On July 16, 2025, Dan Hirsch, President of Committee to Bridge the Gap, gave a presentation to the NRC about the devastating consequences that would result from abandoning the linear no-threshold model of low-dose radiation exposure. Dan urged the NRC to tighten, not weaken, radiation protection standards.
Dan’s presentation was part of NRC’s public meeting to receive public input about President Trump’s Executive Order 14300 Section 5(b), which directs the NRC to “reconsider” its use of the linear no-threshold model of low-dose radiation exposure. The linear no-threshold model has long been the bedrock of radiation protection; without it, the public could be exposed to levels of radiation 100x to 1,000x higher than is allowed today.
Download the slides from Dan’s presentation by clicking here.
In 2021, Dan gave a presentation on a related topic – the long history of underestimating radiation risks – to the National Academies of Science, Engineering, and Medicine. Check out this 2021 presentation by clicking here.
Nuclear Policy...
Implications of Weakening Radiation Protection Standards – Dan Hirsch Presentation to NRC
On July 16, 2025, Dan Hirsch, President of Committee to Bridge the Gap, gave a presentation to the NRC about […]
Read More Trump’s $4 Trillion Plan to Raise Your Energy Bills (Rolling Stone)
The Trump administration released three executive orders on nuclear energy on the Friday afternoon before the Memorial Day weekend – […]
Read More When you combine AI and nuclear power, the results can be catastrophic (The Hill)
When you combine AI and nuclear power, the results can be catastrophic (The Hill) Linda Parks has an op-ed in The […]
Read More Critics fear PG&E’s aging Diablo Canyon power plant costs may be twice the initial estimates (NBC Bay Area)
Critics fear PG&E’s aging Diablo Canyon power plant costs may be twice the initial estimates (NBC Bay Area) The cost […]
Read More 5th Circuit vacates Holtec CISF license (Beyond Nuclear)
5th Circuit vacates Holtec CISF license (Beyond Nuclear) The U.S. Court of Appeals for the 5th Circuit, in New Orleans, […]
Read More Anti-nuclear activists file appeal over Diablo Canyon Nuclear Power Plant’s safety operations (KCBX)
Anti-nuclear activists file appeal over Diablo Canyon Nuclear Power Plant’s safety operations (KCBX) Two nonprofit groups, Mothers for Peace and […]
Read More Fifth Circuit Court of Appeals Vacates Texas CIS License
Fifth Circuit Court of Appeals Vacates Texas CIS License In a victory for advocates of nuclear responsibility, the United States […]
Read More Public Interest Groups Take On Newsom Administration Over Backtracking On Cleanup Of Radioactivity At Santa Susana Site
public interest groups take on newsom administration over backtracking on cleanup of radioactivity at santa susana site In an appeal […]
Read More Friends of the Earth Files Lawsuit to Enforce the PG&E Agreement to Phase out Diablo Nuclear Plant
Friends of the Earth Files Lawsuit to Enforce the PG&E Agreement to Phase out Diablo Nuclear Plant The organization says […]
Read More SLO Mothers for Peace lay out opposition to possible extension of Diablo Canyon operations (KSBY)
Daniel Hirsch, President of the Committee to Bridge the Gap, claimed that the Diablo Canyon nuclear plant was built near […]
Read More Dan Hirsch radio interview on KTRC Santa Fe
Dan spent a half hour on Santa Fe-based radio station KTRC talking with host Richard Eeds about radioactive waste at […]
Read More Thirteen Organizations Oppose John D. Graham\’s Membership on National Academies Low-Dose Radiation Committee
On July 22, a comment letter signed by thirteen environmental and public interest groups was sent to the National Academies\’ […]
Read More VICTORY—Nuclear Regulatory Commission Withdraws Widely Condemned Proposal to Deregulate Most Radioactive Waste
CBG, working closely with NRDC, PEER, NIRS, and PSR helped lead opposition to an extraordinary plan by NRC to allow […]
Read More Environmentalists Fault Sending ‘Very Low Level’ Nuclear Waste to Landfills
Click here to read the article.
