POOR LEGIBILITY

ONE OR MORE PAGES IN THIS DOCUMENT ARE DIFFICULT TO READDUE TO THE QUALITY OF THE ORIGINAL

SFUND RECORDS CTR

209595412/84/99 09:15 BLM MIN MGMT D1U -> LRS UEGPlS NO 895

DEC- 2-98 WED 11:58 AH APEX L A N D F I L L FAI MO. V U ^ b H J U Z b 'r. j

I Proposed Groundwater. Monitoring Plan

Sunrise Mountain LandfillClark County, Nevada

II

Prepared for

| Republic Silver State Disposal Service

iNovember 24,1998

I

CH2MIHILLa Hunon Osnlra Dt+vw, BuSta 200

Santa AM. CA 82707

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IIII•i1

Contents

•L

2.

a.

4.

5.

6.

Tab

i2

Flgi

i2

1.1 Objectives of five Subsurface bwt»tig*tian...~-.~ ~..~..-~ —.jjt Site CottdiUooi— -•-.• -~»~««~-"*~-**~««~~'*"*4"**"""""~«*t**"— ""'•••• ~~"~"**~~*

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Groundwata Simple Analytial Methods, Containers, Volumes, PreservationHrfdJngTlm/w— .- . ..,„...,__, , ,^^ ...(.."r..,. ,_ . , „ . „„„ , . . , . , . .

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Locaticns of Landfill And Offrit* WellaLocations far Monltairvg Well Looadoni

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ay: bi_nDEC- 2-98 WED 11:5S AM APEI LAKDFILL

nuni uiu -» LHS UEGPISKU.

NO.895r. a

1. Introduction

w''

This Crtnmdwater Monitoring Plan for the Sunrise Mountain Landfill in Clark County,Nevada, has been prepared for Republic Silver State Disposal Service (R&DS). The SunriseMountain Landfill la a dosed municipal landfill that is located on property owned by the -<JK••* •' 'ifcS. Bureau of Land Management (ELM). The property was leased for the purpose ot alandfill by dark County and w*» operated under contract with CUrk County by DUMPCO,a subsidiary of RSSDS. The Sunrise Mountain Landfill w.«« etoa^ uyaaaotdancflwittijhe 7GLosuxB-JSari dated April 14,1994. Figure I shows the location of the Sunrise Mountain

1 .1 Objectives of the Subsurface InvestigationKSSDS b eondueting B fidd tnvcstSgaHfin. of groundwater quality adjacent to the SunriseMountain landfill (Landfill) u pert of A cooperative effort to access the potential impact of a

rsstigstianare: -"l>

tfafividtdtyoffhelaxuiolJ.

to make an initialgroofldttreter quaHty.

ttrt of the potential Impacts of the Landfill on regional

• Complete a brief 4tour aquifer teat or ahig teat of Hvoo/ ftie monitoring wells toestimate tha hydraulkomductMty of the in-dtu geologic fozmatiCEn tn which the wen*

f« Collect and analyze a sample of groundwater from each new well for Appendix Iconstants.^— c^^*r-^'<^*>

1.2 Site ConditionsThe Sunriae Mountain Landfill is located east of Las Vegas, Nevada at the end of VegasValley Drive. The total area of the land leased from BLMIs 720 acres.

The landfill Is located on the eastern edge of Las Vegaa Valley, immediately south ofFrenchman Canyon. The uppermost pardon of the Landfill is located within (he canyondirectly east of Frenchman Mountain, however the majority of the LandflU is located on thelarge alluvial fan that originates at the mouth of the canyon and spreads out into theadjacent villey. Elevations range from 2,275 to 1,900 feet abovu mean sea level (MSL).

The climate in La* Vegv VaDey in semiarid with a mean annual precipitation ofappnndmatery 43 Inches. The annual rainfall is normally concentrated in four or fivestorms per year, with the majority of these storms having high intensity and short duration.

