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Construction steps:
Key Inspection Points:*Verify that’s correct pretreatment device (jelly fish, vegetation, curbing, etc.)*Correct size and location*Correct elevation and footing *Is it tied into the curb? Or could happen before the curbing?*Does it work?
Mistakes to Avoid:
→Backfill Granular and Pipes (SPC)
'''Pre-treatment and Inlet'''<br>
'''Pre-treatment and Inlet'''<br>
Pre-treatment structures are most cost effective when they slow down incoming flows, collect sediment for easy clean out, and slowly release water to the bioretention facility mitigating erosion. Pre-treatment structures/strategies can include [[curb cuts]], [[Aggregates]], proprietary devices like filters or hydrodynamic separators, vegetation, concrete sumps and etc.
Pre-treatment structures are most cost effective when they slow down incoming flows, collect sediment for easy clean out, and slowly release water to the bioretention facility mitigating erosion. [[Pretreatment]] structures/strategies can include [[curb cuts]], [[Aggregates]], proprietary devices like filters or hydrodynamic separators, vegetation, concrete sumps, membrane filters, overland flow sumps, etc.
Construction Steps:<br>
Construction Steps:<br>
#Excavate and prepare base for proprietary pre-treatment device according to design.
#Excavate and prepare base for proprietary pre-treatment device according to design.
#Install proprietary pre-treatment device according manufacturer directions.
#Install proprietary pre-treatment device according manufacturer directions.
#Manufacturer representative may need to confirm proper installation and functioning through approved testing and inspection.
#Manufacturer representative may need to confirm proper installation and functioning through approved testing and inspection. <br>
<gallery mode="packed" widths=275px heights=275px>
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[[Category:Gallery]]
Key Inspection Points:<br>
*Using wrong concrete forms if concrete curbs are selected
*Verify that the correct pre-treatment device (jellyfish filter, vegetation, curbing, etc.) is being installed.
*Verify that all components of the pre-treatment device are installed
*Verify correct size and location of pre-treatment device.
*Verify correct elevation, slope, and footing according to design
*Is it tied into the curb, downspout, or other inlet? Or could happen before the curbing?
*Wet weather performance check:
**Does it work?
**Is water entering the LID facility properly?
**Is sediment and debris accumulating?
**Is it dissipating erosive forces?
For more information about pre-treatment strategies and their design, visit these page: [[Pretreatment]] and [[Pretreatment features]]<br>
Mistakes to Avoid:<br>
*Pre-treatment component parts are missing
*Grading/elevation errors that deviates from design
**Incorrect pipe inverts causing short circuiting
**Insufficient grade drop or slope into pre-treatment to ensure positive flow of water
**Improper grading from pre-treatment to LID feature inhibiting positive flow
**Insufficient sump depth to account for sediment and debris accumulation
*Using wrong concrete forms if concrete curbs are part of pre-treatment.
For more information about pre-treatment strategies and their design, visit these page: [[Pretreatment]] and [[Pretreatment features]].
'''Soil Media / Filter Media'''<br>
'''Soil Media / Filter Media'''<br>