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INC _ AEGIS ENVIRONMEN`�AL, OR INTERF'AC'E 'PROBE STANDARD OPERATINGI7IAOCLEVYu'D8 UB ING VTATER�LL'VL�L RE; KEpSURING LIQ SOP-12 ically includes ,- id•-level gauging tYPight filters) Field equipment used for lila the measuring probe (water-level or interface) , to be duct bailer{s) . The field kit nd rleianiz d water) eaning and ie TSP, spray battles, wells. supplies (buckets, i ment between used in cleaning the equ P until the probe tip is lowered into the oflcasting the previously established top-of-casting to measure1Qen using it touches bottom.robe crd (ar halyard) is marked and an measuring (TOC) point, the P hundredths of a foot) is used to determine the tag (g robe end and the marking on the cord. This e (graduated in hu distance betweer, the P .zid-level data sheet as the measurement is then recorded an the lig depth to water (ATW) • levels, the probe When using the interface probe to measure liquidpipe or rounded to When either ground l is oavail available, is first electrically grounded clipping the g another metal ©b7Ded e handle of the interface probe casfc. After grounding reproducible measurements can be obt is fittedwith a light filter lead to th the tap of the well casing operation of the probe, ht does not interfere with the into to insure that suiechanisms. The probe ti:p is An losceillat1 g the probe's opticalthe groundwater. The Probe is the well and submerged in robe is in water. (beeping) tone indicates that the p tone ceases or becomes this is the depth--ta-water slowly raised untilI nitehither case, accordingly- The steady a steady tone. measurement is made accordnasey�the probe i5 indicator and the DTV? hydrocarbons- in this th-to- tone indicates floa_inq y tone ceases. This de made slowly raised until thptoredand the DTP product (DTP) accordingly. eated and raising the probe must be rand DTP The process of lowering The DTV,i ensure accurate measurements• When Several times to id leVel data shaeat product the probe's response, measurements are recorded on the he floating product is indicate t �boygh the product-water interface to bailer is lowered partially and as further indication roeiuct on the water surface, where the product layer confirm the P a articularly in of product thick -ss, A •t quite thin. This measurement is recorded on the data sheet a5 is qu product thickness (PT) • the liquiof are measured in the order In In order to avoi�cr�¢�essnt wells ion of wells during level measuremen ��g ,where such information is availableo t1clean" to "dirty � equipment is cleaned with TSP etweenion addition, all measurement equ P and thoroughly rinsed with deionized water before use,