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HomeMy WebLinkAbout20251105_PJA25-0059_TIA Arlington hleiht Arlington THUNDERBIRD HANGARS TRIP GENERATION MEMORANDUM October 10, 2025 77 I H » � f 1: r � 1 i� � �• � 1. �r _ ") M��,T��M�`. l- -- - ( - ------ N- .-.. � 11►WMC»r..ry�i JTE . Jake Traffic Engineering, Inc. Mark J.Jacobs, PE (OR and WA), PTOE, President 2614 39th Ave.SW - Seattle, WA 98116 - 2503 Tel. 206.762.1978-Cell 206.799.5692 E-mail jaketraffic@comcast.net 1 12 1 CY JTF . Jake Traffic Engineering, Inc. . Mark J. Jacobs, PE, PTOE President 2614 3911 Ave. SW - Seattle, WA 98116 - 2503 Tel. 206.762.1978 - Cell 206.199.5692 E-mail ;, October 10, 2025 JSH PROPERTIES, INC. Attn: Stephen J Hansen 8383 158th Ave NE., Suite #200 Redmond, WA 98052 Re: Thunderbird Hangars - Arlington Trip Generation Memorandum Dear Mr. Hansen, I am pleased to provide this Trip Generation Memorandum for the two - Airplane Storage Units to be located at 18210 59th Avenue Northeast. Access to the site would be via a driveway onto a paved roadway that has access to 59th Drive Northeast. The purpose of this Trip Generation Memorandum is to provide the city with a projection of the site traffic volumes and inspect the site access. Below is an aerial view of the site, augmented, obtained from Snohomish County SCOPI: � f, tr iI l i 1i - Project We I �`ti• IL f :a WanohomishCounty Thunderbird Hangars-Arlington r`= Assessor - \`1�•nna\-h.Act flu\20]9 dal Sr.....,.Nd N.ry. 15N nC(Vl..Ar+span\fnuid.n,.HN..jvM.byn.nlnt'd.nar..Jx.W nui.ndum da COLOR COPY ONLY 71 JSH PROPERTIES, INC. Attn: Stephen J Hansen October 10, 2025 Page-2- The site is included in four parcels of land owned by several parties. I have prepared this Trip Generation Memorandum per the following: Chapter 20.90-ConcurrencX • Traffic Impact Analysis or Memorandum is required. (Estimate from ITE Manual LUC 151 for Airplane Hangars.This calculation is 1.95 trips per 100 units). • City Traffic Impact Fees are required at a rate of$3,355.00 per PM Peak Hour Trip. • Cascade Industrial Center Traffic Impact Fees are required at a rate of$5,841.39 per PM Peak Hour Trip. A preliminary site plan prepared by Magellan Architects dated 09.19.2024 is attached. The plan includes two - Airplane Storage Units. Access to the site is via a driveway onto a paved roadway that has access to 59t" Drive Northeast. Full development and occupancy of the proposed Thunderbird Hangars project is anticipated to occur by 2026, presuming the permits are issued in a timely manner. Trip Generation Definitions A vehicle trip is defined as a single or one direction vehicle movement with either the origin or destination (exiting or entering) inside the proposed development. Traffic generated by development projects consists of the following types: Pass-By Trips: Trips made as intermediate stops on the way from an origin to a primary destination. Diverted Link Trips: Trips attracted from the traffic volume on roadways within the vicinity of the generator but require a diversion from that roadway to another roadway to gain access to the site. Captured Trips: Site trips shared by more than one land use in a multi-use development. Primary(New)Trips: Trips made for the specific purpose of using the services of the project. Trip Generation The proposed Thunderbird Hangars project is expected to generate the vehicular trips during the average weekday, street traffic AM and PM street peak hours as shown in Table 1. The trip generation for the project is calculated using trip rates from the Institute of Transportation Engineers (ITE)Trip Generation, 12th Edition, for Mini-Storage (ITE Land Use \y;e_nc\:\-Fe,wt iitnVOJ,CC7 inM..e,rl M.rt..15M P:r•-u.a..n enVnuareuf.