service contract for environmental control and hygiene at acem , nasik service contract for environmental control and hygiene at acem , nasik ( as per specification service contract for environmental control and hygiene at acem , nasik , supervisor , cleaning staff , ( a ) total monthly wages per month for all category ( rs ) , ( b ) total annual cost of wages ( rs ) = ( a ) *12 , ( c ) material ( as per appendix b of spec . ) cost for 12 months , ( d ) service charge - profit margin also include expenditure against salay of co-ordinator , all administrative expenses and transportation of manpower to acem note: quoted service charge/profit should not be less than 5% of total yearly wages . service charge/ profit , once quoted , will be fixed for the whole contract period . , ( d ) total annual cost = ( b ) + ( c ) , ( e ) gst @ 18% on ( d )