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Home My WebLink AboutMINUTES - 05022006 - C.27 TO: BOARD OF SUPERVISORS ' Contra FROM: MAURICE M. SHIU, PUBLIC WORKS DIRECTOR Costa DATE: May 2 2006 County Bra co xrs SUBJECT: DETERMINE that the Bollinger Canyon Road Culvert Repair project is a California Environmental Quality Act(CEQA),Class 2(c)Categorical Exemption;APPROVE the project and AUTHORIZE the Public Works Director, or designee, to advertise the project, San Ramon area. (District III) [CDD-CP# 06-03] Project No. 0672-6U2533. SPECIFIC REQUEST(S)OR RECOMMENDATION(S)&BACKGROUND AND JUSTIFICATION RECOMMENDED ACTION: DETERMINE that the Bollinger Canyon Road Culvert Repair is a California Environmental Quality Act(CEQA), Class 2 (c) Categorical Exemption, and DIRECT the Director of Community Development to file a Notice of Exemption with the County Clerk, and AUTHORIZE the Public Works Director to arrange for payment of a $25 fee to Community Development for processing, and a $25 fee to the County Clerk for filing the Notice of Exemption, and APPROVE the project and AUTHORIZE the Public Works Director, or designee, to advertise the project. Continued on Attachment: ® SIGNATURE: Q RECOMMENDATION OF COUNTY ADMINISTRATOR ❑ RECOMMENDATION OF BOARD COMMITTEE E PPROVE OTHER SICNATURE(S): ,(/f ACTION OF BO ON / 4X% caA APPROVED AS COMMEN OTHER ❑ J VOT F SUPERVISORS UNANIMOUS(ABSENT ®Y,4,/ ) I hereby certify that this is a true and correct copy of an action AYES: NOES: taken and entered on the minutes of the Board of Supervisors on ABSENT: ABSTAIN: the date shown. ATTESTED: / / � ei � JOHN CULLEN, Clerk-4/the Board of Supervisors and County Administrator CVCJ:ms G:\GipData\EngSvc\ENV IRO\TransEng\BollingerCanyonRoad\CEQA\BO(04-03-06).doc Orig.Div:Public Works(Environmental Section) By _ — ,Deputy Contact: Colleen Culver-Jaffe,(313-2236) �— cc: Administrator—Attn.E.Kuevor ' Auditor-Controller Community Development—Hiliana Li Public Works: Maint—A.Knapp Maint—R.Urbina t i F SUBJECT: DETERMINE that the Bollinger Canyon Road Culvert Repair project is a California Environmental Quality Act(CEQA), Class 2(c)Categorical Exemption;APPROVE the project and AUTHORIZE the Public Works Director,!or designee, to advertise the project, San Ramon area. (District Ill) [CDD-CP# 06-031 Project No. 0672-6U2533. DATE: May 2, 2006 PAGE: 2 of 2 FISCAL IMPACT: The project will not impact County General Funds.It will cost approximately$50,000,which will come from Road funds. REASONS FOR RECOMMENDATIONS AND BACKGROUND: The purpose of the project is to repair the failing culvert within Contra Costa County right-of-way Bollinger Canyon Road crosses Bollinger Creek. The existing 192"corrugated metal pipe (CMP) culvert has experienced extensive corrosion of the metal at the bottom of the pipe, and the lateral loads on the pipe have pushed the sides inward, destroying the structural integrity of the pipe. Continued deterioration of the pipe could cause serious damage to the pipe and the road. Additionally,the soil behind the rock armoring adjacent to the downstream end of the CMP has experienced extensive erosion. Bollinger Canyon Road is an important arterial route for local residents to the Danville/San Ramon area. The project will include cutting out the rusted metal bottom of the corrugated metal pipe and rebuilding the flow line of the culvert with concrete and rebar, repairing erosion to the slope adjacent to the downstream end of the culvert by placing additional rock and backfilling the voids around and behind the rock armoring with concrete, and installing cut-off walls at each end of the culvert to prevent future scour erosion.No concrete will be allowed to enter the active stream. The project will not result in the removal of any scenic resource. CONSEQUENCES OF NEGATIVE ACTION: Failure to approve the CEQA document will delay the needed repairs and may allow additional damage to occur to the County road facilities. i I I i CONTRA PU13LIlC WORKS DEPARTMENT COSTA ; INITIAL STUDY COUNTY OF ENVIRONMENTAL SIGNIFICANCE PROJECT # 0672-6U-2533 CP# 06-03 PROJECT NAME: Bollinger Canyon Road Culvert Repair PREPARED BY: Collee�nCuCulvveer/Jaaffe DATE: February 23, 2006 APPROVED BY: /� C ` L DATE: 3�ZZ�Oh RECOMMENDATIONS: ( ✓) Categorical Exemption (Class 2(c)) Negative Declaration ( ) Environmental Impact Report Required ( ) Conditional Negative