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Pleasanton Development Impact Fee Nexus Study Draft Appendix A 07/12/18 Existing Deficiencies The concept of accounting for existing deficiencies in a fee study is that new development should not be charged the full cost of improving a facility if it is not meeting current operating standards during the critical peak hour (typically the PM peak period). For the purposes of this analysis, the City provided their most recent traffic count database, in which they collect AM and PM peak period traffic counts on all major roads throughout the City. The counts were conducted in the spring of 2015. Roadway Improvements The daily traffic volumes provided by the City were used to determine the existing level of service for all of the project locations where counts were available. (Note that some of the projects involve building new roads, so for obvious reasons there are no counts available for those project locations.) The level of service results were then compared to the City's standards and locations where the standard was not met were flagged. The detailed results are shown in Attachment 1. One intersection, Sunol Boulevard & I-680 SB off-ramp, was identified as not currently meeting the City's standards. However, that intersection was also addressed in the 2010 TIF report and was not an existing deficiency at that time. Per the City's direction, this location will be grandfathered in to the current TIF study and will not be considered an existing deficiency. Two of the roadway improvement projects, numbers 20 and 36, are primarily focused on improving the safety of travelers at those locations, as contrasted with improvements that have a primary purpose of adding capacity to accommodate more travelers. To account for this, only a portion of the costs of those two improvements will be included in the fee program. This portion will be the portion of the total future Daytime Population that is projected to be added through new growth (that is, the 17 percent factor described above). This is shown in the column called Percent Eligible for Fee Program in Table B-1. New Traffic Signals Peak hour traffic signal warrants were reviewed at the unsignalized study intersections. Peak hour warrants4 were satisfied at two intersections based on existing conditions, as summarized in Table A-4. These two locations will be considered to be existing deficiencies, in that they already meet the warrants for signalization, so only a portion of the improvement cost will be 4 Unsignalized intersection warrant analysis is intended to examine the general correlation between existing conditions and the need to install new traffic signals. Existing peak-hour volumes are compared against a subset of the standard traffic signal warrants recommended in the Manual on Uniform Traffic Control Devices (MUTCD) and associated State guidelines. This analysis should not serve as the only basis for deciding whether and when to install a signal. To reach such a decision, the full set of warrants should be investigated based on field-measured traffic data and a thorough study of traffic and roadway conditions by an experienced engineer. Furthermore, the decision to install a signal should not be based solely on the warrants because the installation of signals can lead to certain types of collisions. The responsible State or local agency should undertake regular monitoring of actual traffic conditions and accident data and conduct a timely re-evaluation of the full set of warrants in order to prioritize and program intersections for signalization. Economic& Planning Systems, Inc. A-4 P:\151000s 151111PleasantonFee\Report\151111_FeeNexus_071218.docx