System, method and program for identifying a subset of a multiplicity of source networks. The bracket has an elongated body having a first end and a second end, and attaches to the headlamp housing by temporary attachments, such as snap connections. Exemplary support layers include expanded fluoropolymer materials such as expanded polytetrafluoroethylene. The system also can include a change log service disposed in the pervasive device and coupled to the EDB. The method may further comprise separating the enriched active agent phase from the hydrocarbon material depleted in the acidic constituent under the second condition. The retailers, upon receipt of the RFP submit proposals to the ESA for forwarding to the requesting customer.