The survey was undertaken using four Bartington Grad601 sensors mounted at 1m intervals (1m traverse interval) onto a rigid carrying frame. The system was programmed to take readings at a frequency of 10Hz (allowing for a 10-15cm sample interval) on roaming traverses (swaths) 4m apart. These readings were stored on an external weatherproof laptop and later downloaded for processing and interpretation. The system was linked to a Trimble R8s Real Time Kinetic (RTK) differential Global Positioning System (dGPS) outputting in NMEA mode to ensure a high positional accuracy for each data point, in accordance with EAC guidelines (EAC 2016). EEW Group 009 falls within a Recognised Archaeological Zone (RAZ), specifically RAZ 18. This is defined as containing evidence of the north portion of a deserted medieval village at Marston. The survey has not identified any anomalies of definite or possible archaeological origin. The only anomaly of note in the data is a likely service pipe running alongside Yarlet Lane. No magnetic anomalies have been detected in either of the parcels which could represent ridge and furrow or linear features associated with historic boundaries and/or former watercourses as identified in LiDAR data and/or aerial photographs. Similarly, no anomalies have been recorded which may relate to the DMV at Marston which is located nearby in the vicinity of the junction of Marston Lane and Yarlet Lane.
Matt Berry (Sat,) studied this question.