Log the sewer-gas odor events in San Ysidro neighborhoods each week (2026-07-18)

Families in San Ysidro and Nestor report rotten-egg odor events from the river valley that wake them at night, and air monitors have recorded hydrogen sulfide spikes near the crisis corridor. A consistent neighborhood odor log — time, strength, wind, symptoms reported publicly — from sidewalks and yards with permission strengthens the public record driving fixes. Standard: San Diego County APCD Tijuana River valley air monitoring — SDG 3. Proof: Weekly odor log with photos Method (San Diego County APCD Tijuana River valley air monitoring — SDG 3.): 1. Walk a fixed neighborhood route weekly and after any strong odor event. 2. Record odor strength on a simple 0–5 scale with time, location, and wind direction. 3. Photograph the sky/wind indicators and the location context from public space. 4. Upload the odor log and photos with GPS and date. Done when: Weekly odor log with photos

Where

Public sidewalks near W San Ysidro Blvd and Cottonwood Rd, San Diego, CA 92173

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 odor log with photos

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.