Em EELTEERETE 3% EE WATER QFS . .FETY OF BATTLES EEF STATE TATE EFT TEE-ETTFTE-EZT ETATUE Name-ET Dam REBATE . ME. . C0EETE Tm. G?lee- SEETEE I .TEET LEE-ET ELL-T 33.12: TEET .EETE ETEET EES F. and E332: FEE T2 MET TE-s. pacts En TED ET Tor TEE EE TEE ETET ?sf-ET TEE T. TEE EELTETEE LEQELEET mEy 8' TEE TATE yEEr. A TEmpErEry TEE-E TEETET TEL-T TEE. ET TEE TE TETE TEE TEE-airs EE FETTEETEE TEE repairs: TE ET TEE TE. From The: KEEWE LETEHEETTEE End TEE. and ES EIEELETE EETE: TEE EELT CEETETEETE inspected. TEE EEWEETTEETE ETETETE- ET TEE. TEE dam TE. End EE signs 0T ET ETEET WEE ETTETIEET TEE-ET and TE TEETEQ En The and To be ETEETE and LTETTETET WEE EXEETTEET, TEETE WETE EE ETQEE ET @33ij TEE- weir. EE-ETE, and End: TE TEE: in ELL panels TEETETE and. are ABET-TE EE EpiTTw-Eiy ETEE WEE-E EE ETQE ET and EETE-E ETETE ETEET. EE TEE WETIE and WETEE TEE TEE TTEETT TEES E-ETTEET This appears TE EE ?m A TEETL: in. The waif ET TEE. WEE ET The bank. ET TEE TEE MT. GEE-E that The TEak WEE ELLE TE die! of The WETT Elem. ETEET with ETTE ET TEE during. TEE mating. W?i?k. FTEELTEET TE TEE TEE wark may. ET TEE The TE WEEKS. A WETET ETEE TEES TEETETTEE TEE of TEE TE TimBETTE ET 9525-52035 I E. Date .03" Report .. ?191201? sv'x. r51: DWR TEE-T :?Of INSPECTION OF DAM AND RESERVOIR IN STATUS - Name of Darn Roilins Darn No. 61-21 Date of Inspection 9/26/2016 Observations and Comments Seepage Instr. leakage into the tunnei until repairs could be made. Following this inspection, I confirmed that . repairs to the exterior wall of the penstock were completed in early October. valve was last fully cycled in presence on 12/30/2014. During the same inspection, the valve was cycled to where it stuck. In May 2015, NID removed the old grease which had accumulated and hardened on the barrel of valve and opened it to 88%, NID has begun design of a replacement? valve for the outlet control, as the old _valve still cannot be fully operated. Design and fabrication together may take 6?8 months, but Mr. Chen expects the new valve will be installed November 2017, during the next planned powerhouse outage. As this is an in?kind replacement, no application will be required. NID needs to notify DSOD in advance of when the valve replacement will take place. The face, groins, and toe of the dam were dry, as usuai. The weir longer monitored, as it is deemed unrepresentative of dam seepage conditions due to contributions from other sources. Instrumentation at this dam consists of 7 crest monuments, 26 spillway monuments, and one observation well. The latest instrumentation report was submitted with an owner?s letter dated April 7, 2016, and includes data for calendar year 2015. Crest Monuments: The 7 monuments along the crest are surveyed every two years for both horizontal and vertical control. The most recent survey was completed in 2015. The maximum recorded horizontal and vertical displacements between the 2013 and 2015 surveys are? an_ respectively. Maximum cumulative horizontai and vertical displacements since surveys began in 1965 are_ an_ respectively. These movements are considered normal for a Iarge earth and rockfill dam over a period of 50+ years. Spil/way Monuments: In our 7/26/2013 letter, we notified NID that we have no objections to discontinuing monitoring of the spillway wall monuments at this time. Observation Well: The observation well is located on the edge of the crest at the maximum section of the dams. The well is of the core, and readings normally fluctuate with reservoir elevation. In 2015, readings fluctuated between 1977 and 1984 feet, which is within the normal range. No adverse trends were observed, and readings continue to indicate a low and stable phreatic surface within the embankment. The current instrumentation network is judged to be adequate, and no additionai instrumentation is deemed necessary at this time. Sheet 2 of 5 @wm?m ?g?w ma ?mm?mlmw mcm?m . .. . .. .Um?zo, 2-2 . saw. 9. ?mwm?am m?mxy?