What is the first step in the prior installation steps for filter soil media (bioretention)?

What is the first step in the prior installation steps for filter soil media (bioretention)?

• A. Construction starts after stabilizing contributing drainage area with vegetation; utilities should be checked before excavation
• B. Hold reconstruction meeting to confirm drainage area boundaries
• C. Install temporary E&S controls for stormwater diversion
• D. Excavate bioretention from sides

Answer: (A)

The first step is to stabilize the contributing drainage area with vegetation and check for buried utilities before any excavation. Stabilizing the drainage area helps prevent erosion and sediment from entering the bioretention area during construction, which protects downstream water quality and reduces sediment loads that could compromise the media. Checking for utilities beforehand prevents striking lines, avoids safety hazards, and saves time and rework. These preparatory actions set the stage for the next steps, such as establishing erosion and sediment controls and confirming drainage area boundaries, rather than starting any excavation or field adjustments without first ensuring stability and locating underground utilities.

The first step is to stabilize the contributing drainage area with vegetation and check for buried utilities before any excavation. Stabilizing the drainage area helps prevent erosion and sediment from entering the bioretention area during construction, which protects downstream water quality and reduces sediment loads that could compromise the media. Checking for utilities beforehand prevents striking lines, avoids safety hazards, and saves time and rework.

These preparatory actions set the stage for the next steps, such as establishing erosion and sediment controls and confirming drainage area boundaries, rather than starting any excavation or field adjustments without first ensuring stability and locating underground utilities.