Download - California Health Risk Assessment Guidance Changes: Potential Impacts to Business 10-16-14
California HRA Guidance Changes:
Poten&al Impacts on Business
BlueScape Environmental James Westbrook, President
McKenna Long & Aldridge
Chuck Pomeroy, Partner
October 16, 2014
Agenda
• California HRA1 Guidance Changes • Poten&al Business Impacts • Possible Agency Response
– Air District Permits (New Source Review) – California Environmental Quality Act – AB2588 Air Toxic Hot Spots Regula&on – Proposi&on 65
• Recommenda&ons / Summary
1HRA = health risk assessment
CA HRA Guidance – What Changed? • Air Toxics Hot Spots Guidance Manual1
– AB2588, Health & Safety Code Sec. 44300, 1987 – Children’s Environmental Health Protec&on Act of
1999, H&S Code 39606
• Advanced science to protect infants and children
• Technical Support Documents adopted – Noncancer Reference Exposure Levels (2008) – Cancer Potency Factors (2009) – Exposure Adjustment Factors (2012)
1Office of Environmental Health Hazard Assessment (OEHHA) www.oehha.ca.gov/air/hot_spots/index.html
HRA Guidance Manual Update Process
• Draf Guidance released to public, 6/20/14 • Public comment and workshops, closed 8/18/14 • OEHHA Response to comments, Sep 2014 • Draf Guidance released to Scien&fic Review
Panel (SRP), 10/14/14 – SRP Mee&ng 11/12/14
• Future Events: – Final SRP adop&on of Guidance Manual – Update and release of the HotSpots Analysis and
Repor&ng Program (HARP) – California Agencies will adopt the Guidance Manual
Effec%ve Nov 2014 or later
HRA Guidance Detailed Changes Inhala&on Cancer Risk Calcula&ons Assump%on Current Updated
Residen&al Exposure Dura&on
70 years Recommended 30 years
Age Bins One -‐ Adult Six bins
Age Sensi%vity 1.0 from 0 to 70 years
Age Sensi%vity Factors (ASFs) by bins
Breathing Rate Profiles
child, adult by age bins
Breathing Rate Percen%le
95th percen%le, with interim 80th percen%le
Recommended 95th percen%le
Worker Exposure Dura&on
40 Years Recommended 25 years
Frac&on &me at home
1.0 by age bins
Age Sensi&vity Factors (ASFs)
Age Group ASF 3rd Trimester to 2
years 10
2 years to 16 years 3 16 years to 70 years 1
Effect is about 1.7 x higher residen%al cancer risk Current ASF = 1 for 0-‐70 years
Updated Residen&al Breathing Rates (L/kg-‐day)
Effect is about 1.4 x higher cancer risk, at 95th percen%le Current Breathing Rate: Adult 95th = 393 Adult 80th = 302
Age Bin
Percen%le Trimester 0<2 2<9 9<16 16<30 16-‐70
Mean 225 658 535 452 210 185
95th 361 1090 861 745 335 290
Poten&al Business Impacts • IMPACT – residen&al inhala&on risk increases:
– 3 &mes higher using 70-‐yr exposure, 95th percen&le breathing rates
– Higher if mul&-‐pathway pollutants involved • Greater difficulty gekng air permits
– Cancer risk threshold 10 in one million with controls, 1 in one million without controls
– Outright permit denial – Project design change requirements – Opera&onal constraints, limits – Air emission control installa&on
Poten&al Business Impacts (con’t) • Need for refined HRA analysis
– Greater costs, consultants and review fees – Review delays
• CEQA projects – diesel engine emissions, impacts to construc&on project approval
• AB2588 Hot Spots – New facili&es, re-‐open most past HRAs – Risk no&fica&on, risk reduc&on requirements
• Worker risk could decrease with 25-‐year exposure
California Air Districts: Air Permits -‐New Source Review
Air District Rule / Policy Status
South Coast AQMD Rule 1401 Changes in Review1
Bay Area AQMD Reg 2 Rule 5 Residen&al ASFs already adopted2, addi&onal changes for breathing rates pending
San Joaquin Valley APCD
Policy APR-‐1905
Public workshop on 10/9/14, staff report3
1www.aqmd.gov/docs/default-‐source/Agendas/Governing-‐Board/2014/may-‐specsess-‐8b.pdf 2www.baaqmd.gov/Divisions/Engineering/Air-‐Toxics/Review-‐of-‐Air-‐Toxics.aspx 3www.valleyair.org/Workshops/pos&ngs/2014/10-‐09-‐14_OEHHA/Draf-‐Staff-‐Report-‐9-‐23-‐14.pdf
Air District Adop%on Process? Assump%ons? Significance Thresholds?
Other Regula&ons
• California Environmental Quality Act
• AB2588 Hot Spots Regula&on • Proposi&on 65
Recommenda&ons / Summary • Know HRA Guidance changes may lead to
significant impacts and costs to business • Get permit approvals now, ahead of District
implementa&on • Get involved, par&cipate in the proceedings • Plan for changes, build impacts into feasibility
review and design • Consider a refined HRA to get approval … but • Know a refined HRA can lead to permikng
delays • Follow this developing story
Ques&ons? Contact Informa&on James Westbrook, President BlueScape Environmental Office: 858-‐695-‐9200 x201 Mobile: 858-‐774-‐2009
[email protected] www.bluescapeinc.com
Chuck Pomeroy, Partner
McKenna Long and Aldridge, LLP Office: 213-‐243-‐6256
[email protected] www.mckennalong.com
