by Micheál » Wed Jun 19, 2013 1:31 am
Came across two interesting(?) reports the other night –
1. A 2011 DLR CoCo Bathing Place Report confuses Monkstown Stream with Balliclea (Mickey Briens) Stream. That said, it may be somewhat academic since it’s a single stream that meets the sea – referred throughout as Monkstown
“The following streams have the potential to impact on the water quality of the Seapoint Beach Area; the Priory Stream, the Monkstown Stream, the Brewery Stream, the Trimelston Stream. The catchment contains three pump stations that overflow to the sea and are capable of affecting the water quality at the designated beach area namely Blackrock Pump Station, Tobernea Pump Station and the West Pier Pump Station. The pumping stations are checked daily and regularly maintained. The majority of the catchment is drained by a combined sewer system. Works are ongoing to separate some of these combined sewers into separate foul and surface water sewers, reducing the number of overflows that may occur.
The water quality in the streams is checked in numerous locations on the streams regularly. The water quality in the bathing area is also checked regularly with these results posted on the notice board. Any overflows from the adjacent West Pier pumping station will trigger an automated electronic notice board that will inform bathers of the overflow. This information will remain on the electronic notice board for 12 hours”
. . .
"Point Source: Monkstown Stream: The stream is a very local stream. It begins in Sallynoggin and runs in open cut through the former Dun Laoghaire Golf Club lands. It enters the sea at the point where the west side of the West Pier of Dun Laoghaire Harbour meets the coastline approximately 250 meters from the designated bathing area. The catchment is quite small."
(Micheál comment: This is obviously the Ballinclea /Rochestown/Mickey Brien Stream)
. . .
"The Monkstown Stream catchment is suburban. It receives 2 overflows from the sewer network. For samples taken at Drayton Close in 2009 and 2010 the mean level of ammonia was 0.33 mg/l, of phosphorus was 0.14mg/l as P and BOB was less than 2 mg/l. Given the very high water quality analysis results at the bathing area, the risk of pollution from the Monkstown Stream is considered to be low"
2. A recent environmental impact statement for the Sutton to Sandycove (S2S) Cycleway mentions
“Monkstown Stream is culverted beneath the railways tracks, just south of the slipway at the start of the West Pier, Dun Laoghaire. There was no existing water quality available for this stream. However, the outfall of this stream is not located in close proximity to the proposed route of S2S
. . . .
"One of the main Foul Drains for the area crosses beneath the railway tracks at approximately the start of Block 20 – 23 of the apartments at Salthill. It travels northeast towards the West Pier Pumping Station. Another foul sewer runs from east to west alongside the pathway between the back of the pumping station and the tracks. This is another main Foul Drain, which crosses to the seaward side of the tracks behind the Nautical College and runs east to west before being directed towards the West Pier pumping station."
Confused? Me too.