Read More Advocates raise questions about proposal to allow some nuclear waste to be disposed in landfills
Read the article here. “What they’re trying to do is prop up a failing industry so that the cost of […]
Read More Families affected by cancer want state officials to lead cleanup of Santa Susana
Read the KCRW story by clicking here. Listen to the audio below: Families affected by cancer want state officials to […]
Read More CBG\’s Comment on the Final Environmental Impact Report for San Onofre Nuclear Generating Station (SONGS) Units 2 and 3 Decommissioning Project
Read CBG\’s comment letter to Controller Betty Yee, Lieutenant Governor Eleni Kounalakis and Finance Director Keely Bosler by clicking here. […]
Read More Dan Hirsch interview with Physicians for Social Responsibility
Interview conducted by David Bezanson, MD, of Physicians for Social Responsibility Read the interview by clicking here
Read More Massive Woolsey Fire Began On Contaminated Santa Susana Field Laboratory
CLOSE TO SITE OF PARTIAL MELTDOWN Electric Substation at SSFL Tripped 2 Minutes Before Fire Reported For Immediate Release: November 12, […]
Read More Navy used obsolete safety standards in shipyard cleanup, researchers say
Read the SF Chronicle report regarding radioactive contamination at Hunter\’s Point: According to a new report, the Navy, which is supposed […]
Read More Hunters Point Radioactive Contamination \’Was Far Greater\’ Than Thought, Researchers Say
KCBS reports: SAN FRANCISCO — Contamination is more widespread in San Francisco\’s Hunters Point section than previously acknowledged, according to […]
Read More New report heightens radiation concerns at SF Hunters Point
Fox 2 reports: SAN FRANCISCO – A meeting was held Thursday night to go over the latest reports on potential contamination […]
Read More New reports suggest Navy likely spread radiation all over Hunters Point, never checked for contamination
Read the Curbed San Francisco report here.
Read More Report: No Data Exists To Support Presumption Of Safety At Shipyard
The SF Chronicle reports: An independent report, one of two released Thursday on the safety of the former Hunters Point […]
Read More READ: California State Lands Commission’s Draft Environmental Impact Report for Decommissioning the San Onofre Nuclear Plant
CBG and other groups lodged their comments with the California State Lands Commission: At the core of environmental review are […]
Read More Toxic Relationship: The Fraud at Hunters Point
Click here to read the report by the SF Weekly: Not far from the radioactive soil of Hunters Point, city environmental […]
Read More S.F. Supervisor Calls for Hearing Into Hunters Point Shipyard Cleanup
KQED reports . . . Meanwhile, Hunters Point: removing the redactions in Chicago, a faked cleanup stalls affordable housing, and […]
Read More PEER: RADIATION PROBLEMS MULTIPLY FOR SAN FRANCISCO’S HUNTERS POINT
Nearly All U.S. Navy Radiation Samples Were Falsified, Fraudulent or Unreliable For Immediate Release: Monday, April 9, 2018 Contact: Kirsten Stade […]
Read More San Onofre Update
On December 2, 1942, the first high level nuclear waste in the world was created. Three quarters of a century […]
Read More Radiation Protection Standards Weakened CBG and PEER to File Suit
EARLIER THIS YEAR, DESPITE YEARS OF EFFORTS by Bridge the Gap, EPA issued new Protective Action Guides (PAGs) which dramatically […]
Read More True or False: Three Mile Island: America’s Worst Nuclear Accident? — Expert Weighs In (and the Answer Might Surprise You) (Pt.7)
Read the interesting article here.
Read More Santa Susana Cleanup in Danger
by CBG President Dan Hirsch SEVENTY YEARS AGO, A facility for testing nuclear reactors and rockets too dangerous to be […]
Read More EPA Says Higher Radiation Levels Pose ‘No Harmful Health Effect’
Bloomberg News reports on EPA\’s plan to raise radiation standards. Click here. In the event of a dirty bomb or […]
Read More Committee to Bridge the Gap\’s Comments on DTSC\’s Proposed Regulations for Toxicity Criteria for Human Health Risk Assessment
Re: DTSC Reference Number R-2016-8 20 September 2017 CBG Toxicity Criteria Rule Comments (pdf) DTSC Toxicity Criteria Excel Sheet Comparison […]
Read More Boeing altered its cleanup plan for toxic Santa Susana land. Here’s why that worries local leaders
Boeing altered its cleanup plan for toxic Santa Susana land. Here’s why that worries local leaders
Read More The Ethics and Politics of Nuclear Waste are Being Tested in Southern California
Read the Counter Punch report by clicking here.
