ITEM05 C15-2026-0029 ADV PACKET AUG10

Board of Adjustment – Aug. 10, 2026

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BOA GENERAL REVIEW COVERSHEET CASE: C15-2026-0029 BOA DATE: Monday, August 10th, 2026 ADDRESS: 3011 Westlake Dr OWNER: Agustin Gonzalez COUNCIL DISTRICT: 8 AGENT: Jon Fichter – Aqua Permits ZONING: LA LEGAL DESCRIPTION: LOT 71 PLUS ADJ PT LAKE SHORE ADDN VARIANCE REQUEST: Land Development Code, Section 25-2-1176 (Site Development Regulations for Docks, Marinas, and Other Lakefront Uses) (A) (1) to increase the dock length from 30 feet (required) to fifty feet (50’) (requested). SUMMARY: erect a Boat Dock ISSUES: shallow ZONING LAND USES LA Site North LA South LA LA East LA West Single-Family Single-Family Single-Family Lake Austin Single-Family NEIGHBORHOOD ORGANIZATIONS: Austin Neighborhoods Council City of Rollingwood Friends of Austin Neighborhoods Preservation Austin Save Our Springs Alliance The Island on Westlake Owners Association ITEM05/1July 23, 2026 Stephen Hawkins 3011 Westlake Dr Austin TX, 78746 Property Description: LOT 71 PLUS ADJ PT LAKE SHORE ADDN Re: C15-2026-0029 Dear Stephen, Austin Energy (AE) has reviewed your application for the above referenced property, requesting that the Board of Adjustment consider a variance(s) from LDC, Section 25-2-1175 at 3011 Westlake Dr. Austin Energy does not oppose the request, provided that any proposed or existing improvements follow Austin Energy’s Clearance & Safety Criteria, the National Electric Safety Code, and OSHA requirements. All signage will need to stay out of Austin Energy easements and 5’ from existing underground electric lines. Any removal or relocation of existing facilities will be at the owner’s/applicant’s expense. Please use this link to be advised of our clearance and safety requirements, which are additional conditions of the above review action: https://library.municode.com/tx/austin/codes/utilities_criteria_manual?nodeId=S1AUENDECR_1 .10.0CLSARE If you require further information or have any questions regarding the above comments, please contact our office. Thank you for contacting Austin Energy. Ashleigh Woolf, Austin Energy Public Involvement | Real Estate Services 4815 Mueller Blvd Austin, Texas 78723 (512) 972-8400 ITEM05/2ITEM05/3ITEM05/4ITEM05/5ITEM05/6July 22nd, 2026 Board of Adjustment P.O. Box 1088 Austin, TX 78767 Re: Variance for 3011 Westlake Drive from LDC 25-2-1176(A)(1) to allow for extending of a boat dock greater than 30’ from shoreline. Dear Board Members, This letter provides clarification concerning case C15-2026-0029, which relates to site plan SP-2025-0386D. The plan proposes replacing an existing boat dock with a new boat dock that will comply with current code. The variance request is to construct a boat dock at a distance greater than 30 feet from the shoreline, a measure deemed necessary for navigational and safety reasons. We request that the BOA grant this variance to enable the property owners to use their dock safely and legally, consistent with other neighboring docks that exhibit similar bathymetry. An image from the City of Austin GIS services illustrates the lake's bathymetry. It shows that docks upstream and downstream of 3011 Westlake Drive have similar depths extending from their respective shorelines: ITEM05/7 Dredging Information: In most cases where the lake is shallow and a new boat dock is proposed, the allowable 25 cubic yards of dredge per LDC 25-2-1176(A)(1) is sufficient to allow navigational safety. In regards to 3011 Westlake Drive, the amount of dredge needed at that length would substantially exceed that amount. 3011 Westlake Drive Dredge Exhibit: For modern watercraft to operate safely, a minimum water depth of 3.5 feet is required. At 3011 Westlake Drive, this depth is not naturally achieved 30 feet from the shoreline. Dredging the area between this 30-foot point and the existing bulkhead/shoreline would result in more than 25 cubic yards of dredged material. To comply with legal limits, the proposed design extends 50 feet from the shoreline, significantly reducing the volume of dredge material. Dredging greater than 25 cubic yards of material would require a separate variance approval from the environmental commission to this section of code - there is no guarantee of this being approvable and historically has been denied by the committee Design Notes: It should be noted that the proposed dock at 3011 Westlake is being proposed at a lesser length from shoreline than what is currently existing/non-conforming on site. Currently the existing boat dock is 84’ 4” from shoreline at it’s longest point – the slip of the proposed dock will be 50’ from shoreline at its longest point, for a reduction of 34’ 4”. Navigation: This section of the lake is wide, measuring over 850 feet at its widest point between the end of the Westlake Dock and the opposing side of the lake. A decrease in boat dock length from 84’4” to 50’ at 3011 Westlake Drive would reduce the risk to boater safety in this section of the lake. ITEM05/8 Effects of Dredging: The permitting of dredging, which is typically a one-time operation for navigability, requires city approval. However, dredging’s environmental impact on Lake Austin is significant, releasing lakebed material and causing increased turbidity which can harm vegetation and provide reduced visibility in the lake. That turbidity, when produced over time, can have a negative impact on the lake’s ecosystem. Granting the variance is crucial to avoid continuous, environmentally damaging dredging, thereby preserving Lake Austin's ecosystem. Final Notes: Based on the navigational and safety concerns, the impracticality and environmental harm of extensive dredging, and the support from neighboring properties, we respectfully request that the Board of Adjustment grant the variance for 3011 Westlake Drive. This will allow for the construction of a new boat dock extending greater than 30 feet from the shoreline, ensuring safe and legal watercraft operation while protecting Lake Austin's delicate ecosystem. ITEM05/9 AUSTIN WATER REVIEWEDDATE:07/01/2025EXPIRATION DATE:Austin Water Representative:07/01/20287/11/2025REVIEWED FOR CODE COMPLIANCEneighboring concrete driveway 40'-6" 75'-7" 133'-6 1/2" 133'-6 1/2" 27'-0" 107'-7" 39'-0 1/2" 748'-4" 553 R10'-0" driveway commences inside property line R10'-0" EDGE OF PAVEMENT EXISTING POWER POLE EXISTING 8" WATERLINE NEW 2" WATER SERVICE NEW METER NEW 2" WATERLINE EXISTING 6" SEWER 14'-6" " 0 - ' 0 1 " 2 / 1 9 - ' 8 1 " 0 - ' 6 1 550 " 0 - ' 2 " 0 - ' 3 " 0 - ' 3 edge of drive 1 propane tank " 0 - ' 2 2 k n a t e n a p o p r l a n o i t p o 6410 " 0 - ' 3 2 " 0 - ' 0 1 " 0 - ' 3 2 " 0 - ' 7 " 0 - ' 8 RUN ALL PLUMBING AND ELECTRICAL CONDUITS BELOW GRADE AND OUT OF THE CRITICAL ROOT ZONE OF ALL TRESS ON SITE 64'-7" 46'-1 1/2" 6411 proposed waterline proposed propane line proposed electrical line proposed sewer line 0.7' provide tree protection 0 4 5 5 3 5 6412 6413 OFFICE COVERED ENTRY 546'-8" 547'-0" OFFICE ENTRY OFFICE UTILITY COURT PORCH OFFICE PDR 546'-8" 546'-8" 547'-0" 1 OFFICE BULLPEN 25'-7" x 22'-1" OFFICE OFFICE LOUNGE 530 PROMONTORY 3'-0" 2'-0" 3'-0" 6414 DECK 6415 6416 ARRIVAL COURT 5 4 5 OFFICE STORAGE VESTIBULE GALLERY OFFICE RESTROOM 11'-4" x 16'-7" EXECUTIVE OFFICE 13'-7" x 16'-7" E SIDE YARD 5 2 5 0 2 5 5 1 5 0 1 5 5 0 5 " 0 - ' 2 " 0 - ' 3 " 0 - ' 3 provide tree protection 6417 6418 BASEMENT LOCATION 63'-1 1/2" 139'-10 1/2" PARKING GARAGE 4 / STORAGE 0 0 5 " 0 - ' 0 1 " 0 - ' 5 3 " 2 / 1 1 1 - ' 4 5 6419 27'-0" 8 9 74 9 4 6 9 4 748'-4" 39'-0 1/2" 218'-1" 37'-7" 75'-0 1/2" BUNK WIC 3 BUNKHOUSE BEDROOM 3 BUNKHOUSE BATH 3 BUNKHOUSE COMMON ROOM BUNKHOUSE BATH 2 BUNKHOUSE BEDROOM 2 BUNK WIC 2 GARAGE 2 BUNK HALL 3 MECH 5 BUNK HALL 2 MECH 4 BUNK ENTRY HALL BUNKHOUSE ENTRY 2 STORAGE PDR 3 SECRET STORAGE tile clg SPA BATH COMBI-SAUNA STEAM SAUNA SPA STAIR SPA HALLWAY SPA HALL RAIN FOREST SHOWER SPA GROTTO HIDDEN OFFICE HIS WIC HIS BATH HIS HER BATH HERS HER WIC OWNER'S SUITE OWNER'S LANAI SLOPE 1/8" : 1'-0" 75' SHORELINE SETBACK RETREAT PORCH OWNER'S RETREAT / PRIVATE OFFICE / NURSURY RETREAT BATH BATH VEST BATH GALLERY MIDNIGHT KITCHEN PDR 2 VEST. RETRAT GALLERY POOL BATH " 0 - ' 1 : " 8 / 1 E P O L S SLOPE 1/8" : 1'-0" ENTRY ENTRY PAVILION PAVILION HOME OFFICE / GUEST SUITE / EXERCISE PAVILION EXERCISE BATH EXERCISE STORAGE MECH 3 1 scrap and salvage services; animal hospitals, animal breeding; clinics, hospitals; hospital services; contractors yards; The following are prohibited as home occupations: 1. 