13 SP-88-0052CX(R4) - LISD ES No. 19 Grandview Hills Ancillary Building Project; District 10 - Staff Report

Zoning and Platting Commission – Aug. 19, 2025

13 SP-88-0052CX(R4) - LISD ES No. 19 Grandview Hills Ancillary Building Project; District 10 - Staff Report — original pdf

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ZONING AND PLATTING COMMISSION CONDITIONAL USE PERMIT & HILL COUNTRY ROADWAY SITE PLAN REVIEW SHEET CASE NUMBER: SP-88-0052CX(R4) MEETING DATE: August 19, 2025 PROJECT NAME: LISD ES No. 19 Grandview Hills Ancillary Building Project ADDRESS: 12024 Vista Parke Drive DISTRICT: 10 WATERSHED: Lake Travis (Water Supply Rural) AREA: 3.26 acres limits of construction APPLICANT: Leander Independent School District PO BOX 218 Leander, TX 78646 Jeremy Trimble, 512-974-7604 AGENT: Micaela Riggs, EIT AtkinsRéalis (512) 342-3212 CASE MANAGER: Meg Greenfield, (512) 978-4663, meg.greenfield@austintexas.gov EXISTING ZONING: (P) Public & R&D-PDA PROPOSED USE: The Grandview Hills Elementary School site is 40.275 acres owned by Leander Independent School District (LISD). The existing site currently has an elementary school, agricultural barn, and ancillary buildings that enable access for students across the district. The proposed development is 3.26 acres of staff and bus parking and a fuel system. Additional improvements include installing a new storm drain network, upsizing the existing onsite storm drain network downstream of the new connection, and expanding the detention, sedimentation and filtration basins. Note on the R&D-PDA: Per 25-2-602 uses permitted in a research and development (R&D) district are established by the zoning ordinance establishing the district. Not seeing any use limitations in the ordinance or ‘zoning site plan’ in the zoning files, the educational facilities use is acceptable. Related Cases: C14R-87-159(HC), C14-00-2055. Leander ISD purchased this parcel from Vista Chemical Company in 2006. COMMISSION REQUEST: This site is zoned P (Public) and is greater than one acre in size; therefore, a Conditional Use Permit is required, according to the Land Development Code (Section 25-2-625). The site is located within the Moderate Intensity Zone of the RM 620 Hill Country Roadway Corridor, and must be presented to the Zoning and Platting Commission for approval, a Hill Country Roadway Ordinance requirement. The proposed site plan is in compliance with 25-2, Subchapter C, Article 11. 13 SP-88-0052CX(R4) - LISD ES No. 19 Grandview Hills Ancillary Building Project; District 101 of 43SUMMARY STAFF RECOMMENDATION: Staff recommends approval of this site plan. LEGAL DESCRIPTION: LOT 1 BLK D THE PARKE PHASE B PROJECT INFORMATION: AREA: 40.28 acres site EXIST. ZONING: P (Public) & R&D-PDA PROPOSED BLDG. CVRG: 13.11% PROPOSED IMPERVIOUS CVRG: 30.67% PROVIDED PARKING: 114 ZONING OVERLAYS: Hill Country Roadways Overlay: RM 620/MODERATE INTENSITY Wildland Urban Interface: Proximity Class – undefined SUMMARY COMMENTS ON SITE PLAN: A final update is expected to clear outstanding comments. The site development permit will not be issued until all reviews are approved. SURROUNDING CONDITIONS: North: Vacant (GO-CO) East: Commercial (CS-CO) West: Vacant (I-RR) South: Multifamily (SF-6 & I-RR) NEIGHBORHOOD ORGANIZATION: Friends of Austin Neighborhoods Leander ISD Population and Survey Analysts TNR BCP - Travis County Natural Resources 13 SP-88-0052CX(R4) - LISD ES No. 19 Grandview Hills Ancillary Building Project; District 102 of 43 Property Profile Zoning Map Legend Property Jurisdiction FULL PURPOSE Appraisal Districts TCAD Parcels Jurisdictions Fill Jurisdiction FULL PURPOSE Zoning 1 Zoning CS DR GO GR LO MF P R&D RR SF Zoning Text Notes 0 1000 2000 ft 8/13/2025 This product is for informational purposes and may not have been prepared for or be suitable for legal, engineering, or surveying purposes. It does not represent an on-the-ground survey. This product has been produced by the City of Austin for the sole purpose of geographic reference. No warranty is made by the City of Austin regarding specific accuracy or completeness. 13 SP-88-0052CX(R4) - LISD ES No. 19 Grandview Hills Ancillary Building Project; District 103 of 43Engineer’s Summary Grandview Hills Ancillary Building Improvement Project 12024 Vista Parke Dr. Austin, Tx, 78726 The Grandview Hills Elementary School site is 40.275 acres owned by Leander Independent School District (LISD). The existing site currently has an elementary school, agricultural barn, and ancillary buildings that enable access for students across the district. The site is located in the Lake Travis and Bull Creek Watersheds. Water, fire, wastewater, and storm networks are established on site, and a majority of the site falls within the 0% - 15% slope category. The proposed development is 3.26 acres of staff and bus parking and a fuel system. Additional improvements include installing a new storm drain network, upsizing the existing, onsite storm drain network downstream of the new connection, expansion to the detention, sedimentation and filtration basins. The proposed developments will be constructed in one phase. Storm network improvements will utilize curb inlets that connect to HDPE piping, 45- degree wyes, 45-degree bends, and manholes to convey storm runoff for the 2 year, 25 year, and 100 year storms. Piping transitions to Class III reinforced concrete prior to conveyance to the splitter box. The storm network has been designed in accordance with City of Austin’s Drainage Criteria Manual. Existing storm infrastructure will be kept in place unless upsizing is required or existing inlets along the trunk line require replacement. The south end of the site contains several drainage areas that currently discharge into two separate City storm networks: one along Woodbay Parke Drive, which carries runoff northward, and another along Vista Parke Drive, which channels runoff southward. Currently, 2.40 acres of the site contribute to the storm infrastructure along Woodbay Parke Drive. Post-construction, this contribution will be reduced to 1.21 acres. Similarly, the area contributing to the Vista Parke Drive network will decrease from 3.79 acres to 3.16 acres. This reduction in runoff to the City networks is achieved by capturing and redirecting the stormwater onsite. The collected runoff will be conveyed to the north, where it will be managed by a detention and water quality pond. An existing detention and water quality pond will be enlarged to accommodate the increased flows resulting from additional impervious cover. 13 SP-88-0052CX(R4) - LISD ES No. 19 Grandview Hills Ancillary Building Project; District 104 of 43 We are requesting a variance from the City’s requirement for new water quality treatment to use Green Storm Water Quality Infrastructure (GSI). Instead, we propose expanding the existing water quality pond (sedimentation and filtration basin) to provide treatment for all proposed site improvements. The primary reason for this request is the presence of a fueling area on-site, and the frequent presence of fuel tanker trucks refilling the tanks. If a spill were to happen, whether at the fuel tank, or at another location on-site spilling from a truck, the water quality pond will be much more capable than GSI to contain the pollutants. The gate valve at the water quality pond's discharge point can simply be turned off. GSI, such as rain gardens or bio-filtration, would likely need to be replaced in the event of a spill and would not provide adequate containment. Additionally, the site already has a well-established stormwater network, including conveyance pipes and detention/water quality ponds, making the expansion of the existing infrastructure the most feasible and lowest-impact solution. Leander Independent School District (LISD) maintains its own water quality systems and prefers to expand the existing pond for maintenance and cost purposes. Finally, the presence of several karst features on the site presents challenges to localized GSI solutions. The most practical way to manage runoff from the proposed improved areas is to convey it through the existing storm network to the existing water quality pond. The water quality pond has been designed in accordance to ECM 1.6.5 and will effectively treat the runoff. The existing storm network at the north end of the site, feeding into the existing splitter box currently does not currently meet the minimum cover requirements or horizontal separation distances to existing grate inlets along the trunk line. It is assumed that the City granted a waiver for the minimum coverage and minimum horizontal separation requirements. The existing network consists of a 24” HDPE pipe, approved in the 2007 revision 2. The area in question is a grassy infield that does not receive any vehicular traffic flow. To mitigate the flow increase, the existing 24” HDPE pipe will be replaced with a 42” Class III concrete reinforced pipe. The design has attempted to maximize