/H/ . z??yxg?wy a. J: ..5 I x. ..rWr noma?a. Saw. a 33 .1. m. $.an mwmgim?mn ?.83 may?. mw?gmsa m?m .939. $3 w. .3 mmy? ?aw ?mwm??g? my ?mm?fmw w??ym?m Emumnma: . Qmm?mm Mum?up3.. 11111111111- 1&1: *mmawxs: 11111111111111 11211131311111: 13:11 11:11:? $11111: $111 11513111111115111 11111111111111 111313-111c111 .11 31211311 CAN A1113 M3 CERHEE :13 A7133 Name. 1111111111 11111111111 Dam 11.11. 61:21 1351111111 11111111111 T3111: 11:31:11: 1111-1111:: Rack Type 11181111111113: {3:111:111111?1: 21173113111111.1111? {3:311:1- 3111:1191: 11:11.11. 931938111 311:4 "fee? 1313113311! (111111 1:11:51, 111111111111: {3.511111113111151 C'iear :11111? 111:1: 11111311111111 F. 13111111111: 1111:1111; 1331131? 31111111111121 1111111: {31111111 11:! 1111111311: 3111:1131. 1311' {3111111521. Annuai mam?nance 11111331211011. .111 11111511111: ?11111111171 11111133) 213.015., N112: rammed 11:: 0111111171311: 1111151111: 11:11.1 11313111111311.111151111111 11311211311111 11.11 11.11: 11:11:11 1.1121111: 1.111.111:- 1313111111111 11 111-88111: 1131:1111-1-1111111111 1?11: canti'n-uecs? use. 1311111111111111: 1111;: 13111111111111: . . . . 13.11;: 1?11 11111111111 1-11 down-11111111 1111' 11111:: 1111111161 11:11-11:11: 11.111111: 11111111191111: 111:3. T11: 11.11111 11.11111 11:: 12:10.11 1:11:11c1111'1111, 11111.1 1111111111311 111.: 1111:1111: 111'- 1.111111111121131 ordisireaa. The 11151111111151 5:11:1-113111, 1111111111165 1'11 11311311111111.1151 condition. The 111:}: lining 11.111 12111111111113.1111 anti dawnsimam @1391; 31113111111115; b: 5131:1113, uniform and 111 satisfaamry Veg?ta?en (11311111121: 111311 11111111111111: 31161111111121- 11113.11: 01?1'11111111?: 31:11:11111. The 3:111:11}: 13121111131111.1311-1111. 1.391.111 11111111. 8111:1113 1121111113, ami- 31111111111111.11 11111111 1111:: 1:110:1311111111111. 11111131111113: 11:1 be: 111 9111:1113 1.3112111111113211, 1111.111 11:: signifi?ant :r'aaking :11" spa?ing, 81111111131: 1:111:11:- 11911111111 11.111111111311311, 1111:: 1:111:11: seaiani: :11: 1111151311113 11111-111511. The 1.111315111111131 31111111121113 shcwad 1711.1 Sign; 1111? and weep 1101113111191": 1:113:13 51111.:111111111 1111 11:1". 11111111.: date 1111:11111111211'1111: 1111111 13111111111111.1313: with ?1 1111111111 damp-119.511.1111 the. {39111113 and 1111111: 11111631111111111:1? ianciing- water 1111:1113 1118111111211. The 111.13.: mating is beginning t-o ?1.:1111111111, and the; {311111211131 12-11311?: 1:1: have: 1111111111111." 111 111111 111111;: fewyears. 'vaNe-s: are ?zyded 1311111111113; by NED :1th spring: The, 11111: 1111;111:1113; 13111111113 1-1.1 1211:1111-1111:11911 1213121213111. 13111111911111 11111111.- insmc?tim. 111.11: 1111111: was 111111111111 111511,- 31111131121315, Nit: 1.431111111111111 the amu-muiatad 311:1 harderngii- 1:11 the 2131111113 :11- vahxa and 11138111113 11 11:1 88%, {1111;131:1119} 1:131 A. P??iw 111111111? ?(931? N3 13113112 :11" Emma?m: {13'1? 1:111:11 01.111111113111131: 1:11:1- 9: 1111111111 1' 1123120115: 1311111111 131111-11 1126.1 5111-111. 