This volume contains the technical paper prepared by DHEW to give additional data and a more detailed analysis of materials used to study the cost implications of the Federal Interagency Day Care Requirements (FIDCR). This study was part of a larger project to investigate two questions: is the Federal regulation of day care financed under Title XX appropriate? Are the specific requirements for day care now imposed under Title XX appropriate? This volume contains six sections, each called a Technical Note (TN). TN 1 analyzes the cost of the FIDCR child-staff ratios; TN 2 provides alternative estimates of costs of FIDCR ratios; TN 3 analyzes the cost of compliance, in centers whose funds in part, or in whole, derive from the Federal government (FFP); TN 4 provides an estimated mean cost per child by type of day care facility; TN 5 analyzes the likelihood for integration/segregation of children, by race and/or socioeconomic status, as a function of a facility's source of funds and as a function of a facility's profit/non-profit status; and TN 6 provides estimates of the number of FFP children in day care centers. A 1-page bibliography, a 17-page glossary of terms, and three appendices are included. (Author/DB)