Attachment C-1: Informational Memo
Attachment C-2: Mitigation Monitoring and Reporting Program Attachment C-3: County Notice of Intent Filing
FINAL MEMO AND RESPONSE TO COMMENTS
ATTACHMENT D
PUBLIC WORKS DEPARTMENT
Chad Mosley, Director
CITY HALL
10300 TORRE AVENUE ~ CUPERTINO, CA 95014-3266
(408) 777-3354 ~ FAX (408) 777-3333
Mitigated Negative Declaration
As provided by the Environmental Assessment Procedure adopted by the City Council of the City of Cupertino on May 27, 1973, and amended on March 4, 1974, January 17, 1977, May 1, 1978, and July 7, 1980, the City of Cupertino City Council has reviewed the proposed project described below to determine whether it could have a signific ant effect on the environment as a result of project implementation. “Significant effect on the environment” means a substantial, or potentially substantial, adverse change in any of the physical conditions within the area affect by the project including land, air, water, minerals, flora, fauna, ambient noise, and objects of historic or aesthetic significance (CEQA Guidelines Section 15382).
Project: Lawrence-Mitty Park and Trail Project
Lead Agency/ Project Proponent: City of Cupertino
Availability of Documents: The Initial Study for this Mitigated Negative Declaration is available for review at:
Cupertino City Hall
10300 Torre Avenue
Cupertino, CA 95014
Contact: Susan Michael, CIP Manager
City of Cupertino Public Works Department
10300 Torre Avenue
Cupertino, CA 95014
Phone: (408) 777-3354 (Public Works)
[email protected]
PROJECT DESCRIPTION
The project consists of the development of a new pu blic park and extension of the existing Saratoga Creek Trail on an approximately 7.8-acre site, located along the west side of Lawrence Expressway, south of Interstate 280 and adjacent to Saratoga Creek in the City of Cupertino.
PROPOSED FINDINGS
The City of Cupertino has reviewed the attached Initial Study and determined that the Initial Study identifies potentially significant project effects, but:
1. Revisions to the project plans incorporated here in as mitigation would avoid or mitigate the effects to a point where no significant effects would occur; and
2. There is no substantial evidence, in light of th e whole record before the agency, that the project may have a significant effect on the enviro nment. Pursuant to California Environmental Quality Act (CEQA) Guidelines Section s 15064(f)(3) and 15070(b), a Mitigated Negative Declaration has been prepared fo r consideration as the appropriate CEQA document for the project.
BASIS OF FINDINGS
Based on the environmental evaluation presented in the attached Initial Study, the project would not cause significant adverse effects related to aesthetics, agricultural and forestry resources, air quality, energy, geology/soils, greenhouse gas emis sions, hazards/hazardous materials, land use/planning, mineral resources, noise, population/ housing, public services, recreation, transportation, utilities/service systems, and wildfire. The project does not have impacts that are individually limited, but cumulatively considerable.
The environmental evaluation has determined that the project would have potentially significant impacts on biological, cultural and tribal cultural resources as described below.
Mitigation Measures
The project could result in significant adverse effects to biological resources, cultural resources, and tribal cultural resources. However, the project has been revised to include the mitigation measures listed below, which reduce these impacts t o a less-than-significant level. With implementation of these mitigation measures, the pr oject would not substantially degrade the quality of the environment, reduce the habitat of a fish or wildlife species, cause a fish or wildlife population to drop below self-sustaining levels, threaten to eliminate a plant or animal community, or substantially reduce the number or restrict the range of a rare or endangered plant or animal.
Nor would the project cause substantial adverse effects on humans, either directly or indirectly.
Mitigation Measures Incorporated into the Project:
Mitigation Measure BIO-1a. Conduct Preconstruction Survey. No more than 24 hours prior to the date of initial ground disturba nce, a pre-construction survey for southwestern pond turtle will be conducted within the impact area by a qualified biologist. The survey will consist of walking the limits of impact to ascertain the possible presence of the species. The qualified biologist w ill investigate all potential areas that could be used by southwestern pond turtle for feed ing, sheltering, movement, and other essential behaviors.
A qualified biologist is an individual who shall h ave a degree in biological sciences or related resource management with a minimum of two seasonal years post-degree experience conducting surveys for each amphibian a nd reptile special-status species that may be present within the project areas. Duri ng or following academic training, the qualified biologist shall have achieved a high lev el of professional experience and knowledge in biological sciences and special-statu s species identification, ecology, and habitat requirements. Additionally, the qualified biologist must be permitted or authorized to handle and relocate southwestern pond turtle.
Mitigation Measure BIO-1b. Worker Environmental Aw areness Program. All construction personnel will participate in a worke r environmental awareness program.
These personnel will be informed about the possibl e presence of all special-status species and habitats associated with the species i dentified here to be potentially present in the parcel and that unlawful take of the animal or destruction of its habitat is a violation of law. Prior to construction activities, a qualif ied biologist will instruct all construction personnel about (1) the description and status of the species; (2) the importance of their associated habitats; (3) a list of measures being taken to reduce impacts on these species during project construction and implementa tion; and (4) measures to be followed if special-status species are encountered during c onstruction activities. A fact sheet conveying this information will be prepared for di stribution to the construction crew and anyone else who enters the project site.
Mitigation Measure BIO-1c. Install Wildlife Exclus ion Barrier. Prior to any ground disturbance in the work area, a temporary wildlife exclusion barrier will be installed along the limits of disturbance. A qualified biologist w ill inspect the area prior to installation of the barrier. The barrier will be designed to allow the southwestern pond turtles to leave the work area and prevent them from entering the w ork area. The fence will remain in place until all development activities have been c ompleted. This barrier will be inspected daily and maintained and repaired as necessary to ensure that it is functional and is not a hazard to southwestern pond turtles on the outer side of the barrier.
Mitigation Measure BIO-1d. Construction Monitoring. A qualified biologist or biological monitor will be onsite during all project activities that may result in the take of any special- status species. The qualified biologist will be given the authority to freely communicate verbally, by telephone, by electronic mail, or in w riting at any time with construction personnel, any other person(s) at the project site or otherwise associated with the project, and regulatory agencies (e.g., USFWS or CDFW). The qualified biologist or biological monitor will have oversight over implementation of all the mitigation measures and will have the authority and responsibility to stop project activities if they determine any of the measures are not being fulfilled.
A biological monitor is an individual who shall ha ve academic and professional experience in biological sciences and related reso urce management activities as it pertains to this project, experience with construc tion-level biological monitoring, be able to recognize species that may be present within th e project area and be familiar with the habits and behavior of those species.
Mitigation Measure BIO-2a: Pre-Construction Survey for San Francisco Dusky- Footed Woodrats. Within 30 days prior to the start of construction a ctivities, a qualified biologist shall map all San Francisco dusky-footed woodrat houses within a 50-foot buffer around the project footprint. Environmental ly sensitive habitat fencing shall be placed to protect the houses with a minimum 50-foo t buffer. If a 50-foot buffer is not feasible, a smaller buffer may be allowable based on advice from a qualified biologist with knowledge of woodrat ecology and behavior, or Mitigation Measure BIO-2b may be implemented.
Mitigation Measure BIO-2b: Relocation of Woodrat H ouses. In the unlikely event that one or more woodrat houses are determined to be pr esent and physical disturbance or destruction of the houses cannot be avoided, then the woodrats shall be evicted from their houses and the nest material relocated outsi de of the disturbance area, prior to onset of activities that would disturb the house, to avoid injury or mortality of the woodrats. The reproductive season for San Francisc o dusky-footed woodrats typically starts in February or March and breeding activity usually continues to July but can extend into September. Thus, relocation efforts sh ould be completed in the fall to minimize the potential for impacts on young woodra ts in the house. Additionally, it is recommended that the period between the completion of the relocation efforts and the start of construction activities be minimized to r educe the potential for woodrats to reconstruct houses in the project footprint prior to the start of construction activities.
Relocation generally involves first choosing an alt ernate location for the house material based on the following criteria: 1) proximity to current nest location; 2) safe buffer distance from planned work; 3) availability of food resource s; and 4) availability of cover. An alternate house structure will then be built at the chosen location. Subsequently, during the evening hours (i.e., within 1 hour prior to sun set), a qualified biologist will slowly dismantle the existing woodrat house to allow any w oodrats to flee and seek cover. All sticks from the nest will be collected and spread o ver the alternate structure. However, alternative relocation measures can be employed as advised by a qualified wildlife biologist in consultation with CDFW.
Mitigation Measure BIO-3a: Pre-Construction Survey for Roosting Bats. A survey of culverts within the project site, including a 50-foot buffer (as feasible) shall be conducted by a qualified bat biologist no less than 30 days b efore the start of construction-related activities (including but not limited to mobilizati on and staging, clearing, grubbing, tree removal, vegetation removal, fence installation, demolition, and grading). If construction activities are delayed by more than 30 days, an additional bat survey shall be performed.
The survey may be conducted at any time of year but should be conducted in such a way to allow sufficient time to determine if special-status bats or maternity colonies are present on the site. The results of the survey shall be documented.
If no habitat or signs of bats are detected during the habitat suitability survey, no further surveys are warranted. If suitable habitat is prese nt and signs of bat occupancy (e.g., guano pellets or urine staining) are detected, Mitigation Measure BIO-3b shall apply.
Mitigation Measure BIO-3b: Acoustic Survey. If suitable habitat is present and signs of bat occupancy are detected, a follow-up dusk emerge nce survey shall be conducted no less than 30 days prior to construction activities. A dusk survey will determine the number of bats present and will also include the use of ac oustic equipment to determine the species of bats present. The results of the survey shall be documented. If an active roost is observed within the project site, Mitigation Measure BIO-3c shall apply.
Mitigation Measure BIO-3c: Roost Buffer. If a day roost or a maternity colony is detected and is found sufficiently close to work areas to be disturbed by construction activities, the qualified biologist shall determine the extent of a construction-free buffer zone to be established around the roost in consultation with C DFW. Within the buffer zone, no site disturbance and mobilization of heavy equipment, including but not limited to equipment staging, fence installation, clearing, grubbing, vegetation removal, demolition, and grading shall be permitted. Monitoring shall be required to ensure compliance with relevant California Fish and Game Code requirements. Monitor ing dates and findings shall be documented.
Mitigation Measure BIO-4: Pre-Construction/Pre-Disturbance Survey for Nesting Birds.
Avoidance. To the extent feasible, construction activities should be scheduled to avoid the nesting season. If construction activities are scheduled to take place outside the nesting season, all impacts to nesting birds protected unde r the MBTA and California Fish and Game Code would be avoided. The nesting season for most birds in Santa Clara County extends from February 1 through August 31.
Pre-Construction Surveys. If it is not possible to schedule construction activities between September 1 and January 31, then preconstruction su rveys for nesting birds shall be conducted by a qualified biologist to ensure that no nests would be disturbed during project implementation. These surveys shall be conducted no more than five days prior to the initiation of any site disturbance activities and e quipment mobilization, including tree, shrub, or vegetation removal, fence installation, g rading, etc. If project activities are delayed by more than five days, an additional nesti ng bird survey shall be performed.
During this survey, the biologist will inspect all trees and other potential nesting habitats (e.g., trees, shrubs, culverts) in and immediately adjacent to the impact area for nests.
Active nesting is present if a bird is building a n est, sitting in a nest, a nest has eggs or chicks in it, or adults are observed carrying food to the nest. The results of the surveys shall be documented.
If an active nest is found sufficiently close to work areas to be disturbed by these activities, the biologist will determine the extent of a construction-free buffer zone to be established around the nest (typically up to 1,000 feet for raptors and up to 250 feet for other species), to ensure that no nests of species protected by the Migratory Bird Treaty Act MBTA and California Fish and Game Code will be disturbed during project implementation. Within the buffer zone, no site disturbance and mobilization o f heavy equipment, including but not limited to equipment staging, fence installation, c learing, grubbing, vegetation removal, demolition, and grading will be permitted until the chicks have fledged. Monitoring shall be required to ensure compliance with MBTA and relevant California Fish and Game Code requirements. Monitoring dates and findings shall be documented.
Mitigation Measure CUL-1: The City of Cupertino (City) shall note on any plan s that require ground disturbing excavation that there is a potential for exposing buried cultural resources including prehistoric Native American bur ials. Significant prehistoric cultural resources are defined as human burials, features or other clusterings of finds made, modified or used by Native American peoples in the past. The prehistoric and protohistoric indicators of prior cultural occupation by Native A mericans include artifacts and human bone, as well as soil discoloration, shell, animal bone, sandstone cobbles, ashy areas, and baked or vitrified clays. Prehistoric materials may include:
a. Human bone - either isolated or intact burials.
b. Habitation (occupation or ceremonial structures as interpreted from rock rings/features, distinct ground depressions, differ ences in compaction (e.g., house floors).
c. Artifacts including chipped stone objects such a s projectile points and bifaces; groundstone artifacts such as manos, metat es, mortars, pestles, grinding stones, pitted hammerstones; and, shell an d bone artifacts including ornaments and beads.
d. Various features and samples including hearths ( fire-cracked rock; baked and vitrified clay), artifact caches, faunal and sh ellfish remains (which permit dietary reconstruction), distinctive changes in soil stratigraphy indicative of prehistoric activities.
e. Isolated artifacts.
Mitigation Measure CUL-2: It is recommended that prior to the start of ground disturbing construction, the City should implement a Worker Awareness Training (WAT) program for cultural resources. Training shall be required for all construction personnel participating in ground disturbing construction to alert them to the archaeological sensitivity of the project area and provide protocols to follow in the event of a discovery of archaeological materials.
The training shall be provided by a Registered Professional Archaeologist (RPA).
The RPA shall develop and distribute for job site posting an "ALERT SHEET" summarizing potential archaeological finds that could be exposed and the protocols to be followed as well as points of contact to alert in the event of a discovery.
Mitigation Measure CUL-3: The City shall retain a Professional Archaeologist on an “on- call” basis during ground disturbing construction t o review, identify and evaluate any potential cultural resources that may be inadverten tly exposed during construction. The archaeologist shall review and evaluate any discoveries to determine if they are historical resource(s) and/or unique archaeological resources under the California Environmental Quality Act (CEQA).
If the Professional Archaeologist determines that any cultural resources exposed during construction constitute a historical resource and/or unique archaeological resource under CEQA, he/she shall notify the City and other approp riate parties of the evaluation and recommend mitigation measures to mitigate to a less -than significant impact in accordance with California Public Resources Code Section 15064.5. Mitigation measures may include avoidance, preservation in-place, recor dation, additional archaeological testing and data recovery among other options. The completion of a formal Archaeological Monitoring Plan (AMP) and/or Archaeological Treatment Plan (ATP) that may include data recovery may be recommended by the Professional Arc haeologist if significant archaeological deposits are exposed during ground disturbing construction. Development and implementation of the AMP and ATP and treatment of significant cultural resources will be determined by the City in consultation with any regulatory agencies.
Mitigation Measure CUL-4: In accordance with Section 7050.5 of the California Health and Safety Code, if potential human remains are found, immediately notify the lead agency (City of Cupertino or Santa Clara County) staff and the Santa Clara County Coroner of the discovery. The coroner would provide a determination regarding the nature of the remains within 48 hours of notification. No further excavat ion or disturbance of the identified material, or any area reasonably suspected to overlie additional remains, can occur until a determination has been made. If the County Coroner determines that the remains are, or are believed to be, of Native American ancestry, the coroner would notify the Native American Heritage Commission within 24 hours. In ac cordance with California Public Resources Code, Section 5097.98, the Native America n Heritage Commission must immediately notify those persons it believes to be the Most Likely Descendant from the deceased Native American. Within 48 hours of this n otification, the Most Likely Descendant would recommend to the lead agency their preferred treatment of the remains and associated grave goods.
Mitigation Measure TRIB-1: It is possible for a lead agency to determine that an artifact is considered significant to a local tribe, and thus considered a significant resource under CEQA, even if it would not otherwise be considered significant under CEQA. As such, all Native American tribal finds are to be considered s ignificant until the lead agency has enough evidence to make a determination of signific ance. In the event that Native American archaeological resources are discovered, o r suspected to have been discovered, Native American monitoring will be required before further ground disturbance shall be allowed.
Conditions of Approval
Standard Permit Condition: The following measures shall be applied to development of the project site to reduce and/or avoid impacts to paleontological resources:
• If vertebrate fossils or other paleontological res ources are discovered during construction, all work on the site shall stop immed iately until a qualified professional paleontologist can assess the nature and importance of the find and recommend appropriate treatment. Treatment may incl ude preparation and recovery of fossil materials so that they can be housed in an appropriate museum or university collection, and may also include preparation of a report for publication describing the finds. The City of Cupertino’s Proje ct Manager or other suitable representative shall be responsible for submitting the paleontologist’s report to the Director of Public Works, and implementing the recommendations of the qualified professional paleontologist. The representative shall submit a report to the Director of Public Works indicating how the paleontologist’s recommendations were complied with as soon as all measures have been incorporated into the project.
PUBLIC REVIEW PERIOD
The 30-day public circulation period for the Initial Study and draft MND began on February 12, 2024 and ended on March 13, 2024.
Chad Mosley
Director of Public Works
CERTIFICATE OF THE CITY CLERK
This is to certify that the above Mitigated Negative Declaration was filed in the Office of the City Clerk of the City of Cupertino on °6103 , 2024.
Kirsten Squarcia
City Clerk
to Susan Michael, Capital Improvements Program Manager
from Mike Campbell, Director of Environmental Analysis
re Final IS/MND Memo and Response to Comments - Lawrence-Mitty Park and Trail Project
date May 21, 2024
This memo was prepared as an informational document for the City of Cupertino for the Lawrence-Mitty Park and Trail Project . The purpose of this Final Initial Study/Mitigated Negative Declaration (IS/MND) memo is to summarize the public review process for the project. This Final IS/MND Memo and Attachments, together with the Draft IS/MND (February 2024), comprise the CEQA environmental review for the project.
Section 15074(b) of the CEQA Guidelines states, “Prior to approving a project, the decision-making body of the lead agency shall consider the proposed mitigated negative declaration together with any comments received during the public review process. The decision -making body shall adopt the proposed mitigated negative declaration only if it finds on the basis of the whole record before it (including the Initial Study and any comments received), that there is no substantial evidence that the project will have a significant effect on the environment and that the mitigated negative declaration refle cts the lead agency’s independent judgment and analysis.”
The project includes mitigation to reduce potentially significant impacts to less than significant levels. The Mitigation Monitoring and Reporting Program (MMRP) (Attachment A) presents these mitigation measures, identifies the timing and responsible entit y for implementation of the measures, and a sign -off for completion.
The 30-day public review period for the draft IS/MND began on February 12, 2024 and closed on March 13, 2024. The Notice of Intent (NOI) was filed at the Santa Clara County Clerk’s office (Attachment B) and published in the San Jose Mercury News on February 12, 2024. The document was also submitted for State Agency review with the State Clearinghouse (SCH# 2024020394). The NOI was also ATTACHMENT C-1
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mailed to owners and occupants of properties within 300 feet of the project site and posted on the City’s website at www.Cupertino.gov/lawrencemitty. The document was made available for review at City Hall, 10300 Torre Avenue, Cupertino.
One comment letter was received from a state agency, one letter was received from a local agencies and t wo comment letter s were received from the public during the comment period. These letters are included on the following pages, with responses to the comments following on the subsequent pages.
COMMENT LETTERS RECEIVED
Comment Letter 1: California Department of Transportation (Caltrans) Comment Letter 2: Valley Water
Comment Letter 3: Archbishop Mitty High School
Comment Letter 4: Russ Danielson
Comment Letter 5: Kitty Moore (Cupertino City Council)
“Provide a safe and reliable transportation network that serves all people and respects the environment” DISTRICT 4
OFFICE OF REGIONAL AND COMMUNITY PLANNING
P.O. BOX 23660, MS–10D | OAKLAND, CA 94623-0660
www.dot.ca.gov
March 12, 2024 SCH #:2024020394
GTS #:04-SCL-2024-01262
GTS ID: 31995
Co/Rt/Pm: SCL/280/7.049
Susan Michael, Capital Improvement Programs Manager
City of Cupertino
10300 Torre Avenue
Cupertino, CA 95014
Re: Lawrence-Mitty Park and Trail Project─ Mitigated Negative Declaration (MND) Dear Susan Michael:
Thank you for including the California Department of Transportation (Caltrans) in the environmental review process for the Lawrence-Mitty Park and Trail Project. We are committed to ensuring that impacts to the State’s multimodal transportation system and to our natural environment are identified and mitigated to support a safe, sustainable, integrated and efficient transportation system.
The Local Development Review (LDR) Program reviews land use projects and plans to ensure consistency with our mission and state planning priorities. The following comments are based on our review of the February 2024 MND.
Project Understanding
The proposed project involves the development of a new public park and an extension of the Saratoga Creek Trail. The site is located along the west side of Lawrence Expressway, south of I-280 and adjacent to Saratoga Creek in the City of Cupertino.
Travel Demand Analysis
With the enactment of Senate Bill (SB) 743, Caltrans is focused on maximizing efficient development patterns, innovative travel demand reduction strategies, and multimodal improvements. For more information on how Caltrans assesses Vehicle Miles Traveled (VMT) analysis for land use projects, please review Caltrans’ Transportation Impact Study Guide (link).
The project VMT analysis and significance determination are undertaken in a manner consistent with the Office of Planning and Research’s (OPR) Technical Advisory. Per Comment Letter 1: California Department of Transportation 1-1
Susan Michael, Capital Improvement Programs Manager
March 12, 2024
“Provide a safe and reliable transportation network that serves all people and respects the environment” the IS/MND, this project is found to have a less than significant VMT impact, therefore working towards meeting the State’s VMT reduction goals.
Construction-Related Impacts
Project work that requires movement of oversized or excessive load vehicles on State roadways requires a transportation permit that is issued by Caltrans. To apply, please visit Caltrans Transportation Permits (link). Prior to construction, coordination may be required with Caltrans to develop a Transportation Management Plan (TMP) to reduce construction traffic impacts to the State Transportation Network (STN).
Equitable Access
If any Caltrans facilities are impacted by the project, those facilities must meet American Disabilities Act (ADA) Standards after project completion. As well, the project must maintain bicycle and pedestrian access during construction. These access considerations support Caltrans’ equity mission to provide a safe, sustainable, and equitable transportation network for all users.
Encroachment Permit
Please be advised that any permanent work or temporary traffic control that encroaches onto Caltrans’ Right-of-Way (ROW) requires a Caltrans-issued encroachment permit. As part of the encroachment permit submittal process, you may be asked by the Office of Encroachment Permits to submit a completed encroachment permit application package, digital set of plans clearly delineating Caltrans’ ROW, digital copy of signed, dated and stamped (include stamp expiration date) traffic control plans, this comment letter, your response to the comment letter, and where applicable, the following items: new or amended Maintenance Agreement (MA), approved Design Standard Decision Document (DSDD), approved encroachment exception request, and/or airspace lease agreement.
The checklist TR-0416 (link
) is used to determine the appropriate Caltrans review
process for encroachment projects. The Office of Encroachment Permit requires 100% complete design plans and supporting documents to review and circulate the permit application package. To obtain more information and download the permit application, please visit Caltrans Encroachment Permits (link). Your application package may be emailed to [email protected].
Thank you again for including Caltrans in the environmental review process. Should you have any questions regarding this letter, please contact Marley Mathews, Transportation Planner, via [email protected]. For future early coordination opportunities or project referrals, please contact [email protected].
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Susan Michael, Capital Improvement Programs Manager
March 12, 2024
“Provide a safe and reliable transportation network that serves all people and respects the environment”
Sincerely,
YUNSHENG LUO
Branch Chief, Local Development Review
Office of Regional and Community Planning
c: State Clearinghouse
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Responses to Comment Letter 1: California Department of Transportation (Caltrans)
Response to Comment 1-1: Comment noted.
Response to Comment 1-2: Comment noted. The City will coordinate with Caltrans to secure any permits needed for oversize or overweight vehicles that might be used during construction. Please see the following Errata section.
Response to Comment 1-3: C omment noted. No Caltrans facilities will be impacted by the project.
Response to Comment 1 -4 : Comment noted. The City shall apply for an encroachment permit for any permanent work or temporary traffic control that will encroach onto Caltrans’ Right-of-Way.
From: Shree Dharasker <[email protected]>
Sent: Wednesday, March 13, 2024 4:58 PM
To: Susan Michael <[email protected]>
Cc: Josh Weinik <[email protected]>; Sarah Gidre <[email protected]> Subject: RE: draft CEQA for Lawrence-Mitty
Hi Susan,
The Santa Clara Valley Water District (Valley Water) has reviewed the draft Initial Study/Mitigated Negative Declaration (IS/MND) for the Lawrence Mitty Park and Trail project (Project) and has the following comments:
1) The Project appears within the Valley Habitat Plan (VHP) according to Valley Water GIS files. The VHP is not discussed in the report and the Project may require VHP permits. 2) The list of special status species that were removed from consideration are not provided.
Species-specific reasoning for removal should be included. 3) Existing understory habitats are comprised of mostly non-native and invasive species, which should be added to the understory habitat descriptions. 4) Page 4 of the Biological Constraints Analysis (BCA, page 36 of the pdf) states that candidate species under CESA in the biological resources considered section, were not included. This report was finalized in 2022, however there are now several CA candidate species that should be considered as the Project moves forward with permitting. 5) Very few wildlife species were analyzed in the BCA. Species included were CCC steelhead, California red-legged frog, yellow warbler, southwestern pond turtle, and SF dusky-footed woodrat. Nesting birds and bat roosts were also considered. Numerous additional special status species and candidate species for CA listing should have been analyzed even if they were then determined to be unlikely or absent (e.g. additional special status birds, special status bats such as western red bat, and special status fish such as southern coastal roach). Several additional species listed in the US Fish and Wildlife Service IPac should be considered. Additionally, this report is 2 years old and candidate species such as Monarch butterfly and Crotch’s bumble bee should be analyzed in future permitting.
6) Valley Water has detected western pond turtle (WPT) along Saratoga Creek upstream of this project site. Under the WPT section it states that the nearest WPT detections were
6.5 and 9 miles north of the project area on San Tomas Aquino Creek. Valley Water biologists observed WPT basking along stream banks of Saratoga Creek about 1.9 miles south of the project area in January 2024. The report states “It is highly unlikely that pond turtles would disperse into the study area due to the greater than 6-mile distance separating the site from the nearest recorded occurrence… Nonetheless, this species may occur elsewhere in Saratoga Creek (e.g. upstream), thus; it is possible that an individual could occasionally disperse into the study area.” This language addresses the potential for WPT to occur upstream, but it would be best to share Valley Water’s known WPT upstream occurrence with the project team.
