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CC - Response Letter Public Works Preliminary Plat HELPING EACH OTHER CREATE BETTER COMMUNITIES LL ® THE GATEWAY IA" GDON MAPPING GROUP INC. J-U-B FAMILY OF COMPANIES July 20, 2022 City of Meridian 33 E Broadway Ave Meridian, ID 83642 RE: Preliminary Plat and Public Works Comment (Response) Dear Ms.Allen: PRELIMINARY PLAT: 1. The final plat shall include the following revisions: a. All street buffers are required to be placed in a common lot or on a permanent dedicated buffer, maintained by the property owner of business owners' association as set forth in UDC 11-3B7C.2b. Required street buffers are as follows:minimum 25 feet wide along W. Franklin Rd, an arterial street:minimum 35 feet wide along S Ten Mile Rd, an entryway corridor:and minimum 20 feet wide along W Cobalt Fr, a collector street. Street buffers are measured from the back of sidewalk where attached sidewalks are provided and from the back of curb where detached sidewalks are provided per UDC 11- 3B-7C.1a. (Street buffers have been revised to meet requirement) b. The extension of W Cobalt Dr from the east to the west property boundary shall be included in the construction drawings for the first phase of development; or, may be included in a separate submittal to ACHD. (This has been included) c. Depict the Irrigation District's easement for the Kennedy Lateral. (Easement is shown) d. The street section for Cobalt Dr shall include (2) 11-foot wide travel ((Comment has been addressed) anes, 6-foot wide bike lanes, 8-foot wide parallel parking, curb,gutter, 8-foot wide planter strips (i.e. tree lawn/parkway)and detached 6-foot wide sidewalks consistent with Street Section D in the TMISAP(see Pg. 3-21). Parallel parking shall be located to the west of the horizontal curve for Cobalt Dr and be located beyond the sight distance required for the access proposed on Cobalt Dr as required by ACHD. e. A 5-foot wide dry-utilities corridor shall be provided along both sides of Cobalt Dr; both wet utilities may be located in the street. Streetlights shall be placed in the dry utilities corridor on either side of the street in accord with street Section D in the TMISAP(pg. 3- 23). (Comment has been addressed) f. Provide a minimum 8-foot wide tree lawn/parkway along S Ten Mile Rd in accord with the TMISAP. (Revision has been made) 2760 West Excursion Lane, Suite 400, Meridian, ID 83642 W www.*ub.com P 208.376.7330 UTHE P Y ® LANGOON a MAPPING GROUP U1C.INC. J•11•0 ENGINEERS,INC. J-U-B FAMILY OF COMPANIES g. Dry utilities shall be located at the back of the curb in the dry utilities corridor along S Ten Mile Rd and W Franklin Rd in accord with Street Section A and B in the TMISAP (pg. 3-22). (Comment has been addressed) 2. The landscape plan included in Section VIII.0 shall be revised as follows: a. Include shrubs (along with the trees and lawn or other vegetative groundcover) in the proposed street buffers as set forth in UDC 11-3B-7C.3a and along pathways as set forth in UDC 11-3B-12C.2. (Comment has been addressed) b. Street buffers at the required width are required to be placed in a common lot or on a permanent dedicated buffer, maintained by the property owner or business owners' association as set forth in UDC 11-3B-7C.2 (see#2a above for required widths). (Comment has been addressed) c. Include a calculations table on the landscape plan that demonstrates compliance with the landscape standards for street buffers listed in UDC 11-3B-7C.3b; common open space areas listed in UDC 11-3G-3E.2; and pathways listed in UDC 11-3B-12C. (Table has been included) d. Depict a minimum 5-foot wide detached sidewalk along S Ten Mile Rd in accord with UDC 11-3A-17A. (Comment has been addressed) e. Depict a tree lawn along S Ten Mile Rd (minimum 8-feet wide) and W Franklin Rd and pedestrian-scale lights consistent with Street Sections A and B in the TMISAP (see pg. 3- 22). (Comment has been addressed) f. Depict a minimum 8-foot-wide tree lawn along W Cobalt Dr with street lights in the dry utilities corridor on either side of the street consistent with Street Section D in the TMISAP (see pg. 3-23). (Comment has been addressed) g. Depict a minimum 6-foot wide detached sidewalk within the street buffer along S Ten Mile Rd consistent with Street Section A in the TMISAP (see pg. 3-20).A 10-foot wide pathway is preferred based on ACHD's adopted Livable Streets Performance Measures but not required. (Comment has been addressed) 3. The subject property shall be subdivided prior to issuance of the first Certificate of Occupancy for the development as set forth in the Development Agreement (Ins.#2021-132704, provision #5.ID). (Noted.) 4. Submit an updated Geotechnical Engineering report prior to or with the first final plat application. (This has been submitted) 5. The Entirety of Cobalt Dr.from the east to the west property boundary, on-site and off-site, shall be constructed prior to or with the first phase of development in accord with the specifications noted herein. (Comment has been addressed) 6. A Certificate of Zoning Compliance and Design Review application shall be submitted for each structure (or group of structures if desired) and approved prior to submittal of application(s)for building permits.The plans submitted shall comply with the design elements of the Ten Mile interchange Specific Area Plan (TMISAP) and the design standards in the Architectural Standards 2 l (,J.U!B ,k ® THE GATEWAY LANGDON MAPPING GROUP INC. J•U•B ENGINEERS,INC. J-U-8 FAMILY OF COMPANIES Manual (see the Application of Design Elements matrix on pg. 3-49 of the plan) as required by the Development Agreement.The commercial portion of the development should incorporate similar design elements, colors, and material as the residential portion of the development. (This ongoing requirement will be met) 7. Public Art shall be provided within the development consistent with the Development Agreement and TMISAP(pg. 3-49). A detail of such shall be included with the final plat application. (Details of Public Art planned for the development are attached with application materials) PUBLIC WORKS 1. Site Specific Conditions of Approval I. Extend water main to existing blow off to the west. (Water main has been extended) II. Extend water main to the southern boundary in the right-of-way. (Comment has been addressed) III. Eliminate dead ends by looping water through the development. (Water has been looped) IV. Dead end water mains must end in a hydrant. (Comment has been addressed) V. Water and sewer mains require a minimum 20-foot-wide easement per utility, or 30 foot combined with minimum separation maintained between mains. All easements must be free from permanent structures including but not limited to buildings, carports, streetlights, infiltration trenches, trees, bushes, trash enclosures, etc. (Comment has been addressed) VI. Manholes should not be placed in curb or gutter. (Comment has been addressed) VI I. Proposed manhole SSWR-16 at the corner of Ten Mile and Cobolt should be removed from the sidewalk. (Comment has been addressed) VIII. Access roads and easements are required for all manholes outside of right-of- way. (Comment has been addressed) IX. Angles in and out of manholes must be a minimum 90 degrees in the direction of flow. (This standard has been met) X. No sewer service lines should pass through infiltration trenches. (Comment has been addressed) Sincerely, Darral Moore, P.E. J-U-B ENGINEERS, Inc. 3