摘要: |
Q: I am a specifications engineer for the Roadway Design Division at the Oklahoma Department of Transportation. I am in the process of updating some of our stormwater control standards. One of these is the concrete washout system. In all or most of the standards and specifications I've read online from other state DOTs, not one seems to go into detail as to the specification or minimum criteria needed for the "plastic liner." There are phrases such as "minimum of 10 mil thick" and "impermeable and leak-proof," etc., but I don't see anything that would refer to a specification or other federal agency's (EPA, ASTM, AASHTO, etc.) document.. |