East Lathrop Storm Drain Master. Plan
document consisting of an updatedland use map and:. a policy document of goals, policies, and actions to guidefuture development activities and City actions on a citywide basis. No specific development projects were proposed as part of the General Plan Update itself. The Program EIR. analyzed the potentially significant environmental impacts associated with adoption and implementation of the General,. Plan across the full range. of CEQA topics, and the City adopted findings, a statement of overriding considerations, and a mitigation monitoring and reporting program in connection with its certification.
Because the General Plan Update established the land use framework and buildout assumptions for.. the City - including the eastern ( Historic Lathrop) portion of the City that is the focus of the SWMP the public facilities and infrastructure needed to serve planned growth, includingstorm' drainage conveyance,. detention, and pumping facilities, were within the scope of the impacts: analyzed in the certified EIR.
APPROVALS
As part of the Original Project, the City undertook the following actions:
Certified the City of Lathrop General Plan Update EIR ( SCH # 2021100139); Adopted CEQA Findings of Fact and a Statement of Overriding Considerations; Adopted the Mitigation Monitoring and Reporting Program for the project; and Adopted the City of Lathrop General Plan
3. PROPOSED: PROJECT
The proposed Project is the adoption and implementation of the East .Lathrop Stormwater Master Plan. The SWMP updates the City' sstormwater planning for the East ( Historic) Lathrop area for the first time since the draft 2006 Master Plan. It develops an updated hydrologic and hydraulic model of the existing stormwater system, evaluates existing and future system performance, and recommends a prioritized set of operational : adjustments, maintenance projects, arid capital improvement projects ( CIPs) to reduce flood risk and support responsible growth and infill redevelopment. The specific objectives of the Plan are to:
Update.
Develop an updated XPSWMM hydrologic and hydraulic model reflecting current infrastructure, land use, and topographic conditions;
Evaluate existing system performance and identify areas where capacity is limited or flooding occurs;
Assess future system needs under projected growth and full buildout conditions. consistent with the City' s General Plan land use; and
Provide a prioritized Capital Improvement Program to guide investments in detention, pumping, and conveyance facilities.
4 ' Addendum to the City of Lathrop General Plan EIR
East Lathrop Storm Drain Master Plan.
STUDY AREA
The study area is located within the City in San Joaquin County, California, along Interstate 5 just north of the Interstate 5 / Highway 120 interchange, with Stockton to the north and Manteca to the east. Thearea of focus encompasses the eastern portion of the City, generally defined as east of Interstate 5, south of Saint Andrew Street, west of the Union Pacific Railroad, and north of Louise Avenue. This area — known as East Lathrop or Historic Lathrop —is primarily urbanized with a mix of residential, commercial, and industrial land uses. The study area also includes two adjacent reference areas evaluated to understand potential hydraulic interactions: the Stonebridge area north of St. Andrew Street) and the Mossdale M- 2 area ( west of Interstate 5). The total area is approximately 1, 300 acres, of which the East Lathrop area is approximately 835 acres.
EXISTING STORMWATER SYSTEM.
The City' s stormwater system in the East Lathrop area conveys runoff through a network of approximately 21 detention and retention basins and 15 lift, surge, and pump stations, ultimately discharging to the San. Joaquin River through the San Joaquin River Storm Water. Pump Station. The collection system includes both gravity mains andforce mains. The Lift, surge, and pump stations range in capacity from small 3. 5 -horsepower units to 50 -horsepower pumps, and are monitored and controlled through the City' ssupervisory control and dataacquisition ( SCADA) system.. The Plan documents areas of chronic, nuisance flooding identified. by City operations staff, including locations along O Street; Fifth and Seventh Streets, South:. Harlan Road, and areas near Camish Pond and Woodfield Pond, and uses this information together with the updated model to develop and prioritize proposed. solutions..
PROPOSED SOLUTIONS
The SWMP prioritizes low- cost solutions where feasibleand: maximizes useof existing infrastructure.
Proposed solutionswere located and conceptually sized using City operations staff experience and the City' s 2024 Storm Drainage Standards, and are organized into three categories: operational adjustments, maintenance projects, and capital improvement projects.