Declaration The project will not have a significant effect on the environment. The recommendation is based on the following: The proposed project consists of the replacement or reconstruction of existing structures or facilities in the same location and with the same purpose and capacity as the facility replaced or reconstructed involving negligible expansion of capacity. The project will not result in the removal of any scenic resource. What changes to the project would mitigate the identified impacts? N/A USGS Quad Sheet Diablo Base Map Sheet Parcel # N/A GENERAL CONSIDERATIONS: 1. Location: Central County in the unincorporated San Ramon area. (Figures 1-2). 2. Project Description: The project is located where Bollinger Canyon Road crosses Bollinger Creek, approximately 0.8 miles north of the intersection of Bollinger Canyon Road and Crow Canyon Road, near San Ramon.The purpose of the project is to repair the failing culvert within Contra Costa County right-of-way. The existing 192"corrugated metal pipe (CMP) culvert has experienced extensive corrosion of the metal at the bottom of the pipe, and the lateral loads on the pipe have pushed the sides inward, destroying the structural integrity of the pipe. Continued deterioration of the pipe could cause serious damage to the pipe and the road. Additionally the soil behind the rock armoring adjacent to the downstream end of the CMP has experienced extensive erosion. Bollinger Canyon Road is an important arterial route for the local residents to the Danville/San Ramon area. The project will include cutting out the rusted metal bottom of the corrugated metal pipe and rebuilding the flow line of the culvert with concrete and rebar, repairing erosion to the slope adjacent to the downstream end of the culvert by placing additional rock and backfilling the voids around and behind the rock armoring with concrete, and installing cut-off walls at each end of the culvert to prevent future scour erosion. No concrete will be allowed to enter the active stream. Construction will occur during the dry season, however, Bollinger Creek will have flowing water during the time of construction. In order to facilitate construction, dewatering will be necessary. Normal flows will be maintained downstream of the project site at all times. Environmentally Sensitive Area (ESA)fencing will be installed to clearly define the project limits and impact area. No impact beyond the ESA fencing will be allowed. Operation of equipment within the channel will be kept to the minimum amount possible. At the upstream end of the culvert it is expected that equipment will be lowered into the streambed by way of a boom to minimize impact to the surrounding area. The downstream end of the culvert will be accessed utilizing a low-impact construction 'vehicle (which moves on articulated legs rather than wheels ortracks)to minimize the impact on the surrounding area.As many as four trees under 14"dbh may need to be removed, however, the project area is densely vegetated and removal of these trees is not expected to alter the GAGrpData\EngSvc\ENVIRO\TransEng\BoIling erCanyonRoad\CEQA\IS(02-22-06).doc i scenic quality of the surrounding a iea. Although red-legged frogs (RLF) have not been observed in the project site (the nearest sighting is 0.5 miles away), it does contain potential habitat for RLF, therefore Department staff will coordinate with staff from the U.S. Fish and Wildlife Service when applying for authorization under the U.S. Army Corps Nationwide Permit Program to ensure the species is adequately protected. The Department will implement several avoidance and minimization measures, including conducting a preconstruction survey and contracting with a qualified biologist to monitor habitat disturbance. In order to minimize impacts to surrounding environmentally sensitive areas,the project has been designed to include several Best Management Practices (BMP's): 1. Permanent BMPs for long-term erosion prevention and sediment control will be implemented, including minimizing the amount of disturbed area, preserving existing vegetation to the maximum extent possible. 2. Daily trash removal from the site to ensure the area is maintained in a clean condition. 3. Fueling and maintenance of:equipment at designated areas outside the"creek channel. 