SacPEMA May General Meeting - Tuesday, May 15, 2018

Synopsis: A Cal/EPA Unified Approach to Evaluating and Managing Vapor Intrusion Risk 

Faced with spatial and temporary variability of data, sewers as a preferential pathway, and uncertainty concerning attenuation factors, the Department of Toxic Substances Control (DTSC), the San Francisco Bay Regional Water Quality Control Board (RWQCB), and the State Water Resources Control Board (SWRCB) have joined forces to develop supplemental Vapor Intrusion (VI) guidance.  The workgroup developed a 4-step process to protect current occupants of buildings near known or suspected releases of vapor forming chemicals (VFCs) during a site investigation and future occupants after the site is fully characterized.  This will bring state-wide consistency and improve risk management.  This proposed step-wise process streamlines the currently recommended approach in existing State guidance.  This presentation will touch on the key points of this proposed guidance. 


Biography of Speaker: Mr. Claudio Sorrentino, DTSC

Mr. Claudio Sorrentino is the Senior Toxicologist and Chief of the Northern California Unit of the Human and Ecological Risk Office (HERO) at the Department of Toxic Substances Control (DTSC).  He gives scientific and technical advice to various programs within DTSC and to other agencies on risk assessment, exposure assessment, and toxicological issues.  He graduated from the School of Pharmacy of the University of Rome "La Sapienza", Italy where he also earned a graduate degree in Pharmacology / Toxicology.  In 2004, he earned his Ph.D. from New York University in Environmental Health Sciences for his research on the toxic effects of co-exposure to metals and aromatic hydrocarbons in fish from the Hudson River.  Between 2004 and 2007, he was a post-doc in Environmental Toxicology at U.C. Davis with Mike Denison studying molecular mechanisms of dioxins and dioxin-like chemicals.  He was one of the authors of the Interstate Technology and Regulatory Council (ITRC) guidance on Environmental Molecular Diagnostics, the co-leader of the 3rd Risk Assessment ITRC team, and of the ITRC team on Bioavailability in Contaminated Soil.  Claudio is also the co-chair of the Cal/EPA workgroup on Vapor Intrusion that is developing the 2018 VI Supplement.

Date: Tuesday, May 15, 2018

Time: 11:30 a.m. to 1:00 p.m. (registration/networking from 11:30 a.m. to noon)

Where: Firehouse Restaurant, 1112 2nd Street, Sacramento, CA 95814


  • Blackened Chicken Sandwich - warm brie cheese, red bell pepper relish, pickled cabbage celery salt Aioli
  • Grilled Steak and Prawn Salad - mixed endive lettuce, blue cheese, smoked tomato garlic crutons, red wine dressing
  • Local Pesto Pasta (vegetarian option) - daily pasta, local basil pesto, pine nuts, asiago cheese


  • Members - $25.00 + $0.90 cc fee
  • Non-Members - $35.00 + $1.10 cc fee
  • Walk-ins - $40.00


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Who We Are:

The Professional Environmental Marketing Association (PEMA) is an organization comprised of local and regional chapters whose membership is involved in business development, sales, marketing, and other related professional activities in the environmental field. The Sacramento California Chapter of PEMA operates in the greater Sacramento metropolitan area which includes Sacramento, El Dorado, Placer, Yolo, and San Joaquin counties.

Sacramento PEMA was founded as a marketing and networking organization in 1995 as an affiliate of the Northern California Chapter of PEMA. Networking encourages formation of business relationships, development of business and teaming opportunities, and exchange of ideas. Sacramento PEMA recently broadened its scope to provide technical and regulatory information of interest to its members.