20211103-002b: 4315 City Park Water SER #5216 Memo — original pdf

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ITEM FOR ENVIRONMENTAL COMMISSION AGENDA November 3, 2021 4315 City Park Water Service Extension Request #5216 COMMISSION MEETING DATE: NAME & NUMBER OF PROJECT: NAME OF APPLICANT OR ORGANIZATION: Eddy Salazar, A New Hope Investments, LLC (applicant) Mauricio Quintero-Rangel, PE, Servant Engineering & Consulting, PLLC (engineer) LOCATION: 4315 City Park Road, Austin, Texas 78730 COUNCIL DISTRICT: Limited Purpose Jurisdiction (Adjacent to Council District 10) PROJECT FILING DATE: August 31, 2021 WPD/ENVIRONMENTAL STAFF: Kaela Champlin, Environmental Program Coordinator (512) 974-3443, kaela.champlin@austintexas.gov WATERSHED: REQUEST: STAFF DETERMINATION: Coldwater Creek Watershed, Water Supply Rural, Drinking Water Protection Zone Water Service Extension Staff recommend approval of this water service extension request.  MEMORANDUM October 25, 2021 Linda Guerrero, Chair, and Members of the Environmental Commission Kaela Champlin, Environmental Program Coordinator Watershed Protection Department TO: FROM: DATE: SUBJECT: 4315 City Park Water Service Extension Request #5216 Service Extension Requests (SER) located in the Drinking Water Protection Zone and outside of the City of Austin’s full purpose jurisdiction require Council approval and review by the Environmental Commission. Watershed Protection Department staff have completed the review for 4315 City Park Water Service Extension Request (SER) #5216 and recommend approval of the request. Site Overview The site consists of a tract of approximately 8.10 acres, located at 4315 City Park Road, north of Emma Long Metro Park. The property is in the City of Austin Limited Purpose Jurisdiction and Council District 10. The site is in the Coldwater Creek Watershed and classified as Water Supply Rural. The applicant is proposing to develop a single-family home. The lot was subdivided in in 2018 (JN & H Subdivision C8J-2016-0066.0A). The applicant is requesting a water SER with one Living Unit Equivalent (LUE) to serve the proposed single-family home. Development Impacts Water: The applicant is proposing to construct approximately 350 feet of 8-inch water main from the existing 8-inch water main in City Park Road and extend south along City Park Road to the subject tract, as shown on the attached map. Wastewater: The property is proposing to utilize an onsite septic facility for wastewater service and will be subject to Travis County Code and rules for on-site sewage facilities. 1  Environmental Impacts The property is in the Coldwater Creek Watershed and is classified as Water Supply Rural and is in the Drinking Water Protection Zone. The property has three critical environmental feature seeps (CEFs) and contains buffers for four additional CEF seeps on the adjacent property to the south. 7.26 acres of the property have a conservation easement agreement, preventing development of the area. Only 0.84 acres of the property can be developed on the western portion of the property adjacent to City Park Road. The property has received an administrative variance associated with the final plat from LDC 25- 8-281(B)/ City Code 30-5-281(B) for a residential lot to be located within 50 feet of a CEF. According to the approved administrative variance, the applicant will prevent loss of recharge to the seeps because the septic drain fields will be installed outside of the CEF buffer setbacks. No excavation shall occur within the buffer zones. No underground utility lines will be installed within either of the setback areas. Drainage from the proposed residences and driveway will be directed to the south/southeast, away from the seep point of the two closest CEFs. Drainage from this site will follow the existing topography. This should assure that the quality of drainage runoff is equal to what currently exists. Recommendation Staff review determined that due to the protections placed on the conservation easement, there are no significant environmental risks to extend service to the site. Therefore, the Watershed Protection Department staff recommend support for Water SER #5216. The attached information provides further detail on the applicant’s request. Please feel free to contact Kaela Champlin at (512) 974-3443 or kaela.champlin@austintexas.gov