4. Following completion of the project; all disturbed slopes will be seeded with a mix including native grasses prior to winter rains. It is anticipated that Bollinger Canyon Road will remain open to traffic during construction, however, temporary lane closures may be necessary to facilitate construction. At least one lane will remain open during construction, and emergency vehicle access will be maintained at all times. Tree branches and shrubbery may need trimming throughout the project. In order to minimize damage to trees, any roots exposed during excavation will be cut cleanly. Temporary construction easements will be needed from adjacent land owners for the duration of construction.Additional Real Property transactions,including right- of-way acquisition may be necessary in support of this project. Utility relocations may be necessary in support of the project. 3. Does it appear that any feature of the project will generate significant public concern? [] yes [X] no [] maybe (Nature of concern): 4. Will the project require approval or permits by other than a County agency? [X ] yes [] no Agency Name(s) • US Army Corps of Engineers - Nationwide Permit, • Regional Water Quality Control Board, -Water Quality Certification • California Department of Fii sh and Game— Streambed Alteration Agreement 5. Is the project within the Sphere of Influence of any city? Yes. San Ramon I i I i G:\GrpData\EngSvc\ENVI RO\TransEng\Bol ling erCanyonRoad\CEQA\IS(02-22-06).doc ZQ N 9J J �,r t t j'f-,a'-'.•_""'' \� ^tom. _N to - l � rpt. «.-�}�"7'{}"'T^^r•��) CC � � / s'- 1117, 1-., ^ nt J In CV ca �\ S._-\ Fk e dy r� f. 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"t dd3-""'�ait.�� y,��tt fJ'^��.,��-la �*�'�'+ycJlsy��w*'��;��d��d1,5-.,5�• P. �' t .tr"; j�' ' '�` ✓!IR.,""4Ft t� t !� Y.y�YY Ys9�Y' �� 't�T��,P�` � +r ""'. to P � .�"'�`' �+'3 Y�✓.y/ _#4Jxq ,' Sa'�patS� �'S�� n� 3s r'�- 'r, '>�'�4 �✓ 9r (f` �X �fk64fi'aP°i� { 4 `�f5 �y��' �j- .,,.rr+ s" }a.- z. �•� • �i }'..1x3.+,q a'•ry ✓ .3 r. d.'�..h ly ,;fir a t ylte t�4'td Aw i a r�K x3 'fi�4Ot i}��'3'M15 rlsia, �+ yU�a+.,"�+\ � 't'Sw. � s .`y`'4 i',',. � • � 5 ��a's " r ��`�J� {�;'}� c� � +�� $}� «+� F=S� d `$ ..aFP � • • a 6�r� ��•l� f'*�.'1.. S�.m'�� 15�,Fj Ff� tY�t`i�� ,�3 r F •Y �. Jr 4 y 3 .. CALIFORNIA ENVIRONMENTAL QUALITY ACT Notice of Exemption Contra Costa County Community Development Department 651 Pine Street, 4th Floor -North Wing, McBrien Administration Building Martinez, CA 94553-0095 Telephone: (925) 313-2296 Contact Person: Cece Sellgren - Public Works Dept. Project Description, Common Name (if any) and Location: Bollinger Canyon Road Culvert Repair Project, County File#CP 06-03. Project Description: The purpose of the project is to repair the failing culvert within Contra Costa County right-of-way. The existing 192" corrugated metal pipe (CMP) culvert has experienced extensive corrosion of the metal at the bottom of the pipe, and the lateral loads on the pipe have pushed the sides inward, destroying the structural integrity of the pipe. Continued deterioration of the pipe could cause serious damage to the pipe and the road. Additionally the soil behind the rock armoring adjacent to the downstream end of the CMP has experienced extensive erosion. Bollinger Canyon Road is an important arterial route for the local residents to the Danville/San Ramon area. The project will include cutting out the rusted metal bottom of the corrugated metal pipe and rebuilding the flow line of the culvert with concrete and rebar, repairing erosion to the slope adjacent to the downstream end of the culvert by placing additional rock and backfilling the voids around and behind the rock armoring with concrete, and installing cut-off walls at each end of the culvert to prevent future scour erosion. No concrete will be allowed to enter the active stream. Construction will occur during the dry season, however, Bollinger Creek will have flowing water during the time of construction. In order to facilitate construction,dewatering will be necessary. Normal flows will be maintained downstream of the project site at all times. Environmentally Sensitive Area (ESA)fencing will be installed to clearly define the project limits and impact area. No impact beyond the ESA fencing will be allowed. Operation of equipment within the channel will be kept to the minimum amount possible. At the upstream end of the culvert it is expected that equipment will be lowered into