26
Aug
(Beyond Pesticides, August 26, 2024) In July, the U.S. Environmental Protection Agency (EPA) announced it was raising the allowable levels of the highly toxic weed killer atrazine in the nation’s waterways from the 2016 level of 3.4 to 9.7 micrograms per liter (µg/L), which scientists and environmental advocates say is a serious threat to aquatic plants, fish, invertebrates, and amphibians, in addition to people who recreate in waterways or eat food from them. With EPA’s August 7 decision to ban the weed killer Dacthal (or DCPA–dimethyl tetrachloroterephthalate), Beyond Pesticides is rallying public support for the removal of atrazine from the market under the same standards of harm, inability to mitigate hazards, and the availability of alternatives. As Beyond Pesticides points out in its 2022 atrazine comments (2020 and 2016 comments included) to EPA, the agency in November 2021 released the final Biological Evaluation (BE) assessing risks to listed species from labeled uses of atrazine (in the triazine chemical family). The agency made “likely to adversely affect (LAA) determinations” for 1,013 species and 328 critical habitats, which it is now rejecting, while using a “community-equivalent level of concern (CE-LOC)” measure that is filled with uncertainty and lacks any sense of precaution with […]
Posted in Agriculture, Alternatives/Organics, Atrazine, dacthal, Environmental Protection Agency (EPA), Herbicides, Lawns/Landscapes, Syngenta, Take Action, Uncategorized | No Comments »
14
Aug
(Beyond Pesticides, August 14, 2024) Pesticide exposure is linked to negative birth outcomes in a recent study in the American Journal of Epidemiology. This study adds to that body of science, but is novel research since, “Epidemiological studies of pesticide exposures and stillbirth in the United States have not been published in the past two decades, a time period that has seen dramatic changes in pesticide use compared to the 20th century,” the authors state. The study analyzes Arizona pesticide use records and birth certificates from 2006-2020. Researchers correlate mothers living within 500 meters of any pyrethroid, organophosphate (OP), or carbamate insecticide applications during specific windows before and during pregnancy with stillbirth. The authors focus on exposure during the prenatal period, as it is a susceptible time frame in which any contact with pesticides can negatively impact health. Numerous studies report several adverse birth and childhood outcomes with prenatal exposure. To link pesticide exposure and negative birth outcomes, Arizona records that encompass 1,237,750 births, 2,290 stillbirths, and 27 pesticides were analyzed. The authors “evaluate associations of pyrethroids, OPs, and carbamate insecticides with stillbirth by using data from the Arizona Pregnant women’s Environment and Reproductive outcomes Study (Az-PEARS), a project that […]
Posted in Acephate, Arizona, carbamate, Carbaryl, Cyfluthrin, cypermethrin, dacthal, Dimethoate, Malathion, organophosphate, Permethrin, pyrethroids, Reproductive Health, Women's Health | No Comments »
12
Aug
(Beyond Pesticides, August 12, 2024)  When the U.S. Environmental Protection Agency (EPA) issued an emergency ban of the weed killer Dacthal (DCPA) last week, it said that there are no “practicable mitigation measures” to protect against identified hazards—a clear and honest assessment of the limits of pesticide product label changes and use restrictions. Now, the question is whether the same thinking can be applied across the EPA’s pesticide program, addressing the urgent need to protect biodiversity. In the Dacthal proclamation, EPA said it consulted with the U.S. Department of Agriculture (USDA) on “alternatives to this pesticide,” and presumably determined that there were “alternative chemicals” that could be used in chemical-intensive agriculture—while not considering “alternatives to chemicals.” This is the framework that is understood to be EPA’s process that keeps pest management on a pesticide treadmill except in extremely rare cases (this being the second in nearly 40 years). It is also the framework that has led to catastrophic events or existential crises on biodiversity collapse, health threats, and the climate emergency. On biodiversity, the mix of diverse and intricate relationships of organisms in nature that are essential to the sustaining of life, EPA’s pesticide program, the Office of Pesticide Programs, has […]
Posted in Agriculture, Alternatives/Organics, Biodiversity, dacthal, Endangered Species Act (ESA), Environmental Protection Agency (EPA), Take Action, Uncategorized, US Department of Agriculture (USDA), Wildlife/Endangered Sp. | No Comments »
08
Aug
(Beyond Pesticides, August 8, 2024) With the use of its emergency authority—not used in nearly 40 years, the U.S. Environmental Protection Agency (EPA) on August 7 banned a pesticide (the weed killer Dacthal or DCPA—dimethyl tetrachloroterephthalate) under the “imminent hazard” clause of the federal pesticide law. At the same time, the agency is exercising its authority to prohibit the continued use of Dacthal’s existing stocks, a provision that EPA rarely uses. EPA identified serious concerns about fetal hormone disruption and resulting “low birth weight and irreversible and life-long impacts to children [impaired brain development, decreased IQ, and impaired motor skills] exposed in-utero” and finds that there are no “practicable mitigation measures” to protect against these hazards. The last time EPA issued an emergency action like this was in 1979 when the agency acknowledged miscarriages associated with the forestry use of the herbicide 2,4,5-T—one-half of the chemical weed killer Agent Orange, sprayed over people to defoliate the landscape of Vietnam in the war there—with the most potent form of dioxin, TCDD (2,3,7,8-Tetrachlorodibenzo-p-dioxin). While EPA has been congratulated for using its emergency authority, which it is obviously reluctant to use, and health and environmental activists say could be used broadly, the timeline […]
