PERMFILE103937 - Laserfiche WebLink

Home Browse Search

Section 785. 19 (e) Continued. at each OSM Regional Office, and at the central office of State regula- tory authorities located west of the 100th meridian, west longitude. Copies of the publication may also be obtained by writing to the above locations. A copy of this publication will also be on file for public inspection at the Federal Register Library, 1100 L Street N. W., Washington, D.C. Incorporation by reference provisions approved by the Director of the Federal Register on February 7, 1979. The Director's approval of this incorporation by reference expires on .Tuly 1, 1980. (11) Potential increases in the concentration of total dissolved solids of waters supplied to an alluvial valley floor in excess of those incor- porated by reference in paragraph (i) shall not be allowed unless the applicant demonstrates, through testing related to the production of crops grown in the locality, that the proposed operations will not cause increases that will result in crop yield decreases. • (iii) For types of vegetation not listed in Maas and Hoffman as speci- fied by the regulatory authority, based upon consideration of observed correlation between total disssolved solid concentrations in water and crop yield declines, taking into account the accuracy of the correla- tions. (iv) Potential increases in the average depth to water saturated zones (during the growing season) located within the root zone of the alluvial valley floor that would reduce the amount of subirrigation land compared to pre-mining conditions; and (v) Potential decreases in surface flows that would reduce the amount of irrigable land compared to pre-mining conditions; and (vi) Potential changes in the surface or ground water systems that reduce the area available to agriculture as a result of flooding or increased saturation of the root zone. 785-45