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Redacción Central, 24 julio (CERES TV).- El desempleo aumentó en 207.400 personas en el segundo trimestre del año respecto al trimestre anterior, con lo que el número total de parados se situó en 2.381.500 y la tasa aumentó hasta el 10,44%, según la Encuesta de Población Activa (EPA) difundida por el INE. El dato es el más alto desde el cuarto trimestre de 2004, cuando alcanzó el 10,56%, mientras que el número total de parados es el más elevado desde octubre-diciembre de 2000, cuando superó los 2,4 millones de afectados. Entre abril y junio, el mayor aumento se produjo en el sector de la construcción con 87.100, seguido de los servicios con 39.700, el colectivo que perdió su empleo hace más de un año (29.400), los que buscan su primer trabajo (24.700), la industria (19.500) y la agricultura(7.000). En el primer trimestre de 2008, la tasa se situó en el nivel más alto de los últimos tres años, al alcanzar el 9,6%. Entre enero y marzo, el número de parados aumentó en 246.600 personas respecto a octubre y diciembre de 2007. El desempleo crece en 132.000 personas entre los españoles y en 75.300 entre los extranjeros. La tasa de paro de los nacionales es del 9,34 por ciento (62 céntésimas más) y la de los extranjeros del 16,4 por ciento (1,82 puntos más) La construcción sigue siendo la actividad más afectada por la crisis económica y en los últimos doce meses se ha saldado 211.600 nuevos parados, el 123 por ciento más que un año antes. Lea la noticia completa en su [permalik] © 2008 CERES TELEVISIÓN NOTICIAS [+info]: http://www.cerestv.info [e-mail]: noticias@cerestv.es [Permalink]: http://www.cerestv.info/noticias2008/general/2008072401.php Peticiones: Teléf.902-885.666 • Fax: 902.885.869 Author: cerestv Tags: cerestv ceres tv economia paro desempleo inem epa encuesta poblacion activa desemplado parado construccion Posted: 24 July 2008 Rating: 0.0 Votes: 0

The Hanford Nuclear site in South Central Washington State is the most polluted radioactive waste dump in the country. At the center of the Hanford reservation are hundreds of buried tanks that hold waste left over from plutonium production during World War 2 and the Cold War. A multi year, multi billion dollar clean up is underway. But there are problems: an accidental spill of tank waste shut down clean up for nearly a year. Recently, the Government Accountability Office (GAO) raised concerns about how much longer the aging underground tanks can hold up. Correspondent Austin Jenkins reports in the first of a two part series on Hanford clean up efforts.