Comment Letter 2: Valley Water, March 13, 2024
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7) Valley Water has no right of way or facilities in this parcel. The project is in FEMA Flood Zone D which include areas where there are possible but undetermined flood hazards or unstudied areas.
8) The Project is adjacent to Saratoga Creek where Valley Water has a flood control easement. Project development should follow the design guides in Guidelines and Standards for Land Use Near Streams, adopted by the City of Cupertino.
Please contact me if there are any questions,
Shree Dharasker
Associate Engineer Civil
Community Projects Review Unit
(408)630-3037
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Responses to Comment Letter 2: Valley Water
Response to Comment 2 -1: Comment noted. The project would not be covered under the Valley Habitat Plan (VHP) because the City of Cupertino has annexed the site from the City of San Jose, and the City of Cupertino is not a participating agency in the VHP. Onl y participating agencies are covered under the VHP.
Additionally, even though Valley Water is a participating agency in the VHP, we do not believe that there would be a nexus for participation because there is no Valley Water right-of-way on the project site. Thus, no revisions to the IS/MND relat ed to this comment are warranted.
Response to Comment 2 -2: C
omment noted. A brief discussion of special -status
plant species considered in the B iological Constraints Report (BCR) was included on page 54 of the IS/MND.
The discussion in the BCR with the reasoning used to discount special -status animals has been added to the IS/MND. Please see the following Errata section.
Response to Comment 2 -3: Comment noted. Discussions of the existing habitats (Mixed Oak Forest and Woodland Alliance, Coast Love Oak Woodland and Forest Alliance, and Developed) list several non -native and invasive species that are present in each of these habitats but does not call them out as such. See pages 44 – 46 of the IS/MND. We have added sentences at the end of the Mixed Oak Forest and Woodland Alliance and Coast Live Oak Woodland and Forest Alliance discussions in the Errata stating that most of the understory species are non-native and invasive species. Please see the following Errata section.
Response to Comment 2 -4: C
omment noted. Candidate species under CESA and
FESA were considered in the BCR; however, a bullet item stating that they were considered was erroneously left out of the “Biological resources that were considered for this analysis“ section, which starts on page 3 of the BCR.
We agree that the status of some of the species that were considered in the IS/MND have changed. The species that was addressed in the IS/MND, based on the BCR and whose status has changed since the BCR was prepared is the southwestern pond turtle. The southwestern pond had no federal status when the BCR was prepared. We recognize that the turtle is now a federal candidate for listing under the Federal Endangered Species Act (FESA) and it is still a California species of special concern. We agree that this newly-petitioned candidate species and potentially other new candidate species should be considered as the project moves
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forward with permitting. An updated Biological Resources Report will be prepared to support the permit applications.
Response to Comment 2 -5: Comment noted. As stated in Response to Comment 2-4, the BCR will be revised to include additional species whose status has changed prior to filing the permit applications. Regarding other species mentioned by the commentor, the analysis contained in Chapt er 3.4 Biological Resources correctly focused on impacts and mitigation for the species that were most likely to occur on the site and/or be impacted by the project, based on our research and corroborated by our field investigation. An updated Biological Resources Report will be prepared to support the permit applications.
Response to Comment 2-6
: Comment noted. We agree that Valley Water’s recent
observations of the western pond turtle should be included in the language that addresses the western pond turtle. We have added that information and a new reference. Please see the following Errata section.
Response to Comment 2 -7: C omment noted. Section 3.10.1 of the Initial Study/MND describes the project site as being located outside the limits of the 100-year flood plain, and designated as being within Zone D (Area of Undetermined Flood Hazard). References to Valley Water’s ownership of property or facilities have been deleted. Please see the following Errata section.
Response to Comment 2-8: C omment noted. Chapter 3.4.3 Impact Discussion of the Initial Study/MND has been revised to include a discussion of Valley Water’s Guidelines and Standards for Land Use Near Streams. Please see the following Errata section.
March 12, 2024
City of Cupertino, Public Works Department
10300 Torre Avenue
Cupertino, CA 95014
ATTN: Susan Michael, Capital Improvement Programs Manager Re: Lawrence Mitty Park and Trail project
Dear Susan:
Thank you for the opportunity to comment on the Draft MND for the Lawrence Mitty Park and Trail Project. I have reviewed the draft and would like to submit comment regarding existing multimodal access and pedestrian safety (Section 3.17.1 Environmental Setting). Archbishop Mitty High School opened at the 5000 Mitty Way site in the Fall of 1964 to 164 boys. We now educate over 1700 young men and women daily in the tradition of Catholic education and have built a robust campus environment that services students and their families all day on every day of the week.
The addition of the Lawrence Mitty Park and Trail Project is exciting for the neighborhood and we are in great support of the goals set forth in the project. As part of our own campus master planning activities, we are continuing to evaluate bicycle and pedestrian safety for our students and would be open to discussing increased mitigation efforts for the crosswalks, particularly at Lawrence Expressway and Mitty Way, as well as, Lawrence Expressway and Moorpark Avenue/Bollinger Road. With more proposed commercial and residential developments in the area, we anticipate increased car traffic on Lawrence Expressway, and have concern about bicycle and pedestrian safety for those families and residents who wish to access the trail park from the East side of Lawrence Expressway.
Please do not hesitate to engage us to discuss opportunities for partnership or advocacy. We are interested in working together to ensure the safest bicycle and pedestrian access routes for our students, families, and local neighborhood residents.
Sincerely,
Latanya Hilton
President
Comment Letter 3: Archbishop Mitty High School
3-1
12 MIG, Inc.
Responses to Comment Letter 3: Archbishop Mitty High School Response to Comment 3 -1: Comment Noted. The Initial Study/MND does not identify any potentially significant impacts requiring mitigation related to bicycle and pedestrian safety that would result from implementation of the proposed park and trail project. Any modifications to the existing cross walks at the intersections of Lawrence Expressway and Mitty Way or Lawrence Expressway and Moorpark Avenue/Bollinger Road to improve bicycle and pedestrian safety would need to be facilitated by the Santa Clara County Roads and Airports Division and City o f San Jose, who are responsible for the maintenance and improvement of these roads.
February 20, 2024
Ms. Susan Michael (CIP) Manager
City of Cupertinoz Public Works Dept.
10300 Torre Avenue
Cupertinoi Calif. 95014
RE:Lawrence Mitty Park & Trail Project
Dear Ms. Michael,
I am writing to detail 3 points that concern me about the above-mentioned project. My family has lived on Sterling Blvd @ Barnhart, since 1954. (Original Rancho Rinconada buyer) The proposed project would be just across the creeki from the family home. My Two Brothers live in that residence(10510 Sterling Blvd and I am the Trustee of the Dorothy M. Danielson Trust, and con- trol the property.
My Three areas of concern are:
l) The Highway & Aiirports Dept. has parked and operated heavy equipment on this site for many years.Anyone who has ever looked where tractors and heavy trucks parky has seen the ground discoloration and evidence of fluid leakages.
seen many potentially viable projects of this nature the site ends up being a glorified "Dog Park. " As concernedi a dog owner better have their animal on a they can stop by, but then move on - not "take over wieh canines running wild.
2 ) I have
ruinedi when
far as I'm
leash, and
the area"
30 PARKING ISSUES - As there seems to be only one way to access this proposed development (the Bridge by Sterling Barnhart Park) What plans are being made to mitigate the influx of carsi into an already impacted Sterling Blvd area? I wrote to the City yrs. aqoi when Sterling-Barnhart park was proposed. I inquuired about parking impact. The response was that "everyone" would walk there. (The City then rushed out and ,oainted the curb Red by the park ! )
ReBpeChffullySuOmlM""'{d'
Russ Danielson Trustee 10510 Sterling Blvd Home
4-1
4-2
4-3
Comment Letter 4: Russ Danielson, February 20, 2024
14 MIG, Inc.
Responses to Comment Letter 4: Russ Danielson
Response to Comment 4-1: The Initial Study/MND includes review and analyses of existing hazardous materials conditions at the site, as well analyses of potential impacts based on the findings and recommendations of technical reports prepared for the site by Cornerstone Earth Group (Cornerstone). The reports included a Phase I Environmental Site Assessment Update and Phase II Soil Quality Evaluation dated February 25, 2022, which were included in Appendix C. The report updates the Phase I ESA and Preliminary Soil Quality Evaluation that Cornerstone prepared previously for the site, dated April 18, 2016.
Cornerstone collected soil samples from areas of the site containing construction and demolition waste piles, and from an area of the site where a suspected truck wash was located. Analyses of samples of the construction and demolition waste did not detect organochlorine pesticides at concentrations exceeding residential screening levels, and no polychlorinated biphenyls (PCBs), volatile organic compounds (VOCs) or total petroleum hydrocarbons as gasoline (TPHg) were detected. Additionally, the detected metals concentrations appeared to be typical of natural background concentrations. Analyses of a sample collected from sediments within the gravel in the suspected truck wash location detected total petroleum hydrocarbons as oil (TPHo) at 340 milligrams per kilogram (mg/kg), which does not exceed the RWQCB’s current Environmental Screening Level (ESL) for TPHo of 1,600 mg/kg. The detected metal concentrations in the analysis appeared to be typical of natural back ground concentrations, and no VOCs were detected. Based on these test results, the Initial Study/MND concluded that the impact was less than significant with regard to significant hazard to the public or the environment through reasonably foreseeable upset and accident conditions involving the release of hazardous materials into the environment.
Response to Comment 4-2: This is a comment on the merits of the proposed Park and trail project and not on the adequacy of the Initial Study/MND , and does not raise any significant environmental issues. No further response is required.
Inclusion of these comments in this Final Initial Study/MND Memo will make the commentor's views available to the City of Cupertino City Council, and other public officials who will make decisions about the proposed project.
Response to Comment 4 -3 : As described in the document, the project , which is designed as a component of the existing San Tomas Aquino/Saratoga Creek Trail, provides no on-site parking and no direct vehicular access to the proposed park or trail. Visitors accessing the park by vehicle would need to park on the adjacent
15 MIG, Inc.
public streets near Sterling Barnhart Park or in the neighborhood east of Lawrence Expressway across from the site, and use the existing bicycle/pedestrian access paths – the bridge from Sterling Barnhart Park and crosswalk on Lawrence Expressway at Mitty Way - to get to the park and trail.
Per the CEQA Guidelines, the Initial Study/MND is not required to analyze parking, and consequently does not include thresholds of significance for parking. The assessment prepared by Hexagon Transportation Consultants for the project therefore focused on potential impacts related to the CEQA Guidelines mandated issues of Vehicle Miles Traveled VMT, multimodal access, and pedestrian safety.
From: Kitty Moore <[email protected]>
Sent: Monday, February 12, 2024 12:57 PM
To: Susan Michael <[email protected]>
Cc: Pamela Wu <[email protected]>; Christopher Jensen <[email protected]>; Matt Morley <[email protected]>
Subject: IS/MND Comments Re: CEQA for Lawrence-Mitty
Hi Sus
an,
If
there is an email we should be addressing our comments to, please let us know where to forward comments moving forward.
I h
ave attached pages from the Cornerstone Earth Group Site Plan showing the various soil samples taken, and the tables of the soil sample data provided, but several samples were not included as noted below. I am also concerned about the lead screening level selected given that this is parkland, and I have included the same screening level tables used in the report as an attachment.
1. I
have a question on where to locate/please provide the soil sample data for the following soil sam
ples:
SS
-2
SS-3
SS-7
SS-8
SS-10
SS-11
SS-14
T
heses samples were from 2022.
2. I
would like the 2016 referenced SP sample data as well:
SP-
1 through SP-6 data were not included in the report.
3. T
he Cornerstone report uses a lead screening level of 80 mg/kg. See PDF 9 of 16 of the attached E
SLs. I would like to understand why such a high level was selected, even higher than the t
errestrial screening level which has parkland as an example: 32 mg/kg. Since this is vegetated pa
rkland space, it seems the lower level would be more appropriate. What is the rationale for having such a high lead screening level, or may it be lowered to the Terrestrial level to provide a safer environment? Terrestrial is defined as: “Terrestrial Ecological Impacts: Address potential toxicity to terrestrial flora and fauna. For use in developed urban areas only.” Tha
nk you,
K
itty Moore
Comment Letter 5: Kitty Moore
5-1
5-2
5-3
Kitty Moore
Councilmember
City Council
[email protected]
(408) 777-1389
Lawrence Expressway
Mitty Way
Highway 280
Approximate
Site Boundary
Base by Google Earth, dated 09/04/2020
0 200 400
APPROXIMATE SCALE (FEET)
N
Project Number
Figure Number
Date Drawn By
Figure 2
1340-1-1
RRN
Site Plan
Lawrence Mitty Park
Cupertino, CA
March 2022
APN 375-22-001
APN 375-21-001
Archbishop Mitty
High School
Residential
Residential
Residential
Residential
Approximate location of soil sample (SS)
(Cornerstone, 01/25/2022)
Approximate location of soil sample (SS/SP)
(Cornerstone, 03/02/2016)
Approximate location of soil sample (SP)
(Cornerstone, 10/24/2016)
Legend
SP-4A
SP-4C
SP-4B
SP-4D
SP-5A
SP-5B
SP-5C SP-5D
SP-6ASP-6B
SP-6C
SP-6DSP-4A
SP-4C
SP-4B
SP-4D
SP-5A
SP-5B
SP-5C SP-5D
SP-6ASP-6B
SP-6C
SP-6D
SS-10
SS-9
SS-8
SS-7
SS-6
SS-5
SS-4 SS-1
SS-3
SP-1A
SP-1B SP-1C
SP-1D
SP-2A
SP-2B SP-2C
SP-2DSP-3A SP-3B
SP-3D SP-3C
SS-11
SS-2
SS-10
SS-9
SS-8
SS-7
SS-6
SS-5
SS-4 SS-1
SS-3
SP-1A
SP-1B SP-1C
SP-1D
SP-2A
SP-2B SP-2C
SP-2DSP-3A SP-3B
SP-3D SP-3C
SS-11
SS-2
SS-19
SS-12 SS-13
SS-14
SS-6A
SS-6B
SS-6C
SS-15
SS-5A SS-5C
SS-5D
SS-5B SS-16
SS-4A SS-4C
SS-4D
SS-4B
SS-17 SS-1B
SS-1A SS-1C
SS-1D
SS-18 SS-19
SS-12 SS-13
SS-14
SS-6A
SS-6B
SS-6C
SS-15
SS-5A SS-5C
SS-5D
SS-5B SS-16
SS-4A SS-4C
SS-4D
SS-4B
SS-17 SS-1B
SS-1A SS-1C
SS-1D
SS-18
SS-13 1/25/2022
Depth (ft)
Lead
STLC Lead
TCLP Lead
2 to 3
19 ---
---
0 to 1
220
7.01 <0.20
4 to 5
10.4 ---
---
SS-6 3/2/2016
Depth (ft)
Lead
0 to ½
93 SS-4 3/2/2016
Depth (ft)
Lead
0 to ½
87 SS-1D 1/25/2022
Depth (ft)
Lead
STLC Lead
TCLP Lead
2 to 3
10.9 ---
---
0 to 1
216
9.14 <0.20
4 to 5
6.5 ---
---
SS-1 3/2/2016
Depth (ft)
Lead
0 to ½
130
SS-18 1/25/2022
Depth (ft)
Lead
STLC Lead
TCLP Lead
2 to 3
7.87 ---
---
0 to 1
9.09 ---
---
4 to 5
113
4.60 <0.20
Screening Level
Residential
Environmental
Screening Criteria 1
STLC (California
Hazardous Waste)
Environmental
Screening Criteria 2
TCLP (Federal
Hazardous Waste)
Environmental
Screening Criteria 3
Lead 80 54 54
Concentraions measured in mg/kg unless noted otherwise
1 2
3 4 miligrams per liter (mg/L)
< Not detected at or above laboratory reproting limit
BOLD Concentation exceeds Residential Screening Critera Department of Toxic Substances Control (DTSC) Residential Screening Level (SL), HERO HHRA Note 3 - April 2019
Soluble Threshold Limit Concentration - California Code of Regulations, Title 22, Chapter 11, Article 3.
Toxicity Characteristic Leaching Procedure - California Code of Regulations, Title 40, Chapter 1, Part 261.
or STLC/TCLP regulatory value
Not analyzed---
Figure presents analytical data from boring
locations where lead concentrations were greater
than selected environmental screening criteria.
DRAFT
CORNERSTONE
EARTH GROUP
Lawrence Expressway
Approximate
Site Boundary
Base by Google Earth, dated 09/04/2020
Overlay by Giuliani & Kull - San Jose, Inc., ALTA/NSPS
Land Title Surveys - Sheets 2-4, dated 07/01/2020
Matchline: See Figure 2B
0 50 100
APPROXIMATE SCALE (FEET)
N
Project Number
Figure Number
Date Drawn By
Figure 2A
1340-1-1
RRN
Site Plan
Lawrence Mitty Park
Cupertino, CA
March 2022
Approximate location of soil sample (SS)
(Cornerstone, 01/25/2022)
Approximate location of soil sample (SS/SP)
(Cornerstone, 03/02/2016)
Legend
APN 375-22-001APN 375-22-001 APN 375-21-001APN 375-21-001 SS-10SS-10
SS-9SS-9
SS-8SS-8
SP-1ASP-1A
SP-1BSP-1B
SS-12SS-12 SS-13SS-13
SS-14SS-14
SS-13 1/25/2022
Depth (ft)
Lead
STLC Lead
TCLP Lead
2 to 3
19 ---
---
0 to 1
220
7.01 <0.20
4 to 5
10.4 ---
---
Screening Level
Residential
Environmental
Screening Criteria 1
STLC (California
Hazardous Waste)
Environmental
Screening Criteria 2
TCLP (Federal
Hazardous Waste)
Environmental
Screening Criteria 3
Lead 80 54 54
Concentraions measured in mg/kg unless noted otherwise
1 2
3 4 miligrams per liter (mg/L)
< Not detected at or above laboratory reproting limit
BOLD Concentation exceeds Residential Screening Critera Department of Toxic Substances Control (DTSC) Residential Screening Level (SL), HERO HHRA Note 3 - April 2019
Soluble Threshold Limit Concentration - California Code of Regulations, Title 22, Chapter 11, Article 3.
Toxicity Characteristic Leaching Procedure - California Code of Regulations, Title 40, Chapter 1, Part 261.
or STLC/TCLP regulatory value
Not analyzed---
Figure presents analytical data from boring
locations where lead concentrations were greater
than selected environmental screening criteria.
DRAFT
/
/// "
® CORNERSTONE
EARTH GROUP
,
/
/
_,:r, /
/
/
1/ f 1
PARCEl.3
APN- A PORTION OF 375-21-001
AREA-2.81 * AC.
'/ 'ii
/ J
,. ./ ii
.• . I
··' ,. I ' _,
t •
\ ~-1
-- ..
Lawrence Expressway
Approximate
Site Boundary
Base by Google Earth, dated 09/04/2020
Overlay by Giuliani & Kull - San Jose, Inc., ALTA/NSPS
Land Title Surveys - Sheets 4-6, dated 07/01/2020
Matchline: See Figure 2C
Matchline: See Figure 2A
0 50 100
APPROXIMATE SCALE (FEET)
N
Project Number
Figure Number
Date Drawn By
Figure 2B
1340-1-1
RRN
Site Plan
Lawrence Mitty Park
Cupertino, CA
March 2022
Approximate location of soil sample (SS)
(Cornerstone, 01/25/2022)
Approximate location of soil sample (SS/SP)
(Cornerstone, 03/02/2016)
Legend
APN 375-21-001APN 375-21-001SS-7SS-7
SS-6SS-6
SP-1CSP-1C
SP-1DSP-1D
SS-6ASS-6A
SS-6BSS-6B
SS-6CSS-6C
SS-15SS-15
SS-6 3/2/2016
Depth (ft)
Lead
0 to ½
93 Screening Level
Residential
Environmental
Screening Criteria 1
STLC (California
Hazardous Waste)
Environmental
Screening Criteria 2
TCLP (Federal
Hazardous Waste)
Environmental
Screening Criteria 3
Lead 80 54 54
Concentraions measured in mg/kg unless noted otherwise
1 2
3 4 miligrams per liter (mg/L)
< Not detected at or above laboratory reproting limit
BOLD Concentation exceeds Residential Screening Critera Department of Toxic Substances Control (DTSC) Residential Screening Level (SL), HERO HHRA Note 3 - April 2019
Soluble Threshold Limit Concentration - California Code of Regulations, Title 22, Chapter 11, Article 3.
Toxicity Characteristic Leaching Procedure - California Code of Regulations, Title 40, Chapter 1, Part 261.
or STLC/TCLP regulatory value
Not analyzed---
Figure presents analytical data from boring
locations where lead concentrations were greater
than selected environmental screening criteria.
DRAFT
■
■
t \ ,•
i r-■ ;:_
I ,,.,,.
~]~, :
-- ~--
1 ··~,-~..,
• ®. I . ,·
' ~~~=-=-= ~ =-= ~ ----~ - -I ~. -- ~ ._ - ____:._~~~~ r.~ 2 r :c~ c2:~:- =~~".~c_c __ c ~ ~ C. '' ~:.c_:: :'::2,_c:~:~~:-? ~~ ®
:-=---2~".:~,~~:~";~~:. -~--,,; ~~ ~~~ - -~ . ' ' '-~£_ - - "
CORNERSTONE
EARTH GROUP
·· --
·.•. -
J.':i;!lfJi,-:;~---- -----
-- ~ ca.- a..r,
-..r; ~:.. -
Lawrence Expressway
Approximate
Site Boundary
Base by Google Earth, dated 09/04/2020
Overlay by Giuliani & Kull - San Jose, Inc., ALTA/NSPS
Land Title Surveys - Sheets 6-9, dated 07/01/2020
Matchline: See Figure 2D
Matchline: See Figure 2B
0 50 100
APPROXIMATE SCALE (FEET)
N
Project Number
Figure Number
Date Drawn By
Figure 2C
1340-1-1
RRN
Site Plan
Lawrence Mitty Park
Cupertino, CA
March 2022
Approximate location of soil sample (SS)
(Cornerstone, 01/25/2022)
Approximate location of soil sample (SS/SP)
(Cornerstone, 03/02/2016)
Approximate location of soil sample (SP)
(Cornerstone, 10/24/2016)
Legend
APN 375-21-001APN 375-21-001
SP-4ASP-4A
SP-4BSP-4B
SP-4CSP-4C
SP-4DSP-4D
SP-5ASP-5A SP-5BSP-5B
SP-5CSP-5C
SP-5DSP-5D
SP-6ASP-6A
SS-3SS-3
SP-2ASP-2A
SP-2BSP-2B
SP-2CSP-2C
SP-2DSP-2D SP-3ASP-3A SP-3BSP-3B
SP-3DSP-3D
SP-3CSP-3C
SS-5SS-5 SS-4SS-4
SS-1SS-1
SS-5ASS-5A SS-5CSS-5C
SS-5DSS-5D
SS-5BSS-5B
SS-16SS-16
SS-4ASS-4A SS-4CSS-4C
SS-4DSS-4D
SS-4BSS-4B
SS-17SS-17
SS-1BSS-1B
SS-1ASS-1A SS-1CSS-1C
SS-1DSS-1D
SS-4 3/2/2016
Depth (ft)
Lead
0 to ½
87 SS-1D 1/25/2022
Depth (ft)
Lead
STLC Lead
TCLP Lead
2 to 3
10.9 ---
---
0 to 1
216
9.14 <0.20
4 to 5
6.5 ---
---
SS-1 3/2/2016
Depth (ft)
Lead
0 to ½
130
Screening Level
Residential
Environmental
Screening Criteria 1
STLC (California
Hazardous Waste)
Environmental
Screening Criteria 2
TCLP (Federal
Hazardous Waste)
Environmental
Screening Criteria 3
Lead 80 54 54
Concentraions measured in mg/kg unless noted otherwise
1 2
3 4 miligrams per liter (mg/L)
< Not detected at or above laboratory reproting limit
BOLD Concentation exceeds Residential Screening Critera Department of Toxic Substances Control (DTSC) Residential Screening Level (SL), HERO HHRA Note 3 - April 2019
Soluble Threshold Limit Concentration - California Code of Regulations, Title 22, Chapter 11, Article 3.
Toxicity Characteristic Leaching Procedure - California Code of Regulations, Title 40, Chapter 1, Part 261.
or STLC/TCLP regulatory value
Not analyzed---
Figure presents analytical data from boring
locations where lead concentrations were greater
than selected environmental screening criteria.
DRAFT
- -- --- --· . ~-- ----- ·-···
-- " _______ :::, ----~:-.--·~ ~--r•-
i ·:-~-,i- ~---- ~ ~ -·: .,. ·;., I . II ,.,. '
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I •
■
1- =--,.11'·•
I
■
I
■
I
■
I
■
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CORNERSTONE
EARTH GROUP
I I
I I
I I
I I
I
I
I
I
I L I "
:.;~-2:.~ .:3
I I I
PARCEL2
APN-A PORTION OF 375-21-001
AREA:4.56± AC.
\. ..,.--.·--,· ·,-•• _\ -- ___ .
; !:_a;"'_.;--,,;:'.::-'-3~ := --q
.... iELLLIAf~ ■
~ ~· ~·-,;::~_~:::-.
