Resource
Surveys
In addition to specifying local preservation goals, a municipal comprehensive plan should also contain a mapped inventory or survey of the historic and archaeological resources intended for protection/preservation. This survey or inventory provides the groundwork upon which the preservation policies of a municipality should rest.
A simple inventory, otherwise known as a “windshield survey," consists of a listing all of the historic resources within a municipality. A more complete survey containing information on the historic significance of each resource would be of even greater value as it serves as a basis for determining the type and level of protection that is needed. For legal purposes, it is extremely important to establish criteria for determining how sites are chosen to be in the survey. This list is then the defining base for additional controls through local regulation. It is also critical that the survey or inventory be kept up to date to protect those resources that may have just "come of age" and are now officially considered "historic," i.e., they are fifty (50) years or older.
Delaware County Planning Department (DCPD) can act in an advisory capacity to those communities who wish to begin a survey. In a comprehensive survey, each historic resource is documented on a form provided by PHMC. Each site is visited, photographed, and a site plan drawn. A narrative is included for both the history of the structure and the architectural description. All the historic resources should then be identified on a municipal map. The areas believed or known to contain sensitive archaeological resources should also be defined and included in the listing of historic resources. DCPD maintains a database on the potential archaeologically sensitive areas in the County. This completed survey of all the resources and an accompanying map should then be adopted into the comprehensive plan.