800 DUBUQUE AVENUE PROJECT - MMRP PAGE 1 OF 10
800 Dubuque Avenue Project Mitigation Monitoring and Reporting Program Mitigation Measure Timing/
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Implementation
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Monitoring Action Monitoring
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Completed
Air Quality
General Plan Mitigation Measure GP-MM-Air-1a: Basic
Construction Management Practices. [The project applicant / owner / sponsor] shall incorporate the following Basic Construction Mitigation Measures recommended by the Bay Area Air Quality Management District (BAAQMD):
i) All exposed surfaces (e.g., parking areas, staging areas, soil piles, graded areas, and unpaved access roads) shall be watered two times per day.
ii) All haul trucks transporting soil, sand, or other loose material off-site shall be covered.
iii) All visible mud or dirt trackout onto adjacent public roads shall be removed using wet power vacuum street sweepers at least once per day. The use of dry power sweeping is prohibited. iv) All vehicle speeds on unpaved roads shall be limited to 15 mph. v) All roadways, driveways, and sidewalks to be paved shall be completed as soon as possible. Building pads shall be laid as soon as possible after grading unless seeding or soil binders are used.
Prior to
issuance of all
grading and
construction
permits
-andDuring
grading and
construction
Applicant
Verify construction
contractors
provide
acknowledgment
of requirements
-andVerify
requirements are
met during grading
and construction
SSF Building
Division
Mitigation Measure Air-2:Reduce Diesel Particulate Matter During Construction. The project applicant / owner / sponsor shall implement a feasible plan to reduce DPM emissions by at least 50 percent such that increased cancer risk and annual PM2.5 concentrations from construction would be reduced below TAC significance levels as follows:
1. All construction equipment larger than 25 horsepower used at the site for more than two continuous days or 20 hours total shall meet U.S. EPA Tier 4 emission standards for PM (PM10 and PM2.5), if feasible, otherwise,
a. If use of Tier 4 equipment is not available, alternatively use Prior to
issuance of all
grading and
construction
permits
-andDuring
grading and
construction
Applicant
Verify construction
contractors
provide
acknowledgment
of requirements
-andVerify
requirements are
met during grading
and construction
SSF Building
Division
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equipment that meets U.S. EPA emission standards for Tier 3 engines and include particulate matter emissions control equivalent to CARB Level 3 verifiable diesel emission
control devices that altogether achieve at least a 50
percent reduction in particulate matter exhaust in
comparison to uncontrolled equipment; alternatively (or in combination).
b. Use of electrical or non-diesel fueled equipment.
2. Dewatering pumps shall be powered by electricity.
3. Use of electric portable equipment following the site preparation and grading phases.
4. Alternatively, the applicant may develop another construction operations plan demonstrating that the construction
equipment used on-site would achieve a reduction in
construction diesel particulate matter emissions by 50 percent or greater. Elements of the plan could include a combination of some of the following measures:
• Implementation of No. 1 above to use Tier 4 or
alternatively fueled equipment,
• Installation of electric power lines during early
construction phases to avoid use of diesel generators and compressors,
• Use of electrically-powered equipment,
• Forklifts and aerial lifts used for exterior and interior building construction shall be electric or propane/natural gas powered,
• Change in construction build-out plans to lengthen phases, and
• Implementation of different building techniques that
result in less diesel equipment usage.
Such a construction operations plan would be subject to review by an air quality expert and approved by the City prior to construction. 800 DUBUQUE AVENUE PROJECT - MMRP PAGE 3 OF 10
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Biological Resources
Mitigation Measure Bio-1: Pre-Construction Nesting Bird Survey.
