ILE OPY STATE OF CALIFORNIA CALIFORNIA NATURAL RESOURCES AGENCY DEPARTMENT OF WATER RESOURCES DIVISION OF SAFETY OF DAMS INSPECTION OF DAM AND RESERVOIR IN CERTIFIED STATUS Name of Dam Gibraltar Dam No. 11-0 County --------------------Type of Dam RCC Buttressed CORA Type of Spillway Gated Chutes Santa Barbara 0.0 feet below spillway crest and _ _ _5_._3___ feet _ _ _ be_l_o_w_ _ dam crest. - WSE 1,400.0' Weather Conditions Sunny and warm Contacts Made Matt Ward and Carson Wollent, et. al (City of Santa Barbara) Water is Reason for Inspection Periodic Maintenance Inspection Important Observations, Recommendations or Actions Taken 1. The owner identified one area in the lower portion of the spillway where the concrete has become damaged (Photo 4 ). The owner has since hired GENTERRA to evaluate the extent of the damage and provide a design for a solution. A repair application (filed in duplicate) along with plans and specifications, and appropriate filing fees will need to be submitted, reviewed, and approved by the Division of Safety of Dams before repair work can begin . 2. Surveyed arch face points show significant deviations in elevation and horizontal movements, which may indicate damage or movement in the benchmark. The owner needs to explain this movement in the next instrumentation report. 3. All future plots in the instrumentation report need to include reservoir elevation. Conclusions From the known information and visual inspection, the dam, reservoir, and the appurtenances are judged safe for continued use. Observations and Comments Dam The crest, parapet wall, and guardrail were level, well aligned, and in satisfactory condition. The visible portion of the upstream face and the downstream face appeared stable with no significant spalling, cracking, or open joints observed. Both abutments appeared to be stable and in satisfactory condition. The upper galleries were inspected The lower gallery was not inspected The woody vegetation and visually obstructing vegetation around the dam, spillway, and downstream toe should be removed periodically to allow for a thorough inspection of the dam. The large tree on the upstream side of the dam that was requested to be removed in the last inspection report has been removed. Spillway The approach, control section, and chute of the spillway were open and clear. The concrete that comprises the spillway remains in generally satisfactory condition. The owner identified one area in the lower portion of the spillway where the concrete has become damaged (Photo 4 ). The owner has since hired GENTERRA to evaluate the extent of the damage and provide a design for a solution. A repair application (filed in duplicate) along with plans and specifications, and appropriate filing fees will need to be submitted, reviewed, and approved by the Division of Safety of Dams before repair work can begin. The gates and gate were fully closed. The gates remain in satisfactory condition with no signs of concerning corrosion or other distress. Inspected by Photos taken? Yes cc for DWR 1261 (Rev. 10/09) X No Owner/Book Date of Inspection Date of Report B. Cruz 5/23/2017 5/23/2017 Sheet _ _ of 4 INSPECTION Name of Dam Gibraltar ·DAM AND RESERVOIR IN CERlh .ED STATUS Dam No. 11-0 --------- Date of lnspection _ _ _ _5_/_23_/_2_0_1_7_ __ Observations and Comments Outlet The outlet consists of an valve and valves. The valve and valve are reportedly buried below silt. The valves were fully cycled during the April 2016 inspection with no difficulties. All of the outlet components are reportedly operated regularly as part of the owner's maintenance program. All visible components of the outlet system appeared to be well-maintained. Seepage The galleries were in good condition. There was a little more flow coming from the right gallery than from the left gallery which is normal for this dam. The seepage was clear and the galleries were consistent with the historic behavior of this dam. quantities observed in both The gallery was not accessible Instr. Instrumentation for this dam consists of 23 survey monuments, 14 crack meters, 10 piezometers, 10 arch face survey points, and a flow meter. A February 18, 1998 letter from DSOD to the dam owner allowed the monitoring of the thermocouples to be discontinued. The most recent submittal of instrumentation data was transmitted on December 15, 2016 and contains data through December 2016. Survey monuments: The 23 crest survey monuments show minimal horizontal and vertical movements during the recording period and are considered normal for the size and type of dam. No adverse trends were noted. Crack meters: All crack meters