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ORD 2678
ORDINAI*4CE NTO . � t�o� AN ORDINANCE adopting revisions to the Camas Comprehensive Plan Map and the, City of Camas Zoning Map and adopting the Comprehensive Stormwater Drainage Plan . WHEREAS , the City of Camas has heretofore adopted a Comprehensive Plan and Comprehensive Land Use Map as required by the provisions of RCW 36 . 70A , Revised Code of Washington , the Growth Management Act , and WHEREAS , under Chapter 36 . 70A , Revised Code of Washington , the City is required annually to consider amendments to the land use element of the Comprehensive Plan and associated rezones , and WHEREAS , the Planning Commission has conducted a public hearing on the requests for revisions submitted to the City , and has forwarded its recommendation to the City Council , and WHEREAS , the City Council has conducted a public hearing on the requests for revisions ., NOW , THEREFORE , THE COUNCIL OF THE CITY OF CAMAS DO ORDAIN AS FOLLOWS * Section I A request from property owners , Daley , MacDonald & Mackay , proposed to change the Comprehensive Plan and Zoning designation for three contiguous parcels , located north of NW 18th Avenue and west of NW Brady Road , with a combined 28 . 19 acres . The request is to amend the Comprehensive Plan and Zoning from Light Industrial /Business Park ( LI/BP ) to a Comprehensive Plan designation of Industrial with an associated Zoning of Business Park ( BP ) . The City Council hereby adopts the recommendation of Planning Commission , and directs the Community Development Director to amend the Camas Comprehensive Plan map to designate the 28 . 19 acres as Industrial . The Community Development Director is further directed to amend the Camas Zoning map to designate the 28 . 19 acres as Business Park . Section II A request from eleven property owners , collectively known as Lacamas Northshore , to change the Comprehensive Plan and Zoning Designation of their contiguous 20 parcels , which are located north of Lacamas Lake to the northern and eastern city limits , for a combined 460 acres (refer to Table 1 ) . The request is to amend the Comprehensive Plan and Zoning from Light Ordinance No . Page - 2 Industrial/Business Park (LI/BP ) to the following Comprehensive Plan designations : Industrial for 314 . 77 acres ; Multi - family High for 59 . 86 acres ; Multi - family Low for 35 . 62 acres ; Single . family Medium for 40 acres ; Commercial for 4 . 48 acres ; and Open Space for 5 . 60 acres . The request is to amend the 460 acres with the following associated zoning designations : Business Park for 314 . 77 acres ; Multi - family - 18 ( MF - 18 ) for 59 . 86 acres ; Multi - family 10 ( MF - 10 ) for 35 . 62 acres ; Residential - 7 , 500 ( R- 7 . 5 ) for 40 acres ; Community Commercial ( CC ) for 4 . 48 acres ; and Open Space ( OS ) for 5 . 60 acres . The City Council hereby adopts the recommendation of Planning Commission , and directs the Community Development Director to amend the Camas Comprehensive Plan map to designate the properties as described and as illustrated on Exhibit A . The Community Development Director is further directed to amend the Camas Zoning Map as described at Table 1 and as illustrated on attached Exhibit A , with the effective date of the zoning change to be as of the date of recording with the Clark County Auditor of the Development Agreement approved by the City Council under Resolution No . a* a r Section III The City requests to amend the Comprehensive Plan and Zoning designations for the area known as the North Dwyer Creek Master Plan , which is generally bounded by NW Lake Road , NW Friberg Street , NE Goodwin Road , and Lacamas Creek , with a combined 688 acres . The request is to amend the Comprehensive Plan designations of 157 . 73 acres from LI/BP and Single - family Medium to Industrial , Multifamily Low , and Single - family Low with associated zoning of Business Park ( BP ) , Multi - family 10 , 000 (MF - 10 ) , and Residential 15 , 000 ( R- 15 ) . The City Council hereby adopts the recommendation of Planning Commission , and directs the Community Development Director to amend the Camas Comprehensive Plan map to designate the properties as illustrated on Exhibit B as follows : Industrial for 92 . 61 acres ; Multi - family Low for 44 . 23 acres ; and Single - family Low for 20 . 89 acres . The City Council hereby adopts the recommendation of the Planning Commission , and directs the Community Development Director to amend the Camas Zoning map as described in Table 1 as follows : Business Park (BP ) for 92 . 61 acres , Multi - family 10 ( MF40 ) for 44 . 23 acres , and Residential 15 , 000 (R45 ) for 20 . 89 acres . - i - Ordinance No . _ Page 3 Section IV The City requests to amend the Comprehensive Plan and Zoning designation for two parcels , known as the Rose Property , which is bounded on three sides by the Lacamas Northshore area , for a combined 54 acres (refer to Table 1 ) . The proposal is to amend the Comprehensive Plan and Zoning of LI/BP to Comprehensive Plan designations of Commercial and Single - Family Medium . The City Council hereby adopts the recommendation of Planning Commission , and directs the Community Development Director to amend the Camas Comprehensive Plan map to designate 10 acres as Commercial and the remainder of the combined parcels as Single - family Medium . The Community Development Director is further directed to amend the Camas Zoning Map to designate 10 acres as Community Commercial ( CC ) and the remainder of the combined parcels as Residential4 2 , 000 ( R42 ) . Section V The proposal includes multiple amendments to correct inadvertent errors found on the current Camas Comprehensive Plan map and Camas Zoning map , as follows : A . Open space designated land at the Lake Hills property (parcel # 84840 - 000 ) to be amended based on a recorded survey . B . Comprehensive plan and zoning designation of City - owned property along NW Parker Street (parcels # 177696 - 000 and # 986028 - 114 ) , to be amended from LI/BP to Open Space . C . Comprehensive plan designation of City - owned property , within the UGB and adjacent to Lacamas Lake (parcel # 178099 - 000 ) , to be amended from Single - family Low to Open Space . D . Mixed use overlay area within North Dwyer Creek to be amended from Comprehensive Plan designation of LI/BP to Multi - family Low, to match the existing zoning overlay . The City Council hereby adopts the recommendation of the Planning Commission and directs the Community Development Director to amend the Comprehensive Land Use Map and Zoning Map of the City of Camas to correct the inadvertent errors as noted herein . ,'i Ordinance No . •� � Nei�✓ Page - 4 Section VI The proposal includes an amendment to the Comprehensive Plan , by adopting the Comprehensive Stormwater Drainage Plan ( dated April 2013 ) , attached as Exhibit C . The plan provides strategies for stormwater treatment , identifies improvement projects and associated costs , and will provide necessary documentation of planned projects to meet grant application requirements . The City Council hereby adopts the recommendation of the Planning Commission to amend the Comprehensive Plan by including the Comprehensive Storm Drainage Plan . Section VII The City Council hereby adopts the recommendation of the Planning Commission and directs the Community Development Director to amend the Camas Comprehensive Plan map and City of Camas Zoning map as described in Sections I through V of this Ordinance , Table I . and attached as Exhibits D ( Camas Comprehensive Plan map ) and E ( Camas Zoning map ) . Further , the City Council hereby adopts the recommendation of the Planning Commission to amend the Comprehensive Plan by including the Comprehensive Stormwater Drainage Plan as attached Exhibit C . Section VIII This ordinance shall take force and be in effect five ( 5 ) days from and after its publication according to law . PASSED BY the Council and APPROVED by the Mayhis � Gi�day of September 2013 . SIGNED : r ) Woo ATTEST : 1 rc APPROVED as to form : City Attorney Page - 1 Ordinance No . 2678 Table 1 - 2013 Comprehensive Plan Amendments Comprehensive Plan Designations by Area Zoning Acres District ( approx . ) Daley, MacDonald , and Mackay 28 . 19 Industrial BP 28 . 19 North Dwyer Creek 157 . 73 Industrial BP 92 . 61 Multi - Family Low MF - 10 44 . 23 Single - Family Low 1145 20 . 89 North Shore 460 . 33 Commercial CC 4 . 48 Industrial BP 314 . 77 Multi - Family High MF - 18 59 . 86 Multi - Family Low M F - 10 35 . 62 Single - Family Medium R - 7 . 5 40 Open Space OS 5 . 6 Rose Property 54 . 45 Single - Family Med 1142 44 . 45 Commercial CC 10 Page - 2 Ordinance No . 2678 Exhibit A - North Shore Map ( draft) Comprehens vs Plan f . _ t t II Single-Family_t.4edium o+ �" �l - --- - _ Single-Farnily_f�igh , , � �� � � �.�hakti-Fa►�ity�Lo'r' j tolilti-Family_High ' } t .ertr�� rciaF Ught ;industrial:Business Industrial Asx Park i opett space,'Green spac kNater CyAF City Limits N Zoning designations are rovaded III ( RJw - - -- - brackets . e Ildp BT • rw ! uj i t ( R-12) `•. ST i ♦ c - - � .w :.. .:+t•r s ..... .-�1a +. -W!Mlta.._ .w :w_-.Nf+.: �r�, C . i1F -7fl� f Lo . NO ��, ,y st4 aT rR Ittr ,r eb ST j g, - - \ t� � E t ♦s u ♦ ...AACKEA ' ti Rp S + ! aT —�— IIi - .,�jsy�, ,� • � �yn. .� � 'ti. � yam, �:', i 2 n. %_ t; yi. i ♦ t f '712 1� t4j ra — - - — - i — r Page - 3 Ordinance No . 2678 Exhibit B - North Dwyer Creek Master Plan area ( draft). �.. Comprehensive Plan Single -FamilyMedium Single - Fami'l��_Hiigfi �� . �.�1t�il'ti-Farr�it,a La's•' + ® Multi-Farm y 4igh Light industrial . Business ye r Ir��lustria1_ r Is r Park City Linifts �' -- - - a MW -- �iI ' i Zoning d , : ning designations . are rovi ided in lip -� v brackets . ( LIIBP ) 41 tb ST rfto , - - !; .L - - ■ I +.�5 ( LIIBP') r IL -9 5 %Iaa 'INS e � Ap it E 1 � s� fry y,% KE FAQLj � j ■ ; : � � � � � y� T .90 ' ? _ r to Lp Page _ 4 Ordinance No . 2678 Exhibit Cm Comprehensive Stormwater Drainage Plan Comprehensive StormwaterDrainage Plan April 2013 s � • ,4 y , r, 0 ---� .-.-...., Lacamas "Watershed �� �� � + • r, r • � 506 +► �4 * t7mWashougal Watershed �� °� • • I • - � . ISO ' - �r� i + fit styM 01 VuAAA J J, . .I+-�.I► { ♦ `1.. � ' 1. ! - - ' AS at V - . .— AA r ... . - r trwr ,. 9, ROUH • f{ s . ._ , s . q . tv Kr ► i6A � RAKE \ +...r w+ !AN aSON • rte- -% � �Asi *mr t s Of A OEM qP • AA ISO, ;. MISS III, 46 ASA AI e A 4V Air? fi of ASA lie ow, . � Columbia Watershed � - , -ir It .,,"RSIPI ,�. _ . . At StIonot ASIA Art SON 74 * 46 kNI jr � '�•�"�""••«....,� ,p"r+�Y r-S•-1 _ . ,..GYM ti'itte, V1■ ` -" � - --- 14 ' If IS ` r • Y . l . l . rr � . � . Y . J fit AO SAO •+ • . Allow S t ISO . • City of VIA •�`�.�.._ amas WASHINGTON --- r- - - - - -- - . , - - � 'fit of LVOMM rnas WASHINGTON City of Camas Comprehensive Stormwater Drainage Pian Submitted to : Cite of Camas , Washington 616 NE Fourth Avenue Camas , WA 98607 Prepared by : OtakT Inc . 700 Washington Street , Suite 401 Vancouver , NNA 98660 Otak, Project No . 16060 April .1013 - - _ , `" able of Contents Fable of Contents • ♦ bbrev ' Loons and Acronyms • a • . . ► ► . l s4 4 sf e4 ► 4 e • eealee ee asea a 6sh ► + ► 440440 99 . 0440 • • . • . . • . . 1 • • . r 0 . 6 7 Section I - Introduction • aaa • asrriiaaaaaearaa . a . . . . • . . i . a . a . . . . . . . . • . . . . . . • . sa . . . . . . . . . . . . . . . . . . . • • . • tf • • . iila . aa ► . . ► 1 . 1 Introductioxl . . . . . 9 . . _ . . _ . . . . . . 4 . . . . . . . . . . . . . . . . . . rr . 4 . . . . . . . . . . . . . . . . . . . . . . 4 . . . . . . . . . . . . . . . . . . . . . . . . . . 40 r . . r . . . . . . . . . . . . . . . . . . . . . . . . . 1 110 Flan Goals1 . 14 . . 4 . . . . . . . . . . 4 $ 9 . . . . . . . . . . . 4 . . . . . . . . . . . . . . . . 9 . . . . . . . 1moons . . . . . . _ 9 . . . . . . . . . . . . . . . . . . 1 . 44 . . . . . . . . 40 . . . r . . , . . . . . . . . . . . . . . . . L E) 7revious Stl dics . . r99 . . . . 14 . . . . . . . 04 a r . . . . . . . . . . . 44 . . . 11 . 0444 . 1 . 14 . . . . 1 . . . . . . . . . . 41 . . . . 4 . . 0 . 4 I . . . . . . 0444 . . 0 . 404 . . r . 90 . . 0 Section 2 �ReguIatory Environment . . . . . . aaa • aaaa • ♦ 4 ♦ a . . • M1 • . i • . 1 . . 1 ♦ a00 . a . aaa a . a • • • 0 * aaaaaa60eee4 ► 0 ► * * ii44 hntroductiona . . . . 4 Y . . . . 14 . . . 4 . 4x . 9 . . 99 . . . 1 . 4 . . 9119 . . 9 . 9 . . . . . . . . . 9 . 4 . 194444 4 . . . . . . . . 41 . . . . . 1114 . 4 . r . . . 9 . 4444 . . . . . 1 . . . . . 49 . 4 . . . 0011 . 94 f ' I es he Cd 1 V e n '\ 'a t e in l c t ( CNV I J. ) 4 9 4 4 . . . . , r . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . i . . . . . . , . . , . . . . . • . 4 4 4 4 4 . . . . . . 4 4 0 0 0 . . . . . . . . W7 ? . ILlhe Safe Drip- kits Water Act SZ� �.1 } 1 . . . . 4 . 1 . 4 . 1111 . . . 4 . 1 . . . . . . . . . . . . . . . . . . . . . . 1 //J 4 4 4 4 . . . . . 1 4 4 4 4 x 4 , . . . ♦ 4 4 1 1 . 4 . . . 1 •.i ZEA 11+ iidanor1.w1eci Species .! ct (14. L.1 A) 91 . 1 . . . 44 . . . 444 . 149 . 9 . . 0 . . . . . 9 . . . . 44 . . . . 0 . . . . . . . . . . . . 9 . . 4 . . . . 0 . 04 . 4 . 0 . . 4 . . . . . . 9414 . 4 . . . 14 47 11 ? . D CitV Of Camas Municipal Cocic �. equ , � ements . . . . . . . . . . . . . . . . . . . . . . . 1 =� s 4444 . . . . 4 . . 4 . . . . . 9 . . . . . . . . . . . 4 . . . . . . . . . 2 . 6 G'Ircwth IvIanageinent Act ((T%MA) . . . . . . . . . . . . . . . . . . . . . . 9 . . , . . . . . . . . . . . x9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 . . . . . . . . 15 ? 97 4horeline Maiiya vent Atka ( SNIA) . . 11 . . . . 9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . x . . 9 . 1 . . . , . . . . , x . . 1 . . . . , . 1 . . 4 . . . . . . . . . . 1 ? . 8 State Environmental �°pct �� l� l' j� � . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 C . 9 . . _ . 1 . , . . 9 . . . . . . . r . . . . . . . . . . . . . . . . . . . . . . . r . . . . . . . . . . . . . . . . . . . 4 .'ribal Ce and lollaboratio? . 9 7 Section 3 - - - . Study Area Characteristics , . . • . . . . . . . sir • • fsesaeea ► easaaaaeeeeeaeaaaaaaaaeeei ► iieaaee • • • s 19 34 1 Introduction 0 . 44 . . . 0 4 . . . . . . . . . . . . . . . . . . . . . . . . 4 . 4 . . . 1 1 1 1 . . . . b I . . . r r . . . . . . . . . . . . . . . 4 4 4 4 . . . . . . . . . 4 . . . . . . , . . . . . . . . . . . . . . . . . . . , r . . . r r r . 1 9 34 9/2, S €. 0 & A L C a . . . . 4 . . 1141 . . . . . . . 9 ♦ x1111 . . . . . 111 . . . . . . rr . . . . . rrr4 . . . r . . 4 . 1 . . . a449 . . . . . 4a . 4 . . 1914 . . . . . . . 4 . . 9441 r . r . 444 . 4 . 44 r 1 . . . 4111 . 1 . . 1 ti 3 Land V! s4 2ind Zot11119 . . . . . . . . . , , . ir . . 1 , r9 . 4 . , . . . . 44 . rr6444 . 0r . . 44rr . 0 . r . . . 6 . 144a4aa . . 014A41444A4 . . . . 11 . . . 1 . . . . . 1 . 44 14 . . . . I . . 1 9 aJt S Ph j ..licl � I Ci1a J. la cteristics . . . . . . . . . . . . . . . . . . 44444 . . . 44 . . . . . . . . . . . . . . . . . 44 . . 44 , 41x4 . 4 + 4 . . 4114 . . 44444 . . 441 A . 4 . . . 4 . 4 . 0 4 . 441 . . , 4 . 44 AM 31 1 J x 1 S t 1 n }n Storm I� r L l� !. nage. S T s t� e 1 1 1 . . . . . 4 4 4 . 0 0 . . 4 4 . 0 . 4 9 0 4 . 1 9 , , , . . . . . . . . . , , 1 . , 4 4 � 4 4 . r . . 1 1 . , . . 4 4 . 4 . . . , 4 , 4 1 1 4 4 4 4 1 1 . 1 1 . . . 4 14 L� A.,M tJ r 1 gable of Contents Continued Section 4amonnomingwonStudy Area ea ► i ate shed k ► lk1 { 111 { . 1 { { AfY ► 1 { { . i ► itt1 ► 11 . . . . 1 . 1 . ► ► . . ► ► ► ► . ► • ► YYf { f 3 4 . 1 Int o d u c t . i o it . . . . . . 1 . % . . a 1 . A a % 1 a A A . . . . 1 1 1 . . . . . 1 1 1 . 1 1 4 4 4 . 1 1 1 . . 4 . 1 1 1 4 0 0 4 1 1 . 1 4 4 . . . a A 4 4 4 4 0 . 0 A . . . . . . a A 1 . . . . A r A , . . a A. A 1 . • a . a a 1 0 . . . 1 . . . . . 4 4 . 3 1 1}- Columbia o umbia I'U' er Watershed . . , . . e . , . / . . 1 . , . . . 11 / , . 404 . i . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . r . 9a44 . . . . . . . . . . . . ♦ . . 10 4444 . 4444 , iJ 4 . 3 1 . oacal�� a 1. al1 {:.'. If' ' at ershed A 1 . . t 1 , . . 111 i . . . A i k 0 A, f1 . 11 . . , 1 . / / . . t . . . . . . . 0 . . . . . . . . . . . . . . . . . . . . . . . . . . , , . . . . 4114 . . . . . . . . . . . . . . . I V 36 4 . 4 Washougal I Iver & I.., o \�.vcr I. Jacamas Cheek IXVatershed . . . . . . . . . . . . . � � Section S Cap1ta. 1 Improvement 47 5 . 1 Introduction . . . A . . 4 . aa0aAaa . 14A4 . . . . . 44 . . . . A . . . . a 00 . . A . 44 . . . . A A 4 . . . . . 4 A . 4101 . . 4 A . A1 . . . . . 010 . 40 . . . 4 A . 4 . , . . . . . 4 . 0 . . . . . . . , 4 . . . 44 . . . . . 447 Pro Jecl Name . 'I�ranspoJ. to \ ion. Related Stormwate Facilities . . A A 0 4 0 6 a 0 4 0 f 4 A a a a a a a * a 0 a I a09 . . . . , . . . 4 a 1 , . . . . 8441 Project �� ame .# ` torn" Viewer Cronmrveyance Modelin ; . . . . A . . . . . . . . A . . . . , . . . . , . . . . . . . A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 . . . : 3 Project ame : North Dwyer Creek Store water Basin Plan . . . . . . . . . . , 11 , . . . . . . . , 1 . . . . . . . . . . . . . . . . r . . . . . . . 1 , . . . 5 Project Name : 1/ , ass Valley LJtoAmwater Bas ' n Plat . . 4 a . . . . . . . . / f . . . . 90AiA / , 40 * 4C1 . a . . . . . . 911 . . . . . . . . 4 . . . . . . . . . . . . . 5 Pro Ject Name & Pacific Rim Boulevard Crossing e . 44 . . . . . . a4 . . . 4 . . . . . . . , 4 . . . / 41 , , , . . . 1441 . . . a . 0 . . . . . . 0 . . . . 1 . . . . r . . , . . 4 . +/ ! i, Project Name : Julia Street Storinwater Pond Retrofit . . 0 . . . . 1 . A904Aa . A . . . . . 44a . a . . . / 1 A A 1 . . 4 . A 441444 . . . . . . w 0 F61 Project Nanie . ' I:`hc> mas / Carson Estates Fl . . . . . . . . . . . . . . . . . 1A . . . . . . 901 . . . . . . . . . . 4 . . . . 63 I� roject: Name , forth L? rl� ai Growth Jtl� � x-ea Stormwater Basin Plan 04 . . . . . . AAvA4 . 44a00006 5 Project Name ,e Forest Hotone Road Sediment Basin . A A . . . . . . . . . . . . . . . . . 46A . a 44 a . . . 11 a . . . . . . . . . 140 . . 144 . . 144 Project Name : Blue Creek Sediment I.3ns111 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111 , . . . a , . . . 4 . . . . . . . . . . . . . . . . . . . . . . . . . 4t1 . 4 . . . . . 69 Section ••_•AAVAV* ) mincing / * . , , , , , lisfA ► ► . 61h . . . • r . 006 ► ► • . sr . oo * ► 00090604049 ► . f . . • . . 1 { { f ► ► • 7 I 641 Introduction 100 . 4 . . A1 . , 4444 , RA . 40A . . 0 . A4 � � � . 4 . . 4 . a . . 00 . . . . . , . . A . 1 . . AA44444444 . . . , rA . . , . 144441 � 4444 . . . . . . 4 4 . A 0 . . . 4 . Ai411 . , a1 . 44 . . . 1 / '1 Section ~oVAvAoyA e-ferenL..Aes . 4 . . : s ► * 0 # { . 604 { fl it { 6 4 { ► { 4 # 4 * 0 At 10A4 o f f ► ► r e ► ► ► ► • ► ► ■ ► . . ► At . . . . At to * 4 : l r at a rl ► ► ► ► ► ► . . a At 0a { 0 { 6 73 1# � 1 C tl lIl cl .r VAPI OJIi( :'f *�, ) (� ( k) ( i� 1Gt)6() � l�cjti( � iE �1 ; E:� � cz� Natci ( : :t)� �aai 1111prt� wenwiit 1 'Ean ` Draft Al)rVer •i . citi :cs Table of Contents Continued Appendices Appendix A : Storm Facilities Maintained by City Appendix B .0 Cost Estimates Appendix C .6 SPA Table of Figures Iiii tire 14 .r TI-ic Importance of Stormwatcr Nianagement (Courtesy of Clark Count)!) . . . , , . , . . . . . � 1� 1 !L�ru. re 3 - 1 . city r-Jimits and UGA Boundgrles . . . 1 . . . . . r . . . 1 . . • . . . . . . . • . . . . 111 . . ♦ . l111letoll . . . • . . • . . . . . . s . . . . . . . . Ir . . . � � Zoning i ure 3 - A : Current �1� ��� f Caning . . . . . . . . . . . . . . . . . . . . . . . 1 . 1 . . . . . 1 . . 1 . . . . . . . . . . . . . . . . . . . . . . 1 . . . . 11 . . . . 1 . . 1 . . . . . , , . . . . . 1 , . . 1 . . . . . 11 . . . . . 1 w �. 141 g re 3 � 1 City Contour r MarA . ♦ Y r . I . . . . 110 . . 1 . YY1 . 1i . 41 . 1 . 1 . i . . It . . . . . . . . . . . 1411 . . . . 111 aaa . . . a . . t . . . . a . t . . a . . . . . . . . . 11 . A V 4 # 1 . 1 . . 1 , 144r 027 t.-' 7L{ X. �. �J " "T' ♦ NRC`�J �+' `! VA .M1 .a C4 l• •y� \.+ rAC � . . a . . . . . . . . . . . a . • . . . . . a . a . . at • . a . . . . . f1 . . . . . . . . as . . . . . . . • . . . . . . a . . . . . . . . . . . . . . . . i . a , 10 . 1 . . . 1 r . • . . • . • A i Ii ux' c 3 - � : I?fzvironme �� tal Constraints and L' nsCal� le dopes . . . . 1 . . r . . . . . . 10 , . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 . ..•. ./ 1• � {y �� rV - t • � FttV `s Y4 V and . 11L Bound a ri c s . . . . . . . . 0 . . . . . . . . Y . . . . . . , . . . • . 0 . . / . . . . . . . . . . 01 . . . . . . 0 . . . . . . . . . . . . . . . . . . 1 . . . . . . . 3 �J I, lgurc 44 . Columbia 1UNTcr atcrshed and Basins . . . . . . . 11 . . . 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 r . . . . . . 1 / , 1 . . . 11 . • . . . . . v4....443 1 {iCrure 4 - 1 I acamas Lal ae Watershed and Basins I . . . . . . . • . . r . . • . • . . . . . . • I . 1wrI . . . . . . . . . . . . . , � � �..