3884.1SCOPE
Provide hydraulically applied hydraulic erosion control products (HECPs) to control erosion on all soil types and to establish vegetative cover.
3884.2REQUIREMENTS
Provide HECPs meeting the following requirements and characteristics:
(1)Non-corrosive to hydraulic application Equipment
(2)Non-foaming or containing mixture enhancers to prevent foaming and mixing problems
during agitation in the application Equipment
(3)Safe to the applicator, adjacent workers, and the environment if properly applied in
accordance with the Environmental Protection Agency (EPA) and OSHA Apply HECPs with Equipment capable of mechanical agitation and slurry bypass. Manufacture of polyacrylamide tackifier, organic fiber matrix, bonded fiber matrix, and reinforced fiber matrix shall certify applicator’s of their product and provide them an “Applicator’s Certificate.” A Hydraulic Tackifiers A.1 Natural Tackifier Provide any of the following types of natural tackifiers with an erosion control performance no greater than 3 months:
(1)Water soluble natural proteins
(2)Vegetable gums
(3)Guar gums; at least 95 percent guar gum by weight and the remaining weight
consisting of dispersing and cross-link additives
(4)Starch; non-ionic, cold-water soluble, pre-gelatinized granular cornstarch
(5)Psyllium; finely ground mucilloid coating of plantago seeds applied as a dry
powder or a wet slurry to the surface of the soil
(6)Pitch; non ionic emulsion with a solids content of at least 48 percent
(7)Rosin types blended with gelling and hardening agents, consisting of at least
26 percent of the total solids content
(8)Water soluble blends of hydrophilic polymers, viscosifiers, sticking aids, and
other gums Use non-corrosive, water-diluted emulsion soil stabilizer capable of curing to water-insoluble binding and cementing agent upon application. A.2 Synthetic Tackifier Provide synthetic tackifiers with an erosion control performance no greater than 18 months and meeting the following characteristics and requirements:
(1)Consists of polyvinyl acetate emulsion formulations containing at least
55 percent active solids
(2)Does not contain poly-acrylates or polyvinyl-acrylics
(3)Water-soluble
(4)Remains flexible and does not re-emulsify after curing
(5)Does not inhibit water and oxygen infiltration
(6)Consists of organic, biodegradable, non-polluting, non-volatile, non-toxic
Material
(7)Effective on all soil types with either acid or alkaline condition
(8)Air cures within 48 hours
A.3 Polyacrylamide Tackifier Provide polyacrylamide (PAM) tackifiers meeting the following requirements and characteristics:
(1)Break down within 6 months
(2)Naturally break down in soil
(3)Liquid formulation containing PAM as the primary active ingredient and
meeting the following requirements:
(a)Linear, anionic copolymer of acrylamide and sodium acrylate
(b)Residual monomer content of the PAM no greater than 0.05 percent
by weight
(c)Formulated as a water-in-oil emulsion containing at least 2.6 pounds
pure PAM per gal, and containing at least 30 percent active pure PAM
(d)Formulated as a liquid dispersed polyacrylamide (LDP), containing at
least 4.4 pounds pure PAM per gallon, and containing at least 35 percent active pure PAM
(4)Drying time no greater than 4 hours
B Hydraulic Matrix Tracer dyes or pigments when provided with product to facilitate application and metering shall be water soluble, non-toxic, and non-leachable. B.1 Organic Fiber Matrix (OFM) Provide hydraulic organic fiber matrix meeting the following characteristics and requirements:
(1)Shall be premixed formulation
(2)Contains a minimum of 88 percent organic Material that may be derived from
compost, peat moss, wood cellulose, straw fibers, wood bark, biochar, flax fibers, or other organic fibers
(3)Product shall be phyto-sanitized to eliminate potential pathogens and weed
seeds
(4)Contains one or more of the following: humus, enzymes, vitamins, natural
sugars, plant proteins, auxins, amino acids
(5)Contains an approved tackifier
(6)Contains zero ecotoxicity as per EPA 2021.0 in 48 hours
(7)Passes EPA 503 Metal Limits
(8)Passes 40 CFR 503 Class A for pathogen reduction
(9)Provides a homogeneous slurry mixture
(10)Contains 15 percent maximum moisture as per ASTM D7367, Standard Test
Method for Determining Water Holding Capacity of Fiber Mulches for Hydraulic Planting B.2 Mulch Provide hydraulic mulch meeting the following characteristics and requirements:
(1)Contains shredded wood paper fibers, natural fibers, or both containing no
germination or growth inhibiting factors
(2)Contains from 2.5 percent to 5.0 percent tackifier by weight premixed in the
bag
(3)Contains moisture content no greater than 15 percent at the time of delivery
(4)If washed on a No. 20 Sieve, at least 50 percent retained on the Sieve
(5)Functional for no greater than 3 months after application
B.3 Stabilized Fiber Matrix (SFM) Provide stabilized fiber matrix meeting the following requirements and characteristics:
(1)Premanufactured matrix containing defibrated organic fibers with at least one
of the following additives:
(a)Soil flocculants
(b)Crosslinked hydro-colloidal polymers
(c)5 percent Crosslinked tackifiers
(2)Contains 15 percent maximum moisture by weight
(3)Cure time within 48 hours
(4)Functional for at least of 3 months
B.4 Bonded Fiber Matrix (BFM) Provide bonded fiber matrix meeting the following requirements and characteristics:
(1)Composed of wood fibers or wood byproducts
(2)At least 25 percent of the fibers average 0.4 inches long and with at least
50 percent retained on No. 25 Sieve
(3)Contains 10 percent + 1 percent blended hydrocolloid crosslinked polymers
(4)Contains slow-release and agricultural based fertilizers or other proprietary
chemicals no greater than 2 percent by volume
(5)Binder and crosslinked polymers do not dissolve or disperse upon rewetting
(6)Contains moisture content no greater than 15 percent by weight
(7)Functional for at least 6 months
B.5 Reinforced Fiber Matrix (RFM) Provide fiber reinforced matrix composed of a chemical and mechanical matrix containing the following:
(1)Defibrated organic fibers
(2)Cross-linked insoluble or linear hydro-colloidal tackifiers
(3)Reinforcing natural or synthetic fibers
(4)Cure time within 2 hours
(5)Functional for at least 12 months
3884.3SAMPLING AND TESTING
Follow Schedule of Materials Control.
Hydraulic Erosion Control Products in other states
Minnesota revises spec sections through supplementals and new editions. We check this one every week and email you the day it changes. Free, no account.
Source: Minnesota Standard Specifications for Construction, 2025 Edition. Pages 1054–0 of 1,081.
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