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uplift of the Sierra Nevada Batholith to the east. The sediments range in age tram Recent to Cretaceous and possibly older , and coni ,: of sands, gravel a , silts , and clays produced by repeated rewor t i ng of the oi.ttwash from the Sierras. 5%eliet in thc- vicinity of the site is relatively flat . ;_r (mile or 10-3c: , wl tit dr,ti nage to the west-southwest towards the Sacramento- 1-or-I ton Delta arE?a. Weber Point at the east and of the Stoct l on Ejeep Writer Channel i s appro i matel ti, =/4 mile to the west . and rlor mun -31 ough 1a aboLrt 1 /2 mile to the soUth. FLATE I I , from a LISGS t oponraphi c sheet , shows the location of the site in relation to other nearby feature. SL)-[L--S CLr-)SSIFTCATTON: Ac_cordinq to the 1952 publication a ssUed by the University of Cal i fcjr-nia , brim el ey , the so-Ll in this area is t nown as Stoct ton Adobe Cl iy. It i, s5 a dart gray to brown alluvial soil derived as outwash from basic igneous sources . (ie , the Sierra Nevada Bath- 013th. ) ath- olith. ) It i s considered to have imperfect drainage , h avi na hardpan s5ub,ir.ti l layers gEaner'al l y underlain with unconsol z dated m�FtterIat . The Storie lnde , , . 2e , Qlves it a classification as pr.)cat- . PLATE TIT is ,a portion of a sails profile map from the clt]O:E? pUbli. catlon. DFF TH TO GROUNDWATER: Ref err i. no to the f al 1 1992 water table map issued by the San Joctyut n Flood Contro L District . F'_LH_fE I V ,,, groundwater was recorded at between bl !, 71 bql . at this location . The r—(31 anal ar<adi ent i -i indicated to be to the east-northeast ; however , this maty change locallN . Based on published data, the hi ghost w,atc=r levels measured in the last lit years at thi -i si to were ab0Ut --'5 bgl in both the spring 9, fall of 198". LoI A r I ON OF NE0RSY WELLS- The The wet1s that the Flood Control District Uses for water level measuroments yarn shown on the attached PLATE V, which indicates that there are no control wells In the immediate vicinity of the si trM. The nearest wells appear to be appr-o , i matel y 1 mile away. Time constraints for the submittal of this workplan did not per rni t rosEa�trr_h i ng County f t l es in order to locate any additional comer ci al , domestic , or groUndwater monitoring wells. None were noted in the _tre.A during a brief visit to the site , but if it is deemed necessary , further investigation will be conducted prior to beginning the proposed wort . FRIOR USE OF REMOVED UST s: