Is our basement air safe?: home radon test + mitigation-readiness plan, Rapid City SD.

A Rapid City, SD family finished their basement into a playroom, then learned the Black Hills region carries some of the highest indoor radon levels in the country (EPA Zone 1) from uranium-bearing bedrock. They have never tested and want to know whether the air where their kids sleep and play is safe, and what it would take to fix it if it is not. This packet delivers the family's claim of safe air: correctly-placed EPA-protocol radon testing, the result interpreted against the 4 pCi/L action level, and, if warranted, a sub-slab depressurization mitigation-readiness plan scoped for a certified installer. Health-primary; Real, Proven, One-of-one.

Where

Residential home, Rapid City, SD (EPA Radon Zone 1) · Open the map

Pay

$380 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 — recorded, and readable any time at vealth.net/labor/credit/(your wallet). You see which before you claim, never after.

Proof

household concerns + lowest-level occupancy + foundation/entry-pathway photos + GPS + EPA-protocol test placement + pCi/L result vs 4 pCi/L action level + mitigation-readiness plan: Real, Proven, One-of-one

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

Level

advanced

Open until

2026-10-15

Posted by

0x034F…6c89

The creator wallet. Its signature is what approves proof and settles the wage.

How this work is done

A documented method, so this packet comes out the same whoever does it.

Bring

• EPA-listed radon test device (short-term charcoal / alpha-track kit or a continuous radon monitor)
• camera
• tablet/clipboard with the EPA radon protocol + 4 pCi/L action-level reference + NRPP/NRSB certified-professional lookup
• flashlight (foundation, sump, crawlspace, service penetrations)
• tape measure (test-placement height + foundation/entry-pathway mapping)

Steps

1. 1. Sit with the household first: what prompted the concern (a neighbor's result, a basement bedroom/playroom, a real-estate transaction, a known Zone 1 county)? Who spends time on the lowest lived-in level and how many hours, children, sleeping areas, and any smokers (radon + smoking multiplies lung-cancer risk)? Record any prior test and its placement. Capture their concerns in their own words.
2. 2. Map and photograph the foundation and the lowest lived-in level: slab / crawlspace / full or walk-out basement, sump pit, drain tile, floor and wall cracks, and service penetrations, the soil-gas entry pathways a mitigation system would address.
3. 3. Guide correct placement of the EPA-protocol test: lowest lived-in level, ≥20 in. above the floor, ≥3 ft from exterior walls/windows/doors, away from drafts, heat, and humidity; NEVER in a kitchen, bathroom, or laundry. For a short-term test, establish closed-house conditions (windows/exterior doors shut, normal HVAC) 12 hours before and throughout. Record the device type, start time, and duration.
4. 4. Record the radon result in pCi/L and interpret it against the EPA 4 pCi/L action level. If the result is at or above 4 pCi/L, note that the EPA recommends a confirming follow-up (a second short-term test or a long-term test) before committing to a permanent system; if a continuous monitor was used, note the hourly variability.
5. 5. Where mitigation is warranted, scope a sub-slab depressurization readiness plan as a spec for a certified installer, candidate suction-point location, sump/drain-tile tie-in, fan location and vent-stack routing above the eave/roofline, electrical availability, and the required post-mitigation re-test. This is a scope, NOT an installation; no drilling, sealing, or fan is fitted.
6. 6. Assemble the plan with the household: the current radon picture, whether action is warranted, the mitigation scope with a rough cost band, and the NRPP/NRSB-certified-professional path. Note interim risk-reduction steps (increase ventilation, avoid using the lowest level as a bedroom for vulnerable occupants) for the window before mitigation.
7. 7. Review the plan WITH the household so they own the result and the next step; enter photos, GPS/address, test placement + type + result, the action-level interpretation, and the mitigation-readiness plan; sign. The family's claim of safe air = this plan + this evidence, Real (tested and mapped), Proven (photo + GPS + result + signature), One-of-one (this home, this foundation, this occupancy).

What counts as done

• Household's radon concerns recorded in their own words + who uses the lowest lived-in level and how many hours
• Foundation type + radon entry pathways photographed (slab/crawl/basement, sump, drain tile, floor and wall cracks, service penetrations)
• EPA-protocol test placement documented: lowest lived-in level, ≥20 in. off the floor, ≥3 ft from exterior walls/windows/doors, closed-house conditions, start time; test type + duration recorded
• Radon result in pCi/L recorded and interpreted against the EPA 4 pCi/L action level
• GPS / address confirm
• Mitigation-readiness plan where warranted: candidate suction-point location, sump/drain-tile tie-in, fan + vent-stack routing above the eave, required post-mitigation re-test, NRPP/NRSB-certified installer path, OR a documented below-action-level retest-interval recommendation
• Interim risk-reduction steps noted for vulnerable occupants pending mitigation

Proof is measured against these, not judged by taste.