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        <EOY>0</EOY>
      </CapStckTrstPrinCurrentFunds>
      <PaidInCapSrplsLandBldgEqpFund>
        <BOY>0</BOY>
        <EOY>0</EOY>
      </PaidInCapSrplsLandBldgEqpFund>
      <RetainedEarningsEndowmentEtc>
        <BOY>38497893</BOY>
        <EOY>37798196</EOY>
      </RetainedEarningsEndowmentEtc>
      <TotalNetAssetsFundBalances>
        <BOY>38497893</BOY>
        <EOY>37798196</EOY>
      </TotalNetAssetsFundBalances>
      <TotalLiabNetAssetsFundBalances>
        <BOY>68531307</BOY>
        <EOY>65622734</EOY>
      </TotalLiabNetAssetsFundBalances>
      <InfoInScheduleOPartXI>X</InfoInScheduleOPartXI>
      <ReconcilationRevenueExpenses>-1171535</ReconcilationRevenueExpenses>
      <ReconcilationOtherChanges>471838</ReconcilationOtherChanges>
      <InfoInScheduleOPartXII>X</InfoInScheduleOPartXII>
      <MethodOfAccountingAccrual>X</MethodOfAccountingAccrual>
      <AccountantCompileOrReview>0</AccountantCompileOrReview>
      <FSAudited>1</FSAudited>
      <AuditCommittee>1</AuditCommittee>
      <FinancialStatementSeparate>X</FinancialStatementSeparate>
      <FederalGrantAuditRequired>0</FederalGrantAuditRequired>
    </IRS990>
    <IRS990ScheduleD documentId="RetDoc1040000001">
      <TotalOfBookValueLandBuildings>0</TotalOfBookValueLandBuildings>
      <OtherLiabilities>
        <Description>ACCUMULATED ELIGIBILITY CREDITS</Description>
        <Amount>9526508</Amount>
      </OtherLiabilities>
      <OtherLiabilities>
        <Description>LIABILITY FOR INCURRED BUT UNREPORTED CLAIMS</Description>
        <Amount>6927000</Amount>
      </OtherLiabilities>
      <OtherLiabilities>
        <Description>LIABILITY FOR EXTENDED MEDICAL COVERAGE</Description>
        <Amount>9051231</Amount>
      </OtherLiabilities>
      <OtherLiabilities>
        <Description>LIABILITY FOR SEVERANCE BENEFITS</Description>
        <Amount>1667611</Amount>
      </OtherLiabilities>
      <TotalOfAmounts>27172350</TotalOfAmounts>
      <TotalRevenue>56910440</TotalRevenue>
      <TotalExpenses>58081975</TotalExpenses>
      <ExcessOrDeficitForYear>-1171535</ExcessOrDeficitForYear>
      <NetUnrealizedGLOnInvestments>471838</NetUnrealizedGLOnInvestments>
      <TotalAdjustments>471838</TotalAdjustments>
      <ExcessOrDeficitPerFS>-699697</ExcessOrDeficitPerFS>
      <TotRevenueEtcAuditedFinclStmt>57265149</TotRevenueEtcAuditedFinclStmt>
      <NetUnrealizedGainsInvestments>471838</NetUnrealizedGainsInvestments>
      <RevenueNotRptdF990>471838</RevenueNotRptdF990>
      <RevenueSubtotal>56793311</RevenueSubtotal>
      <InvestmentExpensesNotIncluded>117129</InvestmentExpensesNotIncluded>
      <RevenueNotRptdOnFinStmt>117129</RevenueNotRptdOnFinStmt>
      <TotalRevenuePerForm990>56910440</TotalRevenuePerForm990>
      <TotExpensesEtcAuditedFinclStmt>59810742</TotExpensesEtcAuditedFinclStmt>
      <ExpensesNotRptdF990>0</ExpensesNotRptdF990>
      <ExpensesSubtotal>59810742</ExpensesSubtotal>
      <InvestmentExpensesNotIncluded2>117129</InvestmentExpensesNotIncluded2>
      <OtherExpensesNotIncluded>-1845896</OtherExpensesNotIncluded>
      <ExpensesNotRptdOnFinStmt>-1728767</ExpensesNotRptdOnFinStmt>
      <TotalExpensesPerForm990>58081975</TotalExpensesPerForm990>
      <Form990ScheduleDPartXIV>
        <Identifier>DESCRIPTION OF UNCERTAIN TAX POSITIONS UNDER FIN 48:</Identifier>
        <ReturnReference>PART X:</ReturnReference>
        <Explanation>THE PLAN ADMINISTRATOR HAS ANALYZED THE TAX POSITIONS TAKEN BY THE PLAN, AND HAS CONCLUDED THAT AS OF MARCH 31, 2012, THERE ARE NO UNCERTAIN POSITIONS TAKEN OR EXPECTED TO BE TAKEN THAT WOULD REQUIRE RECOGNITION OF A LIABILITY (OR ASSET) OR DISCLOSURE IN THE FINANCIAL STATEMENTS. THE PLAN IS SUBJECT TO ROUTINE AUDITS BY TAXING JURISDICTIONS; HOWEVER, THERE ARE CURRENTLY NO AUDITS FOR ANY TAX PERIODS IN PROGRESS. THE PLAN ADMINISTRATOR BELIEVES IT IS NO LONGER SUBJECT TO INCOME TAX EXAMINATIONS FOR ANY YEARS PRIOR TO 2009.</Explanation>
      </Form990ScheduleDPartXIV>
      <Form990ScheduleDPartXIV>
        <Identifier>PART XIII, LINE 4B - OTHER ADJUSTMENTS:</Identifier>
        <Explanation>CHANGE IN DOLLAR BANK RESERVE -159,011. CHANGE IN IBNR RESERVE -1,373,000. CHANGE IN EXTENDED BENEFIT RESERVE -245,111. CHANGE IN SEVERANCE BENEFITS RESERVE -68,774.</Explanation>
      </Form990ScheduleDPartXIV>
    </IRS990ScheduleD>
    <IRS990ScheduleO documentId="RetDoc1044400001">
      <GeneralExplanation>
        <ReturnReference>FORM 990, PART VI, SECTION A, LINE 3</ReturnReference>
        <Explanation>THE DAY TO DAY OPERATIONS OF THE PLAN ARE MANAGED BY AW REHN &amp; ASSOCIATES</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <ReturnReference>FORM 990, PART VI, SECTION B, LINE 11</ReturnReference>
        <Explanation>THE FORM 990 IS PRESENTED TO THE BOARD OF TRUSTEES AND LEGAL COUNSEL BEFORE SIGNATURE AND FILING</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <ReturnReference>FORM 990, PART VI, SECTION B, LINE 12C</ReturnReference>
        <Explanation>TRUSTEES ARE ASKED ANNUALLY IN WRITING IF ANY CONFLICTS EXIST. ANY CONFLICTS ARE BROUGHT TO THE BOARD OF TRUSTEES FOR RESOLUTION.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <ReturnReference>FORM 990, PART VI, SECTION C, LINE 19</ReturnReference>
        <Explanation>THE ORGANIZATION'S GOVERNING DOCUMENTS AND FINANCIAL STATEMENTS ARE NOT AVAILABLE TO THE PUBLIC. A SUMMARY ANNUAL REPORT REQUIRED BY ERISA IS SENT TO THE PARTICIPANTS ANNUALLY. ACCORDING TO THE REGULATIONS OF THE EBSA, PARTICIPANTS CAN REQUEST THE FULL ANNUAL REPORT AND FORM 5500 FROM THE PLAN ADMINISTRATOR.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <Identifier>CHANGES IN NET ASSETS OR FUND BALANCES:</Identifier>
        <ReturnReference>FORM 990, PART XI, LINE 5:</ReturnReference>
        <Explanation>NET UNREALIZED GAINS ON INVESTMENTS: 471,838.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <ReturnReference>FORM 990, PART X, LINE 2C:</ReturnReference>
        <Explanation>THE PROCESS HAS NOT CHANGED FROM THE PRIOR YEAR.</Explanation>
      </GeneralExplanation>
    </IRS990ScheduleO>
    <IRS990ScheduleR documentId="RetDoc1043400001">
      <Form990ScheduleRPartI>
        <NameOfDisregardedEntity>
          <BusinessNameLine1>GLACKEN FABRICATION</BusinessNameLine1>
        </NameOfDisregardedEntity>
        <AddressUS>
          <AddressLine1>6303 212TH ST SW STE A</AddressLine1>
          <City>LYNNWOOD</City>
          <State>WA</State>
          <ZIPCode>98036</ZIPCode>
        </AddressUS>
        <EIN>263926756</EIN>
        <PrimaryActivities>CONTRACTOR</PrimaryActivities>
        <LegalDomicileState>WA</LegalDomicileState>
      </Form990ScheduleRPartI>
      <Form990ScheduleRPartII>
        <NameOfDisregardedEntity>
          <BusinessNameLine1>MONTANA STATE SHEET METAL JATC</BusinessNameLine1>
        </NameOfDisregardedEntity>
        <AddressUS>
          <AddressLine1>PO BOX 3006</AddressLine1>
          <City>BUTTE</City>
          <State>MT</State>
          <ZIPCode>59702</ZIPCode>
        </AddressUS>
        <EIN>910413915</EIN>
        <PrimaryActivities>TRAINING</PrimaryActivities>
        <LegalDomicileState>MT</LegalDomicileState>
        <ControlledOrg>0</ControlledOrg>
      </Form990ScheduleRPartII>
      <Form990ScheduleRPartII>
        <NameOfDisregardedEntity>
          <BusinessNameLine1>NE WAN IDAHO JATC</BusinessNameLine1>
        </NameOfDisregardedEntity>
        <AddressUS>
          <AddressLine1>7209 E TRENT AVE</AddressLine1>
          <City>SPOKANE</City>
          <State>WA</State>
          <ZIPCode>99212</ZIPCode>
        </AddressUS>
        <EIN>910980415</EIN>
        <PrimaryActivities>TRAINING</PrimaryActivities>
        <LegalDomicileState>WA</LegalDomicileState>
        <ControlledOrg>0</ControlledOrg>
      </Form990ScheduleRPartII>
      <Form990ScheduleRPartII>
        <NameOfDisregardedEntity>
          <BusinessNameLine1>NWSMW ORGANIZATIONAL TRUST</BusinessNameLine1>
        </NameOfDisregardedEntity>
        <AddressUS>
          <AddressLine1>14090 FRYELANDS BLVD SE</AddressLine1>
          <City>MONROE</City>
          <State>WA</State>
          <ZIPCode>98272</ZIPCode>
        </AddressUS>
        <EIN>916311527</EIN>
        <PrimaryActivities>UNION</PrimaryActivities>
        <LegalDomicileState>WA</LegalDomicileState>
        <ControlledOrg>0</ControlledOrg>
      </Form990ScheduleRPartII>
      <Form990ScheduleRPartII>
        <NameOfDisregardedEntity>
          <BusinessNameLine1>PORT OF SEATTLE</BusinessNameLine1>
        </NameOfDisregardedEntity>
        <AddressUS>
          <AddressLine1>ATTN CUTIE BURNS</AddressLine1>
          <City>SEATTLE</City>
          <State>WA</State>
          <ZIPCode>98199</ZIPCode>
        </AddressUS>
        <EIN>916001025</EIN>
        <PrimaryActivities>GOV'T</PrimaryActivities>
        <LegalDomicileState>WA</LegalDomicileState>
        <ControlledOrg>0</ControlledOrg>
      </Form990ScheduleRPartII>
      <Form990ScheduleRPartII>
        <NameOfDisregardedEntity>
          <BusinessNameLine1>SE WASHINGTON &amp; NE OREGON JATC</BusinessNameLine1>
        </NameOfDisregardedEntity>
        <AddressUS>
          <AddressLine1>1718 W SYLVESTER ST</AddressLine1>
          <City>PASCO</City>
          <State>WA</State>
          <ZIPCode>99301</ZIPCode>
        </AddressUS>
        <EIN>911003838</EIN>
        <PrimaryActivities>TRAINING</PrimaryActivities>
        <LegalDomicileState>WA</LegalDomicileState>
        <ControlledOrg>0</ControlledOrg>
      </Form990ScheduleRPartII>
      <Form990ScheduleRPartII>
        <NameOfDisregardedEntity>
          <BusinessNameLine1>SHEET METAL WORKERS LOCAL 103</BusinessNameLine1>
        </NameOfDisregardedEntity>
        <AddressUS>
          <AddressLine1>5250 N MONTANA AVE</AddressLine1>
          <City>HELENA</City>
          <State>MT</State>
          <ZIPCode>59602</ZIPCode>
        </AddressUS>
        <EIN>810378730</EIN>
        <PrimaryActivities>UNION</PrimaryActivities>
        <LegalDomicileState>MT</LegalDomicileState>
        <ControlledOrg>0</ControlledOrg>
      </Form990ScheduleRPartII>
      <Form990ScheduleRPartII>
        <NameOfDisregardedEntity>
          <BusinessNameLine1>SHEET METAL WORKERS LOCAL 23 JATC</BusinessNameLine1>
        </NameOfDisregardedEntity>
        <AddressUS>
          <AddressLine1>1317 E 75TH AVE</AddressLine1>