Lawrence Expressway
Approximate
Site Boundary
Base by Google Earth, dated 09/04/2020
Overlay by Giuliani & Kull - San Jose, Inc., ALTA/NSPS
Land Title Surveys - Sheets 8-11, dated 07/01/2020
Matchline: See Figure 2C
0 50 100
APPROXIMATE SCALE (FEET)
N
Project Number
Figure Number
Date Drawn By
Figure 2D
1340-1-1
RRN
Site Plan
Lawrence Mitty Park
Cupertino, CA
March 2022
Approximate location of soil sample (SS)
(Cornerstone, 01/25/2022)
Approximate location of soil sample (SS/SP)
(Cornerstone, 03/02/2016)
Approximate location of soil sample (SP)
(Cornerstone, 10/24/2016)
Legend
APN 375-21-001APN 375-21-001
SP-6BSP-6B
SP-6CSP-6C
SP-6DSP-6D
SS-11SS-11
SS-2SS-2
SS-19SS-19
SS-18SS-18
SS-18 1/25/2022
Depth (ft)
Lead
STLC Lead
TCLP Lead
2 to 3
7.87 ---
---
0 to 1
9.09 ---
---
4 to 5
113
4.60 <0.20
Screening Level
Residential
Environmental
Screening Criteria 1
STLC (California
Hazardous Waste)
Environmental
Screening Criteria 2
TCLP (Federal
Hazardous Waste)
Environmental
Screening Criteria 3
Lead 80 54 54
Concentraions measured in mg/kg unless noted otherwise
1 2
3 4 miligrams per liter (mg/L)
< Not detected at or above laboratory reproting limit
BOLD Concentation exceeds Residential Screening Critera Department of Toxic Substances Control (DTSC) Residential Screening Level (SL), HERO HHRA Note 3 - April 2019
Soluble Threshold Limit Concentration - California Code of Regulations, Title 22, Chapter 11, Article 3.
Toxicity Characteristic Leaching Procedure - California Code of Regulations, Title 40, Chapter 1, Part 261.
or STLC/TCLP regulatory value
Not analyzed---
Figure presents analytical data from boring
locations where lead concentrations were greater
than selected environmental screening criteria.
DRAFT
®
® CORNERSTONE
EARTH GROUP
Boring ID Sample ID Date Depth (feet) Lead STLC - Lead
(mg/L)
TCLP -
Lead
(mg/L)
SS-1 SS-1 (0-0.5) 3/2/2016 0-½ 130 --- ---
SS-1A (0-1) 1/25/2022 0-1 26.5 --- ---
SS-1A (2-3) 1/25/2022 2-3 9.14 --- ---
SS-1A (4-5) 1/25/2022 4-5 6.55 --- ---
SS-1B (0-1) 1/25/2022 0-1 10.5 --- ---
SS-1B (2-3) 1/25/2022 2-3 6.43 --- ---
SS-1B (4-5) 1/25/2022 4-5 6.32 --- ---
SS-1C (0-1) 1/25/2022 0-1 20.5 --- ---
SS-1C (2-3) 1/25/2022 2-3 7.36 --- ---
SS-1C (4-5) 1/25/2022 4-5 6.38 --- ---
SS-1D (0-1) 1/25/2022 0-1 216 9.14 <0.20
SS-1D (2-3) 1/25/2022 2-3 10.9 --- ---
SS-1D (4-5) 1/25/2022 4-5 6.5 --- ---
SS-4 SS-4 (0-0.5) 3/2/2016 0-½ 87 --- ---
SS-4A (0-1) 1/25/2022 0-1 13.4 --- ---
SS-4A (2-3) 1/25/2022 2-3 7.31 --- ---
SS-4A (4-5) 1/25/2022 4-5 6.78 --- ---
SS-4B (0-1) 1/25/2022 0-1 3.69 --- ---
SS-4B (2-3) 1/25/2022 2-3 7.7 --- ---
SS-4B (4-5) 1/25/2022 4-5 5.67 --- ---
SS-4C (0-1) 1/25/2022 0-1 25.1 --- ---
SS-4C (2-3) 1/25/2022 2-3 7.13 --- ---
SS-4C (4-5) 1/25/2022 4-5 7 --- ---
SS-4D (0-1) 1/25/2022 0-1 48.3 --- ---
SS-4D (2-3) 1/25/2022 2-3 10.7 --- ---
SS-4D (4-5) 1/25/2022 4-5 18.6 --- ---
SS-4A
SS-4B
SS-4C
SS-4D
Table 1. Analytical Results of Soil Samples
(Concentrations in mg/kg; unless otherwise noted)
SS-1A
SS-1B
SS-1C
SS-1D
Mitty Park Ph II Soil Quality Evaluation
1340-1-1 Data Tables Page 1
DRAFT
IE!
C01 RNERSTONE
EARTH GROUP
Boring ID Sample ID Date Depth (feet) Lead STLC - Lead
(mg/L)
TCLP -
Lead
(mg/L)
Table 1 continued. Analytical Results of Soil Samples
(Concentrations in mg/kg; unless otherwise noted)
SS-5 SS-5 (0-0.5) 3/2/2016 0-½ 75 --- ---
SS-5A (0-1) 1/25/2022 0-1 28.9 --- ---
SS-5A (2-3) 1/25/2022 2-3 8.92 --- ---
SS-5A (4-5) 1/25/2022 4-5 9.44 --- ---
SS-5B (0-1) 1/25/2022 0-1 10.4 --- ---
SS-5B (2-3) 1/25/2022 2-3 7.63 --- ---
SS-5B (4-5) 1/25/2022 4-5 8.36 --- ---
SS-5C (0-1) 1/25/2022 0-1 9.52 --- ---
SS-5C (2-3) 1/25/2022 2-3 7.85 --- ---
SS-5C (4-5) 1/25/2022 4-5 8.89 --- ---
SS-5D (0-1) 1/25/2022 0-1 70.1 <0.20 ---
SS-5D (2-3) 1/25/2022 2-3 7.66 --- ---
SS-5D (4-5) 1/25/2022 4-5 9.6 --- ---
SS-6 SS-6 (0-0.5) 3/2/2016 0-½ 93 --- ---
SS-6A (0-1) 1/25/2022 0-1 26.4 --- ---
SS-6A (2-3) 1/25/2022 2-3 9.88 --- ---
SS-6A (4-5) 1/25/2022 4-5 10.2 --- ---
SS-6B (0-1) 1/25/2022 0-1 11.1 --- ---
SS-6B (2-3) 1/25/2022 2-3 11.6 --- ---
SS-6B (4-5) 1/25/2022 4-5 9.52 --- ---
SS-6C (0-1) 1/25/2022 0-1 14.5 --- ---
SS-6C (2-3) 1/25/2022 2-3 9.18 --- ---
SS-6C (4-5) 1/25/2022 4-5 10.6 --- ---
SS-9 SS-9 (0-0.5) 3/2/2016 0-½ 27 --- ---
SS-12 (0-1) 1/25/2022 0-1 35.3 --- ---
SS-12 (2-3) 1/25/2022 2-3 8.4 --- ---
SS-12 (4-5) 1/25/2022 4-5 9.15 --- ---
SS-5C
SS-5D
SS-6A
SS-6B
SS-6C
SS-12
SS-5A
SS-5B
Mitty Park Ph II Soil Quality Evaluation
1340-1-1 Data Tables Page 2
DRAFT
IE!
C01 RNERSTONE
EARTH GROUP
Boring ID Sample ID Date Depth (feet) Lead STLC - Lead
(mg/L)
TCLP -
Lead
(mg/L)
Table 1 continued. Analytical Results of Soil Samples
(Concentrations in mg/kg; unless otherwise noted)
SS-13 (0-1) 1/25/2022 0-1 220 7.01 <0.20
SS-13 (2-3) 1/25/2022 2-3 19 --- ---
SS-13 (4-5) 1/25/2022 4-5 10.4 --- ---
SS-15 (0-1) 1/25/2022 0-1 12.8 --- ---
SS-15 (2-3) 1/25/2022 2-3 16.8 --- ---
SS-15 (4-5) 1/25/2022 4-5 11 --- ---
SS-18 (0-1) 1/25/2022 0-1 9.09 --- ---
SS-18 (2-3) 1/25/2022 2-3 7.87 --- ---
SS-18 (4-5) 1/25/2022 4-5 113 4.60 <0.20
SS-19 (0-1) 1/25/2022 0-1 6.7 --- ---
SS-19 (2-3) 1/25/2022 2-3 8.12 --- ---
SS-19 (4-5) 1/25/2022 4-5 8.55 --- ---
220 9.14 <0.20
80 5 5
DTSC‐SL1
(Residential)
STLC2 TCLP3
1 2
3 ND
<
---
BOLD
Not detected at or above laboratory reporting limit
Not detected at or above laborator
y reporting limit
Not analyzed
Concentration exceeds selected Environmental Screenin g Criteria SS-19
Maiumum Detection
Environmental Screening Criteria
-------------------
Screening Criteria Basis
Department of Toxic Substances Control (DTSC) Residential Screening Level (SL), HERO HHRA Note 3 - April 2019
Soluble Threshold Limit Concentration (STLC) - California Code of Regulations, Title 22, Chapter 11, Article 3.
Toxicity Characteristic Leaching Procedure (TCLP) - California Code of Regulations, Title 40, Chapter 1, Part 261.
SS-13
SS-15
SS-18
Mitty Park Ph II Soil Quality Evaluation
1340-1-1 Data Tables Page 3
DRAFT
IE!
C01 RNERSTONE
EARTH GROUP
Chemicals CAS No. Groundwater
(µg/L)
Soil
(mg/kg)
Subslab / Soil Gas
(µg/m3)
Indoor Air
(µg/m3)
Acenaphthene [PAH] 83-32-9 1.5E+01 1.2E+01 1.7E+04 5.1E+02 Acenaphthylene [PAH] 208-96-8 1.5E+01 6.4E+00 -- --
Acetone 67-64-1 1.5E+03 9.2E-01 1.0E+06 3.1E+04
Aldrin 309-00-2 1.4E-04 2.4E-03 1.9E-02 5.7E-04
Anthracene [PAH] 120-12-7 7.3E-01 1.9E+00 -- --
Antimony 7440-36-0 6.0E+00 1.1E+01 -- --
Arsenic 7440-38-2 1.0E+01 6.7E-02 -- --
Barium 7440-39-3 1.0E+03 3.9E+02 -- --
Benzene 71-43-2 4.2E-01 2.5E-02 3.2E+00 9.7E-02
Benzo[a]anthracene [PAH] 56-55-3 1.7E-02 6.3E-01 3.1E-01 9.2E-03 Benzo[b]fluoranthene [PAH] 205-99-2 4.9E-02 1.1E+00 -- -- Benzo[k]fluoranthene [PAH] 207-08-9 4.9E-02 2.8E+00 -- -- Benzo[g,h,i]perylene [PAH] 191-24-2 1.0E-01 2.5E+00 -- -- Benzo[a]pyrene [PAH] 50-32-8 1.4E-02 1.1E-01 -- --
Beryllium 7440-41-7 2.7E+00 5.0E+00 -- --
1,1-Biphenyl 92-52-4 5.0E-01 4.2E-01 1.4E+01 4.2E-01
Bis(2-chloroethyl) ether 111-44-4 6.3E-03 3.4E-05 1.3E-01 4.0E-03 Bis(2-chloro-1-methylethyl) ether 108-60-1 3.6E-01 5.1E-03 9.4E+00 2.8E-01 Bis(2-ethylhexyl) phthalate 117-81-7 4.0E+00 8.0E-01 -- -- Boron 7440-42-8 1.6E+00 1.2E+02 -- --
Bromodichloromethane 75-27-4 8.7E-01 1.6E-02 2.5E+00 7.6E-02 Bromoform (Tribromomethane) 75-25-2 8.0E+01 6.9E-01 8.5E+01 2.6E+00 Bromomethane 74-83-9 7.5E+00 3.6E-01 1.7E+02 5.2E+00
Cadmium (soil) 7440-43-9 -- 1.9E+00 -- --
Cadmium (water) 7440-43-9 2.5E-01 -- -- --
Carbon tetrachloride 56-23-5 4.3E-01 7.6E-02 1.6E+01 4.7E-01 Chlordane 12789-03-6 5.9E-04 8.5E-03 2.8E-01 8.3E-03
p-Chloroaniline 106-47-8 3.6E-01 6.7E-03 -- --
Chlorobenzene 108-90-7 2.5E+01 1.4E+00 1.7E+03 5.2E+01
Chloroethane 75-00-3 1.6E+01 1.2E+00 3.5E+05 1.0E+04
Chloroform 67-66-3 8.1E-01 2.3E-02 4.1E+00 1.2E-01
Chloromethane 74-87-3 1.9E+02 1.1E+01 3.1E+03 9.4E+01
2-Chlorophenol 95-57-8 1.8E-01 1.2E-02 6.3E+02 1.9E+01
Chromium (total) 7440-47-3 5.0E+01 1.6E+02 -- --
Chromium III 16065-83-1 1.8E+02 1.2E+05 -- --
Chromium VI 18540-29-9 2.0E-02 3.0E-01 -- --
Chrysene [PAH] 218-01-9 4.9E-02 2.2E+00 -- --
Cobalt 7440-48-4 3.0E+00 2.3E+01 -- --
Copper 7440-50-8 3.1E+00 1.8E+02 -- --
Cyanide 57-12-5 1.0E+00 3.4E-03 2.8E+01 8.3E-01
Dibenz[a,h]anthracene [PAH] 53-70-3 2.5E-02 1.1E-01 -- -- Dibromochloromethane 124-48-1 3.4E+01 3.5E-01 -- --
1,2-dibromo-3-chloropropane 96-12-8 2.8E-02 5.9E-04 5.6E-03 1.7E-04 1,2-Dibromoethane 106-93-4 5.0E-02 5.3E-04 1.6E-01 4.7E-03 1,2-Dichlorobenzene 95-50-1 1.4E+01 1.0E+00 7.0E+03 2.1E+02 1,3-Dichlorobenzene 541-73-1 6.5E+01 6.0E+00 -- --
1,4-Dichlorobenzene 106-46-7 2.6E+00 2.0E-01 8.5E+00 2.6E-01 3,3-Dichlorobenzidine 91-94-1 4.6E-02 2.5E-02 -- --
DDD 72-54-8 8.4E-04 2.7E+00 -- --
DDE 72-55-9 5.9E-04 3.3E-01 9.6E-01 2.9E-02
DDT 50-29-3 5.9E-04 1.1E-03 -- --
1,1-Dichloroethane 75-34-3 5.0E+00 2.0E-01 5.8E+01 1.8E+00 1,2-Dichloroethane 107-06-2 5.0E-01 7.0E-03 3.6E+00 1.1E-01 1,1-Dichloroethene 75-35-4 3.2E+00 5.4E-01 2.4E+03 7.3E+01 cis-1,2-Dichloroethene 156-59-2 6.0E+00 1.9E-01 2.8E+02 8.3E+00 trans-1,2-Dichloroethene 156-60-5 1.0E+01 6.5E-01 2.8E+03 8.3E+01 2,4-Dichlorophenol 120-83-2 3.0E-01 7.5E-03 4.7E+04 1.4E+03 Tier 1 ESLs 1
Based on a generic conceptual site model designed for use at most sites 2 2019 (Rev. 2)
1 of 3 Tier 1 ESL
Chemicals CAS No. Groundwater
(µg/L)
Soil
(mg/kg)
Subslab / Soil Gas
(µg/m3)
Indoor Air
(µg/m3)
Tier 1 ESLs 1
Based on a generic conceptual site model designed for use at most sites 2 2019 (Rev. 2)
1,2-Dichloropropane 78-87-5 2.3E+00 6.5E-02 9.4E+00 2.8E-01 1,3-Dichloropropene 542-75-6 5.0E-01 1.7E-02 5.8E+00 1.8E-01 Dieldrin 60-57-1 1.4E-04 4.6E-04 2.0E-02 6.1E-04
Diethyl phthalate 84-66-2 1.5E+00 2.5E-02 -- --
Dimethyl phthalate 131-11-3 1.5E+00 3.5E-02 -- --
2,4-Dimethylphenol 105-67-9 1.0E+02 8.1E+00 3.3E+01 1.0E+00 2,4-Dinitrophenol 51-28-5 3.9E+01 3.0E+00 -- --
2,4-Dinitrotoluene 121-14-2 2.4E-01 2.3E-02 -- --
1,4-Dioxane 123-91-1 3.8E-01 1.7E-04 1.2E+01 3.6E-01
Dioxin (2,3,7,8-TCDD) 1746-01-6 1.4E-08 4.8E-06 2.5E-06 7.4E-08 Endosulfan 115-29-7 8.7E-03 9.8E-03 -- --
Endrin 72-20-8 2.3E-03 1.1E-03 -- --
Ethylbenzene 100-41-4 3.5E+00 4.3E-01 3.7E+01 1.1E+00
Fluoranthene [PAH] 206-44-0 8.0E+00 6.9E-01 -- --
Fluorene [PAH] 86-73-7 3.9E+00 6.0E+00 -- --
Heptachlor 76-44-8 2.1E-04 1.2E-01 7.2E-02 2.2E-03
Heptachlor epoxide 1024-57-3 1.1E-04 1.8E-04 3.6E-02 1.1E-03 Hexachlorobenzene 118-74-1 7.7E-04 8.0E-04 1.8E-01 5.5E-03 Hexachlorobutadiene 87-68-3 1.4E-01 2.8E-02 4.3E+00 1.3E-01 g-Hexachlorocyclohexane (Lindane) 58-89-9 1.6E-02 7.4E-03 -- -- Hexachloroethane 67-72-1 3.3E-01 1.9E-02 8.5E+00 2.6E-01 Indeno[1,2,3-c,d]pyrene [PAH] 193-39-5 4.9E-02 4.8E-01 -- -- Lead 7439-92-1 2.5E+00 3.2E+01 -- --
Mercury (elemental) 7439-97-6 2.5E-02 1.3E+01 1.0E+00 3.1E-02 Methoxychlor 72-43-5 3.0E-03 1.3E-02 -- --
Methylene chloride 75-09-2 5.0E+00 1.2E-01 3.4E+01 1.0E+00 Methyl ethyl ketone 78-93-3 5.6E+03 6.1E+00 1.7E+05 5.2E+03 Methyl isobutyl ketone 108-10-1 1.2E+02 3.6E-01 1.4E+04 4.2E+02 Methyl mercury 22967-92-6 3.0E-03 3.4E-02 -- --
2-Methylnaphthalene 91-57-6 2.1E+00 8.8E-01 2.3E+03 6.8E+01 Methyl tertiary butyl ether (MTBE) 1634-04-4 5.0E+00 2.8E-02 3.6E+02 1.1E+01 Molybdenum 7439-98-7 1.0E+02 6.9E+00 -- --
Naphthalene [PAH] 91-20-3 1.7E-01 4.2E-02 2.8E+00 8.3E-02 Nickel 7440-02-0 8.2E+00 8.6E+01 -- --
Pentachlorophenol 87-86-5 1.0E+00 1.3E-02 -- --
Perchlorate 7790-98-9 6.0E+00 5.5E+01 -- --
Petroleum - Gasoline -- 1.0E+02 1.0E+02 3.3E+03 1.0E+02 Petroleum - Stoddard Solvent -- 1.0E+02 1.0E+02 1.1E+04 3.3E+02 Petroleum - Jet Fuel -- 1.0E+02 1.0E+02 1.1E+04 3.3E+02 Petroleum - Diesel -- 1.0E+02 2.6E+02 8.9E+03 2.7E+02
Petroleum - HOPs -- 1.0E+02 -- -- --
Petroleum - Motor Oil -- -- 1.6E+03 -- --
Phenanthrene [PAH] 85-01-8 4.6E+00 7.8E+00 1.8E+03 5.5E+01 Phenol 108-95-2 5.0E+00 1.6E-01 5.2E+03 1.6E+02
Polychlorinated biphenyls (PCBs) 1336-36-3 1.7E-04 2.3E-01 1.6E-01 4.9E-03 Pyrene [PAH] 129-00-0 2.0E+00 4.5E+01 -- --
Selenium 7782-49-2 5.0E-01 2.4E+00 -- --
Silver 7440-22-4 1.9E-01 2.5E+01 -- --
Styrene 100-42-5 1.0E+01 9.2E-01 3.1E+04 9.4E+02
tert-Butyl alcohol 75-65-0 1.2E+01 7.5E-02 -- --
1,1,1,2-Tetrachloroethane 630-20-6 5.7E-01 1.7E-02 1.3E+01 3.8E-01 1,1,2,2-Tetrachloroethane 79-34-5 1.0E+00 1.8E-02 1.6E+00 4.8E-02 Tetrachloroethene 127-18-4 6.4E-01 8.0E-02 1.5E+01 4.6E-01 Thallium 7440-28-0 2.0E+00 7.8E-01 -- --
Toluene 108-88-3 4.0E+01 3.2E+00 1.0E+04 3.1E+02
Toxaphene 8001-35-2 2.0E-04 5.1E-01 -- --
1,2,4-Trichlorobenzene 120-82-1 5.0E+00 1.2E+00 7.0E+01 2.1E+00 2 of 3 Tier 1 ESL
Chemicals CAS No. Groundwater
(µg/L)
Soil
(mg/kg)
Subslab / Soil Gas
(µg/m3)
Indoor Air
(µg/m3)
Tier 1 ESLs 1
Based on a generic conceptual site model designed for use at most sites 2 2019 (Rev. 2)
1,1,1-Trichloroethane 71-55-6 6.2E+01 7.0E+00 3.5E+04 1.0E+03 1,1,2-Trichloroethane 79-00-5 5.0E+00 7.6E-02 5.8E+00 1.8E-01 Trichloroethene 79-01-6 1.2E+00 8.5E-02 1.6E+01 4.8E-01 2,4,5-Trichlorophenol 95-95-4 1.1E+01 2.9E+00 -- --
2,4,6-Trichlorophenol 88-06-2 6.3E-01 4.0E-02 1.0E+01 3.0E-01 1,2,3-Trichloropropane 96-18-4 5.0E-03 1.1E-04 1.0E+01 3.1E-01 Vanadium 7440-62-2 1.9E+01 1.8E+01 -- --
Vinyl chloride 75-01-4 8.6E-03 1.5E-03 3.2E-01 9.5E-03
Xylenes 1330-20-7 2.0E+01 2.1E+00 3.5E+03 1.0E+02
Zinc 7440-66-6 8.1E+01 3.4E+02 -- --
Notes:
Abbreviations:
DDD - Dichlorodiphenyldichloroethane
DDE - Dichlorodiphenyldichloroethene
DDT - Dichlorodiphenyltrichloroethane
PAH - Polycyclic aromatic hydrocarbon
TCDD - Tetrachlorodibenzodioxin
2 - Generic Conceptual Site Model - See User's Guide Chapter 2. Input settings are:
Land Use = Residential
Groundwater Use = Drinking Water Resource
MCL Priority over Risk-Based Levels = Yes
Discharge to Surface Water = Saltwater & Freshwater
Vegetation Level = Substantial
Soil Exposure Depth = Shallow
1 - ESLs are developed based on methodologies discussed in the User's Guide. Evaluation of laboratory detection limits and naturally occurring background or ambient concentrations should be independently conducted. See User's Guide Chapter 12 (Additional Considerations) for further information.
HOPs - Hydrocarbon Oxidation Products (biodegradation metabolites and photo-oxidation products of petroleum hydrocarbons). See User's Guide Chapter 4 for further information.
