12. Drainage

A separate enabling service works contract will be carried out in advance of the proposed Part 8 housing development in order to de-risk the proposal (Refer to drawing P-350).

These works will include for the installation of foul and storm water drainage services. As part of a direct major connection agreement carried out by Irish Water for Limerick City & County Council (fig 1) which is currently underway, a foul sewer (public) extension will extend southwards from Adare Village to service the site. The proposed foul line for this Part 8 housing scheme will fall to the east (towards the N21 road) and tie into this planned public foul sewer extension. The proposed enabling works for the surface water drainage will discharge by gravity into the existing storm water sewer located at Deerpark housing estate adjacent to the proposed site.

Figure 1:

Water Supply

It is intended a 100mm dia. cPVC water main will serve the development through connection to the existing public supply water main on the Rathkeale Road to the East of the site. Please refer to Dennany Reidy consulting engineer’s report.

Foul Drainage

The proposed system indicates gravity sewer connections from both development areas with 2no. duplex buildings connecting to an existing sewer to the North of the site (at the existing Deerpark Housing Estate) and rest of development connecting to a planned foul sewer to the East (to be developed as part of the N21 Adare Western Approach Improvement scheme).

Please refer to Dennany Reidy consulting engineer’s report.

Surface Water Drainage

It is proposed to discharge the surface water generated by the proposed residential developments at both the North and South Sites to new drainage pipework to be installed as part of the enabling works contract carried out in advance of this proposed housing development.

The proposed surface water drainage will discharge by gravity into the existing storm water sewer located at Deerpark housing estate adjacent to the proposed site. All surface water shall be attenuated prior to discharge to the proposed drainage pipework installed as part of the enabling works.