Pusarpedal-KLH monitored Lead (Pb) concentration in Serpong area from 2001 - 2004. The result was around 0.5-6 Ilg/m3 and average was 2.51Ilg/m3exceeded national ambient air quality standard (PP 41/1999), for 24 hour that is 21lg/m3 and also for annual that is 1Ilg/m3. The present condition of the high concentration of Pb in Serpong area was verified by the conducted measurement at 10 sampling points at around Puspiptek area, Kec. Serpong, Kec. Pagedangan, Kec. Pamulang and Kec. Gunung Sindur on January to February 2006. The result obtained was exceeded national ambient air standard at SD Setu Muncul (Pb concentration: 6.03 pg/m3), Batan Indah (Pb concentration: 3.79 pg/m3) and BSD Griya Loka (Pb concentration: 2.1 pg/m3). The Pb concentration in elementary school children blood was also monitored in Serpong and its surroundings. As result, Pb concentration in elementary school children blood Serpong elementary school children blood was ranged from 7-12 Ilg/ dl, with average concentration; SDN Setu 01 = 12.0 Ilg/ dl, SDN Puspiptek = 9.5 Ilg/ dl), SDN Kademangan = 7.1 Ilg/ dl, and SDN Batan = 7.5 Ilg/ dl. The Pb concentration in elementary school children blood in
Jakarta area was ranged from 2.1 - 6.1 Ilg/ dl. Standard specified by Center for Disease Control and Prevention (CDCP)-USA is: 10 Ilg/ dl. The evaluations of meteorological data and emission source have been conducted, in order to understand the air pollution situation in Serpong area. Frequency distribution of wind speed and wind direction was calculated and conclude that 50-60% was calm condition, and the emission sources at Serpong and its surroundings in radius 30 s/ d 40 km. Key word: Pb, CDCP, ambient air quality standard, emission, meteorology, frequency distribution. Halimah Syafrul, Esro11lHamonangan, Retno Fuji Lestari, Emalya Rachmawati dan Ua Mulyaningsih Pusat Sarana Pengendalian Dampak Lingkungan-Kementrian Negara Lingkungan Hidup