3 of 3 Tier 1 ESL
MCL
Priority1
Tapwater
Cancer
Risk
Tapwater
Non-
cancer
Hazard
Fresh
Water
Ecotox
Saltwater
Ecotox
Seafood
Ingestion
Human
Health
Cancer
Risk
Non-
cancer
Hazard
Cancer
Risk
Non-
cancer
Hazard
Drinking
Water
Non-
Drinking
Water
Acenaphthene [PAH] 83-32-9 5.3E+02 -- 5.3E+02 2.3E+01 1.5E+01 2.7E+03 -- -- -- -- 2.0E+03 2.0E+01 2.0E+02 1.5E+01 Aquatic Habitat Acenaphthylene [PAH] 208-96-8 -- -- -- -- 1.5E+01 -- -- -- -- -- 2.0E+03 -- -- 1.5E+01 Aquatic Habitat Acetone 67-64-1 1.4E+04 -- 1.4E+04 1.5E+03 -- -- -- 2.3E+07 -- 9.7E+07 5.0E+04 2.0E+04 2.0E+05 1.5E+03 Aquatic Habitat Aldrin 309-00-2 9.2E-04 9.2E-04 2.0E-03 3.0E-01 1.3E-01 1.4E-04 3.2E-01 -- 1.4E+00 -- 8.5E+00 1.7E+01 1.7E+02 1.4E-04 Aquatic Habitat Anthracene [PAH] 120-12-7 1.8E+03 -- 1.8E+03 7.3E-01 1.5E+01 1.1E+05 -- -- -- -- 2.2E+01 -- -- 7.3E-01 Aquatic Habitat Antimony 7440-36-0 6.0E+00 -- 1.0E+00 3.0E+01 5.0E+02 4.3E+03 -- -- -- -- 5.0E+04 -- -- 6.0E+00 MCL Arsenic 7440-38-2 1.0E+01 4.0E-03 7.0E-02 1.5E+02 3.6E+01 -- -- -- -- -- 5.0E+04 -- -- 1.0E+01 MCL Barium 7440-39-3 1.0E+03 -- 2.0E+03 -- -- -- -- -- -- -- 5.0E+04 -- -- 1.0E+03 MCL Benzene 71-43-2 1.0E+00 1.5E-01 5.7E+00 4.6E+01 3.5E+02 7.1E+01 4.2E-01 1.4E+01 1.8E+00 5.7E+01 5.0E+04 1.7E+02 2.0E+04 4.2E-01 Vapor Intrusion Benzo[a]anthracene [PAH] 56-55-3 1.7E-02 1.7E-02 -- 2.7E-02 1.5E+01 4.9E-02 1.9E+01 -- 2.3E+02 -- 4.7E+00 -- -- 1.7E-02 Tap Canc-Risk Benzo[b]fluoranthene [PAH] 205-99-2 2.5E-01 2.5E-01 -- -- 1.5E+01 4.9E-02 -- -- -- -- 7.5E-01 -- -- 4.9E-02 Aquatic Habitat Benzo[k]fluoranthene [PAH] 207-08-9 2.5E+00 2.5E+00 -- 3.7E+00 1.5E+01 4.9E-02 -- -- -- -- 4.0E-01 -- -- 4.9E-02 Aquatic Habitat Benzo[g,h,i]perylene [PAH] 191-24-2 -- -- -- 1.0E-01 1.5E+01 -- -- -- -- -- 1.3E-01 -- -- 1.0E-01 Aquatic Habitat Benzo[a]pyrene [PAH] 50-32-8 2.0E-01 7.0E-03 6.0E+00 1.4E-02 1.5E+01 4.9E-02 -- -- -- -- 8.0E-01 -- -- 1.4E-02 Aquatic Habitat Beryllium 7440-41-7 4.0E+00 -- 1.0E+00 2.7E+00 -- -- -- -- -- -- 5.0E+04 -- -- 2.7E+00 Aquatic Habitat 1,1-Biphenyl 92-52-4 8.3E-01 3.8E+00 8.3E-01 1.4E+01 -- -- -- 3.2E+01 -- 1.3E+02 3.8E+03 5.0E-01 5.0E+00 5.0E-01 Odor/Nuis Bis(2-chloroethyl) ether 111-44-4 6.3E-03 6.3E-03 -- 6.1E+01 -- 1.4E+00 5.6E+00 -- 2.5E+01 -- 5.0E+04 3.6E+02 3.6E+03 6.3E-03 Tap Canc-Risk Bis(2-chloro-1-methylethyl) ether 108-60-1 3.6E-01 3.6E-01 7.1E+02 6.1E+01 -- 1.7E+05 9.4E+01 -- 4.1E+02 -- 5.0E+04 3.2E+02 3.2E+03 3.6E-01 Tap Canc-Risk Bis(2-ethylhexyl) phthalate 117-81-7 4.0E+00 5.6E+00 4.0E+02 3.2E+01 -- 5.9E+00 -- -- -- -- 1.4E+02 -- -- 4.0E+00 MCL Boron 7440-42-8 1.0E+03 -- 1.0E+03 1.6E+00 -- -- -- -- -- -- 5.0E+04 -- -- 1.6E+00 Aquatic Habitat Bromodichloromethane 75-27-4 8.0E+01 1.2E-01 3.8E+02 1.1E+03 3.2E+03 -- 8.7E-01 -- 3.8E+00 -- 5.0E+04 -- -- 8.7E-01 Vapor Intrusion Bromoform (Tribromomethane) 75-25-2 8.0E+01 2.9E+00 3.8E+02 1.1E+03 3.2E+03 3.6E+02 1.2E+02 -- 5.1E+02 -- 5.0E+04 5.1E+02 5.1E+03 8.0E+01 MCL Bromomethane 74-83-9 7.5E+00 -- 7.5E+00 1.6E+02 3.2E+03 4.0E+03 -- 1.7E+01 -- 7.3E+01 5.0E+04 -- -- 7.5E+00 Tap NC-Hazard Cadmium (soil) 7440-43-9 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- Cadmium (water) 7440-43-9 5.0E+00 -- 4.0E-02 2.5E-01 9.3E+00 -- -- -- -- -- 5.0E+04 -- -- 2.5E-01 Aquatic Habitat Carbon tetrachloride 56-23-5 5.0E-01 1.0E-01 3.6E+01 2.4E+02 3.2E+03 4.4E+00 4.3E-01 3.8E+01 1.9E+00 1.6E+02 5.0E+04 5.2E+02 5.2E+03 4.3E-01 Vapor Intrusion Chlordane 12789-03-6 1.0E-01 1.3E-02 1.3E+00 4.3E-03 4.0E-03 5.9E-04 4.1E+00 3.7E+02 1.8E+01 1.5E+03 2.8E+01 2.5E+00 2.5E+01 5.9E-04 Aquatic Habitat p-Chloroaniline 106-47-8 3.6E-01 3.6E-01 7.6E+01 5.0E+00 -- -- -- -- -- -- 5.0E+04 -- -- 3.6E-01 Tap Canc-Risk Chlorobenzene 108-90-7 7.0E+01 -- 7.0E+01 2.5E+01 6.5E+01 2.1E+04 -- 4.0E+02 -- 1.7E+03 5.0E+04 5.0E+01 5.0E+02 2.5E+01 Aquatic Habitat Chloroethane 75-00-3 2.1E+04 -- 2.1E+04 -- -- -- -- 2.3E+04 -- 9.7E+04 5.0E+04 1.6E+01 1.6E+02 1.6E+01 Odor/Nuis Chloroform 67-66-3 8.0E+01 2.2E-01 9.7E+01 6.2E+02 3.2E+03 -- 8.1E-01 6.8E+02 3.6E+00 2.9E+03 5.0E+04 2.4E+03 2.4E+04 8.1E-01 Vapor Intrusion Chloromethane 74-87-3 1.9E+02 -- 1.9E+02 1.1E+03 3.2E+03 -- -- 2.6E+02 -- 1.1E+03 5.0E+04 -- -- 1.9E+02 Tap NC-Hazard 2-Chlorophenol 95-57-8 9.1E+01 -- 9.1E+01 4.4E+02 -- 4.0E+02 -- -- -- -- 5.0E+04 1.8E-01 1.8E+00 1.8E-01 Odor/Nuis Chromium (total) 7440-47-3 5.0E+01 -- -- 1.8E+02 -- -- -- -- -- -- 5.0E+04 -- -- 5.0E+01 MCL Chromium III 16065-83-1 2.2E+04 -- 2.2E+04 1.8E+02 1.0E+03 -- -- -- -- -- 5.0E+04 -- -- 1.8E+02 Aquatic Habitat Chromium VI 18540-29-9 2.0E-02 2.0E-02 4.4E+01 1.1E+01 5.0E+01 -- -- -- -- -- 5.0E+04 -- -- 2.0E-02 Tap Canc-Risk Basis
2019 (Rev. 2)
Chemicals CAS No.
Residential
Summary of Groundwater ESLs (µg/L)
Aquatic Habitat Goal Levels
(Table GW-2)
Direct Exposure
Human Health Risk Levels
(Table GW-1)
Odor Nuisance
Levels
(Table GW-5)Gross
Contam-
ination
Levels
(GW-4)
Groundwater Vapor Intrusion Human Health
Risk Levels
(Table GW-3)
Commercial/Industrial GW
Tier 1
ESL
1 of 4 GW Summary
MCL
Priority1
Tapwater
Cancer
Risk
Tapwater
Non-
cancer
Hazard
Fresh
Water
Ecotox
Saltwater
Ecotox
Seafood
Ingestion
Human
Health
Cancer
Risk
Non-
cancer
Hazard
Cancer
Risk
Non-
cancer
Hazard
Drinking
Water
Non-
Drinking
Water
Basis
2019 (Rev. 2)
Chemicals CAS No.
Residential
Summary of Groundwater ESLs (µg/L)
Aquatic Habitat Goal Levels
(Table GW-2)
Direct Exposure
Human Health Risk Levels
(Table GW-1)
Odor Nuisance
Levels
(Table GW-5)Gross
Contam-
ination
Levels
(GW-4)
Groundwater Vapor Intrusion Human Health
Risk Levels
(Table GW-3)
Commercial/Industrial GW
Tier 1
ESL
Chrysene [PAH] 218-01-9 2.5E+01 2.5E+01 -- 3.5E-01 1.5E+01 4.9E-02 -- -- -- -- 1.0E+00 -- -- 4.9E-02 Aquatic Habitat Cobalt 7440-48-4 6.0E+00 -- 6.0E+00 3.0E+00 -- -- -- -- -- -- 5.0E+04 -- -- 3.0E+00 Aquatic Habitat Copper 7440-50-8 1.0E+03 -- 3.0E+02 9.0E+00 3.1E+00 -- -- -- -- -- 5.0E+04 1.0E+03 -- 3.1E+00 Aquatic Habitat Cyanide 57-12-5 1.5E+02 -- 1.5E+00 5.2E+00 1.0E+00 2.2E+05 -- 2.0E+02 -- 8.3E+02 5.0E+04 1.7E+02 1.7E+03 1.0E+00 Aquatic Habitat Dibenz[a,h]anthracene [PAH] 53-70-3 2.5E-02 2.5E-02 -- 7.5E+00 1.5E+01 4.9E-02 -- -- -- -- 1.3E+00 -- -- 2.5E-02 Tap Canc-Risk Dibromochloromethane 124-48-1 8.0E+01 8.7E-01 3.8E+02 1.1E+03 3.2E+03 3.4E+01 -- -- -- -- 5.0E+04 -- -- 3.4E+01 Aquatic Habitat 1,2-dibromo-3-chloropropane 96-12-8 2.0E-01 3.0E-04 3.7E-01 -- -- -- 2.8E-02 3.5E+01 3.4E-01 1.5E+02 5.0E+04 1.0E+01 1.0E+02 2.8E-02 Vapor Intrusion 1,2-Dibromoethane 106-93-4 5.0E-02 7.5E-03 1.7E+00 1.4E+03 -- -- 1.7E-01 3.1E+01 7.6E-01 1.3E+02 5.0E+04 -- -- 5.0E-02 MCL 1,2-Dichlorobenzene 95-50-1 1.0E+02 -- 3.0E+02 1.4E+01 6.5E+01 1.7E+04 -- 2.7E+03 -- 1.1E+04 5.0E+04 1.0E+02 1.0E+02 1.4E+01 Aquatic Habitat 1,3-Dichlorobenzene 541-73-1 6.0E+02 -- 6.0E+02 7.1E+01 6.5E+01 2.6E+03 -- -- -- -- 5.0E+04 -- -- 6.5E+01 Aquatic Habitat 1,4-Dichlorobenzene 106-46-7 5.0E+00 4.8E-01 5.7E+02 1.5E+01 6.5E+01 2.6E+03 2.6E+00 8.4E+03 1.1E+01 3.5E+04 4.1E+04 5.0E+00 1.1E+02 2.6E+00 Vapor Intrusion 3,3-Dichlorobenzidine 91-94-1 4.6E-02 4.6E-02 -- 2.5E+02 -- 7.7E-02 -- -- -- -- 1.6E+03 -- -- 4.6E-02 Tap Canc-Risk DDD 72-54-8 3.1E-02 3.1E-02 -- 1.0E-03 1.0E-03 8.4E-04 -- -- -- -- 4.5E+01 -- -- 8.4E-04 Aquatic Habitat DDE 72-55-9 4.6E-02 4.6E-02 -- 1.0E-03 1.0E-03 5.9E-04 1.7E+01 -- 7.4E+01 -- 2.0E+01 -- -- 5.9E-04 Aquatic Habitat DDT 50-29-3 2.3E-01 2.3E-01 1.0E+01 1.0E-03 1.0E-03 5.9E-04 -- -- -- -- 2.8E+00 3.5E+02 3.5E+03 5.9E-04 Aquatic Habitat 1,1-Dichloroethane 75-34-3 5.0E+00 2.7E+00 3.8E+03 4.7E+01 -- -- 7.6E+00 -- 3.3E+01 -- 5.0E+04 -- -- 5.0E+00 MCL 1,2-Dichloroethane 107-06-2 5.0E-01 1.7E-01 1.3E+01 1.0E+04 1.1E+04 9.9E+01 2.2E+00 1.5E+02 9.8E+00 6.4E+02 5.0E+04 7.0E+03 2.0E+05 5.0E-01 MCL 1,1-Dichloroethene 75-35-4 6.0E+00 -- 1.0E+01 2.5E+01 2.2E+04 3.2E+00 -- 6.6E+01 -- 2.8E+02 5.0E+04 1.5E+03 1.5E+04 3.2E+00 Aquatic Habitat cis-1,2-Dichloroethene 156-59-2 6.0E+00 -- 1.1E+01 5.9E+02 2.2E+04 -- -- 4.9E+01 -- 2.1E+02 5.0E+04 -- -- 6.0E+00 MCL trans-1,2-Dichloroethene 156-60-5 1.0E+01 -- 5.0E+01 5.9E+02 2.2E+04 1.4E+05 -- 2.2E+02 -- 9.2E+02 5.0E+04 2.6E+02 2.6E+03 1.0E+01 MCL 2,4-Dichlorophenol 120-83-2 4.6E+01 -- 4.6E+01 1.8E+02 -- 7.9E+02 -- -- -- -- 5.0E+04 3.0E-01 3.0E+00 3.0E-01 Odor/Nuis 1,2-Dichloropropane 78-87-5 5.0E+00 4.4E-01 8.3E+00 2.9E+03 1.5E+03 3.9E+01 2.3E+00 3.5E+01 1.0E+01 1.5E+02 5.0E+04 1.0E+01 1.0E+02 2.3E+00 Vapor Intrusion 1,3-Dichloropropene 542-75-6 5.0E-01 2.0E-01 3.9E+01 1.2E+02 7.9E+01 1.7E+03 1.2E+00 1.4E+02 5.1E+00 5.8E+02 5.0E+04 -- -- 5.0E-01 MCL Dieldrin 60-57-1 7.1E-04 7.1E-04 2.0E-03 5.6E-02 1.9E-03 1.4E-04 1.5E+00 -- 6.5E+00 -- 1.0E+02 4.1E+01 4.1E+02 1.4E-04 Aquatic Habitat Diethyl phthalate 84-66-2 1.5E+04 -- 1.5E+04 1.5E+00 1.7E+00 1.2E+05 -- -- -- -- 5.0E+04 -- -- 1.5E+00 Aquatic Habitat Dimethyl phthalate 131-11-3 -- -- -- 1.5E+00 1.7E+00 2.9E+06 -- -- -- -- 5.0E+04 -- -- 1.5E+00 Aquatic Habitat 2,4-Dimethylphenol 105-67-9 1.0E+02 -- 1.0E+02 5.3E+02 1.1E+02 2.3E+03 -- -- -- -- 5.0E+04 4.0E+02 4.0E+03 1.0E+02 Tap NC-Hazard 2,4-Dinitrophenol 51-28-5 3.9E+01 -- 3.9E+01 7.5E+01 4.9E+02 1.4E+04 -- -- -- -- 5.0E+04 -- -- 3.9E+01 Tap NC-Hazard 2,4-Dinitrotoluene 121-14-2 2.4E-01 2.4E-01 3.8E+01 1.2E+02 1.9E+02 9.1E+00 -- -- -- -- 5.0E+04 -- -- 2.4E-01 Tap Canc-Risk 1,4-Dioxane 123-91-1 3.8E-01 3.8E-01 5.7E+01 3.4E+05 5.0E+05 -- 1.8E+03 1.6E+05 8.0E+03 6.6E+05 5.0E+04 2.3E+05 -- 3.8E-01 Tap Canc-Risk Dioxin (2,3,7,8-TCDD) 1746-01-6 3.0E-05 1.2E-07 1.2E-05 5.0E-06 -- 1.4E-08 3.7E-05 2.1E-02 1.6E-04 8.8E-02 1.0E-01 -- -- 1.4E-08 Aquatic Habitat Endosulfan 115-29-7 1.0E+02 -- 1.0E+02 5.6E-02 8.7E-03 2.4E+02 -- -- -- -- 1.7E+02 -- -- 8.7E-03 Aquatic Habitat Endrin 72-20-8 2.0E+00 -- 3.0E-01 3.6E-02 2.3E-03 8.1E-01 -- -- -- -- 1.3E+02 4.1E+01 4.1E+02 2.3E-03 Aquatic Habitat Ethylbenzene 100-41-4 3.0E+01 1.5E+00 3.0E+02 2.9E+02 4.3E+01 2.9E+04 3.5E+00 3.3E+03 1.5E+01 1.4E+04 5.0E+04 3.0E+01 3.0E+02 3.5E+00 Vapor Intrusion Fluoranthene [PAH] 206-44-0 8.0E+02 -- 8.0E+02 8.1E+00 8.0E+00 3.7E+02 -- -- -- -- 1.3E+02 -- -- 8.0E+00 Aquatic Habitat Fluorene [PAH] 86-73-7 2.9E+02 -- 2.9E+02 3.9E+00 1.5E+01 1.4E+04 -- -- -- -- 8.5E+02 -- -- 3.9E+00 Aquatic Habitat 2 of 4 GW Summary
MCL
Priority1
Tapwater
Cancer
Risk
Tapwater
Non-
cancer
Hazard
Fresh
Water
Ecotox
Saltwater
Ecotox
Seafood
Ingestion
Human
Health
Cancer
Risk
Non-
cancer
Hazard
Cancer
Risk
Non-
cancer
Hazard
Drinking
Water
Non-
Drinking
Water
Basis
2019 (Rev. 2)
Chemicals CAS No.
Residential
Summary of Groundwater ESLs (µg/L)
Aquatic Habitat Goal Levels
(Table GW-2)
Direct Exposure
Human Health Risk Levels
(Table GW-1)
Odor Nuisance
Levels
(Table GW-5)Gross
Contam-
ination
Levels
(GW-4)
Groundwater Vapor Intrusion Human Health
Risk Levels
(Table GW-3)
Commercial/Industrial GW
Tier 1
ESL
Heptachlor 76-44-8 1.0E-02 1.4E-03 1.3E+00 3.8E-03 3.6E-03 2.1E-04 1.8E-01 -- 7.9E-01 -- 9.0E+01 2.0E+01 2.0E+02 2.1E-04 Aquatic Habitat Heptachlor epoxide 1024-57-3 1.0E-02 1.4E-03 1.2E-01 3.8E-03 3.6E-03 1.1E-04 1.3E+00 -- 5.5E+00 -- 1.0E+02 -- -- 1.1E-04 Aquatic Habitat Hexachlorobenzene 118-74-1 1.0E+00 8.8E-03 1.6E+01 3.7E+00 6.5E+01 7.7E-04 7.9E-02 -- 3.4E-01 -- 3.1E+00 3.0E+03 3.0E+04 7.7E-04 Aquatic Habitat Hexachlorobutadiene 87-68-3 1.4E-01 1.4E-01 6.5E+00 4.7E+00 3.2E+00 5.0E+01 3.0E-01 -- 1.3E+00 -- 1.6E+03 6.0E+00 6.0E+01 1.4E-01 Tap Canc-Risk g-Hexachlorocyclohexane (Lindane) 58-89-9 2.0E-01 3.2E-02 3.6E+00 8.0E-02 1.6E-02 6.3E-02 -- -- -- -- 3.7E+03 1.2E+04 1.2E+05 1.6E-02 Aquatic Habitat Hexachloroethane 67-72-1 3.3E-01 3.3E-01 6.2E+00 1.2E+01 9.4E+01 8.9E+00 1.6E+00 2.0E+02 7.0E+00 8.2E+02 2.5E+04 1.0E+01 1.0E+02 3.3E-01 Tap Canc-Risk Indeno[1,2,3-c,d]pyrene [PAH] 193-39-5 2.5E-01 2.5E-01 -- -- 1.5E+01 4.9E-02 -- -- -- -- 9.5E-02 -- -- 4.9E-02 Aquatic Habitat Lead 7439-92-1 1.5E+01 9.2E+00 2.0E-01 2.5E+00 8.1E+00 -- -- -- -- -- 5.0E+04 -- -- 2.5E+00 Aquatic Habitat Mercury (elemental) 7439-97-6 2.0E+00 -- 6.1E-02 2.5E-02 2.5E-02 5.1E-02 -- 8.9E-02 -- 3.8E-01 3.0E+01 -- -- 2.5E-02 Aquatic Habitat Methoxychlor 72-43-5 3.0E+01 -- 9.0E-02 1.9E-02 3.0E-03 -- -- -- -- -- 5.0E+01 4.7E+03 4.7E+04 3.0E-03 Aquatic Habitat Methylene chloride 75-09-2 5.0E+00 9.3E-01 1.0E+02 2.2E+03 3.2E+03 1.6E+03 7.8E+00 3.2E+03 9.4E+01 1.3E+04 5.0E+04 9.1E+03 9.1E+04 5.0E+00 MCL Methyl ethyl ketone 78-93-3 5.6E+03 -- 5.6E+03 1.4E+04 -- -- -- 2.3E+06 -- 9.5E+06 5.0E+04 8.4E+03 8.4E+04 5.6E+03 Tap NC-Hazard Methyl isobutyl ketone 108-10-1 1.2E+02 -- 1.2E+02 1.7E+02 -- -- -- 5.6E+05 -- 2.3E+06 5.0E+04 1.3E+03 1.3E+04 1.2E+02 Tap NC-Hazard Methyl mercury 22967-92-6 2.0E+00 -- 2.0E+00 3.0E-03 -- -- -- -- -- -- 5.0E+04 -- -- 3.0E-03 Aquatic Habitat 2-Methylnaphthalene 91-57-6 3.6E+01 -- 3.6E+01 2.1E+00 3.0E+01 -- -- -- -- -- 1.3E+04 1.0E+01 1.0E+02 2.1E+00 Aquatic Habitat Methyl tertiary butyl ether (MTBE) 1634-04-4 5.0E+00 1.3E+01 6.3E+03 6.6E+04 8.0E+03 -- 4.5E+02 1.3E+05 2.0E+03 5.5E+05 5.0E+04 5.0E+00 1.8E+03 5.0E+00 Odor/Nuis Molybdenum 7439-98-7 1.0E+02 -- 1.0E+02 2.4E+02 -- -- -- -- -- -- 5.0E+04 -- -- 1.0E+02 Tap NC-Hazard Naphthalene [PAH] 91-20-3 1.7E-01 1.7E-01 6.1E+00 2.4E+01 1.5E+01 -- 4.6E+00 1.7E+02 2.0E+01 7.3E+02 1.6E+04 2.1E+01 2.1E+02 1.7E-01 Tap Canc-Risk Nickel 7440-02-0 1.0E+02 1.2E+01 2.2E+02 5.2E+01 8.2E+00 4.6E+03 -- -- -- -- 5.0E+04 -- -- 8.2E+00 Aquatic Habitat Pentachlorophenol 87-86-5 1.0E+00 4.0E-02 2.3E+01 1.5E+01 7.9E+00 8.2E+00 -- -- -- -- 7.0E+03 3.0E+01 5.9E+03 1.0E+00 MCL Perchlorate 7790-98-9 6.0E+00 -- 1.0E+00 6.0E+02 -- -- -- -- -- -- 5.0E+04 -- -- 6.0E+00 MCL Petroleum - Gasoline -- 7.6E+02 -- 7.6E+02 4.4E+02 3.7E+03 -- -- -- -- -- 5.0E+04 1.0E+02 5.0E+03 1.0E+02 Odor/Nuis Petroleum - Stoddard Solvent -- 2.1E+02 -- 2.1E+02 6.4E+02 6.4E+02 -- -- -- -- -- 2.5E+03 1.0E+02 5.0E+03 1.0E+02 Odor/Nuis Petroleum - Jet Fuel -- 2.1E+02 -- 2.1E+02 6.4E+02 6.4E+02 -- -- -- -- -- 2.5E+03 1.0E+02 5.0E+03 1.0E+02 Odor/Nuis Petroleum - Diesel -- 2.0E+02 -- 2.0E+02 6.4E+02 6.4E+02 -- -- -- -- -- 2.5E+03 1.0E+02 5.0E+03 1.0E+02 Odor/Nuis Petroleum - HOPs -- 4.1E+02 -- 4.1E+02 5.1E+02 5.1E+02 -- -- -- -- -- 5.0E+04 1.0E+02 5.0E+03 1.0E+02 Odor/Nuis Petroleum - Motor Oil -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- Phenanthrene [PAH] 85-01-8 -- -- -- 6.3E+00 4.6E+00 -- -- -- -- -- 4.1E+02 1.0E+03 1.0E+04 4.6E+00 Aquatic Habitat Phenol 108-95-2 4.2E+03 -- 4.2E+03 1.3E+03 5.8E+02 4.6E+06 -- -- -- -- 5.0E+04 5.0E+00 7.9E+04 5.0E+00 Odor/Nuis Polychlorinated biphenyls (PCBs) 1336-36-3 5.0E-01 1.9E-03 -- 1.4E-02 3.0E-02 1.7E-04 2.9E-01 -- 1.3E+00 -- 3.5E+02 -- -- 1.7E-04 Aquatic Habitat Pyrene [PAH] 129-00-0 1.2E+02 -- 1.2E+02 2.0E+00 1.5E+01 1.1E+04 -- -- -- -- 7.0E+01 -- -- 2.0E+00 Aquatic Habitat Selenium 7782-49-2 5.0E+01 -- 3.0E+01 5.0E+00 5.0E-01 -- -- -- -- -- 5.0E+04 -- -- 5.0E-01 Aquatic Habitat Silver 7440-22-4 1.0E+02 -- 9.4E+01 3.4E+00 1.9E-01 -- -- -- -- -- 5.0E+04 1.0E+02 -- 1.9E-01 Aquatic Habitat Styrene 100-42-5 1.0E+01 5.0E-01 1.1E+03 -- -- -- -- 8.5E+03 -- 3.6E+04 5.0E+04 1.0E+01 1.1E+02 1.0E+01 Odor/Nuis tert-Butyl alcohol 75-65-0 1.2E+01 1.2E+01 -- 1.8E+04 -- -- -- -- -- -- 5.0E+04 -- -- 1.2E+01 Tap Canc-Risk 1,1,1,2-Tetrachloroethane 630-20-6 5.7E-01 5.7E-01 4.8E+02 9.3E+02 -- -- 3.8E+00 -- 1.7E+01 -- 5.0E+04 -- -- 5.7E-01 Tap Canc-Risk 3 of 4 GW Summary
MCL
Priority1
Tapwater
Cancer
Risk
Tapwater
Non-
cancer
Hazard
Fresh
Water
Ecotox
Saltwater
Ecotox
Seafood
Ingestion
Human
Health
Cancer
Risk
Non-
cancer
Hazard
Cancer
Risk
Non-
cancer
Hazard
Drinking
Water
Non-
Drinking
Water
Basis
2019 (Rev. 2)
Chemicals CAS No.
