B-13 (C8J-2017-0277.1A - Barton Creek Sections K, L, and O Phase 1 Final Plat).pdf — original pdf

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SUBDIVISION REVIEW SHEET CASE NO.: C8J-2017-0277.1A COMMISSION DATE: September 7, 2021 SUBDIVISION NAME: Barton Creek Sections K, L, and O Phase 1 Final Plat ADDRESS: 3101 Lost Creek Blvd. APPLICANT: Stratus Properties (Erin D. Pickens) AGENT: LJA Engineering (John Clark, PE) ZONING: Not applicable - ETJ NEIGHBORHOOD PLAN: Not applicable AREA: 341.51 acres COUNTY: Travis LOTS: 23 DISTRICT: Not applicable - ETJ WATERSHED: Barton Creek JURISDICTION: Full Purpose SIDEWALKS: Sidewalks will be along interior streets and the subdivision side of Tecoma Circle. VARIANCE: N/A DEPARTMENT COMMENTS: The request is for the approval of Barton Creek Sections K, L, and O Phase 1, a final plat out of an approved preliminary plan. This plat proposes 12 single-family lots, one open space/drainage/water quality easement lot, one private street/drainage easement/public utility easement lot, and 9 multi- family/condo lots on 341.51 acres. After the conditions are met, the plat will comply with LDC 30-2-84(B). The conditions include recording a park easement for a trail, finalizing participation in the Regional Stormwater Management Program, posting fiscal, and adding final signatures to the plat. These are administrative actions that require no discretionary review. An application that has been approved with conditions may be updated to address those conditions until the application expires and the plat does not need to be heard before the Commission again. STAFF RECOMMENDATION: Staff recommends approval of the plat, subject to the conditions listed in the comment report dated September 1, 2021, and attached as Exhibit C. CASE MANAGER: Jennifer Bennett PHONE: 512-974-9002 E-mail: jennifer.bennett-reumuth@austintexas.gov ATTACHMENTS Exhibit A: Vicinity map Exhibit B: Proposed plat Exhibit C: Comment report dated September 1, 2021 B-131 of 27B-132 of 27RAMSEY LAND SURVEYING B-133 of 27RAMSEY LAND SURVEYING 14 15 13 12 6 7 5 11 8 4 16 10 9 3 B-134 of 27 7 2 B R A Y S U R V E Y N O . A B S T R A C T N O . 7 4 J O H N L . RAMSEY LAND SURVEYING 1 0 0 7 4 1 S T A N D E R F O R D S U R V E Y N O . A B S T R A C T N O . J . B-135 of 27RAMSEY LAND SURVEYING B R A Y 7 2 A B S T R A C T N O . S U R V E Y N O . J O H N L . 7 4 1 0 0 7 4 1 S T A N D E R F O R D S U R V E Y N O . A B S T R A C T N O . J . B-136 of 27RAMSEY LAND SURVEYING B R A Y 7 2 A B S T R A C T N O . S U R V E Y N O . J O H N L . 7 4 1 0 0 7 4 1 S T A N D E R F O R D S U R V E Y N O . A B S T R A C T N O . J . B-137 of 27RAMSEY LAND SURVEYING 7 1 M C A L L I S T E R S U R V E Y N O . A B S T R A C T N O . 5 6 1 J O H N D . BELLISSIM O LANE (PVT.) P I C C ( P O L T.) V A N E 7 2 B R A Y S U R V E Y N O . A B S T R A C T N O . 7 4 J O H N L . B-138 of 27RAMSEY LAND SURVEYING MSL = 745.42 MSL = 723.07 7 2 B R A Y S U R V E Y N O . A B S T R A C T N O . 7 4 J O H N L . M S L = 7 0 2 . 3 6 M S L = 7 1 0 . 1 8 M S L = 7 2 6 . 2 3 B-139 of 27RAMSEY LAND SURVEYING M SL = 671.75 M S L = 6 8 4 . 6 2 8 1.7 4 L = 6 S M M S L = 6 5 0 . 8 5 B R A Y 7 2 A B S T R A C T N O . S U R V E Y N O . J O H N L . 7 4 M S L = 6 2 8 . 5 9 M S L = 619.05 B-1310 of 27RAMSEY LAND SURVEYING 3 1 . 1 1 6 = L S M 7 2 B R A Y S U R V E Y N O . A B S T R A C T N O . 7 4 J O H N L . B-1311 of 27RAMSEY LAND SURVEYING 7 2 B R A Y S U R V E Y N O . A B S T R A C T N O . 7 4 J O H N L . 3 1 . 1 1 6 = L S B-1312 of 27RAMSEY LAND SURVEYING I B E L L I S S M O L A N E ( P V T . ) 7 2 B R A Y S U R V E Y N O . A B S T R A C T N O . 7 4 J O H N L . BELLISSIMO LANE (PVT.) M SL = 671.75 B-1313 of 27RAMSEY LAND SURVEYING 7 2 B R A Y S U R V E Y N O . A B S T R A C T N O . 7 4 J O H N L . 7 1 5 6 1 J O H N D . M C A L L I S T E R S U R V E Y N O . A B S T R A C T N O . BELLISSIMO LANE (PVT.) 7 2 B R A Y S U R V E Y N O . A B S T R A C T N O . 7 4 J O H N L . M SL = 773.22 I B E L L I S S M O L A N E ( P V T . ) B-1314 of 27RAMSEY LAND SURVEYING 7 1 M C A L L I S T E R S U R V E Y N O . A B S T R A C T N O . 