Building Resilient Communities With Low Impact Development (LID) & Innovative Zoning

1. Horsley Witten Group, Inc.
Building Resilient Communities:
With Low Impact Development (LID)
& Innovative Zoning
Scott Horsley
Sandwich Boston Providence Newburyport

2. Horsley Witten Group, Inc.

3. Horsley Witten Group, Inc.

4. Horsley Witten Group, Inc.

5. Horsley Witten Group, Inc.

6. Horsley Witten Group, Inc.

7. Horsley Witten Group, Inc.

8. Horsley Witten Group, Inc.

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.

10. Horsley Witten Group, Inc.
Horsley Witten

11. Horsley Witten Group, Inc.Preserved Historic Sandwich Road

12. Horsley Witten Group, Inc.
Horsley Witten

13. Horsley Witten Group, Inc.

14. Horsley Witten Group, Inc.

15. Horsley Witten Group, Inc.
Water Table Map With
Groundwater Flow Arrows

16. Horsley Witten Group, Inc.
Zone II

17. Horsley Witten Group, Inc.
WWTP
Zone II