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SLIDE 1

This is a digital document from the collections of the Wyoming Water Resources Data System (WRDS) Library. For additional information about this document and the document conversion process, please contact WRDS at wrds@uwyo.edu and include the phrase “Digital Documents” in your subject heading. To view other documents please visit the WRDS Library online at: http://library.wrds.uwyo.edu Mailing Address: Water Resources Data System University of Wyoming, Dept 3943 1000 E University Avenue Laramie, WY 82071 Physical Address: Wyoming Hall, Room 249 University of Wyoming Laramie, WY 82071 Phone: (307) 766-6651 Fax: (307) 766-3785 Funding for WRDS and the creation of this electronic document was provided by the Wyoming Water Development Commission (http://wwdc.state.wy.us)

SLIDE 2

ROCK SPRINGS PIPELINE LEVEL II PRESEN'rATION TO WYOMING WATER DEVELOPMENT COMMISSION

1989

THE STATE '\~:1J

OF WYOMING

Forsgren Associates 75 Yellow Creek Road, #302 Evanston, Wyoming 82930

SLIDE 3

ROCK SPRINGS PIPELINE LEVEL II STUDY

FUNDED BY

WYOMING WATER DEVELOPMENT COMMISSION

GREEN RIVER * ROCK SPRINGS * SWEETWATER COUNTY JOINT POWERS WATER BOARD Ilia FOR S G R E N

~-

_

ASSOCIATES 7 P.A.

SLIDE 4

ROCK SPRINGS WATER SYSTEM SUMMARY OF PROBLEMS

1) INADEQUATE SUPPLY CAPACITY (INTAKE & TRANSMISSION LINE)

PRESENT GROWTH LIMITATION
12 1/2% OF POPULATION NOT SERVED
INABILITY TO ACCOMMODATE ECONOMIC EXPANSION

2)

EXCESSIVE PUMPING COSTS

UNDERSIZED EXISTING TRANSMISSION LINE
DOUBLE PUMPING/CONTINUOUS PUMPING
18 PUMP STATIONS -

ONLY 7 NEEDED

LACK OF DEDICATED TRANSMISSION/PEAKING STORAGE

3)

POOR SYSTEM RELIABILITY/ POTENTIAL SERVICE INTERRUPTION

LACK OF SYSTEM BACK-UP
LACK OF ADEQUATELY SIZED &: LOCATED BACK-UP STORAGE
RELIANCE ON CONTINUOUS PUMP OPERATION
AGING &- DETERIORATION SYSTEM COMPONENTS
NO STANDBY POWER (2 DAYS WITHOUT WATER LAST SUMMER)

JIj! FOR S G R E N

_

ASSOCIATES I P .A.

SLIDE 5

PUMPING VS CAPACITY

EXISTING 20" AC PIPELINE

80~-~

7000 6000 5000 4000 3000 2000 1000 2020 PEAK DAY - 15.14 (VEL - 10.7 f'ps) 2020 AVE. SUMMER DAY - 13.14 MGD (VEL - 9.3 fps) 1988 PEAK DAY INCLUDING AREAS NOT SERVED -

11.01 MGD

(VEL - 7.8 fps) 1988 PRESENT PEAK DAY - 9.78 MGD (VEL - 6,9 fps) DESIRABLE OPERATING RANGE (VEL - 2.8 TO 5.0 fps) 1988 AVE. SUMMER DAY- 8.52 MGD (VEL - 6.8 fps)

~-~-~-~-~-~-~-~-~ o

2

4

6

8 10 12 14

16

PIPELINE FLOw (MGD)

FIGURE 5,2

__________________________________ ..

~MOEN

__________________________________

_

.... __

,,,.A.

