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dimensional standards that control overall building mass, including setbacks and building height. Common Use/Private Open Space and Amenities The project includes a variety of on-site common use/private open space areas which provide both passive and active recreational amenities. These include two ground-level outdoor courtyard-style spaces, as well as one common use roof-top deck area. Other on-site amenities include two pedestrian plazas (southwest corner and east side), swimming pool, fitness facility, clubhouse, playground, BBQs, lounge, common use office space, and mail room. Private open space would be provided by patios (ground-level units) and decks/ balconies (Levels 2 through 5) for each unit. These spaces range in size from approximately 60 square feet to approximately 200 square feet depending on the unit type and location within the building; however, in most cases the size of private open space areas would average approximately 75-80 square feet. Detail of group open space is shown on Plan Sheet A1-0 of the project plans (Attachment 4). For a project of this size, the 2012 Design Guidelines require a minimum of approximately 200 square feet of group open space per dwelling unit (for 360 units, approximately 72,000 square feet is required). Private open space is not required, but, if provided, it can be deducted from the group open space requirement (each square foot of private open space is considered equivalent to approximately two square feet of group open space). Based on the size of all group open spaces (approximately 18,000 square feet of private open space, approximately 24,064 square feet of group usable open space, and approximately 62,826 square feet of public outdoor space), including both pedestrian plazas, and given all units include a porch/balcony of varying sizes, the project conforms to the 2012 Design Guidelines. Therefore, staff finds the project amenities and group and private open space to be acceptable. Grading and Drainage Give the significant size of the site, visually it appears to be relatively level, although there is a modest downslope from the northwest to the southeast corner of the site of approximately 12-15 feet. The applicant is proposing to generally maintain the existing grades. Site drainage will be directed towards landscaped bio-retention planters located in various areas of the subject site for retention and treatment before draining into the City's storm drain system. As conditioned, staff finds the proposed grading and drainage plan to be acceptable and in compliance with applicable stormwater runoff requirements. Traffic and Circulation As mentioned, vehicular access to the site would be provided from two existing driveways and drive aisles (one off the main segment of Stoneridge Mall Road, and one off the internal loop segment of Stoneridge Mall Road). Page 32 of 41