Laserfiche WebLink
The volume must be corrected to standard temperature and pressure <br /> (STP) <br /> P = Pressure = 14 7 lb/int @ STP <br /> V = Volume cf <br /> T = Temperature in degrees above absolute Zero = 491 580R @ STP <br /> Using the Ideal Gas Law P1V1/T1 = P2V2/T2 <br /> Solving for V2 =P1V1T2/P2T1 <br /> Assuming P1 = P2 = 14 7 lb/int, P cancels from the equation <br /> leaving V2 = V1T2/Tl <br /> V1 = Q cf/m x 1440 min/day <br /> T2 = 491 580R T1 = 459 58 + TOF at sight <br /> V2 = Q cf/min x 1440 min/day x 491 580R/ (459 580 + TOF) <br /> X lb/day = C ug/l x 0 0000000621 lb 1/ug cf x Q cf/min x 1440 <br /> min/day x 491 580R/ (459 580 + TOF) <br /> Q for the Influent sample = The well flow rate + the air flow <br /> SUMMARY <br /> There has been no evidence of floating product or product sheen <br /> on the ground water in MWl since April 14 , 1992 and MW3 and MW10 <br /> since November 11, 1992 The last evidence of product, as a <br /> sheen in the condensate recovery system, was on March 1, 1993 <br /> Vapor recovery has reduced the hydrocarbons in ground water <br /> significantly since the May 25, 1990 sampling, see Table 1 <br /> On October 28 , 1994 a sample of the water being treated by air <br /> stripping inside the "ConVault" was obtained for certified <br /> laboratory analysis This was accomplished to prove the <br /> suitability for dumping this cleaned water to the City of <br /> Stockton' s sanitary sewer This water (800 gallons) was <br /> discharged to sewer on January 25 , 1995 Since that time there <br /> has been no additional discharge to sewer Also at this time a <br /> two hour-weekly bio-venting was initiated on MW-8 <br /> As of March 29, 1995 an estimated 11995 5 gallons of gasoline <br /> range hydrocarbons have been removed from the soil and ground <br /> water beneath this site Previously removed floating product <br /> (40 25 gallons) , condensation from vapor extraction (48 75 <br /> gallons) , projected petroleum hydrocarbon vapor extraction- <br /> destruction (74415 pounds/6 25 = 11906 4 gallons) and venting of <br /> MW8 (0 58 pounds/6 25 = 0 09 gallons) No chlorinated solvents <br /> were detected in chromatogram comparisons of the vapor (air) <br /> samples , "i e " 1 , 2 , -Dichloroethene (DCE) - retention time 2 079 <br /> minutes, Trichloroethylene (TCE) - retention time 3 023 minutes <br /> and Tetrachloroethylene (PCE) - retention time 3 75 minutes <br /> In the past , water samples from MW1 and MW6 were tested using EPA <br /> method 8240 and were below detection limits for these compounds, <br /> see Update Status Report 21, September, 1993 Water samples <br /> obtained on March 4 , 1994 from MW1 , MW6 , MW9 and MW11 were tested <br /> PAGE 5 R603 UPDATE-37 3/31/95 <br />