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Home My WebLink About2025-08-21 Kittelson Response Letter to ACHD Charlene Way From:Sonya Allen Sent:Thursday, August 21, 2025 2:00 PM To:Clerks Comment Subject:FW: PINE 43 Proposed Updates - Trip Generation Comparison Attachments:17019806 - N Webb Ave -- E Pine Ave.pdf From: Deborah E. Nelson <den@givenspursley.com> Sent: Thursday, August 21, 2025 12:22 AM To: Sonya Allen <sallen@meridiancity.org> Subject: FW: PINE 43 Proposed Updates - Trip Generation Comparison \[GP-DMS.017495.0002.FID1200438\] External Sender - Please use caution with links or attachments. Hi Sonya, I just want to make sure Kittelson’s response to ACHD comments is included in the record. Thanks, Deb From: Jamie Markosian <jmarkosian@kittelson.com> Sent: Tuesday, August 19, 2025 2:02 PM To: Mindy Wallace <Mwallace@achdidaho.org> Cc: Matthew Hagen <mhagen@kittelson.com>; Sonia Daleiden <sdaleiden@kittelson.com>; Brian McClure <bmcclure@meridiancity.org>; Bill Parsons <bparsons@meridiancity.org>; Sonya Allen <sallen@meridiancity.org>; Deborah E. Nelson <den@givenspursley.com> Subject: Re: PINE 43 Proposed Updates - Trip Generation Comparison EXTERNAL Mindy, Thanks for the prompt response and your review of the trip generation and traffic due diligence. We will update the memo recipients to City staff, per your request. I also have the following responses/clarifications for ACHD comments in blue below.  The memo utilized a pass-by capture rate of 47% in the AM, 41.5% in the PM, and 41.5% overall for Land Use 821. These rates are generally very high. It is typical to utilize an AM pass-by trip capture of 0% for Land Use 821 since many stores are not open during morning rush hour. We agree to remove the pass-by rates for the AM period. We have gone ahead and updated the pass-by percentages to the following: Overall - 30% (0% AM Peak Hour, 25% PM Peak Hour). Based on the intended commercial uses in the development, we feel this is a reasonable estimate for pass-by trips.  Based on proposed trip generation, there is no anchor supermarket for the retail portion of the development. Supermarkets are usually the primary driver of pass-by trips for a retail plaza, so the 1 pass-by capture percent should be further reduced accordingly. Refer to percentages presented in previous bullet point that we feel reasonably represent the intended uses here.  Internal trip capture calculations assume the entire development will function as one site. This is not accurate, as many “internal” trips require vehicles to utilize Pine Avenue or Webb Avenue and will impact operations of the Pine Avenue/Web Avenue roundabout. The overall internal trip capture of 2,533 also utilizes a higher internal trip capture rate than either the AM or PM peak hours, with no supporting calculations. Thanks for this comment. We used the internal capture methodology and rates following NCHRP 684 procedures. Some clarification as to why we considered this as one single site with regards to internal capture: the site is relatively constrained on a block-by-block basis in terms of parking relative to the associated land uses that require those parking spaces. To accommodate the necessary parking for the various land uses, the site utilizes an underground structure that will be located in the NW corner of the Pine/Webb intersection and provides the primary parking capacities to accommodate most of the site. For this reason, we felt it was reasonable to assume the site functioning as one collective of land uses versus splitting the internal trip capture out by parcel/block in the development (i.e., folks wishing to visit a certain area of the site will most likely be parking in the underground structure and walking to their desired destination, including walking to uses in the SW, NE, SE quadrants of the project). o Considering the changes in pass-by rates described above and retaining the internal capture methodology as described (i.e., single site not independent blocks), the following table illustrates the overall change in net new trips between 2017 and 2025: o Additionally, we considered the internal capture of each quadrant of the Pine/Webb intersection independently and applied the same pass-by trip rates previously described to yield the following overall change in net new trips between 2017 and 2025:  To provide additional context for the magnitude of these trip generation changes. We looked at recent traffic counts that were collected at Pine/Webb in April 2025 (see attached) and depending on the internal capture methodology, the updates to the PINE 43 development in this area are estimated to produce less than 10% of the total entering volumes at the Pine / Webb intersection (and this conservatively assumes all the trips to/from PINE 43 will travel through the Pine / Webb intersection). o Peak Hour Total Entering Vehicles (April 2025) = 1,701 vehicles between 4:25 and 5:25 PM  With internal capture as total site, PM Peak Hour Net New Trips = 94 (5.5% of peak hour)  With internal capture as independent blocks, PM Peak Hour Net New Trips = 165 (9.7% of peak hour) I will add this information to the memo along with the changes to addressees and send in a forthcoming email but wanted to provide this detail for you and City staff in preparation for the 8/21 hearing. 