1022 EUCLID AVE.PDF1022 EUCLID AVE
Critical Areas Checklist CA File No: CA —0i— 101
Site Information (soils/ topography/ hydrology/ vegetation)
1. Site Address/Location: % 0 a � .L'-�—� k� 1- fI vim,
2. Property Tax Account Number: C;, o 5 o /(a T� �
T.
3. Approximate Site Size (acres or square feet): _
4. Is this site currently developed?, yes; no.
If yes; how is site developed? ; LLO4
5. Describe the general site topography. Check all that apply.
Flat: less than 5-feet elevation change over entire site.
Rolling: slopes on site generally less than 15% (a vertical rise of 10-feet over a horizontal
distance of 66-feet).
Hilly: slopes present on site of more than 15% and less than 30% ( a vertical rise of 10-feet
over a horizontal distance of 33 to 66-feet).
Steep: grades of greater than 30% present on site (a vertical rise of 10-feet over a horizontal
distance of less than 33-feet).
Other (please describe):
6. Site contains areas of year-round standing water: Approx. Depth:
7. Site contains areas of seasonal standing water: ��! �; A the
� �'; Approx. Depth:
What season(s) of the year?—T
8. Site is in the floodway A/-,I-'floodplain of a watercourse.
9. Site con ' icreek or an area where water flows across the grounds surface? Flows are year-round?
Flows are seasonal? (What time of year? ).
10. Site is primarily: forested ; meadow ;shrubs ; mixed
urban landscaped (lawn,shrubs etc) ���--
11. Obvious wetland is present on site:
Critical Areas Checklist.dod3.19.2001
'42C. I g9V
City of Edmonds
Development Services Department
Planning Division
Phone: 425.771.0220
Fax: 425.771.0221 .
The Critical Areas Checklist contained on this form is to
be filled out by any person preparing a Development
Permit Application for the City of Edmonds prior to
his/her submittal of the application to the City.
The purpose of the Checklist is to enable City staff to
determine whether any potential Critical Areas are, or
may be, present on the subject property. The information
needed to complete the Checklist should be easily
available from observations of the site or data available at
City Hall (Critical areas inventories, maps, or soil
surveys).
Date Received: r11611_;/
City Receipt #: /9///f
Critical Areas File #: CA - b I — I dam(
Critical Areas Checklist Fee:_. $45.00
Date Mailed to Applicant:
A property owner, or his/her authorized representative,
must fill out the checklist, sign and date it, and submit it
to the City. The City will review the checklist, make a
precursory site visit, and make a determination of the
subsequent steps necessary to complete a development
permit application.
Please submit a vicinity map, along with the signed copy
of this form to assist City staff in finding and locating the
specific piece of property described on this form. In
addition, the applicant shall include other pertinent
information (e.g. site plan, topography map, etc.) or
studies in conjunction with this Checklist to assistant staff
in completing their preliminary assessment of the site.
The undersigned applicant, and his/her/its heirs, and assigns, in consideration on the processing of the application agrees
to release, indemnify, defend and hold the City of Edmonds harmless from any and all damages, including reasonable
attorney's fees, arising from any action or infraction based in whole or part upon false, misleading, inaccurate or
incomplete information furnished by the applicant, his/her/its agents or employees.
By my signature, I certify that the information and exhibits herewith submitted are true and correct to the best of my
knowledge and that I am authorized to file this application on t :ehalfof the owner as listed below.
SIGNATURE OF APPLICANT/AGENT DAB
Property Owner's Authorization
By my signature, I certify that I have authorized the above Applicant/Agent to apply for the subject land use application,
and grant my permission for the public officials and the staff of the City of Edmonds to enter the subject property for the
purposes of inspection and posting attendant to this application.
SIGNATURE OF OWNER DATE -PLEASE PRINT CLEARLY
Owner/Applicant:
AJ4. [�e. 4. 11aA'5�tpj;en
Name
Coa.a ykc_l,d � -
Street Address
U-)?r�o
City State Zip
Telephone: 41,2S— - % 7(, — 7fi�S`�p
Email address (optional):
Applicant Representatin2r,
Ronedd t - O A
Name
Street Address
- C�V"t W 9 -- 17qoa�:)
City State Zip
Telephone: 9 ;v5-s44f
Email Address (optional): f4 -
Critical Areas Checklist.doc/3.19.2001
City of Edmonds
Critical Areas Determination
Applicant: Ronald T. Den Adel Determination #: CA-01-109
Project Name: Lot Line Adjustment I Permit Number: LL-01-110
Site Location: 1022 Euclid Ave. Property Tax Acct #: 5319 041 016 0000
Project Description:
Lot Line Adjustment
Waiver Criteria (all criteria must be found to apply):
X There will be no alteration of the Critical Area or its required buffers;
X The development proposal will not impact the Critical Area in a manner contrary to
the goals, purposes, objectives and requirements of the Critical Areas ordinance;
X The development proposal meets the minimum standards of the Critical Areas
ordinance;
X The above findings are based on the following conditions of approval:
1. This conditional waiver is only for the deck shown in the attached site plan.
2. A building permit is required for all work.
Based on the above findings and conditions, the requirement for a Critical Areas Study
associated with this development permit,is hereby Waived, as authorized by Chapter 20.15B.040
(A)(1) of the Edmonds Community Development Cod .
4 Chanda Earhart 8/17/2001
Name Signature Date
City of Edmonds
Critical Areas Determination
Applicant: Ronald T. Den Adel Determination #: CA-01-109
Project Name: Permit Number:
Site Location: 1022 Euclid Ave. Property Tax Acct #: 5319 041 016 0000
Project Description:
Non -Project Specific
Determination: Study Required:
During review and inspection of the subject site, it was found that the site appears to contain
and/or is adjacent to a stream pursuant to Chapter 20.15B of the Edmonds Community
Development Code (ECDC).
Based on these findings, prior to submission of any development permit, you will be required
satisfy the requirements of ECDC 20.15B by completing the following:
Stream
My site investigation has shown that the site has a small culverted stream which is probably
draining a larger natural stream or wetland. Based on the above findings, a Critical Areas Study
is required to determine the hydrology of the area and to delineate the approximate boundaries of
any wetland or stream and identify its buffers. The required qualified critical areas consultant
needed to perform the study shall be a specialist in botany, fisheries, wetland biology, and/or
hydrology with a minimum of two years' field experience with wetlands and/or streams in the
Pacific Northwest. All critical areas studies shall be performed as three party agreements with
the city selecting the consultant and the property owner or applicant paying the fees.
The qualified critical areas consultant shall perform the following:
Classification of the stream and/or wetland pursuant to the criteria established in ECDC
Section 20.15B.060(A)(4) and (5).
2. Delineate the edge of the stream and/or wetland on the site.
3. State any mitigating measures appropriate to preserving and protecting the stream and/or
wetland.
After the qualified critical areas consultant has delineated the stream and/or wetland boundary, a
surveyor licensed by the State of Washington must perform the following:
1. Physically mark the edge of the wetland.
2. Delineate the required buffer (see ECDC 20.15B.120.A and 20.15B.130.C).
3. Delineate the required building setback from the buffer (required setback is 15 feet).
4. Create a map showing the wetland, the buffer and the building setback.
Both the qualified critical areas consultant and the Land Surveyor shall enter into a three party
contract with the applicant and the City of Edmonds as required in ECDC 20.15B.140(D), where
the applicant pays for the study. The applicant may suggest qualified professionals for the City's
approval.
If the results of the Critical Areas Study determine that the lot may not be developed, the
applicant may apply for a Reasonable Use Exception and Variance pursuant to ECDC
20.15B.I70A and 20.15B.040C).
If the property owner wishes to apply for a specific development permit which they feel
would not impact the Critical Areas located on the site, they may submit their proposal to
the Planning Department for review. If the Planning Department finds that the proposed
development permit will not adversely impact a Critical Areas or its buffers, a conditional
waiver may be issued on a project by project basis.
Name Signature Date
2
APPLICATION CARD No . ........ .................. .......... . .
for
The City of. Edmonds SIDE SEWER PERMIT - EASEMENT No. .......... ................ ........ I .........
OUTSIDE 0 INSIDE 0 REPAIRS 0
-
OWNER ............. ............... . .... ...... ............................................. CONTRACTOR ....................... . ..... . . . ....... .. .............. ..
.............................................. PERMIT No--Z76
STREET
HOUSE No ............... Z",
...................................... AVENUE LOT No. ....I.A. 17 ... C�'... .............................. BLOCK No. ..4/ ..... ........... ... I ............ I ...... I ........
NAMEADD ............. ..... ...................................... ....................... ......... . ............... .................
h-Z
Date Approved:
BACKFILL WORK ORDER ISSUED .... .... ........... ...................... DEPOSIT, -$ ......................................................
SEWER WORK. ORDER ISSUED ......................... ............ ....... DATE...
M01 NAll
/ 61
<
NO
...........
'Z"/
... . .........
LOVELL-SAUERLAND & ASSOC., INC
19400 33rd Avenue West Suite 200
Lynnwood, WA 98036
Phone (425) 775-1591 Toll Free: (800) 775-7663
Fax (425) 672-7998
TO: City of Edmonds
Engineering Department
121 5th Ave N
Edmonds, WA 98020
WE ARE SENDING YOU:
LETTER OF TRANSMITTAL
DATE: August 11, 1999
JOB No. 3907
SUBJECT: Shippen Culverts
ATTENTION: Don Fiene
COPIES
DATE
DESCRIPTION
2
August 11, 1999
Drawings
2
August 11, 1999
Calculation package
REMARKS:
The enclosed are forwarded as we discussed. The reports are signed on page 4. The intent of this
project is to open access to an undeveloped single family lot (actually one lot plus two half lots) that they
intend to construct a house on.
RECEIVED
AUG 12 1999
�6� DEVELOPMENT SERVICES
SIGNED:
Craig Campb I, P.E.
COPY TO: file
SHIPPEN RESIDENCE CULVERT SIZE
located near the intersection of
Euclid Avenue and 10th Place North, Edmonds
INTRODUCTION
Mr. Herb Shippen has retained LSA to prepare a plan for the installation of two culverts
to allow driveway construction into vacant single family lot, located near the intersection
of Euclid Avenue and 10th Place North in Edmonds. The property is divided by
Northstream Creek, and the only access route to the property is through a panhandle
portion of the lot which is currently blocked by the stream. Access to the bulk of the
useable area requires a second crossing. The stream was included in the City of
Edmonds basin study by URS, dated 1989. A Hydraulic Project Approval was obtained
from the Department of Fish and Wildlife. The conditions of the approval are attached.
The pipe size was selected to match the carrying capacity of the stream channel with
consideration of the estimated runoff from the basin, as documented in the 1989 URS
study. Although the basin build -out projects a peak flow of 48 cfs, it was calculated that
the channel capacity was less than that. Runoff rates that might exceed the channel
capacity would have opportunity to cross yard area and reenter the creek below the
second culvert. Since culverts will not further restrict the system carrying capacity, it is
anticipated they will not change the likelihood of the stream overtopping its bank.
The selected culvert size was a 36-inch diameter smooth wall pipe with a one percent
invert slope to match the slope of the creek channel. Although the Edmonds Drainage
Basin Study by URS (1989) showed improvement of the system using 30-inch diameter
pipes, the study did not appear to take into account a requirement for a sunken invert
that is presently required by the WDFW. The HPA issued by WDFW does indicate
that 20 percent of the pipe invert should be buried in the channel bottom. The loss of
20 percent of the invert of a 36-inch pipe gives it about the capacity of a 30-inch pipe.
Therefore, a 36-inch pipe is proposed for both culverts. Smooth wall pipe could be
concrete, reinforced concrete, or high -density polyethylene (HDPE). If cover over the
HDPE pipe is insufficient for traffic loading, a reinforced concrete slab could be placed
over the culvert to prevent pipe damage.
CALCULATIONS
Existing Channel Capacity.
The flow capacity of the existing stream channel sections were evaluated using
CivilTools software. Flows assumed to be at top of the bank. Channel data is based
on a field topography prepared in August 1999. A copy of a worksheet showing spot
elevations and '/2 ft contours is attached.
The following are the output from the CivilTools program:
Lovell-Sauerland & Associates LSA No. 3907
August 11, 1999 Page 1
SECTION C
NATURAL CHANNELS
VARIABLES LIST:
Y - FLOW ELEVATION Q - FLOWRATE S - CHANNEL SLOPE
VARIABLE TO BE SOLVED (Y,Q OR S) ? Q Enter up to 20 cross-section points.
Enter <Return> only for distance to end.
Y (FT) ? 105.6
S (FT/FT) ? .0125
RESULTS
Q= 34.56 CFS
A= 4.28 SF
P= 7.70 FT
V= 8.07 FPS
F= 1.73 SUPER -CRITICAL FLOW
, CROSS-SECTION POINTS
DIST ELEV COEFF DIST ELEV COEFF
------------------ ------------------
0 105.8 .02
2 105.3 .02
2.9 104.4 .02
5 104.1 .02
5.5 105.4 .02
8 105.7 .02
SECTION D
NATURAL
CHANNELS
VARIABLES LIST:
Y -
FLOW ELEVATION Q -
FLOWRATE
S - CHANNEL SLOPE
VARIABLE TO BE
SOLVED (Y,Q OR S) ? Q
Enter
up to 20 cross-section points.
Enter
<Return>
only for distance to end.
Y (FT) ?
106
S (FT/FT) ?
.0125
CROSS-SECTION
POINTS
DIST
ELEV
COEFF DIST ELEV COEFF
------------------
0
106.1
------------------
.02
2.1
105.5
.02
RESULTS
3.3
104.3
.02
6.1
104.6
.02
Q= 61.10
CFS
6.9
106.1
.02
A= 6.68
SF
P= 8.09
FT
V= 9.15
FPS
F= 1.61
SUPER -CRITICAL FLOW
From the calculations it appears that if super -critical flow conditions can be maintained
in the channel during a peak runoff event, the maximum capacity of the channel is less
than 35 cfs before it overtops the bank and flows across the lawn. If something in the
channel or channel geometry cause the flow conditions to revert to sub -critical flow (a
probable scenario), the capacity would be something less than that.
Pipe Calculations.
