| http://www.w3.org/ns/prov#value | - Work in this specialty may also require an electrical license per chapter 19.28 RCW and/or plumber certification per chapter 18.106 RCW.(55) Tanks and tank removal???A contractor in this specialty installs and/or removes fuel storage, grain and other types of tanks which have been or are to be used for dispensing gasoline, diesel fuel, waste oil, kerosene, propane or other chemicals.
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