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-g F-411111WRI <br /> a r?i' {� ?' .w'"NF i ✓ ..$• w xwdz. ~�` F.ty.� ;,k'"" - 1Z <br /> r �w b. i, ar?m L yF s s , Pr v <br /> k a L <br />�6 <br /> 6 <br /> development water is collected in labeled 55-gallon containers for temporary storage,and <br /> is then disposed of properly depending on analyucal results. 1'o assure that cross- <br /> contamination does not occur between wells during drilling and development,all <br /> development equipment will be cleaned using Alconox,and rinsed twice with distilled <br /> water. -nL the <br /> l be <br /> rese <br /> frSince,i ast 72 hours before development and he first bailing/sampling ievent. to settle <br /> for a <br /> GROUNDWATER PURGING AND SAMPLING <br /> Prior to groundwater sampling,each well is purged by evacuating a minimum of three <br /> well-casing volumes of groundwater or <br /> ou dil the er discharge <br /> hetn temperature, <br /> emper t r the well is <br /> conductivity and pH stabilize. The gr les will be collected after <br /> evacuated prior to bailing/pumping the required volume,samp <br /> approximately 80 percent cf the <br /> fin tial water level has been recovered,or within a two <br /> hour period,whichever <br /> Groundwater sampalle <br /> les to <br /> analyzed <br /> vials and n 1 hare ater ed bosdesto �The VOA p alrato re saree hilted liter <br /> volatile organic any N liter <br /> sealed with Teflon-lined lids,labeled, <br /> completely,leaving no headspace,and are capestate- <br /> and <br /> to a _ <br /> and stored tzardous meaterials testing laboratory.rated environment and �Purged water vered under chain-of-custody <br /> ts flab led and contained <br /> certified Ira <br /> pending receipt of laboratory results of groundwater samples. Disposal shall conform to <br /> applicable hazardous waste requirements, <br /> ANALYTICAL LABORATORY <br /> Califon ria,a <br /> Soil and grounldwzard°us materialses lzbo ory.be sent to BACE AAll soil sampltical of Windsor, <br /> s selected from the <br /> state-certified <br /> boring and gram niNater verr�tcat on analyses for les from underground tank lthe monitor wells will be eaks as described by <br /> recommended mum <br /> the California Regional Water Quality Control Baa nd The <br /> by EPA include <br /> Methods 8015 and <br /> petroleum hydrocarbons as gasoline and(TPH-g) <br /> 8020,respectively. Total lead,if required,will be analyzed by atomic absorption flame. <br /> Total recoverablepetroleum el and unknown hydrocarbons may ene,also st ddard solvent,aviation <br /> fuel(]P4),diesel <br /> WRITTEN REPORT <br /> The laboratory results will be evaluated in conjunction with previously collected data,and <br /> a technical report will be prepared and ya to the client who will be advised to <br /> submit copies of the reports to the appropriateg <br /> SCHEDULE. <br /> in oArtesian will <br /> project.eLaborattot;v analyseswithlwill take about five o teut two weeks of n wonting day sand fl proceed nal <br /> or, P 1 <br /> pared and submitted within about four�:-r�1:s of starting the drilling. <br /> report will be pre <br /> a` <br />