The following page shows the calculated flows for a partially blocked pipe. At section
C, the channel depth at overflow is about 1.7 feet, or 20.5 inches. With a 36-inch
culvert having a depressed invert 7 inches below the channel flowline, and a bottom
slope of 1 percent to match the channel slope, the water surface would be at a stage
27.4 inches inside the pipe. At 26.5 inches the partially -blocked pipe has a capacity of
40 cfs. Therefore, in this configuration, the pipe generally matches the hydraulic
capacity of the existing channel.
Lovell-Sauerland & Associates LSA No. 3907
August 11, 1999 Page 2
The following table models a culvert that has its invert partly full of gravel or other debris. The table calculates the hydraulic capacity of the pipe in discreet elevation increments, and
adjusts for the gravel surface at the invert. The equation used to determine the flowrate with an open channel condition is Q = 1.49/N * A * (R ^ (2/3)) * (S ^ (0.5))
Assumptions:
Friction Factor, n = 0.011 for pipe section, and 0.025 for the gravel section
Pipe slope 0.01 Dia = 3 feet
Fill width in pipe invert 2.37 ft Invert to crown distance 2.40 feet
Pipe filled to 0.6 feet = 7 inches
Depth Depth Adj. Top Theta Area Adj. Wet Adj. Hyd Adj. Q Wgtd Adj. V Adj
inches ft Depth Width SF Area Per Wet Rad Hydr cfs n" Q fps V
ft ft radians SF. Per. R Rad fps
1.51 0.12 0.00 1.201 0.82 0.10 0.001 1.23 0.00 0.08 NA 0.31 0.000 NJ 2.61 NA
3.0
0.25
0.00
1.66
1.17
0.28
0.00
1.76
0.00
0.16
NA
1.1
0.000
NJ
4.01
NA
4.5
0.37
0.00
1.98
1.45
0.51
0.00
2.17
0.00
0.24
NA
2.6
0.000
N
5.2
NA
6.0
0.50
0.00
2.24
1.68
0.77
0.00
2.52
0.00
0.31
NA
4.8
0.000
NJ
6.2
NA
7.0
0.581
0.00
2.37
1.83
0.97
0.00
2.741
0.00
0.35
NA
6.5
0.000
N
6.8
NA
8.5
0.71
0.11
2.55
2.03
1.27
0.31
3.04
2.68
0.42
0.48
9.7
0.023
1.4
7.6
3.9
10.0
0.83
0.23
2.69
2.22
1.60
0.64
3.33
2.97
0.48
0.54
13.3
0.022
2.1
8.3
4.5
11.5
0.96
0.36
2.80
2.40
1.95
0.98
3.60
3.24
0.54
0.60
17.5
0.021
4.
9.01
5.0
13.0
1.08
0.48
2.88
2.58
2.30
1.33
3.87
3.50
0.59
0.66
22.0
0.020
7.1
9.61
5.5
14.5
1.21
0.61
2.94
2.75
2.66
1.70
4.13
3.76
0.65
0.71
27.0
0.020
10.1
10.11
6.0
16.0
1.331
0.73
2.98
2.92
3.04
2.07
4.38
4.01
0.69
0.76
32.2
0.019
13.
10.61
6.4
17.5
1.461
0.86
3.00
3.09
3.41
2.44
4.63
4.26
0.74
0.80
37.7
0.019
16.7
11.0
6.8
19.0
1.581
0.98
3.00
3.25
3.78
2.82
4.88
4.51
0.78
0.84
43.3
0.018
20.3
11.4
7.2
20.5
1.711
1.11
2.97
3.42
4.16
3.19
5.13
.4.77
0.81
0.87
48.9
0.018
24.1
11.8
7.6
22.0
1.83
1.23
2.93
3.59
4.53
3.56
5.38
5.02
0.84
0.90
54.6
0.018
28.1
12.1
7.9
23.5
1.96
1.36
2.86
3.76
4.89
3.92
5.64
5.28
0.87
0.93
60.1
0.017
32.1
12.3
8.2
25.0
2.08
1.48
2.76
3.94
5.24
4.27
5.91
5.55
0.89
0.94
65.5
0.017
36.1
12.5
8.4
6.5
2.21
1.61
2.64
4.13
5.58
4.61
6.19
5.82
0.90
0.96
70.5
0.017
40.
12.6
8.7
28.0
2.33
1.73
2.49
4.32
5.90
4.93
6.48
6.11
0.91
0.96
75.1
0.016
43.
12.7
8.9
29.5
2.46
1.86
2.31
4.53
6.20
5.23
6.79
6.43
0.91
0.96
79.0
0.016
47.1
12.7
9.0
31.0
2.58
1.98
2.08
4.76
6.47
5.51
7.13
6.77
0.91
0.96
82.2
0.016
50.1
12.7
9.1
32.5
2.71
2.11
1.78
5.01
6.72
5.75
7.52
7.16
0.89
0.94
84.3
0.016
52.
12.6
9.1
34.0
2.83
2.23
1.37
5.33
6.91
5.95
8.00
7.63
0.86
0.91
85.0
0.015
12.3
9.1
35.5
2.96
2.36
0.70
5.81
7.05
6.08
8.72
8.35
0.81
0.84
82.9
0.015
54.0
11.8
8.9
36.01
3.00
2.401
0.001
6.281
7.071
6.10
9.42
9.061
0.75
0.78
79.0
0.0151
52.5
11.2
8.6
Lovell-Sauerland & Associates LSA No. 3907
August 11, 1999 Page 3
SUMMARY
Assuming that the water can reach the property through the upstream system, it
appears that the channel would already be subject to overflowing its banks in a 100-
year event, and that the addition of a culvert would not significantly increase the
likelihood of an overflow. The effects of an overflow on the property are for the most
part limited to the property.
Therefore, the pipe size provided, although not large enough to convey the "build -out"
100-year storm for the entire basin, should be adequate for the purpose proposed.
Lovell-Sauerland & Associates LSA No. 3907
August 11, 1999 Page 4
HPA CONDITIONS
Conditions of Washington State Department of Fish and Wildlife Hydraulic Project
Approval. The WSDFW has issued an Hydraulic Project Approval, dated February 13,
1999. The contractor shall obtain a copy of the HPA and abide by the conditions
therein. These include, but are not limited to the following:
Timing limitations: The project shall be completed by October 1, 1999. Work may
commence when the stream is dry or in a low -flow condition. If the stream is not dry
or in a low -flow period, work shall not start until low flow occurs or after June 1,
1999.
2. Work shall be accomplished per plans and specifications submitted to the
Washington Department of Fish and Wildlife, except as modified by this Hydraulic
Project Approval. These plans reflect design criteria per chapter 220-110 WAC.
These plans reflect mitigation procedures to significantly reduce or eliminate impacts
to fish resources. A copy of these plans shall be available on site during
construction.
3. The culvert shall be placed on a flat gradient with the bottom of the culvert placed
below the level of the streambed a minimum of 20 percent of the culvert diameter for
a round culvert, and 20 percent of the culvert's rise for an elliptical culvert. The 20
percent placement below the streambed shall be measured at the culvert outlet.
4. The culvert shall be installed to maintain structural integrity to the 100-year peak flow
with consideration of the debris likely to be encountered.
5. The culvert shall be installed and maintained to avoid inlet scouring and to prevent
erosion of stream banks downstream of the project.
6. The culvert shall be installed in the dry or in isolation from the stream flow by the
installation of a bypass flume or culvert, or by pumping the stream flow around the
work area. The bypass shall be of sufficient size to pass all flows and debris for the
duration of the project.
7. Neither culvert shall not exceed 30 feet in total length.
8. Disturbance of the streambed and banks shall be limited to that necessary to place
the culvert and any required channel modification associated with it. Affected
streambed and bank areas outside the culvert and associated fill shall be restored to
pre -project configuration following installation of the culvert.
9. Prior to releasing the water flow to the project area, all bank protection or armoring
shall be completed.
10. Erosion control methods shall be used to prevent silt -laden water from entering the
stream. These may include, but are not limited to, straw bales, filter fabric, temporary
Lovell-Sauerland & Associates LSA No. 3907
August 11, 1999 Page 5
sediment ponds, check dams of pea gravel -filled burlap bags or other material, and/or
immediate mulching of exposed areas.
11. If high flow conditions that may cause siltation are encountered during this project,
work shall stop until the flow subsides.
12. Extreme care shall be taken to ensure that no petroleum products, hydraulic fluid,
fresh cement, sediments, sediment -laden water, chemicals, or any other toxic or
deleterious materials are allowed to enter or leach into the stream.
13. A copy of the HPA shall be kept on the site at all times.
Lovell-Sauerland & Associates LSA No. 3907
August 11, 1999 Page 6
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June 24, 1999
Craig Campbell
Lovell Saueriand
19400 33`d Ave. West
Lynnwood, WA 98036
CITY OF EDMONDS
121 5TH AVENUE NORTH - EDMONDS. WA 98020 • (425) 771-0220 • FAX (425) 771-0221
DEVELOPMENT SERVICES DEPARTMENT
Planning - Building • Engineering
Subject: " Determination regarding Critical Areas Checklist # 98-97
Dear Applicant:
BARBARA FAHEY
MAYOR
Enclosed please find a copy of the Critical Areas Checklist you submitted. The "DETERMINATION" reached by the City
is located on the reverse side of the form (bottom of page).
It is very important for you to retain a copy of this Critical Areas Checklist "DETERMINATION" for your records.
:IMPORTANT INFORMATION;TO BENOTED
PLEASE EXAMINE THIS" DETERMINATION" FOR ADDITIONAL REQUIREMENTS. YOU MAY NEED TO SUBMIT
ADDITIONAL INFORMATION SUCH AS AN ENVIRONMENTAL CHECKLIST OR CRITICAL AREAS STUDY.
The 'DETERMINATION' for the Critical Areas Checklist you submitted is a site -specific determination not a
project -specific determination.
You must submit a cony of the CRITICAL AREAS CHECKLIST and DETERMINATI0N WITH ALL AN
PERMIT APPLICATIONS or YOUR APPLICATION WILL NOT BE PROCESSED.
Permit applications include the following:
Building Permits
Conditional Use Permits
Subdivisions
Variances
Applications to the ADB* Land Use Applications
Any other development permit applications.
cc: Phil Lund
Enc: Critical Areas Determination
Thank you.
Sharia Graham
Planning Secretary
* Architectural Design Board
Incorporated August 11, 1890
Sister Citv - Hekinan, Japan
City of Edmonds
Critical Areas Determination
Applicant: Craig Campbell — LSA Determination #: CA-98-97
Project Name: N/A Permit Number: N/A
Site Location: 1422 101h Place North Property Tax Acct #: 5319-041-003-0006
Project Description:
Non project specific
Determination: Study Complete
On April 4, 1998, a Critical Area Determination was completed at the above noted address. Due
to the presence of North Stream Creek flowing through the property, a "Study Required"
determination was issued.
The applicant has provided a stream/salmonid survey report from Pentec Environmental dated
April 15, 1998. It found no presence of salmonids and barriers downsteam would prevent future
possibilities of salmonid habitat.
A Hydrallic Project Approval (HPA) has also been obtained from the Washington Department of
Fish and Wildlife issued February 13, 1999 to culvert the stream. All conditions of the HPA
must be followed.
Any development or permit proposal is subject to SEPA review due.
The "Study Required" element of the Critical Area section of the ECDC has been
completed.
Karissa Kawamoto
Name
6/23/99
Date
City of Edmonds
Tw CRITICAL AREAS CHECKLIST
The Critical :lreas Checklist contained on his form is
to be oiled ,)ut any person preparing a
Dev ,-ioomenr Permit yppiication for the City of
Edmonds prior to hisiher submittal of a ,ievelopmenr
permit to the t=itv
The purpose of the Checklist is to enable City staff to
determine whether anv potential Critical Areas are, or
may be. present on the subject propem,. The
information deeded to complete the Checklist should
be zasilv available bream observations of the site or
data availably :: Hall (Critical .-*�rcas inventories.
maps. or soil
kn at;viicant. or ais,her "I":I :il •;Ut
the checklist. sign and :1 it) the
City. The City %viii ---ev c'•v :Ilk: W-1ki
preeursory Site Visit. inci inakc :i c:�r))rir;rti,rn )r tlta
Subsequent steps riLces-ill.' «� �r�li:r)I�:� .) •I�::�1��hlll�t)l
permit application.
Please submit a vicin1':- -Mip JI0,,!_ •�:i! l.)� :i:,i:ea
copy of this torn to issi t i:it% :;1:: 1 .n 1111t1in!s A110
locaiL'1_L' the Sptciril
,his form. In addition. :hc
other oertine.t M1'QrML1t1U!71 .�._e.. .il i:l�l.:r •_-:11,�),.
map. etc.1 or �Iudi�,> :n �;)r:iu;t�:i, �: i:) i;;i:• :�.:;:Il ;i
tU assist staff :11 Lorni`lr:trtl..:
assesstne:7t Or. the -111c
I have ":ompleted the attached Critical Areas Checklist and attest that tht
best of my krowledae l.till Out the appropriate column belo%r!.
Owner/Applicamr:
Applicant Representatiti•c:
Nalne Name LL"I ff LL S��LCt ►� I GL�'lC�.
-STE Zee:
Street Address
Ciry State Zip
Telephone
Signature
Date
Street .Address
IQ bk)
City State /171
Telephone,,._,
Si gnature
i
Date
(o"eel
vrCcepli UMj Lill Me= 1. floc
170 "=r,w-1 rwki7lAnwq-7-1;An7 866L—ZL9—SZV
OT:9T 666T/LO/96
City of Edmonds
CRITICAL AREAS CHECKLIST
The Critical Areas Checklist contained on this form is
to be filled out by any person preparing a
Development Permit Application for the City of
Edmonds prior to his/her submittal of a development
permit to the City.
The 'purpose of the Checklist is to enable City staff to
determine whether any potential Critical Areas are, or
may be, present on the subject property. The
information needed to complete the Checklist should
be easily available from observations of the site or
data available at City Hall (Critical Areas inventories,
maps, or soil surveys).
An applicant, or his/her representative, must fill out
the checklist, sign and date it, and submit it to the
City. The City will review the checklist, make a
precursory site visit, and make a determination of the
subsequent steps necessary to complete a development
permit application.
Please sub-mit a vicinity map along vith the slgJlV,4
copy of this form to assist City staff in finding and
locating the specific piece of property described on
this form. In addition, the applicant shall include
other pertinent information (e.g., site plan, topography
map, etc.) or studies in conjunction with this Checklist
to assist staff in completing their preliminary
assessment of the site
I have completed the attached Critical Areas Checklist and attest that the answers provided are factual, to the
best of my knowledge (fill out the appropriate column below).
