Soil-organic-carbon baseline for the cover-crop zones, a working ranch parcel off County Road 45, Glendo, WY 82213

The rancher adopting cover crops on this parcel wants to measure soil carbon change over time, but has no organic-carbon baseline; without one, any future carbon-building claim is unverifiable. Standard: USDA-NRCS/COMET stratified SOC + bulk density; SDG 13.2 Proof: GPS grid + depth cores + bulk-density + COC to lab + management note Method (USDA-NRCS / COMET soil organic carbon baseline (stratified cores + bulk density, lab SOC by dry combustion), ~60-120 min): 1. Confirm the field + management zone; record GPS; lay out stratified sampling points by soil type / slope position. 2. At each point, take cores at defined depth increments (e.g., 0-10 and 10-30 cm); record each depth. 3. Collect a known-volume bulk-density sample at each depth (needed to compute carbon per area). 4. Composite same-depth cores per zone; bag, label, and complete chain-of-custody to the lab for SOC% by dry combustion. 5. Photograph the site, a soil profile, and each sampling point; note land use and management history. 6. Record the GPS grid, depths, bulk-density samples, COC number, and photos into the proof record; sign. Equipment: soil core sampler / auger, bulk-density ring (known volume), depth tape / markers, sample bags + labels, GPS phone, camera, chain-of-custody + data sheet Done when: Stratified cores at defined depths recorded per zone; Bulk-density sample collected per depth increment; Composited samples bagged + chain-of-custody to an accredited lab; GPS grid + profile/point photos + management-history note

Where

a working ranch parcel off County Road 45, Glendo, WY 82213

Pay

$95 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

GPS grid + depth cores + bulk-density + COC to lab + management note

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

Level

advanced

Open until

2026-09-15

How this work is done

A documented method, so this packet comes out the same whoever does it. Typically 60–120 minutes. Method of record: USDA-NRCS / COMET soil organic carbon baseline (stratified cores + bulk density, lab SOC by dry combustion)

Bring

• soil core sampler / auger
• bulk-density ring (known volume)
• depth tape / markers
• sample bags + labels
• GPS phone
• camera
• chain-of-custody + data sheet

Steps

1. 1. Confirm the field + management zone; record GPS; lay out stratified sampling points by soil type / slope position.
2. 2. At each point, take cores at defined depth increments (e.g., 0-10 and 10-30 cm); record each depth.
3. 3. Collect a known-volume bulk-density sample at each depth (needed to compute carbon per area).
4. 4. Composite same-depth cores per zone; bag, label, and complete chain-of-custody to the lab for SOC% by dry combustion.
5. 5. Photograph the site, a soil profile, and each sampling point; note land use and management history.
6. 6. Record the GPS grid, depths, bulk-density samples, COC number, and photos into the proof record; sign.

If it does not match the plan

• SOC% is lab-measured, not field-read -> mark result 'pending lab'; make NO on-site carbon claim.
• Very low SOC / bare compacted zones observed -> flag as priority for carbon-building practices.
• Do not claim a carbon credit or retirement from this baseline alone — it establishes a starting point for later re-measurement.

What counts as done

• Stratified cores at defined depths recorded per zone
• Bulk-density sample collected per depth increment
• Composited samples bagged + chain-of-custody to an accredited lab
• GPS grid + profile/point photos + management-history note

Proof is measured against these, not judged by taste.