+ . Lacamas C . . . . 11 . . . 1 • i. . . . . . . . . 1 . r . . 1 . F igurc 4 - 3 : Vv ashougal I ivcr & 1:aacf Creek \ atershcd and Basinsrw Figure re .5j 1 P 4 IP Project Locations01 . . . Y . . . . O . • . 1 . . . 1 . . . tI1 . i1 . . Y . 1 # 1 . . i1 . . . . . a . 1 . . l I04I4 0 . f • 1 . . * Agog • • A4Y . . • + 'Street fond in a sprin � �� 1 � flood event 1 , 1 . . . . . . . 1 . . . , , . . . . . . 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . � � l:{inure D - 3 : Julia ure 5 - : Sediment collection facility at Blue Creek. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 , 1 , . . . . . . Y . , , . . . . . • • . . 1 . . . . . . . . . . .ig . . ' � . 0 )71PIVe } CIl .S11) e J � f1r11111la e D1' a111 �Pe P ail tPAlyROJFC; 14 \ 1 (If Hfi} � 1Gfki{i'� ltc �� nzi '� �tic � rm�.t.� tc � ( :oApit*A I111prc >rc• new Phri \ Ora t 0ty Ver 4 docx ` able of Contents Continued Fable of Fables 011 ;Iblc: I . 1 : Pat. Stormwater and Drainage Studies . . , . . . , . . . . . 10 . . . . . . 4 . . . 0, 8 . 190 . . . 4449 . . r , 4910 . . v4110 + . . 4 . 1 , 0411 , , . 1 , 4 . . . . . . M:) Table ? 11 . C: las ;� V Well Zdcz� tif� cation Guide Brom LI'11 . . . . . . f , . . . f . f , , . . . f . . , . , f , . . , , , 1 . . . 11 . . . . . . . . . . . . . . . 1 . . . . . . 1 ? "fable 3 . 1 : Camas I.. . acid Use Zor1i11g . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . , . . . . . . . . . , . , . . 1 . . . . . 1 .E "Fable 4 . 1 : Ci, mas Watersheds and Basins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 . . . . . . . . . . . . . , v t r v w v a a 4 6 . . . . . . . . . A A . . . . . , 44 . . 41431 r ' ufr � teStCrl �Ci . . . , . 111 . , . . . . . . . . . 14 . + . , . . . ,bl : ol� � ba uttr Styatet;icsIahd ' Fable 4 . 31 Lacamas Lake NX/atershed Stormwater Strategies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 , . . . . . . . 37 Table 4 . 4 : Washougal River' / ��cmez Lacamas Creel; �'Iif`atcrslicd 5 €: o �• ixa ��.Tate �• St� atc9ies . , . . . . . . . . 41 `fable 5 . 1 : C; IP Sumn . . . . f . . . . . . . . . . . . . . . . 11 . . . . 1 . . . . . . . . . . l . . . . f . . . f . l . . . . , , . . . . , . . . . . . . . . . . . . . . . . . . . , . 1 . . . . . . . + . , . . . . . . . , . , , . . . . . . . . . . 47 Table 5 , ? : Transpor- tatior�. Belated Stor~l�Z �, ater I={aczlitics I stimatc a. txcl FunCir1 � Plan . . . . . . . . , , . . 5 ? '�]:'ablc 513 : Storin Sewer C � otive �lance Modeling I lstir-natc° atld funding Plan . . . . . . . . . . . . . . . . . . . f . . VON . 1 . 54 Table 5 . 4 : Forth D \xArcr C� reelL I� stll�latC and I {unding Plan . 1 . . . , . t , , . . . , 1 , , , , , , , , , , , , , , 1 . . , , . . . l . . . 11 , . . . . , 1 , . . . f , 5 6 Y 1 rw 1 ' ablc 5 . : C,� iaSs Tall. e }� I-i stim. ate ar� d Isur� ding Ilan . . . . . . . . . . 1 . . . . . . . . . . . . :� _ l . , , , , / . . . , . . . 11 , . . . , 1 , , , , , , , , , , , , , , , 1 . . . ♦ , . Tecible :) . 6m Pacific Ibin B {.+ UJeNrard .l.Jslimea c and Funding Plan . , . . . . . , , , , , . , f . . , . . , , , 11 , , , 111 . . . , , . 1 . 11 . . , . . . . . ♦ „ } ' I a- ble 5 . 7 : Julia Street Stormwater Retrofit I st.imate and F UlIding I' lark . . , . , 1 . 1 , , , , , 1 . . . . . , , . . . . . . . . . . . . . . x ? " Fable 5 , 8 : '.�yhU1T] as / Carson I1st�ates Flooding .� st� Il�at and I1undin4 Plan B 9 9 w 1 0 a 9 9 6 0 A 4 0 P 6 1 , . . , i , . , • • . . . `I Table 5 , 1I ..� C� I:�, stinnat. e and 1=jur clir7g Plan * . . . . . . . . . . . . . . . . . . . . . . . . . 1 . . . . . . . 1 . . . . 1 . . . . . . . . 1 . , . . . , , 11 . , . . . , . 111 . . . . . . . . . . 66 Table 5 . 11 : Forest I..,lome Road Sediment Basin I:lstiMa. te and I, unding Plan . . 1 , . . . . . , . , , , , , , , . . , , 1 , . . . 7 'Fable 5 . 1 ? . Flue C: i.ce �� Sedirrrcr� t �3asin I:lstaimatc and Ir�unding I71at� . . 1 . . . , . , f „ , , , , , , , , , , , , , , , il „ 1 . . . . . . . , , 70 Table 6 , 1 * jf1 (/ �+ y` `y )s•��y� �+ J{� +j• � •h. (y'y� .i. a l� e lJ , 1 ; St \ � L m \ Yat eL Ur 1 L), 1\* a tLs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 . . . . . . , . . . 1 . . , , , , . . 1 1 . . , , . , , . , . , . , . , 471 �' 1GiMUA16(Xit71 : torinkV.1; V14 Captial lrt;provenicill t� laci '`, l7rltlt (.: i11 V12c 41 .doo. Abbreviations and Acronyms 303 (d) I Ist An EPA -- Mandated listing of streams that do not rneet water qualitsy standards . It includes the contaminant t3rpe and source: , stream segMelit length , and other informatiota . B �� P Best l��lanagement I' ra, ctice : A Best Management Practice Is all actiA Fity , device , or structure that serves as a nogicans of reducing or eliminating the generation of pollution or the movement of pollution to \yards streram , rivers , and lakes . CII Ca ltal Improvement Pro � e: ct or Cral� ital lnaprorement I? lzn C; ollectloia and means the drainage faczll. ttes , both natural and m n - z1aade , «. h ch cC3z�.vej' ance sjrstezn collect , Contain , and provide for the flow of surface and stortmo%vater Woo to a receiving water or infiltration faclli. tjr . The natural elements of they conveyance systelmon include , but are not limited to , small drainage courses , streams , rivers , lakes , and. �xretlands . Thel� unran - madgc element , of the collection and conveyance system include , but are not limited to , gutters , inlctsy ditches , pipes , channels , and retention / detention facilities . C Wa l\ Cleat ���ater Act DIVIA Designated Management Agencies Detention rl "o hold runoff in a basin (pond � for a short period of tune , thereby delaying the introduction of its volume (quantit 7) of stormwater to the neighboring stream. Ecology Washington Mate Department of �lcolog)r EIA Effective ln� l� c� r�Tiot� s ���, xea : Defers to impervious area that is directly connected to a collection system , as opposed to running across grass or some other trpe of pervious system before entcriz"19 the collection systeM . EPA Environmental Protection Agency l ; S � Endangered Species Act ESC Flan I roslon and Sediment Control Flan Comp rz' h eHsi PO , r l orlwmat e1 ' D ? * al41117ge plail V '1': \ 1' 3Zi }� 3 ;�' I ' 11G (h�(}\ 3GU4(.)1, �ieEcrt ,.` tt}i�, u :atete4 ::��� lt ;�l tm�: r{ frcrtllne 1�� 311I ) :ttt t.: tl ' 1'er a _cicc' t Abbreviations and Acronyms Continued " 1ood C ontr ) l F ,aciHtNr A detention , retention or gather Storage facia that reduces the flow rate: of stormwater runoff and retains and relcases storage volumes . Flood I�` lai l fI `l� e land bordering a strc; a �ra subject to inundation when the stream is at flood stage . Flow Control Exempt Large water bodies shown in Appendix I - E of the ?CJI ? Stortvat: er 1lflanagement Manual for Western WashIlI ton are eXelnpt frolAll NNEninium Requirement 7 . 1�FFIN ull - tine 1: cluival nt l . mployee Ground Neater The 1v\. ter under: the surface of the earth that is found vAthin the pore spaces and cracks between the pat: ticles of soil , sand , gravel and bedroc1L . 1-17dra �. k Cotltlectftit), Sirnilar to 7: 1,A , where runoff from inipervious surfaces arca cli �.ectly connected to a collection s �tstem . Reducing .1-lydraulic connectivity. refers to discharging stormwic ter to pe .t sous areas rather than a collection system . II� DE Illicit Discharge and Detec6oia FAiminatson I�� rogram Illicit Discharges Any discharge to a strort sever that is not composed entirely of st. ormwater and is not allow\ved per the NPDES permit and C . M . C . x. 4 . 04 Injection Well Means a " well " ' tatowhich " fluids " are being in 1114ED Lcadership in l ? nergy and 1_4Mvironmental Des1911 . 10111) Low Impact Derelopment TS Municipal Separate c StormSe ��rcr rsten� : The Municipal Separate Storm Sewer System is an � mandated program that regUirCs fflutficipall ties to initiate activities to reduce its quantity and improve its quality of stormwater . NFIP National Filood Insurance l' rogratn N NVSNational Marne F' sheries Services NOAA National Oceanic and Atmospheric Adilmilistrati011 D _ a III a S �"'tihFt�� � l :(�t "1 IGix) (1'4 M (oti� t) 132tjtrt . � 4ttrmtatirr t ; :�E�it :� € iutE>cc � rctt� r,lt l �t.tt� A, � � c.tf[ t� 31 ' V `cr •�.c3nc� Abbreviations and Acronyms Continued NPDES National Pollutant Discharge 1.1.1 nir� ation Systenar A permit required from l: PA for the discharge of stormwater into rivers , streams , and lakes . It is the: permit that go�R,rerns the ,rctititles under the. MS4 program . NRCWS Natural Resource Conservation Service Non4lolnt Source Water pollution that sloes not conte from a specific pipe , but is derlq\red from stoat- water runoff and flows to streams , rivers , and Jaes directly from adlacetxt proper ti pcs , NUGA North Urban Growth Area Non —Structural BM13 A 13MP that does not include the use of a structural device , with as public educatioll . O & M Operations and IN/laintenance 14 4 Point Source Water pollution that is released from a specific pipe into a stream , river , or lake . SDC S )Ystem Development Charges SE!'TA State I_ r1vironmental Police Act S �-iI.- A Special Flood liazard Areas S1\11 , /f \�'l1 ' ' I'l e ) ? Stormwater i4lanagement Manual for ��pc� stcrn Washington , prepared her the Washington State Department of Ecology . Stoma Sewer A system of below ground pipes that convey storrz-r �vatcr to� its discharge point . stoillwater Stormwater is rai rnwater that accuniulates on land as a result of storms and runoff from urban areas such as roads and roofs . Structural BMP A l3hriP that involves the use of a structure , such as a vegetated filter stripor catch basin 1ATIth sump . Surface. Water Surface water includes stormwater, and water in a stream, .river , lake , wetland , or octan . S\dTMP Stora water easter Plan 46 Cr viprebe )ISIpe S` tormnlalor Dr <rirraw, e an �rll " ; 1, ! > R ( )ji :C : 1 ' '� 2f,Lu t �\ It,{►Gt�'ti }tclac ; r . 1 � tc} Hatoeirr Cl.theta) Irttpux•c•cctrrir I1110I ) ratr ( ' 11 , Vo •d -does Abbreviations and Acronyms Continued SWPPP Storixiwater Pollution Prevention Plan ID14 Total v a izIIuM Daily Ilcaad : 'Total maximunoi dal lead iS a nicasurt•cent of the maximum concentme tion of a specific Contaminant possible In stream �vater without causing; harm to the stream . TSS ' Total Suspended Solids UR Underground injection Control : the Underground In ) e CtIon Control program under Pirt C. of the `safe Drinking Wester Act , WhIClI regulates injection wells . Waters of the: `Mate Tncludes those Nvaters as defined as " waters of the; Un ' ted Staters " iii 40 Cl'L' R Subpart � ?? . � within the geographic boundaries of 1 '/ash1 -igto �� State arid. " raters of the State " as defined � n Chap ter 90 , 48 RC. W. which includes lades rivers , bonds , strcarns , inland waters ', underground waters , salt waters , and all ether surface waters and water courses witl7ln the jurisdiction of the State; of Wash111 to? n . Wasteload Allocation WQ Water Quality ' ill 1 1' 3' 4 C a )w a x 1` : `, 11I; 0J } ?{:f ' L1G (1t}Ull ( 4}�i( 1 � Z� E, cszi :'.`•stcrz� rltcr {.:. � tt :� Ilmlu � rtritrtt IIa1 � D ) rlEt ( : Tll'c'i 1 • drL,� Section Introduction 1 . 1 Infraduction As With manor communities across the country , the City of Camas is facing the challenge of balancing growth arid developnric� z� t �vitl� qu ' ht�7 of life and environmental stewardship . Recent information reagarding the impact of urban storm \,tater on the etiviroliment has prompted neer regulations , including National Pollutant Discharge I� lii�-i�inat.ion System (Ni' �. E, T Ir permitting, Underground Injection Cozr. trol (UITC) regulations , and the Lndangered Species Act (ESA) . These regulations have forced Jurisdictions to fund eNrer - expanding storlrlwater programs . And , the implementation of water quality and flow control regulations finds jurisdictions with a need to manage: and maintain an ever larger list of stormwater infrastructure components . As \NTIth all utilities , storywater infrastructure: requires routine inspection and maintenl3nce . orrzc; pipclines in the downtoNim core are Drell over 70 , vears old , and repairs become i"pore: frequent to properly maintain these assets . Some stormwiter facilities such as detention ponds and biofiltration s �vales have been in place for 20 years or more , and these facilities require routine maintenance and repairs such as re - grading and landscaping , fencing replacements ', access road upkeep , or structural repair$ . The Qty ' s Nl.� D � S stormwatez: discharge pernnit \\ritl7 the Washington State I� epazti�� ez� t of F colog�� ( . colog 7) continues to consume more of the City ' s. resources . I etrofit: programs , imnonitoring, napping, , .record - eepinx and reporting, illicit discharge and detection , public education and outreach , and the myriad of other requirements tales more staff time and requires more capital projects to stay in compliances ` lp' lic current stormwater utility rate does riot include a large: capital . Financial Consulting Solutions Group ( CSG) conducted a rate stud}r in 2009 , and this study set the story rata to recover the cost of basic operation and malritenance of the existing storimn system and modest 'Imounts for replacement of existing infrastructure: , As part of the l=sishei Basin ��, tillty , some capital dollars have been available but that account has been depleted . To provide a secure long term capital fund , the F SCG study proposed Implementati (} n of a }Tstezx e Yelop3-nent C� 13ai-ge< ( SDC �vith a me: thodolo r consistent with the currant N. TatC'. r and sewer SDC.; . F 'he rate would capture both historical costs and futurecapital needs . Prior to considering an SDC the Cit^fir is required to adopt: a basis for the SIC; , I0ior these reasons and othe.1rs , the: C: it� 7 proposes to develop a srormwiter capital improvement program sizr�ilar to those for their transportation , water , and wasteg vater systems . These well � establlshed programs are used for developing , Implementing, and Eu�. ding projects l ce: e' ssary f'or the on ;Ding zx� ai �� tenance , repair , and upgrade of existing assets , and for the planning and construction of new facilitlese rhis flan Nvill provide the basis for the future capital component of a SDC . C 11 P11 p r e b e 11 S 1 11 e .� t o r ?>I v a e 1 ° 1 1' (1 1 1P t'1 'g e a 11 \` : 1I '�tC� jl :t;`I ''t � (rtH �tallGikit)� ��� E�c,it �l4ttarnr,�•.ttcr C: :t�» r:tl lxtt�� r� tietocr�r 1' lanit � rhtt (: 111' cr •I . Et>�: x . . .. , » ta ,u, z . s , I� Section 1 --- Introductjoon Continued This inaugural CIP provides a capital program list that can be used to plat. and fund stormwater maintenance activlties , retrofits , repairs , and new facilities to sen. c existing and new development , This list can be used to develop asig: - year �: apital elan sln.�. tlar to other city infrastructure programs . The intent of this inau 9ural flan is to identify an initial. list of maintenance and capital improvement projects necessary to adequately care for the city ' s stoma witer infrastructure . Pi�lais plaza includes the following components : M Section `Tsrvo : A discussion of storrnrx�atc: r rc�gulatit� ns that the cit)j follows . Section Three : A d.lscussioia of the stud- area (City 111T . ts plus urban growth area) characteristics that it) 6uence storm, vater managenrient . Section Iioura A discuss102l of future development potential and how the. City ' s stormwater ordinance may be r�1ct with the future development , Section Five . A list of capital pro ) ects idcnti6ed for correcting deficiencies with <: fisting facilities or ldentlfy unfuture capital improrrement nce; ds . Section 5ixt A description of the C11)7 ' s stormwater funding through their storinrvater utility? , Future editions to this plan rvtll tncludc a plan to lnect the City ' s ongoing funding needs for storm vater infrastructure . 1 . 2 Flan Goals The`he Cityleas ixaitiatcci tie derTelopr�� ezt cif a Capitali7prorjerr> cnt Plan as Dart of their structured approach for implementing stormwater prograins and projects , and n� air� taiYait �; the Cfit�- ' S existing Storn �.vater assets . This plan seeps to align itself with and ascribe to the goals of the City ' s rnissioll statements Y Yje ci f Ca via t't?11I11llls to pj fu('17)111g ils hf'lilaore, slisleiinhi� inn e11hant111ei h< b giteijl1) of 00foY (1ll /Is Cltl. :Z, ois and dG' 1vlopu1s the G`011li vini to vleel Me cballeii TS OfI�IJ� �l�If1 't'. � �%rt? fllr�'e pi *ide hi pros ?1 '1wr1g a hea110111' V1l'DIl1l1G'w )v&"le p1 'oxolhia etwiO1111L' tgl "f x1h. 11 f ('11t`0x %gg{' 1C ['1lt' i1S l. 0 ?G711G1�?LrlG' til01.'c't"i111f'llt CXJIc CDl1?l1?lt1lZ �, G7sS`1S17111P f'llt Z11 11;5 t? l'l..i' 1'0 p ? 'U1'It�t' glia 1t)f S�'lY1ll �S coil tS . enl 7,vil .J 1�.��Z � ` l�t'S1r't's' and IiCCl i . This Mission statement describes the City ' s comna. itment to proLectlflCr the en Yuonment and duality of life for its citizens , promoting economic development to n� aira. tain vitality in the urban a �: ea . Vlith that in mind , the following goals leave be (nn developed for this story l\ later capital program , Cr elate a program for stormwater: mat gement that replicates capital programs for the CitAT ' s other infrastructure systems and allows for capital program ve planning and funding . Develop a progr-ain that allows for adequate funding of stormwater projects that supports the Cit}T ' s trail sportatiOil Infrastructure programl ' _l �' 3tl' )� f .C: '1 ' `, 1C+tKl{1 � 1ltyle{►\ ttelyr, rtrl � cc, r,zi �� ;ncr { : aSt� t ;al 3tnls �c;ticc3tctt 1)1;in \ Dmh CIP Vej 1 •tl<;cx Section I _ Introduction Continued Pro \Fido stornwrater management in a. Nvay that is consistent Nvith the; City ' s mission statement: ire regard to ell rirotltllc ntal protection and economic derelopn-lent , PI gure 1 - 1 proN- ides a discussion of , tore. water runoff and how land use affects both the quantity ars { quality, of the z• uz off. As this water 1s �vlaat feeds our creeksanstre �. ms , it has a direct affect on the quality of aquatic habitat . TI s d� sGussroz'z rc� v� cies information on the framework from which stort"nwater management tools are developed . trPr e b e sI' ve Stcrrmwa er 1] r• aia (t ,,ge Plan 3 l' A3 ROJI *. ( : tI6\ 16(H)4)\ 1l1(wt(illtyouxAslof)mvxe TCIIJWoVtuInt llt,t : \ DrIR C : 31 ' VVi I4A(Yc \, , .,. 4 , . Section I Introduction Continued Tlie lr-nportance of Star i nvvaier Manacgement IVlifigotion through Stormwoter Mcinagement Stoimwnter moringement goals nip Intended to mitigate stoirnwater impacts rforitt d The Nater Cycle by glpicaf development proakes so new development and redevelopment maintain The earth's Water contnuously a better Balance with the natutal water cycle , this is achieved through the following circulates between the ambo . The natural water cycle approoches , sphere to the land in the forms of t46404wmoi • Source control best evapotmnspiiation ( from earth to tVXXW, .&.,14A management practices utmospthete) and rainfall where ( MR) prevent stolntwafer it becomes surface ascites aria �� �~ a � ^ from coming into contact Infiltrates into the soil to become _, % 11 with pollutants in the first r grounftotel . ibis is called the place. Examples include wotoi cycle, or hydrotagic cydo, sweeping inste0d of using � � uµ* rind is k%► to understanding W0181 to clean an outdoor1 . s . . storinwater tincts. 