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32 <br />UNDISTURBED AREAS <br />Future site plans will identify areas where land disturbance activities will not occur. <br />1) No work is allowed in designated undisturbed areas, except for connections of pedestrian paths <br />and greenways. <br />2) Tree protection fencing is to be provided during construction activities to delineate the amount <br />of clearing in the area. <br />3) Areas shall be walked for best route and flagged prior to installation of fencing by designer and <br />Urban Forester. <br />4) Designated disturbed areas are portions of the site needed to support the development area, <br />and may include buildings, parking, stormwater facilities, landscaping, roads, sidewalks and <br />trails, and bike paths. They may also include undisturbed areas identified at the site plan <br />development stage of planning and design. <br />5) Site plans shall show all clearing limits and tree protection fencing. <br />SUSTAINABILITY <br />All new projects at the site will be done following the Town of Chapel Hill Design Guidelines as well as <br />the High Performance Guidelines: Triangle Region Public Facilities prepared by the Triangle J Council of <br />Governments. <br />Balancing the fulfillment of our current needs without compromising the ability of future generations to <br />meet their needs is the essence of sustainability. Orange County, as an early proponent of sustainable <br />design, will be seek to apply design solutions used on recently completed facilities as well as new <br />technologies and designs where feasible on this site. <br />Orientation <br />The natural setting of the site, its contours and vegetation, shall be viewed as assets to be preserved and <br />woven into the design as much as possible. For the Chapel Hill climate, buildings oriented with the <br />longitudinal axis of the building in the east /west direction will typically have lower energy costs than <br />buildings oriented with the longitudinal axis of the building in the north /south direction. <br />Daylight <br />Using daylight from windows, clerestories, skylights, atriums, etc, is encouraged to reduce artificial <br />lighting and increase user satisfaction. Skylights and atriums should allow narrow building footprints to <br />be naturally lit. Windows close to the ceiling are encouraged to allow greater penetration of daylight. <br />Interior offices should incorporate transoms and vision lights to allow light infiltration into deeper <br />spaces. <br />Uncontrolled use of daylight can lead to user discomfort and increase mechanical cooling requirements. <br />Buildings should incorporate appropriate shading devices over windows and entryways. Roof <br />overhangs, recessed windows, sunshades, and arcades are all devices which can be used to create shade <br />on the face of a building. Automated, motion - sensor or user - controlled interior lighting, either natural <br />or artificial, should be provided to maintain user comfort and reduce energy costs. <br />Southern Orange County Government Services Campus I MASTER PLAN Page 9 <br />