Laserfiche WebLink
TABLE 21 <br /> CALIFORNIA DTSC SCREENING-LEVEL MODEL FOR GROUNDWATER CONTAMINATION: <br /> SOIL AND BUILDING PARAMETERS <br /> US CAN—WELTY ROAD <br /> 35275 Welty Road <br /> Vernalis,California <br /> Model Input Parameters Source <br /> Building a Future building with a basement Most conservative scenario for future buildings <br /> Depth below grade to bottom of enclosed space floor,LF(cm) 15 DTSC/Cal-EPA model default <br /> Depth below grade to water table,LWT(cm) 1041 Site specific-from groundwater monitoring data <br /> Soil type directly above water table SL Sitespecific-from soil and groundwater investigation reports <br /> Average soil/groundwater temperature,Ts 19.5 DTSC/Cal-EPA model default <br /> Average vapor flow rate into building,Qsoii(L/m) 5 DTSC/Cal-EPA model default <br /> Vadose zone soil type SL Sitespecific-from soil and groundwater investigation reports <br /> Vadose zone dry bulk density by cm3 1.62 DTSC/Cal-EPA model default for soil type <br /> Vadose zone soil porosity nv unitless) 0.387 DTSC/Cal-EPA model default for soil type <br /> Vadose zone soil water-filled porosity O,v(cm3/cm3) 0.103 DTSC/Cal-EPA model default for soil type <br /> Averaging time for carcinogens ATS(years) 70 DTSC/Cal-EPA model default <br /> Averating time for noncarcinogens,ATNC(years) 30 DTSC/Cal-EPA model default <br /> Exposure Duration,ED(years) 30 DTSC/Cal-EPA model default <br /> Exposure Frequency,EF(days/year) 350 DTSC/Cal-EPA model default <br /> Abbreviations: <br /> Cal/EPA=California Environmental Protection Agency <br /> cm=Centimeters <br /> cm3/cm3=Cubic centimeter per cubic centimeter <br /> DTSC=Department of Toxic Substances Control <br /> g/cm3=Grams per cubic centimeter <br /> L/m=Liters per meter <br /> SIC=Silty Clay <br /> SCS=Soil Classification System <br /> Model Source: <br /> Screening-Level Model for Groundwater Contamination,Version 3.0;04/03 <br /> (last modified February 2009). Cal/EPA DTSC. <br /> htty://www.dtsc.ca.gov/Assessin Rg •sk/JE Models.cfm <br /> Page 1 of 1 SAIE <br />