Residential
Summary of Groundwater ESLs (µg/L)
Aquatic Habitat Goal Levels
(Table GW-2)
Direct Exposure
Human Health Risk Levels
(Table GW-1)
Odor Nuisance
Levels
(Table GW-5)Gross
Contam-
ination
Levels
(GW-4)
Groundwater Vapor Intrusion Human Health
Risk Levels
(Table GW-3)
Commercial/Industrial GW
Tier 1
ESL
1,1,2,2-Tetrachloroethane 79-34-5 1.0E+00 7.6E-02 3.6E+02 4.2E+02 9.0E+02 1.1E+01 3.2E+00 -- 1.4E+01 -- 5.0E+04 5.0E+02 5.0E+03 1.0E+00 MCL Tetrachloroethene 127-18-4 5.0E+00 6.0E-02 4.1E+01 1.2E+02 2.3E+02 8.9E+00 6.4E-01 5.8E+01 2.8E+00 2.4E+02 5.0E+04 1.7E+02 3.0E+03 6.4E-01 Vapor Intrusion Thallium 7440-28-0 2.0E+00 -- 1.0E-01 2.0E+01 2.1E+02 6.3E+00 -- -- -- -- 5.0E+04 -- -- 2.0E+00 MCL Toluene 108-88-3 4.0E+01 -- 1.5E+02 1.3E+02 2.5E+03 2.0E+05 -- 1.2E+03 -- 4.9E+03 5.0E+04 4.0E+01 4.0E+02 4.0E+01 Odor/Nuis Toxaphene 8001-35-2 3.0E+00 3.0E-02 -- 2.0E-04 2.0E-04 7.5E-04 -- -- -- -- 2.8E+02 1.4E+02 1.4E+02 2.0E-04 Aquatic Habitat 1,2,4-Trichlorobenzene 120-82-1 5.0E+00 1.1E+00 4.0E+00 2.5E+01 6.5E+01 -- -- 3.6E+01 -- 1.5E+02 2.5E+04 3.0E+03 3.0E+04 5.0E+00 MCL 1,1,1-Trichloroethane 71-55-6 2.0E+02 -- 1.0E+03 6.2E+01 3.1E+03 -- -- 1.5E+03 -- 6.3E+03 5.0E+04 9.7E+02 5.0E+05 6.2E+01 Aquatic Habitat 1,1,2-Trichloroethane 79-00-5 5.0E+00 2.8E-01 4.1E-01 4.7E+03 -- 4.2E+01 5.2E+00 6.1E+00 2.3E+01 2.6E+01 5.0E+04 -- -- 5.0E+00 MCL Trichloroethene 79-01-6 5.0E+00 4.9E-01 2.8E+00 3.6E+02 2.0E+02 8.1E+01 1.2E+00 5.2E+00 7.5E+00 2.2E+01 5.0E+04 3.1E+02 1.0E+05 1.2E+00 Vapor Intrusion 2,4,5-Trichlorophenol 95-95-4 -- -- 1.2E+03 6.3E+01 1.1E+01 -- -- -- -- -- 5.0E+04 2.0E+02 2.0E+03 1.1E+01 Aquatic Habitat 2,4,6-Trichlorophenol 88-06-2 6.3E-01 6.3E-01 1.2E+01 4.9E+02 -- 6.5E+00 -- -- -- -- 5.0E+04 1.0E+02 1.0E+03 6.3E-01 Tap Canc-Risk 1,2,3-Trichloropropane 96-18-4 5.0E-03 7.0E-04 6.2E-01 2.7E+03 6.0E-03 -- -- 2.2E+01 -- 9.4E+01 5.0E+04 -- -- 5.0E-03 MCL Vanadium 7440-62-2 -- -- 5.0E+01 1.9E+01 -- -- -- -- -- -- 5.0E+04 -- -- 1.9E+01 Aquatic Habitat Vinyl chloride 75-01-4 5.0E-01 9.7E-03 4.4E+01 7.8E+02 -- 5.3E+02 8.6E-03 9.5E+01 1.4E-01 4.0E+02 5.0E+04 3.4E+03 3.4E+04 8.6E-03 Vapor Intrusion Xylenes 1330-20-7 2.0E+01 -- 1.9E+02 -- 1.0E+02 -- -- 3.9E+02 -- 1.6E+03 5.0E+04 2.0E+01 5.3E+03 2.0E+01 Odor/Nuis Zinc 7440-66-6 5.0E+03 -- 6.0E+03 1.2E+02 8.1E+01 -- -- -- -- -- 5.0E+04 5.0E+03 -- 8.1E+01 Aquatic Habitat Notes:
1 - "MCL Priority" lists all available MCL values. If no MCL values are available, the lower of the cancer and noncancer tapwater direct exposure levels is listed. - Cadium (Soil) - No groundwater values are listed since groundwater ESLs only apply to dissolved chemicals.
Abbreviations:
Canc - Cancer
Contam - Contamination
DDD - Dichlorodiphenyldichloroethane
DDE - Dichlorodiphenyldichloroethene
DDT - Dichlorodiphenyltrichloroethane
HOPs - Hydrocarbon Oxidation Products (biodegradation metabolites and photo-oxidation products of petroleum hydrocarbons). See User's Guide Chapter 4 for further information.
MCL - Maximum Contaminant Level
NC - Noncancer
Odor/Nuis - Odor Nuisance
PAH - Polycyclic aromatic hydrocarbon
Tap - Tapwater
TCDD - Tetrachlorodibenzodioxin
- Petroleum Motor Oil is composed of large carbon chain compounds (C24-C36+) having negligible solubility. Detections in water samples typically are Petroleum HOPs, nonaqueous phase liquid (NAPL or free product), contaminated sediment entrained in the water sample, or naturally occurring compounds. Review the chromatograms to help determine the nature of the compounds being detected. See User's Guide Chapter 4. 4 of 4 GW Summary
Significantly
Vegetated Area
Minimally
Vegetated Area
Cancer
Risk
Non-
cancer
Hazard
Cancer
Risk
Non-
cancer
Hazard
Cancer
Risk
Non-
cancer
Hazard
Examples:
Parkland or
single family
homes
with yards
Examples:
High density
residential or
commercial/
industrial areas
Acenaphthene [PAH] 83-32-9 -- 3.6E+03 -- 4.5E+04 -- 1.0E+04 6.6E+03 4.6E+04 1.2E+01 1.2E+01 1.2E+02 1.0E+03 2.5E+03 2.5E+03 1.2E+01 Leaching Acenaphthylene [PAH] 208-96-8 -- -- -- -- -- -- -- -- 6.4E+00 6.4E+00 5.9E+01 5.0E+02 1.0E+03 1.0E+03 6.4E+00 Leaching Acetone 67-64-1 -- 6.1E+04 -- 6.7E+05 -- 2.7E+05 5.6E+01 5.6E+01 9.2E-01 9.2E-01 1.1E+05 5.0E+02 1.0E+03 1.0E+03 9.2E-01 Leaching Aldrin 309-00-2 3.5E-02 2.1E+00 1.5E-01 2.9E+01 1.0E+00 7.4E+00 2.4E-03 1.0E-01 8.4E+00 8.4E+00 8.4E+00 1.0E+03 2.5E+03 2.5E+03 2.4E-03 Terr Habitat Anthracene [PAH] 120-12-7 -- 1.8E+04 -- 2.3E+05 -- 5.0E+04 3.1E+00 4.0E+01 1.9E+00 1.9E+00 4.1E+00 5.0E+02 1.0E+03 1.0E+03 1.9E+00 Leaching Antimony 7440-36-0 -- 1.1E+01 -- 1.6E+02 -- 5.0E+01 2.5E+01 5.0E+01 -- -- -- -- -- -- 1.1E+01 NC-Hazard Arsenic 7440-38-2 6.7E-02 2.6E-01 3.1E-01 3.6E+00 2.0E+00 9.8E-01 2.5E+01 5.0E+01 -- -- -- -- -- -- 6.7E-02 Canc-Risk Barium 7440-39-3 -- 1.5E+04 -- 2.2E+05 -- 3.0E+03 3.9E+02 6.7E+02 -- -- -- -- -- -- 3.9E+02 Terr Habitat Benzene 71-43-2 3.3E-01 1.1E+01 1.4E+00 4.7E+01 3.3E+01 4.5E+01 6.0E+01 3.1E+02 2.5E-02 2.5E-02 1.9E+03 5.0E+02 1.0E+03 1.0E+03 2.5E-02 Leaching Benzo[a]anthracene [PAH] 56-55-3 1.1E+00 -- 2.0E+01 -- 1.1E+02 -- 6.3E-01 1.3E+00 1.0E+01 1.0E+01 1.0E+01 5.0E+02 1.0E+03 1.0E+03 6.3E-01 Terr Habitat Benzo[a]pyrene [PAH] 50-32-8 1.1E-01 1.8E+01 2.1E+00 2.2E+02 1.1E+01 1.0E+01 2.5E+01 9.0E+01 5.7E+00 5.7E+00 5.7E+00 5.0E+02 1.0E+03 1.0E+03 1.1E-01 Canc-Risk Benzo[b]fluoranthene [PAH] 205-99-2 1.1E+00 -- 2.1E+01 -- 1.1E+02 -- -- -- 5.4E+00 7.5E+01 5.4E+00 5.0E+02 1.0E+03 1.0E+03 1.1E+00 Canc-Risk Benzo[g,h,i]perylene [PAH] 191-24-2 -- -- -- -- -- -- 8.3E+00 1.7E+01 2.7E+01 2.7E+01 2.5E+00 5.0E+02 1.0E+03 1.0E+03 2.5E+00 Gross Contam Benzo[k]fluoranthene [PAH] 207-08-9 1.1E+01 -- 2.1E+02 -- 9.1E+02 -- 9.5E+00 1.9E+01 4.8E+00 3.9E+01 2.8E+00 5.0E+02 1.0E+03 1.0E+03 2.8E+00 Gross Contam Beryllium 7440-41-7 1.6E+03 1.6E+01 6.9E+03 2.3E+02 1.8E+02 2.7E+01 5.0E+00 1.0E+01 -- -- -- -- -- -- 5.0E+00 Terr Habitat 1,1-Biphenyl 92-52-4 6.8E+01 4.7E+01 2.9E+02 2.0E+02 1.7E+03 1.8E+02 -- -- 4.2E-01 4.2E+00 2.3E+02 5.0E+02 1.0E+03 1.0E+03 4.2E-01 Leaching Bis(2-chloroethyl) ether 111-44-4 1.0E-01 -- 4.7E-01 -- 6.4E+00 -- -- -- 3.4E-05 3.1E-02 5.0E+03 5.0E+02 1.0E+03 1.0E+03 3.4E-05 Leaching Bis(2-chloro-1-methylethyl) ether 108-60-1 5.0E+00 3.1E+03 2.3E+01 4.7E+04 2.7E+02 1.4E+04 -- -- 5.1E-03 8.7E-01 1.0E+03 5.0E+02 1.0E+03 1.0E+03 5.1E-03 Leaching Bis(2-ethylhexyl) phthalate 117-81-7 3.9E+01 1.3E+03 1.6E+02 1.6E+04 9.5E+02 3.8E+03 8.0E-01 3.5E+01 1.9E+02 6.4E+02 1.9E+02 5.0E+02 1.0E+03 1.0E+03 8.0E-01 Terr Habitat Boron 7440-42-8 -- 1.6E+04 -- 2.3E+05 -- 4.5E+04 1.2E+02 1.2E+02 -- -- -- -- -- -- 1.2E+02 Terr Habitat Bromodichloromethane 75-27-4 2.9E-01 1.6E+03 1.3E+00 2.3E+04 2.8E+01 7.1E+03 -- -- 1.6E-02 1.6E-02 9.3E+02 1.0E+03 2.5E+03 2.5E+03 1.6E-02 Leaching Bromoform (Tribromomethane) 75-25-2 1.8E+01 1.6E+03 8.0E+01 2.3E+04 1.2E+03 7.1E+03 -- -- 6.9E-01 1.0E+00 9.2E+02 5.0E+02 1.0E+03 1.0E+03 6.9E-01 Leaching Bromomethane 74-83-9 -- 6.9E+00 -- 3.0E+01 -- 2.9E+01 -- -- 3.6E-01 8.3E-01 3.5E+03 5.0E+02 1.0E+03 1.0E+03 3.6E-01 Leaching Cadmium (soil) 7440-43-9 9.1E+02 7.8E+01 4.0E+03 1.1E+03 1.1E+02 5.1E+01 1.9E+00 1.9E+00 -- -- -- -- -- -- 1.9E+00 Terr Habitat Cadmium (water) 7440-43-9 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- Carbon tetrachloride 56-23-5 6.2E-01 5.3E+01 2.7E+00 2.5E+02 5.3E+01 2.2E+02 7.3E+00 1.5E+01 7.6E-02 7.6E-02 4.5E+02 5.0E+02 1.0E+03 1.0E+03 7.6E-02 Leaching Chlordane 12789-03-6 4.8E-01 3.6E+01 2.2E+00 5.0E+02 1.4E+01 1.3E+02 8.5E-03 8.5E-03 2.3E+01 2.3E+01 2.3E+01 1.0E+03 2.5E+03 2.5E+03 8.5E-03 Terr Habitat p-Chloroaniline 106-47-8 3.5E+00 3.1E+02 1.6E+01 4.7E+03 1.2E+02 1.4E+03 2.5E+01 5.0E+01 6.7E-03 9.1E-02 3.0E+03 5.0E+02 1.0E+03 1.0E+03 6.7E-03 Leaching Chlorobenzene 108-90-7 -- 2.7E+02 -- 1.3E+03 -- 1.2E+03 7.5E+00 1.5E+01 1.4E+00 1.4E+00 7.5E+02 5.0E+02 1.0E+03 1.0E+03 1.4E+00 Leaching Chloroethane 75-00-3 -- 1.4E+04 -- 5.9E+04 -- 5.9E+04 -- -- 1.2E+00 1.2E+01 2.1E+03 5.0E+02 1.0E+03 1.0E+03 1.2E+00 Leaching Chloroform 67-66-3 3.2E-01 2.0E+02 1.4E+00 1.0E+03 3.4E+01 8.6E+02 4.3E+01 8.5E+01 2.3E-02 2.3E-02 2.6E+03 5.0E+02 1.0E+03 1.0E+03 2.3E-02 Leaching Chloromethane 74-87-3 -- 1.1E+02 -- 4.7E+02 -- 4.7E+02 -- -- 1.1E+01 1.5E+01 1.3E+03 1.0E+02 5.0E+02 5.0E+02 1.1E+01 Leaching 2-Chlorophenol 95-57-8 -- 3.9E+02 -- 5.8E+03 -- 1.8E+03 2.0E+00 3.9E+00 1.2E-02 1.2E-01 2.7E+04 1.0E+02 5.0E+02 5.0E+02 1.2E-02 Leaching Chromium (total) 7440-47-3 -- -- -- -- -- -- 1.6E+02 1.6E+02 -- -- -- -- -- -- 1.6E+02 Terr Habitat Chromium III 16065-83-1 -- 1.2E+05 -- 1.8E+06 -- 5.3E+05 -- -- -- -- -- -- -- -- 1.2E+05 NC-Hazard Chromium VI 18540-29-9 3.0E-01 2.3E+02 6.2E+00 3.5E+03 2.8E+00 4.0E+02 1.0E+01 1.0E+01 -- -- -- -- -- -- 3.0E-01 Canc-Risk Chrysene [PAH] 218-01-9 1.1E+02 -- 2.1E+03 -- 9.1E+03 -- 8.8E+00 1.8E+01 2.2E+00 1.0E+01 2.2E+00 5.0E+02 1.0E+03 1.0E+03 2.2E+00 Leaching Cobalt 7440-48-4 4.2E+02 2.3E+01 1.9E+03 3.5E+02 4.9E+01 2.8E+01 5.0E+01 1.0E+02 -- -- -- -- -- -- 2.3E+01 NC-Hazard Copper 7440-50-8 -- 3.1E+03 -- 4.7E+04 -- 1.4E+04 1.8E+02 3.0E+02 -- -- -- -- -- -- 1.8E+02 Terr Habitat Cyanide 57-12-5 -- 5.5E+00 -- 2.5E+01 -- 2.2E+01 1.1E-01 1.1E-01 3.4E-03 3.4E-03 1.9E+04 1.0E+02 5.0E+02 5.0E+02 3.4E-03 Leaching Dibenz[a,h]anthracene [PAH] 53-70-3 1.1E-01 -- 2.1E+00 -- 1.1E+01 -- -- -- 2.9E+01 3.9E+02 2.9E+01 5.0E+02 1.0E+03 1.0E+03 1.1E-01 Canc-Risk Dibromochloromethane 124-48-1 8.3E+00 1.6E+03 3.9E+01 2.3E+04 2.9E+02 7.1E+03 -- -- 3.5E-01 1.1E+01 8.0E+02 1.0E+02 5.0E+02 5.0E+02 3.5E-01 Leaching 1,2-dibromo-3-chloropropane 96-12-8 4.4E-03 4.8E+00 5.9E-02 2.6E+01 1.1E+00 2.0E+01 -- -- 5.9E-04 5.9E-04 9.9E+02 5.0E+02 1.0E+03 1.0E+03 5.9E-04 Leaching 1,2-Dibromoethane 106-93-4 3.6E-02 7.2E+00 1.6E-01 3.0E+01 3.3E+00 3.0E+01 -- -- 5.3E-04 1.9E-03 1.3E+03 5.0E+02 1.0E+03 1.0E+03 5.3E-04 Leaching Non-
drinking
Water
Res:
Shallow Soil
Exposure
Com/Ind:
Shallow Soil
Exposure
Any
Land Use:
Any Soil
Exposure
(CW)
2019 (Rev. 2)
Chemicals CAS No.
Odor Nuisance Levels
(Table S-5)
Summary of Soil ESLs (mg/kg)
Leaching to
Groundwater Levels
(Table S-3)
Soil
Tier 1
ESL
Basis
Gross
Contamin-
ation
Levels
(Table S-4)
Residential:
Shallow Soil
Exposure
Commerical/
Industrial:
Shallow Soil
Exposure
Construction Worker:
Any Land Use/
Any Depth Soil Exposure
Terrestrial Habitat Levels
(Table S-2)
Direct Exposure Human Health
Risk Levels (Table S-1)
Drinking
Water
1 of 4 Soil Summary
Significantly
Vegetated Area
Minimally
Vegetated Area
Cancer
Risk
Non-
cancer
Hazard
Cancer
Risk
Non-
cancer
Hazard
Cancer
Risk
Non-
cancer
Hazard
Examples:
Parkland or
single family
homes
with yards
Examples:
High density
residential or
commercial/
industrial areas
Non-
drinking
Water
Res:
Shallow Soil
Exposure
Com/Ind:
Shallow Soil
Exposure
Any
Land Use:
Any Soil
Exposure
(CW)
2019 (Rev. 2)
Chemicals CAS No.
Odor Nuisance Levels
(Table S-5)
Summary of Soil ESLs (mg/kg)
Leaching to
Groundwater Levels
(Table S-3)
Soil
Tier 1
ESL
Basis
Gross
Contamin-
ation
Levels
(Table S-4)
Residential:
Shallow Soil
Exposure
Commerical/
Industrial:
Shallow Soil
Exposure
Construction Worker:
Any Land Use/
Any Depth Soil Exposure
Terrestrial Habitat Levels
(Table S-2)
Direct Exposure Human Health
Risk Levels (Table S-1)
Drinking
Water
1,2-Dichlorobenzene 95-50-1 -- 1.8E+03 -- 9.4E+03 -- 7.8E+03 4.3E+00 8.5E+00 1.0E+00 1.0E+00 3.8E+02 1.0E+03 2.5E+03 2.5E+03 1.0E+00 Leaching 1,3-Dichlorobenzene 541-73-1 -- -- -- -- -- -- 6.0E+00 1.2E+01 7.4E+00 7.4E+00 6.1E+02 1.0E+02 5.0E+02 5.0E+02 6.0E+00 Terr Habitat 1,4-Dichlorobenzene 106-46-7 2.6E+00 3.4E+03 1.2E+01 2.6E+04 2.8E+02 1.5E+04 4.5E+00 9.0E+00 2.0E-01 2.0E-01 1.9E+02 5.0E+02 1.0E+03 1.0E+03 2.0E-01 Leaching 3,3-Dichlorobenzidine 91-94-1 5.8E-01 -- 2.7E+00 -- 2.0E+01 -- -- -- 2.5E-02 1.3E+02 6.0E+01 5.0E+02 1.0E+03 1.0E+03 2.5E-02 Leaching DDD 72-54-8 2.7E+00 -- 1.2E+01 -- 8.1E+01 -- 8.5E+00 1.7E+01 6.5E+01 6.5E+01 6.5E+01 5.0E+02 1.0E+03 1.0E+03 2.7E+00 Canc-Risk DDE 72-55-9 1.8E+00 -- 8.3E+00 -- 5.7E+01 -- 3.3E-01 6.5E-01 2.9E+01 2.9E+01 2.9E+01 5.0E+02 1.0E+03 1.0E+03 3.3E-01 Terr Habitat DDT 50-29-3 1.9E+00 3.7E+01 8.5E+00 5.2E+02 5.7E+01 1.4E+02 1.1E-03 7.8E+00 5.6E+00 5.6E+00 5.6E+00 5.0E+02 1.0E+03 1.0E+03 1.1E-03 Terr Habitat 1,1-Dichloroethane 75-34-3 3.6E+00 1.6E+04 1.6E+01 2.3E+05 3.7E+02 7.1E+04 1.1E+01 2.1E+01 2.0E-01 3.1E-01 1.7E+03 5.0E+02 1.0E+03 1.0E+03 2.0E-01 Leaching 1,2-Dichloroethane 107-06-2 4.7E-01 3.2E+01 2.1E+00 1.4E+02 4.5E+01 1.3E+02 2.9E+01 2.9E+01 7.0E-03 3.1E-02 3.0E+03 1.0E+02 5.0E+02 5.0E+02 7.0E-03 Leaching 1,1-Dichloroethene 75-35-4 -- 8.3E+01 -- 3.5E+02 -- 3.5E+02 4.3E+01 1.3E+02 5.4E-01 4.2E+00 1.2E+03 5.0E+02 1.0E+03 1.0E+03 5.4E-01 Leaching cis-1,2-Dichloroethene 156-59-2 -- 1.9E+01 -- 8.5E+01 -- 7.8E+01 8.4E+01 9.4E+02 1.9E-01 1.6E+00 2.4E+03 1.0E+02 5.0E+02 5.0E+02 1.9E-01 Leaching trans-1,2-Dichloroethene 156-60-5 -- 1.3E+02 -- 6.0E+02 -- 5.7E+02 8.4E+01 9.4E+02 6.5E-01 1.4E+01 1.9E+03 5.0E+02 1.0E+03 1.0E+03 6.5E-01 Leaching 2,4-Dichlorophenol 120-83-2 -- 2.3E+02 -- 3.5E+03 -- 1.1E+03 2.1E+00 -- 7.5E-03 7.5E-02 5.6E+03 5.0E+02 1.0E+03 1.0E+03 7.5E-03 Leaching 1,2-Dichloropropane 78-87-5 1.0E+00 1.6E+01 4.4E+00 6.6E+01 9.9E+01 6.6E+01 3.1E+01 6.3E+01 6.5E-02 6.5E-02 1.4E+03 1.0E+02 5.0E+02 5.0E+02 6.5E-02 Leaching 1,3-Dichloropropene 542-75-6 5.7E-01 7.2E+01 2.5E+00 3.1E+02 5.3E+01 3.0E+02 3.1E+01 6.3E+01 1.7E-02 4.0E-02 1.6E+03 5.0E+02 1.0E+03 1.0E+03 1.7E-02 Leaching Dieldrin 60-57-1 3.7E-02 3.5E+00 1.6E-01 4.8E+01 1.1E+00 1.2E+01 9.6E-04 1.1E-01 4.6E-04 6.3E-03 2.4E+01 5.0E+02 1.0E+03 1.0E+03 4.6E-04 Leaching Diethyl phthalate 84-66-2 -- 5.1E+04 -- 6.6E+05 -- 1.5E+05 1.3E+01 2.7E+01 2.5E-02 2.5E-02 7.7E+02 5.0E+02 1.0E+03 1.0E+03 2.5E-02 Leaching Dimethyl phthalate 131-11-3 -- -- -- -- -- -- 2.1E+01 4.2E+01 3.5E-02 3.5E-02 4.7E+03 5.0E+02 1.0E+03 1.0E+03 3.5E-02 Leaching 2,4-Dimethylphenol 105-67-9 -- 1.6E+03 -- 2.3E+04 -- 7.1E+03 -- -- 8.1E+00 8.9E+00 2.4E+04 1.0E+02 5.0E+02 5.0E+02 8.1E+00 Leaching 2,4-Dinitrophenol 51-28-5 -- 1.6E+02 -- 2.3E+03 -- 7.1E+02 -- -- 3.0E+00 5.7E+00 8.0E+03 5.0E+02 1.0E+03 1.0E+03 3.0E+00 Leaching 2,4-Dinitrotoluene 121-14-2 2.2E+00 1.6E+02 1.1E+01 2.3E+03 7.9E+01 7.1E+02 -- -- 2.3E-02 1.1E+01 7.2E+02 5.0E+02 1.0E+03 1.0E+03 2.3E-02 Leaching 1,4-Dioxane 123-91-1 4.7E+00 8.1E+02 2.2E+01 4.5E+03 2.1E+02 3.4E+03 1.8E+00 1.8E+00 1.7E-04 8.4E-01 1.2E+05 5.0E+02 1.0E+03 1.0E+03 1.7E-04 Leaching Dioxin (2,3,7,8-TCDD) 1746-01-6 4.8E-06 5.1E-05 2.2E-05 7.2E-04 1.5E-04 2.0E-04 1.3E-05 9.9E-05 3.0E-01 3.0E-01 3.0E-01 5.0E+02 1.0E+03 1.0E+03 4.8E-06 Canc-Risk Endosulfan 115-29-7 -- 4.2E+02 -- 5.8E+03 -- 1.5E+03 2.3E-02 3.8E-01 9.8E-03 9.8E-03 1.3E+01 5.0E+02 1.0E+03 1.0E+03 9.8E-03 Leaching Endrin 72-20-8 -- 2.1E+01 -- 2.9E+02 -- 7.4E+01 1.1E-03 1.1E-03 7.6E-03 7.6E-03 3.0E+01 5.0E+02 1.0E+03 1.0E+03 1.1E-03 Terr Habitat Ethylbenzene 100-41-4 5.9E+00 3.4E+03 2.6E+01 2.1E+04 5.4E+02 1.5E+04 9.0E+01 4.3E+02 4.3E-01 4.3E-01 4.9E+02 5.0E+02 1.0E+03 1.0E+03 4.3E-01 Leaching Fluoranthene [PAH] 206-44-0 -- 2.4E+03 -- 3.0E+04 -- 6.7E+03 6.9E-01 1.2E+05 8.6E+01 8.6E+01 8.6E+01 5.0E+02 1.0E+03 1.0E+03 6.9E-01 Terr Habitat Fluorene [PAH] 86-73-7 -- 2.4E+03 -- 3.0E+04 -- 6.7E+03 -- -- 6.0E+00 6.0E+00 9.4E+01 5.0E+02 1.0E+03 1.0E+03 6.0E+00 Leaching Heptachlor 76-44-8 1.2E-01 3.5E+01 5.3E-01 4.8E+02 3.7E+00 1.2E+02 2.5E-01 5.0E-01 4.4E+01 4.4E+01 4.4E+01 1.0E+03 2.5E+03 2.5E+03 1.2E-01 Canc-Risk Heptachlor epoxide 1024-57-3 6.2E-02 9.1E-01 2.8E-01 1.3E+01 1.9E+00 3.2E+00 -- -- 1.8E-04 6.0E-03 1.2E+01 1.0E+03 2.5E+03 2.5E+03 1.8E-04 Leaching Hexachlorobenzene 118-74-1 1.8E-01 5.6E+01 7.8E-01 7.7E+02 7.7E+00 2.0E+02 1.3E+02 2.5E+02 8.0E-04 8.2E-02 2.3E-01 5.0E+02 1.0E+03 1.0E+03 8.0E-04 Leaching Hexachlorobutadiene 87-68-3 1.2E+00 7.8E+01 5.3E+00 1.2E+03 1.0E+02 3.5E+02 -- -- 2.8E-02 6.2E-02 1.7E+01 5.0E+02 1.0E+03 1.0E+03 2.8E-02 Leaching g-Hexachlorocyclohexane (Lindane) 58-89-9 5.5E-01 2.1E+01 2.5E+00 2.9E+02 1.6E+01 7.4E+01 7.4E+00 1.5E+01 7.4E-03 7.4E-03 1.2E+02 5.0E+02 1.0E+03 1.0E+03 7.4E-03 Leaching Hexachloroethane 67-72-1 1.8E+00 3.8E+01 7.8E+00 3.7E+02 1.3E+02 1.2E+02 -- -- 1.9E-02 9.2E-02 6.7E+01 5.0E+02 1.0E+03 1.0E+03 1.9E-02 Leaching Indeno[1,2,3-c,d]pyrene [PAH] 193-39-5 1.1E+00 -- 2.1E+01 -- 1.1E+02 -- 4.8E-01 9.5E-01 1.6E+01 3.2E+01 2.3E+00 5.0E+02 1.0E+03 1.0E+03 4.8E-01 Terr Habitat Lead 7439-92-1 8.2E+01 8.0E+01 3.8E+02 3.2E+02 2.7E+03 1.6E+02 3.2E+01 3.2E+01 -- -- -- -- -- -- 3.2E+01 Terr Habitat Mercury (elemental) 7439-97-6 -- 1.3E+01 -- 1.9E+02 -- 4.4E+01 1.5E+01 2.0E+01 -- -- -- 5.0E+02 1.0E+03 1.0E+03 1.3E+01 NC-Hazard Methoxychlor 72-43-5 -- 3.5E+02 -- 4.8E+03 -- 1.2E+03 1.3E-01 4.1E+03 1.3E-02 1.3E-02 1.6E+01 5.0E+02 1.0E+03 1.0E+03 1.3E-02 Leaching Methylene chloride 75-09-2 1.9E+00 3.1E+02 2.5E+01 2.5E+03 4.9E+02 1.4E+03 9.8E-01 2.0E+00 1.2E-01 1.9E-01 3.3E+03 5.0E+02 1.0E+03 1.0E+03 1.2E-01 Leaching Methyl ethyl ketone 78-93-3 -- 2.7E+04 -- 2.0E+05 -- 1.2E+05 4.4E+01 8.8E+01 6.1E+00 1.5E+01 2.8E+04 5.0E+02 1.0E+03 1.0E+03 6.1E+00 Leaching Methyl isobutyl ketone 108-10-1 -- 3.4E+04 -- 1.4E+05 -- 1.4E+05 -- -- 3.6E-01 5.1E-01 3.4E+03 1.0E+02 5.0E+02 5.0E+02 3.6E-01 Leaching Methyl mercury 22967-92-6 -- 6.3E+00 -- 8.2E+01 -- 1.9E+01 3.4E-02 3.4E-02 -- -- -- 1.0E+02 5.0E+02 5.0E+02 3.4E-02 Terr Habitat 2-Methylnaphthalene 91-57-6 -- 2.4E+02 -- 3.0E+03 -- 6.7E+02 -- -- 8.8E-01 8.8E-01 3.8E+02 5.0E+02 1.0E+03 1.0E+03 8.8E-01 Leaching Methyl tertiary butyl ether (MTBE) 1634-04-4 4.7E+01 1.6E+04 2.1E+02 6.6E+04 4.1E+03 6.5E+04 3.1E+01 6.3E+01 2.8E-02 2.5E+00 9.0E+03 1.0E+02 5.0E+02 5.0E+02 2.8E-02 Leaching 2 of 4 Soil Summary
Significantly
Vegetated Area
Minimally
Vegetated Area
Cancer
Risk
Non-
cancer
Hazard
Cancer
Risk
Non-
cancer
Hazard
Cancer
Risk
Non-
cancer
Hazard
Examples:
Parkland or
single family
homes
with yards
Examples:
High density
residential or
commercial/
industrial areas
Non-
drinking
Water
Res:
Shallow Soil
Exposure
Com/Ind:
Shallow Soil
Exposure
Any
Land Use:
Any Soil
Exposure
(CW)
2019 (Rev. 2)
Chemicals CAS No.