SLIDE 6

ROCK SPRINGS LEVEL 11

SUMMARY OF RECOMMENDED IMPROVEMENTS

* NEW 30" ROCK SPRINGS PIPELINE

SUPPLY FOR ENTIRE ROCK SPRINGS AREA
4 MG PEAKING STORAGE -

ELIMINATE 6 PUMP STATIONS

* NORTHSIDE WATER SUPPLY

SUPPLY AREAS NOT SERVED
ALLOW FUTURE GROWTH
2 MG STORAGE TANK
ELIMINATE 3 PUMP STATIONS

* STASSINOS WATER SUPPLY

SUPPLY 10-MILE DISTRICT
150, 000 GALLON STORAGE

* EAST SIDE WATER SUPPLY

SUPPLY EASTSIDE AREAS
ELIMINATE 5 PUMP STATIONS
3 MG STORAGE TANK

* NEW RAW WATER INTAKE FACILITY

ABANDON EXISTING
SEDIMENTATION POND
INCREASED CAPACITY
BETTER LOCATION & MAINTENANCE

JEri FOR S G R E N

=

ASSOCIATES I P.A.

SLIDE 7

ROCK SPRINGS PIPELINE LEVEL '

11 STUDY

RECOM. MENDED' PROJECT OVERVIEW

PROPOSED FACILITY LEGEND PROPOSED PIPELINE TANK PUMP STATION

ROCK

SPRINGS

~

\ .

!'

SLIDE 8

ROCK SPRINGS LEVEL 11 RECOMMENDATIONS PROJECT BUDGET

* CONSTRUCTION COSTS:

30" ROCK SPRINGS PIPELINE/

BLAIRTOWN STORAGE

NORTHSIDE WATER SUPPLY
STASSINOS WATER SUPPLY
EASTSIDE WATER SUPPLY
GREEN RIVER INTAKE FACILITY

SUBTOTAL

* ENGINEERING COSTS~·

DESIGN/SURVEY/PERMITTING
CONSTRUCTION SERVICES (10%)

SUBTOTAL

* 15% CONTINGENCY:

TOTAL PROJECT BUDGET

33% LOCAL SHARE

$ 9,248,000

2,113,000 2,830,000 596,000 2,417, 000

$ 1,100,000

1,720,000

* ANNUAL LOAN PAYMENT (4% -

40 YEAR):

* GREEN RIVER SHARE == $ 18,873/YEAR

* ROCK SPRINGS 4REA SHARE == $ 365,000/YEAR

jiii FOR S G R E N

==

ASSOCIATES I P .A.

$ 17,204,000

$ 2,820,000 $ 3, 000, 000

I

$ 23,024,000 I

I

$

7,597,920 I

I

$ 383,873.00 I

SLIDE 9

ROCK SPRINGS LEVEL II RECOMMENDATIONS COST -

BENEFIT ANALYSIS

*

NON-QUANTIFIABLE BENEFITS

HEALTH & SAFETY
FUTURE ECONOMIC GROWTH
PROPERTY VALUE INCREASE
CONSTRUCTION SPIN-OFF

*

COST BENEFIT RATIO

3D-YEAR, PRESENT WORTH, 1% GROWTH ADDITIONAL TREATED WATER DELIVERED

ELECTRICITY COST DIFFERENCE PUMP STATION 0 & M REDUCTION 30-YEAR, PRESENT WORTH, 1/2% GROWTH ADDITIONAL TREATED WATER DELIVERED ELECTRICITY COST DIFFERENCE PUMP STATION 0 &: M REDUCTION FOR S G R E N

ASSOCIATEs 7 P .A.

$ 18,960,000

6,133,000 554,000

$ 25,647,000 /$ 23,024,000

11,11 I

$ 13,411,000

5,041,000 554,000 $ 19,006,000 /$ 23,024,000 10.831

SLIDE 10

ROCK SPRINGS LEVEL 11

ABILITY TO PAY ANALYSIS "PRESENT POPULATION"

* PRESENT "EQUIVALENT' WATER USERS

CITY OF ROCK SPRINGS WATER USERS

FUTURE SERVICE AREA WATER USERS

TOTAL E)(ISTING WATER USERS

* PROJECTED WATER USER RATES

11, 1

95

540 EXISTING MONTHLY WATER BILLING

$ 22.95

ROCK SPRINGS PIPELINE PROJECT BILLING

2.59 11,735 TOTAL PROJECTED MONTHLY BILLING

$ 25.54

* POTENTIAL ENERGY COST SA VINGS

1.34

* POTENTIAL MONTHLY WATER USER RATE 1$ 24.20 I

j!i~

FOR S G R E N

;

