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

SCHEDULE 13G

Under the Securities Exchange Act of 1934
(Amendment No.___)*

Infrasource Services, Inc.

(Name of Issuer)

Common Stock, $0.001 par value

(Title of Class of Securities)

45684P102

(CUSIP Number)

August 11, 2005

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

        o Rule 13d-1 (b)

        þ Rule 13d-1 (c)

        o Rule 13d-1 (d)

*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 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).

Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB control number.

 

 

             
13G
CUSIP No. 45684P102
  1. Name of Reporting Person:
Martin Maslonka		 I.R.S. Identification Nos. of above persons (entities only):
030523754
  2. Check the Appropriate Box if a Member of a Group:
    (a) o  
    (b) o  
  3. SEC Use Only:
  4. Citizenship or Place of Organization:
United States
Number of
Shares
Beneficially
Owned by
Each Reporting
Person With
5. Sole Voting Power:
2,449,124
6. Shared Voting Power:
0
7. Sole Dispositive Power:
2,449,124
8.Shared Dispositive Power:
0
  9.Aggregate Amount Beneficially Owned by Each Reporting Person:
2,449,124
  10.Check if the Aggregate Amount in Row (9) Excludes Certain Shares:
o
  11.Percent of Class Represented by Amount in Row (9):
6.22%
  12.Type of Reporting Person:
IN

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ITEM 1(a).
  NAME OF ISSUER.
 
    
 
  InfraSource Services, Inc.
 
    
ITEM 1(b).
  ADDRESS OF ISSUER’S PRINCIPAL EXECUTIVE OFFICES:
 
    
 
  100 West Sixth Street, Suite 300
Media, Pennsylvania 19063
 
    
ITEM 2(a).
  NAME OF PERSON FILING.
 
    
 
  Martin Maslonka
 
    
ITEM 2(b).
  ADDRESS OF PRINCIPAL BUSINESS OFFICE OR, IF NONE, RESIDENCE.
 
    
 
  4143 E. Quartz Circle
Mesa, AZ 85215
 
    
ITEM 2(c).
  CITIZENSHIP:
 
    
 
  United States
 
    
ITEM 2(d).
  TITLE OF CLASS OF SECURITIES.
 
    
 
  Common Stock, par value $0.001 per share (“Common Stock”)
 
    
ITEM 2(e).
  CUSIP NUMBER:
 
    
 
  45684P102
 
    
ITEM 3.
  IF THIS STATEMENT IS FILED PURSUANT TO RULE 13d-1(b),OR
13d-2(b) OR (c), CHECK WHETHER THE PERSON FILING IS A: N/A
             
ITEM 4.
  OWNERSHIP.
 
            
 
  (a)   Amount beneficially owned:
 
    
 
      2,449,124 shares of Common Stock

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  (b)          Percent of Class:
 
    
 
      6.22% as of the date of filing this statement. (Based on 39,395,785 shares of Common Stock issued and outstanding as of August 5, 2005, according to the Issuer’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2005)
 
    
 
  (c)   Number of shares as to which the person has:
 
    
 
      (i)   Sole power to vote or to direct the vote:
 
    
 
          2,449,124
 
    
 
      (ii)   Shared power to vote or to direct the vote:
 
    
 
          0
 
    
 
      (iii)   Sole power to dispose or to direct the disposition of:
 
    
 
          2,449,124
 
    
 
      (iv)   Shared power to dispose or to direct the disposition of:
 
    
 
          0
     
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 person has ceased to be the beneficial owner of more than five percent of the class of securities, check the following.
 
    
 
  N/A
 
    
ITEM 6.
  OWNERSHIP OF MORE THAN FIVE PERCENT ON BEHALF OF ANOTHER PERSON.
 
    
 
  N/A
 
    
ITEM 7.
  IDENTIFICATION AND CLASSIFICATION OF THE SUBSIDIARY WHICH ACQUIRED THE SECURITY BEING REPORTED ON BY THE PARENT HOLDING COMPANY OR CONTROL PERSON.
 
    
 
  N/A

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ITEM 8.
  IDENTIFICATION AND CLASSIFICATION OF MEMBERS OF THE GROUP.
 
    
 
  N/A
 
    
ITEM 9.
  NOTICE OF DISSOLUTION OF GROUP.
 
    
 
  N/A
 
    
ITEM 10.
  CERTIFICATIONS.
 
    
 
  By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect.
 
    
 
  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.
         
     
October 1, 2005  /s/ Martin Maslonka    
  Martin Maslonka   
     
 

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