Erosion control products shall meet the requirements of applicable Iowa Department of Transportation Specifications.



To obtain approval, the manufacturer shall submit the following to the Construction and Materials Bureau in Ames, Iowa:

1.   Product identification including brand name and product number

2.   A sample suitable for testing may be requested by the Construction and Materials Bureau.

3.   The NTPEP test data for products covered by NTPEP along with adherence to NTPEP submission cycles. (For TRM ASTM D6460 testing only, please see table 4169.10-1 note c of the standard specifications for additional information on approved testing facilities). For Hydraulic Mulches, independent test data may be submitted for review and approval.

4.   Company information with list of contact personnel and any available product literature.

5.   For perimeter and slope and ditch check sediment control devices:

·         Filter socks containing compost:  Manufacturer shall provide documentation for compost as noted in section below.

·         Wattles:  Manufacturer shall provide documentation that material is certified by the Iowa Crop Improvement Association or other state’s Crop Improvement Associations as Certified Noxious Weed Seed Free Mulch.



Acceptance of erosion control products will be on the basis of approved brand name, except grate intake sediment filter bags and open-throat curb intake sediment filters, which will be accepted based on the manufacturer’s certification. Compost will be accepted if the material is from a participant in the US Composting Council’s Seal of Testing Assurance (STA) Program or on the basis of satisfactory test results performed by a STA certified lab For Turf Reinforcement Mats (TRM), higher class/type TRMs are allowed for use as lower class/type TRMs.  For example, a TRM Type 3 would be allowed for use as a Type 1, 2, or 3.


Approved brand names are listed by manufacturer in the Materials Approved Products Listing Enterprise (MAPLE). The brand name submitted to the department for NTPEP tested devices will be the same as submitted to NTPEP.


Manufacturer’s certification for grate intake sediment filter bags and open throat curb intake sediment filters shall include this statement:

“This is to certify that (insert product name) meets the applicable Specifications, Standard Road Plan, and/or other contract document of the Iowa Department of Transportation for (insert item name: grate intake sediment filter bags or open-throat curb intake sediment filters)”



The Construction and Materials Bureau may sample and test erosion control products to verify compliance with specifications. Products found to be non-compliant may be rejected.