Environmental Site Assessment, Mixed-Use Development, San Diego

This project started as a Phase I ESA. The site had formerly been used for automobile repair businesses. GDS, Inc. completed a Phase II ESA to assess the extent of the contamination and worked with the owner, his contractors, and the regulatory agencies to clean up the contamination and allow the development to proceed. As part of the process, GDS worked with the State of California Orphan Site Cleanup Fund and the developer was able to recoup a significant fraction of the environmental consulting and mitigation costs incurred.

Groundwater Study, Sorrento Valley Area, San Diego

GDS was retained as a subcontractor to research existing groundwater data and provide a concise summary of its findings for the Sorrento Valley area of San Diego. This was part of a larger City of San Diego project to assess groundwater and water flow in this area and their impacts on infrastructure.

GDS evaluated numerous data sources from private and public records regarding groundwater wells, environmental site assessments evaluating groundwater conditions, and surface water data, compiled the data obtained, and prepared summary graphics and documents presenting groundwater flow directions and depth. The documents were prepared and sealed using Jonathan’s State of California Certified Hydrogeologist stamp.


Earthquake Fault Rupture Hazard Analysis, San Diego

GDS was retained by the developer to provide its professional opinion regarding the earthquake fault hazard for a site in the Little Italy area of San Diego.

GDS evaluated numerous data sources from private and public records regarding geologic and geotechnical conditions in the immediate vicinity of the site, compiled the data obtained, and prepared summary graphics and documents indicating that, in its opinion, the potential for the site to be underlain by an active fault was very low. The documents were prepared and sealed using Jonathan’s State of California Certified Engineering Geologist stamp and were accepted by the City of San Diego. As a result additional investigations were not required (although the city had initially indicated that they were) and the developer saved time and money in moving forward with the project.