Meeting: July  29, 2009

Participants: Kevin, Jeff, Hans, Brent, Cameron, John, Michael, Jerome, Lisa

Summary of Discussion: Basic review of  two catchment senarios

Scenario A: Tuesday Map

Pro's: 

most direct route of water to tank

utilizing natural low point in driveway

Minimal disturbance of utilities and native vegetation

greenhouse tank is lowest point on the property 

ties in with thermal mass of structure 

Con's: 

cost prohibitive? we need to find cost of asphalt cut? piping costs?

driveway disturbance

needs more noodling/egineering of how pipe meets new green house stem wall

tank underneath may be difficult to repair

Scenario B: Bud's Plan

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Pro's: 

utilizes natural drainage

only disturb native vegetation

cost effective

tanks all together

Con's:

disturbs native vegetation

going around the horn, longer run

cautious about utilities

loss through evaporation/run time

note: Wetland will be the same either option. We can decide where to locate wetland cell that will look good aesthetically and function well. 

other points raised during discussion:

Timing: what timing is best for soil cut/fill, tanks?,as builts to facilitate precautions for catchment tanks? Hans had a great suggestion of saying it is for back up truck  water delivery in case of drought. What would be the order of digging?

Labeling: it will be necessary to put potable water /non potable water for health department

Trampoline: Would it make sense to coordinate with earth works? Where would we like it located?

Tank suggestions: drivable tanks were concrete sprayable poly urea?/ or matrix systems. There are also custom tanks. A pre made self contained  tank is more cost in materials( cost/sq ft, tank itself) and is much less in labor.  An onsite tank with matrix or custom build is less in materials (  cost/sq ft) but more in labor. 

Drip lines and drainage catchment: would be important to line the ditches with beno mat or other liner under landscape so as not to let water penetrate. We may use some natural raincatching techniques on the south side of the driveway to utilize water in the landscape. we like to utilize drip lines to the south and north of main door for direct landscape use.

Keep it Simple: Jerome suggested keeping it simple with greenhouse catchment and landscape catchment separate. also we need to look at the water needs both long term short term.

ACTION STEPS:

1. Cross section of a ditch from john and cameron

2. Evo to get cameron current and projected landscape water usage

3. review two options for landscape catchment scenario A and B

4. goals break out  session tuesday with jeff, hans, kevin, lisa

5. john will send sketches 

6. lisa will post all options

7. all numbers estimates for projects need to be in by august 30th

Note: Brent, Kevin and Jeff spoke after this call

attached is ditch sketch from john during the meeting