Owner/Applicant:
Name
Street Address
City State Zip
Telephone
Signature
A Representative:
J
Name //
�V 5— S i
�Y/ PL
`L
Street Address
k441A6) tioS L-ST_ �Yn 21�
City State Zip
T
Signature
;7�_7 wl_ F2/
Date
Date
(over)
c:recepdonljanalcac1. doc
< CA FILE NO. 61e
-� 4, Critical Areas Checklist
1� ---------'---------------------------------------------------
Site Information (soils/toposraphy/hydrolo /vegetation)
1. Site Address/Location: 22, /0 -126
2. Property Tax Account Number: 3 t! q —0 -3 v
3. Approximate Site Size (acres or square feet):
4. Is this site currently developed? yes; no.
If yes; how is site developed?
5. general site topography. Check all that apply.
Flat: less than 5-feet elevation change over entire site.
Rolling: slopes on site generally less than IS% (a vertical rise of 10-feet over a
horizontal distance of 66-feet).
Hilly: slopes present on site of more than 15% and less than 30% ( a vertical rise of
10-feet over a horizontal distance of 33 to 66-feet).
Steep: grades of greater than 30% present on site (a vertical rise of 10-feet over a
horizontal distance of less than 33-feet).
Other (please describe):
6. Site contains areas of year-round standing water: ; Approx. Depth:
7. Site contains areas of seasonal standing water: ; Approx. Depth:
What season(s) of the year?
8. Site is in the floodway floodplain of a water course.
9. Site contain a r e or an area where water flows across the grounds surface? Flows are year-
round? Flows are seasonal? (What time of year? ).
10. Site is primarily: forested ; meadow shrubs : mixed
urban landscaped (lawn,shrubs etc)
11. Obvious wetland is present on site:
_��-------=--------=--------------�.:------For City:Staf -Use Only---------- - - -- -- - - . ---- ---
i.: Site.is Zoned?....: s
Z . SCS mapped soil.aype(s)� .. ,
3: ' Weiland. inventory or.C.A- map. indicates. wetland. present:on.site? �
.4. Critical Areas inventory. or C.A..map indicates..Critical..Area on site? AL
.5:. Site within designated earth subsidence:landslide._hazOd. areal .
(.. .:Site:designated on..the;Em�wonmentally.Sensitive Areas Map?.
DETERMINATION :.. .
STUDS' REQUIRED
WAI
a_chkdoc; Rev 10/03/97 ' �cCa, L
Fi L9 3907
llmiwft HYDRAULIC PROJECT APPROVAL stateofwamagon
Damommat RCW 75.20.100 or RCW 75.20.108 Depareaeac of pub MW Waimfe
Region 4 OQlee
Maw 16018 Mill Creek Boulevard
MIX Mill Creek. Washla8tsu M12
DATE OF ISSUE: February 13, 1999 LOG NUMBER: 00-D7682-01
PER/VIITTEE
Herbert Shippen
c/o 19400 - 331 Ave. W. #-200
Lynnwood, Washington 98036
(425)776-7958
Rielly• ' • ' • ►mi • •11 •
Lovell-Sauerland & Associates, Inc.
ATTENTION: C. Campbell
19400 - 33rd Ave. Suite 206
Lynnwood, Washington 98037
(425)775-1591
PROJECT TDl&`SCRU. MON: r-,stall r...* .....,.. ., ertj-
PROJECT LOCATION: 1422 - 101 Place North, Edmonds. Washington
# WRIA WATER BODY TRIBUTARY TO 1/4 SEC. SEC. TOWNSHIP RANGE COUNTY
1 08.0008 North Stream Creek Puget Sound SE 13 27 North 03 East Snohomish
VOTE: This culvert is proposed for installation in a location where fish passage is not a concern.
PROVISIONS
1. TIMING LIMITATIONS: The project may begin Immediately and shall be completed by October 1, 1999,
provided:
a. If the stream is dry or in a low -flow period, work may start immediately. If the stream is not dry or in a low -flow
period, work shall not start until low flow occurs or after June 1, 1999.
2. Work shall be accomplished per plans and specifications submitted to the Washington Department of Fish and
Wildlife, except as modified by this Hydraulic Project Approval. These plans reflect design criteria per Chapter 220-
110 WAC. These plans reflect mitigation procedures to significantly reduce or eliminate impacts to fish resources.
tilese ,. i. 1 e •a "able on t'. gyring co—struct n
..copy of LI l..Jv. pla:.., s.M.1 b ati i.a s; l..,s ................o .
3. The culvert shall be placed on a flat gradient with the bottom of the culvert placed below the level of the streambed a
minimum of 20 percent of the culvert diameter for a round culvert, and 20 percent of the culvert's rise for an elliptical
culvert. The 20 percent placement below the streambed shall be measured at the culvert outlet.
4. The culvert shall be installed to maintain structural integrity to the 100-year peak flow with consideration of the
debris likely to be encountered.
5. The culvert shall be installed and maintained to avoid inlet scouring and to prevent erosion of stream banks
downstream of the project.
6. The culvert shall be installed in the dry or in isolation from the stream flow by the installation of a bypass flume or
culvert, or by pumping the stream flow around the work area. The bypass shall be of sufficient size to pass all flows
and debris for the duration of the project.
Page 1 of 3
HYDRAULIC PROJECT APPROVAL sateotw„ai.o".
d RCW 75.20.100 or RCW 75.20.108 Department otFbk ad WOdlh
P15Sa.+ 6o Region
,wu ctmk H..i....�
WILDLtPB Mill Creek, W=hing wMt2
DATE OF ISSUE: February 13. 1999 LOG NUMBER: 00-D7682-01
7. Neither culvert shall not exceed 30 feet in total length.
8. Disturbance of the streambed and banks shall be limited to that necessary to place the culvert and any required
channel modification associated with it. Affected streambed and bank areas outside the culvert and associated fill
shall be restored to preproject configuration following installation of the culvert.
9. Prior to releasing the water flow to the project area, all bank protection or armoring shall be completed.
10. Erosion control methods shall be used to prevent silt -laden water from entering the stream. These may include, but
are not limited to, straw bales, filter -fabric, temporary sediment ponds, check dams of pea gravel -filled burlap bags or
other material, and/or immediate mulching of exposed areas.
11. If high flow conditions that may cause siltation are encountered during this project, work shall stop until the flow
subsides.
12. Extreme care shall be taken to ensure that no petroleum products. hydraulic fluid, fresh cement, sediments, sediment -
laden water, chemicals, or anv other toxic or deleterious materials are allowed to enter or leach into the stream.
SEPA: Exempt, no other non-exempt permits
APPLICATION ACCEPTED: January 28, 1999 ENFORCEMENT OFFICER: Lambert 041 [P3]
Tony Oppermann (425) 379-2309 1 p� D for Director
Area Habitat Biologist rlolll�� WDFW
GENERAL PROVISIONS
This Hydraulic Project Approval (HPA) pertains only to the provisions of the Fisheries Code (RCW 75.20). Additional authorization
from other public agencies may be necessary for this project.
This HPA shall be available on the job site at all times and all its provisions followed by the permittee and operator(s) performing the
work.
This HPA does not authorize trespass.
The person(s) to whom this HPA is issued may be held liable for any loss or damage to fish life or fish habitat which results from
failure to comply with the provisions of this HPA.
Failure to comply with the provisions of this Hydraulic Project Approval could result in a civil penalty of up to one hundred dollars
per day or a gross misdemeanor charge, possibly punishable by fine and/or imprisonment.
Page 2 of 3
HYDRAULIC PROJECT APPROVAL State of Washington
� d R
RCW 75.20.100 or RCW 75.20.108 egartmmt orblsh and wlldure
Mowepjon 4 OtRee
16019 Mill Creek Boulevard
WOLN Mill Creek. WnWngtou 9111112
DATE OF ISSUE: February ! 3. 1999 LOG NUMBER: 00-D7682-01
All HPAs issued pursuant to RCW 7 5.'_0.100 or 75.20.160 are subject to additional restrictions, conditions or revocation if the
Department of Fish and Wildlife determines that new biological or physical information indicates the need for such action. 'lice
peramittee has the right pursuant to Chapter 34.04 RCW to appeal such decisions. All HPAs issued pursuant to RCW 75.20.103 may
be modified by the Department of Fish and Wildlife due to changed conditions after consultation with the permittee: PROVIDED
HOWEVER, that such modifications shall be subject to appeal to the Hydraulic Appeals Board established in RCW 75.20.130.
APPEALS - GENERAL INFORMATION
IF YOU WISH TO APPEAL A DENIAL OF OR CONDITIONS PROVIDED N A HYDRAULIC PROTECT APPROVAL, THERE
ARE INFORMAL AND FORMAL APPEAL PROCESSES AVAILABLE.
A. NFORMAL APPEALS (WAC 220-110-340) OF DEPARTMENT ACTIONS TAKEN PURSUANT TO RCW 75.20.100,
75.20.103, 75.20.106. AND 75.20.160:
A person who is aggrieved or adversely affected by the following Department actions may request an informal review of:
(A) The denial or issuance of a HPA, or the conditions or provisions made part of a HPA: or
(B1 An order imposing civil penalties.
It is recommended that an aggrieved parry contact the Area Habitat Biologist and discuss the concerns. Most problems are
resolved at this level, but if not, you may elevate your concerns to his/her supervisor. A request for an INFORMAL REVIEW
shall be in WRITING to the Department of Fish and Wildlife, 600 Capitol Way North. Olympia, Washington 98501-1091 and
shall be RECEIVED by the Department within 30-days of the denial or issuance of a HPA or receipt of an order imposing civil
penalties. The 30-dav time requirement may be staved by the Department if negotiations are occurring between the aggrieved
parry and the Area Habitat Biologist and/or his/her supervisor. The Habitat Protection Services Division Manager or his/her
designee shall conduct a review and recommend a decision to the Director or its designee. If you are not satisfied with the results
of this informal appeal, a formal appeal may be filed.
B. FORMAL APPEALS (WAC 220-110-350) OF DEPARTMENT ACTIONS TAKEN PURSUANT TO RCW 75.20.100 OR
75.20.106:
A person who is aggrieved or adversely affected by the following Department actions may request an formal review of:
(A) The denial or issuance of a HPA, or the conditions or provisions made part of a HPA:
(B) An order imposing civil penalties; or
(C) Any other "agency action" for which an adjudicative proceeding is required under the Administrative Procedure Act,
Chapter 34.05 RCW.
e; request for a FORMAL APPEAL shall he in WRI"T`INC, to the Department of Fish and Wildlife, 600 Capitol Way North.
Olympia, Washington 98501-1091, shall be plainly labeled as "REQUEST FOR FORMAL APPEAL" and shall be RECEIVED
DURING OFFICE HOURS by the Department within 30-days of the Department action that is being challenged. The time period
for requesting a formal appeal is suspended during consideration of a timely informal appeal. If there has been an informal
appeal, the deadline for requesting a formal appeal shall be within 30-days of the date of the Department's written decision in
response to the informal appeal.
C. FORMAL APPEALS OF DEPARTMENT ACTIONS TAKEN PURSUANT TO RCW 75.20.103 or 75.20.160:
A person who is aggrieved or adversely affected by the denial or issuance of a HPA, or the conditions or provisions made part of a
HPA may request a formal appeal. The request for FORMAL APPEAL shall be in WRITING to the Hydraulic Appeals Board per
WAC 259-04 at Environmental Hearings Office, 4224 Sixth Avenue SE. Building Two - Rowe Six, Lacey, Washington 98504;
telephone 360/459-6327.
D. FAILURE TO APPEAL WITHIN THE REQUIRED TIME PERIODS RESULTS N FORFEITURE OF ALL APPEAL RIGHTS.
IF THERE IS NO TIMELY REQUEST FOR AN APPEAL, THE DEPARTMENT ACTION SHALL BE FINAL AND
UNAPPEALABLE.
Page 3 of 3
Pentec
V,lAONMENTA L
April 15,1998
Mrs. Carol Clute
7428 Ridge Way
Edmonds, WA 98020
Salmonid Presence/Absence Survey and Stream Reconnaissance
142210th Place North, Edmonds, Washington
Dear Carol:
On April 14, 1998, Pentec >«nvironmental, Inc. (Pentec), conducted a salmonid
presence/absence survey of the section of North Stream located at 14210th Place North,
Edmonds, Washington (subject -parcel). In addition, Pentec conducted a brief stream
reconnaissance on the section of North Stream downstream of the subject parcel.
Salmonid Presence/Absence Survey
Pentec conducted the salmonid presence/absence survey by electrofishing the 150-ft reach of
North Stream located on the subject parcel with a Smith -Root Model 15-B backpack electrofishing
unit. This reach of North Stream is approximately 3-ft wide and has a predominately gravel
substrate. The banks of the stream are vertical and about 1-ft tall. The ordinary high water mark
is the top of the 1-ft-tall bank on both sides of the stream. There is no evidence of bank instability
along this 150-ft reach of North Stream. No salmonids or other fish were observed during the
salmonid presence/absence survey.
Stream Reconnaissance
Pentec conducted a brief stream reconnaissance of North Stream downstream of the subject
parcel, looking for the presence of barriers to upstream fish passage. During the stream
reconnaissance, a ;year-round fish passage barrier was observed on the reach of North Stream that
runs along Driftwood Place. The barrier is a 6-ft waterfall and includes an 18-inch-deep pool
located at the base of the waterfall.
As we mentioned during our conversation yesterday, Pentec can assist you with preparation
of the State Environmental Policy Act (SEPA) checklist, Joint Aquatic Resource Permits
pentec Environmental, Inc -120 Third Avenue South, Suite 170 -Edmonds, WA 98=- Phone. (425) Tl5-4582 - Fax. (425) 7M9477
A4'z�fl�
Mrs. Carol Cute
April 15,1998
page 2
Application GARPA), or stream mitigation. To construct your stream crossings, you may need to
complete a JARPA to obtain a Hydraulic Project Approval (HPA) from the Washington State
Department of Fish and. Wildlife and possibly a stream mitigation plan. Pentec routinely
performs such services and would be happy to assist you. These additional services would
require an addendum to our original scope of work.
