Agenda - 06-18-2013 - 7f - Laserfiche WebLink

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w� 122 Tkiangle it o j e c t D e v e N o l,4)iim e in S c o I f Wo r fk Aerial Mapping Establish Baseline Control along Corridor The URS Team will supplement the GPS network (item 2) with additional baseline survey control points surveyed conventionally between the GPS pairs. The Baseline Control will serve as the survey control for all supplemental surveys. Classification of Aerial Mapping The URS Team will perform classification of the aerial mapping obtained. Classification involves the ground verification, identification and labeling of planemetric features included in the aerial mapping. Classification includes obtaining the size, construction material and other information specific to the planimetric features. Following are some examples: N Drives—type of material, concrete, asphalt, gravel or soil. Buildings—number of stories, basements,type of exterior veneer Landscape areas and tree lines IN Signs—location and type Retaining Walls-top and bottom of wall elevations, and material,timber, segmental block, etc. IIIIH Fences—height and material • Water—above ground appurtenances such as valves, meters, and hydrants • Gas—above ground appurtenances such as valves, meters, and vents Telephone—above ground appurtenances such as poles, pedestals, and manholes Power—above ground appurtenances such as poles, pedestals, and manholes Curb and Gutter-size and section, standard, roll-type, median mountable curb, etc. Supplemental Surveys The URS Team will perform supplemental ground surveys. Supplemental surveys include surveys to collect: Obscured Areas- areas too heavily wooded for the aerial firm to accurately determine the ground elevations or the existence of planimetric features. Existing rail alignments and elevations as needed. Pavement dtms of existing roads or highways that the proposed rail lines are crossing. Hydro surveys-all drainage ditches or other channelized stormwater features. Bridge clearances of existing bridges the proposed rail lines are crossing under. • Storm drainage structures, including rim elevations, pipe inverts, pipe sizes, pipe material, driveway pipes and culverts. • Sanitary sewer structures, including rim elevations, pipe inverts, pipe sizes and pipe material. • Utility appurtenances. Any existing planemetric features found that are not shown in the obtained aerial mapping. Du rlh aryi- raunge 1-iig rot Rail "Trainsit PuP°oject I Jlune 2013 � -33 D AF1'