08 C8-2023-0233 - Knox Preserve; District 10.pdf — original pdf

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SUBDIVISION REVIEW SHEET CASE NO.: C8-2023-0233 COMMISSION DATE: January 30, 2024 SUBDIVISION NAME: Knox Preserve Preliminary Plan ADDRESS: 7304 Knox Lane APPLICANT: Chase Equities, Inc AGENT: Atwell Group (Connor Overby, P.E) ZONING: SF-3 (single family) NEIGHBORHOOD PLAN: n/a AREA: 5.828 acres (253867.68 sf) LOTS: 15 COUNTY: Travis DISTRICT: 5 WATERSHED: Shoal Creek JURISDICTION: Full Purpose SIDEWALKS: Sidewalks will be constructed along the street. VARIANCE: 1. A Land Use Commission variance is requested to the Land Development Code Section 25-4-171(A) which requires lots to abut a dedicated public street. The preliminary plan proposed for the lots to not front a dedicated public street, and for the lots to have frontage to a private street. DEPARTMENT COMMENTS: The request is for the approval of a variance to 25-4-171(A) to allow the lots in the preliminary plan to not front a public street and front a private street. STAFF RECOMMENDATION: Staff recommends approval of the variance as proposed by the Austin Transportation Department (ADT). Refer Exhibit B for the recommendation from ATD for the approval of the variance to section 25-4-171(A) of the Land Development Code. CASE MANAGER: Cesar Zavala PHONE: 512-974-3404 E-mail: cesar.zavala@austintexas.gov ATTACHMENTS Exhibit A: Vicinity map Exhibit B: Variance Memo Exhibit C: Proposed Preliminary Plan ` 1 of 708 C8-2023-0233 - Knox Preserve; District 101 of 72 of 708 C8-2023-0233 - Knox Preserve; District 102 of 7 TO: FROM: DATE: Members of the Zoning & Platting Commission Renee Johns, Capital Improvement Program Manager Austin Transportation Department December 1, 2022 SUBJECT: Knox Preserve: C8-2023-0233 Variance of Title 25, Section 25-4-171 ___________________________________________________________________________ The applicant for the above referenced subdivision is requesting a variance to Title 25 of the Land Development Code (LDC) Section 25-4-171, which requires each lot in a subdivision abut a dedicated public street. The proposed development is in the City of Austin’s full purpose jurisdiction. The site is south of Greystone Dr. and West of Chimney Corners. The subdivision preliminary plan consists of 5.828 acres, including 12 residential lots, 2 open space/drainage easement lots, and one private street lot. The proposed subdivision will include a private street in lieu of a public ROW. The private street will be maintained privately by the Home Owners Association (HOA). The proposed street has received the required waivers from the geometric design standards for both the width of the street and cul-de-sac configuration. All other design standards for the private street meet the TCM requirements for a Level 1 street. Staff recommends approval of the variance for the following reasons: • The Private Street will provide direct access to a public street (Knox Ave). • The proposed Private Street does not hinder the implementation of the Austin Strategic Mobility Plan. • A Public Access Easement (PAE) overlays the proposed private street. • TPW Transportation Development Services staff has not received any expressed concerns from the neighborhood group nor any opposition to the applicant’s request for this variance. If you should have any questions or require additional information, please feel free to contact me at 512-974-6486. CC: Cesar Zavala, Senior Planner (DSD) Delivering a safe, reliable, and sustainable transportation system that enhances the environment and economic strength of the region. 3 of 708 C8-2023-0233 - Knox Preserve; District 103 of 7Knox Preserve Variance Request and Justification Letter December 20, 2023 Page 1 Jose Roig Director Development Services Department City of Austin 6310 Wilhemina Delco Drive Austin, TX 78752 Knox Preserve Variance Request and Justification Letter Dear Mr. Roig: This project is a proposed low impact, residential subdivision located on a legal tract that has been a single- family residential lot and the remainder of the Running Rope Ranch comprised of 5.82 acres adjacent to the Highland Hills Northwest Subdivision at the end of Knox Lane. On behalf of Knox Preserve, LLC, Texas Engineering Solutions would like to request a variance and/or waiver for the following items associated with the Preliminary Plan for Knox Preserve. 