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_ ." '4=-" '.a'4•.s :r .::amu "_y ar., _ y y V:e <br /> - -s-- r tom. s` r. :;: _ ny�•q.. ,� dye �` ,.r,��, ��w-..aa�+c -..yTa-aa w r a -�`y., - � ''d' <br /> s _w �.-4`.`. ... _�' '� .` _- ,,, ,3� �. ,i € 5"Y� _ s"r ui - �" .sa,•� .� - ,A` _Y.. `s ��"....7 <br /> ut1,1 ba tlslcant.-ninatod prior to cOr �ssaCing cixillin�l At t,ncts <br /> bola. W01.1 construction mntariol: will btu cltjon-)d an <br /> nncsasannry, prior to 1nt:t0lA4t.i0n- <br /> Equipment and wall mAt Orin, decontamination will bo <br /> conductrad on an imparunobla ourfeca and all dt_acolitnrninotion <br /> effluent wtll be contained. All uurfacos rOfrsteo oclapnor. <br /> will be thoroughly decanta:nirsatad uning rook for air <br /> 'Tho oquipmant wi1.1 <br /> be placed on a drying <br /> drying. The decontamination water Mill neared in containnrn <br /> cortifiad for hnzardoun motcarials storage and dieponad of in <br /> an approved mar�nor. <br /> Sample Cquipment to be used for posticidou and organic <br /> analysis will be warahud in a rtionphosrphate dotergfollowod ent nby <br /> or oquivalent) and ringed with top water <br /> doionized water and finally with acetone. <br /> if the equipsncaht <br /> in for metals analysis, tho initial rinse will <br /> and bo condu ted <br /> with 0.1 N nitric acid followed bywater <br /> water. <br /> 7.0 Field Equipment Calibration and Maintenance <br /> Thefallowing mansuring t-luipment may bo used during the <br /> Remedial investigation. Equipment is grouped by <br /> activity. calibration procedures and frequency are listed <br /> for each Piece- <br /> Soil Sail ilorin� and WQ11 Dinnsiona-Stool and costed clothtape. Calibration: none. <br /> water Laurel Heacauremnnts in Wali:;- Steel rats as correctiors on <br /> Calib:tion: manufacturer saupped tamps <br /> will be applied as applicable for field conditions. <br /> Electrical well sounders. Calibration: check against stool <br /> surveyor's tape. <br /> Organic vapors- Photoionization detector. Calibration: <br /> Doily fie d Ca ibration using a inobutylene standard an per <br /> manufacturers instructions. <br /> Groundwater pH `' ctsurament- Digital nd 10 will be calibratH motor. ion: <br /> standard pli solutionF of 4, <br /> daily field calibration according to manufacturers <br /> instructions. <br /> Electrical Conductivit - Electrical conductivity mtor' <br /> Calibration: factory-calibratorannually <br /> d l y andciperiodioally <br /> calibrated against laboratory p pa <br /> redarcalibration <br /> solution. <br /> Water Tc+mgnratura- Mercury or digital thermometers. <br /> Calibration factory-calibrated once. <br />