LGR Adult Ladder Temperature Permanent Fix NOAA Biological Goals: 1) Allow fish the opportunity to exit the ladder without stalling or

excessive up/down movement. 2) Give fish a cool transition to the deeper forebay water so they

don’t continue to fallback at high rates. Discussion: Do not know/have confidence that fallback increases with

higher water temperature or certain operational flow pattern and route magnitudes:

i.e., H0 fish exiting @ higher shallow water = higher fallback (due to

greater exposure to surface spill?) versus H1: fish exiting @ lower deeper water = higher fallback (due to

greater exposure to turbine intake flow or deeper spill flow?).

Corps Biological Goals: Reduce ladder entrance/exit differential in temperature to <2 deg

F for no delay in fish passage from entrance attraction through ladder exit into deeper water of forebay.

LGR Adult Ladder Temperature Permanent Fix

ESA Consultation:Covered in 2008 and 2014 FCRPS BiOp but

coordination on specific installation details on timing work windows, plus construction effects and component needs/ specifications remain to be closed .

1) Received verbal on fish screens covering end of extended pipes not required due to deep depth (>66’) and limited exposure to entrainment hydraulics for capturing fry or smolts. Need to receive formal confirmation.

2) Scheduled allowable duration and work window dates (currently ending 29 May 2015). Effects::

ID Task Name Duration Start

1 Project Kick-off 0 days Sun 4/6/14

2 Scoping / PMP 25 days Mon 4/7/14

3 30% Design 50 days Mon 5/12/14

4 30% Design 30 days Mon 5/12/14

5 Draft Plans 10 days Mon 6/23/14

6 Print Plans 5 days Mon 7/7/14

7 Plan Review 5 days Mon 7/14/14

8 90% Design 38 days Mon 7/21/14

9 90% Design 22 days Mon 7/21/14

10 Draft Plans 4 days Wed 8/20/14

11 Print Plans 2 days Tue 8/26/14

12 Plan Review 10 days Thu 8/28/14

13 Const Docs & Award 187 days Thu 9/11/14

14 Add CT specs 2 wks Thu 9/11/14

15 Dist BCOE P&S 1 wk Thu 9/25/14

16 BCOE P&S Review 3 wks Thu 10/2/14

17 BCOE Mtg / Comments due 0 wks Wed 10/22/14

18 BCOE Clean-up 2 wks Thu 10/23/14

19 BCOE Back Check 2 wks Thu 11/6/14

20 Finalize BCOE 1 wk Thu 11/20/14

21 BCOE Cert (QMC document) 0 wks Wed 11/26/14

22 prepare IFB 4 wks Thu 11/27/14

23 Issue IFB 0 wks Fri 12/26/14

24 advertise 5 wks Mon 12/29/14

25 Open Bids 0 days Fri 1/30/15

26 Contract Award 4 wks Mon 2/2/15

27 Mob & Fabrication 39 days Mon 3/2/15

28 On-Site construction 26 days Fri 4/24/15

4/6

4/7

5/12 6/20

7/21 8/19

9/11 9/24

10/2 10/22

10/22

11/26

12/26

1/30

Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr May Jun Jul2014 2015

5/29/2015

LGR Adult Ladder Temperature Permanent Fix Work window: Current schedule says install via divers through 29 May 2015. Corps need to

know allowable work window end date by 15 September 2014 so BCOE on Final Design can be completed for FY2015 install –or- delayed for FY2016 install.

Normal Operations during construction would be FPP operations for juvenile fish passage and adult fish attraction and passage.

Dive to install each of auxillary pumps entended pipes and Diffuser 14 “chimney” requires the adult ladder exit to be closed in addition to Diffuser 14 Intake OUT = ladder hydraulic function OUT. Best to schedule completion by the first week of May to avoid adult Chinook passage impact.

Full ladder outage required for 3-6 days in May. 30 hr dive for pipe extensions + 35 hr dive for chimney = 65 hrs. If 10 hr

dive shifts then single shift days would = 6 days. PREFERRED: If double-shift with 10 hr dive shifts then would = 3 days.

Adult Fish passage distribution: A concern for adult Chinook passage (10 yr 51.8% (42.2-63.5%)): if end 1 May then only 2001 dist’n affected. Minor concern for wild steelhead (10 yr 8.4% (1.8-6.4%)). No concern for sockeye because have not started passage @LGR until mid- to late-June.

24 APR – 29 MAY construction could overlap with ~90% run of juvenile yearling Chinook, steelhead, coho, and sockeye passing through summer spill of 20 kcfs @ LGR (16-28% spill for 70-120 kcfs inflow).Although very high juvenile passage overlap, location of pipe install at LGR ladder should not other than consequential impact juvenile salmonid passage.

