(Beyond Pesticides, December 18, 2015) One of the most likely causes for the population decline of smallmouth bass in the Susquehanna River are endocrine-disrupting compounds and herbicides, concludes a multi-agency, multi-year study of one of the most complex river systems in Pennsylvania. The Pennsylvania Department of Environmental Protection (DEP) and the Pennsylvania Fish and Boat Commission (PFBC), along with nearly 50 participants and six partner agencies, released findings on Monday that narrow the likely causes from an initial field of 14 candidates to two. PFBC also found that pathogens and parasites are probable contributing factors. Following a smallmouth bass (SMB) population crash in 2005, and additional observed maladies, such as tumors and lesions on SMB, the team used ground-breaking monitoring strategies to collect more than 30,000 water quality records annually, along with review of existing research to isolate the possible causes keeping young-of-the-year (YOY) SMB from growing to adulthood. The study provides evidence to what Beyond Pesticides suspected back in May, when PFBC confirmed that a rare malignant tumor was found for the first time on a SMB caught by an angler back in the summer of 2014. Though the findings at the time did not point to a specific […]

(Beyond Pesticides, October 16, 2015) According to a new study, living in crop-dense regions is linked to increased leukemia and central nervous system cancers in children. Although there is a litany of scientific literature that highlights the link between pesticide exposure and childhood illness, this study is one of few that examines the relationship between residential exposures to agricultural pesticides via crop density and adverse health outcomes, and may serve as a basis for further investigation into childhood cancer rates in areas where agricultural pesticides are highly used. The study, titled Agricultural crop density and the risk of childhood cancer in the Midwestern United States: an ecologic study,  was published in the journal Environmental Health. Using crop density as a surrogate for residential exposure to agricultural pesticides, the study linked county-level agricultural census data and cancer incidence data for children between the ages 0 to 4 in six Midwestern states and found evidence of an association between childhood cancer incidence and the production of crops such as dry beans, oats, and sugar beets. Researchers found statistically significant exposure-response relationships for dry beans and total leukemias and acute lymphoid leukemias, oats and acute myeloid leukemias, and sugar beets and total leukemias. […]

(Beyond Pesticides, July 6, 2015) With the release of its  Tier 1 screening results  for the first 52 pesticide chemicals (active and inert ingredients) evaluated under  the Endocrine Disruptor Screening Program (EDSP), the U.S. Environmental Protection Agency (EPA) is at odds with a large body of scientific evidence worldwide that identifies many of these chemicals, most notably the herbicides  2,4-D  and  atrazine,  as interacting with the endocrine system or acting as endocrine disruptors. Independent scientific data has shown these chemicals to interfere with the hormone system. EPA’s EDSP is a multi-step process used to ensure that exposure to chemicals does not result in adverse human health and environmental effects that canoccur from the disruption of hormones. The two-tiered screening and testing system requires that EPA identify which chemicals are able to interact with the endocrine system, specifically with three hormonal pathways — estrogen, androgen, and thyroid — in Tier 1. Tier 2 is designed to go one step further, requiring EPA to determine endocrine effects across taxa (e.g. mammals, birds, amphibians, and invertebrates) as well as potential effects on non-endocrine systems (e.g. neurological, immunological, hepatic, and renal).  According to EPA, Tier 1 screening data are the best way to determine […]

(Beyond Pesticides, June 25, 2015) The U.S Environmental Protection Agency (EPA) announced Tuesday that it will analyze the effects of two of the most commonly used pesticides in the United States, glyphosate and atrazine, along with atrazine chemical-cousins propazine and simazine, for their impacts on 1,500 endangered plants and animals. The announcement marks an agreement between EPA and Center for Biological Diversity (CBD) on a proposed settlement amending a 2010 court order that  established a schedule to complete effects determinations for 75 chemicals on 11 species in the San Francisco (SF) Bay Area. According to EPA, 59 of the 75 pesticides have been evaluated and subject to  effects determinations, however for the remaining 16 pesticides, EPA and CBD agreed that it would be more efficient and environmentally significant to complete nationwide effects determinations, rather than limit their focus to the SF bay area listed species. The agency has committed to completing the assessments by June 2020. The initial lawsuit was filed by CBD in May 2007 against EPA for violating the Endangered Species Act by registering and allowing the use of scores of toxic pesticides in habitats for 11 San Francisco Bay Area endangered species without determining whether the chemicals […]