1011121) 131113121- ?3 of 3F DAM AND RESERVOIR IN GEE: FIED STATUS Name ofDam Rollins Darn No. 61-21 Date of Inspection 9/30/2015 Observations and Comments Seepage The face, groins, and toe of the dam were dry, as usual. The weir longer monitored, as it is deemed unrepresentative of darn seepage conditions due to contributions from other sources. Instrumentation at this dam consists of 7 crest monuments, 26 spiilway monuments, and one observation well. The latest instrumentation report was submitted with an owner?s letter dated Aprii 2, 2015, and includes data for calendar year 2014. Crest Monuments: The 7 monuments along the crest are surveyed every two years for both horizontal and vertical control. The most recent survey was completed in 2013, and was reviewed in the previous inspection report. The next monument survey is due in 2015. Spillway Monuments: In our 7/26/2013 letter, we notified that we have no objections to discontinuing monitoring of the spillway wall monuments at this time. Observation Well: The observation well is located on the edge of the crest at the maximum section of the dams. The well is of the core, and readings normally fluctuate with reservoir elevation. In 2014, readings fluctuated between 1980 and 1985 feet, which is within the normal range. No adverse trends were observed, and readings continue to indicate a low and stable phreatic surface within the embankment. The current instrumentation network is judged to be adequate, and no additional instrumentation is deemed necessary at this time. DWR1261(rev.10109) Sheet 2 of 5 mzm?mm?g?m ma?a m2 ?mm. ?mm ?0.13 m?awm . . @113 2a. . .. .6me .. . . ,1 1. Lu: .07/4/11..1. z. .. 1 1,11, 1/ 1 fm .. ?Man/.15.; .1, . 1% 11/1117camgm? $3 ?am31..mm?ma $03 magma mvvwommx. 1mm?. $1.383 m. ow. . 3:535 Date of in?spac?icm, 15' DWR @251 (my. 10mg; Shea: 4 ?91? ?31. xii} 2 STATE {333 GALE GNLEFUNNEN NNELENNL New? WATLN LEN QF {31* ?333 QNN ANN NEENENWNN EN if .N- gr Nam-N Nam Dam NE). 633%"! E-gs Tygae NE. {Eam- ENNEE {3%er NEE Ers- If. feet NNENEN area? and: feet; Nam-N ?dam {Paid 35 . . f" um ENCEN Made ?ier: NEE EN EZEENENNE. ENENNEENNE NE TENN was ENENETEEN N3 V8 ENN NENE EN NNLENN ENE .ndi?-?g 33nd ENN N-NENN EN EN 23?? 33'. ENN N'Ngzi dam, 33st NEE judgNN NNEEN ENE-3., . Quin BEEN EN NEE Ehe; NWNNE WNN- EN cycle. the? . du??g my 23% an as rammed EN ENN NEEN am- this date to: witnNN-N the quE cyciing NE wives. The NNENN was cyaie? 3 WNN in Wham it Ewing EN- ?the; my Emma-Ema CNNENNENN ma by were. to man it New; ENE awner EN NE binding: reg-aims: the N3 ENE-E EN 2815 3333"? NE. .. Emspecmd by. A. RN-gznd-Neg mg? VIE Phatos'taken? Yes;- N. Date GfingneC-?a? - - jaiawaom- ecim- . Date .. {2129155 NWN. 3.2m .?Rev. EN 3:23:33 ?31-3.3333: EN :33: grammars. mm?: EEPEETMEXET 0? WATER . 53$ 53% EWM OF SAFE-W (3F BANS HEP 8:13:31 ENE: 3N TEE EE: Name Uf'Dam RGHME {fl-am Na. Emmi}! 33:53:: 3:133:33: Earth amt: Rm}: Type :33. ?3:333:33 Cmar?a w! DQEE Sactio'n . . Wai?ar' ?33: 323:2: balm: 5:333:333: crest and 2153' 3:33: dam mass-i; W?athe'r Ca?dit?m?a {33:33: 3:33;: Sunny, ?85 d?graas E. 03:33:. 3333: Chen. and 33:33: Gram w: 33:: Eeasm: :33: :mpmsan A: 3353:: Maintenance: 3:333:33: 'L-atga debris 333:3 33:38:: rammed Tran: ?325: :smtmam 33:36.: the :i'a-m :33 rmtumiw, Sits 3:33.: 33:: misia?e Edge: 93? the: 3:33 :sg'?iway 3.323%: 2:33-33:33 33:33:: as Time: :0 3:3 Nair-35:: s-ygtemg ma?unctinr: 33:3 mama: was: unabte tc: 6333:: 333:3: 33:33:: mate: waives :35: s?haituiec?. meg to be made 33:61:: 3:33: 3:23:35: and 3:333:13 {3:513:33 3:333:63 during the: next maintenance inspec?