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r <br /> y . <br /> n.— ` :' '' k: - "' Y,. -. f, -,i x "• _ Y � ate. aq - - J <br /> „_ w ::or_ r 34 ' i fi+, ..^� L -- - e-,y 1 �.'� AL3^ "` " •_ <br /> 01-November 2004 <br /> kq <br /> AGE-NC,,Project No..95 `0137 Y � _ <br /> F, or <br /> 'Page 2 of 7 : <br /> 2.0. SCOPE OF WORK' S <br /> The proposed scope bf work iiicludes the drilling and-ins-ta lation of.three shallow groundwater- . <br /> T . monitoring wells, installed west of.the.location°of well 1VIW=4 and south of well MW=1 <br /> 2 J7 <br /> :2.1. DRiLL-ING AND SAMPLING <br /> 4. <br /> Soil.borings will be advanced using-a. -rill truck-motirited drig equipped with hollow=stem augers. <br /> Borings=established for. 'ground water monitoring wells-will!_utilize 8.25=inch.augers:"Proposed <br /> - _ E <br /> -monitorin well locations -are illustrated on Fig ure 2 The ro osed monitorin well desi is.-- <br /> g _ . g p p� .� g �1 <br /> _ illustrated-on Figure. 3:-Soil-:samples_-Awll be collected.at'five foots;iriteruals•-1 tions; <br /> beginning at 5. feet bsg iii each b'o_ring..Samples will be;coNcte&using a California split-spoon . .� <br /> sampler,nd brass sleeves::The sam ler will be-driven b=dro in a 140-pouiid:weight from a,heighf,.-- <br /> p , . Y Ppg .__ <br /> of 30-inches.'The riuinber of blows-required to drive each'6 inch length of the sampler(plow counts) <br /> -are to be-recorded:on the boring logs by an AGS,staff geologist Upon sample`retrieval,the midcll� <br /> 'brass sleeve will be.removed from the sampler. The ends of the sleevle will be,in rr ediateiy covered .. � ` <br /> with-Teflon or aluminurtm sheets,=sealed with blastic end caps, secured with tape..andj ediately.:._b c <br /> w placed in achilled container for transportation io a State-certified laboratory_Eaeh sample sleeve will <br /> be labeled with the following bonng_location;depth,aime, date:and sampler's initials: <br /> 2:2. E Q TJIPME1vT_DECONTAMINATION; <br /> f <br /> -� ,✓ ; . <br /> Fi <br /> T All'sampling tools andLbrass+sleeves used for sarriple collection willbe thoroughly rinsed wrtl,clean._ x <br /> ' water after washing with a solution.of Alconox. All hollow stem augers are steam-cleaned prior_to <br /> r - advancement iri:each boreholep - - <br /> 2.3. MONITORING WELL INSTALLATION, DEVELOPMENT AND SURVEY, r= 7 <br /> x _ <br /> ' he pal t borings will be completed as single level ground wli ter monition- <br /> The screened�from ' <br /> _ r <br /> 11;21t6 feet:bsg:Following installation,each well willbe developed to maximize water flow and F: <br /> a <br /> minimize the amount�of fine-grained sediment drawn into therwell darling pumping 1.in and_ <br /> the top ofeacli existing and:newly:iristalled wellcasing(well�head);awrll be surveyed'to: determine 1 <br /> � ._ $ . T <br /> its elevation relative to.mean sea level Procedure_s for well iristallation,deyelopmerit and survey are <br /> - _ 'resented m Sections 3 2 and 3 3 ;respectively= <br /> •j 'f <br /> _ <br /> ir� j ;€ s �x 4dvanced GeoEov�ronmental;Inc T <br /> -47 WT <br /> Z --i� <br /> 71 <br />