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MUNICIPAL UTILITIES DEPARTMENT <br /> REGIONAL WASTEWATER CONTROL FACILITY <br /> 2500 NAVY DRIVE <br /> A;& STOCKfON, CALIFORNIA 95206 Groundwater Discharge Attachment <br /> CrrY OF srpCKTON (209) 9448750 <br /> 944-8760 Part B - Groundwater Description <br /> PURPOSE—The Groundwater Description will be used to evaluate all aspects of the groundwater proposed to be <br /> discharged to the sanitary system <br /> Further instructions on reverse side <br /> B1 Business Activity— Describe the present and past business activity occurring on the premise, as well as present <br /> and past wastewater generating operations <br /> a) Present Activity Retail Service Station & Mini Mart <br /> Product Retail of gasoline and food items <br /> Wastewater Generating Operations (s) Toilets and sinks for employees only <br /> b) Past Activity —_RQ:tail Service Station _ <br /> Product Retail of Gasoline <br /> Wastewater Generating Operations(s) <br /> B2 Description — Describe the known or suspected pollutant source(s) and history of the groundwater contaminants <br /> (Attach sheets as necessary) <br /> Gappl2me Rancre H drocarbons with Benzene Toluene Eth lbenzene and Xylenes. <br /> Ground Watgr conformation was discovered„ during initial site assessment borings <br /> 2 1988. <br /> B3 Substances Proposed to be Discharged — Give common and technical names of any materials or chemicals pro- <br /> posed to be discharged to the sewer Briefly describe the physical and chemical properties of each substance and <br /> product Give proposed concentrations (Attach sheets as necessary) <br /> NAME DESCRIPTION CONCENTRATIONS <br /> Range Hydrocarbons Dissolved an ground water 100 mg/l <br /> Organics) gasoline constituents of , 0 .25 mg/l <br /> Toluene Eth lbenzene, X len <br /> PH Ground Water PH from sam lin wells 5.1 - 5.7 PH <br /> B4 Proposed Quantities—give the average estimated gallons/day as well as peak hourly and peak daily flows in gallons <br /> of the groundwater proposed to be discharged to the sewer <br /> i�n0� 1Jgns/day average <br /> Ions da <br /> _nPt-.k daily1d4 aallQns day <br /> 65 Proposed Discharge Period — Give the following information <br /> a) Discharge will occur daily from d 7 00 A.M. to 7 04 A.M. <br /> b) Circle the days of the week that the discharge will occur <br /> S M T W T F S <br /> c) Seasonal — Circle the month(s) of the year the discharge will occur <br /> J F M A M , J J A S O N D <br /> d) Years -- Indicate the total proposed discharge period May 1994 - May 1997 <br /> MUD 1089 <br />