OPERATIONAL ADJUSTMENTS
Operational adjustments consistof modifications to pump set points that make more efficient use of the system' sexisting capacity and can be implemented by City operations staff at their discretion as routine operations and maintenance activities. Proposed adjustments include modifying the set points at the Woodfield, Horizon Park, Libby Lane, J Street, and New Harlan storm water lift stations to retain flows in, or shift flows toward, basins withavailable capacity ( for example, Woodfield Pond, Horizon Park Pond, Libby Lane Pond, Charmaine Basin, and New Harlan Road Basin)
MAINTENANCE PROJECTS
Maintenance projects derive from the condition assessment completed for selected storm drains and consist primarily of cleaning, root removal, and spot repair or lining intended to extend the Addendum to the City of Lathrop General Plan EIR
East Lathrop Storm Drain Master Plan
design life of the system. Most of these projects can be completed by the City' s operations and maintenance staff, with a limited number of higher -priority lining or replacement projects ( for example, along pipe segments L12SDMAGV31 and M11SDMAGV325) recommended for programmatic rehabilitation in the near term through the Capital Improvement Program.
CAPITAL IMPROVEMENT PROJECTS
The SWMP recommends the following seven capital improvement projects to reduce chronic flooding and address end -of -useful - life concerns in the East Lathrop area. Planning -level construction cost estimates are summarized in Table 1.
Table 1. Recommended East Lathrop SWMP Capital Improvement Projects Project Description Planning - Level
Construction Cost
Project 1 Lathrop Road, Avon Avenue, and Shilling Avenue relief storm drains ( 15- inch, 12 -inch, and 12 -inch relief pipes) to redirect flows from the at - capacity system serving the Avon Avenue / Reverend Maurice Cotton Drive / Shilling Avenue / Woodfield Pond area into portions of the system with excess capacity.
1, 775, 800
Project 2a Expansion of the pond on the parcel near the skatepark to a total of
2. 64 acre- feet of storage, with associated park improvements, to manage and retain flows from the Fifth, Sixth, and Seventh Street area. 6, 195, 700
Project 2b Roadside swales and driveway culverts in the Fifth, Sixth, and Seventh Street areas, discharging to O Street Pond or the expanded skateparkparcel pond; implementable block -by -block as funding allows. 9, 692, 800
Project 3 Camish Pond relief: a 15 -inch pipe connecting Camish Pond to Charmaine Pond to utilize available capacity in Charmaine Pond and reduce chronic flooding on Ryhiner Lane.
856, 100
Project 4 Reconstruction of the South Harlan Road storm pipe, upsized to 48- inch, discharging to the New Harlan Basin to relieve chronic flooding without adverse downstream impacts.
7, 887, 200
Project 5 Decommissioning of the aging San Joaquin River Storm Water Pump Station and diversion of flows to the Mossdale M- 2 Storm Water Pump Station, including a new drop -structure manhole with energy dissipation.
330, 20
Project 6 Replacement of the pump at the N Street Surge Station with a new 15- horsepower pump to convey flows into N Street Basin and relieve pressure on Thomsen Pond.
331, 500
Total 27, 069, 300
Note: Planning -level construction costs are approximate and drawn from the East Lathrop Stormwater Master Plan ( Carollo Engineers, June 2026, Public Administrative Draft). Total may not equal the sum of components due to rounding. Source:
East Lathrop Stormwater Master Plan, Chapter 7.
6 Addendum to the City of Lathrop General Plan EIR
East Lathrop Storm Drain Master Plan .
Together with the operational adjustments and maintenance projects, these CIPs constitute the physical improvements contemplated by the proposed Project. The improvements are located within the already -urbanized East Lathrop study area, generally within existing rights -of -way, existing City -owned parcels and detention basin sites, or areas planned for redevelopment consistent with the land use designations analyzed in the certified General Plan Update EIR.
APPROVALS SOUGHT
In connection with the proposed Project, the City anticipates taking the following discretionary action:
Adoption of the East Lathrop Stormwater Master Plan.
