Committee adopts amendment to codify local stop-work authority for construction sites under 1 acre in SB 1037

Chairman Niemeyer convened the Environmental Affairs committee to consider Senate Bill 1037 and proposed Amendment 3, which addresses stormwater runoff control on construction sites smaller than one acre.

The amendment, explained by Representative Miller and co‑sponsor Senator Dorio, codifies language consistent with the Construction Stormwater General Permit (CSGP) and clarifies that Municipal Separate Storm Sewer System (MS4) providers — the local units of government responsible for stormwater — may issue written warnings and, if corrections are not made within 48 hours, may issue stop‑work orders on sites under one acre.

The amendment matters because it moves existing permit-based practices into statute for smaller sites. "This amendment really addresses that particular part of the CSGP," Representative Miller said, adding that the change "codifies what can already be done in the CSGP. So, we're taking it from a rule to codifying it." Senator Dorio said the local provider would issue a written warning and have the right to stop work if sediment or dust control measures were not implemented after 48 hours.

Committee members spent most of the debate focused on three points: whether codifying the CSGP adds or removes local authority, how the 48‑hour correction window would work in practice, and the potential enforcement burden on municipalities.

Several senators asked whether the amendment restricts a local government's ability to act immediately. Senator Tanner asked, "So why are we then why do we need the law?" Representative Miller and Senator Dorio replied that the amendment formalizes protections that locals and constituents sought so that enforcement authority and timelines are clear in statute. Miller said the 48 hours is consistent with the current CSGP and that local ordinances that are less restrictive than the CSGP would still be subject to the permit's timeline.

Senator Carrasco and other members raised hypothetical scenarios involving homeowners doing landscaping or small grading projects. Representative Miller and Senator Dorio said the definitions in the amendment are drawn from the CSGP and are intended primarily to address construction activity, and that ordinary small‑scale landscaping by homeowners would be an unlikely target for stop‑work enforcement unless sediment was entering streets or storm drains.

Committee members also discussed consistency across jurisdictions. Senator Zatzke asked whether surrounding states allow local units to control sites under one acre; Miller and Dorio said that EPA guidance historically excluded sites under one acre from certain federal permit requirements, and states vary in practice, but the amendment aligns state statute with the CSGP framework while preserving the 48‑hour correction period.

Questions about accountability for local enforcement were raised. Senator Buck and others asked what recourse a citizen has if a municipality does not act on a complaint; the sponsors said citizens can escalate to the Indiana Department of Environmental Management (IDEM), which can enforce CSGP standards. "If the municipality will not go out and enforce it, then the person complaining is going to have [IDEM] notified," a sponsor said, noting the 48‑hour correction timeline remains consistent with IDEM enforcement.

After discussion the committee moved and seconded Amendment 3. The amendment passed by roll call, 9‑2. The committee then moved the bill as amended; SB 1037 passed the committee 8‑3.

The bill as amended does not change retention or other planning ordinance requirements, sponsors said, and is explicitly limited to how construction stormwater controls are applied to sites one acre and smaller. Sponsors described the change as intended to reduce the cost and delay of preparing a full SWPPP (stormwater pollution prevention plan) for small projects while preserving the ability of local units and IDEM to require sediment and erosion controls and to pursue enforcement when sediment leaves a site.

Senator Jackson and Senator Taylor spoke in opposition in their roll‑call explanations, citing concern about state preemption of local rules and whether the amendment diminishes local control. Other senators described the amendment as a pragmatic compromise among builders, local governments and environmental stakeholders.

The committee record shows two formal actions on SB 1037: adoption of Amendment 3 (9‑2) and committee passage of the bill as amended (8‑3). No committee motion text for movers or seconds was identified in the transcript.