The wastewater technician For Colorado is Fred Hand.
He has experience with lagoons, trickling filters, activated sludge, filters, digestion and dewatering, and has visited most of the wastewater systems in the state.
It is probable that he can help your system with on site troubleshooting, training and/or paddling out to get lagoon sludge depth measurements.
The more systems he helps, the more tips and experience he gains which could very possibly be just the solution for your problem.
So call with questions or a request for an onsite visit, he would be glad to come. (719 545 6748)