1. Request that the residential lots within this subdivision have access to a private street located entirely within an access, drainage, and PUE lot which has frontage to the public right-of-way for Knox Lane. §25-4-171(A) of the Land Development Code states “each lot in a subdivision shall abut a dedicated public street”. This development is designed to utilize the area adjacent to the street for innovative water quality treatment facilities. These such facilities are not permitted within public right-of-ways under §25-6-52; however, being placed within an access, drainage, and PUE lot the City would be able to access the facilities for routine inspections. 2. Request that the subdivision be allowed to have only one access street which may be granted by the director under §25-4-157(C)(3)(a)&(D)(2)(e)&(h) of the Land Development Code. The proposed private street is only 385 feet in length and serves only 12 residential dwellings. The only route to provide a secondary access street is through the associated critical water quality zone and several critical environmental feature buffer zones as the remaining perimeter of the site is entirely developed as SF-3 residential. 4 of 708 C8-2023-0233 - Knox Preserve; District 104 of 7Knox Preserve Variance Request and Justification Letter December 20, 2023 Page 2 Atwell LLC, and Knox Preserve, LLC are aware that there are a few waivers and/or variances required to meet the goals of this Low Impact Development. This project has been through the review process a few times before, and we are looking forward to continuing to work with the City staff throughout the development of this highly unique subdivision. If you should have any questions pertaining to this project or if you need further explanation, please feel free to call our office at (512) 904-0505. Sincerely, Connor J Overby, PE, CPESC Project Manager Atwell, LLC TBPE Firm #12242 12/20/20235 of 708 C8-2023-0233 - Knox Preserve; District 105 of 7KNOX PRESERVE PRELIMINARY PLAN BEARING BASIS E . U . P ' 0 1 ) T V P ( Y A W A I L A T A N 6 . E . U . P ' 0 1 7 8 9 0 1 K N O X L N 1 1 ( P V T ) 2 1 3 4 5 MIN. FFE: 841.5' MIN. FFE: 839.5' MIN. FFE: 841.0' 1 0' P . U .E . 2 1 N L X O N K ENGINEER'S CERTIFICATION LAND USE SCHEDULE VICINITY MAP SUBMITTAL DATE: October 9, 2023 SHEET INDEX 1 COVER PRELIMINARY PLAN GENERAL NOTES 2 NORTH ARROW & SCALE 750 LEGAL DESCRIPTION NOTES OWNER DEVELOPER CHASE EQUITIES, INC. JIMMY NASSOUR CONSULTANTS / CONTRACTORS ENGINEER: ATWELL, LLC SURVEYOR: HOLT CARSON, INC. PROJECT DATA OWNER / DEVELOPER CONSULTANTS: LOT CURVE TABLE CITY APPROVAL PRELIMINARY SUBDIVISION APPROVAL 1 2 KNOX PRESERVE PRELIMINARY PLAN COVER PRELIMINARY PLAN 1 OF 2 COA CASE NO: C8-2023-0233 6 of 708 C8-2023-0233 - Knox Preserve; District 106 of 7PRIVATE STREET CROSS SECTION N.T.S. PRIVATE STREET DESIGN NOTES NOTES CONTINUED PUBLIC R.O.W. LOT TABLE LOT # LOT AREA LOT ACRES LOT 1 7,651 S.F. LOT 2 8,093 S.F. LOT 3 9,630 S.F. LOT 4 7,221 S.F. LOT 5 8,605 S.F. LOT 6 8,348 S.F. LOT 7 7,408 S.F. LOT 9 8,040 S.F. LOT 10 8,361 S.F. LOT 11 8,477 S.F. LOT 12 8,360 S.F. 0.176 0.186 0.221 0.166 0.198 0.192 0.170 0.185 0.192 0.195 0.192 LOT 8 11,601 S.F. 0.266 LOT 13 119,886 S.F. 2.752 LOT 14 8,825 S.F. 0.203 LOT 15 20,231 S.F. 0.464 TOTAL= 249,994 S.F. 5.739 20' 7.5' PRIVATE STREET LOT 4' S.W. 2' UTILITY, DRAINAGE, PRIVATE STREET LOT 25' FOC-FOC 22' RD @ 2% SLOPE 30' 2' 4' S.W. 17.5' PRIVATE STREET LOT FIRE LANE STRIPING 2' SPILL CURB & GUTTER FIRE LANE STRIPING 2' CATCH CURB & GUTTER PAVEMENT DESIGN BY GEOTECHNICAL ENGINEER TO BE DONE WITH CONSTUCTION PLANS PRIVATE STREET CROSS SECTION (HAMMERHEAD) N.T.S. 40.0' UTILITY, DRAINAGE, PRIVATE STREET LOT 20' 7.5' PRIVATE STREET LOT 4' S.W. 2' 25' FOC-FOC 22' RD @ 2% SLOPE 20' 7.5' PRIVATE STREET LOT 2' 4' S.W. FIRE LANE STRIPING 2' SPILL CURB & GUTTER FIRE LANE STRIPING 2' CATCH CURB & GUTTER PAVEMENT DESIGN BY GEOTECHNICAL ENGINEER TO BE DONE WITH CONSTUCTION PLANS PROJECT DATA OWNER / DEVELOPER CONSULTANTS: CITY APPROVAL PRELIMINARY SUBDIVISION APPROVAL 1 2 KNOX PRESERVE PRELIMINARY PLAN GENERAL NOTES 2 OF 2 COA CASE NO: C8-2023-0233 7 of 708 C8-2023-0233 - Knox Preserve; District 107 of 7