2007-11-28 CC Packet - Laserfiche WebLink

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change does not impact travel, but in other locations does have an impact. Because of the changes in land use compared to previous scenarios used to make decisions with regard to improvements on CSAH 14, the county requested SRF Consulting Group, Inc. to review traffic information included in the EA W. Their comments are summarized below and are attached to this letter. · In regard to trip generation for the proposed development: o Additional information is needed to identify the land use type used to generate trips for the proposed retail square footage. o There appears to be a miscalculation for the apartment land use for daily trip estimates. Daily trips should be 1,720 instead of 1,560. o It appears (Table 21-1) that the pass-by trip reductions were applied to initial trip estimates instead of the through volume. This results in too few trips being distributed to the system. . In regard to background growth for the proposed development: o A review of the future 2020 no-build traffic volumes was completed to compare to existing volumes. Using a 2.4 percent yearly growth rate (background growth indicated in the study), the no build numbers appear low. . In regard to trip distribution for the proposed development: o The directional distribution that was used for the proposed development has 65 percent of the trips routed to/from the east on 1-35E and east of the interchange. This indicates a regional trip distribution. It is assumed that this distribution was used for all proposed uses. Generally, directional distribution varies based on the land use type. Applying the same distribution could distort some of the trip patterns. o Previous work completed by the county indicated the need for additional regional access locations - one at CSAH 14/1-35W and one at 80th Street/l-35E. It does not appear that the EA W took these future changes into account. Changes in regional access would likely change the directional distribution and the overall affect on the adjacent intersections. . In regard to operations and capacity impacts for the proposed development: o The EA W analysis indicates that all intersections are currently operating at LOS C or better during the peak periods. In reviewing the CSAH 14 Study that was completed by SRF in 2004, the intersection of CSAH 14120th Avenue was found to operate at an