Read More California to be Nuclear Free by 2025
In a stunning turn of events, Pacific Gas & Electric, the operator of the Diablo Canyon Nuclear Plant on the […]
Read More SANTA SUSANA: The Battle for Cleanup Continues
The battle to ensure a full cleanup of the Santa Susana Field Lab increased in intensity in 2016 and 2017. […]
Read More DOE’s Draft EIS Violates Federal Law, DOE’s Written Agreement with California and Leaves Up to 94% of Contamination at SSFL Not Cleaned Up
On January 6, 2017 the Department of Energy (DOE) released its draft environmental impact statement (DEIS) for its proposed cleanup […]
Read More Year-Long Investigation into LA\’s Nuclear Secrets
All five parts of this ground-breaking investigative series can be watched by clicking here. In 2015, The investigative team from […]
Read More Are the EPA’s Emergency Radiation Limits a Cover for Fukushima Fumbles?
Are the EPA’s Emergency Radiation Limits a Cover for Fukushima Fumbles? Read the report here.
Read More CBG\’s 2016 Annual Report
2016 was a productive year for CBG and a busy year for nuclear issues. Read our annual report here (.pdf)
Read More EPA Administrator Gina McCarthy Defends Plan for Drinking Water
Read more from NBC Bay Area here…
Read More Dept. of Energy secretly funding front group to sabotage its own Santa Susana Field Lab cleanup
Read the article on the Department of Energy\’s remarkable efforts to sabotage it\’s own cleanup commitments HERE.
Read More Does California shutdown mean the end of nuclear power? Not so fast.
Read the Christian Science Monitor report here.
Read More CBG\’s Annual News Letter! 2015 Edition
In this edition we discuss the slow moving progress to clean up the Santa Susana Field Laboratory. We also look […]
Read More Racist remarks in emails put California officials on defensive
The Sacramento Bee reports here.
Read More CBG & Other Groups Oppose EPA\’s Proposed Huge Increase in Permissible Radioactivity in Drinking Water
Read the group letter by clicking here. On December 5, 2015, OMB received for review from the US EPA proposed […]
Read More CBG & Other Organizations Oppose Petitions to NRC to Relax Radiation Protections and Declare Radiation Good For You
Read the letters here: Comments to NRC Opposing Hormesis Petitions for Rulemaking NRDC & CBG Comments LNT Docket 19 Nov […]
Read More Stand-down order at San Onofre questioned
The plant is closed. but radioactive material remains The San Diego Union Tribune Reports
Read More Statement by Dan Hirsch Regarding Proposed Changes to EPA’s Radiation Protection Standards for the Uranium Fuel Cycle
Statement by Daniel Hirsch Before the Radiation Advisory Committee of the Science Advisory Board, United States Environmental Protection Agency, Regarding […]
Read More Local State Regulators Face Tough Questions Over Lead Contamination Near Exide Battery Plant
CBS Los Angeles reports.
Read More Senate panel OKs head of Department of Toxic Substances Control
The LA TIMES reports here.
Read More Dan Hirsch Testifies Before Senate Environment Committee on Diablo Canyon Nuclear Plant
Read an article about the testimony here. Read Dan Hirsch\’s Senate testimony here. Read Sam Blakeslee\’s testimony here.
Read More CBG\’s 2014 Annual Report!
In this year\’s annual report, we discuss a recent court decision blocking radioactive waste shipments to unlicensed disposal sites. Earlier […]
Read More EPA Considering Further Weakening Radiation Standards
Sixty-Nine Groups Oppose Action Despite a marked increase in official estimates of how dangerous radiation is, EPA is now considering […]
Read More Advocates call for tougher leader at California Department of Toxic Substances Control
The Daily News reports here.
