Storm Sewer Inlet and Catch Basin Acceptance Inspection

This template covers the field checks typically needed before accepting a newly installed storm sewer inlet or catch basin. It records structure ID, site readiness, plumbness, grate fit, visible damage, rim and invert elevations, sump depth, pipe alignment, and flow path condition. It also includes deficiency documentation and a final acceptance recommendation so the record is usable for closeout.

Use it after installation is complete and before the structure is buried, paved over, or turned over for final acceptance. It is especially useful once as-builts or plan references are available and the structure can still be measured safely. If weather, standing water, or active construction prevents reliable verification, the inspection should be deferred until conditions allow accurate confirmation.

A qualified inspector, field engineer, or construction quality representative should complete it, ideally someone familiar with drainage plans and acceptance tolerances. A competent person on the site may support access and safety controls, but the person signing acceptance should be able to verify elevations, pipe connections, and installation conformity. If the project requires it, the owner, engineer, or municipality may also review the record.

Yes, it supports acceptance documentation practices commonly used on civil and utility projects and can be adapted to local public works requirements. It is also useful where stormwater work must align with approved plans, municipal specifications, or construction quality procedures. The template is not a permit itself, but it creates a clear record of non-conformance, corrective action, and final acceptance.

Common issues include a grate that does not match the approved design, a frame that is not flush with the finished surface, and an inlet invert that does not match the plan or as-built tolerance. Inspectors also often find construction debris left in the structure, incorrect pipe connections, or a sump that is too shallow for the project requirement. These findings can affect drainage performance and should be corrected before closeout.

Yes, the template is meant to be customized with project-specific tolerances, structure IDs, local standard details, and acceptance criteria. Municipal and DOT projects may need additional fields for standard drawings, agency sign-off, or GPS coordinates, while private-site work may emphasize owner punch-list tracking. You can also add photos, test results, or contractor comments if your closeout process requires them.

This is an acceptance inspection, so it is typically used once per structure at the end of installation or at staged closeout milestones. It is not a recurring maintenance checklist, although the same structure data can be reused later for warranty review or post-storm verification. If a structure is reworked after a failed inspection, run the template again to document the corrected condition.

An ad-hoc note often misses the measurements and sign-off details needed to prove acceptance. This template gives you a consistent walk-through order, observable criteria, and a place to record deficiencies and corrective actions. That makes it easier to compare structures across a project, defend acceptance decisions, and avoid disputes during closeout.