bounds_string

"40.71399899774998,-73.96226638749108|40.71444900225002,-73.9606376125089"

coords = [40.714224,-73.961452]
lng_corr = 0.05 / (Math.cos(coords[1] * Math.PI / 180) * 111.11) / 2
lat_corr = 0.05 / 111.11 / 2
bounds = [[coords[0] - lat_corr,coords[1] - lng_corr],[coords[0] + lat_corr, coords[1] + lng_corr]]
bounds_string = bounds[0].join(',') + '|' + bounds[1].join(',');