在公共绿地低洼处建一处雨水花园（唐山南湖生态公园） / Build a rain garden.

唐山南湖生态公园有一处雨后积水的低洼地，水停几天才退，既进不了地下也用不上，还长蚊子。 / A low spot at Tangshan Nanhu Eco Park ponds after rain and takes days to clear, so the water neither soaks in nor gets used, and it breeds mosquitoes while it sits.

Where

唐山南湖生态公园, 河北省唐山市 / Tangshan Nanhu Eco Park, Tangshan, Hebei, CN · Open the map

Pay

$300 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

前后照片＋下渗速率数据＋面积与蓄水深度实测＋48小时排空验证 / before/after photos + infiltration rate + measured area and ponding depth + 48-hour drain-down verification

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

Level

intermediate

Open until

2026-10-04

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.

Steps

1. 做简易下渗试验，确定土壤下渗速率。 / Run a simple infiltration test to establish the soil's rate.
2. 按下渗速率确定花园面积与蓄水深度（不超过20厘米）。 / Size the garden and its ponding depth from that rate, ponding no deeper than 20 cm.
3. 手工开挖并回填透水种植土。 / Dig by hand and backfill with permeable planting soil.
4. 栽植耐湿耐旱兼具的乡土植物，铺覆盖物。 / Plant natives that tolerate both wet and dry, and mulch.
5. 倒水试验，确认48小时内排空。 / Run a water test and confirm it drains within 48 hours.

What counts as done

• 建设前积水照片 / Before photo of the ponding low spot
• 下渗试验数据 / Infiltration test data
• 建成后照片与面积、蓄水深度实测 / After photo with measured area and ponding depth
• 48小时内排空的验证记录 / Verification that it drained within 48 hours

Proof is measured against these, not judged by taste.

The standard this serves

Green Stormwater Infrastructure. Green stormwater infrastructure is the city's way of handling rain the way a meadow does: rain gardens, planted swales, and permeable pavement that let a storm soak in instead of surging down a pipe. The EPA's inspection standard keeps these systems honest, because a neglected rain garden quietly stops working while still looking like a garden. Mastery is the inspector's eye: reading inlets, overflow, plants, and soil in a single practiced pass. This packet is one such inspection, one basin checked and one record filed, which is precisely how a thousand basins stay alive.