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Subpart X

— Standards of Performance for the Phosphate Fertilizer Industry: Granular Triple Superphosphate Storage Facilities

Contents §60.240 Applicability and designation of affected facility. §60.241 Definitions. §60.242 Standard for fluorides. §60.243 Monitoring of operations. §60.244 Test methods and procedures.

§60.240 Applicability and designation of affected facility. (a) The affected facility to which the provisions of this subpart apply is each granular triple superphosphate storage facility For the purpose of this subpart, the affected facility includes any combination of: Storage or curing piles, conveyors, elevators, screens and mills. (b) Any facility under paragraph (a) of this section that

commences construction or mod ification after October 22, 1974, is subject to the requirements of this subpart. §60.241 Definitions. As used in this subpart, all terms not defined herein shall have the meaning given them in the Act and in subpart A of this part. (a) Granular triple su perphosphate storage facility means any facility curing or storing fresh granular triple superphosphate.P age 2 of 8

(b) Total fluorides means elemental fluorine and all fluoride compounds as measured by reference methods specified in §60.244, or equivalent or altern ative methods. (c) Equivalent P 2 O 5 stored means the quantity of phosphorus, expressed as phosphorus pentoxide, being cured or stored in the affected facility. (d) Fresh granular triple superphosphate means granular triple superphosphate produced within t he preceding 72 hours. §60.242 Standard for fluorides. (a) On and after the date on which the performance test required to be conducted by §60.8 is completed, no owner or operator subject to the provisions of this subpart shall cause to be discharged into the atmosphere from any affected facility any gases which contain total fluorides in excess of 0.25 g/hr/megagram (Mg) of equivalent P 2 O 5 stored (5.0 × 10 −4 lb/hr/ton of equivalent P 2 O 5 stored). (b) No owner or operator subject to the provisions of this

su bpart shall ship fresh granular triple superphosphate from an affected facility. §60.243 Monitoring of operations. (a) The owner or operator of any granular triple superphosphate storage facility subject to the provisions of this subpart shall maintain an accurate account of tripleP age 3 of 8

superphosphate in storage to permit the determination of the amount of equivalent P 2 O 5 s tored. (b) The owner or operator of any granular triple superphosphate storage facility subject to the provisions of this subpart shall maintain a daily record of total equivalent

P 2 O 5 stored by multiplying the percentage P 2 O 5 content, as determined by §6 0.244(c)(3), times the total mass of granular triple superphosphate stored. (c) Except as specified in paragraph ( e ) of this section,

t T he owner or operator of any granular triple superphosphate storage facility subject to the provisions of this subpart s hall install, calibrate, maintain, and operate a monitoring device which continuously measures and permanently records the total pressure drop across any process scrubbing system absorber . The monitoring device shall have an accuracy of ±5 percent over its operating range. (d) The owner or operator of any granular triple superphosphate storage facility subject to the provisions of this subpart shall develop for approval by the Administrator a

site

- specific methodology including sufficient recordkeeping for the purposes of demonstrating compliance with §60.242 (b). (e) A ny facility under § 60.2 40 ( a ) that commences construction, modification, or reconstruction after [ date of publication of the final rule in the F ederal R egister ] isP age 4 of 8

subject to the requirements of this paragraph instead of the requirements in paragraph (c) of this section

. If an absorber is used to comply with § 6 0

. 232, then the owner or operator shall continuously monitor pressure drop through the absorber and meet

t he requirements specified in paragraphs (e) ( 1 ) through (e) ( 4 )

of this section. (1) The owner or operator shall i nstall, calibrate, maintain, and operate a continuous monitoring system (CMS) that continuously measures and permanently records the pressure at the gas stream inlet and outlet of the absorber. T he pressure at the gas stream inlet of the absorber may be measured using amperage on the blower if a correlation between pressure and amperage is established

. (2) The CMS must have an accuracy of ± 5 perc ent over the normal range measured or 0.12 kilopascals (0.5 inches of water column), whichever is greater. (3) The owner or operator shall establish an allowable range for the pressure drop through the absorber. The allowable range is ±20 percent of the ar ithmetic average of the three test runs conducted during the performance test required in § 60.8. The Administrator retains the right to reduce the ±20 percent adjustment to the baseline average values of operating ranges in

those instances where performance test results indicate that a source's level of emissions is near the value of an applicableP age 5 of 8

emissions standard

. However, the adjustment must not be reduced to less than ±10 percent under any instance. (4) The owner or operator shall demonstrate continuous compliance by maintaining the daily average pressure drop through the absorber to within the allowable range established in paragraph (e)(3) of this section. The daily average pressure drop through the absorber for each operating day shall be

c alculated using the data recorded by the monitoring system. If the emissions unit operation is continuous, the operating day is

a 24

- hour period. If the emissions unit operation is not continuous, the operating day is the total number of hours of

control d evice operation per 24

- hour period. Valid data points must be available for 75 percent of the operating hours in an operating day to compute the daily average. §60.244 Test methods and procedures. (a) The owner or operator shall conduct performance tests required in §60.8 only when the following quantities of product are being cured or stored in the facility. (1) Total granular triple superphosphate is at least 10 percent of the building capacity, and (2) Fresh granular triple superphosphate is at least 6 percent of the total amount of triple superphosphate, or (3) If the provision in paragraph (a)(2) of this section exceeds production capabilities for fresh granular tripleP age 6 of 8

superphosphate, fresh granular triple superphosphate is equal to at least 5 days ma ximum production. (b) In conducting the performance tests required in §60.8, the owner or operator shall use as reference methods and procedures the test methods in appendix A of this part or other methods and procedures as specified in this section, excep t as provided in §60.8(b). (c) The owner or operator shall determine compliance with the total fluorides standard in §60.242 as follows: (1) The emission rate (E) of total fluorides shall be computed for each run using the following equation:

where:

E = emission rate of total fluorides, g/hr/Mg

(lb/hr/ton) of equivalent P 2 O 5 stored. C si = concentration of total fluorides from emission point

“i,” mg/dscm (gr/dscf). Q sdi = volumetric flow rate of effluent gas from emission

point “i,” dscm/hr (dscf/hr).

N = number of emission points in the affected facility. P = equivalent P 2 O 5 stored, metric tons (tons). K = conversion factor, 1000 mg/g (7,000 gr/lb). (2) Method 13A or 13B shall be used to determine the total fluorides concentration (C si ) and volumetric flow rate (Q sdi ) of the effluent gas from each of the emission points. The samplingP age 7 of 8

time and sample volume for each run shall be at least 60 minutes and 0.85 dscm (30 dscf). (3) The equivalent P 2 O 5 feed rate (P) shall be computed for each run using the fol lowing equation:

P=M p R p where:

M p = amount of product in storage, Mg (ton). R p = P 2 O 5 content of product in storage, weight fraction. (i) The accountability system of §60.243(a) shall be used to determine the amount of product (M p ) in storage. (ii) T he Association of Official Analytical Chemists (AOAC) Method 9 (incorporated by reference

— see §60.17) shall be used to

determine the P 2 O 5 content (R p ) of the product in storage.

E DITORIAL N OTE : At 65 FR 61757, Oct. 17, 2000, §60.244 (c)(1)

was amended. Ho wever, the instruction, which read in part, “revising the words “metric ton” the words “(453,600 mg/lb)” in the definition of the term “K” to read “(7,000 gr/lb).” . . . ” could not be incorporated because of inaccurate amendatory language. § 60.245 Recor dkeeping. Any facility under § 60.240(a) that commences construction, modification, or reconstruction after [ date of publication of the final rule in the Federal Register ] is subject to the requirements of this section. You must maintain the recordsP age 8 of 8

identi fied as specified in § 60.7(f) and in paragraphs (a) and (b) of this section. All records required by this subpart must be maintained onsite for at least 5 years. (a) Records of the daily average pressure drop through the

absorber. (b) Records of deviations. A deviation is determined to have occurred when the monitoring data or lack of monitoring data result in any one of the criteria specified in paragraphs (b)(1) and (b)(2) of this section being met. (1) A deviation occurs when the daily average value of a monitored operating parameter is less than the minimum pressure drop, or greater than the maximum pressure drop established in § 60.243(e)(3). (2) A deviation occurs when the monitoring data are not available for at least 75 percent of the opera ting hours in a day.