Laserfiche WebLink
� sr �s,��'-7 y"`_.a...m. -�,,'a"Px-�`'� "'. :ia�'•, ��—'ss�' �-.� ,--� - s.��. �' ,.<L�.. ,.�.m-.Y=� .—,��7rs„�+ i`: _ t'"� _ <br /> :, -. dw-��"�ki�- `"�.".r:-'•A°�=,M,. '�R f �'^`m� .w��y��+� �-M" �e , ( 'C3' `H�' �" =`�'a�i�1a-� � :�' <br /> 4 ��d -� r$rid� °r o� ?7t•i. .py wh' 'Kt .+ .8 <br /> NC � � 52"�� Y b�v1`.�. �:��V _::Jc f��.;'C �'�_,Jt9�� dP^C - + h �^ '-Le"'SW"� 7t..tt1'y"� 'Y "M' '?•-. +y �% <br /> y1} - <br /> y <br /> I <br />=bio. <br /> r`+ <br /> Chevron/South Center 7 <br /> September, 1990 <br /> - GROUNDWATER-MONITORING-WELT, INSTALLATION <br /> The four boreholes will be completed as groundwater <br /> monitoring wells. Unless otherwise required, wells will be <br /> constructed of 2-inch-diameter, Schedule 40, polyvinyl chloride <br /> (PVC) blank casing and 0.020-inch machine-slotted screen. <br /> Groundwater at this site is expected to be approximately 25-feet <br /> below grade. The wells will most likely have a completed depth <br /> of 30- to 35-feet below grade. The well screen will extend <br /> approximately 5-feet above the first encountered water. A filter <br /> pack comprised of clean, No. 2 Monterey sand will be set in the <br /> annular space around the well casing and will extend from the <br /> bottom of the screened interval to approximately 2-feet above the <br /> top of the well screen. A seal of hydrated benton--e pellets, <br /> approximately 2-feet thick, will be set above the sand pack and <br /> the well will then be sealed to grade with cement grout. The <br /> wellhead will then be encased in a traffic-rated street box and <br /> equipped with a locking plug. <br /> WEI L SURVEYING AND DEVEIAPPMT <br /> After installatio.f, the wells will be surveyed by a <br /> professional surveyor to determine position and wellhead <br /> elevation. These data will be used in conjunction with water- <br /> level monitoring data to produce a potentiometric surface map for <br /> the site. <br /> After allowing at least two days time for the well seals to <br /> harden, Groundwater Technology will develop the wells. <br /> F� <br /> E � GROCNDWAT6R <br /> TECHNOLOCK INC. <br />