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This paper discusses the approaches to characterizing and monitoring two very similar sites in proximity. It explores the paucity of scientific evidence for understanding conditions of preservation, and techniques for monitoring it, that presently exist for sites that lie in superficial unconsolidated sediments within which a capillary fringe has developed above a groundwater table, rather than for a more conventional water-logged site. Challenge and review by peers is essential for a robust approach to ensuring management measures are appropriate, rather than relying on the knowledge and experience of a single individual or team. Since 2007, a monitoring programme for the internationally important timber platform at Hanson's Must Farm clay extraction site has been developed and enhanced, whilst excavations within the footprint of the quarry have revealed outstanding preservation of organic remains. The 3000 year inundation and sedimentary sequence, and the 100 years recent development in this landscape, are described along with the unusual preservation processes which have contributed to exceptional survival of archaeological remains. The results from Must Farm are contrasted to the paucity of monitoring data from Flag Fen, and the separate trajectories between a developer-funded project and a nationally protected monument are discussed. [ABSTRACT FROM AUTHOR]