Question: how many kilometers of sewer lines are in the city adjacent to the county where William Selden was born?

<P0-S0> The wastewater treatment plant and distribution system of water mains, pumping stations and storage facilities provide water to approximately 62,000 customers in the city. <P0-S1> There is also a wastewater treatment plant located on the south bank of the James River. <P0-S2> This plant can treat up to 70 million gallons of water per day of sanitary sewage and stormwater before returning it to the river. <P0-S3> The wastewater utility also operates and maintains 1,500 miles (2,400 km) of sanitary sewer and pumping stations, 38 miles (61 km) of intercepting sewer lines, and the Shockoe Retention Basin, a 44-million-gallon stormwater reservoir used during heavy rains. <SEP> <P1-S0> Richmond Raceway is in the central portion of Henrico County near Mechanicsville, just north of the Richmond city limits. <P1-S1> The raceway seats approximately 60,000 people and holds two NASCAR doubleheader race weekends per year. <P1-S2> Additionally, Richmond International Airport is located in the eastern portion of Henrico County in Sandston. <P1-S3> Top private employers in the county include Capital One, Bon Secours Richmond Health System, and Anthem. <SEP> <P2-S0> the sovereign territory of israel (according to the demarcation lines of the 1949 armistice agreements and excluding all territories captured by israel during the 1967 six-day war) is approximately 20,770 square kilometers (8,019 sq mi) in area, of which two percent is water. <P2-S1> however israel is so narrow that the exclusive economic zone in the mediterranean is double the land area of the country. <P2-S2> the total area under israeli law, including east jerusalem and the golan heights, is 22,072 square kilometers (8,522 sq mi), and the total area under israeli control, including the military-controlled and partially palestinian-governed territory of the west bank, is 27,799 square kilometers (10,733 sq mi). <P2-S3> despite its small size, israel is home to a variety of geographic features, from the negev desert in the south to the inland fertile jezreel valley, mountain ranges of the galilee, carmel and toward the golan in the north. <P2-S4> the israeli coastal plain on the shores of the mediterranean is home to 57 percent of the nation's population. <P2-S5> east of the central highlands lies the jordan rift valley, which forms a small part of the 6,500-kilometer (4,039 mi) great rift valley. <SEP> <P3-S0> prince william, duke of cambridge, (william arthur philip louis; born 21 june 1982) is a member of the british royal family. <P3-S1> he is the elder son of charles, prince of wales, and diana, princess of wales. <P3-S2> since birth, he has been second in the line to succeed his grandmother elizabeth ii, who is queen of the united kingdom and 15 other commonwealth realms. <SEP> <P4-S0> According to the Library of Virginia "William Selden was born 31 January 1791 in Henrico County, Virginia, to Miles Selden (1752-1811) and Elizabeth Armistead Selden (1752-1833). <P4-S1> He was a member for Henrico County in the House of Delegates from 1813 to 1816 and from 1818 to 1821. <P4-S2> He later served as Registrar of the Land Office. <P4-S3> He married first Maria Eliza Swann (d. 1834) 26 November 1833, and they had one child. <P4-S4> He married second Emily Hunter 9 June 1840, and they had eight children. <P4-S5> Selden died 7 April 1874."