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An initial recommendation is for the Department to require that all construction plans be
<br /> provided in digital format as CAD drawings . In doing so , the Department will be able to
<br /> establish a consistent means for review ; In addition , the Department will be able to archive
<br /> this digital data and link it to specific points for visualization in GIS applications .
<br /> In the short term , it is recommended that the Engineering Department establish a preliminary
<br /> set of CAD standards to which all submitted CAD drawings must conform . It is
<br /> recommended that in the long term the Department work to implement the Federal Geo-
<br /> Spatial Data Committee ( FGDC ) Geospatial Positioning Accuracy Standards, Part 4 :
<br /> Architecture, Engineering , Construction , and Facilities Management ( FGDC-STD-007 . 4-2002) ;
<br /> this standard is generally known as Part 4 of the FGDC ' s Geospatial Positioning Accuracy
<br /> Standards .
<br /> Part 4 provides accuracy standards for engineering drawings , maps , and surveys used to
<br /> support planning , design , construction , operation , maintenance , and management of
<br /> facilities, installations, structures , transportation systems, and related projects . It is intended to
<br /> support geospatial mapping data used in various engineering documents , such as
<br /> architectural , engineering , and construction ( A / E/C ) drawings, site plans, regional master
<br /> planning maps, and related GIS ) , Computer-Aided Drafting and Design ( CADD ) , and
<br /> Automated Mapping/ Facility Management ( AM/ FM) products . These products are typically
<br /> created from terrestrial , satellite, acoustic , or aerial mapping techniques that output
<br /> planimetric , topographic , hydrographic , or feature attribute data .
<br /> The Part 4 standard defines accuracy criteria , accuracy testing methodology, and accuracy
<br /> reporting criteria for object features depicted on A / E/C spatial data products and related
<br /> control surveys . It references established voluntary standards that may be used for some
<br /> smaller-scale A/E/ C mapping applications . In addition , the standard contains general
<br /> guidance for specifying accuracy criteria for selected types of A /E/ C features or control
<br /> surveys . Using the standards and guidance contained in this section , end users of A /E/ C
<br /> products ( e .g . , Utilities Services Department) can specify surveying and mapping accuracy
<br /> requirements needed for their projects or specific CADD / GIS layers , levels , or entities . From
<br /> these specifications , data producers ( e .g . , surveyors , engineering firms , consultants) can
<br /> determine the instrumentation , procedures , and quality control processes required to obtain
<br /> and verify the defined accuracies .
<br /> By implementing this common standard , the Department will be able to maintain consistent
<br /> documentation of construction designs/plans provided by external entities . This will facilitate
<br /> the review and assessment process, and ensure that staff can interpret data consistently.
<br /> By implementing a common standard , the Department will be able to maintain consistent
<br /> documentation of construction designs/plans provided by external entities . This will facilitate
<br /> the review and assessment process , and ensure that staff can interpret data consistently .
<br /> Parks Maintenance/Conservation
<br /> @tGIS-Based Moppinq and Analysis
<br /> The Parks Maintenance Division currently uses ArcView 3 . 2 to view and query GIS data layers
<br /> that were captured in the field using Trimble ProXR GPS units . These layers , in addition to any
<br /> others required , should be centralized on the County ' s GIS database as part of the Enterprise
<br /> Wide system to provide a common location for all GIS data throughout the County .
<br /> The Division will need to acquire additional data layers, such as scrub jay nests and
<br /> boundaries, endangered species , and exotic plant locations to leverage the true potential
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<br /> GIS Needs Assessment and Implementation Plan Chapter I - Departmental GIS Needs Assessment
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