placement strategies

After a series of trials and tests to decide on placements of my interventions, I have a current strategy for tackling distance across the urban fabric:

Each circle on the diagram is an earthquake termed an 'event' by the eqc (each has a different insurance claims date), the distance between them is a scaled version of time since the first earthquake. 10m is 1 day.

This is 52 places. I'm not suggesting dramatic interventions in every place, earthquakes not as significant may only have small-scale coding, like a texture change or inscription, points will all reference the Feb 22nd radius or 4 spaces (darkest line) as the most significant. The larger red circles are the ones I will focus on. They are 7 spaces of great variety including a playground in a residential area, a river/restaurant/built-up areas, Hagley Park open space near river, a car park in an industrial run-down area, a historical church (now to be demolished) and a residential area.

See google map: http://maps.google.com/maps/myplaces?vpsrc=0&ctz=-720&abauth=f8f4da70:8xCgu-sOJVsAKdeYfcTISwXZu3I&vps=1&jsv=365b&sll=37.0625,-95.677068&sspn=23.875,57.630033&ei=RN1uTvTQK4iSkQX9j8WIDA&num=10