2. 3. 4. 5. dance studios; 6. 7. massage parlors other than those employing massage therapists licensed by the state; restaurants; 8. cocktail lounges; 9. 10. rental outlets; 11. equipment sales; 12. adult oriented businesses; 13. 14. drop-off recycling collection facilities; 15. an activity requiring an H-occupancy under Chapter 25-12, Article 1 ( Uniform Building Code ); 16. automotive repair services; and 17. businesses involving the repair of any type of internal combustion engine, including equipment repair services. recycling centers; 553 I E V R D E K A L T S E W " 0 - ' 2 " 0 - ' 3 " 0 - ' 3 driveway commences inside property line 550 edge of drive k n a t e n a p o p r l a n o i t p o propane tank neighboring concrete driveway HOME OCCUPATION SETBACK 6411 ARRIVAL COURT ARRIVAL COURT 5 4 5 0 4 5 6412 6413 5 3 5 530 PROMONTORY PROMONTORY 3'-0" 2'-0" 3'-0" 6414 DECKDECK OFFICE COVERED ENTRY OFFICE ENTRY COURT PORCH OFFICE UTILITY OFFICE PDR 22'-1" 25'-7" x OFFICE BULLPEN 1 OFFICE GAME PORCH SUPER GAME ROOM ENTRY PORCH SLOPE 1/8" : 1'-0" WINE BAR PORCH BAR WINE GALLERY STAIR GALLERY GREAT ROOM COVERED LANAI DINING GARAGE 1 VEST MECH SUPER LAUNDRY TRASH ELEVATOR L1 KEEPING ROOM HALL PDR 1 FOOD PANTRY KITCHEN THEATER KEEPING ROOM SHOW KITCHEN SLOPE 1/8" : 1'-0" " 0 - ' 1 : " 8 / 1 E P O L S OUTDOOR LIVING SLOPE 1/8" : 1'-0" VIEW LANAI provide tree protection 75' SHORELINE SETBACK 237'-5" 30'-5" 75' SHORELINE SETBACK 73'-0" M S M S cinder block wall GARAGE / STORAGE GARAGES MAIN HOUSE proposed waterline proposed propane line proposed electrical line proposed sewer line 0.7' 5 2 5 0 2 5 5 1 5 0 1 5 5 0 5 8 9 74 9 4 6 9 4 PARKING PARKING GARAGE 4 / STORAGE 0 0 5 " 0 - ' 2 " 0 - ' 3 " 0 - ' 3 BUNK WIC 3 BUNKHOUSE BEDROOM 3 BUNKHOUSE BATH 3 BUNKHOUSE COMMON ROOM BUNKHOUSE BATH 2 BUNKHOUSE BEDROOM 2 MECH 5 BUNK HALL 2 STORAGE PDR 3 MECH 4 BUNK ENTRY HALL BUNKHOUSE ENTRY 2 PAVILION GARAGE 2 BUNK HALL 3 PORTE COCHERE ENTRY ENTRY ENTRY PAVILION HOME OFFICE / GUEST SUITE / EXERCISE PAVILION EXERCISE BATH EXERCISE STORAGE MECH 3 SECRET STORAGE tile clg SPA BATH BUNK WIC 2 SPA HALL COMBI-SAUNA STEAM SAUNA SPA STAIR SPA HALLWAY RAIN FOREST SHOWER SPA GROTTO HIDDEN OFFICE HIS WIC HIS BATH HIS RETREAT BATH HER BATH HERS HER WIC OWNER'S SUITE OWNER'S LANAI SLOPE 1/8" : 1'-0" BATH VEST BATH GALLERY MIDNIGHT KITCHEN RETREAT PORCH OWNER'S RETREAT / PRIVATE OFFICE / NURSURY PDR 2 VEST. POOL BATH RETRAT GALLERY ENTRY PORCH SLOPE 1/8" : 1'-0" GREAT ROOM COVERED COVERED LANAI LANAI " 0 - ' 1 : " 8 / 1 E P O L S SLOPE 1/8" : 1'-0" 495 GARAGE 1 GARAGE 1 VESTVEST MECHMECH SUPER SUPER LAUNDRY LAUNDRY TRASH TRASH GAME PORCH SUPER GAME ROOM WINE BAR PORCH DINING BAR WINE GALLERY STAIR GALLERY ELEVATOR L1 KEEPING ROOM HALL PDR 1 FOOD PANTRY KITCHEN THEATER THEATER KEEPING ROOM SHOW KITCHEN SLOPE 1/8" : 1'-0" " 0 - ' 1 : " 8 / 1 E P O L S OUTDOOR LIVING SLOPE 1/8" : 1'-0" VIEW LANAI 1 see electrical clearance diagrams below & notes EDGE OF PAVEMENT EXISTING POWER POLE EXISTING 8" WATERLINE NEW 2" WATER SERVICE NEW METER NEW 2" WATERLINE EXISTING 6" SEWER 6410 " 0 - ' 3 2 " 0 - ' 7 " 0 - ' 8 OFFICE STORAGE VESTIBULE GALLERY OFFICE RESTROOM 11'-4" x 16'-7" EXECUTIVE OFFICE 13'-7" x 16'-7" E SIDE YARD SIDE YARD 14'-6" RUN ALL PLUMBING AND ELECTRICAL CONDUITS BELOW GRADE AND OUT OF THE CRITICAL ROOT ZONE OF ALL TRESS ON SITE 64'-7" see electrical clearance diagrams below & notes OFFICE LOUNGE 6415 SETBACK 6416 6417 6418 6419 " 0 - ' 2 " 0 - ' 3 " 0 - ' 3 " 8 - ' 7 2 PORTE COCHERE " 2 / 1 8 - ' 4 2 " 3 - ' 2 2 " 6 - ' 5 1 " 0 - ' 2 " 0 - ' 3 " 0 - ' 3 127'-6" 744'-6" 6424 S M S M S M S M S M S M S M S M S M S M 6423 S M S M 6422 S M S M S M k c e d d o o w S M 6421 M S BUNK WIC 3 BUNKHOUSE BEDROOM 3 BUNKHOUSE BATH 3 BUNKHOUSE COMMON ROOM PDR 3 MECH 4 BUNK ENTRY HALL BUNKHOUSE ENTRY 2 PAVILION GARAGE 2 BUNK HALL 3 ENTRY ENTRY PAVILION HOME OFFICE / GUEST SUITE / EXERCISE PAVILION EXERCISE BATH EXERCISE STORAGE MECH 3 Partial Site Plan 1/16" = 1'-0" INSTALL MIN. 100 LINEAR FEET OF SILT FENCE - PER DETAIL INSTALL MIN. 100 LINEAR FEET OF MULCH SOCK - PER DETAIL SHORELINE=492.8' wood deck SHORELINE - 492.8' PER LA ZONING Partial Site Plan 1/16" = 1'-0" NEIGHBORING 24" CYPRESS 6424 Property line extends to the West gradient bank of Colorado River k c e d d o o w S M S M S M S M S M 6423 S M 6422 S M S M 6421 S M M S 4 9 4 cinder block wall EXISTING BOAT DOCK TO BE REMODELED UNDER SEPARATE PERMIT +499.00' SLAB ELEVATION LAKE AUSTIN wood deck BOAT HOUSE Property line extends to the West gradient bank of Colorado River 330 N 30 60 300 270 W 240 E 90 120 S 150 210 180 Site Plan 1" = 30'-0" SITE PLAN NOTES: 1. PROVIDE PEDESTRIAN PROTECTION ADJACENT TO PUBLIC WAY DURING CONSTRUCTION BY MEANS OF A FENCE CONSTRUCTED PER CODE. 2. AN OSHA PERMIT IS REQUIRED FOR EXCAVATIONS DEEPER THAN 5' AND FOR SHORING AND UNDERPINNING. CONTRACTOR TO PROVIDE A COPY OF OSHA PERMIT IF APPLICABLE. 3. OVERALL LOT DIMENSIONS PER RECORDED MAP AND SURVEY. 4. ALL PRIVATE SPRINKLER HEADS SHALL BE INSTALLED AND POSITIONED IN A MANNER THAT WILL NOT CAUSE IRRIGATION OVERSPRAY ONTO THE PUBLIC RIGHT-OF-WAY. 5. NO PERMANENT STRUCTURES CAN BE BUILT WITHIN THE LIMITS OF THE STREET/SIDEWALK EASEMENT. 6. SITE DRAINAGE SHALL BE RUN THROUGH A MINIMUM OF 15 FEET OF PERFORATED PIPE PRIOR TO DISCHARGE INTO THE PUBLIC ROW. 7. A SAMPLE FOR ALL EXTERIOR FINISH MATERIALS (INCLUDING ALL COLORS, PATTERNS, BLENDS, MORTARS, TILES, METALS, PLASTERS, STONE, WOOD, STAIN, PAINT, OR OTHER EXTERIOR MATERIALS) SHALL BE CONSTRUCTED AT SITE FOR REVIEW AND APPROVAL BY ARCHITECT. 8. EROSION CONTROL SILT FENCING SHALL BE INSTALLED PRIOR TO ANY SITE WORK. 9. ALL SITE DRAINAGE SHALL BE REASONABLY CONTAINED WITHIN THE BOUNDARIES OF THE SITE AND NOT INTENTIONALLY DISCHARGE TO ADJACENT NEIGHBORS. 10. 11. THE SITE SHALL CONTAIN A MINIMUM OF TWO GUEST PARKING SPACES. UNENCLOSED SPACES MUST UTILIZE A COMBINATION OF PLANTINGS AND/OR LOW WALLS TO SCREEN CARS FROM VIEW. PARKING SPACES SHALL HAVE A MINIMUM DIMENSION OF 9' X 18'. TREE PROTECTION FENCING (5-FOOT CHAIN-LINK FENCE) SHOULD BE EXTENDED TO THE FULL AVAILABLE CRITICAL ROOT ZONE (CRZ) OF ALL PROTECTED SIZE TREES THAT FALL IN OR NEAR THE LIMITS OF CONSTRUCTION. ANY AREA OF THE FULL CRITICAL ROOT ZONE THAT IS NOT FENCED SHOULD BE ALLOCATED 8 INCHES OF HARDWOOD MULCH. 12. FOR ALL NEW YARD LINES AND ALL EXISTING AND PROPOSED WATER, WASTEWATER, AND GAS ROUTES AND METER LOCATIONS, AVOID THE ½ CRITICAL ROOT ZONES OF PROTECTED TREES. IF TRENCHING WITHIN THE ½ CRZ OF PROTECTED TREES CANNOT BE AVOIDED, THE TRENCHES WILL HAVE TO BE AIR SPADED BY A QUALIFIED ARBORIST FOR THE TOP 30” TO AVOID CUTTING ROOTS 1.5”+ IN DIAMETER AND THE PAID RECEIPT FOR THE WORK WILL BE REQUIRED BY THE FINAL TREE INSPECTOR. SITE PLAN KEYNOTES: 1 2 3 4 5 6 7 8 9 10 11 PROVIDE BULLROCK CONSTRUCTION ENTRANCE CONSTRUCTION DUMPSTER LOCATION PROVIDE SOUND ATTENUATION AND NOISE ABATEMENT MEASURES FOR HVAC EQUIPMENT AND POOL EQUIPMENT SEE TREE PROTECTION AND REMOVAL PLAN FOR TREE LENGEND SEE LANDSCAPE PLAN FOR HARDSCAPE AND PLANT MATERIALS FENCE TO ADJACENT NEIGHBOR UTILITY PANEL LOCATION PROVIDE PAVER GUEST PARKING AREA FOR MINIMUM (2) CARS ALL SITE LIGHTING TO COMPLY WITH LIGHT POLLUTION ORDINANCE IF APPLICABLE COLOR, BLEND, AND PATTERN OF DRIVE PAVERS TO BE APPROVED BY ARCHITECT; PROVIDE SITE MOCK-UP COLOR, BLEND, AND PATTERN OF HARDSCAPE WALLS AND FLOORS TO BE APPROVED BY ARCHITECT; PROVIDE SITE MOCK-UP DRIVEWAY NOTES: Use of Open Joint Permeable Pavers is a recognized Best Management Practice by the U.S. Environmental Protection Agency (EPA), providing both pollution control and stormwater management. Permeable open jointed paver systems help retain stormwater on site, where the water falls, thereby allowing property owners to achieve pre-development stormwater goals with smaller capacity stormwater systems. For all permeable paving, base course is a reservoir layer of 1”-2” crushed stone; depth to be determined by storage required and frost penetration. Permeable paving require a single-size grading of base material in order to provide voids for rainwater storage; choice of materials is a compromise between stiffness, permeability, and storage capacity. Use angular crushed rock material with a high surface friction to prevent traffic compaction and rutting. The design shall also include a 2” thick filter course of ½” crushed stone, applied over the base course. A geotextile fabric shall be laid at the top of the filter layer to trap sediment and pollutants. The introduction of dirt or sand onto the paving surface, whether transported by runoff from elsewhere or carried by vehicles, will contribute to premature clogging and failure of the paving. Consequently, permeable paving should be constructed as one of the last items to be built on a site, after most heavy construction vehicles are finished and after the majority of the landscaping work is completed. 