coverage and separation where possible. However, due to the increase in pipe size, there will be an area close to the existing splitter box that will have a minimum of 1.0’ of cover and 0.5’ horizontal separation distance. We ask that the city waive the minimum coverage and minimum horizontal separation distance. The proposed 42” pipe will replace the existing 24” pipe that runs under an existing ditch that collects and conveys water to the pond. An attempt to meet coverage requirements or relocate inlets would impact several drainage areas, the existing playfields, and overall conveyance of the storm network serving the northern pond making it unfeasible. We are submitting a waiver for the Environmental Inventory Resource (ERI) form. LISD has invested in a Phase I and Phase II environmental assessment and any subsequent investigations requested by the city since the inception of Grandview Hills Elementary. All documents have been submitted to the city for review and approval. The findings of these environmental documents have been incorporated into designs that have been done thereafter (the agricultural barn in 2020 and the current improvements being proposed). An Environmental Resource Inventory form would be an additional cost that would impact 13 SP-88-0052CX(R4) - LISD ES No. 19 Grandview Hills Ancillary Building Project; District 105 of 43 schedule and, ultimately, feasibility. All relevant information can be gathered from previously approved documents that was submitted to the city in earlier permitting processes. Additionally, please note that the submitted plan set has an additional cover sheet with information related to revision 4. This was done at the request of the City to avoid cluttering the existing cover sheet with more information, making it more accessible reviewers. Sincerely, Michael Shangreaux, P.E. 13 SP-88-0052CX(R4) - LISD ES No. 19 Grandview Hills Ancillary Building Project; District 106 of 43 VAN VIS T A P A R K E D RIV E WILSON PARKE AVENUE E RIV E D K R A Y P A B D O O W 0 40 80 160 SCALE: 1" = 80' A B C D E F 0 0 5 E T U S I , D R A V E L U O B N A M O D 1 0 8 1 1 I 0 4 8 6 - 7 2 3 ) 2 1 5 ( - 8 5 7 8 7 S A X E T , I N T S U A 4 7 4 - F . O N . G E R E P B T I N A L P E T S L L A R E V O 5 2 0 2 / 3 0 / 7 0 S L L I H W E V D N A R G I - D S I L T C E J O R P Y R A L L I C N A 130 175 13 SP-88-0052CX(R4) - LISD ES No. 19 Grandview Hills Ancillary Building Project; District 107 of 43 0 10' 20' 40' SCALE: 1" = 20' M A T C H L N E I - S E E S H E E 1 T 3 4 I S L L H W E V D N A R G I - D S I L MATCHLINE - SEE SHEET 132 0 0 5 E T U S I , D R A V E L U O B N A M O D 1 0 8 1 1 I 0 4 8 6 - 7 2 3 ) 2 1 5 ( - 8 5 7 8 7 S A X E T , I N T S U A 4 7 4 - F . O N . G E R E P B T 6 F O 1 N A L P E T S I 5 2 0 2 / 3 0 / 7 0 T C E J O R P Y R A L L I C N A 131 175 13 SP-88-0052CX(R4) - LISD ES No. 19 Grandview Hills Ancillary Building Project; District 108 of 43 MATCHLINE - SEE SHEET 131 0 10' 20' 40' SCALE: 1" = 20' M A T C H L I N E - S E E S H E E 1 T 3 3 0 0 5 E T U S I , D R A V E L U O B N A M O D 1 0 8 1 1 I 0 4 8 6 - 7 2 3 ) 2 1 5 ( - 8 5 7 8 7 S A X E T , I N T S U A 4 7 4 - F . O N . G E R E P B T 6 F O 2 N A L P E T S I 5 2 0 2 / 3 0 / 7 0 S L L I H W E V D N A R G I - D S I L T C E J O R P Y R A L L I C N A 132 175 13 SP-88-0052CX(R4) - LISD ES No. 19 Grandview Hills Ancillary Building Project; District 109 of 43 MATCHLINE - SEE SHEET 134 0 10' 20' 40' SCALE: 1" = 20' 2 3 T 1 E E H S E E S - E N I L H C T A M 0 0 5 E T U S I , D R A V E L U O B N A M O D 1 0 8 1 1 I 0 4 8 6 - 7 2 3 ) 2 1 5 ( - 8 5 7 8 7 S A X E T , I N T S U A 4 7 4 - F . O N . G E R E P B T 6 F O 3 N A L P E T S I 5 2 0 2 / 3 0 / 7 0 S L L I H W E V D N A R G I - D S I L T C E J O R P Y R A L L I C N A 133 175 13 SP-88-0052CX(R4) - LISD ES No. 19 Grandview Hills Ancillary Building Project; District 1010 of 43 MATCHLINE - SEE SHEET 135 0 10' 20' 40' SCALE: 1" = 20' 1 3 T 1 E E H S E E S - E N I L H C T A M MATCHLINE - SEE SHEET 133 0 0 5 E T U S I , D R A V E L U O B N A M O D 1 0 8 1 1 I 0 4 8 6 - 7 2 3 ) 2 1 5 ( - 8 5 7 8 7 S A X E T , I N T S U A 4 7 4 - F . O N . G E R E P B T 6 F O 4 N A L P E T S I 5 2 0 2 / 3 0 / 7 0 S L L I H W E V D N A R G I - D S I L T C E J O R P Y R A L L I C N A 134 175 13 SP-88-0052CX(R4) - LISD ES No. 19 Grandview Hills Ancillary Building Project; District 1011 of 43 MATCHLINE - SEE SHEET 136 0 10' 20' 40' SCALE: 1" = 20' 0 0 5 E T U S I , D R A V E L U O B N A M O D 1 0 8 1 1 I 0 4 8 6 - 7 2 3 ) 2 1 5 ( - 8 5 7 8 7 S A X E T , I N T S U A 4 7 4 - F . O N . G E R E P B T 6 F O 5 N A L P E T S I 5 2 0 2 / 3 0 / 7 0 S L L I H W E V D N A R G I - D S I L T C E J O R P Y R A L L I C N A 135 175 MATCHLINE - SEE SHEET 134 13 SP-88-0052CX(R4) - LISD ES No. 19 Grandview Hills Ancillary Building Project; District 1012 of 43 0 10' 20' 40' SCALE: 1" = 20' 0 0 5 E T U S I , D R A V E L U O B N A M O D 1 0 8 1 1 I 0 4 8 6 - 7 2 3 ) 2 1 5 ( - 8 5 7 8 7 S A X E T , I N T S U A 4 7 4 - F . O N . G E R E P B T 6 F O 6 N A L P E T S I 5 2 0 2 / 3 0 / 7 0 S L L I H W E V D N A R G I - D S I L T C E J O R P Y R A L L I C N A 136 175 MATCHLINE - SEE SHEET 135 13 SP-88-0052CX(R4) - LISD ES No. 19 Grandview Hills Ancillary Building Project; District 1013 of 43 VAN WILSON PARKE AVENUE E RIV E D K R A Y P A B D O O W A VIS T A P A R K E D RIV E 0 0 5 E T U S I , D R A V E L U O B N A M O D 1 0 8 1 1 I 0 4 8 6 - 7 2 3 ) 2 1 5 ( - 8 5 7 8 7 S A X E T , I N T S U A 4 7 4 - F . O N . G E R E P B T N A L P G N V A P I 5 2 0 2 / 3 0 / 7 0 T C E J O R P Y R A L L I C N A 137 175 I S L L H W E V D N A R G I - D S I L 13 SP-88-0052CX(R4) - LISD ES No. 19 Grandview Hills Ancillary Building Project; District 1014 of 43 This Master Comment Report includes all staff comments received to date about your most recent site plan submittal. The comments may include requirements, recommendations, or information. The requirements in this report must be addressed by an updated site plan submittal. Case Number: SP-88-0052CX(R4) Revision #: 01 Case Manager: Meg Greenfield Phone #: Update: U1 Email: meg.greenfield@austintexas.gov Project Name: LISD ES No. 19 Grandview Hills Ancillary Building Project Location: 12024 VISTA PARKE DR and 11900 Vista Parke Dr Submittal Date: July 7, 2025 Report Due Date: July 21, 2025 Final Report Date: July 23, 2025 2 DAYS HAVE BEEN ADDED TO THE UPDATE DEADLINE Update Deadline (Expiration Date): December 31, 2025 Final Update Deadline [LDC § 25-5-113]: • Failure to submit a final update by the deadline will result in the automatic denial of the application, unless: (1) The site plan application has been approved; or (2) A request for an extension has been granted. [LDC § 25-1-82(F)] • If the deadline falls on a weekend or City of Austin holiday, the next City of Austin workday will be the deadline. • The applicant or their agent is responsible for updating this site plan application and clearing all comments. Update Submittals: • A formal update submittal is required. Updates can be submitted through the Site Plan Update and Formal Web Form. Updates submitted after 3:00 p.m. may be processed on the following business day. • A written response to every comment is required in addition to the updated plan set. • More comments may be generated as a result of information or design changes provided in your update. Site Plan Approval: • The site plan will be approved when all requirements from each review discipline have been addressed. 13 SP-88-0052CX(R4) - LISD ES No. 19 Grandview Hills Ancillary Building Project; District 1015 of 43 REVIEWERS: TPW-TDS : Juan Camou Addressing : Janny Phung Environmental : Pamela Abee-Taulli Fire For Site Plan : Richard Schaffner Land Development Engineering : William Bennett AW Pipeline Engineering : Daniel Lofton Hydro Geologist : Eric Brown AW Utility Development Services : Derek Tucker Wildland Urban Interface : Kara Henderson TPW-TDS Review – Juan Camou (512) 974-6590 - juan.camou@austintexas.gov TPW 01 – Current Status: [Cleared] • U1: Comment Cleared • U0: A pedestrian parking path shall be provided for 50% of on and off-street parking and loading facilities. Reference: TCM 9.3.3.2.A. TPW 02 – Current Status: [Pending] • U1: Please see information below for each drive way. o For the southwest staff parking driveway, the width must be 20 feet. This 20-foot width shall be maintained within the first 40 feet of the driveway entrance and may be increased to 25 feet at the curvature of the driveway. o The proposed southeast bus driveway exceeds the requirements outlined in the Transportation Criteria Manual (TCM). As currently presented, it is designed as a high-capacity driveway without supporting documentation to justify the necessity, as required by TCM Section 7.4.3. Please provide trip generation data to confirm that peak traffic volumes warrant this design. If the volume does not meet the specified criteria, the driveway will not be considered for approval. Additionally, please review and incorporate all relevant design requirements (raised median) applicable to driveways of this type. • U0: Undivided two-way driveways approaches must be between 20 feet wide, measured at the property line. Show dimensions on the site plan at the property line. Please adjust driveways. Reference: TCM, Table 7-2 TPW 03 – Current Status: [Pending] • U1: Please provide the waiver request. Waiver request must show compliance with driveway width per TPW 02. For the southwest staff parking, alignment has been accepted. • U0: Sheet 129-Driveways on opposing sides of an undivided street with offsets can result in conflicting movements in and out of driveways and within the street. A.If left turning paths into driveways on opposing sides of a street cross each other (offset left), access shall be restricted to right-in, right-out, with the exception of a hooded left-turn into one driveway. B.If left turning paths into driveways on opposing streets do not cross each other (offset right), the driveways shall be located to avoid conflicting left turns out of the opposing driveways and placed a minimum of 80 ft. apart measured from the throat edge of an intersecting driveway and the throat edge of the opposite intersecting driveway. 