Petroleum production projects on road on land L53-G production base-hole exploration onshore L53/No. 48 kamphaeng Saen district. Nakhon Pathom province, has installed a culvert along the road at the entrance of the base area, the project area because the hole is in the same area, L53-G production area of exploration drilling L53-G, which has been agreed, then the installed culvert is the number 1 pipe, which is enough to drain. However, to confirm the adequacy of culvert installation, then how could cater for drainage. The company's consultants calculated the rainfall runoff along the entrance road to the project area, with details as follows:
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