Table 14.8: Value of receptors in the study area for road drainage and the water environment

Value/ sensitivity	RDWE matter	Typical examples (based upon Table 3.70 in LA 113)	Receptors within the study area
Very high	Surface water quality	Watercourse having a WER classification shown in the River Basin Management Plan (RBMP) and a Q95≥1.0m^3/s.	River Irwell River Roch
	Hydromorphology	A watercourse that appears to be in complete natural equilibrium and exhibits a natural range of morphological features (such as pools and riffles). There is a diverse range of fluvial processes present, free from any modification or anthropogenic influence.	No receptors of this value within the study area.
	Groundwater	Principal aquifer providing a valuable resource because of its high quality and yield, or extensive exploitation for public and/or agricultural and/or industrial supply.	Chester Formation/Collyhurst Sandstone Formation.
		Internationally designated sites of nature conservation dependent on groundwater.	No receptors of this type within the study area (study area of 250m).
		SPZ1.	No receptors of this type within the study area (2km).
		World Heritage Sites. Nationally important infrastructure and buildings.	To be confirmed at the Environmental Statement stage.
	Flood risk	Essential infrastructure or highly vulnerable development.	M62, M60, A56, A665 and Middleton Road. Metrolink.
High	Surface water quality	Watercourse having a WER classification shown in RBMP and a Q95<1.0m^3/s.	Whittle Brook and River Irk
	Hydromorphology	A watercourse that appears to be in natural equilibrium and exhibits a natural range of morphological features (such as pools and riffles). There is a diverse range of fluvial processes present, with very limited signs of modification or other anthropogenic influences.	No receptors of this value within the study area.
	Groundwater	Principal or secondary A aquifer providing locally important resource or supporting a river ecosystem.	Coal Measures, Rossendale Formation, river terrace deposits, alluvium, glaciofluvial/glaciofluvial ice contact deposits.
		Licensed non-potable abstractions and unlicensed potable abstractions.	To be confirmed following receipt of data from the Environment Agency and local authority.
		Groundwater supporting a nationally designated or non-statutory locally designated site of nature conservation with high or moderate groundwater dependency.	Groundwater supporting Hazlitt Wood SBI, Hollins Vale LNR, SBI, and Hollins Plantation SBI, Philips Park and North Wood LNR and SBI, Lowland fen HPI in Pike Fold Golf Club.
		SPZ2.	No receptors of this type within the study area (2km).
		Grade I and II* listed buildings. Regionally important infrastructure and buildings.	To be confirmed at the Environmental Statement stage.
	Flood risk	More vulnerable development.	Residential properties within the study area for example in Sunny Bank and Whitefield in close proximity to Parr Brook and the River Roch.
Medium	Surface water quality	Watercourse not having a WER classification shown in RBMP and a Q95>0.001m^3/s.	Bradley Brook, Castle Brook, Hollins Brook, Parr Brook, Brightly Brook, Heaton Park Reservoir, Tributary of Bradley Brook. Ponds (based upon precautionary approach)
	Hydromorphology	A watercourse showing signs of modification, recovering to a natural equilibrium, and exhibiting a limited range of morphological features (such as pools and riffles). The watercourse is one with a limited range of fluvial processes and is affected by modification or other anthropogenic influences.	Whittle Brook, Hollins Brook, Castle Brook
	Groundwater	Aquifer providing water for agricultural or industrial use with limited connection to surface water.	Manchester Marls Formation, glacial till (diamicton), hummocky (moundy) glacial deposits, head.
		Unlicensed non-potable groundwater abstractions.	To be identified via data request to the local authority.
		Groundwater supporting a nationally designated or non-statutory locally designated site of nature conservation with low groundwater dependency, or groundwater supporting a non-designated site (including HPI) with a moderate or high groundwater dependency.	Groundwater supporting parts of Hazlitt Wood SBI, Hollins Vale LNR, SBI, and Hollins Plantation SBI, and groundwater supporting Philips Park and North Wood LNR and SBI, Lowland fen HPI in Pike Fold Golf Club.
		SPZ3.	No receptors of this type within the study area (2km).
		Grade II listed buildings. Locally important infrastructure and buildings.	To be confirmed at the Environmental Statement stage.
	Flood risk	Less vulnerable development.	Commercial and recreational properties within the study area – for example Heaton park BT Tower (historical landmark)
Low	Surface water quality	Watercourse not having a WER classification shown in RBMP and a Q95≤0.001m^3/s.	Although there are receptors that match this description, a precautionary approach has been taken and a medium classification assigned (see above).
	Hydromorphology	A highly modified watercourse that has been changed by channel modification or other anthropogenic pressures. The watercourse exhibits no morphological diversity and has a uniform channel, showing no evidence of active fluvial processes and not likely to be affected by modification.	Bradley Brook, Tributary of Bradley Brook 1, Parr Brook, Brightley Brook, Castle Brook Tributary, Tributary of Castle Brook Tributary, Unnamed Watercourse, Tributary of Unnamed Watercourse, Blackfish, Heaton Park Reservoir
	Groundwater	Unproductive strata.	Peat, glaciolacustrine deposits.
		Groundwater supporting a non-designated site (including HPI) with low groundwater dependency.	No receptors of this type identified at this stage within the study area (250m).
		Undesignated historic buildings.	To be confirmed at the Environmental Statement stage.
	Flood risk	Water compatible development.	Pike Fold Golf Club