showed constant reading C-5 located near the center of the arch has been gradually increasing since 1997. The increasing trend fluctuates up to 0.09 inches per year and has a maximum displacement of 0.28 inches. C-7 located near the right abutment had an increasing trend between 1997 and mid-2011 and reached a maximum displacement of approximately 0.21 inches. Since 2011, the trend decreased and has been constant around approximately 0.13 inches of displacement. Crack meter C-9 has failed to give readings since May 2008. Piezometers: The fluctuations in the piezometers were minimal and within historical range and no adverse trends were noted. Arch face survey points: Surveyed arch face points show significant deviations in elevation and horizontal movements which may indicate damage or movement in the benchmark. The owner needs to explain this movement in the next instrumentation report. Seepage: Seepage flow rates range between 2 and 4 gpm during the monitoring period which is consistent with the changes in reservoir elevation and within the historical range. All future plots in the instrumentation report need to include reservoir elevation. Based on the submitted data, the dam is performing satisfactorily. No other instrumentation is judged necessary at this time. DWR 1261 (rev. 10/09) Sheet 2 of 4 INSPECTION t,.~ DAM AND RESERVOIR IN CERT .. ~ED STATUS Date of lnspection _ _ _ _ 5/_2_3_/2_0_1_7____ . DWR 1261 (rev. 10/09) . , Sheet 3 of 4 INSPECTION L.· DAM AND RESERVOIR IN CERl .. ~ED STATUS NameofDam_G_i_br_a_lt_ar_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _~DamNo. _1_1_ -0_ _ _ _ _ _ __ Date of lnspection _ _ _ _5_/2_3_/2_0_1_7_ __ Photo 4- View of the spillway downstream of bay #3. Damaged area circled in red DWR 1261 (rev. 10/09) Sheet 4 of 4 STATE OF CALIFORNIA NATURAL RESOURCES AGENC DEPARTMENT OF WATER RESOURCES DIVISION OF SAFETY OF DAMS ~ALIFORNIA I INSPECTION OF DAM AND RESERVOIR IN CERTIFIED STATUS Name of Dam Gibraltar Type of Dam RCC Buttressed CORA 25.3 Water is below feet 11 Dam No. Santa Barbara County Gated Chutes Type of Spillway spillway crest and 30. 6 feet below dam ere.st. Water Surface Elevation - 1,374.8 Weather Conditions Sunny, cl ear, and warm - 80 ° F ContactS Made Jim Jenkins (by phone prior to the inspection), Carson W ollert and Frank Dealy (during the inspection) all with the City of Sa nta Barbara Reason for Inspection Periodic Maintenance Inspection of a Jurisdictional Dam Important Observations, Recommendations, or Actions Taken • I recommended that the large tree on the upstream side of the dam near the right abutment be removed (See Photo 4); all trees and woody vegetation within 10-feet from the dam or any appurtenant concrete structure should be removed and/or not allowed to become established to prevent damage. • Vegetation control is needed along the downstream toe of the dam, at the spillway discharge (see Photo 7); remove all woody and/or visually-obscuring vegetation that is within 10-feet from the dam to prevent damage and to allow for a thorough inspection of the dam and adjacent area. • I recommended, and discussed with Mr. Wollert during the inspection, that an exercising program . be established for the operation of all the spillway gates to ensure continued dependability of the gates. The Owner should develop and submit a proposed plan to DSOD for concurrence. Exercising of the spillway gates should be witnessed during periodic inspections on a schedule similar to that of the outlet operation requirement. • The annual survey of the dam for Calendar Year 2016 will need to be scheduled such that a survey of the dam arch face can be performed; this was not performed in 2015 . • Arrangements to fully exercise the downstream 72-inch valve during DSOD's next regularly scheduled inspection . Conclusions From the known inform ation and vi sual inspection, the dam, reservoir, and all appurtenances are judged safe for continued use pending restoration of the upstream outlet valve. Observations and Comments Dam Photos taken? Copy for The crest of the dam appeared properly aligned and in good condition. The concrete comprising Yes X R. Fessler Date of Report June 29, 2016 No Owner I File I Field Book DWR 1261 (Rev. 10/09) Inspected by Sheet 1 of ~?!!