Applied Polymer Systems, Inc.

- Model APS 700 Series - Polyacrylamide Erosion Control Powder

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APS 700 Series Silt Stop is a group of soil specific polyacrylamide co-polymer powders used for erosion control.  They reduce and prevent erosion of fine particles and prevent colloidal clays from entering water bodies.

Primary Applications:

  • Mine Tailings and Waste Piles
  • Newly Cleared Construction or Building Sites
  • Road and Highway Construction
  • Hydroseeding and Water Truck Application
  • Hand Spreading and Ditch Placement

Features and Benefits:

  • Removes Solubilized Soils and Clay from Water
  • Prevents Colloidal Solutions in Water when Applied to the Soil Surface
  • Will Reduce Soil Movement During Rain Event on Moderate Slopes
  • Binds Cationic Metals within the Soil Matrix, Reducing Solubilization
  • Reduces Pesticide and Fertilizer Loss During Rain Events
  • Reduces Wind Borne Dust Conditions
  • Increases Soil Permeability and Water Penetration to Shallow Plants
  • Reduces Operational and Cleanup Costs
  • Reduces Environmental Risk and Compliance

Specifications / Compliances:

  • ANSI/NSF Standard 60 Drinking water treatment chemicals
  • 48 Hr. or 96 Hr. Acute Toxicity Tests (D. magna, P. promelas, or O. mykiss)
  • 7 day Chronic Toxicity Tests (P. promelas or C. dubia)
  • Packaging:
  • APS 700 Series Silt Stop powders are packaged in 50 Lbs Bags

Technical Information:

  • Appearance / White Granular Powder
  • Bulk Density - 40-50 Lbs./Cubic Foot
  • Percent Moisture - 15% Maximum
  • pH 0.5% Solution - 6-8
  • Shelf Life - up to 5 Years

Coverage:
Soft Armoring application rate (per acre coverage): varies by soil content and grade of slope.
Gentle to Moderate slopes (0 to 4H:1V)
High Clay Content:
10-20 # powder
High Sand Content:
25-50 # powder
Steep slopes (3H:1V to 1H:1V)
High Clay Content:
20-35 # powder
High Sand Content:
45-50 # powder

Hydroseeding application rate (per acre coverage): varies by soil content and grade of slope.

Gentle to Moderate slopes (0 to 4H:1V)
High Clay Content:
10-20 # powder/ 3000 gallons/ acre
High Sand Content:
25-50 # powder/ 3000 gallons/ acre
Steep slopes (3H:1V to 1H:1V)
High Clay Content:
20-35 # powder/ 3000 gallons/ acre
High Sand Content:
40-50 # powder/ 3000 gallons/ acre

Note: Dosage-application rates are determined by soil specific testing.  Soil polymers and blends should never be used without testing the soil first.  The above rates are generalized guidelines only, please refer to your soil specific test results for specific application rates.  Consult your local distributor or send your samples to Applied Polymer Systems, Inc. for testing.

Directions for Use:

Dry Form:
APS Silt Stop Powder may be applied by hand spreader, mechanical disc, or hand sowing. Slop or ditch application may require artificial support such as straw, or wood fiber mulch to reduce down slope movement. Areas of high water velocity will require benching or tier structuring to reduce velocity. Sheet flow applications are best.

APS Silt Stop Powder may be mixed with dry silica sand to aid in spreading. Ratios of sand to powder will vary in accordance with the type of spreading device used.

Liquid Form:
APS Silt Stop Powder may be applied with hydroseeders, water trucks or other spraying devices. All spraying devices must have a mechanical agitator, mixing apparatus or hydraulic recirculation. Caution - DO NOT mix powder into a spraying device that does not contain a mixing apparatus.

Sprinkle powder into the water with the mixing apparatus operating as the last material to be added to the mix. Three to five minutes of mixing will be required after the powder is sprinkled into the water. ADD THE POWDER SLOWLY - adding the powder too fast will result in clumping resulting in poor performance. Longer mixing times will create high viscosity solutions possibly causing some types of spray equipment to undergo cavitations.

Clean-up:
Spilled powder should be cleaned up dry as best as possible using broom or vacuum. Extreme slippery conditions will result if the polymer becomes wet. In event of skin contact, wash powder from skin as soon as possible using soap and water.

Precautions/Limitations:

  • Prevent inhalation of the powder, use adequate dust mask.
  • Clean up spills quickly. DO NOT use water unless necessary, extremely slippery conditions will result.
  • DO NOT add water to the APS Silt Stop powder, add the powder to the water slowly (sprinkle).
  • APS Silt Stop powders will remain viable on the soil surface for 60-90 days.  Longer viability will occur when applied powder is covered with straw or wood fiber mulch.
  • APS 700 Series Silt Stop powders has been specifically tailored to specific soil types.  Soil types in varying geographic areas may require testing.  If proper performance of this product is not satisfactory, contact Applied Polymer Systems.

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