Infiltration at Industrial Sites – Overcoming Institutional Barriers
California’s prolonged drought has increased awareness of storm water as a valuable resource, and storm water capture and infiltration to recharge groundwater has become a key strategy for enhancing water supply reliability. As a result, there is a substantial increase in the number of small and large scale storm water capture projects proposed by municipalities throughout California.
In contrast, storm water capture and infiltration at industrial sites is much less common and is expressly forbidden in some jurisdictions. This presentation will explore the institutional barriers that currently prevent, or raise significant concerns, for infiltrating storm water at industrial sites.
This presentation will summarize the results of long term monitoring of infiltrating storm water at industrial sites and will provide conclusions regarding the risk to underlying soil and groundwater quality. To the extent that many industrial sites are located in areas where soil and groundwater may be impacted with volatile organic compounds or other contaminants, this presentation will present recommendations for site screening and due diligence. Finally, this presentation will provide design recommendations, including pre-treatment, to address concerns regarding long term risk of soil and groundwater impacts.
Timothy Simpson is a Vice President and Principal Engineer with GSI Environmental and has more than 30 years experience providing environmental and engineering consulting services to a wide variety of clients.
For the past 25 years, Mr. Simpson has worked for municipal and industrial clients on issues related to NPDES permit compliance, including developing and managing analytical monitoring programs, evaluating best management practices, developing short-term and long-term approaches to help industry comply with storm water regulations in California and throughout the western United States. He manages several industrial storm water monitoring groups in California and has provided expert consulting services on numerous litigation matters where industrial dischargers have been sued by environmental groups. He has also worked on several criminal cases involving storm water discharges and the Clean Water Act.
Mr. Simpson holds Bachelors and Masters of Science degrees in Civil Engineering and is a registered Civil and Geotechnical Engineer in California
Marty Spongberg, PhD, PE, PG, is a Senior Associate with Amec Foster Wheeler with more than 30 years of professional experience, primarily in the fields of hydrology, storm water engineering, and hydrogeology. Dr. Spongberg is California-registered in both civil engineering and geology. For the last 15 years, his practice has focused on designing and implementing storm water infiltration BMPs, and assessing the hydrogeologic fate of infiltrated storm water.