Geotechnical Desk Study - Islington Council

Geotechnical Desk Study
Contents
Section
Page
Glossary of Terms 6
1. Introduction 7
1.1 Background 7
1.2 Scope of Work 7
2. Sources of Information 8
3. Site Conditions 9
3.1 Site Description 9
3.2 Topography 9
3.3 Site Boundaries 9
3.4 Underground Services 9
4. Site History 11
4.1 Historical Maps 11
5. Geology, Hydrogeology and Hydrology 13
5.1 Geology 13
5.2 Hydrogeology 13
5.3 Hydrology 13
6. Ground Conditions 14
6.1 Made Ground 14
6.2 Weathered London Clay 14
6.3 London Clay 14
6.4 Contamination 14
7. Fieldwork 15
7.1 Walkover Survey 15
7.2 Topographical Survey 15
7.3 Condition Survey of Retaining Structures 15
7.4 Summary of Site Condition Survey 16
8. Geotechnical Considerations 18
9. Geotechnical Risks 19
10. Recommendations for Further Work 20
10.1 Contamination 20
10.2 Ground Investigation 20
10.3 Retaining Structures 20
11. Summary 22
12. References 24
List of Tables
Table 2.1: Sources of Information 8
Table 4.1: Summary of the Historical Ordnance Survey Maps 12
5044006/002 Geotechnical Desk Study (2).doc 4