Harrison Engineering Inc.

Engineering for Public Works

Home Services Projects Creeks Rehabilitation Municipal Interchange Highway References Employment Opportunities Links Harrison Engineering Inc. 399 Taylor Blvd., Ste 100 Pleasant Hill, CA 94523 (925) 691-0450 (phone) (925) 691-0460 (fax) randell@harrison-engineering.com Questions/comments about the site? Please e-mail

Drainage and Flood Control Projects Kirker Creek Improvement Project (Pittsburg): An $11 million flood control project designed to alleviate flooding of State Route 4 at Loveridge Road in the City of Pittsburg. Various hydraulic alternatives were developed and incorporated into the 404(b)(1) Alternatives Analysis, which included lined and unlined channels, a bypass channel option and several detention basin alternatives. The work included a detailed hydraulic analysis using HEC-RAS, HEC-HMS, and HEC-1. Work included an EIR, Construction Plans, Mitigation and Monitoring Plan, and permit coordination with the regulatory agencies. Rodeo Creek (Hercules): Route 4 (West) Gap Closure Project - Segment 1. The project included a detailed analysis of Rodeo Creek using HEC-RAS and a basin routing using HEC-HMS which was used to justify construction of a levee to prevent flooding of the highway. The project also included design of 1.7 miles of highway widening and associated drainage analysis and design. This work required an individual permit from the Corps of Engineers, Fish and Game permit, and a waste discharge permit from the Regional Water Quality Control Board. A "Location Hydrology Study" was also completed for the new Route 4 Bridge crossing of Rodeo Creek. West Antioch Creek Channel Improvement Project: This project on the lower reach of West Antioch Creek required detailed hydraulic analysis using HEC-2. The project also required Department of Fish and Game, US Army Corps of Engineers (Individual Permit), and Regional Water Quality Control Board permits. As part of the permitting process, alternative analysis was required for determining appropriate channel type to fit project constraints, as well as a mitigation-enhancement and monitoring plan. Proved to the Department of Fish and Game that a rectangular concrete channel was the only viable option for channel improvement in a section downstream of Fourth Street. Strawberry Creek (Sacramento): This project included the analysis and design of roadway drainage and creek capacity improvements for the City of Sacramento as part of the Route 99/Calvine-Cosumnes River Boulevard Interchange Project. Work included new structures over Strawberry Creek, creek relocation and improvements, consideration of in-stream detention, regulatory agency permits processing, and environmental mitigation. Work also included the analysis and design of roadside drainage facilities for a $13 million interchange project, including detention basins for City NPDES requirements. Orchard Creek (Lincoln): This project required analysis and design of roadway drainage and creek capacity improvements for the City of Lincoln for a new interchange, including a new bridge across the South Fork Orchard Creek. Work also included the analysis and design of roadside drainage plus major watershed drainage across two miles of freeway widening, and required detailed water surface modeling (HEC-RAS) of Orchard Creek and tributaries, box culvert extensions, and Location Hydraulics Study for the new bridge structure. Responsible for Section 404 and 1601 permit processing and permits from the Placer County Flood Control District. Dry Creek Bridge Replacement Project: Design and replacement of a “scour critical” bridge in Butte County. Required traffic detour, via a low flow crossing, which impacted endangered species, requiring Section 7 Consultation with US Fish and Wildlife Service. This project also required Fish and Game and US Army Corps of Engineers permits. Complicated hydrology and hydraulic analysis required close coordination with Caltrans Division of Structures Hydraulics Branch. 1997 Caltrans Storm Damage On-call: This project included over $22 million in storm damage repair/restoration on State highways in Butte, Plumas, Sierra and Nevada Counties on the North and Middle Forks of the Feather River, the North Fork of the Yuba River, Indian Creek, Jackson Creek, Sacramento River, and Dry Creek. Work included design of bank repair, bank protection, roadway reconstruction, slide repair, new retaining walls, retaining wall repair/replacement, bridge repair and replacement, drainage improvements, river hydraulic analysis, right of way engineering, value engineering studies, and coordination with regulatory agencies and utilities. 49 - Ladies Canyon Bridge Highway 49 - N. Yuba River Other projects involving streams and lakes include: Woodbine Pedestrian Bridge at Green Valley Creek – Town of Danville Mather AFB Pedestrian Bridge over Mather Channel – County of Sacramento Keller Lake Dredging – City of Concord Kimball Reservoir Dredging Study – City of Calistoga San Ramon Creek Slope Stabilization at Diablo Road – Town of Danville West El Pintado Slope Stabilization at San Ramon Creek – Town of Danville Route 162 Bridge Scour Repair at Sacramento River – Caltrans (Glenn Co.) Union 76 Service Station Culvert– (Concord) Galindo Creek Trail Gap Closure Project – City of Concord Concord Blvd and Old Kirker Pass Road Culvert Replacements – City of Concord La Gonda and Paraiso Bridge Rehabilitation – Town of Danville HEI has also provided studies and design solutions for improvements to small urban drainage problems for the following projects: Homestead Avenue and Walker Avenue Drainage Improvements – City of Walnut Creek Hope Lane and Las Huertas Drainage Improvements – City of Lafayette ABBA Mini Storage Flood Claim –City of Concord Richard Court Drainage Analysis and Design - City of Concord Kona Kai Drainage Analysis – City of Concord Wren Avenue Pedestrian Improvements – City of Concord Moretti Drive Drainage Improvements – City of Concord Pixieland Park Drainage Improvements – City of Concord Bonifacio Drainage Improvements – City of Concord Norcross/Acme Drainage Improvements – City of Oakley W. Cypress Drainage Improvements – City of Oakley Miranda Avenue Widening (Drainage Improvements) – Alamo (Co. Co. Cty.) Districts Way Storm Water Pump Station – Ironhouse Sanitary District Castle Hill Drive Roadside Ditch Analysis – City of Walnut Creek Buena Vista and Parkside Drive Intersection Improvements – City of Walnut Creek Beach Road Drainage Improvement Study – Town of Tiburon Railroad Avenue-Leland Avenue Drainage Improvements – City of Pittsburg Americana Park Detention Basin Analysis – City of Pittsburg Buchanan Park Drainage Improvements – City of Pittsburg Pinole Valley Road/I-80 Onramp Drainage Improvements – City of Pinole