20200520-006b: Persimmons Construction Plans, C8-2019-0080.1B.SH variance packet

Environmental Commission – May 20, 2020

20200520-006b: Persimmons Construction Plans, C8-2019-0080.1B.SH variance packet — original pdf

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ITEM FOR ENVIRONMENTAL COMMISSION AGENDA COMMISSION MEETING DATE: May 20, 2020 NAME & NUMBER OF PROJECT: Persimmons Construction Plans C8-2019-0080.1B.SH NAME OF APPLICANT OR ORGANIZATION: Dario Octaviano, City of Austin Public Works (applicant) June Routh, Dunaway Associates (Engineer of Record) LOCATION: 7051 Meadow Lake Boulevard, Austin, TX 78744 COUNCIL DISTRICT: 2 ENVIRONMENTAL REVIEW STAFF: Jonathan Garner, Environmental Program Coordinator Development Services Department, (512) 974-1665, Jonathan.Garner@austintexas.gov WATERSHED: REQUEST: STAFF RECOMMENDATION: Onion Creek Watershed, Suburban, Desired Development Zone To cut more than four feet in depth within 100 feet of a classified waterway Staff does not recommend Staff Findings of Fact Variance to LDC 25-8-341 Development Services Department Staff Recommendations Concerning Required Findings Project Name: Ordinance Standard: Watershed Protection Ordinance Variance Request: C8-2019-0080.1B.SH Persimmons Construction Plans Request to vary 25-8-341 to allow cut of more than four feet within 100 feet of a classified waterway. Include an explanation with each applicable finding of fact. A. Land Use Commission variance determinations from Chapter 25-8-41 of the City Code: 1. Roadway construction crossing a classified waterway occurs all The requirement will deprive the applicant of a privilege available to owners of similarly situated property with approximately contemporaneous development subject to similar code requirements. No throughout the City of Austin utilizing methods that do not require a variance to City Code requirements. Denying the variance will result in the applicant selecting a different construction method; albeit potentially more expensive, yet a Code compliant construction method would not deprive the applicant of a privilege to construct a roadway crossing a classified waterway. 2. The variance: a) Is not necessitated by the scale, layout, construction method, or other design decision made by the applicant, unless the design decision provides greater overall environmental protection than is achievable without the variance; No. The applicant seeks to use a construction method using three 9 ft x 4 ft box culverts with headwalls and wingwalls along the banks of the creek channel that divert and concentrate flows through the box culverts. This type of construction method narrows the channel width at the roadway crossing, adversely impacts aquatic life habitat, increases the velocity of flows coming out of the box culverts, scours the bottom of the creek channel creating a pool, and modifies downstream flow patterns. Moreover, when placing the culverts, a significant amount of the natural stream bank soils and vegetation are cut away and disposed of offsite. Although the alignment of the connecting roadway is dictated by the existing roadway on the other side b) c) of the channel, a construction method that modifies the channel margins, alters the natural flow velocity, and removes hydric soils and vegetation does not provide greater overall environmental protection than a construction method that is achievable without the variance. Is the minimum deviation from the code requirement necessary to allow a reasonable use of the property; No. The amount of cut in excess of four feet required for the construction of the crossing occurs within the minimum setback of the waterway buffer and the erosion hazard zone adjacent to the classified waterway. Grading at a depth beyond that allowed by Code within these sensitive environmental areas does not constitute the minimum deviation from the code requirement. Does not create a significant probability of harmful environmental consequences. No. The grading associated with the placement of the concrete box culverts, headwalls, and wingwalls will remove soils and existing vegetation and destabilize the stream bank, alter the flow velocity in the channel resulting in downstream incising and bank erosion, and modify sediment deposition patterns. While erosion and sedimentation are natural processes, a construction method such as the one chosen can accelerate these processes beyond the rate at which the creek is naturally able to adjust for and manage. 