|
<br />~l",!
<br />
<br />lir .... I~ ..
<br />... ....-.:.... ..
<br />. -. ...1.:, ,.". .":,...
<br />.,..., . '.' ,'~~".:r: .
<br />~~~. - ~ . .. .;.. '''~,
<br />":'F' ~.. m.....
<br />
<br />. .- .... ...... ;.::'~ ~.: ...... ." ..-';'. ..=::- t~>, .
<br />. 'Ic.-,;.t':..<LJ~.. 'p' '.- ";-. -c- .. -I:: 0" . '. ,
<br />"':.;,;' ...-."'~ #- '-".- . ;q" ~ -: . . . .'
<br />.';i16-JL..i11 .~~'''' ....'.... ..~.' ,I..'.
<br />...~~..:..-.,., . ~,i" --. II :..-:: .'" ...~ ~': " ~ ~~.~
<br />f.,;O~:"""'"" ....-._.' . - . ... Iii .., Jr.... ':11',. .~'''''''....\.:
<br />
<br />If: ~~~ . ~:f~:'.;~~:__ ; ,_.~.' -!.:~:-..'~" -~~~
<br />. "':....." ~I'-~-_. . ~ .._0 ... .." . ~ '. iI:. ,..:
<br />" .... ."1 . __... ,..., -. . .....1"'-. "~;<P' . . ~'-'.. ~ ..'.. . ...._~...
<br />~ . . ..,.., '. --. ~ "Wi '.. '__
<br />. >>;~~ . ":. ~ " ....... .~... ., '.:" 'L~, 'J.:~1
<br />.,..~-- .~., ", ...... ~
<br />:~. " ,. ". ,.. ~. ~ . '. ;.' .. ~ '.11..;
<br />IJ~ ., ... .
<br />1-- ... , ~,. ,. .: ,~:'~' ~ ' .' .,
<br />. )fI&' "'~ . ~ .f' . ~ . b
<br />
<br />P'.t;:-. .::- :,:~. .-:..'~"'" :"":~4(.'~~~""~/~." .'
<br />. :{".", ,..~..-~ .' . ... . .:...... ~ v. I"~
<br />. ........ M'V.:'.. :.... .. I :...... " .:.(. . __ '... ':' rl 01.-:
<br />
<br />26
<br />
<br />Potential material suppliers expressed in-
<br />terest in the project by replying to an RFP
<br />(request for proposals) published in the
<br />Commerce Business Daily. Twenty propos-
<br />als were accepted, and others are under
<br />consideration for next year. From Novem-
<br />ber 1991 to March 1993, 18 of 20 plarmed
<br />test sections were constructed. To ade-
<br />quately represent constructability and
<br />construction costs, each test section had a
<br />length between 300 and 1000 feet and an
<br />area of about 5,000 ft2. The research pro-
<br />ject has cost $3.2 million to date. The
<br />material suppliers and irrigation districts
<br />have contributed $1.9 million, and Recla-
<br />mation has contributed the remaining $1.3
<br />million.
<br />The 18 completed test sections include:
<br />
<br />- Arnold 1 -Petromat MB-II geocom-
<br />posite (4-mil polyethylene
<br />geomembrane sandwiched between
<br />two layers of geotextile) with 3-inch
<br />shotcrete cover
<br />- Arnold 2 - 30-mil VLDPE (very-low-
<br />density polyethylene) geomembrane
<br />with a geotextile cushion and 3-inch
<br />shotcrete cover
<br />- Arnold 3 - 80-mil exposed HDPE
<br />(high-density polyethylene geomem-
<br />brane)
<br />
<br />
<br />- Arnold 4 - 30-mil PVC (polyvinyl
<br />chloride) geomembrane placed be-
<br />tween two layers of geotextile
<br />- Arnold 5 - 45-mil exposed Hypalon
<br />geomembrane with a geotextile cush-
<br />ion
<br />- Arnold 6 - 36-mil exposed Hypalon
<br />geomembrane with a geotextile cush-
<br />ion
<br />- Arnold 7 - 40-mil PVC geomembranf
<br />with 3-inch Annorfonn grout-filled
<br />mattress cover
<br />- Arnold 8 - 3-inch Armorfonn con-
<br />crete-grout mattress
<br />- Arnold 9 - 60-mil exposed VLDPE
<br />geomembrane with a geotextile cush-
<br />ion and with 3-inch Annorfonn
<br />concrete cover on sideslopes
<br />- Arnold 10 - 60-mil HDPE geomem-
<br />brane with a geotextile cushion and
<br />with 3-inch Armorfonn concrete
<br />cover on sideslopes
<br />- North Unit 1 - (SPUF) sprayed poly-
<br />urethane foam with Futura- flex
<br />coating
<br />- North Unit 2 - SPUF with Geothane
<br />coating
<br />- North Unit 3 - Exposed Tietex geotex-
<br />tile with Geothane coating
<br />- North Unit 4 - Exposed Phillips
<br />geotextile with Geothane coating
<br />
<br />.~ -f'j
<br />,{;4~
<br />-J-' ..'
<br />
<br />'+T
<br />
<br />.......'"'
<br />_ ~,T
<br />;:..I~1c ~ {~ ~,~
<br />~_I- "".
<br />,l-t~
<br />~.,
<br />
<br />-
<br />
<br />This test section has approximately 3 inches of sprayed-in-place polyurethane
<br />foam with a liquid-membrane urethane topcoat for UV protection.
<br />
<br />1
<br />
|