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Section 785.19 (d} Continued. ' (~ Environmental Mdnitoring Monitoring of acknowledged alluvial valley floors will be conducted as required by this Section and Sections 816.52 and 822.14. A system of five monitoring stations will be established at locations shown on Map 5, North Park Hydrology. The facilities at each of these stations will consist of a stream sample site, a shallow monitor well drilled and cased through the alluvium for ground water level measurement and sampling, and staff gages for measure- ment of stream stage. Vegetation, soil moisture, streamflow and alluvial permeability data will be collected at the time of instal- lation of each station. The facilities will be monitored monthly during high flow in the spring and quarterly at other times for the length of the mining and reclamation period. Agricultural produc- tion will be monitored by obtaining inventories of harvest yield after each growing season. Annual data reports will be submitted • throughout the banding period. Monitoring will be conducted to detect any toxic or harmful levels of water quality or quantity which could cause material damage to alluvial valley floors. (e){1) No permit or permit revision application for surface coal mining and reclamation operations on lands located west of the one hundredth meridian west longitude, shall be approved by the regulatory authority, unless the application demonstrates and the regulatory authority finds in writing, on the basis of information set forth in the application that-- (i) The proposed operations would not interrupt, discontinue, or pre- clude farming on an alluvial valley floor, unless the premining land use has been undeveloped range land which is not significant to farming on the alluvial valley floor, or unless the area of an affected alluvial .valley floor is small and provides, or may provide, negligible support for production of one or more farms; provided, however, this subpara- 785-42