Daily: 10 A.M.–5 P.M.
Closed on Tuesdays
1151 Oxford Road
San Marino, CA 91108
Visual Materials
Big Creek, Huntington Lake Dams - Copy of Page 5 of Stone & Webster Report on Backfills on Dams at Huntington Lake: 12. Face of Dam 2 after guniting chipped out cracks east from station 14+00. Note frost protection. 13. Core drilling at west end of Dam 2. 14. Cleaning grout holes east end of Dam 2. Water and air introduced uder pressure through pipe inserted in hole 20 is blowing out of hole 18.
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Visual Materials
Big Creek, Huntington Lake Dams - Copy of Page 12 of Stone & Webster Report on Backfills on Dams at Huntington Lake: 42. Drilling 30' grout holes. 43. Grouting 30'grout holes. Blow pipe in hole in foreground. 44. View of grouting connections. One hole being grouted, another under air pressure after final refusal. 45. Old core drill hole 12 in front of Dam 3A, through which water tests were made. Note broken condition of rock typical in vicinity of this dam. 46. View of upstream face of Dam 3A after backfill has been replaced.
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Visual Materials
Big Creek, Huntington Lake Dams - Copy of Page 6 of Stone & Webster Report on Backfills on Dams at Huntington Lake: 15. Details of Gardner-Denver grouting pump and mixers. 16. Grouting core drill hole at west end of Dam 2. Note method of weighting grout pipe. 17. Dam 2 - Another view looking toward excavation behind old concrete plant foundations. 18. Excavation east of 14+50. Foundations of old concrete plant to right and above excavation.
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Visual Materials
Big Creek, Huntington Lake Dams - Copy of Page 10 of Stone & Webster Report on Backfills on Dams at Huntington Lake: 33. Removing old timbers & chipping out porous concrete in cut off wall. 34. Chipping out bad rock pockets and old timbers near station 0+90. 35. Chipped out area between 1+00 & 1+25. Drilling grout holes at right. 36. Chipped out pocket of loose and leaky rock, station 0+15. 37. View of hole under bottom of cut off wall discovered during excavation. Station 1+55.
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Visual Materials
Core drill hole upstream face Dam 1. U-15. Most easterly hole drilled and highest in elevation of any of the 16 holes drilled in the upstream face. Station 3+60.9 Elev. 6630.5.
photCL SCE 02 - 20105
Visual Materials
4" iron pipe drain from tile weep hole near East end of 11th step. Dam 1. Approx. elev. weeper 6900.
photCL SCE 02 - 20114
