Environmental Remediation

This document sets out how an EPIC profile intercepts rainfall close to where it lands, treats it in the profile and stores it for reuse, so that one buried structure carries drainage, treatment, storage and irrigation, duties conventional practice buys as four separate pieces of infrastructure.

It is written for drainage and civil engineers, landscape architects, environmental consultants and municipal planners specifying storm water treatment, on-site wastewater dispersal or contaminated-ground capping. Part 01 describes the inherited problem: three categories of pollutant, drainage built for movement rather than management, the conventional inlet, first-generation BMPs, the detention basin and the straw wattle.

Part 02 explains the chemistry that decides the design, including the different behaviour of nitrate and phosphate. Part 03 sets out the EPIC principle: growing media, detention and treatment capacity, the chamber and its gravity trap, operating levels and the oil line. Part 04 describes the road filter for roads, industrial paved areas and other hardscapes, including the transfer filter at the kerb, and Part 05 applies the same geometry to wastewater and the leach field.

Part 06 presents the evidence from two installations engineered and approved by third parties, the Nevada Department of Transportation SR-28 project at Incline Village above Lake Tahoe and the Wildwood Commons brownfield redevelopment in Willernie, Minnesota. It closes with a comparison against the detention pond, a configuration selection table, design values and sources.