Where should I store propane tanks to ensure both safety and compliance with regulations? Is it advisable to keep them indoors, or is outdoor storage more suitable? Considering the flammable nature of propane, does the location of storage play a critical role in minimizing potential hazards? What factors should be taken into account, such as proximity to ignition sources or exposure to extreme weather conditions? Are there specific guidelines that recommend certain distances from structures or areas frequented by people? Moreover, what impact does ventilation have on how and where I should store these tanks? Should they be positioned upright, or is it acceptable for them to lie horizontally? In terms of accessibility, how can one balance easy access for refilling with the imperative of maintaining safety standards? Lastly, are there any state or local regulations that dictate best practices for the storage of propane tanks that one should consider?