Download - Montgomery County Yard Trim Compost Facility
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Montgomery County Yard Trim Compost Facility
Dickerson, MD
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Dickerson Compost Facility
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Operation of Facility
• Facility is owned by County• Operation is by contract with MES• Site sits on 117 acres• Composting is done on 48-acre asphalt pad• Composting began in 1984 with leaves only• Now composting leaves & grass• Cycle begins in Nov. with leaves, grass is added
in Spring, process is completed in Sept.• Material is screened sold in bags or bulk
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Grinding of Material at Transfer Station
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Windrow composting system is used
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Making of Windrows
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Scarabs are used to turn windrowed material at 140° F
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Screening of Material
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Bagging of Material
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Incoming Yard Trim
0
10,000
20,000
30,000
40,000
50,000
60,000
70,000
80,000
90,000
Fiscal Year
Ton
nage
Tons 31,848 34,097 46,652 58,545 61,997 59,100 59,800 60,400 59,643 63,634 81,131 78000
FY93 FY94 FY95 FY96 FY97 FY98 FY99 FY00 FY01 FY02 FY03 FY04 Est
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Leafgro Bulk sales
0
10,000
20,000
30,000
40,000
50,000
60,000
70,000
80,000FY94
FY95
FY96
FY97
FY98
FY99
FY00
FY01
FY02
FY03
FY04 EstCY 29,843 30,988 28,881 56,271 71,487 57,854 54,183 53,149 53891 35,000 55000
FY94 FY95 FY96 FY97 FY98 FY99 FY00 FY01 FY02 FY03 FY04 Est
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Bagged Leafgro to Distributors
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Reintroduction of ComPRO for lawns
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Environmental Controls
• National Pollutant Discharge Elimination (NPDES) Permit:
– Parameters - Biochemical Oxygen Demand (BOD) 100 mg/l– Total Suspended Solid (TSS)100
mg/l– pH 6-9
mg/l
• Permit allows discharge into streams when parameters are met
• The Water is usually used to irrigate rows in the summer
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Legal Controls
• SCA Agreement of Settlement & Compromise - 1996
Places restrictions on facility
• Limits materials to site to 77,000 tons per year• Prohibits expansion of facility• Limits days and hours of operation- M-F 7:30-4:30PM• County has to meet with SCA periodically and
prepare two reports a year
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County Facilities in Dickerson