Read More Over 100 Groups Call on EPA to Withdraw Dramatically Weakened Radiation Guides
Over 100 environmental organizations have called on U.S. Environmental Protection Agency (EPA) Administrator Gina McCarthy to withdraw EPA’s controversial new […]
Read More CBG Releases Report Showing Radioactive Waste Was Sent to Recyclers and Landfills Not Licensed or Designed for Nuclear Waste
The Committee to Bridge the Gap has released a 114 page study by Daniel Hirsch and Ethan Miska disclosing that […]
Read More CBG\’s Dan Hirsch Co-Authors Op-Ed On Nuclear Power
Please click here to read the piece published in the San Diego Union Tribune. In the piece, CBG\’s Dan Hirsch […]
Read More San Onofre Nuclear Plant To Close
In a stunning victory for the community and for activists, Southern California Edison announced today that it would permanently close […]
Read More Worst Week Since Fukushima: 4 Major Setbacks in 3 Days are Latest Stumbles for U.S. Nuclear Power Industry
Statement by Daniel Hirsch Rather than the nuclear revival hoped for by the industry, the gearshift has been thrown hard […]
Read More White House Supports Rollback of Cleanup Standards for Nuclear Incidents
In a stunning reversal, it appears that the Obama Administration is poised to rollback cleanup standards for nuclear incidents: The […]
Read More San Onofre\’s Troubles Deepen
The San Francisco Chronicle reports that the repair costs for San Onofre are exploding. Meantime, after years of employee complaints, […]
Read More CBG Releases 2012 Annual Report
Below you will find a link to CBG\’s 2012 annual report as well as a link to our annual report […]
Read More EPA Inspector General Criticizes EPA Radiation Monitoring Network
Environmental Protection Agency (EPA) Inspector General confirms CBG Criticisms of EPA Radiation Monitoring Network Large Fraction Broken During Fukushima Crisis. […]
Read More Nuclear Power: Ethical and Policy Implications
A lecture presented by CBG\’s Dan Hirsch on the ethical and policy implications of nuclear power.
Read More CBG\’s Presentation to EPA on Efforts to Weaken Radiation Standards after Fukushima
Bridge the Gap\’s presentation to the EPA Deputy Administrator and other senior EPA officials on efforts to weaken radiation standards […]
Read More CBG, Enviro Groups Write EPA About Efforts to Relax Radiation Standards and Problems with U.S. Fukushima Radiation Monitoring
CBG along with other environmental groups wrote to eputy Administrator Perciasepe, General Council Fulton, Assistant Administrators McCarthy and Stanislaus, and […]
Read More Extraordinary AP Series on NRC Lax Regulations of U.S. Nuclear Safety
This series of articles by AP reporters discuss the loosening of safety rules for aging nuclear reactors, the the presence […]
Read More Japan crisis reminds us plutonium, CO2 not the only choices
Sacrament Bee OpEd by S. David Freeman and Dan Hirsch in which Mr. Freeman and CBG\’s Dan Hirsch contend that […]
Read More CBG, Sierra Club, NIRS Comments on NRC Proposed Revisions to Radiation Standards
At the heart of what should be the Nuclear Regulatory Commission’s prime mission is protection of the public and nuclear […]
Read More CBG Leads Effort to Get Obama EPA to Block Pending Proposals to Relax Radiation Protections
A whole range of proposals left over from the Bush Administration to markedly relax standards for radiation protection remain pending […]
Read More Bush EPA Plans For Dramatically Relaxing Radiation Protection Before Leaving Office
10/30/2008: Plans to greatly increase permissible public exposures from a wide range of events resulting in release of radioactivity were condemned […]
Read More CBG’s Hirsch testifies before U.S. Senate Environment Committee About “Nuclear Amnesia”
September 18 – At the invitation of the Senate Committee on Environment and Public Works, CBG’s Dan Hirsch testified in […]
Read More In Memoriam
Recently, we lost three Giants in the Fight to Reduce Nuclear Risks – Ted Taylor, John Gofman, Paul Leventhal. Read […]
Read More EPA Staff propose rejection of National Academy of Sciences findings on Radiation Risks
Politicized, Anti-Science Effort to Set Lax Radiation Protection Standards The EPA requested (and funded) the National Academy of Sciences (NAS) […]
Read More