The EPA drops the value of human life. Greensburg, Kansas rebuilds into a sustainable emerald green city. Check out the latest news in alt autos: Stella, Tesla, Tata Nano, Prius, and more. Community Site http://boldurl.com/UCgwNh69 BuyGreen.com Solio Solar Charger http://boldurl.com/Up7PpZfg _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ EPA 1 http://www.treehugger.com/files/2008/07/epa-value-life-environment-protection.php EPA 2 http://ap.google.com/article/ALeqM5i40Z1lLWhFws4xIKaXbYZ96a8y6QD91R8K800 Greensburg http://personallifemedia.com/podcasts/234-greentalk-radio/episodes/3882-rebuilding-green-community-greensburg Discovery - Planet Green http://planetgreen.discovery.com/video/ Subaru Stella http://www.ecogeek.org/content/view/1829/ Tesla 1 http://www.ecogeek.org/content/view/1835/ Tesla 2 http://www.autobloggreen.com/2008/07/12/super-secret-photo-of-tesla-whitestar-leaks-out-of-san-carlos/ Tata Nano http://www.autobloggreen.com/2008/07/10/material-prices-pushing-up-the-cost-of-the-tata-nano/ Toyota Solar Panels http://news.cnet.com/8301-11128_3-9984384-54.html?part=rss&subj=news&tag=2547-1_3-0-20 Ferrai http://www.greencarcongress.com/2008/07/ferrari-targeti.html SF Grease War http://gas2.org/2008/06/20/san-francisco-fryer-oil-skirmish/ Green Earth Technologies G-Oil http://www.ecogeek.org/content/view/1818/ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ Subscribe using your favorite platform: iTunes HTML Link http://boldurl.com/U7LdRLJ9 YouTube http://boldurl.com/UwgkpQ59 Yahoo Video http://boldurl.com/URSKS2B9 My Yahoo http://boldurl.com/U4cLNgw9 Google RSS http://boldurl.com/UHXHpxF9 AOL http://boldurl.com/U2Zbv0j9 Bloglines http://boldurl.com/U84ZQBj9 Windows Live http://boldurl.com/UPw21WZ9 Miro http://boldurl.com/UCbNSYp9 Regular RSS http://feeds.feedburner.com/zaproot RSS XML Format feed://feeds.feedburner.com/zaproot?format=xml _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ most popular tags zaproot viropop green series environment video podcast webisode eco pop culture next new networks free autobloggreen videos new stories cool cars online tv news clips earth day web auto interior design ideas going green sustainability ideas earth grist report water pollution channel solar wind alternative treehugger power geothermal energy oil fossil fuels local health greenpeace plants bike bicycle ocean weird greenhouse effect ecogeek global warming climate change worldchanging urban products fair trade coffee inhabitat water cycle shortage twisted humor cfl wacky an inconvenient truth conscious reuse environmental activism organic freecycle

The EPA drops the value of human life. Greensburg, Kansas rebuilds into a sustainable emerald green city. Check out the latest news in alt autos: Stella, Tesla, Tata Nano, Prius, and more. Community Site http://boldurl.com/UCgwNh69 BuyGreen.com – Solio Solar Charger http://boldurl.com/Up7PpZfg _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ EPA 1 http://www.treehugger.com/files/2008/07/epa-value-life-environment-protection.php EPA 2 http://ap.google.com/article/ALeqM5i40Z1lLWhFws4xIKaXbYZ96a8y6QD91R8K800 Greensburg http://personallifemedia.com/podcasts/234-greentalk-radio/episodes/3882-rebuilding-green-community-greensburg Discovery - Planet Green http://planetgreen.discovery.com/video/ Subaru Stella http://www.ecogeek.org/content/view/1829/ Tesla 1 http://www.ecogeek.org/content/view/1835/ Tesla 2 http://www.autobloggreen.com/2008/07/12/super-secret-photo-of-tesla-whitestar-leaks-out-of-san-carlos/ Tata Nano http://www.autobloggreen.com/2008/07/10/material-prices-pushing-up-the-cost-of-the-tata-nano/ Toyota Solar Panels http://news.cnet.com/8301-11128_3-9984384-54.html?part=rss&subj=news&tag=2547-1_3-0-20 Ferrai http://www.greencarcongress.com/2008/07/ferrari-targeti.html SF Grease War http://gas2.org/2008/06/20/san-francisco-fryer-oil-skirmish/ Green Earth Technologies G-Oil http://www.ecogeek.org/content/view/1818/ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ Subscribe using your favorite platform: iTunes HTML Link http://boldurl.com/U7LdRLJ9 YouTube http://boldurl.com/UwgkpQ59 Yahoo Video http://boldurl.com/URSKS2B9 My Yahoo http://boldurl.com/U4cLNgw9 Google RSS http://boldurl.com/UHXHpxF9 AOL http://boldurl.com/U2Zbv0j9 Bloglines http://boldurl.com/U84ZQBj9 Windows Live http://boldurl.com/UPw21WZ9 Miro http://boldurl.com/UCbNSYp9 Regular RSS http://feeds.feedburner.com/zaproot RSS XML Format feed://feeds.feedburner.com/zaproot?format=xml _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ most ...Author: viropop Tags: epa greensburg planet green talk radio leonardo dicaprio sustainability stella tesla tata nano prius toyota subaru san francisco g-oil zaproot Posted: 22 July 2008 Rating: 0.0 Votes: 0

