Stockton Site investigation case study. Geoinvestigate frequently provides contaminated land and geo-environmental borehole Site investigation services in Stockton-on-Tees, Stockton and it’s next door neighbour Middlesbrough. This case study involved the sinking of several windowless sampling Boreholes on a meander loop on the south bank of the River Tees opposite Stockton town centre.
The site was previously occupied by several foundries including the famous Head Wrightson Works where in the late 1980s Margaret Thatcher took her famous “walk in the wilderness” Subsequently the area has been extensively remediated and redeveloped for housing, offices and educational purposes including Durham Universities Queens Campus.
Initially the Boreholes typically encountered 1m to 2m of compact dolomitic limestone made ground or capping layer. This was underlain by 1m of foundry slag followed by firm to stiff natural clay, the later probably representing the former clay crust on the meander. Conditions below this quickly deteriorated with firstly firm spongey brown clayey peat becoming soft with depth followed by several metres of soft and very soft organic grey silty clay.
Recently Geoinvestigate has been active again in the Stockton-on-Tees area on a Site investigation comprising several windowless sampling Boreholes at an industrial facility. The image shows Dando Terrier percussive tracked mini-drill rig.