ASSOCIATES 7 P.A. ----------=--

SLIDE 11

APPENDIX: Detailed Information

SLIDE 12

ROCK SPRINGS LEVEL II RECOMMENDATIONS ROCK SPRINGS TRANSMISSION LINE

*

NEW 30" T. W. STEEL OR D.I. PIPELINE

* PREFERRED NORTHSIDE ROUTING

* ABANDON SIX PUMP STATIONS

WEST, MIDDLE, EAST KANDA
SWEETS

*

REPLACE GREEN RIVER PUMPS

INDUSTRIAL
BLAIRTOWN

*

CONSTRUCT NEW 4 MG BLAIRTOWN TANK

FORSGREN

AssocIATES I p.A.

SLIDE 13

r-

(/.)

D

U

18 16 14 12

10 8 6

4

2

FUTURE 30- YEAR

REPLACEMENT OF

20' AC LINE

OPTIMAL PIPE

SIZE = 30' TOTAL 30-YEAR p,,,,, COST PIPELINE/PUMP STATION

CONSTRUCTION COST

/ 30-YEAR P

..,.

ENERGY COST

30-YEAR COMPARITIVE

~

4 MG BLAIRTo'WN

TANK CONSTRUCTION

to. M

24"

30" 36//

PIPE DIAMETER

ROCK SPRINGS PIPELINE

OPTIMAL PIPE SIZE

._. n~

~G

R E N OC T

I P.A.

FIGURE 8.1

SLIDE 14

ROCK SPRINGS LEVEL II RECOMMENDATIONS NEW NORTHSIDE TRANSMISSION

*

NEW 14 TO 18 INCH PVC TRANS. LINE TO WHITE MOUNTAIN

*

DIRECT SUPPLY FOR CLEARVIEW & WHITE MOUNTAIN DISTRICTS

*

SUPPLEMENTAL SUPPLY TO ROCK SPRINGS NORTHSIDE AREA

*

NEW 2 MG WHITE MOUNTAIN TANK

*

TWO NEW PUMP STATIONS

RETROFIT INDUSTRIAL
CONSTRUCT WHITE MOUNTAIN

* ABANDON THREE OLD PUMP STATIONS

FOOTHILLS
ELK STREET

* ABANDON CLEAR

VIEW TANKS

.~1i

1

~

S G R E N

S oe ATES I P.A.

OUTLAW

SLIDE 15

ROCK SPRINGS LEVEL II RECOMMENDATIONS

10-MILE WATER & SEWER DISTRICT (STASSINOS)

*

NEW 8-INCH PVC TRANS. LINE FROM WHITE MOUNTAIN TO STASSINOS

*

NEW 0.15 MG STORAGE TANK AT STASSINOS

*

GRAVITY-FED SUPPLY - NO PUMP STATIONS

FOR S G R E N

ASSOCIATES I P.A.

SLIDE 16

ROCK SPRINGS LEVEL II RECOMMENDATIONS NEW EASTSIDE TRANSMISSION

*

NEW 18" PVC TRANSMISSION

*

HIGHWAY 376 ROUTING

*

NEW 3 MG EASTSIDE STORAGE

*

CONSTRUCT NEW EASTSIDE PUMP STATION

* ABANDON FIVE OLD PUMP STATIONS

THOMPSON
D STREET
SUNSET
BIGHORN
EDGAR

* ABANDON THREE TANKS

EDGAR
SUNSET
PALISADES

FORSGREN

ASSOCIATEs J P.A.

SLIDE 17

ROCK SPRINGS LEVEL II RECOMMENDATIONS NEW RAW WATER INTAKE FACILITY

* ABANDON EXISTING INTAKE FACILITY *

CONSTRUCT NEW FACILITY NEAR TREATMENT PLANT

90,000 SF SETTLEMENT BASIN
16,000 GPM CAPACITY
CUT-OFF WALL/CHANNEL STABILIZATION
AUTOMATED MAINTENANCE FEATURES
SLUDGE DRYING BEDS

FORSGREN

ASSOCIATES I P

.A.