-im. me :ntmmatim andv?mmE in?gnmtim, 3:33. (33:33, maewc?r, 33:355.: gamma-3:: 33:3. ?bggitvat?tarm 33:3 8333333333: . . gm Ne {he tam and 3.33: 333:5: wart?m :33 33:: upstr?art?: 333:3. The dam temai: 3333:33th Shmwe? :33 3:53:39: Engtabii?ty The 3mg: was simsghi, few! and geaz?' sandman. 53:3: abut-meat 3.53pm: be: Marni. The rm}: itni?g :33: the: ug?iream am: :TQWH'stream faces: gape-arm .tc: 33:: stabia, un-ifmm and in SEEN-star}: mndi?m. Large wmdy' 0:833:33 nat'ac: Na upgtraam face during the 33:33:33: insmc?'en had been rammed. as :equegted. VEQ'Ei-atim': 60:33:33: was: and thaw: Ware. 33:) 3:51:33 at" rudant? activity. 8:333:33; The 33:33:33}; apnmach, swim: agaa weir, chute, 3:35: damstreaam Exam-:3: were dear and canawta aurfaaes amaai?ed 33:3 gm canditian 3:13:33 signi?mn: crack: mg waiting. Epitiway 3333333 appaared be: wait atigned 3:36: 3:333:33}: 3ij 3333's: agpearect' tc: he 53:33.33: with. :30 Szg'r: :31? mmemen: a: COTTETMES ta. manifo: the 33:33:23.: 23:39:: on the {333: 53333333): wait a: the ascend expansmm joint :33 the. agar-.3 sat-23mm, but regatta 33:2: signi?cant Waves-3%: Grams. the tag?ea and invert has: 3333:: .recan?y 3:333:33, and 3333:: 33:33:33" Wars: mama}: biawn dear E3313: waives: are Cygi?d by Nib. writ-3:3, and bait: were {3333:3331 {386333333 :mwenea: an 3, 3:333:33: 3:33.: pmmemg, Due; 3:3 3:3 3:393:33 ma?urnsiicn, the a'wna: was. mama: 15:3 33:33:: 333:: 333:: mite-t 3:33:23: during; the 'inapEQ?tim?: .33 Arrangementg med :33 be 3:33:33 :3 fuw?wcie- 333' W3 amt waive daring the next mainte'nanca: i'nsipaeiim. 3: #:5363393 by A G. Ehetasiaken? YES NO 3'3 Date 0f ?3 31?23'34 $133 c-c: for 03:9; Repar: 3033432034- DWR Sheet: ?3 2' INSPECTEQN .aF DAM AND RESERVOIR IN .HIED STATUS Name of Dam Rollins Dam No. 61?21 Date of inspection 9/17/2014 Observations and Comments Seepage The face, groins, and toe of the darn were dry, as usual. The weir longer monitored, as it is deemed unrepresentative of dam seepage conditions due to contributions from other sources. Instrumentation at this dam consists of 7 crest monuments, 26 spillway monuments, and one observation well. The latest instrumentation report was submitted with an owner?s letter dated March 31, 2014, and included data through calendar year 2013. Crest Monuments: The 7 monuments along the crest are surveyed every two years for horizontal and vertical control, most recently in 2013. Between the 2011 and 2013 surveys, maximum vertical and horizontal movements were? an_ respectively. Between the initial survey in 1965 and the 2013 survey, cumulative settlement and deflection wer- anc? respectively. These movements are smali for a large earth and rock dam over such a long period. Spillway Monuments: The last Spillway monument survey was conducted in 2013, and showed spillway wall movements of less thar_ both toward and away from the spillway centeriine. This oscillating movement is normai, and has been noted in several previous reports. The greatest cumulative inward movement wa-@ monument 11 on the left wall in 2009. In July 26, 2013 letter to the owner, we had no objections to the owner discontinuing monitoring of the spiilway wall monuments. Observation Well: The observation well is located on the edge of the crest at the maximum section of the dams. The well is of the core, and readings normaily fluctuate with