4 1 h ` ; '' + �� (, aieo and minimizing the 1 use of chemicals for yard In natural (unrleverapal ) condi- ._ , , . ;�-:. _, � - case, Source control RMI's .. tions. rainfall infiltrates slowly into the grouna . Natural biologic processes deonsp the qW ater2 cost- efft mkoo means water as It moves thfough vegetutioih and sail and into grolrrrttmIero lJ m% most d should the ti first consideration in all rainstorms ars not large enough to fully saturate the soii, only a small percentage of of refacing pollutant in st�� rnhs �atr3 � ter ; rainy;ater flows.. ovei the surface as tunofi' . �ft sloes become turnoff usual ) O travels in pi©facts, n stow, tnaandering rxlre, l'klrtides and sedirnents settle out alone the Away, ridding the ' Treatment OMPs reduce pollutant loads and concantiations in storm sorter runoff Water opt irnptrtiti (hs k►e ote it floor into rims nPd streoms through plhysicol, biological , and chemical iamovol rnedranisins. Examples sr+ - cluds biofiltration , dispeis=on, constructed wetlands, and pro¢ rietary filter systems. The Effects of Development ( hese BhWs may accomplish significant levels of pollutant load reductions if Nvelopmetlt drastically alters ptaperly designed and maintained , Par of the natural Yvter cycle.. ! flow control BMPs detain, retain, or inf ilhate stoirnwatet runoff to control the flow Impervious surfaces such as build= iota, frequency, duration, and volume of runoff leaving the site. Examples include . logs and roads prevent fain from detention ponds, infiltration systems, and Gonstrocted wetlands. sooking into the ground _ There is tow impact development approaches emphasize capturing, treating, and infiltrar- also less vegetation to soak tip, Ing stwinwatei at the source. lediniques are used iliai mirnic natural piocesses store. and evaporate watei In - r by allowing stormvater to slowly soalt into the ground or filter through s�egeta additionf the natural soil structure tion— for example, potovs pavement, rain gardens, infiltration planters, and is lost as o result of grading and - r. - _; green roofs De, go and construction methods that preserve and take advantage compaction during mrstiuction . rpt the site's natural features, such 05 open spaces, native vergetatiorh , natural As a result Stormtvat$r ruihoff s: ` Y. depressions, and wetivnds are also considered LIDA . This approach provides greatly increases, flouring over multipls enviionrnentol, aesthetic, and cost benefits in addition to stornwinter land surfaces or through conveyance systems ( such as pipes and dit(hes ) lain r ► wux ; (A' 17u management , streams. This alteration of the water cycle can have significant negative effoas on surface I&VIet and groundwmtei, cousing harnh to fish and A Idlife, drinking water supplies, prapertY, recreation, and other benefidal uses. • Inawsed runoff volume and speed may cause floodiog and etc loci grid onva + rrttew of notwal habitat in rivers and stioams. • Because less watei ilhtittratss faro the ground, len Qroundhrmter recharge may occur . This con teduca drinking water and litigation supplies and may also reduce Ease llowk in stieuim, wfildi (on be deitimental to fish and ayuotic uigunisins. • Developed sutfaces retain hoot, whidh increases runoff tempeiaturo during %vorrn weather . This in turn may [Oise the temperature of the receiving suers, Mth potential negative impacts on aquatic life. • Stotmvotet runoff picks up oil, fertilizers, pesticides, metals, chemicals, sediments, bacteria, debris, and tither pollutants and may carry them into rivers and streams. Figure I " I : The importance of Stormwater Management (Courtesy of Clark County) 4 Cr ter of Camas ':� t 'RO) 1?("1'� 1GUtlt1\ ] Gt.►bU\ Itri tt��titortn�atcrC:►�► talImprovenleit11,1.111 \ DrAtCIP e'er4. docx Section I ® Introduction Continued 1 . 3 Previous Studies ' I'lie Cit�r leas coiidticted starmq%vater studies to address specific problems or to provide master plans Cor specific areas , 11his Capital Improveinciat elan iricludes a review of these p << st reports to ident� f � opportunities 1°ur Implementing projects developed. \Ngth those: stIdles . ' I 'he 14 ey pliixs etnd studies are listed M Table 1 . 10 Table 1 . 1 : Past Stormwater and Drainage Studies Date Study Nai•n. e ( Ctt)T job Ido .) Published Author Fisher Basin Sub - area Plan ( S -253 ) Early 1990 ' s Parametrix , Inc . North Dwyer Creek Master Pian ( Sm370 ) October 1993 David Evans and Associates Technical Memorandum for long -Term February 2001 David Evans and Assessment of Forth Dwyer Creek S --370 } Associates Fisher Basin Stvrmwater and Wetlands July 2001 David Evans and Master Plan , Phase 1 ( S �370 ) Associates Lacamas Lake : Nutrient Loading and In - April 2004 dark bounty lake Conditions ( NA ) Fisher basin hydrologic and Hydraulic October 2005 Maul , Foster , and Along ) Analysis ( S450 ) Monitoring Report Lacamas Lake Annual 2007 Clark County Gate Summary for 2007 ( NA ) 1' ; \ 1'13C )� 1 '.C :'� ' 11 t? Q{}( '+, 1 Gift,{iE, Ilt`Etut't `t� tt io-nt : it c' r <:;3Equ ;il Ittlrc ' ctytCrtt 171 ,tu 1i )rift l.: l l ' �`t'i •I .t14Cs Section 2egulatory Environment 2 . 1 C ntrod action The Cite of Camas is required to meet local , state and federal regulations applicable to Its operations and {activities . Environmental regulations that apply to the CitY are sutl-.lnarizCd in this section . � �thile the primary focus of this CIP is stc� rtn�vater , theimpacted natural resources include surface Nvaters and associated aquatic specie and habitat as well as groundwater: . This section provides a description of each recluirernent nth the majority of the narrative foeusix� g on those xeulatioi� s deemed to e the primary drivers that most influence City functions. . Because it is a regulation that spans multiple environmental media , the Mate I nvironme.• ntal Police z ct (ST� Pi is covered as an adjunct to other eilvironinental regulations . Similar to S �J? tribal i # put through the consultation and collaboration pro cess spans multiple regulation and environmental media and is also an adjunct to the other listed re �i.11ations . C 011Sequently, these: two topics are treated separately and are discussed at the conclusion of this section . 2 . 2 The e Clean Water Act ( CWA) 'Fhe CWA is the priniary federal lav governing water pollution . The goal of the C: WA is to elimmate releases of pollution znto water and ensure that surface writers meet standards to protect fish , shellfish , wildlife and human health , Under the Cori PA has ianplemend Pollution control programs including the National Pollutant Discharge Elianinatioll S07stei•n PDES ) pl� rinit s4rstem which applies to industrial , municipal , and construction disci argcs to surface A.va. ters . In Washington Stat; , 1:1PA has delegated authoritT to administer the NEI P � S permit progran^i to rhe Viashington Statc Department of � colog�� (I_� cologF) . ' C'lae NPDES Phase ZZ Municipal Stormwater Permit applies to the Cit of Camas . ' 1fie C �� r A also regulates duality standards for surface vater• s and. requires that water bodies trot meeting standards he placed on the CNX/A section 303 (d) list . Waters placed on the ist require the development of a watcr cleanup plan , also known as a Total Max 303 (d) linum. Dally Load ('I�'11r1DL) . l` ollo�"nng the 1ISSilailcle of a rl. MD1. . , NPDES penults are modified to include implementation of requirements to reduce pollutant loading . "I' he NPDES storinwater pernut, standards , the 303 (d) list and TMDZ,s and their applicability to the City are further described in the following sections . \'O ' \ I ' Itt31f .C: I ' � JGt�( !(1� 1Gt}{,{31licJ+<� r[.. �, titc� int�� arcr C:,� E ittl Jrt�l� cc�vcrltcric I '=<zls \ I7ralt C111 qtr •i .�t �i+ € , v , A, r;,; ; Section 2 e ulatory Environment Continued 2 . 2 . I NPIDES Permit Description and Applicability Phase I1 NPIDES Municipal Stormwater Permit NPDES Phase 11 pertoyllts , First issue. In 1999 , requires regulated small .11vZunicipal Separate Storni Sever Systems (N/IS4s ) in urbanized areas , as Nvell as small NI outside the urbanized areas that are designated bar the err rtt� ng autl8iorit�+ , to obtaln NX DES peri -lit coVerage for their stormwater discharges . Sn� a11 �tTS � s are jurisdictions or agencies N�7ith Populations urldcr 10000 that are not regulated by a Phase l program . Small l S4s outside of a UA are required to obtain ars NPDJ S permit if it is searing a ) urisdicuon with a population of at least 10 , 000 and a population density of at least1 ,000 people per square naiile . Each regulated SIS is required to develop and Implement stor-. rater rx�� ar agement program ( S \V[1\4P ) to reduce the contamilYatior -r of storinwater runoffand prohibit Illtctt discharges , An NIS4 is a conveyance or system of conve }ratices that is : O \vned by a state , city , town > grillage , or other public entity that discharges to waters of the . S . il Designed or used to collect or convey stornwiwater (including storm. drains , pipes , ditches , etc . ) ; Not a combined sewer ; and Not part of a Publicly Owned "Freatriv ent Works ( sewage treatment plant) . NPDE S Permit terms run for five years , The current Municipal permit was issued jarivary 7 , 2007 , gvent into effect oto l ebr .ram 7. C , 2007 , was modified on dune 12 , 2009 , and explr-ed on February 1 2012 . A draft permit for the 11m pernZit term is currently undergoing review, and Ecology Zeas extended coverage for the existing Permit until the new perrnrt is reissued . Ir�zl lerxrer titrg alae pity ' s NPDIV S permit requires a Clc� t��l rel� crlsive Stormwater 1\11anager� ent Pr •{)gram that includes : a Mapping stornAwater• Systems 0 Educatinor employees and the public 0 Detecting and eliminating illicit discharges 0 Coil trolling storm voter runoff from new development , redevelopment and construction C' i t j- O .f C a tit a s 1 . PRO FIs(.�1 ' � � ( t,h:}[1� IGCft11 � chi< � ts�,�.tr?ro5ti ,► i � r C: a�» �ai ln� rc2 � crner� r I 'l ,in '� 4arift ( ,' I3 , 1` rr 4 . ci(, rx , T, II . r = Section 2 egulatory Environment Continued An operationsand maintenance progra €n Annualreporting N PDES Strorrnwater Permit — Construction General The NPD1 aS Construction Storzrwater General Permit was originally issued in 1995 and regulated sites with greater than five acres of disturbance . It was re - Issued by Ecology November 16 , 2005 , N1,7here coverage changed froze. 5 acres down. to one acre and reissued again on December 10 , W20104 In general , the permit regulates cleai:in �; , grading and / of excavation that results its the disturbance of one acre or more f6r sites that discharge stormwater to surface: waters of the state . In some cases , smaller sires may be subject to the per it if 7�. colo�,r determines the site to be a significant contributor of pollutants or expects discharges from the site could reasonably cause a violation of water qualit. Y standards . "I' he require meta t � of the C. 011st: ruction C.� ene-ral Permit include . C; oi� pha €Zce witl-r applicable state water quality and sediment maz� agei�i nt standlai. Mot toring Requirczx� ent: s I elaorting and I. ecordlceping Solid. and I.Aquid Waste Disposal Additional Restrictions for Discharges to 303 (d.) listed or TMDL Water bodies Storinwater Pollution Prevention Plan (SW1. PP) The Permit requires monitoring for turbidity and in certain cases for p1J . When benchmark values for these: constitue? rigs are exceeded , the SWI' PP must be revised as needed , source control and treatment I� MPs must be implemented , and :ill activities documented in the site log book . In addition , 1 ,% colo * must be notified by phone and daily sampling continued until constituent lev is are reduced to acceptable levels . Any discharges to "I"NI I:a or 303 (d) - listed waters that exceed numerical effluent liinits for turbidity and pH constitute a violation of the l: erinit . The Construction Permit applies to : land disturbing operations that disturb one or more acres , or Sires that a -c Dart of a lamer cozrrz� on flan of development or sale that disturb less than one acre- of total land arca if the lamer common plan will ultimately disturb one or 1011oxe acres . C✓ 011lPrehe11S1Ill? Sto1' tilnlal er DraInag (' Plaas 9 �' 117}IC.) If .C.: ' ' , tGt}t}tJ41bt1(il�l �; cjz;err . � �rc> r» ti� :rccrC : � � ial1»iaxoticmrttit }' tart \ DrA't (All Vr ktlocx Section egulatory Environment Continued 2 . 2 . 2 303 ( d ) List and TM DLs 303 ( d ) List Under Section 303 (d) of the C:WA , states are required to prepare a list of surface waters. whel,re beneficial uses have been imp These beneficial uses include industrial use , aquatic habitat , drin. l�ii� g valor , and recreeltion , In Washingtoza State , l � colog�r conducts biennial water quality assessments to determine whether surf , ce: waters are meeting state surface: Mater quality standards . .; cology '' s assessment of Nxrhich surface craters are placed on the 3o3 (d) list is guided b �, federal laws , state: water qualir�Y standards , and. the Policy on the Washington State Water Quality Assessment . This water quality policy describes hoar the standards are applied , requirements for the data used , and how to prioritise ' ] ' M1N� s . The goal > f the policy is to provide a guide for selecthig which surface grater is impaired by pollutants and how severely, The 303) (d) mist represents polluted waters that require the development of a Nvater quality improvement l*Droject or "I, Iv DI:a , A 'I,i��IDL is the alTiount of pol.lutan. t loading that a glVel7 water body, can receive and still ��-aeet water giialit)r standards est-ablislze i to protect beneficial uses . The l=�{AIVirollmental Protection Agency (I.... 13A) approved N ;7ashingtonss current water qualit)r assessment and 303 (d) list on January ? £� , 009 . In Camas , the water bodies and constituents include the follo \Nang. • Lacamas Creek ( dissolved ox),Ce11 , temperature , bacteria and p1J) ® I.Ace mas l .,ake ( total phosphorous) Washougal River ( fecal coliform) 1>Yj? er reef ( dissolved oxygen) Lower Columbia River ( temperature , total dissolved gas , dioxin) l colog>> expects to sul� x� it a new Z{i- ; shxvatcr Assessn#fent and 303 ( d) list t o the 110 � l' � for approval during the Rw n tc of 0122013 . TMDLs Currently , the City has trot leen identified as a party th iirnplementation responsibilitzcs under any existing °I,N1DLs . .z', ne w ' I'MD1: . is currently under development by Ecology assoclated �.Nnth the listlI41gs for Lacamas Creek on the current 303 (d� I_list . Ficology ' s ' 1 `I '' lld prioritization and. scheduling process is a five - step , five- year process that includes public 110tice , public invol. relnent , scoping, data collection and anal ftsis , action. plan development and implementation . Implementation requirements are included in NPDES waste discharge pernilts when issued or through permit modifications . 100PM ) 1 :(: T 14MM116E)60\ )tCporl .; sl >rm of;lfer C 'M) Iraf In1provVillen ; ( All Ver •1AoC � Section 2- Regulatory Environment Continued rade - 1 C: W 90 , 48 4 inter Pollution Control , and in the absence of an established `i" l�flDL 1_11X01 .7gy lzas the authorit)7 to condition the Construction Stormw. atcr General Permit: with additional requirements to control dlscharge of pollutants to iti-1paired eater bodies listed on the 303 (d) list . 2 . 3 The Safe Drinking Fater Act (SDWA) The SDWA is the pziniar� federal law governing protection of drinling water and applies to all public water systems . Under the SDWA , the EPA has established National Primal Drinkang Water Regulations that sct standards for maximum contaminant levels to ensure drinlL.111 eater quality . The SI VII, also authorizes the 1 �, 1' I� to regulate i �zjectiox� to protect underground drinling nater supplies . 23 . f Underground Injection Control ( UIC ) Rule To satis (y the hntent and requirements of the S1: WA and the Washington State Water Pollutioia Co ntrol Act , chapter 90 . 48 RCW , the Washington Mate Legislature adopted the UIC Prograi.-II , chapter 173 - 218 WAC . Under this program UICs used for stormwatez discharge and / or treatment arc considered Class V UICs . Class V injection wells are usually Shallow injection wells that inject fl above the uppermost groundwater aquifer , Some examples include dry wells , french drains used to manage stormwater , and drain fields . Examples of Class V injection wells that are allow. cd In Washingtoil , and relate to stormwa. ter , include dr)ywells and infilt-ration trenches used to drain stornawat: ei rLinoff into the ground surface . All Class V injection wells must be registered Nath l.vacology , except wells receiving residential rcaf rmaoff frozIWI a single fian- ily home or to control basement flooding at single family honw, es (including duplexes) . These wells are exempt from the registration requirements . ° 1. O provide clarification on \x�h � cl� stornl4�rater' 12 flltrat.xora t-c� chl xc ues nc: et the Class well definition , the Department of Ecolo. M� ' s UIC wobsite includes a n-acmorandum from the 1 SPA ��rhich identifies spcci �zc itIfiltration practices / technologies and discusses whether: oJ~ not they are constitute a Class V well 3oornazian , & 1..leare , 2008) . The guidance Inforn"tation provided in the 14PA memorandum is summarized in Table 2 . 1 . C 0111t' rehe11SIVe .S' Q1 ' 11111) (7ter DY47111fl �ge I' / an 11 \' AMICIJJPtan \ DrtftC : 1I' %7c* r •4 . ctc,cx Section 2 �--.- Regulatory Environment Continued Table 2 . 1 : Class V well Identification Guide From EPA Infiltration Practicae /'' echzaofo Cons ' dered. a Class V Welt ? Rain Gardens & Bioretention Facilities No . Vegetated Swales No . Pocket Wetlands & Stormwater Wetlands No . Vegetated Landscaping No . Vegetated Buffers No . Tree Boxes & Planter Boxes No . Permeable Pavement Ido . Reforestation No & No — typically these are downspouts are Downspout Disconnection redirected from sewers to permeable surfaces where runoff can infiltrate . Yes -- when they include an assemblage of Infiltration Trenches perforated pipes , or are deeper than their widest surface dimension . Commercially Manufactured Stormwater Yes , typically these constitute a subsurface Infiltration Devices fluid distribution system . Drywells , Seepage Pits , Improved Yes typically these are deeper than their Sinkholes widest surface dimension . " I'lle gore :i iiag 1 �� criteria used to make the deterininations in " Foble � . 1 Includes ' A Class T has a subl surface distribution System A Class N7 well is a hole that is deeper than itis Widest surface dinlerlsioil If ether wic of these: criteria apply to a particular stornixuater infiltration ]practice o technology* , tllcii it would lDc considered a Glass V well and would be subject to UIC: regulations . rI'l e following sumix � arsr from I�colo ' ' s December ? } C� C�'uidant4efoi • U] C�' U ells Mal �'�4c�nage , S'p`ot 1n)(71eim speaks to tlZc� �- eclt� izex�� e �� ts £c� z e �xstii ) g JR. wells a �� d re: �I �zi �-cments for IxAu11ici alities xNgth NPDI S stormwater Pcrrnits . 12 Cil akf C' r� �» n .� \' tl' etc:) j1 :C:'1 ' S6tJ ! ! ` 1G{lfit11. 1{c � utt ',titntYtt .tttrCeliplt :tl Iittprovctiicttt NatAD11tlt UP Ver 4 -do 'K Section 2---- Regulatory Envi ° can nt Continued Existing UIC Wells { UIC wells constructed before Iebruary 3 , 41020006 are considered h)T F' cology to be " existing» wells and have different requirements than wclls constructed aftcr . E; xistxng UIC wells za".ust be registered. with I:lcolog�r , except for wells �yeceiving residential roof runoff f om a single family hone or to control basement flooding at s1ne1e fam.11ye homes (including duplexes) . An eissesstnent of existing; wells must be completed to determine if the existing U11C wells are a high threat to ground water . UIC Nvells that are high threat to ground water must be retrofitted to protect ground water quality . New CHIC Wells UTC wells constructed after Februa :y 3 , ?tot} arcs considered by I col © 7 to be " i1e ��.r" well , and must meet 1cologys Non - endangermciait standard . This Gan be clone through the pzesuMpti "cre approadj ( follo � r�g the guidellles 1n Ecology ? QC) C , or through the dcib of-istratlNre approach. , wehet-e evidence is provided that the non - endangermez1t standard is mete Requirements for Municipalities with NPDES Stormwater Permits Municipalities that are under an NI' DES stormweater permit may also have stormweatcr discharges to DTIC Tells . " 'he Stornoi-water Management Program required by the NPDI:rS stormwater permit includes hest management practices that also may be applied to stormwater discharges to GIC wells . To avoid duplication , Munzclpallties that are under an I\ I' I: ES stormwater permit mxw meet UTC program reclu € renzents box appl�,ing their WO Stormwater Management Prograien to areas served by DTIC: wells . See Chapter 1731=r2M } 90 { ?} \rf r' C . Since the PD ' S l etiTut clods not fulfill all the requirements of the [.SIC; Program , the following must be added to the Stormwater Management P ograni (S \NrlMP) and implemented : UIC; wells must he registered New UTC wells must be constructed according tri the specifications in tuts guidance A well assessment must be completed for all existing UIC: wells Existing UIC Nvells that are determined to be a high threat to ground -\grater must be retrofitted More it orienatiof� on these procedures can be found i�n Ecolog�T �A. a C; vrprtehen 101) e ,S` totow )vaIer DY * aIage 1) / a n 13 1' ' 1E1�U � E '.( :' I 11lt�tlt}1 iGil6ilti, lt, �nrt �� ` ttl [llllratc r L ;aE?It :il Improvement 111arADrtft OV V r 4 . docx Section 2 ---- Regulatory Environment Continued 2 . 4 Endangered Species Act ( ESA) The purpose of the federal FOSA is to protect species and the ecosystems upon which they depende " I`wo p imar}r goahs of the 1�� Si are to prevent the extinction of endangered plant. and animal lite and their critical habitats , and to 17ursue sullrival and recover }r of these Populations . It is administered by txvo agencies , the U . S . Fish and V i. ldlife ( USFWS) fresl� �vater fish and all other species } and the National. Oceanic and Atl� ospl� eric Admillistratlon (NOAA) ( aritle species) . The ESA prohibits any " take " of species listed as M endangered . 