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Home My WebLink AboutItem #2 Academy Campus/a 0�t\ CHUBBUCK I o A H o Community Services Department Development Services Division 290 E. Linden Avenue, Chubbuck, ID 83202 208.237.2430 — Fax 208.237.2409 www.CityofChubbuck.us THE ACADEMY CAMPUS PRELIMINARY PLAT REQUEST - STAFF REPORT CITY OF CHUBBUCK LAND USE AND DEVELOPMENT COMMISSION REGULAR MEETING ON MAY 10, 2022 STAFF FINDINGS SUMMARIZED After reviewing the proposed The Academy Campus preliminary plat, Staff finds that it meets the code requirements with the following comments: • Additional right-of-way for Philbin Road needs to be dedicated to meet the requirement of 50' from centerline. • The property within the bounds Lot 2, Block 2 of this proposed subdivision is zoned Agriculture (A) and Limited Residential (R-2). In accordance with Title 16.12.030.G, the property will need to be re -zoned. • The applicant is requesting to waive requirements of Title 16.12.020.Q (street widening, curb & gutter, and sidewalk) along the Philbin Road frontage of lot 1, block 1. • Secondary irrigation facilities will be required to be designed and constructed in accordance with section 16.12.230 of city code. • Preliminary Plat recommendations are conditional upon City Council approval of the preliminary plat for The Academy Campus. • See Exhibit 8 — Traffic Impact Analysis Letter from the City Engineer, Bridger Morrison. STAFF RECOMMENDATION: Staff recommends approval of the preliminary plat with the following conditions: • A Change of Land Use application be submitted prior to submittal of the final plat. • Additional right-of-way be dedicated to meet the requirement of 50' from centerline along the Philbin Road frontage of lot 1, block 1 within the submittal of the final plat. • The requirements of Title 16.12.020.Q be met providing street widening, curb & gutter, and sidewalk along the Philbin Road frontage of lot 1, block 1. • An irrigation pump fee of $2,971.90 per acre be collected with each building permit issued. FACTS REQUEST: The applicant proposes a 5 lot Preliminary Plat for 5 commercial building lots in the The Academy Campus subdivision. It includes improvements for the previously dedicated but unimproved Alpine Avenue, and additional dedication and improvements for Alpine Ave. including the extension of public utilities. BACKGROUND: This is a replat of The Academy subdivision and includes additional acquired property. TYPE OF COMMISSION ACTION: Quasi -Judicial (Subject to appeal; decisions must be supported by the evidence and by applying law to the facts; decisions shall be based on the standards for approval). Recommendation/approval of this preliminary plat shall be whether it meets the requirements of the City of Chubbuck ordinance and State of Idaho statutes. The Commission may recommend approval with or without conditions, may table a decision, or may recommend denial of the application. OWNER: The Academy Inc. 1295 Alpine Ave. Chubbuck, ID 83202 PROFESSIONAL SERVICES: Dioptra 4880 Clover Dell Road Chubbuck, ID 83202 LOCATION: NW 1/4 of Section 9, Township 6 South, Range 34 East, of the Boise Meridian, on the east side of Philbin Road north of Interstate 86. Generally located at 1295 Alpine Ave. SITE CHARACTERISTICS & ZONING: CURRENT ZONING: Agriculture (A), Limited Residential (R-2) CURRENT LAND USE: Elementary School / Vacant VIEWS: Generally visible from all directions TOPOGRAPHY: Generally flat EXISTING STRUCTURES: Elementary School SURROUNDING LAND USES AND ZONING NORTH: Agriculture; Limited Residential (R-2) zone EAST: Residential; Limited Residential (R-2) zone SOUTH: Residential; City of Pocatello Residential High Density (RH) zone WEST: Light Industrial; Bannock County Light Industrial zone SERVICES: ACCESS STREET: Current access from Alpine Ave. FIRE/EMS PROTECTION: City of Chubbuck Fire Department. SANITARY SEWER: City of Chubbuck Sewer Utility Department. CULINARY WATER: City of Chubbuck Water Utility Department. PROCEDURES: RECENT TRAFFIC COUNTS: 2021: Philbin Rd at Chubbuck Rd, 6896/day 2021: Philbin Rd at Yuma St, 7260/day In accordance with City Code 17.12.030-050 and Resolution 2020-03, a complete petition and fees for a preliminary plat were filed with the City and which contained the appropriate documents and waiver requests pursuant to 17.12.040. In accordance with City Code 17.12.100, the application is scheduled to be heard at the May 10, 2022 Regular Meeting of the Land Use and Development Commission. In accordance with City Code 17.12.080, notice were provided as follows: a. Notices posted on the subject property. b. Notices provided to City departments, other government agencies, and affected public utility providers. APPLICABLE LAWS AND PLANS: 194�0t\ CHUBBUCK 1 0 290 E. Linden Avenue, Chubbuck, ID 83202 208.237.2430 — Fax 208.237.2409 www.CityofChubbuck.us 1. Idaho Code a. §50-13, Plats and Vacations b. §67-6513, Subdivision Ordinance Chubbuck Comprehensive Plan (as amended) Chubbuck City Code a. Title 16, Land Improvement Standards b. Title 17, Land Development C. Title 18, Land Use PUBLIC COMMENTS: 1. No written comments were received as of this report. 1940�t-\ CHUBBUCK 1 0 290 E. Linden Avenue, Chubbuck, ID 83202 208.237.2430 — Fax 208.237.2409 www.CityofChubbuck.us STANDARDS FOR REVIEWING A PRELIMINARY PLAT 1. Does the Preliminary Plat comply with applicable laws and ordinances? CITY CODE TITLE 17- LAND DEVELOPMENT Compliant Standards and Staff Comments Yes No N/A City Code City Standard and Staff Comments x 17.12.030, Copies to be Submitted, Notice and Fee 17.12.050 Staff The applicant has completed the requirements of these Comments sections. Department Public Works: x Comments The department has reviewed the applicant's proposal for compliance and finds that it meets the code requirements. Concerns have been addressed by the applicant. x Department Maintenance / Operations: Comments The department has reviewed the applicant's proposal for compliance and finds that it meets the code requirements. Concerns have been addressed by the applicant. x Department Fire Department: Comments The department has reviewed the applicant's proposal for compliance and finds that it meets the code requirements. No comments received. x Department Police Department: Comments The department has reviewed the applicant's proposal for compliance and finds that it meets the code requirements. Concerns have been addressed by the applicant. No concerns. CITY CODE TITLE 17 — PRELIMINARY PLAT STANDARDS Compliant Standards and Staff Comments Yes No N/A City Code City Standard and Staff Comments x 17.12.150 Form of Presentation Staff Applicant has provided all information required of this section. Comments x 17.12.160 Identification and Descriptive Data Staff Applicant has provided all information required of this section. Comments x 17.12.170 Existing Conditions Data Staff Applicant has provided a preliminary plat showing existing Comments contours, locations of existing water and sewer systems, street names and rights-of-way, and all other information required of this section. x 17.12.180 Proposed Conditions Data 1940�t-\ CHUBBUCK 1 0 290 E. Linden Avenue, Chubbuck, ID 83202 208.237.2430 — Fax 208.237.2409 www.CityofChubbuck.us CITY CODE TITLE 18- LAND USE Compliant Standards and Staff Comments Yes No N/A City Code City Standard and Staff Comments x 18.08.042A Height and area Regulations Staff Not applicable at this time. Comments x 18.08.044 Lot Width to depth ratio Staff Not applicable at this time. Comments PUBLIC IMPROVEMENT REQUIREMENTS Improvement Description Water mainlines with services will be constructed and connected to existing Water Staff Applicant has provided a preliminary plat showing proposed Sewer mainlines with services will be constructed and connected to existing Sewer sewer mainlines. Comments conditions including lot dimensions, easement use and 16.12.020C and in accordance with the comprehensive plan. Applicant is Streets requesting to waive requirements of Title 16.12.020.Q (street widening, curb & locations, and street layout including proposed dedication of utter, sidewalk) along the Philbin Road frontage of lot 1, block 1. Storm water from the street will be retained in the roadway drainage swale, while Storm Drainage additional right-of-way. x Secondary irrigation facilities will be designed and constructed in accordance Irrigation 17.12.190 Proposed Utility Methods Staff Water and sewer will be extended into the development, Comments applicant has provided service locations shown on the preliminary plat. CITY CODE TITLE 18- LAND USE Compliant Standards and Staff Comments Yes No N/A City Code City Standard and Staff Comments x 18.08.042A Height and area Regulations Staff Not applicable at this time. Comments x 18.08.044 Lot Width to depth ratio Staff Not applicable at this time. Comments PUBLIC IMPROVEMENT REQUIREMENTS Improvement Description Agency BTPO Bureau of Indian Affairs Cable One Century Link Direct Communications ID Fish and Game ID Transportation Idaho Power Intermountain Gas School District 25 CHUBBUCK 1 0 OTHER AGENCY COMMENTS AND REQUIREMENTS No comment received. No comment received. No comment received. No comment received. No comment received. No comment received. No comment received. No comment received. No comment received. No comment received. Comment 290 E. Linden Avenue, Chubbuck, ID 83202 208.237.2430 — Fax 208.237.2409 www.CityofChubbuck.us Water mainlines with services will be constructed and connected to existing Water water mainlines. Sewer mainlines with services will be constructed and connected to existing Sewer sewer mainlines. Right-of-way has been dedicated and the street will be constructed per 16.12.020C and in accordance with the comprehensive plan. Applicant is Streets requesting to waive requirements of Title 16.12.020.Q (street widening, curb & utter, sidewalk) along the Philbin Road frontage of lot 1, block 1. Storm water from the street will be retained in the roadway drainage swale, while Storm Drainage storm water from the lots will be required to be retained on site. Pressurized Secondary Secondary irrigation facilities will be designed and constructed in accordance Irrigation with section 16.12.230 of city code. Parks N/A non-residential development Agency BTPO Bureau of Indian Affairs Cable One Century Link Direct Communications ID Fish and Game ID Transportation Idaho Power Intermountain Gas School District 25 CHUBBUCK 1 0 OTHER AGENCY COMMENTS AND REQUIREMENTS No comment received. No comment received. No comment received. No comment received. No comment received. No comment received. No comment received. No comment received. No comment received. No comment received. Comment 290 E. Linden Avenue, Chubbuck, ID 83202 208.237.2430 — Fax 208.237.2409 www.CityofChubbuck.us SE Idaho Public Health No comment received. US Postal Service No comment received. 