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SCOPE OF SERVICES Areas where a separate technical study will not be prepared but are assumed to require more than a cursory discussion are presented below. Biological Resources - there are some species that have had changes to their listing status since the NEPA CE was adopted. This includes Monarch butterfly, burrowing owl, and Crotch's bumblebee. Based on the conditions at the project site, it is not expected that suitable habitat is present and it is therefore expected that there would be no potential for impacts to any listed species. The biological resources effort will consist of obtaining an updated Unites States Fish and Wildlife Service species list and conducting a review the California Natural Diversity Database to identify any species with the potential to be present/occur. Fallowing the review of this information, a field visit will be conducted to confirm that no suitable habitat is present and that these species do not have the potential to be present. It is assumed that no species will have the potential to be present and that no additional biological evaluation or studies will be required. It is assumed that the biological resources information will be directly incorporated into the ER. Cultural Resources — The cultural resources effort will consist of conducting a record search to confirm that no resources have been identified that are eligible for listing on the National Register of Historic Places (NRHP) or California Register of Historical Resources (CRHR). In addition, a review will be conducted to confirm that no resources that were not previously of age would now require evaluation. It is expected that no resources will be present that are eligible for listing on the National Register of Historic Places or California Register of Historical Resources, that no resources will require evaluation, and that the cultural discussion will be directly incorporated into the ER. Water Quality — The water quality effort will consist of reviewing the list of impaired water bodies to confirm no changes have occurred and no new water bodies are listed as impacted, and updating any information, regulations, and regional permits information that is now outdated. This discussion will be directly incorporated into the ER. It is assumed that no new mitigation, or elimination or reduction of mitigation commitments, will be CITY OF SANTA ANA SANTA ANA BOULEVARD GRADE SEPARATION-, MARKTHOMAS identified or required, that no revisions to the CEQAINEPA documentation itself (or new, supplemental, or subsequent environmental documentation) will be required, that no meaningful modifications to any measures will be required, and that no recirculation or public availability of the CEQAINEPA documentation will be required. It is assumed that no new laws or regulations will be identified since adoption of the NEPA documentation that require analysis, evaluation, or documentation beyond that identified in this scope of work. Based on the results of the above analyses a determination will be provided on the NEPAICEQA Re -Validation Form regarding the validity of the existing NEPA determination and findings. It is assumed that the finding will be that the NEPA documentation is still valid in conjunction with the above listed analyses and that no further action is required related to environmental documentation. As part of the ER effort, the Environmental Commitment Record (ECR) will be updated to reflect any changes, additions, or deletions to the measures included in the previously adopted NEPA documentation. The ECR will be an attachment to the ER. Finally, the Transportation Air Quality Conformity Findings Checklist will be prepared as an attachment to the ER. 6.3 Technical Study Updates Preparation of all technical analyses and reports will follow local, state, and federal environmental guidelines, primarily consisting of the Caltrans SER website, Caltrans Project Development Procedures Manual, local and state CEQA Guidelines, and FHWA Technical Advisory 6640.81 Guidance on Preparing and Processing Environmental and Section 4{f) Documents. The formats to be used for the technical studies will follow the guidance available on the Caltrans SER website as of the date that those studies are initiated. Only those technical studies identified in this scope of work are assumed or included. Any other technical studies or efforts are assumed to be not. required, or will be addressed/prepared by others and provided to ICF. For this scope of work, the technical studies for which a specific scope of work