BPMN modeler

I am seeking a BPMN modeler to construct process models using BPMN 2.0 notation. The models are not for IT implementation purposes. The work requires: Reading a document outlining the business logic that requires modelling (approximately 100 pages in English). Constructing hierarchical process maps that illustrated the business logic contained in the above document. This would include: Constructing a single ''level 1'' BPMN 2.0 diagram (high level process map) and Multiple "level 2" BPMN 2.0 diagrams illustrating the lower levels of details. Ideally you would an understanding of Bruce Silver's ""Method and Style"" approach to documenting the level 1 and level 2 diagrams. I would estimate a total of 24 hours of work is needed to complete this work.