SG BUNKER® System

Industrial-scale CASP performance. GORE® Cover certified. Designed for space-limited, compliance-driven, high-throughput facilities.

The SG BUNKER® System is a robust, high-capacity Covered Aerated Static Pile (CASP) composting system tailored for municipal, industrial, and commercial operators managing large volumes of organic waste. 

Using the industry-proven GORE® Cover and proprietary SG COMPOST CONTROL™ System, this composting system delivers exceptional emissions control, pathogen reduction, excellent stormwater/leachate control, and operational savings — without heavy infrastructure or intensive labor. 

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High Volume. High Performance.

  • High Throughput

    Can handle 5,000 - 500,000 tons/year efficiently within a compact footprint

  • Low Odor & Emissions

    Odor reduction 90-95% (Odor emission study)

    VOC emission: US/Cal: > 95% thus California Compliant for 80% (acc. to Rule 1133.3, Rule 4565, Rule 4566 & BACT)

  • Rapid Pathogen Reduction

    Achieves EPA Part 503 rule compliance using outdoor piles. Supports Class A biosolids composting.

  • Labor & Energy Efficient

    Positive aeration replaces turning; no biofilters needed

  • Fully Integrated Monitoring

    SG COMPOST CONTROL™ System allows remote control, compliance tracking, and optimization

  • All-Weather Operation

    Encapsulated technology is not influenced by weather or climate and does not need an enclosed building.

SG COMPOST CONTROL™ System Integration

Precision You Can Monitor

SG BUNKER® technology includes full integration with the SG COMPOST CONTROL™ System, our proprietary, in-house-developed control system built for real-time composting optimization

  • Cloud-based platform

  • Live data access from any device

  • Automated alerts & analytics

  • Easy export for compliance reporting

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Environmental & Regulatory Compliance

Built for the Most Stringent Standards

SG Bunker® systems consistently meet or exceed:

California’s SB 1383 organics mandates
South Coast AQMD Rule 1133.2 & Rule 4565
EPA 40 CFR Part 503 (PFRP) for Class A compost
Local air, water, and zoning regulations
See Our Performance Data
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By diverting organic waste from landfills, SG BUNKER® Systems help customers mitigate methane emissions and create a path to circular economy outcomes through high-quality compost production.

Real - World Results

Proven at Scale

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DSNY - Staten Island, NY

  • 16-unit SG BUNKER® system
  • 60,000+ tons/year processed
  • Produces Big Apple Compost®
  • Urban air quality compliance achieved
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Maryland Environmental Services - Prince George’s County, MD

  • Expanded from pilot to regional hub
  • Multiple industry awards
  • Facility recognized for stormwater excellence
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A1 Organics - Eaton, CO

  • Colorado’s largest organics processor
  • Handles food waste, yard trimmings, and more
  • Operational savings + emissions reductions verified
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Build a Scalable, Sustainable Composting System That Works

Let’s design a composting facility that delivers on compliance, cost savings, and environmental impact.

Download SG BUNKER® System Product Sheet