Collinstown Business Park,

Old Airport Rd, Cloghran,

Co. Dublin.

Tel: (086) 812 1988/820 9828

Fax: (01) 842 8401




As the survey progresses and detected and identified services are surfce marked with colour coded spray paint onto the ground surface, the survey crew will begin to pick up the surface laid information with GPS or Total Station equipment. This information can be tied into local or national grid reference for overlaying onto OS or topographical drawings.



This information can prove to be invaluable in the design process where recognition of sub-surface features can determine the extent and order of initial site works and final utility layout. Trial holes can also be excavated to confirm the survey findings and to determine pipe material.


Position, alignment and depth of services can be verified by slit trenching. Also pipe material and condition of external wall can be examined. Lenmar can provide slit trenching and trial hole excavation in order to complete a comprehensive understanding of the underlying features and utilities within a specific site.