If you have any questions please call Scott Luchessa or me at (425) 77 3 682.
Sincerely,
Pentec Environmental, Inc.
Kerrie McArthur
Wetland/Marine Biologist
KAM/ds
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�'tyli: � '. ., ...� t�' {: `:;E • ; .' "".`\ ; I I �1f . � 's% / - �'�?�"{�y.' � ' i }y � F .7 S
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1 • /r� � �;y � f ,�f .rid�r� / t,,,`� ,+ tf, t�ti7fi'�K,1 )� ffy;lf,.{"' A:'' � £f�,!':'t$
EDMMDS DRAINAGE BASIN STUDY
URS CORPORATION
NORTHSTREAN DRAINAGE BASIN STUDY
TABLE D.9
SYSTEM INVENTORY
CHANNELS
PRMECTM FLOVS
ELEMENT :
NIDTH ;VELOCITY ;DISCHARGE;
EIISTING LAND USE
;
FUTURE
DEVELff?lENT
- N0. :
(INCHEES): (FPS) :
(CFS) ;
2 YR
10 YR 25 YR
100 YR :
2 YR
10 YR
2S YR
100 a 1
_ AZ :
48 : 6.10 ;
1Z.00 ;
1T.5 :
'-.7 : 54.9 :
46.0 :
19.9 ;
M2 ;
44.3 :
U.1 ;
A4 :
4G ; 43.72 :
349.79 :
13.2 ;
:3.0 ; 33.8 :
44.6 :
19.3 :
31.3 :
43.0 ;
54.4 ;
46 ;
46 ; 11.11 :
BUS ;
11.4 :
19.7 ; 29.1 :
38.9 :
17.3 :
27.9 :
3B.2 ;
48.2 ;
.4
27.9 :
38.2 :
4 2 :
" 410
�50 4.66
lZ:31T11.4
1
19.7 29.1
38.9
17.3 :
27.9 :
38.2 :
48.2 :
Ail ;
24 : 6.64 ;
39.86 :
11.7 :
2D.2 : 29.6 ;
3B.9 :
17.8 :
27.9 :
38.2 ;
46.6 :
A14 :
60 ; 6.41 ;
64.07 ;
10.6 :
18.0 : 25.8 :
335.3 ;
15.1 :
23.7 :
32.2 ;
40.5 :
A19 ;
48 ; 2.12 ;
25.44 :
2.0 :
4.0 ; 6.4 :
8.7 ;
4.3 :
1.0 :
9.2 :
11.7 ;
TOTAL
NOTES:
FeVIA SAS N STMY
Cal V iz s t t. I & I
EDMOADS DRAINAGE BASIN STUDY URS CDRPORATIDN
4ORTHMMM DRAINAGE BASIN STUDY TABLE D.9
SYSTEM INVENTORY
FIPE PROJECTED FLOPS
ELEMENT
;DIAMETER ;VELOCITY :DISCNARoi:
EIISTIN6 LARD USE
;
FUTURE DEVELOP Mff
NO.
;
(INCHES);
(FPS) ;
(CFS) ;
2 YR
10 YR
3 YR
100 YR ;
2 YR
10 YR
25 YR
100 YR
Al
;
36 ;
9.46
66.38 ;
13.5 ;
M 7;
34.9 ;
46.0 ;
19.9 ;
32.2 ;•
44.3 ;
56.1 ;
A.-
;
36 ;
13.38 ;
94.5B ;
13.2 ;
23.0 ;
33.8 ;
44.6 ;
19.3 ;
31.3 ;
43.0 ;
54.4 ;
A5
;
24 ;
6.07 ;
25.36 ;
13.2 ;
w.0 ;
33.8 ;
44.6 ;
19.3 ;
31.3 ; .
43.0 ;
54.4 ;
A7
;
18 ;
9.42 ;
16.65 ;
11.4
19.7
29.1 ;
38.9 ;
17.3 ;
27.9 ;
38.2 ;
48.2 ;
A7A
;
18 ;
9.42 ;
16.65.:
11.4 ;
19.7 ;
29.1 ;
38.9 ;
17.3 ;
27.9 ;
38.2 ;
48.2 ;
A9
;
24 ;
7.61 ;
23.91 ;
11.4 ;
19.7 ;
29.1 ;
38.9 ;
17.3 ;
77.9 ;
38.2 ;
48.2 ;
All
;
18 ;
7.34•:
12.96 ;
11.7 ;
20.2 ;
29.6 ;
38.9 ;
17.8 ;
27.9 1
32.2 ;
48.6 ;
A13
:
30 ;
21.09 :
1D3.50 ;
11.2 :
19.2 :
28.0 ;
37.2 :
17.1 :
26.7 :
36.5 :
46.3 :
Al;
;
24 C
16.49 :
51.81 ;
10.6 ;
16.0 :
25.8 :
33.3 :
15.1 ;
23.7 :
32.2 :
40.5 ;
Alb
:
24 1
17.31 :
54.39 :
6.4 :
11.0 :
16.4 :
21.8 :
9.7 :
15.5 :
21.0 :
27.3 ;
A17
:
30 ;
1.:7
45.98 :
6.4 :
11.0 :
16.4 :
21.8 :
9.7 :
15.5 :
21.0 :
27.3 :
A!E
:
24 :
17.44 :
54.79 :
7.0 :
4.0 :
6.4 ;
8.9 ;
4.3 :
7.0 :
9.2 :
11.9 ;
A20
;
12
3.:17 :
2.03 :
2.0 :
4.0 ;
6.4 :
9.0 :
4.8 :
7.1 :
9.3 :
12.5 ;
h21
;
15 :
3.73 :
4.58 :
2.0 :
4.0 :
6.4 :
9.0 :
4.8 :
7.1 :
9.3 ;
12.5 :
r=
:
15 :
4.42 ;
5.42 :
2.0 :
4.0 ;
6.4 :
9.0 :
4.8 :
7.1 :
9.3 :
13.0 :
'15.1
:
12 :
14.38 :
I1.30
4.8 :
7.7 :
10.9 :
14.2 ;
6.6 :
4.B :
13.2 :
16.6 :
1
:
12 :
12.40 :
9.74 :
2.9 :
4.5 :
b.: :
8.1 :
3.7 ;
5.6 :
7.5 :
9.4 ;
TOTAL
NOTES:
1g.Y 0es 19a9
V- „ N. ._..-.......
5 0
d
1
C
SHIPPEN RESIDENCE CULVERT SIZE
located near the intersection 'of
Euclid Avenue and 10th Place North, Edmonds
INTRODUCTION
Mr. Herb Shippen has retained LSA to prepare a plan for the installation of two culverts
to allow driveway construction into vacant single family lot, located near the intersection
of Euclid Avenue and 10th Place North in Edmonds. The property is divided by
Northstream Creek, and the only access route to the property is through a panhandle
portion of the lot which is currently blocked by the stream. Access to the bulk of the
useable area requires a second crossing. The stream was included in the City of
Edmonds basin study by URS, dated 1989. A Hydraulic Project Approval was obtained
from the Department of Fish and Wildlife. The conditions of the approval are attached.
The pipe size was selected to match the carrying capacity of the stream channel with
consideration of the estimated runoff from the basin, as documented in the 1989 URS
study. Although the basin build -out projects a peak flow of 48 cfs, it was calculated that
the channel capacity was less than that. Runoff rates that might exceed the channel
capacity would have opportunity to cross yard area and reenter the creek below the
second culvert. Since culverts will not further restrict the system carrying capacity, it is
anticipated they will not change the likelihood of the stream overtopping its bank.
The selected culvert size was a 36-inch diameter smooth wall pipe with a one percent
invert slope to match the slope of the creek channel. Although the Edmonds Drainage
Basin Study by URS (1989) showed improvement of the system using 30-inch diameter
pipes, the study did not appear to take into account a requirement for a sunken invert
that is presently required by the WDFW. The HPA issued by WDFW does indicate
that 20 percent of the pipe invert should be buried in the channel bottom. The loss of
20 percent of the invert of a 36-inch pipe gives it about the capacity of a 30-inch pipe.
Therefore, a 36-inch pipe is proposed for both culverts. Smooth wall pipe could be
concrete, reinforced concrete, or high -density polyethylene (HDPE). If cover over the
HDPE pipe is insufficient for traffic loading, a reinforced concrete slab could be placed
over the culvert to prevent pipe damage.
CALCULATIONS
Existing Channel Capacity.
The flow capacity of the existing stream channel sections were evaluated using
CivilTools software. Flows assumed to be at top of the bank. Channel data is based
on a field topography prepared in August 1999. A copy of a worksheet showing spot
elevations and'/ ft contours is attached.
The following are the output from the CivilTools program:
Lovell-Sauerland & Associates LSA No. 3907
August 11, 1999 Page 1
SECTION C
NATURAL CHANNELS
VARIABLES LIST:
Y - FLOW ELEVATION Q - FLOWRATE S - CHANNEL SLOPE
VARIABLE TO BE SOLVED (Y,Q OR S) ? Q Enter up to 20 cross-section points.
Enter <Return> only for distance to end.
Y (FT) ? 105.6
S (FT/FT) ? .0125
RESULTS
Q= 34.56 CFS
A= 4.28 SF
P= 7.70 FT
V= 8.07 FPS
F= 1.73 SUPER -CRITICAL FLOW
CROSS-SECTION POINTS
DIST ELEV COEFF DIST ELEV COEFF
------------------ ------------------
0 105.8 .02
2 105.3 .02
2.9 104.4 .02
5 104.1 .02
5.5 105.4 .02
8 105.7 .02
SECTION D NATURAL CHANNELS
VARIABLES LIST:
Y - FLOW ELEVATION Q - FLOWRATE S - CHANNEL SLOPE
VARIABLE TO BE SOLVED (Y,Q OR S) ? Q Enter up to 20 cross-section points.
Enter <Return> only for distance to end.
Y (FT) ? 106
S (FT/FT) ? .0125
RESULTS
Q= 61.10 CFS
A= 6.68 SF
P= 8.09 FT
V= 9.15 FPS
F= 1.61 SUPER -CRITICAL FLOW
CROSS-SECTION POINTS
DIST ELEV COEFF DIST ELEV COEFF
------------------ -----------------
0 106.1 .02
2.1 105.5 .02
3.3 104.3 .02
6.1 104.6 .02
6.9 106.1 .02
From the calculations it appears that if super -critical flow conditions can be maintained
in the channel during a peak runoff event, the maximum capacity of the channel is less
than 35 cfs before it overtops the bank and flows across the lawn. If something in the
channel or channel geometry cause the flow conditions to revert to sub -critical flow (a
probable scenario), the capacity would be something less than that.
Pipe Calculations.
The following page shows the calculated flows for a partially blocked pipe. At section
C, the channel depth at overflow is about 1.7 feet, or 20.5 inches. With a 36-inch
culvert having a depressed invert 7 inches below the channel flowline, and a bottom
slope of 1 percent to match the channel slope, the water surface would be at a stage
27.4 inches inside the pipe. At 26.5 inches the partially -blocked pipe has a capacity of
40 cfs. Therefore, in this configuration, the pipe generally matches the hydraulic
capacity of the existing channel.
Lovell-Sauerland & Associates LSA No. 3907
August 11, 1999 Page 2
The following table models a culvert that has its invert partly full of gravel or other debris. The table calculates the hydraulic capacity of the pipe in discreet elevation increments, and
adjusts for the gravel surface at the invert. The equation used to determine the flowrate with an open channel condition is Q = 1.49/N * A * (R ^ (2/3)) * (S ^ (0.5))
Assumptions:
Friction Factor, n = 0.011 for pipe section, and 0.025 for the gravel section
Pipe slope 0.01 Dia = 3 feet
Fill width in pipe invert 2.37 ft Invert to crown distance 2.40 feet
Pipe filled to 0.6 feet = 7 inches
Depth Depth Adj. Top Theta Area Adj. Wet Adj. Hyd Adj. Q Wgtd Adj. V Adj
inches ft Depth Width SF Area Per Wet Rad Hydr cfs n" Q fps V
ft ft radians SF Per. R Rad fps
1.51 0.12 0.00 1.201 0.82 0.10 0.001 1.23 0.00 0.08 NA 0.31 0.000 N 2.61 NA
3.0
0.25
0.00
1.66
1.17
0.28
0.00
1.76
0.00
0.16
NA
1.1
0.000
NM
4.0
NA
4.5
0.37
0.00
1.98
1.45
0.51
0.00
2.17
0.00
0.24
NA
2.6
0.000
NM
5.2
NA
6.0
0.50
0.00
2.24
1.68
0.77
0.00
2.52
0.00
0.31
NA
4.8
0.000
NAI
6.2
NA
7.0
0.581
0.00
2.37
1.83
0.971
0.00
2.74
0.00
0.35
NA
6.5
0.000
NN
6.8
NA
8.5
0.71
0.11
2.55
2.03
1.27
0.31
3.04
2.68
0.42
0.481
9.7
0.023
1.1
7.6
3.9
10.0
0.83
0.23
2.69
2.22
1.60
0.64
3.33
2.97
0.48
0.541
13.3
0.022
2.1
8.3
4.5
11.5
0.96
0.36
2.80
2.40
1.95
0.98
3.60
3.24
0.54
0.60
17.5
0.021
4.q
9.0
5.0
13.0
1.08
0.48
2.88
2.58
2.30
1.33
3.87
3.50
0.59
0.66
22.0
0.020
7.4
9.6
5.5
14.51
1.21
0.61
2.94
2.75
2.66
1.70
4.13
3.76
0.65
0.71
27.0
0.020
10.1
10.1
6.0
16.0
1.33
0.73
2.98
2.92
3.04
2.07
4.38
4.01
0.69
0.76
32.2
0.019
13.3
10.6
6.4
17.5
1.46
0.86
3.00
3.09
3.41
2.44
4.63
4.26
0.74
0.80
37.7
0.019
1-6-3
11.0
6.8
19.0
1.58
0.98
3.00
3.25
3.78
2.82
4.88
4.51
0.78
0.841
43.3
0.018
20.3
11.4
7.2
20.5
1.71
1.11
2.97
3.42
4.16
3.19
5.13
4.77
0.81
0.87
48.9
0.018
24.1
11.8
7.6
22.0
1.83
1.23
2.93
3.59
4.53
3.56
5.38
5.02
0.84
0.90
54.6
0.018
28.1
12.1
7.9
23.5
1.96
1.36
2.86
3.76
4.89
3.92
5.64
5.28
0.87
0.93
60.1
0.017
32.1
12.3
8.2
25.0
2.08
1.48
2.76
3.94
5.24
4.27
5.91
5.55
0.89
0.94
65.5
0.017
36.1
12.5
8.4
6.5
2.21
1.61
2.64
4.13
5.58
4.61
6.19
5.82
0.90
0.96
70.5
0.017
40.
