EA204 Environmental Technology

1
EA204 Environmental Technology

• Stormwater Management
• Lot Grading Easements

2
Lot Drainage Scenarios

• lot above street level
• lot at street level
• lot below street level
• (see course notes for details)

3
Lot Drainage
4
General Grading Rules

• all surfaces minimum 2 slope to prevent ponding
• grade lot to run surface water toward street
  whenever possible
• always drain water away from building foundation
• easements needed if lot drains to back

5
General Grading Rules

• grade front of house to run to street
• no more than 4 backyards can drain into a swale
  between houses
• no more than 8 backyards can drain into a swale
  running to street
• no more than 10 backyards can share a common
  swale without a catchbasin

6
Lot Grading

• Subdivisions cannot receive approval for
  construction without a grading plan
• municipalities will not assume the roads and
  right-of-ways in new subdivisions without proper
  grading

7
Easements

• a right-of-way reserved for a specific purpose on
  private property

8
Types of Easements

• stormwater system
• sanitary system
• telephone
• hydro
• natural gas
• cable

9
Purpose of Easements

• to ensure access for maintenance and proper
  function
• to shorten the path and reduce the capital cost
  for installation