Welcome! TRI/Environmental, Inc. (TRI) is an independent, third party, erosioncontrol testing firm providing testing and research services to the international erosion control community. TRI is unaffiliated with any manufacturer or engineering firm, and thus provides non-competitive services to regulators, manufacturer, engineering firms, contractors and installers.

TRI provides laboratory conformance/verification testing as well as performance related studies.  In addition to routine index testing in accordance with ASTM, ISO, BS, DIN and GRI test methods, TRI also provides bench scale hydraulic indicator tests, and large scale hydraulic performance test procedures. Materials tested include all erosion control materials including:

Large scale testing of erosion materials being subjected to sheet flow on a 3:1 slope per the large scale testing specification ASTM D7351. Other videos,click here.