1940�t-\ CHUBBUCK 1 0 290 E. Linden Avenue, Chubbuck, ID 83202 208.237.2430 — Fax 208.237.2409 www.CityofChubbuck.us EXAMPLE MOTIONS APPROVAL: Having reviewed the petition materials, staff report, and all testimony presented before and by the City in this hearing as part of the record against criteria established by City Code 17.12.100, and having found that those criteria for approving a preliminary plat request are satisfied, I move to recommend approval of the preliminary plat as described in the application materials to the City Council with the following conditions and waiver recommendations: 1. (if found necessary by LUDQ. APPROVAL (NO CONDITIONS): Having reviewed the petition materials, staff report, and all testimony presented before and by the City in this hearing as part of the record against criteria established by City Code 17.12.100, and having found that those criteria for approving a preliminary plat request are satisfied, I move to recommend approval of the preliminary plat as described in the application materials. DENIAL: Having reviewed the petition materials, staff report, and all testimony presented before and by the City in this hearing as part of the record against criteria established by City Code 17.12.100, and having found that those criteria for approving a preliminary plat request are not satisfied, I move to recommend denial of the preliminary plat request as described in the application materials. I find that the petition fails to comply with... [CITE SPECIFIC STANDARD WHICH IS NOT MET AND DESCRIBE WHY IT WAS NOT MET]. SPECIAL CONSIDERATIONS FROM IDAHO CODE: • I.C. 67-6513: Denial of a subdivision permit or approval of a subdivision permit with conditions unacceptable to the landowner may be subject to the regulatory taking analysis provided for by section 67-8003, Idaho Code, consistent with the requirements established thereby. REPORT: Sean Harris, Development Services Staff comments in this report are based solely Manager sharris@cityofchubbuck.us (208) 237-2430 DATE: April 28, 2022 1. Reference Map 2. Application for Preliminary Plat 3. Plat 4. Narrative for Preliminary Plat 5. Maps a. Future Land Use 194�0t\ CHUBBUCK 1 0 upon evidence available at the time of the report. Additional information may be brought to light at or before the hearing. EXHIBITS 290 E. Linden Avenue, Chubbuck, ID 83202 208.237.2430 — Fax 208.237.2409 www.CityofChubbuck.us b. Current Zoning 6. Evidence of Notice a. Site Postings b. Agency notices on file w/staff 7. Traffic Impact Analysis 8. Traffic Impact Analysis letter from City Engineer 9. Email from Community Services Director to Applicant 1940�t-\ CHUBBUCK 1 0 290 E. Linden Avenue, Chubbuck, ID 83202 208.237.2430 — Fax 208.237.2409 www.CityofChubbuck.us Exhibit 1: Reference Map - The Academy Campus Interstate 86 CHUBBUCK lonflo 290 E. Linden Avenue, Chubbuck, ID 83202 208.237.2430 — Fax 208.237.2409 www.CityofChubbuck.us CHUBBUCK 1 0 290 E. Linden Avenue Chubbuck, ID 83202 208.237.2430 — Fax 208.237.2409 www.CityofChubbuck.us PRELIMINARY PLAT APPLICATION Aug. 2021 Form PAGE 1 OF 5 Requirements and procedures for Preliminary Plat applications are found in section 17.12.030 — 1712.190 of municipal code. The following must be completed and submitted with all required documents in order to progress to the next stage of the review process; failure to submit a complete application packet may result in additional fees. DATE RECEIVED: INITIALS: FEES PAID? Y N AMOUNT: SECTION A -DEVELOPER/APPLICANT INFORMATION Al. Name The Academy Inc. A2. Mailing Address 1295 Alpine Ave City State Zip Code Chubbuck ID 83202 A3. Phone Number (including area code) A4. Email Address 208-232-1447 joel.lovstedt@adademycharter.net SECTION B - PROFESSIONAL SERVICES INFORMATION B1. Firm Name Dioptra B2. Mailing Address 4880 Clover Dell Rd City State Zip Code Chubbuck ID 83202 B3. Point of Contact (Name) 34. Email Address Stewart Ward stewart@dioptrageomatics.com SECTION C -SITE INFORMATION C1. Site Address City Zip C2. Tax Parcel #(s) 1295 AlIne Ave Chubbuck $3202 p RPRCCPCO25728, RPRCCPCO25730, RPRCCPCO25731, RPRCACA000100 C3. Current Land Use C4. Are there existing structures on-site? Chubbuck Limited Residential 0 Yes ❑ No C5. Is the site under contract or in the name of the developer/applicant? C6. Approximate size of property 0 Yes ❑ No 17.36 Acres C7. Are there any existing items of which Staff should be aware? C8. Does the site contain irrigation water rights? ❑ Yes Q No If yes: 0 Yes ❑ No If yes, which company/district: Fort Hall Irrigation CHUBBUCK 1 0 290 E. Linden Avenue Chubbuck,ID 83202 208.237.2430 — Fax 208.237.2409 www.CityofChubbuck.us PRELIMINARY PLAT APPLICATION Aug. 2021 Form PAGE 2 OF 5 SECTION D - PROPOSED DEVELOPMENT INFORMATION D1. Plat Name D2. Number of Lots The Academy Campus 5 D3. Type of Land Uses within development (residential, commercial, industrial, etc.) D4. Water & Sewer Needs Educational City Services D5. Are there any issues related to the development of which Staff should be aware prior to meeting? ❑ Yes ❑■ No If yes: Will the development contain any commonly -owned and/or maintained improvements (stormwater facilities, community mailboxes, streets, D6. parks/playgrounds, etc.)? ❑ Yes ❑■ No If yes, what? Will the development contain any land within a designated floodplain (FEMA or Chubbuck? ❑ Yes ❑■ No If yes, what zone?: D7. If yes, how do you intend to minimize flood damage to structures, and public utilities and facilities such as sewer, gas, water, and electrical systems?? If yes and the proposal contains more than 50 lots or more than 5 acres, whichever is lesser, and there no base flood elevations established for the floodplain, you must submit base flood elevation data with the application package. Only for plat containing residential units: The City has adopted Parks Impact Fees with requirements that parks impact fees are due when building permits for residential units are issued. There may be times when the developer proposes to dedicate land and/or construct park improvements to satisfy the parks impact fee funding obligation in whole or in part. Which is anticipated with this development? D6. ❑ No public arks/park land are proposed with this phase, or any public parks/park land will benefit only this development, parks impact fees will be collected ❑ Public parks/park land are proposed that will benefit more than just this development, parks impact fees may be adjusted only by agreement between the city and the developer prior to construction, fund, or contribution based on the present value of system improvements and land in accordance with Chapter 17.28 of municipal code. SECTION E - ADDITIONAL SUBMITTAL REQUIREMENTS E1. Preliminary Plat Application Fees: Total # of lots 5 X $5.00 + $203.00 base fee = $ 228.00 total due E2. Master Plan, for any preliminary plat that is a portion of a large parcel, part of a larger group of commonly held parcels, or part of a larger development which has been, or shall be developed by the developer, shall be accompanied by a master plan submitted during the preliminary platting process. A master plan must be submitted with each preliminary plat filed. E3. Preliminary codes, covenants, and restrictions (CC&Rs) addressing maintenance of commonly owned improvements and/or land, if the development will contain any commonly owned improvements and/or land. For purposes of this requirement, commonly owned improvements include stormwater facilities, cluster mailboxes, private open space/parks/amenities, etc. E4. Narrative indicating how the approval criteria for preliminary plats are addressed. Approval criteria are as follows (17.12.100): 1. The subdivision proposal complies with applicable provisions of this title. 2. The subdivision proposal complies in principle with all applicable city design standards and development regulations. CHUBBUCK 1 0 290 E. Linden Avenue Chubbuck,ID 83202 208.237.2430 — Fax 208.237.2409 www.CityofChubbuck.us PRELIMINARY PLAT APPLICATION Aug. 2021 Form PAGE 3 OF 5 3. The subdivision proposal complies with all applicable zoning requirements of the underlying zoning district, applicable overlays, and other applicable development standards. 4. All public facilities including streets, sidewalks, curbs, gutters, secondary pressurized irrigation, water, sewer, fire protection, and sanitation services can be provided to the newly created lots and accommodate future extension to adjacent land. The use of a "control strip" intended to control or prevent the future extension of public facilities or development of adjacent land is prohibited. 5. If city public works determines that the proposed subdivision will result in significant traffic impacts then a "traffic impact study" will be required as part of the commission's review. A significant traffic impact is generally defined as occurring when: a. A proposed development or redevelopment of a site will generate 100 or more new peak hour trips; or b. The added volume is equal to 1,000 vehicles per day. 6. The proposal provides for a continuation of a connected transportation system unless topography or natural features prevents a connection to abutting streets or property. 7. The proposed subdivision provides for bicycle and pedestrian transportation routes and amenities in accordance with Bannock Transportation Planning Organization's adopted bicycle and pedestrian plans. 8. Public utilities are provided to the newly created lots in public rights of way or in appropriately sized easements. E5. If the development contains area with any FEMA or City of Chubbuck designated floodplains, the following must be submitted: 1. If the development, either within a single phase or as part of a larger planned development, contains more than 50 lots or 5 acres, whichever is less, base flood elevations shall be determined prior to filing an application for a preliminary plat and said determinations must be submitted with the application package. 2. If the development, either within a single phase or as part of a larger planned development, contains more than 50 lots or 5 acres, whichever is less, evidence must be submitted demonstrating that a CLOW application has been filed with FEMA. E6. Because every application is different, rules and regulations may differ and staff may require additional information or submittals before an application can be deemed complete and ready for the review process beyond staff level. 290 E. Linden Avenue lao�t-\ Chubbuck,ID 83202 — Fax 208.237.2 CHUBBUCK 208.www.Cit www.CityofChubbuck.us 409 10AH0 PRELIMINARY PLAT APPLICATION Aug. 2021 Form PAGE 4 OF 5 E7. PDF Drawings drawn according to municipal code containing the following: Code Reference Staff Reviewers Initials Preparer's Initials Description 17.12.150 —17.12.160 Presentation & Descriptive Data X • Drawing Size (11"x22" minimum through 22"x34" maximum) X • Proposed Name X . Location of Development by Section, Township, Range X • Reference to Section or Quarter Corner (dist. & Bear.) x • Name, Address, Phone Number of Developer x • Name, Address, Phone Number of Engineer/Surveyor x • North Arrow X • Date of Preparation (Including Revisions) X • Vicinity Map 17.12.170 Existing Conditions X • Existing Contours @ adequate Interval X • Existing Features x • Existing Utilities x • Existing R -O -W, easements, public areas, corporation lines X • Instrument # for parcels with common boundaries X • Existing & proposed zoning X . Total acreage x • Boundary dimensions 17.12.180 Proposed Conditions x • Street layout (including width) x • Street names x • Connections to existing streets X • Lot dimensions X . Lot numbers X . Total number of lots x • Location, width, and use of easements x . Designation of land for public use (parks and open space) 17.12.190 Proposed Utility Methods x • Proposed sewage disposal X • Proposed water supply X • Proposed storm water disposal X • Proposed secondary pressurized irrigation (if the site has irrigation rights) 15.54 (adopted 6/3/20) Floodplain requirements (N/A if there is no floodplain in the development) X 0 Floodplain boundaries, type, and BFEs 290 E. Linden Avenue PRELIMINARY PLAT Chubbuck,ID 83202 CHUBBUCK 208.237.2430 — Fax 208.237.2409 APPLICATION www.CityofChubbuck.us Aug. 2021 Form loneo PAGE 5OF5 SECTION F- CERTIFICATION • I, the undersigned, hereby certify that the information herein and attached hereto is true and correct to the best of my knowledge. • 1 agree to comply with all provisions of ordinances and laws governing this type of work, whether specified herein or not. • 1 am aware that if this application is not complete, the preliminary plat review process will not continue until it is so deemed by the City upon further submission of materials. • 1 hereby authorize the filing of this application and grant approval of on-site review of the development described herein. • 1 certify that I am authorized to file this application. F1. Signature F2. Printed Name F3. Date . Stewart Ward 4-12-2022 SECTION G -FOR STAFF USE ONLY G1. COMPLETENESS REVIEW: Deemed complete? Reviewed by: Date: ❑ Yes ❑ No If no, list concern(s): Applicant Notified? ❑ Yes ❑ No Comments: Northwest Corner Section 9 Found Brass Cap in Vault per CP&F #20520360 44 8 9 Preliminary Plat For THE ACADEMY CAMPUS A REPLAT