reservoir elevation. Since the well casing was cleaned in 2008, readings have ?uctuated between 1970 and 1992 feet, which is consistent with data dating back to 1968. No adverse trends were observed, and readings continue to indicate a low and stable phreatic surface within the embankment. I found no irregularities or anomalies in the data to indicate any problems or dam safety concerns. The current instrumentation network is judged to be adequate, and no additional instrumentation is deemed necessary at this time. Sheet 2 of 2 aim-mam. k. - gamm?zm MATURAL %m 1% BEPARTMEN: as waifisg RES-QEUINGEIS 21111.1? BEAMS E33555 ?aN? 5N SEATNEE Narne?f?am R?i?i?s [Zia-m No. {3?3?21 Gaunt? NEVNGN "fyga?w?fz?a'ra' Earth- and. wet?: . ffypenif Esp?izway 0523636 weirand mama! water is; 2'3 fee": b?i?w spiiheyjay- args?z anti 33.6 feet ESEQW dam {ares-st. Waaihar Cigar we? @903 fiiantacts Mada Keane acummaem, Jerry amen: am? T?di??i .J-mdan with ma ?aasan for lhspe?tion . .imgim??m-?gi absawa?wm. Takm The maintenama Emma requira ri?e awnef-?S a'?e??mri: Remma me; mage- wmdy debris the mm a? {$3513. 2, Bask?? and: Sam-mat ?ag ohm-Ned New mas wiside 31*:th 3:521?: waif. A3 aimed ?in B80533 Juiy :28. 2071.3 Eaftar th-e. awnay, we have an abjemjimms ta dimm?nw?g "tha- Spi?ihi?my waii mar; anaemia at this; tima. Warm the: know: Sinfmma?-Gn- and axis-gm? ingpe?i?n. this dam. re-sewafir, and 3-H apm?enamea are judge? safe far mnti'neue? use. @hsewa?mm and {Ba-ms The Great wea- strai'g ht, Save-i; an? in Igimd canditiian. 80m faces exhibi?ed rare: sigma: 5f {3r di3tress. 'E'he rack fase?s: remained abaewa-c} Spaiz?atiicaiiy 33mg the upstteam ?ee. i ma debris be s??amwes?. (if-fa? {ha dam. N23 {Went a?tivity wag obs-ewzad, The. spiB-w-ay appmach, mantra} section ogee weir, and mama-2i- were. dear and unabaimcied. We nhsaw?d the; sipi'iiway aha-?ne? wh?a- wafkiing 36mg ma. {aft waif} The commie mamma- ?in 92096 mnditim wii'h $iggni?cam eff-mains; m?r Q'bssewed. The s-pilingy wa?a appeared {a be swag-hi and leveii, and m3 sigm tn? mmeme?ni. N333 gaminues?; mmimr me crack "m?aswing devica 193323593?? ma ieft. spi?way wan hatwaen the wa? pa?as at: the aemnd joint dawns-tram? Gf-ihe engage :sacfian. Th9. device wag absewac? during this Enspers?ar} and mnfinues to ?3?in ?fties: s?gns cf maveme?t; Erosi-mm ri?s along ih-e ou?side 36ft Chan-n33 exist and are an wading mainiename Rem at. the dam. The are deeper mas-am are sporaditsa'?iy Ema-item! Sizing the entire ?eng?th m? the wait {requested {hay E33 mmpa?ed arid ba?kfilmi. As. stated in 933% ingpac?o? mpmg. the Fangstandmg ail-?ea gimme both waiis are: mt mama-d ?33 has. map swim. and they dc: mi cause. a dam 2312152333; time. The: si-idaia amw the Ea?. was?! was xiiaib'ie ?aring this inspectim. S?da nmiariai .55- kerm. pi?ed gaff the gpiijiway waif Ou?gt haspaqted by T. Jimenez Ph?t?s?aka?? Yaszg . Data 01? inspectitm I I . ??18f3??g?i3 eixif'm' . I Dammimpm @117?529'33 W3 313? :3an {Rs-w. was?) aha-eat mi?. 6? ,4 DAM AND RESERVOIR IN STATUS Name of Dam Roll-ins Dam No. 51 -21 Date of inspection 10/31/2013 Observations and Comments Seegage Both valves were fully cycled in presence on 1/27/2011, with no reported problems. cycles the valves annually and last cycled them in the Spring of 2013. We walked th_ and branched section leading to th_ controls during this inspection. Th_ remains tight and sound with minimal wetness observed along the tunnel floor. The? plug was dry with no signs of leakage. The branched