Dataset Request: Tree planting data

I am seeking information on the survival rates of trees (e.g., how many survive to 1, 5, 10 years):
1. planted by the county along streets
2. planted in parks, at schools and other county facilities
3. planted to meet the requirements of the Ches Bay Ordinance
4. planted by the Tree Canopy Fund (I understand that this dataset is being compiled)

The primary goal of the County's Urban Forest Master Plan is to improve the county's urban forest canopy coverage. To that end, Arlington spends thousands of dollars each year to plant trees along streets, in parks and at County facilities, and via the Tree Canopy Fund, in private yards. To comply with the Chesapeake Bay Preservation Ordinance, Arlington requires replanting of trees at a certain replacement rate (with the goal of achieving a determined % canopy coverage) by developers and homeowners.
There appear to be no available data on the success of these programs in restoring the tree canopy.

I plan to use it to figure out how interested members of the community can work with County staff to improve efforts to stem the drastic loss of the tree County's tree canopy

This dataset contains public trees planted and removed by the Department of Parks and Recreation. The County is working to collect and publish data regarding the location of the planted and removed trees. The dataset also includes all trees removed, preserved and planted by private entities to meet the requirements of the Chesapeake Bay Ordinance and acreage and % coverage of tree canopy.
Published - Trees Planted and Removed and Tree Canopy