OF THE ACADEMY SUBDIVISION LOCATED IN NW 7/4 SECTION 9, TOWNSHIP 6 SOUTH, RANGE 34 EAST, OF THE BOISE MERIDIAN IN THE COUNTY OF BANNOCK. Transformer Irrigation Box/Riser ❑E Electrical Box © Communication Box ® Storm Water Drain Sewer Man Hole j® Water Valve Small Tree Concrete Gravel Building SEICAA Deed #22004506 A=47.61' — — — — � R=30.00'115 1 4" N 3 15 ublic Utility Easement o B=S 44°48'01 I I \ • \ \ \ \ CkfI 1o'x1o' Idaho Pow . A=233.48' C=42.77' N 3 / Transformer Easem nt R=467.00' \ `+ *14b \ \ \ \ \ \ ® ® A=28°38'42" \ \ + w \ \ B—N 75°25'01 W o I C-231.05' • ,11111 x I 0 LO O to Lot 3 \ \ • �+F/ `�` \ \ C4 N 0.55 Acres LEGEND — — Parcel Boundary Lot Lines p Adjoining Parcels — — — — — — — — — — Proposed Easements NOTES Existing Easements Section Line UGP UGP UGP Underground Power G c c c Communication 1. Current parcel zoning is City of Chubbuck Agricultural (AG) and Limited w w w w Water Line — — — — — — — \ x x x X Fence Lines ❑ Found 5/8" Rebar with Residential (R-2) O N Plastic Cap PLS 15295 Z�l Found 1/2" Rebar with Plastic Cap PLS 12224 A Found ITD Brass Cap I N Found 1/2" Rebar No Cap 2. Proposed Zoning is City of Chubbuck Limited Residential (R2) \ ` 49', I� �IIN 3. Parcel contains ±17.38 acres and 5 Lots 115 �� 242.49' 5 N 1 � \ SEICAA 4. No solid waste dump, sump or sanitary landfill visible on site \ Deed #22004506 -I 5. This property is not included in any flood zone II \ \ \ \ ( 6. Lot 3 Block 2 will be dedicated to City of Chubbuck for additional a I I Right—of—Way of Alpine Ave. \ N 2 \ \ 2°�s, �� S 89°4422" E 7. All public utilities will be extended from existing facilities. p g I o II \ .19 o N \ 4 43 8. Fort Hall Irrigation Project has a 70—foot wide (35—foot half width) Block i 43' right—of—way for Redman Canal. No modifications or encroachment within N N the limits of the United States right—of—way for Redman Canal will be 3 L _ 3: See Notes ` allowed without prior written approval by the Bureau of Indian Affairs. & r7l _ #11 and #12 ` \ 9. The Redman Canal right—of—way will also serve as a dedicated easement to II The Academy, Inc. the City of Chubbuck for access and recreation conditional upon written _ Deed #21901587 0 0;Mo approval from the Bureau of Indian Affairs. \�� I Lot 1 Z �� 10. No direct vehicular access will be allowed onto Philbin Road for Lot 1 L) I Lot 2 ;� Block 1 and Lot 1 Block 2. 0 I o I 1.67 Acres 2.05 Acres -00 cn 11. Lot 1 and Lot 2 Block 1 will share a common access location onto Alpine I Lot 3 The Academy, Inc. I Ave. at a location that complies with "Access Management o I Acres Deed #21902772 I w Guidelines—Bannock Transportation Planning Organization" 10.01 L 436.53 S.F. N II 12. Surface stormwater will be collected into a storm conveyance system N 45°15'08" W N 00°39'26" W 0consisting of inlets and piping, to convey the storm water to a storm o I O 42.12' 15' Public Utility Easement 66.00' 0 swale/pond located at the south of the property. ---------- 200.51 N 89°44'34" W 420.18' --- A=249.98' R=500.00' \ \ \ o N 89'44'34" W 230.03' — — — — — — — — — A=28°38'42" \ \ \ B=S 75°25'01 " E \ 35.00 \ 3 w- — w — w w w w — w w �� w w w w W w@--O'Itq—ofw C-I-rr_tk�b tYt'% w-- w w A/pine Avenue =— C=247.38' w \ f 1 1 \\\ w I Deed #21500997 w w ,� SS SS SS SS SS :'i SS SS SS �» ��_ ` \ \ C �•� � lk \� Group 5 LLC \\ R \ \ �Oqj� :.:,.. N 89°44'36" w 50.31' X X�� i�# Deed #22103203 \ _ 1 o o —.� ♦ ,\w \ 33�6L \ ate, Transformer Irrigation Box/Riser ❑E Electrical Box © Communication Box ® Storm Water Drain Sewer Man Hole j® Water Valve Small Tree Concrete Gravel Building SEICAA Deed #22004506 A=47.61' — — — — � R=30.00'115 1 4" N 3 15 ublic Utility Easement o B=S 44°48'01 I I \ • \ \ \ \ CkfI 1o'x1o' Idaho Pow . A=233.48' C=42.77' N 3 / Transformer Easem nt R=467.00' \ `+ *14b \ \ \ \ \ \ ® ® A=28°38'42" \ \ + w \ \ B—N 75°25'01 W o I C-231.05' • ,11111 x I 0 LO O to Lot 3 \ \ • �+F/ `�` \ \ C4 N 0.55 Acres LEGEND — — Parcel Boundary Lot Lines p Adjoining Parcels — — — — — — — — — — Proposed Easements Existing Easements Section Line UGP UGP UGP Underground Power G c c c Communication IRR IRR IRR Irrigation w w w w Water Line — — — — — — — Simplot Pipeline x x x X Fence Lines ❑ Found 5/8" Rebar with Aluminum Cap PLS 2341 O Found 5/8" Rebar with Plastic Cap PLS 15295 Z�l Found 1/2" Rebar with Plastic Cap PLS 12224 A Found ITD Brass Cap Right—of—Way Monument Found 1/2" Rebar No Cap X Calculated Point Oi ® 01OCK Z 15' Public Utility Easement01) IP Vicinity Map IICli I Connor Academy \ �''F �•F W Cd a m 0 O \ NPL AND Q I LLI The Academy Inc. Deed #21902772 Q o p rn S TF \ p OF mC171 I ® Lot 2 ART U_ Lot CD W I 5.51 Acres \ I \ � z \ 00 I 7.60 Acres 3 W a- 0 SURVEYORS CERTIFICATE IZ The Academy, Inc. Q o Warranty Deed #2150997 I, Stewart K. Ward, a Registered Professional Land Surveyor Z w in the state of Idaho do hereby certify that this plat is an Q N I accurate representation of this survey completed under my I a _ 15' Public Utilit :.;-tase en ^'� supervision. O :..:. O' CO I S u ry rs y Owners e o o 0 I ^� I ; x °� The Academy, Inc. Dioptra LLC. 1295 Alpine Ave 4880 Clover Dell Ln x Chubbuck, Idaho 83202 Chubbuck, Idaho 83202 I (L O J. _ 25.0' 25.0' I 14 Simplot Underground Slurry Pipeline xlnstr. #90010868 14 I — O — Simplot Underground Slurry Pipeline Instr. #90010868 Center Corner Section 9 96 00' --------------- - -- - - ----- ----- 9 --------------- --------- ----------------- -- -- -- -- -- -- -- -- -- - - -- -- -- -- -- 8 pa 640.36 x �`'�' — _�--�� rt—x�--�--- X X�� X �_ Found /$ Rebar w Aluminum Cap G� P.O.B. 525.66' 1410.73' Marked Alpine Eng. 2652 1-86 State of Idaho N 89°44'22" W 2636.82' /-86 State of Idaho per CP&F #20520367 Deed #424016 z z Deed #424016 West 1/4 Corner Section 9 w � � w Found Aluminum Cap U) 33' R�W 33' R�W M in vault D 1 O P T R A per CP&F #20520366 15 EASE. 15 EASE. BASIS OF BEARING 9, 24' 24' 9, Basis of bearing per Idaho State Plane Coordinate System — East Zone. GPS observation combination factor: 1.0002579939. The Academy. b 4' Sidewalk by Owner Drainage Swale 3.5:1 Slopes R�dm Qn Canal p Project Area 1-86 Oi ® 01OCK Z 15' Public Utility Easement01) IP Vicinity Map IICli I Connor Academy \ �''F �•F W Cd a m 0 O \ NPL AND Q I LLI The Academy Inc. Deed #21902772 Q o p rn S TF \ p OF mC171 I ® Lot 2 ART U_ Lot CD W I 5.51 Acres \ I \ � z \ 00 I 7.60 Acres 3 W a- 0 SURVEYORS CERTIFICATE IZ The Academy, Inc. Q o Warranty Deed #2150997 I, Stewart K. Ward, a Registered Professional Land Surveyor Z w in the state of Idaho do hereby certify that this plat is an Q N I accurate representation of this survey completed under my I a _ 15' Public Utilit :.;-tase en ^'� supervision. O :..:. O' CO I S u ry rs y Owners e o o 0 I ^� I ; x °� The Academy, Inc. Dioptra LLC. 1295 Alpine Ave 4880 Clover Dell Ln x Chubbuck, Idaho 83202 Chubbuck, Idaho 83202 I (L O J. _ 25.0' 25.0' I 14 Simplot Underground Slurry Pipeline xlnstr. #90010868 14 I — O — Simplot Underground Slurry Pipeline Instr. #90010868 Center Corner Section 9 96 00' --------------- - -- - - ----- ----- 9 --------------- --------- ----------------- -- -- -- -- -- -- -- -- -- - - -- -- -- -- -- 8 pa 640.36 x �`'�' — _�--�� rt—x�--�--- X X�� X �_ Found /$ Rebar w Aluminum Cap G� P.O.B. 525.66' 1410.73' Marked Alpine Eng. 2652 1-86 State of Idaho N 89°44'22" W 2636.82' /-86 State of Idaho per CP&F #20520367 Deed #424016 z z Deed #424016 West 1/4 Corner Section 9 w � � w Found Aluminum Cap U) 33' R�W 33' R�W M in vault D 1 O P T R A per CP&F #20520366 15 EASE. 15 EASE. BASIS OF BEARING 9, 24' 24' 9, Basis of bearing per Idaho State Plane Coordinate System — East Zone. GPS observation combination factor: 1.0002579939. The Academy. b 4' Sidewalk by Owner Drainage Swale 3.5:1 Slopes r1D 10 P TR A The Academy Campus Preliminary Plat Narrative Prepared by Dioptra, Stewart K. Ward, PLS The Academy Inc (Connor Academy) is requesting approval of a Preliminary Plat for expansion of the campus located at 1295 Alpine Ave. The Academy has purchased parcels adjoining the existing school for future expansion. The parcels are zoned Limited Residential (R-2). All lots within this development will access directly from Alpine Ave. The Academy Campus is a development consisting of five (5) lots; four (4) buildable lots, and one (1) for street right-of-way for Alpine Ave. It is proposed that Alpine Ave right-of-way dedication be 33 -feet of additional right-of-way for a total right-of-way width of 66 -feet with roadway improvements and road widening constructed as part of this development. The curb/gutter and sidewalk design will be similar in design to the existing constructed portion of Alpine Ave in front of the school. Sanitary sewer lines and water lines will be extended from the existing facilities and carried to the east line of Lot 2 Block2 of this development. The lines will be installed within Alpine Ave right-of-way. All other public utilities will be extended from the existing facilities located along Alpine Ave. It is our understanding that the developer of the residential development to the east will be designing the water and sewer extensions along Alpine. Ave. Storm water will be retained in roadside swales and stormwater ponds, as needed. All storm water within the development will be retained in retention basins on site. 4880 Clover Dell 208-237-7373 Chubbuck, Idaho 83202 Exhibit 5a: Comprehensive Plan Future Land Use Map The Academy Campus Future—Desi gnation Commercial 0 Employment 0 High Density Low Densib., W Medium Density. Mixed Use CHUBBUCKH 0 1 0 290 E. Linden Avenue, Chubbuck, ID 83202 208.237.2430 — Fax 208.237.2409 www.CityofChubbuck.us Exhibit 5b: Current Zoning The Academy Campus CHUBBUCK 1 0 Landuse_Lategor,, MAgriculture (A) M Creative Community M Dense Residential (R-4) General Commercial (C-2) Industrial (1) Limited Commercial (C-1) Limited Residential (R-2) Limited Residential - P (R -2P) Planned Unit Development (PUD) Single Family Residential (R-1) 290 E. Linden Avenue, Chubbuck, ID 83202 208.237.2430 — Fax 208.237.2409 www.CityofChubbuck.us 1944'C -I\ CHUBBUCK IDRHO Exhibit 6: Evidence of Notice a. Site Posting b. Agency notices on file with staff a. Site Posting Sign posted April 13, 2022 End of pavement on Alpine Avenue 1295 Alpine Avenue 290 E. Linden Avenue, Chubbuck, ID 83202 208.237.2430 — Fax 208.237.2409 www.CityofChubbuck.us The Academy Traffic Impact Study �i i �a 0J 1 � FO�00H 0 STING BUIL6ING RELOCATED FIELD 360' X 155' \ lr) //� t i .. .. KITCHEN C EXPANSION HEW CO �� —, 00 r WETLANDS PLAYSPACEI FUTURE BUILD _\ NEW MIDDLE SCHOOL 00.1 - -/! ;r. asp � / Chubbuck, Idaho November 24, 2021 UT21-2040 20415 11/24/2021 v i qTF OF SOP ? \VA D. 1220 North 500 West, Ste. 202 Lehi, UT 84043 p 801.766.4343 www.halesengineering.com EXECUTIVE SUMMARY Chubbuck - The Academy Traffic Impact Study This study addresses the traffic impacts associated with the proposed "The Academy" development located in Chubbuck, Idaho. The Academy development is located on the east side of Philbin Road, just north of Interstate -86. The purpose of this traffic impact study is to analyze traffic operations at key intersections for existing (2021) and future (2026) conditions with and without the proposed project and to recommend mitigation measures as needed. The morning peak hour level of service (LOS) results are shown in Table ES -1. Recommended storage lengths are shown in Table ES -2. Table ES -1: Morning Peak Hour Level of Service Results BG BG MIT PP BG PP 0 Philbin Road ! Chubbock Road A A A A A © Alpine Avenue (School Access) / Philbin Road f e f b f Table ES -2: Recommended Storage Length LT RT LT RT LT RT LT RT E P E P E P E P E P E P E P E P 0 Philbin Road / Chubbock Road 50 - 75 - © Alpine Avenue (School Access) / Philbin Road - - 125 - 325 The Academy Traffic Impact Study SUMMARY OF KEY FINDINGS & RECOMMENDATIONS The development will consist of an extension of the current Connor Academy Public Charter School with the addition of a separate 6th -8th grade building. At full enrollment capacity, the project is anticipated to generate approximately 207 additional trips in the morning