Engineering 308 small research project. Update on three sustainable sites at the Potawot Health Village in Arcata, Ca.

1. Potawot’s
Pine resin pavement,
Stormwater treatment pond,
& Swales

3. Pine resin Pavement
Instead of applying conventional asphalt to
create walkways, Potawot chose to implement
pine resin pavement in order to ease the
potential impact on the land.

4. Update
+Durable
-Cracks and vegetation growing through the
walkway
-Sink holes
• Overall, the pavement is like that of other
materials, it does it's job well but can get
rundown.

8. Stormwater treatment pond
Part of a larger water treatment system at
Potawot, the pond treats 100% of the water
that is channeled into the system.
The water comes from the parking lot &
building runoff from storms.

9. Update
+Vegetation increase
+ Increase in healthiness of wetland
ecosystem
-Decrease in accessibility
• Overall the increase in vegetation has
made it slightly more difficult to access
drains for maintenance.

12. Swales
• Channel storm water directly into the
treatment pond.
• Water travels both above the ground
surface and below.
• Uses gravity to transport water
• Connected by culverts & forms a system to
channel runoff into the treatment pond.

13. Update
+ Continued success in diverting storm water
and recreating a wetland habitat.
- biomass buildup
• Overall, the swales seemed to function well
at preventing flooding and reducing runoff.

14. Swales