Invitation to tender by restricted procedure, deadline 05.09.2011, for supply, installation, commissioning and maintenance of CO and NOx monitoring equipment for Mersey tunnels. One-year warranty followed by five years support. Value range EUR285,000-EUR860,000, excluding VAT. Online prequalification, information, specs and docs at Merseytravel, www.thechest.nwce.gov.uk, where tenders or requests to participate must be sent. Contact point is tender@merseytravel.gov.uk. Visit http://ted.europa.eu/udl?request=Seek-Deliver&language=en&docid=244583-2011. 31/11.