(Beyond Pesticides, June 05, 2015) A new federal bill was introduced Wednesday that, if passed, would undermine the U.S. Environmental Protection Agency’s (EPA) authority to issue Clean Water Act permits for pesticide spraying over waterways. Titled the Sensible Environmental Protection Act  and introduced by Senators Mike Crapo (R-Idaho) and Claire McCaskill (D-Mo), this new bill would reverse a 2009 federal court decision in National Cotton Council v. EPA that directed EPA to require permits from applicators who spray over “navigable waters,” as outlined in the Clean Water Act (CWA). The bill’s authors claim that the need for water permits is duplicative, given that pesticide applicators also comply with the Federal Insecticide, Fungicide and Rodenticide Act (FIFRA), the law that requires applicators to follow instructions on pesticide labels. “This issue is a prime example of an unnecessary, duplicative federal regulation impacting a variety of stakeholders in Idaho and across the nation that must be fixed,” Senator Crapo said in a statement.  “Our rural communities are already under a substantial amount of financial strain and regulatory pressure and are looking to Congress for much-needed relief.” Contrary to  Senator  Crapo’s claims, the  CWA permit serves as a valuable tool that lets authorities know […]

(Beyond Pesticides, May 12, 2015) Last week Kaua’i County Councilmember Gary Hooser returned from agrichemical giant Syngenta’s shareholder meeting in Basel, Switzerland, where he addressed the company and its stakeholders on  the corporation’s lawsuit against the  small Hawaiian island of Kaua’i. The Councilmember indicates that, although the company is unlikely to meet his request to drop its lawsuit against Ordinance 960, which generally creates buffer zones prohibiting pesticide use around schools, hospitals, and parks, the trip overall was a success. “Our main purpose was one of education and information, to tell our story in the home city of Syngenta, and we were greeted with open arms and really managed to get the word out,” Mr. Hooser said to The Garden Isle on Monday. VIDEO: See Councilmember Hooser’s speech to Syngenta: Part 1 | Part 2 (Note: Credit and thanks to Kauai activist Fern Rosenstiel for filming this video despite attempts by Syngenta to suppress her ability to do so.) In a related matter, it  was announced earlier this week that  a federal court awarded over $500,000 to 15 Kaua’i residents who launched a  lawsuit (separate from the one above) against another agrichemical company on the island, DuPont Pioneer. Residents won […]

(Beyond Pesticides, May 7, 2015) The Pennsylvania Fish and Boat Commission (PFBC) has confirmed that a rare malignant tumor was found on a smallmouth bass caught in the Susquehanna River by an angler late last summer. The finding was confirmed by two independent laboratory tests, including the U.S. Fish and Wildlife Service (FWS) and the Aquatic Animal Health Laboratory at Michigan State University.  Although it only represents one individual fish from the overall population, it provides additional evidence —which includes the prevalence of intersex fish discovered last summer”” that the health of the fish community residing in the river is being compromised, according to PFBC executive director John Arway. Though the findings do not point to a specific cause for the cancer found on the smallmouth bass (SMB), agricultural pesticides, particularly endocrine disrupting chemicals, that have been found in the watershed, likely play a part in the rampant disease issues in SMB in the Susquehanna River. “As we continue to study the river, we find young-of-year and now adult bass with sores, lesions and more recently a cancerous tumor, all of which continue to negatively impact population levels and recreational fishing,” Mr. Arway said. “The weight-of-evidence continues to build a […]

(Beyond Pesticides, April 16, 2015) According to a new study, regulatory limits for insecticides are exceeded in over half of contaminated water samples collected from around the world. The study was based on a review of more than 800 studies conducted in 73 countries over the past five decades and is the first to evaluate the exposure of surface waters to particularly toxic agricultural insecticides on a global scale. Based on these results, the researchers ultimately conclude that “fundamental revisions of current regulatory procedures and pesticide application practices are needed to reverse the global environmental impacts of agro-chemical based high-intensity agriculture.” The analysis, published in the Proceedings of the National Academy of Sciences and titled “Agricultural insecticides threaten surface waters at the global scale,” was led by Sebastian Stehle, Ph.D., and Ralf Schulz, Ph.D, at the Institute for Environmental Sciences at University Koblenz-Landau in Germany. The researchers looked at 28 insecticides, the majority of which are currently approved in the United States and the European Union, represent all major insecticide classes, and are important for global agriculture in terms of annual application rates. While they found that just 2.6 percent of the 2,500 aquatic sites contained measurable levels of insecticides, […]

