1. Metales y Derivados Cleanup Accomplishments  Four-phase remedial plan  Removal/Stabilization action -2000 tons of waste disposed  Capping remedy underway Drums & Sacks Removed Interim TarpsAccess restricted Promote Early Risk Reduction & Site Stabilization Actions SEMARNAT is Already Using This Risk Management Approach

2. Overview of US Programs to Address Contaminated Sites  RCRA a program for existing sites: Lists facilities but does not rank them; Set goals to prioritize resources; Industry funded cleanups; Federal oversight of State-led cleanups.  Superfund a program for abandoned sites Ranks sites to qualify access to funding; Government funded cleanup, but with provision for “cost-recovery”; Federal Facilities Agreement tool.

3. Overview of RCRA Program  RCRA is a program to manage solid and hazardous waste.  Key hazardous waste components of the program: Defines a hazardous waste Issues operating permits  Hazardous waste generators  Treatment, storage, or disposal facilities Tracks the generation of hazardous waste (“manifests”)  RCRA has a four-phase Corrective Action (CA) Program: RCRA Facility Assessment RCRA Facility Investigation Corrective Measures Study (CMS), and Corrective Measures Implementation (CMI)

4. Corrective Action Program  When is corrective action (CA) required? When applying for a permit, Upon discovering a release, or Upon discovering other SWMU or releases.  How many facilities are subject to cleanup under RCRA? Currently about 6,900 facilities About 3,746 have CA underway or will need to. Facility owner/operators (including federal, state, and local Gov) are responsible for implementing corrective actions For more information see web page: http://www.epa.gov/epaoswer/hazwaste/ca/f acility.htm#2020

5. 2020 Corrective Action Universe: 3,746 Facilities Sorted by EPA Region, State, County, and City  Region State County City EPA ID Facility Name Remedy Construction  3358 9 AZ Maricopa Phoenix AZT050010180 Onyx Environmental Services Loc  3359 9 AZ Maricopa Phx AZD049318009 Clean Harbors Arizona Llc  3360 9 AZ Maricopa Tempe AZD085459535 Goodrich Turbomachinery Products  3361 9 AZ Maricopa Tolleson AZD980735500 World Resources Co.  3362 9 AZ Maricopa Tonopah AZT000624429 Aps Company - Pvngs  3363 9 AZ Mohave Lake Havasu AZD041458555 Mcculloch Facility  3364 9 AZ Pima Davis Monthan AZ4570024055 Usaf Davis Monthan Air Force Base  3365 9 AZ Pima Marana AZD980818165 Evergreen Air Center  3366 9 AZ Pima Tucson AZD980880819Esco remedy constructed  3367 9 AZ Pima Tucson AZD000819615 University Of Arizona  3368 9 AZ Pima Tucson AZD980892897 Safety Kleen Systems Inc  3369 9 AZ Pima Tucson AZT000623702 Ibm Corporation  3370 9 AZ Pinal Coolidge AZD081705402 Heritage Environmental Srvcs Llc  3371 9 AZ Pinal Oracle AZD980665814 University Of Arizona Page Ranch  3372 9 AZ Pinal Red Rock AZT050010453 Aps Saguaro Power Plant  3373 9 AZ Santa Cruz Nogales AZT000612135 Conn-Selmer Inc  3374 9 AZ Yuma Yuma AZ5213820991 Us Army Garrison Yuma Proving Ground  3375 9 AZ Yuma Yuma AZR000037382 Barry M. Goldwater Range Wstrn Half  3376 9 CA Alameda Alameda CA1170090012 Cso-Sfba, Alameda Point Annex (Formally  3377 9 CA Alameda Berkeley CA4890008986 Lawrence Berkeley National Laboratory  3378 9 CA Alameda Berkeley CAD009110867 Courtaulds Aerospace (Desoto)  3379 9 CA Alameda Berkeley CAD027909886 Alcan Ingot & Powders  3380 9 CA Alameda Fremont CAD000051433 New United Motor Manufacturing, Inc.  3381 9 CA Alameda Fremont CAD009152364 Henkel Surface Technologies  3382 9 CA Alameda Livermore CA2890012923 Sandia National Laboratories  3383 9 CA Alameda Newark CAD009147000 Fmc Corporation  3384 9 CA Alameda Newark CAD056197601 Romic Environmental Technologies Corp  3385 9 CA Alameda Newark CAD066562521 Ashland Chemical Co  3386 9 CA Alameda Newark CAD074644659 Newark  3387 9 CA Alameda Newark CAD980887418 Evergreen Oil, Inc.  3388 9 CAAlameda Oakland CA4170090027 Fleet And Industrial Supply Ctr This is public information http://www.epa.gov/epaoswer/hazwaste/ca/facility.ht m#2020

6. Prioritizing Resources: RCRA No ranking: To prioritize resources, EPA established specific short-term goals for the 1,968 highest-priority facilities on the current RCRA Cleanup Baseline.RCRA Cleanup Baseline Other steps: Create solid waste management units (SWMU’s) to facilitate management

7. Overview of Superfund Program  Why Superfund? Provides for national emergency response Provides government witht the resources to remediate abandoned sites or those that have a recalcitrant PRP Makes responsible parties pay via a financial recovery mechansim Established a strong incentive to prevent chemical releases because of “liability” clause  A site must be “listed” in order to qualify for use of “Superfund” funding  Superfund sets priorities for use of the fund based on ranking using criteria in the hazard ranking system.

8. Prioritizing Resources: Superfund  The HRS score for a site is determined by evaluating four pathways of potential human exposure: Ground water migration (drinking water); Surface water migration (drinking water, human food chain, and environmental); Soil exposure (resident population and nearby population); and Air migration (population, sensitive environments).  Any site scoring 28.5 or above is eligible for the National Priorities LIst.

9. Recommendations for Setting Priorities 1. Prioritize remedial programs based on: Sites with a known responsible party (owner/operator); Abandoned sites; Create other sub-lists as necessary to create a manageable work-load (ranking not always necessary to set priorities). 2. Prioritize based on a known release and a pathway that poses the greatest threat of exposure. 3. Facilitate management based on chemicals associated with industry-sectors. 4. Promote early risk reduction and site stabilization at all contaminated sites. * Facilitate public involvement – it will take longer, but will be provide long-term benefits