Manufactured Treatment Devices Pilot Update 2014

Types of MTDs? Hydrodynamic Separators Cartridge Filters Biofiltration In a Box Trash Capture

Why MTDs? Small footprint Retrofit opportunities Less costly Simple maintenance routine Reduced system maintenance

Déjà vu? “Traps” installed in early ‘90s 16 routes/170 inlets proposed 3 routes/~80 inlets remain

Renewed focus in downtown Shoal & Waller creeks ◦ Lower Shoal Seaholm Redevelopment District ◦ Waller Creek District Surface Improvements Watershed Capital Projects ◦ Lower Shoal Stream Restoration$4M ◦ Lower Shoal WQ Retrofit$500k ◦ Waller Tunnel & Improvements$149M ◦ Waller WQ Retrofit$2.5M Lower Shoal PER Background Bio Clean Inlet Basket

Bio Clean Inlet Basket

Pilot One year 7 locations 6 week schedule Data collected o Time o Weight

In service… 6 Trinity Barton S. 1st

Vermiculture?

A helping of leaves with your trash

Ick-factor

Findings 17 Traps17 Baskets # minutes per route # visits per year 5212 # of crew per visit 42 manhours per year full time equivalent (FTE) labor cost/ $19.28/hr $ 2005 $ 2098 lbs collected per year $/lb collected $ 1.51 $ 0.49 Field ops data 6 th street trap route Extrapolated pilot data

Pilot Report