Summary of Specifications:
The selected vendor for this project will be expected to develop a tree inventory layer including all relevant features as appropriate. Vendor shall utilize existing base aerial mapping, road centerline files, building footprint data, and parcel data that will be provided by the City of Monroe through its existing GIS system. Vendor shall target each tree using Global Positioning System (GPS) coordinates within a horizontal accuracy of two (2) foot maximum, best available vertical accuracy, and shall use the results in combination with existing aerial photos when appropriate to establish the new layer. The services of a professional arborist, or equivalent, will be required for those activities that cannot be ascertained by untrained field staff alone. At a minimum, the following attributes (or their equivalent) should be included in the layer data and should be collected by the vendor: „h Species (common and scientific name) „h Height „h Girth (Diameter at Breast Height) „h Crown Spread „h Plant date (will be left blank for existing but field added for later use) „h Last trim date (will be left blank for existing but field added for later use) „h Condition / Health „h Site Characteristics (proximity to overhead lines utilities, narrow terrace, high likelihood of salt exposure, high traffic exposure, etc.) „h Hazard Potential „h Grate Present „h Planting Space (locations in commercial areas where there are empty grates or wells) „h Photo / Date (optional ¡V please specify cost differential to perform this work) Other attributes may be suggested by the vendor as a part of their proposals as may be seen to be advantageous to the City, and these may be considered in the final selection. Vendor shall develop database in such a fashion that users can search for particular attributes above (in particular species, height, girth, condition / health, and hazard potential). The scope of work will include all necessary and appropriate progress meetings as frequently as weekly with the City of Monroe staff, primarily Gerald Roberts, GIS-CAD Section Leader, and Shana Hayter, City Forestry Supervisor. The City does not have an accurate numerical estimate of the number of City trees within City facilities, rights-of-way, and State highway rights-of-way. However, based on an average spacing of 50 feet (both sides of roadway) on 83 miles of City roadway, this could result in as many as 17,500 trees in City rights-of-way alone, though some roadways do not have a consistent canopy. For the purposes of preparing proposals, vendors should assume that up to 20,000 trees may need to be collected, and if this number is exceeded, a proportionate adjustment will be made to the contract as mutually agreed upon. Upon conclusion of the project, vendor shall prepare a summary closeout report detailing the symbology used in establishing the layers, and summarizing basic parameters collected (i.e. percentage of each size of tree, species breakdown, etc.) with the understanding that such a report will be used by City staff as a working document. Vendors should feel free to use wide latitude in suggesting alternate and / or additional scopes of work in their work plans that could accomplish the same general goals as those stated within this RFP, or could provide enhanced services that might be deemed to be desirable to the City. Inclusion of these will in no way obligate the City to accept them as a part of the final awarded proposal, and in keeping with this, vendors shall clearly delineate the add / deduct costs for such alternates in their proposals. See attached request for proposal.
