R & D Study Items

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Characterisation of cuttings piles - Detailed Description Title Characterisation of cuttings piles Task 1 Objective To obtain more detailed data on the physical, chemical and biological composition of cuttings piles Method Using OLF guideline protocols (including all geo-technical issues), carry out full characterisation of large water based mud accumulation (Ekofisk) and large oil based mud deposit (Beryl). Obtain existing characterisation data from small oil based mud accumulation (Maureen) and small synthetic based mud accumulations (Blenheim and Bladon) Timescale 6 months (for a limited number of different piles to be accurately characterised), with the final report due early 2001. Links Information from Phase 1and OLF protocols to obtain the requisite data from the range of pile types. Information acquired should be suitable for use in other Phase II research tasks, in particular 2a, 2b, 2c, 3, 4, 5a, and 5b (including geo-technical issues identified as a gap in Phase 1 area 1.1 - ie sheer strength and porosity); This information is necessary to form the basis for comparative assessments in determination of BEP. Other issues In addition to OLF characterisation, sediment samples should also be analysed for PCBs, metals, endocrine disrupters (indicators) and anaerobic degradation (indicators). Co-ordination and communication, including liaison with UKOOA environment committee on seabed survey database. As part of Task 1 survey work, samples will be collected for Phase II R&D tasks 2a, 2c, 3, 5a and 5b, as per requirements defined by lead contractor.