Individual capital improvement projects identified in the SWMP will be subject to the City' sstandard project -level design, permitting, and CEQA compliance review as they are advanced for implementation.
4. ENVIRONMENTAL ANALYSIS
This section evaluates the proposed Project —adoption and implementation of the East Lathrop Stormwater Master Plan —against the environmental impact conclusions reached in the certified City of Lathrop General Plan Update EIR (SCH # 2021100139). For each impact, the analysis considers whether the proposed Project would result in a new significant effect not identified in the certified EIR, a substantial increase in the severity of an effect identified in the certified EIR, or any other condition described in CEQA Guidelines Section 15162 that would require preparation of a subsequent EIR.
The certified EIR is a program EIR that analyzed buildout of the City, including the storm drainage conveyance, detention, and pumping facilities needed to serve planned growth. The proposed Project consists of localized drainage improvements within the already - urbanized East Lathrop area —generally within existing rights -of -way, existing City -owned parcels and detention basin sites, or areas planned for redevelopment consistent with the land use designations analyzed in the certified EIR— together with operational adjustments and maintenance activities. The proposed Project does not modify the City' sland use map, increase planned densities or intensities, or induce growth beyond that analyzed in the certified EIR. Construction - related effects of the proposed Project would be temporary and localized and are within the scope of, and not greater than, the construction effects contemplated in the program - level analysis. Individual capital improvement projects will remain subject to project -level environmental review as they are advanced for implementation.
As a program EIR, the certified EIR minimized impacts through General Plan goals, policies, and actions rather than through discrete project -level mitigation measures. Accordingly, the certified EIR did not identify any impacts as less than significant with mitigation; impacts were identified as less than significant, less than cumulatively considerable, or significant and unavoidable. Each category is addressed below.
Addendum to the City of Lathrop General Plan EIR
East Lathrop Storm Drain Master Plan
ANALYSIS OF IMPACTS FOUND TO BE LESS THAN SIGNIFICANT
Specific impacts within the following categories of environmental effects were found to be less than significant, as set forth in more detail in the certified EIR. Following each category is a conclusion on whether the proposed Project changes the impact conclusion reached in the certified EIR.
Aesthetics and Visual Resources: The following specific impacts were found to be less than significant: 3. 1-, 3.1-2, 3. 1-, and 3. 1-4.
o The proposed Project would not result in a new significant effect, or a substantial increase in the severity of any effect analyzed in the certified EIR, and does not change the less -than -significant conclusion reached in the certified EIR.
Agricultural and Forest Resources: The following specific impacts were found to be less than significant: 3. 2-and 3. 2-4.
o The proposed Project would not result in a new significant effect, or a substantial increase in the severity of any effect analyzed in the certified EIR, and does not change the less -than -significant conclusion reached in the certified EIR.
Air Quality: The following specific impact was found to be less than significant: 3.- o The proposed Project would not result in a new significant effect, or a substantial increase in the severity of any effect analyzed in the certified EIR, and does not change the less -than -significant conclusion reached in the certified EIR.
Biological Resources: The following specific impacts were found to be less than significant: 3. 4- 1, 3. 4-2, 3. 4-, 3. 4-, 3. 4-5, and 3. 4-6.
o The proposed Project' s improvements are located primarily within the already - urbanized East Lathrop area and existing detention basin sites; ground -disturbing work and any activity near the San Joaquin River or drainage features would remain subject to applicable General Plan policies and resource - agency permitting. The proposed Project would not result in a new significant effect, or a substantial increase in the severity of any effect analyzed in the certified EIR, and does not change the less -than - significant conclusion reached in the certified EIR.
Cultural Resources: The following specific impacts were found to be less than significant: 3.5-1,
3. 5-2, and 3. 5-
o The proposed Project would not result in a new significant effect, or a substantial increase in the severity of any effect analyzed in the certified EIR, and does not change the less -than -significant conclusion reached in the certified EIR.
Geology, Soils, and Minerals: The following specific impacts were found to be less than significant: 3. 6-1, 3. 6-2, 3. 6-, 3. 6-4, 3. 6-5, and 3. 6-. 8 Addendum to the City of Lathrop General Plan EIR
East Lathrop Storm Drain Master Plan
o The proposed Project would not result in a new significant effect, or a substantial increase in the severity of any effect analyzed in the certified EIR, and does not change the less -than -significant conclusion reached in the certified EIR.
