Loading...
HomeMy WebLinkAboutItem 7 PPP 03-04-2020 Operations Committee - PFAS PFAS tam Informational Update �, , �• 15 ' Lan Wiborg, Director of Environmental 4M rib Services Operations Committee March 4 2020 I, PAL ;• . nCY I '^.CD4 : � . PFAS (per- a • • • • • substances) F F F F F F 0 \ �C\ �C\ �C\ �C\ • Class of over 4,000 man-made °H chemicals PFOA -1peffluorooclanoic acid • Extremely stable and persistent \ � \ • Upside: Stable, versatile, water/oil \ ,C\ /C\ /CXC \ resistant C C S03H \ • Downside: Persistent in environment F F and body PFOS -1pedluorooctanesulfonic acid : � . -PFAS �ate- CContaminant of Emerging Concern (CEC) . 4 °= CECs may or may not be regulated but pose some health or environmental concerns Some Examples CECs w Timeline IMM PCBs 1970s-1980s DTC & N D MA 1990s-2000s 1 A-dioxane 2000s-2010s Microplastics 2010s- PFAS 2010s- PFAS ►V 4 1 In Everyday Lives 21a� Examples �ra�poo COOk,St'ck warc" Liquid — surfactants, AFFF, cleansers, industry Coatings — carpets, textiles, waxes, paints d ^ .0 0 0' N Materials — clothing, food package, pans, floss Sources PFAS • "Of . _ cod % �- � �l. Avast acka9 ry d Fir�oa�s ti 9 ae Source: Australian Department of Defense �V PFAS 4 °= Potential Human Health \ ➢ Carcinogenicity Kidney and testicular cancer ➢ I m m u notoxicity Ulcerative colitis, immune dysregulation ➢ Endocrine toxicity Thyroid disease ➢ Reproductive toxicity Pregnancy-induced hypertension ➢ Cardiovascular toxicity Increased serum cholesterol : � . PFAS Reducing Exposure 2018 Background levels us • • • , 61 Phase-out Blood Level Foundation PFOS 2002 70% P FOA 2015 84% 10,000-50,000 25 370,000 Drinking water and wastewater systems do not produce or use PFAS chemicals (LZOZ :)CD) ue@w :)III@ O@O a �a� D VZOZ - 1 OZ OZOZ 80OZ 90OZ VOOZ OOOZ 0 rD S co O OT O CL Sti T ` NJd D V) OZ r SXHJd < SZ VOJd --*-- N o'Q SOJdt SE � a • • • • PUOJ.LBulseenea M- .. . POOIS uewnH USEPA's PFAS Action Plan =y Released in February 2019 (Source: SWRCB) " TOXICOLOGY DRINKING WATER MONITORING CLEANUP Develop toxicity thresholds Consider MCLs & broader Enhanced nationwide HAS Designate PFOS & PFOA as for 21 PFAS PFAS regulation drinking water monitoring hazardous substance& in next Unregulated develop interim Contaminant Monitoring groundwater cleanup qF Rule (UCMR4) recommendations CALIFORNIA qqk Water Boards State A Drinking Water y. , . Source: SWRCB July 2019 2013-2015 June 2018 • California Assembly Bill 756 October 2019 • State Water Board • Requires notification to • Water Quality • USEPA Third Unregulated Interim Notification Levels consumers for PFAS detected Investigative Contaminant Monitoring Rule . PFOA: 14 ppt, PFOS: 13 ppt above NIL Orders to Chrome (6,400 samples collected in CA) • Effective Jan 1, 2020 Plating Facilities May 2016 February 2019 March/April 2019 August 2019 Februar2020 USEPA — USEPA — Water Quality Investigative Lower notification Lower Lifetime Health PFAS Action Plan Orders to Landfills and Airports levels response levels • Public Water System Sampling • PFOA: 5.1 ppt Advisory of 70 ppt Orders adjacent to the Airports and • PFOA: 10 ppt 1 p PFOS: 6.5 ppt • PFOS: 40 t Landfills pp Action : AB 756 State Source: SWRCB " low, i January 2020 July/August 2020 Summer 2021 Fall 2022 Summer 2023 • AB 756 statute OEHHA initiates • OEHHA releases • Board Hearing • Water Board submits changes become scientific peer final PHGs and on MCLs and regulation package to effective review of draft responses to close of Office of Adrninistrative PHGs comments comment period Law (OAL) for approval 0 April/May 2020 Fall 2020 Summer 2022 Spring 2023 Fall 2023 OEHHA releases OEHHA releases p • Water Board Board adoption • OAL approval, • draft PHGs for 2nd publicreleases draft review hearing on MCLs become i public comment draft of PHGs for package and MCLs regulation MCLs effective public comment begins public comment period C 7.-N,A Water Boards , 27 Upcoming State Actions Source: SWRCB - r=� • Additional sampling outwards from impacted public water supply wells Q Focused watershed-based source & public water system investigations Sampling at Wastewater Treatment Facilities (influent, effluent, and Enj biosolids) 6M Source investigations at Refineries and Bulk Terminals I Integration of data from DoD and additional sampling of public X® water system wells around impacted installations QIdentify strategies for domestic well sampling in impacted areas Data analysis and visualizations to inform the public and decision li _ makers - 1 Potential Impact to OCSD WWII Z � GE Cp � G • �P �'�► OIL .. .. .. � , .; ►� �� �FR D 1 s�� Lam. OCSD Current Actions • Communication • Aligning messaging and resources with other agencies • Engaging regulators, legislators, and community stakeholders • Federal and state advocacy • Participating in method development • Participate in a CASA-led review of PFAS health effects • Conducting industrial surveys in line with state's approach • Evaluating screening levels for discharge requests LTa OCSD Future Actions • Coordinate PFAS management with other agencies • Implement Policies & Standards (limits, conditions, etc.) • Find , inspect, monitor, and permit potential sources • Sample and analyze using EPA-approved methods • Track and adapt to evolving federal/state regulations • Optimize monitoring and reporting process Ke Messages r = -IVA R 1 . PFAS are ubiquitous in our homes and environment 2. OCSD is committed to protecting the environment and public health against the adverse impact of PFAS I PFAS producers and heavy users are not the same as `receivers' 4. Remove and treat PFAS at the source 5. Base regulation and response on sound science 6. Avoid risk transfer and unintended consequence 7. Need permanent disposal/sequestration options PV Q ' uest 'ions . %I�K.-0�2 k omparison ,� t 4 Foundation cosmetic 2,370 ppb PFOA Pork liver in Taiwan 283 ppb PFOA Dust in daycare center 142 ppb PFOA (median) Household food waste 6 ppb all PFAS (mean) US human blood serum (NHANES) 2 ppb PFOA (mean) Control garden soil 0.36 ppb PFOA (median) DDW Notification Levels 0.014 ppb PFOA; 0.013 PFOS