The following measures for the preservation and protection of trees shall be required:
(A) Required protective measures. Measures required to protect significant trees and significant woodlands shall include:
(1) Installation of orange polyethylene laminate safety netting and metal stakes placed along the disturbance zone and around significant trees to be saved;
(2) Prevention of soil compaction or alteration of existing grades in critical root zones;
(3) Placement of utilities in common trenches outside of the critical root zone of significant trees, or use of tunneled installation;
(4) Prevention of change in soil chemistry due to concrete washout and leakage or spillage of toxic materials, such as fuel or paints;
(5) Calculation of critical root zones of all significant trees near disturbance zone and adherence to maximum 40% removal of critical root zone;
(6) Root pruning during construction along all disturbance zones shall be done by hand with a chainsaw or with a Vermeer designed for root sawing (machine will shatter roots);
(7) Tree stumps to be removed by grinding, not with a bulldozer, in all areas where root pruning does not occur;
(8) Natural ground cover (not sod) shall be maintained where clusters or areas of significant trees exist;
(9) No vehicles or equipment parking or driving out of the construction boundaries;
(B) Optional protective measures. Measures to protect significant trees and significant woodlands may include, but are not limited to:
(1) Installation of retaining walls to preserve trees;
(2) Reduced row and paved areas when it can be illustrated that such variances save trees;
(3) On-site layout of roads and house pads;
(4) Flaglots and other unconventional lot shapes when it can be illustrated that such variances save trees;
(5) Variable setbacks when it can be illustrated that such variances save trees;
(6) Larger lots in treed areas;
(7) Common washout pond for cement, paint etc., outside of woods;
(8) Basements dug with backhoe and material removed from site;
(9) Cement pumped in;
(10) Specified stock pile areas;
(11) Prioritize trees to be saved;
(12) PUD zoning.
(Ord. 125, passed 5-11-99)