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Description: A well sampling survey was conducted to determine the presence of fenamiphos, fenamiphos sulfoxide, and fenamiphos sulfone in ground water. Wells were sampled in areas where use of fenamiphos coincided with areas of previous contamination by other pesticides, This was possible because fenamiphos is a restricted use pesticide so a spatial record of use was available and the CDFA’s Well Inventory Data Base contains spatial locations of historical pesticide detections in well water. Twenty-four wells were sampled in 16 sections in Fresno County, 12 wells were sampled in 8 sections in San Joaquin County and 5 wells were sampled in 3 sections in Kern County. No residues of fenamiphos or its sulfoxide and sulfone metabolites were detected in any of the samples.
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Subject: Pesticides -- Environmental aspects -- California, Groundwater -- Pollution -- California -- Measurement
Group: Environmental Protection Agency
Creator: Troiano, John J. (John James), Turner, Bonnie, Miller, Nancy, California. Environmental Hazards Assessment Program
Language: English
Coverage: Fresno County (Calif.), San Joaquin County (Calif.), Kern County (Calif.)
Format: Government Documents
Description: Levels of pesticides were determined in ambient air collected at three residential locations within the vicinity of Salinas, California. Levels of all positive samples were in the nanogram per cubic meter range. Eight positive samples were collected during the period from midnight until 12:00 noon, coinciding with the time of the day when pesticides were applied to nearby fieids, and wind speeds were lowest. One positive sample was collected from noon until midnight, the time of day coinciding with low pesticide application activity and higher wind speeds. Based on the levels of residues found, there is no indication of a potential health hazard to individuals in the study area (See Risk Assessment Appendix A).
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Subject: Air -- Pollution -- California -- Monterey County -- Measurement, Pesticides -- Environmental aspects -- California -- Monterey County -- Measurement
Group: Environmental Protection Agency
Creator: California Environmental Protection Agency. Environmental Hazards Assessment Program, Sava, R. J., California. Environmental Hazards Assessment Program
Language: English
Coverage: California
Format: Government Documents
Description: The California Department of Food and Agriculture (CDFA) conducted an eradication program for gypsy moth in spring, 1990 which treated two small areas with the insecticide diflubenzuron. CDFA’s Environmental Hazards Assessment Program (EHAP) collected foliage, air, water, and tank mix samples to monitor environmental concentrations of diflubenzuron resulting from these treatments. Both the eradication and monitoring programs were similar to those conducted for the Gypsy Moth program in Los Angeles County in 1987. The objective this year was to monitor applications and compare results with those found in 1987, not to provide a detailed characterization of diflubenzuron degradation.
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Subject: Lymantria dispar -- Control -- Environmental aspects -- California, Pesticides -- Environmental aspects -- California, Environmental monitoring -- California
Group: Environmental Protection Agency
Creator: Carr, Nancy V., California. Division of Pest Management, Environmental Protection, and Worker Safety. Environmental Monitoring and Pest Management Branch., California. Environmental Hazards Assessment Program
Language: English
Coverage: California
Format: Government Documents
Description: In 1989, the California Department of Food and Agriculture undertook a monitoring program to determine if methyl eugenol and DDVP, two chemicals used in the Oriental Fruit Fly trapping program, could be detected in fruit growing near traps placed in trees. The study details findings of chemicals present in fruit samples taken around fruit fly traps.
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Subject: Pesticides -- Environmental aspects -- California -- Measurement, Pesticide residues in food -- California, Fruit-flies -- Control -- Environmental aspects -- California
Group: Environmental Protection Agency
Creator: Carr, N.V., Gallavan, R.E., Trần, Đức., California. Environmental Hazards Assessment Program
Language: English
Coverage: Sacramento County (Calif.)
