Annual Maintenance Of Water Supply Complex At Loco, 1St Entry & Cleaning Of U/G.Oh Tanks & Supply Of Chlorine And Annual Maintenance Of Pipe Line Ranney Well Shashtri Park To Delhi Main Station & Desilting Of Ranney Well & Other Miscellaneous Repair At Ranney Well In The Section Of Sse/W/Dli/Station Under Aden/Dli.