formsc13g.htm
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(AMENDMENT NO.)

PAA Natural Gas Storage, L.P.
(Name of Issuer)
 
COMMON UNITS
(Title of Class of Securities)
 
693139107
(CUSIP Number)

Check the following box if a fee is being paid with this statement £. (A fee is not required only if the filing person: (1) has a previous statement on file reporting beneficial ownership of more than five percent of the class of securities described in Item 1; and (2) has filed no amendment subsequent thereto reporting beneficial ownership of five percent or less of such class.) (See Rule 13d-7.)

*The remainder of this cover page shall be filled out for a reporting person's initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter the disclosures provided in a prior cover page.

The information required in the remainder of this cover page shall not be deemed to be "filed" for the purpose of Section 18 of the Securities Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).
 
 
PAGE 1 OF 8
 

CUSIP NO. 693139107
13G
PAGE 2 OF 8 PAGES
1
NAME OF REPORTING PERSON
  
 
S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
  
     
 
(A) KAYNE ANDERSON CAPITAL ADVISORS, L.P. - 95-4486379
  
 
(B) RICHARD A. KAYNE
  
2
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
(a) £
   
(b) £
3
SEC USE ONLY
  
4
CITIZENSHIP OR PLACE OF ORGANIZATION
  
     
 
IS A CALIFORNIA LIMITED PARTNERSHIP
  
 
5
SOLE VOTING POWER
   
(A) 0
NUMBER OF
  
(B) 11,000
SHARES
6
SHARED VOTING POWER
BENEFICIALLY
  
(A) 5,196,497
OWNED BY
  
(B) 5,196,497
EACH REPORTING
7
SOLE DISPOSITIVE POWER
PERSON WITH
  
(A) 0
   
(B) 11,000
 
8
SHARED DISPOSITIVE POWER
   
(A) 5,196,497
   
(B) 5,196,497
9
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON*
  
 
(A) 5,196,497
  
 
(B) 5,207,497
  
10
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN
  
 
SHARES*
£
11
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
  
 
(A) 16.45%
  
 
(B) 16.49%
  
12
TYPE OF REPORTING PERSON*
  
 
(A) IA
  
 
(B) IN
  

*SEE INSTRUCTIONS BEFORE FILLING OUT!

 
PAGE 2 OF 8
 

United States
Securities and Exchange Commission

Schedule 13G

*********************

Item 1.
(a)
Issuer:
PAA Natural Gas Storage, L.P.
 
(b)
Address:
333 Clay Street, Suite 1500
     
Houston, TX 77002
         
Item 2.
(a)
Filing Persons:
Kayne Anderson
Richard A. Kayne
     
Capital Advisors, L.P.
         
 
(b)
Addresses:
1800 Avenue of the Stars,
1800 Avenue of the Stars,
     
Second Floor
Second Floor
     
Los Angeles, CA  90067
Los Angeles, CA 90067
         
 
(c)
Citizenship:
Kayne Anderson Capital Advisors, L.P. is a California limited partnership
     
Richard A. Kayne is a U.S. Citizen
         
 
(d)
Title of Class
    
   
of Securities:
Common Units
         
 
(e)
Cusip Number:
693139107
         
Item 3.
If this statement is filed pursuant to Rule 13d-1(b) or 13d-2(b), check whether the person filing is a:
         
 
(e)
Kayne Anderson Capital Advisors, L.P., is an investment adviser registered under section 203 of the Investment Advisers Act of 1940.
         
         
Item 4.
Ownership
      
         
 
(a)
Amount Beneficially Owned:
         
   
Kayne Anderson Capital Advisors, L.P. Managed Accounts
5,196,497
   
Richard A. Kayne
5,208,497
         
 
(b)
Percent of Class:
(A)16.45%
       
(B)16.49%
         
 
(c)
Number of shares as to which such person has:
  
       
   
(i) sole power to vote or direct to vote
(A) 0
       
(B) 11,000
   
(ii) Shared power to vote or direct the vote
(A) 5,196,497
       
(B) 5,196,497
   
(iii) sole power to dispose or direct the disposition
(A)          0
       
(B) 11,000
   
(iv) shared power to dispose or direct the disposition of
(A) 5,196,497
       
(B) 5,196,497

 
PAGE 3 OF 8
 

United States
Securities and Exchange Commission

Schedule 13G

PAA Natural Gas Storage, L.P. (Issuer)
**************************

Item 5.
Ownership of Five Percent or Less of a Class
If this statement is being filed to report the fact that as of the date hereof the reporting persons have ceased to be the beneficial owner of more than five percent of the class of securities, check the following  £.
Not applicable.