          <City>ANCHORAGE</City>
          <State>AK</State>
          <ZIPCode>99518</ZIPCode>
        </AddressUS>
        <EIN>920041203</EIN>
        <PrimaryActivities>TRAINING</PrimaryActivities>
        <LegalDomicileState>AK</LegalDomicileState>
        <ControlledOrg>0</ControlledOrg>
      </Form990ScheduleRPartII>
      <Form990ScheduleRPartII>
        <NameOfDisregardedEntity>
          <BusinessNameLine1>SHEET METAL WORKERS LOCAL 23</BusinessNameLine1>
        </NameOfDisregardedEntity>
        <AddressUS>
          <AddressLine1>1317 E 75TH AVE</AddressLine1>
          <City>ANCHORAGE</City>
          <State>AK</State>
          <ZIPCode>99518</ZIPCode>
        </AddressUS>
        <EIN>920021769</EIN>
        <PrimaryActivities>UNION</PrimaryActivities>
        <LegalDomicileState>AK</LegalDomicileState>
        <ControlledOrg>0</ControlledOrg>
      </Form990ScheduleRPartII>
      <Form990ScheduleRPartII>
        <NameOfDisregardedEntity>
          <BusinessNameLine1>SHEET METAL WORKERS LOCAL 55</BusinessNameLine1>
        </NameOfDisregardedEntity>
        <AddressUS>
          <AddressLine1>1718 W SYLVESTER ST</AddressLine1>
          <City>PASCO</City>
          <State>WA</State>
          <ZIPCode>99301</ZIPCode>
        </AddressUS>
        <EIN>264414678</EIN>
        <PrimaryActivities>UNION</PrimaryActivities>
        <LegalDomicileState>WA</LegalDomicileState>
        <ControlledOrg>0</ControlledOrg>
      </Form990ScheduleRPartII>
      <Form990ScheduleRPartII>
        <NameOfDisregardedEntity>
          <BusinessNameLine1>SHEET METAL WORKERS LOCAL 66</BusinessNameLine1>
        </NameOfDisregardedEntity>
        <AddressUS>
          <AddressLine1>11831 BEVERLY PARK ROAD</AddressLine1>
          <City>EVERETT</City>
          <State>WA</State>
          <ZIPCode>98204</ZIPCode>
        </AddressUS>
        <EIN>911395087</EIN>
        <PrimaryActivities>UNION</PrimaryActivities>
        <LegalDomicileState>WA</LegalDomicileState>
        <ControlledOrg>0</ControlledOrg>
      </Form990ScheduleRPartII>
      <Form990ScheduleRPartII>
        <NameOfDisregardedEntity>
          <BusinessNameLine1>SMACNA EASTERN WA</BusinessNameLine1>
        </NameOfDisregardedEntity>
        <AddressUS>
          <AddressLine1>3810 E BOONE AVE</AddressLine1>
          <City>SPOKANE</City>
          <State>WA</State>
          <ZIPCode>99202</ZIPCode>
        </AddressUS>
        <EIN>911016979</EIN>
        <PrimaryActivities>TRADE ASSOCIATION</PrimaryActivities>
        <LegalDomicileState>WA</LegalDomicileState>
        <ControlledOrg>0</ControlledOrg>
      </Form990ScheduleRPartII>
      <Form990ScheduleRPartII>
        <NameOfDisregardedEntity>
          <BusinessNameLine1>SW CENTRAL IDAHO JATC</BusinessNameLine1>
        </NameOfDisregardedEntity>
        <AddressUS>
          <AddressLine1>5682 ALBATROS ST</AddressLine1>
          <City>BOISE</City>
          <State>ID</State>
          <ZIPCode>83705</ZIPCode>
        </AddressUS>
        <EIN>841420311</EIN>
        <PrimaryActivities>TRAINING</PrimaryActivities>
        <LegalDomicileState>ID</LegalDomicileState>
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      </Form990ScheduleRPartII>
      <Form990ScheduleRPartII>
        <NameOfDisregardedEntity>
          <BusinessNameLine1>TACOMA SCHOOL DISTRICT</BusinessNameLine1>
        </NameOfDisregardedEntity>
        <AddressUS>
          <AddressLine1>PO BOX 1357</AddressLine1>
          <City>TACOMA</City>
          <State>WA</State>
          <ZIPCode>98401</ZIPCode>
        </AddressUS>
        <EIN>916001553</EIN>
        <PrimaryActivities>GOV'T</PrimaryActivities>
        <LegalDomicileState>WA</LegalDomicileState>
        <ControlledOrg>0</ControlledOrg>
      </Form990ScheduleRPartII>
      <Form990ScheduleRPartII>
        <NameOfDisregardedEntity>
          <BusinessNameLine1>WESTERN WASHINGTON SHEET METAL JATC</BusinessNameLine1>
        </NameOfDisregardedEntity>
        <AddressUS>
          <AddressLine1>11831 BEVERLY PARK RD B-1</AddressLine1>
          <City>EVERETT</City>
          <State>WA</State>
          <ZIPCode>98204</ZIPCode>
        </AddressUS>
        <EIN>911086070</EIN>
        <PrimaryActivities>TRAINING</PrimaryActivities>
        <LegalDomicileState>WA</LegalDomicileState>
        <ControlledOrg>0</ControlledOrg>
      </Form990ScheduleRPartII>
      <Form990ScheduleRPartIII>
        <NameOfRelatedOrg>
          <BusinessNameLine1>ALLIANT SYSTEMS</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>1600 NW 167TH PL</AddressLine1>
          <City>BEAVERTON</City>
          <State>OR</State>
          <ZIPCode>97006</ZIPCode>
        </AddressUS>
        <EIN>460506661</EIN>
        <PrimaryActivity>CONTRACTOR</PrimaryActivity>
        <LegalDomicileState>OR</LegalDomicileState>
        <DisproportionateAllocations>0</DisproportionateAllocations>
        <GeneralOrManagingPartner>0</GeneralOrManagingPartner>
      </Form990ScheduleRPartIII>
      <Form990ScheduleRPartIII>
        <NameOfRelatedOrg>
          <BusinessNameLine1>CRL SERVICES LLC</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>PO BOX 230788</AddressLine1>
          <City>ANCHORAGE</City>
          <State>AK</State>
          <ZIPCode>99523</ZIPCode>
        </AddressUS>
        <EIN>920156487</EIN>
        <PrimaryActivity>CONTRACTOR</PrimaryActivity>
        <LegalDomicileState>AK</LegalDomicileState>
        <DisproportionateAllocations>0</DisproportionateAllocations>
        <GeneralOrManagingPartner>0</GeneralOrManagingPartner>
      </Form990ScheduleRPartIII>
      <Form990ScheduleRPartIII>
        <NameOfRelatedOrg>
          <BusinessNameLine1>HERMANSON CORPORATION</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>1221 2ND AVE N</AddressLine1>
          <City>KENT</City>
          <State>WA</State>
          <ZIPCode>98032</ZIPCode>
        </AddressUS>
        <EIN>910201449</EIN>
        <PrimaryActivity>CONTRACTOR</PrimaryActivity>
        <LegalDomicileState>WA</LegalDomicileState>
        <DisproportionateAllocations>0</DisproportionateAllocations>
        <GeneralOrManagingPartner>0</GeneralOrManagingPartner>
      </Form990ScheduleRPartIII>
      <Form990ScheduleRPartIII>
        <NameOfRelatedOrg>
          <BusinessNameLine1>MOUNTAIN COPPER CREATIONS LLP</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>4085 OLD MARSHALL GRADE RD</AddressLine1>
          <City>MISSOULA</City>
          <State>MT</State>
          <ZIPCode>59802</ZIPCode>
        </AddressUS>
        <EIN>203155019</EIN>
        <PrimaryActivity>MANUFACTURING</PrimaryActivity>
        <LegalDomicileState>MT</LegalDomicileState>
        <DisproportionateAllocations>0</DisproportionateAllocations>
        <GeneralOrManagingPartner>0</GeneralOrManagingPartner>
      </Form990ScheduleRPartIII>
      <Form990ScheduleRPartIII>
        <NameOfRelatedOrg>
          <BusinessNameLine1>STRAUB HEATING &amp; COOLING LLC</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>PO BOX 1044</AddressLine1>
          <City>BAKER</City>
          <State>MT</State>
          <ZIPCode>59313</ZIPCode>
        </AddressUS>
        <EIN>452488798</EIN>
        <PrimaryActivity>RES. HEAT &amp; COOL</PrimaryActivity>
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        </NameOfRelatedOrg>
        <AddressUS>
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          <City>NEW BRIGHTON</City>
          <State>MN</State>
          <ZIPCode>55112</ZIPCode>
        </AddressUS>
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        <NameOfRelatedOrg>
          <BusinessNameLine1>ACCURATE HTG &amp; CLG INC</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>3362 STONEY RIDGE RD</AddressLine1>
          <City>BILLINGS</City>
          <State>MT</State>
          <ZIPCode>59106</ZIPCode>
        </AddressUS>
        <EIN>470863399</EIN>
        <PrimaryActivity>HVAC</PrimaryActivity>
        <LegalDomicileState>MT</LegalDomicileState>
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      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>AIR CONTROLS BOZEMAN INC</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>7510 SHEDHORN</AddressLine1>
          <City>BOZEMAN</City>
          <State>MT</State>
          <ZIPCode>59718</ZIPCode>
        </AddressUS>
        <EIN>431976674</EIN>
        <PrimaryActivity>HVAC</PrimaryActivity>
        <LegalDomicileState>MT</LegalDomicileState>
        <TypeOfEntity>S</TypeOfEntity>
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      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>AIR HANDLERS INC</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>PO BOX 4036</AddressLine1>
          <City>TUMWATER</City>
          <State>WA</State>
          <ZIPCode>98501</ZIPCode>
        </AddressUS>
        <EIN>910832831</EIN>
        <PrimaryActivity>CONTRACTOR</PrimaryActivity>
        <LegalDomicileState>WA</LegalDomicileState>
        <TypeOfEntity>S</TypeOfEntity>
      </Form990ScheduleRPartIV>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>AIRTEST COMPANY</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>PO BOX 86</AddressLine1>
          <City>ISSAQUAH</City>
          <State>WA</State>
          <ZIPCode>98027</ZIPCode>
        </AddressUS>
        <EIN>911707313</EIN>
        <PrimaryActivity>HVAC</PrimaryActivity>
        <LegalDomicileState>WA</LegalDomicileState>
        <TypeOfEntity>S</TypeOfEntity>
      </Form990ScheduleRPartIV>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>AIRFLOW MECHANICAL INC</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>PO BOX 6056</AddressLine1>
          <City>LYNNWOOD</City>
          <State>WA</State>
          <ZIPCode>98036</ZIPCode>
        </AddressUS>
        <EIN>911722211</EIN>
        <PrimaryActivity>HVAC</PrimaryActivity>
        <LegalDomicileState>WA</LegalDomicileState>
        <TypeOfEntity>S</TypeOfEntity>
      </Form990ScheduleRPartIV>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>ALASKA INTEGRATED SERVICES</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>10421 VFW ROAD</AddressLine1>
          <City>EAGLE RIVER</City>
          <State>AK</State>
          <ZIPCode>99577</ZIPCode>
        </AddressUS>
        <EIN>920176041</EIN>
        <PrimaryActivity>CONTRACTOR</PrimaryActivity>
        <LegalDomicileState>AK</LegalDomicileState>