3. Development with the variance will result in water quality that is at least equal to the water quality achievable without the variance. No. Bank erosion and sediment deposition are two leading causes of degraded water quality in creeks. Siltation can lead to murky water that smothers aquatic life habitat, reduces visibility for aquatic organisms to find food, prevents sunlight from reaching aquatic plants, and conveys other nutrients, pesticides, or toxic compounds that lower the water quality. The Land Use Commission may grant a variance from a requirement of Section 25-8- 422 (Water Supply Suburban Water Quality Transition Zone), Section 25-8-452 (Water Supply Rural Water Quality Transition Zone), Section 25-8-482 (Barton Springs Zone Water Quality Transition Zone), Section 25-8-368 (Restrictions on Development Impacting Lake Austin, Lady Bird Lake, and Lake Walter E. Long), or Article 7, Division 1 ( Critical Water Quality Zone Restrictions ), after determining that:: B. The criteria for granting a variance in Subsection (A) are met; 1. N/a The requirement for which a variance is requested prevents a reasonable, economic use of the entire property; The variance is the minimum deviation from the code requirement necessary to allow a reasonable, economic use of the entire property. 2. 3. N/a N/a Staff Determination: Staff determines that the findings of fact have not been met and recommends that the variance request be denied. Environmental Reviewer (DSD) _____________________________ Jonathan Garner Date 5/4/2020 Environmental Review Manager (DSD) _____________________________ Mike McDougal Date 5/4/2020 Environmental Officer (WPD) _____________________________ Chris Herrington Date ________________ 5/8/2020 Application Form Variance to LDC 25-8-341 March 9, 2020 ENVIRONMENTAL COMMISSION VARIANCE APPLICATION FORM June Routh on behalf of the City of Austin Public Works Dept (owner of ROW) 5707 Southwest Parkway, Ste 250, Bldg 2 Austin Texas 78735 512-399-5366 JRouth@DunawayAssociates.com Meadow Lake Blvd Street Extension – CIP # 6319.014 C8-2019-0080.1B.SH Meadow Lake Blvd – Between Misty Slope and Quicksilver Blvd PROJECT DESCRIPTION Applicant Contact Information Variance Case Information Name of Applicant Street Address City State ZIP Code Work Phone E-Mail Address Case Name Case Number Address or Location Environmental Reviewer Name Environmental Resource Management Reviewer Name Applicable Ordinance Watershed Name Watershed Classification Jonathan Garner LDC 25‐8‐42(D)(4) Onion Creek ☐Urban X Suburban ☐Water Supply Suburban ☐Water Supply Rural ☐ Barton Springs Zone City of Austin | Environmental Commission Variance Application Guide 1 March 9, 2020 Edwards Aquifer Recharge Zone ☐ Barton Springs Segment ☐ Northern Edwards Segment X Not in Edwards Aquifer Zones ☐ Yes X No Cut is directly in channel Edwards Aquifer Contributing Zone Distance to Nearest Classified Waterway Water and Wastewater service to be provided by AWU – project is a roadway construction including an irrigation meter for landscape but no domestic service. Request The variance request is as follows (Cite code references: Cut in excess of 4 ft but less than 8 ft within 100 ft of a classified waterway. LDC 25‐8‐ 42(D)(4). Existing ________ ________ ________ Proposed _________ _________ _________ The 362 sq ft area of cut in excess of 4 ft is within a manmade channel that drains an upstream detention pond. The cut is necessary to install three 9 ft x 4 ft box culverts with headwalls/wingwalls in the channel to allow paving of the Meadow Lake Blvd roadway across the channel. There are no trees with a diameter of 8” or larger in the area of