(Beyond Pesticides, March 16, 2015) Last week, a judge in Duesseldorf Regional Court ruled that the German branch of Friends of the Earth (BUND) has a right to speak out against chemical company giant Bayer CropScience’s neonicotinoid pesticide, thiacloprid, regarding its potential danger to bees. The court considered the allegations put forth by BUND to be a form of free speech, a protected right. Neonicotinoids, a class of insecticides, affect the central nervous system of insects, resulting in paralysis and eventual death. These pesticides have consistently been implicated as a key issue in pollinator declines, not only through immediate bee deaths, but also through sub-lethal exposure causing changes in bee reproduction, navigation and foraging. The science has become increasingly clear that pesticides, either working individually or synergistically, play a critical role in the ongoing decline of honey bees. Pesticide exposure can impair both detoxification mechanisms and immune responses, rendering bees more susceptible to viruses, parasites and other diseases, leading to devastating bee losses. Thiacloprid is one of the seven most commonly used neonicotinoids. It is used to control sucking and biting insects in cotton, rice, vegetables, pome fruit, sugar beet, potatoes and ornamentals. Low doses of neonicotinoids are considered highly […]

(Beyond Pesticides, February 17, 2015) The Center for Biological Diversity filed a lawsuit in federal court in California February 12 against the U.S. Fish and Wildlife Service (FWS) for failing to ensure that three widely used pesticides ””atrazine, 2,4-D and alachlor”” do not jeopardize the survival of two Bay Area endangered species, the delta smelt and Alameda whipsnake. FWS has yet to act on a request from the U.S. Environmental Protection Agency (EPA) to determine whether measures are needed to protect the delta smelt and Alameda whipsnake from exposure to these pesticides. “These pesticides are known to harm wildlife even in miniscule amounts, so it’s long past time that we start taking commonsense steps to protect endangered species, our water and ourselves,” said Brett Hartl, endangered species policy director at the Center. “Putting off any analysis of the harms caused by pesticides for six years is simply unacceptable, and has set back the recovery of these two species substantially.” Scientific research has shown that atrazine can harm the development of amphibians at exposures of just a few parts per billion, is toxic to fish, reptiles, mammals and birds, and may elevate risks of birth defects in people. Up to 80 […]

(Beyond Pesticides, October 30, 2014) After concerns have been raised about the poor oversight of aerial herbicide spraying on Oregon forests, and the subsequent pesticide contamination of residents living nearby, policy makers are working to introduce legislation to better protect local residents from pesticide and environmental contamination. An investigation, which began in 2013 into allegations of improper pesticide spraying on timberland near residential areas in Southern Oregon, has since confirmed that residents of the small towns were unwillingly sprayed with pesticides. The investigation was launched after residents filed complaints after they experienced rashes, headaches, asthma, and stomach cramps directly after pesticide applications. Earlier this year, the investigation led by the Oregon Department of Agriculture (ODA) indicated multiple violations by the pesticide operator and applicator responsible for the spraying, as well as evidence of the presence of pesticides on properties in Cedar Valley, near Gold Beach, Oregon. The aerial applicator, the investigation uncovered, allowed pesticide deposition on properties other than the intended application site, applied one product at a rate above the maximum allowed by the label instructions, and provided multiple false records that misled ODA about the actual products used. Now, in light of several state regulatory lapses that include […]

(Beyond Pesticides, September 12, 2014) A new U.S. Geological Survey (USGS) report finds that levels of pesticides continue to be a concern for aquatic life in many of the Nation’s rivers and streams in agricultural and urban areas. The study, which documents pesticide levels in U.S. waterways for two decades (1992-2011), finds pesticides and their breakdown products in U.S. streams more than 90 percent of the time. Known pesticide water contaminants, such as atrazine, metolachlor, and simazine, continue to be detected in streams more than 50 percent of the time, with fipronil being the pesticide most frequently found at levels of potential concern for aquatic organisms in urban streams. According to the USGS report, “An Overview Comparing Results from Two Decades of Monitoring for Pesticides in the Nation’s Streams and Rivers, 1992—2001 and 2002—2011,” featured in the journal, Environmental Science and Technology and part of the agency’s ongoing National Water-Quality Assessment Program, the proportion of streams with one or more pesticides that exceed an aquatic-life benchmark (or guideline) is similar between the two decades for streams and rivers draining agricultural and mixed-land use areas, but much greater during the 2002-2011 for streams draining urban areas. During both decades, one or […]

