This building is over 300,000 sf and located close to public transportation. Half of the tenants are government agencies. The building manager stated if we send out electronic surveys we will probably not receive more than 20% back. Therefore we opted to set up stations in the lobbies next to both entrances where employees will be asked to fill out commuting surveys. Here are my questions:

1) LEED reference guide, page 27, states surveys should "identify the transportation mode used to travel to the project building between 6am and 10am". I'm a little confused because the new LEED survey calculator mentions "morning and evening" commutes. So which is it??

2) Since a majority of the occupants are government agencies employees often take off Friday or Monday. Therefore, the building management staff plan to conduct these surveys in the middle of the week for two consecutive days in order to document a true random sampling. The survey will ask occupants to fill out information based on the previous Mon-Fri work week, but will not conduct the surveys until the following week. Is this acceptable, as long as we explain this well in the narrative?

3) Lastly, does the survey need to document the mileage driven for "single occupant vehicles". the reason I ask relates to occupants who use multiple transportation modes. For instance, if someone drives to a commuter parking lot then hops a train, how do we document this on the survey? In order to receive credit, would the mileage driven have to be less than the train distance?

Thanks!