Experienced in sewerage and land drainage matters to include: • drainage investigations • drainage design • preparation of drainage contracts • supervision and management of drainage contracts • management of consulting engineers • hydraulic modelling and masterplanning of sewerage networks. Experienced in allegations of professional negligence against consulting engineers Experienced in allegations of bad workmanship against contractors

Extensive experience in hard landscaping, especially domestic sites • Specialising in paving, walling and construction, including decking and artificial grass • Also Japanese Knotweed and water issues, including site flooding and drainage

Land drainage • Flood risk • Soil surveys • Soil husbandry • Land restoration • Water holdings structures/constructed wetlands • Natural flood management • Diffuse Water Pollution from Agriculture (DWPA) • Particular experience of soils and drainage along cross-country construction projects, such as pipeline installations • Providing consultancy and expert witness for soils and drainage disputes related to land development, land severance and breaches in land drainage law in England and Wales

Additional expert Mr John Hilson BSc MICE MCIWEM CEng, Chartered Civil Engineer Richard Allitt Associates Ltd, Suite A4, Chadwick House, Birchwood Park, WARRINGTON, WA3 6AE Email: [email protected] Flooding • Hydrology • Hydraulic modelling • Surface water management • Integrated urban drainage • Drainage & sewerage • Sewerage management • Waste water • Land drainage • Reservoir inundation modelling

I entered the profession as a 5 years indentured student apprentice for domestic, commercial and industrial sectors for plumbing, drainage, water, gas, boiler oils, public health engineering, building services engineering from August 1964 and qualified as an Engineer in 1969. I continued my academic and practical training to complete my professional qualification when I was awarded my Council of Engineering Institutions (CEI) Chartered Engineer (CEng) status in 1983. I became an expert witness in 1984. I...

Over 40 years of professional experience investigating water-related problems in construction and environmental health. Acted as expert or single joint expert for over 300 civil and criminal cases, arbitration, adjudication and public enquiries. Recent clients have included DEFRA, Drinking Water Inspectorate, NHS, Environment Agency, National House Building Council, local authorities and water PLCs. Specification and management of water systems and water protection in buildings • Drainage • Sewage treatment • Septic...

All aspects of geotechnical engineering, ground investigation, earthworks, foundations, piling, geotextiles, unforeseen ground claims • Author of SHW series 500 Drainage and Earthwork 600 series plus associated DMRB Vol 4 CUBS Expert Witness - Cardiff University Business School 2023

Construction safety • Occupational health & safety • Personal injury • Slips & trips • Manual handling • Accident investigations • Flooding damage • Geotechnical engineering • Foundations & earthworks • Embankments & cuttings • Soil & rock slope instability • Subsidence, settlement & heave • Treatment of mineworkings • Landfill engineering • Stabilisation works • Retaining walls • Ground improvement • Contamination • Drainage

Assessment and design of silage, slurry and manure handling, storage and application equipment and facilities • Compliance with agri-pollution legislation • Agricultural land management, including soil, manure and vegetation management practice