Tony Shelton
BS Detector, Esquire
I agree on the independent analysis, if contractors want to present a strong case , we need to show beyond what we may consider logic, we need to present specific scientific evidence as a group IMO.
The effects of Option # 1 looks good on paper.
As you indicated their are three interdependent parties involved.
The contractor: I understand Option #1 benefits
The customers : They have to understand option #1 benefits, this decision is subject to factors/constraints on the owner, (attitude, budget, local ordinances, etc)
The Authority Having Jurisdiction: Ultimately they are the ones that have jurisdiction on the use of the storm water BMP use for option #1.
Tony, what can we offer/suggest to the AHJ's as "containment specific filters" and methods that may satisfy them?
We may also need to prove our claim of minimal effect on storm water BMP installation and it resulting outfall quality/improvement. The may also want a procedure for check and balances (maybe an NPDES permit for contractor)
The last challenge would be for AHJ's to change the ordinances on the books.
Let me first address the NPDES permit for contractors. Nigel, I respect all your scientific knowledge, but you really need to go back and read the CWA. An NPDES for contractors would put us all out of business in one day. It is a large burden on big companies like 7-11 and auto repair chains. The costs involved would dwarf most of our annual incomes. We have to work within the NPDES permits held by our cities. There is no other option. Unless, we let the PwNA have it's way and only the few people on the board own all the powerwashing companies in the US and we just work for them.
Next, regarding the filters:
There are literally hundreds of filters on the market made to deal with just about any type of contaminant you can think of. The first thing you need to do is find out what contaminants they are concerned with from the type of property you are cleaning, then present them with a filter that deals with that contaminant.
After the BP oil spill there was an explosion of new technologies to deal with oil. Please observe the simplicity of this. The media in this example is less then $10.00:
Remember the claim that on quart of oil can contaminate 150,000 gallons of water?