Revised_Specs.pdf

ORANG Repai r Mai nt . Ramp KJAQ162682 Ki ngsl ey Fi el d ANGB Type B- 3 Submi t t al

SECTI ON 31 32 11

SOI L SURFACE EROSI ON CONTROL

08/08

PART 1 GENERAL

1. 1 SUMMARY

The wor k consi st s of f ur ni shi ng and i nst al l i ng t empor ar y and per manent soil sur f ace er osi on cont r ol mat er i al s t o pr event t he pol l ut i on of ai r , wat er , and l and, i ncl udi ng f i ne gr adi ng, bl anket i ng, st apl i ng, mul chi ng, veget at i ve measur es, st r uct ur al measur es, and mi scel l aneous r el at ed wor k, wi t hi n pr oj ect l i mi t s and i n ar eas out s i de t he pr oj ect l i mi t s wher e t he soi l sur f ace i s di st ur bed f r om wor k under t hi s Cont r act at t he desi gnat ed l ocat i ons. Thi s wor k i ncl udes al l necessar y mat er i al s, l abor , super vi s i on and equipment f or i nst al l at i on of a compl et e syst em. Submi t a l i s t i ng of equi pment t o be used f or t he appl i cat i on of er osi on cont r ol mat er i al s.

Coor di nat e t hi s sect i on wi t h t he r equi r ement s of Sect i on 31 00 00 EARTHWORK and Sect i on 32 92 19 SEEDI NG, and Sect i on 32 92 23 SODDI NG. Compl et e backf i l l i ng t he openi ngs i n synt het i c gr i d syst ems and ar t i cul at i ng cel l ul ar concr et e bl ock syst ems a maxi mum 7 days af t er pl acement t o pr ot ect t he mat er i al f r om ul t r avi ol et r adi at i on.

1. 2 MEASUREMENT AND PAYMENT

Not Used.

1. 3 REFERENCES

The publ i cat i ons l i s t ed bel ow f or m a par t of t hi s speci f i cat i on t o t he ext ent r ef er enced. The publ i cat i ons ar e r ef er r ed t o wi t hi n t he t ext by t he basi c desi gnat i on onl y.

ASTM I NTERNATI ONAL ( ASTM)

ASTM D1248 ( 2012) St andar d Speci f i cat i on f or Pol yet hyl ene Pl ast i cs Ext r usi on Mat er i al s f or Wi r e and Cabl e

ASTM D1560 ( 2015) Resi st ance t o Def or mat i on and Cohesi on of Bi t umi nous Mi xt ur es by Means of Hveem Appar at us

ASTM D1777 ( 1996; E 2011; R 2011) Thi ckness of Text i l e Mat er i al s

ASTM D2028/ D2028M ( 2015) Cut back Asphal t ( Rapi d- Cur i ng Type)

ASTM D2844/ D2844M ( 2013) Resi st ance R- Val ue and Expansi on Pr essur e of Compact ed Soi l s

ASTM D3776/ D3776M ( 2009a; R 2017) St andar d Test Met hods f or Mass Per Uni t Ar ea ( Wei ght ) of Fabr i c

ASTM D3787 ( 2016) Bur st i ng St r engt h of Text i l es -

SECTI ON 31 32 11 Page 1

Const ant - Rat e- of - Tr aver se ( CRT) , Bal l Bur st Test

ASTM D3884 ( 2009; R 2017) St andar d Gui de f or Abr asi on Resi st ance of Text i l e Fabr i cs ( Rot ar y Pl at f or m, Doubl e- Head Met hod)

ASTM D4355/ D4355M ( 2014) Det er i or at i on of Geot ext i l es f r om Exposur e t o Li ght , Moi st ur e and Heat i n a Xenon- Ar c Type Appar at us

ASTM D4491/ D4491M ( 2015) St andar d Test Met hods f or Wat er Per meabi l i t y of Geot ext i l es by Per mi t t i v i t y

ASTM D4533/ D4533M ( 2015) St andar d Test Met hod f or Tr apezoi d Tear i ng St r engt h of Geot ext i l es

ASTM D4595 ( 2017) St andar d Test Met hod f or Tensi l e Pr oper t i es of Geot ext i l es by t he Wi de- Wi dt h St r i p Met hod

ASTM D4632/ D4632M ( 2015a) Gr ab Br eaki ng Load and El ongat i on of Geot ext i l es

ASTM D4751 ( 2016) St andar d Test Met hod f or Det er mi ni ng Appar ent Openi ng Si ze of a Geotextile

ASTM D4833/ D4833M ( 2007; E 2013; R 2013) I ndex Punct ur e Resi st ance of Geot ext i l es, Geomembr anes, and Rel at ed Pr oduct s

ASTM D4972 ( 2013) pH of Soi l s

ASTM D5034 ( 2009; R 2017) St andar d Test Met hod f or Br eaki ng St r engt h and El ongat i on of Text i l e Fabr i cs ( Gr ab Test )

ASTM D5035 ( 2011) Br eaki ng For ce and El ongat i on of Text i l e Fabr i cs ( St r i p Met hod)

ASTM D5268 ( 2013) Topsoi l Used f or Landscapi ng Purposes

ASTM D5852 ( 2000; R 2007; E 2014) St andar d Test Met hod f or Er odi bi l i t y Det er mi nat i on of Soi l i n t he Fi el d or i n t he Labor at or y by t he Jet I ndex Met hod

ASTM D6629 ( 2001; E 2012; R 2012) Sel ect i on of Met hods f or Est i mat i ng Soi l Loss by Er osi on

ASTM D698 ( 2012; E 2014; E 2015) Labor at or y Compact i on Char act er i st i cs of Soi l Usi ng St andar d Ef f or t ( 12, 400 f t - l bf / cu. f t .

( 600 kN- m/ cu. m. ) )

ASTM D977 ( 2017) St andar d Speci f i cat i on f or Emul si f i ed Asphal t

SECTI ON 31 32 11 Page 2

U. S. DEPARTMENT OF AGRI CULTURE ( USDA)

AMS Seed Act ( 1940; R 1988; R 1998) Feder al Seed Act

1. 4 SUBMITTALS

Gover nment appr oval i s r equi r ed f or submi t t al s wi t h a " G" desi gnat i on;

submi t t al s not havi ng a " G" desi gnat i on ar e f or i nf or mat i on onl y. When used, a desi gnat i on f ol l owi ng t he " G" desi gnat i on i dent i f i es t he of f i ce t hat wi l l r evi ew t he submi t t al f or t he Gover nment . Submi t t he f ol l owi ng i n accor dance wi t h Sect i on 01 33 00 SUBMI TTAL PROCEDURES:

SD- 01 Pr econst r uct i on Submi t t al s

Wor k Sequence Schedul e; G

Er osi on Cont r ol Pl an; G, AE

SD- 02 Shop Dr awi ngs

Layout ; G, AE

Obst r uct i ons Bel ow Gr ound; G

Seed Est abl i shment Per i od

Mai nt enance Recor d

SD- 03 Pr oduct Dat a

Geosynt het i c Bi nder s; G

Recycl ed Pl ast i c

Wood Cel l ul ose Fi ber

Paper Fi ber

Mul ch Cont r ol Net t i ng and Fi l t er Fabr i c

Wood Hydr aul i c Mul ch; G

Er osi on Cont r ol Bl anket s Type XI

Geot ext i l e Fabr i cs; G

Aggregate

Synt het i c Gr i d Syst ems; G

Ar t i cul at i ng Cel l ul ar Concr et e Bl ock Syst ems; G

Equipment

Er osi on Cont r ol Bl anket s

SD- 06 Test Repor t s

SECTI ON 31 32 11 Page 3

Geosynt het i c Bi nder s

Wood Hydr aul i c Mul ch

Geot ext i l e Fabr i cs

Er osi on Cont r ol Bl anket s

Compr essi ve St r engt h Test i ng

Sand

Gravel

SD- 07 Cer t i f i cat es

Fi l l Mat er i al

Mulch

Wood Hydr aul i c Mul ch

Geot ext i l e Fabr i cs

Geosynt het i c Bi nder s

Synt het i c Soi l Bi nder s

I nst al l er ' s Qual i f i cat i on

Seed

Asphal t Adhesi ve

Tackifier

Wood By- Pr oduct s

Wood Cel l ul ose Fi ber

SD- 10 Oper at i on and Mai nt enance Dat a

Mai nt enance I nst r uct i ons; G

SD- 11 Cl oseout Submi t t al s

Warranty

1. 5 QUALI TY ASSURANCE

1. 5. 1 I nst al l er ' s Qual i f i cat i on

The i nst al l er must be cer t i f i ed by t he manuf act ur er f or t r ai ni ng and exper i ence i nst al l i ng t he mat er i al . Submi t t he i nst al l er ' s company name and addr ess, and/ or cer t i f i cat i on.