        <TypeOfEntity>S</TypeOfEntity>
      </Form990ScheduleRPartIV>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>ALASKA SHEET METAL</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>568 WHITNEY RD</AddressLine1>
          <City>ANCHORAGE</City>
          <State>AK</State>
          <ZIPCode>99501</ZIPCode>
        </AddressUS>
        <EIN>920031270</EIN>
        <PrimaryActivity>CONTRACTOR</PrimaryActivity>
        <LegalDomicileState>AK</LegalDomicileState>
        <TypeOfEntity>S</TypeOfEntity>
      </Form990ScheduleRPartIV>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>AMERICAN ELECTRIC INC</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>1999 BUTLER LOOP</AddressLine1>
          <City>RICHLAND</City>
          <State>WA</State>
          <ZIPCode>99354</ZIPCode>
        </AddressUS>
        <EIN>911684611</EIN>
        <PrimaryActivity>CONTRACTOR</PrimaryActivity>
        <LegalDomicileState>WA</LegalDomicileState>
        <TypeOfEntity>S</TypeOfEntity>
      </Form990ScheduleRPartIV>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>AMERICOOL HEATING &amp; AC</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>17929 IRWIN ST NW</AddressLine1>
          <City>ROCHESTER</City>
          <State>WA</State>
          <ZIPCode>98579</ZIPCode>
        </AddressUS>
        <EIN>203623595</EIN>
        <PrimaryActivity>HVAC</PrimaryActivity>
        <LegalDomicileState>WA</LegalDomicileState>
        <TypeOfEntity>S</TypeOfEntity>
      </Form990ScheduleRPartIV>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>ANACONDA TIN SHOP</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>109 ELM ST</AddressLine1>
          <City>ANACONDA</City>
          <State>MT</State>
          <ZIPCode>59711</ZIPCode>
        </AddressUS>
        <EIN>810518388</EIN>
        <PrimaryActivity>HVAC</PrimaryActivity>
        <LegalDomicileState>MT</LegalDomicileState>
        <TypeOfEntity>S</TypeOfEntity>
      </Form990ScheduleRPartIV>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>APOLLO SHEET METAL INC</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>1207 W COLUMBIA DR</AddressLine1>
          <City>KENNEWICK</City>
          <State>WA</State>
          <ZIPCode>99336</ZIPCode>
        </AddressUS>
        <EIN>911178943</EIN>
        <PrimaryActivity>HVAC</PrimaryActivity>
        <LegalDomicileState>WA</LegalDomicileState>
        <TypeOfEntity>S</TypeOfEntity>
      </Form990ScheduleRPartIV>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>ARCHITECTURAL METAL WORKS</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>PO BOX 3524</AddressLine1>
          <City>WILSONVILLE</City>
          <State>OR</State>
          <ZIPCode>97070</ZIPCode>
        </AddressUS>
        <EIN>931055044</EIN>
        <PrimaryActivity>FABRICATION</PrimaryActivity>
        <LegalDomicileState>OR</LegalDomicileState>
        <TypeOfEntity>S</TypeOfEntity>
      </Form990ScheduleRPartIV>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>ARGO BLOWER MFG &amp; CO INC</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>5400 E MARGINAL WAY S</AddressLine1>
          <City>SEATTLE</City>
          <State>WA</State>
          <ZIPCode>98134</ZIPCode>
        </AddressUS>
        <EIN>910129010</EIN>
        <PrimaryActivity>FABRICATION</PrimaryActivity>
        <LegalDomicileState>WA</LegalDomicileState>
        <TypeOfEntity>S</TypeOfEntity>
      </Form990ScheduleRPartIV>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>B &amp; B HEATING &amp; AC</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>415 VAUGHN RD</AddressLine1>
          <City>GREAT FALLS</City>
          <State>MT</State>
          <ZIPCode>59404</ZIPCode>
        </AddressUS>
        <EIN>810366094</EIN>
        <PrimaryActivity>HVAC</PrimaryActivity>
        <LegalDomicileState>MT</LegalDomicileState>
        <TypeOfEntity>S</TypeOfEntity>
      </Form990ScheduleRPartIV>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>BAETE-FORSETH HVAC LLC</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>PO BOX 84008</AddressLine1>
          <City>SIOUX FALLS</City>
          <State>SD</State>
          <ZIPCode>57118</ZIPCode>
        </AddressUS>
        <EIN>010659677</EIN>
        <PrimaryActivity>HVAC</PrimaryActivity>
        <LegalDomicileState>SD</LegalDomicileState>
        <TypeOfEntity>C</TypeOfEntity>
      </Form990ScheduleRPartIV>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>BEHRENDS MECHANICAL INC</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>1782 ANKA STREET</AddressLine1>
          <City>JUNEAU</City>
          <State>AK</State>
          <ZIPCode>99802</ZIPCode>
        </AddressUS>
        <EIN>920157629</EIN>
        <PrimaryActivity>CONTRACTOR</PrimaryActivity>
        <LegalDomicileState>AK</LegalDomicileState>
        <TypeOfEntity>S</TypeOfEntity>
      </Form990ScheduleRPartIV>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>BELLEVUE MECHANICAL INC</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>1331 120TH AVE NE</AddressLine1>
          <City>BELLINGHAM</City>
          <State>WA</State>
          <ZIPCode>98005</ZIPCode>
        </AddressUS>
        <EIN>061646885</EIN>
        <PrimaryActivity>HVAC</PrimaryActivity>
        <LegalDomicileState>WA</LegalDomicileState>
        <TypeOfEntity>S</TypeOfEntity>
      </Form990ScheduleRPartIV>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>BECHTEL NATIONAL INC</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>BLDG T1 MS10-A</AddressLine1>
          <City>RICHLAND</City>
          <State>WA</State>
          <ZIPCode>99354</ZIPCode>
        </AddressUS>
        <EIN>942452542</EIN>
        <PrimaryActivity>CONTRACTOR</PrimaryActivity>
        <LegalDomicileState>WA</LegalDomicileState>
        <TypeOfEntity>S</TypeOfEntity>
      </Form990ScheduleRPartIV>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>BILLINGS HEATING &amp; COOLING</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>PO BOX 30275</AddressLine1>
          <City>BILLINGS</City>
          <State>MT</State>
          <ZIPCode>59107</ZIPCode>
        </AddressUS>
        <EIN>810463145</EIN>
        <PrimaryActivity>FABRICATION</PrimaryActivity>
        <LegalDomicileState>MT</LegalDomicileState>
        <TypeOfEntity>S</TypeOfEntity>
      </Form990ScheduleRPartIV>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>BLUE MOUNTAIN MECHANICAL INC</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>PO BOX 220</AddressLine1>
          <City>E OLYMPIA</City>
          <State>WA</State>
          <ZIPCode>98540</ZIPCode>
        </AddressUS>
        <EIN>912076225</EIN>
        <PrimaryActivity>CONTRACTOR</PrimaryActivity>
        <LegalDomicileState>WA</LegalDomicileState>
        <TypeOfEntity>S</TypeOfEntity>
      </Form990ScheduleRPartIV>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>BUTTE TIN SHOP INC</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>34 E GALENA ST</AddressLine1>
          <City>BUTTE</City>
          <State>MT</State>
          <ZIPCode>59701</ZIPCode>
        </AddressUS>
        <EIN>810284521</EIN>
        <PrimaryActivity>HVAC</PrimaryActivity>
        <LegalDomicileState>MT</LegalDomicileState>
        <TypeOfEntity>S</TypeOfEntity>
      </Form990ScheduleRPartIV>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>CAPITAL INDUSTRIES</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>5801 3RD AVE S</AddressLine1>
          <City>SEATTLE</City>
          <State>WA</State>
          <ZIPCode>98108</ZIPCode>
        </AddressUS>
        <EIN>910602278</EIN>
        <PrimaryActivity>FABRICATION</PrimaryActivity>
        <LegalDomicileState>WA</LegalDomicileState>
        <TypeOfEntity>S</TypeOfEntity>
      </Form990ScheduleRPartIV>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>CENTRAL HEATING &amp; AC INC</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>1428 1/2 GRAND AVE</AddressLine1>
          <City>BILLINGS</City>
          <State>MT</State>
          <ZIPCode>59102</ZIPCode>
        </AddressUS>
        <EIN>274095039</EIN>
        <PrimaryActivity>HVAC</PrimaryActivity>
        <LegalDomicileState>MT</LegalDomicileState>
        <TypeOfEntity>S</TypeOfEntity>
      </Form990ScheduleRPartIV>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>CENTRAL MECHANICAL SERVICES</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>619 W J ST</AddressLine1>
          <City>YAKIMA</City>
          <State>WA</State>
          <ZIPCode>98902</ZIPCode>
        </AddressUS>
        <EIN>820557566</EIN>
        <PrimaryActivity>CONTRACTOR</PrimaryActivity>
        <LegalDomicileState>WA</LegalDomicileState>
      </Form990ScheduleRPartIV>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>COBRA BEC INC</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>PO BOX 19068</AddressLine1>
          <City>SPOKANE</City>
          <State>WA</State>
          <ZIPCode>99219</ZIPCode>
        </AddressUS>
        <EIN>911215435</EIN>
        <PrimaryActivity>CONTRACTOR</PrimaryActivity>
        <LegalDomicileState>WA</LegalDomicileState>
        <TypeOfEntity>S</TypeOfEntity>
      </Form990ScheduleRPartIV>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>CRESCENT SHEET METAL INC</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>PO BOX 7285</AddressLine1>
          <City>BONNEY LAKE</City>
          <State>WA</State>
          <ZIPCode>98391</ZIPCode>
        </AddressUS>
        <EIN>911519241</EIN>
        <PrimaryActivity>COMM - HEAT &amp; COOL</PrimaryActivity>
        <LegalDomicileState>WA</LegalDomicileState>
        <TypeOfEntity>S</TypeOfEntity>
      </Form990ScheduleRPartIV>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>DAVE'S HEATING &amp; AIR CONDITIONING INC</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>PO BOX 445</AddressLine1>
          <City>SELAH</City>
          <State>WA</State>
          <ZIPCode>98942</ZIPCode>
        </AddressUS>
        <EIN>273019551</EIN>
        <PrimaryActivity>HVAC</PrimaryActivity>
        <LegalDomicileState>WA</LegalDomicileState>
        <TypeOfEntity>S</TypeOfEntity>
      </Form990ScheduleRPartIV>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>DAVE'S SHEET METAL INC</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>1700 16TH AVE S</AddressLine1>
          <City>GREAT FALLS</City>
          <State>MT</State>
          <ZIPCode>59405</ZIPCode>
