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LEACftG POTENTIAL ANALYSIS WORkSHEET <br /> Project: City of Stockton. Fire Station No. 12, Stockton Date: 7/20195 <br /> Project No.: A68105.01 Client: City of Stockton, Department of Public Works <br /> Location: Soil Boring B-2 Depth to Groundwater: 50 feet <br /> Sample No.: B2-10 Sample Depth: 10 feet <br /> Chemical Analyses Results:TPH-G 23 TPH-D: 19 <br /> (milligrams per kilogram) B/T/E/X: ND / ND / ND 1 ND <br /> S SCORE 10 PTS S SCORE 9 PTS IF S SCORE 5 POINTS <br /> SITE C IF C CONDMON IS C IF CONDITION IS <br /> ,i O CONDITION O MET O MET <br /> FEATURE R IS MET R R <br /> E E E <br /> Minimum Depth to Groundwater from the >100 51-100 25-501 <br /> Soil Sample(feet) = 40 ft 5 <br /> Fractures in subsurface(applies to foothills None Unknown Present <br /> or mountain areas) 10 <br /> Average Annual Precipitation(inches) <10 9 10-25 26-402 <br /> Man-made conduits which increase vertical None Unknown Present <br /> ti+ migration of leachate 10 <br /> Unique site features:recharge area,coarse None At least one More than one <br /> soil,nearby wells,etc. 10 <br /> COLUMN TOTALS TOTAL PTS + + _ <br /> 30 9 5 44 <br /> RANGE OF TOTAL POINTS 49 pts or more 41-48 pts 40 pts or less <br /> ~ MAXIMUM ALLOWABLE 1/50/50/50 .3/.3/1/1 NA3 <br /> B/T/E/X LEVELS(PPM) <br /> MAXIMUM Gasoline 1,000 100 10 <br /> ALLOWABLE TPH <br /> LEVELS(PPM) Diesel 10,000 1,000 100 <br /> 1 - If depth is greater than 5 ft.and less than 25 ft.,score 0 pts. If depth is less than 5 ft.this table should not be used. <br /> 2 - If precipitation is over 40 inches,score 0 pts. <br /> 3 - Level for BTEX are not applicable at TPH concentrations of 10 ppm(gasoline)or 100 ppm(diesel). <br /> ..r Table reproduced from State of California Water Resources Control Board LUFT Field Manual. <br /> ar <br /> V <br />