Agenda - 01-16-1997 - 3 - Laserfiche WebLink

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3 The reports and analyses developed and presented by the various impact practitioners are derived from information about the development itself as well as from information specific to a particular field of expertise. In lieu of the detailed and extensive analysis, a certain amount of generalized information relating to a particular type of impact analysis can be assembled and computerized for a rapid scanning of aggregate development effects. While not replacing the analysis required of any individual field of impact inquiry, the development impact analysis model makes it possible to "obtain a feeling for" or to "preview" development impacts. The model stores information that can be combined with a development pro forma as well as other user provided data to produce a"snapshot" estimate of significant development effects. Model Inputs The model's inputs are drawn from three sources: a user worksheet, model factors, and model calculations. The worksheet for the model consists of data entered into a form available to the user. The model factors encompass economic, environmental,demographic,and other standards that are incorporated into the programming of the model. The model calculations involve intermediate outputs from the model that serve as inputs for subsequent calculations. The user worksheet and model factors are further explained below. The user worksheet is a form completed by a developer, public body, or other user of the model. It asks for project and site specific information for the different fields of impact assessment. Most of this information is typically known and readily available. For instance, under the legal section, the user identifies both the public jurisdiction that serve the site and the nature of the land use application. The physical planning section describes the project pro forma, and the size of the site and its overall developability. A sample user worksheet is provided as Exhibit A. Many of the data do not need to be project or site specific. Inputs include a host of economic, environmental, demographic, and transportation factors such as share of household disposable income that will be spent on retail purchases, regional input-output multipliers, per capita water consumption for attached versus detached housing units, and trip generation by land use category.The model encompasses 46 "built-in" model factors, including, but not limited to trip generation values from the Institute of Transportation Engineers, parkland standards from the National Recreation and Park Association,EMS vehicle and personnel needs from the International Association of Fire Chiefs, and public service staffing profiles by community size and region from the Bureau of the Census. Model factors are identified in Exhibit B. It should be noted, however,that while the model incorporates those factors listed in the exhibit in its programming, the user can replace the factors with data that are more locally specific or current when such information is available. For example, the model uses parkland standards of the National Recreation and Park Association. The parkland requirements of the adopted Master Recreation and Parks Plan could be substituted.