Investigation, Planning, and Design
Questa provides services to individual homeowners, developers, and other clients throughout California in site evaluation, design, and environmental review of onsite wastewater disposal systems, including:
Small-Scale Onsite Wastewater Disposal
- Design of conventional single-residence septic systems, as well as mound and pressure-dosed systems
- Geological site investigations, including percolation testing and soil profile analyses
- Feasibility and planning analysis of onsite wastewater disposal suitability
- Assistance with permitting and regulatory compliance
- Construction management, ongoing monitoring, and maintenance
- Cumulative impact studies for contamination hazards and groundwater mounding
- Training seminars on soils, site evaluation, and specialized aspects of onsite sewage disposal practices
Large-Scale Wastewater Treatment and Disposal
- Design of community and commercial facility systems
- Geological site investigations, including percolation testing and soil profile analyses
- Onsite alternatives
- Mound disposal systems
- Spray irrigation
- Evaporation-percolation ponds
- Wetland and biological treatment systems
- Construction management, ongoing monitoring, and maintenance
Water Supply
- Water availability investigations
- Planning for municipal, industrial, and agricultural uses
- Evaluation of recreation and in-stream requirements
- Storage reservoirs and distribution systems
- Spring development and rehabilitation