SWPPP MULTI-SITE PORTFOLIO PROFITABILITY — WHICH SITES ARE LOSING MONEY?
Managing 40+ active SWPPP sites without per-site job costing means running a portfolio where some sites are profitable, some are breaking even, and some are consuming margin — and you cannot tell which is which until the project closes. The sites that lose money do not announce themselves. They absorb more inspection time, more BMP material, and more rework cost than was estimated. By the time the job closes, the loss is locked in.
The operational cause of SWPPP portfolio losses is almost always one of three things: sites bid on incorrect utilization assumptions, sites with compliance failures generating unreimbursed rework, or sites where inspection frequency exceeded the estimate without a change order. None of those are visible without per-site cost tracking. SPM builds the structure that makes them visible while there is still time to act.
WHERE SWPPP PORTFOLIO MARGIN GOES — BY SITE, NOT BY AVERAGE.
Inspection Frequency Above Estimate
Most SWPPP contracts estimate weekly inspections. Sites in active construction phases, or sites with repeated compliance notices, may require 2–3 inspections per week. Each additional inspection adds drive time, inspector time, and documentation time. On a site estimated for 48 annual inspections running at 96, the inspection cost per site is double the estimate. If not tracked per-site, it is absorbed into portfolio overhead rather than flagged as a site-level variance. Track actual inspection hours per site weekly against the estimate. Sites running over are flagged for a change order conversation or contract renegotiation at renewal.
BMP Rework Not Billed as a Change Order
Compliance failures on SWPPP sites require corrective action. The corrective action cost is real: labor, materials, additional inspection. Whether that cost is a contractor obligation or a billable change order depends on the cause. If the failure was caused by site conditions outside original scope — construction activity that disturbed areas beyond the original plan, increased sediment loads from adjacent grading — the corrective action is a change order. Most SWPPP contractors absorb these costs without submitting a change order because the documentation process does not exist. Document every corrective action with a cause determination. If the cause is outside original scope, submit the change order before rework begins.
Drive Time and Scheduling Inefficiency Between Sites
A SWPPP contractor managing 40 sites across a 60-mile radius carries significant drive time overhead. Sites at the far edge of the service area cost more to service than sites clustered near the office. If all sites are priced the same regardless of location, the distant sites are structurally unprofitable and the nearby sites are subsidizing them. Track drive time per site, calculate actual cost per site visit including windshield time, and reprice outlier sites at renewal.
WHAT CFOS BUILDS FOR SWPPP PORTFOLIOS — AND WHAT IT REVEALS.
What it reveals: A $5.2M SWPPP contractor tracking per-site profitability for the first time typically finds 15–25% of sites are running at or below cost — subsidized by the profitable majority for the entire contract duration. Correcting pricing or exiting those sites recovers the margin without adding a single new site.
FREQUENTLY ASKED.