peak hour and 201 additional trips in the afternoon peak hour. It is anticipated that approximately 1,265 linear feet of queue storage is needed to accommodate the middle school pick-up/drop-off lane. Assumptions ' Alpine Avenue wide enough to fit right- • and left -turn lanes 225 students added to enrollment -------------------------------------------------------------------------------------------------------------- • Poor LOS at Alpine Avenue / Philbin Poor LOS at Alpine Avenue / Philbin Road Findings Road intersection intersection - ------------------------------------------- • Alpine Avenue / Philbin Road: Mitigations •None o Install southbound left -turn lane • Philbin Road: Assumptions o Widen to three -lane cross section Full student enrollment capacity with center two-way left -turn lane -------------------------------------------------------------------------------------------------------------- • Poor LOS at Alpine Avenue / Philbin Road Findings • Acceptable LOS intersection • Peak hour signal warrants not met at either study intersection ------------------------------------------------------------------------------------------------------------ Mitigations • None ; • None TABLE OF CONTENTS Chubbuck - The Academy Traffic Impact Study EXECUTIVE SUMMARY................................................................................................................................................i SUMMARY OF KEY FINDINGS & RECOMMENDATIONS........................................................................................... ii TABLE OF CONTENTS...............................................................................................................................................iii LISTOF TABLES.........................................................................................................................................................iv LISTOF FIGURES.......................................................................................................................................................iv I. INTRODUCTION...................................................................................................................................................1 A. Purpose.................................................................................................................................................................1 B. Scope....................................................................................................................................................................2 C. Analysis Methodology...........................................................................................................................................2 D. Level of Service Standards....................................................................................................................................2 II. EXISTING (2021) BACKGROUND CONDITIONS...............................................................................................4 A. Purpose.................................................................................................................................................................4 B. Roadway System..................................................................................................................................................4 C. Crash Data............................................................................................................................................................4 D. Traffic Volumes.....................................................................................................................................................4 E. Level of Service Analysis.......................................................................................................................................5 F. Queuing Analysis..................................................................................................................................................7 G. Mitigation Measures..............................................................................................................................................7 III. PROJECT CONDITIONS....................................................................................................................................10 A. Purpose...............................................................................................................................................................10 B. Project Description..............................................................................................................................................10 C. Trip Generation...................................................................................................................................................10 D. Trip Distribution and Assignment.........................................................................................................................11 E. Access.................................................................................................................................................................11 F. On -Site Queuing Analysis...................................................................................................................................14 IV. EXISTING (2021) PLUS PROJECT CONDITIONS............................................................................................15 A. Purpose...............................................................................................................................................................15 B. Traffic Volumes...................................................................................................................................................15 C. Level of Service Analysis.....................................................................................................................................15 D. Queuing Analysis................................................................................................................................................15 E. Mitigation Measures............................................................................................................................................15 V. FUTURE (2026) BACKGROUND CONDITIONS................................................................................................18 A. Purpose...............................................................................................................................................................18 B. Roadway Network...............................................................................................................................................18 C. Traffic Volumes...................................................................................................................................................18 D. Level of Service Analysis.....................................................................................................................................18 E. Queuing Analysis................................................................................................................................................18 F. Mitigation Measures............................................................................................................................................18 VI. FUTURE (2026) PLUS PROJECT CONDITIONS..............................................................................................21 A. Purpose...............................................................................................................................................................21 B. Traffic Volumes...................................................................................................................................................21 C. Level of Service Analysis.....................................................................................................................................21 D. Queuing Analysis................................................................................................................................................21 E. Mitigation Measures............................................................................................................................................21 F. Recommended Storage Lengths.........................................................................................................................23 Appendix A: Turning Movement Counts Appendix B: LOS Results Appendix C: Project Site Plan Appendix D: Queuing Results LIST OF TABLES Table 1: Level of Service Description.......................................................... Table 2: Study Intersection Crash Data ....................................................... Table 3: Existing (2021) Background Morning Peak Hour LOS .................. Table 4: Existing (2021) Background Morning Peak Hour LOS (Mitigated) Table 5: Student Enrollment by Analysis Year ............................................ Table6: Trip Generation.............................................................................. Table 7: Trip Distribution.............................................................................. Table 8: Existing (2021) Plus Project Morning Peak Hour LOS .................. Table 9: Future (2026) Background Morning Peak Hour LOS .................... Table 10: Future (2026) Plus Project Morning Peak Hour LOS .................. Table 11: Recommended Storage Lengths ................................................. LIST OF FIGURES Chubbuck - The Academy Figure 1: Vicinity map showing the project location in Chubbuck, Idaho .................... Figure 2: Existing (2021) background morning peak hour traffic volumes .................. Figure 3: Existing (2021) background morning peak hour traffic volumes (Mitigated) Figure 4: Trip assignment for the morning peak hour (2021) ...................................... Figure 5: Trip assignment for the morning peak hour (2026) ...................................... Figure 6: Existing (2021) plus project morning peak hour traffic volumes .................. Figure 7: Future (2026) background morning peak hour traffic volumes .................... Figure 8: Future (2026) plus project morning peak hour traffic volumes .................... Traffic Impact Study ..3 ..4 ..5 ..9 10 11 11 17 20 23 23 ..1 ..6 ..8 12 13 16 19 22 iv INTRODUCTION A. Purpose Chubbuck - The Academy Traffic Impact Study This study addresses the traffic impacts associated with the proposed The Academy development located in Chubbuck, Idaho. The proposed project is located on the east side of Philbin Road, just north of Interstate -86. Figure 1 shows a vicinity map of the proposed development. The purpose of this traffic impact study is to analyze traffic operations at key intersections for existing (2021) and future (2026) conditions with and without the proposed project and to recommend mitigation measures as needed. Figure 1: Vicinity map showing the project location in Chubbuck, Idaho B. Scope Chubbuck - The Academy Traffic Impact Study The study area was defined based on conversations with the development team. This study was scoped to evaluate the traffic operational performance impacts of the project on the following intersections: • Philbin Road / Chubbock Road • Alpine Avenue (School Access) / Philbin Road C. Analysis Methodology Level of service (LOS) is a term that describes the operating performance of an intersection or roadway. LOS is measured quantitatively and reported on a scale from A to F, with A representing the best performance and F the worst. Table 1 provides a brief description of each LOS letter designation and an accompanying average delay per vehicle for both signalized and unsignalized intersections. The Highway Capacity Manual (HCM), 6th Edition, 2016 methodology was used in this study to remain consistent with "state -of -the -practice" professional standards. This methodology has different quantitative evaluations for signalized and unsignalized intersections. For signalized, roundabout, and all -way stop -controlled (AWSC) intersections, the LOS is provided for the overall intersection (weighted average of all approach delays). For all other unsignalized intersections, LOS is reported based on the worst movement. Using Synchro/SimTraffic software, which follow the HCM methodology, the peak hour LOS was computed for each study intersection. Multiple runs of SimTraffic were used to provide a statistical evaluation of the interaction between the intersections. The detailed LOS reports are provided in Appendix B. Hales Engineering also calculated the 95th percentile queue lengths for the study intersections using SimTraffic. The detailed queue length reports are provided in Appendix D. D. Level of Service Standards For the purposes of this study, a minimum acceptable intersection performance for each of the study intersections was set at LOS D. If levels of service E or F conditions exist, an explanation and/or mitigation measures will be presented. These standards are provided by the 2040 Bannock Transportation Planning Organization (BTPO) Metropolitan Transportation Plan (2019) and are consistent with national HCM standards. 