20240821-003: DRAFT Infill Plats Site Plan Lite II Proposed Language — original pdf

Backup

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 PLANNING COMMISSION VERSION TWO WORKING DRAFT-SUBJECT TO CHANGE August 27th, 2024 ORDINANCE NO. ____________ AN ORDINANCE AMENDING CITY CODE SECTIONS 25-8-64 AND 25-5-3 AND CREATING A NEW CITY CODE SECTION 25-7-67 RELATED TO DEVELOPMENT REGULATIONS APPLICABLE TO RESIDENTIAL RE- SUBDIVISIONS AND DEVELOPMENT APPLICATIONS AND DEVELOPMENT APPLICATIONS FOR MULTI-FAMILY RESIDENTIAL SITE DEVELOPMENT OF FIVE TO SIXTEEN UNITS. BE IT ORDAINED BY THE CITY COUNCIL OF THE CITY OF AUSTIN: PART 1. Subsection (B) of City Code Section 25-5-3 (Small Projects) is amended to read: (B) The following are small projects: (1) construction of a building or parking area if the proposed construction: (a) does not require a variance from a water quality regulation; (b) does not exceed 5,000 square feet of impervious cover; and (c) the construction site does not exceed 10,000 square feet, including the following areas: (i) construction; (ii) clearing; (iii) grading; (iv) construction equipment access; (v) driveway reconstruction; (vi) temporary installations, including portable buildings, construction trailers, storage areas for building materials, spoil disposal areas, erosion and sedimentation controls, and construction entrances; (vii) landscaping; and (viii) other areas that the director determines are part of the construction site; 8/16/2024 Page 1 of 4 COA Law Department 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 PLANNING COMMISSION VERSION TWO WORKING DRAFT-SUBJECT TO CHANGE August 27th, 2024 (2) (3) construction of a storm sewer not more than 30 inches in diameter that is entirely in a public right-of-way or an easement; construction of a utility line not more than eight inches in diameter that is entirely in a public right-of-way; (4) construction of a left turn lane on a divided arterial street; (5) construction of street intersection improvements; (6) widening a public street to provide a deceleration lane if additional right- of-way is not required; (7) construction of five to 16 dwelling units that meet all applicable requirements for review under Section 25-7-67 (Modified Drainage Standards for Residential Infill); (8[7]) depositing less than two feet of earth fill, if the site is not in a 100-year floodplain and the fill is not to be deposited within the dripline of a protected tree; (9[8]) construction of a boat dock as an accessory use to a single-family residential use, duplex residential use, two-family residential use, or secondary apartment special use if shoreline modification or dredging of not more than 25 cubic yards is not required; or (10[9]) construction of a retaining wall, if the wall is less than 100 feet in length and less than eight feet in height, and the back fill does not reclaim a substantial amount of land except land that has eroded because of the failure of an existing retaining wall; (11[10]) minor development that the director determines is similar to that described in Subsections (B)(1) through (9) of this section; (12[11]) the replacement of development that is removed as a result of right-of- way condemnation; and (13[12]) the construction of a telecommunications tower described in Subsection 25-2-839(F) or (G) (Telecommunication Towers). 8/16/2024 Page 2 of 4 COA Law Department  PLANNING COMMISSION VERSION TWO WORKING DRAFT-SUBJECT TO CHANGE August 27th, 2024 PART 2. City Code Chapter 25-7 (Drainage) is amended to add a new Section 25-7-67 (Modified Drainage Standards for Residential Infill) to read: § 25-7-67 MODIFIED DRAINAGE STANDARDS FOR RESIDENTIAL INFILL. (A) This section applies to: (1) a resubdivision that: (a) (b) (a) (b) does not exceed a gross site area of one acre; includes only land within a subdivision that was originally platted as a residential subdivision; and (c) does not require a plat vacation; and (2) a site plan that: does not exceed a gross site area of 0.50 acres; and is limited to development of 5 to 16 dwelling units on a legal lot or tract. (B) Except as provided in Subsections (C) and (D), an applicant is not required to provide infrastructure, studies, or analyses to demonstrate a development application complies with Section 25-7-61 (Criteria for Approval of Development Applications), Section 25-7-151 (Stormwater Conveyance and Drainage Facilities), or Section 25-7-152 (Dedication of Easements and Right-of-Way) if: (1) The application is a resubdivision that does not exceed a gross site area of 0.25 acres; or (2) The applicant provides a drainage plan demonstrating that, without altering natural topography, all stormwater runoff from the development will be discharged: to an existing storm drainage system; or (a) (b) into right-of-way. 8/16/2024 Page 3 of 4 COA Law Department 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85  PLANNING COMMISSION VERSION TWO WORKING DRAFT-SUBJECT TO CHANGE August 27th, 2024 (C) A development application must demonstrate all proposed improvements will be outside the erosion hazard zone, unless protective works are provided as prescribed in the Drainage Criteria Manual. (D) The owner of real property proposed to be developed shall be required to provide an easement for stormwater flow to the limits of the 100-year floodplain, as prescribed in the Drainage Criteria Manual. PART 3. Subsection (B) of City Code Section 25-8-64 (Impervious Cover Assumptions) is amended to read: (B) Except as provided in Subsection (C): for each lot greater than three acres in size, 10,000 square feet of impervious cover is assumed. for each lot greater than one acre and not more than three acres in size, 7,000 square feet of impervious cover is assumed; for each lot greater than 15,000 square feet and not more than one acre in size, 5,000 square feet of impervious cover is assumed; for each lot greater than 10,000 square feet and not more than 15,000 square feet in size, 3,500 square feet of impervious cover is assumed; [and] for each lot greater than 5,750 square feet and not more than 10,000 square feet in size, 2,500 square feet of impervious cover is assumed[.]; and (6) for each residential lot not more than 5,750 square feet in size, the amount of impervious cover assumed is; (a) the maximum amount of impervious cover allowed under the applicable zoning district regulations; or (b) for lots in the extraterritorial jurisdiction, 2,500 square feet of impervious cover. (1) (2) (3) (4) (5) 8/16/2024 Page 4 of 4 COA Law Department 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116