Common use of Opacity Clause in Contracts

Opacity. [326 IAC 2-9-7(b)(4)(F)] Fugitive particulate matter (PM) emissions shall be controlled by applying water on storage piles and unpaved roadways on an “as needed” basis, such that the following visible emission conditions are met: (a) The visible emissions from any storage pile shall not exceed twenty percent (20%) in twenty-four (24) consecutive readings in a six (6) minute period. This limitation shall not apply during periods when application of control measures are ineffective or unreasonable due to sustained high wind speeds. The opacity shall be determined using 40 CFR 60, Appendix A, Method 9, except that the opacity shall be observed at approximately four (4) feet from the surface at the point of maximum opacity. The observer shall stand approxi- mately fifteen (15) feet from the plume and at approximately right angles to the plume. (b) The visible emissions from unpaved roadways shall not exceed an average instantaneous opacity of twenty percent (20%). Average instantaneous opacity shall be the average of twelve (12) instantaneous opacity readings, taken for four (4) vehicle passes, consisting of three (3) opacity readings for each vehicle pass. The three (3) opacity readings for each vehicle pass shall be taken as follows: (1) The first reading shall be taken at the time of emission generation. (2) The second reading shall be taken five (5) seconds later. (3) The third reading shall be taken five (5) seconds after the second reading, or ten

Opacity. [326 IAC 2-9-7(b)(4)(F)8] Fugitive particulate matter (PM) emissions shall be controlled by applying water on all storage piles and unpaved roadways on an “as needed” basis, such that the following visible emission conditions are met: (a) The visible emissions from any storage pile shall not exceed twenty percent (20%) in twenty-four (24) consecutive readings in a six (6) minute period. This limitation shall not apply during periods when application of control measures are ineffective or unreasonable due to sustained high wind speeds. The opacity shall be determined using 40 CFR 60, Appendix A, Method 9, except that the opacity shall be observed at approximately four (4) feet from the surface at the point of maximum opacity. The observer shall stand approxi- mately approximately fifteen (15) feet feet, but no more than one-fourth (1/4) mile, from the plume and at approximately right angles to the plume. (b) The visible emissions from unpaved roadways shall not exceed an average instantaneous opacity of twenty percent (20%). Average instantaneous opacity shall be the average of twelve (12) instantaneous opacity readings, taken for four (4) vehicle passes, consisting of three (3) opacity readings for each vehicle pass. The three (3) opacity readings for each vehicle pass shall be taken as follows: (1) The first reading shall be taken at the time of emission generation. (2) The second reading shall be taken five (5) seconds laterafter the first. (3) The third reading shall be taken five (5) seconds after the second reading, or ten

Opacity. [326 IAC 2-9-7(b)(4)(F)7] Fugitive particulate matter (PM) emissions shall be controlled by applying water on storage piles and unpaved roadways on an “as needed” basis, such that the following visible emission conditions are met: (a) The visible emissions from any storage pile shall not exceed twenty percent (20%) in twenty-four (24) consecutive readings in a six (6) minute period. This limitation shall not apply during periods when application of control measures are ineffective or unreasonable due to sustained high wind speeds. The opacity shall be determined using 40 CFR 60, Appendix A, Method 9, except that the opacity shall be observed at approximately four (4) feet from the surface at the point of maximum opacity. The observer shall stand approxi- mately fifteen (15) feet from the plume and at approximately right angles to the plume. (b) The visible emissions from unpaved roadways shall not exceed an average instantaneous opacity of twenty percent (20%). Average instantaneous opacity shall be the average of twelve (12) instantaneous opacity readings, taken for four (4) vehicle passes, consisting of three (3) opacity readings for each vehicle pass. The three (3) opacity readings for each vehicle pass shall be taken as follows: (1) The first reading shall be taken at the time of emission generation. (2) The second reading shall be taken five (5) seconds later. (3) The third reading shall be taken five (5) seconds after the second reading, or ten

Opacity. [326 IAC 2-9-7(b)(4)(F)8] Fugitive particulate matter (PM) emissions shall be controlled by applying water on storage piles and unpaved roadways on an “as needed” basis, such that the following visible emission conditions are met: (a) The visible emissions from any storage pile shall not exceed twenty percent (20%) in twenty-four (24) consecutive readings in a six (6) minute period. This limitation shall not apply during periods when application of control measures are ineffective or unreasonable due to sustained high wind speeds. The opacity shall be determined using 40 CFR 60, Appendix A, Method 9, except that the opacity shall be observed at approximately four (4) feet from the surface at the point of maximum opacity. The observer shall stand approxi- mately approximately fifteen (15) feet from the plume and at approximately right angles to the plume. (b) The visible emissions from unpaved roadways shall not exceed an average instantaneous opacity of twenty percent (20%). Average instantaneous opacity shall be the average of twelve (12) instantaneous opacity readings, taken for four (4) vehicle passes, consisting of three (3) opacity readings for each vehicle pass. The three (3) opacity readings for each vehicle pass shall be taken as follows: (1) The first reading shall be taken at the time of emission generation. (2) The second reading shall be taken five (5) seconds later. (3) The third reading shall be taken five (5) seconds after the second reading, or ten