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FEIS - Tahoe Regional Planning Agency

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RESPONSE TO COMMENTS ON THE DEIS<br />

B o u l d e r B a y C o m m u n i t y E n h a n c e m e n t P r o g r a m P r o j e c t E I S<br />

Comment Letter 103 – Dahlgren Ph.D., Joy, 12/16/2009<br />

Comment 103-a: Comment Summary - Alt. C would increase trips and VMT because of additional<br />

workers and visitors to the site.<br />

Trip generation for Alternative C includes employees, guests, and non-guest visitors<br />

to the site. Please refer to Master Response 2, which compares the Proposed Project<br />

and Alternatives to an alternative existing baseline.<br />

Comment 103-b: Comment Summary - Alt. C trip generation estimates fail to consider external trips<br />

by guests to regional recreation, retail, and services beyond the Project Area.<br />

External project traffic estimates (vehicle trips in/out of the project area) include trips<br />

to the Project that are attracted to the onsite project amenities (non-guests) and trips<br />

to/from the proposed hotel/residential/interval ownership uses on the project area to<br />

other destinations (such as recreation, shopping, etc.). Master Response 3 provides<br />

additional clarification on internal/external Alternative mode trips. Master Response<br />

4 provides additional detail on project trip generation associated with accessory uses.<br />

Comment 103-c: Comment Summary - The EIS should disclose the base "Interacting Uses" numbers<br />

on which the "Internal Capture" numbers are based, and the interacting uses for the<br />

all "Raw Trips."<br />

Information on the interacting uses is provided in Appendix W of the DEIS. Master<br />

Response 3 provides additional clarification on internal/external Alternative mode<br />

trips including interacting uses.<br />

Comment 103-d: Comment Summary - The EIS should explain why Alt. C and A have different internal<br />

trip capture rates.<br />

Internal alternate mode rates, including on-site internal capture and off-site alternate<br />

modes, were developed specific to the type, size, and mix of the uses proposed for<br />

each Alternative. The number of internally captured walking trips between the<br />

project land uses was calculated by balancing the trips to correspond with the<br />

capacity of the lower trip generating use. Further explanation of the methodology<br />

used to calculate internal capture trips, as well as a visually representative figure, are<br />

provided in Master Response 3.<br />

Comment 103-e: Comment Summary - The trip generation numbers are incorrect. Trips were double<br />

counted when “Alternative Mode Split” factors were applied to the total number of<br />

“raw” trips, rather than only to external trips.<br />

The Alternative mode split and internal capture calculation were applied<br />

simultaneously to the raw project trips for each land use separately. There was not<br />

one percentage applied to the overall raw trip generation rate. The calculations were<br />

performed so that the internal/external alternate modes were analyzed based on<br />

specific land use type, size, and potential to interact with other on-site uses, off-site<br />

uses in close proximity, and transit opportunities. The Fehr & Peers Mixed Use<br />

Model and research looks at internally captured trips and off-site alternate mode trips<br />

as overall alternate modes because internal trips for mixed use sites are made via<br />

walking, bicycling, or transit depending on the size of the mixed use site. The model<br />

provides the overall “alternate modes” percentage for each use, which includes<br />

internal and external alternate modes, and a summary for the uses. The Fehr & Peers<br />

Mixed Use Model and research has been submitted to ITE, and will likely be<br />

included in future versions of the Trip Generation Handbook. The Fehr & Peers<br />

SEPTEMBER 8 , 2010 HAUGE BRUECK ASSOCIATES PAGE 8- 43

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