Keep the weekly stand-off air record along the South Colton rail corridor (2026-07-18)

South Colton grew up beside one of the busiest rail junctions in Southern California, and homes on La Cadena Drive sit within a block of idling locomotives and truck transfer traffic. Residents have long reported soot and diesel odor, and the neighborhood is exactly the kind of place air regulators need block-level records from. A weekly photo-and-observation round from public sidewalks builds that record. Standard: US EPA NAAQS particulate standards; CARB AB 617 community air protection — SDG 11. Proof: Weekly timestamped photo set plus observation log from the same vantage Method (US EPA NAAQS particulate standards; CARB AB 617 community air protection — SDG 11.): 1. Stand at the named public corner at the same hour each week. 2. Photograph the rail corridor, any idling locomotives or queued trucks, and soot on nearby surfaces. 3. Count trucks and note train idling time during a 15-minute window. 4. Record wind direction, odor, and visible haze. 5. Upload photos with GPS and date and log the observations. Done when: Weekly timestamped photo set plus observation log from the same vantage

Where

Public sidewalk vantage near La Cadena Dr & O St, Colton, CA 92324

Pay

$80 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

Weekly timestamped photo set plus observation log from the same vantage

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

Level

entry

Open until

2026-07-25

How this work is done

A documented method, so this packet comes out the same whoever does it. Typically 45–90 minutes. Method of record: EPA NAAQS community ambient-air screening (PM2.5)

Bring

• calibrated PM2.5 monitor
• GPS phone
• wind/weather note source
• hi-vis vest
• camera

Steps

1. 1. Choose >=3 points (near-source/roadside, mid, background); record GPS at each; stay off the roadway.
2. 2. Photograph each monitoring location.
3. 3. Log PM2.5 (ug/m3) at each point over a comparable peak period.
4. 4. Record wind direction, time, and nearby source activity (e.g., truck traffic).
5. 5. Compare readings to the NAAQS reference.
6. 6. Enter the PM2.5 logs, wind/time, source note, GPS, photos into the proof record; sign.

If it does not match the plan

• Roadside work near heavy traffic -> stay off travel lanes; hi-vis at all times.
• Near-source PM2.5 well above background and NAAQS -> flag an environmental-justice exposure concern.

What counts as done

• PM2.5 logged at >=3 points (near-source / mid / background)
• Wind direction + time recorded
• Source-activity observation recorded
• GPS waypoints + location photos

Proof is measured against these, not judged by taste.