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</LabelSeparator><Level>1</Level><ElementName>us-gaap_RelatedPartyTransactionsAbstract</ElementName><ElementPrefix>us-gaap_</ElementPrefix><IsBaseElement>true</IsBaseElement><BalanceType>na</BalanceType><PeriodType>duration</PeriodType><IsReportTitle>false</IsReportTitle><IsSegmentTitle>false</IsSegmentTitle><IsCalendarTitle>false</IsCalendarTitle><IsEquityPrevioslyReportedAsRow>false</IsEquityPrevioslyReportedAsRow><IsEquityAdjustmentRow>false</IsEquityAdjustmentRow><IsBeginningBalance>false</IsBeginningBalance><IsEndingBalance>false</IsEndingBalance><IsReverseSign>false</IsReverseSign><FootnoteIndexer /><Cells><Cell FlagID="0" ContextID="" UnitID=""><Id>1</Id><IsNumeric>false</IsNumeric><IsRatio>false</IsRatio><DisplayZeroAsNone>false</DisplayZeroAsNone><NumericAmount>0</NumericAmount><RoundedNumericAmount>0</RoundedNumericAmount><NonNumbericText /><FootnoteIndexer /><CurrencyCode /><CurrencySymbol /><IsIndependantCurrency>false</IsIndependantCurrency><ShowCurrencySymbol>false</ShowCurrencySymbol><DisplayDateInUSFormat>false</DisplayDateInUSFormat></Cell></Cells><ElementDataType>xbrli:stringItemType</ElementDataType><SimpleDataType>string</SimpleDataType><IsTotalLabel>false</IsTotalLabel><UnitID>0</UnitID><Label>Related Party Transactions [Abstract]</Label></Row><Row FlagID="0"><Id>2</Id><IsAbstractGroupTitle>false</IsAbstractGroupTitle><LabelSeparator>

</LabelSeparator><Level>2</Level><ElementName>us-gaap_RelatedPartyTransactionsDisclosureTextBlock</ElementName><ElementPrefix>us-gaap_</ElementPrefix><IsBaseElement>true</IsBaseElement><BalanceType>na</BalanceType><PeriodType>duration</PeriodType><IsReportTitle>false</IsReportTitle><IsSegmentTitle>false</IsSegmentTitle><IsCalendarTitle>false</IsCalendarTitle><IsEquityPrevioslyReportedAsRow>false</IsEquityPrevioslyReportedAsRow><IsEquityAdjustmentRow>false</IsEquityAdjustmentRow><IsBeginningBalance>false</IsBeginningBalance><IsEndingBalance>false</IsEndingBalance><IsReverseSign>false</IsReverseSign><PreferredLabelRole>terseLabel</PreferredLabelRole><FootnoteIndexer /><Cells><Cell FlagID="0" ContextID="P01_01_2013To06_30_2013" UnitID=""><Id>1</Id><IsNumeric>false</IsNumeric><IsRatio>false</IsRatio><DisplayZeroAsNone>false</DisplayZeroAsNone><NumericAmount>0</NumericAmount><RoundedNumericAmount>0</RoundedNumericAmount><NonNumbericText>              &lt;div style="clear:both; FONT-FAMILY:Times New Roman;FONT-SIZE: 10pt;MARGIN: 0pt 0px; FONT: 10pt Times New Roman, Times, Serif "&gt;  &lt;div style="clear:both; FONT-FAMILY:Times New Roman;FONT-SIZE: 10pt;TEXT-ALIGN: justify; MARGIN: 0pt 0px; FONT: 10pt Times New Roman, Times, Serif"&gt;  &lt;strong&gt;NOTE K &amp;#151; RELATED PARTY TRANSACTIONS&lt;/strong&gt;&lt;/div&gt;    &lt;div style="clear:both; FONT-FAMILY:Times New Roman;FONT-SIZE: 10pt"&gt;&lt;font  size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/div&gt;    &lt;div style="clear:both; FONT-FAMILY:Times New Roman;FONT-SIZE: 10pt;TEXT-ALIGN: justify; MARGIN: 0pt 0px 0pt 13.5pt; FONT: 10pt Times New Roman, Times, Serif"&gt;  The General Partner has a legal duty to manage the Partnership in a  manner beneficial to the Partnership&amp;#8217;s Unitholders. However,  the General Partner also has a legal duty to manage its affairs in  a manner that benefit its members. This can create a conflict of  interest between the Unitholders of the Partnership and the members  of the General Partner. The Partnership Agreement provides certain  requirements for the resolution of conflicts, but also limits the  liability and reduces the fiduciary duties of the General Partner  to the Unitholders. The Partnership Agreement also restricts the  remedies available to Unitholders for actions that might otherwise  constitute breaches of the General Partner&amp;#8217;s fiduciary  duty.