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4 <br /> CAMBRIA <br /> well. If a PVC bailer or down-hole pump is used for groundwater purging, it shall be <br /> decontaminated before purging each well using soapy water consisting of Liqui-noxa" or <br /> AlconoxTm followed by a double rinse of clean tap water and then distilled water. If a. <br /> submersible pump with non-dedicated discharge tubing is used for groundwater purging, both the <br /> i inside and outside of pump and discharge tubing shall be decontaminated as described above r <br /> Sample Handling <br /> i <br /> Except for samples that will be tested in the field, or that require special handling or preservation, <br /> samples shall be stored in coolers chilled to 4° C for shipment to the analytical laboratory. t <br /> Samples shall be labeled, placed in protective foam sleeves or bubble wrap as needed, stored on <br /> crushed ice at or below 4° C, and submitted under chain-of-custody (COC)to the laboratory. The <br /> laboratory shall be notified of the sample shipment schedule and arrival time. Samples shall be <br /> shipped to the laboratory within a time frame to allow for extraction and analysis to be performed <br /> within the standard sample holding times. <br /> Sample labels shall be filled out using indelible ink and must contain the site name; field <br />{ identification number; the date, time, and location of sample collection; notation of the type of <br /> sample; identification of preservatives used; remarks; and the signature of the sampler. Field <br /> identification must be sufficient to allow easy cross-reference with the field datasheet. <br /> All samples submitted to the laboratory shall be accompanied b a COC record to ensure <br /> P Y P Y <br /> adequate documentation. One copy of the COC shall be kept in the QA/QC file and another copy <br />' shall be retained in the project file. Information on the COC shall consist of the project name and <br /> number; project location; sample numbers; sampler/recorder's signature; date and time of <br /> collection of each sample; sample type; analyses requested; name of person receiving the sample; <br /> and date of receipt of sample. 1 <br /> t <br /> i r <br /> I <br /> Laboratory-suPP lied trip blanks shall accompany the samples and be analyzed to check for cross- <br /> contamination, }a <br /> if requested by the project manager. <br /> Well Development <br /> Wells shall be developed using a combination of groundwater surging and extraction. Surging is <br /> performed to agitate the groundwater and dislodge fine sediments from the sand pack. After <br /> approximately ten minutes of surging, groundwater shall be extracted from the well using a <br /> bailer, pump and/or reverse air-lifting through a pipe to remove the sediments from the well. <br /> Alternating surging and extraction shall continue until the sediment volume in the groundwater <br /> (i.e. turbidity) is negligible, which typically requires extraction of approximately ten well-casing <br /> volumes of groundwater. Preliminary well development usually is performed during well <br /> installation prior to placing the sanitary surface seal to ensure sand pack stabilization. Well <br /> development that is performed after surface seal installation, should occur 72 hours after seal <br />{ installation to ensure that the cement has had adequate time to set. S <br /> t <br /> Waste Handling and Disposal <br /> E Groundwater extracted during development and sampling shall be stored onsite in sealed U.S. <br /> DOT H17 55-gallon drums. Each drum shall be labeled with the contents, date of generation, <br /> f + generator identification and consultant contact. <br /> HA-MGT IR Group Info\Report SON\Groundwater Monitoring and Sampling SOP.rtf <br /> Page 2 of 2 <br /> f � <br />