For 30 years Alan oversaw the landscape construction portion of city construction projects in Issaquah. He provided landscape design and plant selection for projects. He inspected the plants and their installation, and assisted with the irrigation design. He also developed the tree retention plans for existing trees on construction sites.
Some of the main projects he was involved in included:
- Gilman Blvd Edible Landscape
- Maple Street Landscape
- Juniper Street and Seventh Ave Landscape
- Rainier Boulevard Landscape
- Southeast 56th Street Landscape
- Second Ave Landscape
- Tibbetts Valley Park
- Tibbetts Creek Manor Landscape
- Depot Park
- Gibson Park
- Veterans Memorial Park
- Walen Hill Park
- Central Park
- Black Nugget Park
- Grandview Park
- Pickering Barn and Farm Landscape
- City Hall Landscape
- City Hall South Landscape
- City Hall Northwest Landscape
- Upper Hillside Cemetery Landscape
- Harvey Manning Park at Talus
- Squak Valley Park
- Confluence Park