        </AddressUS>
        <EIN>810454641</EIN>
        <PrimaryActivity>RES. HEAT &amp; COOL</PrimaryActivity>
        <LegalDomicileState>MT</LegalDomicileState>
        <TypeOfEntity>S</TypeOfEntity>
      </Form990ScheduleRPartIV>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>DELTA TECHNOLOGY CORPORATION</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>1223 VALENTINE AVE SE</AddressLine1>
          <City>PACIFIC</City>
          <State>WA</State>
          <ZIPCode>98047</ZIPCode>
        </AddressUS>
        <EIN>911625675</EIN>
        <PrimaryActivity>HVAC</PrimaryActivity>
        <LegalDomicileState>WA</LegalDomicileState>
        <TypeOfEntity>S</TypeOfEntity>
      </Form990ScheduleRPartIV>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>DIAMOND B CONSTRUCTORS INC</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>3436 AIRPORT DR</AddressLine1>
          <City>BELLINGHAM</City>
          <State>WA</State>
          <ZIPCode>98226</ZIPCode>
        </AddressUS>
        <EIN>910595285</EIN>
        <PrimaryActivity>CONTRACTOR</PrimaryActivity>
        <LegalDomicileState>WA</LegalDomicileState>
        <TypeOfEntity>S</TypeOfEntity>
      </Form990ScheduleRPartIV>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>DIVISION 7 METAL WORKS INC</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>PO BOX 1125</AddressLine1>
          <City>HAYDEN</City>
          <State>ID</State>
          <ZIPCode>83835</ZIPCode>
        </AddressUS>
        <EIN>204403205</EIN>
        <PrimaryActivity>FABRICATION</PrimaryActivity>
        <LegalDomicileState>ID</LegalDomicileState>
        <TypeOfEntity>S</TypeOfEntity>
      </Form990ScheduleRPartIV>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>EJ BARTELLS</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>700 POWELL AVE SW</AddressLine1>
          <City>RENTON</City>
          <State>WA</State>
          <ZIPCode>98057</ZIPCode>
        </AddressUS>
        <EIN>912080617</EIN>
        <PrimaryActivity>CONTRACTOR</PrimaryActivity>
        <LegalDomicileState>WA</LegalDomicileState>
      </Form990ScheduleRPartIV>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>EMPIRE HEATING &amp; COOLING INC</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>PO BOX 31514</AddressLine1>
          <City>BILLINGS</City>
          <State>MT</State>
          <ZIPCode>59107</ZIPCode>
        </AddressUS>
        <EIN>810220422</EIN>
        <PrimaryActivity>HVAC</PrimaryActivity>
        <LegalDomicileState>MT</LegalDomicileState>
        <TypeOfEntity>S</TypeOfEntity>
      </Form990ScheduleRPartIV>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>ENERGY &amp; AIR SYSTEMS INC</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>806 HUGHITT AVE</AddressLine1>
          <City>SUPERIOR</City>
          <State>WI</State>
          <ZIPCode>54880</ZIPCode>
        </AddressUS>
        <EIN>411706648</EIN>
        <PrimaryActivity>HVAC</PrimaryActivity>
        <LegalDomicileState>WI</LegalDomicileState>
        <TypeOfEntity>S</TypeOfEntity>
      </Form990ScheduleRPartIV>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>ENVIROMECH</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>430 SW 153RD ST</AddressLine1>
          <City>BURIEN</City>
          <State>WA</State>
          <ZIPCode>98166</ZIPCode>
        </AddressUS>
        <EIN>911538704</EIN>
        <PrimaryActivity>HVAC</PrimaryActivity>
        <LegalDomicileState>WA</LegalDomicileState>
        <TypeOfEntity>S</TypeOfEntity>
      </Form990ScheduleRPartIV>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>EVERGREEN STATE HEATING &amp; AC</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>2120 PACIFIC AVE</AddressLine1>
          <City>EVERETT</City>
          <State>WA</State>
          <ZIPCode>98201</ZIPCode>
        </AddressUS>
        <EIN>911737008</EIN>
        <PrimaryActivity>HVAC</PrimaryActivity>
        <LegalDomicileState>WA</LegalDomicileState>
        <TypeOfEntity>S</TypeOfEntity>
      </Form990ScheduleRPartIV>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>FALLS SHEET METAL WORKS INC</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>400 CENTRAL AVE W</AddressLine1>
          <City>GREAT FALLS</City>
          <State>MT</State>
          <ZIPCode>59404</ZIPCode>
        </AddressUS>
        <EIN>810379835</EIN>
        <PrimaryActivity>HVAC</PrimaryActivity>
        <LegalDomicileState>MT</LegalDomicileState>
        <TypeOfEntity>S</TypeOfEntity>
      </Form990ScheduleRPartIV>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>FELLER HEATING &amp; AC</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>501 VIRGINIA ST</AddressLine1>
          <City>BELLINGHAM</City>
          <State>WA</State>
          <ZIPCode>98225</ZIPCode>
        </AddressUS>
        <EIN>911618982</EIN>
        <PrimaryActivity>HVAC</PrimaryActivity>
        <LegalDomicileState>WA</LegalDomicileState>
        <TypeOfEntity>S</TypeOfEntity>
      </Form990ScheduleRPartIV>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>F M SHEET METAL INC</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>3000 PIERCE PARKWAY</AddressLine1>
          <City>SPRINGFIELD</City>
          <State>OR</State>
          <ZIPCode>97477</ZIPCode>
        </AddressUS>
        <EIN>931102949</EIN>
        <PrimaryActivity>HVAC</PrimaryActivity>
        <LegalDomicileState>OR</LegalDomicileState>
        <TypeOfEntity>S</TypeOfEntity>
      </Form990ScheduleRPartIV>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>GB SYSTEMS INC</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>7202 NE 175TH ST</AddressLine1>
          <City>KENMORE</City>
          <State>WA</State>
          <ZIPCode>98028</ZIPCode>
        </AddressUS>
        <EIN>911539195</EIN>
        <PrimaryActivity>HVAC</PrimaryActivity>
        <LegalDomicileState>WA</LegalDomicileState>
        <TypeOfEntity>S</TypeOfEntity>
      </Form990ScheduleRPartIV>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>GENERAL MECHANICAL INC</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>9135 KING ST</AddressLine1>
          <City>ANCHORAGE</City>
          <State>AK</State>
          <ZIPCode>99515</ZIPCode>
        </AddressUS>
        <EIN>920143161</EIN>
        <PrimaryActivity>CONTRACTOR</PrimaryActivity>
        <LegalDomicileState>AK</LegalDomicileState>
        <TypeOfEntity>S</TypeOfEntity>
      </Form990ScheduleRPartIV>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>GLACKEN FABRICATION</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>6303 212TH ST SW</AddressLine1>
          <City>LYNNWOOD</City>
          <State>WA</State>
          <ZIPCode>98036</ZIPCode>
        </AddressUS>
        <EIN>263926756</EIN>
        <PrimaryActivity>CONTRACTOR</PrimaryActivity>
        <LegalDomicileState>WA</LegalDomicileState>
      </Form990ScheduleRPartIV>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>H &amp; K SHEETMETAL FABRICATORS INC</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>6517 ARCTIC SPUR RD</AddressLine1>
          <City>ANCHORAGE</City>
          <State>AK</State>
          <ZIPCode>99518</ZIPCode>
        </AddressUS>
        <EIN>920137271</EIN>
        <PrimaryActivity>HVAC</PrimaryActivity>
        <LegalDomicileState>AK</LegalDomicileState>
        <TypeOfEntity>S</TypeOfEntity>
      </Form990ScheduleRPartIV>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>HARBOR VENTILATION</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>PO BOX 1217</AddressLine1>
          <City>ELMA</City>
          <State>WA</State>
          <ZIPCode>98541</ZIPCode>
        </AddressUS>
        <EIN>912708272</EIN>
        <PrimaryActivity>HVAC</PrimaryActivity>
        <LegalDomicileState>WA</LegalDomicileState>
        <TypeOfEntity>S</TypeOfEntity>
      </Form990ScheduleRPartIV>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>HARRIS &amp; HART INC</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>1759 WEST 1200 SOUTH</AddressLine1>
          <City>OGDEN</City>
          <State>UT</State>
          <ZIPCode>84404</ZIPCode>
        </AddressUS>
        <EIN>870494070</EIN>
        <PrimaryActivity>HVAC</PrimaryActivity>
        <LegalDomicileState>UT</LegalDomicileState>
        <TypeOfEntity>S</TypeOfEntity>
      </Form990ScheduleRPartIV>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>HASKELL CORPORATION</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>PO BOX 917</AddressLine1>
          <City>BELLINGHAM</City>
          <State>WA</State>
          <ZIPCode>98227</ZIPCode>
        </AddressUS>
        <EIN>910557196</EIN>
        <PrimaryActivity>CONTRACTOR</PrimaryActivity>
        <LegalDomicileState>WA</LegalDomicileState>
        <TypeOfEntity>S</TypeOfEntity>
      </Form990ScheduleRPartIV>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>HEAT SYSTEMS INC</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>200 W 34TH AVE</AddressLine1>
          <City>ANCHORAGE</City>
          <State>AK</State>
          <ZIPCode>99503</ZIPCode>
        </AddressUS>
        <EIN>911833690</EIN>
        <PrimaryActivity>CONTRACTOR</PrimaryActivity>
        <LegalDomicileState>AK</LegalDomicileState>
        <TypeOfEntity>S</TypeOfEntity>
      </Form990ScheduleRPartIV>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>HOBSON FABRICATING CORPORATION</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>6428 BUSINESS WAY</AddressLine1>
          <City>BOISE</City>
          <State>ID</State>
          <ZIPCode>83716</ZIPCode>
        </AddressUS>
        <EIN>820251720</EIN>
        <PrimaryActivity>CONTRACTOR</PrimaryActivity>
        <LegalDomicileState>ID</LegalDomicileState>
        <TypeOfEntity>S</TypeOfEntity>
      </Form990ScheduleRPartIV>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>HOLADAY-PARKS INC</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>4600 S 134TH PL</AddressLine1>
          <City>SEATTLE</City>
          <State>WA</State>
          <ZIPCode>98168</ZIPCode>
        </AddressUS>
        <EIN>910589113</EIN>
        <PrimaryActivity>CONTRACTOR</PrimaryActivity>
        <LegalDomicileState>WA</LegalDomicileState>
        <TypeOfEntity>S</TypeOfEntity>
      </Form990ScheduleRPartIV>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>HURLIMAN HEATING &amp; AIR CONDITIONING INC</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>515 S DISHMAN MICA RD</AddressLine1>