section housing th_ controls was in good condition. The plug in the branched section was dry with no signs of leakage. Arrangements to walk th_ tunnel and cycle both valves need to be made during the next inspection. DSOD last observed th_tunnei on 1/27/2011. No seepage was observed on the face, groins, or toe of the dam. The weir longer monitored since it is influenced by other sources and does not represent seepage from the dam. instrumentation at the dam consists of 7 crest monuments, 26 spillway monuments, and one observation well. The latest surveillance report was submitted with an owner?s letter dated July 1, 2013. Crest Monuments: Monuments are surveyed every two years for horizontal and vertical control. Monuments were last surveyed in 2011. Data was reviewed in the 10/5/2012 inspection report. All movements were found to be minimal. The next survey is due in 2013. Spillway Monuments: The spillway has a total of 14 monuments along the left wall and 12 monuments along the right wall. The monuments were installed in 2005 to measure deflection and are surveyed annually. Both walls continue to show oscillating movement toward and away from the center line on the spillway. These movements are considered minimal. The greatest inward movement along the right well i- and the greatest inward movement along the left wall is Since 2005, there has been no indication that the slides observed above both spillway walls are deflecting the walis inward. In the report recommended discontinuing monitoring of the spillway walls as they do not consider these readings to be a serious risk to dam safety. In July 26, 2013 letter to the owner, we had no objections to the owner discontinuing monitoring of the spillway wall monuments. Observation Well: The observation weil is located on the edge of the crest at the maximum section of the dam, of the core. Readings are recorded The well tip elevation i_ (measurement taken in field during this inspection). The crest elevation i_ The readings fluctuate with changes in the reservoir level. Since the well casing was cleaned in 2008, readings have fluctuated between 1970 an_ This is consistent with data dating back to 1968. No adverse trends are observed and the readings continue to indicate a low and stable phreatic surface. The current instrumentation network is judged to be adequate, and no additional instrumentation is deemed necessary at this time. Dwaizei (rev.10/09) Sheet 2 of 4 .mme w?g ?yaw WK amm? Imam. zen, gem. gm. 9% 2., ?Eng?? 6&1me i, . .. . LlSwEmm Wag Qm?. Qw?m $3 Em mem?c? manna533%. E3 Egg #0 0% ?ya ?33 amgm 33% ,6 .3 $3.33. 9233?me mvvamm? $me m?w??aw. .. 7,7? x/zw/HMU .27 4, . 4 w. . xmx?mww?/erni(.1. .7 7,777 .. . . . A (I .. ?77urn/ru? .. .. .. . mxmav?? again. ma?a . . mam. . STATE w; SWLEFQHNEW AGENCY WW WWTER WSW: W: {333' WAFETY WW: WW Name m: ?33m Ra?i?? ?am?g Sammy Type Sam WW5 Type of (lg-"W Weir Wm miscs?W-te Wham-WE Water is 2.3 fegs? spi?way ting} 19:4 {Wet . ciamcres?. Weaiher 5.3363 -. Harri?mnj?ih . .. . fer inspemimn anaai Ma?ihia?ance The if} W2 and =39me ?awed Wars-g; the: QuiWidW WW $27331in mama} WM, me ma mam? ?wfm?matiQ-W and mm} irigpm??m the? dam and W?ijigad far ma?nue? use. {Ea-mg SEW-wag The mast straight WW, and in gem-{i 80th Wages; exhib?i?d no Signs The rimaga Wm bath 'faaes infat?. VWgWia?ti-Qn min?mi wag exce??iem, Ne; "(indent ac?vity wag absewed. The. SpiiEWWy appmarsh, Wacfian 013W: we-iir,_ and emanate: meat" and unm-Wsiruated, We maawad the