1 , ke is dc6ned as to harass , harp , pursue , hunt , shoot , wound , lull , trap , capture , or collect . In 1999 , 12) groups of Pacific Northwest salmon and several populations of bull trout were listed as threatened or endangered under the E. SA , and in July 2000 , CAA NN11"S adopted a rule governing the " tape " of 14 groups of salmon and steelhead listed as threatened under the 11S1� . Salmon Recovery The Z 5� and ��' ' asl � ill tole State la v require dc ��elal lnci� t of plans to recover salmon . The Governor ' s Salmon Recovery Office was established by the 1. 1egislature to coordinate a �v statC. 1de s '< 1111I1 arecovery strategy . The Lower Columbia Fish Recover}' Board JJC; I �I�I3) is charged With coordinating salmon rt� cover-}r its the lowe-r Columbia River basin , includingCamas . They have developed and documented a plan to support salmon recovery for Willamette / 11.ower Columbia River volutionary Sicrnificant Units (Esu ) iii washingtoli . OIE The City of Caguas , along N,vith other members of the Plai ing Unit ) t? nan1111C) uSlNr approved file p1Jai� developed b }? the 1 . ,C: 1=1'lu onec �: luber 1 : , ? 0f14 . "1" lzc:~ W, tc:rShc; d Management 1 ' lan \eras adopted by the parent COU11ties of Clark , C, o �vlltz and Skamania counties on duly 21 , 11) 00 . Detailed iiril� let7ierzt � tiail plai-in , was completed in June of .9008 . l . ach '16 11Implenrienting entity documents its commitment and approach to Inns le111enting specific actions in Its SIX - Year Implementation Work Schedule that addresses recovrerr lilan and r watershed flan actions . Camas is currclltlr 11171 1ementlng actlC) ns and tracltln ; its activities 111 a xl,reb - basc; d data systeion called Salmon PORT accessed from the 14C1 RB A\vebsitc . a 2 . 5 City of Camas Municipal Code Requirements There are currently f'x�re sections of the City of C,� amas .'1uniclpal Code (C CIVIC t}.gat pertain to stornlwater mana, YelTment and pollution prevention . Stormx, 7ater Drainage ' tllit)r , C_ MC, 1. 3 . 88 ; StormovTater Utilitr Service Charges , CMC: 13 . 89 ; Stormwater Control , CI IC. 14 . 02 ; Illicit Discharge , Dumping and Illicit Connections , CMC 14 . 04 ; and l: rosion and Sedimciat Control , Ci 4C 14 . 06 . These ordinances are discussed in detail below . 14 C r ty Of C: a »1 as 1' ` E1ZC)j } C : } '13tt �tttf� l [ 4Gt}4Keper� sltic < r,zt, ,r �rr t t: 31 } Capital � a�tia? rr.7 :rtt� crit 1 't:ulUn� � � cr 3 c3c, cx Section 2- Regulatory Environment Continued CMC Chapter 14 . 02 Stormwater Control `Phis r-. haptc � applies to neer development � �� � zedevc�lopinent a �ld Includes requirements that address the Following topics ; Reducing and preventing stormwater pollution during construction Deducing the introduction of pollutants it- 1ttsurface %vater runoff Installing flow control and / or storzn �xfater treatment facilities , depending on sire and the character of the project, and implementing low impact development practices `:1"iris chapter also sets mitlinluln Standards consistent WWI i ecology ' s stormwater fla � agc �nent Manual for Western Wasl� zngton as modified by the; Gt}l ' s Stormwater Design Standards Manual . CMC 14 , 04 Illicit Discharges , Dumping and Illicit Connections This chapter applies to all new and existing development , public and private . It defines prohibited , allo \. Table , and conditional discharges to the znuilicipal storm drailz ss rstemn and / or surface and ground waters , It further prohibits illicit connections to the Mu111cipal storm drain SrstC' n ] . CMC 14 . 06 Erosion and Sediment Control ri,his chapter applies to any person undertaking an�r land disturbing activit=T , with the exception of , matl parcel development which is regulated under the small parcel requirements of C hapten 3 . 03 of the City ' s Stormo mater Design Standards 4anual . Requirements include the development and. implementation. of an l�: rosion. Prevention and S (&*,% d1ment Control Plan as well pis the decrelol� rriel � t and lrr�ple �nentatton of a Sto .rfaiiwater Pollution Pre * renti011 Plan for sites 011e acre or larger inecting certain criteria . Bcst management practices must be applied to the site and be maintained to prevent sediment from leavint� the site . _ CMC 13 . 88 Stormwater Drainage Utility/ CMC 13 . 89 Stormwater Utility Services Charges ' these chapters define the creation of the cit Z/ stormwater drainage utility , the creation of the stormwater drainage utility fund , and the rata structure and fee charged for the stormwater utilit)r . Sec Section G for n� o � e ii � fortnation . . 6 Growth Management Act ( GMA) The Washington State C� 1�•r A was adopted in 1990 zn response to concerns. bout unplanned and uncoordinated growth posing threats to the environz-nent, sustainable ecollOtnic de relopment , and the quality of life in the state . The GMA requires state and local government to manage the state ' s groawh by identifying and protecting critical areas and natural resource lands , designating urban growth areas , preparing comprehensl.Ve plans and Colfpr • ebensii) e ,S' � r) 1 ' 11J crier raina ,ge an � ti` : '11ftt7jE :C ;f ' 1, 1 (r(H-H) ' iG11b(1'� 1Zc�� cirt ;: , �tc� utit:ttC• r C�;jErtt;tE ltttprr�ti•i•mt•ttt � ? I :tn11 � t' tit C :lit �`C• r •1 . .fciC � Section 2� Regulatory Environment Continued implement hem them through capital zr� vestn� cnfr and de �rc�lopznctz� t regulatiol� s . Critical .Areas Ordinances flr` he GMA identified five critical areas that each city and county in Washington State must 1dent1f3% , designate and protect , Wetlands (C; , 6 . 53 ) A� rcas Av1th cr , 4cal recharging effect on aquifers used fog: potable ��rater ( CJI�• C 'l t�� . � :) } Frequently flooded arcas ( CMC 16 , 57 ) Geologically hazardous areas (C MCf 160 *3 Nish al� d N%Ildllf'e habitat conservation axeas (( Opp ` M (� 16 . 61 ) 1 pproaches to crztical areas protection can incorporate bothre �;ulator�T and t� on � rc; gulator-�r methods and involve a spectrum of stratcgies � ' l 'lzese r <� s� g� from cc� nsc: L~�Yatio �� policies , designation of open sl� acc ai d regulation a # land uses tl.� at 7 a r itr� pact cz�itical areas . r:� he City ' s activities are. sub ) ect to the City ' s Critical Areas ordinance ' s including those tegulations that relate to habitat conservation and restoration , 2 . 7 Shoreline Management Act ( SIVA) The Washington Mate SNIA applies to the " shorelines " of Washington , which are defined las marine waters , most lakes , streams , z-i�rers , sho .rc: lands , wetlands and doodplaills . It also} " shorelines of stat�;�ric� e significance " including all waters of Puget Sound certain Puget Sound shorelines . ` hc; Act is administered by the Department of Ecology and addresses three basic policWf areas : shoreline use , environmental protection and pub c a {� CGSS . Under the SMA , all cities qnl counties with " shorelliles ' ' must develop ind adopt a Shorclitle o. Master Program (SMP ) , x,vhIch according to 1lcology is " essentially a shorelinespecific col biped coi�-iprcl� c� nsive plan , rowing ozdinaz ce , and develops ient pernlit s > ste �a , > } Orbe C� it: �rys activities , as applicable , are sub ect t.o the CamasS �fl: l,�' , including those that relate to habitat consci7vation and restoration , 2 * 8 State Environmental Policy Act ( SEPA) The SETA prov ' des a process for identa £�� ing and t �raluating posse c� � lvironil� ental impacts that may result from governmental decisions and conditioning proposals when adverse impacts are anticipated , The SE1P process applies to state and local agency decisions that relate p o � ects , sueh as private development pz.•a � ccts or construction of public �aci � tles , or non � Projccts , such} as adopting regulations , policies or plans . Proposals are reviewed by the " lead " agency (stage , city or county) based on Mformation 16 �. I / � of G a iid a ,s' `` 1PIt }) 1 ;tv'I' Ilii.}{!I}tiitt)t,(}1 } tcE� �+ r� sl�rc»yi1L ,� rtc t ,aIpaal t: Ii ' Wt. •Ldcic % Section 2 - e ulatory Environment Continued pro b " the applicant , ar� d envlrOMmIlCntal 1MPIe Cts ar: e cValuated and documented In the areas of earth , air , water , plants , animals , energy , Cnvlronlaic tit health , land use , tr- arlsportati0113 public st' l'�riCes and utilities . f=ollowing the rc\rle \1.7 and evaluation , the lead agene l Nvi1.I either issue a Deter ruination of Non - signiflcRIICe (DNS) , a Mitigated DeterMnation of Non � Si9nlficance (INIDNS) , or require the preparation of an I ; t �7iroxrir�ental Irrrpact Statet�z exit �l IS) . The DIES , TVIDNS and EIS can impose conditions on the proposal to address envirotimental impacts identified in the review and evaluation . These are tools used by the lead agency to provide information to all agencies that must approve the proposal . Proposals are rarely denied unless an EIS identifies 1 kely signi #`icant environmental impact: that cannot be nmugated to �Mt }lin acceptable limits . . 9 Tribal consultation and Collaboration Pursuant to Federal l:? Section Study Area Characteristics 3 . 1 Introduction *This section describes the stud- atea for this plan and the current and planned zoning for a arras Within the stud )r area . It also discusses the physical chatacteristics that influence storniwatcr rnar nagement , such as climate , topography , and sail types . Lastly , this section discusses characteristics of the existing storm drainage System . 3 . 2 Study Area "nic study area for this (; omprchensire Storimn \\later Drainage Plan includes the Camas city limits and its current urban growth area . Qimas ' s Urban Growth Area encompasses the Cit7 limits plis areas North and west of the N City that �' 11 be annexed for future expansion , ' t 'l� e cut•zet� t �it�r lri-� its Coll of al pr �a ii7� atrYl r x , 71 ` acres , � rlaile tl� e uz iz � cor e� ratec areas of the L.7 �rA are approximately 25110 acres The citlimits and urban growth atea are shoft vn in f=igure 3 . 1 3 . 3 Land Use and Zoning How land is developed can affect both the amount of runoff generated from a project and the quality of the sto :r water as it leaves the site . Commercial and industrial areas telld to create more impe rious area than residential sites . Depending upon the exact use type , industrial areas potentially generate more pollutants in runoff than residential areas and may Lecjuire a different. t Tpe of t ;reattr eat . Therefore , understanding laid use can help detei' InY1� c what regulator and management measures should take P1 ,41 cc within a 1) siM C; anaias currently has 36 different zoning categories . 'I hese different categories have been sunainarized into more general land types as shown in ' f'able 3 . 1 . Table 3 , i : Camas hand Use Zoning Project Zoning Category City Zoning Classification Single - Family Residential R - 5 , R -6 , R - 7 . 5 , R - 10 , RW12 , R" 15 , Rw20 , 131 -6 , R1 - 10 , R1 � 20 Multifamily Residential R � 123 R , 18 , MR� 10 , MF� 24 Commercial BP , CC , DC , CC , IAC , OC , RC , CH , CV , 1111X , R X , Industrial HI , U , LOP , ML , A C" oiilpr ehelis 1 oe S1` o1 ' Il n) aier• Orad n ge Plan 19 J1 :� �1 ' I IGtH3U11G{)bt}1. 9t� arts` �uuY»tiratrr t;;t � uaE lmrnr, tttcltt ll ;ut � E) rtft C: 3I1'rr t , dncx Section Study Area Characteristics Continued ` able 3 . I : Camas Lard Use ening Project Zoning Category City Zoning Classification Agriculture AGS 20 Special Districts P/ OS , P/'VEIL , FR 4a ' 1�'hese areas ,-,, re shown in F'crure 3 � � . "l. ' e special districts with n the: C1it �r of C; a �z� as consist of harks and open space . 3 . 4 Physical Characteristics `1111C at-talysis and management of stormwater is influenced by phrslcal characteristics of the watershed , such as precipitation amounts , soil t) (pes , level sand type c� {� dc�relopinent , and � o 't his section pmvides a description of these and other that: to1� c x�� pll 111fluence sto1"mwater mana9coment . 3 . 4 . 1 Climate "I 'lie City; recenres an average of 5I itches of rain per year according to the National Oceanic and Atmospheric 1� dministrat-ion data , Deceinber is histo icall �r the wettest month , and duly the driest , With normal precipitation rrarYing from 0 . 5 to 6 . D inches per Montho The a �rerage annual temperature is about 53 dcgxees Fahrenheit (° Ii� , �vit11 a Summer time ave a e of 65 ° l; and a winter aver aac of 40 " Fa 3 . 4 . 2Topography The Ci �T of Camas is characterized by varied topography including the flatter areas downtown on the barils of the Columbia , the ridge; of Prune f4ill running east- west through the City just north of do \ rntown , the lox. r lands of Grass Valley northwest of Prune 1- till , and the valleys and bills surrounding; I acamas I.Akc; , including the North. Urban Csrowth Area (INTU .�- A) on the northeast side of the lake: . `:t'lle elevation \Wk4thln the City ranges fronoi about 20 feet above sea level along the: shores of the Columbia and Washougal Rivers , to approximately 750 feet at the top of Prune 1*4111 . Nfuch of the development is centered on the downtown area , on Prune 1- 1111 where the slopes allow, and along the south vestern share cif t..,acamas Lake . Currently , the: top and bottom of Lacanlas I_.ake , along with much of the northeastern shote , is forested . Grass Valleyis a patchwork of hon-les , busitlesses , Oben grassland , and stands of trees . Figure 3 - 3 shoo rs contour elevations for the C:it� F . 0 U � 1` : 1, 1' IiC, )� F :C � 'l lbtl( {1'11 (itll (}S1 �cpc�rt > '1 �tcatt� � .ttt r (.yaa1 Improvemenr 11t ,tio1 ! o t CII } Vccr 4 -dosaL, Section --- -Study Area Characteristics Continued 3 . 4 . 3 Soils The type of soil - granular., sandy , clayey , etc . hasq. strong influence on stormwater (Management , mostly in the detel. mination of whether: atcr can be infiltrated or Whether it neelds to be detained and conveyed to a surface water boder . The majority of the soils within the Cite are classified by the Natural Resource Conser-vation Senrice ( 1.'%ES) as Flesson , Powell , Olympic Lauren , and Dollar . These soils are mostly poo €'ljr dralned and consist of medium to moderately fine textured terrace soil . Figure 34 shox, is a map of the soil types in the city , as m ipped by the NRCS . Except for isolated pocli. ets and areas of I-- Iillsboro soils in the .vest part of the city , soil conditions are genetally not favorable for infiltration of stormwater . For this reason most developments built sii� cc� flow control has been required use detention systems and do �� c� t ri infiltrate storm\*- rat{' r . However , as Inost soils MCI ICA sone Infiltration capaC € t + } the C: ity ' s stornwi«ratter ordinance ( CMC 1. x- . 0 ?) requires testing fear infiltration and the use of i �� filtratio1� where possible . Eveir. if detetYtic� n is neccssa �-VP infxltratior� through the detention pond will NO affect the size of the facility . 3 . 4 . 4 Geologic Hazard ,Areas Thera are approximately 891 acres N 4thin the Cite that are classified as steep and unstable slopes . The southern slope of ' rune 1--1111 is either historically or potentially unstable . Slopes along the dralr� a�e ��Fa�Ts cot�ing do•�x�n Prunef fill , t�� tl� e north and east , are also potentiall)7 unstable. . rI he hill slope : in the natural area. draining to Lacamas Creek are also active and unstable . I�i�ure � - � z-naps 1w ion' n and l� otentiall�r unstable slopes as noted in thepotentially City ' s Geographic Information System (G, IS) . 3 . 4 . 5 Flood Hazard Areas 1.4lood h4azard areas are-. areas adjacent to lakes , rivers , and streams that are prone to flooding during peak runoff periods . Construction of buildings and ether development in these areas is regulated in accordance With the City ' s floodplain ordinance . l:Nigure 3 - 5 shows rapped floodplains in the C14r Mas area . 3 . 4 . 6 Wetlands etlands Wetlands are defined bar the EPA as areas t: }� at are Mundated by surface or ground tXrater at a frequency and duration sufficient to support vegetation, adapted for saturated conditions . Wetlands support valuable and complex ecosystem , and development is seVCerel7 restricted , if not prohibited , in most wetlands . C ' o .1w re }ic. lr .+ v tarmrr a eit Dimaiitage P1an 21 ti' APROI EC IAI00 NA IGs?��t] `,, itc�t� ns1 *rc� ori� �� .ttcr C ::��� t � :�t 1111proviallicur I 'Lln \. Draft t : 1V Ver 4docx Section Study Area Characteristics Continued Section 40 4 of the Clean Water Act regulates discharge of materials to wetlands and a permit fron-i the Arnviy (,,, orps of l Angineers 1s required for most activlties that potentially Impact wetlands . Wetlands \x7ithin the City Of Camas are generall �T adjacent to the Columbia River and Lacamas Lake and in the lover flat lands of (:) rass Valley on the Nest side . Figure 3 5 shows wetlands as listed in the Cit ' s GIS . 3 . 4 . 7 Surface waters Major water features within the Cit)r include the Columbia River , the Washougal 1 ive. r , Lacamas Lake , 1.acamas Creek , Hallen Leaf I�ake , and Round l . ,ale . The Columbia River begins in Canada , enters the United `Mates in northeastern Washingtolpi , and travels southwest through Washington to the Pie cifa. c Ocean . 'l%lhc river' exits the Columbia l.Uver Gorge shortly before it travels bast downtown Camas . ` I,he Washougal Nivel: flows southwest froi�� the Cascade l��Ic� u �� tains to the City of Camas , where it empties into the Cohimbia IWert Upper Lacanvias Creel. (above Lacamas 111 .ake) receives flow from a tributaries , only one of � 71 ich 1s �,r� thin tile citlimits Ter Creel , ` , lie other tributaries C Nina Ditch , Matney Creel , Shanghai Creek , and 1={lfth Plain Creek enter Lzcanaas Creek in rural Clark C oUntY , 1 ,41calMs Lake is a 2 . 4 mile lone lake that recell\res zuzaoff fxoixz the surrounding hills andfl ow from Lacali� as Creek . It is connected to Found Lake by a channel that rens under State Route 500 . The water level in Round I . ,ake is controlled by a dano at the south end of the lake , which is run ley Georgia Pacific Consumer Products LLC , Lacamas Lake has significant algal growth in the summer time , which can impair the water qualitV . J *1. o rc1sr 1"Jacanaas Crcebr below Iound I:aake , travels do��fii a steep slot-) e ai d over waterfalls to its confluence with the Washougal I Iver . Numerous streams and crc cls discharge from Prune 14111 , including Flue Creek and 1" orest l- Ioi�1e (". reef on the south side , and DN% Yer Creek on the north side: . The F' sher 5 «Falc follows the west limits of the city as it beads south to the Columbia. River . See 1=Aigure 36 for the location of tlfticse creels . 3 . 5 Existing Storm Drainage System J`hc Cit7 ovinis and maintains a storm \vattr conveyance system that: drains app .roximatt.4y 7 , 500 acres . This storm. sr 7stem includes approximately 75 riles of stormwater conveyance pipe and 1 , 800 sty} rmwater inlets and catch basins . It also includes nuinerous culverts and drainage channels . All storm Pipelines are separate from the City ' s sanitary sewer systen14 22 1 � � D . f C a v; a s 1 ' : � !'}t( ) � 1 �C : 1 � 1C11t� t7 `SIG{�Gt�llttsSUi't � 1�tt » S� f ,cEc ' f ; r, s» Ea3 lylEirto 't �»cyt. i') art � Dr.► tt CIN Ver 4 . c10ca Section Study Area Characteristics Continued "rhe Cit-�� has a longstanding police of requiring comn"ierclal and residential stormwater facilities to be pr� ivat: ely owned and maintained . As part of its March 2010 stormwater cede update tl� e1i � retaira� eC� this police ;itd codlflt' d 1t. under Cha 14 . 0 200 Ownership and �� ait�. ter� ance . 'The Cit ? estimates that there are 110 private stormwater facilities within its boundaries . Private facility ronaintenance inspection occurs priti'milY on a comp lain t. driven basis . Ito «cvcr , the cit 0i ' s currant NPD S permit requires that all private storM \Vater facilities wilt after- fiebr: uat�T 02010 be Inspect ( d �rearl1 bar the Cityx The C; it)T is rzo��7 resj� c� nsible for annual iiTspections of private storm%Vater facilities and for ensuring that property owners inairo. tain their! facilities . At the ti Section 3awommoommovinvoStudy Area Characteristics Continue . At IMP VIA All MWOM • l o ' t 4ow410 ago 500 all - lob or to. kA Al R r' r rOj i 4L ,� vs ! v 4 6b 'r IVA1 s �° �+Ift � J • ` e4 _ e,r . wA ■ I Ilgo IMPr » * _ r 11 logo V ti. 4Al l l - 4 AV Of Al MINI �.-, IhKE s t. � t s � go - - y? - IN y t ' ( i k el ifAlf l or whos III VIVO * AMI xt I I- 0 Ill ol -1 : A� n . . . _ Legend 1 fwd M ` y k to ' ILIA,, .a {' . ,, �.. I�Ate At All%Sjp Unincorporated Urban:v WVIVV logo. 7IOMP WAO Growth Areas good s Gr Gama_,may ` i ` Y �....� � tAge t City Um�ts too powe - egoolgo AV � j .• � Mft, ti . ftool • r _ A Watershed Boundary 4406110 • t A, 104 At .'+ 'r • I d... ,.. . . L-!'. J • y�PrV fLf►l-i �fJH"w;,tiarw G�i( .,••r. f l. .... ei. ' fR...- �drWw s.