          <City>SPOKANE</City>
          <State>WA</State>
          <ZIPCode>99206</ZIPCode>
        </AddressUS>
        <EIN>911650724</EIN>
        <PrimaryActivity>CONTRACTOR</PrimaryActivity>
        <LegalDomicileState>WA</LegalDomicileState>
        <TypeOfEntity>S</TypeOfEntity>
      </Form990ScheduleRPartIV>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>INDUSTRIAL SERVICES INC</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>ATTN ANGIE ROSKELLEY</AddressLine1>
          <City>ROCK SPRINGS</City>
          <State>WY</State>
          <ZIPCode>82902</ZIPCode>
        </AddressUS>
        <EIN>841373119</EIN>
        <PrimaryActivity>MAINTENANCE</PrimaryActivity>
        <LegalDomicileState>WY</LegalDomicileState>
        <TypeOfEntity>S</TypeOfEntity>
      </Form990ScheduleRPartIV>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>INLAND AC &amp; HEATING</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>PO BOX 917</AddressLine1>
          <City>RICHLAND</City>
          <State>WA</State>
          <ZIPCode>99352</ZIPCode>
        </AddressUS>
        <EIN>911908011</EIN>
        <PrimaryActivity>HVAC</PrimaryActivity>
        <LegalDomicileState>WA</LegalDomicileState>
        <TypeOfEntity>S</TypeOfEntity>
      </Form990ScheduleRPartIV>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>INTERSTATE SHEET METAL</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>8314 NE 239TH ST</AddressLine1>
          <City>BATTLE GROUND</City>
          <State>WA</State>
          <ZIPCode>98604</ZIPCode>
        </AddressUS>
        <EIN>912048281</EIN>
        <PrimaryActivity>CONTRACTOR</PrimaryActivity>
        <LegalDomicileState>WA</LegalDomicileState>
        <TypeOfEntity>S</TypeOfEntity>
      </Form990ScheduleRPartIV>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>JEM CONTRACTORS INC</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>12805 SHOREWOOD DR SW</AddressLine1>
          <City>BURIEN</City>
          <State>WA</State>
          <ZIPCode>98146</ZIPCode>
        </AddressUS>
        <EIN>912170082</EIN>
        <PrimaryActivity>CONTRACTOR</PrimaryActivity>
        <LegalDomicileState>WA</LegalDomicileState>
        <TypeOfEntity>S</TypeOfEntity>
      </Form990ScheduleRPartIV>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>JOHANSEN MECHANICAL INC</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>20109 144TH AVE NE</AddressLine1>
          <City>WOODINVILLE</City>
          <State>WA</State>
          <ZIPCode>98072</ZIPCode>
        </AddressUS>
        <EIN>911217666</EIN>
        <PrimaryActivity>CONTRACTOR</PrimaryActivity>
        <LegalDomicileState>WA</LegalDomicileState>
        <TypeOfEntity>S</TypeOfEntity>
      </Form990ScheduleRPartIV>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>KETCHIKAN MECHANICAL INC</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>PO BOX 9466</AddressLine1>
          <City>KETCHIKAN</City>
          <State>AK</State>
          <ZIPCode>99901</ZIPCode>
        </AddressUS>
        <EIN>920156603</EIN>
        <PrimaryActivity>HVAC</PrimaryActivity>
        <LegalDomicileState>AK</LegalDomicileState>
        <TypeOfEntity>S</TypeOfEntity>
      </Form990ScheduleRPartIV>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>KOLLMAR INC</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>410 OLD INLAND EMPIRE HWY E</AddressLine1>
          <City>GRANDVIEW</City>
          <State>WA</State>
          <ZIPCode>98930</ZIPCode>
        </AddressUS>
        <EIN>453813694</EIN>
        <PrimaryActivity>FABRICATION</PrimaryActivity>
        <LegalDomicileState>WA</LegalDomicileState>
        <TypeOfEntity>S</TypeOfEntity>
      </Form990ScheduleRPartIV>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>KRUEGER SHEET METAL</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>PO BOX 2963</AddressLine1>
          <City>SPOKANE</City>
          <State>WA</State>
          <ZIPCode>99220</ZIPCode>
        </AddressUS>
        <EIN>910717021</EIN>
        <PrimaryActivity>FABRICATION</PrimaryActivity>
        <LegalDomicileState>WA</LegalDomicileState>
        <TypeOfEntity>C</TypeOfEntity>
      </Form990ScheduleRPartIV>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>L &amp; L MECHANICAL INC</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>556 W HIGHWAY 39</AddressLine1>
          <City>BLACKFOOT</City>
          <State>ID</State>
          <ZIPCode>83221</ZIPCode>
        </AddressUS>
        <EIN>820460553</EIN>
        <PrimaryActivity>HVAC</PrimaryActivity>
        <LegalDomicileState>ID</LegalDomicileState>
        <TypeOfEntity>S</TypeOfEntity>
      </Form990ScheduleRPartIV>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>L &amp; M SM FABRICATORS INC</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>9005 192ND STREET SE</AddressLine1>
          <City>SNOHOMISH</City>
          <State>WA</State>
          <ZIPCode>98296</ZIPCode>
        </AddressUS>
        <EIN>911636711</EIN>
        <PrimaryActivity>HVAC</PrimaryActivity>
        <LegalDomicileState>WA</LegalDomicileState>
        <TypeOfEntity>S</TypeOfEntity>
      </Form990ScheduleRPartIV>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>LARAMIE HEATING AND SHEETMETAL WORKS INC</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>400 S 13TH ST</AddressLine1>
          <City>LARAMIE</City>
          <State>WY</State>
          <ZIPCode>82070</ZIPCode>
        </AddressUS>
        <EIN>830324502</EIN>
        <PrimaryActivity>HVAC</PrimaryActivity>
        <LegalDomicileState>WY</LegalDomicileState>
        <TypeOfEntity>S</TypeOfEntity>
      </Form990ScheduleRPartIV>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>LIMMER ROOFING INC</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>PO BOX 1496</AddressLine1>
          <City>MILLS</City>
          <State>WY</State>
          <ZIPCode>82644</ZIPCode>
        </AddressUS>
        <EIN>201317995</EIN>
        <PrimaryActivity>RES. EXTERIOR</PrimaryActivity>
        <LegalDomicileState>WY</LegalDomicileState>
        <TypeOfEntity>S</TypeOfEntity>
      </Form990ScheduleRPartIV>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>LYONS HEATING &amp; AIR LLC</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>5608 96TH ST E</AddressLine1>
          <City>PUYALLUP</City>
          <State>WA</State>
          <ZIPCode>98371</ZIPCode>
        </AddressUS>
        <EIN>043849533</EIN>
        <PrimaryActivity>CONTRACTOR</PrimaryActivity>
        <LegalDomicileState>WA</LegalDomicileState>
        <TypeOfEntity>S</TypeOfEntity>
      </Form990ScheduleRPartIV>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>M &amp; M FABRICATORS INC</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>2004 S 14TH ST</AddressLine1>
          <City>YAKIMA</City>
          <State>WA</State>
          <ZIPCode>98903</ZIPCode>
        </AddressUS>
        <EIN>910989052</EIN>
        <PrimaryActivity>FABRICATION</PrimaryActivity>
        <LegalDomicileState>WA</LegalDomicileState>
        <TypeOfEntity>S</TypeOfEntity>
      </Form990ScheduleRPartIV>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>MACDONALD-MILLER FACILITY SOLUTIONS</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>7717 DETROIT AVE SW</AddressLine1>
          <City>SEATTLE</City>
          <State>WA</State>
          <ZIPCode>98106</ZIPCode>
        </AddressUS>
        <EIN>680533726</EIN>
        <PrimaryActivity>HVAC</PrimaryActivity>
        <LegalDomicileState>WA</LegalDomicileState>
        <TypeOfEntity>S</TypeOfEntity>
      </Form990ScheduleRPartIV>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>MCKINSTRY COMPANY LLC</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>PO BOX 24567</AddressLine1>
          <City>SEATTLE</City>
          <State>WA</State>
          <ZIPCode>98124</ZIPCode>
        </AddressUS>
        <EIN>204030425</EIN>
        <PrimaryActivity>MANUFACTURING</PrimaryActivity>
        <LegalDomicileState>WA</LegalDomicileState>
      </Form990ScheduleRPartIV>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>MD EXTERIORS INC</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>PO BOX 13507</AddressLine1>
          <City>MILL CREEK</City>
          <State>WA</State>
          <ZIPCode>98082</ZIPCode>
        </AddressUS>
        <EIN>208035959</EIN>
        <PrimaryActivity>RES. EXTERIOR</PrimaryActivity>
        <LegalDomicileState>WA</LegalDomicileState>
        <TypeOfEntity>S</TypeOfEntity>
      </Form990ScheduleRPartIV>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>METAL WORKS OF MONTANA INC</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>PO BOX 10</AddressLine1>
          <City>MISSOULA</City>
          <State>MT</State>
          <ZIPCode>59806</ZIPCode>
        </AddressUS>
        <EIN>810428413</EIN>
        <PrimaryActivity>CONTRACTOR</PrimaryActivity>
        <LegalDomicileState>MT</LegalDomicileState>
        <TypeOfEntity>S</TypeOfEntity>
      </Form990ScheduleRPartIV>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>METALWORKS LLC</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>9500 N DOUGLAS HWY</AddressLine1>
          <City>JUNEAU</City>
          <State>AK</State>
          <ZIPCode>99801</ZIPCode>
        </AddressUS>
        <EIN>204452355</EIN>
        <PrimaryActivity>HVAC</PrimaryActivity>
        <LegalDomicileState>AK</LegalDomicileState>
        <TypeOfEntity>S</TypeOfEntity>
      </Form990ScheduleRPartIV>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>MIDWEST HEATING &amp; COOLING</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>704 DUNHAM AVE</AddressLine1>
          <City>BILLINGS</City>
          <State>MT</State>
          <ZIPCode>59102</ZIPCode>
        </AddressUS>
        <EIN>810308902</EIN>
        <PrimaryActivity>HVAC</PrimaryActivity>
        <LegalDomicileState>MT</LegalDomicileState>
        <TypeOfEntity>S</TypeOfEntity>
      </Form990ScheduleRPartIV>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>MILLER'S SMITH &amp; LOSLI</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>PO BOX 385</AddressLine1>
          <City>ABERDEEN</City>
          <State>WA</State>
          <ZIPCode>98520</ZIPCode>
        </AddressUS>
        <EIN>911435420</EIN>
        <PrimaryActivity>FABRICATION</PrimaryActivity>
        <LegalDomicileState>WA</LegalDomicileState>