/'WI(, 7 Name of Dam Gibraltar 11 Dam No. April 21, 2016 Date of Inspection ~~~~~~~~~~ Observations Comments the downstream face of the dam remains in satisfactory condition with no significant spalling or (cont'd) cracking observed. The visible portion of the upstream face was examined from the crest and each abutment and was also found to be in good condition. The abutment contacts and visible portions along the downstream toe appeared normal with no obvious signs of instability. Vegetation control is needed at the right abutment and along the downstream toe. I recommended that the large tree on the upstream side of the dam near the right abutment be removed (See Photo 4); all trees and woody vegetation within 10-feet from the dam or any appurtenant concrete structure should be removed and/or not allowed to become established to prevent damage. All woody and/or visually-obscuring vegetation present along the downstream toe of the dam, at the spillway discharge (see Photo 7); within 10-feet from the dam should be removed to prevent damage and to allow for a thorough inspection of the area. Spillway The concrete comprising the spillway section remains sound and in good condition. approach, control section, and chute were unobstructed. The good structural condition. The gates also remain in There were a few locations on the struts where the protective paint coating is starting to peel. I recommended that the owner inspect all of the gate surfaces and re-paint the areas where the paint is cracked and peeling away to prevent corrosion. Outlet The outlet consists of an valves; valve and valve and valve are reportedly buried below silt. The valves release water into an outlet Water can be discharged into the canyon below the dam through a valve or diverted into the The operable valves were fully and successfully exercised during this inspection. The valve should be fully exercised during DSOD's next regularly scheduled inspection. All of the outlet components are reportedly operated regularly as part of the owner's routine maintenance program and were last independently exercised and maintained in October 2015, six months prior to this inspection. All visible components of the outlet system appeared wellmaintained and in good working order. Seepage There was no significant seepage present on the downstream face or in the downstream abutment contacts. and found that the gallery remains properly aligned and in good condition. There was enough water in the plunge pool The lower gallery also remains well-aligned and in good condition. Total seepage for the dam remains between 2 and 4 gallons per minute. The seepage patterns and quantities observed in both the galleries appeared to correspond with the water level in the reservoir and were consistent with historic behavior. DWR 1261 (rev. 10/09) Sheet 2 of 7 F Name of Dam Gibraltar 11 Dam No. April 21, 2016 Date of Inspection ~~~~~~~~~~ Observations and Comments lnstrum- Instrumentation for Gibraltar Dam consists of 23 survey monuments, 14 crack meters, 10 piezometers, 68 thermocouples, and a seepage monitoring. A February 18, 1998 letter from DSOD to the dam owner allowed the monitoring of the thermocouples to be discontinued. The most recent submittal of instrumentation data was received by DSOD in January of 2016, in a report dated 01 /20/2016. The monitoring period for the data contained in this report was for Calendar Year 2015. Survey Monuments The data included for the recent reporting period represents normal and expected behavior in both the horizontal and vertical directions. Settlement and lateral movements were negligible and no unusual readings were detected. The movements recorded are minor and within historic patterns. The annual survey of the dam for Calendar Year 2016 will need to be scheduled such that a survey of the dam arch face can be performed; this was not performed in 2015 due to access constraints. Crack Monitoring The recorded data for the majority of the crack meters show movement that is generally cyclical and all of which is small in magnitude and considered acceptable. Movement for Crack Meter C5, at the top and center of the dam, appears cyclical as well but appears to be increasing, with a reported movement of %-inch. Although not concerning at this time, movement at C5 will need to be closely monitored. Piezometers The values recorded for all 10 piezometers remain continue to display changes consistent with variations in the reservoir's water level and match historic behavior for the dam, no concerns were noted. Seepage Seepage values during the monitoring period remained consistent with changes in reservoir water surface elevation and historic behavior. The data reviewed indicates that the dam continues to perform in a satisfactory manner. The instrumentation program and monitoring frequency at this dam are currently judged to be adequate; no additional instrumentation is needed at this time. DWR 1261 (rev. 10/09) Sheet 3 of 7 INSPECTIOK Name of Dam Gibraltar F DAM AND RESERVOIR IN