Initiation of construction activities during the avian nesting season (February 15 through September 15) shall be avoided to the extent feasible. If construction initiation during the nesting season cannot be avoided, pre-construction surveys for nesting birds protected by the Migratory Bird Treaty Act of 1918 and/or Fish and Game Code of California within 100 feet of a development site in the project area shall be conducted within 14 days prior to initiation of construction activities. If active nests are found, a 100-foot buffer area shall be established around the nest in which no construction activity takes place. The buffer width may be modified upon recommendations of a qualified biologist regarding the appropriate buffer in consideration of species, stage of nesting, location of the nest, and type of construction activity based upon published protocols and/or guidelines from the U.S. Fish and Wildlife Service or California Department of Fish and Wildlife (USFWS, CDFW) or through consultation with USFWS and/or CDFW. The biologist may also determine that construction activities can be allowed within a buffer area with monitoring by the biologist to and stoppage of work in that area if adverse effects to the nests are observed. The buffer shall be maintained until after the nestlings have fledged and left the nest. These surveys would remain valid as long as construction activity is consistently occurring in a given area and would be completed again if there is a lapse in construction activities of more than 14 consecutive days during the nesting season.
Prior to
issuance of
grading
permit, if
during nesting
period
-andPrior to
issuance of
any
subsequent
grading or
construction
permit if
during nesting
period
Applicant
Verify completion
of survey and, if
birds present,
provision of buffer
-andConfirm no gap in
activity over 14
days or verify
updated survey
SSF
Planning
Division
Cultural and Tribal Cultural Resources
Mitigation Measure Cul-1: Cultural Resources Worker
Environmental Awareness Program (WEAP). A qualified
archaeologist shall conduct a WEAP training for all construction personnel on the project site prior to construction and groundPrior to issuance of
construction
permits
Applicant
Verify construction
contractors
provide
acknowledgment
of requirements
SSF Building
Division
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disturbing activities. The training shall include basic information about the types of paleontological, archaeological, and/or tribal artifacts and resources that might be encountered during construction activities, and procedures to follow in the event of a discovery. This training shall be provided for any personnel with the potential to be involved in activities that could disturb native soils. -andPrior to
initiation of
grading or
excavation
-andVerify
requirements are
met during
construction
Mitigation Measure Cul-2: Halt Construction Activity, Evaluate Find and Implement Mitigation. In the event that previously unidentified paleontological, archaeological, or tribal resources are uncovered during site preparation, excavation or other construction activity, the project applicant shall cease or ensure that all such activity within 25 feet of the discovery is ceased until the resources have been evaluated by a qualified professional, who shall be retained by the project applicant, and specific measures can be implemented by the project applicant to protect these resources in accordance with sections 21083.2 and 21084.1 of the California Public Resources Code.
Prior to
issuance of
grading
permits
-andDuring
grading
Applicant
Verify construction
contractors
provide
acknowledgment
of requirements
-andVerify
requirements are
met during
construction
SSF Building
Division
Mitigation Measure Cul-3: Halt Construction Activity, Evaluate Remains and Take Appropriate Action in Coordination with Native American Heritage Commission. In the event that human remains are uncovered during site preparation, excavation or other construction activity, the project applicant shall cease or ensure that all such activity within 25 feet of the discovery is ceased until the remains have been evaluated by the County Coroner, which evaluation shall be arranged by the project applicant, and appropriate action taken by the project applicant in accordance with section 7050.5 of the California Health and Safety Code or, if the remains are Native American, in coordination with the Native American Heritage Commission and in accordance with section 5097.98 of the California Public Resources Code.
Prior to
issuance of
grading
permits
-andDuring
grading
Applicant
Verify construction
contractors
provide
acknowledgment
of requirements
-andVerify
requirements are
met during
construction
SSF Building
Division
800 DUBUQUE AVENUE PROJECT - MMRP PAGE 5 OF 10
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Completed
Geology and Soils
Mitigation Measure Geo-1: Compliance with a design-level Geotechnical Investigation report prepared by a Registered Geotechnical Engineer and with Structural Design Plans as prepared by a Licensed Professional Engineer. Proper foundation engineering and construction shall be performed in accordance with the recommendations of a Registered Geotechnical Engineer and a Licensed Professional Engineer. The structural engineering design, with supporting Geotechnical Investigation, shall incorporate seismic parameters compliant with the California Building Code.