Author: autoline Added: Thu, 17 Jul 2008 07:54:44 -0800 Duration: 1282John McElroy is joined by three of these environmental thought leaders as they discuss emissions, cars, MPGs and how California is driving the topic for the rest of the country. Dr. James Lents is the President of the International Sustainable Systems Research Center (ISSRC), and an acknowledged world leader in environmental policy. Roland Hwang is the Vehicles Policy Director for the Natural Resources Defense Council (NRDC), a 40-year old environmental action group with 1.2 million members while Dr. Mark Bernstein is the Managing Director of the USC Energy Institute, a LA-based university think tank devoted to transitioning the globe to a new energy/fuel paradigm. So if you're interested in the future of fossil fuels, alternative energy and where California is setting the emission trend, catch this week's edition of Autoline in LA.

At some point, citizens involved in watershed protection face the question - How do we pay for this? Most quickly realize that there are not enough grant funds to meet the needs for water quality projects. The Clean Water State Revolving Fund is a large, flexible, and largely untapped source of funding for watershed projects. It provides over $5 billion each year for traditional stormwater and wastewater projects, as well as over $200 million for nonpoint source projects, such as land conservation, agricultural best management practices, and clean-up of contaminated sites. Join us to hear more about how you can access the Clean Water State Revolving Fund to protect your watershed. To view the slides associated with this audio, please visit http://www.clu-in.org/conf/tio/owcwasrf_071608/

At some point, citizens involved in watershed protection face the question - How do we pay for this? Most quickly realize that there are not enough grant funds to meet the needs for water quality projects. The Clean Water State Revolving Fund is a large, flexible, and largely untapped source of funding for watershed projects. It provides over $5 billion each year for traditional stormwater and wastewater projects, as well as over $200 million for nonpoint source projects, such as land conservation, agricultural best management practices, and clean-up of contaminated sites. Join us to hear more about how you can access the Clean Water State Revolving Fund to protect your watershed. To view the slides associated with this audio, please visit http://www.clu-in.org/conf/tio/owcwasrf_071608/

The superfund was established to locate and clean toxic waste sites in the U.S. To learn more about the superfund and toxic waste, check out this HowStuffWorks podcast.

Indoor allergy sufferers often turn to an air filter to feel better. Are filters as fabulous as they sound?

Later this month the Sound Transit board is going to decide whether to put a new lighter light rail plan on the ballot. Last year voters turned down a transit and roads plan. This year Sound Transit is considering 34 new miles of light rail to reach the Eastside's Overlake area, Federal Way, and Lynnwood. The price tag? $15 billion. What do you think? Also today, mortgage lenders Fannie May and Freddie Mac are deep financial trouble. A federal bailout could cost 5 trillion dollars. That would double the public debt. What are the implications for the nation and for us in the Northwest? Also falling the value of a human life. The federal government puts a dollar figure on a life to calculate the costs of proposed regulations. According to the feds your life is worth a million dollars less today.

Mukasey Dick Cheney DOJ Office of Professional Responsibility Don Siegelman Don Young Efraim Diveroli EPA Esther Slater McDonald FEC FISA Guantanamo Henry Waxman House Judiciary House Oversight Hunt Oil Iraq Iraq Contractors Iraq Corruption John McCain Justice Department Karl Rove Kurdistan Regional Government Lobbyists Michael Elston Michael Must Read Senate Judicial Committee Surveillance Ted Stevens The Daily Muck Torture U.S. Attorneys Valarie Plame AEY, Inc. Alaska BMW Curt Weldon Cyril Wecht Defense Contractors Author: obaidkarki Keywords: Mukasey Dick Cheney DOJ Office of Professional Responsibility Don Siegelman Young Efraim Diveroli EPA Esther Slater Added: July 10, 2008

Author: krs601 Tags: boxer epa Posted: 08 July 2008 Rating: 0.0 Votes: 0

WBZ's Rod Fritz speaks with Dr. Will Beaucher, an allergy specialist in the Chelmsford/Andover area.