proposed cut. There are no heritage trees with the LOC of the project. Impervious cover square footage: acreage: percentage: Provide general description of the property (slope range, elevation range, summary of vegetation / trees, summary of the geology, CWQZ, WQTZ, CEFs, floodplain, heritage trees, any other notable or outstanding characteristics of the property) City of Austin | Environmental Commission Variance Application Guide 2 March 9, 2020 Clearly indicate in what way the proposed project does not comply with current Code (include maps and exhibits) FINDINGS OF FACT The 362 sq ft area of cut in excess of 4 ft is necessary for installation of drainage culverts for the Meadow Lake Blvd Road extension project. A cut and fill exhibit is attached. A. 1. As required in LDC Section 25‐8‐41, in order to grant a variance, the Land Use Commission must make the following findings of fact: Include an explanation with each applicable finding of fact. Project: Meadow Lake Blvd Street Extension – CIP # 6319.014 Ordinance: LDC 25‐8‐42(D)(4) – Cut in excess of 4 ft within 100 ft of a classified waterway. Land Use Commission variance determinations from Chapter 25‐8‐41 of the City Code: The requirement will deprive the applicant of a privilege available to owners of similarly situated property with approximately contemporaneous development subject to similar code requirements. Yes / No City of Austin regulations require that for road crossing required for connectivity that a culvert be placed at the ditch crossing which meets the City’s Drainage Criteria. A minimum amount of grading is commonly required and allowed for such culvert application, which often exceeds 4 ft of cut or fill. 2. The variance: a) Is not necessitated by the scale, layout, construction method, or other design decision made by the applicant, unless the design decision provides greater overall environmental protection than is achievable without the variance; Yes / No to which the proposed roadway must be connected. The location of the roadway is dictated by the existing roadway City of Austin | Environmental Commission Variance Application Guide 3 March 9, 2020 Is the minimum deviation from the code requirement necessary to allow a reasonable use of the property; Yes / No The proposed grading results in a small area exceeding the cut limit and in a minimum departure from the code requirement. Does not create a significant probability of harmful environmental consequences. The cut area is located at the channel transition for the culvert Yes / No and would not result in additional site disturbance. Revegetation would be provided for all disturbed areas. 3. Development with the variance will result in water quality that is at least equal to the water quality achievable without the variance. Yes / No The minimal additional cut will facilitate the culvert without affecting water quality. b) c) Not Applicable B. **Variance approval requires all above affirmative findings. City of Austin | Environmental Commission Variance Application Guide 4 Applicant Exhibits Variance to LDC 25-8-341 5 8 4 5 8 5 4 8 5 3 8 5 1 7 5 1 7 5 572 0 7 5 5 7 5 3 7 5 584 5 8 5 6 8 5 581 5 8 5 N L E P O L S Y T IS M 585 586 P T E P T 587 587 P O O L T S O P D L O 5 8 5 7 8 5 V L B E T N E C O F M E O T V A P C W O K A L ' R 0 7 O ' F T L A H 4 4 P S A W O D SD P C R " 8 1 A E M S D P C R " 4 2 6 8 5 ) %(R .94 0 @ P C " R 4 2 P O T S W W 586 R D W O W O ' R 0 D 6 A E 585 M E U L B 6 8 5 7 8 5 5 8 8 587 W E D A IC R R A B 9 8 5 5 9 0 8 8 5 588 583 580 ) (R 0 .0 7 7 5 = L F 54" RCP @ 0.30%(R) 584 575 588 585 580 576 7 7 5 5 7 5 EXISTING WQ POND PER MEADOW LAKE SUBDIVISION CB-01-0112.18(SH) 5 8 4 5 8 5 584 5 8 5 6 8 5 581 5 8 5 N L E P O L S Y T IS M 585 586 P T E P T 587 587 8 8 5 ) (R 0 .0 7 7 5 = L F 5 7 8 584 583 580 6 8 5 7 8 5 5 8 8 587 W E D A IC R R A B 7 8 5 9 8 5 5 9 0 7 8 5 588 585 580 576 587 7 8 5 7 7 5 EXISTING WQ POND PER MEADOW LAKE SUBDIVISION CB-01-0112.18(SH) 575 5 7 5 4 7 5 5 7 4 9 7 5 5 8 5 6 8 5 4 8 5 5 8 5 4 8 5 W W 5 8 6 585 8 6 5 7 6 5 6 6 5 6 5 5 5 4 6 3 6 5 2 6 5 561 