Relative Humidity. Relative humidity was measured using an aspirated Climatronics 102425 lithium chloride sensor. The manufacturer-reported accuracy is less than ±3% RH in the range 10-90% RH. A DRI site audit in October 2002 included collocation of a continuously measuring Vaisala HMP35C sensor. Figure 5-1d shows the collocated hourly data. A reduced major axis regression yielded: Audit = (0.98 ± 0.02)× Site + (0.8 ± 1.1 %RH ) The regression slope is statistically indistinguishable from unity and the intercept is statistically indistinguishable from zero (95% CL). Collocated precision was 1.1% RH (1.8% relative precision) for the 63 hours of collocated data, meeting the manufacturer-reported accuracy of less than ±3% RH. Wind Speed Wind speed was measured using a Climatronics 102083-G0-H0 (Wind Mark III series) anemometer at 10m. The manufacturer-reported accuracy is ±0.11 m/s or 1.5% with starting threshold less than 0.45 m/s. A DRI site audit in October 2002 included an evaluation of the sensor’s starting threshold using a torque wheel at a torque of 0.3 g/cm. The sensor shaft was turned at five constant speeds (0-1000 RPM) and the site sensor speed was regressed on the torque wheel speed using an ordinary linear least squares regression yielding (R2 = 1.000): Site = (0.99)× Audit + (0.09 mph) An additional check was performed by comparing the hourly-average wind speeds between the Supersite in East St. Louis and an IEPA site in Edwardsville, IL (both measurements at 10m). Data was screened to focus on advective conditions with 1,418 hours at Edwardsville exceeding 4 m/s for the period 5/8/2001-6/30/2002. A reduced major axis regression yielded (R2 = 0.693): WSEdwardsville = (1.00 ± 0.03)×WSSupersite + (0.1± 0.1 m / s) For advective conditions, there is excellent agreement between the 10m wind speeds measured at these two sites separated by ~30 km.
Relative Humidity. Relative humidity shall be maintained at 40-60% where practical.
Relative Humidity a. Test Method: Perform relative humidity test using in situ probes according to ASTM F 2170. b. Acceptable Results: Not more than 75 percent.
Relative Humidity. A value of 100% relative humidity was used, and was only applicable for the emission modeling. It is important to note that for temperatures of 75 degrees Fahrenheit and below relative humidity has no effect on CO emission rates. Table 4.1 - MOVES input parameters by scenario Parameter Freeway Arterial Intersection Scale Project Level Domain Project Level Domain Project Level Domain Year 0000 0000 0000 Month January January January Time Span - Hour 12:00 AM 12:00 AM 12:00 AM Time Span - Day Weekday Weekday Weekday Geographic Bounds Custom Domain Custom Domain Custom Domain Temperature -10° Fahrenheit -10° Fahrenheit -10° Fahrenheit Relative Humidity 100% 100% 100% Fuel Formulation Gasoline – Formulation ID - 3812 Gasoline – Formulation ID - 3812 Gasoline – Formulation ID - 3812 Diesel – Formulation ID - 20011 Diesel – Formulation ID - 20011 Diesel – Formulation ID - 20011 CNG – Formulation ID - 30 CNG – Formulation ID - 30 CNG – Formulation ID - 30 Fleet Mix Emission Source Type and Fuel Combinations for 2015 with a Shift to 0% Heavy-Duty Truck Volumes to Reflect Higher CO emission Rates from Gasoline Vehicles (refer to through Table 4.4 - Table C-6)) Emission Source Type and Fuel Combinations for 2015 with a Shift to 0% Heavy-Duty Truck Volumes to Reflect Higher CO emission Rates from Gasoline Vehicles (refer to Table 4.4 - Table C-6) Emission Source Type and Fuel Combinations for 2015 with a Shift to 0% Heavy-Duty Truck Volumes to Reflect Higher CO emission Rates from Gasoline Vehicles (refer to Table 4.4 - Table C-6)) Age Distribution 2015 National Default 2015 National Default 2015 National Default Link Source Type Distribution Variable - Based on 2015 National Default VMT for Urban Restricted Access Road Type Variable - Based on 2015 National Default VMT for Urban Unrestricted Access Road Type Variable - Based on 2015 National Default VMT for Urban Unrestricted Access Road Type Road Type Urban and Rural Restricted Access Urban and Rural Unrestricted Access Urban and Rural Unrestricted Access Link Average Speed 74 mph 45 mph 15, 25 and 35 mph approach and idle (intersection) Grade ±7% , ±4%, ± 2%, ± 0% (uphill and downhill grade) ±4%, ± 2%, ± 0% (uphill and downhill grade) ± 2% (cross direction) and 0% grade in other direction (intersection) Inspection & Maintenance None None None
Relative Humidity. A value of 100% relative humidity was used and was only applicable for the emission modeling, which yields the highest CO emission rates for any temperature over 75 degrees Fahrenheit.
Relative Humidity. LESSOR warrants that the Leased Premises are served by heating, cooling and other facilities of a design capacity sufficient to maintain the Leased Premises at a humidity level within the range of 20% - 60% relative humidity, assuming optimal use of the thermostats and other climate control devices, such as the opening or closing of blinds, doors and vents, within the Leased Premises.
