environmental impact statement kilmainhamwood compost facility ...

5361- Kilmainhamwood Compost Facility Extension- EIS
Table 8.1 Relationship between Biotic Indices and Water Quality Classes
Biotic Index Quality Status Quality Class
Q5, 4-5, 4 Unpolluted Class A
Q3-4 Slightly Polluted Class B
Q3, 2-3 Moderately Polluted Class C
Q2, 1-2, 1 Seriously Polluted Class D
The relevant water quality monitoring station is located on the Dee River at ‘Evrys Cross Roads’ and
‘Toms Bridge’. Biological Quality ratings and other details are given in the Table 8.2.
The Ervy Lough Monitoring location (0025) maintained its satisfactory (Q4) status. However, although a
slight improvement was apparent in the upper reaches of this latter branch (0016) deterioration was
recorded at Tom’s Bridge (0035) in the lower reaches just upstream of Whitewood Lake. As indicated
primarily by the luxuriant weed and algal growths observed and by the wide DO fluctuations recorded
(e.g., 59% at 0035, 59% at 0200, 125% at 0450). Unrestricted cattle access caused localized bed and
bank damage at several locations including (0035, 0200) where extensive bank erosion also occurred.
Table 8.2 EPA summary data for Dee River, copyright EPA
Site Location Location Code HA06 1997 2000 2003
Evrys Cross Roads 0025 4 4 4
Toms Bridge 0035 3 3-4 3
Deegvee Br 0200 3 3-4 3-4
The EPA Water Quality Database indicates that the biotic water quality in the Dee River near the
subject site at Toms Bridge has not improved between 1997 and 2003 -‘moderately polluted’.
Under the Water Framework Directive, the Dee River is classed as ‘1a’, i.e., at risk of failing to meet
‘good status’ by 2015 (See Appendix 8.1). The principle pressures on the River Dee are arable sources,
diffuse pollution and channelisation/modification of the River Dee.
Hydrometric Data
Relatively recent flooding is reported and documented for the Kilmainham River at Kilmainhamwood on
a tributary to the River Dee. This is due to development on the natural flood plains of the River Dee
(www.floodmaps.ie;). No flooding was noted on the Dee River between Newcastle Lough and
Whitewood Lough. The subject site is located approximately 3 km to the north of the site and is not
located within the flood plain.
Surface Water Monitoring To Date
For inspection purposes only.
Consent of copyright owner required for any other use.
All suspended solids and hydrocarbon concentrations recorded to date, as per the surface water
monitoring regime stipulated in the existing facility waste licence, comply with the relevant Regulations.
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EPA Export 01-06-2010:03:55:55