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

Map

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)

  • --- Unpublished document: York Archaeological Trust. 2020. York Central Redevelopment: An Updated Geoarchaeological Deposit Model.
  • --- Unpublished document: York Archaeological Trust. 2021. York Central Phase 1 Evaluation assessment report.

Related Monuments/Buildings (0)

Parent/preceding Site Events/Activities (1)

  • York Central Phase 1 Deposit Monitoring & Evaluation (Ref: 2021/22)

Record last edited

Mar 16 2021 4:53PM

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