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AGREEMENT 1-2354 Exhibit A ." ,..-- PE 17.1 Hydrology Studies The purpose of this task is to perfonn needed hydrologicallhydraulic studies of The CenterLine Project to make sure the final project and its associated construction activity does not negatively affect the county's drainage facilities, The CONSULTANT will review available infonnation on flood plains and critical stonn drainage watersheds from the Conceptual Engineering work, the U.S. Geological Survey high water and flow records, state and local flood plain mapping, etc, Where CenterLine project facilities impinge on these areas the CONSULTANT shall perfonn the necessary studies to make sure the project's designs confonn to applicable federal, state, and local regulations conceming construction and drainage requirements in those areas, especially in light of the more stringent standards during construction that have been established by the Regional Water Quality Control Board. , , Each station site and the CMF will have a hydrology evaluation undertaken to recommend necessary grading and drainage designs which will then be incorporated into Preliminary Engineering design, The CONSULT ANT will analyze all line segments to assure surface run-off is properly channeled into existing stonn drain facilities, If these evaluations require any new drainage facilities needed to handle the stonn flow from the project, the facilities will be located, sized, specified and incorporated into the project design, The CONSULTANT will also evaluate all construction plans to detelmine the preliminary stonn run-off management plan for construction, Recommendations will be incorporated into fmal designs, Deliverables: The CONSULTANT will prepare the following: . A series of working papers on the hydrology studies undertaken, including drainage study recommended design directives and specifications, . A series of working papers on each expected construction specific steps for the stonn run-off management plan, package recommending The following paragraphs describes in greater detailed the work scope that resulted from the CONSULT ANT's input during negotiations of the PE consulting services contract. The following clarifications are included as part of the CONSULTANT's Schedule of Values: Task 17,01,01 Sail Diego Creek Pier Placemellt Hydraulics Study . As alignment refmement progresses; where the substructure piers fall within the embankment of San Diego Creek Channel, a highwater calculation will be provided and ~ll necessary documentation for obtaining proper pennits. 55 (JOt