•J•++ w�:./ Figure 3 - l : City limits and UGA Boundaries C nAvprcLer• r' e StcpriooatrrPraixayc 41 '4 :\ PKC1tf t."i � 1i,� K3i �� tt{(Kt►\ itcpc►rts\Storme�tet � api[at Improvement Plan \Draft (JJ' Ver 4.1 Section 3 Study Area Characteristics Continued too O � •r 1 � ' it V rL T :Yl� 3 , t,U1 B. OJU • � : terra . Ale / - . . r . of �r o • ` ` ' - _- . r � � { Y t t , * (' it' or Ld � too ft `t* Me t ^) ter r 14 O i j . 3 ' 1� I Al t / 116 l 1 i i � / 8 i ♦ YI _ qP Ria rr t) _, ;r Legend tF, RF `, LAKE o ;t gg - w f 46. ,.,r' . . �.�» . . L .. Urbar, Growth Boundary ' t FRIw • r all f �■�- 1 �!.li.0� (,, auras City Limits dot !Pon" 7axlots 1116 - 110 *atarshed Boundary, •,, r . �� rP Nm Y City of Camas LandUse F agriwffurc �' ,•'** - . . : r r *01 industnal � � � �� �: � ��t , y ' ✓ .a"' { .. ' rnuhifeirr. ,ly w» �- _ �r • single farrti4r er. ef- , r. 46 MID� yam ,.. Special d! striot5 Figure 3 -2 : Current City Zoning Io Ci A, , n / ( rt to tr V \ IJR( 11 C r : 16AXIIf1t -ol1ttal Intltrrvtmcnt I'La 1 Dc•Itt ( :11' Vcr 4 docs Section 3 - Study Area Characteristics Continued - - --- - - - --- #0 t • r • L e r t s 0 1 , 5C'Q w, s. 0iu t ► Wal to • • • • ' • • • r e . . r . . lk • c + � ' Y •` a � ` ` • •« ItP. It 4 j i40Its E:j I Y rf * • twyf ►= M • A ,, • ` . Al a w h Rho 1 polls 110 OFF, t Y Y 1 1 • • • - �' •F - FS PFF ItNot ryf • • 1 Ii • ; : ` • +r • { r • - '` spokes. I 1 -w . - �. IS • a=/ ' y . rpt. t • _ - - "ALA .- S8 • 7 etrFOP : . • All Apt r OOF K lt� ( SAF 1f a E � kI OVA . \ -LAKozo At » At OF OFF t yI w jjj r ♦ AWL r7 I owl iI't 11 . d 44 OF pat Opt • - lfdtr Fri - J r • � p }4 - +' ' � �` '~ .4 04 W��� Legend Fsp� ' . -. : f >.. . , • _ :,� 5011 Corsteur y' y pry _ y. fy(( /v { � 4f•iNr t, IF 4 g�ti_ �'J „ t .Y , ♦ '�.r . - ... " 1 ^ It Contour t e , ,, ;� .� -IF FF . ' r �# Urban Growth Boundary pop, .,a ,+x „`"�.. 14 :,-y-r "� ♦ Camas City timfts T sxloh WMtershed Boundary OFFp Figure 3- 3 ' City Contour Map lives .r f � l �� F_ + 1 ! 3 A { A ' s J f t r fl ; J S ft 1 < +t rR• �� } t .f fv •ti ffoMs i ,•* . 1r = 4iAW4Wi}• rf ,rift' 0f#P4rF4 0-41 i . 4A Section 3mawasimieviiimfifiStudy Area Characteristics Continued .�— N Soil Descriptions trt 11 fw • r .. � ._ - a •.y -a.•- . e 00 rar...i ` n�r•� a r qf•, NI , �. �. � 1 0 . _ AO :s, l}v0 (3,000Act 3 � . • , r . s , . . . . • .IN, ' ` a .: f1 : iF n, n•:lwh <'h rar, 0411h :. /.. : . . vi s_ e 10110 OF '� . Lp ' rk. ,,• . Ola^ rV ; tr.'in .. for , the 4•, 4 : - 1�' 'K 4104+1✓• N+ '- Ztt A%va a JI 4116 tt UtM s1 ext � • ! n a . sf t40� • .p s •6r/9 Ne. a6K. t�,lsYp•f• , s ( 4 1.f�. - .w4 •.e.xlvrte +► . . a• ) M•-w+1 •w'1'•' -_ a!► � P .I- 4�.••w• i nt..y . CraA r •eq • ,r . a • "r. o w•.r,r�« ta ta ) r t.� .. . ,v.. a1f 1tr .1 st I�'y� tea+ `w . -: %1411F AOL •�� ft • y i'•.• V �,•+ ttae.f! •w' -•w l.r1• , • ' r Pao* Wert s+.w•rl ,s•.- st. . •..., ,-. � . Jwt let, AlOrr.y �•+••,arr•wi.- ' -t �. y. f-•,. .. t.a.. .,06az••r ,. _ . .•.-ft' x , _ it IN Fit. FA 4 IF A ' F -five i Ai ififi& & .V •aa V•Mw ' .ti . .p . . : .a@" 4 � • l It 6% , Mf 1Y 1. t � 7 K4 ' . , . H/�• ` , . V 'i• 1 'rH�[' •�IR1 •yt+ 4e�9 P } ` '• >< r ;uof ,. se a Y .r. i .J/ fifittle4W Odin fi, . c1t• Fee •aR . . _ ' +[� �� ' s 'r '•S .T_Trtt //« � Jr gat n ., ti a . r: Pr .. . -.r toy r. �L► e ;7" . 4 �c„1, : r.. . • r . uKs . . . = -. We I it Iti; Ar imemser � t :� • ri. !�.+.ff - . . _ aiY A _ - a t • 1 ^ s � .1• s A 'I-.« - 1 `'* J , . _ r • AY eta 1 'own y' v 141fi al, 00 41re lit Ale f ft '410 'Bag f I feet IF VAIMP . .r FVV . . .. _ fifiefie ,_ ret Legend See- L Fir �'' fist . � +. � F . ! « r IF , w • . Urban Growth Boundary or y , fQw YK'tf-f... . Vii. _ ♦ t ' camas 1 4 th.-•Nefie -; t �. 1tyl.IPt71 "riviri 4+ - J • . � M .�r lFx '' i pi is^114Z it CQL IF r Watershed BOUC dato, + '21 "` T sK 14 - vfififififiv i 4 " Oke Pond stZ . let IV R03ervoir r•...d .�•- +. .r` , [ _ i ".a.�' ..v _ t1 / ., .titi ViSwamp l Marsh t Ft -•I Ovi .ry'N A �let �• I '>,pr W'l9f".e. )?W' Ji►_• Y :ar'y1„t •-,t. t.-� .�• J,�,t.. :aC. • �•_x.•a �•++ Figure 34: NRCS Soil Categories ?� Cl P17 i 1' Ol'32cill? Cly, ifdxN ►1tGO!f� \ Rrpuna� Stottnuucr C3pirpl Improvement 1'! rp \ brAr ( ' 111 ♦ rr 4Aoci. Section 3 —Study Area Characteristics Continued . ♦ r .. s . , -- � 1 t ROW�co 0000 6 ONO 0 Alf 49C z! a i a . a r�Alit K ti f to rft ., 1 1 j py s f allwtfi • �a • p ! 1 '41A 64. CB 3 1, fJ y1• IP IT �Lr � . Legend Urban Growth Boundary 19 0 • a . ` `� - Camas City Limits r Taxiots ♦ ` _ -nom- _ _. _ :; ' . /� ao �—� _ ., ,. 1 Watershed Boundary a. a AIL 1.. 14 tifi -*. A R: E to" ' f -" ► 1 Lake ', Pond . 0 r . iR ► i •fir ► : • '�. . » -. Resa nroir fOe r a - Swamp 14 Marsh Environmental Constraints •3 yr Flood Way Wetlands Pr COL Geologic Hazards v 'kB l� - �« -� Acute unstable slopes _ A 14 WO . . ,.. - Historical unstable slopes w . -•-'' WA fe * o ►: �.. � Potential unstable slopes Ir Figure 3 - 5 : Environmental Constraints and Unstable Slopes CvYi; f„ rhr' nS1nrmu rel = r [7r _rrr. a Plrin 29 i; pk • .lL 4 %XLN'. WkAOF. .rhrt M.Ra- 11#0Py„ til1te1avraMfY1.n D,Af11-11' r. td.; - I Section 3wommoommisommStudy Area Characteristics Continued _ N i 41 ~ 1 • IOTA ! 1 _ • _ 0 1 375 23503 5 , 5L" f A ! f Y ! 1 • • IT } � � 1 w i • ON p mi 40 • ► o . , r sr 5A0 L5` -- • NN LV %wlVNw #.qft lift y F AV r L ' • l w a v �. J . Y ! ISI yy A To 4 t bt C 1 !+ L . Jto f 1 °a '! r, 10 • 1 � • ,- ,y �` � , It 1.w RR v� r • • . . f 4t w ; Legend • r , ! rrrr AV r r a s s t\i .: LL a � y J LL -1 L4 Li E LEAF i.rU � rs — �1...•+.... L a C � P n , o LAVE � ,pr to , r Y,^ . , . , • . . . 62 W3 ;� • = Watersheds .• 3 `/� Columbia River 1"\• f... . . lam• • rw _ C 3 _ ..or ! ' 77 .yy ,a. .,�.myy 30 od koo - N40. vol mop w 1 W2 .P:f -� - Y Y 1Yt • i . ♦ r• a • p • � Washougaly r 7 •• fir . ' moi. vnKia� _ ► . .. r � { ` Mr';• -• ZW - C • '� NI - '��► ► : , � . _ Y. 3 Watershed Boundary = f- ": Y �j @asin Boundary No - t. , Lf tt . , ,�.J Camas City Limits IL C9 . ,,3�-- Urban Grovin Boundary 14 • . T f r wT- M.` * 1aAots i i 1 Figure 34: Watersheds and Basin Boundaries - _...,.. ..._,.r-... _.. ... -.._. .....�--- .._....-...w...... ..........-•....`........�...�..... ---___� _ _ - - _ __ __ _ __-..._..r.�.�......+....,...-�-........,..te. ..,,......-�,•-.... �.._ ..........-.......-. � •�-�W .1.M .` . . . AiI. . -trrlFlCS[. t � -J . ` Y '3J.ti� N .a .tya. ,r yu.. .,. i \' ii'tt� �} E t t,. JQWW'I(1',. iQW4Ai% Krp4 ) jf '+,., t4MIL AIct :Iut cE IinpIU4` •CMM MM"; DV-41 _tip c► da •<_. r r -J a.. ..« 0 C , _ , . . cot C v CLr-� fad Iwo ti r r+ CSD Dr"tCD (€} w Q Sl? - - dr Ag& �- "} Cis �'4 , � �` ' . ,� 113 •� ,.�,�, � �-' ` .' �N ,r--. � � �j �. � � ^ t�-t -� � � ,� � MMI m � � � = •- C CL r �...} C3 CL("J , C.>� t_ i i 0 � IV CL fL '_ ° fl GO Section 4 �Study Area 'watersheds continued The characteristics of each watershed that influence stormwatet managen-ie nt are presented in this section . "ililis iticlucies soil t: ypc� s , geolo lcal hazard , , steep slopes , current land use 1, 11d future: development potential . This section discusses existing stormwelter systems within each Nvatex. shed , and it also lists the nu �x�t �ber of outfall pipes larger than ? � - i �1c17es , as these outfalls are regulated under the City ' s NUDES S' tormv,7ater permit , E colog y ' s Stormvrater Management Manual for Western Washington ( SN1M \NtD and Can*ias ' s Storzu �vater ordi � 2nce requires water quality treatment and control of flows over pteJ�Air'opeatl conditions to be provided for all development acts�rltses t.: hat geric tc 000 squarc.� feet or rnc� re of impervious surface: . 'The Sl�•� 1���1 01 V emphasizes infiltriation and low impact over trac� iti �� i1al f1o \ 7 detention facilities . The use of these ieneasures is influenced by laud use and soil characteristics , along with ho steep the slopes are and whether there~ are eolo9ical hazards . rl`his section discusses storm mater management. options with these factors in iTund . Stormwater Nianagement strategies. are designed to meet the city ' s goals and objectives , as described in Section One . The key strateM7 relating to stormwater is to support economic development �uNle I rotecting the elivVirollment . 4 . 2 Columbia River Watershed Watershed Boundaries The Columbia River inarks the southern bouladar 7 of the City . Although all runoff in the Cit�, eventually makes it to the C; olurnbia River , this watershed as defined Within the study area just includes areas that either drains directly to the river through nriani�lade conve�rancc pipes , or areas thfit drealn through sniiall strcams to the river . The limits of the Columbia River watershed , along Nvith individual basin boundaries Within the watershed , are shown in Egure 4 - 1 Thls wigs rslied lies primarily between .' rune 11 , 11 and the C: olun M River , extending to the C it}' 9s east and .vest boundaries . This watershed includes a portion of downtown Carnas , the Georgia Pacific paler mill , and the: neighborhoods west and northwest of downtown , including the southern slopes of Prune 14 ,1111 . One area , Basin C. 1 (See Figure 4 - 1 ) , lies on the west edge of the C,lt�y northwest of Prune 1-fill . ~Phis area clrai �is to theC✓ olu ��zbia l� irer through the Fisher Swale . Soil Characteristics N RCjS mapped soil hype' s in this watershed consist nvi (1) stlyi of Powell , F lesson , Olympic , and Cove soils , with some Dockets of Vador and Sauvie soils ( see FF :lure 3 - 4) . All of these soils have moderate to slo \v infiltration rates , and as such infiltration of stormwater throughout this area is eery limited . Current Stormwater Systems The portion of the: watershed encompassing downtown Camas (Basin C; 7 ) is primaril �T drained 7 1 f f C Cl 111 CI .� VA11tOil 1 ; C" 1 '11 (iUtl{1\ IOU \ 12clxo0S \ StollITwal (arC:pItA 1oil) ( ow(1) 0rtt MATI C II ' Ver 4Acyls Section 4- Study Area Watersheds Continued zl� ro �zgl x� ai� i ade conveyance s rsten-. s t:o Il� c Colutr� bia �.li� « ff I -i these basins is discharged through small creeks and conveyance systems to the Columbia liver . Since the development of these' areas predates water qualitY regulations there arc: currently no water quality facilities . Basin C. 6 encompasses the C7eorgla - Pacidc paper will . Blue Creek is piped under~ the in I site to the Colun-ibia liver , conveying stormwater from. Basin C3 . 17he mill has an industrial NPDES perillit from Ecology that has its ow l requirements for discharges from the hill to the Columbia River . Runoff from Basins C12- 05 is conveyed by small streams to the C: olumbia. River . B isin CA drains west to the Disler Swale . This Swale runs south to the Columbia liver ( see figure Current/ Future Anand Use Characteristics Downtown is the traditional center of Chinas and is the oldest and most developed part of town . It i: S a Mix of commei:cial , light industrial , and some housing , Ads this area is densely developed , any future development: activities would consist primarily of redeveloping existing propt' rti � s or deNreloping infill parcels . ,rhe slopes of Prune 11ill are zoned cxclusively for single family residential development . Steep slopes and historically unstable areas may limit new dctvelopment along the bill slopes . `rjic- areas north and west of downtown , bolo, r Prune Hill (Basins C2 , C3 , C4 , axed C; 5 ) , are more sparsely developed , and propert IMpro *renjCnts would consist mostly of infill and redevelopment . Drainage: from these areas is conNyreId red to the Columbia River through 1, ore , t Aome Creek and Blue Cr �� el� vhicl� is piped through the George - Pacific paper mill site to the river) . Basin C1 (See Figure. 4 . 1 ) is In this watetshed , as it drains to the Fishes: S\#rales which drains to the Columbia liver . This basin is primarily undeveloped. , except fora recently constructed office complex and a snviall subdivision on tine north side of I° W Pacific m BouleNrard at the Citlimits . This basin has large tracts \\rith significant wetlands that have discouraged development to datad his basin has areas loved for industrial , commercial , slz gle - fan ly and nZultifaix� ily r• csidential ` ' development ( see 1 igure 3 -- 2) , Stormwater Management Stotamwater rnanageinent for development activities must meet the requitement5 zn CMC 14 , 02 and follow the SIN VAVW , Options fog• Meeting the most l� ertizlent rec� uireirlents , i , c , T11iniix�uin Requirements 5 , 6 and 7 are described below and summarized in 'Fable 4 , 240 The C: Il ' projects that support these strategies are also listed in the table and complete descriptions are included in Section 5 . C. t7111P1 ' ehP. nsIUe S I o r IN )41a i e r Dr ' �rr' r1 �re PIan 33 VAIIRO TJI :C: IA 1b(}thl\ MOtit)\ RupiIfrM.A Iofflit mif CapitAi Irt ptovecmwnt PtanlI )ritt ( AP Ver 4 ,do .N Section 4 tudy Area Watersheds Continued Table 4 . 1 Columbia River Watershed s •tormwater Strategies All projects must implement BMP T5 . 13 ( Post Construction Soil Quality and Depth ) ; s BMPs T5 . 1 OA , B , or C ( Downspout Full Infiltration , Downspout Dispersion Systems , Perorated Stub -out Connections ) ; and • BMP T5 . 11 ( Concentrated Flow Dispersion ) or BMP ( nMsite T5 . 12 ( Sheet Flaw Dispersion ) if feasible , stormwater matiagement Where required , bioretention facilities can be used with underdrains in areas where sail permeability is low , The use of permeable pavements in this area should review the requirements and exemptions in the 2012 SMMWW , and follow the guidelines in the " Low Impact Development Technical Guidance Manual for Puget Sound Development activities should provide their own facilities Runoff Treatment designed per the SMMWW and the city code . Convey flow directly to the Columbia Fiver through manmade conveyance systems where possible . Where manmade Floe Control conveyance systems aren ' t available , or where there are capacity constraints in existing systems , either upgrade the systems or provide on - site detention , Related CIP SS02 , Storm Sewer Conveyance Modeling Projects SS05 : outfall Protection 0111 sr`te st-o.rill Y4,.d to fa. lq, c112 ell t 011 - site stoUMXMtcl Ml1age17 ent Includes dispersion inethods and Low Impact De-\re: lOpMent {I� D 1�� easures and are required to he used to the 1na :� inzuin extent feasible for all development activitles that result in 2 , 000 square feet , or reate� r , of neer , replaced , or new flus replaced hard surface area , of leas laid disturbing activities of 7 , 000 square feet or more . All, development tivill he required to amend their sails (BMP `T`5 . 13) and dispose of roof runoff ore: ref three z� � etl� ods { �' s ' J � 5 . 1 Cl , 1:3 , or C) . See the SMM\X7\V fora complete description of these BlTs . All sites X411 also be required to Implement concentrated or sheet flow dispersion Bi where feasible . Development activities required to meet flow central and runoff treattivient must also meet all LI ' : '''rI11; () 11 :( 'T \ 1 (2NX) 16tl6O\ 116 (1•E) txts \ 'Storttti4•.ttOr ( ;� 1) ( IA l »ti) roVV t3leltt f6 C1 Draft {: Ili l'[ r •I ,cltrt Section 4 �Study Area Watersheds Continued pe: r formancc standard described on page 2 29 , Volume I of the Si\/IM%XT\V' . Soils in they Columbia Ii rer Watershed have moderate to low infiltration potential . As such , s0111e sites ma }' be able to use LID measures to treat and infiltrate some portion of the site; stormwater . NKThere reates are low or q iestionable , ulwider- drains can be placed above the bottom of the rock aa chamber Within biorete: ntion facilities to convey ter after being treated through the soil media . Placing the under- drain above the facili. t)r bottom « rill allc� �v f�� t sai� c ir� filtratian . 11c S �� lv�NX1Tl��r provides criteria fox the use of these s )rste.tjjs . Development activltles that are exempt from Minimum Requirement # 7 (Flow Control) do not harc to meet the SI� II��l ��1'��f" s LID Performance Standard , norare theyreguircd to implement bioretention ral1I (Ya >•ciel-as , permeable pavement , and full dispersion . For the Columbia, Iviver Watershed , this meat s that if the; development can discharge directly to tl� c Columb River through a man - m /a is conveyance faclIity with arallable capacity , these facilities are not heeded unless used for runoff treatment . .h u.n o ff Ttwea tai cii t Runoff treatment is regLzll- eci for any 11Cw development or r : cierclol i czlt neezt1, tl•ae sire thresholds listed in the C;itVB s stormwater ordinance , I... itig dense development in downtoq%vn limits the ability to place water quality, facilities ; streetscape lJID facilities (i . e . storzxiwate: r planters , Pervious pavement , greell roofs ) and inechanical treatment systems will llkcl7 be the most feasible I options , Although soil Conduit ns are not cc nducivt� for infiltration , bioretezatlon facilities can still be used with under drains . Thele will provide robust: stormwater treatment and some flo*v attenuation . N e \v residential areas on Prune 1-1111 can likely accommodate larger water eivalit)y and flow control facilities in addition to LID and onsite stormwater management Options . Particular attention should be paid to sediment transport and downstream impacts since: they creeps draining the hill are very , terep and have potential to catry high sediment loads ( see C IP projects BC 01 and BC 02J In Section � �. .,ala xv Con &o] 'I:'lle C'001u enbia River is listed in the E]) SlN•'lMVPW as a flow control exempt water body , which mcans storm%,, ater discharges to the river are exempt fi:c> m the city ' s flow control requirement , provided runoff is conveyed directly to the river in a nnan - made conveyance system sized to convey the flow . Derelopment activities that discharge stormwater to conveyance systems Without sufficic�z t cal � acit T , or to other water bodies or creeps , must meet the Cir 't ' s flog control requirements . The Cit 1 " s downtown core currently contains a storm sewer system that conre s runoff directly to the C olumbia I Iver . The: system has been ii place for many Nears , and the maintenance staff have 06 Com rebellsI tl � q ' 101WNIR/ a101 ' Dr• llPlla e P ail 7 � 1` . i1 ' Ver� 'ROJ CIA1Gt0\ IGX ? vImprc � ot � .c1c�rx Section 4 -�--- Study Area 'Watersheds Continued not Identified any areas of flooding car other signs of capacitor Issues , " l 'l� e capacity c� � the System Will he quantified with �:��r'��r1 �'rojecl. .S'.�'C��, S'1or111 Sem? r ' 11l1ode#1io (See Sectlon 5} . 1f capacitor constraints are idei� t1fied , the model can lac used to detcri nii� e pipe size upgrades . BC asins C1 - 5 discharge to small streams that convey starma nater to the Columbia River . Development or xederelopiriezat in these l basins would need to l� roNrlde detention . Basin C6 is the mill site , N'rhich is completel�r developed , I unoff from Basins C8 and C' 9 could discharge dij- cctly to the Colum [Dla RiNret0 if the conveyance system has capacit)r or if the system size was increased . 4 . 3 Lacamas Lake Watershed Watershed Boundaries This watershed, encompasses the northern , mostly undevelolacd , areas of the CitT as well a ; the, north side of Prune 141' 11 and lakeshoxe areas . 1:.lacainas Lal c is fed b�7 Lacamas Creel , Rwhich III tLIM is fed la )7 hire different creeks , many coil leVilig \eater from outside the t�T limits . Dwyer Crcel� , \OT,rizich conveys runoff from a large portion of northwest Camas , discharges to I_.,acan&ias Creek . Note; that all discharges to Lacais Lake , either directly or indirectly , arca required to treat for Phosphorus . The 111TIits of the 1:lacaM14f S Lake watershed. , along �\Vlth basin boundaries Within the watershed , ,ire Shown in 1ligure 4 - ') , Current/ Future Land Use Characteristics 1A.Irge portions of Crass Valleand the nortli shore of 100acamas Labe are current1v undeveloped . Grass Ville is Zoiie: d primarily for " ndustrial and coi�ni�� c� rcial development , a1' d the Northern Urban CYro \�jY:h Area (NT UGA) is zoned for multi - fan�il�- and single faiyil �r developments , al ) ng with sorne commercial and light industrial . The northern and eastern slopes of Prune Hi � i11 arc n� il�, residential developmentbutut therearesomei� i� cd - use areas ��� t11 zoned primarily for single - fa multifami1residential , cc fnn ercial , and o1-� cI1 space tracts . Thesouth lalLesl � 3rc.� areas are zoned primarily f� >z silagle - faY lily residential development �tr� th same lndu. strial and laarlopen spaces on the east end of the lake . Currend r , the south side of the lake is developed as single - family residential properties but the north side remains mostl07 undeveloped . Please see 141 gure � - ? for ztaz� ing . The residential at as on Prune 1-1111 and the south shote of 1 .. acamas 1:,,alae are unl*hely to see new development except infill or redevelopment . The industrially zoned areas in Grass Valley and northe= rn parts ofthe City have many wetlands, which limit the developable area , The laid north of the lake is zoned for Eghtrindustrial , single family , and multifallily development . Soil characteristics NR (". S mapped soil t Tees to this watershed consist mostly of Hesson , Po vcll , olyrnpic , and 'fader 36 C i l e) + 0 C el 11,E a s �,' - i, IARC) 1' J ( :7 "� � GtHK}'� Ifzi)f>i)� 32c�ttr � . 