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725-6MW-0319- Install Sentinel Wells

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State & Local

Contract Overview

Solicitation details, issuing organization, response deadlines, documents, and interested companies for this government contract opportunity.

AI Contract Overview

Marathon Petroleum Company plans to install two sentinel wells, CW-14-B3 and CW-14-B4, at the southwest corner of the cloverleaf area along Interstate 710 at Post Mile 18.36 within Caltrans right-of-way in South Gate, California. These wells will be positioned as a two-well cluster with 20-foot screens deployed at distinct depths within the Gage Aquifer, with CW-14-B3 accessing the upper portion and CW-14-B4 the lower portion to monitor groundwater conditions. The project requires a temporary encroachment permit to facilitate construction and associated traffic control measures within the highway right-of-way, with no relocation of public utilities or acquisition of additional right-of-way. Excavation for the wells will be limited to a maximum depth of 3360 inches, a width of 12 inches, and a length of one linear foot. Following installation, the wells will be sampled twice annually for five years to ensure ongoing environmental monitoring, and all work will be conducted under the oversight of Caltrans District 7.

General Info

Marathon Petroleum installs two sentinel wells in Caltrans right-of-way for groundwater monitoring, with biannual sampling for five years.

Agency

California → Caltrans, District 7 - Los Angeles

NAICS

237990 - Other Heavy and Civil Engineering Construction

Place of Performance

South Gate, CA

Set-Aside

NONE

Documents

No documents available

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Timeline

PostedJun 30

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Organization & Contact Information

AgencyCalifornia → Caltrans, District 7 - Los Angeles

Contacts3 people available

OfficeN/A

Organization / Agency

California → Caltrans, District 7 - Los Angeles

Office AddressN/A

Contacts

Susan KooSenior Environmental Scientist

contact@example.gov

+1 (555) 000-0000

Susan KooSenior Environmental Scientist

contact@example.gov

+1 (555) 000-0000

Chad RoperProject Manager

contact@example.gov

+1 (555) 000-0000

Full Description

Marathon Petroleum Company proposes the installation of two (2) sentinel wells CW-14- B3 and CW-14-B4 at the southwest corner of the clover leaf area located within Caltrans right-of-way along Interstate (I-)710 at Post Mile (PM) 18.36, as well as to perform traffic control activities in the City of South Gate, Los Angeles County. The proposed work will entail the installation of the proposed wells as a two-well cluster with 20-foot screens installed at separate depths within the gage Aquifer. Well CW-14-B3 will be installed at the upper portion of the Gage Aquifer and CW-14-B4 will be installed at the lower portion of the Gage Aquifer system. Marathon Petroleum Company is requesting a temporary encroachment permit to access Caltrans right-of-way along I- 710 at PM 18.36 to complete the above-mentioned work and to perform associated temporary traffic control activities. In addition, the wells will need to be accessed for sampling twice a year for a period of five (5) years following well construction. Excavation will have a maximum depth of 3360-inches, a maximum width of 12-inches and a maximum length of one (1) linear foot. No public utilities will be relocated, and no new right-of-way will be acquired for the project.