R-3 — One-Family Residential District
The Article 20 schedule lists a 8,400 square foot minimum lot area and 70 foot minimum lot width for R-3. Section 2007 separately says a lot not served by public water supply and public sanitary sewer must meet a city-engineer-set minimum, but never less than 20,000 square feet and 100 foot width (40,000 square feet and 200 foot width in RP).