B-08 (C8-2018-0165.2A - Cascades at Onion Creek, Phase Two Final Plat; District 5).pdf — original pdf

Backup

SUBDIVISION REVIEW SHEET CASE NO.: C8-2018-0165.2A Z.A.P. DATE: January 12, 2021 SUBDIVISION NAME: Cascades at Onion Creek East, Phase Two AREA: 31.18 acres LOTS: 136 APPLICANT: M/I Homes of Austin, LLC (William G. Peckman) AGENT: LJA Engineering Inc. (Russell Kotara, P.E.) ADDRESS OF SUBDIVISION: 2333 Cascades Ave WATERSHED: Onion Creek COUNTY: Travis EXISTING ZONING: I-SF-2 JURISDICTION: Full Purpose PROPOSED LAND USE: Residential / Open Space / Right-of-Way DEPARTMENT COMMENTS: The request is for the approval of Cascades at Onion Creek East, Phase Two, comprised of 136 lots on 31.1acres. The plat does not comply with the criteria for approval in LDC 25-4-84(B) and staff recommends disapproval for the reasons listed in the attached comment report. An application that has been disapproved with reasons may be updated to address those reasons until the application expires. If the applicant submits an update to address the reasons for disapproval, that update will be presented to the Land Use Commission within fifteen days of submittal. STAFF RECOMMENDATION: Disapproval for reason listed in Exhibit C in the support material. CASE MANAGER: Cesar Zavala E-mail: cesar.zavala@austintexas.gov PHONE: 512-974-3404 ATTACHMENTS Exhibit A: Vicinity map Exhibit B: Proposed plat Exhibit C: Comment report dated January 7, 2021 Exhibit A Exhibit B Exhibit C CITY OF AUSTIN –DEVELOPMENT SERVICES DEPARTMENT SUBDIVISION APPLICATION – MASTER COMMENT REPORT CASE NUMBER: REVISION #: CASE MANAGER: C8-2018-0165.2A 00 Cesar Zavala UPDATE: PHONE #: U1 512-974-3404 PROJECT NAME: LOCATION: Cascades at Onion Creek, Phase Two Final Plat 2333 CASCADES AVE SUBMITTAL DATE: REPORT DUE DATE: January 11, 2021 FINAL REPORT DATE: January 7, 2021 December 28, 2020 STAFF REPORT: This report includes all staff comments received to date concerning your most recent subdivision application submittal. The comments may include requirements, recommendations, or information. The requirements in this report must be addressed by an updated submittal. The subdivision application will be approved when all requirements from each review discipline have been addressed. If you have any questions, concerns or if you require additional information about this report, please contact your case manager at the phone number listed above or by using the contact information listed for each reviewer in this report. Any change to the plan/plat shall not cause noncompliance with any applicable code or criteria. In addition, any change to the plat may trigger new comments. UPDATE DEADLINE INFORMATION (LDC 25-4-56; 25-4-82): All comments must be addressed by filing an updated submittal prior to the update deadline of March 15, 2021. Otherwise, the application will expire. If this date falls on a weekend or City of Austin holiday, the next City of Austin workday will be the deadline. Extension of Review Period, Extension of Update Deadline and Tolling of Application Period do not apply to applications for preliminary plan, plat or subdivision construction plans (LDC 25-1-88; 25-1-89; 25-1- 90). UPDATE SUBMITTAL INSTRUCTIONS (LDC 25-1-83): 1. Applicants must make an appointment with Intake Staff (512-974-1770 or LURIntake@austintexas.gov) in order to submit an update. 2. Your update must include the following items: a. This report b. The revised plat/plan in pdf format c. A letter that addresses each comment in the master comment report 3. Updates must be submitted on an approved submittal date, between the hours of 8:30 am and 4:00 pm. Refer to the submittal calendar for a list of approved submittal dates. REVIEWERS: Planner 1 : Addison Ptomey Drainage Engineering : David Marquez Environmental : Jonathan Garner Flood Plain : Joydeep Goswami Subdivision : Cesar Zavala Drainage Engineering Review - David Marquez - 512-974-3389 DE1 Per the fiscal policy, fiscal will need to be collected prior to approval for the drainage infrastructure that will be proposed in the arterial or collector roads and for proposed ponds in the subdivision. Submit an estimate and a breakdown for the drainage infrastructure in the ROW for the arterial or collector roads and for the ponds proposed. U1- Comment pending and informal until payment of fiscal Environmental Review - Jonathan Garner - Jonathan.Garner@austintexas.gov ESC FISCAL SURETY [LDC 25-1, Article 5; ECM Appendix S-1] EV 1 Provide a conceptual erosion & sedimentation control plan along with the fiscal estimate for erosion/sedimentation controls and revegetation based on ECM Appendix S-1. A conceptual ESC plan is necessary to assess the accuracy of the ESC fiscal estimate. ESC fiscal surety must be posted with the City of Austin prior to Plat approval. Additional fiscal posting might be required at the time of subdivision construction plan ESC review.  