|
Client: City of Lathrop Lat/Lon : 37.786480/-121.315174 � Luhdorff
<br /> Project Name: ASR FeasibilityStud Well Name: Stewart MW
<br /> LSCE#: 21-1-054 Drill Date: 8/15/2022 - 8/17/2022 Scalman i n i
<br /> Location: Lathrop, CA DrillingMethod: Direct Mud Rotary
<br /> Geolo ist: R. Sanchez GIT Driller: Bradley& Sons Drilling Consulting Engineers
<br /> y N 16"ohm.m SP mV
<br /> s 0 50 -100 50
<br /> Strat- = Preliminary Well Profile
<br /> s Lithologic Description Column 6a ohm.m SPT ohms
<br /> c. a 0 50 0 50
<br /> 0 0
<br /> Ground Surface
<br /> Silty Clay- low plastic, dark brown to grey, w/very ►• • ,
<br /> fine to fine sand stringers----------------------------------------
<br /> ►i. �,i
<br /> - grey,
<br /> Sand Clay low plastic, dark brown tow/fine
<br /> Y Y P � ,
<br /> to coarse sand stringers ►•, ► •`►� -
<br /> 50 g 50
<br /> 12.75 Inch Dia. Borehole
<br /> Sand -fine to coarse, grey, w/ low plastic grey clay
<br /> streaks
<br /> -• - •�.
<br /> --------------------------------------------
<br /> Sand & Gravel -gravel up to 1/8", fine to coarse ��, ► �, i
<br /> 100 sand, brown to grey, w/ medium plastic brown clay goo '-♦ ♦�
<br /> streaks '
<br /> Annular Seal - 10.5 Sack
<br /> - -------------------- -------- Sand/Cement Grout
<br /> Sandy Silty Clay - low to high plastic, brown-tan to *. ►;, ► ;,
<br /> grey-white, w/fine to coarse sand stringers and �♦ ♦��
<br /> trace grave i • •
<br /> 150 _ 50 ►,, ► ,,
<br /> Sand -fine to coarse, grey-brown, w/ low to high ►i ' i`�
<br /> plastic grey-brown clay streaks Well Casing - 2-Inch Dia.
<br /> '�• •�� Sch. 40 PVC ASTM
<br /> F480-88A (Typ.)
<br /> 200 200
<br /> ---------------------------------------------
<br /> Sandy Clay- low to medium plastic, grey-brown, w/ - 230--- Fine Sand Transition
<br /> fine to medium sand stringers 240___ Seal (3 feet)
<br /> 250 ----------- 250
<br /> Sand -fine to medium, grey-brown, w/ low plastic Well Screen - 2-Inch
<br /> re
<br /> 260--
<br /> blue- clay streaks 265--- Dia. Sch. 40 PVC ASTM
<br /> g Y Y
<br /> 270
<br /> F480 88A w/0.030 Inch
<br /> --------------------- ------
<br /> Slot Size (Typ.)
<br /> Sandy Clay- low to medium plastic, blue-grey to
<br /> 300 tan, sticky, w/fine to medium sand stringers 300
<br /> 01
<br /> 350 350
<br /> 400 400 Bentonite Intermediate
<br /> Seal (Typ.)
<br /> ---------------------------------------------
<br /> Clayey Sand -fine to medium, grey-black, w/ low to
<br /> medium plastic blue-grey clay streaks
<br /> 450 ------------------------------------------ - 450
<br /> Sandy Clay- low plastic, grey-brown, w/fine to
<br /> medium sand stringers
<br /> 500 Sandy Silty Clay - low to medium plastic, blue-grey, 500 500---
<br /> w/fine to medium sand stringers and trace gravel 510---
<br /> Gravel Envelope - SRI
<br /> Clayey Sand -fine to coarse, grey to brown-black, "" 530--- . . . #8 (Typ.)
<br /> w/ low plastic grey-brown clay streaks and gravel 540---
<br /> 550 stringers 550
<br /> ----------------------------------------
<br /> Sandy Clay- low plastic, mottled grey-brown-tan, w/
<br /> fine to medium sand stringers
<br /> ----------------------------------------
<br /> Clayey Sand -fine to coarse, grey-brown, w/ low
<br /> 600 plastic mottled grey-blue-tan clay streaks, sticky 600
<br /> ------------------------------------------
<br /> Silty Clayey Sand -fine to medium, grey-brown, w/ '
<br /> low plastic blue-grey clay streaks, sticky
<br /> ----------------------------------------
<br /> Sand -fine to coarse, grey-brown, w/ low plastic `l
<br /> 650 grey-brown clay streaks 650 8.75-Inch Dia. Borehole
<br /> Clayey Sand -fine to coarse, grey-brown, w/ low
<br /> plastic grey clay streaks
<br /> ---------------------------------------------
<br /> 700 Sand -fine to coarse, grey-brown, w/ low plastic - 700
<br /> grey clay streaks
<br /> ------------------------------------
<br /> Clayey Sand -fine to medium, grey-brown, w/low
<br /> plastic blue-grey clay streaks 730
<br /> 740---
<br /> 750 750
<br /> ---- ------ - 760-- W I S I h
<br /> 0 Xx
<br /> 0 00
<br /> 00
<br /> 765--- e l Sump -2-Inch Dia.
<br /> Sand - medium to coarse, grey-brown, w/ low plastic 770--- Sch. 40 PVC ASTM
<br /> grey clay streaks F480-88A (Typ.)
<br /> 800---
<br /> 800 800
<br /> K\2022 Job Files\21-054
<br />
|