About $8 million has been earmarked for two studies which will seek ways to improve the quality of beaches and sewerage systems. The Environmental Protection Department said the 'Beach Pollution Reduction Study', commissioned yesterday for $2.9 million, would address pollution sources and problems of 10 priority beaches. They are Golden, Butterfly and Old Cafeteria beaches in Tuen Mun, Shek O Beach, St Stephen's and Stanley Main Beach on Hong Kong Island, Silvermine and Cheung Sha Lower beaches on Lantau Island, Lido Beach in Tsuen Wan and Silverstrand Beach in Sai Kung. A $5.18 million study was commissioned recently to investigate the problem of storm-water infiltration in sewerage systems. Twenty-two beaches were ranked 'good' by the Environmental Protection Department yesterday according to the amount of E. coli in the water. Twelve were ranked fair and three poor. Good: South Bay, Repulse Bay, Chung Hom Kok, Middle Bay, Deep Water Bay, St Stephen's, Shek O, Turtle Cove, Hairpin, Stanley Main, Hung Shing Yeh, Lo So Shing, Kwun Yam Wan, Pui O, Tong Fuk, Cheung Sha Upper, Cheung Sha Lower, Kiu Tsui, Hap Mun Bay, Trio (Hebe Haven), Clear Water Bay 1st and Clear Water Bay 2nd. Fair: Big Wave Bay, Silvermine Bay, Tung Wan at Cheung Chau, Discovery Bay, Butterfly, Golden Beach, Old Cafeteria, New Cafeteria, Kadoorie, Silverstrand, Hoi Mei Wan, Tung Wan at Ma Wan. Poor: Lido, Casam and Gemini.