VI

DEC- 2-Suy:ib jji_n n jN ribMI D1 u

WSD 11:59 AM APEX LANDFILLLHb

rJO. 895r. o

iMTKBUCIW

GeologyThe site is mosdy underlain by alluvial sediments consisting of * surfldal 4 to 6 foot (ft)layer of loose sand and gravel material underlain by more consolidated gravel and cobblesin a rile and fine sand matrix to a depth of about 30 feet below ground surface (ft bgo).Interlayered within the coarse and fine grained deposits are 5 to JO-iMhlck beds ofcemented &and and gravel At about 20 to 30 ft bgs, fine-grained cUyaione. sUtstone, andsandstone deposits of the Muddy Greek Formation occur. Tha fine-grained deposits of theMuddy Creek Fonnatkm underlie the southern portion of the landfill.

The Sunrise Mountain Landfill lies on the boundary between alluvial valley £H sediments ofThe

I property, north of me fault is underlain by reddish'brawn urdatone bedrock and Hghl<olored liinestane-doJamlbt The center portion of theupper site canyon and lower eastern slopes are underlain by the sandstorje white steepupper aide slopes MB underlain by Umeatone. The sandstone arid limestone are separatedfrom afiovial deposfti to the aoufh by a steep fault along the base of Frenchman Mountain.

1JL2Groundwater is present at an estimated depth of approzhnatriylfiOtoZSOftbgaatmesouthern end western property boundary of the landfilL aj^ to reported to occur in fiieMuddy Creek Fonnation,LandfflL Ae hydraulic gmdient In the vtdrdtjr of the Sunrise Mountain Landfill U to thewest and fiouthweat towaids the Laa Vegas Wash. Enuaon (1986) estimated an averagelinear groundwater velocity of 1 to 10 feet per year within the Muddy Creek Forma tionbased on e hydraulic conductivity of 10* to 1(H cm/sec, a hydraulic gradient of 1004, andan effective porosrty of 30 percent. Tbe hydraulic conductivity value used was estimatedfrom* well completed wtdunAe Muddy Creek Fantwtton, Smiles west of theLandfUL The.

tyber«afctt» alow recovery of previously existing Wefl B at the Sunrise Mountain Landfill.

1iS Qroundwater QualityGroundwater quality to fre southwest of fee Sunrise Mountain Landfill tn the vlciniry of (heLaa Vegas Wash U poor. The Total Dissolved Solids (TDS) content of wells LG-M, LG-1S4,L&223, and 1X^224 ranged from 3404 to 13/M4o /L In 1«5 (Emcon, 1986), Acampleofgroundwater from Well B at the Landfill contained 3684 mg/I TDS.

During September 1998, groundwater samples were collected at existing grouftdwater weDsand at a spring located along the fault southeast of the landfill. No organic compoundswere detected in groundwater or spring samples, or in leachatesampljw collected from thelandfill TDS concentrations detected in groundwater collected from existing wdb andsprings during the recent sampling episode are illustrated In Rgurel.

Wdls T/1223 and LG224, located Approximately 2 miles south of the landfill were sampledon September 18 and 22. 19M, respectively, by Converse Consultants West. The sampleswere analyzed for volatile organic compounds (VOCs), select Inorganics, and total dissolvedsolids (TDS). A water sample was also coQected on October 1, 1998 from a water tank used

03:ib BUM MIN mGMT D1U

DEC- 2-98 WED 12:00 PH APEX LANDFILLLHS UEGfiS

ikl NO. NO.895r. /

ha BtoM water from a well operated by Nevada Ready Mia;. The well is lootedApprooctanatctylmilnweatbf ftelandBD. No VOCa were detected in the sample. .

A sample was also collected from an existing spring along the Sunri« Mountain LandfillFault No VOCa were detected tn the aample. The Southern Nevada Water Authority hashypothesized that leachate from the landfill could potentially travel along the fault andsurface at spring! along the fault This spring was sampled to test that hypothesis. Becauseno VOCs were detected In the sample from the spring, there la no evidence that a release has

• - - - • *— ii. m «M»MJM*»V » v L,f \ ^ . /nugntcci to roe spring. ^14* m^-^° tfr^J*^ • \

>A K**tft *1* sample was collected from the l^n^M| on September 22,199B> Trds water saznplfirepresented ncr&ce water fitat flowed Into the munidpal solid wagte end then back intochnvneidttetolocaUaederodanctfaeuitaeewaterdrafau^ No VOCa were

C06

12/04/38 09:15 BUM MIN flGMT D1U -. LflS UEGRS

DEC- 2-98 WED 12:00 Pl i A P E X L A N D F I L L FAX NO, NO.895

2. Scope of Field Investigation

ThB proposed scope of work forthU field investigation is as follow*

• lMtaflfourdflwngradlentmanltc*mgwellaa^eloGB to the waste as practicable.