Greenhouse Gases and Climate Change: The following specific impact was found to be less than significant: 3. 7-2.
o The proposed Project would not result in a new significant effect, or a substantial increase in the severity of any effect analyzed in the certified EIR, and does not change the less -than -significant conclusion reached in the certified EIR.
Hazards: The following specific impacts were found to be less than significant: 3.8-1, 3. 8-2, 3. 8- 3, 3. 8-4, 3. 8-5, and 3. 8-6.
o The proposed Project would not result in a new significant effect, or a substantial increase in the severity of any effect analyzed in the certified EIR, and does not change the less -than -significant conclusion reached in the certified EIR.
Hydrology and Water Quality: The following specific impacts were found to be less than significant: 3. 9-1, 3.9-2, 3. 9-, and 3. 9-4.
o The proposed Project is intended to reduce chronic, localized flooding and improve management of stormwater within the East Lathrop area, consistent with the drainage - related conclusions of the certified EIR; it would not alter regional drainage patterns in a manner that increases erosion, siltation, or flooding beyond that analyzed. The proposed Project would not result in a new significant effect, or a substantial increase in the severity of any effect analyzed in the certified EIR, and does not change the less - than -significant conclusion reached in the certified EIR.
Land Use and Population: The following specific impacts were found to be less than significant:
3. 10-, 3. 10- 2, 3. 10-, and 3. 10- 4.
o The proposed Project would not result in a new significant effect, or a substantial increase in the severity of any effect analyzed in the certified EIR, and does not change the less -than - significant conclusion reached in the certified EIR.
Noise: The following specific impacts were found to be less than significant: 3. 12- 2, 3. 12-, 3. 12- 4, 3. 12- 5, and 3. 12- 6.
o The proposed Project would not result in a new significant effect, or a substantial increase in the severity of any effect analyzed in the certified EIR, and does not change the less -than -significant conclusion reached in the certified EIR.
Public Services and Recreation: The following specific impacts were found to be less than significant: 3. 13- and 3. 13- 2.
Addendum to the City of Lathrop General Plan EIR
East Lathrop Storm Drain Master Plan
o The proposed Project would not result in a new significant effect, or a substantial increase in the severity of any effect analyzed in the certified EIR, and does not change the less -than -significant conclusion reached in the certified EIR.
Utilities and Service Systems: The following specific impacts were found to be less than significant: 3. 15- 2, 3. 15-, 3. 15- 4, 3. 15- 5, and 3. 15- 6, including Impact 3. 15- 5concerning the construction or relocation of storm water drainage facilities. o The proposed Project provides the type of storm water drainage improvements contemplated to serve the buildout analyzed in the certified EIR and does not require new or expanded water or wastewater treatment facilities. The proposed Project would not result in a new significant effect, or a substantial increase in the severity of any effect analyzed in the certified EIR, and does not change the less - than -significant conclusion reached in the certified EIR.
Wildfire: The following specific impact was found to have no impact: 3. 16-. o The proposed Project would not result in a new significant effect, or a substantial increase in the severity of any effect analyzed in the certified EIR, and does not change the less -than -significant conclusion reached in the certified EIR.
ANALYSIS OF. IMPACTS FOUND TO BE LESS THAN CUMULATIVELY
CONSIDERABLE
Specific impacts within the following categories of environmental effects were found to result in a less than cumulatively considerable contribution, as set forth in more detail in the certified EIR.
Following each category is a conclusion on whether the proposed Project changes the impact conclusion reached in the certified EIR.
Aesthetics and Visual Resources: The following specific impact was found to be less than - cumulatively considerable: 4. 1.
o The proposed Project would not result in a new significant cumulative effect, or a substantial increase in the severity of any cumulative effect analyzed in the certified EIR, and does not change the less -than -cumulatively - considerable conclusion reached in the certified EIR.
