Summary statistics for data collected for Washington State TAPE GULD certification. NOTE: These data are not to be applied to crediting for mtds in Minnesota. For mtd credits, link here
Link to this table

Manufactured treatment device Median inflow TP (mg/L) Median inflow TSS (mg/L) TP Removal (%) TSS removal (%)
Number samples Data with influent > 0.05 mg/L TP TAPE analysis All data TAPE analysis
Data with influent > 0.05 mg/L TP Meeting TAPE criteria Median Mean LCL TAPE median TAPE LCL Median Mean LCL TAPE median
Filterra System 0.090 43.5 17 10 69.0 66.8 59.0 78.5 69.2 89.5 86.2 82.8 89.3
Filterra Bioscape - see Filterra System
StormFilter using PhosphoSorb Media 0.280 389 17 16 81.5 77.4 69.9 78.7 63.6 91.6 88.1 84.8 89.0
Up-Flo Filter w/Filter Ribbons 0.109 29 20 13 50.3 41.5 31.0 57.1 49.9 75 67.6 59.9 77.5
MWS-Linear Modular Wetland 0.103 44 24 16 61.3 60.6 52.5 63.3 54.0 81.9 76.6 71.2 82.9
BayFilter w/EMC Media1 0.160 53 12 10 68.6 64.0 59.4 68.6 58.2 89.3 86.1 81.12 89.3
StormGarden Modular Stormwater Bio-filtration System 0.078 29 20 15 58.9 57.4 52.9 58.9 43.2 89.2 86.0 82.8 91.9
BioPod Biofilter 0.104 40 13 7 71.7 66.7 59.4 75.4 62.4 83.3 86.5 82.1 91.9
BoxlessBioPod Biofilter - see BioPod Biofilter
FloGard Perk Filter 0.123 62.5 21 15 66.5 62.3 53.0; 58.6 without outlier 70.7 48.8 (60.6 without outlier) 80.6 74.7 68.5 81.1
The Kraken 0.142 53 14 10 74.5 71.9 63.9 83.6 71.3 90.6 87.4 77.5 90.7
Jellyfish Filter 0.338 134 23 18 75.2 73.6 68.2 71.0 66.8 86.2 80.0 74.1 78.4
StormTree biofiltration 0.118 38 27 29 62 57 51 68 61 93 92 90 92
Media Filtration System Though this device is GULD certified, it is not used in Minnesota. We therefore did not analyze the data.
Stormfilter using ZPG Media Though this device is GULD certified, it is not used in Minnesota. We therefore did not analyze the data.
ecoStorm plus We have not received data for this device
1 Only data meeting TAPE inflow requirements was available.
2 Six outflow concentrations were at the reporting level of 2.5 mg/L; we used half the reporting limit in our analysis