13.20.200 Completed site plan.
A. The site plan shall contain the information required for the design and location of the onsite wastewater system. At minimum, this will include a completed site plan with the percolation test data. The Director may also require a field evaluation or soil observation pit information prior to the approval of an onsite wastewater system construction permit. A site plan shall be required as part of each application and shall, as a minimum, provide the information outlined below:
1. Date of evaluation, names of property owners with the legal description, property lines and lot dimensions;
2. A map, drawn to scale or dimension, with a north arrow, and including:
a. Horizontal and vertical reference point of the proposed soil treatment area or areas, soil observations, soil borings, percolation tests, and distances from the proposed onsite wastewater system to all required setbacks, lot improvements, easements, ordinary high water mark of public waters, and percent slope;
b. The location of any unsuitable, disturbed or compacted areas; and
c. The access route for tank maintenance;
3. Location of proposed or existing:
a. Water supplies within 200 feet of proposed onsite wastewater system;
b. Section lines and rights-of-way on the lot;
c. Buildings or improvements on the lot; and
d. Buried water pipes within 25 feet of the proposed system;
4. Estimated depth of seasonally saturated layer or bedrock;
5. Flow determinations for the dwelling or other establishment;
6. Streams, creeks or other drainage channels within property boundaries, including any drainage right-of-way and any contemplated diversion thereof;
7. Floodplain designation and flooding elevation from published data or data that is acceptable to and approved by the Director or the Department;
8. Drainfield reserve areas; and
9. In some cases, where the plat may be large, an inset map showing a detailed description of the proposed onsite wastewater system may be required.
B. When the Director has determined that he or she does not have sufficient information for evaluation of an application or an onsite wastewater system, he or she may require additional tests or documentation, or may deny the application, if the prior requirements are not met.