diam-e2 Wang tha WW: scharnnai wail. The canscraie remains in Wa?afactery cand-it'icm with s'ign'i?canji crack-mg The. WW waii. was \iiawe'd in be: straight and with m- Wigns 0f movemanf., awti?ues {a manimr WW crack meaguring inst-alien! an the ief-t charm? waif. The devise: has; Wham maven-Wm since 'i {swerved it W's-3f. Wm mi?izmai Wigwam-Ry. Wit; hams absmed is be. mam. The enigma aimn?g {he were again abs-awed. amaim angWt-W {it} WW fuii?iher Man the What was remira? Easi- year; hawevar, this aka-sewed Seci'i?? m? erasiim has previous?y been regair?ed, Rumff water dawn the .matside <91:th {shame} appears?? We N513 is mntinue i??a ?u and mamas: the mb?aweci erasim as named. were f?uil?y 651de in {3363?s an ?27352-31? WW m2: pramams, NEW waxes ?ma. and WW chEeii '55th vaiva on '5 We. waikead iz-h.e? and Waugh-WW :S?i?ti?j? Wading its tha gamma {wring mis- inspec?m, The fumes: remains in satisszWa-ry- The. WW absawed: hi) The WLatEeti- wag; siigh?y mumwith m3: 1?;ng ?aw. The - inspected by GSQQ The; ?if-Limes! was rW-m?WdE-y' it} :saitisfacmry mm?ti?n, with mi?ar caE-cif-iea?m away-wed ihrougtwui the tag-magi, by . Jgg?a?gz m. Weft-3r .Qxamegji?wk 03W cf? Rep-m gm maxi-111F529} Sheet: 1 a? Or SAM AND RESERVOIR IN .150 STATUS Name of Dam Rollins Darn No. 51?21 Date of Inspection 9/10/2012 Observations and Comments Seegage No seepage was observed on the face, groins, or toe of the dam. The weir at the toe is no longer monitored since it is in?uenced by other sources and does not represent seepage from the dam. Instrumentation at this dam consists of 7 crest monuments, 26 spillway monuments, and one observation well. The latest surveillance report was submitted with an owner's letter on April 30, 2012, for calendar year 2011. Crest Monuments: The 7 crest monuments are survey every two years for horizontal and vertical control. Monument 3 was destroyed in 1965, and is no longer surveyed. The latest survey was performed in 2011. Since the last survey, maximum horizontal and vertical movements have been 0.016? (monument 9) and 0.004? settlement (monument 5). Historically the maximum horizontal and vertical movements have been 0.26? (monument 5) and 0.17? settlement (monument 5). This amount of movement is considered minimal for a rockfill dam of this Size. Spillway Monuments: The dam has a total of 26 spillway monuments, 14 along the left wall and 12 along the right well, established in 2005. Monuments are surveyed annually for deflection. Since the 2010 survey, many of the monuments which measured large increases away from the center line returned back toward the centerline. The right wall has measured a maximum deflection of 0.016? toward the center line and the left wall has measured a maximum deflection of 0.055? toward the center line since initial surveys began. These movements are considered relatively small and do not pose a dam safety concern at this time. Observation Well: Observation well readings are recorded ln 2011, readings ranged from 1973? to 1991?. Data continues to fluctuate with precipitation and changes in the reservoir level. Since the well casing was cleaned in 2008, a spike in the data was observed, reading approximately 8?10 higher on average. Measurements have consistently ranged between 1970? and 1990? since that time. Historical data shows measurements ranging from approximately 1960' to 1998? dating back to 1968. The readings are considered normal and indicate a low and stable phreatic surface. Sheet 2 of 2