State bid reference · OH

Ohio: Big Darby and Olentangy watershed appendices

OHC000006 includes additional watershed-specific provisions in appendices for Big Darby Creek and portions of the Olentangy River watershed. Statewide construction coverage does not make every watershed’s requirements identical.

Sitework Estimate provides remote, plan-based quantity takeoff support. This page does not establish a local office, completed local project, engineering approval or permit coverage.

What this changes in the bid review

Estimating interpretation: Use the watershed determination to identify the governing design documents. Do not copy a general Ohio treatment assumption into a project with additional applicable watershed conditions.

Check the project documents

Mark each item after reviewing its supporting document.Confirm the receiving watershed and whether the project falls within an appendix area.Request the approved stormwater practices responding to those provisions.Match buffer, treatment and permanent-control limits to the civil drawings.

Clarification to request: Do the Big Darby or Olentangy appendix provisions apply, and where are their design responses shown?

Project document references or unresolved items

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Official context

Ohio EPA Construction General Permit OHC000006

Source checked 2026-10-16. Confirm the current incorporated edition and project approval with the named authority. The checks above are our estimating interpretation; the linked agency supplies the source context.

Local bid references with agency sources

These references address the named jurisdiction. Other municipalities can use different criteria and approval routes.