permits has been approved vs permits have been approved

Some examples from the web:

• I'm pleased to say that your permits have been approved.
• Permit approved by the city was for American standard I-beams.
• Permit approved by the city was for American standard I-beams.
• Your entry permit was approved this morning.
• Your entry permit was approved this morning
• Permits any derogation approved under this process.
• How many single new home building permits were approved in 2012?
• A TPT permit is reviewed and approved by the forestry official.
• Permit holder has an approved applicable environmental impact assessment (EIA) document and has implemented measures identified in it.
• a copy of the storage permit, including the approved monitoring plan, pursuant to Article 9 of Directive 2009/31/EC;
• The permit to fly shall specify the purpose(s) and any conditions and restrictions which have been approved in accordance with point 21A..
• This environmental assessment has never been approved and legal judgments were handed down in 2001 and 2008 annulling the permit and requiring the immediate closure of the mine.
• An appropriately approved production organisation may issue a permit to fly (EASA Form 20b, see Appendix) under the privilege granted under 21A.163(e), when the conditions of 21A.708 have been approved in accordance with 21A.710.
• Notwithstanding paragraphs 2 and 5, for the purposes of replacement parts, Member States shall continue to grant EC type-approval and to permit the sale and entry into service of components or separate technical units intended for use on vehicle types which have been approved before...
• Permit holder has a harvesting plan for the cutting area that has been approved by the competent administrative authorities
• Which factories in the wider region are discharging the waste, have their environmental procedures been approved, and do they have permits to dispose of effluent?
• The refinancing itself has also been approved.
• No projects have therefore been approved yet.
• My Christmas leave has been approved.
• or this Regulation permits its use, clean water - to remove surface contamination from products of animal origin, unless use of the substance has been approved in accordance with the procedure referred to in Article 12(2).

Some examples from the web:

• I'm pleased to say that your permits have been approved.
• Permit approved by the city was for American standard I-beams.
• Permit approved by the city was for American standard I-beams.
• Your entry permit was approved this morning.
• Your entry permit was approved this morning
• Permits any derogation approved under this process.
• How many single new home building permits were approved in 2012?
• A TPT permit is reviewed and approved by the forestry official.
• Permit holder has an approved applicable environmental impact assessment (EIA) document and has implemented measures identified in it.
• a copy of the storage permit, including the approved monitoring plan, pursuant to Article 9 of Directive 2009/31/EC;
• The permit to fly shall specify the purpose(s) and any conditions and restrictions which have been approved in accordance with point 21A..
• This environmental assessment has never been approved and legal judgments were handed down in 2001 and 2008 annulling the permit and requiring the immediate closure of the mine.
• An appropriately approved production organisation may issue a permit to fly (EASA Form 20b, see Appendix) under the privilege granted under 21A.163(e), when the conditions of 21A.708 have been approved in accordance with 21A.710.
• Notwithstanding paragraphs 2 and 5, for the purposes of replacement parts, Member States shall continue to grant EC type-approval and to permit the sale and entry into service of components or separate technical units intended for use on vehicle types which have been approved before...
• Permit holder has a harvesting plan for the cutting area that has been approved by the competent administrative authorities
• Which factories in the wider region are discharging the waste, have their environmental procedures been approved, and do they have permits to dispose of effluent?
• The refinancing itself has also been approved.
• No projects have therefore been approved yet.
• My Christmas leave has been approved.
• or this Regulation permits its use, clean water - to remove surface contamination from products of animal origin, unless use of the substance has been approved in accordance with the procedure referred to in Article 12(2).