13 SP-88-0052CX(R4) - LISD ES No. 19 Grandview Hills Ancillary Building Project; District 1016 of 43 Project Name: LISD ES No. 19 Grandview Hills Ancillary Building Project Address: 12024 VISTA PARKE DR File Number: SP-88-0052CX(R4) Waiver request can be submitted for consideration. Reference: TCM 7.6.3. TPW 04 – Current Status: [Pending] • U1: Following coordination with the Land Development Engineering team, it was determined that the proposed southeast bus driveway must be positioned at least 10 feet from the inlet. Please see TPW 02 for additional driveway requirements. • U0: Sheet 130-If a curb inlet is present, there must be 10 feet between the inlet opening and the edge of a driveway curb return. Please note the distance between curb inlets and the edge of the adjacent driveway curb returns. Reference: TCM, 7.6.2.C TPW 05 – Current Status: [Cleared] • U1: Comment Cleared. • U0:Sheet 130-For multifamily or commercial sites with 25-100 parking spaces, minimum throat storage length is 25’ or 40’ min. If left turns are permitted. Reference: TCM, Table 9-5 TPW 06 – Current Status: [Pending] • U1: Pending. Please show compliance with TPW 02. • U0: Sheet 130-The curb return radii must be between 15 feet. Dimension the driveway curb return radii on site plan. Reference: TCM, Table 7-1 Addressing Review – Janny Phung janny.phung@austintexas.gov AD 1 – Current Status: Pending • Please update all incorrect street name labels including the following: 1. VISTA PARKE DR 2. WOODBAY PARKE DR Active streets and address points can be viewed on Property Profile. Please label what is shown. These street names are shown exactly as such in the 911 system. Please schedule a meeting if you have questions. Reference: https://maps.austintexas.gov/GIS/PropertyProfile/ • https://www04.timetrade.com/app/cityofaustin/workflows/coashowres1/schedule?locationId= ctm_a&appointmentTypeGroupId=sc_ctma_aspssq_v&appointmentTypeId=at_spspsq15_ 13 SP-88-0052CX(R4) - LISD ES No. 19 Grandview Hills Ancillary Building Project; District 1017 of 43 Project Name: Grandview Hills Elementary Bus Parking Address: 12024 VISTA PARKE DR File Number: SP-88-0052CX(R4) v&resourceId=janny.phung@austintexas.gov Drainage Engineering Review – Jennifer Reynolds, P.E. jennifer.reynolds@austintexas.gov DE 1 – Current Status: CLEARED • U1: Per meetings with hydrogeologist review, the final design meets DCM regulations. • U0: Based on discussions with the hydrogeologist reviewer, the storm sewer labeled “SD1- P13” will not be allowed in this area. Comment will remain open until the final design is determined. Environmental Review – Pamela Abee-Taulli (512) 974-1879 - pamela.abee-taulli@austintexas.gov U1 7/16/2025 This plan has been reviewed per Ordinance 20240718-108, the LISD Land Development Agreement. ENDANGERED SPECIES EV 1 – Current Status: Pending • U1: The Travis County BCCP email address in the email that was sent has a dot between traviscounty & tx that should not be there. Also, it appears that their application might be online now. Please check out https://www.traviscountytx.gov/tnr/nr/contact, if you haven’t already. The site is in Travis Co., so please disregard the Hays Co. contact. I wasn’t sure which emails were successful. Would you please send, or upload with the next update, the responses from the ones you were able to contact? Thank you. 13 SP-88-0052CX(R4) - LISD ES No. 19 Grandview Hills Ancillary Building Project; District 1018 of 43 Project Name: LISD ES No. 19 Grandview Hills Ancillary Building Project Address: 12024 VISTA PARKE DR File Number: SP-88-0052CX(R4) • U0: According to COA GIS, this site is located within the endangered species area. I see that the BCCP was notified in 2006. Please notify the following individuals again via email of the proposed development and cc this EV reviewer: Travis County: BCCP@traviscountytx.gov US Fish and Wildlife: FW2_AUES_Consult@fws.gov Kimberlee Harvey at BCCP: kimberlee.harvey@austintexas.gov Hays County: alexandra.thompson@co.hays.tx.us COVER SHEET NOTES EV 2 – Current Status: Cleared • U0: The statement in cover sheet note #3 is broader than is correct. Cite the documents with the regulations that do apply, such as the LISD Agreement. EV 3 – Current Status: Cleared • U0: Revise the watershed note to state: “This project is located in the Lake Travis Watershed, which is classified as a Water Supply Rural Watershed.” EV 4 – Current Status: Cleared • U0: Add a note to the cover sheet stating: “This site is located over the North Edwards Aquifer Recharge Zone.” EV 5 – Current Status: Cleared • U0: Add a note to the cover sheet stating: “This project is subject to the Void and Water Flow Mitigation Rule (COA ECM 1.12.0 and COA Item No. 658S of the SSM) provision that all trenching greater than 5 feet deep must be inspected by a geologist (Texas P.G.) or a geologist’s representative.” EV 6 – Current Status: Cleared • U0: Add the following note to the plan set coversheet: “If at any time during construction of this project an underground storage tank (UST) is found, construction in that area must stop until a City of Austin UST Construction Permit is applied for and approved. Any UST removal work must be conducted by a UST Contractor that is registered with the Texas Commission on Environmental Quality (TCEQ). Contact UST@austintexas.gov if you have any questions. [COA Title 6]” IMPERVIOUS COVER COMMENTS EV 7 – Current Status: Cleared • U0: (Sh. 105) The Q1 table is for calculating net site area. Existing and proposed impervious cover is shown on the Q2 table. Remove the indicated lines of the Q1 table. 13 SP-88-0052CX(R4) - LISD ES No. 19 Grandview Hills Ancillary Building Project; District 1019 of 43 Project Name: LISD ES No. 19 Grandview Hills Ancillary Building Project Address: 12024 VISTA PARKE DR File Number: SP-88-0052CX(R4) EV 8 – Current Status: Pending • U1: In a Water Supply Rural watershed, IC is based on net site area. Please make this correction on the Q2 table. • U0: Provide the current Drinking Water Protection Zone Q2 table. [LDC 25-8-62, ECM Appendices Q-1 and Q-2] In line 3, show that IC is allowed at 50%. Add note adjacent to the table: THE IMPERVIOUS COVER ALLOWANCE IS STATED IN THE LISD AGREEMENT. EV 9 – Current Status: Cleared • U0: Specify in the comment response letter if any pervious driveway(s) or pervious walkway(s) are proposed. Additional review and comment may be pending. This information is being specifically requested to help facilitate faster and more accurate reviews. [LDC 25-8-63(C)(9 & 10); ECM 1.6.9.2.E] GRADING AND SLOPES EV 10 – Current Status: Cleared • U0: Provide an exhibit showing: • NO COLOR FOR GRADING LESS THAN 4 FEET 13 SP-88-0052CX(R4) - LISD ES No. 19 Grandview Hills Ancillary Building Project; District 1020 of 43 Project Name: LISD ES No. 19 Grandview Hills Ancillary Building Project Address: 12024 VISTA PARKE DR File Number: SP-88-0052CX(R4) • Cut over 4 feet; • Fill over 4 feet; • Site plan footprint; • Pond footprint(s); • ROW lines; • NO COLOR FOR SLOPES LESS THAN 15% • Slopes from 15% to 25%; • Slopes over 25%; and • Classified waterway centerline(s). This information is necessary to assess compliance with grading limits and construction on slopes limits per LDC 25-8-301, 302, 341, and 342. DEMOLITION SHEET EV 11 – Current Status: Cleared • U0: Add a note to the demolition plan stating: “A preconstruction meeting with the Environmental Inspector is required prior to any site disturbance.” EV 12 – Current Status: Cleared • U0: Include all demolition areas in the ESC plan, or alternatively, provide a separate ESC plan for demolition. ESC REQUIREMENTS [LDC 25-7-61,65, 25-8-181,182,183,184] NOTES EV 13 – Current Status: Cleared • U0: Remove note #4 (sh. 105) regarding the City of Leander