Strategies to filter TSS

1. Drainage basins don't typically remove TSS by themselves. For the filters you'll need to confirm the TSS removal rates with the manufacturer and get documentation from them showing the infield performance data. 2. I don't know of any table that correlates filter mesh with TSS removal rates. I think there a lot of factors that come into play outside of just the mesh size. Again the best bet is to contact the manufacturers as they generally conduct their own tests. 3. You describe a train of treatment devices. Here is the approach we recommend: TSS x (1- % removal efficiency) = A A x (1- % removal efficiency) = B B x (1- % removal efficiency) = C ... A is the TSS remaining after that BMP. B is the TSS remaining after that BMP plus the measure that achieved A, and so on... One item of note, although the table on page 104 of the Reference Guide states that an oil/grit separator removes 15% of the TSS on average, you should confirm this again (sorry for being so repetitious) with the design and manufacturer. Remember that the Ref. Guide also defines TSS as those particles too small or light to be removed via gravity settling.