Biological Resources: The following specific impact was found to be less than cumulatively considerable: 4.
o The proposed Project would not result in a new significant cumulative effect, or a substantial increase in the severity of any cumulative effect analyzed in the certified EIR, and does not change the less - than -cumulatively - considerable conclusion reached in the certified EIR.
10 Addendum to the City of Lathrop General Plan EIR
East Lathrop Storm Drain Master Plan
Cultural Resources: The following specific impact was found to be less than cumulatively considerable: 4. 5.
o The proposed Project would not result in a new significant cumulative effect, or a substantial increase in the severity of any cumulative effect analyzed in the certified EIR, and does not change the less -than -cumulatively - considerable conclusion reached in the certified EIR.
Geology and Soils: The following specific impact was found to be less than cumulatively considerable: 4. 6.
o The proposed Project would not result in a new significant cumulative effect, or a substantial increase in the severity of any cumulative effect analyzed in the certified EIR, and does not change the less -than -cumulatively -considerable conclusion reached in the certified EIR.
Hazards and Hazardous Materials: The following specific impact was found to be less than cumulatively considerable: 4. 8.
o The proposed Project would not result in a new significant cumulative effect, or a substantial increase in the severity of any cumulative effect analyzed in the certified EIR, and does not change the less -than -cumulatively - considerable conclusion reached in the certified EIR.
Hydrology and Water Quality: The following specific impact was found to be less than cumulatively considerable: 4.9.
o The proposed Project would not result in a new significant cumulative effect, or a substantial increase in the severity of any cumulative effect analyzed in the certified EIR, and does not change the less -than -cumulatively - considerable conclusion reached in the certified EIR.
Land Use, Population, and Housing: The following specific impact was found to be less than cumulatively considerable: 4. 10.
o The proposed Project would not result in a new significant cumulative effect, or a substantial increase in the severity of any cumulative effect analyzed in the certified EIR, and does not change the less -than -cumulatively - considerable conclusion reached in the certified EIR.
Public Services and Recreation: The following specific impact was found to be less than cumulatively considerable: 4. 13.
o The proposed Project would not result in a new significant cumulative effect, or a substantial increase in the severity of any cumulative effect analyzed in the certified EIR, Addendum to the City of Lathrop General Plan EIR 1 11
East Lathrop Storm Drain Master Plan
and does not change the less -than - cumulatively - considerable conclusion reached in the certified EIR.
Wildfire: The following specific impact was found to be less than cumulatively considerable:
4. 16.
o The proposed Project would not result in a new significant cumulative effect, or a substantial increase in the severity of any cumulative effect analyzed in the certified EIR, and does not change the less -than -cumulatively - considerable conclusion reached in the certified EIR.
IMPACTS FOUND TO BE SIGNIFICANT AND UNAVOIDABLE
The certified EIR identified a number of project -level and cumulative impacts that would remain significant and unavoidable following implementation of all feasible General Plan goals, policies, and actions. Because no feasible mitigation was available to reduce these impacts to a less -than - significant level, the City adopted CEQA Findings of Fact and a Statement of Overriding Considerations upon certification of the EIR. As identified in the certified EIR, these significant and unavoidable impacts are driven by citywide land use buildout rather than by the provision of storm drainage infrastructure. The proposed Project does not change the land use assumptions analyzed in the certified EIR and does not induce growth; its physical effects are limited to temporary, localized construction associated with drainage improvements in the already -urbanized East Lathrop area. The project -level significant and unavoidable impacts are addressed below.
Agricultural and Forest Resources: The following specific impacts were found to be significant and unavoidable: 3.2-1 (conversion of farmland) and 3. 2- (conflict with agricultural zoning or a Williamson Act contract).
o The proposed Project' simprovements are located within the already -urbanized East Lathrop area and would not convert farmland or conflict with agricultural zoning or Williamson Act lands. The proposed Project would not increase the severity of this significant and unavoidable impact beyond the. level analyzed in the certified EIR, would not result in a new significant effect, and does not constitute new information of substantial importance under CEQA Guidelines Section 15162. The Statement of Overriding Considerations adopted by the City upon certification of the EIR continues to apply.
