Soilworks products are the industry’s top standard due to our insistence on creating high performance soil stabilization and dust control products that stand up to rigorous testing – both in the lab and in the field. Our commitment to quality and performance has led to our involvement and testing in hundreds of real-world situations. The following library of reports, presentations, specifications, approvals and other similar documents provide you, our customer, the transparency and dependable assurance that is expected from Soilworks.
Organic Materials Utilization for Construction Activities that Protect US Waters
Using Compost to Improve Stormwater Management & Erosion Control on Roadsides
Roundtable & Living Field Demonstrations
Retzer Nature Center, Waukesha WI EPA Region 5
September 13, 2007
Dwayne Stenlund, MSc., CPESC, CPRM Minnesota Department of Transportation
– MNDOT 3890
– State Statute 7035
– 1988: 1st occurrence in Spec book
– 1996: Assigned to solve compost problems
– 2005: Current
– Grade 1: use in turf establishment, nutrient rich type derived from the decomposition of poultry or animal manures with a texture similar to a highly organic soil.
– Grade 2: use in landscape planting medium, humus rich type derived from the decomposition of leaves and yard wastes or animal and poultry manure with a texture similar to shredded peat
– Testing by U of M for P, K, Kjeldahl N, ASTM D2016 oven drying method
– Loss on ignition
– Solvita test
– No smell, reheating, identifiable materials
– Process verify fecal coliform, salmonella spp.
– Filter Log, Type Wood Chip
– Filter Log, Type Metal Trap
– Designer Soils
– Erosion control
– Storm Water Quality
(2105) TOPSOIL BORROW – MODIFIED
S-26 This work consists of placing and cultivating topsoil in accordance the appropriate Mn/DOT Standard Specifications, the Plans, and the following:
S-26.1 Topsoil Borrow-Modified (LV) shall consist of a mixture of 1/3 Premium Topsoil Borrow adhering to the requirements Mn/DOT 3877.2C and 1/3 Grade 2 Compost adhering to the requirements of Mn/DOT 3890 and 1/3 Sand adhering to the requirements of Mn/DOT 3149.2(k), blended on a volume basis. The mixture must be blended before being spread on the worksite. A sample shall be submitted to the Engineer for approval before the material is brought to the worksite.
S-26.2 Unload and store all materials in a manner so as to protect until placed.
S-26.3 Place six inches (6”) of soil and deep cultivate into the existing subgrade to a minimum of 300 mm (12 inches). Operations shall not result in soil compaction due to excessively wet soil conditions (field capacity or wetter) or improper methods. To minimize soil compaction, the Contractor shall use a spading machine to loosen and till the soil.
S-26.4 METHOD OF MEASUREMENT AND BASIS OF PAYMENT
The select topsoil borrow modified will be measured by the Cubic Yard (LV) of soil furnished and installed as specified, and measured by loose volume. Payment will be made under Item 2105.607 (Topsoil Borrow Modified (LV)) at the Contract Bid Price per cubic yard (LV), which will be compensation in full for delivering, placing, and all costs involved.
This specification covers filter logs used for slowing and filtering storm water runoff, and other water encountered on the Project.
Filter logs shall conform to the requirements of the following types, as specified in the Contract.
C Type Compost Log
Compost Log shall consist of a blend of 30-40% weed free compost as per 3890 Grade 2 and 60-70% partially decomposed wood chips. The compost/wood blend material shall pass a 51 mm (2 inches) sieve with a minimum of 70% retained on the 10 mm (3/8 inch) sieve, in accordance with TMECC 02.02-B, “Sample Sieving for Aggregate Size Classification”. The compost/wood chip blend shall be pneumatically shot into a geotextile cylindrical bag. The geotextile bag shall consist of a knitted material with openings of 10 mm (3/8 inches) and contain the compost/wood chip material while not limiting water infiltration. The encased compost shall form a cylindrical log that is a maximum of 55 m (180 feet) and approximately 200 mm (8 inches) in diameter.