        <TypeOfEntity>S</TypeOfEntity>
      </Form990ScheduleRPartIV>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>MOFFITT MECHANICAL LLC</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>1351 13TH AVE S</AddressLine1>
          <City>JACKSONVILLE BEACH</City>
          <State>FL</State>
          <ZIPCode>32250</ZIPCode>
        </AddressUS>
        <EIN>203840423</EIN>
        <PrimaryActivity>HVAC</PrimaryActivity>
        <LegalDomicileState>FL</LegalDomicileState>
        <TypeOfEntity>S</TypeOfEntity>
      </Form990ScheduleRPartIV>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>NEUDORFER ENGINEERS INC</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>5516 1ST AVE SOUTH</AddressLine1>
          <City>SEATTLE</City>
          <State>WA</State>
          <ZIPCode>98108</ZIPCode>
        </AddressUS>
        <EIN>911124233</EIN>
        <PrimaryActivity>TESTING</PrimaryActivity>
        <LegalDomicileState>WA</LegalDomicileState>
        <TypeOfEntity>S</TypeOfEntity>
      </Form990ScheduleRPartIV>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>NICHOLLS SHEET METAL INC</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>1209 W SILVER ST</AddressLine1>
          <City>BUTTE</City>
          <State>MT</State>
          <ZIPCode>59701</ZIPCode>
        </AddressUS>
        <EIN>651278920</EIN>
        <PrimaryActivity>HVAC</PrimaryActivity>
        <LegalDomicileState>MT</LegalDomicileState>
        <TypeOfEntity>S</TypeOfEntity>
      </Form990ScheduleRPartIV>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>NORPAC SHEET METAL INC</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>2041 HARNISH BLVD</AddressLine1>
          <City>BILLINGS</City>
          <State>MT</State>
          <ZIPCode>59107</ZIPCode>
        </AddressUS>
        <EIN>810452017</EIN>
        <PrimaryActivity>HVAC</PrimaryActivity>
        <LegalDomicileState>MT</LegalDomicileState>
        <TypeOfEntity>S</TypeOfEntity>
      </Form990ScheduleRPartIV>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>OLYMPIA SHEET METAL INC</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>2839 MARVIN RD NE</AddressLine1>
          <City>OLYMPIA</City>
          <State>WA</State>
          <ZIPCode>98506</ZIPCode>
        </AddressUS>
        <EIN>911714004</EIN>
        <PrimaryActivity>HVAC</PrimaryActivity>
        <LegalDomicileState>WA</LegalDomicileState>
        <TypeOfEntity>S</TypeOfEntity>
      </Form990ScheduleRPartIV>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>PACIFIC MECHANICAL SYSTEMS INC</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>2100 196TH ST SW</AddressLine1>
          <City>LYNNWOOD</City>
          <State>WA</State>
          <ZIPCode>98036</ZIPCode>
        </AddressUS>
        <EIN>911748712</EIN>
        <PrimaryActivity>COMM - HEAT &amp; COOL</PrimaryActivity>
        <LegalDomicileState>WA</LegalDomicileState>
        <TypeOfEntity>C</TypeOfEntity>
      </Form990ScheduleRPartIV>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>PACIFIC SHEET METAL INC</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>1128 SW SPOKANE ST</AddressLine1>
          <City>SEATTLE</City>
          <State>WA</State>
          <ZIPCode>98134</ZIPCode>
        </AddressUS>
        <EIN>910664528</EIN>
        <PrimaryActivity>MANUFACTURING</PrimaryActivity>
        <LegalDomicileState>WA</LegalDomicileState>
        <TypeOfEntity>S</TypeOfEntity>
      </Form990ScheduleRPartIV>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>PACIFIC SHIP REPAIR</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>1625 RIGEE ST</AddressLine1>
          <City>SAN DIEGO</City>
          <State>CA</State>
          <ZIPCode>92113</ZIPCode>
        </AddressUS>
        <EIN>952662789</EIN>
        <PrimaryActivity>SHIP REPAIR</PrimaryActivity>
        <LegalDomicileState>CA</LegalDomicileState>
        <TypeOfEntity>S</TypeOfEntity>
      </Form990ScheduleRPartIV>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>PARSONS CONSTRUCTORS INC</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>10235 S JORDAN GATEWAY</AddressLine1>
          <City>SOUTH JORDAN</City>
          <State>UT</State>
          <ZIPCode>84095</ZIPCode>
        </AddressUS>
        <EIN>953297184</EIN>
        <PrimaryActivity>CONTRACTOR</PrimaryActivity>
        <LegalDomicileState>UT</LegalDomicileState>
        <TypeOfEntity>S</TypeOfEntity>
      </Form990ScheduleRPartIV>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>PENDLETON HEATING &amp; AC</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>1816 NW 48TH ST</AddressLine1>
          <City>PENDLETON</City>
          <State>OR</State>
          <ZIPCode>97801</ZIPCode>
        </AddressUS>
        <EIN>931025889</EIN>
        <PrimaryActivity>HVAC</PrimaryActivity>
        <LegalDomicileState>OR</LegalDomicileState>
        <TypeOfEntity>S</TypeOfEntity>
      </Form990ScheduleRPartIV>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>PERFORMANCE ABATEMENT SERVICES</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>PO BOX 2198</AddressLine1>
          <City>SHAWNEE MISSION</City>
          <State>KS</State>
          <ZIPCode>66201</ZIPCode>
        </AddressUS>
        <EIN>561552573</EIN>
        <PrimaryActivity>CONTRACTOR</PrimaryActivity>
        <LegalDomicileState>KS</LegalDomicileState>
        <TypeOfEntity>S</TypeOfEntity>
      </Form990ScheduleRPartIV>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>PCI-PERFORMACE CONTRACTING INC</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>PO BOX 2198</AddressLine1>
          <City>SHAWNEE MISSION</City>
          <State>KS</State>
          <ZIPCode>66201</ZIPCode>
        </AddressUS>
        <EIN>341478097</EIN>
        <PrimaryActivity>CONTRACTOR</PrimaryActivity>
        <LegalDomicileState>KS</LegalDomicileState>
        <TypeOfEntity>S</TypeOfEntity>
      </Form990ScheduleRPartIV>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>PHOENIX MECHANICAL INC</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>11119 VALLEY AVE E</AddressLine1>
          <City>PUYALLUP</City>
          <State>WA</State>
          <ZIPCode>98372</ZIPCode>
        </AddressUS>
        <EIN>800791087</EIN>
        <PrimaryActivity>HVAC</PrimaryActivity>
        <LegalDomicileState>WA</LegalDomicileState>
        <TypeOfEntity>S</TypeOfEntity>
      </Form990ScheduleRPartIV>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>PRECISION AIR BALANCE</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>35925 KING SALMON AVE</AddressLine1>
          <City>SOLDOTNA</City>
          <State>AK</State>
          <ZIPCode>99669</ZIPCode>
        </AddressUS>
        <EIN>920144795</EIN>
        <PrimaryActivity>TESTING</PrimaryActivity>
        <LegalDomicileState>AK</LegalDomicileState>
        <TypeOfEntity>S</TypeOfEntity>
      </Form990ScheduleRPartIV>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>PREMIER STAINLESS INSTALLATION</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>1010 129TH ST S</AddressLine1>
          <City>TACOMA</City>
          <State>WA</State>
          <ZIPCode>98444</ZIPCode>
        </AddressUS>
        <EIN>753011404</EIN>
        <PrimaryActivity>CONTRACTOR</PrimaryActivity>
        <LegalDomicileState>WA</LegalDomicileState>
        <TypeOfEntity>S</TypeOfEntity>
      </Form990ScheduleRPartIV>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>PRO MECHANICAL SERVICES</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>PO BOX 6526</AddressLine1>
          <City>SPOKANE</City>
          <State>WA</State>
          <ZIPCode>99217</ZIPCode>
        </AddressUS>
        <EIN>272623902</EIN>
        <PrimaryActivity>FABRICATION</PrimaryActivity>
        <LegalDomicileState>WA</LegalDomicileState>
        <TypeOfEntity>S</TypeOfEntity>
      </Form990ScheduleRPartIV>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>PSF MECHANICAL INC</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>9322 14TH AVE S</AddressLine1>
          <City>SEATTLE</City>
          <State>WA</State>
          <ZIPCode>98108</ZIPCode>
        </AddressUS>
        <EIN>911520404</EIN>
        <PrimaryActivity>HVAC</PrimaryActivity>
        <LegalDomicileState>WA</LegalDomicileState>
        <TypeOfEntity>S</TypeOfEntity>
      </Form990ScheduleRPartIV>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>R S I</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>12410 BEVERLY PARK RD</AddressLine1>
          <City>LYNNWOOD</City>
          <State>WA</State>
          <ZIPCode>98036</ZIPCode>
        </AddressUS>
        <EIN>911612645</EIN>
        <PrimaryActivity>FABRICATION</PrimaryActivity>
        <LegalDomicileState>WA</LegalDomicileState>
        <TypeOfEntity>S</TypeOfEntity>
      </Form990ScheduleRPartIV>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>REFRIGERATION UNLIMITED INC</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>5440 S PROCTOR</AddressLine1>
          <City>TACOMA</City>
          <State>WA</State>
          <ZIPCode>98409</ZIPCode>
        </AddressUS>
        <EIN>911936121</EIN>
        <PrimaryActivity>COMM - HEAT &amp; COOL</PrimaryActivity>
        <LegalDomicileState>WA</LegalDomicileState>
        <TypeOfEntity>S</TypeOfEntity>
      </Form990ScheduleRPartIV>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>RICKETTS METAL MANUFACTURING</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>6720 FLEMING ST</AddressLine1>
          <City>EVERETT</City>
          <State>WA</State>
          <ZIPCode>98203</ZIPCode>
        </AddressUS>
        <EIN>911353484</EIN>
        <PrimaryActivity>HVAC</PrimaryActivity>
        <LegalDomicileState>WA</LegalDomicileState>
        <TypeOfEntity>S</TypeOfEntity>
      </Form990ScheduleRPartIV>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>RIGHT ON HEATING &amp; SHEET METAL INC</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>PO BOX 758</AddressLine1>
          <City>LAKE STEVENS</City>
          <State>WA</State>
          <ZIPCode>98258</ZIPCode>
        </AddressUS>
        <EIN>710869614</EIN>
        <PrimaryActivity>HVAC</PrimaryActivity>
        <LegalDomicileState>WA</LegalDomicileState>
        <TypeOfEntity>S</TypeOfEntity>
      </Form990ScheduleRPartIV>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>RSB CONSTRUCTION INC</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>17719 PACIFIC AVE S</AddressLine1>
