6.5 Environmental Protection: Waste Management (Duty of Care), Pollution Prevention & Noise Control

Statutory Environmental Responsibilities in Construction

Environmental management on construction sites is governed by a rigorous body of UK environmental legislation enforced by regulatory bodies including the Environment Agency (EA) in England, Natural Resources Wales (NRW), and the Scottish Environment Protection Agency (SEPA). Key primary statutes include the Environmental Protection Act 1990 (EPA 1990), the Environment Act 2021, the Water Resources Act 1991, the Hazardous Waste (England and Wales) Regulations 2005, and the Control of Noise at Work Regulations 2005.

Breach of environmental statutory duties is a strict liability criminal offence. Regulators possess powers to issue Enforcement Notices, Prohibition Notices, and launch criminal prosecutions resulting in unlimited fines and personal custodial sentences for site managers and company directors.

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Waste Management & Statutory Duty of Care (EPA 1990 Section 34)

Under Section 34 of the Environmental Protection Act 1990, anyone who produces, imports, carries, keeps, treats, or disposes of controlled waste owes a statutory Duty of Care. Construction site managers must implement four mandatory Duty of Care controls:

1. Prevent Illegal Disposal: Ensure waste is not fly-tipped or disposed of unlawfully.
2. Secure Waste Storage: Store waste securely in designated, covered skips or containers to prevent escape by wind, vermin, or rainwater leaching.
3. Verify Registered Waste Carriers: Transfer waste ONLY to authorized individuals—specifically a Registered Waste Carrier holding a valid EA registration certificate. Site managers must check registration credentials on the EA public register prior to waste removal.
4. Complete Statutory Documentation: Ensure every load of waste leaving site is accompanied by correct written documentation containing accurate European Waste Catalogue (EWC) codes.

Statutory Waste Documentation Retention Periods

Site management must maintain formal waste tracking records on site subject to EA audit:

Note: Recurring identical non-hazardous waste transfers between the same producer and carrier can utilize a single "Season Ticket" WTN valid for up to 12 months.

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Site Waste Management Plans (SWMP) & The Waste Hierarchy

Best practice management requires developing a Site Waste Management Plan (SWMP) prior to construction commencing. The SWMP sets out predicted waste streams, target recovery rates, and enforces the legal Waste Hierarchy established under the Waste (England and Wales) Regulations 2011:

The Legal Waste Hierarchy:
1. PREVENTION: Eliminate waste at design stage (exact material sizing, lean procurement)
2. PREPARING FOR REUSE: Clean and reuse materials on site (crushed concrete aggregate, timber shuttering)
3. RECYCLING: Segregate waste streams into dedicated skips (metals, timber, cardboard)
4. OTHER RECOVERY: Energy recovery via incineration plants
5. DISPOSAL: Landfill disposal (absolute last resort)

Critical Rule: Gypsum and Plasterboard Segregation

Plasterboard and gypsum-based products must be strictly segregated in dedicated, covered plasterboard skips and NEVER mixed with general biodegradable waste. When gypsum decomposes alongside organic waste in anaerobic landfill conditions, anaerobic bacteria react to produce hydrogen sulfide gas (H₂S)—a toxic, highly flammable, and foul-smelling gas. Mixing plasterboard in general skips violates environmental regulations.

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Pollution Prevention & Watercourse Protection

Protecting watercourses, groundwater, and soil from chemical contamination is governed by the Water Resources Act 1991 and Guidance for Pollution Prevention (GPPs / PPGs).

Secondary Containment (Bunding) for Oils and Fuels

Fuel tanks, mobile bowsers, oil drums, and chemical stores present severe spill risks. Statutory regulations mandate secondary containment (bunding):

• Bund Capacity Rule: Bunds must provide secondary containment capable of holding 110% of the maximum capacity of the largest container, or 25% of the total aggregate volume of all containers stored within the bund, whichever is greater.
• Bund Integrity: Bunds must be impermeable to water and oil, with no drain valves or outlets. Taps and fill pipes must be locked inside the bund boundary.

Concrete Wash-Out Controls

Ready-mix concrete truck wash water is highly alkaline (pH 12–13), rendering it corrosive and toxic to aquatic life. Discharging wash water into surface drains, streams, or unlined ground is a criminal offence. Sites must establish sealed, lined concrete wash-out bays equipped with pH neutralizing treatment systems or water recycling tanks.

Spill Response Preparedness

Refuelling areas must be equipped with dedicated Spill Response Kits containing oil-absorbent pads, booms, and soil granules. Site personnel must be trained in emergency spill response procedures, including immediately isolating the spill source, deploying booms to protect site drains, and notifying the Environment Agency Incident Hotline (0800 80 70 60) for major spillage incidents.

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Control of Noise and Vibration at Work

Construction operations (demolition, piling, breaking, crushing) generate high noise levels governed by the Control of Noise at Work Regulations 2005.

Statutory Noise Exposure Action Values

Employers must measure workplace noise levels and act when noise exposures reach defined action values: