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. The pJ4, conductivity, and turbidity met= will be cdibrated at a minimum at the beginning of each sampling day using commercially o 'biativn wM be checked to th=times during the day to ev4uaft dI4 POtentiaI dw the caMration is ddftg throughout the day. ,If instrument in the .field, tete ru rest , `ng ' g slExample calibration logs am inclucled in A 3sng of the was the instruments will be used in the same sex as a*calibration. 2. Depth to water win be m "err to sampuW, in =h well in Section 4»4.1 and recorded on the;Purge Ch2ractetization and Sample Log, The volume of groundwater in the we- 1=sing will be calmWed using the-following tions): 4w-inch welL 06tal Well Depth from the mark on the well casing {tfi) 13 0.653 gaYfL Prior to purging, tie- be%. -ad'. ablv baRer thar is alear~- enough to see gh_ Fcatur= such as in=iscible lays will be noted and mea=e& If` ; ' cible lay=-arc observed thevmn ill nm be purged prior to zamVjhj& 4_ The wa will then be purged using dtc purge -Due to thcr fact that the PunIPS must 1 purge from depths as as 70 to 80 feet ow gmund sutfac-,pcfrge rates purrange from 114 to t gallon pec ' utc- This,lst c rate does not appear to =Cced the recharge - mttes. of the ils. Purge water -wiff bre ` gcd to-&e ground (see Section 4-4.6)- Depth to water m crxt�will be y du&g purging- "I'he,tapose of measurements is to madtar cps a d=rcasce in groundwaar elevation is the pup rft will be s til c rate equals mcbarge rate) is acWevtd. ney of measurezuent willbe ix=e every fiye minutes initially decr=sing to ora hes r o. reached, lfequilib » t be be necesmy to a the wall to dryne= Purge' Itatil I= than 1 of the,o ' , volume of water r=ai in the welL Hand babg y be roquked to med d&objicdvc. Monitor 1.5 minutes to evaluate rtcharg*. Start saMpI4 collection ed the well or LIS bo i = the end of ` g- Collect VOWe Organics no later then two hours af ter P td&U actions=J measurements associateci with pW&Sa l cry on the a Chawtertziden md Sample 83tt4 11231 QR32 A-T fitly 14,200 2