Spreadsheet: 17cd9362-992b-4347-970a-629b64373ce1
Sheet: Sheet1

Red triangles at the upper right hand corner indicate design comments | Unnamed: 1 | Unnamed: 2 | Unnamed: 3 | Unnamed: 4 | Unnamed: 5
Please complete the yellow shaded items.
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
STORMFILTER SUPPLEMENT
This form must be filled out on line, printed and submitted with all of the required information.
Make sure to also fill out and submit the Required Items Checklist (Section III) and the O&M Agreement
I.  PROJECT INFORMATION
Project name
Contact name
Phone number
Date
Drainage area number
II.  DESIGN INFORMATION
Site Characteristics
Drainage area (AD) |  | ft2 | 1
Drainage area (AD) |  | acres | 0
Impervious area |  | ft2
Impervious area | 0 | acres
% Impervious (IA) |  | %
Design rainfall depth (RD) |  | in
Peak Flow Calculations
1-yr, 24-hr runoff depth |  | in
1-yr, 24-hr intensity |  | in/hr
Pre-development 1-yr, 24-hr runoff |  | ft3/sec
Post-development 1-yr, 24-hr runoff |  | ft3/sec
Pre/Post 1-yr, 24-hr peak control |  | ft3/sec
Large Design Storm
Design Storm to control |  | yr
 |  | hr
Rainfall intensity, large design storm | 0 | in/hr
Peak flow, large design storm |  | ft3/sec
Length of overflow weir |  | ft
Storage Volume
Design volume (WQV) |  | ft3
Adjusted water quality volume (WQVAdj) |  | ft3
Volume contained before filter |  | ft3
Runoff Coefficient (RV) |  | (unitless)
Pretreatment credit (estimated or calculated), %pre | 0.3
Mass loading calculations
Mean Annual Rainfall, P |  | in
Agency required TSS% removal
Percent Runoff Capture (% capture)
Mean Annual Runoff,Vt |  | ft3
Event Mean Concentration of Pollutant, EMC |  | mg/l | (Suggestion: Use 60 for residential, 70 for Commercial, 100 for Industrial) | (Suggestion: Use 60 for residential, 70 for Commercial, 100 for Industrial)
Annual Mass Load, Mtotal |  | lbs
Filter System
Filtration brand | StormFilter
Cartridge height |  | in
Specific Flow Rate, q |  | gpm/ft2
SHWT elevation |  | ft amsl
Bottom of the StormFilter vault elevation |  | ft amsl
Clearance  (dSHWT)
Time to drain the StormFilter (t) |  | hours
Time to drain the StormFilter (t) |  | days
Cartridge Quantity Calculation
Mass removed by pretreatment system, [NAME] |  | lbs
Mass load to filters after pretreatment, Mpass1 |  | lbs
Estimate the required filter efficiency, Efilter
Mass to be captured by filters, Mfilter |  | lbs
Maximum Cartridge Flow rate, Qcart | 0 | gpm
Mass load per cartridge, Mcart (lbs) |  | lbs
Number of Cartridges required, Nmass
Maximum Treatment Capacity
SUMMARY
Maximum Treatment Flow Rate, cfs
[NAME], gpm | 0
Number of Cartridges
Additional Information
Does volume in excess of the design volume bypass the filter? |  | Y or N
Is an off-line flow-splitting device used? |  | Y or N
If draining to SA waters: Does volume in excess of the design volume flow evenly distributed through a vegetated filter? |  | Y or N
What is the length of the vegetated filter? |  | ft
Does the design use a level spreader to evenly distribute flow? |  | Y or N
Is the BMP located at least 30ft from surface waters (50ft if SA waters)? |  | Y or N
Are the vegetated side slopes equal to or less than 3:1 |  | Y or N
Is the BMP located in a recorded drainage easement with a  recorded access easement to a public Right of Way (ROW)? |  | Y or N
[NAME] | [NAME] Matrix |  | Cartridge Mass Capacity
 | 1 gpm/ft2 | 2 gpm/ft2 | 1 gpm/ft2 | 2 gpm/ft2
LD 18 | 7.5 | 15 | 36 | 22.5 | Same Size and amount of media as 18", but activates at 12".
18 | 7.5 | 15 | 36 | 22.5
27 | 11.25 | 22.5 | 54 | 33.75
12 | 5 | 9.8 | 24 | 15
15 | 6.1 | 12.3 | 30 | 18.8
18 | 7.5 | 14.7 | 36 | 22.5
StormFilter | 1
MFS | 2