CER ------------------------ :1ED STATUS Dam No. 11 ----------- Date of lnspection _ _ _ A_p_ri_I2_1_,_2_0_1_6_ __ Photo 1: View of the downstream face of the dam, from the left abutment Photo 2: View of the downstream face of the dam, from the right abutment DWR 1261 (rev. 10/09) Sheet 4 of 7 INSPECTIOt Name of Dam Gibraltar F DAM AND RESERVOIR IN CER =1ED STATUS 11 Dam No. April 21, 2016 Date of Inspection ~~~~~~~~~~~- Remove all woody and/or visually obscuring vegetation within 10-feet from the dam or any appurtenant concrete structure Photo 7: View of the vegetation control needed at the spillway discharge Photo 8: View of the downstream face of the dam and right abutment, from the toe DWR 1261 (rev. 10/09) Sheet 7 of 7 FILE STATE OF CALIFORNIA l\ LIFORNIA NATURAL RESOURCES AGENCY DEPARTMENT OF WATER RESOURCES DIVISION OF SAFETY OF DAMS INSPECTION OF DAM AND RESERVOIR IN CERTIFIED STATUS Name of Dam Gibraltar RCC Buttressed CORA 19.7 feet below ~~~~~~~~~~~~ Type of Dam Water is 11 Gated chutes spillway crest and 25.0 Dam No. County -~~~~~~~~- Santa Barbara Type of Spillway feet ~~~~~~ below dam crest. ~~~~~~ Moderate Frank Dealy and Carson Wollert with the City of Santa Barbara Reason for Inspection Periodic Maintenance Inspection Weather Conditions Contacts Made ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~- Important Observations, Recommendations or Actions Taken • Valve remains broken and the owner is planning to repair or modify the outlet. Drawings and details of the work should be submitted to DSOD to determine if the proposed work would require an application. · • Updated instrumentation data has been submitted and reviewed. Conclusions From the known information and visual inspection, the dam, reservoir, and the appurtenances are judged safe for continued use pending restoration of the upstream valve. Observations and Comments Dam The crest, parapet wall, and guardrail were well aligned, level, and in good condition. The upstream and downstream faces of the dam were stable, uniform, and in satisfactory condition with no signs of instability. The abutments were in stable condition. The galleries were inspected and remain in good condition with adequate lighting, good ventilation, and relatively clean. There is only about three feet of water in the reservoir. It was reported that there is about 115 feet of silt accumulated in the reservoir basin. Spillway The approach, control section, and exit chute of the spillway were open and clear. The concrete that comprises the spillway remains in satisfactory condition. The steel spillway gates remain in good condition with no signs of concerning corrosion or other distress. Outlet Due to the large accumulation of silt in the reservoir, the Valve is still broken in the open position and there valves are buried. It was reported that are plans to have it repaired. The remaining operational Valves were last fully cycled in October 2014. The valves were fully cycled during the June 12, 2013 inspection. Seepage The galleries were in good condition with slightly a little more seepage coming from the right gallery than from the left gallery, which is normal for this dam. The right gallery had a slow trickle was not inspected and the left gallery had a slow drip. The gallery Instr. Instrumentation for this dam consists of 23 survey monuments, 14 crack meters, 10 piezometers, 68 thermocouples, and a flow meter. The latest instrumentation submittal was dated January 29, 2015 and contains data up through December 31, 2014. Thermocouple data was not included in this submittal. Photos taken? Yes cc for DWR 1261 (Rev. 10/09) No Owner/Book X Inspected by Joe BoyO Date of Inspection 02/03/2015 0212512015 Date of Report 31?1 tp15 0 _,,-/ ,:J STATUS AND RESERVOIR IN Date of Inspection 02/03/2015 ~~~~~~~~~~ Observations and Comments Vertical movements were small with the largest vertical movement of 0.07' was detected from Monument 3. The arch deflection lines have shown large cyclical swings up to 0.17' in movement at arch deflection Line A. The owner plans to monitor the arch deflection lines closely and look for any trends in deflection. The crack meters showed constant cyclical readings except for C-5 which continues to show an irregular increasing trend. The owner is continuing to closely monitor C-5. It should be noted that C-7 used to show an increasing trend, but has held at a constant level at gauge reading 0.0123" since September 2011. Crack meter C-8 has shown unusual movements in the past but has shown consistent readings over the last decade. Crack meter C-9 has failed to give readings since May 2008. The piezometers have shown constant levels over the last decade. Seepage flows ranged from 1.8 to 5.25 gpm during the monitoring period. There were no unusual trends or conditions noted for the survey movements, piezometer data, or seepage flows. The instrumentation for this dam is judged adequate at this time. DWR 1261 (rev. 10/09) Sheet 2 of 2 FILE STATE OF CALIFORNIA CALIFORNIA NATURAL RESOURCES AGENCY DEPARTMENT OF WATER RESOURCES DIVISION OF SAFETY OF DAMS INSPECTION OF DAM AND RESERVOIR IN CERTIFIED STATUS Name of Dam _G_ib_ra_l_ta_r_ _ _ _ _ _ _ _ Dam No. ____1_1_ _ _ _ _ County Santa Barbara Type of Dam RCC Buttressed CORA Type of Spillway Gated chutes Water is 17. 