&lt;/div&gt;    &lt;div style="clear:both; FONT-FAMILY:Times New Roman;FONT-SIZE: 10pt"&gt;&lt;font  size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/div&gt;    &lt;div style="clear:both; FONT-FAMILY:Times New Roman;FONT-SIZE: 10pt;TEXT-ALIGN: justify; MARGIN: 0pt 0px 0pt 13.5pt; FONT: 10pt Times New Roman, Times, Serif"&gt;  &lt;strong&gt;Advances from General Partner&lt;/strong&gt;&lt;/div&gt;    &lt;div style="clear:both; FONT-FAMILY:Times New Roman;FONT-SIZE: 10pt"&gt;&lt;font  size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/div&gt;    &lt;div style="clear:both; FONT-FAMILY:Times New Roman;FONT-SIZE: 10pt;TEXT-ALIGN: justify; MARGIN: 0pt 0px 0pt 13.5pt; FONT: 10pt Times New Roman, Times, Serif"&gt;  During the year ended December 31, 2011 and the nine months ended  September 30, 2012, the General Partner made cash advances to the  Partnership of $&lt;font style=" FONT-SIZE: 10pt"&gt;955,000&lt;/font&gt; and  $&lt;font style=" FONT-SIZE: 10pt"&gt;30,000&lt;/font&gt;, respectively, for  the purpose of funding working capital. &lt;font style="COLOR: #262626"&gt;On September 14, 2012, a Super-Majority of the  Members, as defined in the Second Amended and Restated Limited  Liability Company Agreement of the General Partner, dated April 12,  2011, as amended (&amp;#8220;&lt;u&gt;Agreement&lt;/u&gt;&amp;#8221;), approved the  issuance and sale by the General Partner of 12,000 additional  Membership Interests of the General Partner (&amp;#8220;&lt;u&gt;Additional  Interests&lt;/u&gt;&amp;#8221;) at a purchase price of $&lt;font style=" FONT-SIZE: 10pt"&gt;50.00&lt;/font&gt; per unit, pursuant to Sections  3.2(a) and 6.13(a) of the Agreement (&amp;#8220;&lt;u&gt;GP Sale&lt;/u&gt;&amp;#8221;).  The Additional Interests were purchased by all the existing members  of the General Partner, except 144 units offered to one existing  member (&amp;#8220;&lt;u&gt;Unsubscribed Units&lt;/u&gt;&amp;#8221;), in accordance  with their pro rata ownership of the General Partner. In accordance  with the Agreement, the General Partner offered the Unsubscribed  Units to those members whom participated in the GP Sale for which  those members also purchased their pro rata portion of the  Unsubscribed Units.&lt;/font&gt;&lt;/div&gt;    &lt;div style="clear:both; FONT-FAMILY:Times New Roman;FONT-SIZE: 10pt"&gt;&lt;font  size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/div&gt;    &lt;div style="clear:both; FONT-FAMILY:Times New Roman;FONT-SIZE: 10pt;TEXT-ALIGN: justify; MARGIN: 0pt 0px 0pt 13.5pt; FONT: 10pt Times New Roman, Times, Serif"&gt;  &lt;font style="COLOR: #262626"&gt;As of December 31, 2012 and June 30,  2013, $&lt;font style=" FONT-SIZE: 10pt"&gt;434,000&lt;/font&gt; and $&lt;font  style=" FONT-SIZE: 10pt"&gt;73,000&lt;/font&gt;, respectively, of the net  proceeds from the GP Sale, which totaled $&lt;font style=" FONT-SIZE: 10pt"&gt;507,000&lt;/font&gt; (after the offset of $&lt;font  style=" FONT-SIZE: 