Environmental Inspector. Alternatively, cite the reference from the PDA or LISD Agreement that states this. EV 14 – Current Status: Cleared • U0: Add the following notes to all ESC sheets: City of Austin Environmental Inspector has the authority to add and/or modify erosion/sedimentation controls on site to keep project in compliance with the City of Austin Rules and Regulations [LDC 25-8-182] Per LDC 25-8-323(C), for areas on the site that are to remain pervious after development, any soils that are compacted during site grading and construction operations must be decompacted in compliance with the ECM and in compliance with SSM 661S. All disturbed areas to be revegetated are required to have a minimum of six (6) inches of topsoil. Topsoil shall meet the definition in Standard Specification 601S.3. In areas where no topsoil exists, or where topsoil is needed for vegetative establishment, the subgrade shall be loosened by discing or scarifying to a depth of at least two (2) inches prior to placement of six (6) inches of topsoil. [ECM 1.4.7, Appendix P-1] Permanent vegetative stabilization of areas disturbed by construction shall be per ECM Appendix P-1, unless otherwise indicated on the plan. PLAN GRAPHICS EV 15 – Current Status: Cleared 13 SP-88-0052CX(R4) - LISD ES No. 19 Grandview Hills Ancillary Building Project; District 1021 of 43 Project Name: LISD ES No. 19 Grandview Hills Ancillary Building Project Address: 12024 VISTA PARKE DR File Number: SP-88-0052CX(R4) • U0: Hatch all proposed areas to be revegetated that exceed a final grade of 2:1. Additionally, either provide erosion control matting on the slopes or 18” mulch sock at the top and base of the slopes to prevent runoff and sediment transport until permanent vegetative stabilization has grown to a minimum 1.5 inches and there are no bare spots greater than 10 square feet. [ECM 1.4.4.B.1, 1.4.5.F, 1.4.7.B, ECM Appendix P-1] EV 16 – Current Status: Cleared • U0: Due to site characteristics, a standard stabilized construction entrance may not be appropriate. On the ESC sheet, the standard stabilized construction entrance may be replaced with a sediment removal mat at grade. Be sure to provide a sediment removal mat detail in the plan set. Additional review and comments may be pending. [ECM 1.4.5.N] EV 17 – Current Status: Cleared • U0: Show all offsite utility lines on the ESC and grading sheets. These offsite utility lines must be included in the LOC and ESC must be provided for these utility lines. [ECM 1.4.2.B, ECM 3.3.2 (C)] EV 18 – Current Status: Pending • U1: I see now that it is shown. Please use a wider or heavier line symbol so that it is easier to see. Thank you. • U0: Show the LOC in the plan set. EV 19 – Current Status: Cleared • U0: Be sure that if the LOC has separate sections, each section, including the pond, is accessible from a stabilized entrance, has a temporary spoils and staging area, and has a concrete washout, if appropriate. EV 20 – Current Status: Cleared • U0: The staging areas and concrete washouts should be in a location that is free of trees. SEDIMENT CAPTURE EV 21 – Current Status: Cleared • U0: Item number 4 of the ECM Appendix P-4 sequence of construction requires rough grading ponds to 100% capacity prior to site clearing / demo activities. This is necessary so that the rough graded pond(s) can provide sedimentation control during construction activities. In the comment response letter, please confirm that the ponds will indeed be rough graded to 100% capacity prior to site clearing / demo activities. If this is infeasible, the sequence of construction notes provided on the plan set must be edited and other erosion / sedimentation control techniques will be necessary (i.e., more silt fence / TFD / mulch socks, construction staging, etc). EV 22 – Current Status: Pending • U1: A rough-graded pond is not allowed to discharge directly. It must have a way to remove sediment before discharging the water. The skimmer takes sediment-free water from the pond surface and sends it out the pond outlet. If I am not understanding exactly what is proposed for the ponds, please explain in the comment response, or contact me for a quick meeting. • U0: Clarify how the ponds will be dewatered during construction. If a sump pump will be used, show it on the plan and provide a detail. Clearly show how the outlet system will be 13 SP-88-0052CX(R4) - LISD ES No. 19 Grandview Hills Ancillary Building Project; District 1022 of 43 Project Name: LISD ES No. 19 Grandview Hills Ancillary Building Project Address: 12024 VISTA PARKE DR File Number: SP-88-0052CX(R4) protected from erosion. If a dewatering skimmer will be designed to dewater at the surface, show the location and provide ECM Figure 1.4.5.K.1 in the plan set. DETAILS EV 23 – Current Status: Cleared • U0: Add the following detail(s) to the plan set: • Sediment removal mat, if appropriate [LDC 25-8-181, LDC 25-8-604, ECM 3.5.2, ECM 1.4.1.1(C)] Biolfiltration EV 24 – Current Status: Cleared • U0: This comment applies if an part of the pond will use biofiltration. Per ECM 1.6.7.5.C, the following apply to biofiltration vegetation: • Approved plants can be found at: https://www.austintexas.gov/department/grow- green/plant-guide • No one species should comprise more than 20% of the total area of the basin; a minimum of 5 species must be planted. • Vegetation may comprise shrubs, perennials, bunchgrasses, succulents, groundcovers or turf. • Annuals are not permitted. • Small trees are do not count towards the minimum species requirement. • The proposed vegetation must be diverse, appropriately distributed, and spaced according to the mature size of the particular plants. • Plants referenced in ECM Tables 1.6.7.C-2 and 1.6.7.C-3 are not allowed. Provide a planting plan for the biofiltration pond that complies with the above requirements. LANDSCAPE REQUIREMENTS The Landscape Plan should be compliant with Exhibit A of the LISD Agreement. The small print is illegible in the uploaded document. However, it is clear that there are requirements for street yard, parking lot trees, irrigation, and plants or berms along the edges of a water quality pond. This review looked at these items. PLAN GRAPHICS EV 25 – Current Status: Cleared • U0: Correct the scale bar on the landscape plan sheets. PARKING LOT EV 26 – Current Status: Cleared • U0: Explain why no parking trees are provided for the east parking lot. If this is for busses, trees are still required. It appears that existing trees could be preserved in the parking medians. I would encourage placement of the medians to maximize preservation of the large trees and clusters of trees, even if that results in some parking spaces that are more than 50 feet from a tree. For example, one or parts of the clusters indicated below could be preserved in a large island. That would replace a roughly equivalent area of the currently proposed islands. 13 SP-88-0052CX(R4) - LISD ES No. 19 Grandview Hills Ancillary Building Project; District 1023 of 43 Project Name: LISD ES No. 19 Grandview Hills Ancillary Building Project Address: 12024 VISTA PARKE DR File Number: SP-88-0052CX(R4) FEES [LDC 25-1-82, 25-7-65, 25-8-234] EV 27 – Current Status: Pending • U1: Pending • U0: Payment of the site plan environmental inspection fee is required prior to permit/site plan approval. To obtain invoice and get payment instructions, contact Intake at LURIntake@austintexas.gov or 512-974-1770. EV Review will be approved prior to payment of this fee. However, the applicant is advised that the permit issuance will not occur until this fee has been paid. EV 28 – Current Status: Pending • U1: Pending • U0: Payment of the landscape inspection fee is required prior to permit/site plan approval. To obtain invoice and get payment instructions, contact Intake at LURIntake@austintexas.gov or 512-974-1770. EV Review may be approved prior to payment of this fee. However, the applicant is advised that the permit issuance will not occur until this fee has been paid. Fire For Site Plan Review – Richard Schaffner (512) 974-0159 - richard.schaffner@austintexas.gov FR1 - CURRENT STATUS: Pending • UPDATE U1: The following items in the table are incorrect, please see the codes and tables referenced in the example table below in original U0 comment and revise accordingly. Location should match upper left hand corner of flow test map page. 13 SP-88-0052CX(R4) - LISD ES No. 19 Grandview Hills Ancillary Building Project; District 1024 of 43 Project Name: LISD ES No. 19 Grandview Hills Ancillary Building Project Address: 12024 VISTA PARKE DR File Number: SP-88-0052CX(R4) • UPDATE U0: Sheet 94 - Provide the project information table shown below on the Revision 4 project cover sheet. Provide the items in the lefthand column exactly as shown below, do not edit the text, add, or delete items. Provide appropriate answers in the righthand column for each item or NA if it does not apply to your project. The righthand column in the table below will guide you