1 ELECTRICAL CLEARANCES: Note: · There is an existing single phase 45 ft energized power line along the right front corner of the property. · The Project shall maintain clearances from AE electric distribution overhead facilities as required in Section 234 of the NESC. · In addition, the Project's facilities shall not be installed under or over AE overhead distribution facilities and shall maintain a minimum horizontal sky-to-ground clearance of 7 feet-6 inches from overhead primary, neutral, and secondary conductors (not including service drops to the individual buildings on the same lot) and a 15-foot-radius clearance from overhead distribution primary and neutral conductors. · Additional clearance and access easements may be required by Austin Energy to ensure accessibility to safely maintain AE infrastructure (Criteria Manual - 1.10.3 Permanent Clearances from AE Overhead Distribution Lines and Facilities, Pg 89) · The horizontal and radial clearance shall be demonstrated from both the primary and neutral wire. 5 2 - 5 1 - 5 : d e t n i r P e t a D e c n e d i s e R m o t s u C I E V R D E K A L T S E W 1 1 0 3 S A X E T , Y T N U O C S V A R T I , N I T S U A 1118 Jacaranda Ave Daytona Beach, FL www.studioarx.com © studio architects 2025 04-11-23 PERMIT PACKAGE DATE 04-07-25 REVISIONS 1 City Review Comments 04-07-25 PROJECT NUMBER 2501 SHEET NUMBER A1.3 7/11/2025REVIEWED FOR CODE COMPLIANCE APPENDIX P-1 - EROSION CONTROL NOTES 1. The contractor shall install erosion/sedimentation controls, tree/natural area protective fencing, and conduct "Pre-Construction" tree fertilization (if applicable) prior to any site preparation work (clearing, grubbing or excavation). 2. The placement of erosion/sedimentation controls shall be in accordance with the Environmental Criteria Manual and the approved Erosion and Sedimentation Control Plan. T he COA ESC Plan shall be consulted and used as the basis for a TPDES required SWPPP. If a SWPPP is required, it shall be available for review by the City of Austin Environmental Inspector at all times during construction, including at the Pre-Construction meeting. The checklist below contains the basic elements that shall be reviewed for permit approval by COA EV Plan Reviewers as well as COA EV Inspectors. — Plan sheets submitted to the City of Austin MUST show the following: Direction of flow during grading operations. Location, description, and calculations for off-site flow diversion structures. Areas that will not be disturbed; natural features to be preserved. Delineation of contributing drainage area to each proposed BMP (e.g., silt fence, sediment basin, etc.). Location and type of E&S BMPs for each phase of disturbance. Calculations for BMPs as required. Location and description of temporary stabilization measures. Location of on-site spoils, description of handling and disposal of borrow materials, and description of on-site permanent spoils disposal areas, including size, depth of fill and revegetation procedures. Describe sequence of construction as it pertains to ESC including the following elements: 1. Installation sequence of controls (e.g. perimeter controls, then sediment basins, then temporary stabilization, then permanent, etc.) 2. Project phasing if required (LOC greater than 25 acres) 3. Sequence of grading operations and notation of temporary stabilization measures to be used 4. Schedule for converting temporary basins to permanent WQ controls 5. Schedule for removal of temporary controls 6. Anticipated maintenance schedule for temporary controls — Categorize each BMP under one of the following areas of BMP activity as described below: 3.1 Minimize disturbed area and protect natural features and soil 3.2 Control Stormwater flowing onto and through the project 3.3 Stabilize Soils 3.4 Protect Slopes 3.5 Protect Storm Drain Inlets 3.6 Establish Perimeter Controls and Sediment Barriers 3.7 Retain Sediment On-Site and Control Dewatering Practices 3.8 Establish Stabilized Construction Exits 3.9 Any Additional BMPs — Note the location of each BMP on your site map(s). — For any structural BMPs, you should provide design specifications and details and refer t othem. — For more information, see City of Austin Environmental Criteria Manual 1.4. 3. The Placement of tree/natural area protective fencing shall be in accordance with the City of Austin standard Notes for Tree and Natural Area Protection and the approved Grading/Tree and Natural Area Plan. 4. A pre-construction conference shall be held on-site with the contractor, design Engineer/ permit applicant and Environmental Inspector after installation of the erosion/sedimentation controls, tree/natural area protection measures and "Pre-Construction" tree fertilization (if applicable) prior to beginning any site preparation work. The owner or owner's representative shall notify the Development Services Department, 512-974-2278 or by email at environmental.inspections@austintexas. gov, at least three days prior to the meeting date. COA approved ESC Plan and TPDES SWPPP (if required) should be reviewed by COA EV Inspector at this time. 5. Any major variation in materials or locations of controls or fences from those shown on the approved plans will require a revision and must be approved by the reviewing Engineer, Environmental Specialist or City Arborist as appropriate. Major revisions must be approved by authorized COA staff. Minor changes to be made as field revisions to the Erosion and Sedimentation Control Plan may be required by the Environmental Inspector during the course of construction to correct control inadequacies. 6. The contractor is required to provide a certified inspector that is either a licensed engineer (or person directly supervised by the licensed engineer) or Certified Professional in Erosion and Sediment Control (CPESC or CPESC - IT), Certified Erosion, Sediment and Stormwater - Inspector (CESSWI or CESSWI - IT) or Certified Inspector of Sedimentation and Erosion Controls (CISEC or CISEC - IT) certification to inspect the controls and fences at weekly or bi-weekly intervals and after one-half (1⁄2) inch or greater rainfall events to insure that they are functioning properly. The person(s) responsible for maintenance of controls and fences shall immediately make any necessary repairs to damaged areas. Silt accumulation at controls must be removed when the depth reaches six (6) inches or one-third (1⁄3) of the installed height of the control whichever is less. 7. Prior to final acceptance by the City, haul roads and waterway crossings constructed for temporary contractor access must be removed, accumulated sediment removed from the waterway and the area restored to the original grade and revegetated. All land clearing debris shall be disposed of in approved spoil disposal sites. 