The SECOND of 10 feature projects to celebrate our 10 Year Anniversary! Portland (Connecticut River Valley) Brownstone is one of Connecticut’s well known historic building stone resources. The stone was quarried and exported widely in the 19th and early 20th centuries. In a neighboring community to the quarries, the lovely Chapel at Indian Hill was constructed of bush-hammered brownstone in 1867. Cirrus’ role as the Structural Engineer of Record began with a structural Conditions Assessment of the masonry and interior framing, followed by design and construction administration for the Exterior Restoration.