Technical Maintenance Illustrations

I need technical drawings to illustrate maintenance works in a watercourse for the Environment Agency. The illustrations should be designed for project planning purposes, and need a quick turnaround.

The drawings should include:
- Equipment used
- Site layout

Ideal skills and experience:
- Proficiency in technical illustration
- Experience with environmental or construction-related drawings
- Ability to deliver high-quality work under tight deadlines

Please provide samples of similar work.