What Is Erosion and Sediment Control (ESC) and Why It Matters for Your Project

ENKON Environmental
Aug 17
3 min read

A Guide for Developers and Contractors in BC

If you’re breaking ground in British Columbia, there’s one thing you can’t afford to overlook: Erosion and Sediment Control (ESC).

Whether you're working on a residential subdivision, municipal road, or utility corridor, uncontrolled erosion can damage ecosystems, violate environmental laws, and shut your project down.

At ENKON Environmental Ltd., we help clients stay compliant with local bylaws and provincial regulations by designing, inspecting, and implementing effective ESC plans. This blog post explains why ESC matters, and how we can help you get it right the first time.

What Is Erosion and Sediment Control (ESC)?

ESC refers to the tools, techniques, and practices used to prevent soil erosion and control sediment runoff from construction sites. It’s especially important in BC, where heavy rainfall, steep slopes, and nearby waterbodies make many sites vulnerable.

Effective ESC protects:

Streams and wetlands from sediment pollution
Stormwater infrastructure from clogging
Downstream fish habitat
Developers from fines and work stoppages

Hay mulch, secured tarps, and silt fencing are all common ESC measures used on construction sites in BC to help prevent sediment runoff and protect nearby watercourses.

When Is an ESC Plan Required?

Most municipalities in BC, including Surrey, Vancouver, Burnaby, and Coquitlam, require an approved ESC Plan before issuing a building or development permit.

An ESC Plan is typically needed if you are:

Excavating, grading, or clearing land
Building near a stream, ditch, or wetland
Developing land over a certain size threshold (e.g., >1000 m²)
Working on steep terrain or unstable soils

Key Elements of a Good ESC Plan

A well-designed ESC Plan includes:

Site layout drawings showing slopes, drainage patterns, and waterbodies
Erosion control measures (e.g., hydroseeding, geotextiles, mulching)
Sediment control measures (e.g., silt fences, sediment ponds, inlet protection)
Inspection schedules and maintenance plans
Emergency response procedures for rain events

At ENKON, our ESC Plans are prepared by experienced environmental professionals familiar with both engineering design and on-the-ground construction realities.

What Happens If You Don’t Have Proper ESC?

Without adequate ESC, your site may cause:

Sediment plumes in nearby creeks and drainage ditches
Blocked storm drains leading to localized flooding
Erosion gullies that damage infrastructure
Stop-work orders, fines, or legal action

ESC violations are taken seriously, especially when they threaten fish habitat protected under the Fisheries Act or RAPR (Riparian Areas Protection Regulation).

ESC Services Offered by ENKON Environmental Ltd.

We support developers and contractors at every stage, offering:

ESC Plan development for permit applications
Construction-phase inspections and monitoring
ESC compliance reporting
Rain event response and on-call services
Post-construction stabilization assessments

With decades of experience across BC’s Lower Mainland, Interior, and Island regions, we understand local soils, regulations, and rainfall patterns, and how to build practical ESC solutions that work in the real world.