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Home My WebLink AboutPlan, Tentative APPLICANT 3/9/2021SQUIRREL ST, _ 10 f, 502.5 a ---TOW _._. m_ _ J � J �J �J 4 5 `� �J 2 TRACT $ g 3€ ' 498.44 FG 498.71 FG 498.99 FG 498.83 FG 498.93 FG �� DRAINAGE`` � �.��`�-.�.�.. 4>, OUTFALL K ' I FACILITY ��- 497.82 =a. �. '• i , 508.5 505.5 Q• �., BOW�,r ►_ .v s/a I� 513.5 �►' a� ' I 5/c TOW TOW TOW w � �--'..a_7�erV r ,.'.. ",,..,`""�M-«..,.,.w,�. ``.d.•....-x.,....•-.,.„�^---«_.,.. d^ �`\ ��,... _ �.....,.,,,°'`"'' j�ff ,%r '",orf>:� �_ . 'Y>•e tea" o �»-Y. , v� ... \\ C tF,,..1 • � mgrs r�,r�w Q-a,.P,.�„Aa amp m ° • 3/a 5/c 4 SOCK WRAPPED 3/d M° a ° PERFORATED PIPE 5!c TO OUTFALL IN 182 502.5 -.... -,50 TOW POND B 5/b 508 a 5/d 5/c Ola 5/b 5fc • • e, r d 510 5 a 1 2 PROPOSED TREE a` 498.31 WHITE OAK 514 EXTENTS OF r -arr a y I BOW 8 GEOGRID � i�. I i �b4,•rlr r l r i3 i rroy A> l .,w....«,.,^"`"'. o�c mps Kim e am/ _ ` ^sK r 0 0 cd v 0 Y 0 ED TREE 5 p; PROPS p m 22 ` > m n q a . .0 e i m ze e' s o a tr• m m` wm a o m u i a v , DOUG FIR DTR _ PROPOSED TREE PROPOSE EE amm uiuITc nnV .r rr WESTERN RED CEDAR 524 m ° °m • .- ._...'.a.. `'--_._,_ -._,,..,. �r ` `bm 6w ,, ""�„� .d •� Pik" } ...e . `,. 10.00' OFFSET - `- _ ___ ___ / \�� 526 �'a �, >� ►� S FROM GEOGRID 4 528 PROPOSED TREES ` n . 530 WESTERN RED CEDAR SOS GENERAL NOTES: 3/a EXTENTS OF �//Iw��-\ �- 11-POS12 Sp8 site one ins ection with LDAP staff is re uired. Issuance of this plan does not relieve the ermit holder and or the contractor from all other permitting requirements. Prior to GEOGRID\, 1/�� S1 1. Prior to any ground disturbance on the p q P P 5!c 0 beginning construction activities, all other necessary approvals shall be obtained. 2. The erosion and sediment control measures shown on the plan are the minimurn requirements for anticipated site conditions. During the construction period, these measures shall be upgraded as needed for unexpected storm events and to ensure that sediment and sediment --laden water does not leave the site. 3. The implementation of the SSCP and the construction, maintenance, replacement, and upgrading of the erosion and sediment control measures is the responsibility of the permit holder and or the contractor until all construction is completed and accepted and vegetation / landscaping is established. 4. The boundaries of the clearing IIsi#s shown on this plan shall be clearly flaggedin the field by the engineer prior to construction. During the construction period, no disturbance beyond the flagged clearing limits shall be permitted. The flagging shall be maintained by the permit holder and or the contractor for the duration of construction. 5. The erosion and sediment control measures on active sites shall be inspected and maintained daily and within the 24 hours after any storm event of greater than 0.5 inches of rain per 24 hour period. Measures shall be inspected by the permit holder and or the contractor after each rainfall and at least daily during prolonged rainfall. Any required repairs or adjustments shall be made immediately. The erosion and sediment control measures on inactive sites shall be inspected a minimum of once every two (2) weeks or within 48 hours following a storm event. 6. All erosion and sediment control measures shall be protected from damage at all times. Control measures shall remain in place until permanent re -vegetation has been stabilized. Any measure that is damaged or destroyed shall be repaired or replaced immediately. 7. Any areas of exposed soils, including roadway embankments, that will not be disturbed for two days during the wet season (October 1 to April 30) or seven days during the dry season (May 1 to September 30) shall be immediately stabilized with an approved ESC method (seeding & mulching with straw, bark, compost, or plastic covering, ect.). 8. Street sweeping shall be performed as needed or when directed by the City inspector to insure public right-ofways are kept clean and free of debris. Street flushing is prohibited. 9. When trucking saturated soils from the site, either water -tight trucks shall be used or loads shall be drained on site until dripping has been reduced to no more than one gallon per hour. Sediment laden water will not be allowed to enter the storm water system 10. Extracted ground water from excavated trenches shall be disposed of in a suitable manner without damage to adjacent property, City's storm water system, water features, and related natural resources. Approval of a dewatering system does not guarantee that it will meet compliance or be acceptable for use in all situations. Modifications to the dewatering system will be required if compliance can not be met. At no time will sediment laden water be allowed to leave the construction site. 11. A supply of materials necessary to meet compliance and implement the LDAP or other best management erosion practices under all weather conditions shall be maintained at all times on the construction site. 12. No hazardous substances, such as paints, thinners, fuels and other chemicals shall be released onto the site, adjacent properties, or into water features, the City's storm water system, or related natural resources. 