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2013 National Ocean Dumping Site Monitoring Assessment Report

Description: This national report presents EPA's ocean dumping monitoring activities in fiscal year 2013. EPA conducted 13 surveys at 20 ocean disposal sites offshore from Puerto Rico, Virginia, South Carolina, Florida, Texas, Hawaii, and Oregon. This report summarizes each survey's objectives(s), activities, conclusions, and recommended environmental management actions.
Date: May 2016
Creator: United States. Environmental Protection Agency. Office of Water.

Aeroradioactivity Survey and Geology of Puerto Rico (ARMS-I)

Description: Report containing an aeroradioactivity survey of Puerto Rico made on behalf of the Division of Biology and Medicine, United States Atomic Energy Commission. Topics include the types of bedrock noted in the area as well as their levels of radioactivity.
Date: March 1964
Creator: MacKallor, Jules A.

The Arecibo Ionospheric Observatory

Description: This report discusses the issues involved with determining whether the Arecib Ionospheric Observatory is more cost-effective than replacing it with newer, available technology. The Arecibo Ionospheric Observatory is a radio and radar telescope located in Barrio Esperanza, Arecibo, Puerto Rico.
Date: March 5, 2009
Creator: Matthews, Christine M.

The Arecibo Ionospheric Observatory

Description: This report discusses the issues involved with determining whether the Arecib Ionospheric Observatory is more cost-effective than replacing it with newer, available technology. The Arecibo Ionospheric Observatory is a radio and radar telescope located in Barrio Esperanza, Arecibo, Puerto Rico. In 2005-2006, NSF's Division of Astronomical Sciences (AST) conducted a Senior Review of its portfolio of facilities and reported that the scientific value of the Arecibo was modest when compared to other existing and proposed projects and recommended decreasing the telescope's annual $12.0 million budget to $9.0 million in FY2009, and securing partnerships for the remaining necessary funding.
Date: June 16, 2011
Creator: Matthews, Christine M.

Comprehensive Energy Planning for Puerto Rico and U.S. Virgin Islands

Description: This report discusses the electric power grid of Puerto Rico and the U.S. Virgin Islands which were mainly destroyed by Hurricanes Irma and Maria with Puerto Rico being the hardest hit power grid. The report mainly concerns previous and current efforts to create long-term comprehensive energy plans for insular areas such as Puerto Rico and some of the challenges encountered in doing so.
Date: November 6, 2017
Creator: Clark, Corrie E.

Floods in Puerto Rico, Magnitude and Frequency

Description: This report used "annual peak-discharge records at fifty sites with five or more years of record" to determine individual site frequency curves. It includes several maps.
Date: June 1979
Creator: López, M. A.; Colón-Dieppa, E. & Cobb, E. D.

Ground Water in the Lajas Valley, Puerto Rico

Description: Abstract: Lajas Valley is plagued with problems of salinity and waterlogging the soils. Use of brackish (500 milligrams per liter) irrigation compounded ground water for the problem until an irrigation-drainage system was constructed in 1955. Lajas is an alluvium-filled limestone highlands. The alluvium, mostly clay and as much 300 feet (90 meters) thick, contains brackish ground water except in the recharge areas located along the foothills...Results from a digital model show that a network of discharge wells could alleviate waterlogging of the soils in the artesian area.
Date: March 1977
Creator: Anderson, Henry R.

Ground Water in the San Juan Metropolitan Area, Puerto Rico

Description: From introduction: A post-drought analysis of the sources of water supply for the metropolitan area indicated a need for better knowledge of the ground-water resources. A study was implemented through the cooperative water-resources investigation program between Commonwealth agencies of Puerto Rico and the U.S. Geological Survey.
Date: July 1976
Creator: Anderson, Henry R.

History of Dredging and Filling of Lagoons in the San Juan Area, Puerto Rico

Description: Abstract: Laguna La Torrecilla, Laguna de Pinones, Laguna San Jose, and Laguna del Condado, in the San Juan, Puerto Rico area, are located within a metropolitan area of more than 1 million people. Bathymetric maps made during the study, in 1973, showed that Lagunas La Torrecilla, San Jose, and del Condado have been modified by dredging and filling; whereas, Laguna de Pinones has remained in a near natural state. Laguna La Torrecilla has been dredged to a depth, in places, of about 18 metres, and Lagunas San Jose and del Condado, in places to about 11 meters. Dredging in the San Juan lagoons has been harmful, beneficial, and in a few instances has had little or no noticeable effect on the water quality. Usually, dredging in the connecting canals has been beneficial if the water entering the lagoons through the canals was of better quality than the water in the lagoon. Dredging in the mouths of lagoons has been beneficial; whereas, filling or blocking the mouths has been harmful.
Date: September 1976
Creator: Ellis, S. R.