          <City>SPANAWAY</City>
          <State>WA</State>
          <ZIPCode>98387</ZIPCode>
        </AddressUS>
        <EIN>911730794</EIN>
        <PrimaryActivity>COMM - EXTERIOR</PrimaryActivity>
        <LegalDomicileState>WA</LegalDomicileState>
        <TypeOfEntity>S</TypeOfEntity>
      </Form990ScheduleRPartIV>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>S &amp; R SHEET METAL INC</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>1300 WALNUT STREET</AddressLine1>
          <City>KELSO</City>
          <State>WA</State>
          <ZIPCode>98626</ZIPCode>
        </AddressUS>
        <EIN>911098409</EIN>
        <PrimaryActivity>FABRICATION</PrimaryActivity>
        <LegalDomicileState>WA</LegalDomicileState>
        <TypeOfEntity>S</TypeOfEntity>
      </Form990ScheduleRPartIV>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>SCHMOLCK MECHANICAL CONTRACTORS</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>PO BOX 8756</AddressLine1>
          <City>KETCHIKAN</City>
          <State>AK</State>
          <ZIPCode>99901</ZIPCode>
        </AddressUS>
        <EIN>920090086</EIN>
        <PrimaryActivity>HVAC</PrimaryActivity>
        <LegalDomicileState>AK</LegalDomicileState>
        <TypeOfEntity>S</TypeOfEntity>
      </Form990ScheduleRPartIV>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>S &amp; S METAL FABRICATION INC</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>1551 S TACOMA WAY</AddressLine1>
          <City>TACOMA</City>
          <State>WA</State>
          <ZIPCode>98409</ZIPCode>
        </AddressUS>
        <EIN>208954460</EIN>
        <PrimaryActivity>FABRICATION</PrimaryActivity>
        <LegalDomicileState>WA</LegalDomicileState>
        <TypeOfEntity>S</TypeOfEntity>
      </Form990ScheduleRPartIV>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>SCOTT &amp; FROM CO INC</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>3820 S JUNETT</AddressLine1>
          <City>TACOMA</City>
          <State>WA</State>
          <ZIPCode>98409</ZIPCode>
        </AddressUS>
        <EIN>911020772</EIN>
        <PrimaryActivity>CONTRACTOR</PrimaryActivity>
        <LegalDomicileState>WA</LegalDomicileState>
        <TypeOfEntity>S</TypeOfEntity>
      </Form990ScheduleRPartIV>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>SHINN MECHANICAL</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>18802 80TH PL S</AddressLine1>
          <City>KENT</City>
          <State>WA</State>
          <ZIPCode>98032</ZIPCode>
        </AddressUS>
        <EIN>911660433</EIN>
        <PrimaryActivity>FABRICATION</PrimaryActivity>
        <LegalDomicileState>WA</LegalDomicileState>
        <TypeOfEntity>S</TypeOfEntity>
      </Form990ScheduleRPartIV>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>SMK SERVICE INC</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>PO BOX 6231</AddressLine1>
          <City>SPOKANE</City>
          <State>WA</State>
          <ZIPCode>99217</ZIPCode>
        </AddressUS>
        <EIN>562440234</EIN>
        <PrimaryActivity>HVAC</PrimaryActivity>
        <LegalDomicileState>WA</LegalDomicileState>
        <TypeOfEntity>S</TypeOfEntity>
      </Form990ScheduleRPartIV>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>STAINLESS SPECIALISTS INC</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>PO BOX 687</AddressLine1>
          <City>WAUSAU</City>
          <State>WI</State>
          <ZIPCode>54402</ZIPCode>
        </AddressUS>
        <PrimaryActivity>MANUFACTURING</PrimaryActivity>
        <LegalDomicileState>WI</LegalDomicileState>
        <TypeOfEntity>S</TypeOfEntity>
      </Form990ScheduleRPartIV>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>SUN-AIR SHEET METAL</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>3250 EASY STREET</AddressLine1>
          <City>FAIRBANKS</City>
          <State>AK</State>
          <ZIPCode>99701</ZIPCode>
        </AddressUS>
        <EIN>920081988</EIN>
        <PrimaryActivity>HVAC</PrimaryActivity>
        <LegalDomicileState>AK</LegalDomicileState>
        <TypeOfEntity>S</TypeOfEntity>
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      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>SUPERIOR AIR HANDLING</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>909 MONTREAL CIRCLE</AddressLine1>
          <City>SAINT PAUL</City>
          <State>MN</State>
          <ZIPCode>55102</ZIPCode>
        </AddressUS>
        <EIN>262555832</EIN>
        <PrimaryActivity>HVAC</PrimaryActivity>
        <LegalDomicileState>MN</LegalDomicileState>
        <TypeOfEntity>S</TypeOfEntity>
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      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>SUPERIOR GROUP INC</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>8861 ELIM ST</AddressLine1>
          <City>ANCHORAGE</City>
          <State>AK</State>
          <ZIPCode>99507</ZIPCode>
        </AddressUS>
        <EIN>920031270</EIN>
        <PrimaryActivity>CONTRACTOR</PrimaryActivity>
        <LegalDomicileState>AK</LegalDomicileState>
        <TypeOfEntity>S</TypeOfEntity>
      </Form990ScheduleRPartIV>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>SUPERIOR PLUMBING &amp; HEATING</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>8861 ELIM ST</AddressLine1>
          <City>ANCHORAGE</City>
          <State>AK</State>
          <ZIPCode>99507</ZIPCode>
        </AddressUS>
        <EIN>920031270</EIN>
        <PrimaryActivity>CONTRACTOR</PrimaryActivity>
        <LegalDomicileState>AK</LegalDomicileState>
        <TypeOfEntity>S</TypeOfEntity>
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      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>TAKU METAL WORKS</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>1701 STRATFORD CT</AddressLine1>
          <City>ANCHORAGE</City>
          <State>AK</State>
          <ZIPCode>99508</ZIPCode>
        </AddressUS>
        <EIN>920170233</EIN>
        <PrimaryActivity>HVAC</PrimaryActivity>
        <LegalDomicileState>AK</LegalDomicileState>
        <TypeOfEntity>S</TypeOfEntity>
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      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>TEMP CONTROL MECHANICAL SERVICE</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>8310 30TH AVE NE</AddressLine1>
          <City>LACEY</City>
          <State>WA</State>
          <ZIPCode>98516</ZIPCode>
        </AddressUS>
        <EIN>931154640</EIN>
        <PrimaryActivity>HVAC</PrimaryActivity>
        <LegalDomicileState>WA</LegalDomicileState>
        <TypeOfEntity>S</TypeOfEntity>
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      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>THOMPSON RIVER HEATING INC</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>PO BOX 1628</AddressLine1>
          <City>THOMPSON FALLS</City>
          <State>MT</State>
          <ZIPCode>59873</ZIPCode>
        </AddressUS>
        <EIN>810501555</EIN>
        <PrimaryActivity>HVAC</PrimaryActivity>
        <LegalDomicileState>MT</LegalDomicileState>
        <TypeOfEntity>S</TypeOfEntity>
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      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>T I NORTHWEST CORP</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>121 23RD ST SE</AddressLine1>
          <City>PUYALLUP</City>
          <State>WA</State>
          <ZIPCode>98372</ZIPCode>
        </AddressUS>
        <EIN>911716174</EIN>
        <PrimaryActivity>HVAC</PrimaryActivity>
        <LegalDomicileState>WA</LegalDomicileState>
        <TypeOfEntity>S</TypeOfEntity>
      </Form990ScheduleRPartIV>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>TIM FORCE TIN SHOP INC</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>814 WINBORNE</AddressLine1>
          <City>CASPER</City>
          <State>WY</State>
          <ZIPCode>82602</ZIPCode>
        </AddressUS>
        <EIN>830208646</EIN>
        <PrimaryActivity>HVAC</PrimaryActivity>
        <LegalDomicileState>WY</LegalDomicileState>
        <TypeOfEntity>S</TypeOfEntity>
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      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>TIN WORKS INC</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>PO BOX 1244</AddressLine1>
          <City>BOZEMAN</City>
          <State>MT</State>
          <ZIPCode>59771</ZIPCode>
        </AddressUS>
        <EIN>810464791</EIN>
        <PrimaryActivity>HVAC</PrimaryActivity>
        <LegalDomicileState>MT</LegalDomicileState>
        <TypeOfEntity>S</TypeOfEntity>
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      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>TOTAL ENERGY MANAGEMENT INC</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>1975 BUTLER LOOP RD</AddressLine1>
          <City>RICHLAND</City>
          <State>WA</State>
          <ZIPCode>99352</ZIPCode>
        </AddressUS>
        <EIN>911255523</EIN>
        <PrimaryActivity>HVAC</PrimaryActivity>
        <LegalDomicileState>WA</LegalDomicileState>
        <TypeOfEntity>S</TypeOfEntity>
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      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>TRI-COUNTY MECHANICAL &amp; ELECTRICAL INC</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>PO BOX 5928</AddressLine1>
          <City>HELENA</City>
          <State>MT</State>
          <ZIPCode>59601</ZIPCode>
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        <EIN>810310140</EIN>
        <PrimaryActivity>CONTRACTOR</PrimaryActivity>
        <LegalDomicileState>MT</LegalDomicileState>
        <TypeOfEntity>S</TypeOfEntity>
      </Form990ScheduleRPartIV>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>UPTOWN MECHANICAL</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>2223 202ND ST SW</AddressLine1>
          <City>LYNNWOOD</City>
          <State>WA</State>
          <ZIPCode>98036</ZIPCode>
        </AddressUS>
        <EIN>352203613</EIN>
        <PrimaryActivity>HVAC</PrimaryActivity>
        <LegalDomicileState>WA</LegalDomicileState>
        <TypeOfEntity>S</TypeOfEntity>
      </Form990ScheduleRPartIV>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>US ENGINEERING COMPANY</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>ATTN PAYROLL DEPARTMENT</AddressLine1>
          <City>KANSAS CITY</City>