5,, ytc>rtt•s:ttc• r (; :cpit;� s Iut �trcititciicrtt 1 'ltct '� i7ihit ( : 91x 1 ` t•r -J .c1<>c :, . , ... , , z IN. , . ; . Section - to y Area Watersheds Continued soils uritl sone areas of Odnc , Dollar , Cove 1. -Aurcn , Puyallup , li © ckitlson , McBee , Semoail1lnoo azul '1"iscl soils �s �: e f{i �7x� � . - � . mast t� f tllcse st� ils a1- e od �-at l�T to poorly drained and limit the infiltration of stormwater , except for Lauren sails , which are present In the NUGA arcia . This sell is generally moderate to rapidly draining and inay support infiltration of stormwaten 11, en. scs of z � oderatel }� - clraiz � it ; leu jallul , JI FI epic , aid - lesson sails are; present near Round Lake and Fallen Deaf Lall. e , and infiltration facilities have been installed in these areas (see Figure 4 - 2) . Current Drainage System GrasL Vallev and the northwest slopes of prune 14111 drain to I) \,xrycr Creel . Most of the residential areas on Prune Hill 0 vere deoreloped in the "l 990s and include prlvatelyO\Vnc" d s tormwater treatment and. flow control facilities , lnforixiation on the storx�� 4�Tatcr infrastructure i �� the industrial and confinlercial areas is inconriplete but some private water quallt � facilities exist. , There are two NPDES regulated outfalls to D1,N ter Creek (see 1=4igure 4 - 2) . Developments along they south side of Lammas Lake do not include flow control facilities , as direct dlschatges to the lake are exempt . `T'here is ons: mapped l� l� I� LS regulated outfall on the west side of Lacamas Lal<. e ( see figure 4 -- ?} . jlc� st of tl� e areacel rilexrest side: of pound Lake lacy runofftreatment and flow control facilities . A shall area in the far western corner of the basin as well as the c' a stern side of the basin was developed during a time when treatn` ent and flow control facilities ��rclve i ctluired { sec Figure Lt ?) . Stormwater Management Stormwater management for developneient activities must meet the requirements in C; lv1C: 14 . 00 and follow the S �rll�r \XV\V' . Options for meeting the most pertinent rcquirements , i . e . ��Tinil�rluf�� Requirements 5 ) 6 and 7 are described below and summarized in 11'ablc 41 . 3 . The CIP projects thq. t support these strategies are also listed In the table and complete deFscriptlons are included in Section D . Table 4 . 3 : Lacamas Labe watershed Stormwater Strategies All projects must implement 011 " site storinwater BMP T5 . 13 ( Post Construction Soli Quality and Depth ) , mr� eme n « BMPs T5 . 1 DA , B , or C ( Downspout Full Infiltration , Downspout Dispersion Systems , Perorated Stub " out Connections ) } and « BMP T5 . 11 ( Concentrated Flow Dispersion ) or BMP T5 , 12 ( Sheet Flow Dispersion ) if feasible . Where required , bioretention facilities can be used with underdrains in areas where soil permeability is low . The use of permeable pavements in this area should review the CQIlJPre� beir .frr; e Srrr x a i e r Dear /Iel ,g1- all 37 � ' c111t (�,� 1 :{ :•t ' � ICIk?{t� 1C11GU � I� cltcfrrr. ltitactitr,trr. t { ::� IT� tal Irnlrc? •trtcut I.tl:tnl.. l7rat[ {:! I ? 1't• r •S .dttC � Section 4 t dy Area watersheds Continued fable 4 . 1 Lacamas Lake watershed Stormwater Strategies requirements and exemptions in the 2012 SMMWW , and follow the guidelines in the " Low Impact Development Technical Guidance Manual for Puget Sound " . Development activities should provide their own facilities izxof' " ` �eat �x� cr� t designed per the SMMww and the city code . Convey flog directly to Lacamas Lake through man - made Flowo � trr� l conveyance systems where possible , where man - made conveyance systems aren ' t available , or where there are capacity constraints in existing systems , either upgrade the systems or provide onwsite flow control . This may be rnet through detention or through infiltration , depending upon the resuits of on -site infiltration testing . Related CIP ULB 01 : Leadbetter Road Culvert Capacity Review ULB 02 : forth Urban Growth Area Stormwater Plan Projects 012 ��4 r to s'tntrli i -a tet Hiini 4!eirj efi t 0111 site storm\, later management includes dispersion methods. and Low Impact Developinent 011) measures aid are. required to the: maximum extent feasilale for all developi�� cnt activities that result in ? , 000 square feet , or greater , of neer, replaced , or new plus replaced hard surface area , or have laid disturhilig actiNvit:ies of 7 ,000 square feet or more . All devc: lo � i�� ei� t Will be required to amend their soils (l MI ) `1 '5 . I 3j and dispose of roof ruiaoff ii1 one of three methods (lMI'Is 'I' 5 . :10 A , B , or C:) . All sites NN7111 also be .required to implement concentrated or shelet floxv Is 13MI " s where feasible , Development activities required to ii"ieet flaw control and runoff treatment must also meet an 1, 71) pe .rforn,. ance standard described on page 24 - '29 , Volume 1 of the 51N41jv1W W Sails in the Lacamas 1.,al,e Watershed have moderate to tow infiltration potential , except in the T L a area ���l cz' e the potential fox 1t� ilt �-ation zx a �, be tai l ei . Y s such , some Sites MaNT be able to use LID measures to treat and infiltrate sonvie portion of the site stormwater . Wgicre rates are low or questionable , under- drains can be placed above the botton-i of the rock chamber within bioretention facilities to con re y water after being treated through the soil media . Placing the under: drain above the facility bottonvi will allow for some infiltration . The SN1M\X/Nc! provides criteria for the use of these systerns . Development actiOTitles that are exempt from NIininlurn RcquireIT ent # 7 ( Flow Control) do not 38 C t/ y Of CaV/ aS 1 : � 1� It{ )� 3i{. 3 1FGt1tY }� F {:(►C,t)S1{c� trt: `E � tc� ra� tu',► tt- r ( ;tE� ctttl Imprt:vemetir 1'l :ttt \ Drtit CII `icr 41A()CN Section 4 ----�Study Area Watersheds Continued have to ;7 eet the � l�f r }r ' � :-1� 1 czformancc tazxclard , nc r z-e tl c zccluz cc tt� i nlalement biorc: tet � tior� , Mil l gardens , permeable pavement , and full dispersion . I { car the I .,aca.inas Lake if the d � velop �� ent can discharge directly tU Lacarnas I.-,al•; e through a Watershed , this inc . f � s that �� ar� � rnade concre� a � ce facil y ZIT t � a �railable capacitor , tl� esc facilitics are not needed unless used for runoff treatment . A capital protect has been are defined and is included in Section 5 to determine what is needed for the 1� �� GA area too meet the flow control c�: ernlation . This project (ULB 01 ) has two components . One is to prepare a stUrmwater basin plan The second is to asses :, the capacittT of the culverts under Leadbetter road , as these could be used to convey water from the NUGFA to 1.acamas Lake t meet the flow control exei &.ption . If the culArerts are found to be too small to convey the deloped site runoff, appropriate pipe sizes can be determined . Runoff re`s ttn eri t Runoff treatment is required for an new develolainent or redevelopment mecung the size. thresholds listed its the City ' s stormwater ordinance . TMD measures or more traditional treatment measures as described in the ST\11M\X W can be used . Note that discharges above the darn at pound I.Ake are required to treat for phosphorus , Flo u4� Cori trot Lacamas Lake is listed its the ? CSI ? Sir MNX-T\ as a flow control exempt 1 ,vatez bode , which rneancs 4tormwater discharges to the lake tiree c ��l� t frc3n� the cit T 's flow�r co ztral regulation prU �rlded tulloff is Conv (: red direcd )7 t () the lake in a rnan - nide conveyance system sized to convey the flow , Development lactivitie. s that discharge storm water to cUnveTance systems without sufficient Cal) aczt)7 , or to other water bodies or creel ; s , must meet the City s flow control recluiremetits . The north side of Prune Hill and C7rass Vallcy Will Beed to meet the flow control standard . Reg' onally based f, cilities play be a feasible option for Mass Valley if private partners are lvilling to pool efforts . The NUG' i may have soils suited for infiltration . As such , flow. control requirements may be met through installation of UICs or shallow LID fa. cilitles . If UICOS are used , these should be registered .NTith I:lcology and rul. e � authorized before acceptance by the citY . This report includes a capital pro ect to generate a stUrmwater basin plan for the NUGA area . V :\ PROD I %* C :JA I0l0C37. 16060 It : �, �t�tire» �� .jlCa• 11 ;; flip rc;venu : iu IIIaf M ?waft CIII Ver •I .d ( )CN Section . tudy area Watersheds Continued 4 . 4 Washougal River & Lower L.acamas Creek Watershed Watershed Boundaries The Washougal liver wac tershed. drains the southgwcstern portion of the City (see fligux: e 4 - 3 } . Within the City limits this �1NTatc'. �. .shed encoiiipasses both sides of the Washougal Ri�,rei` , portion $ of do viltown Camas , and. tributaries to 1 .., over Lacatnas Creek . The watershed boundaries arc approxiniatel)7 S1. 14 on the south , 3 "' {o venue and Gtarfield Streets to the Nest in downtown Camas , and al) Drc� xin� atcly S1 fioui- se Road to the north ( the Nvatc�rshed extends cast beyond the Cit limits ) . Current/ Future Land Use characteristics The: downtown arcwa in Basin W1 is zoned prinnarily for single4amily residential development V.71th some commercial and naultifanzil}� residential areas . .1' he downtown N�,Tas zxi {) st1j7 developed between the 192( s and 1950s . Some infill and redevelopment may occur , but the existing development is fairly dense . Thi ri�Ycxfxoz� t areas along the Washougal liver in Basin W) arc: zoned for industrial , CU1`T1IT ercial , an {l multi � fainil r az� d sir gle � faznil r residential . � e�relol� nient in this basin is from Clue 01940s to 1970s �\xnth some infill in the last 15 �rcars , Additional infill is likely , especially in the areas zoned for inultifatjj.il )T residential properties . Most of the large tracts that border the Washougal lei Tei- will not be de�Tcloped because they belong to Camas ( Parks) or are encumbered by other facilities . 'The Lolve� r 1,.. acanvias Creek Basi W3 is located «itllit� the urban g� c� ��Tth arca and is zoned for single - faiwnil�T residential developmenr and park open space . rl,l� is area is cilrxentlIs j undeveloped and NNTill likely sc: e new development . See Figure 3 - 2 for miring . Nifuch of this is laarlm property oNvned b Camas & Clark County . 1t wont be developed , Soil Characteristics Is watershed consist of Oly� apic: and Nader soils with large areas of I IZCS mapped: d soil types in this fill near downtown Camas and Dockets of Ilesson , Pdwell , Roclaland , F1111sboro , Washougal and Sauvie sails throughout the watershed (see l�igurc134) . " 1, he soils are rated as moderate to poorly draining and rdll not likely support the infiltration of storn"neater . Current Drainage System St: orms%vater from the downtown area (Basin W1 ) is piped without treatment or flow control to IRL discharge to the Washougal River Un the south. side of the basin through an N7' DE14JS regulated outfall (set. Ficure 4 . 3 St { 3xn-iN Tatc� z frons some of the nC -wer residential developments in Basin W2 is routed though runoff treatment and f ow control facilities 13rio16 to discharging to Lower Lacamas Creek just upstream of its confluence with the Washougal River . This basin includes one Nf' DES regulated Outfall , as shown in P'igure 4momI `` : 1E ' }t< ?J � :� : '1 '1 � c�4�;I:t�, It�4}� 4)� t�cj� c� rt � ltitc ; ctnratri C :,� E; ct :il ImE; rv�•i•, t:tc , t. l >I ;tct1E �,•,� ti i, ll' 1` cr •i ,tE:,c �: Section 4-�- St Area Watersheds Continued Stormwater Management Stormwater manageme � t for development activities must meat t:l1e requirements in CMC 14 . 02 and follow the Sl\-f1\ll \\YW' . Options fog: meeting the most pertinent requi �: elm� nts , i . e , i�� ii� imum Requirements 5 , G and 7 are described Belo * v and sunirmriled in Table 4 . 4 . There are. no CIP projects identified in Section 5 that support stornawater strategies in this watershed . Table 4 . 4 . Washougal River/ Lower Lacamas Creek Watershed Stormwater Strategies All projects must implement n-- site stormwatcr BMP T5 , 13 ( Post Construction Soil Quality and Depth ) ; nlanc � c nt BMPs T5 . 1 OA , B , or C ( Downspout Full Infiltration , Downspout Dispersion Systems , Perorated Stub - out Connections ) , and BMF T5 . 11 ( Concentrated Flow Dispersion ) or BMP T5 . 12 ( Sheet Flow Dispersion ) if feasible , Where required , bioretention facilities can be used with underdrains in areas where soil permeability is low . The use of permeable pavements in this area should review the requirements and exemptions in the 2012 SMMWW , and follow the guidelines in the " Low Impact Development Technical Guidance Manual for Puget Sound " . Development activities should provide their own facilities Runoff ' �r afi c nt designed per the SMMWW and the city code . Flow Control per CMC 14 . 02 and the SMMWW will be required . I° '�'� oxtx° � This may be met through detention or through infiltration , depending upon the results of on -site infiltration testing . None identified Related CIS' Projects 017Nsito �'t�.�.�murs.,ite�r .t�Lwi4n * �zxz ��r� �` Onsite storinwir ter management includes dispersion methods and Low Impact DeveloPment 0 14 (11D) measures and are required to the maximum extent feasible for all development activities that feet , car greater , of new, replaced , or neer flus replaced hard surface arca , or result in ? ,�� � C square have land disturbing activities of 7X0 square feet or more . All development \, 411 be required to amend their softs (BMP '1' 5 . 13 ) and dispose of roof runoff in one of three methods (1.3INVs J:)" 10 .� ) B, car C ) . All sites �vxll also be required to Implement C(Jmpr- ehelrsrl) e S' tap , w >Ira e D ra12neioe Plan 41 ° : ' IrltC3. }:l:`11iGtttk?11 (,tlGt1 ' iirE7csrc : � •c7crtu ,tccrf;:tpt ,;� 1m �; cY}ticcnrct 11311 \ 11rati C: P V <t r 4sdoCK Section 4 tudy area Watersheds Continued concentrated or , heet flow dispersion BMP , where feasible . Development activities required to meet flow control and runoff treatnw) ent must also meet an LII. performance starr. dard described on peage 2 - 29 , Volume I of the SiNoll Nv'W. Solls In this Watershed are moderate to poorly draining . As such , some sites mai, be able to us` c 1:.4II .) measures to treat and infiltrate some portion of the site storillwat: er . \X11ier-e rates are lou or questionable , under- drains can be placed above the bottom of the rock chamber NVI lt_hin bior: et_ ention facilities to convey water after being treated through the sail media . Placing the under- drain above the facility bottom Will allow for some infiltration , The SMT criteria � rc��rzd �� s critc ria for the use of these systems . ii,n ffTreatment Sin"Iilar to the downtown area in the Columbia River watershed , existing dense developr Crit limits the water quality treatment options in Basin W1 to I:II. D facilities and mechanical systems . Residential infill in Basin W2 can likely accommodate larger- water qualitt� and flow control facilities in addition to LID techniques . Water qualit )l tr-catriaent must meet the T'MDL standards, since Lacamas Creek zs a 303 {d} listed water, bodyq please sec: the discussion In Section 2 . 2 . 2 for: more information . Iunoff treatment is required for any neer development or redevelopment meeting the size thresholds listed in the (Aty ' s stormwater ordinance . LID mcasur:es or: more traditional treatment measures as described ire tic Si�rlivlW� �T can be used . to lv Co u ttol Discharges to the Washougal Rover and to LoNvet Lacamit s Greek and its tributaries must meet the Qty7s flow control recluircoments , as these water: bodies are 11 ir� cludcd on the flta ',NT control exemption list in the ?012 SI��I ��I ��1�' , Runoff treatment zs required. for any new development or redevelopment n-ac� etln � the size thresholdlid listed in the Cwelt) s stor; n wic ter ordinance , 'The banks of I . . ower; Lacarnas Creek and its tributaries are steep ath active and potentially unstable slopes . Meeting the flow control requirements for new development in Basin W3 will be essential to prevent further degradation . 4 2 � 1 ' !) f a 111 a s 4' 13i�) � 3 :C: '1 ' \ 1 (1( K}U \ 2b(K, t) 1, Itt ��c7rt .', titni .tirr {: a�» �:� ! Tmpl-o •ruuIcat. 11tH % \ Dr.1ft 1.: 91' 1' tt i .i3c� :' h Section 4 � Watershed Stormwater Management Continued ted, --- y N L1 • • / S ` l • T ASO NO, 31GIeeddl mill- 4 G r a s s n Q $ 50 1300 3 .400 Valley • t eIw,,m.; Feet Columbia River Watershed L4lie • a F A L L EN �e - t EA- F1 ROU a f LAKE LAKE # , • s . �•. C 1 ■ s 0 4 a at 3o LACAMAS LAKE 1 L2 i0 . w sOeN 'err ,.._, .. [ YYASH4UCX.L R A � 1 / LAGAMAS CR 4 C3 COLUM131AR mxu+.+.Am...... ' _ . _ . ` _- . ... _ _� . ✓1� lo- � ' .•,'�•+.. • _ __ __ - ' WW2 ti . . end l 1 �_ Le 9 i fi • • ■ r • • ` j � is Joe M3 ' �, , 1:O^� ` :'r °` # Stormwater Facility � 4 C5 . � - er to : �` ► . G F - _ `'p ,� 24Outfall C2 M 11 1 _ 36 Out/all _. ,,.d ,•� • r r ,;ro. 4$" outfall - - i A& C19 i - ---,. Stormltine -----.« Culvert t . :. �-� _ }' lnlineStorage j 4pa 11,11, r viotatDummy 'lM SiA4t ep j dop M . Watershed Boundary - 4 Basin Boundary top �.�... �J� Camas City Limits too �. Urban Growth Boundary Taxiots MaeFigure 4- [ . Columbia River Watershed and Basins, C , 00r, pr" gr br n itr ( Struma ater F) rai +i ,tCt P aP1 43 1' ?RrilFr. -7" -. 74L�,'. fu!M; f >kfi..m �. >br,a�"aKtgnfaltmr ,ovvYs,enttYm'- liatrf' IF L' ei � .t , •. i Section 4 -- Watershed Stormwater Management Continued N i! + 0 1 000 4 ,000 4 . 000 { Feet 1 1 .. �- Lacamas Lake Watershed ZLAC4446"S • r 4 a Alt L5ANN xLAKE ° I, 0 $41 AIN - xsel rHOU f Y LACAMAS GR. r .� _ r ;� COLIdsLMBiA R . Is L3 .. _ �.. .. _ .. ON . Legend Ck I a ; • Stormwater Facility .►,� 9r _ - " , _ , _. , :; A 24% Outfall • V- i A : e . r: t • sy Mt r � � ( 36" Outfa (1 'J a t 1 c y * • a y i } . 48' Outfall N ," NV. P momr I Stormissine Culvert L4 . �' + �s iniineStorage . . . . .► QVerflow AA Dun" All a • � E A f. x o u tib �/� ! • .. .• � . t • rM # . � ' c A KE_ t Z AKS Y1 " itershed Boundary At �,,.,,. _ - I'i i �. _ , ; Basin Boundary „ r, y • "d',.,�" - 2 ' ■ Camas City Limns Urban Growth Boundary C3 Tax1ots fey.w l'.^• it l : ^IffPi "d' Nij �1 • -R ._ lfb•Ta.Y/ . m1..•+_.vy. 4frc +-, .: Figure 4-2; Lacamas Lake Watershed and Basins C_ r � y n1 Crtr.� u � : r.. ', { 4 0, F. 1 .: . • t . -mr• ,.rt : .*rr. .r Grip ,..to .m(n. Plur 1) ru41 ' 1h VVI t hc Section 4 _ Watershed Stormwater Management Continued It ITT N If '• S . * i t JI '• •v �� , AT L4 �„ i ti 435 $70 4140 Washougal liver & IT TV Lacarnas Creek Watershed FALLEN ' `•9'� � '= y A' ? IROUNO E Ai 4 IT , J 4 1 1 f t If r 0 l.ACAh7AS LAKE i W3 L2 {• - . . . N.V. ft ; - . " i WASHOUGAL R. s I } LACAMASGR J ° r I - cotarMBla R r r t Legend i _ _ . ffw • Storrrvater Facility • +" A24° Outfall W '{ ► 36' Outfall . � 48 Outran TOP -+ ' ` j y '..... '�. �, �°t�' j, , .moi. ., . , ♦ -~- � StormUneCulvert .r --- s' ;., • inlineStorage ,► overflow polle lit rAss L . Watershed Boundary i Basle Boundary ?: . r _ ■•■ camas testy Limits v -- . - Urban Growth Boundary MrII C8ITT , -.• ---t Tax? ots _ I WIN I . . <:a •: ,rr:-_y� , • .r, rt.• _?f:Ct .�.w_st.A,l �+qr:Fyt � • w... ,-:..• r : . . < ,.. . Figure 4-3 : Washougal River & Lower lacamas Creek Watershed and Basins ( : 6mprrhrn Rio r .5turmY a t r r 1) rairtlas; : 4 1'10,011f. 1 IO*Nt luh;ex R.r+m • 'At nrw, no t' gtsttl1rhrt .snrq .a slat Ortut Ir- Vrr cs}., re Section 5 ,-----Capital Improvements 5 . 1 Introduction ' I' llis section describes the capital improvement projects for this first version of the City7s Stormwater Capztal Improvement Plan . The projects described in this section were selected by City staff and arc based on : Addressing existing facilities ill need of xepaiz: s Addressing identified flooding concerns Coordinating tistornlwater facility design and construction With trailsportataon project needs Reducing reoccurring maintenance activities Manning for future development and capacity needs `cable 5 . 1 lists the recommended CIP ' s , a priority assignment (low , medium , or high'i and ail estimated Implementation cost . A Cit-�r reap with C.. 71' locations is Shown ill 1-{ igurc 5 - 1 . ' There are two basic categories of capital improvement projects ; ghost; that deal With the planning aspects of storm tivater. management , and those that involve the improvements of structures and facilities ill the (Aty ' s stormwater drainage systena . The projects are brokcn. out by watershed , and the project descriptions include the basin name and the location , v'rh ire applicable . 