to the related code sections so you can determine the appropriate answer to the corresponding item in the lefthand column of the table. If you have any questions about an item, please contact your reviewer for assistance. Fire Design Codes Fire Flow Demand @ 20 psi (gpm) Occupancy Classification Construction Classification Building Fire Area (s.f.) Automatic Fire Sprinkler System Type (If applicable) Reduced Fire Flow Demand @ 20 psi for having a sprinkler system (gpm) (If applicable) Austin Fire Department 2021 International Fire Code (IFC) with City of Austin local amendments to the IFC Calculated fire-flow demand of the most demanding building on the site. Reference 2021 IFC, Appendix B, table B105.1(2) for commercial buildings and table B105.1(1) for Townhouse/Townhomes/Condominiums, One and two family dwellings, group R-3 and group R-4 buildings. What is the occupancy classification per the 2021 International Building Code (IBC) for the most demanding building, B, Business, E, Educational, R-2, Multi-Family Residential, etc.? 2021 International Building Code (IBC) construction classification of the building with the greatest fire-flow demand (e.g., type IA, type V-B, etc.) Fire area in gross square feet (all floor levels combined) of the most demanding building on the site per 2021 IFC Appendix B, section B104. The type of fire sprinkler system that is to be installed in the most demanding building (e.g., NFPA 13, NFPA 13R or NFPA 13D) Be advised that after reductions the minimum fire-flow demand allowed for an NFPA 13 fire sprinkler system is 1,000 gpm. After reductions the minimum fire-flow demand allowed for an NFPA 13R fire sprinkler system is 1,500 gpm. Reference Table B105.2 of the 2021 IFC. For NFPA 13D systems, for fire areas/building area 0-3600 sq ft the min required fire flow after reductions is 500gpm for fire areas/building areas 3601 sq ft or greater it is ½ of the value shown in table B105.1(2) – Reference table B105.1(1). AFD Fire Hydrant Flow Test Date Test Report date cannot be older than 1 year from the date of AFD Fire Hydrant Flow Test Location City of Austin Pipeline Ordinance Applies to Project site plan submittal to the COA Block Number and Street Name Yes or No 13 SP-88-0052CX(R4) - LISD ES No. 19 Grandview Hills Ancillary Building Project; District 1025 of 43 Project Name: LISD ES No. 19 Grandview Hills Ancillary Building Project Address: 12024 VISTA PARKE DR File Number: SP-88-0052CX(R4) High-Rise International Wildland-Urban Interface Code Alternative Method of Compliance AMOC (If applicable) Yes or No Either N/A or 2015 Wildland-Urban Interface Code (IWUIC) with City of Austin Local Amendments AMOC number and the date the AMOC was approved by the city. Or N/A Reference: 2021 IFC Section 507 FR2 - CURRENT STATUS: Cleared • UPDATE U0: Provide or revise the “Fire Department Notes” in the general notes section to quote the (6) standard & required notes exactly as shown below, do not add any other additional notes. 1. The Austin Fire Department requires final asphalt or concrete pavement on required access roads prior to the start of combustible construction. Any other method of providing “all-weather driving capabilities” shall be required to be documented and approved as an alternative method of construction in accordance with applicable rules for temporary roads outlined in the City of Austin Fire Protection Criteria Manual. 2. Fire hydrants shall be installed with the center of the four (4) inch opening (steamer) located at least 18 inches above finished grade. The steamer opening of fire hydrants shall face the approved fire access driveway or public street and set back from the curb line(s) an approved distance, typically three (3) to six (6) feet. The area within three (3) feet in all directions from any fire hydrant shall be free of obstructions, and the area between the steamer opening and the street or driveway giving emergency vehicle access shall be free of obstructions. 3. Timing of installations: When fire protection facilities are installed by the contractor, such facilities shall include surface access roads. Emergency access roads or drives shall be installed and made serviceable prior to and during the time of construction. When the Fire Department approves an alternate method of protection, this requirement may be modified as documented in the approval of the alternate method. 4. All emergency access roadways and fire lanes, including pervious/decorative paving, shall be engineered and installed as required to support the axle loads of emergency vehicles. A load capacity sufficient to meet the requirements for HS-20 loading (16kips/wheel) and a total vehicle live load of 80,000 pounds is considered compliant with this requirement. 5. Fire lanes designated on site plans shall be registered with the City of Austin Fire Department and inspected for final approval. 6. The minimum vertical clearance required for emergency vehicles access roads or drives is 14 feet for the full width of the roadway or driveway. Reference: City of Austin Fire Criteria Manual sections, 501.3, 503 & 507 FR3 - CURRENT STATUS: Pending • UPDATE U1: Put both pages of the fire flow test “in” the site plan site, they are required to be “in” the site plan set. 13 SP-88-0052CX(R4) - LISD ES No. 19 Grandview Hills Ancillary Building Project; District 1026 of 43 Project Name: LISD ES No. 19 Grandview Hills Ancillary Building Project Address: 12024 VISTA PARKE DR File Number: SP-88-0052CX(R4) • UPDATE U0: An AFD flow test that is 1yr old or less must be obtained and both pages submitted to demonstrate the available water supply for the project can meet the fire flow demand for the site. Impacts to the Austin Water Utility’s (AWU) piping system due to providing the required fire flow for a development project are evaluated by and resolved through the staff of AWU. If there are on-site mains and hydrants, calculations must be provided to prove that the fire flow can be delivered through the private water system. The maximum velocity permitted in private or public fire mains is 10 feet/second. Go to AFD website at the following web address, scroll down and click the http://www.austintexas.gov/department/fire-prevention-fire-marshals-office Scroll down under “Services” and click the “Fire Hydrant Flow Request” link. Reference: 2021 IFC Section 507.4. FR4 - CURRENT STATUS: Pending • UPDATE U1: Site Plans, note 3 per your response to comments does not address the re- paining of fire lanes, it is note 5, however the site plans are incorrectly referencing note 4, please revise/fix the references. Additionally, U0 comment could not be verified, see comment FR13 for more information. • UPDATE U0: Site Plans – Clearly show the location of “all” Exiting and Proposed Fire Lanes on the site - Fire Department access roads shall be provided within 150ft of all exterior points of a non-sprinkled building and 200ft of a sprinkled building. AFD requires a minimum access width of 5ft clear on a stable and reasonably level walking surface to accommodate responding firefighters, carrying equipment, hose bundles, ladders, wearing Scott air packs etc… so they have enough room to perform firefighting or rescue operations. NOTE: Warehouses over 12,000 sq. ft., the 2021 IFC 3206.6 limits the distance to 150 ft for high-piled storage over 12,000 sq. ft. The access cannot be from an adjacent property unless there is either a Unified Development Agreement (UDA) or a Joint Use Access Easement (JUAE) between the two properties that legally binds this access together between the properties in perpetuity. Provide copies of the “recorded” UDA or JUAE for review by AFD and clearly identify there is UDA on the plans including its County document record number or callout the JUAE on the plans and clearly show the JUAE boundaries of the on the plans and callout the associated County document record number on the plans. The 150/200ft distance is measured as approved hose lay distance at the ground level and must be measured around any obstructions. The distance cannot be measured under or through the building or through detention/water quality ponds, rain gardens, drainage ways etc… Sprinkled and rated breezeways are generally an exception to this rule. Fences and 13 SP-88-0052CX(R4) - LISD ES No. 19 Grandview Hills Ancillary Building Project; District 1027 of 43 Project Name: LISD ES No. 19 Grandview Hills Ancillary Building Project Address: 12024 VISTA PARKE DR File Number: SP-88-0052CX(R4) walls less than 4 ft in height are usually not considered obstructions. Typical fences will create an obstruction problem. A gate can be installed in a fence to mitigate an access problem, as long as the fire dept can open the gate, provide knox key boxes at gates as needed. Reference: 2021 IFC Section 503.1.1 as amended by the City of Austin. FR5 - CURRENT STATUS: Cleared • UPDATE U0: Mark/Identify all fire lanes on the site using a specific line type to denote fire lane markings. Fire