2 Table 1: Level of Service Description Free Flow / Insignificant Delay Stable Operations / Minimum Delays Stable Operations / Acceptable Delays Approaching Chubbuck - The Academy Traffic Impact Study <_ 10 i<_ 10 > 10 to 20 i > 10 to 15 > 20 to 35 1 > 15 to 25 Unstable Flows / > 35 to 55 > 25 to 35 Tolerable Delays ----------------------------------------------------------------------------------------------------------------------------------------------------- ------------------------- Unstable Operations > 55 to 80 > 35 to 50 Significant Delays Forced Flows / Unpredictable Flows > 80 > 50 / Excessive Delays 3 Chubbuck - The Academy II. EXISTING (2021) BACKGROUND CONDITIONS A. Purpose Traffic Impact Study The purpose of the background analysis is to study the intersections and roadways during the peak travel periods of the day with background traffic and geometric conditions. Through this analysis, background traffic operational deficiencies can be identified, and potential mitigation measures recommended. This analysis provides a baseline condition that may be compared to the build conditions to identify the impacts of the development. B. Roadway System The primary roadways that will provide access to the project site are described below: Philbin Road — is a city -maintained roadway which is classified by the 2040 BTPO Metropolitan Transportation Plan (2019) as a "minor arterial." The roadway has one travel lane in each direction. The posted speed limit is 35 mph in the study area. C. Crash Data A three-year crash report (2018-2020) was provided for each of the study intersections. Crash data were collected from the Local Highway Technical Assistance Council's website. Crashes were broken down by severity and are shown in Table 2. As shown, a total of 3 minor crashes have occurred at the study intersections. No safety mitigations are recommended. Table 2: Study Intersection Crash Data Description Philbin Road / Chubbock Road 0 0 0 0 1 Alpine Avenue (School Access) / Philbin Road j 0 0 0 0 2 D. Traffic Volumes Weekday morning (7:00 to 9:00 a.m.) and afternoon (2:00 to 4:00 p.m.) peak period traffic counts were performed at the following intersections: • Philbin Road / Chubbock Road • Alpine Avenue (School Access) / Philbin Road 4 Chubbuck - The Academy Traffic Impact Study The counts were performed on Wednesday, October 20, 2021. Due to a morning peak hour crash in the vicinity, additional morning counts were performed on Wednesday October 27, 2021. The morning peak hour was determined to be between 7:30 and 8:30 a.m., and the afternoon peak hour was determined to be between 2:30 and 3:30 p.m. The morning peak hour volumes were approximately 45% higher than the afternoon peak hour volumes. Therefore, the morning peak hour volumes were used in the analysis to represent the worst-case conditions. Detailed count data are included in Appendix A. Hales Engineering evaluated the need to adjust due to seasonal changes in traffic volumes. Monthly traffic volume data were obtained from a nearby automatic traffic recorder (ATR) on Chubbock Road (ATR #249). In recent years, traffic volumes in October have been equal to approximately 101% of average traffic volumes. Therefore, no adjustment was made to the observed traffic volumes at the study intersections to remain conservative. The traffic counts were collected during the COVID-19 pandemic when traffic volumes may have been slightly reduced due to social distancing measures. According to ATR #249, traffic volumes in October 2019 (pre -social distancing) were lower than those in October 2021. Therefore, no adjustment was made for the COVID-19 pandemic. Figure 2 shows the existing morning peak hour volumes as well as intersection geometry at the study intersections. E. Level of Service Analysis Hales Engineering determined that the intersection of Alpine Avenue (School Access) / Philbin Road is currently operating at a poor level of service F during the morning peak hour, as shown in Table 3. Table 3: Existing (2021) Background Morning Peak Hour LOS Description � Philbin Road / Chubbock Road AWSC - 6.8 A Alpine Avenue (School Access) / Philbin Road j WB Stop j WBL >50 f 5 r� e � � 11 � -JW -'i ►49proair •- ' as .� � � �' _� Ivi! ■ 3� - F. Queuing Analysis Chubbuck - The Academy Traffic Impact Study Hales Engineering calculated the 95th percentile queue lengths for each of the study intersections. Significant 95th percentile queue lengths were observed at the Alpine Avenue (School Access) / Philbin Road intersection of approximately 150 feet on the southbound approach and 125 feet on the westbound approach during the morning peak hour. G. Mitigation Measures There are corridor and intersection improvements listed in the Metropolitan Transportation Plan for Philbin Road and the Philbin Road / Chubbock Road intersection before 2040. It is also stated that Philbin Road is planned to become a Major Arterial in the Master Street Map. With these improvements in mind, the City could consider widening Philbin Road at the Alpine Avenue intersection to incorporate a designated northbound right turn lane and southbound left - turn lane. However, since the poor LOS only occurs during short time periods around the start and release times of the school, improvements may be delayed until full roadway changes are implemented. Additionally, since traffic volumes on the major street exceed 420 vehicles per hour during the morning peak hour, a signal warrant analysis was completed for the Alpine Avenue / Philbin Road intersection. Peak hour signal warrants are listed in the Federal Highway Administration (FHWA) Manual on Uniform Traffic Control Devices (MUTCD). Since Alpine Avenue is wide enough to accommodate left- and right- turn storage, right turns were not included in the minor street volume. With only 48 observed morning peak hour left turns, this intersection does not meet peak hour warrants for a traffic signal. To improve safety, delays, and queuing, a mitigation measure was analyzed with a southbound left -turn lane at the Alpine Avenue / Philbin Road intersection. The roadway geometry is shown in Figure 3 with LOS results shown in Table 4. Westbound left -turn movements are still anticipated to operate at a poor level of service but southbound left -turn queues are anticipated to reduce to 75 feet and westbound left -turn queues are anticipated to reduce to 100 feet. These results serve as a baseline condition for the impact analysis of the proposed development during existing (2021) conditions. 7 Y Y i HALES ®ENGINEER ING innovative transportation solutions Intersection I Level of Service Description I Control 1 Movement' I Aver. Delay I LOSZ (Sec. / Veh.) 1. Movement indicated for unsignalized intersections where delay and LOS represents worst movement. SBL = Southbound left movement, etc. 2. Uppercase LOS used for signalized, roundabout, and AWSC intersections. Lowercase LOS used for all other unsignalized intersections. Source: Hales Engineering, November 2021 III. PROJECT CONDITIONS A. Purpose Chubbuck - The Academy Traffic Impact Study The project conditions discussion explains the type and intensity of development. This provides the basis for trip generation, distribution, and assignment of project trips to the surrounding study intersections defined in Chapter I. B. Project Description The Academy development is located on the east side of Philbin Road, just north of Interstate - 86. The development will consist of an extension to the existing school adding on a separate 6th - 8th grade building. At the opening of the new building, student enrollment is anticipated to increase by 225 students. By 2026, full capacity of 840 students is anticipated to be reached. A concept plan for the proposed development is provided in Appendix C. The anticipated number of students for each study year is shown in Table 5. Table 5: Student Enrollment by Analysis Year • 540 Students ---------------------------------------- 765 Students ---------------------------------------- 840 Students ---------------------------------------- C. Trip Generation Trip generation for the full student capacity of the development was calculated using current trip generation for the existing school enrollment. Hales Engineering calculated a morning peak hour trip generation rate of 0.69 trips per student and an afternoon peak hour trip generation rate of 0.67 trips per student. Trip generation for the proposed project is included in Table 6. The total trip generation for the development is as follows: • Morning Peak Hour Trips: 580 • Afternoon Peak Hour Trips: 563 The anticipated additional trip generation at the opening of the new building is as follows: • Morning Peak Hour Trips: 155 • Afternoon Peak Hour Trips: 151 The anticipated additional trip generation at full capacity is as follows: • Morning Peak Hour Trips: 207 • Afternoon Peak Hour Trips: 201 10 The Academy Traffic Impact Study Table 6: Trip Generation Trip Generation Total % In % Out In Out Total AM Peak Hour :Public Charter School (K-8) 840 : Students : 580 55% 45% : 319 261 580 319 261 : 580 :Public Charter School (K-8) 840 Students : 563 : 45% 55% 253 310 563 • 563 253 310 563 D. Trip Distribution and Assignment Project traffic is assigned to the roadway network based on the type of trip and the proximity of project access points to major streets, high population densities, and regional trip attractions. Existing travel patterns observed during data collection also provide helpful guidance to establishing these distribution percentages, especially near the site. The resulting distribution of project generated trips during the morning peak hour is shown in Table 7. Table 7: Trip Distribution 20% 45% 30% 5% These trip distribution assumptions were used to assign the morning peak hour generated traffic at the study intersections to create trip assignment for the proposed development. Trip assignment for the development in 2021 is shown in Figure 4 and 2026 is shown in Figure 5. E. Access The proposed access for the site will be gained at the following locations (see also concept plan in Appendix C): Aloine Avenue: The middle school access will be located approximately 1,125 feet east of the elementary school access and approximately 1,300 feet east of the Alpine Avenue / Philbin Road intersection. It will access the project on the south side of Alpine Avenue. It is anticipated that the access will be stop -controlled. 11 Y -. nils-_.