Build a bioswale in the Central Avenue median to catch runoff before Chattanooga Creek (2026-07-20)

Rainwater sheets off Central Avenue straight to the storm system and into Chattanooga Creek with nothing to slow it down or filter it first. A planted bioswale in the median would hold and clean that first flush before it reaches the creek. Standard: EPA green infrastructure design guidance for urban medians Proof: Photo set of the finished bioswale plus a planting list with GPS tag Method (EPA green infrastructure design guidance for urban medians): 1. Mark the bioswale footprint in the median and confirm it clears utility lines 2. Hand-dig a shallow basin graded to hold and slow runoff 3. Line the basin with amended soil suited to periodic standing water 4. Plant native wet-tolerant grasses and shrubs through the basin 5. Mulch the bed and photograph the finished bioswale with GPS tag Done when: Photo set of the finished bioswale plus a planting list with GPS tag

Where

Central Ave median, Chattanooga, TN

Pay

$700 proposed

This packet is not funded yet, so this figure is a proposed price and not money waiting in escrow. If a buyer funds it, approved proof settles that price onchain. If nobody funds it, approved proof earns provable credit toward the work instead of cash. You see which before you claim, never after.

Proof

Photo set of the finished bioswale plus a planting list with GPS tag

This is exactly what gets it approved. Nothing settles without it.

Level

advanced

Open until

2026-08-19

How this work is done

A documented method, so this packet comes out the same whoever does it. Typically 30–75 minutes. Method of record: EPA green-infrastructure inspection (bioretention / bioswale / permeable pavement function + maintenance)

Bring

• measuring tape
• GPS phone
• camera
• trowel / probe
• data sheet
• gloves

Steps

1. 1. Locate the GI asset; record GPS; identify the type (rain garden / bioswale / permeable pavement / tree filter).
2. 2. Photograph the asset, its inlet, and its outlet/overflow.
3. 3. Check the inlet and outlet for blockage (sediment, trash, mulch) and note whether flow can enter/leave freely.
4. 4. Check for standing water and estimate whether it drains within the design window (typically <24-48h after rain); probe media if dry.
5. 5. Assess vegetation/media condition and estimate sediment/trash accumulation depth.
6. 6. Note erosion, bypass, or structural damage and list the maintenance needed.
7. 7. Enter asset type, condition, inlet/outlet status, drainage observation, sediment level, maintenance needs, GPS, photos; sign.

If it does not match the plan

• Standing water persists > 48h after rain -> flag failed infiltration (clogged media) for rehab.
• Inlet or outlet blocked -> flag for cleaning; the asset isn't capturing runoff.
• Erosion, undercutting, or flow bypassing the asset -> flag for repair.
• Documentation only — no digging out media or altering structures.

What counts as done

• Asset type + overall condition recorded
• Inlet + outlet clear/blocked status recorded
• Standing-water / infiltration observation recorded
• Sediment/trash level + maintenance recommendations + GPS + photos

Proof is measured against these, not judged by taste.