Appraisal of the contractor's claim; Excessive Radon in the Workplace - P Wilkinson. File includes; claims team appraisal, Balfour Beatty claim, site investigation report, BGS report, John Knill report, D Dixon report, letters to and from the contractor, diagrams, case study and ventilation calculations.

Reference: D/AL/C5/A/15/13

Date: June 3rd 1993 - September 10th 1998

Fort Regent Cavern - Construction Phase. 941101-E. Construction - Progress; Environmental Aspects. Volume Eight. File includes correspondence relating to noise monitoring on Regent Road, vibration monitoring at Midland Bank International Finance Corporation Limited on Hill Street by Vibrock, dust assessments, general blasting vibrations, radon investigations and other general environmental data correspondence.

Reference: D/AL/C5/D/12/42

Date: July 17th 1995 - March 24th 1997

Fort Regent Cavern - Construction Phase. 941101-E. Construction - Progress; Environmental Aspects. Volume Eight (C). File includes correspondence, site records and Vibrock reports relating to noise monitoring on Regent Road, monitoring equipment, vibration monitoring, radon investigation, blast monitoring, carbon monoxide levels, pollution control and dust assessments.

Reference: D/AL/C5/D/12/45

Date: June 30th 1994 - July 13th 1995

File of Environmental Data including noise monitoring details and recorded data by Vibrock Ltd along with vibration levels, air overpressure levels, reports on dust levels, radon measurements, acoustic canopy, blasting survey sheets and related charts and correspondence.

Reference: D/AL/C5/D/13/22

Date: February 23rd 1996 - May 22nd 1997

Public Services Department Comtract 520/2. Surface Water Link and Storage Cavern.Tunnel Boring Machine S2-S4 Progress Records, Records of head cutter changes, radon monitoring record sheet and pro forma examples of record sheets.

Reference: D/AL/C5/D/13/48

Date: July 1st 1996 - August 17th 1996

File on Site Safety and Environment. File includes Balfour Beatty site records, reports, plans and correspondence on noise monitoring, procedures, radon investigations, protective clothing, ventilation, site safety committee meeting minutes, dust, blast monitoring, anchorage, incident reports, gases, access and pollution.

Reference: D/AL/C5/D/13/49

Date: 1994-06 - 1995-08

File on Site Safety and Environment. File includes Balfour Beatty site records, reports, plans and correspondence on noise monitoring, procedures, radon investigations, protective clothing, ventilation, site safety committee meeting minutes, dust, blast monitoring, incident reports, gas monitors and access.

Reference: D/AL/C5/D/13/50

Date: 1995-08 - June 6th 1997

Water Link and Storage Tank Contract No 520/2. Claim Appraisal Working File. Volume 2a and 2b (Tunnel S1-S2 and S2-S4). Radon. File 1 of 1. File includes; Review of claim 29: Excessive radon in the workplace along with a journal entry titled Radon investigations for tunnelling projects: a case study from St Helier.

Reference: D/AL/C5/E/18/40

Date: July 11th 1997 - September 1st 1997

Specialists Correspondence and Reports from D Dixon, Prof Dr-Ing W Weber and General Papers. Includes documents relating to performance audits, reviews of radon claim documents, rock strengths, data logging, claim submissions, horizontal raisebore and reviews of Balfour Beatty claims

Reference: D/AL/C5/F/19/11

Date: June 12th 1996 - April 7th 1998

File titled Radon. File includes correspondence to and from Balfour Beatty and Public Services Department relating to all aspects of the project involving Radon such as site investigations, health and safety issues, measurements and reports.

Reference: D/AL/C5/F/19/25

Date: April 10th 1996 - July 11th 1997

File titled Final Inspection, Pipe Repairs and Radon. File includes general correspondence, site instructions, hazard report, schematics and method statements

Reference: D/AL/C5/F/19/34

Date: July 29th 1998 - October 23rd 1998

Claims Office Correspondence File. Includes; general correspondence to and from Balfour Beatty and Public Services Department for claims relating to Radon, S1-S2, S2-S4, S4, DAL and CRC.

Reference: D/AL/C5/F/19/43

Date: May 3rd 1997 - October 23rd 1997

File titled Clause 14 Programme As Built and Opinions. Includes; Agendas for Internal Review Meetings, Public Services Committee notes on specific issues, reviews and appraisals of Contractor's claims, legal and contractual issues, contract programmes, report on excessive radon and correspondence on claim reviews. These papers all relate to claims Vol 2a S1-S2, 2b S2-4, 23a, CLause 14 and Donaldsons.

Reference: D/AL/C5/F/19/44

Date: May 22nd 1995 - November 10th 1997

Weighbridge to Town Centre St Helier Surface Water Link and Storage Tank - Radon Data. File includes Balfour Beatty Claim volumes 2a and 2b Tunnels S1-S4, conditions of contract clause 7, interpretive geotechnical report for radon emanation appraisal, extract from 'Safety in Tunnelling in the Construction Industry', Radon measurements, ventilation details and radon investigations for tunnelling projects.

Reference: D/AL/C5/F/19/66

Date: February 26th 1992 - July 25th 1997

Contract Correspondence Pre-Award. File includes correspondence to and from Merricks, Donaldson Associates, Balfour Beatty, Public Services Department and other specialists relating to; contracts, construction, designs, method statements, Radon, pre-contract meetings and measurements.

Reference: D/AL/C5/F/19/71

Date: May 11th 1993 - April 3rd 1995

Water Link and Storage Tank Contract No 520/2. Specialist Report and Correspondence - K A Pickervance, Nick Barton, Daryl Dixon, Vibrock and Trondheim. File includes covering letters and correspondence to and from specialists regarding; general administration, contracts, draft claim reviews, blasting, a review of data and information on the levels of radon gas, quantum determination, ground conditions and rock mass behaviour.

Reference: D/AL/C5/G/20/38

Date: September 1st 1997 - January 17th 2001

File of papers relating instrument data readings and environmental containment. File includes; correspondence, copy articles and purchase orders relating to surface monitoring, Ordnance Yard, Electricity supply to Snow Hill and radon monitoring. [This file did not come with a reference - given next reference code in sequence]

Reference: D/AL/C5/G/20/56/11

Date: 1998-05 - 1998-09

Radon and Gamma Ray Measurements of Borehole Core Samples

Reference: D/AL/C5/K/24/39

Date: March 26th 1993 - March 31st 1993

Log sheets of visitors and staff to controlled areas (Radon) along with blank original log sheet.

Reference: D/AL/C5/L/25/3

Date: May 21st 1996 - November 7th 1996

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