•.re•.:Cm.nt T.le+en.•.:•.ANm,ranam ecc COLOR COPY ONLY JTE, Inc. JSH PROPERTIES, INC. Attn: Stephen J Hansen October 10, 2025 Page-3- Code 151); per prior City notes that I concur with. All site trips made by all vehicles for all purposes, including commuter,visitor, and service and delivery vehicle trips are included in the trip generation values TABLE 1-TRIP GENERATION THUNDERBIRD HA IGARS-ARLINGYON TRIP GENERATION MEMDRArDUM Pas,{ry {bssby Net Tune Period Sim OO TG RaL I Enter% Enter Trips I Exit% I Exit Trips Total(n %` Trfa Total Storage: Min(Storage(ITE LUC 151;2 units) Weekday 1 21 0.1796 1 5036 0,2 1 50?5 1 021 0.4 - I - c A.Mpeakhour 1 21 0.0117 1 52% 1 0.0 1 48 0.01 0.0 - I - 0.0 PM peak hour 1 21 0.0184 51?E 1 0.0 49- 1 aol 0.0 - I - ac 111iere X-per unit(100 units r i E Mini Storage data).T-Trips ITE Trip Generation Manual 12th Edition and JTF Inc.data ••per JIE Inc.experience•there would be some pass-by traffic;mall/service and delivery vehicles and some people swinging by on there way to or from another destlnatlon. No refinement to the site traffic generation Is taken for pass-by traffic. Note: Due to rounding some values may not add up. The Thunderbird Hangars project is projected to generate few additional trips to the city street grid, less than one trip occurring during the PM street peak hour. Access Inspection I have inspected the site access sight lines at the proposed access using Google Street View, see photographs below- r�• i , i� 4. -ftcen r ThaMardrd Names - _ OF mwu LoYl�1g llarilN _ Wi.Mcv\•nert f•Y�076 Dal TRMvbrl N•ry•r RN h:•Ka,.V�rten\I•Yip•N�r9.r{v}.•toC'^M41uveMNse.JYmennaum tlae COLOR COPY ONLY JTE, Inc. JSH PROPERTIES, INC. Attn: Stephen J Hansen October 10, 2025 Page -4- 9 _ -AecQsa lnoktng South Via Traffic Engineering Inspection appropriate sight lines are available at the accesses, presuming no signage, vegetation or vehicles are in the sight triangle. Traffic Impact Mitigation The City has a Citywide Traffic Impact Fee per AMC 20.90.040(a) with a rate of$3,355 per new PM peak hour trip. In addition, per Ordinance #2021.002 projects located in the Cascade Industrial Center Planned Action Area pay an additional fee of$5,841.39 per new PMPHT. Table 2 depicts the projected TIF for the project based on the noted rates: TABLE 2-TRAFFIC IMPACT FEE THUNDERBIRD HANGARS-ARLI%TON TRIP GENERATION MEMORANDUM Use PMPHTsl Gityvtide TI F Estimated TI G1C TIF JES1jM2ted Ci Total Airplane Hangars O.0 1 = 123 1 S5,-? l! = 215 1 338 Citywide TIF per AMC 20.90.040(a) Cascade Industrial Center per City Crdinance 2021.002 Note: The calculations are to the nth degree and reflect the current City rates provided_ The rates do not vest and may increase in the future. Summary This Trip Generation Memorandum provides the Trip Generation projection for the two - Airplane Storage Units to be located at 18210 59th Avenue Northeast. Based on my analysis, r _ „ ,.t li••\:J:J rii .•rGird l•r(•r 1:41'•:.•1 t.A.n(t?r\1huJ•ri. •.rC..