Environmental Services

SHN has provided environmental services for over 45+ years

SHN’s environmental services staff are engineers, geologists, and scientists whose successes depend on their flexibility, resourcefulness, and meticulous preparation, in addition to their technical expertise.  Project locations are often remote, requiring several hours of drive time for access; therefore, responding to dynamic field conditions requires staff to:

  • Be extremely thorough in planning for collecting samples and field data because “going back” may not be an option,
  • Rely on our team’s 45+ years of local experience working in remote locations and unique situations,
  • Pay close attention to safety and environmental hazards such as wildlife, vehicle traffic, poor road and weather conditions, and poisonous plants, and
  • Make well-reasoned and well-documented decisions, thus gaining the trust of clients and regulatory staff who may never actually see the project sites.

Our major clients include the energy and forest products industries; the State of California; local governments such as cities, counties, and special districts; tribal entities; construction companies; and larger consulting firms who subcontract to SHN for the reasons listed above.

  • Assessing and prescribing Best Management Practices for limiting stormwater discharge
  • Assisting clients in understanding and satisfying California Construction General Permit (CGP) compliance through education with SHN’s California state-approved CGP Trainer of Record (TOR)
  • Assisting clients in understanding and satisfying the State of Oregon’s 1200C program
  • Preparing Stormwater Pollution Prevention Plans (SWPPP)
  • Creating and implementing Monitoring and Reporting Programs
  • Performing sample collections and field observations during rain events
  • Managing required submittals to the California State Water Resource Control Board’s Stormwater Multiple Application and Report Tracking (SMARTS) website
  • Working with industrial clients through the California Industrial General Permit or the Oregon 1200Z programs.

Our environmental services staff certifications include licensed engineers, geologists, and hydrogeologists, and California and Oregon stormwater certifications.  (In California, they are Qualified construction and industrial SWPPP Practitioners (QSP and QiSP), and (Qualified SWPPP Developers (QSD).  In Oregon, they are Certified Erosion and Sediment Control Lead and Qualified Industrial Stormwater Manager.)

  • Phase I Environmental Site Assessments (ESA)
  • Phase II and III ESAs
  • EPA Brownfields studies and remediation alternatives analysis
  • Soil and groundwater sampling and monitoring
  • RCRA/CERCLA (Superfund) studies and investigations
  • Remediation feasibility studies and Corrective Action Plans (CAP)
  • Spill Prevention, Control, and Countermeasure (SPCC) Plans
  • Hazardous Materials Business Plans (HMBP)
  • Underground storage tanks (UST) investigation and removal, and
  • Aboveground Storage Tanks (AST) inspections and permitting
  • Water Supply wells and water treatment
  • Landfill and wastewater treatment plant compliance monitoring
  • PFOA and PFOS evaluations
  • Steel Tank Institute Above-Ground Storage Tank inspections
SHN used in-situ chemical oxidation to remediate contaminated soils on Tuluwat Island in Humboldt Bay.
SHN used in-situ chemical oxidation to remediate contaminated soils on Tuluwat Island in Humboldt Bay.
To handle industrial stormwater runoff, SHN designed floating treatment “wetlands” to be part of the stormwater management strategy.
To handle industrial stormwater runoff, SHN designed floating treatment “wetlands” to be part of the stormwater management strategy.
Field sampling of soils, groundwater, and surface water requires strict attention to protocols for high quality data.
Field sampling of soils, groundwater, and surface water requires strict attention to protocols for high quality data.
A Phase 1 Environmental Site Assessment is the first step in documenting a site’s likelihood of contamination and potential next steps for remediation.
A Phase 1 Environmental Site Assessment is the first step in documenting a site’s likelihood of contamination and potential next steps for remediation.
Working with a subconsultant, SHN is performing an ecological risk assessment for a former sawmill.
Working with a subconsultant, SHN is performing an ecological risk assessment for a former sawmill.

We specialize in civil, environmental, and geotechnical engineering; geosciences; planning and permitting; surveying and drones; environmental and biological sciences; and materials testing and special inspections.

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