1. Horsley Witten Group, Inc.
Building Resilient Communities:
With Low Impact Development (LID)
& Innovative Zoning
Scott Horsley
Sandwich Boston Providence Newburyport
9. Horsley Witten Group, Inc.
Nitrogen Loading Reductions
Kingman Yacht Center
Location Septic Systems (lbs
N/yr)1
Wastewater
Treatment (lbs N/yr)2
Nitrogen Reduction
(lbs N/yr)
PHASE 1
Project Site3 70 54 -16
Kingman Yacht Ctr 1,020 146 -874
SUBTOTAL PHASE 1 1,090 200 -890
PHASE 2
Cedar Point 52 Homes 1,841 263 -1,578
TOTAL 2,931 463 -2,468
1Nitrogen load calculated at 35 ppm for septic systems.
2Nitrogen load calculated at 5 ppm for advanced wastewater treatment.
3Site currently has two houses with six bedrooms on septic systems generating 70 lbs N/yr; would be
replaced with 32 bedrooms on advanced treatment, generating 54 lbs N/yr.