� _. _ _ ... -• -- --'- - -- � -• Chubbuck - The Academy Traffic Impact Study F. On -Site Queuing Analysis There are two pick-up / drop-off zones along the school. One for the existing building (future elementary grades) and one for the new middle school building. The main entrance to the new middle school building is anticipated to have approximately 150 feet in front of the school for picking up and dropping off. The on-site circulation and queuing analyses were completed in VISSIM to closely represent the on-site out -loading conditions. Multiple runs were used to provide a statistical evaluation of the site circulation operations. This assumed an enrollment of 300 students and that all middle school students are dismissed at the same time. The afternoon peak hour was analyzed since it has been observed at many charter schools that picking up students takes longer than dropping them off. The 95th percentile maximum queue length during the afternoon peak hour was found to be approximately 1,265 linear feet. Based on this analysis, Hales Engineering recommends that queuing lanes with a total linear queue storage length of at least this amount be implemented into the property to ensure proper circulation and avoid backing into the roadways adjacent to the property. Existing plans indicate that there will be approximately 1,250 linear feet of storage along the back side of the property before backing into the existing queue storage for the existing building. One consideration to accommodate the anticipated queues is to construct a third input lane on the west end of the property specifically designated for middle school pick-up/drop-off. 14 Chubbuck - The Academy IV. EXISTING (2021) PLUS PROJECT CONDITIONS A. Purpose Traffic Impact Study The purpose of the existing (2021) plus project analysis is to study the intersections and roadways during the peak travel periods of the day for existing background traffic and geometric conditions plus the net trips generated by the proposed development. This scenario provides valuable insight into the potential impacts of the proposed project on background traffic conditions. B. Traffic Volumes Hales Engineering added the project trips discussed in Chapter III to the existing (2021) background traffic volumes to predict turning movement volumes for existing (2021) plus project conditions. Existing (2021) plus project morning peak hour turning movement volumes are shown in Figure 6. C. Level of Service Analysis Hales Engineering determined that the Alpine Avenue / Philbin Road intersection is anticipated to continue operating at a poor level of service during the morning peak hour with project traffic added, as shown in Table 8. D. Queuing Analysis Hales Engineering calculated the 95th percentile queue lengths for each of the study intersections. Significant queues of 250 feet are anticipated for the westbound left -turn movements during the morning peak hour. E. Mitigation Measures With only 79 westbound left -turn movements, the Alpine Avenue / Philbin Road intersection is still anticipated to not meet peak hour signal warrants. No other mitigation measures are recommended to improve operations at the intersection. 15 _■ }` � s � � ,,i� F , I w �i ti ��f ii - r Iraq • ra-,m .46 rlw i HALES ®ENGINEER ING innovative transportation solutions Intersection I Level of Service DescriptionI Control I Movement' I Aver. Delay I LOS2 (Sec. / Veh.) 1. Movement indicated for unsignalized intersections where delay and LOS represents worst movement. SBL = Southbound left movement, etc. 2. Uppercase LOS used for signalized, roundabout, and AWSC intersections. Lowercase LOS used for all other unsignalized intersections. Source: Hales Engineering, November 2021 Chubbuck - The Academy V. FUTURE (2026) BACKGROUND CONDITIONS A. Purpose Traffic Impact Study The purpose of the future (2026) background analysis is to study the intersections and roadways during the peak travel periods of the day for future background traffic and geometric conditions. Through this analysis, future background traffic operational deficiencies can be identified, and potential mitigation measures recommended. B. Roadway Network There are corridor and intersection improvements listed in the Pocatello/Chubbuck Urbanized Area Metropolitan Transportation Plan for Philbin Road and the Philbin Road / Chubbock Road intersection before 2040. It is also stated that Philbin Road is planned to become a Major Arterial in the Master Street Map with potential for it to become a five -lane road. Based on this information, it was assumed that at least a three -lane cross section on Philbin Road could be implemented to improve safety and turning movements in the study area. These changes were made to the roadway network for the future (2026) analysis. C. Traffic Volumes Hales Engineering calculated future (2026) forecasted volumes from a five-year historical AADT growth rate of 1.55% from ATR #249 on Chubbock Road. To be conservative, a 2% growth rate was used to forecast the future (2026) traffic volumes. Future (2026) morning peak hour turning movement volumes are shown in Figure 7. D. Level of Service Analysis Hales Engineering determined that both study intersections are anticipated to operate at acceptable levels of service during the morning peak hour in future (2026) background conditions, as shown in Table 9. These results serve as a baseline condition for the impact analysis of the proposed development for future (2026) conditions. E. Queuing Analysis Hales Engineering calculated the 95th percentile queue lengths for each of the study intersections. No significant queueing is anticipated during the morning peak hour. F. Mitigation Measures No mitigation measures are recommended. 18 ilk 15 W Chubbuck Road HALES C)ENGINEER ING innovative transportation solutions Intersection I Level of Service Description I Control I Movement' I Aver. Delay I LOS2 (Sec. / Veh.) 1. Movement indicated for unsignalized intersections where delay and LOS represents worst movement. SBL = Southbound left movement, etc. 2. Uppercase LOS used for signalized, roundabout, and AWSC intersections. Lowercase LOS used for all other unsignalized intersections. Source: Hales Engineerinq, November 2021 Chubbuck - The Academy Traffic Impact Study VI. FUTURE (2026) PLUS PROJECT CONDITIONS A. Purpose The purpose of the future (2026) plus project analysis is to study the intersections and roadways during the peak travel periods of the day for future background traffic and geometric conditions plus the net trips generated by the proposed development. This scenario provides valuable insight into the potential impacts of the proposed project on future background traffic conditions. B. Traffic Volumes Hales Engineering added the project trips discussed in Chapter III to the future (2026) background traffic volumes to predict turning movement volumes for future (2026) plus project conditions. Future (2026) plus project morning peak hour turning movement volumes are shown in Figure 8. C. Level of Service Analysis Hales Engineering determined that the Alpine Avenue / Philbin Road intersection is anticipated to return to operating at a poor level of service during the morning peak hour in future (2026) plus project conditions, as shown in Table 10. D. Queuing Analysis Hales Engineering calculated the 95th percentile queue lengths for each of the study intersections. Significant 95th percentile queue lengths of 325 feet are anticipated for the westbound left -turn movements at the Alpine Avenue / Philbin Road intersection during the morning peak hour. E. Mitigation Measures Queuing begins forming on the southbound left -turn lane, which blocks westbound left turns. These delays and queues are only anticipated for a short time as school is starting and letting out. This intersection is still not anticipated to meet peak hour signal warrants with only 92 westbound left turns. No further mitigation measures are recommended for this intersection. The Philbin Road / Chubbock Road intersection is anticipated to have more than 420 vehicles per hour on the major street during the morning peak hour. However, with 526 vehicles per hour on the major street and 299 vehicles per hour on the minor street, this intersection does not meet peak hour signal warrants. The all -way stop -control is anticipated to function effectively in Future (2026) Plus Project conditions. 21 1 Chubbuck - The Academy Traffic Impact Study Table 10: Future (2026) Plus Project Morning Peak Hour LOS Philbin Road / Chubbock Road Alpine Avenue (School Access) / Philbin Road Control Movement Aver. Delay LOS (Sec. / Veh.) •• 1 F. Recommended Storage Lengths Hales Engineering determined recommended storage lengths based on the 95th percentile queue lengths given in the future (2026) plus project scenario. These storage lengths do not include the taper length. Recommended storage lengths for the study intersections are shown in Table 11. Intersections shown in Table 11 include new intersections and existing intersections that have recommended storage length changes. Table 11: Recommended Storage Lengths LT RT LT RT LT RT LT RT E P E P E P E P E P E P E P E P 0 Philbin Road / Chubbock Road 50 75 - - © Alpine Avenue (School Access) / Philbin Road - - 125 - - - 325 23 Chubbuck - The Academy Traffic Impact Study APPENDIX A Turning Movement Counts TrafficCounts C 2364 North 1450 East Lehi, UT 84043 801.636.0891 Intersection Turning Movement Summary intersection: Philbin Road / Chubbuck Road Date: 10-27-21, Wed North/South: Philbin Road Day of Week Adjustment: 100.0% East/west: Chubbuck Road Month of Year Adjustment: 100.0% Jurisdiction: Chubbuck, Idaho Adjustment Station #: 0 Project Title: The Academy TIS Growth Rate: 0.0% Project No: UT21-2040 I Number of Years: 0 AM PEAK HOUR PERIOD: 7:30 AM -8:30 AM AM PEAK 15 MINUTE PERIOD: 7:45 AM -8:00 AM 0 0 y 0 0 AM PHF: 0.76 MIDDAY PEAK HOUR PERIOD: - 0 965 0 - MIDDAY PEAK 15 MINUTE PERIOD: - MIDDAY PHF: 0 0 0 0 0 0 9:15-9:30 iY 0 PM PEAK HOUR PERIOD: - PM PEAK 15 MINUTE PERIOD'- 0 375 90 13 0 0 PM PHF: AAAD /\ '44 '1'4 a 0 0 0 335 36 0 9:30-9:45 Chubbuck Read + 0 ~� 0 0 92 TOtel ERtB^�GIBS ISI "� Ir 182 �� 346 0 1� 37 0 0 0 9:45 - 10:00 0 0 0 Chubbuck Reed 0 /� T� 0 0 0 0 00 0 0 0 0 10:00-10:15 0 0 AM 0 0 465 112 0 i Midda i PM 0 K _ sn 0 0 0 0 0 0 10:15-10:30 RAW COUNT SUMMARIES 7:15 - 7:30 2 11 15 0 2 27 2 0 113 8 0 16 7 6 2 110 7:30 - 7:45 2 12 12 0 9 105 1 0 1 24 9 0 22 14 16 0 227 7:45 - 8:00 8 29 36 0 11 59 2 0 8 43 12 0 32 16 4 2 260 8:00 - 8:15 0 2 2 0 6 107 1 0 2 11 30 0 19 8 3 0 171 8:15 - 8:30 0 5 4 0 30 64 0 0 2 14 6 0 20 4 6 0 135 8:30 - 8:45 3 7 12 0 6 37 0 0 1 14 4 0 20 7 4 0 115 9:00-9:15 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 9:15-9:30 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 9:30-9:45 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 9:45 - 10:00 0 0 0 0 0 0 0 0 0 0 0 00 0 0 0 0 10:00-10:15 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 10:15-10:30 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 10:30 - 10:45 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 10:45 - 11:00 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 11:00-11:15 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 11:15-11:30 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 11:30 - 11:45 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 11:45 - 12:00 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 12:00-12:15 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 12:15-12:30 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 12:30 - 12:45 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 12:45 - 13:00 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 13:00-13:15 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 13:15-13:30 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 13:30 - 13:45 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 13:45 - 14:00 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 14:00-14:15 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 14:15-14:30 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 14:30 - 14:45 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 14:45 - 15:00 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 15:00-15:15 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 15:15-15:30 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 15:30 - 15:45 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 