P709(03)-10: Mattamy Richmond Lands Subdivision Hydraulic Grade Line Analysis Analysis of Post-Development Impact on Van Gaal Drain Village of Richmond March 2010 Description of Files: Subdivision/MatRic1.* : SWMHYMO files for the Mattamy Richmond lands draining to Pond 1 (to the Van Gaal Drain) and Pond 2 (to the Jock River) ***************************************************************************************************** Van Gaal Spring/sp7bJFSAB.* : Spring SWMHYMO files for the drainage area to the Van Gaal Drain under post-development conditions, where the Mattamy Richmond Lands are removed from the pre-development drainage areas and replaced with outflow hydrographs from Ponds 1 and 2 generated using XPSWMM Van Gaal Spring/sp7aJOCKB.* : The same model as sp7bJFSAB.*, but uses time steps compatible with the Jock River SWMHYMO model ***************************************************************************************************** Van Gaal Summer/su6bJFSAB.* : Summer SWMHYMO files for the drainage area to the Van Gaal Drain under post-development conditions, where the Mattamy Richmond Lands are removed from the pre-development drainage areas and replaced with outflow hydrographs from Ponds 1 and 2 generated using XPSWMM Van Gaal Summer/su5aJOCKB.* : The same model as su6bJFSAB.*, but uses time steps compatible with the Jock River SWMHYMO model