Preliminary Design

System Components

• About 15,750 Linear Feet of 8-inch through 12-inch PVC Gravity Sewer
• About 20,750 Linear Feet of 1.5 through 3-inch Low Pressure Sewer
• 1 Submersible Pumping Station
• About 7,500 Linear Feet of 8-inch PVC Force Main
• Estimated 474 Users
• About one-half of Users will have Privately Owned and Maintained Low-Pressure Sewerage Pump System

Preliminary Design

• Topographic Survey
  • Aerial Survey
    • Ground Control Survey and Aerial Flight
    • Data Processing
• Ground Survey
  • Differential Leveling for Benchmarks and Plan Check
  • Acquire Sill Elevations
  • Acquire Utility Information
• Subsurface Investigation
  • About 185 Locations
  • Preclearing Locations to 6' depth
  • Borings
• On-site Disposal Systems
  • Coordinate with the Board of Health to Obtain Records
  • Based on Existing Records
  • Incorporate into the Contract Drawings
• Cultural Resource Evaluation
  • Archaeological Investigations in two phases
    • Research
    • Field Survey
  • Performed in Accordance with Federal and Mass Historical Commission Rules and Regulations
  • Incorporate the Results and Construction Requirements into the Contract Documents
• Update Preliminary System Configuration
  • Update Profiles Showing Gravity Sewer and Pressure Sewer
  • Update Quantities
• Capacity Analysis
  • Tonset Road
  • Uncle Harvey’s Pond
  • Crystal Lake
  • Pilgrim Lake
• Update Project Cost Estimate