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Commercial Regulations  Page 47 of 49  <br />  <br /> <br /> <br /> <br />Images showing appropriate design of Parking Structures <br />  <br />Section 9: Open Space Standards  <br />9.4 Permeable Area Requirement: <br />(a) All development is required to maintain a permeable ground area per Table 9-1. <br />Table 9-1 Permeable Area Requirements <br /> <br /> <br /> <br />(b) Permeable ground area shall be on-site within the parcel limits of the development. <br />(c) Up to 100% of Private Common Open Space may count towards the permeable ground <br />area if the materials and ground cover for the Private Common Open Space meets the <br />standards of permeability. <br />(d) Street screening for parking lots that utilize vegetative screening may count towards the <br />permeable ground area requirements. <br />(e) Permeable materials include: <br />i. Any natural vegetation or landscaping that allows direct water infiltration <br />ii. Permeable paving materials designed and engineered to allow direct water <br />infiltration. Any new material not listed in any best practice guides for permeable <br />paving will be evaluated and considered by Community Development Staff and <br />may be permitted with Permitted Adjustment fromapproved by the JDA. <br />Permeable paving materials shall not count towards more than 20% of the total <br />permeable area requirements. <br />iii. Any material that requires a sheet flow and collection system for water infiltration <br />shall not be considered permeable cover. <br />(f) Design and placement: <br />i. In Town Center, Retail Mixed-Use and Office Mixed-Use Zones, permeable area <br />that is adjacent or visible from the public right-of-way shall be designed in context <br />with the public realm and not interrupt the form of the public realm. An interruption <br />may be considered any design that blocks pedestrian walkability and clear zones, <br />blocks views of entryways and windows, or blocks access to any ingress/egress of <br />a building. <br />District Min Pervious Lot Area <br />TC, Retail, Office 10% <br />Flex Office/CC 25%