The Atascadero Creek Interceptor Sewer project involved 7,200 feet of existing 24" to 30" Techite pipe that was plagued with structural deficiencies. The creek corridor is an environmentally sensitive habitat area that is located immediately upstream of a coastal slough and a popular beach. Penfield & Smith prepared an evaluation of the existing sewer and a preliminary design report for rehabilitation and replacement alternatives. Pipe bursting technology was selected as the superior alternative to significantly reduce environmental impacts, to up size the pipe for additional capacity and for its cost effectiveness. The sewer was replaced with 34" to 36 " HDPE butt fused pipe. The project received Trenchless Technology Magazine's 2001 Rehabilitation Project of the Year award and an American Public Works Association’s Environmental Technology Project of the Year award. In addition to the evaluation and feasibility analysis Penfield & Smith performed the final design, permitting, bidding and construction management and inspection services.