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Significance and Use
This test method evaluates RECPs and their means of installation to:
Reduce soil loss and sediment concentrations in stormwater runoff under conditions of varying channel conditions and soil type;
Function within a composite system acting as vegetative reinforcement; and
Improve water quality exiting the area disturbed by earthwork activity by minimizing mobilization of in-situ particles within the streambed.
This test method models and examines conditions typically found on construction sites involving earthwork activities, including: highways and roads; airports; residential, commercial and industrial developments; pipelines, mines, and landfills; golf courses; etc.
This test method is a performance test, but can be used for quality control to determine product conformance to project specifications. Caution is advised since information regarding laboratory specific precision is incomplete. For project specific conformance, unique project-specific conditions should be taken into consideration.
1.1 This test method covers the guidelines, requirements and procedures for evaluating the ability of Rolled Erosion Control Products (RECPs) to protect earthen channels from stormwater-induced erosion. Critical elements of this protection are the ability of the RECP to:
1.1.1 Neutralize and absorb the hydraulic force of stormwater, thereby reducing soil particle loosening through “scour” mechanisms;
1.1.2 Slow runoff and encourage sedimentation, thereby reducing soil particle transport downstream;
1.1.3 Absorb shear forces of overland flow;
1.1.4 Trap soil particles beneath; and
1.1.5 Promote the establishment of vegetation.
1.2 This test method utilizes full-scale testing procedures, rather than reduced-scale (bench-scale) simulation, and is patterned after conditions typically found on construction sites prior to and after revegetation work. Further, procedures for evaluation of baseline conditions are provided. Thus, test preparation, test execution, data collection, data analysis and reporting procedures herein are intended to be suitable for testing of bare soil, unvegetated RECP, vegetated soil and vegetated RECP conditions.
1.3 This test method provides a comparative evaluation of an unvegetated RECP to baseline bare soil conditions and a vegetated RECP to a baseline, vegetated condition under controlled and documented conditions.
1.4 The values stated in SI units are to be regarded as standard. The inch-pound units given in parentheses are provided for information purposes only.
1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Also, the user must comply with prevalent regulatory codes, such as OSHA (Occupational Health and Safety Administration) guidelines, while using the test method.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
C136 Test Method for Sieve Analysis of Fine and Coarse Aggregates
D422 Test Method for Particle-Size Analysis of Soils
D698 Test Methods for Laboratory Compaction Characteristics of Soil Using Standard Effort (12 400 ft-lbf/ft3 (600 kN-m/m3))
D1556 Test Method for Density and Unit Weight of Soil in Place by Sand-Cone Method
D2922 Test Methods for Density of Soil and Soil-Aggregate in Place by Nuclear Methods (Shallow Depth)
D4318 Test Methods for Liquid Limit, Plastic Limit, and Plasticity Index of Soils
D4595 Test Method for Tensile Properties of Geotextiles by the Wide-Width Strip Method
D6475 Test Method for Measuring Mass Per Unit Area of Erosion Control Blankets
D6525 Test Method for Measuring Nominal Thickness of Permanent Rolled Erosion Control Products
D6526 Test Method for Analysis of Toluene by Capillary Column Gas Chromatography
D6566 Test Method for Measuring Mass per Unit Area of Turf Reinforcement Mats
D6567 Test Method for Measuring the Light Penetration of a Turf Reinforcement Mat (TRM)
D6818 Test Method for Ultimate Tensile Properties of Turf Reinforcement Mats
ICS Number Code 13.080.01 (Soil quality in general)