Env Engg II Latest Lectures

Combined Rar file containing both lectures:
http://www.mediafire.com/download/p4wj2f88kr7dkva/Env%2520II.rar
The 1st link is here:
http://www.mediafire.com/view/dbdetb0d3sayrqu/Lec%25209%2520%2528%2520Pre-Treatment%2529.pdf
2nd:
http://www.mediafire.com/view/dg3zayjpm8w9xc9/Lec%252010%2520%2528%2520Primary-Treatment%2529.pdf