Zones or Fire Lanes shall be marked along the edges of the Fire Department access roads on the Site Plan drawing. City of Austin Amendments to IFC 503.3.3.2. Provide the following note on the Site Plan Sheet: Stencil the words “FIRE ZONE/TOW-AWAY ZONE” in white letters at least 3” high at 35foot intervals along the curb and the entire curb shall be painted red to serve as the background for the white letters.” Signs stating “FIRE ZONE/TOW-AWAY ZONE” shall be posted at both ends of a fire zone and at each entry and exit point which constitutes a portion of the fire zone or fire lane. Signs shall comply with Standard City of Austin Detail 901S-6. Callout the location of the required signs on the Site Plan and provide the standard COA detail 901S-6 and a detail for the fire lane markings in the details sheets for these items. In addition, the owner shall cause signs to be posted at both ends of a fire zone or fire lane and at each entry and exit point which constitutes a portion of the fire zone or fire lane Reference: 2021 IFC 503.3.2 as amended by the City of Austin. FR6 – CURRENT STATUS: Pending • UPDATE U1: Site Plans - Gates across Fire Department Access Roads – Using callouts or keynotes, clearly identify all gates across fire lanes as either motorized gates or manual gates on all site plans, dimension control plans and fire protection plans. Provide the following notes on every plan that shows calls out the gates across fire lanes and callout the location of the required Knox Key Switch or Knox Key Box per the notes below. “Provide a Knox Key Switch at all power operated gates and a Knox Key Box at all manual gates across fire access roads for fire department access, this shall be located on the ingress side of the gate.” “All gates across fire access roads shall open the full width of the fire access road so the fire access road is not obstructed in anyway by the gate or any of the gate components.” “All power operated gates across fire access roads shall be equipped with gate operators listed in accordance with UL 325. Gates intended for automatic operation shall be designed, constructed, and installed per ASTM F2200. A manual means of opening the gate in the event of power loss is required.” Reference: 2021 IFC Section 503.6 • 13 SP-88-0052CX(R4) - LISD ES No. 19 Grandview Hills Ancillary Building Project; District 1028 of 43 Project Name: LISD ES No. 19 Grandview Hills Ancillary Building Project Address: 12024 VISTA PARKE DR File Number: SP-88-0052CX(R4) • UPDATE U0: Site Plans – clarify – are there gates across any of the fire lanes? If Yes clearly identify these locations using callouts and identify in the callout if the gate is manual or motorized. FR7 – CURRENT STATUS: Cleared • UPDATE U0: Site Plans – clarify – provide a callout with a leader or keynote with a leader for each Above Ground Fuel Tank, that provides the following information for the fuel tank: It’s an Above Ground Fuel Tank, the type of fuel, the capacity of the tank in gallons and the UL listing on the Tank, it will be either UL 142 or UL 2085. o This is required to be shown on all site plans that have Aboveground Fuel Tanks on them. NOTE: for underground tanks, you only need to indicate it’s an Underground Fuel Tank in the callout. FR8 – CURRENT STATUS: Cleared • UPDATE U0: Provide “all” the sheets shown in the drawing index table on sheet 94 for the revision 4 plan set, sheets 142-171 are missing from the Revision 4 drawing file and therefore a complete review could not be performed. FR9 - CURRENT STATUS: Pending • UPDATE U1: Pending response to comment FR13. Note: the fueling area and new above ground storage tanks are required to meet the hydrant access requirements as well as fire access distances from fire lane requirements, as these are “new” structures/items on the site. • UPDATE U0: Provide a plan that is to scale that shows the location of the (2) closest hydrants to the site so the following requirement can be verified, be sure to identify private hydrants as “PRIVATE HYDRANT” on the plans. Fire hydrant locations. For non-sprinkled buildings AFD requires a minimum of 1 hydrant within 400ft of all portions of exterior walls and for sprinkled buildings AFD requires a minimum of 1 hydrant within 500ft of all portions of exterior walls. For either case, non-sprinkled or sprinkled buildings, all secondary hydrants necessary to meet the minimum fire flow for the building are required to be within 500ft of all portions of exterior walls. Provide a plan at a standard scale the shows the location of the hydrants necessary to meet this requirement and the required fire flow, based on not pulling more than 1250gpm out of a single hydrant per City of Austin Fire Protection Criteria Manual Fire Protection Rules. NOTE: The distances are measured as approved hose lay distance at the ground level and shall be measured around any obstructions. Fences and walls less than 4ft in height are usually not considered obstructions. The distance shall not be measured under or through the building. With respect to hydrants, roadways, driveways and buildings AFD Standard Operating Procedure (SOP) is to lay water supply hose lines to reduce the risk of damage to the water supply hose lines during firefighting operations, so hose lines will not obstruct traffic unnecessarily on major or the primary roadways in the area, or prevent access to the site by other fire or emergency apparatus or prevent access to the building during firefighting operations. Therefore, AFD does not lay water supply hose lines across major or primary roadways in the area and hydrants on the other side of a major or primary roadway in the area from a site cannot be used to meet this requirement. 13 SP-88-0052CX(R4) - LISD ES No. 19 Grandview Hills Ancillary Building Project; District 1029 of 43 Project Name: LISD ES No. 19 Grandview Hills Ancillary Building Project Address: 12024 VISTA PARKE DR File Number: SP-88-0052CX(R4) Reference: 2021 IFC 507.5.1 as amended by the City of Austin. FR10 - CURRENT STATUS: FYI • UPDATE U0: For required fire flow AFD does not pull more than 1250gpm out of a single hydrant per the City of Austin Fire Protection Criteria Manual Fire Protection Rules (see clip below), this maximum flow is used to determine the minimum number of hydrants required to meet hydrant access for a site. For example, for a fire flow of 3000 gpm, number of required hydrants = 3000gpm/1250gpm = 2.4, round up = 3 hydrants. FR11 - CURRENT STATUS: Cleared • UPDATE U0: Site Plans – clearly identify the location of any dumpsters on the site so the following can be verified. Dumpsters shall not be stored within buildings or within 10 ft of combustible walls, openings, or roof eave lines. EXCEPTIONS: Dumpsters in areas protected by an approved sprinkler system. Dumpsters may be stored in buildings of Type I or Type IIA construction provided they are at least 10 ft from other buildings and used exclusively for dumpster storage. Reference: 2021 IFC, Section 304.3.3 as amended by the City of Austin. FR12 - CURRENT STATUS: Cleared • UPDATE U0: Site Plans – clarify – are there any solar arrays/panels associated with this project? If yes, then clearly identify their locations on the plan including showing the size of the PV array. 13 SP-88-0052CX(R4) - LISD ES No. 19 Grandview Hills Ancillary Building Project; District 1030 of 43 Project Name: LISD ES No. 19 Grandview Hills Ancillary Building Project Address: 12024 VISTA PARKE DR File Number: SP-88-0052CX(R4) FR13 - CURRENT STATUS: Pending • UPDATE U1: Site Plan sheets 130-136 – it is unclear throughout these sheets what is being Proposed as new as part of this revision vs what is existing, please either fade the line work for existing features/items on the site and use heavier linework for the proposed/new items or very clearly callout any proposed item as “Proposed” so it is clear what is already existing on the site vs what is being proposed with this revision so a complete review can be performed. FR14 - CURRENT STATUS: Pending • UPDATE U1: Sheet 146/F-001 and 147/F-002 Fuel System Layout – drawings are not to scale per scale noted on the plans and there are specific requirements related to the propane and diesel/gasoline storage tanks and fueling area that cannot be verified until the scale is corrected. Example measurements: Sheet 146 set to 50scale per drawing scale Sheet 147 set to 1” = 6ft per drawing scale. 