Limnology of Lago Loiza, Puerto Rico

Description: From purpose and study: The principal objectives of this study were as follows: (1) to determine the existing water-quality conditions in Lago Loiza as reflected by the principal chemical, physical, biological and bacteriological characteristics in the lake and its tributaries. (2) To estimate the reservoir's water budget during the study period, including the contributions from the tributaries and other sources. (3) Estimation of the reservoir's overall nitrogen and phosphorus budget, including the principal sources and sinks of these nutrients. (4) Definition of the sedimentation rate in the reservoir.
Date: February 1980
Creator: Quinones-Marquez, Ferdinand

Limnology of Laguna Tortuguero, Puerto Rico

Description: Abstract: The principal chemical, physical and biological characteristics, as well as the hydrology of Laguna Tortuguero, Puerto Rico, were studied from 1974-75. The lagoon, with and area of 2.24 square kilometers and a volume of about 2.68 million cubic meters, contains about 5 percent of seawater. Drainage through a canal on the north side averages 0.64 cubic meters per second per day, flushing the lagoon about 7.5 times per year. Chloride and sodium are the principal ions in the water, ranging from 300 to 700 mg/L and 150 to 400 mg/L, respectively. Among the nutrients, nitrogen averages about 1.7 milligrams per liter, exceeding phosphorus in a weight ratio of 170:1. About 10 percent of the nitrogen and 40 percent of the phosphorus entering the lagoon is retained. The bottom sediments, with a volume of about 4.5 million cubic meters, average 0.8 and 0.014 percent nitrogen and phosphorus, respectively.
Date: March 1978
Creator: Quinones-Marquez, Ferdinand & Fuste, Luis A.

National Coastal Condition Report IV

Description: This report assesses the condition of the nation's estuaries and costal embayments, including the coastal waters of the conterminous United States, Southeastern Alaska, Hawaii, American Samoa, Guam, Puerto Rico, and the U.S. Virgin Islands.
Date: September 2012
Creator: United States. Environmental Protection Agency. Office of Research and Development.

Political Status of Puerto Rico: Brief Background and Recent Developments for Congress

Description: This report provides policy and historical background about Puerto Rico's political status--a term of art referring to the relationship between the federal government and a territorial one. The report emphasizes recent developments that are likely to be most relevant for Congress. Congress has not altered the island's status since 1952, when it approved a territorial constitution.
Date: December 28, 2016
Creator: Garrett, R. Sam

Political Status of Puerto Rico: Brief Background and Recent Developments for Congress

Description: This report provides policy and historical background about Puerto Rico's political status--a term of art referring to the relationship between the federal government and a territorial one. It emphasizes recent developments that are likely to be most relevant for Congress. Congress has not altered the island's status since 1952, when it approved a territorial constitution.
Date: June 12, 2017
Creator: Garrett, R. S.

Political Status of Puerto Rico: Options for Congress

Description: This report discusses the current U.S.-Puerto Rico relationship, the history of said relationship, and the current political state of Puerto Rico, as well as relevant pieces of U.S. Congressional legislation concerning Puerto Rico.
Date: June 19, 2009
Creator: Bea, Keith & Garrett, R. Sam

Political Status of Puerto Rico: Options for Congress

Description: This report discusses the current U.S.-Puerto Rico relationship, the history of said relationship, and the current political state of Puerto Rico, as well as relevant pieces of U.S. Congressional legislation concerning Puerto Rico.
Date: August 4, 2009
Creator: Bea, Keith & Garrett, R. Sam

Political Status of Puerto Rico: Options for Congress

Description: This report discusses the current U.S.-Puerto Rico relationship, the history of said relationship, and the current political state of Puerto Rico, as well as relevant pieces of U.S. Congressional legislation concerning Puerto Rico.
Date: May 19, 2010
Creator: Bea, Keith & Garrett, R. Sam

Political Status of Puerto Rico: Options for Congress

Description: This report discusses the current U.S.-Puerto Rico relationship, the history of said relationship, and the current political state of Puerto Rico, as well as relevant pieces of U.S. Congressional legislation concerning Puerto Rico.
Date: April 23, 2010
Creator: Bea, Keith & Garrett, R. Sam

Political Status of Puerto Rico: Options for Congress

Description: This report discusses the current U.S.-Puerto Rico relationship, the history of said relationship, and the current political state of Puerto Rico, as well as relevant pieces of U.S. Congressional legislation concerning Puerto Rico.
Date: March 16, 2010
Creator: Bea, Keith & Garrett, R. Sam