PPM: 500/ 1,000,000 =0.0005 

 

Fluid: 9 x 42 = 378 x 8.34 = 3,152.52 lbs

 

Treatment: 3,152.52 x .0005 = 1.57626 lbs of sticks

 

With the new info on 50/50 water to oil I would suggest the treatment could cut in 1/2. So 1.576/2=0.788 lbs of sticks or 1 stick of the THPS stick 1 1/4″ x 15″.