Audit report on the Crawford County Area Solid Waste Agency Commission for the year ended June 30, 2007

Audit report on the Crawford County Area Solid Waste Agency Commission for the year ended June 30, 2007

Audit report on the Hardin County Sanitary Solid Waste Disposal Commission for the year ended June 30, 2007

Audit report on the Hardin County Sanitary Solid Waste Disposal Commission for the year ended June 30, 2007

Audit report on the Great River Regional Waste Authority for the year ended June 30, 2007

Audit report on the Great River Regional Waste Authority for the year ended June 30, 2007

Reconstruction of metal pollution and recent sedimentation processes in Havana Bay (Cuba): A tool for coastal ecosystem management.

Since 1998 the highly polluted Havana Bay ecosystem has been the subject of a mitigation program. In order to determine whether pollution-reduction strategies were effective, we have evaluated the historical trends of pollution recorded in sediments of the Bay. A sediment core was dated radiometrically using natural and artificial fallout radionuclides. An irregularity in the (210)Pb record was caused by an episode of accelerated sedimentation. This episode was dated to occur in 1982, a year coincident with the heaviest rains reported in Havana over the XX century. Peaks of mass accumulation rates (MAR) were associated with hurricanes and intensive rains. In the past 60 years, these maxima are related to strong El Niño periods, which are known to increase rainfall in the north Caribbean region. We observed a steady increase of pollution (mainly Pb, Zn, Sn, and Hg) since the beginning of the century to the mid 90s, with enrichment factors as high as 6. MAR and pollution decreased rapidly after the mid 90s, although some trace metal levels remain high. This reduction was due to the integrated coastal zone management program introduced in the late 90s, which dismissed catchment erosion and pollution.

Report on the Shelby County Area Solid Waste Agency for the year ended June 30, 2008

Report on the Shelby County Area Solid Waste Agency for the year ended June 30, 2008

Audit report on the Butler County Solid Waste Commission for the year ended June 30, 2008

Audit report on the Butler County Solid Waste Commission for the year ended June 30, 2008

Insects associated with the composting process of solid urban waste separated at the source

Sarcosaprophagous macroinvertebrates (earthworms, termites and a number of Diptera larvae) enhance changes in the physical and chemical properties of organic matter during degradation and stabilization processes in composting, causing a decrease in the molecular weights of compounds. This activity makes these organisms excellent recyclers of organic matter. This article evaluates the succession of insects associated with the decomposition of solid urban waste separated at the source. The study was carried out in the city of Medellin, Colombia. A total of 11,732 individuals were determined, belonging to the classes Insecta and Arachnida. Species of three orders of Insecta were identified, Diptera, Coleoptera and Hymenoptera. Diptera corresponding to 98.5% of the total, was the most abundant and diverse group, with 16 families (Calliphoridae, Drosophilidae, Psychodidae, Fanniidae, Muscidae, Milichiidae, Ulidiidae, Scatopsidae, Sepsidae, Sphaeroceridae, Heleomyzidae, Stratiomyidae, Syrphidae, Phoridae, Tephritidae and Curtonotidae) followed by Coleoptera with five families (Carabidae, Staphylinidae, Ptiliidae, Hydrophilidae and Phalacaridae). Three stages were observed during the composting process, allowing species associated with each stage to be identified. Other species were also present throughout the whole process. In terms of number of species, Diptera was the most important group observed, particularly Ornidia obesa, considered a highly invasive species, and Hermetia illuscens, both reported as beneficial for decomposition of organic matter.

Audit report on the Hardin County Sanitary Solid Waste Disposal Commission for the year ended June 30, 2008

Audit report on the Hardin County Sanitary Solid Waste Disposal Commission for the year ended June 30, 2008

Audit report on the Rural Iowa Waste Management Association for the year ended June 30, 2008

Audit report on the Rural Iowa Waste Management Association for the year ended June 30, 2008

Audit report on the Crawford County Area Solid Waste Agency Commission for the year ended June 30, 2008

Audit report on the Crawford County Area Solid Waste Agency Commission for the year ended June 30, 2008

Audit report on the Pocahontas County Solid Waste Commission for the year ended June 30, 2008

Audit report on the Pocahontas County Solid Waste Commission for the year ended June 30, 2008

Audit report on the Jones County Solid Waste Management Commission for the year ended June 30, 2008

Audit report on the Jones County Solid Waste Management Commission for the year ended June 30, 2008

Audit report on the Delaware County Solid Waste Disposal Commission for the year ended June 30, 2008

Audit report on the Delaware County Solid Waste Disposal Commission for the year ended June 30, 2008

Audit report on the Iowa Water Pollution Control Works Financing Program and the Iowa Drinking Water Facilities Financing Program, joint programs of the Iowa Finance Authority and the Iowa Department of Natural Resources for the year ended June 30, 2008

Audit report on the Iowa Water Pollution Control Works Financing Program and the Iowa Drinking Water Facilities Financing Program, joint programs of the Iowa Finance Authority and the Iowa Department of Natural Resources for the year ended June 30, 2008