It is important to read the permit prior to beginning construction for any details or additional inspections that may be specific to the project. Minimum system size for the tank and soil treatment area will be noted on the permit.During the peak building season a longer turnaround may be expected. If the application meets the Larimer County OWTS Regulations and the results of the site inspection are acceptable, a permit will be issued in approximately 5 days from the time the application was received.During winter months, site inspections and inspections of soil test pits may be delayed due to weather. To prevent accidents or injury, secure the opening of the test pit with fencing, stakes, or other appropriate measures. The site must be marked with the address, and soil test pits must remain open for inspection during the site inspection. After applying for the permit, a site inspection will be made on the property by Department staff to determine the suitability of the site, inspect the test pits, and review soils report information. The plot plan may be hand drawn, but must identify property lines, existing structures, area of the proposed system, and approximate location of soils tests (percolation test and/or soil test pits). A plot plan must be submitted with the application for all permit types (example on opposite page).Sites where the proposed soil treatment area is on a slope of 30% or more. Areas where the depth to bedrock or seasonally high groundwater is 4 feet or less below existing grade. Under the following conditions the system must be designed by a professional engineer Sites with a percolation rate that does not fall between 5 and 60 minutes per inch, or in soil types 0, 3A, 4, 4A, or 5. This may be included as part of the soils report, or for conventional, non-engineered systems provided separately. The sketch plan contains basic calculations for the proposed system, and a plan of how the system will be installed. For New System permits a soils report and sketch plan must be submitted with the application.Permit fees for each type of permit are listed at the top of the application form, payment is due at the time of application.A copy of the soils test report, design document, plot plan and engineer's design (if necessary) must be submitted with the application. Fill out an OWTS Permit Application and bring it in to either the Fort Collins, or Estes Park address listed above.If test pits must be covered prior to applying for a permit a site evaluation may be requested, however a separate fee applies. The soils test pits must remain open for inspection by Larimer County as part of the application process. The soils test will consist of either percolation testing and two soil test pits, or two soil test pits dug in the area of the proposed soil treatment area. A soils test must be completed on the property prior to applying for the OWTS permit.Site Evaluation: Required only if test pits must be inspected prior to a permit being applied for.Remodel/Upgrade: Required for upgrades to the soil treatment area associated with building additions, basement finishes that increase the total number of bedrooms in a dwelling.See guidelines for "Limited Use Wastewater Systems" for more information on these systems. Sealed Vault: Required for the new installation or repair of a sealed vault, vaulted privy, composting toilet, or vault and composting toilet.Minor Repair: Required for replacement of a septic tank.Major Repair: Required for any repair that includes replacement, expansion or alteration to the soil treatment area.New System: Required for all new construction or new systems installed to serve secondary dwellings, shops, garages, barns, etc., where a sewer connection from a municipality or sewer district is not available within 400 feet.Codes, Policies, Ordinances & ResolutionsÄownload the OWTS Permit Application Instructions as a PDF Permit Types.
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