(Beyond Pesticides, September 5, 2014) A study published in a scientific journal finds that the U.S. Environmental Protection Agency (EPA) favors the chemical  industry when making determinations on pesticide safety. Under the Federal Insecticide Fungicide and Rodenticide Act (FIFRA), EPA conducts  risk assessments to determine whether a new or existing chemical is eligible for registration or reregistration and therefore able to enter or remain on the market. The study’s conclusions raise serious concerns for both environmental and human health protection because of EPA’s practice of inviting bias and underestimating potential harm. The study, which will be in the October issue of BioScience, highlights the case of atrazine, an herbicide that has been linked to cancer, endocrine disruption, birth defects, and reproductive effects. In their study, Michelle Boone, Ph.D., of Miami University, and her colleagues find that most pesticide toxicity tests used in risk assessments are conducted by pesticide manufacturers themselves. The authors contend that this can result in conflicts of interest. Additionally, strict methodological criteria, such as the types of containers in which exposed specimens are raised, often mean that potentially relevant studies are barred from EPA’s assessment process. The agency reassessed atrazine  based on a sole, manufacturer-funded study, finding […]

(Beyond Pesticides, August 4, 2014) The Clean Water Act (CWA) provides critical safeguards for our nation’s waterways, with the goal of fishable and swimmable waters for all residents of the United States. Last Thursday, the House of Representatives voted to strip away an important part of these protections concerning pesticides applied directly to U.S. waters. The Reducing Regulatory Burdens Act of 2013 (HR 935) would reverse a 2009 ruling in National Cotton Council v. EPA that requires CWA permits for pesticide users who spray over waterways. After failing in a vote under a suspension of the rules last Monday, the House took the bill back up and passed it 267-161. “This is a good bill that reduces burdensome regulations without rolling back any environmental safeguards,” said U.S. Representative Bob Gibbs (R-OH), the bill’s sponsor, to The Hill. Unfortunately, Rep. Gibb’s statement couldn’t be farther from the truth. Under the deceptive title of “Reducing Regulatory Burdens,” this bill would instead eliminate critical CWA protections. “This legislation will undermine one of our nation’s most successful environmental laws, the Clean Water Act, in limiting the potential contamination of our nation’s waters by pesticides. All this would do is make it harder to locate […]

(Beyond Pesticides, July 3, 2014) It was predictable that genetically engineered (GE) cotton sprayed with the weedkiller glyphosate (Roundup) would create resistant superweeds. Now that it has, Texas GE cotton growers recently requested an emergency use of a chemical cousin to atrazine, the herbicide that is demasculinizing frogs by disrupting the endocrine system— on 3 million acres of cotton fields where the weeds have become resistant to the chemical of choice —glyphosate. Stop the GE Pesticide Treadmill! Use Beyond Pesticides’ sample comments for guidance. Help stop the GE treadmill and the use of hazardous pesticides. Join Beyond Pesticides in fighting this predictable “emergency” use because it exemplifies EPA’s practice of allowing increasing dependency on highly toxic pesticides in agricultural systems that are predictably unsustainable, harmful to people and the environment, and for which there are safe alternatives.  This situation is the same toxic treadmill and thinking that is ushering in new 2,4-D-tolerant corn to replace Roundup Ready corn. Emergency exemptions and the use of increasingly toxic herbicides must not be the norm for communities and our environment. Can you help us stop EPA from propping up the failed GE agricultural system?  Submit your comment by midnight July 3. Government does […]

