Review Of Plans For Nonmunicipal Wastewater Systems

01. Plan and Specification Approval. The Department reviews nonmunicipal wastewater system plans and specifications external to in-plant processes to ensure compliance with this chapter. The construction of any new, or material modification of an existing, nonmunicipal wastewater system must not begin before plans and specifications for the proposed facility have been submitted to and approved by the Department. Aquaculture facilities must submit plans and specifications for construction, modification, or expansion of waste treatment or disposal facilities for review and approval consistent with Section 39-118(5), Idaho Code. Infrastructure for water conveyance or aquatic organism husbandry within an aquaculture facility, prior to its discharge or diversion to waste treatment or disposal facility, does not require engineering design submittal under these rules. (7-1-26) 02. Deviations from Approved Plans. No material deviations may be made from the approved plans and specifications without prior approval from the Department. (7-1-26) 03. Engineer’s Seal. Plans and specifications submitted to the Department must be prepared by or under the supervision of an Idaho licensed professional engineer and be sealed, signed, and dated by the professional engineer in responsible charge of their preparation. Construction must be observed by an Idaho licensed professional engineer or a person under the supervision of an Idaho licensed professional engineer. (7-1-26) 04. Record Plans and Specifications. (3-31-22) a. Must be submitted to the Department as specified in Section 39-118(3), Idaho Code. (7-1-26) IDAHO ADMINISTRATIVE CODE IDAPA 58.01.16 Department of Environmental Quality Wastewater Rules Section 409 Page 16 b. Record plans and specifications, or a statement submitted in lieu of record plans and specifications, must be sealed, signed, and dated by the professional engineer in responsible charge of their preparation. (3-31-22) 05. Exception. The Department can waive the plan and specification approval described in Subsection 401.01 for any facility or category of facilities which will have no significant impact on the environment or on public health. (7-1-26) 06. Department Approval On-site During Construction. The owner must maintain a copy of the approved plans and specifications and the approval letter from the Department on-site during construction at all times. (7-1-26) 07. Applicability of Standards. The facility and design standards for municipal wastewater systems set out in these rules do not apply to nonmunicipal wastewater systems covered under Section 401. All plans and specifications submitted pursuant to Section 401.01 must conform in style and quality to regularly accepted engineering standards and applicable guidance and include the basis of design information and applicable design criteria. (7-1-26) 402. -- 408. (RESERVED)