The CDOT site represented an active transportation infrastructure project with more demanding conditions than typical residential developments. Hercules Eco Blocks™ were installed along trickle channels and stream banks to evaluate their performance against straw wattles — one of CDOT’s standard sediment control products. Over an eight-month monitoring period, data was compared against straw wattles for non-compliance, replacement rates, and overall lifecycle performance to determine suitability for long-term roadway applications.
500 units (~2,000 ft) were deployed along trickle channels and stream banks. After eight months, 50 blocks (10%) were damaged — primarily from heavy equipment. Straw wattle would have required full replacement multiple times.
Photo: CDOT Application Example
An estimate of the life cycle cost at the CDOT project was also done between the Hercules Eco Block™ and straw wattle (SCL), and is compared below. Conditions at the CDOT site are typically rougher on control measures compared to home-building sites.
The estimate represents a comparison of 500 feet of control measures between Hercules Eco Block™ and straw wattle, assuming a 10‐month duration and based on assumed maintenance and replacement costs.
Although Hercules has a higher initial cost, its durability results in lower replacement costs over time compared to straw wattle. The life cycle cost of Hercules Eco Block™ would equal the cost of straw wattle approximately eight months into the project.
The Eco Block™ required no trenching or staking, reducing tools and labor. Crews noted fast installation, reusability, and improved site appearance.
Photo: Typical Corner Application
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