| http://www.w3.org/ns/prov#value | - Which one is related to Mean Sea Level?How can I find out where a sewer pipe or other utilities are located?What is the 1991.35 epoch on the Horizontal Data Sheet all about?How do I establish the Mean High Water line?How do I purchase "surplus property from the County?NAVD 88 or NGVD 29, what is the difference between them?Where can I find out where there is "surplus property in the County?Ho
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