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-12- J. Operating Equipment Meeting Emission Requirements Operating equipment used on the proposed site premises should meet emission standards. Mr. Merian has a tendency to use very decrepit equipment on his project sites, i .e. his water truck, draglines, caterpillars and Euclids. K. Guarantee of Water Table Gravel quarry operations utilize large quantities of water for washing the gravel. If issued authorization under the proposed Permit to excavate and process gravel , Stockton Sand and Gravel should not be allowed to decrease the level of the water table. Stockton Sand and Gravel and the County would need to guarantee that the water table from which residential wells draw will not be decreased or depleted. L. Detailed Rehabilitation Plan The present rehabilitation plan prepared by Mr. Merian consists of four sentences and a site plan. Neither the site plan nor the written description are adequate. Because of the uneven contours resulting from excavation, large quantities of topsoil will be required to restore the grade. Mr. Merian must be required to replace topsoil to an adequate depth to maintain productive rangeland. No topsoil should be sold until all restoration is complete. Since Mr. Merian has not submitted an adequate plan for rehabilitation, the County should w -ite a detailed rehabilitation plan and make it a condition of the proposed Permit. The rehabil- itation plan should be very specific. The cost of such a County effort should be borne by Stockton Sand and Gravel . In response to concern from the Soil Conservation Service regarding re-seeding the rangeland to provide erosion protection and to restore the habitat, Mr. Merian commented that a single sprinkle was all that was necessary in ordor to bring up grassy groundcover adequate to prevent erosion. This is incorrect because in order to germinate native annual grasses several heavy applications of water are required. (Seeds contain germination inhibitors that must be leached away by large amounts of water before germination can occur. ) Mr. Merian seems to display very little knowledge of rehabilitation and restoration practices.