The upper image is an aerial view across the Cog Moors dating from 1971 courtesy of the Penarth Times [101]. "A" and "B" indicate the extent of the tipping closest to the Penarth Dock site and the dotted lines indicate the proposed new path of the River Ely. The river straightened, the meandering loops were subsequently used as household waste tipping sites between 1972 and 1994. The Penarth Dock site is dwarfed by the scale of the Leckwith Road sites.

The lower map, [112] published by the Environment Agency in 2014 charts, in pink, the location and extent of the local historic landfill sites commencing at the extensive Leckwith Road sites from the period 1956 until 1974. I added the "A", "B" and "Leckwith" to the map in white to assist identification of the sites. The River Ely runs parallel to this site. 'None of the sites are active today' according to the Environment Agency. If this statement is true, why is there a methane gas flaring-off plant and a condensate lagoon above the former Penarth Dock? Maybe someone needs to look up the meaning of the word 'active' in the Oxford English Dictionary.