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1 ` <br /> 1 RESNA Industnes Inc ZAMA <br /> Quality Assurancc/Qualuy Control Plan <br /> ReyLsed November I992 <br /> ' To reduce the potential for cross contamination between wells, the monitorings will take place <br /> in order from the least to most contaminated, if known Wells containing free product will be <br /> monitored last Between each well monitoring the equipment will be decontaminated. <br /> Water Ievel data collected from the wells will be used to develop a groundwater contour map <br /> for the project site Groundwater flow will be estimated to be perpendicular to equipotential <br /> ' lines drawn on the map. <br /> ' 10.0 WELL DEVELOPMENT PROTOCOL <br /> Groundwater monitoring wells will be surged and developed prior to setting the surface seal. <br /> Approximately 10 times the volume of water in the casing will be withdrawn if possible. Casing <br /> volumes will be calculated in the following manner- <br /> VOLUME OF SCHEDULE 40 PVC PIPE <br /> ' Diameter (inches) I D (inches) Vonjfeet <br /> Gal/li2 2067 4 4 026 0 <br /> ' VOLUME OF OPEN BOREHOLE AND ANNULAR SPACE BETWEEN CASING AND HOLE <br /> IF' Hole Volume/Linear Feet of Hole Nominal Volume/Linear Feet of <br /> Diameter Casing Annular Space` <br /> Diameter <br /> (inches) <br /> Gallons Cubic Feet (inches) Gallons Cubic Feet <br /> 725 2 14 029 2 1.91 <br /> 0.26 <br /> 825 278 037 2 255 0.34 <br /> 1025 429 057 2 406 054 <br /> 1025 429 057 4 346 046 <br /> ' 1225 6 13 082 4 530 0.71 <br /> Annular volumes wrll be multiplied by 30%to account for porosity of filter pack <br /> QAQCIM pMi. 8 <br />