Posted in 2, 4, 5-T, Agriculture, Amvac, dacthal, Endocrine Disruption, Environmental Protection Agency (EPA), Miscarriage, Reproductive Health, Thyroid Disease, Uncategorized, US Department of Agriculture (USDA) | 2 Comments »
20
Aug
(Beyond Pesticides, August 20, 2020) Persistent organic pollutants (POPs), including banned and current-use pesticides are present in snow and ice on top of Arctic glaciers, according to the study, “Atmospheric Deposition of Organochlorine Pesticides and Industrial Compounds to Seasonal Surface Snow at Four Glacier Sites on Svalbard, 2013–2014,” published in Environmental Science & Technology. Past research finds that air contaminated with these environmentally bioaccumulative, toxic chemicals drift toward the poles, becoming entrapped in ice under the accumulating snowfall. As the global climate continues to rise and the climate crisis worsens, studies like this become significant, as glaciers encapsulating these toxic chemicals are melting. Upon melting, some chemicals can volatize back into the atmosphere releasing toxicants into air and aquatic systems, with the ensuing consequences. Although this research demonstrates that specific computer programs can track the trajectory of chemically contaminated air parcels with practical precision, it falls to global leaders to curtail the continued manufacturing of these chemical pollutants. [For related pieces, see Silent Snow: The unimaginable impact of toxic chemical use and DDT in Glacial Melt Puts Alaskan Communities at Risk.] Countless scientists consider Arctic environments to be “pristine,” void of direct chemical inputs from pesticides and other POPs. However, the Arctic has become a sink for […]
Posted in Alternatives/Organics, Chlorpyrifos, Climate Change, contamination, dacthal, DDT, Dieldrin, Disease/Health Effects, hexachlorobenzene (HCB), Pesticide Drift, Water | No Comments »
25
Jun
(Beyond Pesticides, June 25, 2010) Two new studies published in the journal Environmental Science and Technology confirm that the majority of toxic contamination threatening national parks originates from agricultural pesticides and industrial operations. In one study an international group of scientists conducted research from 2003-2005 and detected elevated concentrations of various dangerous pesticides in all eight of the national parks and preserves. The other study collected samples of air, water, snow, sediment, lichens, conifer needles, and fish at remote alpine, subarctic, and arctic sites. Researchers found that these samples contained four current-use pesticides including dacthal (DCPA), chlorpyrifos, endosulfans, and y-hexachlorocyclohexane (HGH) as well as four historic-use pesticides including dieldrin, a-HCH, chlordanes, and hexachlorobenzene (HCB). Pesticide concentrations in snow are highest in Sequoia, Kings Canyon, Rocky Mountain and Glacier National Parks. Concentrations in vegetation are mostly dominated by endosulfan and dacthal, and are highest in Yosemite, Kings Canyon, Glacier, and Great Sand Dunes National Park and Preserve. Fish samples also show elevated concentrations of dieldrin and DDT (one of the first pesticides to be banned in 1972 because of Rachel Carson’s Silent Spring). Cold temperatures in alpine or arctic ecosystems tend to concentrate pesticides, which can also bioaccumulate in the local […]
Posted in Chlordane, Chlorpyrifos, dacthal, DDT, Dieldrin, Endosulfan, hexachlorobenzene (HCB), Wildlife/Endangered Sp. | No Comments »
10
Sep
(Beyond Pesticides, September 10, 2008) Following the report released by the National Marine Fisheries Service that identified 37 pesticides that pose risks to salmon and steelhead, Oregon state officials are moving ahead to set new safety benchmarks for seven pesticides of priority concern. A team from the Oregon Water Quality Pesticide Management Program identified seven priority hazardous pesticides: azinphos-methyl, chlorpyrifos, dacthal, diazinon, endosulfan, simazine and ethoprop, based on water-quality monitoring in five Oregon watersheds, including the Pudding River near Salem, as well as the Clackamas, Yamhill, Hood and Walla Walla watersheds. Three pesticides, azinphos-methyl, diazinon and chlorpyrifos have been detected at concentrations that exceed federal aquatic criteria in the Clackamas River Basin (See report here). Chlorpyrifos was detected at maximum levels more than twice the federal standard. The National Marine Fisheries Service report on the ecological damage associated with pesticide use reveals “overwhelming evidence” to suggest that 37 pesticides, including these seven, increase the chance of extinction for protected salmon and steelhead. The state is now turning to its own team of experts to set stringent benchmarks based on existing research on these chemicals of concern. Generally the U.S. Environmental Protection Agency (EPA) is charged with developing water quality standards […]
Posted in 2,4-D, Chlorpyrifos, dacthal, Endosulfan, Ethoprop, Glyphosate, Oregon, Pesticide Regulation, simazine, Water, Wildlife/Endangered Sp. | No Comments »