13 SP-88-0052CX(R4) - LISD ES No. 19 Grandview Hills Ancillary Building Project; District 1031 of 43 Project Name: LISD ES No. 19 Grandview Hills Ancillary Building Project Address: 12024 VISTA PARKE DR File Number: SP-88-0052CX(R4) FR15 - CURRENT STATUS: Pending • UPDTE U0: Concrete Island detail #7 for fuel dispensers on sheet 149/F-004 does not comply with following requirement it shows a 5” concrete island above the pavement, 6” is required or bollards have to be placed within 2ft of the corners of each dispensing unit for impact protection. Dispensers must be on a 6 in concrete island or protected by bollards – IFC Section 312, callout 6 inch tall concrete islands or show and callout bollards within 2ft of the corners of each fuel dispensing unit. If bollards are used provide a detail that complies with IFC Section 312 requirements. Reference: 2021 IFC, Sections 2603.7.3, 2603.7.3.1 and 312 FR16 - CURRENT STATUS: Pending • UPDATE U1: Site Plan Sheets 130-136 – clearly identify “all” buildings on these plans using labels for the schools, any protables, etc… identify all buildings on the site so it’ clear what they are used for. There are 6 buildings on this site according to google map imagery including the elementary school. FR17 - CURRENT STATUS: Pending • UPDATE U1: Storage of Class I and II liquids in aboveground tanks is prohibited out of major industrial zoning. Approval for tanks in other zoning must be approved by the Austin Fire Department Hazardous Material Group. A risk assessment will need to be performed for approval. Please email AFDHazmat@austintexas.gov to initiate this process. Code reference is 5704.2.9.6.1 from COA Local Amendments. FR18 - CURRENT STATUS: Pending • UPDATE U1: Propane tanks larger than 2000 gallons are prohibited in the City of Austin without prior approval from the Fire Department Hazardous Material Group. A risk assessment will need to be performed for approval. In addition, a public notification may be required if there are offsite exposures within 1000 ft of the tank. Please email AFDHazmat@austintexas.gov to initiate this process. Code reference 6104.2 from COA Local Amendments. 13 SP-88-0052CX(R4) - LISD ES No. 19 Grandview Hills Ancillary Building Project; District 1032 of 43 Project Name: LISD ES No. 19 Grandview Hills Ancillary Building Project Address: 12024 VISTA PARKE DR File Number: SP-88-0052CX(R4) FR19 - CURRENT STATUS: FYI • UPDATE U1: Repeat comment. • UPDATE U0: Additional comment may be generated with the next update depending on response provided for the comments above. Hydro Geologist Review – Eric Brown (512) 978-1539 - eric.brown@austintexas.gov [HG1] – Current Status: [Closed] • [U0]: [This project will require compliance with Watershed Protection Regulations. Please correct or remove Note 3 from the coversheet.] Reference: • [U1]: [Comment cleared. Note corrected to reflect the project compliance with WPD Regulations.] Reference: [HG2] – Current Status: [Closed] • [U0]: [Please add a note to the coversheet: “This project is located within the Edwards Aquifer Recharge Zone as defined by the City of Austin.”] Reference: LDC 25-8-2 (D)(5) • [U1]: [Comment cleared. Note added as Note 3.] Reference: [HG3] – Current Status: [Closed] • [U0]: [Please add the following note to the cover sheet and to the Erosion and Sedimentation Control Sheet of the site plan: “All permanent fencing must be installed at the perimeter of the Critical Environmental Feature (CEF) setback prior to the initiation of any construction or clearing activity. The fence material shall be in accordance with COA Item No. 701S.3(E) of the SSM, unless other materials are approved by the City of Austin. A lockable access gate shall be installed for each Critical Environmental Feature (CEF) setback.] Reference: • [U1]: [Comment cleared. Fencing note added as Note 8.] Reference [HG4] – Current Status: [Closed] • [Review Cycle]: [Please add a note to the cover sheet stating that: “Critical Environmental Features (CEF) are present on site. All activities within the CEF setback must comply with the City of Austin Code and Criteria.”] Reference: LDC 25-8-281(C)(2)(a) • [U1]: [Comment cleared. CEF note added as Note 6.] Reference: 13 SP-88-0052CX(R4) - LISD ES No. 19 Grandview Hills Ancillary Building Project; District 1033 of 43 Project Name: LISD ES No. 19 Grandview Hills Ancillary Building Project Address: 12024 VISTA PARKE DR File Number: SP-88-0052CX(R4) [HG5] – Current Status: [Closed] • [U0]: [Please add a void and water flow mitigation note to the cover sheet: “This project is subject to the Void and Water Flow Mitigation Rule (COA ECM 1.12.0 and COA Item No. 658S of the SSM) provision that all trenching/disturbance greater than 5 feet deep must be inspected by a geologist (Texas P.G.) or a geologist’s representative.”] Reference: • [U1]: [Comment cleared. Void note added to cover sheet as Note 5.] Reference [HG6] – Current Status: [Closed] • [U0]: [Remove the fence bisecting the setback of the existing karst features. Fencing should be installed around the perimeter of the proposed parking area. New location shown in the green on the provided screen shot of the plan set. Fence line will also be limits of construction and karst CEF setback.] Reference: • [U1]: [Comment cleared. Fencing moved to encompass the entirety of the setback.] Reference: 13 SP-88-0052CX(R4) - LISD ES No. 19 Grandview Hills Ancillary Building Project; District 1034 of 43 Project Name: LISD ES No. 19 Grandview Hills Ancillary Building Project Address: 12024 VISTA PARKE DR File Number: SP-88-0052CX(R4) [HG7] – Current Status: [Closed] • [U0]: [Modification of existing drainage area for karst features is restricted and grading in the setback is prohibited. Please remove the drainage line intersecting the setback. Water quality for the additional impervious can be established with rain garden/infiltration trench (shown in yellow below) to achieve water quality treatment standards while maintaining catchment for the existing features. Recommend meeting with this reviewer and drainage/water quality reviewer to make sure we all understand the goals] Reference: • [U1]: [Comment cleared. Drainage line removed from plans and full infiltration raingarden will be used to treat the additional impervious cover.] Reference [HG8] – Current Status: [Open] • [Review Cycle]: [Reduction/modification of standard 150-foot setback for hydrogeologic CEFs requires an administrative variance. Please use the Administrative Variance Form in ECM 1.3.3 to provide findings of facts for administrative variance to this reviewer: Eric.Brown@austintexas.gov. FYI: An administrative variance fee must be paid before this comment will be cleared.] Reference: LDC 25-8-42 (D), LDC 25-8-281 and ECM 1.10.0 • [U1]: [Pending submittal, approval, and payment of administrative variance. ] Reference: Land Development Engineering – William Bennett william.bennett@austintexas.gov 13 SP-88-0052CX(R4) - LISD ES No. 19 Grandview Hills Ancillary Building Project; District 1035 of 43 Project Name: LISD ES No. 19 Grandview Hills Ancillary Building Project Address: 12024 VISTA PARKE DR File Number: SP-88-0052CX(R4) LDE1: For the proposed Type II driveway shown on Sheet 129, reference the City of Austin details included in the plan set. U1: Comment addressed, clear. LDE2: New comment found on Sheet 133, the driveway radius on the left side of driveway must end a minimum of 10’ away from the drainage inlet. Please revise your 6.6’ dimension to a minimum of 10’. AW Utility Development Services – Derek Tucker (512) 972-0077 - derek.tucker@austintexas.gov AW1. – Current Status: Pending U1: The review comments will be satisfied once Pipeline Engineering has approved the water and wastewater utility plan. For plan review status, contact Dan Lofton with Pipeline Engineering at (512)972-0234 or Daniel.Lofton@austintexas.gov. Reference: Per Utility Criteria Manual Section 2, §15-9, §25-4, §25-5, §25-9, and the Uniform Plumbing Code Water Quality Review – Jennifer Reynolds, P.E.- jennifer.reynolds@austintexas.gov WQ 1 – Current Status: CLEARED • U1: Per meetings with hydrogeologist review, the final design meets ECM regulations. • U0: Please coordinate between this reviewer and the Hydrogeologist reviewer in regards to Comment HG7. Additional water quality treatment may be required. WQ 2 – Current Status: CLEARED • U1: No underground storage tank proposed. • U0: The ECM variance request mentions a fueling area. An HMI may be required. This comment will remain open until the UST review is approved. WQ 3 – Current Status: CLEARED • U1: Per meetings with hydrogeologist review, the final design meets ECM regulations. • U0: The ECM GSI variance request is granted. Note that any additional water quality controls generated from WQ 1 and HG7 must be GSI. WQ 4 – Current Status: CLEARED • U1: Per meetings with hydrogeologist review, the final design meets ECM regulations. • U0: Provide a sand or biofiltration bed cross-sectional detail, in accordance with ECM requirements. See City of Austin standard detail 661-1, 661-2, and 661-3. Demonstrate compliance with the provided detail. Please note this detail has been recently revised, so ensure the most updated version is provided. WQ 5 – Current Status: CLEARED • U1: Per meetings with hydrogeologist review, the final design meets ECM regulations. 