560 563 5 6 2 0 6 5 4 5 5 3 5 5 5 5 5 0 6 5 9 5 5 7 5 5 6 5 5 550 3 5 5 550 E IN L E IP P N IG S 0 7 5 5 6 5 2 6 5 3 6 5 EX TC FLOW PATH W W 5 7 5 0 7 5 5 6 5 R1 1.75 AC. W W EX TC FLOW PATH 4 5 5 E IN L E IP P 2 5 5 1 5 5 R2 0.37 AC. 0 5 5 E IN L E IP P N IG S 5 5 5 555 5 5 5 0 8 5 1 8 5 0 8 5 0 8 5 100YR ONION CREEK FEMA FLOODPLAIN E IN L E IP P N IG S 0 5 5 LEGEND DRAINAGE AREA BOUNDARY X XX AC. DRAINAGE AREA ID DRAINAGE AREA (ACRES) STORM DRAIN LINE E T E R C N O C 541 FLOW ARROW CRITICAL WATER QUALITY ZONE TIME OF CONCENTRATION PATH 5 4 5 8 4 5 0 5 5 1 5 5 5 5 1 5 5 0 2 5 5 5 5 1 5 4 7 5 4 8 5 5 2 100YR ONION CREEK COA FLOODPLAIN 548 2 5 5 9 4 5 1 5 5 0 5 5 P T E M G M E E T E R C N O C 550.43 550.40 550.21 7 4 5 8 4 5 W W 7 4 5 8 4 5 6 4 5 9 4 5 6 4 5 E D A IC R R A B 549 UNNAMED TRIBUTARY EX 100 YR FLOODPLAIN W ONE STORY OOD/BRICK BUILDING FFE551.11 550.40 UNNAMED TRIBUTARY PR 100 YR FLOODPLAIN W ONE STORY OOD/BRICK BUILDING FFE551.05 M G M E 5 5 0 550 E 550.07 T E R C N O C P T W WM WM 550.29 550.24 5 5 0 ONE STORY W BUILDING OOD FFE551.73 1 5 5 M G M E E T E R C N O C M EA DOW 550 ASPHALT PAVEMENT 44' FOC TO FOC P T P T M E 549.94 550.05 LA 64' ROW K 550.29 E BLV D WM 550.32 E T E R C N O C 551 552 E T E R C N O C 550 550.89 5 5 1 550.65 E T E R C N O C 5 5 2 553 5 5 3 FFE554.40 W ONE STORY OOD/BRICK BUILDING 551 M W T E E R T S 0 5 5 FFE554.66 W ONE STORY OOD/BRICK BUILDING 3 5 5 5 5 0 0 5 5 6 4 5 N IO T IP R C S E D N IO IS V E R E T A D Y B . V E R . O N W ONE STORY OOD/BRICK BUILDING SCALE: 1"= 50' 5 8 5 W W 5 7 0 9 6 5 5 6 4 5 6 5 0 8 5 5 7 5 570 572 575 9 COA REGIONAL .5 DETENTION POND 2 6 5 EXISTING CONDITIONS 5 7 5 3 7 5 0 8 5 1 8 5 PERSIMMON SITE PLAN SP-2018-0579C.SH 0 8 5 1 8 5 2 8 5 0 8 5 0 8 5 8 7 5 9 7 5 0 8 5 2 8 5 0 8 5 5 7 5 563 5 6 2 4 6 5 0 6 5 5 6 5 7 6 5 6 6 5 3 6 5 5 6 5 2 6 5 5 6 5 560 0 7 5 2 7 5 8 6 5 9 6 5 0 7 5 1 7 5 5 6 5 R1 1.75 AC. 0 7 5 W W 565 5 7 5 6 7 5 7 7 5 4 7 5 5 7 5 3 7 5 0 7 5 5 7 5 5 7 0 5 7 5 5 6 4 5 6 5 570 572 5 7 0 9 6 5 9 .5 2 6 5 575 OS1 3.16 AC. 7 5 5 5 7 5 OS1 3.16 AC. 7 5 5 5 6 3 557 4 5 5 6 5 5 5 5 5 EROSION HAZARD ZONE OS2 5 5 5 0.46 AC. 557 5 5 5 UNNAMED TRIBUTARY 100 YR FLOODPLAIN 5 5 5 5 5 5 559 0 6 5 CN= 98 FOR IMPERVIOUS COVER CN= 80 FOR OPEN SPACE E IN L CN= 77 FOR WOODS E IP P N IG S E IN L E IP P * N IG S 550 PROPOSED WQ & DETENTION POND E IN L E IP P N IG S 0 5 5 558 5 6 0 1 6 5 5 4 5 E T E R C N O C 541 5 4 5 5 4 7 5 4 8 5 4 5 5 4 5 8 4 5 7 4 5 0 5 5 1 5 5 5 5 1 5 5 0 2 5 5 5 5 1 7 4 5 100YR ONION CREEK FEMA FLOODPLAIN 5 5 2 548 WATER QUALITY POND SP-2018-0579C.SH 5 6 5 4 6 5 3 6 5 2 6 5 561 560 4 5 5 3 5 5 5 5 5 7 4 5 100YR ONION CREEK COA FLOODPLAIN 5 4 3 C O N C R E T E 3 - 3 6 " R C P TP " 18 S D 5 4 7 3 5 5 5 5 5 555 .5 4 5 5 0 6 5 9 5 5 3 6 5 2 6 5 1 6 5 7 5 5 0 6 5 6 5 5 9 5 5 8 5 5 7 5 5 SD 6 5 5 PROPOSED BOX CULVERT 552 4 5 5 E IN L E IP P N IG S 5 5 5 3 5 5 E IN L E IP P 2 5 5 R2 0.37 AC. 3 5 5 UNNAMED TRIBUTARY EX 100 YR FLOODPLAIN 549 5 4 5 550 7 4 5 8 4 5 6 4 5 2 5 5 9 4 5 1 5 5 6 4 5 0 5 5 P T E 5 5 1 550.43 W ONE STORY OOD/BRICK BUILDING FFE551.11 550.40 M G M E E T E R C N O C 550.40 550.21 0 5 5 9 4 5 5 4 5 2 5 5 1 5 5 2 5 5 0 5 5 UNNAMED TRIBUTARY PR 100 YR FLOODPLAIN W ONE STORY OOD/BRICK BUILDING FFE551.05 M G M E 5 5 0 550 E 550.07 T E R C N O C ONE STORY W BUILDING OOD FFE551.73 1 5 5 M G M E E T E R C N O C P T P T M E 549.94 550.05 0 5 5 7 4 5 8 4 5 W W E D A IC R R A B P T W WM WM 550.29 550.24 5 5 0 550 ASPHALT PAVEMENT 44' FOC TO FOC M EA DOW LA 64' ROW K 550.29 E BLV D WM 550.32 E T E R C N O C 551 552 E T E R C N O C 550 550.89 5 5 1 550.65 E T E R C N O C 5 5 2 553 5 5 3 FFE554.40 W ONE STORY OOD/BRICK BUILDING 551 M W T E E R T S 0 5 5 FFE554.66 W ONE STORY OOD/BRICK BUILDING W ONE STORY OOD/BRICK BUILDING M W 5 4 8 549 W W R E V L I 0 5 5 S K C I U Q D V L B W W 5 6 0 SD 555 E IN L E IP P N IG S PROPOSED 18" SD 5 5 5 555 3 5 5 4 5 5 5 5 5 5 5 5 5 5 5 PROPOSED 10' CURB INLETS 6 4 5 1 5 5 PROPOSED HOOD AND GRATE INLETS 2 5 5 2 5 5 3 5 5 3 5 5 5 5 0 0 5 5 6 4 5 4 5 5 4 5 5 5 5 5 OS2 0.46 AC. 4 5 5 6 5 5 5 5 5 EROSION