8. All work must stop if a void in the rock substrate is discovered which is; one square foot in total area; blows air from within the substrate and/or consistently receives water during any rain event. At this time it is the responsibility of the Project Manager to immediately contact a City of Austin Environmental Inspector for further investigation. In addition, if the project site is located within the Edwards Aquifer, the Project Manager must notify the Travis County Balcones Canyonlands Conservation Preserve (BCCP) by email at bccp@traviscountytx.gov. Construction activities within 50 feet of the void must stop. 9. Temporary and Permanent Erosion Control: All disturbed areas shall be restored as noted below: A. All disturbed areas to be revegetated are required to place a minimum of six (6) inches of topsoil [see Standard Specification Item No. 601S.3(A)]. Do not add topsoil within the critical root zone of existing trees. • Topsoil salvaged from the existing site is encouraged for use, but it should meet the standards set forth in 601S. An owner/engineer may propose use of onsite salvaged topsoil which does not meet the criteria of Standard Specification 601S by providing a soil analysis and a written statement from a qualified professional in soils, landscape architecture, or agronomy indicating the onsite topsoil will provide an equivalent growth media and specifying what, if any, soil amendments are required. • Soil amendments shall be worked into the existing onsite topsoil with a disc or tiller to create a well-blended material. The vegetative stabilization of areas disturbed by construction shall be as follows: : TEMPORARY VEGETATIVE STABILIZATION: 1. From September 15 to March 1, seeding shall be with or include a cool season cover crop: (Western Wheatgrass ( Pascopyrum smithii ) at 5.6 pounds per acre, Oats ( Avena sativa ) at 4.0 pounds per acre, Cereal Rye Grain ( Secale cereale ) at 45 pounds per acre. Contractor must ensure that any seed application requiring a cool season cover crop does not utilize annual ryegrass ( Lolium multiflorum ) or perennial ryegra ss ( Lolium perenne ). Cool season cover crops are not permanent erosion control. 2. From March 2 to September 14, seeding shall be with hulled Bermuda at a rate of 45 pounds per acre or a native plant seed mix conforming to Item 604S or 609S. A. Fertilizer shall be applied only if warranted by a soil test and shall conform to Item No. 606S, Fertilizer. Fertilization should not occur when rainfall is expected or during slow plant growth or dormancy. Chemical fertilizer may not be applied in the Critical Water Quality Zone. B. Hydromulch shall comply with Table 1, below. C. Temporary erosion control shall be acceptable when the grass has grown at least 11⁄2 inches high with a minimum of 95% total coverage so that all areas of a site that rely on vegetation for temporary stabilization are uniformly vegetated, and provided there are no bare spots larger than 10 square feet. D. When required, native plant seeding shall comply with requirements of the City of Austin Environmental Criteria Manual, and Standard Specification 604S or 609S Table 1: Hydromulching for Temporary Vegetative Stabilization NOTE: IF AT ANY TIME DURING C ONSTRUCTION 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] Material Description Longevity Typical Applications Application Rates 0—3 months Moderate slopes; from flat to 3:1 1,500 to 2,000 lbs per acre 70% or greater Wood/Straw 30% or less Paper or Natural Fibers 100% or any blend of wood, cellulose, straw, and/or cotton plant material (except no mulch shall exceed 30% paper) PERMANENT VEGETATIVE STABILIZATION: 1. From September 15 to March 1, seeding is considered to be temporary stabilization only. If cool season cover crops exist where permanent vegetative stabilization is desired, the grasses shall be mowed to a height of less than one-half (1⁄2) inch and the area shall be re-seeded in accordance with Table 2 below. Alternatively, the cool season cover crop can be mixed with Bermuda grass or native seed and installed together, understanding that germination of warm- season seed typically requires soil temperatures of 60 to 70 degrees. 2. From March 2 to September 14, seeding shall be with hulled Bermuda at a rate of 45 pounds per acre with a purity of 95% and a minimum pure live seed (PLS) of 0.83. Bermuda grass is a warm season grass and is considered permanent erosion control. Permanent vegetative stabilization can also be accomplished with a native plant seed mix conforming to Item 604S or 609S. A. Fertilizer use shall follow the recommendation of a soil test. See Item 606S, Fertilizer. Applications of fertilizer (and pesticide) on City-owned and managed property requires the yearly submittal of a Pesticide and Fertilizer Application Record, along with a current copy of the applicator's license. For current copy of the record template contact the City of Austin's IPM Coordinator. B. Hydromulch shall comply with Table 2, below. C. Water the seeded areas immediately after installation to achieve germination and a healthy stand of plants that can ultimately survive without supplemental water. Apply the water uniformly to the planted areas without causing displacement or erosion of the materials or soil. Maintain the seedbed in a moist condition favorable for plant growth. All watering shall comply with City Code Chapter 6-4 (Water Conservation), at rates and frequencies determined by a licensed irrigator or other qualified professional, and as allowed by the Austin Water Utility and current water restrictions and water conservation initiatives. D. Permanent erosion control shall be acceptable when the grass has grown at least 11⁄2 inches high with a minimum of 95 percent for the non-native mix, and 95 percent coverage for the native mix so that all areas of a site that rely on vegetation for stability must be uniformly vegetated, and provided there are no bare spots larger than 10 square feet. E. When required, native plant seeding shall comply with requirements of the City of Austin Environmental Criteria Manual, Items 604S and 609S. Table 2: Hydromulching for Permanent Vegetative Stabilization Material Description Longevity Typical Applications Application Rates Bonded Fiber Matrix (BFM) 80% Organic defibrated fibers 10% Tackifier 6 months Fiber Reinforced Matrix (FRM) 65% Organic defibrated fibers 25% Reinforcing Fibers or less 10% Tackifier On slopes up to 2:1 and erosive soil conditions 2,500 to 4,000 lbs per acre (see manufacturers recommendations) Up to 12 months On slopes up to 1:1 and erosive Soil conditions 3,000 to 4,500 lbs per acre (see manufacturers recommendations) 10. The contractor shall not dispose of surplus excavated material from the site without notifying the Development Services Department at 512-974-2278 at least 48 hours prior with the location and a copy of the permit issued to receive the material. REVISIONS / CORRECTIONS Number Description Revise (R) Add (A) Void (V) Sheet No.'s Total # of Sheets in Plan Set Net Change Imp. Cover (Sq-Ft) Date Imaged City of Austin Approval Date C. Where trees are close to proposed buildings, erect the fence to allow 6 to 10 feet of work space between the fence and the building; D. Where there are severe space constraints due to tract size, or other special requirements, contact the City Arborist at 974-1876 to discuss alternatives. Special Note: For the protection of natural areas, no exceptions to installing fences at the Limit of Construction line will be permitted. 7. Where any of the above exceptions result in a fence being closer than 4 feet to a tree trunk, protect the trunk with strapped-on planking to a height of 8 ft (or to the limits of lower branching) in addition to the reduced fencing provided. 8. Trees approved for removal shall be removed in a manner which does not impact trees to be preserved. 9. Any roots exposed by construction activity shall be pruned flush with the soil. Backfill root areas with good quality top soil as soon as possible. If exposed root areas are not backfilled within 2 days, cover them with organic material in a manner which reduces soil temperature and minimizes water loss due to evaporation. 10. Any trenching required for the installation of landscape irrigation shall be placed as far from existing tree trunks as possible. 11. No landscape topsoil dressing greater than 4 inches shall be permitted within the drip line of trees. No soil is permitted on the root flare of any tree. 12. Pruning to provide clearance for structures, vehicular traffic and equipment shall take place before damage occurs (ripping of branches, etc.). 13. All finished pruning shall be done according to recognized, approved standards of the industry (Reference the National Arborist Association Pruning Standards for Shade Trees available on request from the City Arborist). 14. Deviations from the above notes may be considered ordinance violations if there is substantial non-compliance or if a tree sustains damage as a result. APPENDIX P-4: - STANDARD SEQUENCE OF CONSTRUCTION The following sequence of construction shall be used for all development. The applicant is encouraged to provide any additional details appropriate for the particular development. 