• Ir»e&lw2moiUtDringwdlsur^diei\toftheSu^canyon directly east of Frenchman Mountain and drilled to the depth of bedrock only.

• Complete an aquifer or slug teat at two of the well* to provide an estimate of bvdtuhydraulic conductivity

tff ftampie« from eadv completed monitoring v^

'- «*«t-.

Table2pfcaerta tbepiopceedrequtBtfeg analysia/and eaayle cofleetien and Itccratery

resBiatwUlpeThe foDowtng aeetlons describe the field and analyticBl mBthoda/prfollowed during the field investigation.

2.1 Well Locations and Depthsgrmmdwrter mrmitaringnigBa wig lag ii t^niyt Antin\g{nMont nf f^g Cii^fiP" M

Landfill near fte Landfill property boundary. This number of wefla win provide (he dataneeded to make aa initial assessment of the potential impute from the landfill to regkmd£ii)uiulwutcr>Mountain Landfill wittun the valley eaat of Frenchman Mountain. If difficulty bencountered in completing an adequate upgradientwen, a aecc irpgcsdlent well mayinstalled. An attcitptwil] be made to mstaUeai^v^ screen &cic« the wa^ Thelequired wefl depths at the landfill boundary have been estimated to range fromapproadmatdy2ZOftbgito295ftbg». Hgure 2 shows the locations a/ progroundwater mantering locations. Table 1 presents a summary of the pdepths.

d well

The location and depths of wells were selected baaed on foe following criteria: <

,1. Groimdw»tCTflcr*rfrcmeiel«ndfllJlatonwwe8tanaSo«thirwdata provided In me Kmcan(1986} report. These water level* were consistent with ^addlttonal water level data obtained from fhe Soulhem Nevada Water Authority "j.(SNWA).

2. Well locations were sited withinAe property limits of the Landfill. Locating the wellson Landfill property grady simplifies aite access for drilling and future monitoring.

,"

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40-

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12/04/^8

DEC- 2-S09'-15 BLM NIN MGMT DIU -* LRS UEGflS

WED 12:01 PM APEI LANDFILL -AX NO. 7026443028i\-J- ,1

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i In general, wdls ware located adjacent to surface washes at^Waton^ drainage dtannela.The rationale foe these locations is that thejvaahea may represent preferential pathwaysfor the lateral migration of leachate. If it U being generated at the Landfill. The wellswere no* located directly within me washes due to risk of the well being inundated andcontaminated with surface water, or damaged due to the potential for high surface Sowduring high intensity ram/aU events.

4. Wells will be completed to a depth that is approximately 60 to 70 feel deeper man theestimated elevation of the regional groundwater table based on water level data.obtained from the Southern Nevada Water Authority (5NWA), as summarized in Table1, A 40-foot well screen wfllbe completed within the Muddy Creek Formation acrossthe Water table. j>p mlm«tely fifl te 7H fe^t

deeper than that estimated from fhe depth to water to account for me uncertainty in the^.depm to water. A 40-foot well screen i* proposed due to me anticipated difficulty In ,estimating the water table deration during drilling. ^ojl^^-r 1

TABU1.i-ej*

Oraund

WaftNumter

Ovortten(hsl)'

EstimatedDtpttito

BflfttttaflCM) OiDMdwcferW ffMQrg Bftrfivm

CsflratedOtplhtf

AM)[«M»V«" fS,

to70

1

2

a

4

6

e

1866

187ft

1620

1fl72

fiMO

2400

1730

1790

1730

1740

unknown

tee145

180

02

cnknowi

unknown

220

eos2SO

2S£

BO

»