12.6
8.7
28.0
2.33
1.73
2.49
4.32
5.90
4.93
6.48
6.11
0.91
0.96
75.1
0.016
43.
12.7
8.9
29.5
2.461
1.86
2.31
4.53
6.20
5.23
6.79
6.43
0.91
0.96
79.0
0.016
47.1
12.7
9.0
31.0
2.58
1.98
2.08
4.76
6.47
5.51
7.13
6.77
0.91
0.96
82.2
0.016
50.1
12.7
9.1
32.5
2.71
2.11
1.78
5.01
6.72
5.75
7.52
7.16
0.89
0.94
84.3
0.016
52.
12.6
9.1
34.0
2.83
2.23
1.37
5.33
6.91
5.95
8.00
7.63
0.86
0.91
85.0
0.015
12.3
9.1
35.5
2.96
2.36
0.701
5.81
7.05
6.08
8.72
8.35
0.81
0.841
82.9
0.015
54.0
11.8
8.9
36.0
3.00
2.40
0.00
6.28
7.07
6.10
9.42
9.06
0.75
0.78
79.0
0.015
52.5
11.2
8.6
Lovell-Sauerland & Associates LSA No. 3907
August 11, 1999 Page 3
SUMMARY
Assuming that the water can reach the property through the upstream system, it
appears that the channel would already be subject to overflowing its banks in a 100-
year event, and that the addition of a culvert would not significantly increase the
likelihood of an overflow. The effects of an overflow on the property are for the most
part limited to the property.
Therefore, the pipe size provided, although not large enough to convey the "build -out"
100-year storm for the entire basin, should be adequate for the purpose proposed.
F ^dvt t-,�ns
is
EXPIRES 7/4
Lovell-Sauerland & Associates LSA No. 3907
August 11, 1999 Page 4
HPA CONDITIONS
Conditions of Washington State Department of Fish and Wildlife Hydraulic Project
Approval. The WSDFW has issued an Hydraulic Project Approval, dated February 13,
1999. The contractor shall obtain a copy of the HPA and abide by the conditions
therein. These include, but are not limited to the following:
Timing limitations: The project shall be completed by October 1, 1999. Work may
commence when the stream is dry or in a low -flow condition. If the stream is not dry
or in a low -flow period, work shall not start until low flow occurs or after June 1,
1999.
2. Work shall be accomplished per plans and specifications submitted to the
Washington Department of Fish and Wildlife, except as modified by this Hydraulic
Project Approval. These plans reflect design criteria per chapter 220-110 WAC.
These plans reflect mitigation procedures to significantly reduce or eliminate impacts
to fish resources. A copy of these plans shall be available on site during
construction.
3. The culvert shall be placed on a flat gradient with the bottom of the culvert placed
below the level of the streambed a minimum of 20 percent of the culvert diameter for
a round culvert, and 20 percent of the culvert's rise for an elliptical culvert. The 20
percent placement below the streambed shall be measured at the culvert outlet.
4. The culvert shall be installed to maintain structural integrity to the 100-year peak flow
with consideration of the debris likely to be encountered.
5. The culvert shall be installed and maintained to avoid inlet scouring and to prevent
erosion of stream banks downstream of the project.
6. The culvert shall be installed in the dry or in isolation from the stream flow by the
installation of a bypass flume or culvert, or by pumping the stream flow around the
work area. The bypass shall be of sufficient size to pass all flows and debris for the
duration of the project.
7. Neither culvert shall not exceed 30 feet in total length.
8. Disturbance of the streambed and banks shall be limited to that necessary to place
the culvert and any required channel modification associated with it. Affected
streambed and bank areas outside the culvert and associated fill shall be restored to
pre -project configuration following installation of the culvert.
9. Prior to releasing the water flow to the project area, all bank protection or armoring
shall be completed.
10. Erosion control methods shall be used to prevent silt -laden water from entering the
stream. These may include, but are not limited to, straw bales, filter fabric, temporary
Lovell-Sauerland & Associates LSA No. 3907
August 11, 1999 Page 5
-- : ;r .-
sediment ponds, check dams of pea gravel -filled burlap bags or other material, and/or
immediate mulching of exposed areas.
11. If high flow conditions that may cause siltation are encountered during this project,
work shall stop until the flow subsides.
12. Extreme care shall be taken to ensure that no petroleum products, hydraulic fluid,
fresh cement, sediments, sediment -laden water, chemicals, or any other toxic or
deleterious materials are allowed to enter or leach into the stream.
13. A copy of the HPA shall be kept on the site at all times.
Lovell-Sauerland & Associates LSA No. 3907
August 11, 1999 Page 6
a
x 50, 5
O cr le,
L
� SO�x 50�x SO�x
JVJ
ZO�x Zp�x Zp x ZOO
O�' Z
O x
O�x
O
ZO�,x
x x
O
Z
1,4
loci L14
14 ` ti
y x
y 00 O x �d00� �0c,0�,�
ZO�x �O�x 0 NLLSIX3
c1
�r
x
x
x
Zp`� Otis L Oi,+ 50�x 9rO 99`
ZoIx
Zp�x ZO x 14 0ti�'w�� v . `�'
o�' d4 Zti `'4�� yti ZO x Z Ns N _ m
yp�x
O /
C;4 �/
/nc.13`411
June 24, 1999
Craig Campbell
Lovell Sauerland
19400 33rd Ave. West
Lynnwood, WA 98036
CITY OF EDMONDS
:21 TH AVENUE NORTH - EDMONDS. 'NA 98020 - (425) 771.0220 - FAX (425) 771-0221
DEVELOPMENT SERVICES DEPARTMENT
Planning - Building - Engineering
Subject: Determination regarding Critical Areas Checklist # 98-97
Dear Applicant:
BARBARA FAHEY
MAYOR
Enclosed please find a copy of the Critical Areas Checklist you submitted. The "DETERMINATION" reached by the City
is located on the reverse side of the form (bottom of page).
It is very important for you to retain a copy of this Critical Areas Checklist "DETERMINATION" for your records.
_. ................
IMPORTANT INFORMATION.T.
PLEASE EXAMINE THIS" DETERMINATION" FOR ADDITIONAL REQUIREMENTS. YOU MAY NEED TO SUBMIT
ADDITIONAL INFORMATION SUCH AS AN ENVIRONMENTAL CHECKLIST OR CRITICAL AREAS STUDY.
The 'DETERMINATION' for the Critical Areas Checklist you submitted is a site -specific determination not a
project -specific determination.
You must submit a copy of the CRITICAL AREAS CHECKLIST and DETERMINATION WITH ALL .4111111111
PERMIT APPLICATIONS or YOUR APPLICATION WILL NOT BE PROCESSED.
Permit applications include the following:
Building Permits
Conditional Use Permits
Subdivisions
Variances
Applications to the ADB* Land Use Applications
Any other development permit applications.
cc: Phil Lund
Enc: Critical Areas Determination
Thank you.
Sharia Graham
Planning Secretary
* Architectural Design Board
Incorporated August 11, 1890
Sister City - Hekinan, Japan
City of Edmonds
Critical Areas Determination
Applicant: Craig Campbell — LSA Determination #
Project Name: N/A Permit Number:
CA-98-97
N/A
Site Location: 1422 101h Place North Property Tax Acct #: 5319-041-003-0006
Project Description:
Non project specific
Determination: Study Complete
On April 4, 1998, a Critical Area Determination was completed at the above noted address. Due
to the presence of North Stream Creek flowing through the property, a "Study Required"
determination was issued.
The applicant has provided a stream/salmonid survey report from Pentec Environmental dated
April 15, 1998. It found no presence of salmonids and barriers downsteam would prevent future
possibilities of salmonid habitat.
A Hydrallic Project Approval (HPA) has also been obtained from the Washington Department of
Fish and Wildlife issued February 13, 1999 to culvert the stream. All conditions of the HPA
must be followed.
Any development or permit proposal is subject to SEPA review due.
The "Study Required" element of the Critical Area section of the ECDC has been
completed.
Karissa Kawamoto
Name
6/23/99
Date
City of Edmonds
CRITICAL AREAS CHECKLIST
fie C itical :\rcas Checklist conta,,ned on this form is
co he tilled )ut my any person preparing a
Deg etunmznt I'e, mtc .Application for the City of
Edmonds prior co hisfher submittal of a development
pernic to the Citv
The purpose of the Checklist is to enable City staff to
determine whether anv potential Critical :areas are. or
may be, prescat on the subject propernr. The
intormauk)n netded to t:omplete the Checklist should
be easily available Cream observation: of the site or
data available at Cit1' Hall (Cr irical .Areas i.nvenrones.
maps. or soil suR} sl.
all a-ur)ltcanr. or :us, .:II -AIL
the checklist. sign and •.:ate it. anti ui�lnu ;1 rlt t}tt
Citti. The City :11c:1'.'l .'1 •i, ntakt: t
precursory site visit. Inc makt:.l ca llllil;;lllttn ,lr tht
subsepuent steps neces�il,. �i) t t lift?It ;t .I 1�:':�I�thltlCrll
permit application.
Please submit a vicini". nap aio _
copy- of this form io a»i�t i�it� 1;:.'1 :n lill�lillts :.ultt
locating the speciric piec'-� 01.
this form. In atidilion. :.hQ :u)"*',:::r.; I1::11 r,� ltttl�
ocher pertinent inr0rrn:l110!1
man. etc.) or Stuiii�'s :n ?r:iuitc:i l: \I 1 ,,I:• :t::;;ll ;t
tU JSSi>t Staff :It
assessatent or the site
I have t:omplete:.i the actached Critical Areas Checklist and arest chat tile
best of my kno\-vledge t.till Out the appropriate column belo�t 1.
Owner/Applicamr.
Name
Street Address
City Matz Zip
Telephone
SiQnarure
Date
kpplicant RepresentativC:
Name L6UGLL S��ut.►—IQ�ICL
Street .Address
City Stare 17)
-7-7
�..� .._...._ -- •-- -
Telephone,,.-,
S i (nature
r )
Date
(ltv01')
c-.rcccpnUn,jJrt3%cac1. tJo:
170 7n"J miti-w4nrrq-l-1';nn1 866L-ZL9-SZV 0T:9T 6661/L0/90
City of Edmonds
4
,jW CRITICAL AREAS CHECKLIST
N
The Critical Areas Checklist contained on this form is
to be filled out by any person preparing a
Development Permit Application for the City of
Edmonds prior to his/her submittal of a development
permit to the City.
The purpose of the Checklist is to enable City staff to
determine whether any potential Critical Areas are, or
may be, present on the subject property. The
information needed to complete the Checklist should
be easily available from observations of the site or
data available at City Hall (Critical Areas inventories,
maps, or soil surveys).
An applicant, or his/her representative, must fill out
the checklist, sign and date it, and submit it to the
City. The City will review the checklist, make a
precursory site visit, and make a determination of the
subsequent steps necessary to complete a development
permit application.
Please submit a vicinit-' map along :-ith the signed
copy of this form to assist City staff in finding and
locating the specific piece of property described on
this form. In addition, the applicant shall include
other pertinent information (e.g., site plan, topography
map, etc.) or studies in conjunction with this Checklist
to assist staff in completing their preliminary
assessment of the site
I have completed the attached Critical Areas Checklist and attest that the answers provided are factual, to the
best of my knowledge (fill out the appropriate column below). .
Owner/Applicant:
Name
Street Address
City State Zip
Telephone
Signature
Date
A M,esentative:
bUAIJ
Name
Street Address L
rl�nAb /QS Ltq— 21 ,
City State Zip
�i�FZV6
TeleDhor(e
Signature ( 'r
c:rccepdonljanalcac1. doc
Date
(over)
M'►' < " %� CA FILE NO.
Critical Areas Checklist
------------------------------------------------------------
Site Information (soils/topography/hydrolo /vegetation)
1. Site Address/Location: 26
2. Property Tax Account Number: 3 �� ✓� v
3. Approximate Site Size (acres or square feet): 11/97(
4. Is this site currently developed? yes; 4no.
If yes; how is site developed?
5. a general site topography. Check all that apply.
Flat: less than 5-feet elevation change over entire site.
Rolling: slopes on site generally less than 15% (a vertical rise of 10-feet over a
horizontal distance of 66-feet).
Hilly: slopes present on site of more than 15% and less than 30% ( a vertical rise of
10-feet over a horizontal distance of 33 to 66-feet).
Steep: grades of greater than 30% present on site (a vertical rise of 10-feet over a
horizontal distance of less than 33-feet).
Other (please describe):
6. Site contains areas of year-round standing water: ; Approx. Depth:
7. Site contains areas of seasonal standing water: ; Approx. Depth:
What season(s) of the year?
8. Site is in the floodway floodplain of a water course.
9. Site contain a r e or an area where water flows across the grounds surface? Flows are year-
round? Flows are seasonal? (What time of year? ).
10. Site is primarily: forested ; meadow shrubs : mixed
urban landscaped (lawn,shrubs etc)
11. Obvious wetland is present on site:
Fi L9 3907
HYDRAULIC PROJECT APPROVAL state ofwaswnvon
�d RCW 75.20.100 or RCW 75.20.108 Region 4 Oc orFlti asd wlWllre
Region a omce
FM.+ 16019`1W Creek Boakword
MIX Mill Creek. Washinglon M12
DATE OF ISSUE: February 13. 1999 LOG NUMBER: 00-D7682-01
PERIVIITTEE
Herbert Shippen
c/o 19400 - 33rd Ave. W. -#200
Lynnwood, Washington 98036
(425) 776-7958
MIAMI •' •►ay:4•1 •
Lovell-Sauerland & Associates, Inc.
ATTENTION: C. Campbell
19400 - 3')1 Ave. Suite 206
Lynnwood, Washington 98037
(425)775-1591
PROJECT DES C-RT-.UTT0N: L-ista' r.:'^. -==_=t ou!' C-0 tJ tn'C.t er j.