(Beyond Pesticides,  June 27, 2014) The Environmental Protection Agency (EPA) is considering a  request  by Texas regulators to allow the use of a controversial herbicide, propazine, to battle Palmer amaranth, a glyphosate-resistant “super weed” that has been plaguing growers of genetically engineered (GE) herbicide-tolerant cotton in the state. Propazine, an active ingredient in Milo-Pro, would be sprayed on up to 3 million acres, which amounts to approximately half of the state’s estimated crop acreage for this season. As currently proposed, the maximum amount of product to be applied would be 70,314 gallons. The Texas Department of Agriculture, on behalf of  chemical-intensive GE cotton growers,  asked EPA last month for an exemption to permit growers to spray fields with the herbicide this summer in order to control this highly invasive plant, also known as pigweed. Pigweed can grow up to 3 inches a day and is one of many plant species that has developed a resistance to  glyphosate, a systemic herbicide found in Roundup that has become one of the most widely used pesticides on the market.  Public comments are due by July 3, 2014. The occurrence of super weeds coincides strongly with the use of toxic herbicides on genetically engineered […]

(Beyond Pesticides, May 28, 2014) A statewide pilot pesticide sampling project has found over 20 different types of pesticides in Hawaiian waterways, some of which are no longer registered for use in Hawaii. State officials believe the pesticides, many detected in urban areas, are from residential and golf course applications. These preliminary findings help highlight the need for local oversight of pesticide use, currently a controversial issue in the state. Conducted in partnership with the Hawaiian Department of Agriculture, the U.S. Geological Survey (USGS) and the Hawaiian Department of Health, the survey-study finds herbicides like glyphosate (Roundup) and atrazine, as well as a fungicide that is no longer registered for use in the state, contaminating the state’s waterways. The study measured pesticides in surface waters and in sediment at multiple locations in Hawaii. 25 herbicides, 11 insecticides and 6 fungicides were detected, with atrazine the most commonly found. This pilot survey responds to growing community concerns about the impacts of pesticides on local communities and ecosystems, and provides preliminary information on pesticide residues in state waterways. Recently, Kauai County passed an ordinance —Ordinance 960—  that requires public disclosure of pesticides used and the location of genetically engineered (GE) crops, as […]

(Beyond Pesticides, January 17, 2014) A new economic study, Would banning atrazine benefit farmers?, published in the International Journal of Occupational and Environmental Health demonstrates that eliminating the herbicide atrazine, widely used on U.S. corn crops, will economically benefit corn growers. The study examines the research produced by the Atrazine Benefits Team (ABT), a group assembled by atrazine manufacturer Syngenta, revealing that the industry-funded studies significantly overestimate the benefits of atrazine without considering the value of nonchemical weed management techniques. Research, led by Frank Ackerman, PhD., professor at Tufts University in the Global Development and Environment Institute, questions the economic viability of atrazine in Syngenta’s study. Researchers critically review five papers released by ABT in 2011, which claim that the withdrawal of atrazine would diminish corn yields by 4.4%, increasing corn prices by 8%. Using these assumptions, Dr. Ackerman and his team calculated that corn growers’ revenue would actually increase by 3.2%, providing a total of $1.7 billion to farmers and the U.S. economy with minimal price changes for consumers. In short, because of price elasticity, eliminating atrazine would improve farmer revenues. According to the study, “The result [of an atrazine ban] would be an increase in corn growers’ revenues, […]

Beyond Pesticides, December 23, 2013) The Environmental Protection Agency (EPA) and the National Oceanic and Atmospheric Administration (NOAA)  in a  Federal Register notice  has found that the state of Oregon’s program to reduce nonpoint coastal pollution is inadequate. Both federal agencies state that Oregon’s program does not adequately protect streams that provide habitat for Coho Salmon, an endangered species, and drinking water from herbicides that are aerially sprayed by lumber companies. This notice comes just after a recent report was released by Beyond Toxics on the health and environmental problems caused by aerial herbicide application on timber forests near Triangle Lake. EPA and NOAA’s proposed disapproval action of Oregon’s Coastal Nonpoint Program finds that the state has failed to adequately protect certain waterways within the state. Under the Coastal Zone Act Reauthorization Amendments (CZARA) of 1990, states are required to submit an approvable Costal Nonpoint Pollution Control Program to NOAA and EPA. In 1998, federal agencies approved the Oregon Nonpoint Program with conditions that the state meet certain water pollution issues. This proposed disapproval action is part of a settlement of a lawsuit brought by the Northwest Environmental Advocates in 2009, which charged Oregon has failed to meet the conditions […]