•.i rrntli1: r.t.m-Jr:.; COLOR COPY ONLY JTE, Inc. JSH PROPERTIES, INC. Attn: Stephen J Hansen October 10, 2025 Page-5- the proposed project is projected to generate less than one net new PM peak hour trip. The City collects TIF's for development projects, I have estimated the fee at about $338 based on the fee rates previously provided by the City, the TIF rates do not vest and may increase in the future. Inspection of the site access driveway showed good sight lines. Based on my analysis, I recommend that the Thunderbird Hangars project be allowed with the following transportation mitigation measures: - Construct the site improvements per applicable City requirements. - Pay the applicable City Traffic Impact Fees Please contact me at 206.762.1978 or email me at jaketraffic@comcast.net if you have any questions. 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'J.•:i7:VJ,r.4:Y:Y.Y.•.±.•1.;.Yh!rt1!.,4 `h11Yi;iYik'�: :f:: .. � I i rx rw a-fr — rn rw r�rR ra •;rt;:]F �� a Z : .� g t: y ,s t• @ ti....'iYAr,'d. ® j Pv araa L' Z ,L90dY1V N0.LaV17HV APPENDIX jaketraffic@comcast.net From: Thad Newport <tnewport@arlingtonwa.gov> Sent: Monday, October 6, 2025 9:23 AM To: Steve Hansen; Kristin Foster;jaketraffic@comcast.net Cc: lavellejeff39@gmail.com Subject: RE:Thunderbird Hangar Flag Status: Flagged Mark, I think the traffic analysis should be pretty straightforward for this project.The City has a Traffic Analysis Procedures and Checklist document available on our website here: Tra fic-Atlaly_sis.-2r_ocedure�nd- Checl(list-PDF. We use PM peak hour trips for analysis and the applicable ITE Trip Generation Land Use rate by default, but if you feel a custom analysis would be more accurate/beneficial we are open to that as well. If you have any questions, please let me know. Thad Newport Development Services Engineering Manager Arlington Community&Economic Development 18204 59"'Ave NE,Arlington,WA 95223 P.(360)403-3434 1 E.tnewport@arlingtonwa.gov I W.www.arlinatonwa.gov Note: Emails and attachments sent to and from the City of Arlington are public records and may be subject to disclosure pursuant to the Public Records Act. 0 Book time to meet with me From: Steve Hansen <steveh@jshproperties.com> Sent: Friday, October 3, 2025 12:44 PM To: Kristin Foster<kfoster@arlingtonwa.gov>;jaketraffic@comcast.net Cc: lavellejeff39@gmaii.com;Thad Newport<tnewport@arlingtonwa.gov> Subject: RE:Thunderbird Hangar This message is from an External Sender This message came from outside the City of Arlington I'll do it now. Marc, meet Thad Newport. If you could contact him, that would be great. Thanks, Steve. STEPHEN 3 HANSEN 3SH Properties, Inc. MAIL: 8383 158u' Ave NE., Suite #200 1 Redmond, WA 98052 D: 425.283.5450 steveh@jshproperties.com I www.jshl2roperties.com ARM JSH I PROPERTIES , INC. From: Kristin Foster<kfoster@arlingtonwa.gov> Sent; Friday, October 3, 2025 9:02 AM To: Steve Hansen<steveh@ishproperties.com> Cc: lavelleieff39@gmail.com;Thad Newport<tnewport@arlingtonwa.gov> Subject: RE:Thunderbird Hangar Good morning, For the traffic mitigation, it may be best to have a conversation with our Development Services Manager, Thad Newport prior to hiring an engineer. I'll have him reach out to you. Thanks, 1(ristin roster- Permit Technician II Community and Economic Development 18204 59M Ave NF,,Arlington,WA 98223 P.