what our braying buddy from boston was trying to hee haw out was... "how many city workers does it take to change a light bulb?"
the answer is complex... If free of regulations then one is sufficient. OSHA and EPA and cal trans requirements and democrat passed safety regulations may require as many as a dozen with as many as 4 of those certified in confined space rescue and/or traffic safty and flagging certification along with shoring experts and certified equipment operators.
It may not even be pssible to assemble a complete team out of 30 workers due to many being unailable due to getting contact hours for certification or taking mandatory saftey classes or sensitivity classes or... supervision may not be possible as I may be attending manditory 'how to get along with fellow employees" or "how to arange office funriture in order to get make people more productive" or "why you can't call employees lazy fat asses" classes.
EPA mandates and science such as "your aura may cause pollution" also have to be considered before taking on such a dangerous and environmentaly sensitive job.
Even if the job is completed... the paperwork may take a week to write up and another 6 months to make the rounds of mid managers and various ahgencies involved (they are all involved).
lazs