Restricted areas and regulatory standards based on the Odor Control Law

Established Notification No. 129 of May 31, 1973
Partial amendment of April 5, 1995 Notification No. 87

Act on the Prevention of Odors (Act No. 91 of 1971). Hereinafter referred to as "the law." Restricted areas based on the provisions of Article 3 and regulatory standards based on the provisions of Article 4 are defined as follows.

According to the provisions of Article 18, Paragraph 1 of the City Planning Act (Act No. 100 of 1968), the area shall be determined by the Governor of Kanagawa Prefecture as an urbanization area for the Yokohama International Port Construction Plan.

(1)　Regulatory Standards of Article 4, Item 1 of the Act

(2)　Regulatory Standards of Article 4, Item 2 of the Act

Odorous substances (ammonia, hydrogen sulfide, trimethylamin, propionaldehyde, Normalbutylaldehyde, isobutylaldehyde, Normal Valeraldehyde, isovaleraldehyde, isovaleraldehyde, isobutanol, ethyl acetate, and methyl hydrate, respectively).

q＝0.108×He2・Cm

In this equation, q, He and Cm shall represent the following values, respectively.

q Flow rate ( cubic meters per hour, converted to unit temperature zero and pressure of one pressure)
He The height of the outlet (unit meter) corrected by the method specified in the following a.
The value specified in item 1 of Cm (1) (unit ppm)

This expression shall not apply if the height of the discharge port corrected by the method specified in the following a is less than 5 meters.

(A) Correction of the height of the outlet shall be performed by the following formula.

He＝Ho＋0.65(Hm＋Ht)

Hm＝0.795√(Q・V)／(1＋2.58／V)

Ht＝2.01×10－3・Q・(T－288)・(2.30 logJ＋1／J－1)

J＝1／√(Q・V)(1,460－296×V／(T－288))＋1

In these expressions, He, Ho, Q, V and T shall represent the following values, respectively.

He The height of the corrected discharge port (unit meters)
The actual height of the Ho outlet (unit meters)
Q Flow rate of exhaust gas at a temperature of 15 degrees Celsius (unit cubic meters per second)
V emission rate of exhaust gas (unit meters per second)
T Temperature of exhaust gas (unit absolute temperature)

(3)　Regulatory Standards of Article 4, Item 3 of the Act

Concentrations calculated by the following formula for each type of odorous substances (limited to methyl mercaptan, hydrogen sulfide, methyl sulfide and methyl disulfide) specified in Paragraph 2, Item 1

CLm＝k×Cm

In this equation, CLm, k and Cm shall represent the following values, respectively.

Concentration in CLm discharge water (milligrams per liter)
k The values shown in the table below (milligrams per liter)
The value specified in item 1 of Cm (1) (unit ppm)

For methyl mercaptan, the standard value of the concentration in the discharged water when the calculated concentration value in the discharged water is less than 0.002 milligrams per liter is 0.002 milligrams per liter for the time being.