CLICK TO WATCH HEADZUP.TV Mobile Satire For A Mobile Democracy BREAKING NEWS: President Bush is asked about the study which found that for the first time in human history, there will likely be no ice at the North Pole this summer. Read more about this at the The Independent website. FREE DAILY MOBILE DOWNLOADS: Visit www.headzup.tv using your cell phone and download Headzup video clips and share them with others as picture messages. SUBSCRIBE TO THE DAILY HEADZUP and get FREE daily "heads up" by email. DOWNLOAD TODAY'S HEADZUP and share them with your family and friends. YOUTUBE GALLERY Watch hundreds of the most popular, most recent, and most discussed Headzup clips on YouTube. copyright, 2008 - Headzup Entertainment

President Bush is asked about the study which found that for the first time in human history, there will likely be no ice at the North Pole this summer. Read more about it here-- http://www.independent.co.uk/environment/climate-change/exclusive-no-ice-at-the-north-pole-855406.html Download daily Catch and Release Comedy™ political cartoons to your mobile phone or iPod at http://www.headzup.tv Author: headzup Keywords: no ice north pole summer melt epa santa polar bear george bush warm political cartoon satire cell mms messaging parody Added: July 2, 2008

Author: TitanGreens Added: Tue, 01 Jul 2008 08:34:20 -0800 Duration: 141We promise to deliver no computer viruses, just fresh & funny eco-news. Democrats search for organic fanny packs, Mt. Everest sheds some tall trash and President Bush puts the EPA on his spam filter. Do not delete these greens! Get more Webby ...

Many sites with chlorinated organic contamination in groundwater have gone through extensive remedial evaluations and actions. After years of operating high energy processes, their effectiveness has begun to diminish without remedial objectives being met. Other effective remedial alternatives can be applied; however, there are difficulties transitioning these sites from these high energy systems to other low energy remedial alternatives and eventually to Monitored Natural Attenuation (MNA). This training on the ITRC Technical and Regulatory Guidance for Enhanced Attenuation: Chlorinated Organics (EACO-1, 2008) describes the transition (the bridge) between aggressive remedial actions and MNA and vise versa. Enhanced attenuation (EA) is the application of technologies that minimize energy input and are sustainable in order to reduce contaminant loading and/or increase the attenuation capacity of a contaminated plume to progress sites towards established remedial objectives. Contaminant loading and attenuation capacity are fundamental to sound decisions for remediation of groundwater contamination. This training explains how a decision framework which, when followed, allows for a smooth transition between more aggressive remedial technologies to sustainable remedial alternatives and eventually to Monitored Natural Attenuation. This training will demonstrate how this decision framework allows regulators and practitioners to integrate Enhanced Attenuation into the remedial decision process. As our experience and knowledge grows around the implementation of MNA, the EA process will be considered an important management tool for optimizing site remedies and moving sites to final completion. This approach is consistent with the current regulatory environment and can be accommodated within a broad range of regulatory programs such as CERCLA and State dry cleaner regulations. This new framework and decision process will accelerate the environmental clean-up progress on a national scale and reduce overall costs, while still providing protection to human health and the environment. For reference during the training class, participants should download and print a copy of the decision flow chart, Figure 2-1 on page 10 of the ITRC Technical and Regulatory Guidance for Enhanced Attenuation: Chlorinated Organics (EACO-1, 2008) and available as a 1-page PDF at http://www.cluin.org/conf/itrc/eaco/ITRC-EACO-DecisionFlowchart.pdf. To view the slides associated with this audio, please visit http://www.clu-in.org/conf/itrc/eaco_062608/