'Mlle project numbering is lased upon the basin the project is located in , except for projects that are C; it � tiX� de , I� eferrii �� to 'Fable D . 1. " SS " stands for Storm Sewer and is used for C; it-�T � \"V 4' d l � rojccts . " L� C. 77 stands for � t >�Ter C reek and Is used for projects in the Dwyer Creel basin . " L11:1B " stands forUpper Lacama5 Basin , and " C R" Is for Cola. mbia I Iver . Fable 5 . 1 rCIP Summary Pro Iect Name SSW 'Transportation Related Stormwater Facilities SS 02 Storm Sewer Conveyance Modeling? D (]0 01North Dwyer Creek Stormwater Basin Plan Dwyer DC o ? Crass Valley Stormwater Basin Flan � 0v/ P1 % ebensive Sto rmrrTrre I r a i n a S e 1) an 47 l` . 'tS �StC.�) t :f�•1 •'�. 2GtN}t)�, IGtK;1111ir�ac� rts'1 �tr, �n� �tiacir (:;; �� �:� 5 Imprc, rc �jr� tit l�l ,� a� � l ) r,� �c (�9i' 1•' cr •{ . ci,ar � Sectioapital Improvements Continued Table 5 . 1 : CIP Summary Project Natne DC 03 Pacific I'N. ' m Boulevard Crossing ' DC 04 Julia Street Stormwater Pond Retrofit IAC: 0 Tholnas / Carsoia Hstates Runoff Control ULB 02 Norah Urban (Trowth Area (NUGA) Storm vater Basin Plan CR 01 Forest Home road. Sediment Basin CR 02 Blue Creele Sediment Bir sin Separate pica cct sheets have l ees prepared for each project listed i � `i�able D . 1 . '�. hese sheets are included oix the following pages and include a description of the problem to be addressed and a description of the proposeA solution . The sleets also include a cost estimate and possible funding sources . 48 Ci l y o .1 C a m a .t. 1' E '}i( 1 � } C:t " ti ifr43tx�tlGe�, � 1 � }tt �1 {1CI � ti ttt111111 .�arrt : aE» t ;iEii3�p �ar�t�e� tt 111w ) `ID11ak (AP Vol to}u« Section SomosomossmoommooCapital Improvements Continued - . . N All , Ito offi , DOC _ iwxo U C's to Lacamas Watershed : ; =-- -- � Foci , . AND + woo, ? rte.'-'r 1k loow � . 1500 1 No o j\y4 i coltNool ? UT A. 14V toot 0 Foot. owe tk . � rJ j r . .. _�' ! ' D :`: kt , . - - Washougal Watershed i V ;�; , t T pCt5 - I Poo 000towo� r . r N. r' Camas City LOr%4 € UL - C R 0` zTaxtots - - � C � '/'�ttcrshnO Boundary %V lot '�,..r--, _. .. `• ter kGr 4 > ? 5ubbaKr Boundary r ox / j t CWumtna Columbia Watershed a sa mamas lake i r 'Aathaugid e I _{ l= Igurr 5 - 1 : (; 11' Protect Locations Coor• o, rehCnfire Siormaattr 0rafnoti ;; Plvn 49 l' �FRC) JPC:'l11 (a1Q11\ 1CAldl\ Rrpart�\Stctlmx otrr f apical tmpruvemrnt Pt,n ; l3afr (1P Ver 4 docx s Section 5 --- - Capital Improvements Continued iA � � ° ZN f . ( � : ), L A 'F. i1'i Cta �L 1i + {it Yi [1 , . ,S .1fCY � i ) E _ fir: i3 irp � r •, rircnr as rsEc t . tl 1' rr cf. .<: t Section 5 CapitalImprovements Continued Project Marne : Transportation Related Stormwater Facilities Project ID : SS o 1 Watershed : City� Wlde Location , City-Wide Description As the Cit T develops or improves their road, vay network they are finding that the construction Of stormwater facilities to meet their NPDES Phase 11 perinit adds sigpifYcantly to the roadwa r costs . Stogy" 17-nlrater trc4at lent , conveyance and runoff control facilities , along with property acquisition , and design aceounr for .'020 to 30 percent of a new roadwa �r . As such , these costs influcnce the ��AVs road constructio �� f�iz� d , '� '11e C� it �T is exl� le� �•it1b optic� �is to establish a dedicated funding source for City stormwater construction costs . ' 1:`l � c currcx-it stomia. utility is not designed fear major capital i �� provements and has not been able to support the stormwater portion of neer r"oad �vay construction . 'To adequately fund these capital improo cements a System Development Charge (SDC) could be implemented , The SDC could be allocated at a rata of 67 % Developer funded and 33 % City to be C011sistent with the water and so\ xer SDC . This breakdown accounts for the developer responsll ilit), per code to install the r Xni �xaui � xeelL r"elnel � ts for their do relop�llcnt and allowing a credit r) r pro riding funding for the regional component . Proposed Project r111is is for the cre itio1l, of :a funding source for the design. , acquisition , and construction of facilities to conv\rey , treat , and control the volume of runoff from public road pro ) ects as recluired in the City ' s storniffivater ordinance . This fund NN7111 be used to support the regional component of the roadway improvements included lit the C.1ity s Sig: Yeax° 'Transportation Plan in conjunction \\qth other funding sources such as 10%ransportation Impact Fee (FIF) . Cost Estimate/ Funding Sources The (; it0r ' s transportation plan is embodied in two documents : the Six Year ' Ir"ansportation 1a11 and the ' I `Z1 ; study The adopted Transportation Impact Fee includes collection and convey ,ince storm lwatei. casts but not laud acquisition or treatment / detention , which is estimated to be 11 percent of the total roadjvay cast . Funding for storm*%vater facilities tied to transportation projects generally consists of developer contributions , loan , grants and city funding sources ( RE1 T and General Fund) . C PrPberrs11) e ,SIoitm )ila e Draifl ahe an 5t VAN tOPS Xt ' ' \ 10000 \ 16 (l6 ) \ ]ic ��t>rt � � 5t � ar � mv,uc�r C;tli� ital hnprcav( n-icnt 1 ) 1AatADraf( (.' JP ` er 4 .doc ` FIt Section Capital Improvements Continued The dollar imount shown in the table below represents the unfunded stormwq' ter 1_ ortioll Of the city ' s proposed transportation projects . '� 'l � c�J corlszst of the storm components fr �� rn the TIF study (which include the li. nd casts , and treatrnerrt / detention requirements ) and fin )r additional projects Listed on the Six `gear Street z' lan (costs include design , collection , land , treatment and detention based on a 30 percetat cost of construction) . Table 5 . 2 : Transportation Related Stvrmwater Facilities Estimate and Funding Plan Cost Estimates TIF Eligible Routes Developer Regional cost ad Item Cost Sure �SDC credit eligible if enacted . and $ 43000 , 000 $ 200 , 030 $ 1 , 3207000 Treatment/ Detention i $ 4 , 0005000 $2 , 680 , 000 $ 1 , 320 , 000 Total $ 8 , 0009000 $ 51350 , 000 $ , 60 , 000 Six Year Eligible Routes Item Cost total 30 % of Developer Regional cost and overall six year Share SDC credit eligible if cost enacted Design Conveyance system Land Treatment/ Detention Total $ 495009000 $ 31015000 $ 15485 , 000 Funding Source City Grant Developer SDC X X X City of Camels l' APlit) � I. : C: I '� � G{'d}i3\ 1 (,ttGU� 3it� cyr[� 14[ Utclt.t'nicCC.a ��u :tE � t»j� tt�ti'intt' nt Pl :trttil ) r.� tt t: il � lec s .t{c>c � Section � apital Improvements Continued Pro jjest Marne : Stora Server Conveyance Modeling Project ] D : SS 02 Watershed : City - Wide Location : CltyWlde Description -T'he City ' s conveyance system is oNrer 70 years old in sonic locations in the downtown core: and the City anticipates the need to repair or replace some of these pees . In addition , the carrying capacit�j of son-ie of the City ' s stormwater pipelines has been reached or exceeded . As systems age and replacement or upgrades are considered , it is important that new systems tie sized l*) roperly to C ) Il rey eXistin.g t�. ows and to carry future flows that may result frorn new development or redevelopment , The Citdoes not currently have a model for helping them decide how to size a replacement system . {:'ZtT pipes can be sued fairly Basil. T usit3g Sii7� ple Models (i . e . Manning ' s Equation) . 'hese models can cluickl Y deternime the pipe sire needed to convey flows assuming open channel flow. l...lotivevet the1 can underestimate the capacit� of existing systems , as they do not account for system surcharging , In addion , the hydraulics of existing, pi tipe systems can be very complexV `ihis is because flow enters the stTstem from mann different locations , and the interaction bem. Ten these flows combined «71th the charactCris tics of the pipe system itself causes the x ter to do unpredictable things , even moving Upstream . The ec nations and methods to n-iodel thelse s�rstemis* ire complex but are now rolitinel4T pei.-'fornmied with coMputeio Modelsr hydrologic and h draulic model of the city ' s conveyance system would provide thein With a tool for planning; and building necessary ineiprovemenrs . This can be used for existing systems to size upgrades , and for sizing new systems x3hiere planned by the City . Proposed Project Do-7elop a hydraulic computer model of the Cit}r ' s stornri severer pipe system . ' chis model can be built in phases and would only need to include the larger pipes which serve as system, trunk sewers or backbones . Iienportant systems to model include ; Systems wl-jere eXCessive surcharging (water coming out of manholes or catch basins) occurs Co /l/ P 14ehr11S11) e �S' torrJ vi at' e r Dr • raiase 11 an 53 V '. 1PRO I 'WC 1A Itiik: A % \ Slotinuvater C ; :ipwal Improvett:etit ! hin '\ Draft ( 111 1 'er #Ldocx Section S Capital Improvements Continued Older systems xvhere rel.) laceinents are planned or likely Systems where proposed de relopment will contri.btite: rLmoff to existxlig c {� livey'a ice pipes and I�-iaexceed the system capacity CostEstimate/ Funding Sources A cost estitilate has been p .repired assuming most of the storm system to the downtown care is modeled , along \%qth limited area . outside the downtown core . ' 11he \work includes is modeling and tdraul� c �z� ociell� l of pipes 1 � lndzes and lar .el° . sub - basin hydrolo Fable 5 . 3 : Storm Sewer Conveyance Modeling Estimate and Funding Pian Cost Estimate Item Cost Hydrologic and hydraulic modeling $ 509000 -- -- --- - - Funding Source cit Grant Developer SDC X X X X Y: 4PROJEC: `IA16(3[tUl3inf? rta1cc� u`nt I'I ��t �l � c,tE`rC : I1 'Ver4 .doou , .. , . .. . { J , . Section 5 *m� Capital Improvements Continued Prosect Name : North Dwyer Creek Stormwater Basin Plan Pro j ect ID : DC 01 Watershed .* Lacamas Lake Fusin : Dwyer Creek Location : North Dwyer Creek Basin Description The North D *\v Ter Creek stud7 area is bounded by NW I.aa. ke Road on the south , l �ribei g Road on the 4vest5 NW Payne Road on the east , and the Camas Meado \xrs development on ii �7re - •1 ) . The Cita developed a comprehensi re land - use: master plan for this the north Msec' area in 2001 and xvitl be updating this plan its 2012 . ziz flail �v * 111nclude a storiii*\va. ter rnat7agement strateg7 tl�. at addresses flow updated bas control , 'Grater €ltzalit y , and conveyance . Thisflan 7 * 11 be designed do meet the City ' s recently adopted store-iq\vater ordinance and the Storniwater Management Manual for Western was' llin ton (S1VI ��Iti��' `+' . Storz iterfrom this �� rea is tributary to North. Dwyer Creel , xvhich rums north along the west edge of the stud7 area , then east to Lacanias Creek , which flows to Lacamas J ..12 kc . Lacamas Lake eventually discharges to the Washougal River approximately one � half mile frC t7l 1 � s CUl fluence \q Tith the Columbia River . Lacamas Creel and five of its tributaries (1 ) , firer Creek , Fifth Plain Cxeek , Shanghal Creels , Nrattic y Creek , and. China Ditch) are listed on. Wash '' ton State ' s 303 (d) 11st of impaired water bodies for fecal coliform bacteria , temperature , dissolved oxygen , �in. d pH . A Total Maximum Daily Load (1 'TVIDL) plan is currently being prepared by the Washington State Department of 111colo y for Lacame s Creek and four of the five tributaries . The CJ requires phosphorus tzeatz• emit in the Lacamas watershc above the dam at the south end of found Lake for all development sires exceeding one acre in size . Proposed Project This CII' is to provide Funding for development of a stormwater basin plan i " 1n conjunction with the, updated land , use master plan . This plan. should include the follo1%,%nng . V : \ PRO) I : CIA lb (l(k)\ F (�tK�illlttpc >rt , �.�!�> rn� mo,) ter C:tpciol IfItprovcnIv tit Illan \ Dr; h 0111 Vvr 4 . doo Section capital Improvements Continued Gln evaluation to der tie the feasibility of using Low f is ct Dcve1ol) ment B1\/1Ps in die study area . This d. eternalndLfition should be made in conjunction wit lh the &l \ relol: pant of toad sections to determine if measures such as bxc� rcntion planters can be placed ��ithin the right - of- way for treating road%vay sto �l����ater . • n evaluation of the felasibilitV1 of providing regional detention for meeting flow control and / or runoff treatment requirements , Alist of runoff treatienent .3l\/IPs to be used in the study area. that meet , S � f � i��f'�� r�: c� uiretnents, , ll'NrfIX. requx.renrients , and the City ' s phosphorus requirement to be used With private de'\relopMents . Sizing of major stormfi\nater conveyance pipes that serve multiple p ol)(Ttics . Documentation of the stomwiter porti ton of a larger master plan document , ® An evaluation of the ability to discharge to Lacamas 11..ake to access the flow control exemption . Cost Estimate/ Funding Sources Table 5 . 4 : North Dwyer Creek Estimate and Funding Plan Cost Estimate Item Cost Stormwater Component of Master Plan $ 30 , 000 Funding Source Citi Grant Developer SDC X X X X l'' : '� 1'lt{�� } :C:: •1 ' �11GsH)I111f,Ufct1 .112t�r.rrc.l, :+tc>rntu•.itt• r { ;:3pcca € Tcy� l� rc»•� rc�i•rtt I 'iacill7r � ft t ; II' 1' cx •Itttt : Section Capltal Improvements Continued Project Name : Grass Valley Stormwater Basin Plan Pro j ect ID : DC 02 Water~ shed . Lacamas Lake Basin : Dwyer Creek Location : Grass Walley ( vicinity of NVQ 38th Street and Parker Road ) Description The Grass Valleys Area of CRITAas is bordered bye Pac ] Fic Rim Boulevard on the south , NW Dahlia Road on the cast , Lallw. c Road on the north and the City limits On the west . ` l'he center of Gfrass Vall. ey is roug hl 7 at the intersection of Parker load and 38 " ' .vendee The area contains both lionsies and Manyr light industrial and technolog: businesses . `l.^ he Crass Valley area contains man7 ages of low- quality wetlands . Because of this wetland designation , these properties agave remained undeveloped and are used for grassland farming . 'The headwaters of \vrc.r Creek are on the northwest slopes of Prune Hill . " 'lic creep runs north to NW 38th Avenue , then west along the south skit~ of the read until it reaches Parler Road . isrom there it crosses the road diagonally from the southeast to northwest where it then travels along the north side of NW 38th. A. renue fog- approxim tel `7 1 , 2oo feet , At that point it turns tzorth throughprivate properties . Where Dwyer Creek. turns north an intermittent stream carries runoff from south to north r under NW 38th Avenue and joins N 71th Dw Ter Creek . At this location along NW 38th Avenue , nuisance flooding that impacts NW 38th A- renue occurs on a frequent basis . Proposed Project This project is to develop a plan that «-ill : Develop �i plan. for the prope ty7 oxvners ' that consolidates and enhances the portions of the delineated wetlands on these properties , all n. Wing other portions of the Properties to be developed . Develop a concept fora regional stormwater facility to meet the cir ! ' s flow control requirement . rrhis facility, could be integrated ith the wetland enhancement arca and could provide flow control for tl� e priva, t: e parcel ' s and for the city ' s planned improvements to NW 38 " ' Avenue . iCr 1w re b e 11 of ! r) e gSio 1 ' ill 7val e r D 1 , J111 !1ge Phil 57 1' ' 1NItC> jl : C' I ' 1. IGtIN) \ P1'1f1 \ Dr1f1 ( ' 111 Vff41 ' docx Section � Ca ltal Improvements Continued Cost Estimate / Funding Sources Fable 5 . 5 ; Grass Valley Estimate and Funding Plan Cosi: Estimate Item Cost Conceptual Designs $ 75 , 000 Funding Source Iter Grant Developer SDC x X x X V ISROJEa( i '� YGUt)t}1ll�tltitltitcpacc � � ;tc ► c , Tiu ,itcrt :ap ► caE Icttprr �ticttunc 9'3 ,attlf ) rz {t C :� I � \'< r 1 cic, c F� >, J; S Section 5 Capital Improvements Continued Project Name : Pacific F� � rr� Boulevard grossing Project IIS : DC 03 Watershed : Lacamas Lake . sin : Dwyer Creel Location : Pacific Rim Boulevard west of NW Fisher Creek Drive Description i Pi, cific Rim Boulevard e � periezaces routine flooding iia a low shot w. ( . t of NW Fisher Creek Drive and the entrance to Sharp 1: lectronzcs (See 1-412t1re 5 - 1 ) 4 The stormwater conveyance srstem that collects stor €nwa. ter in Pacific Rim Boulevard comes from both directions to this low point anal discharges north to a tributar�r of D tror Creek . In addition , theore are two culverts uncia- the road that carry stormw./niter from properties south of the street to the north side . The land adjacent to Pacific Min Boulevard rises steeply to the south . The area contains shallop r rc7 ind�vater and surface eater that runs towards Pacific I ins Boulevard . ` l•`he property owner has attempted to collect this water \. nth French drains and surface trenches . ' 1rhis «rater is directed to culverts that carry it under IOW Pacific Itim Boulevard . Proposed Project Determine the cause of the flooding at tills low spot and develop a plan for alle �cYiati �ag this This should include : pro Jena . A hydrolo9 c study Haat Rnclucles the private parcel south of Pacific Rim Boulevard "I"he development of a model of the systetYa to determine capacit}x Development of a conceptual design and construction cost estlinate 1' : , I1tC) 13 :1.:•1 ' 11bt1S,ti}� ICillh{ 1l � ZcE� nrt ; '��tc�rnt«•a � t• r ( : ;j �tetaE � mnrcn•Cnlrltt P [art � i� ritt t : iT' 1'tr •is?t�c: � Section 5 . CapltalImprovements Continued CostEstimate/ Funding sources Tabu 5 . 6 .* Pacific Rini Boulevard Estimate and Funding Flan Cost Estimate Cost Hydrologic and hydraulic model $ 5 , 000 Conceptual Designs and Cost Estimate $ 157000 Total $ 20 , 000 Funditig Source City Grant Developer SDC x X X x 1 ' • 1E 'iZ() � lt.:l"'� ibtk>f)'� ll�tlfic.iEltc•l�r� c�: l �tc��m��'.� crr t: a�� � ,at In� 4yicfti•t• »tens i 'i ;trt \ I ) r,� tt Cil t"cE •i .<<t}� y Section 5 Capita ! Improvements Continued Project Name : Julia Street Stormwater Pond Retrofit Project ID : DC 04 Watershed : Lacamas Lake Basin : Dwyer Creek Location East of cul - de - sac at intersection of NW Julia Street and NW 26th Avenue Description The Julia Street Stormwater Facilitgqf r lies at the bottom of a steep canton ar the end of a cul - de - sac east of the NWA" Julia Street and NW 26th Avenue intersection . A small intermittent 0 Al stream in the bottom of the canyon runs in a 36 -inch diameter pipe around this pond . The pond was constructed in the late 1990 ' s as a detention facility , and it detains flow from two subdiNrisions that sit on top of each Side of the canyon - Columbia Ride on the sotitli side and Oak Ridge Estates on the north side . Stormowater is discharged fromintermittent several subdivisions into the stream upstream of or the detention facihtly . jq Sediment from upstream 4 �K development and landslides ixiAll. W I Oro . P4 the steep canNfon walls is 444 oil z carried in this intermittentIL stream and deposited at the 4 entrance to theP ipe . The pipe routinely gets filled in from this sediment , causing the stream to overflow into the detention pond . A If 41 Areor�qd o Ek 4p , t alrl� c � t� gh the facility is f , PAVO privately- owned and poll 09 maintained , it sits on Cite1 16 - AqqqqIf .. ._ owned propern� . OccasionallY Fi 53Julia Street Pond in a spring 2012 flood event the City has removed sediment 8ure - : � g from the pipe and from the bottom of the pond . although there is an access road leading to the pond , access to the storm pipe and pond bottom is challenging. C prehen viite Storiii >,pater D r a onage T' an 61 V \ 1111011 '.1;l '\ 161)(R)116060\lttpt)rti\Storm%vster C;ipatiti .Intprovemenr l'lanWrTtft f: ll' ��c� +docs - . 7 Section 5 Capital Improvements Continued Proposed Project An evaluation should be perfo. med to determine if this pond can be reconstructed and retrofitted to eliirmnate these issiles . Consideration should be wren to the folio \* qng . Installation of a debris collection structure where the stream craters the pipe to pre rent the pipe from clogging IZe�� ove the bypass pipe a � td allow the stream to Row through the pond Enlarge the pond to the northwest to allow more good storage Construct a forelaay for trapping sediment Construct a maintenance road for access to the forehay and all parts of the facilit Cost Estl mate/ Fu nding Sources Table 5 . 7 : Julia Street Stormwater Retrofit Estimate and Funding Plan Cost Estimate Item Cost Alternatives Analysis $ 5 , 000 Conceptual Designs and Construction Cost Estimate X20 ' 000 Construction $ 210 , 000 Construction Management $ 20 , 000 - - - - - - --- - Total $ 255 , 000 Funding Source It r Grant Developer SDC X x 62 C l t j 0 _f C a 1JI rl S V: 1. I' ROPA ( rl "tifii}U(l1l (4)tlG{ i '� Itep ( )rt .AS%; orm*%vaTvrCapital Impron'l'mois* Hati \ D aft CII' V(tr 44d0cx Section 5 �Capjtal Improvements Continued Project Name ' Thomas / Carson Estates Flooding Pro j ect ID : DC oS Watershed : Lacamas Labe Basins Dwyer Creek Location ` Thomas and Carson Estates , along NW Maryland Street Description These two sUbdivisions sit near tlic bottom of the northxvcst slope of Inane I- f ill , Runoff o 'f from the hillside above these subdivisions streams do \vn the hillslope and floods nearby roads and lawns . Various ditches and swales provide some collection anti routing of stormwater to stormwater facilities located in these subdivisions ; ho %vvever , thcsc conveyance factlitles are overtopped in large storm events . 