The River Mersey (Mersey Gateway Bridge) Order 2011

30.  In this Part of this Schedule—

“accumulation” means any accumulation of silt or other material;

“the Agency” means the Environment Agency;

“completion” in relation to a work means the date on which it is brought into use;

“construction” includes execution, placing, altering, replacing, relaying and removal and “construct” and “constructed” shall have corresponding meanings;

“drainage work” means any watercourse and any bank, wall, embankment of the River Mersey or other structure, or any appliance, constructed or used for land drainage, flood defence or tidal monitoring, and includes any land which, taking account of flood defences, is expected to provide flood storage capacity for any watercourse at intervals not less frequent than—

(a)

in the case of areas providing fluvial flood storage, once in 100 years; and

(b)

in the case of areas providing tidal or coastal flood storage, once in 200 years;

“erosion” means any erosion of the bed or shore of the sea or the bed or banks of the River Mersey;

“excluded work” means Work Numbers 1a, 1b, 1c, 1d, 1e, 1f, 2a, 2b, 3a, 3b, 4h, 4i, 4j, 5a, 5b, 5c, 5d, 5e, 5f, 5g and 5h;

“the fishery” means the River Mersey and fish in, or migrating to or from, the River Mersey and the spawn, habitat or food of such fish;

“plans” includes sections, drawings, specifications, method statements and other such particulars;

“River Mersey” means the River Mersey and its tributaries within the Order limits;

“specified work” means so much of any permanent or temporary work or operation authorised by this Order (including, for the avoidance of doubt, any dredging and any geotechnical investigations that may be undertaken) as is in, on, under, over or within 16 metres of a drainage work or is otherwise likely to—

(c)

affect any drainage work or the volumetric rate of flow of water in or flowing to or from any drainage work;

(d)

affect the flow, purity or quality of water in any watercourse or other surface waters or ground water;

(e)

cause obstruction to the free passage of fish or damage to any fishery; or

(f)

affect the conservation, distribution or use of water resources;

and reference to protection of or damage to a drainage work includes reference to the protection of or damage to the drainage work as a natural resource or in respect of the effects of that drainage work on the environment.