National Dam Inspection Program. Mine Number 60-Pond 5 (NDI Number PA 01144, PENN DER Number 63-88), Ohio River Basin, Tributary to Center Branch-Pigeon Creek, Washington County, Pennsylvania. Phase I Inspection report

摘要

The purpose of the investigation is to make a determination on whether or not the dam constitutes a hazard to human life or property. Mine No. 60-Pond 5 is located at the headwaters of an unnamed tributary to the Center Branch of Pigeon Creek, in Somerset Township, Washington, County, Pennsylvania. The Mine No. 60-Pond 5 is classified as a 'high' hazard dam. The No. Mine 60-Pond 5 is owned by the Bethlehem Mines Corporation Eight-Four, Pennsylvania. The field inspection of Mine No. 60-Pond 5 was performed on 18 March 1981 and 26 March 1981 and consisted of: Visual observations of the embankment crest and slopes, groins and abutments; Visual observations of the principal (and emergency) spillway including approach channel, overflow crest, and discharge channel; Visual observations of the embankment's downstream toe area including drainage channels and surficial conditions; Visual observations of downstream conditions and evaluation of the downstream hazard potential; Visual observations of the reservoir shoreline and watershed; Visual observations of the outlet works; Transit stadia surveys of relative elevations along the embankment crest centerline, spillway, and across the embankment slopes. The visual observations were made during periods when the reservoir was at normal operating level.