1 Proposed Project P Design and construct a conveyance system capable of adequately convering the upstream stOtMVTater flows safe do«� zstrcam around these tr%ro subdivisions . Cost Estimate/ Funding Sources Table 5 . 8 : Thomas/Carson Estates Flooding Estimate and Funding Plan Cost Estimate Item Cast Alternatives Analysis K000 Construction Drawing Preparation $ 10 } 000 Construction $ 100 , 000 Construction Management $ 12 , 000 Total $ 127tOOO C 0xpre �a err .1s Ile .J% lo rmnlfale1 • Draipase P / nrl 03 VAPHOP 'CIA 16000 \ C: tjnul Impr< veillefIt FIA11 \ 1kah ( '11' Vta r skfo x Section Capital Improvements Continued -- -- - - - -- --- ---- Table 5 . 84. Thomas / Carson Estates Flooding Estimate and Funding Flan Funding Source tGrant Developer SDRC x X x Inyowcc wor P1aaV) f;ot C,: 11) Vo . Z .. .Rfi , . qtr Section Capital Improvements Continued Project Name : North Urban Growth Area ( NUGA) Stormwater Basin Plan Project ID ,* ULB o 1 Watershed : Lacamas Lake Basin : Upper Lacamas Basin Location .. NUGA ( North of Lacamas Labe ) Description r11he Cit�l ' s urban groN* 7th boundary includes ars. area on the north side of Lacamas Lake called the North LYi. bai Growth ea (NUG- A) 'I" lie C7 '� is bounded by � ' Leadbetter load f and Lacamas sake on the south , Til.0 232nd A renue on the Tcst , State Route 500 / 1F. Street on the east , and var0Tin �; roads and properties on the north . The �,it�7 will be de�crikoping a long- terrn flan. for this area. , including the establishment of detailed zoning and a street layout for arterials and collectors . 'ne city ' s planning effort for NUGA includes development ofa stormwa. ter basin flan that addresses water quality , flow control and con.ve rance . This plan will be designed to deet the C � ity7 ' s recently adopted stormwater ordinalzce that folto �vs the Storm %vA.,rater 1\11anagement I nual for Western Washington. (SMM '\�4-' \X) "Mlle C.ity ' s code exempts Lacamas Lake froin flow control requizemetxts if the folloN*'ni . g criteria are met , "Me project site is drained b a conveyance systei�n that is comprised entirely of l� ann� adc conveyance elements {e . g . , pipes , ditches , outfall protection , etc . and extends to the ordinary high F\N7ater 11i� c of the e � ez� pt receiving water ; and I lie conveyance system between the project site rand the exempt recenring Nvater shall have sufficient hydraulic capacitNr to Convey discharges from future hulld - c ut conditions (under current zoning) of the site , and the existing condition from non. - project areas from \N.7hich runoffis or ��rill be collected , ` I'he conveyance systems for the NFT Grp. area will be srled to car�-�r undcfiained runoff so detention o .f stormwater will not be required . There are multiple culverts under Leadbetter Road that convey runoff from the north side of the road to Lacamas Lake . If these culverts can convey runoff from the NUGA then flow control facilities %5.nll not be required . This project: %�.nll dcter� ine the capacity of these C 0 m ebG' 11S111 ,Sftj1 ' m11ft'1 fc' 1 ' ,� Yma1' /11T �� �' } / a 65 1` : 11 ;1ZUJ6 :C.:11 � Ioxx) \ I (1 1 � f3 ', ItepoIF( ; \ Seo r m�, tri C :apttal Imps velli:' tit 11.1n11 ] r;1A ( AI VOOr 4Am .\ � , Section " Capital I Continued culverts and whether or not they need to be Upsized to Convey the runoff from the NLTGA to the lale . 1.. ..acamas Lake is on the state ' s 303 (d) list for total phosphorus . Labe eutrol:) hication occurs i4nost suix nicrs and restoration efforts have focused on reducing phosphorus loadings , ' I'lle City r�,fc�uires phosphorus treatment in the I.,.acar as watershed abo �r � the dam at the south end of RoundLake for all developmentsites exceeding oneacre in site . Proposed Project ' l 'h s IP is t () 7rC) Vlde funding for development of a stornriw-ater basin plan for the NLTGA. 'lyhe store water imaster plan should include the foll (w ing : � n evaluation to determine the f < sil�ili y o t� si Z ,{a�v Zi�ipact Development BiNIPs in the study area . `I'lais determination should be made in conjunction with the development of road sections to determine if measures such as bion: ration Plalrit(,: rs can be placed rlthin the right- of- q\ ray for treating; toadxvay stt}i. mwater . .e` ?. list of runoff treatment Bi11 Ps to be used in the study arca that meet SMs'\ IWW requirements , and the City ' s phosphorus requirement . Sizing of Major storinwater conreyance pipes that sellre in 11tiple properties , An co ralliation of the existing r C311rerts under Leadbetter Road to dcterinine their hydraulic capacity to convey the discharges from the estimated build - out of the NL1GA area . recommendations for upsiling the culverts should be included . Cost Estimate/ Fund 'ing Source Table 5 . 9a NUGA Estimate and Funding Flan Cost Esdinate Item Cost Alternatives Analysis/ Conceptual Deslgns/ Ilan development $ 100 ) 000 Hydrologic and Hydraulic Modeling $ 75 , 000 Total $ 175 , OOO Funding Source City Grant [developer SDC x x x x �': '� E' 3tC) � i �E:'! \ 1GZHK11iG�JGU1itc�xyitsl `tc� r7tti�-3tci ( :;jE» t.33 tntit3r<;tc� rnc � �t i 'lac� \ i7ratK �: il ' \ 'cr .l .cjs;; >; Section S capital Improvements Continued Project Name : Forest Home Road Sediment Basin Pro Iect I : BC 01 Watershed : Columbia fiver Basin : Blue creel Location : Intersection of NW I oth Avenue and NVV Ivy Drive Description I or� est 1-tome Road travelsfrc� r� the top of Prune l dill at NW Astor St �� eet to NW0th Arenue , This road drops close to 400 fee over less than a mile Inlcnoth z* . creed parallels Forest ��•l_ ome Road until It reaches NW 10th Avenue , where it enters a pipe . Because it is so steep and heavily vegetated , this creep carries a lot of sediment and debris , t\Ahrch collects at the entrance to this pile , �� i� c �� it}� has built a sec�� r�� ent collection facility that allows them to excavate out this debris ; they are called to this site to load out debris frequently during the vAnte; r: months , Proposed Project Design a System for sediment and debris collection that �� �11 allowthe entrance to the pipe to remain clear_ and requires c. it�. crews to clean the facility less frequentljTa Cost Estimate/ Funding Sources "able 5 . 11 Forest Home Road Sediment Basin Estimate and Funding Flan I Cost Estimate Item Cost Design $ 25 , 000 Construction $ 75 , 000 Total $ 100 , 000 1' : 11 > Itt Jl : (.:"� �, ilii}(?ty � 1Gt}G�f� 3ti� ar� ; � titi,rni.� �tcr ( : ,a }„ � :aE I ,»�ir< ; �•cmcnr i'1.3n � l� ratt ( ' 1111' er a . cii,cN s .ra , .z. . Section - a. pitalImprovements Continued Funding Source City Grant Developer SDC x x 63 �. 1. 1 � # D �.9aIN as 1': 4i� 3tt )Jft �3 ' 1, 2Gt?04i\. lfit?(i (a'�, 1(t��ic� rt :4 �tr1tt� t ��'att.'r Gr ,igtitr. ,ti 3rnE� rc�rrrtirrtt t'l :trt4l �r:tft t� 12' ` 'c• t •a .dt;c �' Section 5limianiiiiiiiiiiiiiiiinvoCapital Improvements Continued Project Name : Blue Creek Sediment Basin Project ID : BC 02 Watershed : Columbia River Basin : Upper Blue Creels Location : Intersection of NVQ I oth Avenue and NW Drake Street Description Blue Creek travels steeple dawn the south east slope of Prune Iill until it reaches NW 10th Avenue , where it enters a pipe . Because it is so steep and laea�ril}� vegetated , this creek carries a lot of sediment , sticks , and debris with it , which collects at the entrance to this pipe . The C; it�r leas built a sediment collection facility, that: allows them to excavate out this debris ; they are called to this site to load out debris frequently during the \winter months . VW OW AOi lie tell 1 41 lrb tell 44 AL All 9 .0 t ti 1 • 4 �. � ' - rell J •f '! ii r.� y „ . ar Z - t + `'I•:' ya .tom � S '. �� i 44 ttl Mill K Figure 5 -4 : Sediment collection facility at Blue Creek . C omprebenslye Staa • armaler Drat nage Plan 69 1' �, IKIMF `• f�7”t. ffiUC10� 1f { 1Gt)\ Rr�ntz . \�tum�a•.tter (;:� p � ta ! ln� pmrtr�cnt t '1,tnE, 1 ) rtti (: t1' t'rr '� . ciccs Section apical Improvements Continued Proposed Project Design a is Tst:eiiai for: scdimerit axad debris collectxori that �"Txll allow the emtralice; to they p1pe to rerria111 clear and requires citj crews to cle: ati the facilit-� les : frcquentl�� d Cost Estimate/ Fun ding Sources Table 5 . 12 : Blue Creed. Sediment Basin Estimate and Funding Plan Cost Estimate Item Cost Design $25 , 000 Construction $ 75 , 000 Total $ 10MOO Funding Source City Grant Developer SDC x X 70 C 1 fJ ' Of C (1 ,9/ a S ' A1 '1tOjI :C'! '1 i �,Rhti3 '. t (�()tiR}11tc� c�italti€a � c�iaa � cr C;opjuI Improviniirnt 1 'la(A1 )rift ( ' 111 Ver 4A(?Cx Section 63 Financing 6 . 1 Introduction The Camas st: ormwater utrlrt�j eras � c} rrrred to f� rr� d tl� c c1tr ' s sic} zzIrwater prc> ram and ro meet their first 1 I' 1 1:1; 5, permit requir-er gents . rI'l� e l blit r is resl� ons ble for the upleeep of the publlcly� owned storr-n �xrater s Tstexxr , including conveyance pipelines , manholes , catch basins , detention ponds , and treatment systems . It is also responsible for street sweeping as this is a regulator WIr requirement that reduces the ai count of sediment that enters the City ' s creels and stz-earxas (FCS ( 20 0 . `:l' he utilit�Y collects monthl�r rates to find operations and maintenance a r of tl� e e � istit� sto ' m��ratei" systezxr and to fund ca1 } Ital t �z�l r )c vrements . Ills torically , the 101isher• Basin has had a storm-water' utllit)T fee collected to fund projects in thatasir � . However . with tl� c formation of the newcitrl �ide utllitr , this fee was discontlnued , and the funds collected \gill be retired in ? 0 "1 . A utility rate stud�r conducted by Financial Consulting Scr�rices C� xr� up (FCS (' ) in 2009 set the stormwater utiIlty ratcs fr+ o ri ? ooc� tl� rc}L l� ? 013 . ` I hose rates we:c adopted b th crit \� r council , are included in CT 4C 13 . 89 and are shown in Table 6 . 1 . Table 6 . 1 : Storm -water Utility Rues 2010 2011 2012 2013 $ 7 , 65 < $ 8049 $ 9 . 00 $ 9 . 27 The current rates do not have a lark capital component built in to the structure . The FISC (' 2009 rate study set tll. e storm rate to cover t1le cost of tlf. e operation and maintenance of the existing storm System and modest an"lounts for replacement of c istir-r ; infrastructure , As part of the l ishetk%Ba- sln �� tl It r , sollnc capital dollars have been available but that accoullt 114I( :. been depleted . `I 'o 7ro'4ride a secure longi term capital fund , the I� SCG study proposed Implementation of a System. Development Charge (SD ('., ) With a methodology consistent With the current: water- and sewers SDC . The rate would capture both historical costs and future capital needs , . ` 1'o be consistent xkrith the water- and sewer SDC , the SDC could be allocated at a rate of 67 % Developer funded and 33 % Cit�r . This brealdc}���r1 accounts for the c�ecrclol� ex x �. sl� oz� sibili �t per code to install the minimum requirements for their development: and allowing a credit or Providing funding for the re91onal component . If Council chooses not to izxr lenient the SDC: , other funds would be .responsible to Implement this capital plan . Future versions of this play. Will include a rate studt7 that Will be developed to ensure the r future rate structure is suitable for continued funding of loth O&M activities and capital construction projects , C o111prebe11S1 Pe 5f07 ' V/ We7 e ? ' D1 ' Cl111 �l ��' e Pa11 7 .1 Noe i �' 3tf ) � f:' ' \ IGi.H}C➢ ', 1GlfGlti`, ittp «� �: \4it� an��ti .ttci CIPLIA lmprc»•i•mcotc J1k(1 \ Drab UP Vtf 4 - docs Section --- Fjnancing Continued `ne city is scheduled to conduct a utility rate study in 2013 , A policy decision should be trade on funding critical storewater system capital reeds through adoption of DC ' s or through rates . '"17he; utihly clirrer;id has no debt associated With the rates . r 72 C. t f o f C.,` a lta a .; 1 ` ' 1P] tt7 � li(" f \ ) (OhY't1LitGtl� 3tfi}� rt � 1 � t « n1tittcr � . ;tl� t .tl Im�� s' ac' cttcrtt ,tf't � ; II ' "cr %IAf)Cx Section 7 Refersences Boc7) rnazlan & 14care , 21008 . N1emoranduma. Clarification old. X%7hich stormwater Infiltrinol practices / technologies Nave the potell ' ell to be re&elated as " Class V" wells T tl� e Underground Injection Control Program , United Mates Environmental Protection i genc.}� , june 13 , 2008 . 1 CSG 2010., Calt�7 of Camas ; J * inal Report for Utilities Rate Study . januaq 2010 . DEA 2001 (a ) . Phase: I lusher Basin Stormwater and Wetlands Master Plan . David Eva1-is and 2001 . ( Camas Project No . S010370) .Associates . ] ul}r 13 , IAEA 4=2001 ( h) . Technical Memorandum for Long-Tertn .assessment of North Irv, rer Creek . David L*%7ans and. Associates , 11ehruary , 2001 . (Camas Project No . S - 370) . .ISI A 1998 . North 1) 4%\r7er Creek iviaster flan . ` T `echnical ltiF�c ��ora �l �� u �l� � 1 : lncfentar �r of laxistrng Conditions . David Lvans and Associa. tes . October 14 , 1998 . (Camas Project No . S � 370) . l:4coloj 2 () ) C} . Ci. l � az� ce. dot• .TIC: r'clls that i�{Tazae Stoii�zwate - . ' ''asl� ii� Co � `Mate Department o 1I. cology . Publication Number 0ST10 - 067 . Deceinber 2006 . Washington Departn-ient of Ecology UTC: Website . Rettle'ved ja. niiary 28 " ' , 2013 . lztt : / / w%,xrw . ecy . ova . oNr / pragiams / *(,v(.1/ grndwtr / uic / registration f regitifo . html . NIff 1 9005 . 11 smher Basin � ydrolo9ic and Hydraulic Analysis . Maul , Foster , a �� �� 1`� lon �iQ October 4 , 2005 . (Camas Project No . S456) . Calwas VAI ' lit ) JI : ( "1. '\ �1tst}t30 \ 16060 \ ) tcl) t >rts \ Storinwater Capital Improvement 111atADraft C : 11 ' 1• a 4 . doex Appendices Appendix A Storm Facilities Maintained by City STORM FACILITIES MAINTAINED AWED B I CITY FACILITIES DEPT , DATE MAINTAINED ID # FACILITY LOCATION ADDRESS RESPONSIBLE FACILITY TYPE FINALED3 8 Caribou bores ( nothing anymore ) Not scanned1no asVVbuilts ? 7 Skyridge diddle School 5218 NW Parker Street Street Detention Pond - Dry iul - 90 2 33 Knights Point 5214 NW 16th Circle Street Detention Pipe 34 Lacan� as Cave 216 NE 7th circle Street detention Pond - DryDec - 00 4 35 Lacamas Ridge - treepS �nralefUnderground Det Feb- 78 43 ILake Heights (forth 1515 NW 44th Avenue Street Ditch & Culvert Lake heights - South 1425 Ivv 44th Avenue Street Ditch & Culvert Dec- 94 6 51 Operation Center 1020 SE 8th Avenge .-.Y. .�Street Detention Pond IV 44�0- 7 52 Parker Estates - West Entrance 3811 NW Knapp Lane Street Detention Pond Aug - 95 Parker Estates - East Entrance 344 t NW Pacific Rini Drive Street Detention Pend Aug - 95 g 53 Parke' Street 4310 N %N Parker Street Street Ditch / Box Culvert 54 Parker Street 405 NW Parker Street Street Ditchl3ox Culvert 10 87 Skyline Estates 2800 NW McIntosh Road Street Ditch Culvert Aug - 31 70 Stone Ridge 515 W 24th Circle Street Treatment Vault Mar� 04 12 79 Sunset Court 2335 NVN 28th Avenue Street Dioswale Fe, b - 5 LA I -r- 13 88 Lacamas Summit 710 NE 42nd Circle Street Detention Pond Mar- 01 14 89 Lacamas Summit 555 NE 38th Avenue Street Detention Pond l ar _ 00 15 91 COC Benton / Drake ? Street Detention Pond 16 95 Lake Road Pond f#4 2400 NW Lakef Road Street Detention Pond 17 96 Lake Road Pond # 3 4975 NW Lake Road Street Wet Pond 18 97 estside Fire Station V4 12 East 4321 NV's! Parker Street Parks Wet Pond � 19 98 Westside Fire Station X42 Fest 432 NWParker Street Parks1Vefi Pond 20 02 Holly Hills Phase 3 Behind 2450 NV**v 29th Ave . aitch Inlet & Culvert Dov-- 98 21 Ill Ash Creek Park 1905 NW Maryland Street Parks Detention Pend Dec - 04 124 Heritage Park ( aka Lacamas Boat NW Lake Read Parks 8iaswale 22 Launch ) Jan _ 05 23 1 125 Grass Valley Park NE 38th AvenueParks Detention Pend Feb - 05 24 17 Klickitat Parte ( aka Deer Creek Ph . 7 ) NW Klickitat Street � Parks Wet Pond Mar- 05 25121 Leadbetter Pana NW Leadbetter Drive Streets l et Pond Aprw& 05 Updated : 3 / 23 / 12 City Maintained Facilities Printed 3 / 23/ 2012 i Appendix B Cost Estimates _ _ _ _ _ -' T -` - - 7 1 Pond J ull' Street orr� ter o d Retrofit Construction Estimate ITEM QUANTITY UNIT Bid ITEM DESCRIPTION UNIT PNCE TOTAL ? LS MOBILIZATION ( 10 percent) $ 13 , 571 $ 13 , 571 2 LS SPDC PLAN $ 500 $ 500 3 LS CLEARING AND GRUBBING $ 10 , 000 $ 10 , 000 4 1 LS REMOVAL OF STRUCTURE AND OBSTRUCTION $ 10 : 000 $ 10 , 000 5 5000 CY ROADWAY EXCAVATION INCL . HAUL $ 15 $ 75 , 000 6 40 TON CRUSHED SURFACING RASE COURSE 575 $ 30000 7 1 LS DEBRf S STRUCTURE $ 20 , 000 $20 , 000 8 LS DEWATERING $ 50 , 000 $ 10 , 000 1 LS TEMPORARY EROSION CONTROL ( 3 percent ) $ 3 , 855 $ 3 , 855 10 1 LS LANDSCAPING RESTORATION ( 3 percent) $ 33855 $ 3 , 855 CONSTRICTION SUBTOTAL $ 'I49 , 781 0 percent contingency $ 441034 - - - --- - --- -- TOTAL CONSTRUCTION $ 194 , 715 Sales Tax at 8 . 4 % $ 16 , 356 TOTAL ESTIMATED PROJECT COST $ 211 , 071 Thomas / Carson Estates Flooding Construction Esti mate ITEM QUANTITY UNIT BID ITEM DESCRIPTION UNIT PRICE TOTAL 1 LS MOBILIZATION ( 10 percent) $6 , 151 X6 , 151 2 LS SPCC PLAN $ 500 $ 500 3 1 LS CLEARING AND GRUBBING $ 5 , 000 $ 53000 4 1 LS REMOVAL OF STRUCTURE AND OBSTRUCTION $ 5 , 000 553000 5 500 CY ROADWAY EXCAVATION INCL . HAUL $ 15 $ 7 , 500 8 40 TON CRUSHED SURFACING BASE COURSE $ 75 $ 30000 7 500 LF STORM PIPE , 12 , INCH $ 75 $ 371500 8 1 LS TEMPORARY EROSION CONTROL ( 3 percent) $ 11755 $ 13755 9 I LS LANDSCAPING RESTORATION (3 percent ) $ 11755 $ 1 , 755 CONSTRUCTION SUBTOTAL $ 68 , 161 30 percent contingency $ 20 , 448 TOTAL CONSTRUCTION X86 , 609 Sales Tax at 8 . 4 % 57 , 443 TOTAL ESTIMATED PROJECT COST $ 957052 i Page - S Ordinance No . 2678 Exhibit D - Camas Comprehensive Plan Mai i i i I i i I 541 r ;1 BRADIF RD 4! NE ' Comprehensive Plan i Single-Family Low o4 I TV Single-Family_Medium — Single-Family_High Multi - Family_Low I � Multi- Family_High I i— `- 1 Commercial _ � _ N �_ . 44th �. a i <i Light industrial/Business park foot z Industrial t 8 I - foot Park Open space/Green space s. 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The City of Camas expressly disclaims liability hat Ordinance # 2678 ( Adopted 2013 ) for Information matioInaccuracies themselves mnRRpt.,tPro.".aercbn rom°rus ' he present. Users of this r"m n:, rr.e..e1 ey .o „ m. ,e1sm check any nshouldt accur c check an details for accuracies. ��. ^ m< CHNf-annt Dlie'. 9/11ROIJ Path: 0 .\ProNcl3\conSms�aherAgenclos\19e01LLanaUaH30/ 3\CeyOrallZonlne I I I RESOLUTION NO . A RESOLUTION approving a Development Agreement between the City of Camas and multiple property owners collectively known as Lacamas Northshore . WHEREAS , Mills Family , LLC , Shane T . and Melissa A . McGuffin, Eric J . and Amber F . Ware , Gail Gregg and Gerricl� Weakley, David W . and Alexis R . Mason , Roy J . and Judy A . Ware , Edward and Jacqueline Sue Buma, Merle E . Cisney, Trustee of the Cisney Living Trust dated October 15 , 1997 , Robert A . and Debra S . Cisney , Johnston Dairy, LLC , and Edward. C . Borowski are owners of certain real property located within the City of Caxnas (hereinafter referred to as " Lacamas Northshore " ) ; and WHEREAS , the City of Camas and Lacamas Northshore have negotiated a Development Agreement; and WHEREAS , the Development Agreement sets forth certain development standards that will govern the development of the property ; and WHEREAS , the City Council has conducted a public hearing, as required by law, on the proposed Development Agreement, at which time it considered testimony from all interested parties ; and. WHEREAS , the City Council finds that the Development Agreement has been reviewed by the Director of Community Development and has been found. to meet all applicable planning requirements ; and WHEREAS , the City Council desires to approve the Development Agreement ; NOW , THEREFORE, BE IT RESOLVED BY THE COUNCIL OF THE CITY OF CAMAS AS FOLLOWS : Section I That certain Development Agreement between the City of Camas and. Lacamas Northshore , relating to certain real property located with the City ' s municipal boundary, is hereby approved , and the Mayor is authorized and instructed to sign the Development Agreement on behalf of the City . Section lI The Development Agreement shall be recorded with the Clark County Auditor, pursuant to the requirements of RCW 36 . 70 (B ) . 190 . %. , v19 %%P, 4 , ,. . P-. 41 Resolution No . �. Pa.ge - 2 ADOPTED by the Council of the City of Camas and app7e by the Mayor this 16i'' day of September , 2013 . SIGNED : ° May r ATTEST : 1 c APPROVED as to form . City Attorney