Odor Nuisance Levels
(Table S-5)
Summary of Soil ESLs (mg/kg)
Leaching to
Groundwater Levels
(Table S-3)
Soil
Tier 1
ESL
Basis
Gross
Contamin-
ation
Levels
(Table S-4)
Residential:
Shallow Soil
Exposure
Commerical/
Industrial:
Shallow Soil
Exposure
Construction Worker:
Any Land Use/
Any Depth Soil Exposure
Terrestrial Habitat Levels
(Table S-2)
Direct Exposure Human Health
Risk Levels (Table S-1)
Drinking
Water
Molybdenum 7439-98-7 -- 3.9E+02 -- 5.8E+03 -- 1.8E+03 6.9E+00 4.0E+01 -- -- -- -- -- -- 6.9E+00 Terr Habitat Naphthalene [PAH] 91-20-3 3.8E+00 1.3E+02 1.7E+01 5.8E+02 4.0E+02 5.0E+02 7.5E-01 2.8E+01 4.2E-02 1.2E+00 2.8E+02 5.0E+02 1.0E+03 1.0E+03 4.2E-02 Leaching Nickel 7440-02-0 1.5E+04 8.2E+02 6.4E+04 1.1E+04 1.7E+03 8.6E+01 1.3E+02 3.4E+02 -- -- -- -- -- -- 8.6E+01 NC-Hazard Pentachlorophenol 87-86-5 1.0E+00 2.5E+02 4.0E+00 2.8E+03 2.0E+01 5.6E+02 1.3E-02 3.9E+01 9.8E-02 7.7E-01 5.1E+01 5.0E+02 1.0E+03 1.0E+03 1.3E-02 Terr Habitat Perchlorate 7790-98-9 -- 5.5E+01 -- 8.2E+02 -- 2.5E+02 -- -- -- -- -- -- -- -- 5.5E+01 NC-Hazard Petroleum - Gasoline -- -- 4.3E+02 -- 2.0E+03 -- 1.8E+03 1.2E+02 1.2E+02 1.1E+03 4.9E+03 1.0E+03 1.0E+02 5.0E+02 5.0E+02 1.0E+02 Odor/Nuis Petroleum - Stoddard Solvent -- -- 2.6E+02 -- 1.4E+03 -- 1.1E+03 2.6E+02 2.6E+02 1.3E+03 8.0E+03 2.3E+03 1.0E+02 5.0E+02 5.0E+02 1.0E+02 Odor/Nuis Petroleum - Jet Fuel -- -- 2.7E+02 -- 1.4E+03 -- 1.1E+03 2.6E+02 2.6E+02 1.3E+03 8.0E+03 2.3E+03 1.0E+02 5.0E+02 5.0E+02 1.0E+02 Odor/Nuis Petroleum - Diesel -- -- 2.6E+02 -- 1.2E+03 -- 1.1E+03 2.6E+02 2.6E+02 1.1E+03 7.3E+03 2.3E+03 5.0E+02 1.0E+03 1.0E+03 2.6E+02 NC-Hazard Petroleum - HOPs -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- Petroleum - Motor Oil -- -- 1.2E+04 -- 1.8E+05 -- 5.4E+04 1.6E+03 1.6E+03 -- -- 5.1E+03 -- -- -- 1.6E+03 Terr Habitat Phenanthrene [PAH] 85-01-8 -- -- -- -- -- -- 7.8E+00 1.6E+01 1.1E+01 1.1E+01 6.9E+01 5.0E+02 1.0E+03 1.0E+03 7.8E+00 Terr Habitat Phenol 108-95-2 -- 2.3E+04 -- 3.5E+05 -- 9.8E+04 9.4E+00 9.4E+00 1.6E-01 1.8E+01 1.0E+05 5.0E+02 1.0E+03 1.0E+03 1.6E-01 Leaching Polychlorinated biphenyls (PCBs) 1336-36-3 2.3E-01 -- 9.4E-01 -- 5.5E+00 -- 1.1E+00 1.1E+00 3.3E+02 3.3E+02 3.3E+02 5.0E+02 1.0E+03 1.0E+03 2.3E-01 Canc-Risk Pyrene [PAH] 129-00-0 -- 1.8E+03 -- 2.3E+04 -- 5.0E+03 4.7E+03 9.9E+04 4.5E+01 4.5E+01 4.5E+01 5.0E+02 1.0E+03 1.0E+03 4.5E+01 Leaching Selenium 7782-49-2 -- 3.9E+02 -- 5.8E+03 -- 1.7E+03 2.4E+00 5.5E+00 -- -- -- -- -- -- 2.4E+00 Terr Habitat Silver 7440-22-4 -- 3.9E+02 -- 5.8E+03 -- 1.8E+03 2.5E+01 5.0E+01 -- -- -- -- -- -- 2.5E+01 Terr Habitat Styrene 100-42-5 -- 5.7E+03 -- 3.3E+04 -- 2.5E+04 2.2E+01 4.3E+01 9.2E-01 1.0E+01 8.7E+02 5.0E+02 1.0E+03 1.0E+03 9.2E-01 Leaching tert-Butyl alcohol 75-65-0 -- -- -- -- -- -- -- -- 7.5E-02 1.1E+02 3.2E+05 1.0E+02 5.0E+02 5.0E+02 7.5E-02 Leaching 1,1,1,2-Tetrachloroethane 630-20-6 2.0E+00 2.3E+03 8.9E+00 3.5E+04 1.9E+02 1.1E+04 -- -- 1.7E-02 1.1E-01 7.0E+02 1.0E+02 5.0E+02 5.0E+02 1.7E-02 Leaching 1,1,2,2-Tetrachloroethane 79-34-5 6.1E-01 1.6E+03 2.7E+00 2.3E+04 4.9E+01 7.1E+03 -- -- 1.8E-02 5.8E-02 1.9E+03 5.0E+02 1.0E+03 1.0E+03 1.8E-02 Leaching Tetrachloroethene 127-18-4 5.9E-01 8.2E+01 2.7E+00 3.9E+02 3.3E+01 3.5E+02 4.5E+00 4.3E+01 8.0E-02 8.0E-02 1.7E+02 5.0E+02 1.0E+03 1.0E+03 8.0E-02 Leaching Thallium 7440-28-0 -- 7.8E-01 -- 1.2E+01 -- 3.5E+00 1.8E+00 4.5E+00 -- -- -- -- -- -- 7.8E-01 NC-Hazard Toluene 108-88-3 -- 1.1E+03 -- 5.3E+03 -- 4.7E+03 1.4E+02 6.6E+02 3.2E+00 1.0E+01 8.1E+02 5.0E+02 1.0E+03 1.0E+03 3.2E+00 Leaching Toxaphene 8001-35-2 5.1E-01 -- 2.2E+00 -- 1.4E+01 -- -- -- 2.5E+02 2.5E+02 2.5E+02 5.0E+02 1.0E+03 1.0E+03 5.1E-01 Canc-Risk 1,2,4-Trichlorobenzene 120-82-1 2.4E+01 5.9E+01 1.1E+02 2.6E+02 8.5E+02 2.4E+02 1.6E+01 3.0E+01 1.2E+00 6.0E+00 4.2E+02 5.0E+02 1.0E+03 1.0E+03 1.2E+00 Leaching 1,1,1-Trichloroethane 71-55-6 -- 1.7E+03 -- 7.3E+03 -- 7.2E+03 2.2E+01 4.4E+01 7.0E+00 7.0E+00 6.5E+02 5.0E+02 1.0E+03 1.0E+03 7.0E+00 Leaching 1,1,2-Trichloroethane 79-00-5 1.2E+00 1.5E+00 5.1E+00 6.4E+00 1.1E+02 6.3E+00 1.0E+02 2.0E+02 7.6E-02 7.9E-02 2.2E+03 1.0E+02 5.0E+02 5.0E+02 7.6E-02 Leaching Trichloroethene 79-01-6 9.5E-01 4.2E+00 6.1E+00 1.9E+01 1.3E+02 1.8E+01 8.1E+00 2.5E+02 8.5E-02 8.5E-02 7.0E+02 5.0E+02 1.0E+03 1.0E+03 8.5E-02 Leaching 2,4,5-Trichlorophenol 95-95-4 -- 7.8E+03 -- 1.2E+05 -- 3.5E+04 5.5E+00 1.0E+01 2.9E+00 2.9E+00 1.2E+04 5.0E+02 1.0E+03 1.0E+03 2.9E+00 Leaching 2,4,6-Trichlorophenol 88-06-2 9.9E+00 7.8E+01 4.7E+01 1.2E+03 3.5E+02 3.5E+02 5.5E+00 1.0E+01 4.0E-02 3.1E+01 1.9E+03 1.0E+02 5.0E+02 5.0E+02 4.0E-02 Leaching 1,2,3-Trichloropropane 96-18-4 2.3E-02 4.9E+00 1.1E-01 2.1E+01 8.3E-01 2.0E+01 -- -- 1.1E-04 1.3E-04 1.4E+03 1.0E+02 5.0E+02 5.0E+02 1.1E-04 Leaching Vanadium 7440-62-2 -- 3.9E+02 -- 5.8E+03 -- 4.7E+02 1.8E+01 1.8E+01 -- -- -- -- -- -- 1.8E+01 Terr Habitat Vinyl chloride 75-01-4 8.3E-03 7.0E+01 1.5E-01 3.8E+02 3.4E+00 3.0E+02 4.3E+00 8.5E+00 1.5E-03 1.5E-03 3.9E+03 5.0E+02 1.0E+03 1.0E+03 1.5E-03 Leaching Xylenes 1330-20-7 -- 5.8E+02 -- 2.5E+03 -- 2.4E+03 5.5E+01 2.1E+02 2.1E+00 1.0E+01 2.7E+02 5.0E+02 1.0E+03 1.0E+03 2.1E+00 Leaching Zinc 7440-66-6 -- 2.3E+04 -- 3.5E+05 -- 1.1E+05 3.4E+02 3.4E+02 -- -- -- -- -- -- 3.4E+02 Terr Habitat Notes:
Abbreviations:
Canc - Cancer
Com/Ind - Commercial/Industrial
Contam - Contamination
CW - Construction Worker
DDD - Dichlorodiphenyldichloroethane
- Cadmium (Water): Groundwater levels do not apply to cadmium in soil so no soil level are listed. - Petroleum - HOPs: Soil ESLs have not been developed at this time. 3 of 4 Soil Summary
Significantly
Vegetated Area
Minimally
Vegetated Area
Cancer
Risk
Non-
cancer
Hazard
Cancer
Risk
Non-
cancer
Hazard
Cancer
Risk
Non-
cancer
Hazard
Examples:
Parkland or
single family
homes
with yards
Examples:
High density
residential or
commercial/
industrial areas
Non-
drinking
Water
Res:
Shallow Soil
Exposure
Com/Ind:
Shallow Soil
Exposure
Any
Land Use:
Any Soil
Exposure
(CW)
2019 (Rev. 2)
Chemicals CAS No.
Odor Nuisance Levels
(Table S-5)
Summary of Soil ESLs (mg/kg)
Leaching to
Groundwater Levels
(Table S-3)
Soil
Tier 1
ESL
Basis
Gross
Contamin-
ation
Levels
(Table S-4)
Residential:
Shallow Soil
Exposure
Commerical/
Industrial:
Shallow Soil
Exposure
Construction Worker:
Any Land Use/
Any Depth Soil Exposure
Terrestrial Habitat Levels
(Table S-2)
Direct Exposure Human Health
Risk Levels (Table S-1)
Drinking
Water
DDE - Dichlorodiphenyldichloroethene
DDT - Dichlorodiphenyltrichloroethane
Exp - Exposure
HOPs - Hydrocarbon Oxidation Products (biodegradation metabolites and photo-oxidation products of petroleum hydrocarbons). See User's Guide Chapter 4 for further information.
NC - Noncancer
Odor/Nuis - Odor Nuisance
PAH - Polycyclic aromatic hydrocarbon
Res - Residential
TCDD - Tetrachlorodibenzodioxin
Terr - Terrestrial
4 of 4 Soil Summary
Cancer
Risk
Non-
cancer
Hazard
Cancer
Risk
Non-
cancer
Hazard
Cancer
Risk
Non-
cancer
Hazard
Cancer
Risk
Non-
cancer
Hazard
Acenaphthene [PAH] 83-32-9 -- -- -- -- 1.7E+04 1.7E+04 Odor/Nuis -- -- -- -- 5.1E+02 5.1E+02 Nuis/Odor Acenaphthylene [PAH] 208-96-8 -- -- -- -- -- -- -- -- -- -- -- -- -- -- Acetone 67-64-1 -- 1.1E+06 -- 4.5E+06 1.0E+06 1.0E+06 Odor/Nuis -- 3.2E+04 -- 1.4E+05 3.1E+04 3.1E+04 Nuis/Odor Aldrin 309-00-2 1.9E-02 -- 8.3E-02 -- 8.8E+03 1.9E-02 Canc-Risk 5.7E-04 -- 2.5E-03 -- 2.6E+02 5.7E-04 Canc-Risk Anthracene [PAH] 120-12-7 -- -- -- -- -- -- -- -- -- -- -- -- -- -- Antimony 7440-36-0 -- -- -- -- -- -- -- -- -- -- -- -- -- -- Arsenic 7440-38-2 -- -- -- -- -- -- -- -- -- -- -- -- -- -- Barium 7440-39-3 -- -- -- -- -- -- -- -- -- -- -- -- -- -- Benzene 71-43-2 3.2E+00 1.0E+02 1.4E+01 4.4E+02 1.6E+05 3.2E+00 Canc-Risk 9.7E-02 3.1E+00 4.2E-01 1.3E+01 4.9E+03 9.7E-02 Canc-Risk Benzo[a]anthracene [PAH] 56-55-3 3.1E-01 -- 3.7E+00 -- -- 3.1E-01 Canc-Risk 9.2E-03 -- 1.1E-01 -- -- 9.2E-03 Canc-Risk Benzo[a]pyrene [PAH] 50-32-8 -- -- -- -- -- -- -- -- -- -- -- -- -- -- Benzo[b]fluoranthene [PAH] 205-99-2 -- -- -- -- -- -- -- -- -- -- -- -- -- -- Benzo[g,h,i]perylene [PAH] 191-24-2 -- -- -- -- -- -- -- -- -- -- -- -- -- -- Benzo[k]fluoranthene [PAH] 207-08-9 -- -- -- -- -- -- -- -- -- -- -- -- -- -- Beryllium 7440-41-7 -- -- -- -- -- -- -- -- -- -- -- -- -- -- 1,1-Biphenyl 92-52-4 -- 1.4E+01 -- 5.8E+01 2.0E+03 1.4E+01 NC-Hazard -- 4.2E-01 -- 1.8E+00 6.0E+01 4.2E-01 NC-Hazard Bis(2-chloroethyl) ether 111-44-4 1.3E-01 -- 5.8E-01 -- 9.6E+03 1.3E-01 Canc-Risk 4.0E-03 -- 1.7E-02 -- 2.9E+02 4.0E-03 Canc-Risk Bis(2-chloro-1-methylethyl) ether 108-60-1 9.4E+00 -- 4.1E+01 -- 7.5E+04 9.4E+00 Canc-Risk 2.8E-01 -- 1.2E+00 -- 2.2E+03 2.8E-01 Canc-Risk Bis(2-ethylhexyl) phthalate 117-81-7 -- -- -- -- -- -- -- -- -- -- -- -- -- -- Boron 7440-42-8 -- -- -- -- -- -- -- -- -- -- -- -- -- -- Bromodichloromethane 75-27-4 2.5E+00 -- 1.1E+01 -- 3.7E+08 2.5E+00 Canc-Risk 7.6E-02 -- 3.3E-01 -- 1.1E+07 7.6E-02 Canc-Risk Bromoform (Tribromomethane) 75-25-2 8.5E+01 -- 3.7E+02 -- 4.5E+05 8.5E+01 Canc-Risk 2.6E+00 -- 1.1E+01 -- 1.3E+04 2.6E+00 Canc-Risk Bromomethane 74-83-9 -- 1.7E+02 -- 7.3E+02 2.7E+06 1.7E+02 NC-Hazard -- 5.2E+00 -- 2.2E+01 8.0E+04 5.2E+00 NC-Hazard Cadmium (soil) 7440-43-9 -- -- -- -- -- -- -- -- -- -- -- -- -- -- Cadmium (water) 7440-43-9 -- -- -- -- -- -- -- -- -- -- -- -- -- -- Carbon tetrachloride 56-23-5 1.6E+01 1.4E+03 6.8E+01 5.8E+03 2.1E+06 1.6E+01 Canc-Risk 4.7E-01 4.2E+01 2.0E+00 1.8E+02 6.3E+04 4.7E-01 Canc-Risk Chlordane 12789-03-6 2.8E-01 2.4E+01 1.2E+00 1.0E+02 2.8E+02 2.8E-01 Canc-Risk 8.3E-03 7.3E-01 3.6E-02 3.1E+00 8.4E+00 8.3E-03 Canc-Risk p-Chloroaniline 106-47-8 -- -- -- -- -- -- -- -- -- -- -- -- -- -- Chlorobenzene 108-90-7 -- 1.7E+03 -- 7.3E+03 3.3E+04 1.7E+03 NC-Hazard -- 5.2E+01 -- 2.2E+02 1.0E+03 5.2E+01 NC-Hazard Chloroethane 75-00-3 -- 3.5E+05 -- 1.5E+06 1.3E+07 3.5E+05 NC-Hazard -- 1.0E+04 -- 4.4E+04 3.8E+05 1.0E+04 NC-Hazard Chloroform 67-66-3 4.1E+00 3.4E+03 1.8E+01 1.4E+04 1.4E+07 4.1E+00 Canc-Risk 1.2E-01 1.0E+02 5.3E-01 4.3E+02 4.2E+05 1.2E-01 Canc-Risk Chloromethane 74-87-3 -- 3.1E+03 -- 1.3E+04 -- 3.1E+03 NC-Hazard -- 9.4E+01 -- 3.9E+02 -- 9.4E+01 NC-Hazard 2-Chlorophenol 95-57-8 -- -- -- -- 6.3E+02 6.3E+02 Odor/Nuis -- -- -- -- 1.9E+01 1.9E+01 Nuis/Odor Subslab/
Soil Gas
Vapor Intrusion:
Odor Nuisance
Levels
(Table
SG-2)
Subslab/Soil Gas
Vapor Intrusion: Human Health Risk Levels
(Table SG-1)
Residential Commercial/
Industrial Residential Commercial/
Industrial
2019 (Rev. 2)
Chemicals CAS No.
Summary of Vapor ESLs
Subslab/ Soil Gas (µg/m3) Indoor Air (µg/m3)
Tier 1
ESL Basis Tier 1
ESL Basis
Odor
Nuisance
Levels
(Table IA-2)
Direct Exposure
Human Health Risk
Levels (Table IA-1)
1 of 4 Vapor Summary
Cancer
Risk
Non-
cancer
Hazard
Cancer
Risk
Non-
cancer
Hazard
Cancer
Risk
Non-
cancer
Hazard
Cancer
Risk
Non-
cancer
Hazard
Subslab/
Soil Gas
Vapor Intrusion:
Odor Nuisance
Levels
(Table
SG-2)
Subslab/Soil Gas
Vapor Intrusion: Human Health Risk Levels
(Table SG-1)
Residential Commercial/
Industrial Residential Commercial/
Industrial
2019 (Rev. 2)
Chemicals CAS No.
