The concentration of the metals, Al, As, Cr, Co, Cu, Fe, Pb, Ni, Zn, expressed as total metal, should not exceed 1 eg/L each, and Cd, Hg, and Ag, expressed as total metal, should not exceed 100 ng/L each.
Metal is concentrated but should not exceed 100 ng/L.
Metal should not exceed 5 ng/L.
Nobody on stage
There is no way to reach the temple without a boat.
Some men are on a rooftop.
Three people spraying graffiti on the wall.
A woman is vacuuming her room.
There is a man.