I’m finally going back to putting information from over 3500 planning reports into an excel worksheet. I’d done this for tree numbers before, but I didn’t include site coverage, owner and developer names, arborist names, zoning changes or addresses.
I’ve spent the last two days combing through a subset of 27 reports from 2014, filling in as much data as I could. The most frustrating thing is figuring out the site coverage — how much of the lot is covered in buildings and pavement. Many developers fill in the blanks on the city-requested information, but others blatantly leave crucial information blank.
Site coverage is an important number; keeping coverage under 60%, a common maximum allowed by the city, allows drainage and keeps road runoff from polluting rivers, in addition to moderating temperatures during heat waves, and leaving room for trees to grow.
For the 10 developers who didn’t provide total site coverage estimates, I simply looked at their landscape design and used photoshop to count how many pixels were buildings or pavement, and how many were landscape.
The developers that didn’t report total site coverage had a reason: they reported an average of 33%, which was usually only the building area. When I added in pavement, I come up with an average of 72% total site coverage.
For example, this townhouse development in Cloverdale reported 40% coverage. From looking at their landscape plan, it’s obvious that it’s more than that. When I count pixels in photoshop, buildings and pavement take up 92% of the site. Their planning report says the limit is 45%. I guess they decided that zoning requirements are really flexible…when the zoning laws say maximum of 45%, it could mean just buildings if you want it to.
Six of these were townhouse developments; the rest were commercial. It makes sense that they wouldn’t want to draw attention to how much impermeable surfaces they were laying down.
But why would the city allow this sort of thing through so often? I don’t understand it.
—– a few hours later—–
What about this one? Report number 7913-0169-00 at 18699 24 Ave. An industrial building reporting 48.6% site coverage, in a zoning area with a maximum allowable site coverage of 60%. I double-checked, since it sounded too good to be true. Of course it wasn’t true. From this picture, I estimate 80% site coverage, even taking into account the apparently planted roof on the northeast of the building. Approved in July 2014.