Locations of fracture intervals inferred from borehole logs of eight wells at the Holton Circle Superfund site, Londonderry, New Hampshire
Year: 1993
Type: report
Abstract: Ground water in fractured bedrock at the Holton Circle Superfund site in Londonderry, New Hampshire, contains volatile organic compounds and chloride concentrations as high as 23,500 mg/L.Geophysical logs obtained from eight bedrock observation wells that range in depth from 65 to 382 feet were used to identify depths of possible water-bearing fractures.Logs included natural gamma, spontaneous potential, single-point resistance, caliper, temperature, and fluid resistivity.All but the natural-gamma log had anomalies that indicate possible fractures.Anomalies at the same depths on several logs from a single well support identification of likely fractures.Charts presented in the report show depths of anomalies that may indicate fractures.
DOI: 10.3133/ofr92647
Author: B.P. Hansen
Language: English
Subfield: Environmental Engineering
Field: Environmental Science
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W422787189