PROJECT LOCATION: 1422 - 10' Place North, Edmonds, Washington
# WRIA WATER BODY TRIBUTARY TO 1/4 SEC. SEC. TOWNSHIP RANGE COUNTY
1 08.0008 North Stream Creek Puget Sound SE 13 27 North 03 East Snohomish
NOTE: This culvert is proposed for installation in a location where fish passage is not a concern.
PROVISIONS
1. TIMING LIMITATIONS: The project may begin Immediately and shall be completed by October 1, 1999,
provided:
a. If the stream is dry or in a low -flow period, work may start immediately. If the stream is not dry or in a low -flow
period. work shall not start until low flow occurs or after June 1, 1999.
2. Work shall be accomplished per plans and specifications submitted to the Washington Department of Fish and
Wildlife, except as modified by this Hydraulic Project Approval. These plans reflect design criteria per Chapter 220-
110 WAC. These plans reflect mitigation procedures to significantly reduce or eliminate impacts to fish resources.
: copy of these plans shall be available on site during conct'Uction.
3. The culvert shall be placed on a flat gradient with the bottom of the culvert placed below the level of the streambed a
minimum of 20 percent of the culvert diameter for a round culvert, and 20 percent of the culvert's rise for an elliptical
culvert. The 20 percent placement below the streambed shall be measured at the culvert outlet.
4. The culvert shall be installed to maintain structural integrity to the 100-year peak flow with consideration of the
debris likely to be encountered.
5. The culvert shall be installed and maintained to avoid inlet scouring and to prevent erosion of stream banks
downstream of the project.
6. The culvert shall be installed in the dry or in isolation from the stream flow by the installation of a bypass flume or
culvert, or by pumping the stream flow around the work area. The bypass shall be of sufficient size to pass all flows
and debris for the duration of the project.
Pagel of 3
HYDRAULIC PROJECT APPROVAL Stateorw"Wapa..
d RCW 75.20.100 or RCW 75.20.108 Department of FM and Wedg&
01MOW 16019 MU creek B..la..e�
1917.UL1P& MITI Credo, W=W p , 9012
DATE OF ISSUE: February 13. 1999 LOG NUMBER: 00-D7682-01
7. Neither culvert shall not exceed 30 feet in total length.
8. Disturbance of the streambed and banks shall be limited to that necessary to place the culvert and any required
channel modification associated with it. Affected streambed and bank areas outside the culvert and associated fill
shall be restored to preproject configuration following installation of the culvert.
9. Prior to releasing the water flow to the project area, all bank protection or armoring shall be completed.
10. Erosion control methods shall be used to prevent silt -laden water from entering the stream. These may include, but
are not limited to, straw bales, filter fabric, temporary sediment ponds, check dams of pea gravel -filled burlap bags or
other material, and/or immediate mulching of exposed areas.
11. If high flow conditions that may cause siltation are encountered during this project. work shall stop until the flow
subsides.
12. Extreme care shall be taken to ensure that no petroleum products. hydraulic fluid, fresh cement, sediments, sediment -
laden water, chemicals, or anv other toxic or deleterious materials are allowed to enter or leach into the stream.
SEPA: Exempt, no other non-exempt permits
APPLICATION ACCEPTED: January 28, 1999 ENFORCEMENT OFFICER: Lambert 041 [P3]
Tony Oppermann (425) 379-2309 for Director
Area Habitat Biologist WDFW
GENERAL PROVISIONS
This Hydraulic Project Approval (HPA) pertains only to the provisions of the Fisheries Code (RCW 75.20). Additional authorization
from other public agencies may be necessary for this project.
This HPA shall be available on the job site at all times and all its provisions followed by the permittee and operator(s) performing the
work.
This HPA does not authorize trespass.
The person(s) to whom this HPA is issued may be held liable for any loss or damage to fish life or fish habitat which results from
failure to comply with the provisions of this HPA.
Failure to comply with the provisions of this Hydraulic Project Approval could result in a civil penalty of up to one hundred dollars
per day or a gross misdemeanor charge, possibly punishable by fine and/or imprisonment.
Page 2 of 3
HYDRAULIC PROJECT APPROVAL State of Washington
pasr�d RCW 75.20.100 or RCW 75.20.108 Region 4 01 Ic Flab asd Wildlife
Region s ORlee
1oar 16019 Mill Creels Boalevwd
WULN Mill Creek. Washiogioo 9012
DATE OF ISSUE: February ! 3. 1999 LOG NUMBER: 00-D7682-01
All HPAs issued pursuant to RCW 75.1-0.100 or 75. 20.160 are subject to additional restrictions, conditions or revocation if the
Department of Fish and Wildlife determines that new biological or physical information indicates the need for such action. The
permittee has the right pursuant to Chapter 34.04 RCW to appeal such decisions. All HPAs issued pursuant to RCW 75.20.103 may
be modified by the Department of Fish and Wildlife due to changed conditions after consultation with the permittee: PROVIDED
HOWEVER. that such modifications shall be subject to appeal to the Hydraulic Appeals Board established in RCW 75.20.130.
APPEALS - GENERAL INFORMATION
IF YOU WISH TO APPEAL A DENIAL OF OR CONDITIONS PROVIDED IN A HYDRAULIC PROJECT APPROVAL, THERE
ARE INFORMAL AND FORMAL APPEAL PROCESSES AVAILABLE.
A. INFORMAL APPEALS (WAC 220-110-340) OF DEPARTMENT ACTIONS TAKEN PURSUANT TO RCW 75.20.100,
75.20.103, 75.20.106. AND 75.20.160:
A person who is aggrieved or adversely affected by the following Department actions may request an informal review of:
(A) The denial or issuance of a HPA. or the conditions or provisions made part of a HPA: or
(B) An order imposing civil penalties.
It is recommended that an aggrieved party contact the Area Habitat Biologist and discuss the concerns. Most problems are
resolved at this level, but if not, you may elevate your concerns to his/her supervisor. A request for an NFORNIAL REVIEW
shall be in WRITING to the Department of Fish and Wildlife. 600 Capitol Way North. Olympia. Washington 98501-1091 and
shall be RECEIVED by the Department within 30-days of the denial or issuance of a HPA or receipt of an order imposing civil
penalties. The 30-day time requirement may be stayed by the Department if negotiations are occurring between the aggrieved
party and the Area Habitat Biologist and/or his/her supervisor. The Habitat Protection Services Division Manager or his/her
designee shall conduct a review and recommend a decision to the Director or its designee. If you are not satisfied with the results
of this informal appeal, a formal appeal may be filed.
B. FORMAL APPEALS (WAC 220-110-350) OF DEPARTMENT ACTIONS TAKEN PURSUANT TO RCW 75.20.100 OR
75.20.106:
A person who is aggrieved or adversely affected by the following Department actions may request an formal review of:
(A) The denial or issuance of a HPA, or the conditions or provisions made part of a HPA:
(B) An order imposing civil penalties: or
(C) , Any other "agency action" for which an adjudicative proceeding is required under the Administrative Procedure Act,
Chapter 34.05 RCW.
e; request for a FORMAL APPEAL shall_ be in WRIT TNI C to the Department of Fish and Wildlife, 600 Capitol Way North.
Olympia. Washington 98501-1091, shall be plainly labeled as "REQUEST FOR FORMAL APPEAL" and shall be RECEIVED
DURING OFFICE HOURS by the Department within 30-days of the Department action that is being challenged. The time period
for requesting a formal appeal is suspended during consideration of a timely informal appeal. If there has been an informal
appeal, the deadline for requesting a formal appeal shall be within 30-days of the date of the Department's wnrten decision in
response to the informal appeal.
C. FORMAL APPEALS OF DEPARTMENT ACTIONS TAKEN PURSUANT TO RCW 75.20.103 or 75.20.160:
A person who is aggrieved or adversely affected by the denial or issuance of a HPA, or the conditions or provisions made part of a
HPA may request a formal appeal. The request for FORMAL APPEAL shall be in WRITING to the Hydraulic Appeals Board per
WAC 259-04 at Environmental Hearings Office, 4224 Sixth Avenue SE. Building Two - Rowe Six. Lacey, Washington 98504;
telephone 360/459-6327.
D. FAILURE TO APPEAL WITHIN THE REQUIRED TIME PERIODS RESULTS N FORFEITURE OF ALL APPEAL RIGHTS.
IF THERE IS NO TIMELY REQUEST FOR AN APPEAL, THE DEPARTMENT ACTION SHALL BE FINAL AND
UNAPPEALABLE.
Page 3 of 3
Pentec
V�110 MEN TAL
April 15,1998
Mrs. Carol Clute
7428 Ridge Way
Edmonds, WA 98020
Salmonid Presence/Absence Survey and Stream Reconnaissance
142210th Place North, Edmonds, Washington
Dear Carol:
On April 14,1998, Pentec Environmental, Inc. (Pentec), conducted a salmonid
presence/absence survey of the section of 'North Stream located at 1422 loth Place North,
Edmonds, Washington (subject parcel). In addition, Pentec conducted a brief stream
reconnaissance on the section of North Stream downstream of the subject parcel.
Salmonid Presence/Absence Survey
Pentec conducted the salmonid presence/absence survey by electrofishing the 150-ft reach of
North Stream located on the subject parcel with a Smith -Root Model 15-B backpack electrofishing
unit. This reach of North Stream is approximately 3-ft wide and has a predominately gravel
substrate. The banks of the stream are vertical and about 1-ft tall. The ordinary high water mark
is the top of the 1-ft-tall bank on both sides of the stream. There is no evidence of bank instability
along this 130-ft reach of North Stream. No salmonids or other fish were observed during the
salmonid presence/absence survey.
Stream Reconnaissance
Pentec conducted a brief stream reconnaissance of North Stream downstream of the subject
parcel, Iooking for the presence of barriers to upstream fish passage. During the stream
reconnaissance, a year-round fish passage barrier was observed on the reach of North Stream that
nuns along Driftwood Place. The barrier is a 6-ft waterfall and includes an 18-inch-deep pool
located at the base of the waterfall.
As we mentioned during our conversation yesterday, Pentec can assist you with preparation
of the State Environmental Policy Act (SEPA) checklist, joint Aquatic Resource Permits
.i,
Pentec Environmental, Inc -120 Third Avenue South, Suite 170 - Edmonds, WA 98=- Phone. (425) 775-46a2-Fax. (425)778.9417
Mrs. Carol Clute
April 15,1998
page ?
Application (DARPA), or stream mitigation. To construct your stream crossings, you may need to
complete a JARPA to obtain a Hydraulic Project Approval (HPA) from the Washington State
Department of Fish and Wildlife and possibly a stream mitigation plan. Pentec routinely
performs such services and would be happy to assist you. These additional services would
require an addendum to our original scope of work.
If you have any questions please call Scott Luchessa or me at (425) T-4682.
Sincerely,
Pentec Environmental, Inc.
Kerrie McArthur
Wetland/Marine Biologist
KAM/ds
oo37so01win� ,.00e
t y., 3S i• ,, ,�x / ' .� _.-�e �, J// ✓ Yy �' r:,. ��l'. �j .: .�'�' � f 1
14
/ll/ +zwj
!
1 .•.e I.F
i
I
_ �i% ° �/' .t' .7' ^/ ./'.'% �•'�r4```• .� �� �. /B 5 * f S r. .,J r . Il. Y.j ;; >i;•, rr' t'.' a•r� I:' ( �•�
Sri
7Clint
l{��(t�ltld111���1/1�/r)
� / � � J 1' - 1 r � ,I :../ / � :.r, � `llll ,/ � /, � •�, ! F f � � �, �_• i' f..'' i. 1 IIIIIII II IIII
/! , f'' /� ;�./ .. /�/+ f// Ty� (// / I Ili (t 11.f't ,.t 1 1:• ,J Y I���Y•t•+ t t.'
' . i . � I 1 ' I ! ! ) ... �, ), � F 1 I I � `I�� t• � 1}}! fP ,• ' r j� . � �'� r�syLi••iuf ,, n ''vl' /, C
,/ � ! _3, ... 3,1 <I3.. ''!1 +1. t., llfll�l7l fr �• .. �., •�_i�' ^►� I�,'.�1 i/ �
7 / / / ,% 1.w,-r i, : � a 1 .•,3 �'.', ,•'Yj r 'y ..YN,t� 1 e!• i ,111�ss;•� j, ill.' 3�. q
� f• 1j ,� � � , .11 /' i r.. i� �,` .3 5� .r,,�`� /�I• eft t1' � '•.� �t:�
/i
(\ ///�i�l� ��� / : I s � � � 1 / J��Illty 1'I 1 I 1 III 111�✓� i` -d t v: �',- a
Y� l«�i� •1 '� I� ' � Il. �'`r...�_.s1��it a '�9� �ti'• ` '+ �.`'• :, �,r'f
,S�'� 1 S' ,� _� �``(1"-, � ,•��•' •%; is f t�
Ilk
a,� / ; r�,' - P U 6 E T /OAR .
I /u - \ ,
r III , • ,t
EDMMDS DRAINAGE BASIN STUDY
URS CORPORATION
NORTMSTREAM
DRAINAGE BASIN STUDY
TABLE D.9
551 1NVENTORY
CHANNELS
PIMELTED FLDYS
ca.ElW ;
NIDTH ,VELOCITY ;DISCHARGE:
EIISTIM6 LAND USE
;
FUTURE
DEVELOPMENT
;
(IMM);
(FPS) ;
VS) ;
2 YR
10 YR
25 YR
100 YR ;
2 YR
10 YR
3 YR
100 YR
_ 42 ;
4B ;
6.10 ;
122.00 ;
1"s.9' ;
1-.7 ;
34.9 ;
46.0 ;
19.9 ;
.2 ;
44.3 ;
56.1
44 ;
46 ;
43.72 ;
349.79 ;
13.2 ;
23.0 ;
33.8 ;
44.6 ;
19.3 ;
31.3 ;
43.0 ;
54.4
A6 ;
46 ;
11.11
88.85 ;
11.4 ;
19.7 ;
25.1 ;
38.9 ;
17.3 ;
27.9 ;
3.2 ;
48.2 ;
.Z
27.9;
38.2;
4
" Alo
5
4.66
_;,')131
11. 4
1 . ,
.1
3B.9;
17.3 ;
27.9 ;
38.2 ;
48.2 ;
Al2 ;
24 ;
6.64 ;
39.86 ;
11.7 ;
20.2 ;
29.6 ;
3B.9 ;
17.8 ;
27.9 ;
3B.2 (
48.6 ;
A14 ;
60 ;
6.41 ;
64.07 ;
10.6 ;
18.0 ;
25.9 ;
33.3 ;
15.1
23.7 ;
32.2 ;
40.5 ;
A19 ;
4B ;
2.12 ;
25.44 ;
2.0 ;
4.0 ;
6.4 ;
B.9 ;
4.3 ;
7.0 ;
9.2 ;
11.9 ;
TOTAL
NOTE :
'Fzvµ so61 N sixvy
Cal v QS t. ��
EDAUNDS DRAINAGE BASIN STUDY URS CORPORATION
4ORTHSTAEAM DRAINAGE BASIN STUDY TABLE D.9
STSTEM INVENTORY
PIPES PROJECTED FLOWS
ELEMr'NT
;DIAMETER ;VELOCITY ;DISCHAR E;
EIISTING LAUD USE
;
FUTURE
DEVELD
Mff
N0.
