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DEQ presents overhaul of septic rules: setbacks revised, installer bonds increased, guidance to be codified
Summary
The Department of Environmental Quality presented and won committee approval for a comprehensive rewrite of IDAPA 58.01.03 governing on-site wastewater (septic) systems, including higher installer bonds, a higher minimum tank size, and a move of parts of the Technical Guidance Manual into rule.
The Department of Environmental Quality (DEQ) presented a comprehensive rewrite of IDAPA 58.01.03 — the state rules governing on-site decentralized wastewater disposal — and the committee approved the rulemaking after presentation and questions.
Mary Ann (Maryann) Nelson, Surface and Wastewater Division Administrator for DEQ, summarized the rewrite (docket 5801032301) as a “critical and comprehensive review” aimed at reducing regulatory burden, increasing clarity and streamlining the chapter. DEQ said it removed archaic language (for example, replacing “shall” in many places), cut over 1,000 words from the chapter, revised definitions, simplified permitting and approval processes, and identified technical guidance manual (TGM) provisions that should be moved into rule.
Major substantive changes Nelson highlighted include: - Definitions: Several new or revised terms were added (for example: alternative system, standard system, extended treatment package system, proprietary wastewater treatment product). - Tank and product submittals: The rule requires product and tank submittals to be stamped by a licensed…
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