Overview - Evaluation Criteria - Evaluation Methodology - Schedule
The site selection process consists of three distinct phases: (1) identification of potential sites, (2) selection of candidate sites, and (3) evaluation and final ranking of the candidate sites. Properties within the County were initially screened with respect to a set of exclusionary criteria to establish a listing of potential transfer station sites. The ten (10) highest ranked potential sites were evaluated with respect to an adopted set of technical criteria and weighting factors. Following the technical evaluation, these sites were then evaluated with respect to community-specific criteria and weighting factors that had also been adopted by the Board of County Commissioners (BOCC).
Proposed screening and evaluation criteria including criteria weighting factors were presented for public input and comment prior to finalization and adoption by the BOCC.
Public participation, input, and comments were encouraged throughout this process during BOCC Works Sessions and Regular Meetings, and through special public information meetings, mailings and project updates, web site, presentations to neighborhood groups, community workshops, etc.
As noted in the Siting Process Overview, three (3) categories or sets of criteria were used in the evaluation of possible transfer station sites. These categories include exclusionary criteria, technical criteria, and community specific criteria.
Exclusionary criteria include the stipulation of areas where development is prohibited by federal, state, or local laws or regulations. Exclusionary criteria also include consideration of transportation distance, land use, zoning requirements, watershed protection, and other factors that may significantly impact the environment, facility costs, or project implementation.
Technical criteria include specific engineering, operation, and transportation parameters that should be considered to assure that sites are feasible from a technical design, environmental, and economic prospective.
Community-specific criteria consider the impacts that the facility will have on the surrounding community.
Public input and comment, specific to each set of criteria, were solicited during the siting process.
Community Specific Criteria
Evaluation Methodology and Results
Evaluation of the potential sites with respect to proposed technical and community-specific criteria was accomplished using a weighted algorithm approach. A numerical weighting factor will be assigned to each criterion to account for relative importance. The larger the weighting factor, the greater the importance given to the specific criterion.
The individual ranking of sites by specific criterion was determined by assignment of order from the most favorable to least favorable. Given that ten potential sites were identified from the exclusionary screening process, the most favorable site with respect to a given technical criterion was assigned the number 10 and the least favorable the number 1. This ranking order was then multiplied by the weighting factor to obtain a total point value for each criterion. Criterion point totals were then added for each site alternative to determine a total point value and technical ranking. Refer to the example for additional detail as to how the process was employed. The sites with the largest number of points would be the most favorable.
The ten potential sites were evaluated with respect to each community-specific criterion in the same manner as described above for the technical evaluation process.
Based upon the technical and community-specific evaluations, three (3) candidate sites were selected by the BOCC for further consideration. The results of this process are summarized in the Site Selection Status Report.
The evaluation of final candidate sites also included the re-evaluation (based upon access of the property from the Town’s Operation Center) of Site 744, Town of Chapel Hill owned site off Millhouse Road. The results are presented in the Site Evaluation – Site 744 (Millhouse Road).
The Board of County Commissioners (BOCC) has encouraged public input and comment regarding the selection of specific criterion, weighting factors, and ranking of sites.
Staff is scheduled to conclude its evaluation and due diligence prior to the December 7, 2009 BOCC meeting.