Phase 1 - initial work:
Survey of pool-draining project area, before anything changes.
	P&E done for pool chamber, need to do for base of pitch beyond the sewer.
Review Gott's survey for Entrance to Main chamber
	Does all of his data look right? 
	Go through it and annotate his version with changes and improvements 
	His EE is noticably and visibly warped from the true elevaion, but maybe that's okay?

Decide approach to elevation/s
	The current East-West (0deg N) Elevation of the main route is perfectly usable, though significantly simplified 

	
Phase 2 - Surveying:


Phase 3 - Assembly and production:


Pase 4 - Finalisation:
Neaten up folders and documentation