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T . Well Development and Surveying, Ah6r the four monitoring wells are completed and the well seal has had sufficient time to set fat least 72 hours), they will be properly developed by repeated surging and pumping Each of the newly installed wellheads will be surveyed by a licensed surveyor. The sureyflt. will measure the elevation of the tap of well casing to the nearest 0.0 foot; referenced to An established bench );nark: E: Disposal. of R,insate and Development 'Water 'UV`aste water generated during decontamination procedures and well devei pn ent will be stoxed ' in Sgallon drams penclitg +disposal. Depending on the concentranoas of petrol hydrocarbflns fflund in ilrre newly"'installed wells, waste water may be discharged t4 land or sanatory sewersystem. For:the purpose of this cost estimate, it is assumed that all`waste will be'disposed of as anon MCRA hazardous liquid using a vacuum truck: 'Tam 3. bite Inv+estigatidi Report IT ll report the methods and fi Odin s associated with scope of world it# a Site Invest* F. Report: Itz addition tct a standarrd discussion of methods, the report wait include the folly . ► Site location snap and site plan; Map illustrating groundwater surface and gradient; Figures depicting extent of impacted soil and groundwater; .. Boring lags and crass sections, if appropriate; Tables summarizing laboratory results. Quarterly Groundwater Sampling Beginning at least 48 hours after well development and then quarterly thereafter, groundwater from the newly installed monitoring weds should be monitored and sampled. A. Groundwater Monitoring and Sampling On a quarterly basis,IT will monitor and sample the four newly installed wells. Each well will: be inspected, measured for depth to water, purged of at least three well volumes, and sampled using laboratory-supplied containers. 4