HAZARD ZONE 557 5 5 5 E D T R IB U T A R Y D P L A IN R F L O O 5 5 5 U N N A M 10 0 Y 5 5 5 5 6 3 557 SITE PLAN APPROVAL SHEET 9 OF 58 FILE NUMBER: C8-2019-0080.1B.SH APPLICATION DATE: 4/11/18 APPROVED BY COMMISSION ON: UNDER SECTION 112 OF 558 CHAPTER 25-5 OF THE CITY OF AUSTIN CODE. EXPIRATION DATE (25-5-81, LDC) CASE MANAGER: DANIELLE GUEVARA PROJECT EXPIRATION DATE (OED #970905-A) DWPZ DDZ X 8 .5 1 6 5 COA REGIONAL DETENTION POND 8 .2 1 6 5 560 PROPOSED CONDITIONS 559 E IN L E IP P N IG S 5 6 0 1 6 5 Director, Development Services Department RELEASED FOR GENERAL COMPLIANCE: ZONING: NA E IN L E IP P N IG S NOTES: Rev.1: Rev.2: Correction 1: Correction 2: Rev.3: Final plat must be recorded by the Project Expiration Date, if applicable. Subsequent Site Correction 3: INLET & CULVERT CALCULATIONS 562 PROVIDED ON SHEETS SD1 & CL1. 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. SHEET NUMBER 9 OF 58 Texas Firm No. F-1114 TBPLS Firm No. 10065900 5707 Southwest Parkway Building 2, Suite 250 Austin, TX 78735 Phone: 512-306-8252 N IO S N E T X E T E E R T S D V L B E K A L W O D A E M 4 1 .0 9 1 3 6 # IP C D E S O P O R P & G N I T S I X E S P A M A E R A E G A N I A R D T A T E OF T E X A S S JUNE ROUTH P R O L F E S S I 64918 CENS E D IONAL E N G R E E N I 4/22/2020 0 1 2 1 IF THIS BAR DOES NOT MEASURE 1" THEN DRAWING IS NOT TO SCALE DRG1 UDG JOB NO. 17-935 C8-2019-0080.1B.SH n g d . 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O N O V 2 4 3 0 4 4 . 6 2 + 3 1 . a t S T P 5 8 5 6 8 5 MEADOW LAKE BLVD 5 7 5 5 8 5 4 8 5 2 8 5 1 8 5 0 8 5 9 7 5 8 7 5 7 7 5 6 7 5 13+00 14+00 15+00 0 8 5 580 SHEET 2 8 4 0 2 5 7 1 2 8 4 3 2 8 4 4 2 8 4 2 2 8 4 5 2 8 4 1 2 6 5 5 2 4 5 4 2 4 5 3 2 6 5 4 6 6 5 3 6 5 5 6 5 5 6 2 5 6 5 5 6 5 7 6 5 17+00 2 5 7 2 2 5 7 3 5 6 3 5 6 2 5 6 0 5 6 2 5 5 9 64 5 5 6 3 0 6 5 18+00 570 S2 5 7 5 4 7 5 3 7 5 2 7 5 1 7 5 0 7 5 9 6 5 8 6 5 0 7 5 16+00 5 6 5 W W 0 7 5 570 5 7 5 4 6 2 6 4 6 2 3 4 6 2 0 P C S t a . 1 4 + 9 6 . 7 2 575 570 9 6 5 588 6 8 5 B U R L D 5 8 8 7 8 5 589 2 8 5 4 7 5 576 5 7 9 5 8 5 W W 577 5 9 0 1 1 + 0 0 5 8 8 P U B LIC D R D O C AIN AG . N O U T ILIT E EAS . 2 0 0 Y & 2 0 EM EN T 0 0 8 1 5 8 5 7 8 5 5 8 0 5 7 6 & E N T . 2 0 0 2 0 0 0 8 1 P U B L IC U T IL IT Y D R A IN A G E E A S E M C . N O 5 7 4 D O 9 7 5 573 7 7 5 9 6 5 5 7 3 5 7 5 570 0 8 5 5 7 5 575 9 .5 2 6 5 3 6 5 5 6 1 562 562 8 .5 1 6 5 8 .2 1 6 5 3 .8 1 6 5 5 .0 3 6 5 . 2 0 0 2 0 8 9 7 7 8 5 65 564 A T E R A S T E W E N T E A S E M 15 ' W C . N O D O 570 572 E N T D R A IN A G E E A S E M L . 8 6 7 4 P G . 4 7 6 9 .2 8 7 A C R E S O V 0 6 5 575 5 6 5 566 1 .0 5 6 5 565 4 6 2 1 7 5 5 5 6 3 5 6 5 564 7 .0 5 6 5 8 .1 7 6 5 5 6 8 567 4 .4 9 6 5 577 578 2 .7 5 6 5 5 .1 4 6 5 7 .4 2 6 5 5 .0 4 6 5 3 6 5 1 .9 3 6 5 2 .8 2 6 5 1 .6 3 6 5 4 .4 3 6 5 4 4 4 5 4 4 4 6 4 4 4 7 T 5 4 5 4 4 4 8 4 4 7 9 550 9 4 5 V O 0 5 5 4 4 7 8 4 4 7 7 2 0 ' G A S E S M L .4 3 6 P G .3 10 .7 5 " N A T U R A L G A S ; P H IL L IP S 6 6 P IP E L IN E 2 4 " N A T U R A L G A S T R A N S M (A P P R O X . L O C A T IO N ) 5 5 0 R G A N O N ) N ; K IN D E R M IS S IO C A T IO X . L O (A P P R O P IP E L IN E S IG N 3 5 5 2 5 5 5 5 5 P IP E L IN E S IG N 4 5 5 0 5 5 6 4 5 551 7 4 5 8 4 5 6 4 5 E T E R C N O C 5 4 1 5 4 5 5 4 5 10 17 5 4 7 10 18 5 4 8 10 19 5 5 0 5 4 5 5 4 5 7 4 5 5 5 0 5 5 1 8 4 5 5 5 1 2 5 5 5 5 1 557 0 6 5 556 9 5 5 2 4 7 7 2 4 7 8 5 6 1 W W 19 +0 0 5 6 0 P IP E L IN E S IG N 4 5 3 9 P C C S t a . 18 + 4 0 .15 N S 4 5 9 4 E N T 4 5 9 1 4 5 9 2 560 4 5 8 8 4 5 9 3 N , U N IC A T IO 4 5 9 0 4 5 8 6 4 5 8 7 4 5 8 9 M M 15 ' E L E C T R IC D IS T R IB U T IO A N D E L E C T R IC F IB E R E A S E M E L E C T R IC T E L E C O (P E R P L A T ) 4 5 8 5 4 5 8 2 4 5 8 3 4 5 8 4 5 5 5 T E 553 554 E S D 7 5 5 2 0 + 0 0 6 5 5 H 5 5 5 S 8 5 5 S D 555 4 5 3 4 5 5 5 3 5 5 5 5 5 555 4 5 4 0 S 4 5 4 2 4 5 3 8 4 5 3 7 4 5 4 1 4 5 4 4 4 5 4 3 4 5 3 2 4 5 3 3 H 4 5 4 5 4 5 3 6 4 5 3 5 555 4 5 5 8 4 5 5 7 4 5 5 6 E 4 5 3 1 4 5 5 5 5 4 .5 4 5 5 9 4 5 6 0 E 5 5 4 4 5 5 556 5 5 5 D R O O C W 2 1 + 0 0 . N 0 O . 2 . 