Format: Government Documents
Description: This study was conducted in San Luis ObisF County, California, at a site approximately 15 miles south of the city of San Luis Obispo. The site consisted of about 20 acres of rolling hills in a canyon and was representative of California live oak woodland. The flight line portion of the study was conducted in open grassland and the canopy work was done in a stand of live oaks approximately l/2 mile away. Weather data including temperature, wind speed and direction , and relative humidity was gathered from two locations. At the first location, a Met 'One weather station was set up on a hill approximately 50 m above the flight line and due north. A Weather Measure system was used at the second location approximately 1 kilometer northwest of the flight line. Spray applications were made between 0600 and 1200 hours on March 5, 1982.
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Subject: Carbaryl, Aerial spraying and dusting in agriculture--California
Group: Environmental Protection Agency
Creator: Weaver, D.J., Johnson, W.C., Oshima. R.J., California. Environmental Hazards Assessment Program
Language: English
Coverage: California
Format: Government Documents
Description: A helicopter spray trial with Sevin XLR (carbaryl) was conducted on a 14 acre area with dense oak, and other scattered trees. Sevin was applied from two altitudes, 180 and 50 feet above the tree tops. Samples were taken to determine mass deposition, particle sizes, and air concentrations of carbaryl; in the foliage canopy, on open ground, and downwind of the spray area. This trial established that significant mass deposition of carbaryl can be obtained at higher elevations, but only by sacrificing effective coverage and droplet size.
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Subject: Carbaryl, Insecticides -- Environmental aspects -- California, Aerial spraying and dusting in agriculture -- Environmental aspects -- California -- Tulare County
Group: Environmental Protection Agency
Creator: Segawa, R.T., California. Environmental Hazards Assessment Program
Language: English
Coverage: Tulare County (Calif.)
Format: Government Documents
Description: Soil properties and Ethylene Dibromide (EDB) concentrations were measured at two locations with histories of EDB applications. The objective was to explain the presence of EDB residues in a well near one location and the lack of residues in a well near the other location. The soil profile was sampled at each location from the surface to ground water, and ground water samples were collected at the profile base. A combination of statistical analyses (stepwise linear regression and discriminant analyses) was applied to soil data to interpret differences within each location.
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Subject: Gasoline -- Anti-knock and anti-knock mixtures -- Environmental aspects -- California, Ethylene dibromide -- Environmental aspects -- California
Group: Environmental Protection Agency
Creator: Duncan, D.W., Oshima, R.J., California. Environmental Hazards Assessment Program
Language: English
Coverage: California
Format: Government Documents
Description: The extent of contamination that occurs during soil sampling was examined for the split-barrel, hollow auger method used by the Environmental Hazards Assessment Program, California Department of Food and Agriculture, and for a manual bucket auger method. The study was conducted at Fresno, California on a sandy soil of the Hanford series. Contamination was measured by applying tracer to the surface of soil, immediately followed by sampling to a 10 foot depth in 6-inch segments. The tracer contained bromide which was not found in background samples. Thus, the presence of bromide in samples below the surface layer indicated contamination of samples. Three 6-inch samples were taken at one time with the split-barrel method whereas single 6-inch samples were obtained with the hand auger.
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Subject: Soils--Sampling, Soil pollution -- California -- Measurement
Group: Environmental Protection Agency
Creator: Troiano, John J. (John James), California. Environmental Hazards Assessment Program
Language: English
Coverage: California
Format: Government Documents
Date: 1987 August
Description: The California Department of Food and Agriculture participated in a cooperative study titled “The Blodgett Forest Environmental Monitoring Project.” This study was designed to answer questions about the environmental fate of 2, 4, 5-T and TCDD in forest and rangelands as well as the possible bioaccumulation of these compound by deer.
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Subject: Tetrachlorodibenzodioxin -- Toxicology -- California -- Blodgett Forest, Deer -- Effect of pesticides on -- California -- Blodgett Forest, Herbicides -- Environmental aspects -- California -- Blodgett Forest -- Measurement
Group: Environmental Protection Agency
Creator: California. Department of Fish and Game, Cheney, H.V., California. Environmental Hazards Assessment Program
Language: English
Coverage: California
Format: Government Documents
Date: 1980, August
Contributor: United States. Forest Service, Blodgett Forest Research Station, California Analytical Laboratories Inc.
Page 1 of 1 (9 Total Results)