if you have any questions or comments about the proposed SER. cc: Colleen Kirk, P.E., Austin Water Katie Frazier, P.E., Austin Water Liz Johnston, Deputy Environmental Officer, Watershed Protection Department 2  WATER AND WASTEWATER SERVICE EXTENSION REQUEST FOR CONSIDERATION Name: 4315 City Park Service Requested: Water SER-5216 Hansen Service Request Number: 923955 Date Received: 06/03/2021 Location: 4315 CITY PARK RD AUSTIN TX 78730 Acres: 8.10 Land Use: SINGLE FAMILY LUE: 1 Alt. Utility Service or S.E.R. Number: Proposed OSSF Quad(s): E29 E30 Reclaimed Pressure Zone: N/A DDZ: NO Drainage Basin: LAKE AUSTIN Pressure Zone: GLENLAKE (GL3) DWPZ: YES Demand (Estimated Peak Hour): 2 GPM FIRE FLOW: 1,250 GPM Cost Participation: $0 % Within City Limits: 0 % Within Limited Purpose: 100 Description of Improvements: Applicant shall construct approximately 350 feet of 8-inch water main from the existing 8-inch water main (Project No. 2019-0010) in City Park Rd and extend south along City Park Rd to the subject tract, as approximately shown on the attached map. NOTE: Water demand and sprinkled fire flow requirement based on engineering calculations received from Mauricio Quintero-Rangel, P.E. of Servant Engineering & Consulting, PLLC on 8/13/2021. Approval of this Service Extension Request is subject to completion and acceptance of the improvements described above and the conditions set forth below: 1) Construction of all Service Extensions is subject to all environmental and planning ordinances. 2) Service Extensions are subject to the guidelines established in the Land Development Code, Chapter 25-9, Water and Wastewater Utility Service. 3) An approved Service Extension is not a reservation of capacity in the system, but is an acknowledgment of the intent to serve. Available capacity shall be confirmed at the time a development application is submitted. 4) The level of service approved by this document does not imply commitment for land use. 5) Public utility mains must meet City of Austin design and construction criteria and must be approved by Austin Water Engineering Review. 6) Approval of a building plan, sprinkler system design and installation drawings that meets the Fire Department requirements for fire control. 7) Proposed public water improvements will be dedicated to the City of Austin for ownership, operation, and maintenance. 8) Proposed public water improvements must be placed in the public right-of-way or approved utility easements. Utility easements must be approved by Austin Water Engineering Review and must be in place prior to construction plan approval. 9) The approved Service Extension will automatically expire 180 days after date of approval unless a development application has been accepted by the Development Services Department. The Service Extension expires on the date the development expires, or if approved, on the date the development application approval expires. ·. È( 8 M 0 O 0 U N T 7 9 B A 0 T T E N C I R 770 0 6 7 È( 8 5 0 12" È( ·. ·. WESTMINSTER GLEN AVE 12" ·. 0 0 9 8" 8 9 0 0 0 9 8 8 0 È( 8 7 0 7 4 0 7 1 0 7 0 0 6 9 0 7 1 0 7 3 0 7 2 0 0 7 7 830 0 9 7 STAFF PROPOSED APPROXIMATELY 325 FEET OF 8-INCH WATER MAIN 730 COLDWATER CREEK 0 5 7 0 8 7 7 8 0 6 " P L A N ·. T A È( I N ·. C V " 8 D K R R A Y P ·. CIT 8 6 0 8 " ·.·. 8 " È( ·. D30 È( ·. E30 " 6 0 7 0 8 6 8 8 2 0 8 " G L E N L A K E D R È( 7 7 0 7 1 0 8 1 0 850 8 6 0 870 830 E29 C O N N O R D29 EMMA LONG METRO PARK EMMA LONG METRO PARK 8 2 0 8 5 0 0 6 8 8 0 0 8 1 0 8 3 0 S C R E E K 780 0 200 400 800 1,200 Feet . W. S.E.R. Name: 4315 City Park W. S.E.R. Number: 5216 Utility Development Services Plotted 8/31/2021 690 720 710 680 6 7 0 0 0 7 0 5 7 0 6 7 0 0 8 8 4 0 EMMA LONG METRO PARK 8 4 0 8 5 0 P E A R C E R D 8 6 0 8 7 0 Subject Tract 100-yr FEMA Floodplain Full-Purpose City Limit 2-Mile ETJ Limited-Purpose City Limit This product is for informational purposes and may not have been prepared for or be suitable for legal, engineering, or surveying purposes. It does not represent an on-the-ground survey and represents only the approximate relative location of the property boundaries. This product has been produced by the City of Austin for the sole purpose of geographic reference. No warranty is made by the City of Austin regarding specific accuracy or completeness. 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