SLIDE 18

ZONE 1 ZONE 2 ZONE 3 ZONE .. ZONE 5 ZONE 6 ZONE 7 ZONE 8 ZONE 9 ZONE 10 ZONE 11 ZONE 12 ZONE 13 ZONE H

CLEARVIE'J

SOUTH

RESERVOIR

32

5

8

17

LEGEND

EXISTING BASE ZONE EXISTING FOOTHILLS ZON::

33

16

EXISTING 'w'ASHINGTON AVE. ZONE EXISTING THOMPSON STREET ZONE EXISTING BIG HORN ZONE EXISTING SPRINGS DRIVE ZONE21 EXISTING EDGER STREET ZONE EXISTING SUNSET ZONE EXISTING COLLEGE ZONE EXISTING OUTLA'w' ZONE EXISTING ELK STREET ZONE EXISTING S'w'EETS ZONE EXISTING HILL TOP ZONE EXISTING RELIANCE ZONE

29

.....

INDUSTRIAL PUMP STATION

CITY

34 22

OF

11

LIONKOL

RESERVOIR

24

ROCK SPRINGS

If)

~

20 N.

19

30

SUNSET PUMP

STATlDN

31

T. 19 N.

6

PRESENT SERVICE ZONES AND SYSTEM COMPONENTS

~

__________________________________

j_~FORSQREN

________

Fl_G_URl

_____

5_.3

________________

,

5£ AeeoCIATa I ,.

...

SLIDE 19

MATC

32 33

5

8

17

LEGEND ZONE 1 PROPOSED BASE ZONE ZONE 2 PROPOSED WIND RIVER ZONE

1

~ ZONE 3 PROPOSED WASHINGTON AVE. ZONE ZONE 4 PROPOSED EAST SIDE ZONE ZONE 5 PROPOSED "HLTE MOUNTAIN ZONE 6 ' PROPOSED GATEWAY ZONE PR[1POSED IMPROVEMENTS

ZONE

rACIUTlES TO BE ABANDONED

X

29

TIE T(]

CLEARVIE'w'

L-..

"""' ..

INDUSTRIAL

PUMP

STATION

34

ZO

2 ~

t:J

~

~ ~ CJ

~
..J

;::;

~

22

11

\

L ~

L .R

~

DIR

4

\

1

ZONE 5 ZONE 5

24 20

ZONE 5

29

Lf)

.......
T. 20 N.
I
6
I
I 19
I

30

31

T. 19 N.

6

CITY OF ROCK SPRINGS

PROPOSED SERVICE ZONES AND SYSTEM COMPONENTS

~

________________________________

IFO~EN

__________

r_lG_U_R_£_8_._2 ______________

~

~".A.

SLIDE 20

CHANNEL STABLIZATION AS RECD. CTYP) CUTOf'f' \lALL INLET ISOLA nON GATES (MUL TIPLE GA TES AT VARIABLE LEVELS) GRAVEL RDAD TO DRYING BEDS TREATMENT PLANT ~ CLARIFIER TANKS Y

1/

II

1/

( 'WINTER BYPASS , PIPE TD PREVENT

1/

=:::::-~

BASIN ICING

1/

~ {PUMP

=========

'WEIR 'WALL

\II TRASH RACK,

MECHANICAL CLEANER..

& COLLECTION TROUGH

BAFF'LE 'WALL

& \JALK'WAY 'WI f'IREHOSE CONNECTIONS

= = -1

DISCHARGE RA'J '.lATER 'WET 'WELL

& PUMP HOUSE

SLUICING CHANNEL

FORSGREN

ASSOCIATES / P.A.

DIVERsmN

~NEL

... ElR 'WALL

SECTION

TRASH COLLECTIDN TRDUGH (SIZED TO ACCDMODATE BOBCAT DR LOADER

PRELIMINARY INTAKE

FACILITY LAYOUT

FIGURE 8.3