1. Temporary erosion and sedimentation controls are to be installed as indicated on the approved site plan or subdivision construction plan and in accordance with the Erosion Sedimentation Control Plan (ESC) and Stormwater Pollution Prevention Plan (SWPPP) that is required to be posted on the site. Install tree protection, initiate tree mitigation measures and conduct "Pre - Construction" tree fertilization (if applicable). 2. The Environmental Project Manager or Site Supervisor must contact the Development Services Department, Environmental Inspection, at 512-974-2278, 72 hours prior to the scheduled date of the required on-site preconstruction meeting. 3. The Environmental Project Manager, and/or Site Supervisor, and/or Designated Responsible Party, and the General Contractor will follow the Erosion Sedimentation Control Plan (ESC) and Storm Water Pollution Prevention Plan (SWPPP) posted on the site. Temporary erosion and sedimentation controls will be revised, if needed, to comply with City Inspectors' directives, and revised construction schedule relative to the water quality plan requirements and the erosion plan. 4. Rough grade the pond(s) at 100% proposed capacity. Either the permanent outlet structure or a temporary outlet must be constructed prior to development of embankment or excavation that leads to ponding conditions. The outlet system must consist of a sump pit outlet and an emergency spillway meeting the requirements of the Drainage Criteria Manual and/or the Environmental Criteria Manual, as required. The outlet system shall be protected from erosion and shall be maintained throughout the course of construction until installation of the permanent water quality pond(s). 5. Temporary erosion and sedimentation controls will be inspected and maintained in accordance with the Erosion Sedimentation Control Plan (ESC) and Storm Water Pollution Prevention Plan (SWPPP) posted on the site. 6. Begin site clearing/construction (or demolition) activities. 7. In the Barton Springs Zone, the Environmental Project Manager or Site Supervisor will schedule a mid-construction conference to coordinate changes in the construction schedule and evaluate effectiveness of the erosion control plan after possible construction alterations to the site. Participants shall include the City Inspector, Project Engineer, General Contractor and Environmental Project Manager or Site Supervisor. The anticipated completion date and final construction sequence and inspection schedule will be coordinated with the appropriate City Inspector. 8. Permanent water quality ponds or controls will be cleaned out and filter media will be installed prior to/concurrently with revegetation of site. 9. Complete construction and start revegetation of the site and installation of landscaping. 10. Upon completion of the site construction and revegetation of a project site, the design engineer shall submit an engineer's letter of concurrence bearing the engineer's seal, signature, and date to the Development Services Department indicating that construction, including revegetation, is complete and in substantial compliance with the approved plans. After receiving this letter, a final inspection will be scheduled by the appropriate City inspector. 11. Upon completion of landscape installation of a project site, the Landscape Architect shall submit a letter of concurrence to the Development Services Department indicating that the required landscaping is complete and in substantial conformity with the approved plans. After receiving this letter, a final inspection will be scheduled by the appropriate City inspector. 12. After a final inspection has been conducted by the City inspector and with approval from the City inspector, remove the temporary erosion and sedimentation controls and complete any necessary final revegetation resulting from removal of the controls. Conduct any maintenance and rehabilitation of the water quality ponds or controls. for driveway construction: the owner is responsible for all costs for relocation of, for construction within the right-of-way, a concrete permit is required. for the building permit, a signed and sealed letter shall be submitted to the city of Austin, 6. or damage to utilities. 7. 8. per the land development code, 25-12-3 1612.4, certifying that the structure is in accordance with asce 24, flood resistant design and construction. 9. materials or equipment will be delivered to the site from the landward side of this project. 10. approval of this site plan does not include building and fire code approval nor building permit approval. all work will occur within the limits of construction as shown on the plan, and that no General Notes: 1. This project is not located over the Edwards Aquifer recharge zone. 2. Deed restrictions or restrictive covenants are not applicable to this property. 3. A business or living quarter may not be constructed on a pier or similar structure extending into or above Lake Austin, except under a license agreement approved by the City Council (Section 25-2-1 176 (H)). 4. Contractor to verity utility locations and ground and flow line elevations before construction. 5. Environmental Inspector has the authority to add/or modify erosion/sedimentation controls on site to keep project in compliance with the City of Austin Rules and Regulations. 6. Approval of these plans by the City of Austin indicates compliance with applicable City regulations only. 7. Approval by other government entities may be required prior to the start of construction. The applicant is responsible for determining what additional approvals may be necessary. 8. All work on this project is to be accomplished via barge. There will be no site access by land, nor will any construction staging or materials storage be located on land. THE OWNER SHALL BE RESPONSIBLE FOR INSTALLATION OF THE OWNER/DEVELOPER OF THIS SUBDIVISION/LOT SHALL PROVIDE ● AUSTIN ENERGY HAS THE RIGHT TO PRUNE AND/OR REMOVE TREES, SHRUBBERY AND OTHER OBSTRUCTIONS TO THE EXTENT NECESSARY TO KEEP THE EASEMENTS CLEAR. AUSTIN ENERGY WILL PERFORM ALL TREE WORK IN COMPLIANCE WITH CHAPTER 25-8, SUBCHAPTER B OF THE CITY OF AUSTIN LAND DEVELOPMENT CODE. ● AUSTIN ENERGY WITH ANY EASEMENT AND/OR ACCESS REQUIRED, IN ADDITION TO THOSE INDICATED, FOR THE INSTALLATION AND ONGOING MAINTENANCE OF OVERHEAD AND UNDERGROUND ELECTRIC FACILITIES. THESE EASEMENTS AND/OR ACCESS ARE REQUIRED TO PROVIDE ELECTRIC SERVICE TO THE BUILDING AND WILL NOT BE LOCATED SO AS TO CAUSE THE SITE TO BE OUT OF COMPLIANCE WITH CHAPTER 25-8 OF THE CITY OF AUSTIN LAND DEVELOPMENT CODE. ● TEMPORARY EROSION CONTROL, REVEGETATION AND TREE PROTECTION. IN ADDITION, THE OWNER SHALL BE RESPONSIBLE FOR ANY INITIAL TREE PRUNING AND TREE REMOVAL THAT IS WITHIN TEN FEET OF THE CENTER LINE OF THE PROPOSED OVERHEAD ELECTRICAL FACILITIES DESIGNED TO PROVIDE ELECTRIC SERVICE TO THIS PROJECT. THE OWNER SHALL INCLUDE AUSTIN ENERGY'S WORK WITHIN THE LIMITS OF CONSTRUCTION FOR THIS PROJECT. ● REQUIRED BY THE NATIONAL ELECTRICAL SAFETY CODE, NATIONAL ELECTRICAL CODE, OSHA REGULATIONS, CITY OF AUSTIN RULES AND REGULATIONS AND TEXAS STATE LAWS PERTAINING TO CLEARANCES WHEN WORKING IN CLOSE PROXIMITY TO OVERHEAD POWER LINES AND EQUIPMENT. AUSTIN ENERGY WILL NOT RENDER ELECTRIC SERVICE UNLESS REQUIRED CLEARANCES ARE MAINTAINED. ALL COSTS INCURRED BY AE AS A RESULT OF AN OWNER’S FAILURE TO MAINTAIN REQUIRED CLEARANCES WILL BE CHARGED TO AND SHALL BE THE RESPONSIBILITY OF THE PROPERTY OWNER. ● LANDOWNER'S/DEVELOPER’S EXPENSE. THE PROPERTY OWNER IS RESPONSIBLE FOR MAINTAINING CLEARANCES ANY RELOCATION OF ELECTRIC FACILITIES SHALL BE AT NOTE: PORTIONS OF THIS PROJECT ARE LOCATED IN THE FEMA 100 YEAR FLOODPLAIN AS DEFINED FLOOD INSURANCE MAY BE REQUIRED. THE FEDERAL REGULATIONS FOR DEVELOPMENT IN A FLOODPLAIN CAN BE FOUND IN CHAPTER 44 OF THE CODE OF FEDERAL REGULATIONS (44 CFR). SHEET INDEX: 1 COVER SHEET 2 LAND STATUS DETERMINATION 3 PROPOSED SITE PLAN 4 ELEVATIONS 5 ELEVATIONS II 6 LANDSCAPE 3.6.2 STANDARD PLAN NOTE THE FOLLOWING PLAN NOTE SUMMARIZES THE CONTENTS OF THE ENVIRONMENTAL CRITERIA MANUAL AS IT RELATES TO TREE PROTECTION ON SITES WITH