Concentrated Animal Feeding Operation (CAFO) Land Application Fields

Concentrated Animal Feeding Operations (CAFOs) are large-scale industrial facilities for raising and feeding livestock. State and federal environmental rules and regulations require CAFOs to obtain permits regulating the handling and disposal of CAFO waste. These permits are under the National Pollutant Discharge Elimination System (NPDES) permitting program. The NPDES permitting program regulates discharges from point sources to surface waters, and under the Clean Water Act, CAFOs are considered point sources of pollution. CAFO facilities are required to conduct assessments of all agricultural fields where CAFO waste is land applied. As part of these assessments, CAFO facilities provide maps of land application fields as pdfs or picture files. Maps of these land application fields have long been available in Comprehensive Nutrient Management Plan (CNMP) reports, but they have not been easily accessible. From 2020 to 2024, EGLE staff digitized the boundaries of these fields using maps provided in the CNMP reports. There are several limitations with the CAFO Land Application Fields layer. First, there may be inconsistencies in the accuracy of the spatial data because the digitizing effort was conducted by various staff and interns across several years. For example, some digitized fields may include rivers, roads, and wetlands within their boundaries, while other fields may have been digitized in a way that excludes such features. Additionally, the acreages listed in the attribute table of the field polygon layer are the acres provided in the CNMP reports and reflect the areas of the fields where CAFO waste is applied, rather than the exact dimensions of the fields. Thus, the Department would caution users on making management decisions based on this information. For questions regarding the limitations and usages of this layer, please contact Amanda Bosak, supervisor of the Water Quality and Aquatic Nuisance Control Unit, at [e-mail]. EGLE will periodically add more data as it is received. Data will be added through manual updates. Additionally, individual permittees will be responsible for updating their own field layers in MiEnviro Portal, and these updates are periodically incorporated into the CAFO Land Application Fields Layer. For more information regarding EGLE's CAFO permitting program, please visit this webpage: Concentrated Animal Feeding Operation (CAFO). Field Name Field Description Permittee Name of the permitted CAFO facility PermitNum Number of the CAFO permit held by the facility FieldName Name of the land application field集中式动物饲养场（Concentrated Animal Feeding Operations，CAFOs）是用于畜禽规模化饲养与饲喂的大型工业化设施。州级与联邦级环境法规要求CAFOs获取许可，以监管其粪肥的处理与处置流程。此类许可隶属于国家污染物排放消除系统（National Pollutant Discharge Elimination System，NPDES）许可项目。NPDES许可项目监管点源向地表水的污染物排放，根据《清洁水法》，CAFOs被认定为污染点源。 CAFO设施需对所有施用其粪肥的农田开展评估。作为评估的必要环节，CAFO设施需提供粪肥施用地块的地图，格式为PDF或图像文件。此类粪肥施用地块地图长期以来可在综合养分管理计划（Comprehensive Nutrient Management Plan，CNMP）报告中获取，但此前难以便捷获取。2020年至2024年期间，密歇根环境质量部（EGLE）工作人员依托CNMP报告中的地图，完成了此类地块边界的数字化工作。 本CAFO粪肥施用地块图层存在若干局限性：其一，空间数据的精度可能存在不一致性，因该项数字化工作由不同年份的多名工作人员及实习生完成。例如，部分数字化地块的边界可能包含河流、道路与湿地等地物，而其他地块的数字化边界则可能未纳入此类要素。其二，地块多边形矢量图层属性表中所列的面积数值，取自CNMP报告中提供的地块规划面积，而非地块的实际精确尺寸。因此，该部门提醒使用者，切勿基于本数据做出管理决策。 若需了解本图层的局限性与使用规范，请联系水质与水生有害生物防控部门主管Amanda Bosak，邮箱地址：[e-mail]。EGLE将定期接收并新增数据，新增数据将通过手动更新的方式纳入本图层。此外，各许可持有人需在MiEnviro门户中更新各自的地块图层，此类更新将定期整合至CAFO粪肥施用地块图层。如需了解EGLE的CAFO许可项目详情，请访问以下网页：集中式动物饲养场（CAFO）。 字段说明： - 字段名称：Permittee，字段描述：获批的集中式动物饲养场设施名称 - 字段名称：PermitNum，字段描述：该设施所持有的CAFO许可证编号 - 字段名称：FieldName，字段描述：粪肥施用地块的名称