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E I f r.l 1.4 onitorin Well Development If monitoring wells are installed, each monitoring well will be developed after construction by bailing with a dedicated, laboratory-cleaned tenon bailer until the water produced is relatively sediment-free or until measurements of pH,specific conductance,and temperature stabilize. If the well is bailed dry during ths dm!opment process, recharge rates will be recorded. No wator or chemicals will be introduced into the monitoring yells during well development. und--Water Sn Iln Following well development,a liquid sample will be collexted from each well with the same tenon bailer used to develop the well. Each sample will be appropriately labeled and s.ored on ice from the time of collection through the time of delivery to the laboratory. 1.6 Petroleum Product If free petroleum product is present in a well, the thickness of the prcduct layer will be measured by i I . collecting a sample in a transparent teflon bailer with a check valve at the bottom or by measurement "j using appropriate fluid-level sounding equipment. The sample will be transferred to an appropriate sample �-� container and se:`osequently submitted for fuel-fingerprint analysis at the laboratory. 2.1) QUALM Alq.VRANCE PLAN �.� This item describes the field and analytical procedures to be followed throughout the inveAgation. 2.1 General Sam lie Collection and Ilanctili�I'racedures Proper collection and handling are essential to ensure the quality of a sample. Each sample will be collected in a suitable container,preserved correctly for the intended analyses,and stored prior to analysis 'C for no longer than the maadmum allowable holding time. I --tails on the procedure for collection and handling of soil and groundwater samples to b-used on this project can be found in Section 1.0. 2.2 Sample Identification and Chain-or-Custoaly Procedures k Sample identification and chain-of-custody procedures ensure sample int;grity a,-,d document sample � possession from the time of collection to its ultimate disposal Eachsamplecontainer submitted for 3 — - analysis will have a label affixed to identify the job numocr,sampler,date and time of sample collection, --–- - ;---- -- and a sample number unique to that sample. This information in addition to a lescri tion of the sample, P 4 P � P } ' field measurements made,sampling methodology,nacres of on.site personnel,and any other pertinent field _ observations will be recorded on the borehole log or in the field records. All samples will be analyzed by a California State Certified Laboratory. x t a I, t = � l � £