ABSTRACT
The Oakwood Beach Interceptor Sewer project consists of two pumping stations and approximately 13.7 km (8.5 miles) of sewer along Hylan Boulevard in Staten Island. The paper discusses the site geology and confined aquifer conditions along the alignment, various factors which necessitated the use of compressed air for tunnelling, and problems encountered during construction and their solution. Finally, the health-related safety guidelines exercised on the project are outlined.
