Laserfiche WebLink
Y <br /> Sharkey Truck Stop <br /> --2 - September'2012l <br /> Claim No. 9384 <br /> ATTACHMENT 1 <br /> SUMMARY OF BASIC SITE INFORMATION (Conceptual Site Model) <br /> Site Location/ History <br /> • The Site is located at 850 West Milgeo Road in Ripon, California and is an inactive truck <br /> staging area and fueling'facility. <br /> • The Site is bounded by West Milgeo Road to the north, Highway 99 to the south, east <br /> and west. The surrounding land use commercial. <br /> • In April 1994, soil contamination was identified during the removal of USTs. <br /> • To date, 11 monitoring wells have been installed and monitored regularly. <br /> •. A Site map showing the location of the monitoring wells and groundwater level contours <br /> is provided at the end of this five year summary. <br /> Pollutant Source <br /> • Nature of Contaminants of,Concern:. Petroleum hydrocarbons only.. _ <br /> • Source, Date reported, and Status of Release: UST system, 4 April 1994, USTs <br /> removed. <br /> • Free Phase Hydrocarbons: Yes. <br /> Geology/ Hydrogeology { <br /> • Stratigraphy: The Site is underlain by interbedded and intermixed sand, silt and clay. <br /> • .Maximum Sample Depth: 50 feet below ground surface (bgs).. r <br /> • Minimum Groundwater Depth: 22.10 feet bgs at monitoring well MW-2. <br /> • Maximum Groundwater Depth: 31.68 feet bgs at monitoring well MW-11. <br /> • Current Average Depth to Groundwater: 24 feet bgs. , <br /> • Saturated Zones(s) Studied: 22 to 60 bgs. <br /> • Groundwater Flow Direction: Variable, northerly at 0.002 feet per foot. <br /> Groundwater Trends: <br /> This Site has been monitored regularly since 1996. TPHd ttrends are shown below: <br /> Source area (MW-4) and Down gradient (MW-1 and MW-6). <br /> TOTAL PETROLEUM HYDROCARBONS(TPH1 AS IXESEL FUEL(TPHD)Results For MW4 <br /> 1.4E+06 <br /> : <br /> t E+46 - - 7 <br /> C5 600000 <br /> 600000 I .'�•. �;..� iV _ __ - }.. — <br /> t 400000 _ ----•,.A�`- -..L. - ----� �'`A is. ' <br /> 200000 <br /> �, TOTAL PETROLEUM HYDROCARBONS(TPH)AS DIESEL FUEL{TPHD) w -r Trend <br />