Large-Scale Commercial Drainfield Installation

I'm seeking a skilled contractor to design and install a conventional drainfield system for a large commercial project on over 5 acres.

Sheets that I need are:
Title sheet
Existing conditions (just a plan from Lidar is fine)
Forcemain plan/profile (
Layout of tanks and manifolds
Details. All can be xreffed
Plan notes, all boards and base map will be provided

No one local is needed. This is only for design

Key requirements:
- Expertise in installing conventional drainfields
- Experience with large-scale projects, particularly for commercial use
- Knowledge of local regulations and compliance requirements
- Ability to provide a detailed design plan and execute it effectively
- Heavy equipment operation skills

Ideal skills and experience:
- Background in civil engineering or related fields
- Proven track record with similar large commercial drainfield projects
- Strong project management skills
- Licensed and insured

Please provide a portfolio of similar work and a detailed project timeline.