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27.76 Performance Standards

Sections:
27.76.010 Method of computing net rate of emission of particulate matter.
27.76.020 Allowance for height of emission.
27.76.030 Allowance for velocity of emission.
27.76.040 Allowance for temperature of emission.
27.76.050 Explosives.


27.76.010 METHOD OF COMPUTING NET RATE OF EMISSION OF PARTICULATE MATTER. The rate of emission of particulate matter from all sources within the boundaries of any lot shall not exceed the net figure in pounds per acre of lot area prescribed in the regulations for the manufacturing district in which the lot is located after deducting from the gross hourly emission per acre the correction factors set forth in the appropriate tables incorporated hereafter for height, velocity and temperature of emission. The method for determining the total net rate of emission of particulate matter within the boundaries of any lot shall be as follows:
(1)  Determine the maximum emission in pounds per hour from each source of emission within the lot boundaries and divide each figure by the number of acres of lot area, thereby obtaining the gross hourly rate of emission in pounds per acre for each source of emission;
(2)  From each gross hourly rate of emission derived in (1), deduct the appropriate correction factor (interpolating as required) for height, velocity, and temperature of emission as set forth in the tables which follow, in Sections 27.76.020 through 27.76.040, thereby obtaining the net rate of emission in pounds per acre of lot area for each source of emission;
(3)  Add together the individual net rate of emission derived in (2), to obtain the total net rate of emission within the boundaries of the lot. Such total shall not exceed the number of pounds per acre of lot area during any one hour prescribed as maximum for the district in which the lot is located. (Prior code § 153.01(A)).

27.76.020 ALLOWANCE FOR HEIGHT OF EMISSION.*

Height of Emission in Feet Above Grade


For M-1 Districts


For M-2 Districts

50

.00

.00

100

0.06

0.10

150

0.10

0.20

200

0.15

0.30

250

0.20

0.40

300

0.26

0.56

350

0.33

0.66

400

0.40

0.80

450

0.46

0.92

500

0.52

1.04

550

0.60

1.20

600

0.70

1.42

*Interpolate for intermediate values not shown in table.


(Prior code § 153.01(B)).

27.76.030 ALLOWANCE FOR VELOCITY OF EMISSION.* Particulate matter correction in pounds per hour per acre.

Exit Velocity in
Feet per Second


For M-1 Districts


For M-2 Districts

0

.0

.0

10

0.1

0.3

20

0.2

0.6

30

0.3

0.9

40

0.4

1.2

50

0.5

1.5

60

0.6

1.8

70

0.7

2.1

80

0.8

2.4

*Interpolate for intermediate values not shown in table.


(Prior code § 153.01(C)).

27.76.040 ALLOWANCE FOR TEMPERATURE OF EMISSION*. Particulate matter correction in pounds per hour per acre.

Temperature of Emission in Degrees of Fahrenheit


For M-1 Districts


For M-2 Districts

100

.00

.00

200

0.01

0.03

300

0.02

0.06

400

0.03

0.09

500

0.04

0.12

600

0.05

0.15

700

0.06

0.18

800

0.07

0.21

900

0.08

0.24

1000

0.09

0.27

1100

0.10

0.30

1200

0.11

0.33

1300

0.12

0.36

1400

0.13

0.39

1500

0.14

0.42

1600

0.15

0.45

1700

0.16

0.48

1800

0.17

0.51

1900

0.18

0.54

2000

0.19

0.57

*Interpolate for intermediate values not shown in table.


(Prior code § 153.01(D)).

27.76.050 EXPLOSIVES. For the purposes of this title, the list of materials or products which decompose by detonation includes, but is not limited to, the following:
(1)  Acetylides;
(2)  Azides;
(3)  Chlorates;
(4)  Dynamite;
(5)  Blasting gelatin;
(6)  Fulminates;
(7)  Anhydrous hydrazine;
(8)  Ammonium nitrate;
(9)  Dinitroresorcinol;
(10)  Dinitrotoluene;
(11)  Guanidine nitrate;
(12)  Guncotton (cellulose nitrate of pyroxylin);
(13)  Hexamine;
(14)  Nitroglycerin;
(15)  Petn. (pentaerythritoltetranitrate);
(16)  Picric acid;
(17)  Tetryl (trinitrophenylmethyltramine);
(18)  Cylonite or hexogen (trimethylene trinitramine);
(19)  Dinol;
(20)  Petryl;
(21)  TNT (trinitrotoluene);
(22)  Perchlorates (when mixed with carbonaceous materials);
(23)  Black powder;
(24)  Fireworks;
(25)  Greek fire;
(26)  Permanganates;
(27)  Peroxides.
(Prior code § 153.02).


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