13 SP-88-0052CX(R4) - LISD ES No. 19 Grandview Hills Ancillary Building Project; District 1036 of 43 Project Name: LISD ES No. 19 Grandview Hills Ancillary Building Project Address: 12024 VISTA PARKE DR File Number: SP-88-0052CX(R4) • U0: Install a removable PVC cap with an appropriately sized orifice to provide a forty-eight (48) hour drawdown time. The drawdown orifice diameter should be determined using the falling head orifice equation. Provide the drawdown/orifice-sizing calculations. Reference: ECM 1.6.5.A-3. WQ 6 – Current Status: CLEARED • U1: Per meetings with hydrogeologist review, the final design meets ECM regulations. • U0: For filtration rain gardens, demonstrate compliance with all underdrain piping and cleanout requirements. All cleanouts should be flush with the top of the sand bed or the proposed grade. Provide an accessible/full-pond cleanout. Distance between laterals should be no more than 10 ft. and distance between laterals and pond walls should be no more than 5 ft. Cleanouts must be provided at all bends and connections. Reference: ECM 1.6.5(A)(4) AW Pipeline Engineering – Daniel Lofton (512) 972-0234 - daniel.lofton@austintexas.gov 7/14/25 2nd review RED LINE COMMENTS CAN BE FOUND AND DOWNLOADED FROM THE “ ATTACH LINK BELOW”: https://studio.bluebeam.com/share/9ocghpidc7h4f7 City Arborist Review – Dillon Olsen – (512) 974-2515 – dillon.olsen@austintexas.gov Note: Please e-mail me if you have any questions, concerns, or require additional information about these comments: Dillon.Olsen@austintexas.gov. You may also e-mail me if you would like to schedule a phone or virtual meeting to clarify the review comments. Updates cannot be reviewed outside of the update review cycle. 07/16/2025 – Update 1. Review not required. Comments from Update 0 are void. This site is subject to an ILA that does not adhere to City of Austin regulations. Wildland Urban Interface Review – Kara Henderson (512) 974-0125 - kara.henderson@austintexas.gov 13 SP-88-0052CX(R4) - LISD ES No. 19 Grandview Hills Ancillary Building Project; District 1037 of 43 Project Name: LISD ES No. 19 Grandview Hills Ancillary Building Project Address: 12024 VISTA PARKE DR File Number: SP-88-0052CX(R4) WUI “0” – Comments cleared, remaining in informal update pending coordination with case manager for WUI stamp on final set, also so reviewer can be aware of potential changes WUI 1 – Current Status: Information Only • U1: Information relayed in U0. • U0: Wildland-Urban Interface requirements The property is located within the Wildland-Urban Interface (WUI). New and modified structures will be required to comply with the Ignition-Resistant (IR) Construction requirements of the 2015 International Wildland-Urban Interface (IWUIC) (or most current edition adopted at the time of building permit application) and amendments. The code and local amendments will be referenced together as the "WUIC" and may be found here: https://www.austintexas.gov/department/wildland-urban-interface-code Do not apply WUIC Section 603, no tree mitigation will be done for WUI compliance. Defensible space cannot be provided to reduce hazard or change WUI Proximity. Structures and materials not requiring a building permit shall demonstrate compliance with Ignition-Resistant Construction requirements on the Site Plan drawing set. Specific materials must be identified on the plans so that ignition-resistance can be verified at plan review. Separate comments to be generated for such items in this review. Related building permit application plans and details for structures located within the site shall demonstrate compliance with the WUIC regulations including for Ignition-Resistant Construction based on proximity to the wildland. WUI 2 – Current Status: Cleared • U1: Coversheet updated accordingly • U0: WUI Code and Proximity Class AFD has identified the following WUI Proximity Class designations based on proximity to the wildland. Proximity Class A: 50 feet or closer to the wildland Proximity Class B: greater than 50 feet and up to 150 feet from the wildland Proximity Class C: greater than 150 feet out to 1.5 miles from the wildland The structures on this site are all within WUI Proximity Class A. Add the following to the Fire Code Information Table on the Cover Sheet identifying the code and WUI Proximity Class. (More information about the AFD coversheet table should be given by the Fire Reviewer) Cover Sheet AFD Table: Wildland Urban Interface Code 2015 International Wildland-Urban Interface Code (IWUIC) with City of Austin Local Amendments. Site and structure(s) shall be designed and constructed to the WUI Proximity Class A Ignition-Resistant requirements of the code. 13 SP-88-0052CX(R4) - LISD ES No. 19 Grandview Hills Ancillary Building Project; District 1038 of 43 Project Name: LISD ES No. 19 Grandview Hills Ancillary Building Project Address: 12024 VISTA PARKE DR File Number: SP-88-0052CX(R4) Site Plan Review – Meg Greenfield meg.greenfield@austintexas.gov I have combed through the previous three revision cases and the PDA (zoning case number SP1 C14R-87-159 (HC)) and I don’t see how the change of use from the chemical plant to school was approved. Was there an amendment to the PDA? I will keep looking because I’m sure it was approved for the previous three revisions… U1: comment cleared. Per 25-2-602 Uses permitted in a research and development (R&D) district are established by the zoning ordinance establishing the district. Not seeing any use limitations in the ordinance or ‘zoning site plan’ in the zoning files, we can proceed as is. Please add related cases to the coversheet: C14R-87-159(HC), C14-00-2055 It appears that REVISION 1-2 & 3 are revised sheets of the old plan set and REVISION 4 is SP2 where the added sheets start. Are any sheets in the older plans being revised or replaced? The revision table on sheet 94 says 1-94 are revised but there are no redlines on those sheets. For clarity, please void any unused sheets and any revised sheets should have redlines. You don’t have to keep all of the old plan sheets in this R4 plan set—just the sheets relevant to the new project. Let me know if you have questions. U1: comment partially cleared—please keep the old coversheet at a minimum. Otherwise it’s a new site plan. You can include it as the 2nd sheet in the set as reference only. So it would be R: 1, A: 94-175. SP3 Please update submittal date to 9/4/24. U1: comment cleared. SP5 Correct zoning and case number in site plan release block. Block should be on coversheet only. U1: comment partially cleared—please correct landscape sheets. Is there any increase to building coverage? Doesn’t appear so. SP6 U1: comment cleared. SP7 Please add the (R4) to case number on right hand side of all sheets. U1: comment partially cleared—please correct sheets 146-175. SP8 Lines are missing from legend on sheet 104. U1: comment cleared. SP9 This note on the new coversheet doesn’t seem to match the new site plan sheet which says total IC is 10.67 acres: 13 SP-88-0052CX(R4) - LISD ES No. 19 Grandview Hills Ancillary Building Project; District 1039 of 43 Project Name: LISD ES No. 19 Grandview Hills Ancillary Building Project Address: 12024 VISTA PARKE DR File Number: SP-88-0052CX(R4) U1: comment cleared. SP10 You might consider changing the project title on the plans: LISD ES No. 19 Grandview Hills Ancillary Building Project. Since this is just parking no buildings. I think this title is confused with the building site plan that was withdrawn. U1: comment cleared. SP11 please correct typo in sheet 146 title. Please note sheets 146-167 aren’t needed in site plan review so those won’t be stamped, in case changes are made in building plan review. SP12 hill country roadway—per 25-5-142 this needs to go to land use commission. Once all design- related comments are cleared we can schedule for commission. Also, what is the LOC within the P zoning? If its over an acre it will need to go to land use commission. END OF MASTER COMMENT REPORT Comment Resolution Process: You can submit a Comment Resolution Request if: 1. You have identified two or more comments in your Master Comment Report that conflict with each other; and 2. You do not believe that the comments can be satisfied. Comment Resolution Requests can only be submitted and resolved between review cycles. They cannot be submitted while the site plan is in review. Use the Comment Resolution Request Web Form to submit your request. Questions or Concerns? Contact Us: If you have any questions or concerns or if you require more information about this report, please do not hesitate to contact your Case Manager at the email address listed at the top of this report or by writing to the City of Austin, Development Services Department, P.O. Box 1088, Austin, Texas 78767. 13 SP-88-0052CX(R4) - LISD ES No. 19 Grandview Hills Ancillary Building Project; District 1040 of 43 13 SP-88-0052CX(R4) - LISD ES No. 19 Grandview Hills Ancillary Building Project; District 1041 of 4313 SP-88-0052CX(R4) - LISD ES No. 19 Grandview Hills Ancillary Building Project; District 1042 of 4313 SP-88-0052CX(R4) - LISD ES No. 19 Grandview Hills Ancillary Building Project; District 1043 of 43