the streambed byway of a boom to minimize impact to the surrounding area.The downstream end of the culvert will be accessed utilizing a low-impact construction vehicle. As many as four trees under 14"dbh may need to be removed, however, the project area is densely vegetated and removal of these trees is not expected to alter the scenic quality of the surrounding area. Although red-legged frogs (RLF)have not been observed in the project site(the nearest sighting is 0.5 miles away), it does contain potential habitat for RLF, therefore Department staff will coordinate with staff from the U.S. Fish and Wildlife Service when applying for authorization under the U.S. Army Corps Nationwide Permit Program to ensure the species is adequately protected.The Department will implement several avoidance and minimization measures, including conducting a preconstruction survey and contracting with a qualified biologist to monitor habitat disturbance. In order to minimize impacts to surrounding environmentally sensitive areas, the project has been designed to include several Best Management Practices (BMPs). Additional BMPs include installation of an upstream cofferdam and downstream cofferdam will enable a bypass system to be constructed; ensuring that no sediment is transported downstream as a result of the project. It is anticipated that Bollinger Canyon Road will remain open to traffic during construction,however,temporary lane closures may be necessary to facilitate construction.At least one lane will remain open during construction,and emergency vehicle access will be maintained at all times. Tree branches and shrubbery may need trimming throughout the project. In order to minimize damage to trees, any roots exposed during excavation will be cut cleanly. Temporary construction easements will be needed from adjacent land owners for the duration of construction. Additional Real Property transactions, including right-of-way acquisition may be necessary in support of this project. Utility relocations may be necessary in support of the project. This project is exempt from CEQA as a: Ministerial Project (Sec. 15268) _ Other Statutory Exemption, Section Declared Emergency(Sec. 15269(a)) _ General Rule of Applicability (Section 15061(b)(3) Emergency Project (Sec. 15269(b) or (c)) X Categorical Exemption, (Sec.15304) Class 2c For the following reason(s): The proposed project consists of the replacement or reconstruction of existing structures or facilities in the same location and with the same purpose and capacity as the facility replaced or reconstructed involving negligible expansion of capacity. The project will not result in the removal of any scenic resource. Date: By: Community Development Department Representative AFFIDAVIT OF FILING AND POSTING I declare that on I received and posted this notice as required by California Public Resources Code Section 21152(c). Said notice will remain posted for 30 days from the filing date. Signature Title Applicant: County Public Works Department 255 Glacier Drive Martinez, CA 94553 County Clerk Fee$50 Due CALIFORNIA ENVIRONMENTAL QUALITY ACT Notice of Exemption Contra Costa County Community Development Department 651 Pine Street, 4th Floor -North Wing, McBrien Administration Building Martinez, CA 94553-0095 Telephone: (925) 313-2296 Contact Person: Cece Sellgren - Public Works Dept, Project Description, Common Name (if any) and Location: Bollinger Canyon Road Culvert Repair Project, County File#CP 06-03. Project Description: The purpose of the project is to repair the failing culvert within Contra Costa County right-of-way. The existing 192" corrugated metal pipe (CMP) culvert has experienced extensive corrosion of the metal at the bottom of the pipe, and the lateral loads on the pipe have pushed the sides inward, destroying the structural integrity of the pipe. Continued deterioration of the pipe could cause serious damage to the pipe and the road. Additionally the soil behind the rock armoring adjacent to the downstream end of the CMP has experienced extensive erosion. Bollinger Canyon Road is an important arterial route for the local residents to the Danville/San Ramon area. The project will include cutting out the rusted metal bottom of the corrugated metal pipe and rebuilding the flow line of the culvert with concrete and rebar, repairing erosion to the slope adjacent to the downstream