Many sites with chlorinated organic contamination in groundwater have gone through extensive remedial evaluations and actions. After years of operating high energy processes, their effectiveness has begun to diminish without remedial objectives being met. Other effective remedial alternatives can be applied; however, there are difficulties transitioning these sites from these high energy systems to other low energy remedial alternatives and eventually to Monitored Natural Attenuation (MNA). This training on the ITRC Technical and Regulatory Guidance for Enhanced Attenuation: Chlorinated Organics (EACO-1, 2008) describes the transition (the bridge) between aggressive remedial actions and MNA and vise versa. Enhanced attenuation (EA) is the application of technologies that minimize energy input and are sustainable in order to reduce contaminant loading and/or increase the attenuation capacity of a contaminated plume to progress sites towards established remedial objectives. Contaminant loading and attenuation capacity are fundamental to sound decisions for remediation of groundwater contamination. This training explains how a decision framework which, when followed, allows for a smooth transition between more aggressive remedial technologies to sustainable remedial alternatives and eventually to Monitored Natural Attenuation. This training will demonstrate how this decision framework allows regulators and practitioners to integrate Enhanced Attenuation into the remedial decision process. As our experience and knowledge grows around the implementation of MNA, the EA process will be considered an important management tool for optimizing site remedies and moving sites to final completion. This approach is consistent with the current regulatory environment and can be accommodated within a broad range of regulatory programs such as CERCLA and State dry cleaner regulations. This new framework and decision process will accelerate the environmental clean-up progress on a national scale and reduce overall costs, while still providing protection to human health and the environment. For reference during the training class, participants should download and print a copy of the decision flow chart, Figure 2-1 on page 10 of the ITRC Technical and Regulatory Guidance for Enhanced Attenuation: Chlorinated Organics (EACO-1, 2008) and available as a 1-page PDF at http://www.cluin.org/conf/itrc/eaco/ITRC-EACO-DecisionFlowchart.pdf. To view the slides associated with this audio, please visit http://www.clu-in.org/conf/itrc/eaco_062608/

Barack Obama makes a few moves that has Dan wondering if he isn't a newer version of the same old political song-and-dance. Also: The benefits of watching the governmental sausage-making machine.

Do you manage a Superfund landfill site? Is it producing methane gas? Have you wondered how to evaluate and responsibly manage the landfill methane gas? During this training we will discuss resources available to project managers to assess methane productivity at Superfund landfills as well as potential ways to use it as a source of energy or flare it, thereby reducing greenhouse gas emissions. EPA has a wealth of knowledge and experience with landfill gas that may have applicability to Superfund sites. This training will provide a brief overview of the tools available to evaluate, use and flare landfill methane gas and how they may apply to Superfund sites. Keep in mind that Superfund landfills are typically older, closed sites where codisposal of hazardous and municipal waste has occurred. The emissions will be different from a typical municipal landfill. Because of the age and types of waste, the volume of gas is likely less and concentration of hazardous air pollutants is likely higher. Therefore, before proceeding with exploring economics of energy recovery, the amount and characteristics of the landfill gas need to be evaluated. We will discuss how to conduct an evaluation using EPA's Guidance for Evaluating Landfill Gas Emissions From Closed or Abandoned Facilities (EPA-600/R-05/123a). We will also identify options for controlling emissions through either flaring the gas or recovery for its energy potential. To view the slides associated with this audio, please visit http://www.clu-in.org/conf/tio/methane_062408/

Tiny particles of silver designed to kill germs are being put into socks to control odor. But as this ScienCentral News video explains, what happens to that nanosilver later is concerning some scientists.

