bids are invited for custom bid for services - gpr survey rate per 5000 sqm,custom bid for services - mob and demob char, 1 gpr survey rate per 5000 sqm: the agency to consider gpr survey for 5000 square metres area as one quantity (each) one quantity (each) refers to gpr survey for 5000 square metres area in cdu-ii/ cdu-iii/ fccu-i/ fccu-ii/ other units or assigned area at hpclvr or outside hpcl vr. in case, the gpr surveyed area is higher or lower than 5000 sq.m, a pro rata (proportional) increase or decrease in payment would be effected respectively. this rate is exclusive of travel, boarding & lodging 2 mobilization & demobilization charges per each mobilization and demobilization (including travel, lodging & boarding). note: the mode of travel shall be by train. agency to quote single mobilization & demobilization charges per visit to hpcl visakh refinery (vr), which includes to & fro travel, lodging & boarding charges etc. this rate includes 2 days visit at hpcl-vr. for visit 2 days beyond, this line item shall be paid at prorata basis total quantity :