Case Study · Miami-Dade County

Doral industrial — NPDES cleanout clears DERM notice

A 12-acre industrial logistics facility in Doral received a DERM notice for hydrocarbon sheen at its outfall. We inspected, cleaned, disposed under manifest, and delivered the documentation that closed the notice inside 30 days.

Client
Industrial logistics operator
Location
Doral, FL
Property
Industrial / SIC-coded MSGP facility
Timeline
30 days, notice to close-out

The challenge

DERM inspectors documented a visible sheen at the site's primary outfall to the C-6 canal during a dry-weather screening. The Multi-Sector General Permit (MSGP) coverage was current, but the SWPPP had not been updated since the previous operator, and no recent cleanout records existed.

Standard vactor spoils could not be dewatered on-site — the sediment tested positive for petroleum hydrocarbons and required manifested disposal at a licensed facility.

Scope of work

Catch basin cleanout with hydrocarbon-impacted spoils, manifested disposal at a licensed facility, dry-weather outfall screening, and SWPPP-ready documentation.

  • Sediment characterization and disposal profiling
  • Vactor cleanout of 22 catch basins across the site
  • Manifested transport to a Florida-licensed disposal facility
  • Hydro-jetting of the primary outfall trunk line
  • Dry-weather outfall screening (post-clean) with photo verification
  • Updated SWPPP inspection log and O&M records

Results

22
Basins cleaned
18.4 tons
Sediment disposed (manifested)
Closed
DERM notice status
30
Days notice to close-out
The site is now on a quarterly MSGP inspection contract with dry-weather outfall screening and a rolling cleanout trigger tied to sediment depth. No further sheen events since.
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