Bryce Feed Station Timbergrove Manor Civic Club Update

Bryce Feed Station Timbergrove Manor Civic Club Update Meeting Project No. R-000020 -0010 -4 Mariluz Padilla| March 19, 2019

11 th Street Schematic System HOUSTON PUBLIC WORKS | 611 WALKER STREET | HOUSTON, TX 77002 | PWECIP@HOUSTONTX. GOV 1

Pre-project Numbers (Before Bio scrubber installation) Odor Control Measurement Diagram NAME: HYDROGEN SULFIDE • MAIN SOURCE OF ODOR GASEOUS H 2 S CONCENTRATION: *0. 08 PPM: NUISANCE FENCE-LINE LIMIT *Blue line represents the odor level HOUSTON PUBLIC WORKS | 611 WALKER STREET | HOUSTON, TX 77002 | PWECIP@HOUSTONTX. GOV 3

Data Performance (After Bio scrubber installation) BEFORE TREATMENT • INLET: (FRONT-END) AVERAGE = 18. 6 PPM (18, 600 PPB) MAXIMUM = 94. 0 PPM. AFTER TREATMENT • OUTLET: (BACK END) AVERAGE = 0. 0835 PPM (83. 5 PPB) MAXIMUM = 2. 50 PPM. • ODOR REMOVAL EFFICIENCY: AVERAGE = 99. 6 %. HOUSTON PUBLIC WORKS | 611 WALKER STREET | HOUSTON, TX 77002 | PWECIP@HOUSTONTX. GOV 4

Strategies for Eliminating Odor at Eleventh Street Bio-scrubber/Chemical Feed System and Surrounding Area HOUSTON PUBLIC WORKS | 611 WALKER STREET | HOUSTON, TX 77002 | PWECIP@HOUSTONTX. GOV By: Jesus Gonzalez, Jr. 5

Strategies for Eliminating Odor at Eleventh Street Bio-scrubber/Chemical Feed System and Surrounding Area HOUSTON PUBLIC WORKS | 611 WALKER STREET | HOUSTON, TX 77002 | PWECIP@HOUSTONTX. GOV 6