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s <br /> B. Soil moisture around the perimeter of the impoundment and at the <br /> maximum depth of the impoundment [Health and Safety Code Section <br /> 25208.8( i )]. Samples should be obtained during both the wet and dry <br /> seasons of the year. ' ® <br /> 1.. Method of sampling,'- sample locations, dates of sampling, and <br /> -A "rationale <br /> 2. Methods and rationale for determining soil moisture <br /> 3. Discussion of soil moisture <br /> C. Background soil chemistry in an upgradient .area that has not been <br /> affected by any seepage from the surface impoundment and which is in an <br /> area that is hydrogeologically similar to that underlying the surface <br /> impoundment [Health and Safety Code Setion 25208.8(j)] <br /> 1. Method of sampling, sample iodations; dates of sampling, and <br /> rationale <br /> 2. Identification of any upgradient soil sampling locations that have <br /> been affected by seepage from the impoundment <br /> 3: Relationship of the hydrogeologic environment at the upgradient <br /> sampling location with that underlying the impoundment <br /> 4. Discussion of background soil chemistry including presence of those <br /> constituents discharged into the surface impoundment or any other <br /> pollutants.. <br /> X. EXISTING MONITORING SYSTEMS <br /> A. - <br /> Exisio ground water and vad_ose zone-f storngs jeora <br /> t <br /> o etect cha e.. a � ' s n ng Troia the 1mipoun mant <br /> ori S <br /> Fe da -Se ctidn 2 2 )8.8( = _ _ <br /> 1 Leca tl ns 'of,"all .,monitoring f6cifities win respect to the <br /> imound.men <br /> I- <br /> -2. _Design data and specifications (including all applicable logs an <br /> $drawings) fog all monitoring installations <br /> 3.1,.,_Rationale far° se. lecting th particulartypePIIZA e of monitoring"'� <br /> .� <br /> `facility in- use <br /> 4. Metho � f i natal l ati on of monitor ng bac,l,'ti es ' <br /> r_ <br /> 5 Method of del o meat nel udI n <br /> , length' of. time of level opmen )of <br /> each ground dater -monitoring installation, <br /> - -µ � <br /> -9- <br />