SAWPA-AWQ-coverThe Santa Ana Regional Water Quality Control Board has adopted DBS&A’s ambient water quality determinations for total dissolved solids (TDS) and nitrate-nitrogen for all 37 of the groundwater management zones (GMZs) contained within the 2,840 square-mile Santa Ana Watershed in 2015.

DBS&A’s submittal of the updated 2015 TDS and nitrate-nitrogen ambient water quality (AWQ) determinations and assimilative capacity findings was accepted by the Santa Ana Water Board on March 23, 2018 as part of ongoing efforts to mitigate Basin Plan watershed salt loads. The Santa Ana Water Board’s acceptance further resolved that DBS&A report findings of ambient water quality was in compliance with the Salt Management Plan Monitoring Program Requirements that address TDS and nitrate in surface water and groundwater.

In issuing Resolution R8-2018-0027, the Santa Ana Water Board has directed staff to use DBS&A’s report of “…updated ambient TDS and nitrate-nitrogen determinations and assimilative capacity findings to develop appropriate waste discharge requirements or water recycling requirements.”

According to DBS&A’s Senior Vice President and Principal Hydrogeologist, Dr. Steve Cullen, PG, “DBS&A’s team of hydrogeologists, modelers, and data analysts have put together a remarkable product—we’re very proud of DBS&A’s contribution to the protection of water quality in the Santa Ana River Watershed.”

The 2015 ambient water quality determinations are currently being incorporated into the Santa Ana Watershed Project Authority’s One Water One Watershed (OWOW) 2018 Update to the Integrated Regional Water Management (IRWM) plan.

DBS&A’s TDS Trends Study, recently completed for the Southern California Salinity Coalition and the National Water Research Institute, by DBS&A is also being incorporated into the OWOW update. Click here to learn more.

Resolution No. R8-2018-0027 can be found online here.

Links to the technical memorandum developed by DBS&A are located on the Board’s website:

DBS&A’s Founder and Principal Hydrologist, Daniel B. Stephens, Ph.D., P.Hg., P.G., has been selected as the recipient of the 2017 Groundwater Resources Association (GRA) of California’s Lifetime Achievement Award. This award is presented to individuals for their exemplary contributions to the groundwater industry, contributions that have been in the spirit of GRA’s mission and organization objectives. Like past recipients of the Lifetime Achievement Award, Dr. Stephens has dedicated his career to the groundwater industry and has been a pioneer in his field of expertise; specifically, applied analyses of vadose (unsaturated) zone processes that play a vital role in quantifying groundwater recharge rates and understanding infiltration processes and contaminant transport. Dr. Stephens was recognized at GRA’s Annual Conference in Sacramento, California, on October 3-4, 2017.

Dr. Nicole Sweetland, Principal Hydrogeologist of DBS&A and President of DBS&A’s parent company, Geo-Logic Associates (GLA), congratulates Dan on this recognition of his significant and enduring impact on the scientific community. “Dan has been a tremendous mentor to me in my career and I could not be more proud.”

Dr. Stephens began private consulting in 1976 and founded Daniel B. Stephens & Associates, Inc. (DBS&A) in 1984. With a modest start in Socorro, New Mexico, DBS&A grew to a $17-million corporation with seven offices in California, New Mexico, Colorado, and Texas. In 2015, DBS&A joined forces with GLA and now has 27 offices and more than 250 employees in the U.S. and abroad.

As the founder of DBS&A, and a GRA member for 15 years, Dr. Stephens has aligned himself with the mission and objectives of the GRA, promoting his colleagues’ professional development, and achieving technical excellence over his lifetime through research, innovation, and education. Learn more about Dr. Stephens.