I'm performing some reviews for CDBG stuff. Using HEROS like I should. My question is specifically about Contaminated Sites. I'm not really worried about any of the project sites being contaminated but as the Responsible Entity I still have to perform due diligence. Every project involves rehab of existing developed public housing or group homes. What do you use to justify your finding that no further analysis is necessary? There is a ton of stuff out there and I don't want to get into the weeds if I don't have to. Thanks for any suggestions.