Why Allterra?
Local Knowledge
Allterra has 14 years experience performing consulting geology services in the Central Coast region; a Geologist who received his MS and BS in Geology from UC Santa Cruz, and we are approved by Santa Cruz, Monterey, Santa Clara, San Mateo and San Benito County for Geologic Hazard Investigation consulting. We understand local geology and local agencies.
Professional Engineering
Environmental regulations can make simple tasks complex. From small solvent plumes to constructing new homes on rural property; we put ourselves in your shoes and understand how communication, hard work, and professional expertise are fundamental to the Customer Experience when dealing with Environmental Regulation.
Certified Small & Local
Allterra is a certified Small Business in California (DGS#1568700). Our Environmental Team lives and works in the Central Coast; our project expenses and payrolls are reinvested in the Central Coast, and our knowledge and work experience is focused on the Central Coast. Experience the refreshing feeling of hiring a great small business that cares about your project.
Services
Geology
We provide Comprehensive Geologic Hazard Investigations, Waste Discharge Site Evaluations, Septic System Evaluation & Design and Groundwater Management planning to support development of rural property in Santa Cruz, Santa Clara, Monterey, and San Benito Counties.
Environmental
We provide Environmental Site Assessments (ESA Phase I & Phase II), Annual Storm Water Monitoring & Reporting, Corrective Action, and other Monitoring and Data collection services (SWPPP preparation) to support compliance with Regional Water Quality Control Board, County Health, or Department of Toxic Substance requirements.
Case Study: Geologic Hazard Investigation
Santa Cruz County – Aptos – Fern Flat Road

Our recommendations included:
- Building Envelope: County approved area safe to build;
- Waste Disposal System: Design, size, and location of waste disposal system;
- Parcel topography and drainage; and
- Setback and mitigation of Geologic Hazards.
Fern Flat Geologic Hazard Investigation resulted in approval by the County to proceed with site construction.




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