10pt"&gt;93,000&lt;/font&gt; of prior advances from  Messrs. Anbouba and Montgomery that were applied towards their  purchase price amounts due in connection with the GP Sale) were  used by the General Partner to fund working capital requirements of  the Partnership, including the payment of certain outstanding  obligations. All funds advanced to the Partnership by the General  Partner since November 17, 2010 have been treated as a loan  pursuant to the terms&lt;/font&gt; of an intercompany demand promissory  note effective March 1, 2012. The intercompany demand note provides  for advances from time to time by the General Partner to the  Partnership of up to $&lt;font style=" FONT-SIZE: 10pt"&gt;2,000,000&lt;/font&gt;. Repayment of such advances,  together with accrued and unpaid interest, is to be made in 12  substantially equal quarterly installments starting with the  quarter ended March 31, 2016. The note bears interest at the  imputed rate of the IRS for medium term notes. The rate at June 1,  2013 is &lt;font style=" FONT-SIZE: 10pt"&gt;0.95&lt;/font&gt;% per annum and  such rate is adjusted monthly by the IRS under IRB 625. At June 30,  2013, the total amount owed to the General Partner by the  Partnership, including accrued interest, was $&lt;font style=" FONT-SIZE: 10pt"&gt;1,591,000&lt;/font&gt;.&lt;/div&gt;    &lt;div style="clear:both; FONT-FAMILY:Times New Roman;FONT-SIZE: 10pt"&gt;&lt;font  size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/div&gt;    &lt;div style="clear:both; FONT-FAMILY:Times New Roman;FONT-SIZE: 10pt;TEXT-ALIGN: justify; MARGIN: 0pt 0px 0pt 13.5pt; FONT: 10pt Times New Roman, Times, Serif"&gt;  &lt;strong&gt;Intercompany Loans and Receivables&lt;/strong&gt;&lt;/div&gt;    &lt;div style="clear:both; FONT-FAMILY:Times New Roman;FONT-SIZE: 10pt"&gt;&lt;font  size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/div&gt;    &lt;div style="clear:both; FONT-FAMILY:Times New Roman;FONT-SIZE: 10pt;TEXT-ALIGN: justify; MARGIN: 0pt 0px 0pt 13.5pt; FONT: 10pt Times New Roman, Times, Serif"&gt;  &lt;em&gt;Regional Acquisition Funding&lt;/em&gt;&lt;/div&gt;    &lt;div style="clear:both; FONT-FAMILY:Times New Roman;FONT-SIZE: 10pt"&gt;&lt;font  size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/div&gt;    &lt;div style="clear:both; FONT-FAMILY:Times New Roman;FONT-SIZE: 10pt;TEXT-ALIGN: justify; MARGIN: 0pt 0px 0pt 13.5pt; FONT: 10pt Times New Roman, Times, Serif"&gt;  In connection with the Regional acquisition, on July 26, 2007  Regional issued to the Partnership a promissory note in the amount  of $&lt;font style=" FONT-SIZE: 10pt"&gt;2,500,000&lt;/font&gt;  (&amp;#8220;&lt;u&gt;Central Promissory Note&lt;/u&gt;&amp;#8221;) in connection with  the remaining funding needed to complete the acquisition of  Regional. Interest on the Central Promissory Note is &lt;font style=" FONT-SIZE: 10pt"&gt;10&lt;/font&gt;% annually and such interest is payable  quarterly. The Central Promissory Note is due on demand. Regional  has not made an interest payment on the Central Promissory Note  since its inception. Interest is accruing but unpaid. The balance  on the note at June 30, 2013 is $&lt;font style=" FONT-SIZE: 10pt"&gt;3,983,000&lt;/font&gt;. The payment of this amount is  subordinated to the payment of the Hopewell Note by Regional.