Laserfiche WebLink
<br />., <br /> <br />WIllie we are able to provide these services, it is not the type of work we routinely do. <br />Therefore, it is possible that a company specializing in grouting could perform the work <br />at a lower cost. However, another consideration is that Western could perform the <br />work on a turn-key type basis which would include design, construction, quality control <br />testing and inspection and finalization. One of the advantages of the turn-key approach <br />is that, since we would have technical personnel on-site continuously for the grouting <br />work, much of the quality control inspection and testing costs are included in the <br />grouting costs. <br /> <br />11. Engineering, bidding assistance, quality control testing and inspection and finalization <br />costs are included in the above cost estimate. <br /> <br />12. The cost of potential additional investigations such as the geophysical and test drilling <br />programs previously described are not included in the cost. Since the existing <br />information on seepage characteristics is very limited, additional investigations would <br />provide a more secure basis on which to draw conclusions and formulate remediation <br />plans. However, it is also recognized that safety considerations, time constraints, and <br />cost considerations may not allow performance of any such investigations. <br /> <br />13. We have only estimated the cost for a grout curtain remediation approach for several <br />reasons: <br /> <br />a. Of the two options discussed in the Martin and Wood report (lining and grouting), <br />grouting would seem to have the greatest potential for success on the first attempt. <br /> <br />b. Of these two options, grouting is likely to be significantly more costly. At this point <br />(pursuing funding options on the basis of limited information) it would seem <br />prudent to consider the upper range of possible costs. <br /> <br />c. Until we have a chance to review existing records, examine the site and evaluate <br />possible options and related costs, it would be difficult to provide a meaningful cost <br />estimate for lining or any other option. <br /> <br />14. There may be other less costly options to address the problem. For example, there are <br />some polymer surface treatments that are being researched for their potential to seal <br />seepage areas. Another possibility might be to install additional instrumentation and <br />institute a comprehensive system of monitoring. For example, if critical areas of <br />potential piping could be identified, perhaps piezometers could be installed in such a <br />manner to target these critical areas and provide data to identifY trends of internal <br />embankment/foundation change. It will be important to evaluate a number of potential <br />options. <br />