STA Certified Compost Plus TxDOT Testing

Our STA Certified Compost Plus TxDOT Testing package is specifically designed for compost manufacturers seeking compliance with both the US Composting Council (USCC) STA Program and Texas Department of Transportation (TxDOT) specifications. This package provides the rigorous testing required to meet these industry standards, ensuring your compost meets the needs of a wide range of applications, from soil amendments to erosion control.

What is STA Certified Compost?

Compost is defined as the product of controlled aerobic, biological decomposition of biodegradable materials. This process reduces pathogens and weed seed viability (per EPA 40 CFR 503 standards) and stabilizes carbon to benefit plant growth. STA Certified Compost is screened for optimal particle size, making it ideal for soil incorporation and plant health improvement.

TxDOT-Specific Testing

TxDOT has additional specifications for compost used in state-approved projects. This package ensures compliance with their unique requirements by including all STA tests and additional parameters specific to TxDOT guidelines. Beside each test result, TxDOT specifications are provided to verify compliance.

Related and Allowable Products:

The STA Program supports various compost-related products, including:

• Vermicompost/Worm Castings: Pre-composted feedstocks meeting EPA 40 CFR 503 standards.
• Digested Solids: Anaerobically digested materials composted post-digestion.
• Composted Mulch: Coarser compost for surface applications.
• Erosion Control Compost: Specialized compost for erosion control blankets, berms, and socks.
• Soil Remediation/Stormwater Management Compost: Used in environmental and stormwater applications.

For more details, visit the STA Program Requirements page.

Why Frequent Testing Matters:

Regular testing is critical to ensure product quality and compliance:

• Monthly Testing: For manufacturers producing over 17,501 wet tons/year.
• Bi-Monthly Testing: For manufacturers producing 6,201 to 17,500 wet tons/year.
• Quarterly Testing: For manufacturers producing under 6,200 wet tons/year.

Parameters Tested:

Our testing package includes:

Moisture	% Organic Matter	Total Nitrogen	Nitrate Nitrogen
Total Phosphorus	Total Potassium	Total Calcium	Total Magnesium
Total Sodium	Total Iron	Total Copper,	Total Manganese
Total Zinc	Sulfate as SO4	Boron	Chloride
Ammonia (NH4-N)	pH	C:N	Germination
Carbon Dioxide Evolution	Particle Size	Fecal Coliform	Total Coliform
Conductivity
Heavy Metals:	Lead	Molybdenum	Zinc
Cadmium	Copper	Selenium	Arsenic
Mercury	Nickel	Chromium

Pathogen Testing:

• Fecal Coliform:< 1000 MPN/gram of dry compost.
• Salmonella:< 3 MPN/4 grams of dry compost (both tests required in California).

Sample Submission Guidelines:

• Sample Size Required: Two 1-gallon Ziploc bags.
• Shipping Instructions: Ship samples overnight in an insulated container with ice packs.

Additional Information:

• Turnaround Time: 14 business days.
• Comprehensive Results: Includes detailed analysis and compliance data for both STA and TxDOT standards.

Why Choose This Test?

This testing package ensures that your compost meets the highest industry standards, providing confidence in its quality and suitability for both STA certification and TxDOT-approved projects. Whether you're targeting soil amendments, erosion control, or storm water management applications, this test provides the data you need to market your compost effectively.

Order your STA Certified Compost Plus TxDOT Testing package today and set your product apart in the marketplace!