DowrgradtorewBl

Dmiyridudl w0

D»»nuiaJam»efl;

Ifoendant *oO

(a) Oroun<fiwtora»««fc>(wfrtww1*5^

Wafl toekflara ihOMn en attached R0Lin 2.

etowow

cL

2.2 Use of BLM Data to Assist In Well LocationsAvailable boring logs from Emecn (1986) and interpretations included In A FrdmtburyEZedrfeoJ Ra&Mh/ Surwy qf 0* Sttariae Mountain LfndfUl (BLM, NAKSC, August 19,1998)were evaluated to determine U monitoring well lorations could be specified that targetedpotential permeable subsurface pathwsys. Specific targets could not be Identified, therefore,the downgradient weQ locations were selected to provide a broad coverage downeradlent ofthe Landfill.

/ t o U

US: 15 bLM njN riGMT DIU -> LftS UEGOS

WED !2;02 PM APEX L A N D F I L L m NU. NO.895r. iu

#

The resistivity survey conducted by the BLM involved the use of Schlumberger soundings,whe« «n electrical current IB Induced into me pound and the electrical field created by theInduced cunvsrt is measured. Aa the spacing of the electrodes that induce the current areIncreased, the effective depth of the electrical field U Increased. Apparent resistivity ismeasured as the electrode spacing b inoeaaed. Sounding remits are evaluated by assumingthe subsurface U comprised of horizontal layer* with uniform electrical resistivity. Acomputer model la used to generate a curve of apparent resistMnes baaed on an assumedconfiguration of horizontal layers, with each layer having a uniform electrical reatattvity.Hu model la used iteratively until the model-generated remits are similar to observedconditions.

Ths geology of me Sunrise Mountain Landfill area ia characterized by aUuvial fan depositsuruieriymg sedimentary bedrock wimsuperimpoaed faulting. TWa complex geologicsetting U conducive to a high degree of lateral variability in llthaJogy. Consequently, theaaacunptUmauaedm interpreting me resulb of meSeMumbergeraoundingiiwffllilttiybeviolated, end tKa interpratatioM may be erroneooa. However, me Bounding resulls canprovide useful data on latge-«cale vanattoeu from one sounding location to another.

Twogeneral types of mteiptctaUflrg of eouadmgreautoaicpMaerttol: one based on lateralvariation bd&g duo to feuhmg, and anomer where Uter^varlatinnladuetDckpoaftfanalvariability (Le, fades changes).

terpreted soundings postulate ~<hat there is a high reaistrvityUyer (Lew greater thanUXX) ohm-metera) underiymg tte landflll mat dips down alopemvay from n^tendfulRcsiativtty thia high is rypJcafly mdicattve of dean sand or gravel(Le^ potentially Hghpermeability). Thia unit te interpreted to extend below the water table Consequenfly, thisunit, if present,, could be a potential pathway for preferential groundwater migration. Iffftulttngis present, however, the fault-gouge zonea may act as B barrier to groundwaterflow. At the toe of the landfill, mil unit It interpreted to be approximately 200 feet belowground surface.

TWa high restfltfrity unit la not apparent in previous boring* at the Sunrise MountainLandfin. Moat of the previous bodngs were shallow (less than 100 feet); however Well B /"

i ihld£lateraDy contououfl, permeable unit were present at depth, existing weH$JnJhe_^study area should have encountered this gone, but none have been inputted. The propo&aTgroumhvater monitoring wells at the LondflU property boundary are deep enough toencounter this stradgnphk unit if present

The resistivity survey does not provide the resolution to identify small-scale features such aschannel deposits that could leve u conduits to leachate and graundwtter flow. Thus,survey does rurt prmHde addiOorjd information that would alter me currantry proposedmanltormg well Locations.

MO

HMD*i,

12/04x98 09:15 BLM MIN nGMT DIU -> LfiS UEGOS

DEC- 2-98 WED I2:D2 PM APEX LANDFILL FAX NO. 70264(3028NO.895

P. II010

3. Monitoring Well Installations

The purpose of installing groundwater monitoring wells is to characterize the subsurfaceenvironment, collect groundwater levels used to assess groundwater flow directions* collectgroundwater samples to assess the potential Impact of the landfill on downgradientgroundwater quality, and to provide estimates on aquifer hydzautic properties.