end of the culvert by placing additional rock and backfilling the voids around and behind the rock armoring with concrete, and installing cut-off walls at each end of the culvert to prevent future scour erosion. No concrete will be allowed to enter the active stream. Construction will occur during the dry season, however, Bollinger Creek will have flowing water during the time of construction. In order to facilitate construction,dewatering will be necessary. Normal flows will be maintained downstream of the project site at all times. Environmentally Sensitive Area (ESA)fencing will be installed to clearly define the project limits and impact area. No impact beyond the ESA fencing will be allowed. Operation of equipment within the channel will be kept to the minimum amount possible. At the upstream end of the culvert it is expected that equipment will be lowered into the streambed byway of a boom to minimize impact to the surrounding area.The downstream end of the culvert will be accessed utilizing a low-impact construction vehicle. As many as four trees under 14"dbh may need to be removed, however, the project area is densely vegetated and removal of these trees is not expected to alter the scenic quality of the surrounding area. Although red-legged frogs (RLF)have not been observed in the project site(the nearest sighting is 0.5 miles away), it does contain potential habitat for RLF, therefore Department staff will coordinate with staff from the U.S. Fish and Wildlife Service when applying for authorization under the U.S. Army Corps Nationwide Permit Program to ensure the species is adequately protected. The Department will implement several avoidance and minimization measures, including conducting a preconstruction survey and contracting with a qualified biologist to monitor habitat disturbance. In order to minimize impacts to surrounding environmentally sensitive areas, the project has been designed to include several Best Management Practices (BMPs). Additional BMPs include installation of an upstream cofferdam and downstream cofferdam will enable a bypass system to be constructed; ensuring that no sediment is transported downstream as a result of the project. It is anticipated that Bollinger Canyon Road will remain open to traffic during construction,however,temporary lane closures may be necessary to facilitate construction.At least one lane will remain open during construction,and emergency vehicle access will be maintained at all times. Tree branches and shrubbery may need trimming throughout the project. In order to minimize damage to trees, any roots exposed during excavation will be cut cleanly. Temporary construction easements will be needed from adjacent land owners for the duration of construction. Additional Real Property transactions, including right-of-way acquisition may be necessary in support of this project. Utility relocations may be necessary in support of the project. This project is exempt from CEQA as a: — Ministerial Project (Sec. 15268) _ Other Statutory Exemption, Section — Declared Emergency(Sec. 15269(a)) _ General Rule of Applicability (Section 15061(b)(3) Emergency Project (Sec. 15269(b) or (c)) X Categorical Exemption, (Sec.15304) Class 2c For the following reason(s): The proposed project consists of the replacement or reconstruction of existing structures or facilities in the same location and with the same purpose and capacity as the facility replaced or reconstructed involving negligible expansion of capacity. The project will not result in the removal of any scenic resource. Date: By: Community Development Department Representative AFFIDAVIT OF FILING AND POSTING I declare that on I received and posted this notice as required by California Public Resources Code Section 21152(c). Said notice will remain.posted for 30 days from the filing date. Signature Title Applicant: County Public Works Department 255 Glacier Drive Martinez, CA 94553 County Clerk Fee,$50 Due This Initial Study addresses potential environmental impacts associated with operation of the project. 