16:15-16:30 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 16:30 - 16:45 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 16:45 - 17:00 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 17:00-17:15 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 17:15-17:30 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 17:30 - 17:45 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 17:45 - 18:00 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TrafficCounts C 2364 North 1450 East Lehi, UT 84043 801.636.0891 Intersection Turning Movement Summary Intersection: Philbin Road / Chubbuck Road Date: 10-20-21, Wed North/South: Philbin Road Day of Week Adjustment: 100.0% East/west: Chubbuck Road Month of Year Adjustment: 100.0% Jurisdiction: Chubbuck, Idaho Adjustment Station #: 0 Project Title: The Academy TIS Growth Rate: 0.0% Project No: UT21-2040 I Number of Years: 0 AM PEAK HOUR PERIOD: 7:30 AM -8:30 AM AM PEAK 15 MINUTE PERIOD: 7:45 AM -8:00 AM AM PHF: 0.77 MIDDAY PEAK HOUR PERIOD: 2:30PM-3:30 PM MIDDAY PEAK 15 MINUTE PERIOD: 2:30 PM 2:45 PM MIDDAY PHF: 0.95 PM PEAK HOUR PERIOD: - PM PEAK 15 MINUTE PERIOD: - PM PHF: Chubbuck Roatl i 186 I 149 i d. `jjr ' 923 ' 161 a f(` a Di �j �► a 1 Total Enterinq VehiclesIL I07 35 1J2 IB _ 16 626 Ir 34 _ 26_ -_-_---_ 228 _2J5_T`• TJ _ 42 _ e + Chubbuck Roatl Q_ �__� 52 38 0 J �� Leuend 9J � AM � Midda ' PAR i A i i 15J K 0 PM _ 524 — 349 0 0 RAW COUNT SUMMARIES Philbin Road Philbin Roatl Chubbuck Road Northbound 4 Southbound u TEastbound Chubbuck Road u Westbound TOTAL 0 7:15 - 7:30 2 5 0 0 0 30 5 0 2 13 3 0 5 13 24 0 102 7:30 - 7:45 15 6 2 0 1104 2 0 7 11 0 0 13 16 30 1 207 7:45 - 8:00 17 27 1 0 1 140 13 0 0 9 0 0 9 6 22 0 245 8:00 - 8:15 9 1 1 0 1 89 6 0 3 11 0 0 6 7 36 0 170 8:15 - 8:30 11 4 3 0 0 60 6 0 6 11 0 0 6 6 19 0 132 8:30 - 8:45 11 7 2 0 1 19 6 0 5 22 0 0 6 8 12 0 99 9:00-9:15 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 9:15-9:30 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 9:30-9:45 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 9:45 - 10:00 0 0 0 0 0 0 0 0 0 0 0 00 0 0 0 0 10:00-10:15 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 10:15-10:30 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 10:30 - 10:45 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 10:45 - 11:00 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 11:00-11:15 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 11:15-11:30 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 11:30 - 11:45 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 11:45 - 12:00 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 12:00-12:15 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 12:15-12:30 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 12:30 - 12:45 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 12:45 - 13:00 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 13:00-13:15 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 13:15-13:30 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 13:30 - 13:45 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 13:45 - 14:00 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 14:00 - 14:15 17 18 9 0 3 35 4 0 4 7 0 0 8 16 17 0 138 14:15 - 14:30 22 30 1 0 1 33 7 0 3 22 2 0 6 17 30 0 134 14:30 - 14:45 17 4 2 0 0 47 7 0 7 21 3 0 4 23 31 0 166 14:45 - 15:00 41 20 0 0 1 51 2 0 0 15 0 0 6 21 8 0 165 15:00 - 15:15 31 11 3 0 0 32 3 0 2 23 0 0 7 21 24 0 157 15:15 - 15:30 18 5 5 0 2 31 30 0 9 14 2 0 9 7 28 0 140 15:30 - 15:45 12 14 1 0 1 37 2 0 7 14 1 0 11 30 17 0 147 16:15-16:30 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 16:30 - 16:45 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 16:45 - 17:00 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 17:00-17:15 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 17:15-17:30 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 17:30 - 17:45 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 17:45 - 18:00 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TrafficCounts C 2364 North 1450 East Lehi, UT 84043 801.636.0891 Intersection Turning Movement Summary Intersection: Philbin Road / Alpine Avenue & Dirt Road Access Date: 10-27-21, Wed North/South: Philbin Road Day of Week Adjustment: 100.0% East/West: Alpine Avenue & Dirt Road Access Month of Year Adjustment: 100.0% Jurisdiction: Chubbuck, Idaho Adjustment Station #: 0 Project Title: The Academy TIS Growth Rate: 0.0% Project No: UT21-2040 I Number of Years: 0 AM PEAK HOUR PERIOD: 7:30 AM -8:30 AM AM PEAK 15 MINUTE PERIOD: 7:45 AM -8:00 AM AM PHF: 0.72 MIDDAY PEAK HOUR PERIOD: 2:30 PM -3:30 PM MIDDAY PEAK 15 MINUTE PERIOD: 2:45 PM -3:00 PM MIDDAY PHF: 0.66 PM PEAK HOUR PERIOD: - i I 71 889 - 226 I I 350 d. 525 364 I a PM PEAK 15 MINUTE PERIOD: PM PHF: T a AA 1 o0f +)1 b oQo_ _= Alpine Avenue & Dirt Road Access TO Enterin Vehicles 122 _1a9_ �^ -�- 0__ o --I o ♦�� oI_ o zoz _i6a_�—� + ua"e Avenue & Dirt Roatl Access 0 =:-07 _� 0 2a2 sa I„u�, �d � 7:15 - 7:30 0 43 13 0 11 44 0 0 0 0 0 0 5 0 4 0 120 7:30 - 7:45 0 91 53 0 56 42 0 0 0 0 0 015 0 39 0 296 7:45 - 8:00 0 53 31 0 56 107 0 0 0 0 0 027 0 81 0 355 8:00 - 8:15 0 44 4 0 1 164 0 0 0 0 0 0 3 0 2 0 218 8:15 - 8:30 0 54 0 0 1 98 0 0 0 0 0 0 3 0 0 0 156 8:30 - 8:45 0 54 1 0 3 43 0 0 0 0 0 0 0 0 1 0 102 9:00-9:15 0 0 AM 459 330 I 193 I I 288 i 0 I Midda PM I K _ ]89 0 0 - 481 0 0 RAW COUNT Philbin Road PhilbinRoatl ine Avenue & Dirt Road Acc ine Avenue & Dirt Road Acc 0 0 SUMMARIES astbound ,_� Northbound 4 Southbound u TE u Westbound TOTAL 0 7:15 - 7:30 0 43 13 0 11 44 0 0 0 0 0 0 5 0 4 0 120 7:30 - 7:45 0 91 53 0 56 42 0 0 0 0 0 015 0 39 0 296 7:45 - 8:00 0 53 31 0 56 107 0 0 0 0 0 027 0 81 0 355 8:00 - 8:15 0 44 4 0 1 164 0 0 0 0 0 0 3 0 2 0 218 8:15 - 8:30 0 54 0 0 1 98 0 0 0 0 0 0 3 0 0 0 156 8:30 - 8:45 0 54 1 0 3 43 0 0 0 0 0 0 0 0 1 0 102 9:00-9:15 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 9:15-9:30 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 9:30-9:45 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 9:45 - 10:00 0 0 0 0 0 0 0 0 0 0 0 00 0 0 0 0 10:00-10:15 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 10:15-10:30 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 10:30 - 10:45 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 10:45 - 11:00 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 11:00-11:15 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 11:15-11:30 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 11:30 - 11:45 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 11:45 - 12:00 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 12:00-12:15 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 12:15-12:30 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 12:30 - 12:45 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 12:45 - 13:00 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 13:00-13:15 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 13:15-13:30 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 13:30 - 13:45 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 13:45 - 14:00 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 00 14:00 - 14:15 0 61 6 0 7 36 0 0 0 0 0 0 1 0 0 0 111 14:15 - 14:30 0 45 16 0 20 32 0 0 0 0 0 0 0 0 0 0 113 14:30 - 14:45 0 44 31 0 40 37 0 0 0 0 0 0 4 0 3 0 159 14:45 - 15:00 0 50 40 0 31 29 0 0 0 0 0 0 19 0 100 0 269 15:00 - 15:15 0 55 8 0 7 36 0 0 0 0 0 0 18 0 35 0 159 15:15 - 15:30 0 52 8 0 1 45 0 0 0 0 0 0 5 0 110 122 15:30 - 15:45 0 33 15 0 14 50 0 0 0 0 0 0 7 0 11 0 130 16:15-16:30 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 16:30 - 16:45 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 16:45 - 17:00 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 17:00-17:15 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 17:15-17:30 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 17:30 - 17:45 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 17:45 - 18:00 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Chubbuck - The Academy Traffic Impact Study APPENDIX B LOS Results Intersection: Philbin Road & W Chubbuck Road Type: All -way Stop Controlled Intersection: Philbin Road & Alpine Avenue Type: Unsiqnalized Demand D - Approach Movement Movement i wowlumqe��j 242 100 Volume L 10 IMyg • 1.1 A 9 90 7.3 A 242 T 300 307 102 2.1 A NB 0.7 A Subtotal 330 R 54 51 94 3.8 A L Subtotal 364 367 101 2.5 A SB L 36 37 103 9.3 A T 335 334 100 11.2 8 SB L 48 48 100 63.1 F WB R 4 4 94 1.7 A Subtotal 375 375 100 10.9 8 L 13 14 108 6.5 A Total T 92 91 99 8.8 A EB R 37 37 100 4.7 A Subtotal 142 142 100 7.5 A L 93 92 99 6.7 A T 42 41 98 8.7 A WB R 29 33 113 4.4 A Subtotal 164 166 101 1 6.7 A Total 1,045 1,050 101 1 6.8 A Intersection: Philbin Road & Alpine Avenue Type: Unsiqnalized EENffrfflfffflTWWd Delay/Veh (sec) Approach Movement i wowlumqe��j 242 100 • 1.1 A T 242 NB R 88 88 100 0.7 A Subtotal 330 330 100 1.0 A L 114 108 95 10.2 8 SB T 411 412 100 6.4 A Subtotal 525 520 99 7.2 A L 48 48 100 63.1 F WB R 122 126 103 5.5 A Subtotal 170 174 102 21.4 C Total 1,026 1,024 100 7.7 A Intersection: Philbin Road & W Chubbuck Road Type: All -way Stop Controlled Intersection: Philbin Road & Alpine Avenue Type: Unsiqnalized �- Delay/Veh (sec) Approach Movement i wowlumqe��j 242 100 L 10 • 1.1 A 9 90 7.4 A 242 300 307 102 2.1 A NBT 0.7 A Subtotal 330 R 54 51 94 3.8 A L Subtotal 364 367 101 2.5 A SB L 36 37 103 9.4 A T 335 334 100 11.3 8 SB L 48 48 100 38.4 E WB R 4 4 94 1.7 A Subtotal 375 375 100 11.0 8 L 13 14 108 6.5 A Total T 92 91 99 8.8 A EB R 37 37 100 4.8 A Subtotal 142 142 100 7.5 A L 93 92 99 6.8 A T 42 41 98 8.7 A WB R 29 33 113 4.4 A Subtotal 164 166 101 6.8 A Total 1,U4b 1 1,050 101 6.9 A Intersection: Philbin Road & Alpine Avenue Type: Unsiqnalized EENffrVfffflTWWd Delay/Veh (sec) Approach Movement i wowlumqe��j 242 100 • 1.1 A T 242 NB R 88 88 100 0.7 A Subtotal 330 330 100 1.0 A L 114 108 95 8.5 A SB T 411 412 100 3.7 A Subtotal 525 520 99 4.7 A L 48 48 100 38.4 E WB R 122 126 103 5.5 A Subtotal 170 174 102 14.6 8 Total 1,026 1,024 100 5.2 A Intersection: Philbin Road & W Chubbuck Road Type: All -way Stop Controlled Intersection: Philbin Road & Alpine Avenue Type: Unsiqnalized Demand bob, D - Approach Movement Movement i wowlumqe�M Volume L 13 IWAvg • 13 102 8.4 A 237 98 T 315 318 101 2.7 A NB 134 106 0.9 A NB R 76 76 101 4.2 A Subtotal 404 407 101 3.2 A 1.3 A L 36 36 100 10.4 8 10.1 8 T 352 358 102 12.4 8 SB SB R 4 3 71 1.8 A 5.7 A Subtotal 392 397 101 12.1 8 108.4 F L 13 13 100 6.5 A 7.3 A T 92 92 100 9.4 A EB Subtotal 240 242 101 37.8 E R 41 44 107 5.5 A Subtotal 146 149 102 8.0 A 10.9 8 L 119 119 100 7.6 A T 42 43 103 9.6 A WB R 29 31 106 4.7 A Subtotal 190 1 193 102 1 7.6 A Total 1,132 1 1,146 101 1 7.7 A Intersection: Philbin Road & Alpine Avenue Type: Unsiqnalized 11111trMUMMrved Delay/Veh (sec) Approach Movement i wowlumqe�M • T 242 237 98 1.5 A R 126 134 106 0.9 A NB Subtotal 368 371 101 1.3 A L 161 157 98 10.1 8 T 411 423 103 4.0 A SB Subtotal 572 580 101 5.7 A L 79 73 92 108.4 F R 161 169 105 7.3 A WB Subtotal 240 242 101 37.8 E Total 1,180 1,193 101 10.9 8 Intersection: Philbin Road & W Chubbuck Road Type: All -way Stop Controlled Intersection: Philbin Road & Alpine Avenue Type: Unsiqnalized Demand D - Approach Movement Movement i wowlumqe�V Volume L 16 IMyg • 14 90 7.0 A 266 100 T 314 311 99 2.3 A NB 91 101 0.3 A NB R 60 59 98 4.0 A Subtotal 390 384 98 2.7 A 0.4 A L 40 40 99 6.1 A 8.9 A T 370 377 102 14.2 8 SB SB R 5 6 114 1.9 A 4.7 A Subtotal 415 423 102 13.3 8 14.8 B L 15 14 92 7.1 A 5.3 A T 100 102 102 9.7 A EB Subtotal 175 167 95 8.1 A R 40 44 109 5.7 A Subtotal 155 160 103 8.4 A 3.8 A L 105 97 93 7.5 A T 45 45 101 10.4 8 WB R 35 36 103 4.6 A Subtotal 185 1 178 96 1 7.6 A Total 1,146 1 1,145 100 1 8.2 A Intersection: Philbin Road & Alpine Avenue Type: Unsiqnalized ENEWWWWWd Delay/Veh (sec) Approach Movement i wowlumqe�V • T 265 266 100 0.5 A R 90 91 101 0.3 A NB Subtotal 355 357 101 0.4 A L 115 114 99 8.9 A T 450 453 101 3.6 A SB Subtotal 565 567 100 4.7 A L 50 49 98 14.8 B R 125 118 95 5.3 A WB Subtotal 175 167 95 8.1 A Total 1,094 