Laserfiche WebLink
__ 2 <br /> <br /> <br />es - 2 - November 1, 1988 <br />i6). The groundwater sampling scheme is as follows: Wells 1, lA, 18, 1C and 7 <br />are sampled yearly in September for depth to water and for the parameters <br />stated in Stipulation No. 1 to the renewed permit. Completion depths and <br />strata for all wells is contained in attached Table 2 from the 1986 Annual <br />Appendix 1 - Groundv+ater Data (fifteen pages) are all from the 1986 Annual <br />Hydrologic Report and are enclosed. These data generally show that water <br />levels and quality in wells down gradient from the mined area have not changed <br />significantly during and after mining. Refer to the original permit document <br />for previous water quality data (Willard Owens Report - Volume 2). Refer to <br />Exhibit C-2, Volume 2, Appendix C, for locations of monitoring wells. <br />Water quality data from 1Je11 7 (spoils completion well) indicate that the <br />spoils water is of generally the same type as surrounding area water but with <br />about half the Total Dissolved Solids as in water from the other sampled wells. <br />7). A copy of the Proof of Publication is enclosed. <br />8). Copies of ML RD required notifications including regular notifications of <br />inspection, the proposed decision proof of publication, and the Mined Land <br />Reclamation Board agenda page showing the publication of the proposed decision <br />are enclosed. There were no comments. <br />9). There were no requests for an informal hearing. <br />10). Spoil samples of the top 4' of material were obtained by Ch1LRD and <br />analyzed at ACZ, Inc. The six spoil samples were analyzed for pH, Electrical <br />Conductivity (EC ), and Sodium Adsorption Ration (SAR). Sample results are as <br />follows: <br />Sample T <br />i pH <br />T. 3 EC <br />X74 SAR <br />2 7.2 0.55 1.2 <br />3 7.4 2.47 8.5 <br />4 7.0 3.08 3.6 <br />5 7.2 2.35 2.1 <br />6 7.5 3.39 6.7 <br /> <br />verage <br />ange -i. - -'.5 <br />As you know, plant growth problems can result when pH values are less <br />than 5.0 or greater than 8.5, EC values are greater than 4.0 (for salt <br />sensitive plants) and SAR values are greater than 15. None of the spoil <br />samples from the Canadian Strip Mine would indicate that plant growth problems <br />would result from the spoil properties studied. <br />11). lJe agree that topsoil replacement depth is not an issue at this point, <br />but will be important at the time of Phase II bond release, <br />