<?xml version="1.0" encoding="us-ascii"?><InstanceReport xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"><Version>2.4.0.8</Version><ReportLongName>00000014 - Disclosure - 9. Capital Lease Obligations Payable</ReportLongName><DisplayLabelColumn>true</DisplayLabelColumn><ShowElementNames>false</ShowElementNames><RoundingOption /><HasEmbeddedReports>false</HasEmbeddedReports><Columns><Column FlagID="0"><Id>1</Id><IsAbstractGroupTitle>false</IsAbstractGroupTitle><LabelSeparator>

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</LabelSeparator><Level>1</Level><ElementName>us-gaap_LeasesCapitalAbstract</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>Leases, Capital [Abstract]</Label></Row><Row FlagID="0"><Id>2</Id><IsAbstractGroupTitle>false</IsAbstractGroupTitle><LabelSeparator>

</LabelSeparator><Level>2</Level><ElementName>us-gaap_CapitalLeasesInFinancialStatementsOfLesseeDisclosureTextBlock</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="from-2013-01-01-to-2013-06-30.12129.0.0.0.0.0.0.0" UnitID=""><Id>1</Id><IsNumeric>false</IsNumeric><IsRatio>false</IsRatio><DisplayZeroAsNone>false</DisplayZeroAsNone><NumericAmount>0</NumericAmount><RoundedNumericAmount>0</RoundedNumericAmount><NonNumbericText>&lt;p style="font: 8pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&lt;b&gt;Note 9 &amp;#150; Capital Lease Obligations
Payable&lt;/b&gt;&lt;/p&gt;

&lt;p style="font: 8pt Times New Roman, Times, Serif; margin: 0; text-align: justify; text-indent: 0.5in"&gt;&amp;#160;&lt;/p&gt;

&lt;p style="font: 8pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;The Company leases certain equipment under agreements
that are classified as capital leases as follows:&lt;/p&gt;

&lt;p style="font: 8pt Times New Roman, Times, Serif; margin: 0; text-align: justify; text-indent: 0.5in"&gt;&amp;#160;&lt;/p&gt;

&lt;p style="font: 8pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;Lease #1 - Commenced on March 12, 2010 with
monthly lease payments of $2,455 and two months paid in advance, and the remaining payments paid over the following 43 months.&lt;/p&gt;

&lt;p style="font: 8pt Times New Roman, Times, Serif; margin: 0; text-align: justify; text-indent: 0.5in"&gt;&amp;#160;&lt;/p&gt;

&lt;p style="font: 8pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;Lease #2 - Commenced on March 16, 2010 with
monthly lease payments of $2,258 over the following 36 months. The lease was terminated on April 16, 2013 and the equipment was
purchased pursuant to the mutual release and final payment of $5,500.&lt;/p&gt;

&lt;p style="font: 8pt Times New Roman, Times, Serif; margin: 0; text-align: justify; text-indent: 0.5in"&gt;&amp;#160;&lt;/p&gt;

&lt;p style="font: 8pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;Lease #3 - Commenced on January 12, 2012 with
monthly lease payments of $480 over the next 48 months, and a bargain purchase price of $1 at the end of the lease.&lt;/p&gt;

&lt;p style="font: 8pt Times New Roman, Times, Serif; margin: 0; text-align: justify; text-indent: 0.5in"&gt;&amp;#160;&amp;#160;&lt;/p&gt;

&lt;p style="font: 8pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;The cost of equipment under capital leases is
included in the Balance Sheets as property and equipment and was $134,800 and $134,800 at June 30, 2013 and December 31, 2012,
respectively. Accumulated amortization of the leased equipment at June 30, 2013 and December 31, 2012 was $120,691 and $108,090,
respectively. Amortization of assets under capital leases is included in depreciation and amortization expense.&lt;/p&gt;

&lt;p style="font: 8pt Times New Roman, Times, Serif; margin: 0; text-align: justify; text-indent: 0.5in"&gt;&amp;#160;&lt;/p&gt;

&lt;p style="font: 8pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;The future minimum lease payments required under
the capital leases and the present value of the net minimum lease payments as of June 30, 2013, are as follows:&lt;/p&gt;

&lt;p style="font: 8pt Times New Roman, Times, Serif; margin: 0; text-align: justify; text-indent: 0.5in"&gt;&amp;#160;&lt;/p&gt;

