mc carron v0.1 3 23-15
TRANSCRIPT
Open Windrow
Compost Operations
and Contamination IssuesGreg McCarron
MassRecycle R3 Conference
March 30, 2015
Topics
• Site overview
• Base operations
• Food operations, focus on contamination
• Screening results
Site Overview
• Sam White and Sons
– Middleboro (also in Medfield, Newton)
– Mulch and compost production for over 10 years
– 36 acres total
– 3 levels: compost; soil mixing; wood shredding
• SCS Involvement
– Design, permit, operate for composting
– General Permit for food; <105 tons per week
– Operations start: October 1, 2013; yard only
– Limited food deliveries to date
Incoming Material; Land Area
• 2013-2014 Operations
– Leaves, grass, horse manure, cranberry waste
– Level 1: 3.0 acres, including perimeter access
– Average 2 batches per windrow slot
– 16,000 cy total, incoming material
Turner Operations
• Process rate: 3000 cy per hour
– Komptech: 4600 cy per hour
– Dependent on windrow size and condition
• Fuel rate: 8 gallons per hour
Food Operations
• Incoming food bunker
• Mixer truck
• Issue: plastic contamination
• Focus on one load: received in September
2014 and screened in March 2015
Screening
• McCloskey 6/21 trommel screen (barrel is 6
feet in diameter X 21 feet in length)
• First half is ¾-inch and the second half is ½-
inch
• Food windrow screened on Tuesday, March
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