Our integrated teams innovate and collaborate. See some examples of our work.
Designing Healthy Schoolyards for Los Angeles Unified School District
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Designing Healthy Schoolyards for Los Angeles Unified School District
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Redmond Climate Resiliency and Sustainability Vegetation Management Plan
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Strawberry Bay Restoration
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Geneva Bioretention Pilot Project
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Port Orchard Stormwater Infrastructure and Sea Level Rise Analysis
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Kent Parks Climate Resiliency and Sustainability Plan
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Vancouver Sea2City Design Challenge
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Shoreline Climate Impact and Resiliency Plan
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Lawndale Southern Revitalization Project Feasibility Study
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Jake Kuredjian Park Stormwater Project Feasibility Study
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Merced Avenue Greenway Project Monitoring
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County of San Diego Community-Focused Stormwater Program
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State Parks Shoreline Vulnerability Assessment and Climate Adaptation
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Boise Creek Golf Course Restoration Final Design
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Seattle South Transfer Station Phase II Design Completion
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City of Alhambra Green Street Feasibility Study
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Cambie Corridor Integrated Water Management Plan
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Wyoming AML Small Hard Rock Site Remediation
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Shannon Point Shoreline Improvements
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Pressentin Park Side Channel Restoration and Recreational Improvements
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Puget Sound Shore Friendly Program Support
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City of Kenmore Integrated Aquatic Vegetation Management Plan
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Black Lake Algae Control Plan, Alum Treatments, and Septic Source Tracking
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Silver Beach Creek Water Quality Retrofit
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Hidden Lake Dam Removal
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Pacific Lumber Stormwater Conveyance and Treatment
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Leachate Pump Station Upgrades at Cedar Hills Regional Landfill
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Troy Mine Revegetation Services
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Swift Creek Sediment Management Action Plan Implementation
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Lake Sammamish Snorkeling Survey
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Lone Lake Management Plan
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Julianna Park Improvements
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Port Susan Bay Estuary Restoration
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City of Seattle Stormwater Code & Manual Update
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Still Harbor Shoreline Restoration Feasibility Study at McNeil Island
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Port of Everett Stormwater Treatment Alternatives Analysis
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Stateside Student Housing Development
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Hawthorne Community STEAM Playground Retrofit
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Port of Seattle’s Fishermen’s Terminal Redevelopment
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Greywater and Rainwater Systems Design for BLOCKHouse: Homes for the Homeless
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City of Marysville: Engineering for Olympic View Park Improvements
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Westridge Place to Stoney Creek Way Trail Connector
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Civil Engineering for Pasado’s Safe Haven Expansion
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IC/ID Field Screening Guidance Manual and Training
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King County Ditch Maintenance Toolkit
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Municipal Construction Stormwater Site Inspection Toolkit
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Incentivizing LID Beyond Permit Requirements Guidebook
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Sun Canyon Road Resurfacing
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Cottonwood Creek Wetland and Stream Delineations
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Trophic Cascade Effects on Algae Blooms in Washington State
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Black River Pump Station SEPA Strategy
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Shirley Basin Uranium Waste Pile Reclamation
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Vaughn Bay Microbial Source Tracking Study
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Astoria Nordic Heritage Park
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Ediz Hook Restoration
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Mercer Island Decant Facility Retrofit
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White River at Pacific Right Bank Flood Protection Project Planning and Design
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Cornet Bay and Hoypus Point Improvements at Deception Pass State Park
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Squalicum Creek Trail Cornwall Connector
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Piner Point Shoreline Stabilization
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Stillaguamish Village Design
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Nearshore Restoration at Fort Townsend State Park
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Dockton Beach Park Shoreline Restoration
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Tacoma Climate Change Resiliency Study
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Port Angeles Landfill Stabilization
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Delridge Natural Drainage Solutions
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Carli Creek Restoration and Stormwater Treatment Design
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Black Pine Mine Reclamation
