Ash Ecology

Construction Environmental Management Plans (CEMP)

Environmental Protection During Construction

A Construction Environmental Management Plan (CEMP) sets out the measures that will be implemented during the construction phase of a development to protect the environment. CEMPs are frequently required as a condition of planning permission, particularly where the site is near sensitive ecological receptors such as watercourses, European sites or protected species habitat.

What Our CEMPs Cover

Surface water management — silt fences, settlement ponds, bunding of fuel and chemical storage

Invasive species protocols — biosecurity measures, management of Japanese Knotweed and other Third Schedule species

Biodiversity protection — timing restrictions for sensitive species, buffer zones around setts and roosts, nesting bird checks

Waste management — handling and disposal of excavated material, particularly where invasive species-contaminated soil is present

Environmental monitoring — water quality monitoring schedules, ecological clerk of works requirements

When is a CEMP Required?

Planning authorities commonly attach a CEMP condition to permissions for developments near watercourses, Natura 2000 sites, or areas with known protected species. A well-prepared CEMP demonstrates to the planning authority that environmental risks have been identified and will be managed during construction.

Our Approach

We prepare CEMPs that are practical and implementable — not generic templates. Each CEMP is tailored to the specific site conditions, the ecological sensitivities identified during the assessment phase, and the construction methodology proposed by the developer. Where we have prepared the original ecological assessment (AA Screening, NIS or EcIA), the CEMP flows directly from the mitigation measures already recommended.

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