Below are
two short video clips of the parking lot area at the rear of 113
Platinum Drive. An area that was directly above our red barn.
These were
taken during, light to moderate rain showers.
Unknown at the time.
The drainage from the parking lot area, that is south of the fire hydrant,
traveled to a drop inlet that possessed a six inch
common roof drain outlet.
The six inch drop inlet was actually the outlet from both
109 and 113 Platinum Drive's roof drain system.
In August of 2007; Platinum Properties would remove said
visible 6" outlet and place it underground, hidden in
between two new visible drop inlets.
This
particular parking lot area was receiving all the
drainage from:
* The
total rear parking lot areas of buildings 109 and
113 Platinum Drive.
* The
parking lot area area south of the fire hydrant, adjacent to 113
Platinum Drive.
* The
complete roof drainage of both buildings 109 and 113 Platinum Drive.
All the above mentioned drainage was being funneled into
the property, at this sink area location
The rough
outline is the area of the slip on our property. It is below the Developer's parking lot area, shown in the video above.
The new
structure below is the one mentioned earlier with the compactable
fill.
Bear in
mind; the area that the new building sits on was composed of
compactable fill that was brought in by large tandem dump truck from
two other Bridgeport residential developments. The cost of this aspect
of site preparation was around $15,000.
This is the reason the
area held up so well in regard to the massive drainage that Platinum
Properties was dispensing into our property, above the red barn area.
Implementation of the French Drain System
During
the excavation for the Horner Brothers Designed, drain system, the
excavator encountered a natural bench, (bedrock), when placing the
drainage system;
The
French drainage system was placed
directly on top of this bedrock, (the best possible circumstance for a
French drain).
The drain system stayed on top of the bedrock until it
veered on
the southern side of the barn area to get a proper drop level for the
drainage that traveled through the French drain.
An estimate, without core drilling, is the
bedrock depth back into the hill is at least 24', taking into account
the position of the barn.
The
existence of the bedrock is the reason the slip area had a dipped look
to it, (as noted earlier, by HR Marsh), and the reason the barn was
not affected. The barn and the road exists over bedrock. The road
passes the barn and curves down hill. The barn was built 38 years ago. The road existed long
before that.
