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d�osugtrates the et£tcuveiless of xn-field cleaning 1nOcedures to prevent cross-
<br /> AND C1A N OF-CUSTODY contamination.
<br /> gp.MPLE IDLIVTIFiCATIOI�Ion ber►vcen wells, all well
<br /> PROCEDURIIr-S To mssstizc the potential for u�o�� iboti to a Weil is either
<br /> SOP-4 snsurt saritpk utegnty. development and water sampling eq Pm a secotld precautiorsasY
<br /> Its ultimate steam cleaned or properly washed bet of I use est concentrations as
<br /> Sample tdetttlfncatiom and t$airi-of�the
<br /> procedures
<br /> W oy.� of lower to 4ugh
<br /> and doiurment sample p°s for analysis is labeled to Identify the measure, wells are sampled In
<br /> disposal F,ach sample container subrrutt=d a to the established by available previous wialyttcal data
<br /> 1e GOi►ectiori, a sample number unique
<br /> Ijob number, dam•tome of sample 1 any other P'rtment field roil to rise enalyuml laboratory
<br /> sample, any r�1e(s) of on-site personnel of be submi
<br /> observations also reoordod on the field exravauon or boring log. In tine event The water sarriples cane due w weekends or holidays), the
<br /> on the same day they are collected (e&, bm'Inal either on
<br /> samples are temporanly stored until the first apQortumty for su
<br /> £orris are used ion of the samplt from lune of
<br /> Chaurof-custo to record p g�pnteat,the Person with
<br /> collection to its amus! at the laboi'aLrnY �by signing the ice in s cooler,such a5 when in the field.or in a refnBera or WATER LEVEL
<br /> Samples wail relinquish them to the next Pers LEVELS USING A
<br /> custody of the the dale and time The samPle`cvr'vol LIQUID
<br /> �m_d__ y f°rrti(s) and noting preservation, MEASURING PROBE
<br /> wall verify sanniple integrity, nate vect olume me for TNIIICA'I'OR ORINTERFACE
<br /> Of icer at tht labaratotY coritainei{s) and ensure ade4 SOP-i2 id level gauging typically wcludes the measunng
<br /> confirm ccrilwrti.I m the proper Field equipment used for liqu product bailers) The field kit also
<br /> c nfir s probe(water level or interface)and a clean p les,and deionized water)to
<br /> unique laboratory log (buckets TSP,spray bort
<br /> les—11 be as ',be to numbers includes cleaning supplies equipment between wells
<br /> If these coiiditloiis are mot,the sgranalyse and reporting. g ned log be used in cleaning
<br /> Ches
<br /> numbers for identification
<br /> throughoutfarms and in the logally-requ
<br /> will be recorded an the chairnof'c)s►°dY le dcscn ti°n, date received, prior to measurement, the probe up is lowered into the wall until
<br /> rrTrlf hoxu(I e
<br /> book nuaintauscd in the laboratory T batter using tht previously established top of casing d a
<br /> other relevant mfonnabon will also be recorded or hal ard) is marked and a measuring
<br /> cheirt's name,and any wellhead vault) point the probe cord( y ine the dIVAncc
<br /> QUALITY A5SURANCE AND uoted in hundredths o€ a foot) h used to donee, urement is then
<br /> tape (g>� on the cord This of the
<br /> LABORATORY ANALYT Q b�em�probe end and the marking
<br /> CONTROL recorded on the ilquid-level data sheet as the "Measured Total Depth„
<br /> SOP-5 locates spikes, blanks spiked well
<br /> In addition to routine vestrumtnt calibration,rep d at method- re liquid levels,the probe is
<br /> blardcs, and ceitehed reference materials are routinely analyze nersts of the the interface probe to measle qoblect
<br /> precision and bias Additional comp° When necessary in using
<br /> uncles to monAor pr ounded to either the metal sto ayP bit°muesilents metalber
<br /> can be
<br /> specific fieri rancelQuatity Control Pr°gra"Include first e1ecti really&f
<br /> laboratory Quality Assn nearby When no ground is avaliable, repro
<br /> on in state and federal IaboratM acc{e
<br /> ditalientcertification obtained by cltppinB grouted lead to the handle of the interface probe case
<br /> I participatied In T!'it groundwater
<br /> Evaluation studies (WS and The Probe tip is then lowered Into the well and es w �e dobe is slowly
<br /> 2 paru
<br /> programs,
<br /> in both U S EPA P�tl a evaluation programs, p n Oscillating(�epin 1)tone'ndicates the p tone 1n o�tl1eC
<br /> Wp studies)and cuter-laborai°ry peri ne and pt�icsdsc Instrument raised unto,either the oscillating tone ceases or becomes a steady