&lt;/div&gt;    &lt;div style="clear:both; FONT-FAMILY:Times New Roman;FONT-SIZE: 10pt;TEXT-ALIGN: justify; MARGIN: 0pt 0px 0pt 13.5pt; FONT: 10pt Times New Roman, Times, Serif"&gt;  &lt;/div&gt;    &lt;div style="clear:both; FONT-FAMILY:Times New Roman;FONT-SIZE: 10pt;TEXT-ALIGN: justify; MARGIN: 0pt 0px 0pt 13.5pt; FONT: 10pt Times New Roman, Times, Serif"&gt;  &amp;#160;&lt;/div&gt;    &lt;div style="clear:both; FONT-FAMILY:Times New Roman;FONT-SIZE: 10pt;TEXT-ALIGN: justify; MARGIN: 0pt 0px 0pt 13.5pt; FONT: 10pt Times New Roman, Times, Serif"&gt;  &lt;em&gt;Other Advances&lt;/em&gt;&lt;/div&gt;    &lt;div style="clear:both; FONT-FAMILY:Times New Roman;FONT-SIZE: 10pt"&gt;&lt;font  size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/div&gt;    &lt;div style="clear:both; FONT-FAMILY:Times New Roman;FONT-SIZE: 10pt;TEXT-ALIGN: justify; MARGIN: 0pt 0px 0pt 13.5pt; FONT: 10pt Times New Roman, Times, Serif"&gt;  In addition to the Central Promissory Note, there have been other  intercompany net advances made from time to time from the  Partnership and/or RVOP to Regional, including the $1.0 million  advanced by the Partnership to Regional in connection with the  third amendment to the RZB Loan Agreement and allocations of  corporate expenses, offset by actual cash payments made by Regional  to the Partnership and/or RVOP. These intercompany amounts were  historically evidenced by book entries. Effective March 1, 2012,  Regional and the Partnership entered into an intercompany demand  promissory note incorporating all advances made as of December 31,  2010 and since that date. The note bears interest at the rate of  &lt;font style=" FONT-SIZE: 10pt"&gt;10&lt;/font&gt;% annually from January 1,  2011. At June 30, 2013, the intercompany balance owed by Regional  to the Partnership and/or RVOP is approximately $&lt;font style=" FONT-SIZE: 10pt"&gt;1,586,000&lt;/font&gt;, which includes interest. This  amount is due to the Partnership and RVOP on demand; however, as is  the case with the Central Promissory Note, payment of these amounts  is also subordinated to payment of the Hopewell Note by  Regional.&lt;/div&gt;    &lt;div style="clear:both; FONT-FAMILY:Times New Roman;FONT-SIZE: 10pt"&gt;&lt;font  size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/div&gt;    &lt;div style="clear:both; FONT-FAMILY:Times New Roman;FONT-SIZE: 10pt;TEXT-ALIGN: justify; MARGIN: 0pt 0px 0pt 13.5pt; FONT: 10pt Times New Roman, Times, Serif"&gt;  &lt;em&gt;Allocated Expenses Charged to Subsidiary&lt;/em&gt;&lt;/div&gt;    &lt;div style="clear:both; FONT-FAMILY:Times New Roman;FONT-SIZE: 10pt"&gt;&lt;font  size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/div&gt;    &lt;div style="clear:both; FONT-FAMILY:Times New Roman;FONT-SIZE: 10pt;TEXT-ALIGN: justify; MARGIN: 0pt 0px 0pt 13.5pt; FONT: 10pt Times New Roman, Times, Serif"&gt;  &lt;/div&gt;    &lt;div style="clear:both; FONT-FAMILY:Times New Roman;FONT-SIZE: 10pt;TEXT-ALIGN: justify; MARGIN: 0pt 0px 0pt 13.5pt; FONT: 10pt Times New Roman, Times, Serif"&gt;  Regional is charged for direct expenses paid by the Partnership on  its behalf, as well as its share of allocable overhead for expenses  incurred by the Partnership which are indirectly attributable for  Regional related activities. For the three months and six months  ended June 30, 2012 and 2013, Regional recorded allocable expenses  of $68,000, $55,000, $187,000 and $113,000, respectively.