2 Please let me know if you have any questions. Thanks! Jamie Jamie Markosian Senior Engineer (he/him) Kittelson & Associates, Inc. Transportation Engineering & Planning 208.338.2683 208.472.9813 (direct) From: Mindy Wallace <Mwallace@achdidaho.org> Sent: Monday, August 18, 2025 9:14 AM To: Jamie Markosian <jmarkosian@kittelson.com> Cc: Matthew Hagen <mhagen@kittelson.com>; Sonia Daleiden <sdaleiden@kittelson.com>; Brian McClure <bmcclure@meridiancity.org>; Bill Parsons <bparsons@meridiancity.org> Subject: RE: PINE 43 Proposed Updates - Trip Generation Comparison \[External Sender\] Hi Jamie, Thank you for the reminder. I would ask that the memo be revised since ACHD did not ask for this additional information, the City of Meridian did. Please check with Brian McClure and Bill Parsons to ensure that the memo answers all their questions prior to your hearing. Based on the memo provided ACHD does have the following comments.  The memo utilized a pass-by capture rate of 47% in the AM, 41.5% in the PM, and 41.5% overall for Land Use 821. These rates are generally very high. It is typical to utilize an AM pass-by trip capture of 0% for Land Use 821 since many stores are not open during morning rush hour.  Based on proposed trip generation, there is no anchor supermarket for the retail portion of the development. Supermarkets are usually the primary driver of pass-by trips for a retail plaza, so the pass-by capture percent should be further reduced accordingly.  Internal trip capture calculations assume the entire development will function as one site. This is not accurate, as many “internal” trips require vehicles to utilize Pine Avenue or Webb Avenue and will impact operations of the Pine Avenue/Web Avenue roundabout. The overall internal trip capture of 2,533 also utilizes a higher internal trip capture rate than either the AM or PM peak hours, with no supporting calculations. These comments are only a general overview and don’t constitute a full review by ACHD. Let me know if you need anything else. Mindy 3 Mindy Wallace, AICP Planning Review Supervisor| Development Services Ada County Highway District (ACHD) Phone: (208)387-6178 www.achdidaho.org Connect with us on social! @achdidaho From: Jamie Markosian <jmarkosian@kittelson.com> Sent: Monday, August 18, 2025 8:54 AM To: Mindy Wallace <Mwallace@achdidaho.org> Cc: Matthew Hagen <mhagen@kittelson.com>; Sonia Daleiden <sdaleiden@kittelson.com> Subject: Re: PINE 43 Proposed Updates - Trip Generation Comparison Caution: This is an external email and has a suspicious subject or content. Please take care when clicking links or opening attachments. When in doubt, contact your IT Department Hi Mindy, A few weeks ago, we spoke about you having a few comments for us on this memorandum RE: PINE 43 updates. Can you advise the status of these comments? We're trying to have everything sorted out before the P&Z hearing at the City this coming Thursday (8/21). Thanks! Jamie Jamie Markosian Senior Engineer (he/him) Kittelson & Associates, Inc. Transportation Engineering & Planning 208.338.2683 208.472.9813 (direct) From: Jamie Markosian Sent: Wednesday, July 16, 2025 7:20 AM To: Mindy Wallace <mwallace@achdidaho.org>; Sam Standal <sstandal@achdidaho.org>; Brandon Atchley <batchley@achdidaho.org>; Bill Parsons <bparsons@meridiancity.org>; Sonya Allen <sallen@meridiancity.org>; canderson@meridiancity.org <canderson@meridiancity.org> Cc: Dan Torfin (dan@da-land.com) <dan@da-land.com>; Deborah E. Nelson <den@givenspursley.com>; 4 Matthew Hagen <mhagen@kittelson.com>; Sonia Daleiden <sdaleiden@kittelson.com> Subject: PINE 43 Proposed Updates - Trip Generation Comparison Mindy, Bill, Sonya - As you know, we have been supporting the PINE 43 Development team with some updated transportation due diligence over the past year and a half as they have been re-imagining the development south of State Avenue. Per our recent discussions, we have prepared the attached technical memorandum documenting the trip generation comparison between the accepted TIS from 2017 and the proposed updates to the site plan. This information was presented to ACHD in February 2024 and has been revised to account for the latest updates to the site plan. We assume the information presented in this memorandum clarifies and satisfies the City's and District's requirements for this transportation due diligence. If you have any questions, please don't hesitate to reach out. Thanks! Jamie Jamie Markosian Senior Engineer (he/him) *** Please Note: I will be out of the office 7/16-7/20 *** Kittelson & Associates, Inc. Transportation Engineering & Planning 101 South Capitol Boulevard, Suite 600 Boise, ID 83702 208.338.2683 208.472.9813 (direct) Kittelson Bio LinkedIn Bio Follow us on our socials! LinkedIn | Instagram | YouTube 5