3. Does it appear that any feature of the project will generate significant public concern? [ ] yes [✓ ] no [ ] maybe (Nature of concern): 4. Will the project require approval or permits by other than a County agency? [X] yes [ ] no SF Region Regional Water Quality Control Board, U.S. Army Corps of Engineers, CA Dept. of Fish and Game 5. Is the project within the Sphere of Influence of any city? Yes, City of Pleasant Hill and City of Concord. G:\Grpbata\EngSvc\ENVIRO\Flood Control\LowerWC_GRAYDesilt\CEQA\Initial Study Cover.doc Page 2 of 2 CONTRA PUBLIC WORKS DEPARTMENT COSTA INITIAL STUDY COUNTY OF,ENVIRONMENTAL SIGNIFICANCE PROJECT WO# 9353 CP# 05-30 PROJECT NAME: Lower Walnut Creek and Lower Grayson. Creek Floodplain Restoration and De-silting Project PREPARED BY: Carrie Dovzak DATE: February 9, 2006 APPROVED BY: ='! r DATE: J RECOMMENDATIONS: O Categorical Exemption (Class ) O Negative Declaration ( ) Environment Impact Report Required (X) Mitigated Negative Declaration I The project will not have a significant effect on the environment. The recommendation is based on the following: There is no substantial evidence that the project or any of its aspects may cause a significant effect on the environment (Sec. 15063(b)(2)). What changes to the project would mitigate the identified impacts. N/A USGS Quad Sheet Walnut Creek Base Map Sheet # G-13, 14; H-13,14; J-13,14 Parcel # n/a i GENERAL CONSIDERATIONS: i 1. Location: This de-silting and floodplain restoration project is located along the lower reaches of two flood control channels - Walnut Creek and Grayson Creek, in north-central Contra Costa County. The project limits are: Walnut Creek - from approximately Concord Blvd. to Drop Structure 1 (1/2 mile upstream of Willow Pass Road), and Grayson Creek from 1-680 to Chipancingo Pwy. (Figures 1, 2). 2. Project Description: Lower Walnut Creek and Lower Grayson Creek Floodplain Restoration and De-silting Project consists of sediment removal in the lower reaches of the Lower Walnut Creek and Lower Grayson Creek flood control channels, to restore the appropriate level of flood protection, and to restore the elevation of the floodplain to a more appropriate level for the stream channel to utilize it during high flow. The project will involve excavation almost exclusively with only minor amounts of temporary fill to facilitate access to the channel flood plain bench. G:\GrpData\EngSvc\ENVIRO\Flood Control\LowerWC_GRAYDesilt\CEQA\Initial Study Cover.doc Page 1 of 2 .SUBJECT: ADOPT the Lower Walnut Creek and Lower Grayson Creek Floodplain Restoration and De-Silting Project Mitigated Negative Declaration and Mitigation Monitoring Program in compliance with the California Environmental Quality Act; APPROVE the project and AUTHORIZE the Chief Engineer, Flood Control and Water Conservation District, or designee, to advertise the project, Concord area. (District IV)[CDD-CP#05-30] Project No.7520 6139353 and 7520-6139354 DATE: May 2, 2006 PAGE: 2 of 2 RECOMMENDED ACTION (continued): AUTHORIZE the Chief Engineer to arrange for payment of a$25 fee to Community Development for processing, and a$25 fee to the County Clerk for filing the Notice of Determination, and DIRECT the Chief Engineer to arrange for the $1,250 Fish and Game filing fee to be transferred to the County Clerk, and APPROVE the Lower Walnut Creek and Lower Grayson Creek Floodplain Restoration and De-Silting Project project, and AUTHORIZE the Chief Engineer to advertise the projects. FISCAL IMPACT: The project will not impact County General Funds.The estimated project cost is$1.7 million,and will be funded by Flood Control Zone 3B (100%). REASONS FOR RECOMMENDATIONS AND BACKGROUND: The project consists of sediment removal in the lower reaches of the Lower Walnut Creek and Lower Grayson Creek flood control channels where excess sediment has been deposited by flood events,and storage capacity in the channel has been compromised. The excavation will increase the level of flood protection within the channel by restoring the elevation of the floodplain to a more appropriate level to accommodate high flows. The project will involve excavation almost exclusively,with only minor amounts of temporary fill used to build access ramps into the channel flood plain bench. The project has been determined to be in compliance with the General Plan. A Mitigated Negative Declaration of environmental significance pertaining to this project was published on 3/23/06. The Board has considered the Mitigated Negative Declaration together with all comments received during the public review period. CONSEQUENCES OF NEGATIVE ACTION: Delay in approving the project will result in a delay of design and construction.