Stormwater compliance keeps getting stricter, and drainage scopes keep getting more technical. Risen Excavation installs complete storm drain systems — control piping in PVC, HDPE, and RCP, plus the treatment structures modern projects require: Modular Wetlands Systems (MWS), StormTrap detention structures, and biofiltration retention basins.
Heavy structures like StormTrap units demand precise excavation, bedding, and crane coordination; treatment systems demand exact elevations so water actually flows the way civil drawings say it will. We have installed these systems across San Diego and Southern California and know how to sequence them inside an active site.
From rough excavation of a retention basin to setting the last inlet grate, we deliver drainage systems that manage runoff and pass stormwater inspection.
