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BON R 051598 1530 SN LWG LGS LMN IHR BPC BPA NPB NPD NPW NPC

CO BON TDA JDA MCN BPA BPC NPD NPB NPC NPP

 

ATTENTION: COLUMBIA RIVER BASIN PROJECTS AND BPA

SUBJECT: 1998 SPILL PRIORITY LIST (UPDATE 12)

 

1. SPILL IS OCCURRING AT LOWER COLUMBIA AND LOWER SNAKE RIVER PROJECTS TO PROVIDE NON-TURBINE FISH PASSAGE. (SEE TELETYPES ENTITLED "FISH OPERATIONS").

2. IF SPILL ABOVE THAT OUTLINED IN THE MOST CURRENT "FISH OPERATIONS" TELETYPES, FOLLOW THE SEQUENCE OUTLINED BELOW TO DISTRIBUTE SURPLUS SPILL DUE TO LACK OF LOAD. FOR FORCED SPILL DUE TO LIMITED CAPACITY OR STORAGE, SEE PARAGRAPH 5.

A. SPILL TO 120% TDG DURING THE DAYTIME ONE PROJECT AT A TIME IN THE FOLLOWING ORDER: JDA, MCN, LMN, LGS;

A1. IF DAYTIME SPILL AT LMN IS EXPECTED TO EXCEED 20 KCFS, USE NIGHTTIME SPILL PATTERN AND SPILL UP TO 120% TDG (30 KCFS).

BJORN REPORTS NO IMPACT TO ADULT PASSAGE WITH THIS PATTERN.

A2. IF DAYTIME SPILL IS EXPECTED TO EXCEED 25 KCFS AT LGS,

USE NIGHTTIME SPILL PATTERN AND SPILL UP TO 120% (45 KCFS).

BJORN REPORTS NO IMPACT TO ADULT PASSAGE WITH THIS PATTERN.

B. SPILL TO 110% TDG AT PRD, RRH, WEL, RIS, WAN, CHJ, GCL

C. SPILL UP TO 110% TDG AT DESIGNATED WILLAMETTE PROJECTS

D. SPILL TO 120% TDG AT PRD, RRH, WEL, RIS, WAN, CHJ, GCL

3. WHEN SYSTEMWIDE TDG EXCEEDS 120%, TRY TO CONTROL SYSTEMWIDE TDG TO 125%. SPILL IN THE FOLLOWING ORDER: MCN, LMN, LGS, JDA, BON (NIGHTTIME ONLY), IHR (NIGHTTIME ONLY),PRD, RRH, WEL, RIS, WAN, TDA, LWG, CHJ, GCL

4. THE SPILL CAPS (KCFS) FOR THE VARIOUS TDG LEVELS(%) ARE LISTED BELOW, SUBJECT TO PERIODIC CHANGES BASED ON REAL-TIME DATA. SPILL CAPS AT EACH PROJECT AND EACH TDG LEVEL ARE AS FOLLOWS:

PROJECTS

110

115

120

125

130

135

Comments

BON(1)

 

 

 

 

170

210

230

 

 

mod.5/14/98

TDA

90

170

230

300

500

600

 

 

JDA

50

100

150

190

220

250

mod.5/14/98

MCN

50

80

150

200

250

340

 

 

IHR

30

50

90

105

120

140

 

 

LMN

10

20

30

70

100

120

mod.5/7/98

LGS

30

40

45

80

100

130

 

 

LWG

20

30

45

65

90

100

 

 

PRD

25

30

40

100

210

350

 

 

WAN

10

15

20

50

100

200

 

 

RIS

5

10

20

30

150(2)

300

limited data

RRH

5

10

20

30

150(2)

300

limited data

WEL

10

15

25

45

130(2)

300

limited data

CHJ

10

15

20

30

50

70

 

 

GCL(3)

5

7

10

20

30

40

 

 

HCR

.6

.6

.6

.6

.6

.6

 

 

BCL

1

1

1

1

1

1

 

 

CGR

.6

.6

.6

.6

.6

.6

 

 

PROJECTS

110

115

120

125

130

135

Comments

(1) FOR LACK OF CAPACITY SPILL AT BONNEVILLE, SPILL AS FOLLOWS: IF NOT POSSIBLE TO MAINTAIN THE 75 KCFS

LEVEL DURING DAY, HOLD THE SPILL LEVEL BELOW 100 KCFS AS LONG IN THE DAY AS POSSIBLE BEFORE INCREASING SPILL.

SPILL TO 120% TDG DURING THE NIGHTTIME (ABOUT 170 KCFS). IF MORE SPILL IS NEEDED AT NIGHT TO ENSURE REACHING THE 75 KCFS DAYTIME SPILL LEVEL, SPILL UP TO 125% TDG (ABOUT 210 KCFS). (SPILLING TO THE 125% TDG LEVEL WAS

AGREED UPON AT THE MAY 6 TMT MEETING).

5. FOR FORCED SPILL AT OTHER PROJECTS DUE TO LACK OF CAPACITY OR STORAGE, TRY TO MINIMIZE DURATION AND MAGNITUDE OF SPILL (TO MINIMIZE TDG LEVELS) BY USING TEMPORARY STORAGE UNTIL IT IS EXHAUSTED.

6. THIS TELETYPE IS CONSISTENT WITH INSTRUCTION IN THE "FISH OPERATIONS" TELETYPES AND IS CONSISTENT WITH THE DRAFT 1998 DISSOLVED GAS MANAGEMENT PLAN. RCC POC'S ARE BOLYVONG TANOVAN AND MARY TODD UHLIR.

BOLYVONG TANOVAN

CENPD/RCC

RCCBT/MTUCAP12

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