&lt;table cellspacing="0" cellpadding="0" style="font: 8pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse"&gt;
&lt;tr style="vertical-align: bottom"&gt;
    &lt;td style="text-align: center"&gt;&lt;font style="font-size: 8pt"&gt;Twelve Months&lt;/font&gt;&lt;/td&gt;
    &lt;td&gt;&amp;#160;&lt;/td&gt;
    &lt;td colspan="2" style="text-align: center"&gt;&amp;#160;&lt;/td&gt;
    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="vertical-align: bottom"&gt;
    &lt;td style="text-align: center"&gt;&lt;font style="font-size: 8pt"&gt;Ending&lt;/font&gt;&lt;/td&gt;
    &lt;td&gt;&amp;#160;&lt;/td&gt;
    &lt;td colspan="2" style="text-align: center"&gt;&amp;#160;&lt;/td&gt;
    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="vertical-align: bottom"&gt;
    &lt;td style="border-bottom: black 1pt solid; text-align: center"&gt;&lt;font style="font-size: 8pt"&gt;June 30,&lt;/font&gt;&lt;/td&gt;
    &lt;td style="padding-bottom: 1pt"&gt;&amp;#160;&lt;/td&gt;
    &lt;td colspan="2" style="border-bottom: black 1pt solid; text-align: center"&gt;&lt;font style="font-size: 8pt"&gt;Amount&lt;/font&gt;&lt;/td&gt;
    &lt;td style="padding-bottom: 1pt"&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="vertical-align: bottom; background-color: #CCFFCC"&gt;
    &lt;td style="width: 15%; text-align: center"&gt;&lt;font style="font-size: 8pt"&gt;2014&lt;/font&gt;&lt;/td&gt;
    &lt;td style="width: 73%"&gt;&amp;#160;&lt;/td&gt;
    &lt;td style="width: 1%"&gt;&lt;font style="font-size: 8pt"&gt;$&lt;/font&gt;&lt;/td&gt;
    &lt;td style="width: 10%; text-align: right"&gt;&lt;font style="font-size: 8pt"&gt;28,183&lt;/font&gt;&lt;/td&gt;
    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="vertical-align: bottom; background-color: white"&gt;
    &lt;td style="text-align: center"&gt;&lt;font style="font-size: 8pt"&gt;2015&lt;/font&gt;&lt;/td&gt;
    &lt;td&gt;&amp;#160;&lt;/td&gt;
    &lt;td&gt;&amp;#160;&lt;/td&gt;
    &lt;td style="text-align: right"&gt;&lt;font style="font-size: 8pt"&gt;5,757&lt;/font&gt;&lt;/td&gt;
    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="vertical-align: bottom; background-color: #CCFFCC"&gt;
    &lt;td style="padding-bottom: 1pt; text-align: center"&gt;&lt;font style="font-size: 8pt"&gt;2016&lt;/font&gt;&lt;/td&gt;
    &lt;td style="padding-bottom: 1pt"&gt;&amp;#160;&lt;/td&gt;
    &lt;td style="border-bottom: black 1pt solid"&gt;&amp;#160;&lt;/td&gt;
    &lt;td style="border-bottom: black 1pt solid; text-align: right"&gt;&lt;font style="font-size: 8pt"&gt;3,311&lt;/font&gt;&lt;/td&gt;
    &lt;td style="padding-bottom: 1pt"&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="vertical-align: bottom; background-color: white"&gt;
    &lt;td colspan="2"&gt;&lt;font style="font-size: 8pt"&gt;Total minimum payments&lt;/font&gt;&lt;/td&gt;
    &lt;td&gt;&lt;font style="font-size: 8pt"&gt;$&lt;/font&gt;&lt;/td&gt;
    &lt;td style="text-align: right"&gt;&lt;font style="font-size: 8pt"&gt;37,251&lt;/font&gt;&lt;/td&gt;
    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="vertical-align: bottom; background-color: #CCFFCC"&gt;
    &lt;td colspan="2" style="padding-bottom: 1pt; text-indent: 12.6pt"&gt;&lt;font style="font-size: 8pt"&gt;Less: amount representing interest&lt;/font&gt;&lt;/td&gt;
    &lt;td style="border-bottom: black 1pt solid"&gt;&amp;#160;&lt;/td&gt;
    &lt;td style="border-bottom: black 1pt solid; text-align: right"&gt;&lt;font style="font-size: 8pt"&gt;(3,844&lt;/font&gt;&lt;/td&gt;
    &lt;td style="padding-bottom: 1pt"&gt;&lt;font style="font-size: 8pt"&gt;)&lt;/font&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="vertical-align: bottom; background-color: white"&gt;
    &lt;td colspan="2"&gt;&lt;font style="font-size: 8pt"&gt;Present value of net minimum lease payments&lt;/font&gt;&lt;/td&gt;
    &lt;td&gt;&amp;#160;&lt;/td&gt;
    &lt;td style="text-align: right"&gt;&lt;font style="font-size: 8pt"&gt;33,407&lt;/font&gt;&lt;/td&gt;
    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="vertical-align: bottom; background-color: #CCFFCC"&gt;
    &lt;td colspan="2" style="padding-bottom: 1pt; text-indent: 12.6pt"&gt;&lt;font style="font-size: 8pt"&gt;Less: Current maturities of capital lease obligations&lt;/font&gt;&lt;/td&gt;
    &lt;td style="border-bottom: black 1pt solid"&gt;&amp;#160;&lt;/td&gt;
    &lt;td style="border-bottom: black 1pt solid; text-align: right"&gt;&lt;font style="font-size: 8pt"&gt;(25,247&lt;/font&gt;&lt;/td&gt;
    &lt;td style="padding-bottom: 1pt"&gt;&lt;font style="font-size: 8pt"&gt;)&lt;/font&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="vertical-align: bottom; background-color: white"&gt;
    &lt;td colspan="2" style="padding-bottom: 2.5pt"&gt;&lt;font style="font-size: 8pt"&gt;Long-term capital lease obligations&lt;/font&gt;&lt;/td&gt;
    &lt;td style="border-bottom: black 2.25pt double"&gt;&lt;font style="font-size: 8pt"&gt;$&lt;/font&gt;&lt;/td&gt;
    &lt;td style="border-bottom: black 2.25pt double; text-align: right"&gt;&lt;font style="font-size: 8pt"&gt;8,160&lt;/font&gt;&lt;/td&gt;
    &lt;td style="padding-bottom: 2.5pt"&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&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 capital leasing arrangements including, but not limited to, the following: a) the basis on which contingent rental payments are determined; (b) the existence and terms of renewal or purchase options and escalation clauses; (c) restrictions imposed by lease agreements, such as those concerning dividends, additional debt, and further leasing.</ElementDefenition><ElementReferences>Reference 1: http://www.xbrl.org/2003/role/presentationRef

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 -Name Accounting Standards Codification

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 -SubTopic 30

 -Section 50

 -Paragraph 1

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Reference 2: http://www.xbrl.org/2003/role/presentationRef

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 -Name Accounting Standards Codification

 -Topic 840

 -SubTopic 10

 -Section 50

 -Paragraph 2

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