|Tunnel Boring Machine (EPBM) for 13-foot diameter tunnel
under an environmental wetland in Sacramento. Excavation
shoring is by "soil nailing" and grouted tie-backs 30' long. Perry
provided Resident Engineering for SRCSD.
|Jacking Shaft for 7-foot Herrenknecht Microtunnel Boring
Machine, boring under the American River. There were two
tunnels, each 600 LF in length. Perry provided Resident
Engineering for Sacramento County
|"Secant pile Shaft" 80 feet deep to receive the tunnel boring
machine after it tunnels under the American River. Two of
these shafts were required, one for each 600 LF long tunnel.
The shaft inside diameter is approx. 22 feet.
|Contra Costa Water District, Bollman Water Plant, aerial view.
Perry consulted and managed several large and small projects
for CCWD, including the Bollman Safety and Water Quality
Project and Developer Projects.
|The Salinas Valley growers, shown harvesting crops, benefit
from the irrigation facility that distributes reclaimed water at
Castroville. Perry managed this 48 mile pipeline & pumping
project for the Monterey County Water Resources Agency.
|This 2 million gallon water reservoir serves northern
Sacramento. Its construction utilized a technology ("DYK") to
wrap the tank with reinforcing cables for strength. Perry
performed inspection and resident engineering for this facility.
|As a member of the Program Management Team, Perry wrote
the Portland CSO Program Management Plan. This photo,
courtesy of CSO, shows a large interceptor pipe being lowered
into a secant pile shaft near the Willamette River.
|Perry's role as Construction Manager for the San Francisco
Public Utilities Commission's program management included
engineering studies at O'Shaughnessy Dam, pictured here on
the reservoir side.
|National Park Service, Aquatic Park, San Francisco: Upgrade of
promenade level of this national historic building. Perry was
resident engineer for the project, following strict park
guidelines on construction practices.
|Cured-In-Place-Pipe (CIPP): Insituform® pipe liner has resin
showing blue color in the photo. Substantial hazardous
material were tested and removed during the project. Perry
provided resident engineering and CPM scheduling for
Sacramento Area Sewer District.