40 CFR 1090.745: Informational annual average calculations.

(a) A gasoline manufacturer must calculate and report annual average sulfur and benzene concentrations for each of their facilities as specified in this section. The values calculated and reported under this section are not used to demonstrate compliance with average standards under this part.

(b) A gasoline manufacturer must calculate and report their unadjusted average sulfur concentration as follows:

Equation 1 to paragraph (b)

Where:

Savg,y = Facility unadjusted average sulfur concentration for compliance period y, in ppm. Round and report Savg,y to two decimal places.

Vi = Volume of gasoline produced or imported in batch i, in gallons.

Si = Sulfur content of batch i, in ppm.

i = Individual batch of gasoline produced or imported during the compliance period.

n = Number of batches of gasoline produced or imported during the compliance period.

Vtot = Total volume of gasoline produced or imported during the compliance period, in gallons.

(c) A gasoline manufacturer must calculate and report their net average sulfur concentration as follows:

Equation 2 to paragraph (c)

Where:

Snet_avg,y = Facility net average sulfur concentration for compliance period y, in ppm. Round and report Snet_avg,y to two decimal places.

CSVy = Compliance sulfur value for compliance period y, per § 1090.700(a)(1), in ppm-gallons.

Vtot = Total volume of gasoline produced or imported during the compliance period, in gallons.

(d) A gasoline manufacturer must calculate and report their net average benzene concentration as follows:

Equation 3 to paragraph (d)

Where:

Bnet_avg,y = Facility net average benzene concentration for compliance period y, in volume percent. Round and report Bnet_avg,y to two decimal places.

CBVy = Compliance benzene value for compliance period y, per § 1090.700(b)(1)(i), in benzene gallons.

Vtot = Total volume of gasoline produced or imported during the compliance period, in gallons.