Sites with a limit of construction greater than one acre must include a $3000 per acre LOC clean- up fee in the fiscal estimate. [LDC 25-8, Subchapter A, Article 5; ECM Appendix S-1]  Sites with a limit of construction greater than 25 acres are required to show phasing of disturbance tailored to the specific site conditions. A phased ESC plan and phased fiscal estimate are required. [LDC 25-8, Subchapter A, Article 7, Division 4; ECM 1.4.4]  The revegetation line item quantity must equal the entire LOC area less any existing impervious cover proposed to remain and less proposed public streets and sidewalks. This is necessary in the event that construction ceases after vegetation has been removed from within the LOC. [LDC 25-8, Subchapter A, Article 5; ECM Appendix S-1] Update 1 against the proposed fiscal estimate. Comment pending. A conceptual ESC Plan must also be provided to compare Flood Plain Review - Joydeep Goswami - 512-974-3521 FP1. As of 11/25/2019, the City of Austin regulates to Atlas 14 floodplains. Applicant is required to use the 500-year floodplain as a stand-in for the 100-year or calculate the location of the 100-year floodplain utilizing Atlas 14 rain fall amounts (as outlined in Rule R161-20.01). Floodplain review comments are based on rules in effect on Initial Submittal date. (ordinance number 20191114- 064). Please clarify which storm event was used to delineate the 100-year floodplain on site. Update #1: Please supply a cross section location map the contour elevations to make it clear the floodplain is delineated correctly. FP2. Delineate the COA and FEMA regulatory floodplains per LDC 25-7-33. Update #1: Please see Update #1 response to comment FP1. Comment pending confirmation of floodplain delineation. FP3. FYI: The following will be needed prior to approval of the plan and will be requested if not provided at formal submittal: a. Confirmation statement that the best available data was used to delineate the COA floodplain (DCM 1.2.6) (if utilizing COA/FEMA models) Signed and sealed statement certifying the accuracy of the models for the site (LDC 25-7-61) Digital copy of the floodplain model and all associated backup data within a signed & sealed report (LDC 25-7-33 & 61; DCM 1.2.6) b. c. i. NOTE: A digital version of the report and all associated backup data may be emailed to Joydeep.Goswami@austintexas.gov. Update #1: The electronic copy of the model was not received by this reviewer as stated in the comment response letter. Please send the model to Joydeep.Goswami@austintexas.gov. Subdivision Review - Cesar Zavala - 512-974-3404 SR 1. – SR 5. Comments Cleared. SR 6. Subdivision cases filed after September 1, 2019 can be approved by either the Z.A.P. Commission or the Planning Commission, the commission approval block may need to be modified to show the commission meeting date that is available for approval of the case. (L.D.C. 25-1-83) SR 7. The following items are needed to approve the case and record the plat at Travis County    (T.L.G.C 212.004(d) / T.L.G.C 212.014) : Mylars containing original signatures, with appropriate seals and dates. All signatures, seals and stamps on the plat must be legible and in black ink. Original tax certificate(s) showing all taxes paid for the previous year. (can be provided after approval of the plat) Check for the plat recordation fee and any associated documents. (can be provided after approval of the plat) New Comments: SR 8. Clarify what the dashed lines inside the lots are annotating. If the dashed lines are annotating building setbacks remove the dashed lines from inside the lots. It is recommended to not show setback lines on plats to avoid conflicts with any future zoning changes. (L.D.C. 25-1-83) SR 9. On the approval blocks or signature lines on the plat, update the listed year to 2021. (L.D.C. 25-1- 83) SR 10. On plat Note # 29 list the name of the organization or group, such as the H.O.A, on the plat note maintaining the listed lots. (L.D.C. 25-1-83) AW Utility Development Services - Derek Tucker - 512-972-0077 AW1. Per Utility Criteria Manual Section 2, §15-9, §25-4, §25-5, §25-9, and the Uniform Plumbing Code: The landowner intends to serve each lot with City of Austin water and wastewater utilities. Each lot must have a separate water and wastewater utility connection and no existing or proposed plumbing may cross lot lines. The landowner, at own expense, will be responsible for providing the water and wastewater utility improvements, offsite main extensions, system upgrades, utility relocations and or abandonments to serve each lot. END OF REPORT