Processed Glass Aggregate Specifications and Approved Uses by State - New England

Summary of Specifications and Approved Uses of Processed Glass Aggregate in New England - Environmental and Transportation Agencies

Wondering how the specifications and uses for processed glass aggregate (crushed recycled glass) vary from state to state in New England? Did you know that the requirements not only differ by state, but also by state agency?

The chart below summarizes the gradation and contamination requirements, as well as the approves uses, for processed glass aggregate for the environmental protection agency and the transportation agency for each of the New England states.

State	Environmental Agency - Graduation and Contamination Requirements	Environmental Agency - Approved Uses	Transportation Agency - Gradation and Contamination Requirements	Transportation Agency - Approved Uses	Mandatory Glass Recycling*
	Governs municipal and private use: including in municipal and private roads		Governs state use: including in state highways
MA	100% of PGA must pass 3/8" sieve PGA must consist of clean mixed color cullet with a maximum residual content (i.e., food, paper, etc.) of 5% by volume No glass products other than food or beverage containers (i.e., fluorescent lights, video screens, windowpanes, etc.)	Subgrade construction applications Subsoil drainage systems Substitute for conventional aggregate in asphalt or concrete Daily cover	100% of PGA must pass 3/8" sieve Maximum of 5% mass of the material may be produced from china dishes, ceramics, plate glass or other glass products Allowed at a maximum addition rate of 10% by mass provided any subbase material will not be exposed The material shall consist of recycled glass food or beverage containers free of debris such as paper, metals, fabrics, toxins, clay or loam	Structural fill Subbase material for roads	Yes
NH	100% of PGA shall pass a 1" sieve	Subbase material for roads, bedding material for pipes and fill around retaining walls and foundations Shall not be applied to ground surface and left uncovered as a final application; not approved as general fill If used in public works application, must meet specifications of town or governmental unit using it If used in private application, must meet specifications as determined by professional engineer or architect licensed in NH	100% of PGA must pass 3/8" sieve Up to 20% PGA may be used to replace road base gravel (20% PGA/80% gravel mix) Glass cullet shall meet requirements of AASHTO M318	Glass cullet base course blends shall be capped with standard specification base course materials before the traveling public can drive over the material Drainage Pipe bedding Structural fill Subbase material for roads	No
VT	95% of the material shall pass a 1” (25.0mm) sieve Not more than 3% of the material passing the No. 4 (4.75mm) sieve shall pass a No. 200 (0.075mm) sieve Material shall contain 5% or less by mass china dishes, ceramics or plate glass Material shall be less than 1% screw tops, plastic cap rings, or other contaminants	Base course, subbase layer and embankments for roadway, trails, parking lots and sidewalk applications Utility trench bedding and backfill applications Drainage applications Filter media for wastewater treatment systems	95% of the material shall pass a 1-inch (25.0 mm) sieve Not more than 3% of the material passing the No. 4 (4.75 mm) sieve shall pass a No. 200 (0.075 mm) sieve Materials used to produce PGA shall consist of recycled glass food or beverage containers Small amounts (less than 5% total) of china dishes, ceramics, plate (window or mirror) glass, or other glass products allowed in PGA PGA material shall not contain more than trace amounts of screw tops, plastic cap rings, or other contaminants Amounts of contaminants greater than 1% by weight shall be grounds for rejection of the entire PGA batch	Structural fill Subbase material for roads Drainage PGA subbase blends must be approved for use on the Project by the Engineer in writing prior to being placed on a Project. In-place blending of PGA with other materials is not permitted	Yes
CT	Crushed recycled glass may include glass food or beverage containers with less than 5%, by volume, of other solid waste material e.g. plastic, metal or paper Has been combined by processing source-separated recyclable solid waste at an intermediary processing facility Cannot be marked as cullet for remelt Must have components that measure not greater than 3/8” Must be virtually inert	Landfill cover Fill material including aggregate for asphalt or concrete or any other subgrade construction application in which the glass would serve as a substitute for sand or stone aggregate Glass material may not constitute greater than 10% by volume of clean fill	If glass is used in reclaimed waste, its individual particles shall be no larger than 1 inch and shall be thoroughly mixed with other embankment materials such that its content anywhere in the embankment shall not exceed 25% by weight Stockpiled reclaimed waste material containing no more than 25% of glass by weight and no more than 2% by weight of asphalt cement may be used for part or all borrow requirements If glass is used in bituminous concrete materials, crushed recycled container glass (CRCG) must: (1) not exceed 5% by weight of total aggregate; (2) contain no more than 1% by weight of contaminants such as paper, plastic and metal; and (3) 100% must be crushed to 3/8 of an inch or less	Embankment material as reclaimed waste To meet borrow requirements May be used in bituminous concrete mixtures for pavement subbase and base courses Engineer approval required	Yes
ME	No state specifications for PGA	N/A	No state specifications for PGA	N/A	No
RI	No state specifications for PGA	N/A	No state specifications for PGA	N/A	Yes