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Home My WebLink AboutDAQ-2024-007406Technical Supporting Documentation Proposal to Amend R307-328;Gasoline Transfer and Storage,to establish a requirement for gasoline dispensing facilities located in Davis,Salt Lake, Tooele,Utah and Weber counties to use CP -207 certified dripless nozzles and low permeation hoses for the dispensing of gasoline 2024 Gasoline Dispensing Inventory The Utah Division of Air Quality (UDAQ)developed an inventory of the number of gasoline dispensing pumps currently located within the applicable counties.That inventory was then multiplied by 2 to approximate the number of gasoline nozzles and hoses located within the same region,as each pump typically houses two different filling locations. Table 1:Number of gasoline dispensing pumps located within each county included in the proposed amendments to R307-328. County #Businesses # Dispensing Pumps Davis 75 867 Salt Lake 235 3,193 Tooele 38 234 Utah 154 1,628 Weber 79 941 TOTAL 581 6,863 Source:Dispensing units provided by Utah Weights and Measures Program Manager (2023). Total number of gasoline dispensers:(2 hoses and nozzles per pump)x (6,863 pumps)= 13,726 dispensers. Low Permeable Hoses Below is an overview of how the Utah Division of Air Quality quantified the emission reductions associated with the adoption of CP -207 certified low permeability tubing. CARB empirical equation to predict uncontrolled permeation rate1:Permeation Rate = 16.628e0.0693(temp in C) Annual Average Salt Lake City temperature2:53 degrees F/11.7 degrees C. Permeation rate =37.3 g/m2/day. (37.3 g/m2/day)(0.0022 lb/g)(0.1824 m2 conv hose)=0.0149 lb/day evaporative loss/hose. (0.0149 lb/day)(365 days/yr)=5.4602 lb/yr/hose/(6.24 lb/gal weight of gas)=0.8750 gal/yr loss/hose. (0.8750 gal/yr)(0.96 emission reduction from low perm hose)=(0.84 gal/yr saved)(6.24 lb/gal gas)=5.24 lbs/yr/hose savings with low perm hose. 2 U.S.National Weather Service. 1 CARB,Gasoline Dispensing Facilities Hose Emissions Inventory For Vacuum Assist and Conventional Hoses Appendix 4.https://ww2.arb.ca.gov/sites/default/files/barcu/regact/2011/evr11/gdfhapp4.pdf (13,726 fueling positions)(5.24 lbs/yr/hose)=71,924.24 lbs/yr/2000 =35.96 tons/yr fuel emission control. (71,924.24 lbs/yr)/(6.24 lb/gal gas)=11,526 gal/yr saved ($3/gal)=$34,579 saved /year. Notations 1.0.0022 lb/gram conversion factor from gram to pound. 2.0.1824 m2 conv hose =avg permeable surface area for conventional hose3. Conclusion:The adoption of CP -207 certified low permeation hoses would result in the reduction of 35.96 tons per year of VOC emissions. Dripless Nozzles –MOVES4 Workbook Below is an overview of the resulting emission reductions from the adoption of CP -207 certified nozzles as identified using the MOtor Vehicle Emission Simulator v4 (MOVES4)4. Density Gasoline (E10) Fuel Type Grams to lbs Gasoline Density*Lbs per Gallon Gasoline E10 0.00220462 2829 6.23686998 MOVES4 Default 2026 Summer Weekday July Refuelling Spillage Emissions Uncontrolled .7 lb/1000gal Grams Per Day MOVES4 Default 2026 Summer Weekday July Refuelling Spillage Emissions Uncontrolled .7 lb/1000gal Lbs Per Day County VOC Refueling Spillage County VOC Refueling Spillage Davis 98406 Davis 216.95 Salt Lake 327475 Salt Lake 721.96 Weber 61537 Weber 135.67 Tooele 37028 Tooele 81.63 Utah 167212 Utah 368.64 Total 691658 Total 1524.84 4 https://www.epa.gov/moves/latest-version-motor-vehicle-emission-simulator-moves 3 CARB,Gasoline Dispensing Facilities Hose Emissions Inventory For Vacuum Assist and Conventional Hoses Appendix 4.https://ww2.arb.ca.gov/sites/default/files/barcu/regact/2011/evr11/gdfhapp4.pdf MOVES4 Default 2026 Summer Weekday July Refuelling Spillage Emissions Controlled .05 lb/1000gal