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~'j7C 32 METROPOLITAN WATER DISTRICT Work was completed on an automatic shutoff mechanism at thc outlet of Hollywood tunnel. This device is designed to shut off the flow into the Santa Monicll feeder in case of a break in the cast-iron pipe below the tunnel. The installation was started during the pre- vious fiscal year, but had been delayed due to the 1I0ndelivery of essential parts_ A comprehensive inspection of all distribution system meters was carried out. Major repairs were found necessary to the meters at Spadra and at the Bristol Street connection in Santa Ana. Neces- sary adjustments to frequency sensitive apparatus were made in areas where the Southern California Edison Company changed the power frequency from 50 to 60 cycles. Changes were necessary at the south end of the Palos Verdes feeder. on the Orange County feeder alld at Morris reservoir_ The pedestal for the Glendale meter at Glenoaks Boulevard and Glendale A venue was moved a few feet by a private contractor, for and at the expense of the Richfield Oil Company, in order to improve access to a gasoline service station. A compound meter was installed at the Union Oil outlet in Fuller- ton, replacing the original installation_ The two float wells in the Eagle Rock structure were replaced with a heavier installation. A transite house was built over the E!xposed meter structure Routh of the Eagle Rock tower 011 the Palos Verdes line. A sump pump and air vents were fabricated and installed in the meter vault at Lake Mathews. Vents and ladders were fabricated and installed in the meter structures previously installed at Torrance and Anaheim_ The pump supplying water for domestic use and fire protection at Lake Mathews failed on July 17. 1947, due to worn-out shafting and was repaired and put back into working order by District employees_ During April, May and .June 1948, the shores of Lake Mathews were cleaned to elevation 1360 feet to provide for a live storage of 102.000 acre feet. It was also necessary to grade new, higher patrol roads on both sides of the lake_ . A leak of approximately 15 gallons per minute was discovered on February 13. 1948 on the Orange County feeder just below the Corona Del Mar reservoir. The leak was due to faulty collar grout- ing on the upper half of the collar. Repairs were made by cleaning out the collar and dry packing with cement. A small leak on the upper feeder near Fontana was repaired by grouting the joint. Repair was made during lViarch i948 to a ieak in the 21-inch con- crete by-pass line north of the outlet tower at Corona Del Mar reservoir by calking and pouring a reinforced concrete collar around the pi pe.