Darling Environmental & Surveying, Ltd. provides environmental permitting services to city, county, state and federal governments, private landowners, utilities, municipalities, and the mining industry in Arizona, Nevada, Utah and California.

Our wildlife biologists, planners, ecologists, naturalists, and other key employees work with all aspects of environmental consulting from on-the-ground surveys to complex environmental analysis document writing and acquisition of environmental permits from various federal, state, and local agencies.

We have extensive experience with Environmental Assessments, Environmental Impact Statements, Threatened and Endangered Species, Habitat Conservation Plans, Incidental Take Permits, Section 7 Consultations, U.S. Army Corps of Engineers 404 permits, U.S. Forest Service and BLM permitting, and more. A list of Environmental and Biological Services offered is presented below:

• Survey for threatened and endangered species according to U.S. Fish and Wildlife Service, U.S. Forest Service, and BLM protocols
• Prepare NEPA documents (EAs, EISs, Categorical Exclusions) for linear projects including utility corridors, mining projects, landfills, and a variety of the other land use activities
• Inventory, assess, and map habitat for species of interest
• Prepare biological assessments and evaluations
• Delineate waters of the United States that fall under the jurisdiction of the U.S. Army Corps of Engineers for Section 404 permitting
• Prepare U.S. Army Corps of Engineers Section 404 permit applications
• Prepare Environmental Site Assessments (Phase I, II & III in accordance with ASTM and industry standards)
• Prepare extraordinarily detailed maps utilizing professional grade sub-centimeter Trimble GPS (accurate within 1 centimeter) and AutoCAD drawings
• Prepare 3 D laser scanning images with 6 millimeter accuracy
• Mitigation Reports
• Conduct noxious weed and invasive species surveys
• Inventory native plants and prepare Native Plant Preservation Plans
• Prepare and/or review environmental reports and procedures
• Perform legal research of environmental requirements
• Storm Water Pollution Prevention Plans

 What is the NPPO?
Native Plant Preservation Ordinances have been enacted within Pima County, Marana, Oro Valley, and the City of Tucson to promote the preservation of native plants and native plant communities within their jurisdictions. The ordinances include comprehensive requirements (species, size, health, transplantability) for the preservation-in-place, transplanting-on-site, or removal-from-site of protected native plants and specify the mitigation requirements for the transplanting or removal of inventoried species.