Primeiro suspense produzido por Êpa Êpa Films. Obs.: Em uma falha de produção, faltaram as últimas letras do título e de uma frase ao longo da trama. Alguns dizem ser um mero erro técnico. Outros afirmam ser partes de um enigmático quebra-cabeça interpretativo proposto pelo brilhante diretor. "Intrigante... Genial" - Time Magazine "Maior suspense desde 'Psicose'" - New York Times Agradecimentos: M. Night Shyamalan Joaquin Phoenix Author: rmig Keywords: epa japones viado is behind Added: June 20, 2008

Put down those pruning shears and pick up some green news! We've got the scoop on eco-friendly summer chores and China's infamous carbon race. And check out the new zero emissions car that could humble the hybrids. Dig in! For more Webby Award-winning eco videos visit TitanGreens.com!

The Superfund Basic Research Program (SBRP), in collaboration with the Environmental Protection Agency (EPA) Technology Innovation Program, presents the 2008 edition of Risk e Learning: "Bioavailability - Metals, Organics, and Use at Hazardous Waste Sites". This series of online seminars focuses on the science and policy issues of incorporating bioavailability into risk and exposure assessments. Largely drawing from the successful SBRP Bioavailability Workshop: "Assessing Bioavailability as a Determinant of Pollutant Exposure" held in Tampa, FL (February 2008), the web seminar series features SBRP-funded and other academic researchers and EPA senior staff. The first seminar "Bioavailability of Metals" was May 28th, the second seminar "Bioavailability of Organic Compounds: Methods and Case Studies" was June 11th, and the third seminar "Use of Bioavailability Information at hazardous Waste Sites" is June 18th. This, the third of the three sessions, will feature Mr. Mike Beringer, U.S. EPA Region VII toxicologist, and Dr. Mark Maddaloni, U.S. EPA Region II toxicologist. Site-specific bioavailability is an important consideration in determining potential threats to human health that are posed by metals-contaminated soils at waste sites. It is important to consider bioavailability because metals may be absorbed to a lesser or greater extent following ingestion of contaminated soils as compared to the fraction absorbed in the studies used to establish toxicity values, such as a reference dose or a cancer slope factor. U.S. EPA's Office of Superfund Remediation and Technology Innovation (OSRTI) has led an effort to develop guidance on evaluating and incorporating bioavailability adjustments into human health risk assessments. The guidance outlines a decision framework for deciding when to collect and incorporate site-specific bioavailability information; recommends a process for documenting the data collection, analysis, and site-specific implementation of a validated method; as well as provides recommended method validation and regulatory acceptance criteria for evaluating alternative methodologies. OSRTI has used these criteria to evaluate two separate methodologies for predicting the relative bioavailability of lead in soil and soil-like materials. OSRTI has determined that both an in vivo swine bioavailability bioassay and an in vitro bioaccessibility assay have sufficiently satisfied these criteria. Thus, they are considered regulatory methodologies appropriate for determining the relative bioavailability of lead for quantitative use in site-specific risk assessments. Mr. Beringer's presentation will summarize the bioavailability guidance document and the basis for OSRTI's decision regarding the two methodologies for predicting lead relative bioavailability. EPA's bioavailability guidance provides a framework for using bioavailability/bioaccessibility data to inform and refine site specific risk assessments. In the case of lead, which benefits from well-characterized studies on the absorption of this metal when bound to soil, the guidance is highly prescriptive. For many other metals that have limited characterization of their absorption profiles, the guidance is more open to interpretation. The bioavailability guidance will be "test driven" so to speak in a situation where the roadmap is less detailed. In this presentation Dr. Maddaloni will go over a case study involving a RCRA Corrective Action site with arsenic-contaminated soil. The session will be moderated by Dr. Fred Pfaender, Professor of Environmental Microbiology, Environmental Sciences and Engineering, and Public Health. To view the slides associated with this audio, please visit http://www.clu-in.org/conf/tio/bioavailability3_061808/