Summary of Vapor ESLs
Subslab/ Soil Gas (µg/m3) Indoor Air (µg/m3)
Tier 1
ESL Basis Tier 1
ESL Basis
Odor
Nuisance
Levels
(Table IA-2)
Direct Exposure
Human Health Risk
Levels (Table IA-1)
Chromium (total) 7440-47-3 -- -- -- -- -- -- -- -- -- -- -- -- -- -- Chromium III 16065-83-1 -- -- -- -- -- -- -- -- -- -- -- -- -- -- Chromium VI 18540-29-9 -- -- -- -- -- -- -- -- -- -- -- -- -- -- Chrysene [PAH] 218-01-9 -- -- -- -- -- -- -- -- -- -- -- -- -- -- Cobalt 7440-48-4 -- -- -- -- -- -- -- -- -- -- -- -- -- -- Copper 7440-50-8 -- -- -- -- -- -- -- -- -- -- -- -- -- -- Cyanide 57-12-5 -- 2.8E+01 -- 1.2E+02 2.2E+04 2.8E+01 NC-Hazard -- 8.3E-01 -- 3.5E+00 6.5E+02 8.3E-01 NC-Hazard Dibenz[a,h]anthracene [PAH] 53-70-3 -- -- -- -- -- -- -- -- -- -- -- -- -- -- Dibromochloromethane 124-48-1 -- -- -- -- -- -- -- -- -- -- -- -- -- -- 1,2-dibromo-3-chloropropane 96-12-8 5.6E-03 7.0E+00 6.8E-02 2.9E+01 -- 5.6E-03 Canc-Risk 1.7E-04 2.1E-01 2.0E-03 8.8E-01 -- 1.7E-04 Canc-Risk 1,2-Dibromoethane 106-93-4 1.6E-01 2.8E+01 6.8E-01 1.2E+02 6.7E+06 1.6E-01 Canc-Risk 4.7E-03 8.3E-01 2.0E-02 3.5E+00 2.0E+05 4.7E-03 Canc-Risk 1,2-Dichlorobenzene 95-50-1 -- 7.0E+03 -- 2.9E+04 1.0E+07 7.0E+03 NC-Hazard -- 2.1E+02 -- 8.8E+02 3.1E+05 2.1E+02 NC-Hazard 1,3-Dichlorobenzene 541-73-1 -- -- -- -- -- -- -- -- -- -- -- -- -- -- 1,4-Dichlorobenzene 106-46-7 8.5E+00 2.8E+04 3.7E+01 1.2E+05 3.7E+04 8.5E+00 Canc-Risk 2.6E-01 8.3E+02 1.1E+00 3.5E+03 1.1E+03 2.6E-01 Canc-Risk 3,3-Dichlorobenzidine 91-94-1 -- -- -- -- -- -- -- -- -- -- -- -- -- -- DDD 72-54-8 -- -- -- -- -- -- -- -- -- -- -- -- -- --
DDE 72-55-9 9.6E-01 -- 4.2E+00 -- -- 9.6E-01 Canc-Risk 2.9E-02 -- 1.3E-01 -- -- 2.9E-02 Canc-Risk DDT 50-29-3 -- -- -- -- -- -- -- -- -- -- -- -- -- --
1,1-Dichloroethane 75-34-3 5.8E+01 -- 2.6E+02 -- 4.2E+06 5.8E+01 Canc-Risk 1.8E+00 -- 7.7E+00 -- 1.3E+05 1.8E+00 Canc-Risk 1,2-Dichloroethane 107-06-2 3.6E+00 2.4E+02 1.6E+01 1.0E+03 8.1E+04 3.6E+00 Canc-Risk 1.1E-01 7.3E+00 4.7E-01 3.1E+01 2.4E+03 1.1E-01 Canc-Risk 1,1-Dichloroethene 75-35-4 -- 2.4E+03 -- 1.0E+04 6.7E+07 2.4E+03 NC-Hazard -- 7.3E+01 -- 3.1E+02 2.0E+06 7.3E+01 NC-Hazard cis-1,2-Dichloroethene 156-59-2 -- 2.8E+02 -- 1.2E+03 -- 2.8E+02 NC-Hazard -- 8.3E+00 -- 3.5E+01 -- 8.3E+00 NC-Hazard trans-1,2-Dichloroethene 156-60-5 -- 2.8E+03 -- 1.2E+04 2.2E+06 2.8E+03 NC-Hazard -- 8.3E+01 -- 3.5E+02 6.7E+04 8.3E+01 NC-Hazard 2,4-Dichlorophenol 120-83-2 -- -- -- -- 4.7E+04 4.7E+04 Odor/Nuis -- -- -- -- 1.4E+03 1.4E+03 Nuis/Odor 1,2-Dichloropropane 78-87-5 9.4E+00 1.4E+02 4.1E+01 5.8E+02 4.0E+04 9.4E+00 Canc-Risk 2.8E-01 4.2E+00 1.2E+00 1.8E+01 1.2E+03 2.8E-01 Canc-Risk 1,3-Dichloropropene 542-75-6 5.8E+00 7.0E+02 2.6E+01 2.9E+03 1.4E+05 5.8E+00 Canc-Risk 1.8E-01 2.1E+01 7.7E-01 8.8E+01 4.2E+03 1.8E-01 Canc-Risk Dieldrin 60-57-1 2.0E-02 -- 8.9E-02 -- -- 2.0E-02 Canc-Risk 6.1E-04 -- 2.7E-03 -- -- 6.1E-04 Canc-Risk Diethyl phthalate 84-66-2 -- -- -- -- -- -- -- -- -- -- -- -- -- -- Dimethyl phthalate 131-11-3 -- -- -- -- -- -- -- -- -- -- -- -- -- -- 2,4-Dimethylphenol 105-67-9 -- -- -- -- 3.3E+01 3.3E+01 Odor/Nuis -- -- -- -- 1.0E+00 1.0E+00 Nuis/Odor 2,4-Dinitrophenol 51-28-5 -- -- -- -- -- -- -- -- -- -- -- -- -- -- 2,4-Dinitrotoluene 121-14-2 -- -- -- -- -- -- -- -- -- -- -- -- -- -- 1,4-Dioxane 123-91-1 1.2E+01 1.0E+03 5.3E+01 4.4E+03 2.0E+07 1.2E+01 Canc-Risk 3.6E-01 3.1E+01 1.6E+00 1.3E+02 6.1E+05 3.6E-01 Canc-Risk 2 of 4 Vapor Summary
Cancer
Risk
Non-
cancer
Hazard
Cancer
Risk
Non-
cancer
Hazard
Cancer
Risk
Non-
cancer
Hazard
Cancer
Risk
Non-
cancer
Hazard
Subslab/
Soil Gas
Vapor Intrusion:
Odor Nuisance
Levels
(Table
SG-2)
Subslab/Soil Gas
Vapor Intrusion: Human Health Risk Levels
(Table SG-1)
Residential Commercial/
Industrial Residential Commercial/
Industrial
2019 (Rev. 2)
Chemicals CAS No.
Summary of Vapor ESLs
Subslab/ Soil Gas (µg/m3) Indoor Air (µg/m3)
Tier 1
ESL Basis Tier 1
ESL Basis
Odor
Nuisance
Levels
(Table IA-2)
Direct Exposure
Human Health Risk
Levels (Table IA-1)
Dioxin (2,3,7,8-TCDD) 1746-01-6 2.5E-06 1.4E-03 1.1E-05 5.8E-03 -- 2.5E-06 Canc-Risk 7.4E-08 4.2E-05 3.2E-07 1.8E-04 -- 7.4E-08 Canc-Risk Endosulfan 115-29-7 -- -- -- -- -- -- -- -- -- -- -- -- -- -- Endrin 72-20-8 -- -- -- -- -- -- -- -- -- -- -- -- -- -- Ethylbenzene 100-41-4 3.7E+01 3.5E+04 1.6E+02 1.5E+05 6.7E+04 3.7E+01 Canc-Risk 1.1E+00 1.0E+03 4.9E+00 4.4E+03 2.0E+03 1.1E+00 Canc-Risk Fluoranthene [PAH] 206-44-0 -- -- -- -- -- -- -- -- -- -- -- -- -- -- Fluorene [PAH] 86-73-7 -- -- -- -- -- -- -- -- -- -- -- -- -- -- Heptachlor 76-44-8 7.2E-02 -- 3.1E-01 -- 1.0E+04 7.2E-02 Canc-Risk 2.2E-03 -- 9.4E-03 -- 3.0E+02 2.2E-03 Canc-Risk Heptachlor epoxide 1024-57-3 3.6E-02 -- 1.6E-01 -- 1.0E+04 3.6E-02 Canc-Risk 1.1E-03 -- 4.7E-03 -- 3.0E+02 1.1E-03 Canc-Risk Hexachlorobenzene 118-74-1 1.8E-01 -- 8.0E-01 -- -- 1.8E-01 Canc-Risk 5.5E-03 -- 2.4E-02 -- -- 5.5E-03 Canc-Risk Hexachlorobutadiene 87-68-3 4.3E+00 -- 1.9E+01 -- 4.0E+05 4.3E+00 Canc-Risk 1.3E-01 -- 5.6E-01 -- 1.2E+04 1.3E-01 Canc-Risk g-Hexachlorocyclohexane (Lindane) 58-89-9 -- -- -- -- -- -- -- -- -- -- -- -- -- -- Hexachloroethane 67-72-1 8.5E+00 1.0E+03 3.7E+01 4.4E+03 -- 8.5E+00 Canc-Risk 2.6E-01 3.1E+01 1.1E+00 1.3E+02 -- 2.6E-01 Canc-Risk Indeno[1,2,3-c,d]pyrene [PAH] 193-39-5 -- -- -- -- -- -- -- -- -- -- -- -- -- -- Lead 7439-92-1 -- -- -- -- -- -- -- -- -- -- -- -- -- -- Mercury (elemental) 7439-97-6 -- 1.0E+00 -- 4.4E+00 -- 1.0E+00 NC-Hazard -- 3.1E-02 -- 1.3E-01 -- 3.1E-02 NC-Hazard Methoxychlor 72-43-5 -- -- -- -- -- -- -- -- -- -- -- -- -- -- Methylene chloride 75-09-2 3.4E+01 1.4E+04 4.1E+02 5.8E+04 1.9E+07 3.4E+01 Canc-Risk 1.0E+00 4.2E+02 1.2E+01 1.8E+03 5.6E+05 1.0E+00 Canc-Risk Methyl ethyl ketone 78-93-3 -- 1.7E+05 -- 7.3E+05 1.1E+06 1.7E+05 NC-Hazard -- 5.2E+03 -- 2.2E+04 3.2E+04 5.2E+03 NC-Hazard Methyl isobutyl ketone 108-10-1 -- 1.0E+05 -- 4.4E+05 1.4E+04 1.4E+04 Odor/Nuis -- 3.1E+03 -- 1.3E+04 4.2E+02 4.2E+02 Nuis/Odor Methyl mercury 22967-92-6 -- -- -- -- -- -- -- -- -- -- -- -- -- -- 2-Methylnaphthalene 91-57-6 -- -- -- -- 2.3E+03 2.3E+03 Odor/Nuis -- -- -- -- 6.8E+01 6.8E+01 Nuis/Odor Methyl tertiary butyl ether (MTBE) 1634-04-4 3.6E+02 1.0E+05 1.6E+03 4.4E+05 1.8E+04 3.6E+02 Canc-Risk 1.1E+01 3.1E+03 4.7E+01 1.3E+04 5.3E+02 1.1E+01 Canc-Risk Molybdenum 7439-98-7 -- -- -- -- -- -- -- -- -- -- -- -- -- -- Naphthalene [PAH] 91-20-3 2.8E+00 1.0E+02 1.2E+01 4.4E+02 1.5E+04 2.8E+00 Canc-Risk 8.3E-02 3.1E+00 3.6E-01 1.3E+01 4.4E+02 8.3E-02 Canc-Risk Nickel 7440-02-0 -- -- -- -- -- -- -- -- -- -- -- -- -- -- Pentachlorophenol 87-86-5 -- -- -- -- -- -- -- -- -- -- -- -- -- -- Perchlorate 7790-98-9 -- -- -- -- -- -- -- -- -- -- -- -- -- -- Petroleum - Gasoline -- -- 2.0E+04 -- 8.3E+04 3.3E+03 3.3E+03 Odor/Nuis -- 6.0E+02 -- 2.5E+03 1.0E+02 1.0E+02 Nuis/Odor Petroleum - Stoddard Solvent -- -- 1.1E+04 -- 4.6E+04 3.3E+04 1.1E+04 NC-Hazard -- 3.3E+02 -- 1.4E+03 1.0E+03 3.3E+02 NC-Hazard Petroleum - Jet Fuel -- -- 1.1E+04 -- 4.6E+04 3.3E+04 1.1E+04 NC-Hazard -- 3.3E+02 -- 1.4E+03 1.0E+03 3.3E+02 NC-Hazard Petroleum - Diesel -- -- 8.9E+03 -- 3.7E+04 3.3E+04 8.9E+03 NC-Hazard -- 2.7E+02 -- 1.1E+03 1.0E+03 2.7E+02 NC-Hazard Petroleum - HOPs -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- Petroleum - Motor Oil -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 3 of 4 Vapor Summary
Cancer
Risk
Non-
cancer
Hazard
Cancer
Risk
Non-
cancer
Hazard
Cancer
Risk
Non-
cancer
Hazard
Cancer
Risk
Non-
cancer
Hazard
Subslab/
Soil Gas
Vapor Intrusion:
Odor Nuisance
Levels
(Table
SG-2)
Subslab/Soil Gas
Vapor Intrusion: Human Health Risk Levels
(Table SG-1)
Residential Commercial/
Industrial Residential Commercial/
Industrial
2019 (Rev. 2)
Chemicals CAS No.
Summary of Vapor ESLs
Subslab/ Soil Gas (µg/m3) Indoor Air (µg/m3)
Tier 1
ESL Basis Tier 1
ESL Basis
Odor
Nuisance
Levels
(Table IA-2)
Direct Exposure
Human Health Risk
Levels (Table IA-1)
Phenanthrene [PAH] 85-01-8 -- -- -- -- 1.8E+03 1.8E+03 Odor/Nuis -- -- -- -- 5.5E+01 5.5E+01 Nuis/Odor Phenol 108-95-2 -- -- -- -- 5.2E+03 5.2E+03 Odor/Nuis -- -- -- -- 1.6E+02 1.6E+02 Nuis/Odor Polychlorinated biphenyls (PCBs) 1336-36-3 1.6E-01 -- 7.2E-01 -- -- 1.6E-01 Canc-Risk 4.9E-03 -- 2.2E-02 -- -- 4.9E-03 Canc-Risk Pyrene [PAH] 129-00-0 -- -- -- -- -- -- -- -- -- -- -- -- -- -- Selenium 7782-49-2 -- -- -- -- -- -- -- -- -- -- -- -- -- -- Silver 7440-22-4 -- -- -- -- -- -- -- -- -- -- -- -- -- -- Styrene 100-42-5 -- 3.1E+04 -- 1.3E+05 4.5E+04 3.1E+04 NC-Hazard -- 9.4E+02 -- 3.9E+03 1.4E+03 9.4E+02 NC-Hazard tert-Butyl alcohol 75-65-0 -- -- -- -- -- -- -- -- -- -- -- -- -- -- 1,1,1,2-Tetrachloroethane 630-20-6 1.3E+01 -- 5.5E+01 -- -- 1.3E+01 Canc-Risk 3.8E-01 -- 1.7E+00 -- -- 3.8E-01 Canc-Risk 1,1,2,2-Tetrachloroethane 79-34-5 1.6E+00 -- 7.0E+00 -- 3.5E+05 1.6E+00 Canc-Risk 4.8E-02 -- 2.1E-01 -- 1.0E+04 4.8E-02 Canc-Risk Tetrachloroethene 127-18-4 1.5E+01 1.4E+03 6.7E+01 5.8E+03 1.1E+06 1.5E+01 Canc-Risk 4.6E-01 4.2E+01 2.0E+00 1.8E+02 3.2E+04 4.6E-01 Canc-Risk Thallium 7440-28-0 -- -- -- -- -- -- -- -- -- -- -- -- -- -- Toluene 108-88-3 -- 1.0E+04 -- 4.4E+04 1.0E+06 1.0E+04 NC-Hazard -- 3.1E+02 -- 1.3E+03 3.0E+04 3.1E+02 NC-Hazard Toxaphene 8001-35-2 -- -- -- -- -- -- -- -- -- -- -- -- -- -- 1,2,4-Trichlorobenzene 120-82-1 -- 7.0E+01 -- 2.9E+02 7.3E+05 7.0E+01 NC-Hazard -- 2.1E+00 -- 8.8E+00 2.2E+04 2.1E+00 NC-Hazard 1,1,1-Trichloroethane 71-55-6 -- 3.5E+04 -- 1.5E+05 2.2E+06 3.5E+04 NC-Hazard -- 1.0E+03 -- 4.4E+03 6.5E+04 1.0E+03 NC-Hazard 1,1,2-Trichloroethane 79-00-5 5.8E+00 7.0E+00 2.6E+01 2.9E+01 -- 5.8E+00 Canc-Risk 1.8E-01 2.1E-01 7.7E-01 8.8E-01 -- 1.8E-01 Canc-Risk Trichloroethene 79-01-6 1.6E+01 7.0E+01 1.0E+02 2.9E+02 4.5E+07 1.6E+01 Canc-Risk 4.8E-01 2.1E+00 3.0E+00 8.8E+00 1.4E+06 4.8E-01 Canc-Risk 2,4,5-Trichlorophenol 95-95-4 -- -- -- -- -- -- -- -- -- -- -- -- -- -- 2,4,6-Trichlorophenol 88-06-2 -- -- -- -- 1.0E+01 1.0E+01 Odor/Nuis -- -- -- -- 3.0E-01 3.0E-01 Nuis/Odor 1,2,3-Trichloropropane 96-18-4 -- 1.0E+01 -- 4.4E+01 -- 1.0E+01 NC-Hazard -- 3.1E-01 -- 1.3E+00 -- 3.1E-01 NC-Hazard Vanadium 7440-62-2 -- -- -- -- -- -- -- -- -- -- -- -- -- -- Vinyl chloride 75-01-4 3.2E-01 3.5E+03 5.2E+00 1.5E+04 2.6E+07 3.2E-01 Canc-Risk 9.5E-03 1.0E+02 1.6E-01 4.4E+02 7.7E+05 9.5E-03 Canc-Risk Xylenes 1330-20-7 -- 3.5E+03 -- 1.5E+04 1.5E+04 3.5E+03 NC-Hazard -- 1.0E+02 -- 4.4E+02 4.4E+02 1.0E+02 NC-Hazard Zinc 7440-66-6 -- -- -- -- -- -- -- -- -- -- -- -- -- -- Abbreviations:
Canc-Risk - Cancer
DDD - Dichlorodiphenyldichloroethane
DDE - Dichlorodiphenyldichloroethene
DDT - Dichlorodiphenyltrichloroethane
HOPs - Hydrocarbon Oxidation Products (biodegradation metabolites and photo-oxidation products of petroleum hydrocarbons). See User's Guide Chapter 4 for further information.
NC - Noncancer
Odor/Nuis - Odor Nuisance
PAH - Polycyclic aromatic hydrocarbon
TCDD - Tetrachlorodibenzodioxin
4 of 4 Vapor Summary
2019 (Rev. 2)
Groundwater Subslab/ Soil Gas Indoor Air Indoor Air
Trigger
Level
Trigger
Level
Accelerated
Response Level
Urgent
Response Level
(µg/L) (µg/m3) (µg/m3) (µg/m3)
Residential 5.0E+00 6.7E+01 2.0E+00 6.0E+00
Commercial 2.0E+01 2.7E+02 8.0E+00 2.4E+01
Notes:
User's Guide Chapter 6 presents the basis for the short-term action levels for TCE in groundwater, soil gas, and indoor air. - Commercial: prompt mitigation such as increasing use of HVAC (e.g., increasing outdoor air intake, increasing building pressurization), sealing potential conduits, or treating indoor air - Residential: prompt mitigation such as increasing ventilation, sealing potential conduits, or treating indoor air Short-Term Action Levels for Trichloroethene (TCE)
Land Use
Expedite
Indoor Air
Sampling
Mitigation*
within Weeks
Also see the USEPA Region 9 Memorandum Response Action Levels and Recommendations to Address Near-Term Inhalation Exposures to TCE in Air from Subsurface Vapor Intrusion (USEPA 2014d). *Mitigation - Responses include but are not limited to the following:
Mitigation*
within Days
Trigger Level
Response
Action
Urgent
Response
Action
Accelerated
Response
Action
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Responses to Comment Letter 5: Kitty Moore
Response to Comment 5 -1: The soil sample data for Samples SS2, SS -3, SS-7, SS-8, SS-10, SS-11 and SS-14 were presented in the Phase I Environmental Site Assessment (ESA) prepared for the site by Cornerstone Earth Group (Cornerstone) in 2016, and not the February 25, 2022 Report as noted by the commentor. These samples were found to all be below their respective ESLs for metals, pesticides and PCBs. The 2016 Phase I ESA report was summarized in, but not included in full as an attachment in the Phase I ESA Update and Phase II Soil Quality Evaluation prepared for the project by Cornerstone, dated February 25, 2022, and attached to the IS/MND as Appendix C.
The results of the 2016 Phase I ESA were summarized in the 2022 ESA Update report, but the 2016 ESA report itself was not included. Sample SS -11 was discussed in the summary analysis of soil quality in the 2022 report because the Water Board’s Tier 1 screening ESL for one of the contaminants (TPHo) in the suspected truck wash area had changed since the 2016 report . The ESL had increased from 100 to 1,600 mg/kg, so Cornerstone’s finding had changed form above the threshold to below the threshold. No other samples from the 2016 Phase I ESA were specifically mentioned.
Response to Comment 5-2: As stated in the response to the previous comment, the Phase I ESA prepared for the site by Cornerstone in 2016 was not included in or appended to the 2022 report. However, the summary analysis of soil quality in the 2022 report discusses the results of the sampling from the 2016 report, which included samples collected from the suspected truck wash location and construction and demolition waste piles. These areas of the site are where the SP samples (including SP -1 through SP -6) w ere taken from. The 2022 report concluded that organochlorine pesticides were not detected in the soil samples at concentrations exceeding residential screening levels, and that no PCBs, volatile organics compounds or total petroleum hydrocarbons as gasoline were detected.
In addition, the detected metals concentrations in these samples appeared typical of natural background concentrations. Since the focus of the 2022 report was the lead-contaminated soils located closer to the Lawrence Expressway side of t he project site, no further analysis of these samples was included in the 2022 report.
Response to Comment 5 -
3: As described in the 2022 Cornerstone report, n o
screening levels are published for properties used for park or recreational purposes. The available screening levels are based on potential health risks and exposure assumptions in residential and commercial settings. Exposure
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assumptions for park users would be different from residential and commercial users. For example, the anticipated length of time that a park visitor would be exposed to impacted soil in a park setting would be less than the duration of exposure in a residential setting. Thus, the residential screening lev els may be lower than what is adequate to protect human health in a park setting.
Given the short duration of time that park visitors are expected to be present within the planned park, it is Cornerstone’s opinion that the observed lead concentrations do not pose a significant risk to human health under the planned land use scenario.
The statistical analysis of the lead data, borne out by the sampling, shows that soil quality at the site is not significantly impacted by lead with the exception of a thin strip (less than approximately 20 feet wide) of shallow soil (upper approximate 1 to 2 feet) along the easter property boundary adjacent to Lawrence Expressway.
The project includes the excavation and off -haul of the lead-contaminated soil to a depth of approximately one foot in some portions of the site and disposal at an appropriately permitted facility. Other portions of the site with lead contamination such as the proposed berm areas, are proposed to be capped with a minimum 2 - foot layer of clean soil. The City will seek regulatory oversight from an appropriate agency, such as the Santa Clara County Department of Environmental Health to oversee and approve the satisfactory handling and removal and capping of the lead impacted soil.
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ERRATA
10. Other public agencies whose approval is required: Santa Clara Valley Water District (Valley Water), California Department of Fish and Wildlife , and San Francisco Bay Regional Water Quality Control Board, and Caltrans (Oversize/Overweight Vehicle Permit).
Mixed Oak Forest and Woodland Alliance
Mixed oak forest and woodland alliance vegetation community occurs along Saratoga Creek. Within the study area, the riparian habitat is composed entirely of this vegetation community as the individual trees are either rooted below the top of bank of Saratoga Creek or just at the top of the creek bank and have a tree canopy that overhangs the stream channel (Appendix B, Photos 1 and 2 of the BCA). This community also overhangs portions of a berm along the east side of the creek, both in the northern portion of the study area (Appendix B Photo 2 and 3 of the BCA) and the southern portion of the study area (Appendix B Photo 4 of the BCA). The berm is sparsely to heavily vegetated with trees and shrubs, and in some areas, it defines the top of bank of the creek. Within this natural community, valley oak (Quercus lobata), coast live oak (Quercus agrifolia), and California sycamore (Platanus occidentalis) are co -dominant. Other trees present include blue gum eucalyptus (Eucalyptus globulous), elderberry (Sambucus sp.), arroyo willow (Salix lasiolepis), red willow (Salix laevigata), glossy privet (Ligustrum lucidum), and shamel ash (Fraxinus uhdei). These trees form a nearly continuous canopy, except in the southern portion of the creek and the engineered portions of the creek where bank stabilizing structures (e.g., gabions) are present. The understory consists of a combination of shrubs and herbaceous species, including Himalayan blackberry (Rubus armeniacus), English ivy (Hedera helix), castor bean (Ricinus communis), French broom (Genista monspessulana), periwinkle (Vinca minor), mugwort (Artemesia vulgaris), and horehound (Marrubium vulgare), and grasses including smilo grass (Stipa miliacea). With exception of mugwort, most of the understory species are non-native and some may be classified as invasive species.
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The Coast Live Oak Woodland and Forest Alliance
The Coast Live Oak Woodland and Forest Alliance vegetation community is located adjacent to most of the riparian community and extends to the eastern edge of the study area. Although this plant community is located adjacent to the riparian community, it is differentiated from the riparian community where there is a break in the tree canopy. Thus, this plant community is not part of the riparian community. The community is dominated by mature coast live oak trees. Other trees present included California buck eye (Aesculus californica), toyon (Heteromeles arbutifolia), Monterey pine (Pinus radiata), and strawberry tree (Arbutus unedo). This community forms a mix of continuous canopy to areas with sparser canopy (Appendix B. Photo 5 of the BCA). The understory is open and sparsely vegetated with a variety of native and non- native shrubs, including holly oak (Quercus ilex) and coyote brush (Baccharis pilularis); and herbaceous vegetation including Himalayan blackberry, French broom, fennel (Foeniculum vulgare), milk thistle (Silybum marianum), wild mustard (Hirschfeldia incana), Spanish broom (Cytisus multiflorus), and Mexican sage (Salvia longistyla); and grasses including smilo grass, and ripgut brome (Bromus diandrus). With exception of coyote bush, most of the understory species are non -native and some may be classified as invasive species.
Animals header and before Less than Significant with Mitigation discussion.
Based on a review of the USFWS and CNDDB databases (IPac 2022, CNDDB 2022) and other data sources, and an assessment of the habitats within the study area, several special -status species occur within the study area region. Three of those species, northwest ern pond turtle (Actinemys marmorata), yellow warbler (Setophaga petechia), and San Francisco dusky -footed woodrat have some potential to occur within the study area. However, most of the species that were considered in this analysis are not expected to occur within the study area due to the lack of suitable habitat (e.g., grassland, marsh, serpentine, perennial stream), the site is outside the range of the species, and/or it is isolated from the nearest known extant population by development or otherwise u nsuitable habitat. Species
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considered for occurrence, because potentially suitable habitat is present, but determined to have no potential to occur within the study area are the Central California Coast steelhead (Oncorhynchus mykiss irideus) and California red- legged frog (Rana draytonii). Those species considered for occurrence and the reasons they were determined to occur or not occur are discussed below.
Saratoga Creek is an intermittent stream and was dry at the time of the survey. Southwestern pond turtles are not expected to be present in the creek due to the lack of emergent vegetation and lack of upland breeding habitat along the stretch of the creek. However, the creek may provide potential dispersal habitat for turtles in years when water is present for sufficient periods of time. Pond turtles are not known to occur within the study area but have been documented in San Tomas- Aquino Creek, near the confluence with Calabazas Creek, and in San Tomas-Aquino Creek, approximately 6.5 and nine miles north of the study area (CNDDB 2022), and more recently approximately 1.9 miles upstream of the site in 2024 (Valley Water 2024). Even though the study area contains suitable dispersal habitat for western pond turtle, it is highly unlikely that pond turtles would disperse into the study area due to the greater than six -mile distance separating the site from the nearest recorded occurrence, and due to the high levels of disturbance and isolation from natural habitats in the region.