5 6 1 J O H N D . T E C O M A C I R C L E ( 1 0 0 ' R O W ) BELLISSIMO LANE (PVT.) B-1315 of 27RAMSEY LAND SURVEYING 7 2 B R A Y S U R V E Y N O . A B S T R A C T N O . 7 4 J O H N L . 7 1 M C A L L I S T E R S U R V E Y N O . A B S T R A C T N O . 5 6 1 J O H N D . 1 6 . 2 4 7 = L S M 9 3 . 1 3 7 = L S M MSL = 723.07 7 2 B R A Y S U R V E Y N O . A B S T R A C T N O . 7 4 J O H N L . B-1316 of 27RAMSEY LAND SURVEYING 7 2 B R A Y S U R V E Y N O . A B S T R A C T N O . 7 4 J O H N L . 9 9 . 6 0 L = 7 S M M S L = 6 8 6 . 0 4 8 0 . 4 0 7 = L S M 7 2 B R A Y S U R V E Y N O . A B S T R A C T N O . 7 4 J O H N L . M S L = 6 6 1 . 0 6 7 2 . 5 5 L = 6 M S MSL = 670.33 B-1317 of 27RAMSEY LAND SURVEYING 7 2 B R A Y S U R V E Y N O . A B S T R A C T N O . 7 4 J O H N L . B-1318 of 27RAMSEY LAND SURVEYING B-1319 of 27RAMSEY LAND SURVEYING B-1320 of 27RAMSEY LAND SURVEYING B-1321 of 27RAMSEY LAND SURVEYING ” B-1322 of 27B-1323 of 27CITY OF AUSTIN – TRAVIS COUNTY – SINGLE SUBDIVISION OFFICE SUBDIVISION APPLICATION – MASTER COMMENT REPORT CASE NUMBER: REVISION #: CASE MANAGER: C8J-2017-0277.1A 00 Jennifer Bennett UPDATE: PHONE #: U1 512-974-9002 PROJECT NAME: LOCATION: Barton Creek Sections K, L, and O Phase 1 Final Plat 3101 LOST CREEK BLVD SUBMITTAL DATE: FINAL REPORT DATE: September 1, 2021 August 23, 2021 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 (LDC 30-2-56; 30-2-82): All comments must be addressed by filing an updated submittal prior to the update deadline of December 31, 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). UPDATE SUBMITTAL INSTRUCTIONS (LDC 30-1-113): 1. Applicants must make an appointment with Intake Staff (974-1770) 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: Elsa Garza Environmental: Mike Mcdougal Water Quality: Kyle Virr PARD / Planning & Design: Justin Stewart Regional Stormwater Management: Emily Booth Subdivision: Jennifer Bennett B-1324 of 27Environmental Review - Mike McDougal - 512-974-6380 EV 01 through EV 03 Update #1 Comments cleared. EV 04 Update #1 The ESC fiscal estimate is approved. Please contact the Fiscal Office at fiscalsurety@austintexas.gov for ESC fiscal posting instructions. [LDC 25-4-84(D)] Flood Plain Review - Shesh Koirala - 512-974-9396 (voice message only) Email: shesh.koirala@austintexas.gov 1. 2. 3.    4. Comments: Notice to applicant: Applicant must remedy all compliance issues without creating additional compliance issues with the LDC and/or Criteria manuals. A response that fails to correct an issue, or which creates other issues does not comply with the LDC and is insufficient to address the comments. The comments provided describe an issue that must be remedied in order for the application to be approved. Any specific examples are provided as a courtesy and are not intended as an exhaustive list, especially as the site may be updated to have additional compliance issues. Contact this reviewer if you have any questions via email: shesh.koirala@austintexas.gov FYI: Atlas 14 regulations became effective on 11/25/2019. This site is affected by Atlas 14. Please ensure associated floodplain study and Finished Floor Elevations of proposed buildings adjacent to the 100-year floodplain, are in compliance with these regulations. Atlas 14 regulations require FFE’s be 2’ above the current FEMA 500-year floodplain or Atlas 14 100-yr floodplain. FFE requirements will be based on current code at time of application. From topographic inspection and submittals, it appears that the CREEK/CHANNEL/AREA OF CONCENTRATED FLOW has a contributing drainage area of at least 64 acres and the proposed development is in/near the floodplain. As such, provisions in Austin’s Drainage Criteria Manual (DCM) Section 1.2.6 require applicant to perform a floodplain study to determine the limits of the fully-developed 100-year floodplain using methods outlined in the criteria manual. Please do the following: Floodplain Exhibit(s) with HEC-RAS cross sections on top the proposed plan would help us to review and verify the delineation. So please submit a Floodplain Exhibit showing