Item 6.
Ownership of More than Five Percent on Behalf of Another Person.
Not applicable.

Item 7.
Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on By the Parent Holding Company
Not applicable.

Item 8.
Identification and Classification of Members of the Group
Not applicable

Item 9.
Notice of Dissolution of Group
Not applicable

Item 10.
Certification
By signing below we certify that, to the best of our knowledge and belief, the securities referred to above were acquired in the ordinary course of business and were not acquired for the purpose of and do not have the effect of changing or influencing the control of the issuer of such securities and were not acquired in connection with or as a participant in any transaction having such purposes or effect.

 
PAGE 4 OF 8
 

United States
Securities and Exchange Commission

Schedule 13G

PAA Natural Gas Storage, L.P. (Issuer)
**************************

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

February 14, 2011
  
Date
  
   
/S/ RICHARD A. KAYNE
  
Richard A. Kayne
  

KAYNE ANDERSON CAPITAL ADVISORS, L.P.

By:
Kayne Anderson Investment Management, Inc.
       
 
By:
/S/ DAVID J. SHLADOVSKY
  
   
David J. Shladovsky, Secretary

 
PAGE 5 OF 8
 

JOINT FILING AGREEMENT PURSUANT TO RULE 13d-1(f)(1)

This agreement is made pursuant to Rule 13d-1(f)(1) under the Securities Exchange Act of 1934 (the “Act”) by and between the parties listed below, each referred to herein as a “Joint Filer.” The Joint Filers agree that a statement of beneficial ownership as required by Section 13(d) of the Act and the Rules thereunder may be filed on each of their behalf on Schedule 13D or Schedule 13G, as appropriate, and that said joint filing may thereafter be amended by further joint filings.  The Joint Filers state that they each satisfy the requirements for making a joint filing under Rule 13d-1.

February 14, 2011
  
Date
  
   
/S/ RICHARD A. KAYNE
  
Richard A. Kayne
  

KAYNE ANDERSON CAPITAL ADVISORS, L.P.

By:
Kayne Anderson Investment Management, Inc.
       
 
By:
/S/ DAVID J. SHLADOVSKY
  
   
David J. Shladovsky, Secretary

 
PAGE 6 OF 8
 

United States
Securities and Exchange Commission

Schedule 13G
 (cover page)
PAA Natural Gas Storage, L.P. (Issuer)
**************************


Box 9.
The reported units are owned by investment accounts (investment limited partnerships, a registered investment company and institutional accounts) managed, with discretion to purchase or sell securities, by Kayne Anderson Capital Advisors, L.P., as a registered investment adviser.

Kayne Anderson Capital Advisors, L.P. is the general partner (or general partner of the general partner) of the limited partnerships and investment adviser to the other accounts. Richard A. Kayne is the controlling shareholder of the corporate owner of Kayne Anderson Investment Management, Inc., the general partner of Kayne Anderson Capital Advisors, L.P. Mr. Kayne is also a limited partner of each of the limited partnerships and a shareholder of the registered investment company.  Kayne Anderson Capital Advisors, L.P. disclaims beneficial ownership of the units reported, except those units attributable to it by virtue of its general partner interests in the limited partnerships.  Mr. Kayne disclaims beneficial ownership of the units reported, except those units held by him or attributable to him by virtue of his limited partnership interests in the limited partnerships, his indirect interest in the interest of Kayne Anderson Capital Advisors, L.P. in the limited partnerships, and his ownership of common stock of the registered investment company.

 
PAGE 7 OF 8
 

UNDERTAKING

The undersigned agree jointly to file the attached Statement of Beneficial Ownership on Schedule 13G with the U.S. Securities Exchange Commission and PAA Natural Gas Storage, L.P.

Dated:  February 14, 2011

/S/ RICHARD A. KAYNE
  
Richard A. Kayne
  

KAYNE ANDERSON CAPITAL ADVISORS, L.P.

By:
Kayne Anderson Investment Management, Inc.
       
 
By:
/S/ DAVID J. SHLADOVSKY
  
   
David J. Shladovsky, Secretary
 
 
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