Services

Our most popular services include soil infiltration rate evaluations, stormwater designs for residential projects, critical area assessments for geohazards (erosion/landslide, coal mine and tsunami hazards), and property purchase assessments. Our services are as detailed below:   

Stormwater

• Soil infiltration rate testing for low impact development (LID) stormwater BMPs (permeable pavement, bioretention facilities, rain gardens)

• Soil infiltration evaluations for professionally engineered stormwater designs (short plats and long plats, residential projects, small commercial and mixed-use developments)

• Help with the City of Bellingham's Onsite Stormwater BMP Guidance for projects less than 5,000 square feet of new or replaced hard surfaces

• Soil testing and prescriptive stormwater design services for projects subject to Minimum Requirement #5 - Onsite Stormwater Management (infiltration trenches and drywells, dispersion trenches and splash blocks, rain gardens, perforated stub-out connections, permeable pavement/pavers and sheet flow/concentrated flow dispersion)

• Soils reports for BMP T5.10A Downspout Full Infiltration Systems and BMP T5.15 Permeable Pavements/Pavers

• Determination of saturated hydraulic conductivity (Ksat) and design infiltration rates (pilot infiltration testing and grain size analysis method)

• Soils reports and stormwater design services for the Sudden Valley Community Association Appendix D: Homeowner Stormwater Workbook (including Stormwater Facility Location Site Plans and Tree Canopy Retention Plans)

• Soil infiltration evaluations and prescriptive stormwater design services for projects in the Lake Whatcom, Lake Samish, Lake Padden, Birch Bay and Drayton Harbor watersheds and NPDES Phase II areas

• Slope setback evaluations for infiltration and dispersion stormwater systems

• Recommendations for HDPE stormwater outfall systems for residential projects on smaller slopes

• Residential stormwater/sump pump system design recommendations

• Wet season groundwater monitoring and seasonal high groundwater estimates

• Cation exchange capacity (CEC) and organic content (OC) testing  

Geologically Hazardous Areas

• Critical area assessments for erosion and landslide hazard areas

• Tsunami hazard area evaluations for Sandy Point, Birch Bay and Blaine

• Coal mine hazard area assessments (new house, ADUs and subdivisions)

• Limited geohazard evaluations for minor critical area permits  

• Property purchase assessments for steep slopes and coastal bluffs

• Coastal erosion rate estimates (bluff retreat)

• Slope stability assessments

• Safe building setback recommendations

• Stabilization techniques for unstable slopes

• Vegetation management on steep slopes

Additional Services

• Fill and peat delineation

• Depth to bedrock investigations for planning a foundation excavation

• Evaluations for foundation settlement and drainage issues 

• USDA soil textural classification for septic design

• Code compliance violations

• Help with permitting and project coordination

• Mapping and drafting services using AutoCAD (site plans)

• Referrals to qualified local professionals and contractors