Checkout the following link. LARR stands for City of LA Research Report. There should be a number of manufacturers whose products have been approved for below grade water proofing installations. Feel free to email me at dhunter@dpw.lacounty.gov if you need more info. I am affiliated with LA County's Building & Safety Division so I can provide a little technical direction to help you navigate the City's permit process. I am an LS too!
http://netinfo.ladbs.org/rreports.nsf/M ... Expand=1#1
Retaining Wall waterproofing
- land butcher
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