EPA recently released a new Web site where water quality managers and the public can go to view a wide range of state-reported water quality information. This Web site, sometimes referred to as ATTAINS, combines two formerly separate databases: the National Assessment Database and the National Total Maximum Daily Load (TMDL) Tracking System. The National Assessment Database is for water quality assessment information reported by the states under Section 305(b) of the Clean Water Act, while the National TMDL Tracking System is for impaired waters information reported by the states under Section 303(d) of the Clean Water Act. ATTAINS gives the “full story” showing which waters have been assessed, which are impaired, and which are being (or have been) restored. This Web site allows the user to view dynamic, continuously updated tables and charts that summarize state-reported information for the nation as a whole, for individual states and waters, and for the ten EPA Regions. Visit ATTAINS at http://www.epa.gov/waters/ir. To view the slides associated with this audio, please visit http://www.clu-in.org/conf/tio/owattains_061808/

The Superfund Basic Research Program (SBRP), in collaboration with the Environmental Protection Agency (EPA) Technology Innovation Program, presents the 2008 edition of Risk e Learning: "Bioavailability - Metals, Organics, and Use at Hazardous Waste Sites". This series of online seminars focuses on the science and policy issues of incorporating bioavailability into risk and exposure assessments. Largely drawing from the successful SBRP Bioavailability Workshop: "Assessing Bioavailability as a Determinant of Pollutant Exposure" held in Tampa, FL (February 2008), the web seminar series features SBRP-funded and other academic researchers and EPA senior staff. The first seminar "Bioavailability of Metals" was May 28th, the second seminar "Bioavailability of Organic Compounds: Methods and Case Studies" was June 11th, and the third seminar "Use of Bioavailability Information at hazardous Waste Sites" is June 18th. This, the third of the three sessions, will feature Mr. Mike Beringer, U.S. EPA Region VII toxicologist, and Dr. Mark Maddaloni, U.S. EPA Region II toxicologist. Site-specific bioavailability is an important consideration in determining potential threats to human health that are posed by metals-contaminated soils at waste sites. It is important to consider bioavailability because metals may be absorbed to a lesser or greater extent following ingestion of contaminated soils as compared to the fraction absorbed in the studies used to establish toxicity values, such as a reference dose or a cancer slope factor. U.S. EPA's Office of Superfund Remediation and Technology Innovation (OSRTI) has led an effort to develop guidance on evaluating and incorporating bioavailability adjustments into human health risk assessments. The guidance outlines a decision framework for deciding when to collect and incorporate site-specific bioavailability information; recommends a process for documenting the data collection, analysis, and site-specific implementation of a validated method; as well as provides recommended method validation and regulatory acceptance criteria for evaluating alternative methodologies. OSRTI has used these criteria to evaluate two separate methodologies for predicting the relative bioavailability of lead in soil and soil-like materials. OSRTI has determined that both an in vivo swine bioavailability bioassay and an in vitro bioaccessibility assay have sufficiently satisfied these criteria. Thus, they are considered regulatory methodologies appropriate for determining the relative bioavailability of lead for quantitative use in site-specific risk assessments. Mr. Beringer's presentation will summarize the bioavailability guidance document and the basis for OSRTI's decision regarding the two methodologies for predicting lead relative bioavailability. EPA's bioavailability guidance provides a framework for using bioavailability/bioaccessibility data to inform and refine site specific risk assessments. In the case of lead, which benefits from well-characterized studies on the absorption of this metal when bound to soil, the guidance is highly prescriptive. For many other metals that have limited characterization of their absorption profiles, the guidance is more open to interpretation. The bioavailability guidance will be "test driven" so to speak in a situation where the roadmap is less detailed. In this presentation Dr. Maddaloni will go over a case study involving a RCRA Corrective Action site with arsenic-contaminated soil. The session will be moderated by Dr. Fred Pfaender, Professor of Environmental Microbiology, Environmental Sciences and Engineering, and Public Health. To view the slides associated with this audio, please visit http://www.clu-in.org/conf/tio/bioavailability3_061808/