How to Compare Exterior Drainage Repair Scopes

Put every option on one site map

A broad allowance is difficult to compare when route, outlet and restoration are undefined. Use the same marked areas and water observations for every option.

Compare complete physical limits

List removal, materials, connections, backfill or base work, finish restoration and testing separately. Mark collection points, the observed wet area, the intended outlet, surfaces to remain, and the route crews and materials can use. List testing, excavation, finish restoration and inaccessible piping separately. That makes it possible to compare whether proposals address the same water path rather than merely using the same drainage label.

• Compare exact limits
• Compare retained conditions
• Compare restoration
• Compare exclusions and change triggers

Name unknown routes and connections

Unknown utilities, subsurface conditions and concealed construction need written change points. Excavation or controlled opening can reveal a different pipe route, unsuitable connection, damaged substrate or additional affected finish. The scope should identify who reviews that finding, what evidence is recorded and which work pauses. Utility, structural, environmental or permit questions remain with the responsible qualified party before the drainage boundary expands.

Compare restoration and disruption

Keep approved selections and revisions with the final closeout package. Drainage closeout should show the accessible route worked on, installed or retained components, surface restoration, approved changes and the intended discharge condition observed during the agreed review. It should also list untested buried sections and excluded upstream or downstream work. A completion photo alone cannot establish performance in every future storm.

Keep revisions tied to the scope

Evaluate the complete repair path instead of the shortest line item list. A useful option ties its method to the observed route and property constraints. It identifies who supplies drainage components, what paving or landscape is disturbed, how excavated material is handled, which finishes return, and when the area can reopen. Product requirements and verified elevations guide installation; the guide cannot select a system from a photograph.

Select by intended result

Ask AWC to convert the verified field condition into a written bid package. Where the route, elevations, concealed connections or restoration limits remain unclear, AWC may recommend the $250 Site Evaluation + Written Bid Package. The fee is credited if the resulting project is approved within 30 days. Prepare safe water-path photos, known drain information and the approving owner or manager before the visit.

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