1. 5. 2 Er osi on Pot ent i al

Assess pot ent i al ef f ect s of soi l management pr act i ces on soi l l oss i n

SECTI ON 31 32 11 Page 4 accor dance wi t h ASTM D6629. Assess er odi bi l i t y of soi l wi t h domi nant soi l s t r uct ur e l ess t han 2. 8 t o 3. 1 i nches i n accor dance wi t h ASTM D5852.

1. 5. 3 Substitutions

Subst i t ut i ons wi l l not be al l owed wi t hout wr i t t en r equest and appr oval f r om t he Cont r act i ng Of f i cer .

1. 6 DELI VERY, STORAGE, AND HANDLI NG

Pr i or t o del i ver y of mat er i al s, submi t cer t i f i cat es of compl i ance at t est i ng t hat mat er i al s meet t he speci f i ed r equi r ement s. St or e mat er i al s i n desi gnat ed ar eas and as r ecommended by t he manuf act ur er pr ot ect ed f r om t he el ement s, di r ect exposur e, and damage. Do not dr op cont ai ner s f r om t r ucks. Mat er i al must be f r ee of def ect s t hat woul d voi d r equi r ed per f or mance or war r ant y. Del i ver geosynt het i c bi nder s and synt het i c soi l bi nder s i n t he manuf act ur er ' s or i gi nal seal ed cont ai ner s and st or ed i n a secur e ar ea.

a. Fur ni sh er osi on cont r ol bl anket s and geot ext i l e f abr i c i n r ol l s wi t h sui t abl e wr appi ng t o pr ot ect agai nst moi st ur e and ext ended ul t r avi ol et exposur e pr i or t o pl acement . Label er osi on cont r ol bl anket and geot ext i l e f abr i c r ol l s t o pr ovi de i dent i f i cat i on suf f i c i ent f or i nvent or y and qual i t y cont r ol pur poses.

b. Al l synt het i c gr i ds, synt het i c sheet s, and ar t i cul at i ng cel l ul ar concr et e bl ock gr i ds must be sound and f r ee of def ect s t hat woul d i nt er f er e wi t h t he pr oper pl aci ng of t he bl ock or i mpai r t he st r engt h or per manence of t he const r uct i on. Mi nor cr acks i n synt het i c gr i ds and concr et e cel l ul ar bl ock, i nci dent al t o t he usual met hods of manuf act ur e, or r esul t i ng f r om st andar d met hods of handl i ng i n shi pment and del i ver y, wi l l not be deemed gr ounds f or r ej ect i on.

c. I nspect seed upon ar r i val at t he j obsi t e f or conf or mi t y t o speci es and qual i t y . Seed t hat i s wet , mol dy, or bear s a t est dat e f i ve mont hs or ol der , must be r ej ect ed.

1. 7 SCHEDULING

Submi t a const r uct i on wor k sequence schedul e, wi t h t he st at e or l ocal gover nment appr oved er osi on cont r ol pl an a mi ni mum of 30 days pr i or t o st ar t of const r uct i on. The wor k schedul e must coor di nat e t he t i mi ng of l and di st ur bi ng act i v i t i es wi t h t he pr ovi s i on of er osi on cont r ol measur es t o r educe on- si t e er osi on and of f - s i t e sedi ment at i on. Coor di nat e i nst al l at i on of t empor ar y er osi on cont r ol f eat ur es wi t h t he const r uct i on of per manent er osi on cont r ol f eat ur es t o assur e ef f ect i ve and cont i nuous cont r ol of er osi on, pol l ut i on, and sedi ment deposi t i on. I ncl ude a veget at i ve pl an wi t h pl ant i ng and seedi ng dat es and f er t i l i zer , l i me, and mul chi ng r at es. Di st r i but e copi es of t he wor k schedul e and er osi on cont r ol pl an t o s i t e subcont r act or s. Addr ess t he f ol l owi ng i n t he er osi on cont r ol plan :

a. St at ement of er osi on cont r ol and st or mwat er cont r ol obj ect i ves.

b. Descr i pt i on of t empor ar y and per manent er osi on cont r ol , st or mwat er cont r ol , and ai r pol l ut i on cont r ol measur es t o be i mpl ement ed on s i t e.

c. Descr i pt i on of t he t ype and f r equency of mai nt enance act i v i t i es r equi r ed f or t he chosen er osi on cont r ol met hods.

SECTI ON 31 32 11 Page 5

d. Compar i son of pr oposed post - devel opment st or mwat er r unof f condi t i ons wi t h pr edevel opment condi t i ons.

1. 8 WARRANTY

Er osi on cont r ol mat er i al must have a war r ant y f or use and dur abl e condi t i on f or pr oj ect speci f i c i nst al l at i ons. Tempor ar y er osi on cont r ol mat er i al s must car r y a mi ni mum ei ght een mont h war r ant y. Per manent er osi on cont r ol mat er i al s must car r y a mi ni mum t hr ee year war r ant y.

PART 2 PRODUCTS

2. 1 RECYCLED PLASTI C

Submi t i ndi v i dual component and assembl ed uni t st r uct ur al i nt egr i t y t est r esul t s; cr eep t ol er ance; def l ect i on t ol er ance; and ver t i cal l oad t est r esul t s and Li f e- cycl e dur abi l i t y . Recycl ed pl ast i c must cont ai n a mi ni mum 85 per cent of r ecycl ed post - consumer pr oduct . Recycl ed mat er i al must be const r uct ed or manuf act ur ed wi t h a maxi mum 1/ 4 i nch def l ect i on or cr eep i n any member , accor di ng t o ASTM D1248. The component s must be mol ded of ul t r avi ol et ( UV) and col or st abi l i zed pol yet hyl ene. The mat er i al must consi st of a mi ni mum 75 per cent pl ast i c pr of i l e of hi gh- densi t y pol yet hyl ene, l ow- densi t y pol yet hyl ene, and pol ypr opyl ene r aw mat er i al .

The mat er i al must be non- t oxi c and have no di scer ni bl e cont ami nant s such as paper , f oi l , or wood. The mat er i al must cont ai n l ess t han 3 per cent ai r voi ds and must be f r ee of spl i nt er s, chi ps, peel s, buckl i ng, and cr acks.

Mat er i al must be r esi st ant t o def or mat i on f r om sol ar heat gai n.

2. 2 BINDERS

2. 2. 1 Synt het i c Soi l Bi nder s

Cal c i um chl or i de, or ot her st andar d manuf act ur er ' s spr ay- on adhesi ves desi gned f or dust suppr essi on. Submi t cer t i f i cat i on f or bi nder s showi ng EPA r egi st er ed uses, t oxi c i t y l evel s, and appl i cat i on hazar ds.

2. 2. 2 Geosynt het i c Bi nder s

Geosynt het i c bi nder s must be manuf act ur ed i n accor dance wi t h ASTM D1560, ASTM D2844/ D2844M; and must be r ef er r ed t o as pr oduct s manuf act ur ed f or use as modi f i ed emul si ons f or t he pur pose of er osi on cont r ol and soi l s t abi l i zat i on. Emul si ons must be manuf act ur ed f r om al l nat ur al mat er i al s and pr ovi de a har d dur abl e f i ni sh.

2. 3 MULCH

Mul ch must be f r ee f r om weeds, mol d, and ot her del et er i ous mat er i al s.

