20240306-005: NW Area Lift Station Staff Presentation — original pdf
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Northwest Area Lift Station Improvements Great Hills Lift Station No.53 9009 ½ Spicebrush Drive SP-2022-0537C Brad Jackson Environmental Compliance Specialist Senior Development Services Department 2 Property Data Bull Creek Watershed Water Supply Suburban Watershed Classification Drinking Water Protection Zone Not located over Edwards Aquifer Recharge Zone Approximate 30,000 square-foot limits of construction on a 1.9-acre lot. Synopsis 3 Project is located behind a single-family home, accessed from a 300-foot-long driveway located along the property boundary of 2 single-family lots. The purpose of this project is to bring the lift station up to current COA standards and convert the existing dry pit/wet well duplex lift station to a single submersible lift station while addressing access improvements for maintenance vehicles in the event of an emergency repair. The new lift station will not be in the 100-yr floodplain. Variance Requests 4 To allow development in the CWQZ for a lift station per LDC 25-8-261 To allow construction of a building on a slope with a gradient of more than 25% per LDC 25-8-302(A)(1) To allow fill up to 14 feet for construction of a lift station exceeding the 4-foot limitation per LDC 25-8- 342 CWQZ and Floodplain Boundaries 5 Existing Lift Station Demolition 6 Structural Site Plan 12’x 20’ Building On Slopes 7 Site Construction For Lift Station 8 The lift station is located on areas of steep slopes, some exceeding 35% in grade. The fill up to14 feet is required to bring the elevation of the new lift station up to the level of the access drive Grading Exhibit 9 Proposed Lift Station 10 58’ feet Variance Recommendation and Conditions 11 Staff recommends the variances, having determined that the required findings of fact have been met. Staff also recommends and supports the following condition: • Provide structural containment of fill with a retaining wall Site Photos 12 13 14 15 16 17 18 19 THANK YOU