20211117-003a: Stillwater Double Creek Phase 2 SP-2021-0178C staff presentation — original pdf

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STILLWATER - DOUBLE CREEK PHASE 2 10801 BREZZA LN SP-2021-0178C Mel Fuechec Environmental Review Specialist Senior Development Services Department SITE LOCATION Site Location Austin ETJ Austin City Limits Edwards Aquifer Recharge Zone Edwards Aquifer Contributing Zone PROPERTY DATA • Onion Creek • Suburban • Desired Development Zone • Full Purpose • Not located over Edwards Aquifer Recharge Zone • No Critical Environmental Features • Council District 5 EXISTING CONDITIONS The lot is currently undeveloped and is bordered to the North and to the South by multi-family developments. The proposed multi-family development is consistent with the applicable zoning and surrounding properties. North BACKGROUND Austin Fire Department requires two points of ingress/egress. The applicant is proposing one access on Brezza Lane leading South to FM 1626 and another access on the private road leading East to IH 35. Brezza Lane dead ends at the North end of the lot, and there are no other points of access for this property. CRITICAL WATER QUALITY ZONE North VARIANCE REQUEST The request is to vary from Land Development Code 25-8- 261 to allow development in the critical water quality zone for a driveway over the critical water quality zone in order to meet the health and safety requirement of having two points of ingress/egress as set by Austin Fire Department. VARIANCE RECOMMENDATION Staff recommends approval of the variance with the following conditions: 1) Internal, low-traffic pedestrian walkways throughout the site shall be constructed with permeable pavers or porous pavement in accordance with the Environmental Criteria Manual. This will decrease overall impervious cover and increase stormwater infiltration onsite and baseflow in the stream channel. 2) The critical water quality zone shall be crossed with a span bridge design instead of the normal box culvert. This will reduce the bridge’s footprint in the channel and allow for light to penetrate to the natural ground surface and for vegetation to grow thus maintaining a more natural stream channel. QUESTIONS? ADDITIONAL INFO -BRIDGE Example Span Bridge Example Box Culvert ADDITIONAL INFO -TREES 5.56 acres to be dedicated to City of Austin as parkland & 546 inches of native trees are to be planted onsite