I have 4 separate GIS layers: Boundaries of Residential Parcels (polygons), the Locations of various public facilities (points), the street centerlines of the city (line), and the 30 m DEM. I would like someone to calculate the nearest distances between each parcel and the facilities (using the streets, NOT straight line distances). I would also like know the average slope of the path he/she would be taking if they were walking. The distances and the average slope will have to be added to the attribute table fo the parcels.