For the purposes of this Division, a sufficient number of suitably located groundwater-monitoring wells are installed in respect of a storage system if there are enough wells, and the wells are placed in suitable locations, so as to enable (a) the detection of petroleum that may be lost from the storage system into any groundwater aquifer in the vicinity of the storage system; and(b) the identification of the local groundwater flow direction in any aquifer in the vicinity of the storage system.