Mul ch mat er i al s must be nat i ve t o t he r egi on.

2. 3. 1 Straw

St r aw must be st al ks f r om oat s, wheat , r ye, bar l ey, or r i ce, f ur ni shed i n ai r - dr y condi t i on and wi t h a consi st ency f or pl aci ng wi t h commer ci al mul ch- bl owi ng equi pment .

2. 3. 2 Hay

Hay must be nat i ve hay, sudan- gr ass hay, br oomsedge hay, or ot her

SECTI ON 31 32 11 Page 6 her baceous mowi ngs, f ur ni shed i n an ai r - dr y condi t i on sui t abl e f or pl aci ng wi t h commer ci al mul ch- bl owi ng equi pment .

2. 3. 3 Wood Cel l ul ose Fi ber

Wood cel l ul ose f i ber must be 100 per cent t ot al r ecover ed mat er i al s cont ent and must not cont ai n any gr owt h or ger mi nat i on- i nhi bi t i ng f act or s and must be dyed wi t h non- t oxi c, bi odegr adabl e dye an appr opr i at e col or t o f aci l i t at e pl acement dur i ng appl i cat i on. Composi t i on on ai r - dr y wei ght basi s: a mi ni mum 9 t o a maxi mum 15 per cent moi st ur e, and bet ween a mi ni mum

4. 5 t o a maxi mum 6. 0 pH.

2. 3. 4 Paper Fi ber

Paper f i ber mul ch must be 100 per cent post - consumer r ecycl ed news pr i nt t hat i s shr edded f or t he pur pose of mul chi ng seed.

2. 3. 5 Shr edded Bar k

Local l y shr edded mat er i al must be t r eat ed t o r et ar d t he gr owt h of mol d and fungi.

2. 3. 6 Wood By- Pr oduct s

Submi t composi t i on, sour ce, and par t i c l e s i ze. Pr oduct s must be f r ee f r om t oxi c chemi cal s or hazar dous mat er i al . Wood l ocal l y chi pped or gr ound bar k must be t r eat ed t o r et ar d t he gr owt h of mol d and f ungi . Gr adat i on: A maximum 2 i nch wi de by 4 i nch l ong.

2. 3. 7 Coir

Coi r must be manuf act ur ed f r om 100 per cent coconut f i ber cur ed i n f r esh wat er f or a mi ni mum of 6 mont hs.

2. 3. 8 Asphal t Adhesi ve

Asphal t adhesi ve must conf or m t o t he f ol l owi ng: Emul si f i ed asphal t , conf or mi ng t o ASTM D977, Gr ade SS- 1; and cut back asphal t , conf or mi ng t o ASTM D2028/ D2028M, Desi gnat i on RC- 70.

2. 3. 9 Mul ch Cont r ol Net t i ng and Fi l t er Fabr i c

Mul ch cont r ol net t i ng and f i l t er f abr i c must be const r uct ed of l i ght wei ght r ecycl ed pl ast i c , cot t on, or paper or or gani c f i ber . The r ecycl ed pl ast i c must be a woven or nonwoven pol ypr opyl ene, nyl on, or pol yest er cont ai ni ng st abi l i zer s or i nhi bi t or s t o make t he f abr i c r esi st ant t o det er i or at i on f r om UV, and wi t h t he f ol l owi ng pr oper t i es:

Mi ni mum gr ab t ensi l e st r engt h ( TF 25 #1/

ASTM D4632/ D4632M)

180 pounds

Mi ni mum Punct ur e ( TF 25 #4/ ASTM D3787) 75 psi i n t he weakest di r ect i on

Appar ent openi ng si eve si ze mi ni mum 40 and maxi mum 80 ( U. S. Si eve Size)

Mi ni mum Tr apezoi dal t ear st r engt h ( TF 25 #2/

ASTM D4533/ D4533M)

50 pounds

SECTI ON 31 32 11 Page 7

2. 3. 10 Wood Hydr aul i c Mul ch

Wood hydr aul i c mul ch must be made of 100 per cent t ot al r ecover ed mat er i al .

Wood must be nat ur al l y ai r - dr i ed t o a moi st ur e cont ent of 10. 0 per cent , pl us or mi nus 3. 0 per cent . A mi ni mum of 50 per cent of t he f i ber s must be equal t o or gr eat er t han 0. 15 i nch i n l engt h and a mi ni mum of 75 per cent of t he f i ber s must be r et ai ned on a 28 mesh scr een. Hydr aul i c mul ch must have t he f ol l owi ng mi xt ur e char act er i s t i cs:

CHARACTERI STI C ( t ypi cal ) VALUE pH 5.4 + 0. 1

Or gani c Mat t er ( oven dr i ed basi s) per cent 99. 3 wi t hi n + 0. 2

I nor gani c Ash ( oven dr i ed basi s) per cent 0. 7 wi t hi n + 0. 2

Wat er Hol di ng Capaci t y per cent 1, 401

2. 3. 11 Tackifier

Tacki f i er must be a bl ended pol yacr yl i mi de mat er i al wi t h non- i oni c gal act omannan of Gr ami neae endosper m i n powder and cr yst al l i ne f or m wi t h mol ecul ar wei ght s over 250, 000. Tacki f i er must be pr e- packaged i n t he hydr aul i c mul ch at t he r at e of 2 ounces per l b of wood f i ber .

2. 3. 12 Dye

Dye must be a wat er - act i vat ed, gr een col or . Pr e- package dye i n wat er di ssol vabl e packet s i n t he hydr aul i c mul ch.

2. 4 GEOTEXTI LE FABRI CS

Geot ext i l e f abr i cs must be woven of pol yest er f i l ament s f or med i nt o a st abl e net wor k so t hat t he f i l ament s r et ai n t hei r r el at i ve posi t i on t o each ot her . Cont ent must be a mi ni mum of 75 per cent r ecycl ed mat er i al s. Sewn seams must have st r engt h equal t o or gr eat er t han t he geot ext i l e i t sel f .

I nst al l f abr i c t o wi t hst and maxi mum vel oci t y f l ows as r ecommended by t he manuf act ur er . The geot ext i l e must conf or m t o t he f ol l owi ng mi ni mum aver age r ol l val ues:

Property Performance Test Met hod

Weight 264 g/ m2 ASTM D3776/ D3776M

Thickness 0. 635 mm ASTM D1777

Permeability 0. 12 cm/ sec ASTM D4491/ D4491M

Abr asi on Resi st ance, Type ( per cent st r engt h r et ai ned)

58 per cent X 81 per cent ASTM D3884

Tensi l e Gr ab St r engt h 1467 N X 1933 N ASTM D4632/ D4632M

SECTI ON 31 32 11 Page 8

Property Performance Test Met hod

Gr ab El ongat i on 15 per cent X 20 per cent ASTM D4632/ D4632M

Bur st St r engt h 5510 kN/ m2 ASTM D3787

Punct ur e St r engt h 733 N ASTM D4833/ D4833M

Tr apezoi d Tear 533 N X 533 N ASTM D4533/ D4533M

Appar ent Openi ng Si ze 40 US St d Si eve ASTM D4751

UV Resi st ance @ 500 hour s 90 per cent ASTM D4355/ D4355M

2. 5 EROSI ON CONTROL BLANKETS

2. 5. 1 Er osi on Cont r ol Bl anket s Type I

Use Type I bl anket s f or er osi on cont r ol and veget at i on est abl i shment on r oadsi de embankment s, abut ment s, ber ms, shoul der s, and medi an swal es wher e nat ur al veget at i on wi l l pr ovi de l ong t er m st abi l i zat i on. Er osi on cont r ol bl anket s must be a machi ne- pr oduced mat of 100 per cent st r aw. The bl anket must be of consi st ent t hi ckness wi t h t he st r aw evenl y di st r i but ed over t he ent i r e ar ea of t he mat . Cover t he bl anket on t he t op s i de wi t h a phot odegr adabl e pol ypr opyl ene net t i ng havi ng an appr oxi mat e 1/ 2 by 1/ 2 i nch mesh and be sewn t oget her on a maxi mum 1. 5 i nch cent er s wi t h degr adabl e t hr ead. The er osi on cont r ol bl anket must have t he f ol l owi ng pr oper t i es:

Mat er i al Cont ent

Straw 100 per cent wi t h appr oxi mat el y 0. 50 l b/ yd2 wei ght

Netting One si de onl y, l i ght wei ght phot odegr adabl e wi t h appr oxi mat el y 1. 64 l b/ 1, 000 f t 2 wei ght

Thread Degradable

Not e 1: Phot odegr adabl e l i f e a mi ni mum of 2 mont hs wi t h a mi ni mum 90 per cent l i ght penet r at i on. Appl y t o s l opes up t o a maxi mum 3: 1 gr adi ent .