3.1 Drilling and Soil LoggingThe monitoring «reD boreholes wfll be drifted using a dbert air rabuy drilling rl DuangdrOur£ofeachmorUiofingwdlbc*ehole,drU

s changes to timology to diand&rtise fhe geology andIdentify potential pathways for migration erf feacnate away from the UndfUl

^cutting* samples wfll be logged using fhe Unified Soil assentation System (USCS) asdescribed hi American Society for Testing and Material CASTM) Standard D 2488-84. ThepmeneeoMmoiMa mrurabedjtntarvalawfflbeideBJuled^^^/'t^» «^/ ;^fcv- ^V p.7-i

The borehole wifl then be oveneamed Id a 8~!nch dla farvrdl canstruction. An

logs and well ootutruction report! under ftat supervision of a registered geotogist/engfaieer.

Groondwater monitertag jwdl permits wffl be obtained, and bofti trw dark County PubHcWodcs Dapaxtatent and NDBP wffl be notified prior to die stwt of drilling.

3^ Well Screen IntervalsThe mordtorir^wi^wiU be constructed with Thed^thtogroondwater at the downgradient boundary of the Sunnae Mountain Landfill is eattmatedto range from appraxxmatcr/ IfiO to 230 feet but very Htfle dafai mn available In flue vtdnltyoftheLandflH. Based on dte previous eqjerience at the Sunrise Mountain Landfill thedepth to groundwater may be very difficult to detexminedurbuj drilling, due to Bie slowrate at which the wells recharge- However, an attempt will be madetotnstoEtheweflscreen about 10 ft above and 30 ft beknrthe water table, in 1986,, the ground water level InWell B recovered to only 25 percent of its irdtial hdght after 9 days, due tofreverylow —

Spp^sParmatian.

3.3 Well Construction and CompletionThe propoaed groundwater monitoring weQ0 wfll range in daptf^fcram approximately 100 to300 fact AUlhewelbwfflUanrtniclidu«ln4HbKH~^^chloride (PVQ casing, -with 40 feet of slotted FVC well screen. Tfca first monitoring wellwill be completed with O.QaMndi slotted well screen and 12x20 Monterey sand orequivalent. Bawd on the grain ilze distribution of soil samples enomntered during drilling,the onslte field geologist may specify alternate well screen slot sizes and filter pack

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'DEC- 2-98 WED 12:07 PH APEX LANDFILL FAX NO. 7026443028NU.tfcftJ

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Figure 2Locations for Oraurn*wat»rMenrtorfng W»fli

.CH2MH1LL

DEC- 2-28 VfED 12:03 PK L A N D F I L L FAX HO. 7026U302B r. 12

/cgradAttonj far the remaining well*. Filter pack will be placed in the annular space adjacentto tha weil screen up to about 5 above the top of the well screen. Bentaniie chips or pelletswill be placed in the annular space above the filter pack to form a minimum 2 ft thicksanitary seal The remainder of the annular «p*c* will b€ pressure grouted to the surfaceustagatremiewitha5percerUbentortltegrDutmix. All the wells are anticipated to beabove-grade steel-cased completion, with four above ground bumper- poles set in a concretepad.

The IcH-«*k*" of the monitoring weua will be surveyed, and tied to locauy availablemonuments. Landfill property Unas, and downgndient extent of fill will be surveyed andshown with me well locations on a scaled plot plan.

3.4 Well Development ^Well development win be aecoctphflhed by me fallowing procedures:

• Initial development using a surge block, and b«iling(ksneoes8firyi

• Final development ualng a temporary submersible pump

Measurements of pH. temperature, and electrical conductivity (EC) will be recorded duringwell development. The development proaes will continue until field parameters staHfizeor ten caring volumes have been removed from the welt whichever occurs first, or imtil thewell hsj been dflwateted and has recharged twice and fidd paratnetez? appear to be

Based on existing informadon regarding water yield In the Muddy CreekFormation, H la nrtddpated mat me monitoring wtlla wfll bail dry quickly and tivrtcoiuid£nbie time (more than 24 hours) may be rajuired for the well to recriafge.