Floodplain delineation, HEC-RAS cross sections, LOC (if applicable or available), lots with lot #, and all improvements related to land movement activities as applicable. You can include this exhibit as a separate sheet or within a Drainage/Floodplain Study report. (Similar to the one that was submitted for RSMP but with additional information as requested above). If floodplain encroaches the proposed development area (after reviewing the above requested exhibits and models if applicable), the applicant must show that there are no adverse impacts to the floodplain as a result of the modification. Adverse impacts include a loss of floodplain storage volume and rises in flood elevations on adjacent properties (Note: should not be any rise in WSE i.e. 0.00 ft). Applicant may have to provide supporting documentation, including modeling to show no adverse impacts as a result of the proposed development. Provide to this reviewer a copy of the floodplain study, including electronic copies of the hydrologic and hydraulic models (even if downloaded from FloodPro) used to determine the flows and water surface elevations. The delineations should be based on the submitted models. U1: Comments cleared The applicant is required to contain the limits of the FEMA and City of Austin Regulatory floodplain within a drainage easement per LDC 25-7-152 and/or LDC 30-4-152. Please provide B-1325 of 27documentation demonstrating this or provide requisite easement. This Comment remains open until easement has been recorded. U1: Comment cleared (easement dedicated by plat) PARD / Planning & Design Review - Justin Stewart - 512-974-9475 PR 1: Parkland dedication is required per Section 30-2-213 of the City Code prior to final plat approval. The City of Austin is the nearest park provider. A park easement 15 ft wide and approximately 18,800 linear feet (6.47 acres) will be recorded prior to plat approval and will be depicted on the plat. Contact this reviewer at Justin.Stewart@austintexas.gov to schedule meetings with other departments to achieve approval. Thank you for showing the easement. I intend on engaging WPD so they are aware of the brief moments that the trail crosses CEF buffers. PR 2: Parkland dedication is required per Section 30-2-213 of the City Code prior to final plat approval. PARD will develop the trail as development fees are not applicable to an applicant in ETJ. Please modify plat note #20 to read that the easement will be recorded prior to final plat approval “as depicted on the plat” and that PARD will construct the trail at a later date. PARD recommends applicant maintain easement with a Parkland Maintenance Agreement. Thank you for modifying the plat note. This note will be removed when easement is recorded and placeholders reflect unique easement ID. Regional Stormwater Management Review - Emily Booth - RSMP@austintexas.gov RSMP FYI. The RSMP payment rate structure for calculating participation payments changed on October 1, 2020. Please visit the program website for more information (www.austintexas.gov/rsmp). A payment calculator spreadsheet is available on the program website which can be used to estimate the RSMP participation payment amount based on user- provided information. Payment calculations are finalized at the time of RSMP application approval and issuance of formal agreement for owner signature. RSMP application reviews are completed during the site development plan or subdivision review process and will not be approved out of cycle. RS1. An approval letter and formal agreement will be issued. Participation is not complete until the formal agreement has been signed and returned to Watershed Protection staff and payment has been made. The date in the plat note described in RS2 should be updated to reflect the date on the approval letter. [DCM 8.2.2.E.] U1: The “updated” submittal packet does not provide what was discussed at the referenced meeting between LJA and City staff. Documentation for requested deductible areas must have acreage information. Stating that an area is deductible is NOT acceptable