2. 5. 2 Er osi on Cont r ol Bl anket s Type I I

Er osi on cont r ol bl anket s must be a machi ne- pr oduced mat of 100 per cent st r aw. The bl anket must be of consi st ent t hi ckness wi t h t he st r aw evenl y di st r i but ed over t he ent i r e ar ea of t he mat . Cover t he bl anket on t he t op s i de wi t h a pol ypr opyl ene net t i ng havi ng an appr oxi mat e 1/ 2 by 1/ 2 i nch mesh wi t h phot odegr adabl e accel er at or s t o pr ovi de br eakdown of t he net t i ng wi t hi n appr oxi mat el y 45 days, dependi ng upon geogr aphi c l ocat i on and el evat i on. Sew t he bl anket t oget her on a maxi mum 1. 5 i nch cent er s wi t h degr adabl e t hr ead. The er osi on cont r ol bl anket must have t he f ol l owi ng properties:

SECTI ON 31 32 11 Page 9

Mat er i al Cont ent

Straw 100 per cent wi t h appr oxi mat el y 0. 50 l b/ yd2 wei ght

Netting One si de onl y, l i ght wei ght phot odegr adabl e wi t h phot o accel er at or s and approximately 1. 64 l b/ 1, 000 f t 2 wei ght

Thread Degradable

Not e 1: Phot odegr adabl e l i f e a mi ni mum of 10 mont hs wi t h a mi ni mum 90 per cent l i ght penet r at i on. Appl y t o s l opes up t o a maxi mum 3: 1 gr adi ent .

2. 5. 3 Er osi on Cont r ol Bl anket s Type I I I

Type I I I bl anket s must be used f or er osi on cont r ol and veget at i on est abl i shment on r oadsi de embankment s, abut ment s, ber ms, shoul der s, and medi an swal es wher e nat ur al veget at i on wi l l pr ovi de l ong t er m st abi l i zat i on. Er osi on cont r ol bl anket must be a machi ne- pr oduced mat consi st i ng of 70 per cent st r aw and 30 per cent coconut f i ber . The bl anket must be of consi st ent t hi ckness wi t h t he st r aw and coconut f i ber evenl y di st r i but ed over t he ent i r e ar ea of t he mat . Cover t he bl anket on t he t op s i de wi t h heavywei ght phot odegr adabl e pol ypr opyl ene net t i ng havi ng UV addi t i ves t o del ay br eakdown and an appr oxi mat e 5/ 8 by 5/ 8 i nch mesh, and on t he bot t om si de wi t h a l i ght wei ght phot odegr adabl e pol ypr opyl ene net t i ng wi t h an appr oxi mat e 1/ 2 by 1/ 2 i nch mesh. Sew t he bl anket t oget her on 1. 5 inch cent er s wi t h degr adabl e t hr ead. The er osi on cont r ol bl anket must have t he f ol l owi ng pr oper t i es:

Mat er i al Cont ent

Straw 70 per cent by appr oxi mat el y 0. 35 l b/ yd2

Coconut Fiber

30 per cent by appr oxi mat el y 0. 15 l b/ yd2 wei ght

Netting Top si de heavywei ght phot odegr adabl e wi t h UV addi t i ves and appr oxi mat el y 3 l b/ 1, 000 f t 2 wei ght

Bot t om si de l i ght wei ght phot odegr adabl e wi t h appr oxi mat el y 1. 64 l b/ 1, 000 f t 2 wei ght

NOTE: Phot odegr adabl e l i f e a mi ni mum of 10 mont hs wi t h a mi ni mum 90 per cent l i ght penet r at i on. Appl y t o s l opes wi t h a gr adi ent l ess t han 1. 5: 1.

2. 5. 4 Er osi on Cont r ol Bl anket s Type I V

Er osi on cont r ol bl anket must be a machi ne- pr oduced mat of 100 per cent st r aw. The bl anket must be of consi st ent t hi ckness wi t h t he st r aw evenl y di st r i but ed over t he ent i r e ar ea of t he mat . Cover t he bl anket on t he t op and bot t om si des wi t h l i ght wei ght phot odegr adabl e pol ypr opyl ene net t i ng havi ng an appr oxi mat e 1/ 2 by 1/ 2 i nch mesh. Sew t he bl anket t oget her on

1. 5 i nch cent er s wi t h degr adabl e t hr ead. The er osi on cont r ol bl anket must have t he f ol l owi ng pr oper t i es:

SECTI ON 31 32 11 Page 10

Mat er i al Cont ent

Straw 100 per cent wi t h appr oxi mat el y 0. 50 l b/ yd2 wei ght

Netting Bot h si des l i ght wei ght phot odegr adabl e wi t h appr oxi mat el y 1. 64 l b/ 1, 000 f t 2 weight.

Thread Degradable

Not e: Phot odegr adabl e l i f e a mi ni mum of 2 mont hs wi t h a mi ni mum 90 per cent l i ght penet r at i on. Appl y t o s l opes wi t h a gr adi ent of l ess t han 1. 5: 1.

2. 5. 5 Er osi on Cont r ol Bl anket s Type V

Er osi on cont r ol bl anket must be a machi ne- pr oduced mat of 100 per cent st r aw. The bl anket must be of consi st ent t hi ckness wi t h t he st r aw evenl y di st r i but ed over t he ent i r e ar ea of t he mat . Cover t he bl anket on t he t op s i de wi t h pol ypr opyl ene net t i ng havi ng an appr oxi mat e 1/ 2 by 1/ 2 i nch mesh wi t h phot odegr adabl e accel er at or s t o pr ovi de br eakdown of t he net t i ng wi t hi n appr oxi mat el y 45 days, dependi ng upon geogr aphi c l ocat i on and el evat i on. Cover t he bot t om wi t h a pol ypr opyl ene net t i ng havi ng an approximate 1/ 2 by 1/ 2 i nch mesh wi t h phot o accel er at or s. Sew t he bl anket t oget her on 1. 5 i nch cent er s wi t h degr adabl e t hr ead. The er osi on cont r ol bl anket must have t he f ol l owi ng pr oper t i es:

Mat er i al Cont ent

Straw 70 per cent by appr oxi mat el y 0. 35 l b/ yd2

Netting Top si de l i ght wei ght phot odegr adabl e wi t h phot o accel er at or s wi t h approximately 1. 64 l b/ 1, 000 f t 2 wei ght

Bot t om si de l i ght wei ght phot odegr adabl e wi t h phot o accel er at or s and approximately 1. 64 l b/ 1, 000 f t 2 wei ght

NOTE: Phot odegr adabl e l i f e a mi ni mum of 10 mont hs wi t h a mi ni mum 90 per cent l i ght penet r at i on. Appl y t o s l opes up t o a maxi mum 2: 1 gr adi ent .