(Beyond Pesticides, December 13, 2013) A recent survey conducted by researchers at the U.S. Geologic Survey (USGS) and the U.S. Environmental Protection Agency (EPA) found traces of 18 unregulated chemicals in drinking water from more than one third of U.S. water utilities. Of the 21 total chemicals found, researchers discovered among them 11 perfluorinated chemicals, an herbicide, two solvents, caffeine, an antibacterial chemical, a metal and an antidepressant. Preliminary findings were presented by scientists at an annual toxicology conference held by the Society of Environmental Toxicology and Chemistry last month in Nashville. Federal researchers took samples from 25 U.S. utilities from around the nation who voluntarily participated in the study, providing samples of treated and untreated water. Disturbingly, 18 of the chemicals found are not regulated under the Safe Water Drinking Act, meaning utility companies are not required to treat, limit, or even monitor for their presence. “The good news is the concentrations are generally pretty low,” said USGS research hydrologist Dana Kolpin, PhD. to Environmental Health News. “But,” he continued “there’s still the unknown. Are there long-term consequences of low-level exposure to these chemicals?” While there is a paucity of data on some of the contaminants, regulated chemicals such […]

(Beyond Pesticides, October 29, 2013) Early-life exposure to the herbicide atrazine makes frogs more susceptible to death from chytrid (Batrachochytrium dendrobatidis), a fungal disease implicated in amphibian declines across the globe. The research, Early-life exposure to a herbicide has enduring effects on pathogen-induced mortality, published in the Proceedings of the Royal Society B and led by University of South Florida (USF) biologist Jason Rohr, Ph.D, provides critical information for scientists hoping to stem the global demise of amphibian populations. “Understanding how stressors cause enduring health effects is important because these stressors might then be avoided or mitigated during formative developmental stages to prevent lasting increases in disease susceptibility,” Dr. Rohr explains. Researchers exposed tadpoles to atrazine at levels found in the environment for a period of  six days during the animal’s development, in combination with exposure to chytrid fungus (linked to worldwide amphibian decline), resulted in increased mortality 46 days later. According to the study, “[E]arly-life exposure to atrazine altered growth and development, which resulted in exposure to chytrid at more susceptible developmental stages and sizes, and reduced tolerance of infection, elevating mortality risk at an equivalent fungal burden to frogs unexposed to atrazine. Moreover, there was no evidence of […]

(Beyond Pesticides, September 27, 2013) In an effort to ensure that the essential independent scientific research on pesticides is not thwarted by the chemical industry, Beyond Pesticides has launched The Fund for Independent Science. This fund, catalyzed by the recent announcement that Tyrone Hayes, Ph.D. has lost university funding for his laboratory and research, is set up and run by Beyond Pesticides. Our goal is to raise $150,000 to enable Dr. Hayes to keep his lab running for a year, and ultimately support the other work of independent researchers. Make a pledge today. There are few scientific research projects more important to protecting life and preventing its long-term demise than those conducted by Tyrone Hayes, Ph.D. And now this work is under threat. Dr. Hayes, a Harvard educated biologist and professor of Integrative Biology at the University of California, Berkeley, whose research finds that the herbicide atrazine feminizes male frogs, is one of the leading scientists critical of the pesticide industry and regulatory process.  This critical research is threatened while, as Dr. Hayes’ points out, amphibian species are in decline and they are disappearing. Read Protecting Life — From Research to Regulation: Disappearance of frogs, human health effects linked to […]

(Beyond Pesticides, July 19, 2013) A recent report by the U.S. Geological Survey (USGS) examines the health of the nation’s streams over 20 years and finds that streams nationwide are severely degraded by humans, exhibiting elevated levels of pesticides and nutrients as well as streamflow modifications. Overall, the report finds that 83 percent of streams in agricultural and urban areas contain at least one aquatic community that was altered, or in other words, negatively affected. With waterways in the U.S. increasingly imperiled from various agents including agricultural and industrial discharges, nutrient loading (nitrogen and phosphorus), and biological agents such as pathogens, assessments such as these provide further impetus to protect water quality for both human health and the environment. The report, entitled “Quality of Our Nation’s Waters: Ecological Health in the Nation’s Streams, 1993-2005,” describes the health of three biological communities ””algae, macroinvertebrates, and fish”” to  measure the overall quality of streams. A stream’s ability to support these community structures can directly measure the health of waterways. The report assesses streamflow modifications and measures over 100 chemical constituents in water and streambed sediments. The report is a comprehensive assessment of the variety of factors that contribute to stream health declines, […]