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Proposed Building, Site, and Landscape Design Guidelines The lot-specific house, site, and landscape designs will be controlled by design guidelines, attached as part of Exhibit A. The design guidelines are tailored for the hillside setting of this development and provide detailed and comprehensive landscape and building design standards. The guidelines also include examples of the house designs for the different types of lots of this development. The review of the home designs for these lots would be administered by a two-step process including an "in-house" review administered by the Oak Grove Review Board and then the formal design review administered by the Planning Department. Grading/Urban Stormwater Runoff The proposed grading plan includes the following features: • Lots and streets would be located in the most geologically stable areas of the site in order to avoid landslide areas and to reduce grading. Initial grading will be necessary to accommodate the public streets and the front-yard portion of the lots. The remainder of the lot will then be contour-graded and "feathered" to existing terrain. • Grading for the overall development, not including private lot grading, will result in approximately 620,000 cubic yards of cut and fill material being moved on the site. Of this amount, approximately 390,000 cubic yards of excess material will be stockpiled in two areas of the open space area. The remaining 290,000 cubic yards will be used as fill material for the roads. This will prevent off-hauling material down Hearst Drive and through the existing neighborhoods. • The lots would be designed to drain to the detention basins shown on the site plan to pretreat the runoff before its entry into the City's storm drain system. For some lots or portions of lots that cannot drain to the street, localized storm water pollution prevention measures are provided. • A Geologic Hazard Abatement District (GRAD) will be established to inspect the development for erosion, destabilization of slope banks, the functionality of storm drainage systems including detention ponds, and the overall stability of slopes. The GRAD would then take any appropriate action, including landslide repair. The GRAD may also be the owner of the open space parcel. Public Improvements and Traffic Mitigation With recordation of the first subdivision map, the applicant will pay $1,000,000 to the City for in-lieu Traffic Impact Fees (TIF). These funds would be applied to the construction of development-specific traffic improvements and the construction of traffic calming measures on Hearst Drive. The applicant is also required to separately pay the Tri-Valley Transportation Development (regional traffic) fees. Affordable Housing Agreement To meet the City's Inclusionary Zoning Ordinance requirements, the applicant would provide 20 affordable units at an off-site location which has yet to be determined, or Page 7 of 27