Plans (50) •
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CleanWater Services
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OCT 27 201E
October 20, 2016 l °` ' rI; t
SPL expires on October 20, 2018 BUILDINGr _
JAMES QUINN COMPANY LLC
52167 SE 8TH STREET
SCAPPOOSE OR 97056
Re: 153 ft2 addition
CWS file 14-001479 (Tax map 2S103BB Tax lot 12800)
Clean Water Services has reviewed your proposal for the above referenced
activity within the study area. Staff has conducted a review and requested
permanent disturbance within Vegetated Corridors to be calculated. Following
the review of submitted materials, it appears that approximately 153 ft2 of buffers
associated with the sensitive areas within the study area will be permanently
impacted and the project work limits is approximately 1,050 ft2 (calculation of
area within erosion control fencing).
In light of this result, the applicant shall enhance 1,356 ft2 of the on-site
vegetated corridor (1,050 ft2 as 1:1 "enhancement" equal to project area
and 306 ft2 as 2:1 mitigation for permanent impacts). Enhancement shall
consist of removing non-native plants (such as yellow flag iris and reed
canary grass) and improving the understory plant community with 50
native shrubs and groundcover plants.
This document will serve as your Service Provider letter as required by
Resolution and Order 07-20, Section 3.02.1. All required permits and approvals
must be obtained and completed under applicable local, state, and federal law.
This letter does NOT eliminate the need to protect additional Sensitive Areas and
Vegetated Corridors if they are subsequently identified on your site.
If you have any questions, please feel free to call me at (503) 681-3639.
Sincerely,
Laurie Harris
Environmental Plan Review
Attachment(1)
2550 SW Hillsboro Highway • Hillsboro,Oregon 97123
Phone: (503)681-3600 • Fax: (503)681-3603 • cleanwaterservices.org
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_..___________ 1 ' (E) STRUCTURE = 2040 SF F.(
-,-----\---A 1 HOUSE = 1577 SF 0
82.50' ,, 7 GARAGE = 453 SF ''frp
�' , SHED = 100 SF •2
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"Q , NORTH DECK = 687 SF
(E) SHED \
1 EAST DECK = 163 SF
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.,i. DRIVEWAY & WALK = 720 SF C-W5 —SILL.#.1�f'6•f •(
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• - \ 41, (E) IMPERVIOUS AREA = 3,710 SF Approved
�'' (N) ADDITION AREA = 154 SF _ Clean Water Se is r
- (N) IMPERVIOUS AREA = 3,864 tov VI �� �
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1 (N) OVERALL IMPERVIOUS % = 36.3% ���
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(E) DECK -- 7'2722 t
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21'-5" (nZ '►` EXISTING TREES
12275 SW ANN C . `"P _ti -,`I' ' ,r „
�a — -ice `� TP=(30 ) Thuja plicata Western Red Cedar
SINGLE STORY �¢ , : ,sv \ �` 1 A =(12") Alnus rubra Red Alder
SINGLE FAMILY "V+ '�
RESIDENCE , `1‘' \ , D =(3) Cornus Kousa Ornamental Dogwood
1577 SF GAR GE (E) ' , �" \ P =(5) Krauter Vesuvius" (P. cerasifera) Ornamental Plum
DECK
20'\ 24 / • ' !'' = NEW GWS-APPROVED NATIVE SHRUB REACH)
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CURB ONLY tit ' ' ' ' A ------------
�� 21.68' SW ANN CT.
62.29'
SITE PLAN FOR ADDITION
SCALE: 1"= 2O'-0"
RAPHIC SCALE
20 40 100
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