13. The ESC facilities shall be inspected daily by the contractor and maintained to ensure continued proper functioning. Written records shall be kept of weekly reviews of the ESC facilities during the wet season (October 1 to April 30) and of monthly reviews during the dry season (May1 to September 30). 14. the wet season (October 1 to April 30) or seven days during the dry season (May 1 to September 30) shall be immediately stabilized with an approved ESC method (seeding & mulching with straw, bark, compost, or plastic covering, ect.). 15. Street sweeping shall be performed as needed or when directed by the City inspector to insure public right-ofways are kept clean and free of debris. Street flushing is prohibited. 16. When trucking saturated soils from the site, either water -tight trucks shall be used or loads shall be drained on site until dripping has been reduced to no more than one gallon per hour. Sediment laden water will not be allowed to enter the storm water system 17. Extracted ground water from excavated trenches shall be disposed of in a suitable manner without damage to adjacent property, City's storm water system, water features, and related natural resources. Approval of a dewatering system does not guarantee that it will meet compliance or be acceptable for use in all situations. Modifications to the dewatering system will be required if compliance can not be met. At no time will sediment laden water be allowed to leave the construction site. 18. A supply of materials necessary to meet compliance and implement the LDAP or other best management erosion practices under all weather conditions shall be maintained at all times on the construction site. 19. No hazardous substances, such as paints, thinners, fuels and other chemicals shall be released onto the site, adjacent properties, or into water features, the City's storm water system, or related natural resources. 20. The ESC facilities shall be inspected daily by the contractor and maintained to ensure continued proper functioning. Written records shall be kept of weekly reviews of the ESC facilities during the wet season (October 1 to April 30) and of monthly reviews during the dry season (May1 to September 30). EXPOSED SLOPE PROPOSED TREE AREA WESTERN RED CEDAR TREE REMOVAL LEGEND: TREES TO REMOVEUNDER ORIGINAL PERMIT ADDITIONAL TREES REMOVED ON 10-17-20 FOR WALL CONSTRUCTION. 33, 41, 44, 51, 52, 53, 57, 61, 65, 66 & 67. SEE EXISTING TREE LIST FOR SIZE AND SPECIES. 0 PROPOSED TREES TREES TO BE WESTERN RED CEDAR PLANTED IN LOCATIONS SHOWN ON PLAN. O CONSTRUCTION NOTES 182. HYDROSEED ENBANKMENT WITH SUNMARK TURFWORX RECOVERY BLEND WITH SLOPEMASTER TACKIFIER (OR EQUIVALENT). EMBANKMENT NOTES 1. CONTOURS SHOWN IN EXCAVATION AREA BEHIND WALL ARE PROPOSED FINISH ELEVATIONS. 2. MAX SLOPE OF EMBANKMENT BEHIND RETAINING WALL 2:1 MINIMUM PER GEOTECHNICAL DESIGN DOCUMENTS. 3. GEO-GRID IS PLACED IN EMBANKMENT AREA WHICH PREVENTS PLANTING OF NEW TREES. SEE GEOTECH DESIGN DOCUMENTS FOR GEO-GRID PLACEMENT SPECIFICATIONS. 4. PERFORATED PIPE TO BE PLACED BEHIND WALL PER GEOTECH DESIGN SPECIFICATIONS. ROUTED TO OUTLET INTO DETENTION POND LOCATED IN TRACT B. LANDSCAPE NOTE 1. NO TREES TO BE PLANTED IN AREA WITH GEOGRID. TREES SHALL BE MINIMUM 10' SETBACK FROM GEOGRID PER GEOTECHNICAL ENGINEER OF RECORD OF RETAINING WALL (K & A ENGINEERING). . i EXTENTS OF GEOGRID PROPOSED TREE WESTERN RED CEDAR PLANT LIST I SYMBOL COMMON NAME BOTANICAL NAME SIZE O SHRUBS a Oceanspray Holodiscus discolor 3 gal b Pacific N'rnebark Physocarpus capitatus 3 gal c Oregon Grape Mahonia aquifolium 3 gal d Red Flowering Currant Ribes sanguineunn 3 gal NOTES SCALE 1 "20' ° `=µii■■ _ . °�� `.�� _ 1. PLANT PROPOSED SHRUBS A MINIMUM OF 4' FROM BACK OF EXISTING RETAINING WALL. 2. BEFORE PLANTING VERIFY THAT SOIL DEPTH 4' FROM BACK OF WALL IS A MINIMUM OF 2' DEEP TO EXISTING GEO GRID. SHEET EC - 1.0 10 0 O rz)) E -I o r- r O 44 H O . CJ 5 b / � WWW/ Q yW� 0 70=04 CY p 00 w H Con SHEET EC - 1.0 10 0 O rz)) N 23 p •� N •i SHEET EC - 1.0 10 0 s •i � SHEET EC - 1.0