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<br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br />survey. As a result, storage volume totaling 22,679 acre-feet to the <br />spillway crest was detennined in 1965. <br /> <br />In 1970, field inspectors noted that additional debris had fallen <br />I nto the spillway chute and sections of the spillway were showl ng <br />signs of di stress. By 1974, the spi 11 way chute and spillway concrete <br />were beginning to spall and erode. <br /> <br />By 1976, most of the deposited material in the spillway had been <br /> <br /> <br />removed and it was determined that the remaining rock would likely <br /> <br /> <br />wash out during major spills. <br /> <br />In 1981 and 1982 the reservoir was drained to repair the gate <br />valve seals. The cost of repairs on Continental and Santa Maria dams <br />since 1980 has been over $330,000. <br /> <br />In 1984 seepage of 15 gallons per minute (gpml was observed <br />exiting an area 40 feet wide near the left abutment contact approxi- <br />mately two-thirds of the way down from the dam crest. A smaller seep <br />of about 1 gpm was noted near the right edge of the outlet headwall. <br />Each seep was clear and no sediment was observed. <br /> <br />During 1986 two separate areas of seepage were noted. The first <br />was located 82 feet from the spillway and 47 feet downslope from the <br />crest on the downstream face. The point source flow was estimated to <br />be 2 gpm, and appears to be located dl rectly upslope of the outl et <br />retaining wall. The second leak was much larger, estimated to be 10 <br /> <br />1-5 <br /> <br />- <br />