A. Review of plans and specifications by Director prior to construction. Plans and specifications for all proposed onsite wastewater system installations, repairs, or alterations that receive human excreta, must be submitted to the Director for review and approval prior to construction. Installation, operation and maintenance of these systems shall be in accordance with the approved plans and specifications. Where the owner desires deviation from this chapter, the proposed deviation shall be submitted to the Director for review and approval in accordance with this chapter.

B. Review of plans and specifications for a non-conventional onsite wastewater system prior to construction. Plans and specifications for all installations that receive human excreta, other than a conventional onsite wastewater system, must be submitted to the Director for review and approval prior to construction. Installation and operation of these systems shall be in accordance with the approved plans and specifications. A conventional individual onsite wastewater system may be designed and installed in accordance with this chapter, without submission of project plans and specifications to the Secretary for review and approval. Where deviation from this chapter is desired by the owner, the proposed deviation shall be submitted to the Director for review and approval in accordance with the terms of this chapter, along with plans, specifications, and supporting information prepared by a registered professional engineer or licensed plumber.