ACTIVE PERMITS: BEFORE CONSTRUCTION ALL TREES AND NATURAL AREAS SHOWN ON PLAN TO BE PRESERVED SHALL BE PROTECTED PER ECM 3.6.1. TREE PROTECTION SHALL BE INSTALLED PRIOR TO THE START OF ANY SITE WORK, INCLUDING DEMOLITION OR SITE PREPARATION. REFER TO ECM 3.6.1.A. FENCING FOR TREE PROTECTION SHALL BE CHAIN-LINK MESH WITH A MINIMUM HEIGHT OF 5 FEET AND SHALL BE INSTALLED AROUND OR BEYOND THE CRITICAL ROOT ZONE EXCEPT AS ALLOWED IN ECM 3.6.1.B.4. UNFENCED SECTIONS OF THE CRITICAL ROOT ZONE SHALL BE COVERED WITH MULCH AT A MINIMUM DEPTH OF 8 INCHES AND A MAXIMUM DEPTH OF 12 INCHES PER ECM 3.6.1.C. WHERE FENCING IS LOCATED 5 FEET OR LESS FROM THE TRUNK OF A PRESERVED TREE, TRUNK WRAPPING SHALL BE INSTALLED PER ECM 3.6.1.D. EROSION AND SEDIMENTATION CONTROLS SHALL BE INSTALLED AND MAINTAINED SO AS NOT TO CAUSE IMPACTS THAT EXCEED PRESERVATION CRITERIA LISTED IN ECM 3.5.3.D. DURING CONSTRUCTION TREES APPROVED FOR REMOVAL SHALL BE REMOVED IN A MANNER THAT DOES NOT EXCEED PRESERVATION CRITERIA FOR THE TREES TO REMAIN. REFER TO ECM 3.5.2 A. FENCING MAY NOT BE TEMPORARILY MOVED OR REMOVED DURING DEVELOPMENT WITHOUT PRIOR AUTHORIZATION. THE FENCED CRITICAL ROOT ZONE SHALL NOT BE USED FOR TOOL OR MATERIAL STORAGE OF ANY KIND AND SHALL BE KEPT FREE OF LITTER. REFER TO ECM 3.6.1.B.3. PRUNING SHALL BE IN COMPLIANCE WITH THE CURRENT ANSI A300 STANDARD FOR TREE CARE. AFTER CONSTRUCTION TREE PROTECTION SHALL BE REMOVED AT THE END OF THE PROJECT AFTER ALL CONSTRUCTION AND FINAL GRADING IS COMPLETE, BUT BEFORE FINAL INSPECTION. REFER TO ECM 3.6.1.A. LANDSCAPE INSTALLATION WITHIN THE CRZ OF PRESERVED TREES, INCLUDING IRRIGATION, SOIL AND PLANTINGS, SHALL NOT EXCEED PRESERVATION CRITERIA LISTED IN ECM 3.5.2. DOCUMENTATION OF TREE WORK PERFORMED MUST BE PROVIDED TO INSPECTOR PER ECM APPENDIX P-6. THIS LIST IS NOT EXHAUSTIVE. REFER TO APPROPRIATE ECM SECTIONS FOR FULL REQUIREMENTS. SOURCE: RULES NO. R161-21.22, 9-15-2021. APPENDIX P-6 - REMEDIAL TREE CARE NOTES AERATION AND SUPPLEMENTAL NUTRIENT REQUIREMENTS FOR TREES WITHIN CONSTRUCTION AREAS As a component of an effective remedial tree care program per Environmental Criteria Manual section 3.5.4, preserved trees within the limits of construction may require soil aeration and supplemental nutrients. Soil and/or foliar analysis should be used to determine the need for supplemental nutrients. The City Arborist may require these analyses as part of a comprehensive tree care plan. Soil pH shall be considered when determining the fertilization composition as soil pH influences the tree's ability to uptake nutrients from the soil. If analyses indicate the need for supplemental nutrients, then humate/nutrient solutions with mycorrh izae components are highly recommended. In addition, soil analysis may be needed to determine if organic material or beneficial microorganisms are needed to improve soil health. Materials and methods are to be approved by the City Arborist (512-974-1876) prior to application. The owner or general contractor shall select a fertilization contractor and ensure coordination with the City Arborist. Pre-construction treatment should be applied in the appropriate season, ideally the season preceding the proposed construction. Minimally, areas to be treated include the entire critical root zone of trees as depicted on the City approved plans. Treatment should include, but not limited to, fertilization, soil treatment, mulching, and proper pruning. Post-construction treatment should occur during final revegetation or as determined by a qualified arborist after construction. Construction activities often result in a reduction in soil macro and micro pores and an increase in soil bulk density. To ameliorate the degraded soil conditions, aeration via water and/or air injected into the soil is needed or by other methods as approved by the City Arborist. The proposed nutrient mix specifications and soil and/or foliar analysis results need to be provided to and approved by the City Arborist prior to application (Fax # 512-974-3010). Construction which will be completed in less than 90 days may use materials at 1⁄2 recommended rates. Alternative organic fertilizer materials are acceptable when approved by the City Arborist. Within 7 days after fertilization is performed, the contractor shall provide documentation of the work performed to the City Arborist, Planning and Development Review Department. P.O. Box 1088, Austin, TX 78767. This note should be referenced as item #1 in the Sequence of Construction. Site Plan Release Notes: The following site plan release notes are included in accordance with the City of Austin’s request. Applicant will comply with all applicable City of Austin requirements. 1. All improvements shall be made in accordance with the released site plan. Any additional improvements will require site plan amendment and approval of the Planning and Development Review Department. 2. All signs must comply with requirements of the Land Development Code. (Section 1 3-2, Article VII) 3. Additional electric easements may be required at a later date. 4. All existing structures shown to be removed will require a demolition permit from the City of Austin Planning and Development Review Department. 5. A development Permit must be issued prior to an application for building permit for non-consolidated or Planning Commission approved site plans. Engineer signature and seal per City code Section 25-2-1173 Signature and Seal___________________________________ Address____________________________________________ Phone_____________________________________________ SITE SPECIFIC NOTES XYTECH INVESTMENTS LLC OWNER: OWNER MAILING ADDRESS: 677 LAKEVIEW CANYON RD, WESTLAKE VILLAGE, CA 91362 PROPERTY ADDRESS: 3011 WESTLAKE DRIVE, AUSTIN TX 78746 LEGAL DESCRIPTION: LOT 71 PLUS ADJ PT LAKE SHORE ADDN DOCK CONTRACTOR: WATERSHED: WATERSHED CLASSIFICATION: WATER SUPPLY RURAL USE: ACCESSORY USE TO A SINGLE FAMILY RESIDENCE LAKE AUSTIN TBA LA RELATED PERMIT NUMBERS: NONE ZONING: SMART GROWTH ZONE: FLOOD PLAIN INFORMATION: The project is within the 100-yr flood plain as shown on F.E.M.A Firm number 48453C0435K EFFECTIVE ON 1/22/2020. DRINKING WATER QUALITY ZONE EXISTING SHORELINE LENGTH: ALLOWABLE DOCK WIDTH: PROPOSED DOCK WIDTH: PROPOSED DOCK LENGTH: PROPOSED DOCK FOOTPRINT: 105' 0" 21' 0" 21' 0" 88' 3" 1197 SQ FT Development Information: AQUA PERMITS LLC Owner: STEPHEN HAWKINS Address: 6504 BETTY COOK DRIVE, AUSTIN TX 78723 Owner’s representative responsible for plan alternate: Stephen Hawkins Person or firm responsible for erosion/sedimentation control maintenance: TBD Person or firm responsible for tree/natural area protection maintenance: TBD SUBMITTAL DATE: 1/12/2026 AQUA PERMITS LLC AUSTIN TEXAS DESIGN, PERMITTING, CONSULTING, Y MAS ON THE SHORE OF LAKE AUSTIN IN THE BEAUTIFUL STATE OF TEXAS, UNITED STATES OF AMERICA. PLANS PRODUCED IN CONJUNCTION WITH TEXAS REGISTERED PROFESSIONAL ENGINEERING FIRM: DANIEL P. HAMM F-23857 305 MARLY WAY, AUSTIN TX 78733 (512)-549-0560 K C O D E K A L T S E I E V R D E K A L T S E W W 1 1 0 3 1 1 0 3 6 4 7 8 7 S A X E T , I N T S U A SITE PLAN APPROVAL SHEET____OF____ FILE NUMBER_______________ ___________ APPLICATION DATE__________ APPROVED BY COMMISSION ON ___________ UNDER SECTION ____ OF CHAPTER ______OF THE CITY OF AUSTIN CODE DATE (LDC 25-5-81) ___________ CASE MANAGER____________ PROJECT EXPIRATION DATE (ORD.