Laserfiche WebLink
-NIFFM mu wi'i. nk Ou 1p "moi own =ft =am =ft -am =No <br /> Table 4(continued) <br /> Site Parameters For Former Safeway Meat Packing Plant Stockton California <br /> Receptor Industrial/Commerical <br /> Industrial/Commerical Comment on Site Specific Parameter Values <br /> Symbol Parameter Units RME Average <br /> Ugw Ground Water Darty Velocity cm/yr 624 473 Calculated values In March 1995 the groundwater gradient(q was <br /> 0 006 From USEPA(1988)a representative hydraulic <br /> conductivities(Ki for a sandy clay is 3 3E 5 curls and for a silty <br /> clay is 2 5E 5 cm/s velocity was estimated as K'1 <br /> I <br /> W Width of Source Area Parallel to Wind or cm 1500 1200 Estimated distance between borings B 16,assumed to be at edge <br /> Groundwater Flow Direction of over excavation operation and center of Navy Drive is 1200 cm <br /> (45 ft) 1500 cm(55 ft)is the ASTM default value <br /> delta air Ambient Air Mixing Zane Height cm 200 200 2 meters(200 cm)is the approximately top of the breathing zone <br /> this is ASTM default value <br /> delta gw Groundwater Mixing Zone Thickness cm 200 200 No site specific data ASTM default value used <br /> nu Areal Fraction of Cracks in Foundation/Wall cm'2 crackslcm'2 total NIA NIA Not applicable to Safeway site,there is no building in area of <br /> area concern <br /> theta asap Volumetric Air Content In Capillary Fringe Soils cm'3 air1cm'3 soil 0 038 0 046 Assumes 90%saturation of capillary fringe soil this is the same <br /> assumption as ASTM default value <br /> theta&crack Volumetric Air Content in Foundation/Wall cm"3 air/cm'3 total N/A NIA Not applicable to Safeway site,there is no building in area of <br /> cracks volume concern <br /> theta as Valumatric Air Content in Vadosa Zone Soil cm^3 air/cm'3 sod 026 023 Boring logs indicate that the vadose zone sod is moist Based on <br /> this comment it has been assumed that the soil is at field capacity <br /> I e,all free water is drained&about 112 of pore space is filled wit <br /> water <br /> theta T Total Soil Porosity cm'31cm"3 sod 03B 046 Average case is mean total porosity for a silt soil(Mills at of <br /> 1985) RME Is the ASTM default value <br /> theta wrap Volumetric Water Content in Capillary Fringe cm'3 H2O1cm'3 sod 0 342 0 414 Assumes 90%saturation same assumption as ASTM default value <br /> Soil <br /> theta wcrack Volumetric Water Content in Foundation/Wall cm'3 H2O1cm'3 total NIA NIA Not applicable to Safeway site there Is no budding in area of <br /> Crack volume concern <br /> theta ws Volumetric Water Content In Vadosa Zone Soil cm'3 H2Olcm'3 soil 012 023 Boring logs indicate that the vadose tone soil is moist Based on <br /> this comment,it has been assumed that the sod is at held capacity <br /> I e an tree water is drained&about 112 of pore space is filled wit <br /> water <br /> rho s Sod Bulk Density g sodlcm'3 sod 1 7 1 38 Average case bulk density is the mean density for silt soils(Mills et <br /> al 1985),RME is the ASTM default value <br /> tau Averaging Time for Vapor Flux s 7 BSE+08 7 BBE+08 Averaging time is 25 yearsexpre5sed In seconds <br /> x VnerkMSAFEWAY2 XLW Page 2 of 2 2126/96 <br />