R317-4-5. Plan Review and Permitting

5.1. Plan Review and Permitting.

A. Designer Certification.

All plans and specifications shall be prepared by an individual certified in accordance with Rule R317-11.

B. Domestic Wastewater.

Plans and specifications for the construction, alteration, extension, or change of use of onsite wastewater systems that receive domestic wastewater shall be submitted to the regulatory authority.

C. Non-Domestic Wastewater.

Plans and specifications for the construction, alteration, extension, or change of use of onsite wastewater systems that receive non-domestic wastewater shall be submitted to and approved by the local health department having jurisdiction and the division.

D. Construction Permit Required.

The regulatory authority shall review said plans and specifications as to their adequacy of design for the intended purpose, and shall, if necessary, require such changes as are required by these rules. When the reviewing regulatory authority is satisfied that plans and specifications are adequate for the conditions under which a system is to be installed and used, a construction permit shall be issued to the individual making the submittal.

1. Construction may not commence until the construction permit has been issued by the regulatory authority.

E. Information Required.

Plans submitted for review shall be drawn to scale, 1" = 10', 20' or 30', or other scale as approved by the regulatory authority. Plans shall be prepared in such a manner that the contractor can read and follow them in order to install the system properly. Depending on the individual site and circumstances, or as determined by the regulatory authority, some or all of the following information may be required.

1. Applicant Information.

a. The name, current address, and telephone number of the applicant.

b. Complete address, legal description of the property, or both to be served by this onsite wastewater system.

2. Onsite Wastewater System Site Plan.

a. Submittal date of plan.

b. North arrow.

c. Lot size and dimensions.

d. Legal description of property.

e. Ground surface contours, preferably at 2 foot intervals, of both the original and proposed final grades of the property, or relative elevations using an established bench mark.

f. Location and explanation of type of dwelling or structure to be served by an onsite wastewater system.

i. Maximum number of bedrooms, including statement of whether a finished or unfinished basement will be provided, or if other than a single family dwelling, the number of occupants expected and the estimated gallons of wastewater generated per day.

g. Location and dimensions of paved and unpaved driveways, roadways and parking areas.

h. Location and dimensions of the essential components of the wastewater system including the replacement area for the absorption system.

i. Location of all soil exploration pits and all percolation test holes.

j. Location of building sewer and water service line to serve the building.

k. Location of easements or drainage right-of-ways affecting the property.

l. Location of all intermittent or year-round streams, ditches, watercourses, ponds, subsurface drains, etc. within 100 feet of proposed onsite wastewater system.

m. The location, type, and depth of all existing and proposed non-public water supply sources within 200 feet of onsite wastewater systems, and of all existing or proposed public water supply sources within 1500 feet of onsite wastewater systems and associated source protection zones.

n. Distance to nearest public water main and size of main.

o. Distance to nearest public sewer, size of sewer, and whether accessible by gravity.

3. Statement with Site Plan.

Statement indicating the source of culinary water supply, whether a well, spring, non-public or public system, its location and distances from all onsite wastewater systems within 200 feet.

4. Site Assessment and Soil Evaluation.

Soil Logs, Percolation Test Certificates, or both.

a. Statement with supporting evidence indicating the maximum anticipated ground water table and the flooding potential for onsite wastewater system sites.

5. Relative Elevations.

Show relative elevations of the following, using an established bench mark.

a. Building drain outlet.

b. The inlet and outlet inverts of any septic tanks.

c. Septic tank access cover, including height and diameter of riser, if used.

d. Pump tank inlet, if used, including height and diameter of riser.

e. The outlet invert of the distribution box, if provided, and the ends or corners of each distribution pipe lateral in the absorption system.

f. The final ground surface over the absorption system.

6. System Design.

Details for said site, plans, and specifications are listed in Section R317-4-6.

a. Schedule or grade, material, diameter, and minimum slope of building sewer and effluent sewer.

b. Septic tank and pump tank capacity, design, cross sections, etc., materials, and dimensions. If tank is commercially manufactured, state the name and address of manufacturer.

c. Absorption system details, including the following:

i. details of drop boxes or distribution boxes, if provided;

ii. schedule or grade, material, and diameter of distribution pipes;

iii. length, slope, and spacing of each absorption system component;

iv. maximum slope across ground surface of absorption system area;

v. distance of absorption system from trees, cut banks, fills, or subsurface drains; and

vi. cross section of absorption system showing the:

(1) depth and width of absorption system excavation;

(2) depth of distribution pipe;

(3) depth of filter material;

(4) barrier material, i.e. synthetic filter fabric, straw, etc., used to separate filter material from cover; and

(5) depth of cover.

d. Pump, if provided, details as referenced in Section R317-4-14 Appendix B.

e. If an alternative system is designed, include all pertinent information to allow plan review and permitting for compliance with this rule.

F. Plans Submitted.

1. All applicants requesting plan approval for an onsite wastewater system shall submit a sufficient number of copies of the above required information to enable the regulatory authority to retain one copy as a permanent record.

2. Applications may be rejected if proper information is not submitted.