F.E. Jordan Associates, Inc. has designed and inspected sewers of every imaginable type. We have designed collectors, trunks and interceptors. These have included very large ones such as the 60 inch trunk for the City of Seattle, Washington, and very small ones such as the collection system at Brookdale, Pierce County, Washington. We have designed both gravity sewers and force mains. We have laid out new systems and renovated existing ones.
The firm has worked on systems in Alaska where it is so cold that the pipes must be heated and insulated to keep the sewage from freezing. We have developed pipeline systems for handling air and chemicals at sewage treatment plants and other facilities. We have engineered sewers that required boring, special bedding, and piling. We have had experience in areas of steep cliffs, unstable hillsides, high watertables, swamps, frozen ground, congested city streets, freeways, river crossings, railroad tracks, bridges, parks, backyards, creekbeds and solid rock.
Our team members are familiar with various computer programs as well as conventional methods for sewer design. Our staff engineers are constantly keeping pace with current innovations in materials, engineering methods and construction. A technically sound design, backed by experience, is the hallmark of JA in pipeline services.
Washington Ranier Vista Interceptor
The two-mile Rainier Vista Interceptor retired the existing Rainier Vista Treatment Plant and intercepts collector systems downstream in the South Park area of the City of Seattle, conducting all flow eventually to major existing treatment facilities. Because of unstable ground, piles were designed to support the 36-inch pipe. Construction was completed in January 1979, for the Municipality of Metropolitan Seattle, at a cost of $1.5 million.
Southwest Ocean Outfall Project
San Francisco, California
These two major marine tunnels - underwater pipelines of up to 13 feet in diameter - carry sewage through a hostile marine environment across the active San Andreas earthquake fault, one and one-half miles out in the Pacific Ocean. JA was part of the design team headed by another consultant. This final subsystem of the City of San Francisco's wastewater management plan cost approximately $80 million.
Brookdale Collection System and Interceptor
Pierce County, Washington
JA provided the design of Brookdale Number 2 Collection System and Interceptor for Pierce County, Washington. This project includes several miles of eight inch collectors, and a 30-inch interceptor. Included in this project was the preparation of easements, design and layout of sewer facilities, technical specifications and cost estimates.
Infiltration and Inflow Analysis
For the Municipality of Metropolitan Seattle, JA has provided the infiltration and inflow analysis for the major portion of the West Point, Carkeek Park, Alki and Richmond Beach sewer system tributary to the treatment plants. This information was determined through the analysis of flow, population, water use, rainfall data and sewer maps. Flow monitoring and sewer system inspection was accomplished where necessary. Costs of treating and transporting flows was compared with estimated costs of sewage system rehabilitation. These treatment plants have an existing capacity of 300 MGD. This project was accomplished in association with another consultant.
The McClellan Interceptor Section I is a major part of the Sacramento Regional Wastewater Management Program, traversing the town and country section under the Interstate 80 freeway and the Southern Pacific Railroad near McClellan Air Force Base. The project consists of 24,400 feet of 48-inch gravity sewer at an estimated cost of $8.7 million. The project is designed in association with another consultant.
Bronson Creek Interceptor
This project lies about eight miles west of Portland, Oregon in Washington County and serves an area of about 3,000 acres. It consists of 15,000 feet of 21-inch to 27-inch sewer construction, a major highway undercrossing, removal of three pump stations and one treatment plant. Accomplishment of this project was in association with another consultant. Services included fieldwork, design, construction management, and easement preparation.
Lincoln Park Sanitary Sewer
This project involved the installation of a pump station, force main, and gravity sewer adjacent to a seawall along the beach of this popular park in West Seattle. High ground water, and saltwater infiltration were typical of the design and construction problems involved in this important facility.
Rock Creek Interceptor
This project is located approximately nine miles west of Portland, Oregon in Washington County, and serves an area of about 12,000 acres. It is composed of about 15,000 feet of 42 inch to 48 inch sewer construction, a major highway undercrossing, removal of one pump station, and one treatment plant. Involved in the work were design services, surveys easement preparation and construction services.
Empire Way Sanitary Sewer
JA provided the design of a 24-inch sanitary sewer trunk to conduct flow through a very urban central Seattle community.
Effluent Transport System
In this important project, JA designed a four and one-half mile force main to conduct effluent from the regional treatment plant to an outfall in the Grande Ronde River. The result was an 18-inch force main crossing a railroad, highway and other natural terrain features.
Animal Research Laboratory, University of California, Berkeley
Design of a sanitary system for an animal behavior research station was accomplished by JA for the University of California at Berkeley.Winston Green Force Main & InterceptorJ/A provided the engineering design of a force main and interceptor to provide service for the Green Sanitary District, and conduct the flow to a new regional treatment facility. The force main was connected to a remodeled pump station and extended approximately 10,000 feet. Connected to the terminus of the force main was an 18 inch interceptor which continued the flow an additional 5,000 feet to a junction with another interceptor, where flow was conducted to the treatment plant.
Police Academy Sanitary Sewer System
This project involved the design of a sanitary sewer collection system for this multi-million dollar comprehensive police training facility, located on a hilltop in South Seattle. A significant problem was in transporting the collected flow down the very steep hillside, with dense rock outcrops, to disposal facilities below. A pipe anchorage system was developed to secure the completely exposed sewer to the rocky hillside.
Sewer Collection System
As part of a major program to provide collection sewers for the City of Bend, Oregon, J/A was asked to design a significant portion of the system. The system involved four miles of eight inch sewers within the street and alley system of the city. An interesting aspect of this project is that the system was designed in solid rock. Many of the house connections were at the rear of the affected properties, which was a major factor considered in the system alignment.