Grams Per Day MOVES4 Default 2026 Summer Weekday July Refuelling Spillage Emissions Controlled .05 lb/1000gal Lbs Per Day County VOC Refueling Spillage County VOC Refueling Spillage Davis 34722 Davis 76.55 Salt Lake 115475 Salt Lake 254.58 Weber 20566 Weber 45.34 Tooele 17780 Tooele 39.20 Utah 58978 Utah 130.02 Total 247521 Total 545.69 %Reduction -64.21% %Reduction -64.21% MOVES4 Default 2026 Summer Weekday July Refuelling Spillage Emissions Uncontrolled .7 lb/1000gal Gallons Per Day County VOC Refueling Spillage Davis 34.8 Salt Lake 115.8 Weber 21.8 Tooele 13.1 Utah 59.1 Total 244.5 MOVES4 Default 2026 Summer Weekday July Refuelling Spillage Emissions Controlled .05 lb/1000gal Gallons Per Day County VOC Refueling Spillage Davis 12.3 Salt Lake 40.8 Weber 7.3 Tooele 6.3 Utah 20.8 Total 87.5 MOVES4 County Year Table countyI D yearI D refuelingVaporProgramAdjust refuelingSpillProgramAdjust 49011 2026 0 0.92857 49035 2026 0 0.92857 49045 2026 0 0.92857 49049 2026 0 0.92857 49057 2026 0 0.92857 Control efficiency -92.86% Gallons Saved Per Day 157.0 (157 gal/day)(365 days/yr)(6.24 lb/gal)/2000 lb/ton =179 tons/yr fuel emission control. Conclusion:The adoption of dripless nozzles would result in the reduction of 179 tons per year of VOC emissions. Combined Emission Reductions When taken together,the adoption of CP -207 certified nozzles and hoses resulting in a total 214.96 tpy,or 0.59 tons per day,of VOC emissions reductions from within the 5 applicable counties. Costs To estimate the incremental costs associated with the adoption of CP -207 certified nozzles and low permeability tubing,the Utah Division of Air Quality identified the cost associated with conventional equipment and compared that to the costs associated with certified equipment. Capital and Incremental Costs: ●Costs for hoses5: ○Conventional hose:$268 mean upfront capital cost ○CP-207 certified hose:$451 mean upfront capital costs for 8 feet per hose. ○Incremental costs of low permeation hoses:($451 -$268)$183 per eight feet of hose. ○Total incremental cost of all hoses:($183 x 13,726)$2,511,858. 5 The cost for nozzles greatly ranges from under $100 for a basic nozzle without auto-shutoff and spill guard to nearly $600 for the most expensive nozzle.UDAQ researched the retail cost of 3 types of common dripless nozzles certified by CARB.The cost for these nozzles ranged in price from $373-$568 with a mean price of $478. Conventional nozzles with auto shut-off and spill guards range from $150-$340 with a mean price of $188. ●Costs for nozzles6: ○Conventional nozzles:$188 mean upfront capital costs. ○CP -207 certified nozzles:$478 mean upfront capital cost. ○Per nozzle incremental cost relative to a traditional nozzle:($478 -$188)$290 per nozzle. ○Total incremental cost of nozzles:($290 x 13,726 )$3,980,540. ●Total incremental capital cost for both hoses and nozzles:$6,492,398. Cost Savings: The UDAQ has identified a lifetime cost savings over the anticipated three-year lifetime of the dripless nozzles and low permeable hoses resulting from the reduction of lost gasoline products for consumers. ●Low Permeable Hoses:11,526 gal /year saved hoses ($3/gal)=$34,579 saved /year ○$34,579 x 3 years =$103,737 ○$103,737 lifetime savings for consumers. ●Dripless Nozzles:157 gal/day *365 days =57,305 gal saved per year ○57,305 gal *$3.00(per gal)=$171,915 per year ○$171,915 x 3 years =$515,745 ○$515,745 lifetime savings for consumers. ●Total lifetime savings to consumers:$619,482. 6 UDAQ researched the retail cost for 2 types of common hoses certified by CARB.The cost for 8 ft low permeation hoses range from $304-$598 with a mean price of $451.Conventional comparable hoses range from $150-$394 (pricing was available from 3 manufacturers)with a mean price of $268.