Landfill Closure & Cover High Solid Soil Matrix Amendment
in Otago Region

Exposed subsoils in this region lack the organic structure required for immediate vegetation establishment. High shear forces easily dislodge traditional straw and mulch blankets during severe weather events. Unpredictable storm cells demand a rain-fast binder; you cannot afford to wait 24 to 48 hours for a standard matrix to cure when heavy runoff threatens to destabilize the slope, compromise the subgrade, and trigger immediate regulatory fines.

Operational Constraints for Landfill Closure

Daily and intermediate landfill covers face severe wind erosion, off-gassing, and strict regulatory leachate controls. Loose soils blow offsite or wash into drainage systems, instantly triggering compliance violations. The objective is to seal the surface without adding excessive weight or moisture to the waste mass. You need a high-viscosity hydraulic hydro-cap that forms a durable crust over the refuse. The polymer must lock in dust and aggressively repel rainwater to prevent it from infiltrating the cell and increasing the site's expensive leachate treatment volume.

Meeting State DOT & EPA SWPPP Specifications

OHRA GreenTack anchors seed and mulch directly to the subsoil, providing the rain-fast shear strength required by State DOT & EPA SWPPP. Its microplastic-free botanical hydrocolloid network forms a 3D matrix. It resists high-velocity storm runoff and keeps synthetic toxins out of the watershed.

The matrix prevents "fisheye" lumping inside your hydroseeder pump. This stops pump cavitation and reduces friction head loss. You maximize your tank's spray payload and eliminate constant agitation adjustments on the job site.