2. 5. 6 Er osi on Cont r ol Bl anket s Type VI

Er osi on cont r ol bl anket must be a machi ne- pr oduced 100 per cent bi odegr adabl e mat wi t h a 100 per cent st r aw f i ber mat r i x. The bl anket must be of consi st ent t hi ckness wi t h t he st r aw f i ber evenl y di st r i but ed over t he ent i r e ar ea of t he mat . Cover t he bl anket on t he t op s i de wi t h a 100 per cent bi odegr adabl e woven nat ur al or gani c f i ber net t i ng. The net t i ng must consi st of machi ne di r ect i onal st r ands f or med f r om t wo i nt er t wi ned yar ns wi t h cr oss di r ect i onal st r ands i nt er woven t hr ough t he t wi st ed machi ne st r ands ( commonl y r ef er r ed t o as a Leno weave) t o f or m an appr oxi mat e 1/ 2 by 1/ 2 i nch mesh. Sew t he bl anket t oget her wi t h bi odegr adabl e t hr ead on

1. 5 i nch cent er s. The er osi on cont r ol bl anket must have t he f ol l owi ng properties:

SECTI ON 31 32 11 Page 11

Mat er i al Cont ent

Matrix 100 per cent st r aw f i ber wi t h appr oxi mat el y 0. 50 l b/ yd2 wei ght

Netting One si de onl y, Leno woven 100 per cent bi odegr adabl e nat ur al or gani c f i ber

Weight approximately 9. 3 l b/ 1, 000 f t

Thread Biodegradable

NOTE: Phot odegr adabl e l i f e a mi ni mum of 10 mont hs wi t h a mi ni mum 90 Per cent l i ght penet r at i on. Appl y t o s l opes up t o a maxi mum 2: 1 gr adi ent .

2. 5. 7 Er osi on Cont r ol Bl anket s Type VI I

Er osi on cont r ol bl anket must be a machi ne- pr oduced 100 per cent bi odegr adabl e mat wi t h an her baceous st r aw f i ber mat r i x. The bl anket must be of consi st ent t hi ckness wi t h t he st r aw evenl y di st r i but ed over t he ent i r e ar ea of t he mat . Cover t he bl anket on t he t op and bot t om si des wi t h 100 per cent bi odegr adabl e woven nat ur al f i ber net t i ng. The net t i ng must consi st of machi ne di r ect i onal st r ands f or med f r om t wo i nt er t wi ned yar ns wi t h cr oss di r ect i onal st r ands i nt er woven t hr ough t he t wi st ed machi ne st r ands ( commonl y r ef er r ed t o as a Leno weave) t o f or m an appr oxi mat e 1/ 2 by 1/ 2 i nch mesh. Sew t he bl anket t oget her wi t h bi odegr adabl e t hr ead on

1. 5 i nch cent er s. The bl anket must have t he f ol l owi ng pr oper t i es:

Mat er i al Cont ent

Straw 100 per cent st r aw f i ber wi t h appr oxi mat el y 0. 50 l b/ yd2 wei ght

Netting Top and bot t om si des, Leno woven 100 per cent bi odegr adabl e nat ur al or gani c f i ber wi t h appr oxi mat el y 9. 3 l b/ 1, 000f t 2 wei ght

Thread Biodegradable

Not e: Phot odegr adabl e l i f e a mi ni mum of 18 mont hs wi t h a mi ni mum 90 per cent l i ght penet r at i on. Appl y t o s l opes up t o a maxi mum 1. 5: 1 gr adi ent .

2. 5. 8 Er osi on Cont r ol Bl anket s Type VI I I

Er osi on cont r ol bl anket must be a machi ne- pr oduced 100 per cent bi odegr adabl e mat wi t h a 70 per cent her baceous st r aw and 30 per cent coconut f i ber bl end mat r i x. The bl anket must be of consi st ent t hi ckness wi t h t he st r aw and coconut f i ber evenl y di st r i but ed over t he ent i r e ar ea of t he mat . Cover t he bl anket on t he t op and bot t om si des wi t h 100 per cent bi odegr adabl e woven nat ur al or gani c f i ber net t i ng. The net t i ng must consi st of machi ne di r ect i onal st r ands f or med f r om t wo i nt er t wi ned yar ns wi t h cr oss di r ect i onal st r ands i nt er woven t hr ough t he t wi st ed machi ne st r ands ( commonl y r ef er r ed t o as a Leno weave) t o f or m an appr oxi mat e 1/ 2 by 1/ 2 i nch mesh. Sew t he bl anket t oget her wi t h bi odegr adabl e t hr ead on

SECTI ON 31 32 11 Page 12

1. 5 i nch cent er s. St r aw/ Coconut f i ber er osi on cont r ol bl anket must have t he f ol l owi ng pr oper t i es:

Mat er i al Cont ent

Matrix 70 per cent st r aw f i ber wi t h appr oxi mat el y 0. 35 l b/ yd2 wei ght . 30 per cent coconut f i ber cur ed i n f r esh wat er wi t h appr oxi mat el y 0. 15 l b/ yd2 wei ght

Netting Bot h si des woven 100 per cent bi odegr adabl e nat ur al or gani c f i ber wi t h approximately 9. 3 l bs/ 1, 000 f t 2 wei ght

Thread Biodegradable

Not e: Phot odegr adabl e l i f e a mi ni mum of 24 mont hs wi t h a mi ni mum 90 per cent l i ght penet r at i on. Appl y t o s l opes up t o a maxi mum 1. 5: 1 gr adi ent .

2. 5. 9 Er osi on Cont r ol Bl anket s Type I X ( Tur f Rei nf or cement Mat )

Per manent er osi on cont r ol / t ur f r ei nf or cement mat i s const r uct ed of 100 per cent coconut f i ber st i t ch bonded bet ween a heavy dut y UV st abi l i zed bot t om net , and a heavy dut y UV st abi l i zed cuspat ed ( cr i mped) mi ddl e net t i ng over l ai d wi t h a heavy dut y UV st abi l i zed t op net . The cuspat ed net t i ng f or ms pr omi nent c l osel y spaced r i dges acr oss t he ent i r e wi dt h of t he mat . The t hr ee net t i ngs ar e st i t ched t oget her on 1. 5 i nch cent er s wi t h UV st abi l i zed pol ypr opyl ene t hr ead t o f or m a per manent t hr ee di mensi onal st r uct ur e. The f ol l owi ng l i s t cont ai ns f ur t her physi cal pr oper t i es of t he t ur f er osi on cont r ol mat .

Property Test Met hod Value

Gr ound Cover I mage Anal ysi s 93 per cent

Thickness ASTM D1777 0. 63 i n

Mass per Uni t Ar ea ASTM D3776/ D3776M 0. 92 l b/ sy

Tensi l e St r engt h ASTM D5035 480 l b/ f t

Elongation ASTM D5035 15 per cent

Tensi l e St r engt h ASTM D5035 960 l b/ f t

Elongation ASTM D5035 31 per cent

Tensi l e St r engt h ASTM D5034 177 l bs

Elongation ASTM D5034 22 per cent

Resiliency ASTM D1777 gr eat er t han 80 per cent

SECTI ON 31 32 11 Page 13

Property Test Met hod Value

UV St abi l i t y* ASTM D4355/ D4355M 151 l bs 86 per cent

Col or ( per manent net ) UV Bl ack

Porosity(permanent net)Calculated gr eat er t han 95 per cent

Mi ni mum Fi l ament Measur ed 0. 03 i n

Di amet er ( per manent net ) 0. 03 i n

NOTE 1: * ASTM D5034 Tensi l e St r engt h and per cent St r engt h Ret ent i on of mat er i al af t er 1000 hour s of exposur e i n Xenon- Ar c Weat her omet er

NOTE 2: Phot odegr adabl e l i f e a mi ni mum of 36 mont hs wi t h a mi ni mum 90 per cent l i ght penet r at i on. Appl y t o s l opes up t o a maxi mum 1: 1 gr adi ent

2. 5. 10 Er osi on Cont r ol Bl anket s Type X ( Tur f Rei nf or cement Mat )

Per manent er osi on cont r ol / t ur f r ei nf or cement mat must be const r uct ed of 100 per cent UV st abi l i zed hi gh deni er pol ypr opyl ene f i ber sewn bet ween a bl ack UV st abi l i zed 1/ 2 i nch mesh pol ypr opyl ene net t i ng on t he t op 5 l bs/ 1000 squar e f t and a bl ack UV st abi l i zed 5/ 8 i nch mesh pol ypr opyl ene net t i ng on t he bot t om 3 l bs/ 1000 squar e f t wi t h pol ypr opyl ene t hr ead. The mat must be r esi st ant t o phot o and chemi cal degr adat i on. The f ol l owi ng l i s t cont ai ns f ur t her physi cal pr oper t i es of t he t ur f r ei nf or cement mat .