#970905-A) ________ DWPZ ____ DDZ ____ _________________________________________________ DIRECTOR, DEVELOPMENT SERVICES DEPARTMENT RELEASED FOR GENERAL COMPLIANCE______________ ZONING____________ REVISION 1______________________ CORRECTION 1_____________________ REVISION 2______________________ CORRECTION 2_____________________ REVISION 3______________________ CORRECTION 3_____________________ DEVELOPMENT SERVICES SIGNATURE_______________________ Final plat must be recorded by the project expiration date, if applicable. Subsequent site plans which do not comply with the Code current at the time of filing, and all required building permits and/or a notice of construction (if a building permit is not required) must also be approved prior to the project expiration date. DATE 6/24/2026 SCALE ENGINEER STAMP: DRAFTER AQUA PERMITS FILE SP-2025-0386D SHEET COVER SHEET 1 OF 6 NGINEER STAMP:NGINEER STAMP:INEER STAMP:ENGINEER STAMP:ITEM05/12 AQUA PERMITS LLC AUSTIN TEXAS DESIGN, PERMITTING, CONSULTING, Y MAS ON THE SHORE OF LAKE AUSTIN IN THE BEAUTIFUL STATE OF TEXAS, UNITED STATES OF AMERICA. PLANS PRODUCED IN CONJUNCTION WITH TEXAS REGISTERED PROFESSIONAL ENGINEERING FIRM: DANIEL P. HAMM F-23857 305 MARLY WAY, AUSTIN TX 78733 (512)-549-0560 K C O D E K A L T S E I E V R D E K A L T S E W W 1 1 0 3 1 1 0 3 6 4 7 8 7 S A X E T , I N T S U A DATE 6/24/2026 SCALE ENGINEER STAMP: DRAFTER AQUA PERMITS FILE SP-2025-0386D SHEET LSD 2 OF 6 NGINEER STAMP:NGINEER STAMP:INEER STAMP:ENGINEER STAMP:ITEM05/13 ipf N neighboring concrete driveway I E V R D E K A L T S E W t n e m e v a p f o e g d e LOT 71 6410 ipf LOT 72 6411 6412 6413 6414 6415 6416 0.7' 6417 6418 6419 RV PROPERTIES, LLC (1.049 Acre) Document No. 2013076105 RESIDENCE TO BE BUILT UNDER 2025-022980 PR MICHAEL A. SCHROEDER (1.054 Acre) Document No. 2016141222 10' PROPERTY LINE SETBACK COA AND FEMA FULLY DEVELOPED FLOODPLAIN LINE: 493.10' MSL 75' CWQZ SETBACK 10' PROPERTY LINE SETBACK NEIGHBORING 24" CYPRESS 6424 100% CRZ 100% CRZ 50% CRZ 25% CRZ 50% CRZ 25% CRZ k c e d d o o w 6423 6422 LOT 70 LAKE SHORE ADDITION Volume 3 Page 30 6424 EXISTING PLAN 1"=50' SCALE LOC FTC 10' PROPERTY LINE SETBACK INSTALL TREE PROTECTION FENCING L O C L O C T P 100% CRZ 100% CRZ 50% CRZ 25% CRZ 50% CRZ 25% CRZ 6423 BEGIN 10' OF NEW STACKED ROCK BULKHEAD (SEE DETAIL) END 10' OF NEW STACKED ROCK BULKHEAD (SEE DETAIL) 490 LAKE AUSTIN SHORELINE 492.8' MSL BEGIN 66' 8" OF NEW STACKED ROCK BULKHEAD (SEE DETAIL) 486 488 482 484 LIMITS OF CONSTRUCTION -PILINGS TO BE 6" ROUND STEEL DRIVEN TO REFUSAL -SUPPORTS TO BE 6" X 6" SQUARE STEEL TUBING FLOATING TURBIDITY CURTAIN C T F C O L C T F C O L 492 C T F C O L C T F C O L C T F C O L C T F C O L C T F T P T P L O C T P T P L O C T P T P L O C T P T P 6422 TP LOC TP T P L O C T P TP L O C T P T P T P L O C 6421 LOC FTC LOC FTC LOC FTC LOC FTC DOCK LIGHTING PER LDC 25-2-1175 6" 9'-9" 6" 21' 9'-9" 6" F T C C O L F T C C O L 100% CRZ 36'-10" 25' FTC FTC LOC LOC LOC 25% CRZ 13'-2" FTC LOC 50% CRZ FTC LOC 50' FTC LOC PILINGS WITHIN THE 50% CRZ WILL BE DRIVEN IN LOCATIONS LIKE-FOR-LIKE WITH EXISTING WOODEN PILINGS UPON THEIR REMOVAL END 66' 8" OF NEW STACKED ROCK BULKHEAD (SEE DETAIL) 10' PROPERTY LINE SETBACK PROPOSED PLAN 1"=10' SCALE I I L L A A L L A A K K Z Z O O N N E E N N G G A A U U S S T T N N I I SITE PLAN LEGEND LOC FTC SF TP LIMITS OF CONSTRUCTION FLOATING TURBIDITY CURTAIN SILT FENCING TREE PROTECTION SHORELINE PROPOSED BULKHEAD SITE PLAN NOTES: - ENVIRONMENTAL INSPECTOR HAS THE AUTHORITY TO ADD AND/OR MODIFY EROSION/SEDIMENTATION CONTROLS ON SITE TO KEEP PROJECT IN COMPLIANCE LAKE AUSTIN SHORELINE 492.8' MSL Property line extends to the West gradient bank of Colorado River 492 490 482 486 L L A A EXISTING BOAT DOCK AND BULKHEAD TO BE REMOVED AND REPLACED WITH PROPOSED BOAT DOCK AND BULKHEAD L L 488 484 A A WOODEN DECKING K K Z Z ALONG SHORELINE O O N N E TO BE REMOVED E N N G G A A U U EXISTING DOCK S S MAX EXTENSION: T T 84'4" FROM SHORELINE I I N N I I 6421 25% CRZ 50% CRZ 100% CRZ wood deck cinder block wall Property line extends to the West gradient bank of Colorado River - - - NO WATER OR WASTEWATER UTILITIES ARE PROPOSED WITH THIS DEVELOPMENT. ALL AREAS DISTURBED IN THE CRITICAL WATER QUALITY ZONE SHOULD BE WITH THE CITY OF AUSTIN RULES AND REGULATIONS. [LDC 25-2-183] - - RESTORED AS PER STANDARD SPECIFICATION 609.S. - - - - ALL WORK TO BE PERFORMED VIA BARGE NO DREDGE IS PROPOSED OR APPROVED WITH THIS SITE PLAN THE PROPOSED BOAT DOCK WILL BE AT LEAST 66% OPEN [LDC 25.2.1176(A)(8)(B) PERMANENT IMPROVEMENTS ARE PROHIBITED WITHIN THE SHORELINE SETBACK AREA [LDC 25-2-551(8)(3)] THE PROPOSED BOAT DOCK MUST COMPLY WITH ALL REQUIREMENTS OF LDC 25-2-1174("STRUCTURAL REQUIREMENTS"), AND MUST COMPLY WITH CHAPTER 25-12, ARTICLE 1 (UNIFORM BUILDING CODE) AND THE BUILDING CRITERIA MANUAL. PRIOR TO ISSUANCE OF THE BUILDING PERMIT, THE APPLICANT WILL TURN IN DOCUMENTATION THAT IS SIGNED AND SEALED BY A LICENSED PROFESSIONAL THAT STATES THAT THE BOAT DOCK COMPLIES WITH ASCE 24 (FLOOD RESISTANT DESIGN AND CONSTRUCTION) AS PER LDC 25-12 ARTICLE 3 OR INCLUDE THIS DOCUMENTATION DURING THE SITE PLAN REVIEW PROCESS. A BUSINESS OR LIVING QUARTER MAY NOT BE CONSTRUCTED ON A PIER OR SIMILAR STRUCTURE EXTENDING INTO OR ABOVE LAKE AUSTIN, EXCEPT UNDER A LICENSE AGREEMENT APPROVED BY THE CITY COUNCIL [SECTION 25-2-1176(H)]. - WUI ZONE C WUIC 506.8.2: BOAT DOCK WALKING SURFACES SHALL BE CONSTRUCTED OF APPROVED NON-COMBUSTIBLE MATERIALS OR IGNITION-RESISTANT MATERIALS THAT COMPLY WITH SECTION 503.2. BOAT DOCK ROOF ASSEMBLIES SHALL COMPLY WITH 505.2. LINE INDICATES POINT OF MAXIMUM EXTENSION INTO LAKE OF CURRENT BULKHEAD (AT AREAS INSIDE OF THE 50% CRZ OF PROTECTED TREES.) PROPOSED BULKHEAD TO BEGIN AT THIS POINT AS "LIKE FOR LIKE" REPLACEMENT. LINE INDICATES POINT OF CURRENT/PROPOSED SHORELINE 1' H X 2' L X ~1'6" W STACKED NATURAL LIMESTONE BOULDERS (NO SAW CUT, ROUGH SURFACE) REPLACING EXISTING SHEETPILE BULKHEAD. TO FOLLOW EXISTING GRADE, NO CUT/FILL PROPOSED (ELEVATION OF HIGHEST POINT: 494.3' MSL) MAX 2" EXTENSION INTO LAKE FROM EXISTING SHORELINE PROPOSED BULKHEAD DETAIL 1 4"=1' SCALE RIP RAP. D50=12" AS PER ECM 1.13.6.D AND STANDARD SPECIFICATION ITEM NO. 591S "RIPRAP FOR SLOPE PROTECTION" 2' BOARDS FENCE LOCATION PRIOR TO CLEARING, GRADING AND PAVING PERMEABLE PAVING AREA CURB FENCE LOCATION DURING PERMEABLE PAVING INSTALLATION TEMPORARY ACCESS ROAD, EXISTING ROADWAY OR EASEMENT AS APPROVED CRZ CRZ BOARDS WOOD CHIP MULCH AREA 100 mm - 150 mm (4"-6") DEPTH LINEAR CONSTRUCTION THROUGH TREES LIMIT OF CONTRUCTION LINE AS SHOWN ON PLAN NATURAL AREAS CRITICAL ROOT ZONE (C.R.Z) RADIUS = 12mm PER mm (1 FT. PER INCH) OF TRUNK DIAMETER TREES IN PAVING AREA MINIMUM NECESSARY WORK AREA (WOOD CHIP MULCH 100 TO 150 mm 4" TO 6" DEPTH) BLDG. ADD BOARDS STRAPPED TO TRUNK DUE TO CLOSENESS OF FENCE LESS THAN 1.5 m (5') FROM TRUNK TREES NEAR CONSTRUCTION ACTIVITY CURRENT/PROPOSED SHORELINE LAKE AUSTIN ELEVATION 492.8' MSL LAKE BED FLOOR 6" 494.0' 492.0' 490.0' SUBGRADE TO BE TAMPED TO AT LEAST 2' BELOW NATURAL GRADE AND 4") PLACED AND TAMPED MINIMUM 6" GRAVEL (3 1' GRAVEL WRAPPED IN FILTER FABRIC INDIVIDUAL TREE GROUP OF TREES CITY OF AUSTIN WATERSHED PROTECTION DEPARTMENT TREE PROTECTION FENCE LOCATIONS RECORD COPY SIGNED BY J. PATRICK MURPHY 11/16/99 ADOPTED THE ARCHITECT/ENGINEER ASSUMES RESPONSIBILITY FOR APPROPRIATE USE OF THE STANDARD STANDARD NO. 610S-1 AQUA PERMITS LLC AUSTIN TEXAS DESIGN, PERMITTING, CONSULTING, Y MAS ON THE SHORE OF LAKE AUSTIN IN THE BEAUTIFUL STATE OF TEXAS, UNITED STATES OF AMERICA. PLANS PRODUCED IN CONJUNCTION WITH TEXAS REGISTERED PROFESSIONAL ENGINEERING FIRM: DANIEL P. HAMM F-23857 305 MARLY WAY, AUSTIN TX 78733 (512)-549-0560 K C O D E K A L T S E I E V R D E K A L T S E W W 1 1 0 3 1 1 0 3 6 4 7 8 7 S A X E T , I N T S U A TREE SURVEY PERFORMED 12/13/22 BY HOLT CARSON SURVEYING SURVEYED: ● ● ● ● REMOVED ● ● ● ● ● ● ● ● ● MITIGATION: ● ● ● ● ● ● TOTAL APPENDIX F TREE INCHES SURVEYED: 254 HERITAGE TREE INCHES SURVEYED: 132 NON-APPENDIX F TREE INCHES SURVEYED; (INCLUDES INVASIVE AND NON-APP F): 0 INVASIVE TREE INCHES SURVEYED: 0 TOTAL APPENDIX F INCHES REMOVED: 0 HERITAGE TREE INCHES REMOVED: 0 TOTAL NON-APPENDIX F INCHES REMOVED; (INCLUDES INVASIVE AND NON-APP F): 0 INVASIVE INCHES REMOVED: 0 TOTAL DEAD, DISEASED, OR IMMINENT HAZARD (DDI) INCHES REMOVED: 0 DDI APPENDIX F INCHES REMOVED: 0 DDI HERITAGE TREE INCHES REMOVED: 0 DDI NON-APPENDIX F INCHES REMOVED: 0 DDI INVASIVE INCHES REMOVED: 0 TOTAL MITIGATION REPLACEMENT INCHES PLANTED: 3 TOTAL REPLACEMENT INCHES PLANTED ON SITE (PRIVATE TREES): 0 TOTAL REPLACEMENT ROW INCHES PLANTED: 0 PRIVATE INCHES OWED TO URBAN FOREST REPLENISHMENT FUND (UFRF): 0 PUBLIC INCHES OWED TO UFRF: 0 TOTAL NON-MITIGATION INCHES PLANTED ON SITE; [ECM 3.5.4]: 0 DATE 6/24/2026 SCALE VARIABLE ENGINEER STAMP: DRAFTER AQUA PERMITS FILE SP-2025-0386D SHEET SITE PLAN SHEET 3 OF 6 FLOATING TURBIDITY CURTAIN Floatation Water Surface Filter Cloth Skirt (Variable Depth) Ballast Chain Channel Bottom NGINEER STAMP:NGINEER STAMP:INEER STAMP:ENGINEER STAMP:ITEM05/14 PLAN VIEWS *THESE ELEVATIONS AND PLANS ARE FOR SCHEMATIC PURPOSES ONLY AND DO NOT CONSTITUTE A STRUCTURAL DESIGN. FULLY ENGINEERED SHOP DRAWINGS SHOULD BE PROVIDED TO THE EOR PRIOR TO CONSTRUCTION. AQUA PERMITS LLC AUSTIN TEXAS DESIGN, PERMITTING, CONSULTING, Y MAS ON THE SHORE OF LAKE AUSTIN IN THE BEAUTIFUL STATE OF TEXAS, UNITED STATES OF AMERICA. PLANS PRODUCED IN CONJUNCTION WITH TEXAS REGISTERED PROFESSIONAL ENGINEERING FIRM: DANIEL P. HAMM F-23857 305 MARLY WAY, AUSTIN TX 78733 (512)-549-0560 6" 9'-9" 6" 21' 9'-9" 6" 13'-2" 36'-10" 25' 50' K C O D E K A L T S E I E V R D E K A L T S E W W 1 1 0 3 1 1 0 3 6 4 7 8 7 S A X E T , I N T S U A FIRST FLOOR PLAN VIEW ROOF PLAN VIEW DATE 6/24/2026 3 16"=1' SCALE ENGINEER STAMP: DRAFTER AQUA PERMITS FILE SP-2025-0386D SHEET PLAN VIEWS 4 OF 6 NGINEER STAMP:NGINEER STAMP:INEER STAMP:ENGINEER STAMP:ITEM05/15 ELEVATIONS ELEVATIONS *THESE ELEVATIONS AND PLANS ARE FOR SCHEMATIC PURPOSES ONLY AND DO NOT CONSTITUTE A STRUCTURAL DESIGN. FULLY ENGINEERED SHOP DRAWINGS SHOULD BE PROVIDED TO THE EOR PRIOR TO CONSTRUCTION. 