<br /> Syaridard operating Procedures dcsmbmg route to-water(DTW)Indicator and the DTVI' measurement Is
<br /> 3 case,this is the depthhydrocarbons In flus case
<br /> niauitenance, procedures,and The steady tone Indicates fyaatusg hY This is the depth-t111-
<br /> 4
<br /> Action documentation p made accordusgly tone ceases
<br /> 4 "Out-of-Control"/Cerro �d chert reports the probe is slowly ratscd until the steady
<br /> of D�is recorded A corrected
<br /> 5 Muitrlevei review of raw data product(D7-p)indicator and the measurem y h drocarbons can be calculated by
<br /> PLING depth to groundwater To account for floating
<br /> GROUNDWATER PURGING AND SAM e. using the following formula
<br /> SOP-7 Sampling
<br /> each well is purged by evacuating a msnsmun of thrill
<br /> Prior to water'Same groundwater When required, purging CDTW=DTW-(SP G x LHT)
<br /> weed well-casing volumes of gen euro, conductivity or pH ected depth to groundwater
<br /> um of ten CDTW=Coir groundwater
<br /> continue until either the discharge water red values,and a maxim DTW=Measured depth to Ill' asolinc F 0 75.diesel =0 80
<br /> stabilize to within 10%of previously measured recovered or Ilse welt is basted SPG=Spccif c gmvlty unweathered g
<br /> sv�ed casing volumes of groundwater have been the water drocarbon thickness
<br /> groundwater sample should be collected when LHx=Measured liquid by
<br /> dry When ptacucal,the t of Its static level Field reviousl
<br /> level in the well recovers to at least �are
<br /> ,�co rrespondu ,�undwater elevation it the he depth groundwater or the
<br /> measurements,observations and Pro determined well reference elevation and either the dep
<br /> riless corrected depth to groundwater
<br /> The sarripllslg equiprnenl c�oriststs of a clean bailer, o is dead catesteel theawell Bated several times to
<br /> 1f the sampling System
<br /> may be PVC wilts a and raising the probe must be rep are recorded
<br /> pump with a"Teflon"bladd�� but the bladder p p volume The process of loweivtg and DTP measurements
<br /> then the bailer>s usually„galinple container type, preservati°n and ensure accurate measurements The DTW
<br /> Madder When
<br /> floating praducK is indicated by the probe's
<br /> polypropyleneon the liquid-level data sheet Mall through the product-water
<br /> depends on the intended analyses response, a product bailer is lowered p Y
<br /> ted Into each VOA vial tin such a manner that interface to confirm the Product on the water surface.product layers quite(thin on f
<br /> The groundwater sample is decanted secured to the top Of articularly m cases where the
<br /> 1 ,S quickly product thickness.P DTP is recorded on
<br /> there is no meniscus at the trop of the ural A cap q
<br /> the vial The veal is then invented and gently tapped to see if ser bubbles are Either this measurement ar Ilio dtfTeroxice between DTVV
<br /> and refrigerated for delivery, the data sheet as"product thickness"
<br /> present If none are present,the veal is labeled Label information tilt liqusd-kvtl
<br /> to the analytical laboratory avoid ce �ontammaurm of wells during to "duty'
<br /> 1 under strict chaei-of-Cu Identification number, identification number, In order to red nn the order of"clean, Y
<br /> should include a unique ssmp wells are measle ent equipment es
<br /> d the sampIces uutials (where sucmeasuremeh
<br /> i process,
<br /> date,tune,an l rinsed with deioiilzcd wattr
<br /> (where such sllt'ormstion is available) In addstion,all measle lotion of
<br /> a duplicate water sample may be collected from a cleaned with TSP or similar solution and thoroughly
<br /> wells,and at tilt comp
<br /> For quality control Purposes, and placed in the urements in reset
<br /> blank is prepared at the laboratoryand
<br /> In the cooler before use,between nlless
<br /> well When required a trip well sampies, the day's activities
<br /> transport cooler It Is labeled similar to the along with the groundwater
<br /> and is analyzed by the labpratory
<br /> during traslsp may be prepared in the field when sampling
<br /> samples 1n addrtoon afield blank aced �a Pump or bailer
<br /> equiplitent u not dedicatedThe field Washed,prior to use in the next well,
<br /> has been either steam cteaned Of properlyly The field blank analysis
<br /> and is analyzed along with the other samples
<br />
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