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Cedar River Corridor Planning
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Evaluating Establishment of a No Discharge Zone in Puget Sound
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Vegetation and Wildlife Surveys for Bonneville Power I-5 Corridor
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SR 167 Completion Habitat Mitigation and Stormwater Design
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Cordata Trail to Elementary School
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Albany Street Stormwater Facility
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Evaluating Stormwater Retrofit and Restoration Opportunities in the Lower-Middle Deschutes River
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Stormwater Program Support for Tumwater
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Chicken Creek Refuge Restoration
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D Avenue Green Street Stormwater Enhancement
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Community Park at Cordata
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Stormwater Infiltration and Impacts on Groundwater
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LID Code Review and Implementation Tools
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Bellevue Grand Connection
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Lake Whatcom North Shore Water Quality Testing
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Vancouver Watershed Health Assessment
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Sunset Mine and Mill Reclamation
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University CSO GSI Design Project
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Upper Clear Creek Habitat Enhancement
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Light Rail Construction Environmental Oversight
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Seattle Center Campus Green Stormwater Retrofit
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BMP Certification Services
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Interbay Landfill Gas Extraction System
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River Mine Reclamation
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Retrofits to Reduce Phosphorus in Stormwater
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Optimizing Bioretention Soil Media
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Park Place Facility Design and POST Media Development
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Port of Seattle Street Sweeping Effectiveness Study
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Cedar Hills Landfill Development Alternatives
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East Orchard Retrofit and Design
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Tacoma Sustainable Materials Management Plan
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Lake Whatcom Stormwater Capital Program
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Colman Dock Sediment Cleanup Plan
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Washington State Low Impact Development Training
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Marymoor and Overlake Sustainable Redesign
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Burnt Bridge Creek 2017 Trend Analysis
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Big Cliff Remedial Investigation
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Redmond Bioretention Research
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Lower White River Countyline Levee Setback
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Secret Harbor Salt Marsh Restoration
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City of Roses Disposal and Recycling Upgrades
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Holden Mine Remediation
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Redmond Bioretention Monitoring
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Chambers Lake Stormwater Treatment Facility
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Zhenjiang Sponge City Infrastructure Planning
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Sinnema Quaale Trail Protection and Habitat Enhancement
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Hall Creek Culvert Removal and Restoration
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City of San Francisco Typical Plans and Specifications for Green Stormwater Infrastructure
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Coal Creek Parkway Culvert Replacement
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WindFloat Pacific Offshore Wind Demonstration Project NEPA EA and Permitting
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Green Lake Integrated Phosphorus Management Plan and Alum Treatment Design
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Redmond Watershed Management Plan
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Forest Rose Mine Reclamation
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Pullen Creek Fish Passage and Restoration Design
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City of Seattle Stormwater Code and Manual Update
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Hillslope Delineation Toolbox and Batch Modeling
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Canyon Ferry Shore Stabilization
The Bureau of Reclamation (BOR) has identified six sites along the shoreline of Canyon Ferry Reservoir near Helena, Montana with →
Basin Planning for Agencies and Municipalities
Basin planning is inherently complex and uncertain. The interactions of physical, atmospheric, chemical, biological, climate, social, political, economic, and regulatory →
Bacon Creek Quarry Restoration
The Bacon Creek Quarry restoration project is a component of the Seattle City Light Skagit River/Newhalem Second Tunnel Project, which →
Aviation Stormwater Design Manual
To decrease wildlife-airplane interactions caused by stormwater facilities, the Federal Aviation Administration (FAA) and Washington State Department of Transportation (WSDOT) →
Alaskan Way Viaduct / SR 99 Bored Tunnel Design-Build Project
Herrera is working as part of a team to provide design-build services to the Washington State Department of Transportation (WSDOT) →
2200 Sixth Avenue
Suite 1100
Seattle, WA 98121
Phone (206) 441-9080
Contact: Alice Lancaster
107 SE Washington Street
Suite 140
Portland, OR 97214
Phone (503) 228-4301
Contact: Ellen McClure
101 East Broadway
Suite 610
Missoula, MT 59802
Phone (406) 998-6760
Contact: Heidi Houck
1329 North State Street
Suite 200
Bellingham, WA 98225
Phone (360) 398-5075
Contact: Chris Webb
231 D Street
Davis, CA 95616
Phone (971) 200-8876
Contact: Kate Forester
444 S. Center St.
Casper, WY 82601
Phone (307) 823-6919
Contact: Mark Gentry