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Antonia K. J. Vorster <br /> -3 13 June 1988 <br /> Well Installation <br /> The well installation discussion does not mention how the type of <br /> sand or screen size will be determined. The determination should <br /> be made in the field or based on preliminary exploratory work so <br /> that the sand and screen used are as representative of the actual <br /> conditions as possible. <br /> Soil Sample Collection <br /> The proposed soil sampling calls for logging the boreholes by <br /> collecting samples 1 . 5 foot intervals during the construction of <br /> each monitoring well . Chemical analysis is proposed only 5 foot depth sample from each borehole, p p Y for the <br /> Continuous logging or at least logging at all changes in <br /> lithology as well as the 5 foot intervals <br /> , will more accurate description of the local hydrogeolo y. A a much <br /> analysis should be done at ever change as well not A chemical <br /> Y <br /> uppermost 5 feet. More thorough to g Just the <br /> g logging and chemical analysis <br /> will allow for a more accurate assessment of what, if any, <br /> additional work is needed and how to proceed with that work. <br /> Water Sample Collection <br /> The plan states that the pH, temperature <br /> and conductivity will <br /> be measured at the end of well purging only. The pH <br /> temperature <br /> and conductivity should be measured from the start <br /> Of well purging and continue until these parameters have <br /> stabilized and at least 3 well volumes have been extracted. The <br /> remainder of the water sampling plan appears to be acceptable. <br /> Report Preparation <br /> The proposed final report should be adequate as long as the <br /> modifications are incorporated into the work plan and the results <br /> included in the report. The final report should include a <br /> summarization and tabulated data in the main body of the report. <br /> Triple E could include the resu <br /> this report also. lts of the domestic well survey in <br /> '� , . - ..�-L:�.. ._. ,.... '� .:.!;�'�� :�:�-sem. ,-::• ... ., _.._ r.: <br />