6"x6" CONTINUOUS (VERIFY FULL-HT) STEEL POSTS - VERIFY WITH STRUCTURAL HARDWOOD RAILING WITH METAL ROD GUARDRAIL PANELS PER CODE - REFER TO DETAIL 6"x12" INTERMEDIATE STEEL BEAMS AT PERIMETER BEAMS, WITH 6"X8" STEEL BEAMS AT INTERNAL BEAM LOCATIONS, IN ORDER TO ACCEPT RECESSED/FLUSH 4" THICK IPE WOOD DECKING - VERIFY WITH STRUCTURAL 6"x12" INTERMEDIATE STEEL BEAMS - VERIFY WITH STRUCTURAL PIER/FOUNDATIONS AT LAKE BED PER STRUCTURAL OPEN OPEN OPEN OPEN COFFER WALL - REFER TO EROSION & SEDIMENTATION CONTROLS PLAN FOR LOCATION HARDWOOD RAILING WITH METAL ROD GUARDRAIL PANELS PER CODE - REFER TO DETAIL PIER/FOUNDATIONS (VERIFY HEIGHT) AT STAIR LANDING - VERIFY WITH STRUCTURAL 6"x12" CONTINUOUS STEEL CROSS-BEAM BEYOND FOR LATERAL BRACING - VERIFY WITH STRUCTURAL 6"x6" CONTINUOUS (VERIFY FULL-HT) STEEL POSTS - VERIFY WITH STRUCTURAL HARDWOOD RAILING WITH METAL ROD GUARDRAIL PANELS PER CODE - REFER TO DETAIL 6"x12" INTERMEDIATE STEEL BEAMS - VERIFY WITH STRUCTURAL PIER/FOUNDATIONS AT LAKE BED PER STRUCTURAL 6"x12" INTERMEDIATE STEEL BEAMS AT PERIMETER BEAMS, WITH 6"X8" STEEL BEAMS AT INTERNAL BEAM LOCATIONS, IN ORDER TO ACCEPT RECESSED/FLUSH 4" THICK IPE WOOD DECKING - VERIFY WITH STRUCTURAL 3'-6" COA AND FEMA FULLY DEVELOPED FLOODPLAIN LINE: 493.10' MSL NOTES: ALL STRUCTURAL SIZES, MATERIALS, CONNECTIONS, AND FOUNDATIONS ARE PER STRUCTURAL ENGINEER VERIFY ALL GUARDRAIL AND RAILING SIZES AND DIMENSIONS PRIOR TO MATERIAL ORDER. BOAT DOCK TO BE AT LEAST 66% OPEN STRUCTURE HARDWOOD RAILING WITH METAL ROD GUARDRAIL PANELS PER CODE - REFER TO DETAIL METAL CLAD SKIRT WALL NOSE OF SLIP COFFER WALL - REFER TO EROSION & SEDIMENTATION CONTROLS PLAN FOR LOCATION PIER/FOUNDATIONS (VERIFY HEIGHT) AT STAIR LANDING - VERIFY WITH STRUCTURAL 4" THICK IPE WOOD DECK PLANKS WITH CONCEALED SUPPORT AND CONNECTIONS TO 2" X 12" STEEL STRINGERS - VERIFY WITH STRUCTURAL 6"x12" CONTINUOUS STEEL CROSS-BEAM BEYOND FOR LATERAL BRACING - VERIFY WITH STRUCTURAL 50' 28'-11" PILINGS TO BE 6" ROUND STEEL DRIVEN TO REFUSAL DREDGE: 25 CU YDS AREA SHOWN: 32 SQ FT. 21' WIDTH = 24.88 CU YDS-->25 CY WINDOWS PER PLAN HARDWOOD RAILING WITH METAL ROD GUARDRAIL PANELS PER CODE - REFER TO DETAIL NOTES: ALL STRUCTURAL SIZES, MATERIALS, CONNECTIONS, AND FOUNDATIONS ARE PER STRUCTURAL ENGINEER VERIFY ALL GUARDRAIL AND RAILING SIZES AND DIMENSIONS PRIOR TO MATERIAL ORDER. BOAT DOCK TO BE AT LEAST 66% OPEN STRUCTURE. HARDWOOD RAILING WITH METAL ROD GUARDRAIL PANELS PER CODE - REFER TO DETAIL COFFER WALL - REFER TO EROSION & SEDIMENTATION CONTROLS PLAN FOR LOCATION NOTES: ALL STRUCTURAL SIZES, MATERIALS, CONNECTIONS, AND FOUNDATIONS ARE PER STRUCTURAL ENGINEER VERIFY ALL GUARDRAIL AND RAILING SIZES AND DIMENSIONS PRIOR TO MATERIAL ORDER. BOAT DOCK TO BE AT LEAST 66% OPEN STRUCTURE 6"x6" CONTINUOUS (VERIFY FULL-HT) STEEL POSTS - VERIFY WITH STRUCTURAL WINDOWS PER PLAN COFFER WALL PIER/FOUNDATIONS AT LAKE BED PER STRUCTURAL 6"x6" CONTINUOUS (VERIFY FULL-HT) STEEL POSTS - VERIFY WITH STRUCTURAL WINDOWS PER PLAN COFFER WALL - REFER TO EROSION & SEDIMENTATION CONTROLS PLAN FOR LOCATION PIER/FOUNDATIONS AT LAKE BED PER STRUCTURAL AQUA PERMITS LLC AUSTIN TEXAS DESIGN, PERMITTING, CONSULTING, Y MAS ON THE SHORE OF LAKE AUSTIN IN THE BEAUTIFUL STATE OF TEXAS, UNITED STATES OF AMERICA. PLANS PRODUCED IN CONJUNCTION WITH TEXAS REGISTERED PROFESSIONAL ENGINEERING FIRM: DANIEL P. HAMM F-23857 305 MARLY WAY, AUSTIN TX 78733 (512)-549-0560 K C O D E K A L T S E I E V R D E K A L T S E W W 1 1 0 3 1 1 0 3 6 4 7 8 7 S A X E T , I N T S U A DATE 6/24/2026 3 16"=1' SCALE ENGINEER STAMP: DRAFTER AQUA PERMITS FILE SP-2025-0386D SHEET ELEVATIONS 5 OF 6 NGINEER STAMP:NGINEER STAMP:INEER STAMP:ENGINEER STAMP:ITEM05/16 LANDSCAPE PLAN LANDSCAPE PLAN 32 AMERICAN WATER WILLOW INSTALL TREE PROTECTION FENCING 100% CRZ 100% CRZ LOC FTC L O C L O C T T P P L O C T T P P 1 BALD CYPRESS 20 EMORYS SEDGE COA AND FEMA FULLY DEVELOPED FLOODPLAIN LINE: 493.10' MSL 6423 50% CRZ 25% CRZ 50% CRZ 25% CRZ T T P P T T P P L O C T T P P T T P P L O C T T P P T T P P L O C T T P P T T P P L O C T T P P T T P P 6422 TP TP LOC TP TP TP TP 1 ROUGHLEAF DOGWOOD 3 BUSHY BLUESTEM BEGIN 10' OF NEW STACKED ROCK BULKHEAD (SEE DETAIL) 10' PROPERTY 10' PROPERTY LINE SETBACK LINE SETBACK END 10' OF NEW STACKED ROCK BULKHEAD (SEE DETAIL) LAKE AUSTIN SHORELINE 492.8' MSL 490 LAKE AUSTIN SHORELINE 492.8' MSL END 66' 8" OF NEW BEGIN 66' 8" OF NEW STACKED ROCK BULKHEAD STACKED ROCK BULKHEAD (SEE DETAIL) (SEE DETAIL) 486 488 482 484 THIS AREA REQUIRES NATIVE GRASSLAND SEEDING AND PLANTING PER CITY OF AUSTIN STANDARD SPECIFICATION 609S.5, INCLUDING TOPSOIL AND SEED BED PREPARATION, TEMPORARY IRRIGATION, AND WEED MAINTENANCE. PILINGS TO BE 6" ROUND STEEL DRIVEN TO REFUSAL LIMITS OF CONSTRUCTION FLOATING TURBIDITY CURTAIN C O C L T F C O C L T F 492 C O C L T F C O C L T F C O C L T F C O L C T F C O L C T F C O L C T F LOC FTC LOC FTC LOC FTC LOC FTC T T P P L T T O P P C T T P P TP TP L O C T T P P T T P P T T P P L O C T T P P 25% CRZ 13'-2" FTC LOC 50% CRZ 50' FTC LOC FTC LOC FTC LOC 6421 36'-10" 25' FTC 100% CRZ FTC LOC LOC LOC LOC FTC 6" 9'-9" 6" 21' 9'-9" 6" FTC F T C C O L F T C C O L F T C C O L DOCK LIGHTING PER LDC 25-2-1175 PILINGS WITHIN THE 50% CRZ WILL BE DRIVEN IN LOCATIONS LIKE-FOR-LIKE WITH EXISTING WOODEN PILINGS UPON THEIR REMOVAL END 66' 8" OF NEW END 66' 8" OF NEW STACKED ROCK BULKHEAD STACKED ROCK BULKHEAD (SEE DETAIL) (SEE DETAIL) 10' PROPERTY 10' PROPERTY LINE SETBACK LINE SETBACK LEGEND LOC FTC SF TP LIMITS OF CONSTRUCTION FLOATING TURBIDITY CURTAIN SILT FENCING TREE PROTECTION SHORELINE PROPOSED BULKHEAD PLANTING MITIGATION CALCULATIONS 609S RESTORATION • All disturbed areas within the shoreline setback shall be revegetated pursuant to 609s specifications, using 609s seeding and planting Area of impact is approximately 260 sf Planting criteria requires 1 native shade tree and 1 native understory • • tree/500 sq/ft of disturbed area. 260 sf = 1 shade tree, 1 understory tree and one native shrub per 100 sq/ft = 3 shrubs BULKHEAD MITIGATION • 77 lf of new bulkhead x2/3 lf = 52 plants PLANTING MITIGATION RULES • • • All plants to be sourced within a 200 mile radius of austin. Follow all guidelines found in the city of austin environmental criteria manual, Reference code sections ecm 1, 13.0, 1.10.4 (d), & item no. 609s as applicable TOTAL MITIGATION PLANTS REQUIRED = 57 PLANT MITIGATION LEGEND 1 Bald cypress (Taxodium distichum) CWQZ 1 Roughleaf dogwood (Cornus drummondii) CWQZ 3 Bushy Bluestem (Andropgon glomeratus) CWQZ 20 Emory’s Sedge (Carex emoryi) BULKHEAD 32 American Water Willow (Justicia americana) BULKHEAD 57 TOTAL PLANTINGS *ALL PLANTS WILL BE IN 1 GALLON CONTAINERS *ALL TREES WILL BE AT LEAST 1.5 INCHES IN DIAMETER AND AT LEAST 6' TALL. *IF A SPECIES IS NOT COMMERCIALLY AVAILABLE, SUBSTITUTION SPECIES CAN BE REVIEWED AND APPROVED BY THE WETLAND BIOLOGIST REVIEWER AQUA PERMITS LLC AUSTIN TEXAS DESIGN, PERMITTING, CONSULTING, Y MAS ON THE SHORE OF LAKE AUSTIN IN THE BEAUTIFUL STATE OF TEXAS, UNITED STATES OF AMERICA. PLANS PRODUCED IN CONJUNCTION WITH TEXAS REGISTERED PROFESSIONAL ENGINEERING FIRM: DANIEL P. HAMM F-23857 305 MARLY WAY, AUSTIN TX 78733 (512)-549-0560 K C O D E K A L T S E I E V R D E K A L T S E W W 1 1 0 3 1 1 0 3 6 4 7 8 7 S A X E T , I N T S U A DATE 6/24/2026 1 8"=1' SCALE ENGINEER STAMP: DRAFTER AQUA PERMITS FILE SP-2025-0386D SHEET LANDSCAPE PLAN 6 OF 6 NGINEER STAMP:NGINEER STAMP:INEER STAMP:ENGINEER STAMP:ITEM05/17