(360)403-3545 E.kfoster@arlingtonwa.gov From: Steve Hansen <steveh Dish ro)erties.com> Sent:Thursday, October 2, 2025 9:30 PM To: Kristin Foster<kfoster@arlingtonwa.gov> Cc: lavelleieff39@gmail.com Subject: FW:Thunderbird Hangar This message is from an External Sender This message came from outside the City of Arlington Kristin,thanks for all of your help. Enclosed is the Critical Areas statement and the Water/Sewer Availability request. In a different email, I will send the drainage report. Also, I talked with Mark Jacobs (Russ Keyes traffic engineer)today and we will most likely hire him to do a study for the mitigation. Thanks so much, Steve. STEPHEN J HANSEN JSH Properties, Inc. MAIL: 8383 158u' Ave NE., Suite #200 Redmond, WA 98052 D: 425.283.5450 steveh@jshproperties.com I www.jshproRerties.com v/ JSH PROPERTIES , INC. 2 TRAFFIC ANALYSIS - PROCEDURES & CHECKLIST Community&Economic Development City of Arlington • 18204 59`h Avenue NE • Arlington, WA 98223 • Phone (360)403-3551 All Commercial and Multi-family Development Projects submitted to the City of Arlington must include a traffic analysis. The traffic offer for each project shall include the items listed in the attached checklist according to the following breakdown: • Projects generating fewer than ten (10) P.M. peak hour trips are required to complete � o Section I (Project Description); o Section II (Trip Generation); o Include projects that can demonstrate a net reduction in traffic generated within the City of Arlington. • Projects generating at least ten (10) P.M. peak hour trips, but fewer than seventy-five (75) P.M. peak hour trips are required to complete o Section I (Project Description); o Section II (Trip Generation); o Section III (Trip Distribution); o Section IV (Traffic Volumes); o Section V (Level of Service); o Section VI (Mitigation Requirements). • Projects generating seventy-five (75) or more P.M. peak hour trips are required to complete all sections. Revised M2013 TRAFFIC ANALYSIS PROCEDURES & CHECKLIST Community& Economic Development City of Arlington • 18204 59�h Avenue NE • Arlington, WA 98223 Phone (360)403-3551 I. PR JECT DESCRIPTION IT Location (vicinity map & site plan) Horizon year (year of completion &full occupancy) Type, size and location of development II. TRIP GENERATION (ITE Trip Generation Manual, Current Edition) PM peak hour trips ❑ Assumption and methodology for pass-by trips l� III. TRIP DISTRIBUTION ❑ Show distribution percentages on vicinity map/diagram IV. TRAFFIC VOLUMES ❑ Existing PM peak hour counts &date (< 2 years old) ❑ Future PM peak hour trips with /without project ❑ The annual growth rate factor (%) and its source ❑ Include the trips from pipeline developments (provided by Community Development) V. LEVEL OF SERVICE (LOS) CALCULATIONS ❑ At intersections impacted by 10 or more peak hour trips from the development ❑ • Signalized I /S ❑ • Un-signalized I / S ❑ LOS calculation sheets must be included ❑ All assumptions should be noted for volume reductions, saturation flow rates, splits, etc., and their basis VI. MITIGATION RECOMMENDATIONS ❑ Local Agency Interlocal guidelines ❑ LOS deficiencies ❑ Right of way frontage improvements ❑ Installation of a signal (warrant analysis per MUTCD must be included) ❑ Possible mitigation coordinated with other pipeline projects ❑ Impact fee calculation VI I. ACCIDENT ANALYSIS ❑ An accident analysis at critical intersections (provided by Community Development) ❑ Current 3 year accident history (data may be obtained for the Arlington Police Department) ❑ Collision diagrams ❑ A discussion of both of the above, including the predominant accident types and their locations, any accident patterns, an assessment of the development's traffic safety impact, and mitigation for its safety impact VIII. SUBMITTAL REQUIREMENTS ❑ Two (2) copies of Traffic Analysis ❑ Traffic Analysis report must be signed and stamped by a Professional Engineer Rovisod 1012013