1,091 100 3.8 A Intersection: Philbin Road & W Chubbuck Road Type: All -way Stop Controlled Intersection: Philbin Road & Alpine Avenue Type: Unsiqnalized Demand bob, D - Approach Movement Movement i wowlumqe��ML Volume L 20 IWAvg • 20 100 8.7 A 258 97 T 333 338 102 2.8 A NB 151 107 0.5 A NB R 88 84 95 4.1 A Subtotal 441 442 100 3.3 A 0.7 A L 40 36 89 6.4 A 13.1 8 T 393 397 101 17.8 C SB SB R 5 6 114 1.9 A 6.3 A Subtotal 438 439 100 16.6 C 102.5 F L 15 16 105 8.0 A 6.5 A T 100 99 99 10.3 8 EB Subtotal 268 270 101 37.4 E R 46 48 104 6.3 A Subtotal 161 163 101 8.9 A 11.0 8 L 139 138 99 9.4 A T 45 48 107 11.5 8 WB R 35 36 103 6.4 A Subtotal 219 1 222 101 1 9.4 A Total 1,259 1 1,266 101 1 9.7 A Intersection: Philbin Road & Alpine Avenue Type: Unsiqnalized 11111trMUMMrved Delay/Veh (sec) Approach Movement i wowlumqe��ML • T 265 258 97 0.8 A R 141 151 107 0.5 A NB Subtotal 406 409 101 0.7 A L 178 182 102 13.1 8 T 450 450 100 3.6 A SB Subtotal 628 632 101 6.3 A L 92 87 95 102.5 F R 176 183 104 6.5 A WB Subtotal 268 270 101 37.4 E Total 1,302 1,311 101 11.0 8 Chubbuck - The Academy Traffic Impact Study APPENDIX C Site Plan I I I I 4 I I I I � I STUDIO ARCHITECTURE SITE PLAN Connor Academy Public Charter SchooHE ... ll,"c* Middle School M615THSITELINW S'li1t#430 WX9HINGION.!]C 221005 O 1295 Alpine Ave Chubbuck, Idaho 83202 2112"O.Q' jlj e'ip SiB.0270{Pj 1MM4.MIM AFG COM September 10, 2021 Chubbuck - The Academy Traffic Impact Study APPENDIX D 95th Percentile Queue Length Reports Sim Traffic Queueing Report HALES ENGINEERING Project: ID Chubbuck The Academy TIS innovative transportation solutions Analysis: Existing (2021) Background Time Period: Morning Peak Hour 95" Percentile Queue Length (feet) - Rounded Up to Nearest Multiple of 25 ft Project #: UT21-2040 01: Philbin Road & W Chubbuck Road 75 125 75 75 02: Philbin Road &Alpine Avenue 25 25 150 125 75 SimTraffic Queueing Report HALES ENGINEERING Project: ID Chubbuck The Academy TIS innovative transportation solutions Analysis: Existing (2021) Background (Mitigated) Time Period: Morning Peak Hour 95"Percentile Queue Length (feet) - Rounded Up to Nearest Multiple of 25 ft Project #: UT21-2040 NB EB I WB Intersection LT R TM L LTR R 01: Philbin Road & W Chubbuck Road 75 125 75 75 02: Philbin Road & Alpine Avenue 25 25 75 100 75 SimTraffic Queueing Report HALES ? ENGINEERING Project: ID Chubbuck The Academy TIS innovative transportation solutions Analysis: Existing (2021) Plus Project Time Period: Morning Peak Hour 95"Percentile Queue Length (feet) - Rounded Up to Nearest Multiple of 25 ft Project #: UT21-2040 NB FBI WB Intersection LT R ]��T LTR ' L L710d 01: Philbin Road & W Chubbuck Road 75 150 75 100 02: Philbin Road & Alpine Avenue 25 25 100 a 150 SimTraffic Queueing Report HALES ENGINEERING Project: ID Chubbuck The Academy TIS innovative transportation solutions Analysis: Future (2026) Background Time Period: Morning Peak Hour 95"Percentile Queue Length (feet) - Rounded Up to Nearest Multiple of 25 ft Project #: UT21-2040 I NB I SB I EBI WB 01: Philbin Road & W Chubbuck Road 50 75 50 200 75 100 02: Philbin Road & Alpine Avenue 25 75 75 75 SimTraffic Queueing Report HALES ENGINEERING Project: ID Chubbuck The Academy TIS innovative transportation solutions Analysis: Future (2026) Plus Project Time Period: Morning Peak Hour 95"Percentile Queue Length (feet) - Rounded Up to Nearest Multiple of 25 ft Project #: UT21-2040 NB EBI WB Intersection JM%R �T LTR ' L EMINd 01: Philbin Road & W Chubbuck Road 50 75 75 225 100 100 02: Philbin Road & Alpine Avenue 25 25 125 50 125 /6470_t_\ CHUBBUCK 1 0 0 H 0 May 2, 2022 Sean Harris Development Services Manager RE: Academy Campus Preliminary Plat Sean, Public Works Department 290 E. Linden Avenue, Chubbuck, ID 83202 208.237.2430 — Fax 208.237.2409 www.CityofChubbuck.us On April 12, 2022, the Land Use & Development Commission approved a Conditional Use Permit for the proposed middle school adjacent to Connor Academy. That approval removed the following recommended condition: 1. Conditions of Approval necessary to approve the Permit are (if any): C. Require widening of Philbin Rd with the ROW to add a southbound left -turn lane and northbound right -turn lane onto Alpine Ave. and replaced it with the following: Review after end of 2nd year of school opening. Although the LUDC determined that the addition of turn lanes on Philbin Road could be delayed, possibly indefinitely, based on the planned use as part of the conditional use permit process, I believe that it should also be considered as part of the preliminary plat review. City Code requires that as properties are developed or platted, the properties be developed in accordance with certain requirements of City Code. The following are requirements of City Code for the property which would require a waiver from Council to remove: • Philbin Road is a classified Major Arterial which requires 100' of right-of-way all portions of the plat with frontage and 80' standard back of curb to back curb or 72' swale section curb to curb (section 16.12.020.C). • Pedestrian walks are required on both sides of streets (section 16.12.020) In addition, the following sections of city code are relevant to the review of the preliminary plat: 17.12.100.6.5 sates: If City Public Works determines that the proposed subdivision will result in significant traffic impacts then a "traffic impact study" will be required as part of the commission's review. 17.12.080.F. states: Representatives from the following City departments and affected agencies shall be given the opportunity to review the plat and to provide comments: 1. City staff shall review the preliminary plat for the following: g. New streets and traffic impacts on existing roadways. J: I Engineering �Development�Academy Campus - 2022�Platting -Land Use�Preliminary�Traffic Impact Analysis Letter 5-4- 22.docx From my review of the preliminary plat, it is my opinion that delaying, and possibly removing the requirement to install turn lanes on Philbin Road creates additional liability for the City. Over the last few years, there have been numerous requests from Connor Academy and their parents made to the City to improve the intersection of Philbin Road and Alpine Ave. It is known that the traffic delays and issues seen at that intersection are caused by the traffic going to and from Connor Academy. It has been the City's position that when any expansions or future schools were being considered in the area, a traffic impact study would be completed with the intent to correct the problem, or to at least make improvements. In accordance with City policy, a traffic impact study was completed by the applicant's consultant, Hales Engineering. That study confirmed that the performance of that intersection is below an acceptable level of service under current conditions and will get worse with additional traffic if improvements are not made. The engineering study recommended the addition of north -bound and south -bound turn lanes on Philbin Road to improve safety and turning movements in the study area. With a documented problem and a recommendation to make improvements, now would typically be the time to make the improvements. Public Works staff are sympathetic to the fact that making these improvements would be a significant cost for the project. We also understand that there will be changes to the road network, such as the connection of Alpine Ave. to the east that may change, and hopefully improve, the flow of traffic in the area. However, at this time, it is not known how the traffic patterns will change and the traffic impact study does not address this. In addition, the traffic impact study did not evaluate the impact of staggering the school start times, so it is unknow what type of impact that might make. At this time, we have a documented problem, improvements recommended by an engineering study, and an opportunity to have the project that is creating the problem address the problem. As mentioned above, my concern is that if we ignore this, the City is accepting liability associated with the problem and may end up needing to fund the improvements with tax money. As the Land Use & Development Commission and City Council consider the preliminary plat for Academy Campus, it is my recommendation that they consider the following list of questions when deciding if the recommended improvements to Philbin Road will be required: 1. If the intersection continues to be a problem during the first two years of school operations, is the City willing to accept the liability of not addressing the problem? 2. What will happen following the two years of operations when it is time to review conditions again? Who will pay for the study at that point? 3. If improvements are still recommended, who will pay for them? 4. If the applicant doesn't have the funds to make the improvements now, is there a way to ensure that they will have the funds available in two years if the improvements are needed? If funds are not available, will the City need to require the closure of the school? Therefore, I am requesting that although a review of the use itself may not have justified the addition of the turn lanes, that the Commission and Council consider the requirement as part of the preliminary plat review. If it is determined that the turn lanes and other improvements to Philbin Road will not be 194�0t\ CHUBBUCK I D A H D 290 E. Linden Avenue, Chubbuck, ID 83202 208.237.2430 — Fax 208.237.2409 www.CityofChubbuck.us required at this time, I recommend addressing the questions listed above so that the future process is well defined. Sincerely, Bridger Morrison, P.E. Public Works Director/City Engineer 1940't-\ CHUBBUCK I D A H D 290 E. Linden Avenue, Chubbuck, ID 83202 208.237.2430 — Fax 208.237.2409 www.CityofChubbuck.us Sean Harris From: Devin Hillam Sent: Tuesday, May 3, 2022 2:00 PM To: Joel Lovstedt Subject: Philbin Road Hi Joel, I hope all is going well. It looks like we're processing a plat application for the school's new lot for the middle school and so I wanted to make you aware that you'll need to request a deviation from city code requirements that would a) require dedication of right-of-way per the comprehensive plan/city code and b) improve the right-of-way and frontages of roads. In the case the plat, city code section 16.12.020.0 would require a 50' dedication of right-of-way from the centerline of Philbin along with street (since Philbin is a classified Major Arterial) and frontage improvements in that 50' (16.12.020.A). City Code also requires that pedestrian walkways along streets (16.12.020.Q) and for non -single family residential uses, street trees and shrubs (18.14.020). Regardless of project, residential, commercial, industrial, or other, these criteria would apply and have been regularly applied in the City of Chubbuck. I know that the use was approved without any additional lanes right now (per the Commission's conditions of approval) but the criteria for plats and associated improvements are separate and distinct criteria; in this instance, because the plat incorporates an access and frontage along Philbin Road unlike the conditional use permit, these criteria are applicable. My development services manager has been in communications with your surveyor, Stewart, at Dioptra to communicate the need for a written deviation request to go along with your plat. Unlike the conditional use permit that was only reviewed by the Land Use and Development Commission, the preliminary plat will be first reviewed by the Commission for a recommendation and then by the City Council for a decision and a deviation from the city requirement likely will not be supported by staff through the process. Stewart is familiar with our requirements and our processes and he's likely the best one to contact if you have questions but feel free to reach out to my staff or I, or our public works director, if you need any clarification. Best, CHUBBUCK I a A H a Devin Hillam, AICP I Community Services Director 290 E Linden Ave. Chubbuck, ID 83202 Office: (208) 239-3239 Work Cell: (208) 557-1781