Factory site, Bristol: Earthworks operations to minimise volumes of hazardous & non-hazardous waste
Factory site, Bristol: Earthworks operations to minimise volumes of hazardous & non-hazardous wasteClient : Development Company Value : £200,000 Duration : 3 weeks T&P Regeneration were approached by a client who had been quoted £572,000 to undertake excavation and removal of soils to facilitate the construction of a basement car park on their site. By undertaking segregated excavations, screening and on site testing T&P was able to save the client in the region of £370,000. The scope of the works included: Prior to undertaking the main works trial trenches were excavated across the site; firstly to determine the extent of the made ground and its physical composition; and secondly for the collection of samples of the underlying natural soil. This information was used to estimate the relative volumes of the different soil streams and their classification The works were undertaken in two phases with the made ground being excavated, screened and the fines retested to determine their classification first. This enabled the large volume of bricks and demolition rubble to removed separately for recycling while the reduced volume of fines were shown to be non-hazardous. Following the removal of the made ground the underlying natural sands were excavated to the desired formation level and the arisings were removed as inert material. The works were completed in two weeks one week ahead of programme and with a two third saving upon the costs to the client.
Re Use/ Minimisation
Residential Development Company
WatfordSample Project Two - Watford Client : National House Building Company Volume of Soil : 1,000m3. Following the successful bioremediation of hydrocarbon impacted soils the use of the Code of Practice by T&P permitted the treated soils to be re-used on site within a soft landscaped area. The use of the Code of Practice not only negated the need to apply for an exemption under the Waste Management Licensing Regulations it also created a substantial saving by avoiding both the disposal costs for the contaminated soils and subsequent import costs for chemically suitable replacement
QuedgleySample Project One - Quedgely Client : National House Building Company Volume of Soil : 15,000m3 Following a review of the third party information and discussions with the designing consultant T&P were able to produce a design that permitted to re-use of site won material with marginally elevated arsenic concentrations within the backfilling operation on a housing development site.
Residential Development CompanyValue : £18,000 Duration : 4 weeks T&P Regeneration were commissioned to organise and orchestrate the necessary approvals with the Environment Agency(EA) and Local Authority(LA) under the Code of Practice “Definition of Waste” to allow the infilling of an existing gravel pit to facilitate the construction of a series of new residential plots. The scope of the works included: Full geotechnical and geo-environmental investigation of the site area to characterise the soils from a chemical and geotechnical standpoint including gas monitoring. Liaison and agreement of the proposed infilling/redevelopment strategy with the NHBC, EA and LA under the Code of Practice “Definition of Waste” Act as “Qualified Person” under the terms of the Code of Practice. Prior to commencement of the filling the superficial reworked made ground at the base of the quarry was excavated and removed. Infilling of the quarry area was completed using engineered compaction of a mixture of site won and imported granular material. The works were completed over a four week period. On completion reinforced foundations were constructed across the infilled area.