Additionally, barriers to aquatic dispersal of fish further downstream may also block pond turtle movement. Nonetheless, this species may occur elsewhere in Saratoga Creek (e.g., upstream), thus; it is possible that an individual could occasionally disperse into the study area. Although the majority of the Plan would be constructed outside the riparian corridor, minor work within the riparian corridor or creek itself (e.g., stormwater outfall) and work adjacent to the riparian area could result in injury or mortality of turtles due to equipment, vehicle traffic, and foot traffic, a potentially significant impac t under CEQA due to the regional rarity of this species.
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paragraph:
The existing Saratoga Creek Trail and Saratoga Creek within the study area may be subject to Valley Water jurisdiction if work encroaches within occurs in or near the existing Valley Water property or easements over Saratoga Creek. The proposed Plan would need to comply with the conditions of the Water Resources Protection Ordinance if any design feature results in the modification of any Valley Water facility including, but not limited to, grading and the removal or installation of vegetation. which requir es that Ssuch actions would require an encroachment permit from Valley Water.
Valley Water – Guidelines and Standards for Land Use Near Streams. The project would comply with the requirements and design guidelines of the Valley Water’s Guidelines and Standards for Land Use Near Streams for any activities that would occur within the limits of Valley Water’s property. The manual outlines requirements and recommendations for land use activities in and around Santa Clara County streams, in order to protect stream resources. The City of Cupertino has adopted these guidelines and standards. The concept plan for the proposed project was developed to prioritize and maintain the natural riparian character of Saratoga Creek. The design increases adjacent riparian plantings, increases permeability, and improves water quality. As the detailed project drawings develop, the design guidelines in Guidelines and Standards for Land Use Near Streams will continue to be referenced for alignment. related to riparian corridor protection, general landscaping, encroachments between the TOB, stormwater outfalls, site drainage, and trail constructions. Some of these requirements include the planting of native species, locating paved areas outside of riparian corridors, directing nighttime lighting away from riparian corridors, using drought-tolerant landscaping, and avoidance of new outfalls, among other requirements and recommendations. Conformance with these requirements would reduce potential impacts to less than significant.
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No Impact. The project would construct a linear extension of an existing paved multi-use trail and a new public park that includes play areas, creek overlooks, seating areas and landscaping. The geometric design of the trail and park are designed to be ADA -compliant facilitate safe pedestrian and bicycle travel, safe play, and passive recreation. There are no hazardous or dangerous elements of the proposed project design. The project shall secure an
Oversize/Overweight Vehicle permit from Caltrans for this type of truck use on State highway facilities. There are no incompatible uses.
Santa Clara Valley Water District (Valley Water). 2024. Western pond turtle observation by Valley Water biologists noted in a March 13, 2024, comment letter from Valley Water regarding the draft CEQA for Lawrence- Mitty.
ATTACHMENTS:
The following attachments are included for reference:
• Attachment A: Mitigation Monitoring and Reporting Plan (MMRP) • Attachment B: Notice of Intent County and Filing Receipts
ATTACHMENT C-2
Mitigation Monitoring and Reporting Program
Attachment A: Mitigation Monitoring and Reporting Program Lawrence-Mitty Park and Trail Project March 2024
City of Cupertino Page 1
Lawrence-Mitty Park and Trail Project
MITIGATION MONITORING AND REPORTING PROGRAM
This Mitigation, Monitoring and Reporting Program (MMRP) has been prepared pursuant to the CEQA Guidelines, which state:
“When adopting a mitigated negative declaration, the lead agency shall also adopt a program for reporting on or monitoring the changes which it has either required in the project or made a condition of approval to mitigate or avoid significant environmental effects” (§15074(d)) and;
“The Lead Agency may choose whether its program will monitor mitigation, report on mitigation, or both. “Reporting” generally consists of a written compliance review that is presented to the decision-making body or authorized staff person. A report may be required at various stages during project implementation or upon completion of the mitigation measure. “Monitoring” is generally an ongoing or periodic process of project oversight.
There is often no clear distinction between monitoring and reporting and the program best suited to ensuring compliance in any given instance will usually involve elements of both.” (§15097 (c))
The table beginning on the next page lists the impacts, mitigation measures, and timing of the mitigation measures (when the measures will be implemented) related to the City of Cupertino, Lawrence-Mitty Park and Trail Project. All mitigation measures listed here will be implemented by the City and its contractors.
According to CEQA Guidelines section 15126.4 (a) (2), “Mitigation measures must be fully enforceable through permit conditions, agreements, or other legally-binding instruments. In the case of the adoption of a plan, policy, regulation, or other public project, mitigation measures can be incorporated into the plan, policy, regulation, or project design.” Therefore, all mitigation measures as listed in this MMRP will be adopted by the City when the project is approved.
Mitigation Monitoring and Reporting Program
Mitigation Monitoring and Reporting Program 2
Lawrence-Mitty Park and Trail Project March 2024
City of Cupertino
Impact Mitigation Measure Implementation
and Timing
Monitoring
Responsibility
Impact BIO-1.
Project construction
and project activities
could result in direct
and indirect impacts
to the southwestern
pond turtle.
Mitigation Measure BIO-1a. Conduct Preconstruction Survey. No more than 24 hours prior to the date of initial ground disturbance, a pre- construction survey for southwestern pond turtle will be conducted within the impact area by a qualified biologist. The survey will consist of walking the limits of impact to ascertain the possible presence of the species. The qualified biologist will investigate all potential areas that could be used by southwestern pond turtle for feeding, sheltering, movement, and other essential behaviors.
A qualified biologist is an individual who shall have a degree in biological sciences or related resource management with a minimum of two seasonal years post-degree experience conducting surveys for each amphibian and reptile special-status species that may be present within the project area.
During or following academic training, the qualified biologist shall have achieved a high level of professional experience and knowledge in biological sciences and special-status species identification, ecology, and habitat requirements. Additionally, the qualified biologist must be permitted or authorized to handle and relocate southwestern pond turtle.
Mitigation Measure BIO-1b. Worker Environmental Awareness Program. All construction personnel will participate in a worker environmental awareness program. These personnel will be informed about the possible presence of all special-status species and habitats associated with the species identified here to be potentially present in the parcel and that unlawful take of the animal or destruction of its habitat is a violation of law. Prior to construction activities, a qualified biologist will instruct all construction personnel about (1) the description and status of the species; (2) the importance of their associated habitats; (3) a list of measures being taken to reduce impacts on these species during project construction and implementation; and (4) measures to be followed if special-status species are encountered during construction activities. A fact Implementation:
City of Cupertino
or its contractor
shall implement
this measure with
a qualified
biologist.
Timing:
During
construction
activities.
Monitoring: City
of Cupertino and
a qualified
biologist.
Initials: ________
Date: _________
Mitigation Monitoring and Reporting Program Page 3
Lawrence-Mitty Park and Trail Project March 2024
City of Cupertino
Impact Mitigation Measure Implementation
and Timing
Monitoring
Responsibility
sheet conveying this information will be prepared for distribution to the construction crew and anyone else who enters the project site.
Mitigation Measure BIO-1c. Install Wildlife Exclusion Barrier. Prior to any ground disturbance in the work area, a temporary wildlife exclusion barrier will be installed along the limits of disturbance. A qualified biologist will inspect the area prior to installation of the barrier. The barrier will be designed to allow the southwestern pond turtles to leave the work area and prevent them from entering the work area. The fence will remain in place until all development activities have been completed. This barrier will be inspected daily and maintained and repaired as necessary to ensure that it is functional and is not a hazard to southwestern pond turtles on the outer side of the barrier.
Mitigation Measure BIO-1d. Construction Monitoring. A qualified biologist or biological monitor will be onsite during all project activities that may result in the take of any special status species. The qualified biologist will be given the authority to freely communicate verbally, by telephone, electronic mail, or in writing at any time with construction personnel, any other person(s) at the project site, otherwise associated with the project, and regulatory agencies (e.g., USFWS or CDFW). The qualified biologist or biological monitor will have oversight over implementation of all the mitigation measures and will have the authority and responsibility to stop project activities if they determine any of the measures are not being fulfilled.
A biological monitor is an individual who shall have academic and professional experience in biological sciences and related resource management activities as it pertains to this project, experience with construction-level biological monitoring, be able to recognize species that Mitigation Monitoring and Reporting Program Page 4
Lawrence-Mitty Park and Trail Project March 2024
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Impact Mitigation Measure Implementation
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may be present within the project area, and be familiar with the habits and behavior of those species.
Impact BIO-2:
Project construction
and project activities
could result in direct
and indirect impacts
to the San Francisco
dusky-footed
woodrat.
Mitigation Measure BIO-2a: Pre-Construction Survey for San Francisco Dusky-Footed woodrats. Within 30 days prior to the start of construction activities, a qualified biologist shall map all San Francisco dusky-footed woodrat houses within a 50-foot buffer around the project footprint. Environmentally sensitive habitat fencing shall be placed to protect the houses with a minimum 50-foot buffer. If a 50-foot buffer is not feasible, a smaller buffer may be allowable based on advice from a qualified biologist with knowledge of woodrat ecology and behavior, or Mitigation Measure BIO-2b may be implemented.
Mitigation Measure BIO-2b: Relocation of Woodrat Houses. In the unlikely event that one or more woodrat houses are determined to be present and physical disturbance or destruction of the houses cannot be avoided, then the woodrats shall be evicted from their houses and the nest material relocated outside of the disturbance area, prior to onset of activities that would disturb the house, to avoid injury or mortality of the woodrats. The reproductive season for San Francisco dusky-footed woodrats typically starts in February or March and breeding activity usually continues to July but can extend into September. Thus, relocation efforts should be completed in the fall to minimize the potential for impacts on young woodrats in the house. Additionally, it is recommended that the period between the completion of the relocation efforts and the start of construction activities be minimized to reduce the potential for woodrats to reconstruct houses in the project footprint prior to the start of construction activities.
Implementation:
City of Cupertino
or its contractor
shall implement
this measure with
a qualified
biologist.
Timing:
During
construction
activities.
Monitoring: City
of Cupertino and
a qualified
biologist.
Initials: ________
Date: _________
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Impact BIO-3:
Project construction
activities could
potentially result in
the abandonment of
roosting bat nest
sites.
Mitigation Measure BIO-3a: Pre-Construction Survey for Roosting Bats. A survey of culverts within the project site, including a 50-foot buffer (as feasible) shall be conducted by a qualified bat biologist no less than 30 days before the start of construction-related activities (including but not limited to mobilization and staging, clearing, grubbing, tree removal, vegetation removal, fence installation, demolition, and grading). If construction activities are delayed by more than 30 days, an additional bat survey shall be performed. The survey may be conducted at any time of year but should be conducted in such a way to allow sufficient time to determine if special-status bats or maternity colonies are present on the site. The results of the survey shall be documented.
If no habitat or signs of bats are detected during the habitat suitability survey, no further surveys are warranted. If suitable habitat is present and signs of bat occupancy (e.g., guano pellets or urine staining) are detected, Mitigation Measure BIO-3b shall apply.
Mitigation Measure BIO-3b: Acoustic Survey. If suitable habitat is present and signs of bat occupancy are detected, a follow-up dusk emergence survey shall be conducted no less than 30 days prior to construction activities. A dusk survey will determine the number of bats present and will also include the use of acoustic equipment to determine the species of bats present. The results of the survey shall be documented.
If an active roost is observed within the project site, Mitigation Measure BIO-3c shall apply.
Mitigation Measure BIO-3c: Roost Buffer. If a day roost or a maternity colony is detected and is found sufficiently close to work areas to be disturbed by construction activities, the qualified biologist shall determine the extent of a construction-free buffer zone to be established around the roost in consultation with CDFW. Within the buffer zone, no site Implementation:
City of Cupertino
or its contractor
shall implement
this measure with
a qualified
biologist.
Timing:
Prior to
construction
activities.
Monitoring: City
of Cupertino and
a qualified
biologist.
Initials: ________
Date: _________
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disturbance and mobilization of heavy equipment, including but not limited to equipment staging, fence installation, clearing, grubbing, vegetation removal, demolition, and grading shall be permitted. Monitoring shall be required to ensure compliance with relevant California Fish and Game Code requirements. Monitoring dates and findings shall be documented.
Impact BIO-4:
Construction
disturbance during
the avian breeding
season could cause
the incidental loss of
eggs or nestlings, or
cause the
abandonment of
nests, resulting in
the incidental take of
protected nesting
birds.
Mitigation Measure BIO-4: Pre-Construction/Pre-Disturbance Survey for Nesting Birds.
Avoidance. To the extent feasible, construction activities should be scheduled to avoid the nesting season. If construction activities are scheduled to take place outside the nesting season, all impacts to nesting birds protected under the MBTA and California Fish and Game Code would be avoided. The nesting season for most birds in Santa Clara County extends from February 1 through August 31.
Pre-Construction Surveys. If it is not possible to schedule construction activities between September 1 and January 31, then preconstruction surveys for nesting birds shall be conducted by a qualified biologist to ensure that no nests would be disturbed during project implementation.
These surveys shall be conducted no more than five days prior to the initiation of any site disturbance activities and equipment mobilization, including tree, shrub, or vegetation removal, fence installation, grading, etc.
If project activities are delayed by more than five days, an additional nesting bird survey shall be performed. During this survey, the biologist will inspect all trees and other potential nesting habitats (e.g., trees, shrubs, culverts) in and immediately adjacent to the impact area for nests. Active nesting is present if a bird is building a nest, sitting in a nest, a nest has eggs or chicks in it, or adults are observed carrying food to the nest. The results of the surveys shall be documented.
Implementation:
City of Cupertino
or its contractor
shall implement
this measure with
a qualified
biologist.
Timing:
Prior to and
during
construction
activities.
Monitoring: City
of Cupertino and
a qualified
biologist.
Initials: ________
Date: _________
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If an active nest is found sufficiently close to work areas to be disturbed by these activities, the biologist will determine the extent of a construction-free buffer zone to be established around the nest (typically up to 1,000 feet for raptors and up to 250 feet for other species), to ensure that no nests of species protected by the MBTA and California Fish and Game Code will be disturbed during project implementation. Within the buffer zone, no site disturbance and mobilization of heavy equipment, including but not limited to equipment staging, fence installation, clearing, grubbing, vegetation removal, demolition, and grading will be permitted until the chicks have fledged. Monitoring shall be required to ensure compliance with MBTA and relevant California Fish and Game Code requirements. Monitoring dates and findings shall be documented.
Impact CUL-1:
Ground disturbing
excavation related to
the project may
expose buried
cultural resources
including prehistoric
Native American
burials.
Mitigation Measure CUL-1: The City of Cupertino (City) shall note on any plans that require ground disturbing excavation that there is a potential for exposing buried cultural resources including prehistoric Native American burials. Significant prehistoric cultural resources are defined as human burials, features or other clusterings of finds made, modified or used by Native American peoples in the past. The prehistoric and protohistoric indicators of prior cultural occupation by Native Americans include artifacts and human bone, as well as soil discoloration, shell, animal bone, sandstone cobbles, ashy areas, and baked or vitrified clays. Prehistoric materials may include:
a. Human bone - either isolated or intact burials.
b. Habitation (occupation or ceremonial structures as interpreted from rock rings/features, distinct ground depressions, differences in compaction (e.g., house floors).
Implementation:
The City of
Cupertino shall
implement this
measure with a
qualified
Archaeologist.
Timing: During
construction
activities.
Monitoring:
City of Cupertino.
In the event
archaeological
resources are
discovered, a
qualified
archaeologist
shall write a
report detailing
their findings and
submit it to the
City of Cupertino.
Initials: ________
Date: _________
Mitigation Monitoring and Reporting Program Page 8
Lawrence-Mitty Park and Trail Project March 2024
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c. Artifacts including chipped stone objects such as projectile points and bifaces; groundstone artifacts such as manos, metates, mortars, pestles, grinding stones, pitted hammerstones; and shell and bone artifacts including ornaments and beads.
d. Various features and samples including hearths (fire-cracked rock; baked and vitrified clay), artifact caches, faunal and shellfish remains (which permit dietary reconstruction), distinctive changes in soil stratigraphy indicative of prehistoric activities. e. Isolated artifacts.
Mitigation Measure CUL-2: It is recommended that prior to the start of ground disturbing construction, the City should implement a Worker Awareness Training (WAT) program for cultural resources. Training shall be required for all construction personnel participating in ground disturbing construction to alert them to the archaeological sensitivity of the project area and provide protocols to follow in the event of a discovery of archaeological materials. The training shall be provided by a Registered Professional Archaeologist (RPA). The RPA shall develop and distribute for job site posting an "ALERT SHEET" summarizing potential archaeological finds that could be exposed and the protocols to be followed as well as points of contact to alert in the event of a discovery.
Mitigation Measure CUL-3: The City shall retain a Professional Archaeologist on an “on-call” basis during ground disturbing construction to review, identify and evaluate any potential cultural resources that may be inadvertently exposed during construction. The archaeologist shall review and evaluate any discoveries to determine if they are historical resource(s) and/or unique archaeological resources under the California Environmental Quality Act (CEQA). If the Professional Archaeologist determines that any cultural resources exposed during construction constitute a historical Mitigation Monitoring and Reporting Program Page 9
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resource and/or unique archaeological resource under CEQA, he/she shall notify the City and other appropriate parties of the evaluation and recommend mitigation measures to mitigate to a less-than significant impact in accordance with California Public Resources Code Section 15064.5. Mitigation measures may include avoidance, preservation in- place, recordation, additional archaeological testing and data recovery among other options. The completion of a formal Archaeological Monitoring Plan (AMP) and/or Archaeological Treatment Plan (ATP) that may include data recovery may be recommended by the Professional Archaeologist if significant archaeological deposits are exposed during ground disturbing construction. Development and implementation of the AMP and ATP and treatment of significant cultural resources will be determined by the City in consultation with any regulatory agencies.
Mitigation Monitoring and Reporting Program Page 10
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Impact Mitigation Measure Implementation
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Impact CUL-2:
Construction of the
project may
inadvertently
uncover unrecorded
human remains.
Mitigation Measure CUL-4: In accordance with Section 7050.5 of the California Health and Safety Code, if potential human remains are found, immediately notify the lead agency (City of Cupertino or Santa Clara County) staff and the Santa Clara County Coroner of the discovery. The coroner would provide a determination regarding the nature of the remains within 48 hours of notification. No further excavation or disturbance of the identified material, or any area reasonably suspected to overlie additional remains, can occur until a determination has been made. If the County Coroner determines that the remains are, or are believed to be, of Native American ancestry, the coroner would notify the Native American Heritage Commission within 24 hours. In accordance with California Public Resources Code, Section 5097.98, the Native American Heritage Commission must immediately notify those persons it believes to be the Most Likely Descendant from the deceased Native American. Within 48 hours of this notification, the Most Likely Descendant would recommend to the lead agency their preferred treatment of the remains and associated grave goods.
Implementation:
The City of
Cupertino shall
implement this
measure.
Timing:
During
construction
activities.
Monitoring:
City of Cupertino
and a qualified
archaeologist.
Initials: ________
Date: _________
Impact TRIB-1:
Project construction
could disturb or
damage unknown
tribal cultural
resources resulting
in an adverse
change in the
significance of the
tribal resource.
Mitigation Measure TRIB-1: It is possible for a lead agency to determine that an artifact is considered significant to a local tribe, and thus considered a significant resource under CEQA, even if it would not otherwise be considered significant under CEQA. As such, all Native American tribal finds are to be considered significant until the lead agency has enough evidence to make a determination of significance. In the event that Native American archaeological resources are discovered, or suspected to have been discovered, Native American monitoring will be required before further ground disturbance shall be allowed.
Implementation:
The City of
Cupertino or its
contractor shall
implement this
measure.
Timing:
During
construction
activities
Monitoring:
City of Cupertino.
In the event
paleontological
resources are
encountered, a
paleontologist
shall be
contacted to
evaluate the find.
Initials: ________
Date: _________
ATTACHMENT C-3
Santa Clara County - Notice of Intent Filing
SANTA CLARA COUN"[Y CLERK
CEQA FILING COVER SHEET
Santa Clara County - Clerk-Recorder Office
State of California
File Number: ENV24976
ENVIRONMENTAL FILING
No. of Pages:2
Total Fees: $0.00
File Date: 02/12/2024
Expires: 03/1 3/2024
REGINA ALCOMENDRAS, Clerk-Recorder
By: Ronald Nguyen, Deputy Clerk-Recorder
THfS SPACE FOR CLERK'S USE ONLY
Complete and attach this form to each CEQA Notice filed with the County Clerk
TYPE OR PRINT CLEARLY
Check Document being Filed:
0Environmental Impact Report (EIR)
€ Filing Fee (new project)
€ Previously Paid F&W (must attach F&W receipt and project titles must match) € NO Effect Determination (F&W letter must be attached) € Mitiga.ted Negative Declaration (MND) or Negative Declaration (ND) 0Filing Fee (new project)
gPreviously Paid F&W (must attach F&W receipt and project titles must match) []No Effect Determinafion (F&W letter must be attached) 0Notice of Exemption (NOE)
[/Other (Please fill in type):
Notice of Intent
q. LEADAGENCY: C!VofCuPet't!no
z. 1 EAD AGENCY EMA[L: capitalpro)[email protected] s. PROJECTTITLE4. Lawrence Mi!t7 P ark and Trall proleCt
4. APPL$CANT NAME: susan Michaef PHONE, 408.m.l328
s. APPLICANT erxqii: SusanM@cuperftnoigov
a. APPLICANTADDRESS: 10300 Toffe Avenue, Cupertino, CA 95014
7. PROJECTAPPLJCANT IS A: [/ Loca PublicAgency [] School District [1 0ther Specia! District gState Agency 0Private Entity
8. NOTICE TO BE POSTED FOR ao DAYS.
Fiiing fees are due at the time a Notice of Determination/Exemption is fifed with our office. For more information on filing fees and NO Effect Determinations, p)ease refer to California Code of Regulations, Title 14, section 753.5, Rev Jf2023
Attachment B: County Notice of Intent Filing
CITY OF
NOTICE OF INTENT TO ADOPT A
MITIGATED NEGATIVE DECtARATION
Lawrence Mitty Park and Trail project
CITY OF CUPERTTNO - PUB'LIC WORKS
10300 TORRE AVENUE
CUPERTINO, CA 950I4
PHONE: (408) 777-3354
FAX: (408) 777-3333
NOTICE IS HEREBY GIVEN that the City of Cupertino (City) has prepared a Draft Mitigated Negative DecIaration (MND) for the Lawrence Mitty Park and Trail Project whicli is available beginning on Monday, February 12, 2024 for review and comment by tlie public and all interested persons, agencies, and organizations for aperiod of 30 days, ending onWednesday, Mardai 13, 2024. All comments onthe DraftMND mustbe received by that date.
Project Location: West Side of Lawrence Expressway, between Calvert Drive axtd Mitty Way.
Project Description: The project consists of the development of a new pubhc park and extension of the existing Saratoga Creek Trail on an approximately 7.8-acre site, Iocated aloi-ig the west side of Lawrence Expressway, soutli of Interstate 280 and adjacent to Saratoga Creek in the City of Cupertino Potentially Significant Enviroentai Effects: Potentially siginficant impacts in the fonowing areas are discussed in the Mitigated Negative Dedaration: Biological Resources, Cultural and Tribal Cultural Resources.
Each potentially sigificant effect is reduced to a less-than-significant level through mitigation.
The docutnentwill be available forreview at the following Iocations:
o Cupertino City Hall, 20300 Torre Avenue, Cupert!no, CA o Online at: cupertino.gov/lawrencemitty
Comments on the Draft MND may be submitted in writing to:
City of Cupertino, Public Works Department
10300 Torre Avenue
Cupertino, CA 95m4
ATTN: Susan A&hael, Capital Improvement Programs (CIP) manager (408-777-2328 or SusanM@cupertino,gov)
Susan Midtael, CIP Manager February 12, 2024
Receipt: 24-21718
Regina Alcomendras
Santa Clara County
Clerk-Recorder
(408) 299-5688
https://www.clerkrecorder.org
Product
CEQA
Total
Change (Cash)
Name
ENVIRONMENT AL FILING
# Pages
Document #
Document Info:
Filing Type
PLEASE KEEP FOR REFERENCE
2/12/24 2:12 PM rnguyen
Extended
$0.00
2 ENV24976
CITY' OF CuPERTINO
F
$0.00
$0.00
1 State of Califomia - Department of Fish and Wildlife 2024 ENVIRONMENT AL DOCUMENT FILING FEE
CASH RECEIPT
DFW 753.5a (REV. 01/01/24) Previously DFG 753.5a
SEEINSTRUCTIONSONREVERSE. TYPEORPRINTCLEARLY.
LEAD AGENCY
CITY OF CUPERTINO
COUNTY/STATE AGENCY OF FIIING
PROJECT TITLE
LAWRENCE MITYY PARK AND TRAIL PROJECT
RECEIPT NUMBER:
ENV24976
STATE CLEARINGHOUSE NUMBER (lf applicable)
LEADAGENCY EMAIL
[email protected]
DATE
02/1 2/2024
DOCUMENT NUMBER
PROJECT APPLICANT NAME
SUSAN MICHAEL
PROJECT APPLICANT EMAIL
[email protected]
PHONE NUMBER
(408) 777-3 328
PROJECT APPIICANT ADDRESS
10300 TORRE AVENUE
CITY STATE
CuPERTINO CA
ZIP CODE
95014
PROJECT APPLICANT (Check appropriate box)
(pLocal Public Agency 0 School District 00ther Specia) District CHECK APPLICABLE FEES:
0 Environmental Impact Report (EIR)
[] Mitigated/Negative Declaration (MND)(ND)
0 Certified Regulatory Program (CRP) document - payment due directly to c[)FW 0 Exempt from fee
0 Notice of Exemption (attach)
[I CDFW No Effed Determination (attach)
[] Fee previously paid (attach previously issued cash receipt copy) [] Water Right Applmtion or Petitim Fee (State Water Resources Contrd Board only) 0 County documentary handling fee
[] Other
PAYMENT ME'n40D:
0State Agency
$4,051.25 $
$2,916.75 $
$1,377 25 $
$850.00 $
[lPrivate Entity
g Cash [] Credit 0 Chedc Q Other TOTAL RECEIVED $ $0.00
S)GNATURE
x 2. 'O
AGENCY OF FILING PRINTED NAME AND T)TLE
Ronald Nguyen, Deputy County Clerk-Recorder
t -kl I