Hand remove a flagged hydrilla mat at Johnson Park on Lake Marble Falls, site 3, Johnson Park (City of Marble Falls Parks and Recreation Department), 230 S. Avenue J, Marble Falls, TX 78654 (2026-07-29)

The survey above flagged a hydrilla mat near this public dock and boat ramp, and hand pulling it under confirmed LCRA and Texas Parks and Wildlife Department approval keeps the invasive plant from choking boat access and native habitat here. Standard: US EPA Rapid Bioassessment Protocols plus Texas Parks and Wildlife Department and LCRA aquatic invasive species management guidance (all vegetation management on Lake Buchanan, Inks Lake, Lake LBJ, Lake Marble Falls, or Lake Travis requires advance TPWD and LCRA approval), applied here to the Highland Lakes reservoir chain at Marble Falls, Burnet County and Kingsland, Llano County, Texas. SDG 6.3 and 6.6. Proof: agency approval confirmation plus before after photos plus bagged volume record plus GPS Method (US EPA Rapid Bioassessment Protocols plus Texas Parks and Wildlife Department and LCRA aquatic invasive species management guidance (all vegetation management on Lake Buchanan, Inks Lake, Lake LBJ, Lake Marble Falls, or Lake Travis requires advance TPWD and LCRA approval), applied here to the Highland Lakes reservoir chain at Marble Falls, Burnet County and Kingsland, Llano County, Texas. SDG 6.3 and 6.6.): 1. 1. Confirm the removal crew holds current LCRA and Texas Parks and Wildlife Department vegetation management approval for this reservoir segment before entering the water. 2. 2. Put on a personal flotation device and work in a two person minimum team, entering only the shallow, calm, clearly visible water the survey flagged. 3. 3. Hand pull hydrilla stems and roots from the flagged mat and bag the plant material so no fragment drifts free to re root elsewhere. 4. 4. Photograph the cleared area from the matching before vantage and record the bagged volume removed. Done when: agency approval confirmation plus before after photos plus bagged volume record plus GPS

Where

Johnson Park (City of Marble Falls Parks and Recreation Department), 230 S. Avenue J, Marble Falls, TX 78654

Pay

$220 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

agency approval confirmation plus before after photos plus bagged volume record plus GPS

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

Level

advanced

Open until

2026-10-28

How this work is done

A documented method, so this packet comes out the same whoever does it. Typically 30–60 minutes. Method of record: EPA dry-weather / AMD field screening

Bring

• GPS phone
• pH meter or strips
• conductivity meter
• ammonia + iron test kit as specified
• surfactant screen if specified
• gloves
• camera

Steps

1. 1. Navigate to the outfall/reach; record GPS; photograph it, capturing any visible flow or staining.
2. 2. Note whether flow is present in dry weather (yes/no).
3. 3. Measure and record pH, conductivity, and each specified analyte per kit instructions.
4. 4. Log any color, odor, floc, or aquatic-life observation.
5. 5. Enter all readings with units, GPS, time, and photos into the proof record; sign.

If it does not match the plan

• Dry-weather flow present with elevated conductivity/ammonia/surfactants -> flag suspected illicit discharge for the responsible agency.
• pH < 6 with visible iron floc -> tag suspected acid mine drainage; recommend metals lab panel.

What counts as done

• pH + conductivity recorded with units
• Each specified analyte recorded with a value
• Dry-weather flow present? recorded yes/no
• GPS waypoint + timestamped photo

Proof is measured against these, not judged by taste.