Property Test Met hod Value

Thickness ASTM D1777 0. 56 i n

Mass per Uni t Ar ea ASTM D3776/ D3776M 11. 2 oz/ sq yd

Tensi l e St r engt h ASTM D4632/ D4632M 35. 2 l bs

Elongation ASTM D4632/ D4632M 25. 5 per cent

Tensi l e St r engt h ASTM D4595 259. 2 l bs/ f t

Elongation ASTM D4595 20. 9 per cent

Tensi l e St r engt h ASTM D5035 300 l bs/ f t

Elongation ASTM D5035 51 per cent

Tensi l e St r engt h ASTM D5034 89 l bs

Elongation ASTM D5034 21 per cent

Resiliency 100 PSI - 3 cycl es 94 per cent

UV St abi l i t y* ASTM D4355/ D4355M 81* l bs 90* per cent

SECTI ON 31 32 11 Page 14

Property Test Met hod Value

NOTE 1: * ASTM D5034 Tensi l e St r engt h and per cent St r engt h Ret ent i on of mat er i al af t er 1000 hour s of exposur e i n Xenon- Ar c Weat her omet er

NOTE 2: Phot odegr adabl e l i f e a mi ni mum of 36 mont hs wi t h a mi ni mum 90 per cent l i ght penet r at i on. Appl y t o s l opes up t o a maxi mum 1: 1 gr adi ent

2. 5. 11 Er osi on Cont r ol Bl anket s Type XI ( Re- veget at i on Mat )

Seed- i ncor por at ed bl anket opt i on must consi st of 2- pl y 100 per cent r ecycl ed, unbl eached, cel l ul ose t i ssue. Uni f or ml y di st r i but e a seed mi x upon t he bot t om pl y of cel l ul ose t i ssue and f ul l y over l ai d wi t h a t op cel l ul ose pl y t o pr ovi de compl et e envel opment of t he seed l ayer . Sew t he seed- i ncor por at ed cel l ul ose medi um t o t he bot t om si de of t he speci f i ed er osi on cont r ol bl anket .

Mat er i al Cont ent

Top Pl y 1- pl y 100 per cent r ecycl ed unbl eached cel l ul ose t i ssue wi t h appr oxi mat el y

4. 3 l bs/ 1, 000 f t 2 wei ght

Seed Kent ucky Bl uegr ass 0. 033 l bs/ yd2 ( 160 l bs/ acr e)

Per enni al Ryegr ass 0. 017 l bs/ yd2 ( 80 l bs/ acr e)

Bot t om Pl y 1- pl y r ecycl ed unbl eached cel l ul ose i ssue wi t h appr oxi mat el y 4. 3 l bs/ ( 1, 000 f t 2) wei ght

NOTE: Phot odegr adabl e l i f e a mi ni mum of 36 mont hs wi t h a mi ni mum 90 per cent l i ght penet r at i on. Appl y t o s l opes up t o a mi ni mum 1: 1 gr adi ent .

2. 5. 12 Er osi on Cont r ol Bl anket s Type XI I ( Compost Mat )

Compost bl anket must consi st of a l ayer of 100 per cent bi obased st abl e and mat ur e compost uni f or ml y di st r i but ed t o a dept h of 3/ 4 t o 3 i nches al ong sl opes wi t h er osi on pot ent i al . Compost must encour age pl ant gr owt h and seed must be appl i ed f ol l owi ng compost appl i cat i on. The bl anket must have t he f ol l owi ng pr oper t i es:

Parameter Range

Par t i c l e s i ze 3/ 8- 1/ 2 i nch si eve and 2- 3 i nch si eve ( r at i o = 3: 1)

Moi st ur e cont ent 20 - 50 per cent

Sol ubl e sal t 3. 0 - 6. 0 mmhos/ cm

Or gani c mat t er 40 - 70 per cent pH 6. 0 - 8. 0

Ni t r ogen cont ent 0. 5 - 2. 0 per cent

SECTI ON 31 32 11 Page 15

Parameter Range

Human made i ner t s 0. 0 - 1. 0 per cent

2. 5. 13 Seed

Submi t c l assi f i cat i on, bot ani cal name, common name, per cent pur e l i ve seed, mi ni mum per cent ger mi nat i on and har d seed, maxi mum per cent weed seed cont ent , and dat e t est ed.

2. 5. 13. 1 Seed Cl assi f i cat i on

Pr ovi de St at e- cer t i f i ed nat i ve seed mi x of t he l at est season' s cr op i n or i gi nal seal ed packages bear i ng t he pr oducer ' s guar ant eed anal ysi s f or per cent ages of mi xt ur e, pur i t y, ger mi nat i on, har d seed, weed seed cont ent , and i ner t mat er i al . Conf or m l abel s t o t he AMS Seed Act and appl i cabl e st at e seed l aws. Submi t t he cal endar t i me f or Seed Est abl i shment Per i od.

When t her e i s mor e t han one seed est abl i shment per i od, t he boundar i es of t he seeded ar ea cover ed f or each per i od must be descr i bed.

2. 5. 13. 2 Per manent Seed Speci es and Mi xt ur es

Pr opor t i on per manent seed speci es and mi xt ur es by wei ght .

2. 5. 13. 3 Quality

Weed seed must be l ess t han 1 per cent by wei ght of t he t ot al mi xt ur e.

2. 5. 14 Staking

St akes must be 100 per cent bi odegr adabl e manuf act ur ed f r om pl ast i c or wood and must be desi gned t o saf el y and ef f ect i vel y secur e er osi on cont r ol bl anket s f or t empor ar y or per manent appl i cat i ons. The bi odegr adabl e st ake must be f ul l y degr adabl e by bi ol ogi cal act i v i t y wi t hi n a r easonabl e t i me f r ame. The bi o- pl ast i c r esi n used i n pr oduct i on of t he bi odegr adabl e st ake must consi st of pol y l act i de, a nat ur al , compl et el y bi odegr adabl e subst ance der i ved f r om r enewabl e agr i cul t ur al r esour ces. The bi odegr adabl e st ake must exhi bi t ampl e r i gi di t y t o enabl e bei ng dr i ven i nt o har d gr ound, wi t h suf f i c i ent f l exi bi l i t y t o r esi st shat t er i ng. Ser r at e t he bi odegr adabl e st ake on t he l eg t o i ncr ease r esi st ance t o pul l - out f r om t he soi l . The bi odegr adabl e st ake must have t he f ol l owi ng di mensi ons: 1" x2" mi ni mum.

2. 5. 15 Staples

St apl es must be as r ecommended by t he manuf act ur er .

2. 6 SYNTHETI C GRI D AND SHEET SYSTEMS

Synt het i c gr i d and sheet syst ems must be f or med of r ecycl ed pl ast i c i n accor dance wi t h par agr aph RECYCLED PLASTI CS and have i nt er l ocki ng component s t o f or m a uni f or m under l ayment or st r at a t o r ecei ve f i l l .

2. 7 SEDI MENT FENCI NG

Wood or bur l ap.