3 5 5 5 5 5 5 5 0 1 A 9 C 4 5 5 1 8 3 6 8 6 3 5 5 3 5 5 E IN L E IP P 2 5 5 2 5 5 2 5 5 6 4 5 0 5 5 9 4 5 5 4 5 2 5 5 552 1 5 5 0 5 5 2 2 + 0 0 A D E W W B A R R IC 1 5 5 M G 4 5 2 5 5 7 9 4 5 1 5 5 7 .5 ' P .U .E . B K .7 8 P G .3 8 3 E T E M E R C N O C 550.43 8 4 5 0 5 5 T P E 550.40 550.21 1002 W O O O D N / B E R S T I C O K R Y B U I L D I N G 550.40 FFE551.11 5 5 2 10 2 0 10 2 1 5 4 8 5 4 9 2 5 ' D R A I N A G E 5 & 4 5 P . U . E . V O L 7 8 P G 3 8 3 5 5 0 5 5 0 T P W M W W M 1003 550.29 5 5 0 1001 W O O O D N E / B S R T I C O 550.07 E T E R C N O C 550.24 1004 K R Y B U I L D I N G FFE551.05 M G M E 5 5 0 M G M E O N E S T B O U R I L Y D I N W G O O D 5 5 0 1005 T P E M T P 549.94 E T E R C N O C 550.05 T 3 5 5 3 5 5 550 6 54 550 555 5 550.89 5 0 5 5 1 550.65 E T E R C N O C 5 5 2 7 .5 ' P .U .E . B K .7 8 P G .3 8 3 5 5 3 S FFE554.40 5 5 3 W O O O D N / B E R S T I C O K R Y B U I L D I N G 3 2 3 + 0 0 W M 550.32 E T E R C N O C 550.29 FFE554.66 W O O O D N / B E R S T I C O K R Y B U I L D I N G 557 5 5 5 5 1 2 2 4 + 0 0 FFE551.73 5 5 1 5 5 0 1009 B R 5 4 9 W W E V IL W M D 548 V L P IP E L IN E S IG N P IP E L IN E S IG N E N T 555 D R A IN A G E E A S E M L . 8 6 7 4 P G . 4 7 6 9 .2 8 7 A C R E S 555 5 5 5 O V 558 1 6 5 5 6 0 562 E T E R C N O C W O O O D N E / B S R T I C O K R Y B U I L D I N G 5 5 1 W M S T R E E T 0 5 5 S 550 K IC U Q 3 B 15 ' P .U .E . V O L 7 8 P G 3 8 3 S 7 5 5 0 6 5 5 5 5 W W SITE PLAN APPROVAL SHEET 12 OF 58 FILE NUMBER: C8-2019-0080.1B.SH APPLICATION DATE: 4/11/18 APPROVED BY COMMISSION ON: UNDER SECTION 112 OF CHAPTER 25-5 OF THE CITY OF AUSTIN CODE. EXPIRATION DATE (25-5-81, LDC) CASE MANAGER: DANIELLE GUEVARA PROJECT EXPIRATION DATE (OED #970905-A) DWPZ DDZ X 557 9 5 5 566 5 4 5 6 4 5 SCALE: 1"= 50' H Texas Firm No. F-1114 TBPLS Firm No. 10065900 5707 Southwest Parkway Building 2, Suite 250 Austin, TX 78735 Phone: 512-306-8252 7 4 5 N IO S N E T X E T E E R T S D V L B E K A L W O D A E M 4 1 .0 9 1 3 6 # IP C - D V L B E K A L W O D A E M L L A R E V O T A T E OF T E X A S S JUNE ROUTH P R O L F E S S I 64918 CENS E D IONAL E N G R E E N I 4/22/2020 0 1 2 1 IF THIS BAR DOES NOT MEASURE 1" THEN DRAWING IS NOT TO SCALE S n g d . S - S - B L M \ s n la P n io t c u r t s n o C ) s n la P ( \ D A C \ 5 3 9 - 7 1 - A O C d lv B e k a L w o d a e M \ s t c e j o r P \ e iv r D a t a D \ a t a D \ r e v r e S \ \ 0 2 0 2 / 2 2 / 4 8 6 5 567 5 6 8 NOTES 5 7 4 1. CALL AUSTIN ONE CALL CENTER AT 1-800-545-6005 AND TEXAS STATE "ONE-CALL" AT 1-800-245-4545 FOR ALL EXISTING UTILITY AND OIL/GAS PIPELINE LOCATIONS PRIOR TO BEGINNING ANY WORK. Director, Development Services Department RELEASED FOR GENERAL COMPLIANCE: ZONING: NA Rev.1: Rev.2: Correction 1: Correction 2: Rev.3: Final plat must be recorded by the Project Expiration Date, if applicable. Subsequent Site Correction 3: 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. UDG JOB NO. 17-935 C8-2019-0080.1B.SH SHEET NUMBER 12 OF 58 June RouthSILVERSTONE PH. 1 SEC. 1 BK. 78 PG. 381 M WM WATER METER ONE STORY WOOD/BRICK BUILDING XXXXX WATER INTERSECTION MAP NO. LEGEND BOUNDARY / ROW WATER LINE- EXISTING WATER LINE- PROPOSED WATER VALVE FIRE HYDRANT WASTEWATER LINE- EXISTING WASTEWATER LINE- PROPOSED WW WASTEWATER MANHOLE STORM SEWER- EXISTING STORM SEWER- PROPOSED SD STORM SEWER MANHOLE E ELECTRIC MANHOLE UTILITY POLE STREET LIGHT OVERHEAD UTILITY UNDERGROUND UTILITY GAS LINE PAVEMENT REPAIR GEOTECH BOREHOLE BORES PER REPORT BY MLA LABS DATED 4/22/16 & 6/20/19 B- NOTES 1. CALL AUSTIN ONE CALL CENTER AT 1-800-545-6005 AND TEXAS STATE "ONE-CALL" AT 1-800-245-4545 FOR ALL EXISTING UTILITY AND OIL/GAS PIPELINE LOCATIONS PRIOR TO BEGINNING ANY WORK. 2. CONTRACTOR TO COORDINATE EXISTING UTILITY RELOCATION & ADJUSTMENT TO GRADE WITH APPROPRIATE CITY AND PRIVATE UTILITY PROVIDERS. N IO T IP R C S E D N IO IS V E R E T A D Y B . V E R . O N 0 5 5 P T E W W ADJUST MANHOLE TO PROPOSED FINISHED GRADE (ADJUSTMENT DETAILS, SHEETS DTL2 AND DTL3) 550 1002 1001 550.07 E T E R C N O C 550.43 550.40 550.21 7301 4" GAS WRAPPED STEEL 550 WM10026141 W WM WM 1003 550.29 P T WM10027011 550.24 