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Item 6C (2)Ordinance 480Ordinance 480--YYYYYY Modifications toModifications to Zoning Ordinance 480 regardingZoning Ordinance 480 regarding OnOn--Site Sewage Facilities (OSSF)Site Sewage Facilities (OSSF) How do OnHow do On--site Sewage Facilities Work?site Sewage Facilities Work? Anaerobic (Septic) SystemsAnaerobic (Septic) Systems Not appropriate for much Not appropriate for much •• of North Texas’ soilof North Texas’ soil 15% of today’s 15% of today’s •• installations are installations are traditional “septic” traditional “septic” systemssystems Greater potential for odor, Greater potential for odor, •• blockage, environmental blockage, environmental impact, etc.impact, etc. How do OnHow do On--site Sewage Facilities Work?site Sewage Facilities Work? Aerobic SystemsAerobic Systems 48 different designs on 48 different designs on •• the marketthe market Typically used with Typically used with •• spray headsspray heads Cleaner effluentCleaner effluent •• More equipment and More equipment and •• electricity use electricity use Costlier and more Costlier and more •• potential for failurepotential for failure OnOn--Site Sewage FacilitiesSite Sewage Facilities Existing RegulationExisting Regulation Lots within 100’ of available sewer service Lots within 100’ of available sewer service •• must connectmust connect Ordinance No. 514 (1990)Ordinance No. 514 (1990) Minimum lot size for septic system is 1 Minimum lot size for septic system is 1 •• acreacre Section 41.3, Zoning Section 41.3, Zoning Septic and spray fields must be shown on Septic and spray fields must be shown on •• Concept PlansConcept Plans Ordinance No. 480Ordinance No. 480 1 acre minimum exclusive of area within 1 acre minimum exclusive of area within •• Section 33.14, Zoning Section 33.14, Zoning floodplain, drainage & flowage floodplain, drainage & flowage easements, and “topographical easements, and “topographical Ordinance No. 480Ordinance No. 480 limitations”limitations” Section 8.01, Subdivision Section 8.01, Subdivision Refers to minimum lot area required by Refers to minimum lot area required by •• zoning ordinancezoning ordinance Ordinance No. 483Ordinance No. 483 TCEQ / Tarrant County TCEQ / Tarrant County Permitting & Inspections of onPermitting & Inspections of on--site site •• sewage facilitiessewage facilities Health Health Proposed Revisions Sections 33.14, 40.3, & 41.3 For properties proposing an onFor properties proposing an on--site sewage facility, a plan is required site sewage facility, a plan is required that shows the type and location of the onthat shows the type and location of the on--site sewage facility, site sewage facility, topography of the site, location of spray fields, all easements, impact topography of the site, location of spray fields, all easements, impact on any existing trees, and any additional information required by the on any existing trees, and any additional information required by the Authorized Agent responsible for onAuthorized Agent responsible for on--site sewage facility permitting site sewage facility permitting and inspections.and inspections. No building permit shall be issued until such plan has been reviewed No building permit shall be issued until such plan has been reviewed and approved by the Authorized Agent nor shall any certificate of and approved by the Authorized Agent nor shall any certificate of occupancy be issued until the system has been properly installed and occupancy be issued until the system has been properly installed and inspected by the Authorized Agent.inspected by the Authorized Agent.(As amended by Ordinance No. (As amended by Ordinance No. 480480--YYY)YYY) Proposed Revisions Section 4 AUTHORIZED AGENT RESPONSIBLE FOR ONAUTHORIZED AGENT RESPONSIBLE FOR ON--SITE SITE SEWAGE FACILITY PERMITTING AND INSPECTIONSSEWAGE FACILITY PERMITTING AND INSPECTIONS––The The individual, organization, or government entity contracted individual, organization, or government entity contracted with the City that is responsible for the proper with the City that is responsible for the proper implementation of Texas Health and Safety Code Chapter implementation of Texas Health and Safety Code Chapter 366 and Texas Administrative Code Chapter 285. (As 366 and Texas Administrative Code Chapter 285. (As amended by Ordinance No. 480amended by Ordinance No. 480--YYY)YYY) Citizen Input / Board Review P&Z Discussion: February 5, 2009 • P&Z Discussion: March 5, 2009 • SPIN Meeting –March 23, 2009 • P&Z Commission –April 9, 2009 • Approved as presented (7-0) – City Council 1 st Reading –May 19, 2009 • Approved as presented (7-0) – Questions?Questions? OnOn--Site Sewage FacilitiesSite Sewage Facilities Policy ConsiderationsPolicy Considerations Leach / Aeration Field SetbacksLeach / Aeration Field Setbacks •• Between 25’ and 50’Between 25’ and 50’ –– Drainage, Flowage, & Floodplain EasementsDrainage, Flowage, & Floodplain Easements •• Detailed OSSF plans for developments of __ Detailed OSSF plans for developments of __ •• lots or more or for Rlots or more or for R--PUDs, etc.PUDs, etc. Requiring maintenance contract for C.O.Requiring maintenance contract for C.O. •• Building Code:Building Code: •• Maximum distance under ground 8Maximum distance under ground 8--12 inches12 inches –– Air pressure gauge requirementsAir pressure gauge requirements ––