Air Quality: The following specific impacts were found to be significant and unavoidable: 3.-1 conflict with the applicable air quality plan or cumulatively considerable increase in criteria pollutants) and 3.-2 (exposure of sensitive receptors to substantial pollutant concentrations).
o The proposed Project would generate only temporary, localized construction emissions subject to San Joaquin Valley Air Pollution Control District rules and applicable General Plan policies, and would not add a new operational source of criteria pollutants. The 12 Addendum to the City of Lathrop General Plan EIR
East Lathrop Storm Drain Master Plan
proposed Project would not increase the severity of this significant and unavoidable impact beyond the level analyzed in the certified EIR, would not result in a new significant effect, and does not constitute new information of substantial importance under CEQA Guidelines Section 15162. The Statement of Overriding Considerations adopted by the City upon certification of the EIR continues to apply.
Greenhouse Gases and Climate Change: The following specific impact was found to be significant and unavoidable,: 3. 7-1 (generation of GHG emissions and/ or conflict with an applicable GHG- reduction plan).
o The proposed Project would generate only minor, temporary construction - related GHG emissions and would not induce growth or increase long- term operational emissions beyond those analyzed in the certified EIR. The proposed Project would not increase the severity of this significant and unavoidable impact beyond the level analyzed in the certified EIR, would not result in a new significant effect, and does not constitute new information of substantial importance under CEQA Guidelines Section 15162. The Statement of Overriding Considerations adopted by the City upon certification of the EIR continues to apply.
Mineral Resources: The following specific impacts were found to be significant and unavoidable:
3. 11- (loss of a known mineral resource of regional or statewide value) and 3. 11- 2 (loss of a locally -important mineral resource recovery site).
o The proposed Project is located within the already -urbanized East Lathrop area and would not preclude recovery of mineral resources beyond the urbanization already analyzed in the certified EIR. The proposed Project would not increase the severity of this significant and unavoidable impact beyond the level analyzed in the certified EIR, would not result in a new significant effect, and does not constitute new information of substantial importance under CEQA Guidelines Section 15162. The Statement of Overriding Considerations adopted by the City upon certification of the EIR continues to apply.
Noise: The following specific impact was found to be significant and unavoidable: 3. 12- exposure to significant traffic noise sources).
o The proposed Project would not increase vehicular traffic or add a permanent traffic - noise source; construction noise would be temporary and subject to applicable General Plan policies. The proposed Project would not increase the severity of this significant and unavoidable impact beyond the level analyzed in the certified EIR, would not result in a new significant effect, and does not constitute new information of substantial importance under CEQA Guidelines Section 15162. The Statement of Overriding Considerations adopted by the City upon certification of the EIR continues to apply.
Transportation and Circulation: The following specific impacts were found to be significant and unavoidable: 3. 14- (vehicle miles traveled), 3. 14- 2 (conflict with a circulation program, Addendum to the City of Lathrop General Plan EIR 13
East Lathrop Storm Drain Master Plan
plan, policy, or ordinance), and 3. 14- (hazards due to a design feature, incompatible use, or inadequate emergency access).
o The proposed Project would not change land use or employment and would not generate new vehicle miles traveled; any construction traffic would be temporary and localized. The proposed Project would not increase the severity of this significant and unavoidable impact beyond the level analyzed in the certified EIR, would not result in a new significant effect, and does not constitute new information of substantial importance under CEQA Guidelines Section 15162. The Statement of Overriding Considerations adopted by the City upon certification of the EIR continues to apply.
Utilities and Service Systems: The following specific impact was found to be significant and unavoidable: 3. 15- (insufficient water supplies during normal, dry, and multiple dry years). o The proposed Project is a storm water plan that would not increase potable water demand and therefore has no bearing on the water - supply deficiency identified in the certified EIR. The proposed Project would not increase the severity of this significant and unavoidable impact beyond the level analyzed in the certified EIR, would not result in a new significant effect, and does not constitute new information of substantial importance under CEQA Guidelines Section 15162. The Statement of Overriding Considerations adopted by the City upon certification of the EIR continues to apply.
