Existing independent data and specifications

1 Independent erosion control blanket and sediment retention device data 

As shown in the previous section, we can thank the National Transportation Product Evaluation Program (NTPEP) and the GSWCC for most of the available independent testing of ECPs and SRDs. 

The NTPEP program has included both index tests and bench-scale indexed performance tests. The goal of the program is to minimize duplicative testing of ECPs done by individual State Departments of Transportation (DOTs) by providing a process by 

The GSWCC testing programs were intended to characterize full-scale, installed performance of commonly used SRDs in a range of applications. The testing is to serve 

2 Generic erosion controi product and sediment retention device specifications 

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