Table 1: Data Summary
Feb 2005 Test Results with PERMEATOR "OFF"
PV OFF GASOLINE SAVINGS
Pulses %HC Avg. Temp ft3 mg of C3 lbm mass gasoline gallons liquid gallons liquid/day % throughput
Open (Station)              1,773 24.78                   884.40      30.41                        45.61                           8.77 11.94
Closed (Station)              1,117 59.13                   566.68      36.45                        54.68                          10.52 9.03
Overall              2,889 42.29 71.06                1,450.58     30,318,967.89      66.84                      100.26                          19.28 21.31 0.111%
PV ON
Pulses %HC Avg. Temp  ft3 mg of C3  lbm  mass gasoline  gallons liquid gallons liquid/day % throughput
Open (Station) 284 27.81 72.46                     71.60       1,027,415.96        2.27                          3.40                           0.65 6.53
Closed (Station) 454 57.00 64.81                   116.27       3,423,961.38        7.55                        11.32                           2.18 4.55
11.08 0.059%
Storage Tank Evaporative Losses
1999 CARB Study, " Total Hydrocarbon Emissions from Two Phase II Vacuum Assist Vapor Recovery Systems During Baseline Operation and Simulated Refueling of On-Board Refueling Vapor Recovery (ORVR) Equipped Vehicles"
Project Number: ST-98-XX, Compliance Division D E F
a, b value explanation: since the p/v ON data did not yield meaningful data due to gross leaks until after 3:00 pm during the data collection period (data collection started at 10:00 am), ARID extrapolated the meaningful data time interval
to calculate the 2.031 lbm/1000 gallon figure at propane,C3H8.  The gross leaks were not fixed until 3:00.
A B C February-05 February-05
Gilbarco Dresser Wayne Dresser Wayne ARID Test, Gilbarco ARID Test, Gilbarco ARID, Evap Loss Model
(PV ON) (PV ON) (PV OFF) (PV ON) (PV OFF) (PV OFF)
(lbm/1,000 gal) (lbm/1,000 gal) (lbm/1,000 gal) (lbm/1,000 gal) (lbm/1,000 gal) (lbm/1,000 gal)
Baseline   0.396   0.028 0.026        
44.9% ORVR penetration   0.782              
                 
39.5% ORVR penetration       0.0524          
38.2% ORVR penetration         0.289        
                 
40% ORVR penetration as C3H8 a Matus       1.200 3.480  
gasoline vapor           3.047 5.775 6.578
as C3H8 b ARID       2.031   4.385
                 
  as C3H8              
  Result Ratio              
ARID/Gilbarco 1.53 a            
ARID/Gilbarco 2.60 b            
                 
ARID/Wayne 22.90 PV ON a          
ARID/Wayne 38.77 PV ON b          
ARID/Wayne 12.04 PV OFF            
1.53 = 1.200 / 0.782
2.60 = 2.031 / 0.782
22.90 = 1.200 / 0.0524
38.77 = 2.031 / 0.0524
12.04 = 3.480 / 0.289
PERMEATOR "ON" Summary Retentate (Clean Air Exhaust) Feed Recovery Efficiency
Total flow scf          235.54                  981.80    
Total mass grams          122.69            16,710.33  
Total mass lbm             0.27                    36.84   99.27%