CUMULATIVE IMPACTS FOUND TO BE SIGNIFICANT AND UNAVOIDABLE The certified EIR also identified the following cumulative impacts as significant and unavoidable, for which the City' sStatement of Overriding Considerations applies. As with the project -level impacts above, these cumulative impacts are associated with citywide land use buildout rather than with storm drainage infrastructure.
Agricultural Resources: Cumulative impact 4. 2 was found to be significant and unavoidable. o The proposed Project would not increase the severity of this significant and unavoidable impact beyond the level analyzed in the certified EIR, would not result in a new significant effect, and does not constitute new information of substantial importance under CEQA Guidelines Section 15162. The Statement of Overriding Considerations adopted by the City upon certification of the EIR continues to apply.
Air Quality: Cumulative impact 4. 3 was found to be significant and unavoidable. o The proposed Project would not increase the severity of this significant and unavoidable impact beyond the level analyzed in the certified EIR, would not result in a new significant effect, and does not constitute new information of substantial importance under CEQA Guidelines Section 15162. The Statement of Overriding Considerations adopted by the City upon certification of the EIR continues to apply. 14 Addendum to the City of Lathrop General Plan EIR
East Lathrop Storm Drain Master Plan
Greenhouse Gases, Climate Change, and Energy: Cumulative impact 4. 7 was found to be significant and unavoidable.
o The proposed Project would not increase the severity of this significant and unavoidable impact beyond the level analyzed in the certified EIR, would not result in a new significant effect, and does not constitute new information of substantial importance under CEQA Guidelines Section 15162. The Statement of Overriding Considerations adopted by the City upon certification of the EIR continues to apply.
Mineral Resources: Cumulative impact 4. 11 was found to be significant and unavoidable. o The proposed Project would not increase the severity of this significant and unavoidable impact beyond the level analyzed in the certified EIR, would not result in a new significant effect, and does not constitute new information of substantial importance under CEQA Guidelines Section 15162. The Statement of Overriding Considerations adopted by the City upon certification of the EIR continues to apply.
Noise: Cumulative impact 4. 12 was found to be significant and unavoidable. o The proposed Project would not increase the severity of this significant and unavoidable impact beyond the level analyzed in the certified EIR, would not result in a new significant effect, and does not constitute new information of substantial importance under CEQA Guidelines Section 15162. The Statement of Overriding Considerations adopted by the City upon certification of the EIR continues to apply.
Transportation Network: Cumulative impact 4. 14 was found to be significant and unavoidable. o The proposed Project would not increase the severity of this significant and unavoidable impact beyond the level analyzed in the . certified EIR, would not result in a new significant effect, and does not constitute new information of substantial importance under CEQA Guidelines Section 15162. The Statement of Overriding Considerations adopted by the City upon certification of the EIR continues to apply.
Utilities: Cumulative impact 4. 15 was found to be significant and unavoidable. o The proposed Project would not increase the severity of this significant and unavoidable impact beyond the level analyzed in the certified EIR, would not result in a new significant effect, and does not constitute new information of substantial importance under CEQA Guidelines Section 15162. The Statement of Overriding Considerations adopted by the City upon certification of the EIR continues to apply.
Significant Irreversible Effects: Impact 4. 17 (irreversible and adverse effects) was found to be significant and unavoidable.
o The proposed Project would not increase the severity of this significant and unavoidable impact beyond the level analyzed in the certified EIR, would not result in a new significant effect, and does not constitute new information of substantial importance Addendum to the City of Lathrop General Plan EIR 15
East Lathrop Storm Drain Master Plan
under CEQA Guidelines Section 15162. The Statement of Overriding Considerations adopted by the City upon certification of the EIR continues to apply.
In summary, the proposed Project would not result in any new significant environmental effect, would not substantially increase the severity of any effect analyzed in the certified EIR, and would not otherwise meet any of the conditions in CEQA Guidelines Section 15162 that would require preparation of a subsequent EIR. Consistent with CEQA Guidelines Section 15164, this Addendum is the appropriate CEQA document for the City' s adoption and implementation of the East Lathrop Stormwater Master Plan.
16 j Addendum to the City of Lathrop General Plan EIR