1004 8" WW (80-0509) 23+00 8" DI (80-0509) B3 B3 550 550.89 5 5 1 550.65 E T E R C N O C 552 STA 22+84.83 END NEW STREET CONSTRUCTION BEGIN REPAVING 553 5 5 3 FFE554.40 ONE STORY WOOD/BRICK BUILDING L T S S A G 4 / 3 3 8 .3 G P 8 .7 K . B .E .U ' P .5 7 7300 WM 550.32 550.29 E T E R C N O C 25 DRAINAGE EASEMENT 9.287 ACRES VOL. 8674 PG. 476 SILVERSTONE PH. 1 SEC. 2 BK. 78 PG. 383 FFE554.66 STREET CURVE DATA C3= R=750.00' D=26°49'55" A=351.23' T=178.90' C=348.03' CB=S05°38'28"W ONE STORY WOOD/BRICK BUILDING 24 7 5 4 2 1 6 5 5 7 5 2 562 4 7 5 2 PERSIMMON SITE SP-2018-0579C.SH 562 3 6 5 18+00 15' ELECTRIC EASEMENT PER SUBD. PLAT ROW PER PERSIMMON SUBDIVISION PLAT 202000017 560 S 2 2 6 5 1 6 5 8 . 0 ' T Y P . 21.8' TYP. P C C S t a . 1 8 + 4 0 . 1 5 LOT 1 PERSIMMON 202000017 PROPOSED 2- 2" AE CONDUIT FOR NEW STREET LIGHTS, TYPICAL PROPOSED 17"x30" HANDHOLE, TYPICAL 7 5 5 0 6 5 5 5 5 STREET STA 20+00.00 PROPOSED 2- 10' CURB INLET (SHEET SD1) 6 5 5 9 5 5 19+00 B1 B1 B-17 W W 5 6 0 PROPOSED WQ / DETENTION POND SHEET PND1 DRAINAGE EASEMENT PER SUBD. PLAT LOT LINE LIMITS OF CITY TRACT CITY OF AUSTIN 24.694 ACRES VOL. 10759 PG. 488 552 ROW PER PARD DOC #2019183686 PROPOSED 5' WIDTH CONCRETE SIDEWALK DTL 432S-1/SHT DTL1 E IN L E IP P N IG S 7 4 5 8 4 5 6 4 5 9 4 5 5 4 5 6 4 5 9 4 5 1 5 5 2 5 5 3 8 .3 G P 8 .7 K . B .E .U ' P .5 7 M G B 3 S M E S A G 4 / 3 L T S E T E R C N O C ONE STORY WOOD/BRICK BUILDING 1 EXISTING STREET LIGHT FFE551.11 550.40 STREET STA 22+33.72 EX WW MH #23857 EX RIM=550.44 7 5 5 SD 8 5 5 6 5 5 5 5 5 4 5 5 PROPOSED SIDEWALK 3 5 5 MEADOW LAKE BLVD 20+00 C3 SD 21+00 ROW 0.35 AC DOC. NO. 2019183686 STREET PT STA 21+91.38 E IN L E IP P 2 5 5 B2 B2 4 5 5 PROPOSED SIDEWALK 3 5 5 PROPOSED WATER LINE, SHEET W STREET STA 20+26.14 INSTALL TYPE II DRIVEWAY 555 SHEET PND3 3 5 5 4 5 5 555 PZ2/552.86 PROPOSED 5' WIDTH CONCRETE SIDEWALK @ 2' FROM ROW DTL 432S-1/SHT DTL1 7 4 5 8 4 5 5 5 1 3 1 . 9 4 5 3 5 0 3 0 0 . 9 4 5 2 5 0 3 8 2 . 9 4 5 1 5 0 3 0 5 5 2 5 5 2 5 5 1 5 5 0 5 5 22+00 2 5 5 2 5 5 1 5 5 6 4 5 5 5 5 ROW S S A A G G L L A A R R U U T T A A N N " " 5 5 .7 .7 10 10 E IN L E IP P 6 6 S IP L IL H ; P S A G L A U R T A N " 5 .7 10 ) N IO T A C O . L X O R P P (A .5 4 5 5 8 7 4 2 7 7 4 2 STREET STA 18+91.56 EX WW MH #133953 EX RIM=555.89 PROPOSED RIM=558.40 ADJUST MANHOLE TO PROPOSED FINISHED GRADE (ADJUSTMENT DETAILS, SHEETS DTL2 AND DTL3) INSTALL 10 FT BIKE LANE WITH TERRA COTTA INTEGRATED PIGMENT N O 1 5 ' W E A S E M A S T E W . 2 0 0 2 0 8 9 7 7 8 E N T D O C . A T E R 4 9 5 4 1 9 5 4 2 9 5 4 0 9 5 4 5 5 5 50' PIPELINE EASEMENT VOL.994 PG.390 VOL.3616 PG.2191 E IN L E IP P N IG S E IN L E IP P N A L L E G A ; M N IO S IS M S N A R T IL O E D U R C " 18 ) N IO T A C O . L X O R P P (A 555 5 5 5 4 3 5 4 5 5 5 5 5 5 20' GAS ESMT VOL. 436 PG. 3 CITY OF AUSTIN 24.694 ACRES VOL. 10759 PG. 488 2 3 5 4 3 3 5 4 9 3 5 4 0 4 5 4 7 3 5 4 1 4 5 4 8 3 5 4 WARNING 2 4 5 4 HIGH-PRESSURE PIPELINE(S) Excavation and/or Construction Prohibited Without compliance with State One-Call , AND Without Written Permission From MAGELLAN PIPELINE COMPANY, L.P. 5 3 5 4 6 3 5 4 4 4 5 4 3 4 5 4 1 3 5 4 1 - B G IN R O B 0 4 . 5 5 5 L E 9 1 / 0 2 / 6 ' 2 . 6 PROPOSED GRADE LINE REPLACE SUBGRADE AND BACKFILL WITH CLSM ITEM 402S FOR 8FT WIDTH CENTERED ON EXISTING PIPELINE N A G R O M R E D IN ; K N IO S IS M S N A R T S A G L A R U T A N " 4 2 ) N IO T A C O . L X O R P P (A .11 2 5 . 5 L E .10 2 7 + 4 5 5 50' ASHLAND PIPE LINE ESMT VOL.3627 PG.629 3 5 5 3 5 5 UNNAMED TRIBUTARY PR 100 YR FLOODPLAIN UNNAMED TRIBUTARY EX 100 YR FLOODPLAIN 5 5 0 A M E F IN A L P D O O L F R Y 0 0 1 K E E R C N 6 IO 4 N O 5 0 5 5 B 3 S REPLACE SUBGRADE AND BACKFILL WITH CLSM ITEM 402S FOR 8FT WIDTH CENTERED ON EXISTING PIPELINE 2 - B G IN R O B 5 6 . 2 5 5 L E 9 1 / 0 2 / 6 K = 40 100.00' V.C. EX GRD- 35' RT CL EX GRD- CL EX GRD- 35' LT CL 3 - B G IN R O B 2 5 . 0 5 5 L E 9 1 / 0 2 / 6 7 .3 0 5 . 5 L E .10 2 7 + -2.99% -0.50% ASPHALT 1" BASE 13" CONCRETE CAP DETAIL D/SHEET DTL4 PAVEMENT OVER CULVERT TO BE CONCRETE ITEM 360- NO BASE OR SUBGRADE .10 2 2 + 2 . 