2573.540 Filter Log, Type (1) meter (linear foot)
S-xxx (2575) Compost Grouting
This work shall consist of furnishing and injecting a water permeable compost erosion control system into riprap to remove soil particles from water moving off site into adjacent waterways or storm water drainage systems and to facilitate the establishment of vegetative cover in accordance with the applicable Mn/DOT Standard Specifications and the following:
—————————————————— S-xxx.2 INSTALLATION
Compost used for grouting shall be pneumatically applied with blower equipment in a non-compacted layer to fill voids of riprap, fractured bedrock or other hard armor to a minimum of 2 inches depth, or as directed by the Project Engineer.
Compost Grout application for erosion control will be integrated with a sediment control program, and may be applied in concert with Compost Logs or other sediment control methods shown in the plan. The Compost Grout may be used to blend in the riprap or compost log edges to the existing slope grade. Approximately three quarters of the riprap void depth shall have the
fertilizer application, with the remaining one-forth topdress lift to have the seed, at rates per acre indicated in the plan.
Compost Grout Cont.
Contractor will supply ample evidence showing this amount of material has been effectively placed (i.e., truck load tickets).
Contractor is required to be a certified Filtrexx Installer as determined by Filtrexx International, LLC (440-926-8041). Certification shall be considered current if appropriate identification is shown during time of bid or at time of application.
The following contractors are considered certified installers:
Windscapes Express blower Service, Dave Johnson 651-455-3993 Valley Creek, Wendi Bertelson 651-458-0778
Quickscapes, Pete Ven Housen 262-742-2006 MnLand, Mark Jefferies 952-446-1740
S-xxx.3 MEASUREMENT AND PAYMENT
Compost Grouting will be measured by the area furnished and acceptably installed. Payment will be made under Item 2575.604 (Compost Grouting) at the Contract bid price per square meter [square yard], which shall be compensation in full for all labor, materials, equipment and other incidentals necessary to complete the work as specified, including the cost of maintenance if specified in the plan.
The provisions of Mn/DOT 1903 are modified to the extent that the Department will not make a price adjustment in the event of increased or decreased quantities.
Table 2. Example Compost Blanket Depths for Various Rainfall Rates
Annual Rainfall/ Flow Rate
Total Precipitation (Rainfall Erosivity Index)
Compost Blanket Depth (Vegetated Surface)
Compost Blanket Depth (Unvegetated Surface)
1 – 25 in.
(20 – 90)
1 in. – 1½ in. (25
– 37.5 mm)
26 – 50 in.
(91 – 200)
¾ – 1 in. (19 – 25
1½ in – 2 in. (37 – 50 mm)
1 – 2 in. (25 – 50
2 – 4 in. (50 –
Erosion Control Compost Blanket
Planting Bed Control
Rock Log Compost Log
Culvert End Protection
Organics and Chemical Amendment Utilization
Slash Mulch w/ Gorilla-Snot®
Metal Trap Log
Concrete Floc Log
Selected Project Examples
Storm Water Retrofits
Silver Creek Cliff Trail Project
July 13, 2006
Fall 2006 TH13 Slope Failure Reconstruction
May 11 2007 Installation
May 25, really, really rained
TH41 Bridge Reconstruction
TH316 Shoulder Repairs
TH494 Rill Repairs
Th55-3, and more steep slopes
I35E Lexington Ave Bridge
TH7 St Bonifacius
TH494 Bailey Avenue Bridge
TH61 North Shore
TH36 Bayport Wetland Construction
Compost Retrofit Sponges
Stormwater Retrofit 1
Retrofit 2: Sag Point Sediment Capture
Bass Creek Stormwater Quality Retrofit
Compost filter berms
Compost Logs or Bags
Median Planting Details
Cottage Grove Park & Ride
Storm water compost gabion living wall system
2c. Filter-berm Basins
Future Today: Value Added Engineering
– Metal Trapping
– Nutrient Trapping
– Concrete slurry management
– Living Walls
New methods of application
Oil Trap Logs
Heavy Metal Trap Log (lead, mercury, copper, nickel, zinc)
Concrete Washout Filtrexx Filter RingsTM
Concrete Slurry Management
Living Wall Technology
Hydrocopmpost of Bison Manure feedstorm
No Limit to Imagination
– Clean out when ½ full
– Gravity dewater