Juvenile Salmon

31-M

ar

5-Apr

10-A

pr

15-A

pr

20-A

pr

25-A

pr

30-A

pr

5-M

ay

10-M

ay

15-M

ay

20-M

ay

25-M

ay

30-M

ay4-

Jun9-

Jun

14-Ju

n

19-Ju

n

24-Ju

n

29-Ju

n4-

Jul9-

Jul

14-Ju

l

19-Ju

l

24-Ju

l

29-Ju

l

3-Aug

8-Aug

13-A

ug

18-A

ug

23-A

ug

28-A

ug

-2000

0

2000

4000

6000

8000

10000

12000

2001

2005

2011

2013

2013-2004

LGR Adult Chinook Passage: 42-63% passage overlap with pro-posed ladder outage window, best window 1 APR-23 APR or 2nd week of June.

Chinook 2001 2005 2011 20132013-2004

24APR-29MAY 117116 16264 41030 26293 33620.41APR-23APR 31453 11 19 71 17330MAY-31AUG 35747 16238 56153 18783 31058.6 67200 16249 56172 18854 31231.6Total Run 1APR-31AUG 184316 32513 97202 45147 64852% 24APR-29MAY 63.54088 50.02307 42.21107 58.23864 51.84173

1-M

ar

7-M

ar

13-M

ar

19-M

ar

25-M

ar

31-M

ar

6-Apr

12-A

pr

18-A

pr

24-A

pr

30-A

pr

6-M

ay

12-M

ay

18-M

ay

24-M

ay

30-M

ay5-

Jun

11-Ju

n

17-Ju

n

23-Ju

n

29-Ju

n5-

Jul

11-Ju

l

17-Ju

l

23-Ju

l

29-Ju

l

4-Aug

10-A

ug

16-A

ug

22-A

ug

28-A

ug0

200

400

600

800

1000

1200

1400

1600

2001

2005

2011

2013

2013-2004

LGR Adult Wild Steelhead Passage: 2-8% passage over-lap with proposed ladder outage window, best window 17 MAY-21 JUN.

Wild Steelhead 2001 2005 2011 20132013-2004

24APR-29MAY 394 346 1496 525 509.3

1APR-23APR 2158 1032 5771 2449 1485

30MAY-31AUG 19180 5910 24551 5171 4076.5

21338 6942 30322 7620 5561.5

Total Run 21732 7288 31818 8145 6070.8

%24APR-29MAY 1.812995 4.74753 4.701741 6.445672 8.3893391

7-Ju

n

10-Ju

n

13-Ju

n

16-Ju

n

19-Ju

n

22-Ju

n

25-Ju

n

28-Ju

n1-

Jul

4-Ju

l7-

Jul

10-Ju

l

13-Ju

l

16-Ju

l

19-Ju

l

22-Ju

l

25-Ju

l

28-Ju

l

31-Ju

l

3-Aug

6-Aug

9-Aug

12-A

ug

15-A

ug

18-A

ug

21-A

ug

24-A

ug

27-A

ug

30-A

ug

-20

0

20

40

60

80

100

120

2001

2005

2011

2013

2013-2004

LGR Adult Sockeye Passage: virtually 0% passage overlap with proposed ladder outage window, best window is prior to 24 June.

No Sockeye in May

LGR Adult Ladder Temperature Permanent Fix Effectiveness Monitoring: 1) Repeat thermometer coverage to determine temperatures resulting from

remedial actions: critical location temperature trending for differential distribution and sub-lethal maximums or too cold zoning.

2) PIT passage evaluation real-time to determine delay behaviors, fallout, up/down, over-nighting, multiple re-ascension, etc.

3) Hour and daily observe numbers and density of adults holding and exiting patterns (time and timing) through ladder exit to ensure successful exit and movement upriver through immediate forebay zone. Possible methodology: split-beam (or split-beam tracking) hydro-acoustics covering ladder exit numbers and direction to priority spill and priority turbines (determine risk to fallback and dominant route of fallback). A) Hydro-acoustics for sockeye/chinook behavior confounded by shad. Could

tag only shad with JSATs or RT to sort? B) RT possible, better behavior tracking/directionality from JSATs sample of

sockeye/summer chinook ~50 minimum, 100 better depending on trap location. i) During future LGR PSE following completion new JFF1a and 1b. Likely

2017? ii) If region deems priority importance…then Prior future LGR PSE. Likely

2016? Concern is what other construction being performed simultaneously where other construction consequences/effects could confound ladder temperature results interpretation. Likely most significant is major JFF1a construction 2015-2017.