EYO6853 - York Central phase 1 TIER 2 ASSESSMENT
Type
WATER LEVEL MONITORING
Location
| Location | York Central |
|---|---|
| Grid reference | Centred SE 5896 5192 (648m by 239m) |
| Map sheet | SE55SE |
| Unitary Authority | City of York, North Yorkshire |
Technique(s)
Organisation
York Archaeological Trust
Date
2020
Description
A six-month program of groundwater monitoring was carried out between June and December 2020 to satisfy a planning condition imposed by City of York Council before groundworks could commence. This program was part of a larger archaeological evaluation which included trial trenching, borehole evaluation, assessment of environmental remains and the preparation of a deposit model for the site.
Ten boreholes were drilled to 10m BGL, and a plastic standpipe with a 9m response zone installed in each. Water levels were recorded using the Rugged Troll 100™ transducers, corrected for barometric pressure changes using a BaroTroll™ and water quality recorded using the AquaProbe 2000 ™ sonde. Parameters measured were pH, electrical conductivity, dissolved oxygen and ORP (redox).
Three sediment samples were analyzed by Geolabs for triaxial permeability, porosity, organic content and sulphate content.
Sources/Archives (2)
Related Monuments/Buildings (0)
Parent/preceding Site Events/Activities (1)
- EYO7852 York Central Phase 1 Deposit Monitoring & Evaluation (Ref: 2021/81)
Record last edited
Mar 16 2021 4:53PM