3.5 Decontamination ProceduresPrior to transporting the dnH rig and support equipment on site/ the rig, augers, drill rods,and other oqulpmait that 'will be und downhole w\U be steam-cleaned. The drill rig anddownhole toolfl will be cleaned bi tha same manrter after Inftrallfltion ol each well.

WeU con*trucUan materiala such as the PVC blank casing and well screen will be suppliedu new materials, free of aorventa, oib, or any Ford^n ma Her, and will undergo a high*pressure steam rinse prior to mstaHatfon.

Well development and toll and grtnmdwatnr sampling equipment will be decontaminatedprior to use at each sampling location. Some of this equipment includes the surge blocks,pumps or baikrs and mlscellaneoua field equipment. The following decontaminationprocedures will be observed:

1, Waihwrth tap water, using a brush if neoc&oary

2. Wash wifX Alamo*, or a phowphate-ftee detergent, and tap water solution, using*brush If neccnaary

.J

I•DEC- 2-9B WED 12:04 PM XPEI L A N D F I L L PAX KO. 7025U3028

3. RInae with tap water4- Rinse with deiordred or distilled water

5. Air dry

MT«ume

DEC- 2-98 m 12:0* PH APEX L A N D F I L L FAX HI). I . I t

4. Groundwater Sampling Procedures

This ficedon provides the procedures for groundwater sampling, the requeated analyses forgroundwater. QA/QC samples, and aample handing, pacldng, and shipping.

4,1 Groundwater SamplingGreundWftter samples will be collected in general accordance with the followingprocedures:

at until (he well hu fully recovered to »t»Uc groundwBter conditions before sampling.

• Bftfied on thestatk water level, tha velumeofwnter in thewdl cwlng wfll beuefi1/ mli iedL

• The weflwlll be purged of three (3) well volumes or dewatered twice prior to samplingusing * mild steel boils, a tubmenible bladder pump, or equivalent low flew ifpr^Jkr _pump (Le. Eedi-Flow 2).

reduced prior ta mnpte ooUecdqn. If mewellaarepurgedivitnaeteelbA&rorarepurged dry prior to aamplingv then me aamplea wfll be cnllecied using diand placed fax appropriate larwnrtory-eupplied containers for shipment to die ofWterheed laboratory.

• Field measuremerub (Le.. pH, temperature, and electrical cunducdvity [ECJ)wilJbe - T"cdlectrn. * •

• Purging ctnd sampling information wfll be recorded in the field log. Informationmt'iideri will tndude, at a minimtiiro well number; date; times of purging and sampling;•water level and field measurements; volume calculations; and total volume purged.

4.2 Request for AnalysisGround water samples will be collected from the ftva or six new >ve!J5. The samples will besent to an off-el te, fixed Nevada 8tate>certified laboratory. Each sample will be analyzed foetK* EPA Appendix I cctvtituenta mdudJng VOCa by EPA Method $260 metals by EPAMethod fiDlD, u well as chemical/physical parameters including total dissolved soUda(TDS)> pH, tempctature. and specific cnnductu

DEC- 2-98 m 12:05 Pi A P E X L A N D F I L L FAX HO. 702644Mb r. ID

^•X7 y>V

4.3 Quality Assurance /Quality ControlQuality Assurance/Quality Control (QA/QQ wtnplfi* will be collected including blanksamples (trip/ equipment and ambient blanks), matrix spike/matrix spike duplicate(MS/MSO). and duplicate samplea. One duplicate sample, one M5/MSD, and one completeblank sample (far aB analytea) win be taken during the sampling of all 5 or 6 wells. Inaddition, a VOC trip blank and a VOC ambient blank vrfll be taken each day a VOC sampleiscoUected,

TABU I& a n a A N

Antyfioal Omup MM** Kumtor Contalmr

UWmurn

VolunM

«7VDO EPA 8280

EPA 6010

Qctnorv O^Tisny

Tomponhra

•apwm

f

EPA 160.1 P.O

EPA1W-1 P. fl

SpacAo Cmductmca EPA 120.1 P. Q

Total CMeaohwlSoOda EPA 100-1 P,O

3x40^0.vteta

N/A

N/A

WA

K/A

Norm required

New required

Hahflng

14day»

