It's likely that a stormwater pond system will need to be implemented to clean the stormwater before it works its way into the wetland.  

I believe that this exemption can only be implemented in a house hack or primary residence so just looking for anyone with experience doing this and if it is helpful in cost savings.

you can do one of several things. you can include electric in the rent (not always a good option) , you can stipulate, in the lease, that the electric bill is split 50-50, you can implement RUBS which divides the bill into the percentage of space it takes up (for example one side is bigger so they pay 60% of the electric, or the 2 bedroom pays 66% and the 1 bedroom pays 33%), or you can submeter the electric which allows you to split the bill you receive according to the actual electric used, finally you can discuss with your electric company what needs to be done to add a separate meter to the duplex. submeter and second meter are most expensive options, but in my opinion are the best for your long term sanity and profit.

I am going to implement 1 and 7 from your list. 

In our partnership, I’m the methodical one, I do the books, run the backend like building and implementing the company SOPs. 

Help me to develop a reasonable plan that I can implement.

RUBSAnybody have experience implementing RUBS for a large apartment complex?

Has anyone specifically dealt with this issue in this particular town, and what safeguards if any should be implemented?

Mainly, the systems implemented are fascinating (VA, automated offers, etc.)

What special rules do I need to follow (e.g. proper number and placement of smoke detectors and carbon monoxide detectors) that might apply to a rental property that don't apply to a primary residence, or where can I find these rules?