&lt;/div&gt;    &lt;div style="clear:both; FONT-FAMILY:Times New Roman;FONT-SIZE: 10pt"&gt;&lt;font  size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/div&gt;    &lt;div style="clear:both; FONT-FAMILY:Times New Roman;FONT-SIZE: 10pt;TEXT-ALIGN: justify; MARGIN: 0pt 0px 0pt 13.5pt; FONT: 10pt Times New Roman, Times, Serif"&gt;  &lt;strong&gt;Reimbursement Agreements&lt;/strong&gt;&lt;/div&gt;    &lt;div style="clear:both; FONT-FAMILY:Times New Roman;FONT-SIZE: 10pt"&gt;&lt;font  size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/div&gt;    &lt;div style="clear:both; FONT-FAMILY:Times New Roman;FONT-SIZE: 10pt;TEXT-ALIGN: justify; MARGIN: 0pt 0px 0pt 13.5pt; FONT: 10pt Times New Roman, Times, Serif"&gt;  Effective November 17, 2010, the Partnership moved its principal  executive offices to Dallas, Texas. As a result, it has entered  into a Reimbursement Agreement with AirNow Compression Systems,  LTD, an affiliate of Imad K. Anbouba, the General Partner&amp;#8217;s  Chief Executive Officer and President. The agreement provides for  the monthly payment of allocable &amp;#8220;overhead costs,&amp;#8221;  which include rent, utilities, telephones, office equipment and  furnishings attributable to the space utilized by employees of the  General Partner. The term of the agreement is month-to-month and  can be terminated by either party on 30 day&amp;#8217;s advance written  notice. Effective January 1, 2011, the Partnership entered into an  identical agreement with Rover Technologies LLC, a limited  liability company affiliated with Ian Bothwell, the General  Partner&amp;#8217;s Executive Vice President, Chief Financial Officer  and Secretary, located in Manhattan Beach, California. Mr. Bothwell  is a resident of California and lives in Manhattan Beach. Since  June 2012, Regional has been directly charged for its allocated  portion of Rover Technologies LLC&amp;#8217;s expenses.&lt;/div&gt;    &lt;div style="clear:both; FONT-FAMILY:Times New Roman;FONT-SIZE: 10pt"&gt;&lt;font  size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/div&gt;    &lt;div style="clear:both; FONT-FAMILY:Times New Roman;FONT-SIZE: 10pt;TEXT-ALIGN: justify; MARGIN: 0pt 0px 0pt 13.5pt; FONT: 10pt Times New Roman, Times, Serif"&gt;  The Partnership has not reimbursed Rover Technologies LLC since  September 2011 for its share of the overhead costs. Management  intends to satisfy the outstanding expense reimbursements upon  completion of a recapitalization. For the three months and six  months ended June 30, 2012 and 2013, expenses billed in connection  with both of these agreements were $24,000, $12,000, $51,000 and  $30,000, respectively.&lt;/div&gt;  &lt;/div&gt;        </NonNumbericText><FootnoteIndexer /><CurrencyCode /><CurrencySymbol /><IsIndependantCurrency>false</IsIndependantCurrency><ShowCurrencySymbol>false</ShowCurrencySymbol><DisplayDateInUSFormat>false</DisplayDateInUSFormat></Cell></Cells><ElementDataType>nonnum:textBlockItemType</ElementDataType><SimpleDataType>na</SimpleDataType><ElementDefenition>The entire disclosure for related party transactions. Examples of related party transactions include transactions between (a) a parent company and its subsidiary; (b) subsidiaries of a common parent; (c) and entity and its principal owners; and (d) affiliates.</ElementDefenition><ElementReferences>Reference 1: http://www.xbrl.org/2003/role/presentationRef

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