          <State>MO</State>
          <ZIPCode>64111</ZIPCode>
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        <EIN>440470840</EIN>
        <PrimaryActivity>CONTRACTOR</PrimaryActivity>
        <LegalDomicileState>MO</LegalDomicileState>
        <TypeOfEntity>S</TypeOfEntity>
      </Form990ScheduleRPartIV>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>US SHEET METAL COMPANY INC</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>1325 SOUTH TACOMA WAY</AddressLine1>
          <City>TACOMA</City>
          <State>WA</State>
          <ZIPCode>98409</ZIPCode>
        </AddressUS>
        <EIN>910824179</EIN>
        <PrimaryActivity>FABRICATION</PrimaryActivity>
        <LegalDomicileState>WA</LegalDomicileState>
        <TypeOfEntity>S</TypeOfEntity>
      </Form990ScheduleRPartIV>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>VALLEY MECHANICAL INC</BusinessNameLine1>
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        <AddressUS>
          <AddressLine1>10 N TENTH</AddressLine1>
          <City>WALLA WALLA</City>
          <State>WA</State>
          <ZIPCode>99362</ZIPCode>
        </AddressUS>
        <EIN>911264296</EIN>
        <PrimaryActivity>HVAC</PrimaryActivity>
        <LegalDomicileState>WA</LegalDomicileState>
        <TypeOfEntity>S</TypeOfEntity>
      </Form990ScheduleRPartIV>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>VANCE HEATING &amp; AC</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>PO BOX 2804</AddressLine1>
          <City>YAKIMA</City>
          <State>WA</State>
          <ZIPCode>98907</ZIPCode>
        </AddressUS>
        <EIN>911570868</EIN>
        <PrimaryActivity>HVAC</PrimaryActivity>
        <LegalDomicileState>WA</LegalDomicileState>
        <TypeOfEntity>S</TypeOfEntity>
      </Form990ScheduleRPartIV>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>VITAL MECHANICAL SERVICE INC</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>13106 SE 240TH ST</AddressLine1>
          <City>KENT</City>
          <State>WA</State>
          <ZIPCode>98031</ZIPCode>
        </AddressUS>
        <EIN>201342870</EIN>
        <PrimaryActivity>HVAC</PrimaryActivity>
        <LegalDomicileState>WA</LegalDomicileState>
        <TypeOfEntity>S</TypeOfEntity>
      </Form990ScheduleRPartIV>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>WADECO INC</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>PO BOX 52</AddressLine1>
          <City>WENATCHEE</City>
          <State>WA</State>
          <ZIPCode>98807</ZIPCode>
        </AddressUS>
        <EIN>911699801</EIN>
        <PrimaryActivity>HVAC</PrimaryActivity>
        <LegalDomicileState>WA</LegalDomicileState>
        <TypeOfEntity>S</TypeOfEntity>
      </Form990ScheduleRPartIV>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>WESTERN MECHANICAL SYSTEMS INC</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>1911 SW CAMPUS DR</AddressLine1>
          <City>FEDERAL WAY</City>
          <State>WA</State>
          <ZIPCode>98023</ZIPCode>
        </AddressUS>
        <EIN>261461000</EIN>
        <PrimaryActivity>HVAC</PrimaryActivity>
        <LegalDomicileState>WA</LegalDomicileState>
        <TypeOfEntity>S</TypeOfEntity>
      </Form990ScheduleRPartIV>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>WESTERN SHEET METAL INC</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>2604 SEWARD HIGHWAY</AddressLine1>
          <City>ANCHORAGE</City>
          <State>AK</State>
          <ZIPCode>99503</ZIPCode>
        </AddressUS>
        <EIN>800521849</EIN>
        <PrimaryActivity>HVAC</PrimaryActivity>
        <LegalDomicileState>AK</LegalDomicileState>
        <TypeOfEntity>S</TypeOfEntity>
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      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>WHITE FOX BUILDING SERVICES LLC</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>6040 STAEDEM DR</AddressLine1>
          <City>ANCHORAGE</City>
          <State>AK</State>
          <ZIPCode>99504</ZIPCode>
        </AddressUS>
        <EIN>454392900</EIN>
        <PrimaryActivity>HVAC</PrimaryActivity>
        <LegalDomicileState>AK</LegalDomicileState>
        <TypeOfEntity>S</TypeOfEntity>
      </Form990ScheduleRPartIV>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>WILBUR BROTHERS</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>1241 NOBLE STREET</AddressLine1>
          <City>FAIRBANKS</City>
          <State>AK</State>
          <ZIPCode>99701</ZIPCode>
        </AddressUS>
        <EIN>920164191</EIN>
        <PrimaryActivity>MANUFACTURING</PrimaryActivity>
        <LegalDomicileState>AK</LegalDomicileState>
        <TypeOfEntity>S</TypeOfEntity>
      </Form990ScheduleRPartIV>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>WILLIAMS MECHANICAL INC</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>3903 SMITH AVE</AddressLine1>
          <City>EVERETT</City>
          <State>WA</State>
          <ZIPCode>98201</ZIPCode>
        </AddressUS>
        <EIN>911569019</EIN>
        <PrimaryActivity>HVAC</PrimaryActivity>
        <LegalDomicileState>WA</LegalDomicileState>
        <TypeOfEntity>S</TypeOfEntity>
      </Form990ScheduleRPartIV>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>WILLIAMS PLANT SERVICES LLC</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>100 CRESCENT CENTRE PARKWAY</AddressLine1>
          <City>TUCKER</City>
          <State>GA</State>
          <ZIPCode>30084</ZIPCode>
        </AddressUS>
        <EIN>830379575</EIN>
        <PrimaryActivity>MAINTENANCE</PrimaryActivity>
        <LegalDomicileState>GA</LegalDomicileState>
        <TypeOfEntity>C</TypeOfEntity>
      </Form990ScheduleRPartIV>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>ZUIDERWEG CONSTRUCTION</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>20606 101ST AVE NW</AddressLine1>
          <City>ARLINGTON</City>
          <State>WA</State>
          <ZIPCode>98223</ZIPCode>
        </AddressUS>
        <EIN>562429048</EIN>
        <PrimaryActivity>CONTRACTOR</PrimaryActivity>
        <LegalDomicileState>WA</LegalDomicileState>
      </Form990ScheduleRPartIV>
      <ReceiptOfIntAnnRentsRoyalties>0</ReceiptOfIntAnnRentsRoyalties>
      <GiftGrantOrCapContrToOtherOrg>0</GiftGrantOrCapContrToOtherOrg>
      <GiftGrantOrCapContrFrOtherOrg>0</GiftGrantOrCapContrFrOtherOrg>
      <LoansOrGuaranteesToOtherOrg>0</LoansOrGuaranteesToOtherOrg>
      <LoansOrGuaranteesFromOtherOrg>0</LoansOrGuaranteesFromOtherOrg>
      <SaleOfAssetsToOtherOrg>0</SaleOfAssetsToOtherOrg>
      <PurchaseOfAssetsFromOtherOrg>0</PurchaseOfAssetsFromOtherOrg>
      <ExchangeOfAssets>0</ExchangeOfAssets>
      <RentalOfFacilitiesToOtherOrgs>0</RentalOfFacilitiesToOtherOrgs>
      <RentalOfFacilitiesFrOtherOrgs>0</RentalOfFacilitiesFrOtherOrgs>
      <PerformOfServicesForOtherOrgs>1</PerformOfServicesForOtherOrgs>
      <PerformOfServicesByOtherOrgs>0</PerformOfServicesByOtherOrgs>
      <SharingOfFacilities>0</SharingOfFacilities>
      <SharingOfPaidEmployees>0</SharingOfPaidEmployees>
      <ReimbursementPaidToOtherOrg>0</ReimbursementPaidToOtherOrg>
      <ReimbursementPaidByOtherOrg>0</ReimbursementPaidByOtherOrg>
      <OtherTransferToOtherOrg>0</OtherTransferToOtherOrg>
      <OtherTransferFromOtherOrg>0</OtherTransferFromOtherOrg>
      <Form990ScheduleRPartVII>
        <Identifier>RELATED ORGANIZATIONS TAXABLE AS SOLE PROPRIETORSHIPS</Identifier>
        <ReturnReference>SCHEDULE R</ReturnReference>
        <Explanation>ACCU DUCT MANUFACTURING316 ELLINGSON RD ALGONAWA 98001 91-1386784 AIR-GO PO BOX 3181 LACEY WA 98509 52-4853906 CJ HVAC CONSULTING LLC 1000 TOWN CTR NETACOMA WA 9842220-2668767 COPPER CITY SHEET METAL &amp; A/C 109 E COMMERCIAL AVE ANACONDA MT 59711 81-0438017 HEAVY METAL WORKS PO BOX 515 LANGLEY WA98260 30-0433741 MBR MECHANICAL, INC. 2728 E 68TH AVE ANCHORAGE AK 9950792-0055010</Explanation>
      </Form990ScheduleRPartVII>
      <Form990ScheduleRPartVII>
        <Identifier>OTHER RELATED ORGANIZATIONS</Identifier>
        <ReturnReference>SCHEDULE R</ReturnReference>
        <Explanation>A &amp; R METAL PRODUCTS 413 FETTERMAN ST LARAMIE WY 82070 ABLITT METAL PRODUCTS, INC. 1725 PENNSYLVANIA AVE BREMERTON WA 98337 ADVANCED THERMAL SOLUTIONS PO BOX 4420 CASPER WY 82604 ALEUT GLOBAL SOLUTIONS 5520 TECH CENTER DR COLORADO SPRINGS CO 80919 AMERICAN AIR MEASUREMENT LLC 19338 NE 200TH ST WOODINVILLE WA 98077 ASSOCIATED HTG &amp; S/M PO BOX 309 MONROE WA 98272 AUBURN MECHANICAL 2623 W VALLEY HWY N AUBURN WA 98001 B &amp; D ENTERPRISES 778-A N PARK DIETRICH ID 83324 BARRON HEATING &amp; A/C, INC. PO BOX 1118 BELLINGHAM WA 98227 CH2M-WG IDAHO LLC PO BOX 1625 IDAHO FALLS ID 83415 D/B SOLUTIONS LLC 2100 196TH ST SW LYNNWOOD WA 98036 D J MECHANICAL, INC. 5716 119TH AVE NE LAKE STEVENS WA 98258 DIVERSIFIED METAL PRODUCTS, INC. 3710 N YELLOWSTONE HWY IDAHO FALLS ID 83401 FLEMING CONSULTING SERVICE INC 14601 226TH AVE NE WOODINVILLE WA 98077 FURNACE SHOP PO BOX 47 RAMSAY MT 59748 J W BROWER HEATING &amp; A/C 3424 SOUTH TACOMA WAY TACOMA WA 98409 LAKEBAY MECHANICAL, INC. 17313 17TH ST CT KP S LAKEBAY WA 98349 MOSES LAKE SHEET METAL PO BOX 550 MOSES LAKE WA 98837 NOBLE MECHANICAL, INC PO BOX 111209 ANCHORAGE AK 99511 NORTH PARK HEATING CO 19204 BALLINGER RD SEATTLE WA 98155 NORTHSHORE SHEET METAL, INC. 11831 BEVERLY PARK RD BLDG C EVERETT WA 98204 ORION SHEET METAL, INC. 1128 SW SPOKANE ST SEATTLE WA 98134 P1 GROUP 16210 W 108TH ST LENEXA KS 66219 PERFORMANCE CANOPY &amp; INSTALLATION 812 DUVALL PL NE RENTON WA 98059 PROJECT SHEET METAL, INC. PO BOX 81034 BILLINGS MT 59108 RELIABLE SHEET METAL PO BOX 20222 JUNEAU AK 99802 ROGUE ARCHITECTRUAL METALS, INC. 10019 50TH PL W MUKILTEO WA 98275 SCHMITTS SHEET METAL &amp; ROOFING 32 PROSPECT PL PORT ANGELES WA 98362 SEATTLE SCHOOL DISTRICK #1 MS33-344 SEATTLE WA 98124 SIMPSON COMPANY LLC 321 BASHER DR BERTHOUD CO 80513 SPOKANE TIN &amp; SHEET IRON WORKERS, INC. 3807 E FERRY SPOKANE WA 99202 TAC SYSTEMS LLC 8403 KICKERVILLE RD BLAINE WA 98230 TACOMA ARCHITECTURAL METALS LLC PO BOX 97056 TACOMA WA 98497 TRUEPOINT METALWORKS &amp; WELDING 9616 JAMES RD SW ROCHESTER WA 98579 T R S MECHANICAL PO BOX 1315 SPANAWAY WA 98387 V &amp; R SHEETMETAL LLC 15133 MARTINSON RD SE YELM WA 98597 WALSH MECHANICAL LLC 1716 HARRISON AVE BUTTE MT 59701</Explanation>
      </Form990ScheduleRPartVII>
    </IRS990ScheduleR>
  </ReturnData>
</Return>