SECTI ON 31 32 11 Page 16

2. 8 COMPOST FI LTER BERMS

Compost ber ms must consi st of 100 per cent bi obased t r apezoi dal - shaped compost pi l es ar r anged acr oss s l opes. Ber ms must have t he f ol l owi ng properties:

Parameter Range

Par t i c l e s i ze 3/ 8- 1/ 2 i nch si eve and 2- 3 i nch si eve ( r at i o = 1: 1)

Moi st ur e cont ent 20 - 50 per cent

Sol ubl e sal t 4. 0 - 6. 0 mmhos/ cm

Or gani c mat t er 40 - 70 per cent pH 6. 0 - 8. 0

Ni t r ogen cont ent 0. 5 - 2. 0 per cent

Human made i ner t s 0. 0 - 1. 0 per cent

Size 2 f eet H x 2 - 3 f eet W at t op, at l east 4 f eet W at base

2. 9 AGGREGATE

Aggr egat e must be of f s i t e mat er i al gener at ed f r om gr adi ng and demol i t i on oper at i ons, as avai l abl e. Coar se aggr egat e must cont ai n a mi ni mum of 25 per cent r ecycl ed por cel ai n, st one, or ot her r ecycl ed mat er i al conf or mi ng t o r equi r ement s of t he mi x desi gn. Cr ushed r ock must be cr ushed r un bet ween a minimum 6 i nches and a maxi mum 2 i nches. Gr avel must be r i ver r un bet ween a mi ni mum 6 i nches and a maxi mum 2 i nches. Submi t s i eve t est r esul t s f or both gravel and sand . Sand must be uni f or ml y gr aded.

2. 10 WATER

Unl ess ot her wi se di r ect ed, wat er i s t he r esponsi bi l i t y of t he Cont r act or .

Wat er must be potable or suppl i ed by an exi st i ng i r r i gat i on syst em.

PART 3 EXECUTI ON

3. 1 WEATHER CONDI TI ONS

Per f or m er osi on cont r ol oper at i ons under f avor abl e weat her condi t i ons; when excessi ve moi st ur e, f r ozen gr ound or ot her unsat i s f act or y condi t i ons pr evai l , t he wor k must be st opped as di r ect ed. When speci al condi t i ons war r ant a var i ance t o ear t hwor k oper at i ons, submi t a r evi sed const r uct i on schedul e f or appr oval . Do not appl y er osi on cont r ol mat er i al s i n adver se weat her condi t i ons whi ch coul d af f ect t hei r per f or mance.

SECTI ON 31 32 11 Page 17

3. 1. 1 Fi ni shed Gr ade

Pr ovi de condi t i on of f i ni sh gr ade st at us pr i or t o i nst al l at i on, l ocat i on of under gr ound ut i l i t i es and f aci l i t i es. Ver i f y t hat f i ni shed gr ades ar e as i ndi cat ed on t he dr awi ngs; compl et e f i ni sh gr adi ng and compact i on i n accor dance wi t h Sect i on 31 00 00 EARTHWORK, pr i or t o t he commencement of t he wor k. Ver i f y and mar k t he l ocat i on of under gr ound ut i l i t i es and f aci l i t i es i n t he ar ea of t he wor k. Repai r damage t o under gr ound ut i l i t i es and f aci l i t i es at t he Cont r act or ' s expense.

3. 1. 2 Pl acement of Er osi on Cont r ol Bl anket s

Bef or e pl aci ng t he er osi on cont r ol bl anket s, ensur e t he subgr ade has been gr aded smoot h; has no depr essed, voi d ar eas; i s f r ee f r om obst r uct i ons, such as t r ee r oot s, pr oj ect i ng st ones or ot her f or ei gn mat t er . Ver i f y t hat mesh does not i ncl ude i nvasi ve speci es. Vehi c l es wi l l not be per mi t t ed di r ect l y on t he bl anket s.

3. 1. 3 Synt het i c Gr i d

Bef or e pl aci ng t he gr i d syst em, ensur e t hat t he subgr ade has been pr oper l y gr ubbed of l ar ge r oot s and r ocks; compact ed; has been gr aded smoot h; has no depr essed, voi d, sof t or uncompact ed ar eas; i s f r ee f r om obst r uct i ons, such as t r ee r oot s, pr oj ect i ng st ones or ot her f or ei gn mat t er ; and has been seeded.

3. 1. 4 Concr et e Cel l ul ar Bl ock

Bef or e pl aci ng geot ext i l e f abr i c under cel l ul ar bl ock, ensur e t hat t he subgr ade has been pr oper l y compact ed; has been gr aded smoot h; has no depr essed, voi d, sof t or uncompact ed ar eas; i s f r ee f r om obst r uct i ons, such as t r ee r oot s, pr oj ect i ng st ones or ot her f or ei gn mat t er ; and has been seeded. Compact subgr ade compact i on t o at l east 90 per cent of t he maxi mum dr y densi t y at opt i mum moi st ur e cont ent , as det er mi ned by ASTM D698, wi t h a t ol er ance of pl us or mi nus 1 i nch of t he desi gn el evat i on.

3. 2 SI TE PREPARATI ON

3. 2. 1 Soi l Test

Test soi l i n accor dance wi t h ASTM D5268 and ASTM D4972 f or det er mi ni ng t he par t i c l e s i ze and mechani cal anal ysi s. Sampl e col l ect i on onsi t e must be r andom over t he ent i r e s i t e. The t est must det er mi ne t he soi l par t i c l e s i ze as compat i bl e f or t he speci f i ed mat er i al .

3. 2. 2 Layout

Submi t scal e dr awi ngs def i ni ng ar eas t o r ecei ve r ecommended mat er i al s as r equi r ed by f eder al , st at e or l ocal r egul at i ons. Er osi on cont r ol mat er i al l ocat i ons may be adj ust ed t o meet f i el d condi t i ons. When soi l t est s r esul t i n unaccept abl e par t i c l e s i zes, submi t a shop dr awi ng i ndi cat i ng t he cor r ect i ve measur es.

3. 2. 3 Pr ot ect i ng Exi st i ng Veget at i on

When t her e ar e est abl i shed l awns i n t he wor k ar ea, t he t ur f must be cover ed and/ or pr ot ect ed or r epl aced af t er const r uct i on oper at i ons. I dent i f y exi st i ng t r ees, shr ubs, pl ant beds, and l andscape f eat ur es t hat ar e t o be pr eser ved on s i t e by appr opr i at e t ags and bar r i cade wi t h r eusabl e, SECTI ON 31 32 11 Page 18 hi gh- vi s i bi l i t y f enci ng al ong t he dr i pl i ne. Mi t i gat e damage t o exi st i ng t r ees at no addi t i onal cost t o t he Gover nment . Damage must be assessed by a st at e cer t i f i ed ar bor i st or ot her appr oved pr of essi onal usi ng t he Nat i onal Ar bor i s t Associ at i on' s t r ee val uat i on gui del i ne.

3. 2. 4 Obst r uct i ons Bel ow Gr ound

When obst r uct i ons bel ow gr ound af f ect t he wor k, submi t shop dr awi ngs showi ng pr oposed adj ust ment s t o pl acement of er osi on cont r ol mat er i al f or approval.

3. 3 INSTALLATION

I mmedi at el y st abi l i ze exposed soi l usi ng f abr i c, mul ch, compost , and seed.

St abi l i ze ar eas f or const r uct i on access i mmedi at el y as speci f i ed i n t he par agr aph Const r uct i on Ent r ance. I nst al l pr i nci pal sedi ment basi ns and t r aps bef or e any maj or s i t e gr adi ng t akes pl ace. Pr ovi de addi t i onal sedi ment t r aps and sedi ment f ences as gr adi ng pr ogr esses. Pr ovi de i nl et and out l et pr ot ect i on at t he ends of new dr ai nage syst ems. Remove t empor ar y er osi on cont r ol measur es at t he end of const r uct i on and pr ovi de per manent seedi ng.

3. 3. 1 Const r uct i on Ent r ance

Unl ess shown ot her wi se, pr ovi de a mi ni mum of 6 i nches t hi ck, at poi nt s of vehi cul ar i ngr ess and egr ess on t he const r uct i on s i t e. Const r uct i on ent r ances must be c l ear ed and gr ubbed, and t hen excavat ed a mi ni mum of 3 inches pr i or t o pl acement of t he f i l t er f abr i c and aggr egat e. The aggr egat e must be pl aced i n a manner t hat wi l l pr event damage and movement of t he f abr i c. Pl ace f abr i c i n one pi ece, wher e possi bl e. Over l ap f abr i c j oi nt s a mi ni mum of 12 i nches.