Prior to
issuance of
building
permits
Applicant
Verify construction
contractors
provide
acknowledgement
of geotechnical
recommendations
SSF Building
Division
Hazards and Hazardous Materials
Mitigation Measure Haz-1: Implement Soil Management and Health and Safety Plans. The applicant’s construction contractor shall implement soil management and health and safety plans to facilitate compliance with applicable federal, state, and local laws and regulations, applicable to earthwork activities at the site as a result of the reported petroleum hydrocarbons and volatile organic compound concentrations in the soil. These plans must be filed with the City before construction permits are granted and are anticipated to include the following components:
1. Soil Management Plan. Recent analytical results indicate that some site soils contain slightly elevated concentrations of SVOCs, VOCs, TPH, and certain metals. The soil management objectives for the site are to minimize exposure of potentially hazardous constituents in soil to construction workers, nearby residents and pedestrians, and future users of the site. A sitespecific soil management plan will be developed based on recent comprehensive subsurface investigations covering the site soils to depths exceeding planned excavations and the underlying groundwater. The soil management plan is intended to facilitate compliance with relevant federal, state, and local Prior to
issuance of
grading
permits
-andDuring
construction
Applicant
Verify construction
contractors
provide
acknowledgement
of requirements
-andVerify
requirements are
met during
construction
SSF Building
Division
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laws and regulations, applicable to earthwork activities at the site as a result of the identified contamination profiles. Some of the excavated material in the upper 5 feet may need to be disposed off-site at a Class II non-hazardous regulated landfill and/or as unrestrictive waste based on disposal facility’s acceptance criteria. The contractor will establish appropriate off-site disposal locations and direct truck loading scheduling and tracking and recording of all shipments per applicable regulations and/or stockpile locations on the site to properly segregate, cover, moisture control, and profile the excavated material. Further testing may instead determine that no special soil handling is required. Unless from a documented clean source such as a quarry, soil imported onto the site will be tested in accordance with the “Clean Imported Fill Material” information advisory developed by the California DTSC in October 2001.
2. Health and Safety Plan. The potential health risk to on-site construction workers and the public will be minimized by developing and implementing a comprehensive Health and
Safety Plan (HASP). The contractor will be responsible for developing and implementing the HASP. The HASP plan will describe the health and safety training requirements, specific personal hygiene, and monitoring equipment that will be used during construction to protect and verify the health and safety of the construction workers and the general public from exposure to constituents in the soil, which is anticipated to include the following:
• the site will be fenced;
• exposed soil at the construction site will be watered at least twice daily to prevent visible dust from migrating off-site; • stockpiles will be covered;
• water will be misted or sprayed during loading of material onto trucks for off haul;
• trucks transporting contaminated material will be covered with a tarpaulin or other cover;
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• the wheels of the trucks exiting the site will be cleaned prior to entering public streets;
• public streets will be swept daily if material is visible, excavation and loading activities will be suspended if winds exceed 15 miles per hour; and the fence will be posted with requirements of the safe drinking water and toxic
enforcement act (Proposition 65).
3. Health and Safety Officer. A site health and safety officer identified in the Health and Safety Plan will be on site at all times during excavation activities to ensure that all health and safety measures are maintained. The health and safety officer will have authority to direct and stop (if necessary) all construction activities in order to ensure compliance with the health and safety plan.
4. Dust Control. During all excavation activities, dust control measures will be implemented to reduce potential exposure.
These measures may include moisture conditioning the soil and covering exposed soil and stockpiles with weighted down plastic sheeting to prevent exposure of the soil. Dust control measures at a minimum will include:
• Covering soil stockpiles with plastic sheeting.
• Watering uncovered ground surface at the site; use of water will be limited to prevent runoff.
• Misting or spraying of soil during excavation and loading. • Emplacement of gravel and/or rubble plates on site access roads as feasible.
• Trucks hauling soil from the site will be covered.