7 feet below spillway crest and 23. 0 feet - -below dam crest. ------Weather Conditions_M_o_de_r_a_te_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ __ contacts Made Frank Dealy, Carson Wollert, Matt Ward, and Lalo Castillo with the City of Santa Barbara Reason for Inspection Periodic Maintenance Inspection Important Observations, Recommendations or Actions Taken Valve remain s broken and the owner is planning to repair or modify the outlet. I requested drawings and details of the work be submitted to DSOD to determine if the proposed work would require an application. Conclusions From the known information and visual inspection, the dam, reservoir, and the appurtenances are judged safe for continued use pending restoration of the upstream valve. Observations and Comments The crest, parapet wall, and guardrail were well aligned, level, and in good condition. The upstream and downstream faces of the dam were stable, uniform, and in good condition with no signs of instability. The abutments were in stable condition. The galleries were inspected and remain in good condition with adequate lighting, good ventilation, and relatively clean. There was a big storm over the weekend that raised the reservoir approximately 14 feet from the heavy rainfall. Spillway The approach, control section, and exit chute of the spillway were open and clear. The concrete that comprises the spillway remains in satisfactory condition. All the gates were closed and reported to remain in good operating condition. The steel spillway gates remain in good condition with no signs of concerning corrosion or other distress. Due to the large accumulation of silt in the reservoir, the valves are buried. It was reported that Valve is still broken in the open position and there Valves were last fully cycled are plans to have it repaired. The remaining operational on February 23, 2014. The valves were fully cycled during the last inspection on June 12, 2013. Seepage The galleries were in good condition with a little more flow coming from the right gallery than from the left gallery, which is normal for this dam. The total seepage was measured with a bucket at 5.5 gpm read at the exit of the r gallery. The foundation drains were slightly weeping and all the drains appeared unobstructed. All seepage flows appeared clear and normal. Instrumentation for this dam consists of 23 survey monuments, 14 crack meters, 10 piezometers, 68 thermocouples, and a flow meter. The latest instrumentation submittal was submitted on May 2, 2013 and contains data up through December 2012 and previously reviewed in the June 12, 2013 inspection report. Thermocouple data was not included with the latest submittal. ~ 0.-;:\\u.. 4 · ;\t61 \ Photos taken? cc for Yes DWR 1261 (Rev. 10/09) No X Owner/Book Inspected by Date of Inspection Date of Report Joe Bo ce 03/07/2014 03/12/2014 Sheet _1_ of .JaJ-,f' 1 2 INSPECTION STATUS DAM AND RESERVOIR IN Date of Inspection 03/07/2014 ~~~~~~~~~~ Observations and Comments There were no unusual trends or conditions noted for survey movements, piezometer data, or seepage flows. However, the crack meters showed constant readings except for C-5 and C-7 that continue to show an irregular increasing trend. The owner is investigating these two crack meters in order to determine whether they will need to repair or replace them. Crack meters C-8 and C-9 have shown unusual movements in the past but have shown consistent readings over the last few years. Crack meter C-9 has failed to give readings since May 2008. The instrumentation for this dam is judged adequate at this time. DWR 1261 (rev. 10/09) Sheet 2 of 2 FILE STATE OF CALIFORNIA CALIFORNIA NATURAL RESOURCES AGENCY DEPARTM ENT OF WATER RESOURCES DIVISION OF SAFETY OF DAMS INSPECTION OF DAM AND RESERVOIR IN CERTIFIED STATUS Name of Dam Gibraltar Dam No. 11 County - - - -- - - - - - - ---------Type of Dam RC C Buttressed CORA Type of Spillway Gated chutes Water is 28.1 below feet Santa Barbara spillway crest and _3_3_._4_ _ _ _ feet _ _b_e _l_ow ___ dam crest. Weather Condition s Moderate ----------------------------------Contacts Made Frank Dealy, Jim Jenkins, Carson Wollert, and Lalo Castill o with the City of Santa Barbara Reason for Inspection Peri odic Maintenance Inspection Important Observations, Recommendations or Actions Taken Outlet Valves were operated during the inspection. The gate stem for Valve was broken and is sched uled to be repaired. Conclusions From the known inform ation and visual inspection, the dam, reservoir, and the appurtenances are judged safe for continued use pending restoration of the upstream gate. Observations and Comments Dam The crest, parapet wall, and guardrail were well aligned, level, and in good condition. The upstream and downstre~m faces of the dam were stable, uniform, and in good condition with no signs of instability. The galleries were inspected and remain clean with adequate lighting, good ventilation, and were in good condition. Spillway The approach, control section, and exit chute of the spillway were clear of debris. The concrete that comprises the spillway remains in good condition. All the gates were closed and reported to remain in good operating condition. The steel spillway gates remain in good condition with no sign s of concerning corrosion or other distress. Outlet Due to the large accumulation of silt in the reservoir, the valves are buried. It was reported that r Valve was broken in the open position and is scheduled to be repaired in the near future. The remaining operational Valves were fully cycled during this inspection with no difficulties encountered. Seepage Seepage was significantly less due to the low reservoir level. The galleries were wet with no live flows. The total seepage was approximately 2.5 gpm read at the toe weir in the lower gallery. The foundation drains were slightly weeping and all the drains appeared unobstructed. All seepage flows were clear and normal. Instr. Instrum entation for this dam consists of 23 survey monuments, 14 crack meters, 10 piezometers, 68 thermocouples, and a flow meter. The latest instrumentation submittal was submitted on May 2, 2013 and contains data up through December 2012. Thermocouple data was not included with the latest submitta l. The point elevations show small movements, all within historical records. The survey monuments show cyclical movements through Survey Line A that include points 1, 2, 3, and 5. Over the past 10 years there has been a downstream deflection of approximately 0.04 feet. The remaining points also appear to fluctuate but remain within historical limits. The largest movements in the v · I Photos taken? Yes cc for DWR 1261 (Rev. 10/09) X No Files ------~---"lo;;;:=:"~.-----;--- /~) Inspected by Date of Inspection _ _ _ __ _ _ _ _ _ __ Date of Report Sheet 1 -- of INSPECTION ur DAM AND RESERVOIR IN CERT. . 1ED STATUS NameofDam_G~ib_r_al_ta_r~~~~~~~~~~~~~~~~~~~-DamNo. ~11~~~~~~~~~ Date of Inspection 6/12/2013 ~~~~~~~~~~ Observations and Comments direction during the monitoring period were cyclical movements that were less than 0.03 feet between subsequent readings. The spillway separation data reported small movements with no unusual trends or conditions. All crack meters showed constant readings except for C-5 and C-7 that continue to show an irregular increasing trend. The owner is investigating these two crack meters in order to determine whether they will need to repair or replace them. Crack meters C-8 and C-9 have shown unusual movements in the past but have shown consistent readings over the last few years. Crack meter C-9 has failed to give readings since May 2008. Piezometer P5-B did not output any readings from May 2006 through November 2010. Since then readings have returned. The data for the 10 vibrating wire piezometers were all at constant levels regardless of reservoir level or precipitation through the monitoring period. The piezometer data continues to show no adverse trends or conditions. Seepage readings were normal with typical flows under 10 gpm. Spikes in the seepage data were reported to be from debris blocking the weir gauge. The instrumentation for this dam is judged adequate at this time and no new instrumentation is needed at this time. DWR 1261 (rev. 10/09) Sheet 2 of 4 INSPECTION 0..-- DAM AND RESERVOIR IN CERTt~ .ED STATUS NameofDam_G ~ib_ra_l_ta_r~~~~~~~~~~~~~~~~~~~DamNo. _1_1~~~~~~~~­ Date of Inspection 6/12/2013 ~~~~~~~~~- The horizontal joint at the right abutment thrust block was dry due to the reservoir being below this elevation. The total seepage at the lower gallery was about 2.5 gpm. DWR 1261 (rev. 10/09) Sheet 4 of 4