Trunk Injection Emmamectin Benzoate Treatments - Ash Trees

The City of Golden is seeking proposals for trunk injection emmamectin benzoate treatments on approximately 70 ash trees managed by the City. The treatments must be completed with a plugless injection system, and the applicators must be licensed to apply pesticides in Colorado and be ISA certified arborists. The project duration is approximately 3 months, and the treatments must be completed after full leaf-out in the spring and by the end of June 2026. Key requirements include: • Trunk injection applications with emmamectin benzoate to preventatively protect ash trees from damages caused by Emerald Ash Borer • Use of a plugless injection system such as Q-connect • ISA certified arborists and Colorado Department of Agriculture pesticide applicators • Treatments to be completed after full leaf-out in the spring and by the end of June 2026 • Approximately 70 ash trees to be treated, ranging in size from 10"-40" DBH • Proposals to include cost per trunk diameter inch, qualifications and experience, and references