• Visible dust will be monitored during excavation and
subsurface demolition.
• The soil drop height from an excavator’s bucket onto soil piles or into transport trucks will be minimized.
• Windbreaks will be deployed as necessary.
• If necessary, the area of excavation may be limited to reduce dust generation.
• Site vehicle speed limits.
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• Street sweeping.
• Termination of excavation if winds exceed 25 mph.
• Addition of soil stabilizers and other responses as needed.
5. Odor Control. If strong odors are noted during excavation activities, odor suppression measures will be implemented by the General Contractor to minimize odor during excavation activities.
6. Storm Water Pollution Controls. Storm water pollution controls will be implemented to minimize storm water runoff and
sediment transport from the site. A Storm Water Pollution Prevention Plan (SWPPP) will identify Best Management
Practices for activities as specified by the California Storm Water Best Management Practices Handbook (Stormwater Quality
Task Force, 1993) and/or the Manual of Standards for Erosion and Sediment Control Measures (ABAG, 1995). The SWPPP will include protocols (i.e., earth dikes and drainage swales) to control storm water contact with, or runoff from, potentially impacted soil during wet weather conditions.
7. Groundwater Management. Groundwater at the site has been encountered at depths of nine feet to fifteen feet below ground surface. Construction dewatering is anticipated based on development plans. Any construction dewatering must adhere to a discharge permit obtained from the South San Francisco Department of Public Works Water Quality Control Division, Environmental Compliance Program or the Regional Water
Quality Control Board. Based on the analytical results, the groundwater may need to be treated prior to discharge. Any proposed groundwater treatment prior to discharge will require analytical testing and approval from the appropriate regulatory agency prior to discharging.
8. Contingency Plans for Unknown/Unexpected Conditions. The following tasks shall be implemented during excavation
activities if unknown historical subsurface features and/or unanticipated hazardous materials are encountered. Such materials may include unaccounted for underground storage 800 DUBUQUE AVENUE PROJECT - MMRP PAGE 9 OF 10
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tanks (UST) and associated product lines, sumps, and/or vaults, former monitoring wells, and/or soil with significant petroleum hydrocarbon odors and/or stains.
• Stop work in the area where the suspect material is
encountered and cover with plastic sheets.
• Notify the General Contractor’s site safety officer and site superintendent.
• Review the existing health and safety plan for revisions, if necessary, and have appropriately trained personnel on-site to work with the affected materials, once directed by the General Contractor.
9. Soil and Groundwater Management Completion Report. A Soil and Groundwater Management Completion Report (SGMCR)
will be prepared that summarizes the soil and groundwater management activities and any subsequent investigative and removal activities that were completed during redevelopment.
The SGMCR will present a chronology of the construction events, a summary of analytical data, a copy of all manifests from the site, and a description of all soil and groundwater management activities at the site. The report will also contain laboratory analytical results and figures, as appropriate, to provide detail regarding the amount and type of contamination encountered (if any) during various activities. The report will also summarize any residual contaminants that were left on the site after completion of redevelopment activities and document that soil handling procedures were implemented in accordance with this mitigation measure.
Transportation
Mitigation Measure Trans-1: Demonstrate Adequate Sight
Distance at Project Driveways. The applicant shall demonstrate to the satisfaction of the City that the sight distance is adequate at both project driveways, which could include but is not limited to the following measures:
Prior to
issuance of
Certificate of
Occupancy
Applicant
Confirm
implementation or
plan for
implementation
SSF Public
Works
Department
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• Coordination with the City to decrease the speed limit on Dubuque Avenue to 25 mph.
• Coordination with the City to remove all line-of-sight obstructions (vegetation, utility poles and sign boards) to create clear sight lines within the City’s right-of-way to the south of the project site.
• Coordination with the adjacent property to the south (720 Dubuque Avenue/PG&E easement) to push back the existing metal fence on the southern boundary of the project site and remove vegetation to provide a clear zone to the south of the project’s southern driveway.