paleontological tasks or effort will be required. Air Quality Report Based upon the last three road/rail grade separation projects that ICF Jones &G Stokes has performed in southern California an air quality report may not be required for the project. It has been determined on these other three projects that as long as the project does not add additional capacity or include the installation of new stop signs or traffic signals that an Air Quality Report is not required- However, an Air Quality Report has been included in this scope and cost in case it is ultimately determined to be required by the District. This will be discussed early in the process with Caltrans and further document in the PES that is prepared. ICF Jones &L Stokes will prepare an air quality technical report that analyzes air pollutant emissions associated with changes in vehicle speed and traffic distribution patterns resulting from the proposed project. All impact analyses will be performed consistent with the technical requirements and methodologies outlined in the Caltrans' Standard Environmental Reference (air quality chapter). Ci/v of Santa Ana 25G-169