[Code of Federal Regulations]
[Title 40, Volume 15]
[Revised as of July 1, 2003]
From the U.S. Government Printing Office via GPO Access
[CITE: 40CFR81.161]

[Page 40-41]
 
                   TITLE 40--PROTECTION OF ENVIRONMENT
 
         CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED)
 
PART 81--DESIGNATION OF AREAS FOR AIR QUALITY PLANNING PURPOSES--Table of Contents
 
          Subpart B--Designation of Air Quality Control Regions
 
Sec. 81.161  North Coast Intrastate Air Quality Control Region.

    The North Coast Intrastate Air Quality Control Region (California) 
consists of the territorial area encompassed by the boundaries of the 
following jurisdictions or described area (including the territorial 
area of all municipalities (as defined in section 302(f) of the Clean 
Air Act, 42 U.S.C. 1857h(f)) geographically located within the outermost 
boundaries of the area so delimited):

    In the State of California: Del Norte County, Humboldt County, 
Mendocino County, Trinity County.
    Sonoma County--that portion of Sonoma County which lies north and 
west of a line described as follows: Beginning at the southeasterly 
corner of the Rancho Estero Americano, being on the boundary line 
between Marin and Sonoma counties, California; thence running northerly 
along the easterly boundary line of said Rancho Estero Americano to the 
northeasterly corner thereof, being an angle corner in the westerly 
boundary line of Rancho Canada de Jonive; thence running along said 
boundary of Rancho Canada de Jonive westerly, northerly and easterly to 
its intersection with the easterly line of Graton Road; thence running 
along the easterly and southerly line of Graton Road, northerly and 
easterly to its intersection with the easterly line of Sullivan Road; 
thence running northerly along said easterly line of Sullivan Road to 
the southerly line of Green Valley Road; thence running easterly along 
the said southerly line of Green Valley Road and easterly along the 
southerly line of State highway 116, to the westerly line of Vine Hill 
Road; thence running along the westerly and northerly line of Vine Hill 
Road, northerly and easterly to its intersection with the westerly line 
of Laguna Road; thence running northerly along the westerly line of 
Laguna Road and the northerly projection thereof to the northerly line 
of Trenton Road; thence running westerly along the northerly line of 
said Trenton Road to the easterly line of Trenton-Healdsburg Road; 
thence running northerly along said easterly line of Trenton-Healdsburg 
Road to the easterly line of Eastside Road; thence running northerly 
along said easterly line of Eastside Road to its intersection with the 
southerly line of Rancho Sotoyome; thence running easterly along said 
southerly line of Rancho Sotoyome to is intersection with the township 
line common to Townships 8 and 9 North, Mt. Diablo Base and Meridian; 
thence

[[Page 41]]

running easterly along said township line to its intersection with the 
boundary line between Sonoma and Napa Counties, State of California.

[36 FR 22421, Nov. 25, 1971, as amended at 46 FR 3890, Jan. 16, 1981]