Filtrexx® products meet or exceed all specifications. In fact, Filtrexx research was used to develop most of the specifications for compost filter sock used by Federal, State, and local agencies.

Federal Approvals

State Approvals

Alabama

ALDOT: Approved

Alaska

DOT: Approved (at discretion of project engineer/contractor)

Arizona

ADOT: Approved

Arkansas

AHTD: Not approved

California

Caltrans: Approved, Filtrexx® products on QPL

Colorado

CDOT: Approved

Delaware

DelDOT: Approved
DNREC: Approved

Florida

FDOT: Approved (at discretion of project engineer/contractor)
DEP: Approved (at discretion of project engineer/contractor)

Georgia

GDOT: Specified, section 893 & 163
GSWCC: Accepted in State E&SC Manual

Hawaii

HIDOT: Approved

Idaho

ITD: Approved

Illinois

IDOT: Under evaluation

Indiana

INDOT: Approved

Iowa

IADOT/SUDAS: Approved
DNR: Approved

Kansas

KSDOT: Approved (at the discretion of project engineer/contractor)

Kentucky

KYTC: Approved (at the discretion of project engineer/contractor)

Louisiana

LADOTD: Approved (at the discretion of project engineer/contractor)

Maine

DOT: Approved, products on QPL

Maryland

DOT: Under review
MDE: Approved
Montgomery County: Approved

Massachussetts

MassDOT: Approved, specified

Michigan

MDOT: Approved

Mississippi

MDOT: Approved

Missouri

MODOT: Approved

Montana

MDOT: Approved (at the discretion of project engineer/contractor)

Nebraska

NDOR: Approved

Nevada

NDOT: Approved (at the discretion of project engineer/contractor)

New Hampshire

NHDOT: Approved, Filtrexx® products on QPL

New Jersey

NJDOT: Approved as equivalent to silt fence & straw bale

New Mexico

NMDOT: Approved

New York

DOT: Approved

North Carolina

DOT: Approved for use (NP-04430)
DENR: Approved

North Dakota

DOT: Approved

Ohio

DOT: Under review
DNR: Approved

Oklahoma

DOT: Approved (at the discretion of project engineer/contractor)

Oregon

DOT: Specified, Filtrexx® products on QPL

Pennsylvania

DOT: Approved
DEP: Approved, specified

Rhode Island

DOT/DEM: Approved

South Carolina

DOT: Approved, Filtrexx® products on QPL

South Dakota

DOT: Not approved

Tennessee

DOT: Approved
Knox County: Approved
City of Chattanooga: Approved

Texas

DOT: Approved, specified
TNRCC: Approved, specified
TCEQ: Approved, specified

Utah

DOT: Approved

Vermont

DOT: Approved

Virginia

DOT: Approved

Washington

DOT: Approved, SiltSoxx and DitchChexx on QPL
DOE: Approved

West Virginia

DOT: Approved

Wisconsin

DOT: Approved, SiltSoxx™ and DitchChexx™

Wyoming

DOT: Approved (at the discretion of project engineer/contractor)

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