;
(INCHES);
(FPS) ;
(CFS) ;
2 YR
10 YR
25 YR
100 YR ;
1 YR
10 YR
25 YR
100 YR
Al
36 ;
9.46 ;
U.38 ;
13.5 ;
M 7
34.9 ;
46.0 ;
19.9 ;
32.2 ;•
44.3 ;
56.1 ;
A3
;
36 ;
I3.32 ;
94.58 ;
13.2 ;
23.0 ;
33.8 ;
44.b ;
19.3 ;
31.3 ;
43.0 ;
54.4 ;
AS
;
24 ;
6.07 ;
225.36 ;
13.2 ;
w:0 ;
".8 ;
44.6 ;
19.3 ;
31.3 ;
43.0 ;
54.4 ;
A7
;
18 ;
9.42 ;
16.65 ;
11.4 ;
19.7 ;
29.1 ;
38.9 ;
17.3 ;
27:9 ;
39.2 ;
48.2 ;
A7A
;
18 ;
9.42 ;
16.65 ;
11.4 ;
19.7 ;
29.1 ;
3B.9:;
17.3 ;
27.9 ;
36.2 ;
48.2 ;
A9
;
24 ;
7.61 ;
23.91 ;
11.4 ;
19.7 ;
29.1 ;
3B.9 ;
17.3 ;
27.1 ;
3B.2 (
48.2 ;
All
;
18 ;
7.34•;
12.96 ;
11.7 ;
20.2 ;
29.6 ;
38.9 ;
17.8 ;
V.9 ;
3B.2 ;
48.6 ;
A13
;
30 ;
21.09 ;
103.50 ;
11.2 ;
19.2 ;
2B.0 ;
37.2 ;
17.1 ;
26.7 ;
36.5 ;
46.3 ;
A15
;
24 C
16.49 ;
51.91 ;
10.6 ;
18.0 ;
25.8 ;
33.3 ;
15.1 ;
23.7 ;
32.2 ;
40.5 ;
A16
;
24 ;
17.31 ;
54.39 ;
6.4 ;
11.0 ;
16.4 ;
21.8 ;
9.7 ;
15.5 ;
21.0 ;
27.3 ;
A17
;
30 ;
9.37 ;
45.98 ;
6.4 ;
11.0 ;
16.4 ;
21.8 ;
9.7 ;
15.5 ;
21.0 ;
27.3 ;
41E
;
24 ;
17.44 ;
54.79 ;
7.0 ;
4.0 ;
6.4 ;
8.9 ;
4.3 ;
7.0 ;
9.2 ;
11.9 ;
U0
;
12;
3.22;
2.0
2.0;
4.0;
6.4;
9.0;
4.8;
7.1;
'9.3;
12.5;
hl
;
15 ;
3.13 ;
4.5B ;
2.0 ;
4.0 ;
6.4 ;
9.0 ;
4.8 ;
7.1 ;
9.3 ;
12.5 ;
r=
;
15 ;
4.42 ;
5.;2 ;
2.0 ;
4.0 ;
6.4 ;
9.0 ;
4.8 ;
7.1 ;
9.3 ;
13.0 ;
'15.1
;
12 ;
14.3B ;
11.30 ;
4.8 ;
7.7 ;
10.9 ;
14.2 ;
6.6
9.8 ;
13.2 ;
16.6 ;
4 7.1
;
12 ;
12.40 ;
9.74 ;
2.7 ;
4.5 ;
6.3 ;
8.1 ;
3.7 ;
5.6 ;
7.5 ;
9.4 ;
TOTAL
NOTES:
Ry U es m a9
r�
/VOrlhslr
ed/,)?
(C
i^Nv.... .... .... ....
Nt
30" RCP
30" ROR v
.. Q
30" RCP ro
M _� ...... \ n-
AX
Q� Widen
Channel
Puget Dr.
Excelsior PI
30" RCP
North Stream Basin Plan
Recommended Improvements
Problem Nos. NS-2 and 38
SE 1 /4 SEC. 13, T. 27 N ., R.3E., W. M.
v
00,
600
BUFFER'UNE
-
�O \
BUILL`ING SETBACK
LINE
PERMISSION TU BE OB TAINED--�
�- AVOID SE TTNG PIPE CLOSE TO �•�
�6 \
00
FROM NEIGHBOR TO FILL ON \\
/ DOWNSTREAM BENDS, UNLESS
DJACENT PROPERTY.
ADDITIONAL RIP RAP IS PROVIDED
AT BEND TO PREVENT EROSION. \
�,
YI- APPROX. 20 LF-36" CULVER I
INVERT 8" BELOW CREEK BOTTOM N.
SLOPE = 0.5%, LOCATION MAY VARY
\
1�
lie
APPROX. 16"
CULVERT - /
._F-36"
_ /�
INVERT 8" BELOW CREEK
BOTTOM
SLOPE = 0.5%, LOCATION
MAY VARY
CULVERT PIPE NOTES:
1. CULVERT OPF SHA:_:_ 'i ';,MQOrH INTERIOR CORRUGATEC I'OLY'EIHYLENE
PIPE: (HANCJR Hl- Q OR ADS Ia- 12) PIPE SHALL SHE-!r4STALLED AS
RECOMMFNDED BY MANJFACTURER
2. P-!PE SHAi-L BE SF T AT A SLORF OF 0.5 PERCENT
3. TO ATTAIN � � -20 L,,)AD.NG CAPACITY, Pif,E MUST • iAVE A MiNIMIJM OF
12 iNCHi S Ui COMPACTEv COVER k TERNAT!VEL.Y, COVER MAY BE
REDUCF_D iT PIPE. .S F3R'UGLD AI iH A REJNFOHCFJ CONCR.TE SLA1i.
4. PINE �I'I; T;OPJ� FALL Hi . O:N[ W 'i I STANDARi) COUPLERS.
5. 7 H E T"uF SHALT- BF SF' ' lb 20 PERCE^:' OF ' IS i'E TI". `v BF
T i.-LE% WITI7 GRAVEL, HA OH(3 A SURF ACE ELE VATICry AT' ROx MA iE;_
A.' T;,E Ei.E VA FION OF T•;E S'RCAM BE`)
OPTIONAL HEADWALL DETAIL
BACKFILL OR GINAL CHANNEL OR
EXCAVATED AREA WIT1l ON- SITE
/ UP ;MPOR'ED MATERIAL, COMPACTED
/ r0 95% MAX. DF(,;SITY.
i
"EADWALI TO BE 1.0' MIN, TOP OF BANK
FROM PROPERTY LINE.. -.
,)F�--
� JJ
T,)--- K PLAN
NIS
- DRIVEWAY SURFACING 9" CURB
AS RLQUIRFD
N\1
6" Mlyd_ COVER (CRUSHED ROCK)
Nil
.36" 0! A
C' LVERT
SLOPE 0.5%
I FLJW_
PROFILE
N TS
\
CENTEil PIPE. IN FLCW LINE
T'(P.-BOTH ENDS; `
"OP OF BA?,K
--- ._KEY "EAD'WA._L !NT("
EX. PRANK 1.0' MIN. ( (P.)
_ AS REQIIIREF,'
X
oI
l�
UU/A 1tM T JI'ALL I It AU YV ALL
CD SLOPE 2:1 (MiN.) TYPICAL.
STEEPER SLOPES ALLOWED !F
ROCKERY- TYPE HEADWALL !S
USED. CONCRETED HFAOWA!. L MAY \ A
BE USED AT OWNER'S OPTION. 1 \
l \ / A?
O
0
n 1
1
\ 11 1
1 1
1 \
1 \
\AN,
\ �N
KEY HEADWALL INTO
EX. BANK 1.0' MIN. (TYP.)
- EX. GROUND (CI IANNEL )
--No. 4 REINF. STEEL (TYP.)
'0 18" MAX. SPACING, CENTERED
IN HEADWALL. MINIMUM CONRETE
8" 'WASHED ROCK. COVER OVER STEEL IS 2 INCHES.
TOP OF ROCK TO MATCH --j
EX. CHANNEL BOTTOM. KEY HEADWALL INTO
CHANNEL BOTTOM 1.0' MIN. (TYP.)
HEADWALL
N TS
Ft
"
� 36" DMA.
CULVER I
ill
IN.
PROCEDURE FOR WORK IN CREEK
NOTE:
THIS SURVEY DOES NOT PURPORT TO SHOW ALI.
/ EASEMENTS OF RECORD.
1. YrORK IN OR NEAR THE CREEK WILL BE CONDUCTED WITH A MINIMUM
UIS I RBANCE OF EXISTING VEGETATION. VEGE TA LION SHALL BE RESTORED
TO A CONDITION EQUIVALENT TO THAT FOUND PRIOR TO THE START OF THE
WORK,
2. THE: CREEK WILL BE TSOLATFD FROM OTHER CONSTRUCTION ACTIVITIES
(OUTSIDE THE CREEK BANKS) BY A FILTER BARRIER FENCE.
3. WORK WITHIN THE CREEK BED AND BANK AREA SHALL BE ISOLATED BY A
COFFERDAM OR COFFERDAMS, USING SANDBAGS OR ANOTHER APPROVED
ME THOU. [HE AREA INSIDE THE COFFERDAM WILL BE ONLY LARGE ENOUGH -TO
ALLOW THE REQUIRED CONSTRUCTION. STREAM FLOWS SHALL BE PUMPED OR
PIPED PAST THE ,WORK AREA UNTIL THE WORK AREA HAS BEEN STABILIZED.
4. THE AREA OF THE WORK (INSIDE THE COFFERDAM) SHALL BE PUMPED DRY
BEFORE ANY EXCAVATION IS DONE AT OR BELOW THE CREEK WATER SURFACE
ELEVATION. THE PUMP SHALL DISCHARGE TO ONSITE VEGETATION TO PROVIDE
SEDIMENT FILTERING. ADDITIONAL TREATMENT MEASURES MAY BE REQUIRED IF
S;LTY WATER IS ALLOWED TO ENTER THE CREEK.
5. ALTERNAT!VE METHODS MAY BE PROPOSED BY THE CONTRACTOR, AND WILL
BE SUBJECT TO REVIEW AND APPROVAL BY THE CITY AND THE DEPARTMENT OF
FISH AND WILDLIFE. A DESCRIPTION OF ANY PROPOSED ALTERNATIVE SHALL.
BE PROVIDED TO THE E"+GINEER.
SCALE 1"=10'
mn .
0 10
CONDITIONS OF WASHINGTON STATE DEPARTMENT OF FISH
AND WILDLIFE HYDRAULIC PROJECT APPROVAL
THE W'SDFW HAS ISSUED AN HYDRAULIC PROJECT APPROVAL,
DATED FEBRUARY 13, 1999. THE CONTRACTOR SHALL OBTAIN
A COPY OF THE HPA AND ABIDE BY THE CONDITIONS
THEREIN. THESE INCLUDE, BUT ARE NOT LIMITED TO THE
FOLLOWING:
1. TIMING LIMITATIONS: THE PROJECT SHALL BE
COMPLETED BY OCTOBER 1, 1999, WORK MAY
COMMENCE WHEN THE STREAM IS DRY OR IN A LOW -
FLOW CONDITION. IF THE STREAM IS NOT DRY OR IN A
LOW -FLOW PERIOD, WORK SHALL NOT START UNTIL LOW
FLOW OCCURS OR AFTER JUNE 1, 1999.
2. WORK SHALL BE ACCOMPLISHED PER PLANS AND
SPECIFICATIONS SUBMITTED TO THE WASHINGTON
DEPARTMENT OF FISH AND WILDLIFE, EXCEPT AS
MODIFIED BY THIS HYDRAULIC PROJECT APPROVAL.
THESE PLANS REFLECT DESIGN CRITERIA PER CHAPTER
220-110 WAC. THESE PLANS REFLECT MITIGATION
PROCEDURES TO SIGNIFICANTLY REDUCE OR ELIMINATE
IMPACTS TO FISH RESOURCES. A COPY OF THESE
PLANS SHALL BE AVAILABLE ON SITE DURING
CONSTRUCTION.
3. THE CULVERT SHALL BE PLACED ON A FLAT GRADIENT
WITH THE BOTTOM OF THE CULVERT PLACED BELOW THE
LEVEL OF THE STREAMBED A MINIMUM OF 20 PERCENT
OF THE CULVERT DIAMETER FOR ROUND CULVERT, AND
20 PERCENT OF THE CULVERT'S RISE FOR AN ELLIPTICAL
CULVERT. THE 20 PERCENT PLACEMENT BELOW THE
STREAMBED SHALL BE MEASURED AT THE CULVERT
OUTLET.
4. THE CULVERT SHALL BE INSTALLED TO MAINTAIN STRUCUTURAL
INTEGRITY FOR FLOWS UP TO THE 100-YEAR PEAK FLOW WITH
CONSIDERATION OF THE DEBRIS LIKELY TO BE
ENCOUNTERED.
5. THE CULVERT SHALL BE INSTALLED AND MAINTAINED TO
AVOID INLET SCOURING AND TO PREVENT EROSION OF
STREAM BANKS DOWNSTREAM OF THE PROJECT.
6. THE CULVERT SHAI L BE INSTALLED IN THE DRY OR IN
ISOLATION FROM THE STREAM FLOW BY THE INSTALLATION
OF A BYPASS FLUME OR CULVERT, OR BY PUMPING THE
STREAM FLOW AROUND THE WORK AREA. THE BYPASS
SHALL BE OF SUFFICIENT SIZE TO PASS ALL FLOWS AND
DEBRIS FOR THE DURATION OF THE PROJECT.
