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noC within the scope and authority of the Construction Materials Act. However, the concern of <br />incompatibility of mining wish other planned land uses remains and will be presented by the <br />objectors to the Board for consideration at the scheduled hearing. <br />III. ISSUES RAISED BY THE OBJECTORS -AFTER INFORMAL CONFERENCE: <br />11. Groundwater Contamination (received from Pinnacle Pines LLC on Apri13, 2000) <br />"Groundwater studies conducted by Pinnacle's consultants have determined that a plume of <br />materials (DIINP, methylene chloride, chlorinated volatile organic compounds, pesticides, and <br />non-chlorinated hydrocarbons) crosses Pinnacle's property at depth and crosses below the <br />affected lands specified in the application. The depth of mining contemplated in the application <br />may well intersect the plume. The application discusses that mining will release groundwater ... <br />and this release of groundwater, if the plume is intersected, may in fact pose a significant health <br />risk through the interaction of groundwater with humans, or through the airborne release of <br />chemicals once the groundwater meets the air when it is routed across Old Brighton Road <br />(Exhibit G). Lafarge has not disclosed the results of groundwater studies of the land affected by <br />the application. Nothing that Pinnacle has seen in the application discusses this issue, treats the <br />subject of the plume, or discounts its potential risk to public health. If Lafazge has relevant <br />information in this regard, it should be required to submit such information" <br />Response -See response to Item 2 above. <br />12. Slope Stability (received from Pinnacle Pines LLC on April 3, 2000) <br />"The application discloses that the mining face will be "neazly vertical" and that upon <br />reclamation, the face will still have a 3: l slope. Pinnacle believes that the steepness of the <br />reclaimed faces, descending into a water storage facility, may well pose a safety risk from <br />landslides and slope failures to people who will become residents of the adjoining housing <br />development planned by Pinnacle. Lafarge should provide additional geotechnical information <br />regarding this instability prior to any approval of the application." <br />Response -See response for Items 3 & 7 above. <br />13. Additional Information Needed (received from Pinnacle Pines on Apri13, 2000) <br />"Pinnacle believes [he application does not adequately address th~ requirements of Rule 6.4 <br />