documentation. Additionally, the updated RSMP application form and “exhibit” does not reflect what was reviewed during the Project Assessment process. New approval documentation will not be issued until the correct and complete supporting documentation for confirming the payment calculation has been provided. FYI/Clarification: The “acreage of participation” in the RSMP application form should be ONLY the acreage of the final plat that is pursuing RSMP participation. The “Area of allowable exclusions (acres)” should be ONLY the acreage of land that is UNDEVELOPABLE and must have supporting documentation provided as an attachment. As discussed at the referenced meeting, not all of the 84.7 acres of Lot 41 is necessarily deductible. Documentation of floodplain easement AREA must be provided to support this value. There are planned trails in the CWQZ and WQTZ which means that these zones are NOT deductible areas. CEF buffers are NOT deductible areas. The lines on the final plat are NOT acceptable as supporting documentation for this value as they do not provide any B-1326 of 27information about what acreage each type of area (floodplain, EF buffers, CWQZ, etc.) contains. The approved preliminary plan included as documentation with the boxed note #7 actually provides documentation that the area being claimed as deductible is able to be developed. RS2. Please place the following note on the plat. The blanks should be filled in upon receipt of the approval letter and agreement. "Participation in the Regional Stormwater Management Program was granted for this subdivision through payment on _________(date) by the City of Austin Watershed Protection Department, Office of The Director. The RSMP case number for this project is _______________. Refer to RSMP Approval Letter and Agreement for conditions of participation." U1: the note on the latest version of the final plat only includes one RSMP case number. This project has two case numbers: one for the single-family residential area and one for the multi-family/commercial area. Both these numbers must be provided. The RSMP participation payment amount is NOT A FEE. Participation in the Regional Stormwater Management Program is an alternative means of compliance to providing on-site detention for flood control and must be approved by City staff. RS3. A signed agreement must be returned, and payment must be made prior to subdivision approval. Refer to instructions in the email delivering an approval letter and formal agreement for details on completing the participation process. [DCM 8.2.2.E.] U1: as the submitted information has changed, this comment stands until details are confirmed and updated, valid, approval documents are issued. Subdivision Review - Jennifer Bennett - 512-974-9002 SR 1: CLEARED SR 2. CLEARED SR 3. Please contact the Fiscal Surety Office to process a City of Austin Subdivision Construction Agreement before plat approval. This agreement will be recorded simultaneously with the plat and the document number added to Plat Note 46. (LDC Section 30-2-38, 30-2-84) UPDATE 1: Pending SR 4. FYI: After all comments are cleared, please send the original tax certificates (crimped) showing all taxes have been paid through 2020, a recording fee check made out to “Travis County Clerk”, and one set of mylars (with original signatures and seals) of the plat to this reviewer. Water Quality Review - Kyle Virr - 512-974-2538 Release of this application does not constitute a verification of all data, information, and calculations supplied by the applicant. The engineer of record is solely responsible for the completeness, accuracy, and adequacy of his/her submittal, whether or not the application is reviewed for code compliance by city engineers. WQ4: Fiscal arrangements are required for street, detention, sidewalk, drainage, restoration, erosion controls, water quality ponds [LDC 25-1-112]. Remember to include fiscal for sidewalks located next to greenbelts, open spaces, landscape areas, drainage easements, etc. WQ1 to WQ3: CLEARED U1: Pending fiscal. WQ5 to WQ6: CLEARED END OF REPORT B-1327 of 27