2 A T I S P V 2 .6 0 5 5 N IO T A V 0 6 5 559 3 9 5 4 9 8 5 4 7 1 - B G IN R O B 6 1 / 2 2 / 4 N W O R B K R A D Y A L C Y A L C Y A R G T H IG L 5 6 0 8 8 5 4 7 8 5 4 2 S 560 558 556 554 552 550 548 546 544 542 540 N W O R B K R A D Y A L C E N O T S Y A L C Y A L C Y A R G T H IG L G IN S S O R C Y IT IL T U 0 3 . 1 0 + 9 1 W W G IN T IS X E " 8 3 2 . 0 6 5 N A L L E G A M IL O E D U R C X E " 8 1 G IN S S O R C Y IT IL T U 6 4 . 6 3 + 9 1 ' 2 . 8 ' 0 . 3 EX GRD- CL 560 558 556 554 552 550 548 546 6 6 S IP L IL H P S A G L A R U T A N X E " 5 7 . 0 1 G IN S S O R C Y IT IL T U 9 1 . 2 7 + 0 2 G IN S S O R C Y IT IL T U 3 1 . 4 4 + 0 2 B D S D E S O P O R P " 8 1 N W O R B K R A D Y A L C 6 2 . 4 5 5 N A G R O M R E D IN K S A G L A R U T A N X E " 4 2 G IN S S O R C Y IT IL T U 9 2 . 8 4 + 1 2 G IN S S O R C Y IT IL T U 2 7 . 7 0 + 0 2 1 A D S D E S O P O R P " 8 1 5 2 . 7 5 5 20+00 N W O R B K R A D Y A L C N IO T C U R T S N O C T E E R T S W E N D N E G IN V A P E R IN G E B 3 8 . 4 8 + 2 2 A T S ' 4 'x 9 - 3 D E S O P O R P 6 8 . 9 0 + 2 2 A T S T R E V L U C X O B 1 L C T E E H S 7 3 . 1 5 5 22+00 SITE PLAN APPROVAL SHEET 15 OF 58 FILE NUMBER: C8-2019-0080.1B.SH APPLICATION DATE: 4/11/18 544 APPROVED BY COMMISSION ON: UNDER SECTION 112 OF CHAPTER 25-5 OF THE CITY OF AUSTIN CODE. EXPIRATION DATE (25-5-81, LDC) CASE MANAGER: DANIELLE GUEVARA PROJECT EXPIRATION DATE (OED #970905-A) DWPZ DDZ X 542 Director, Development Services Department RELEASED FOR GENERAL COMPLIANCE: ZONING: NA Rev.1: Rev.2: Correction 1: Correction 2: Rev.3: Final plat must be recorded by the Project Expiration Date, if applicable. Subsequent Site Correction 3: 540 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 0 1 2 1 IF THIS BAR DOES NOT MEASURE 1" THEN DRAWING IS NOT TO SCALE S3 UDG JOB NO. 17-935 C8-2019-0080.1B.SH 18+50 19+00 21+00 23+00 approved prior to the Project Expiration Date. SHEET NUMBER 15 OF 58 SCALE: 1"= 20' H 1"= 2' V Texas Firm No. F-1114 TBPLS Firm No. 10065900 5707 Southwest Parkway Building 2, Suite 250 Austin, TX 78735 Phone: 512-306-8252 N IO S N E T X E T E E R T S D V L B E K A L W O D A E M 4 1 .0 9 1 3 6 # IP C 0 5 + 8 1 A T S E L I F O R P & N A L P D V L B E K A L W O D A E M 5 3 + 2 2 O T T A T E OF T E X A S S JUNE ROUTH P R O L F E S S I 64918 CENS E D IONAL E N G R E E N I 4/22/2020 n g d . 3 S - S - B L M \ s n la P n io t c u r t s n o C ) s n la P ( \ D A C \ 5 3 9 - 7 1 - A O C d lv B e k a L w o d a e M \ s t c e j o r P \ e iv r D a t a D \ a t a D \ r e v r e S \ \ 0 2 0 2 / 2 2 / 4 June RouthCITY OF AUSTIN 24.694 AC. VOL. 10759 PG. 488 CITY OF AUSTIN PARKLAND LIMITS OF CONSTRUCTION M A T C H L I N E 100' OFFSET FROM CHANNEL CENTERLINE PROPOSED DETENTION / WQ POND CHANNEL CENTERLINE TEMPORARY BERM FOR EROSION CONTROL TO BE USED UNTIL SITE IS DEVELOPED LIMITS OF CONSTRUCTION PERSIMMON SITE SP-2018-0579C.SH AN ADMINISTRATIVE ENVIRONMENTAL VARIANCE HAS BEEN GRANTED IN ACCORDANCE WITH LDC 25-8-42(B)(6), TO ALLOW FILL OF NOT MORE THAN EIGHT FEET IN THE DESIRED DEVELOPMENT ZONE. CUT / FILL TABLE AREA s.f. % LIMITS OF CONSTRUCTION 197,058 100 CUT: 4.0' - 8.0' 362 FILL: 4.0' - 8.0' 17,769 0.2 9.0 NOTE THERE IS NO PROPOSED CUT OR FILL GREATER THAN 8.0' ON SITE LIMITS OF CONSTRUCTION CITY OF AUSTIN 24.694 AC. VOL. 10759 PG. 488 CITY OF AUSTIN PARKLAND M A T C H L I N E LIMITS OF CONSTRUCTION PERSIMMON SITE SP-2018-0579C.SH AN ADMINISTRATIVE ENVIRONMENTAL VARIANCE HAS BEEN GRANTED IN ACCORDANCE WITH LDC 25-8-42(B)(6), TO ALLOW FILL OF NOT MORE THAN EIGHT FEET IN THE DESIRED DEVELOPMENT ZONE. 4 1 0 Texas Firm No. F-1114 TBPLS Firm No. 10065900 N 5707 Southwest Parkway O Building 2, Suite 250 Austin, TX 78735 I S Phone: 512-306-8252 N E T X E T E E R T S D V L B E K A L W O D A E M T I B H X E L L I F & T U C 9 1 3 6 # P C I . I T E O F TE X A S A S T JUNE ROUTH R E E 64918 ICE N S E SIONA L D E N G IN L P R O F E S THESE PLANS ARE UNDER REVIEW BY THE C.O.A. AND ARE NOT APPROVED FOR CONSTRUCTION. (THIS NOTE TO BE REMOVED ON FINAL, APPROVED PLANS.) 1 2 IF THIS BAR DOES NOT MEASURE 1" THEN DRAWING IS NOT TO SCALE June Routh