7. NEITHER CULVERT SHALL EXCEED 30 FEET IN TOTAL LENGTH,
8. DISTURBANCE OF THE STREAMBED AND BANKS SHALL
BE LIMITED TO THAT NECESSARY TO PLACE THE CULVERT
AND ANY REQUIRED CHANNEL MODIFICATION
ASSOCIATED WITH IT. AFFECTED STREAMBED AND
BANK AREAS OUTSIDE THE CULVERT AND ASSOCIATED
FILL SHALL BE RESTORED TO PRE -PROJECT CONFIGURATION
FOLLOWING INSTALLATION OF THE CULVERT.
.9. PRIOR TO RELEASING THE WATER FLOW TO THE PROJECT
AREA, ALL BANK PROTECTION OR ARMORING SHALL BE
COMPLETED.
10. EROSION CONTROL METHODS SHALL BE USED TO
PREVENT SILT -LADEN WATER FROM ENTERING THE
STREAM. THESE MAY INCLUDE, BUT ARE NOT LIMITED
TO, STRAW BALES, FILTER FABRIC, TEMPORARY SEDIMENT
PONDS, CHECK DAMS OF PEA GRAVEL -FILLED BURLAP
BAGS OR OTHER MATERIAL, AND/OR IMMEDIATE
MULCHING OF EXPOSED AREAS.
11. IF HIGH FLOW CONDITIONS THAT MAY CAUSE SILTATION
ARE ENCOUNTERED DURING THIS PROJECT, WORK SHALL
STOP UNTIL THE FLOW SUBSIDES.
12. EXTREME CARE SHALL BE TAKEN TO ENSURE THAN NO
PETROLEUM PRODUCTS, HYDRAULIC FLUID, FRESH
CEMENT, SEDIMENTS, SEDIMENT -LADEN WATER,
CI'EMICALS, OR ANY OTHER TOXIC OR DELETERIOUS
MATERIALS ARE ALLOWED TO ENTER OR LEACH INTO THE.
STREAM.
13. A COPY OF THE HPA SHALL BE KEPT ON THE SITE AT
ALL TIMES.
CULVERT PLAN
FOR
NA TA LIE SH/PPEN
IN THE SE1 /4, SEC. 13, T.27N., R.3E., W.M.
CITY OF EDMONDS
SNOHOMISH COUNTY, WASHINGTON
IIN
SE 1 /4 SEC. 13, T.27 N., R.3E., W. M.
JuLL E Wit; t-(Ave-
\
\--BL)FFER. L,NE
SFTHACK
F'E RMISSIOt.I I U HE OR TA!NtU--,
- -
AVCiI' SE TTING f' PF CLGSF TO
\ FRCM r,E,G-IRO!? '0 F,LL ON
/
/'
LOWNS?REAM BENDS, UI;t.ESS
1J_'ACF��� PROP�F rY.
Ani)�TiONA'. P,iL` P.AZ' ;S PROV�PFF)
A.-! BF�jD TO PREVENT E_P0S!C'%
\
AP,'PCJX. 20 t F-
•36" Cu' VE.R
;
. " �. •;E rr8" BELOA
CRFFK HO FTOM
SLOPEC.ST,
LCCAl10N MAY VARY �
APPROX.
16' ._G. 36' CULVERT
NVFR'
8" E�ELUN CRE VV
S OPF
- (-)S7 i Ci.A;17N btAY 'JAFY �. /
CULVERT PIPE NOTES:
1. CUt"VFR? r'li'E SEAL;- NE._;!IL?CTI1 iNTEk,OR CORRUGATED Pr,'LYEIH'(L.EPIE
PIPE. (HANCCR HI--Q OR ADS N`'2)- PIPE SF'ALL BE INSTALLED AS
RECOMMENDED BY MANUFACTUQER
2. PIPE SHALL BE `.AFT AT A St_OHt OP 0.5 PERCENT
3 TO AT'A-N 20 10ADING CAPAC,TY, P,PE MIDST rrAVE A VlN.Mt!M OE
12 INC•u S O) COM'r'-ACTED COVEi1 A, TTRNATIVELY, C')VER MAY BE
REDUCED iI• P:PF iS HR'DGED 'NiTli A. REi*04CED CONCPE.'E SLAL).
4. P PE SFc" TIUNS `,,t,ALL- 13t ,U'''�FD W:I! I STA'NDAki;
`i SHALL BF SE A�L�:J'N 20 PERCE�. JF GE.YT' TG BE
Fl,_LEt N�Tn GRAVE)_, HAOI4C <. Si;RFACE FLEVATION A'PR(_?x,MATEL (
Al TI+E Et.FVANON )I. 114E ';'"REAM BE[)
OPTIONAL HEADWALL DETAIL
h
BAi:KF LI OPiCINAL CGiANNEI_ ,P
EXCAVA'E: AREA t^JiT! -14 SiTE
/ UR M-'UR'ED MA'•E.P;AL, COMPAC'Et;
i' '0 9,)% 'VAX.
/- -jRI`JEYvAY ,.,RFAC,li''
C, ,. 1� 1 J C C VE k , ( Fr S E L', t:, _u_ k ✓
C!' LVLKT
S'.OPE = 0.5% r
PROFILE
NTS
(4 S' OFE 2.' (M,N.; IYPiCAL
RG(:KE.RY- TYT'F.
,JSFF? CONCRE TED HFAI;WAi , M/
HE USED AT OWNE'R''S CPT'!ON 11 V'-
11
� 1
C'
1
1 1
1 1
1
1 \
0
.. - _-1
_
I; j. I1 ( KEY HEADWALL INTO
E.,.. BANK. MIN. (-YP r
36" Dik
EX. GROUND 'CI IA.NNF,.)
4 REINF. STEEL (TYP
(0 18" VAX SPACING, CEN'L"EL`
j iN HEADWALL. MINIMUM CONRETE
COVER OVER STEEL IS 2 INCHES.
8" WASHED ROCK,
TOP OF POCK TO MATCI( 1.
EX. CHANNEL BOTTOM. CHANNEL
I1EAD'r4Al;_ INTO
CHANNEL BOTTOM MIN. _"'F j
HEADWALL
N TS
1
PROCEDURE FOR WORK IN CREEK
\ 00,
NOTE:
TE ITS SURVEY DOES NOT PURPORT 10 SHOW AL I
EASEMENTS OF RECORD.
CONDITIONS OF WASHINGTON STATE DEPARTMENT OF FISH
AND WILDLIFE HYDRAULIC PROJECT APPROVAL
THE WSDFW HAS ISSUED AN HYDRAULIC PROJECT APPROVAL,
DATED
f-EBRUARY 13, 1999. THE CONTRACTOR 3IIALL OBTAIN
A
COPY OF THE HPA AND ABIDE BY THE CONDITIONS
THFRFIN. THESE INCLUDE, BUT ARF NOT LIMITED TO THE
FOLLOWING:
1.
T!MiNG I.IMITATIONS: THE PROJECT SHALT. HE
COMPLETED 13Y OCTOBER 1, 1999. WORK MAY
CGMMENCE 'MEN THE STREAM iS UP'/ OP IN A LOW --
FLOW CONDITION. IF THE STREAM IS NOT DRY OR IN A
LOW -FLOW PERIOD, WORK SHALL NOT START UNTIL LOW
2.
FLOW OCCURS OR AFTER JUNE 1, 1999.
WORK, SHALL BE ACCOMPLISHED PER PLANS AND
SPECIFICATIONS SUBMITTED TO THE WASHINGTON
DEPARTMENT OF FISH AND WILDLIFF, EXCEPT AS
MODIFIED BY THIS HYDRAULIC PROJECT APPROVAL.
TLIESE PLANS REFLECT DESIGN CRITERIA PER CHAPTER
220 '1i" WAC- THESE PLANS REFLECT MITIGATION
PROCEDURES TO SIGNIFICANTLY REDUCE OR ELIMINATE
SCALE
1 =10'
IMPACTS TO F'iSH RESOURCES. A COPY OF THESE
/ 10 0 15
PLAN,-') SHALL BE AVAILAHLE ON SITE DURING
CONSTRUCTION.
I IN
/ 0 10
3.
THE CULVERT SHALL t3E PLACED ON A FLAT GRADIENT
WITH THE BOTTOM OF THE. CULVERT PLACED BELOW THE
LEVEL OF THE STREAMBED A MINIMUM OF 20 PERCENT
OF THE CULVERT DIAMETER FOR A ROUND CULVERT, AND
q )
T c
20 PERCENT OF HE CULVERT'S RISE FOR AN ELLIPTICAL
CULVERT. THE 20 PERCENT P,-A'A.MENI BELOW 111E
�o
STREAMBED SHALL BE MEASURED AT THE CULVERT
OUTLET
4.
THE CULVERT SHALL BE INSTALLED TO MAINTAIN STRUCUTURAL
IN TEGRI I Y F';R FLOWS UT' TO THE 100-YEAR PEAK FLOW W TH
CONSIDERATIOr; OF THE DEBRIS LIKELY TO BE
ENCOUNTEREC-
5,
IHL i,ULVERT SHALL BE 1N51AL1-El,i AND MAINTAINED i0
AVOID INLET SCOURING AND T'O PREVENT EROSION OF
STREAM BANKS CCWNSTREAM OF THE PROJECT.
6.
THE CULVERT SHAI L BE INSTALLED IN THE DRY OR IN
ISOLATION FROM THE STREAM FLOW BY THE INSTALLATION
OF A BYPASS FLUME OR CULVERT, OR BY PUMPING THE
STREAM FLOW AROUND THE WORK AREA. THE BYPASS
SHALL BE OF SUFFICIENT SIZE TO PASS ALL FLOWS AND
DEBRIS FOR THE DURATION OF THE PROJECT.
7.
NEITHER CULVERT SHALL EXCEED 30 FEET IN TOTAL LENGTH.
8.
DISTURBANCE OF THE STREAMEED AND BANKS SHALL
BE LIMITED TO THAT NECESSARY TO PLACE THE CULVERT
AND ANY REQUIRED CHANNEL MODIFICATION
ASSOCIATED YrIT1-t IT. AFFECTED STREAMBED AND
BANK AREAS OUTSIDE THE CULVERT AND ASSOCIATED
FILL SHALL BE RESTORED TO PRE -PROJECT CONFIGURATION
FOLLOWING INSTALLATION OF THE CULVERT.
9.
PRIOR TO RELEASING THE WATER FLOW TO THE PROJECT
AREA, ALL BANK PROTECTION OR ARMORING SHALL. BE
COMPLETED.
10.
EROSION CONTROL METHODS SHALL BE. USED TO
PREVENT SIt_T-LADEN WATER FROM ENTERING THE
STREAM. THESE MAY INCLUDE, BUT ARE NOT LIMITED
TO, STRAW BALES, FILTER FABRIC, TEMPORARY SEDIMENT
PONDS, CHECK DAMS OF PEA GRAVEL --FILLED BURLAP
BAGS OR OTHER MATERIAL, AND/OR IMMEDIATE
MULCHING OF EXPOSED AREAS,
11.
IF HIGH FLOW CONDITIONS THAT MAY CAUSE SILTATION
ARE ENCOUNTERED DURING THIS PROJECT, WORK. SHALL
STOP UNTIL THE FLOW SUBSIDES.
`.
12.
EXIREME CARE SHALL BE TAKEN TO ENSURE IHAI NO
PETROLEUM PRODUCTS, HYDRAULIC FLUID, FRESH
CEMENT, SEDIMENTS, SEDIMENT -LADEN WATER,
CI'EVICALS, OR ANY OTIIER TOXIC OR DELETERIOUS
MATERIALS ARE ALLOWED TO ENTER OR LEACH INTO THE
STREAM.
13.
A COPY OF THE HPA SHALL BE KEPT ON [HE SITE AT
ALL TIMES.
IvOPK ;N OR ^:LAR !'HE CREEK WILL BE (;ONDUCTED yWi''ra A MINIMUM
I"'`.; I ,IlBAIvCE OF EXIS 1nd, VEGE 1 A 110N. VEUL I A IION SHALL BE. DES fOilED
A CONL) ,ON QIJiVALE(�` TO THAT FCUi:J PRIOR TO .'E STAR' CF E
NI)RK
2 'HF : RE rK N;"l. BE: fS-0i ATFD FROM OTHFE% CONSTPIJCT!ON A('PV'TiES
('uEEK BANKS) BY A FILIER HARR,ER FENCE.
3. WORK W lHiN THE CREEK BED AND BANK AREA SHALL BE ISOLATED BY A
COFFERDAM OR COFFERDAMS, USING SANDBAGS OR ANOTHER APPROVED
ME'. CD. It— AREA NSsUt: THE COFFERDAM WILL BE ONLY LARGE ENOUGH TO
ALLOW THE REQUIRED CONSTRUCTION. STREAM FLOWS SHALL BE PUMPED OR
PPE -ID PAST THE WORK AREA UNPL THE WORK AREA HAS BEEN STABILIZED.
4, THE AREA OF THE WORK (INSIDE THE COFFERDAM) SHALL BE PUMPED DRY
BEFORE ANY EXCAVATION IS DONE AT OR BELOW THE CREEK 'RATER SURFACE
Et E:VA'ION. THE PUMP SHALL DISCHARGE TO ONSITE VEGETATION TO PROVIDE
SEDIMEI'JT FILTERING. ADDITIONAL TREATMENT MEASURES MAY BE REQUIRED IF
) TY WATEI? IS ALLOWED TO ENTER THE CREEK.
S. ALTERNATIVE METHODS NAY BE PROPOSED BY THE CONTRACTOR, AND 'N1LL
BF SUBJECT TO REIJIE`N AND .APPROV.AL BY THE CITY AND THE DEPARTMENT OF
F15H AND WILDLIFE A DESCRIPTION OF ANY PROPOSED ALTERNATIVE SHAL-L.
B� PROVIDED TO THE EN ;INFER.
R 1009 9
IS' L
I�1VAti' �t1281pJ�
I EXPIRES --_ 7/4/00
CULVERT PLAN
FOR
NAT,6LIE SHIPPEN
IN THE SE1 /4, SEC. 13, T.27N., R.3E., W.M.
CITY OF EDMONDS
SNOHOMISH COUNTY, WASHINGTON
AUG 111999