Engineering Guide

Extreme 1:1 Steep Slope High Solid Storm Runoff Mitigation Matrix
in Maryland

MDOT SHA forces you to hit strict stabilization timelines—you only have 3 to 7 days to spray before you get cited. You must till the seedbed and mix in pulverized dolomitic limestone to stabilize the subsoil. Spray your hydroseed immediately to stop rill erosion across disturbed soils.

Operational Constraints for Large-Scale Civil Projects

Large-scale earth-moving operations expose vulnerable subsoil to immediate wind and water shear. Traditional stabilization methods require excessive manual labor, heavy equipment tracking over finished grades, and frequent repeat applications after weather events. You require a high-yield hydraulic matrix that locks down the slope in a single pass. The binder must flow smoothly through the hydroseeder pump without fisheye clumping, maximizing your tank yield and eliminating the need for constant mechanical agitation adjustments on the job site.

1,500-3,500 Application Rate (Lbs/Acre)
99.9% Erosion Reduction
< 2 Hour Cure Time

Meeting 2011 MDE Standards / MDOT SHA Section B-4 Specifications

OHRA GreenTack & ViscoLok anchors seed and mulch directly to the subsoil, providing the rain-fast shear strength required by 2011 MDE Standards / MDOT SHA Section B-4. 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.

Interactive Field Slurry Estimator

Estimate your ViscoLok EFM material load based on your exact slope conditions. (Note: ViscoLok is highly dependent on localized soil composition. Consult engineering for final specifications).

ViscoLok Estimate 2,500 LBS
Total Water Needed 5,000 GAL
Tank Loads 5 LOADS

Field Troubleshooting Guide

Field Symptom Likely Cause Immediate Job-Site Fix
Slurry Too Thick / Hard to Pump Exceeded recommended loading ratio Add 50 gallons water & agitate 2 mins
Foam Overflowing Tank Hatch High-shear agitation air entrainment GreenTack maintains a low-foaming profile during high-shear agitation
Nozzle Spitting or Clogging Commodity tackifier agglomerations (fisheyes) GreenTack's dispersion modifiers prevent fisheye formation
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