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_n � t�'.-".� �''�'�'. +"d .��'"tw a. ' M. �, .".�- ,b .,.t;,,��°c;�;...e.,' _._�,". , F. yti�.yw,f,-za�ti�'� y.'�°'„'�rra"�•q'3� ;+n,:w �"x�., »w �� v"`�" tt§ ';..;_ �G ..yy��_ es L s $ I x ��•v-�` e�ir�e.s �@�� ''a�r'.� - �43.��j' d' �y�'f i��r.s'�k°Sw.�, h � �ski+"l ;�, rte �,w_� "'yy � 'y - ��3:*�'-�'_��' 'TWA tr p Delta Environmental Consultants,Inc. 3330Data Drive,Suite too Rancho Cordova,CA 95670 916/638-2085 FAX:916/63&WS5 i; a April 23, 1991 Y Mr.Bob Brothers Department of Public Works City of Stockton 425 North El Dorado Boulevard Stockton,California 95202 Subject: Revocable Permit Application i Near 620 Wast Charter Way Shell Service Station SIOcktOn,California Shell WIC No.204-75244305 Delta Project No.40-88-586 Dear Mr.Brothers: Delta Environmental Consultants, Inc.(Delta),is resubmitting this revocable permit application along with a check for$270 and accompanying figures to obtain an encroachment permit on city right-of--way adjacent to the referenced site. Delta proposes to install one ground water monitoring well(MW-11) on the sidewalk of Harrison Street near West Charter Way as shown on the enclosed site vicinity map. This monitoring well has been proposed for installation as part of a subsurface investigation requested by th—California Regional Water Quality Control Board,Central Valley Region. This investigation d being conducted to determine,the presence or absence of gasoline constituents in the vicinity st a service is station facility located at 620 West Charter Way,Stockton,California. The scope of the proposed work involves drilling one 10-inch-diameter hole to a depth of approximately 40 feet,utilizing a truck-mounted drill rig. The drill rig measures approximately 25 feet long and 8 feet wide. The well would be constructed in one day,with a design similar to the one shown on the enclosed monitoring well construct on diagram. The well azll be finished with an internal locking cover and a traffic-rated external a'rcular protection cover,approximately I foot in diameter, that is flush with the ground surface, Upon completion of the well,the soil and ground water generated during construction will be removed, and the surface returned as close asis reasonably possible to its present state. Necessary traffic signs and cones will be used to divert and/or direct traffic. Underground utility Iocations have been identified with the local utility services as ShoRn on the enclosed site map. The locations have been confirmed with the aid of the Underground Services Alert Network and its subscribers, The boring will be hand-augcred to a depth of 5 feet below 1 tdc prior to drilling to confirm that underground utilities are avoided.