Code of Federal Regulations Title 40. Protection of Environment § 40.63.8243 What equations and procedures must I use to demonstrate continuous compliance?

(1) Each week, you must determine the weekly mercury emission rate in grams per week for each by-product hydrogen stream and for each end box ventilation system vent, if applicable, using one of the monitoring options in paragraph (a)(1)(i) or (ii) of this section.

(2) Each week, you must determine the chlorine production and keep records of the production rate as required under § 63.8256(b)(6).

(3) Beginning 52 weeks after the compliance date specified in § 63.8186 for your affected source, you must calculate the 52–week average mercury emission rate from all by-product hydrogen steam and all end box ventilation system vents, if applicable, using Equation 1 of this section as follows:

(1) You must calculate the daily average mercury concentration using Equation 2 of this section as follows:

Where:

C_{Hg, dailyavg} = Average mercury concentration for the operating day, milligrams per dry standard cubic meter;

C_Hg,i = Concentration of mercury measured at the interval i (i.e., 15 minute reading) using a mercury continuous emission monitor, milligrams per dry standard cubic meter;  and

n = Number of concentration measurements taken during the operating day.

(2) You must calculate the daily average mercury concentration using the procedures in § 63.8234(b).