B O0100

In

AnrfyahncoafcWrhlUiKUlUBfy

AnafyroIrrvnadtteirln

4.4 Sample Handling, Packaging, and ShippingDuring thia investigation, water samples wilt be collected for laboratory analysis- Watersamples to be analyzed will be packaged in containers provided by the analyticallaboratory. Analytical tnefhoda, sample contatnem, volumea, preservation methods, andholding tfancs ue summarized in Table 2. These cxjntaincnvUIlnducle:4&m(gIa«a vials,1-Uter amber glass bottles, and/or polyethylene bottles (500-nU and 1-lrtcr). The 4O-ml vialsccmtalning tttnplea to be analyzed for VOCs will be wrapped together with bubble packand secured wtth strapping tape afier aMuring that no alt bubbles are present. Each bubble-wrapped 40-ml vial pair will thien be placed in zip-lock plastic b*g». Ail other glass bottiea

UOCrW

'DEC- 2-98 WED 12:05 PM APEX LANDFILL KU. r . ID

< acuconn umin neon nu

will be wrapped in bubble pack and placed in aeparate zip-lock plutic bags. Polyethylenebottles wfll be plaord into zip-lock plastic bags.

All water samples wtH be •tared art ice fax coolen immediately after collection andpackaging. The cooler* win contain double-bagged ice package* to maintain a sampletemperature at i°C. Prtor to shipment, the empty spaces fa\ the cooler will be filled withbubbla pack in prevent umpta container breakage or movement A Chains-CustodyRecord will be placed In a zip-lock plastic bag and taped to the inside of frw cooler lid. Thecooler win be taped ahui with atnpping tape/ and «t least two aigned custody geals will beaffixed over the bd opening to aQow fl» cooler recipient to dcfanune whether the coolerhas been Opened. Oca* tape wffl be placed over (be cuitodyceab to eneoueihitfte custodyteala ETB not broken acdrtentnUy during shipment Coolen wifl be shipped to thedesignated labontory.

DEC- 2-98 PED 12:05 PM APEX LAHDFILL FAX NO. 7026443028 r. 11 IXJ.O

5. Waste Management

Three type* o! waste material will be gmiernteil during the fold activities. These wastematerials Indude: 1) decorvtaininaticn water, 2) drill cuttings; and, 3)wefl — _____ \development/purge water-

labeled aa ncriharirrintts vmrte. and mathed "awaittog «nalytfcal regnits*tcaulta of groundwater indkAte the poodble prueneo of eontandnatic» at the monitoing•wrfl Icettioitf, fhen die sofl cuttings wffl be labontoty analyzed to churaeterixe the wtxte fordisposal. IF groundwUcr sampk tmlytkal natulte denotfauUcBte the pitatrca iif

uttinffwiUbecxa«aidac^disposed of at on appropriate UndflU.

Decontaminatkin water, wtD devdopnonV and wmple purge water generated during thefield actMHttwfll be collected and held. The derontsmlnatian water wfll be profiled anddispnufd of baaed cm analytical results from the groundwi ter samples collected during thefield *ctMtifc&. If analytical rtsulb indicate that th« groundwater samples are Kazardotu,the decontaadnatkov water wfll be t^w*^ of u hazardoua waste. Otherwiae^ thedecontamination water wfll be dtspoved of as t nonhaxatdaua waste.

. l

'DEC- 298 WED oB PM FAI HU. INU.O33r. 10

6. References

iates, December 1986. 'Sunrise Mountain Landfill Expansion, Clark County,Nevada." Preparedfca-pumpco,Inc.

Bureau of Land ManA^ement. National Applied Resources Sciences Center. August 19,1998. "A Preliminary Resistivity Survey of the Suruin Mountain Landfill"

Desert Beaearch Institute (DRI), Water Resource Center, Ottober 15,1998. "GtoundwaterQualttjr Impacts ol Sunrise LandBIL"