Effluent limits, ambient quality, and monitoring

Effluent limits are frequently based on a uniform emission standard, which applies to all polluting facilities within in a single industry. However, the implementation of many environmental protection laws does not lead to uniform effluent limits due to considerations of local environmental conditions. In this paper, we theoretically examine the relationships among the stringency of effluent limits imposed on individual polluting facilities, environmental protection agencies’ monitoring decisions, and the ambient quality of the local environment. We then extend the theoretical analysis by exploring the establishment of effluent limits when (1) the national emission standard represents only an upper bound on the local issuance of limits and (2) negotiation efforts expended by both regulated polluting facilities and environmentally concerned citizens play a role. We find that the negotiated discharge limit depends on the political weight enjoyed and the negotiation effort costs faced by both citizens and the regulated facility, along with the stringency of the national standard and local ambient quality condition

Acceptable Reforms of Agri-Environmental Policies

We consider a model of regulation for nonpoint source water pollution through non linear taxation/subsidization of agricultural production. Farmers are heterogenous along two dimensions, their ability to transform inputs into final production and the available area they possess. Asymmetric information and participation of farmers to the regulation scheme put constraints on the optimal policy that we characterize. We show that a positive relationship between size of land and ability may exacerbate adverse selection effects. We then introduce acceptability constraints and show that the intervention under acceptability amounts to reallocate production towards inefficient farmers who benefit from the reform at the expense of efficient producers. Last, we calibrate the model using datas on a french watershed (Don watershed). Simulations indicate that satisfying a high degree of acceptability does not entail high welfare losses compared to low degree of acceptability.Environmental Economics and Policy,

THE USE OF ESTIMATED POLLUTION FLOWS IN AGRICULTURAL POLLUTION CONTROL POLICY: IMPLICATIONS FOR ABATEMENT AND POLICY INSTRUMENTS

Flows of water pollutants from agricultural sources are, for all practical purposes, unobservable by direct monitoring. These flows can, however, be estimated using hydrological models. The analysis presented in this paper demonstrates that uncertainty on estimated flows is not neutral with respect to the optimal level and allocation of estimated abatement or with respect to the expected net benefits of alternative pollution control policy instruments. Policy implications are noted.Resource /Energy Economics and Policy,

Market Power in Pollution Permit Markets

As with other commodity markets, markets for trading pollution permits have not been immune to market power concerns. In this paper, I survey the existing literature on market power in permit trading but also contribute with some new results and ideas. I start the survey with Hahn’s (1984) dominant-firm (static) model that I then extend to the case in which there are two or more strategic firms that may also strategically interact in the output market, to the case in which current permits can be stored for future use (as in most existing and proposed market designs), to the possibility of collusive behavior, and to the case in which permits are auctioned off instead of allocated for free to firms. I finish the paper with a review of empirical evidence on market power, if any, with particular attention to the U.S. sulfur market and the Southern California NOx market.Market power, emissions trading, pollution permits, storable permits

To Comply or Not To Comply? Pollution Standard Setting Under Costly Monitoring and Sanctioning

In this paper, we characterize optimal regulatory policies composed of pollution standards, probabilities of inspection and fines for non-compliance, in a context where both monitoring and sanctioning are socially costly, and penalties may include gravity and non-gravity components at the regulator's discretion. The optimal policy entails compliance with the standards as long as a quite intuitive condition is met. Non-compliant policies may include standards even below the pollution levels that minimize the sum of abatement costs and external damages. Interestingly, the appropriate structure of penalties under non-compliance is highly progressive, while the best possible shape of the fines under compliance is linear only if non-gravity sanctions are not allowed.standards; monitoring; convex fines; non-compliance; non-gravity sanctions

MULTIPLE AGENTS, AND AGRICULTURAL NONPOINT-SOURCE WATER POLLUTION CONTROL POLICIES

Assuming asymmetric information over farmer profits and zero transaction costs, prior literature has suggested that when regulating nonpoint source water pollution, a tax on management practices (inputs) can implement full-information allocations and is superior to a tax on estimated runoff. Using mechanism design theory under asymmetric information, this paper show that under the same assumptions, management practice taxes and taxes on estimated runoff are equally efficient.Environmental Economics and Policy,

TRANSACTION COSTS, ECONOMIC INSTRUMENTS AND ENVIRONMENTAL POLICIES

This study has attempted to distinguish the alternative forms of transaction costs referred to the environmental policy literature and to bring these transaction costs into a unified theory. The optimal choice of economic instrument between Pigouvian taxes and tradable permits is shown to depend on the level of transaction costs as opposed to the standard model where both emission taxes and permits are first best policies to achieve a level of emissions. It is demonstrated that inclusion of transaction costs decreases the socially optimal emission level as compared to the standard model. Instrument selection is affected by the functional specification for instrument costs for both firm and regulator level. Depending on the nature of these costs optimal economic instruments will be different.Transaction Costs, Economic Instrument Selection, Environmental Economics and Policy, Industrial Organization,

TRANSACTION CHAIN APPROACH TO THE REGULATION OF THE NONPOINT WATER POLLUTION FROM FARMS-RUNOFF

We offer a decentralized solution to the asymmetric information and hidden action problems in the nonpoint source (NPS) pollution case. Farmers in the same watershed generate homogeneous NPS pollution. The regulator, R, pays for (or represents a group of point-source, PS, polluters who pay for) pollution reduction credits earned by the group of the farmers. To resolve the asymmetric information problem, R is concerned with only the total level of the abatement achieved, while the group of farmers (called the Association, A), undertakes responsibility to distribute the payment so as to induce farmers to deliver abatement. We show that A can devise an optimal contract to deal with the farmers' hidden action problem. We identify the restrictions under which such a policy can be implemented, evaluate its effects on the product market, and show that in the NPS case information rents are higher than in the PS case.Environmental Economics and Policy,

On the regulation of unobserved emissions

Regulation of nonpoint source pollution often relies in one way or another on policy instruments based on ambient indicators. For well-known reasons, enforcement of ambient-based policies is, at best, limited. If no individual choices or actions are observed, than ambient-based regulation might be the only feasible approach. Often, some relevant individual indicators, such as output or certain inputs, are observable. For such cases, we offer a regulation mechanism that does away with ambient indicators. The mechanism implements the optimal output-abatement-emission allocation and gives rise to the full information outcome when the social cost of transfers is nil. Special attention is given to the regulation of (unobserved) abatement.Nonpoint source pollution, abatement, asymmetric information, regulation mechanism, implementation., Environmental Economics and Policy,

Efficiency of Nonpoint Source Pollution Instruments with Externality Among Polluters:An Experimental Study.

In nonpoint source pollution problems, the regulator does not observe each polluter’s individual emission, which prevents him from using the conventional policy instruments. Therefore new instruments have been designed to regulate this type of pollution. In an experiment, we compare the efficiency of some of these instruments: an input based tax, an ambient tax, and a group fine. We assume that the polluters themselves are affected by environmental damages. A control session without any regulation is also carried out in order to study the “status quo” situation. Our experimental data show that the input tax is almost perfectly efficient and very reliable, and the group fine is fairly efficient and reliable. Both instruments improve welfare with respect to the status quo. On the contrary, the ambient tax decreases social welfare with respect to the status quo, and its effect is very unreliable.Environmental Economics, Experimental Economics, Nonpoint source pollution, Regulation, Input Tax, Ambient Tax.