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Proposers should also remain aware that the transit center and government building located adjacent to the North Block will generate a high volume of vehicle and pedestrian traffic adjacent to the site. Proposers should consider how to minimize potential construction staging conflicts with the uses and functions of the Courthouse Square building and transit facilities. 4.2 Construction Constraints Proposer must provide for truck access/loading areas and construction mobilization so as not to interfere with the use of the transit mall and Courthouse Square office building and parking facility during construction. 4.3 Design Considerations (a) Design Review The selected Proposer will be required to obtain all city approvals including any design review. The Procuring Agency, in consultation with their design consultants, must review and approve the final design. (b) Design Flexibility The Procuring Agency is not prescribing any specific type of ground floor use; nor is it specifying any particular use above the ground floor, provided that these uses comply with zoning and design standards and are compatible with the adjacent transit mall and Courthouse Square functions. The massing and scale of the Project should have the "texture" and feel of the public building on the south end of the block and other commercial buildings in the immediate area. (c) Access The Procuring Agency will carefully evaluate the proposed design and how it integrates off-site pedestrian access to the development. The Project may not impede or impair access to the transit mall except as may be mutually agreed for security purposes. ADA access requirements must also be met throughout the Proj ect. (d) Parking The Procuring Agency is constructing an underground parking structure containing 314 parking spaces underneath and adjacent to the south of the project site. Fifty-six of these spaces will be made available to the North Block developer. A control gate, operated by electronic key cards, will restrict access to the parking structure. (e) Noise and Vibration Design and construction techniques should be utilized which consider and mitigate noise impact from buses on the transit mall. These may include wall insulation, window treatments, mechanical air conditioning sound isolation, etc. The North Block Project must also be designed and constructed to minimize noise or vibration impacts directed toward the transit mall and Courthouse Square structure. (~ Seismic Considerations Proposer must pay close attention to seismic factors due to adjacent underground parking and bus mall. Seismic plans must be approved by the engineer of record for the Courthouse Square development. 4.4 Site Information In its construction process, the County has removed soil contaminated with residue of petroleum fractions from areas within the block. The site has been cleared by the Oregon Department of Environmental Quality regarding environmental remediation of the block, and a"No Further Action" letter has been granted by the agency. 5. SELECTION SCHEDULE/SUBMITTALS