The contamination from birds and insects and any animals that can get in is far greater than 400cc of human urine.
I'd take an educated guess - but I'm unqualified.
It ain't just soot, it's paydirt.
"I swear, wherever Gift goes, argument follows." -Youtube comment
I wish I could say that draining the reservoir is the dumbest thing that the city has done, but it is only one of many. I'm pretty pissed off that they are closing schools but decide to waste money because of the "yuck factor" (that is the term used by the decision maker). That reservoir supplies a very small amount of the city's water, the vast majority comes from a reservoir near Mt. Hood.
As to open air reservoir; that will change soon. Today, the state rejected a variance to keep them uncovered. That rejections had nothing to do with the recent incident. I have no doubt the city will spend a hundred million dollars to make sure an endangered salamander won't be affected by the cover.
Here you go:
Mt. Tabor & Washington Park Reservoirs
Mt. Tabor & Washington Park Storage Reservoirs
Distribution storage reservoirs receive water from the terminal storage reservoirs by gravity flow or pumping. Water from distribution reservoirs is delivered directly to customers. These reservoirs are located at the various elevations required to serve customers and have a storage capacity of approximately 220 million gallons. System pressures typically range from 40 to 80 pounds per square inch. Distribution storage reservoirs range in size from 1,000 gallons to 10 million gallons. They are constructed of concrete or steel. They include ground-level reservoirs, standpipes, and elevated tanks.
Consulting engineers have evaluated the bureau's facilities to determine their ability to withstand earthquakes. The Portland Water Bureau has made repairs, and where necessary, lowered water levels in tanks to withstand seismic events.
Mt. Tabor and Washington Park Reservoirs
The Portland Water Bureau maintains reservoirs in Mt. Tabor and Washington Parks.
Water flows from the Mt. Tabor reservoirs by gravity. This saves on electricity and plumbing costs.
The water is cold: 1-10 degrees C (35-5- degrees F).
Security surveillance cameras monitor the reservoirs 24 hours per day.
The Water Bureau owns all reservoir sites.
Open reservoirs must be cleaned every six months.
You've got to love the Internet.
I feel pretty dumb. I read that web page after the indecent and never got to the last line. Maybe that explains why the city of Portland is allowed to make bad choices. I found the problem and it is in my mirror.
I'm sure I read in a news article that the city has until 2013 or 14 to bury all reservoir- by Federal Law