3. 3. 2 Compost Fi l t er Ber ms

Pl ace compost f i l t er ber m uncompact ed on bar e soi l as i ndi cat ed on dr awi ngs, par al l el t o base of s l ope, and accor di ng t o manuf act ur er r ecommendat i ons. Pl ace second ber m i n t he same manner at t op of s l ope par al l el t o f i r s t ber m. When no l onger r equi r ed, ber m mat er i al may be l ef t t o decompose nat ur al l y , or di st r i but ed over an adj acent ar ea f or use as a soi l amendment or gr ound cover .

3. 3. 3 Synt het i c Bi nder s

Appl y synt het i c bi nder s heavi est at edges of ar eas and at cr est s of r i dges and banks t o pr event di spl acement . Appl y bi nder s t o t he r emai nder of t he ar ea evenl y or as r ecommended by t he manuf act ur er .

3. 3. 4 Seeding

When seedi ng i s r equi r ed pr i or t o i nst al l i ng mul ch on synt het i c gr i d syst ems ver i f y t hat seedi ng wi l l be compl et ed i n accor dance wi t h Sect i ons 31 00 00 EARTHWORK and 32 92 19 SEEDI NG.

3. 3. 5 Mul ch I nst al l at i on

I nst al l mul ch i n t he ar eas i ndi cat ed. Appl y mul ch evenl y at t he r at e of 2 Squar e per yar d.

SECTI ON 31 32 11 Page 19

3. 3. 6 Mul ch Cont r ol Net t i ng

Net t i ng may be st apl ed over mul ch accor di ng t o manuf act ur er ' s recommendations.

3. 3. 7 Mechani cal Anchor

Mechani cal anchor must be a V- t ype- wheel l and packer ; a scal l oped- di sk l and packer desi gned t o f or ce mul ch i nt o t he soi l sur f ace; or ot her sui t abl e equipment.

3. 3. 8 Asphal t Adhesi ve Tacki f i er

Asphal t adhesi ve t acki f i er must be spr ayed at a r at e bet ween 10 t o 13 gal l ons/ 1000 squar e f eet . Do not compl et el y excl ude sunl i ght f r om penet r at i ng t o t he gr ound sur f ace.

3. 3. 9 Non- Asphal t i c Tacki f i er

Appl y hydr ophi l i c col l oi d at t he r at e r ecommended by t he manuf act ur er , usi ng hydr aul i c equi pment sui t abl e f or t hor oughl y mi xi ng wi t h wat er . Appl y a uni f or m mi xt ur e over t he ar ea.

3. 3. 10 Asphal t Adhesi ve Coat ed Mul ch

Hay or st r aw mul ch may be spr ead si mul t aneousl y wi t h asphal t adhesi ve appl i ed at a r at e bet ween 10 t o 13 gal l ons/ 1000 squar e f eet , usi ng power mul ch equi pment equi pped wi t h sui t abl e asphal t pump and nozzl e. Appl y t he adhesi ve- coat ed mul ch evenl y over t he sur f ace. Do not compl et el y excl ude sunl i ght f r om penet r at i ng t o t he gr ound sur f ace.

3. 3. 11 Wood Cel l ul ose Fi ber , Paper Fi ber , and Recycl ed Paper

Appl y wood cel l ul ose f i ber , paper f i ber , or r ecycl ed paper as par t of t he hydr aul i c mul ch oper at i on.

3. 3. 12 Hydr aul i c Mul ch Appl i cat i on

3. 3. 12. 1 Unseeded Ar ea

I nst al l hydr aul i c mul ch as i ndi cat ed and i n accor dance wi t h manuf act ur er ' s r ecommendat i ons. Mi x hydr aul i c mul ch wi t h wat er at t he r at e r ecommended by t he manuf act ur er f or t he ar ea t o be cover ed. Mi x i ng must be done i n equi pment manuf act ur ed speci f i cal l y f or hydr aul i c mul chi ng wor k, i ncl udi ng an agi t at or i n t he mi xi ng t ank t o keep t he mul ch evenl y di sbur sed.

3. 3. 12. 2 Seeded Ar ea

For dr i l l or br oadcast seeded ar eas, appl y hydr aul i c mul ch evenl y at t he r at e of 1 l b per squar e yar d. For hydr aul i c seeded ar eas, appl y mul ch at t he r at e of 2 l b per squar e yar d wi t h t he seed and f er t i l i zer , and at t he r at e of 1 l b per squar e yar d i n a second appl i cat i on of mul ch onl y.

3. 3. 13 Er osi on Cont r ol Bl anket s

a. I nst al l er osi on cont r ol bl anket s as i ndi cat ed and i n accor dance wi t h manuf act ur er ' s r ecommendat i ons. The ext ent of er osi on cont r ol bl anket s must be as i ndi cat ed.

SECTI ON 31 32 11 Page 20

b. Or i ent er osi on cont r ol bl anket s i n ver t i cal st r i ps and anchor ed wi t h st apl es, as i ndi cat ed. Abut adj acent st r i ps t o al l ow f or i nst al l at i on of a common r ow of st apl es. Over l ap hor i zont al j oi nt s bet ween er osi on cont r ol bl anket s suf f i c i ent l y t o accommodat e a common r ow of st apl es wi t h t he uphi l l end on t op.

c. Wher e exposed t o over l and sheet f l ow, l ocat e a t r ench at t he uphi l l t er mi nat i on. St apl e t he er osi on cont r ol bl anket t o t he bot t om of t he t r ench. Backf i l l and compact t he t r ench as r equi r ed.

d. Wher e t er mi nat i ng i n a channel cont ai ni ng an i nst al l ed bl anket , t he er osi on cont r ol bl anket must over l ap i nst al l ed bl anket suf f i c i ent l y t o accommodat e a common r ow of st apl es.

3. 3. 14 Synt het i c Sheet Syst em

Anchor synt het i c sheet syst ems i n accor dance wi t h t he manuf act ur er ' s r ecommendat i on. Pl ace syst ems on a wel l gr aded sur f ace and t hen backf i l l , a maxi mum seven days af t er pl acement , t o pr ot ect t he mat er i al f r om ul t r avi ol et r adi at i on. I ncl ude cont i guous per i met er t er mi nat i on t r enches as t he i nst al l at i on pr ogr esses.

3. 3. 14. 1 Sheet Syst em Reveget at i on

For ar eas not r equi r i ng r e- veget at i on, backf i l l openi ngs t o gr ade wi t h wel l graded f i l l mat er i al and sur f ace pr epar ed f or f i ni sh as i ndi cat ed on t he dr awi ngs. For ar eas r equi r i ng r e- veget at i on, backf i l l openi ngs usi ng wel l gr aded f i l l and t opsoi l as i ndi cat ed on t he dr awi ngs.

3. 3. 14. 2 Sheet Syst em Gr i ds

Each pai r of gr i ds must cover gr ade wi t hout gaps or open spaces bet ween t hem. Pr ovi de 100 per cent cover age of t he ar ea wi t h t he cel l s backf i l l ed.

3. 3. 14. 3 Sheet Syst em Seedi ng

I nst al l seed i n accor dance wi t h Sect i on 32 92 19 SEEDI NG.

3. 3. 14. 4 Gr i d Syst em Gr i ds

Anchor synt het i c gr i d syst ems i n accor dance wi t h t he manuf act ur er ' s r ecommendat i on. Pl ace i nt er l ocki ng gr i d syst ems on wel l gr aded sur f ace.

Compl et e t he backf i l l i ng of openi ngs a maxi mum 7 days af t er pl acement t o pr ot ect t he mat er i al f r om ul t r avi ol et r adi at i on. As t he i nst al l at i on pr ogr esses, backf i l l i ng must i ncl ude cont i guous per i met er t er mi nat i on trenches.

3. 3. 15 Grids

3. 3. 15. 1 Gr i d Syst em Reveget at i on

For ar eas not r equi r i ng r e- veget at i on, backf i l l openi ngs wi t h a mi ni mum 1/ 2 inch nomi nal s i ze cr ushed r ock, t o a mi ni mum 2 i nch dept h.

3. 3. 15. 2 Synt het i c Gr i ds

Each pai r of gr i ds must cover gr ade wi t hout gaps or open spaces bet ween t hem.