Monroe County Conservation District
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Spring ’17 MCCD Dirt and Gravel DSA Demo Day
 
Program Background 
In Fall of 2016, Tobyhanna Township placed nearly 900 tons of Driving Surface Aggregate (DSA) on Gordon Lane, a township owned road parallel to Interstate 80. DSA is a specified mixture of stone aggregate designed as a wearing course for gravel roads.  Unlike 2A, a commonly used driveway stone, which is actually a drainage aggregate, DSA contains more medium and fine particles which enables it to compact better.  DSA forms a hard driving surface similar to concrete, with benefits like reduced dust generation, reduced loss of fines from water transport, and longer maintenance intervals.  Unfortunately, the placement was done late in the season, and the material delivered was too wet, and was never able to dry properly.  This resulted in a rutted surface once winter hit.  The township added 2B stone to the top to stabilize the road over the winter.
 
Purpose and Process of the Demonstration 
In order to correct the rutting and remix the DSA in place, a power rake box (PRB, a.k.a. rock hound or Harley Rake) was employed to loosen and remix the upper surface of the aggregate.  First as much 2B as possible was removed with a loader.  Then the PRB was run, using caution not to remove the road crown.  The DSA was then re-compacted using the required 10 ton roller.  This process was repeated following the first run.  We received 0.2” of rain two days before the workshop, which provided moisture content necessary to compact the aggregate properly. 
 
The demonstration purpose was two-fold: to show the benefits and limitations of the PBR for maintaining DSA, and to determine if overly wetted aggregate could be repaired using the PRB.
 
Results 
The PRB was able to remove the top 3” of aggregate and remix it in place.  This was sufficient to remove the embedded ruts in the road surface.  The DSA compacted well in areas without excess 2B intermingled with the aggregate.  While the DSA surfaced areas were solid, the clusters of 2B, evident in the completed photos, will probably result in potholes when they pop out. Overall the surface is approximately 85% corrected.   If the 2B could have been more completely removed, which was made difficult by the underlying ruts, the surface may be 100% corrected.  We will continue to monitor the performance of the road and may employ a more substantial method next spring- a grader with a stinger blade, which will be able to cut more deeply, and turn the aggregate over, better diluting the excess 2B now mixed in with the surface layer.  Stay tuned for more.
 
Questions can be directed to John Motz, Resource Conservation Specialist at MCCD- 570-629-3060.
 
Special Thanks 
Thanks to the Townships of Tobyhanna and Middle Smithfield for the use of their equipment and operators. We had 15 participants from three municipalities, and the District Manager from MCCD in attendance. Funding was provided through the MCCD Dirt Gravel and Low Volume Road Program for the Demo Day.  
​
Spring ’17 MCCD Dirt and Gravel DSA Demo Day Media G
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Technical Section
Monday through Friday: 8:00a.m. - 4:30p.m.
Phone: (570)629-3060 • Fax: (570)629-3063
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Environmental Education Center
Monday through Friday: 8:00a.m. - 4:30p.m.
Some Saturdays 9a.m. - 1p.m.
Phone: (570)629-3061 • Fax: (570)629-3063
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  • Home
  • About Us
    • Directions/Facilities
    • Directors
    • Staff
    • 2022 Strategic Plan
    • Agendas/Meeting Minutes
    • Employment/Internships
  • Technical Services
    • Chapter 102 Stormwater Management
    • Chapter 102 Erosion & Sediment Control
    • Chapter 105 Waterways & Wetlands
    • Watershed Protection >
      • What is a Watershed?
      • Monroe County Watersheds
      • Stream Gages
      • Educator's Guide
      • Water Quality Study
    • Dirt & Gravel Low Volume Roads Program >
      • Environmentally Sensitive Maintenance(ESM)
      • D&G Projects
      • DGLVR Gallery
    • Clean Fill
    • Agriculture >
      • Agriculture Preservation Program
      • Erosion & Sediment Control
      • Manure Management
      • Resource Enhancement & Protection Program
    • Spotted Lanternfly
    • Forestry
    • Land Use Planning
    • Technical Assistance
    • NPDES Workshops
  • Education Services
    • Facilities >
      • Kettle Creek >
        • Nature Discovery Area
      • Tannersville Bog
      • Meesing Outdoor Site
    • Camps & Kettle Creek for Kids >
      • Conservation Camp
    • Special Events >
      • 2023 Photo Contest Winners
      • Art Gallery
      • Envirothons
      • Maple Sugaring
    • Programs >
      • Bog Walks
      • Public
      • Kayak and Canoe with KC
      • Yoga Sessions at KC
      • Schools >
        • Supplemental School Programs
      • Bus Trips
      • Speakers
      • Scouts
    • Birthday Parties
    • Media Gallery
    • Gift Shop
    • Becker Scholarship
    • Question Corner at KC
  • Calendar
  • Support Us
    • Kettle Creek Environmental Fund
    • Volunteer
  • Newsletter
  • Open Records Request
  • Links
  • Complaint Contacts